[v4,03/16] drm: bridge: analogix/dp: split exynos dp driver to bridge dir

Commit Message

Yakir Yang Sept. 1, 2015, 5:49 a.m. UTC

Split the dp core driver from exynos directory to bridge
directory, and rename the core driver to analogix_dp_*,
leave the platform code to analogix_dp-exynos.

Signed-off-by: Yakir Yang <[e-mail]>
---
Changes in v4:
- Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT propery.
- Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to "exynos_dp.c"
- Take Archit suggest, create a separate folder for analogix code in bridge/

Changes in v3:
- Take Thierry Reding suggest, move exynos's video_timing code
  to analogix_dp-exynos platform driver, add get_modes method
  to struct analogix_dp_plat_data.
- Take Heiko suggest, rename some "samsung*" dts propery to "analogix*".

Changes in v2:
- Take Jingoo Han suggest, remove new copyright
- Fix compiled failed dut to analogix_dp_device misspell

 drivers/gpu/drm/bridge/Kconfig                     |    2 +
 drivers/gpu/drm/bridge/Makefile                    |    1 +
 drivers/gpu/drm/bridge/analogix/Kconfig            |    4 +
 drivers/gpu/drm/bridge/analogix/Makefile           |    1 +
 .../analogix/analogix_dp_core.c}                   |  817 ++++++-------
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h |  283 +++++
 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c  | 1265 ++++++++++++++++++++
 .../analogix/analogix_dp_reg.h}                    |  258 ++--
 drivers/gpu/drm/exynos/Kconfig                     |    3 +-
 drivers/gpu/drm/exynos/Makefile                    |    2 +-
 drivers/gpu/drm/exynos/exynos_dp.c                 |  306 +++++
 drivers/gpu/drm/exynos/exynos_dp_core.h            |  282 -----
 drivers/gpu/drm/exynos/exynos_dp_reg.c             | 1259 -------------------
 include/drm/bridge/analogix_dp.h                   |   24 +
 14 files changed, 2357 insertions(+), 2150 deletions(-)
 create mode 100644 drivers/gpu/drm/bridge/analogix/Kconfig
 create mode 100644 drivers/gpu/drm/bridge/analogix/Makefile
 rename drivers/gpu/drm/{exynos/exynos_dp_core.c => bridge/analogix/analogix_dp_core.c} (50%)
 create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
 create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
 rename drivers/gpu/drm/{exynos/exynos_dp_reg.h => bridge/analogix/analogix_dp_reg.h} (64%)
 create mode 100644 drivers/gpu/drm/exynos/exynos_dp.c
 delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_core.h
 delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_reg.c
 create mode 100644 include/drm/bridge/analogix_dp.h

Comments

Heiko Stuebner Sept. 1, 2015, 8:46 p.m. UTC | #1

Am Dienstag, 1. September 2015, 13:49:58 schrieb Yakir Yang:
> Split the dp core driver from exynos directory to bridge
> directory, and rename the core driver to analogix_dp_*,
> leave the platform code to analogix_dp-exynos.
> 
> Signed-off-by: Yakir Yang <[e-mail]>

[...]

> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c similarity index 50%
> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> index bed0252..7d62f22 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c

[...]

>  	connector->polled = DRM_CONNECTOR_POLL_HPD;
> 
>  	ret = drm_connector_init(dp->drm_dev, connector,
> -				 &exynos_dp_connector_funcs,
> +				 &analogix_dp_connector_funcs,
>  				 DRM_MODE_CONNECTOR_eDP);
>  	if (ret) {
>  		DRM_ERROR("Failed to initialize connector with drm\n");
>  		return ret;
>  	}
> 
> -	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
> +	drm_connector_helper_add(connector,
> +				 &analogix_dp_connector_helper_funcs);
>  	drm_connector_register(connector);

this should only run on exynos, as we're doing all our connector registration 
in the core driver after all components are bound, so I guess something like 
the following is needed:

       if (dp->plat_data && dp->plat_data->dev_type == EXYNOS_DP)
               drm_connector_register(connector);



>  	drm_mode_connector_attach_encoder(connector, encoder);
> 

[...]

> @@ -1301,7 +1239,10 @@ static int exynos_dp_bind(struct device *dev, struct
> device *master, void *data) if (IS_ERR(dp->reg_base))
>  		return PTR_ERR(dp->reg_base);
> 
> -	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "samsung,hpd-gpio", 0);
> +	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
> +	if (gpio_is_valid(dp->hpd_gpio))

this should be !gpio_is_valid ... i.e. only check the old property if the new 
one is _not_ valid


> +		dp->hpd_gpio = of_get_named_gpio(dev->of_node,
> +						 "samsung,hpd-gpio", 0);
> 
>  	if (gpio_is_valid(dp->hpd_gpio)) {
>  		/*

Yakir Yang Sept. 2, 2015, 1:45 a.m. UTC | #2

Heiko,

? 09/02/2015 04:46 AM, Heiko Stuebner ??:
> Am Dienstag, 1. September 2015, 13:49:58 schrieb Yakir Yang:
>> Split the dp core driver from exynos directory to bridge
>> directory, and rename the core driver to analogix_dp_*,
>> leave the platform code to analogix_dp-exynos.
>>
>> Signed-off-by: Yakir Yang <[e-mail]>
> [...]
>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c similarity index 50%
>> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
>> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> index bed0252..7d62f22 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> [...]
>
>>   	connector->polled = DRM_CONNECTOR_POLL_HPD;
>>
>>   	ret = drm_connector_init(dp->drm_dev, connector,
>> -				 &exynos_dp_connector_funcs,
>> +				 &analogix_dp_connector_funcs,
>>   				 DRM_MODE_CONNECTOR_eDP);
>>   	if (ret) {
>>   		DRM_ERROR("Failed to initialize connector with drm\n");
>>   		return ret;
>>   	}
>>
>> -	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
>> +	drm_connector_helper_add(connector,
>> +				 &analogix_dp_connector_helper_funcs);
>>   	drm_connector_register(connector);
> this should only run on exynos, as we're doing all our connector registration
> in the core driver after all components are bound, so I guess something like
> the following is needed:
>
>         if (dp->plat_data && dp->plat_data->dev_type == EXYNOS_DP)
>                 drm_connector_register(connector);
>

Oh, good catch, thanks

>
>>   	drm_mode_connector_attach_encoder(connector, encoder);
>>
> [...]
>
>> @@ -1301,7 +1239,10 @@ static int exynos_dp_bind(struct device *dev, struct
>> device *master, void *data) if (IS_ERR(dp->reg_base))
>>   		return PTR_ERR(dp->reg_base);
>>
>> -	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "samsung,hpd-gpio", 0);
>> +	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
>> +	if (gpio_is_valid(dp->hpd_gpio))
> this should be !gpio_is_valid ... i.e. only check the old property if the new
> one is _not_ valid

Oh, much appreciate  ;)

- Yakir

>
>> +		dp->hpd_gpio = of_get_named_gpio(dev->of_node,
>> +						 "samsung,hpd-gpio", 0);
>>
>>   	if (gpio_is_valid(dp->hpd_gpio)) {
>>   		/*
>
>
>

Emil Velikov Sept. 2, 2015, 2:50 p.m. UTC | #3

[Dropping the CC list]

Hi Yakir Yang,

On 1 September 2015 at 06:49, Yakir Yang <[e-mail]> wrote:
> Split the dp core driver from exynos directory to bridge
> directory, and rename the core driver to analogix_dp_*,
> leave the platform code to analogix_dp-exynos.
>
> Signed-off-by: Yakir Yang <[e-mail]>
> ---
> Changes in v4:
> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT propery.
> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to "exynos_dp.c"
> - Take Archit suggest, create a separate folder for analogix code in bridge/
>
"Take X suggest", is grammatically incorrect. You should use
"suggestion(s)" or alternatively use the following approach.

- Create a separate folder for analogix code in bridge/ (Archit)

Cheers,
Emil

P.S. Why do you resend the whole series (some 10+ patches) when only a
few patches have been changed ? Are all the patches changed whist
missing that information (vX: rebase on top of A)

Krzysztof Kozlowski Sept. 3, 2015, 12:58 a.m. UTC | #4

On 01.09.2015 14:49, Yakir Yang wrote:
> Split the dp core driver from exynos directory to bridge
> directory, and rename the core driver to analogix_dp_*,
> leave the platform code to analogix_dp-exynos.
> 
> Signed-off-by: Yakir Yang <[e-mail]>
> ---
> Changes in v4:
> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT propery.
> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to "exynos_dp.c"
> - Take Archit suggest, create a separate folder for analogix code in bridge/
> 
> Changes in v3:
> - Take Thierry Reding suggest, move exynos's video_timing code
>   to analogix_dp-exynos platform driver, add get_modes method
>   to struct analogix_dp_plat_data.
> - Take Heiko suggest, rename some "samsung*" dts propery to "analogix*".
> 
> Changes in v2:
> - Take Jingoo Han suggest, remove new copyright
> - Fix compiled failed dut to analogix_dp_device misspell
> 
>  drivers/gpu/drm/bridge/Kconfig                     |    2 +
>  drivers/gpu/drm/bridge/Makefile                    |    1 +
>  drivers/gpu/drm/bridge/analogix/Kconfig            |    4 +
>  drivers/gpu/drm/bridge/analogix/Makefile           |    1 +
>  .../analogix/analogix_dp_core.c}                   |  817 ++++++-------
>  drivers/gpu/drm/bridge/analogix/analogix_dp_core.h |  283 +++++
>  drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c  | 1265 ++++++++++++++++++++
>  .../analogix/analogix_dp_reg.h}                    |  258 ++--
>  drivers/gpu/drm/exynos/Kconfig                     |    3 +-
>  drivers/gpu/drm/exynos/Makefile                    |    2 +-
>  drivers/gpu/drm/exynos/exynos_dp.c                 |  306 +++++
>  drivers/gpu/drm/exynos/exynos_dp_core.h            |  282 -----
>  drivers/gpu/drm/exynos/exynos_dp_reg.c             | 1259 -------------------
>  include/drm/bridge/analogix_dp.h                   |   24 +
>  14 files changed, 2357 insertions(+), 2150 deletions(-)
>  create mode 100644 drivers/gpu/drm/bridge/analogix/Kconfig
>  create mode 100644 drivers/gpu/drm/bridge/analogix/Makefile
>  rename drivers/gpu/drm/{exynos/exynos_dp_core.c => bridge/analogix/analogix_dp_core.c} (50%)
>  create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
>  create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
>  rename drivers/gpu/drm/{exynos/exynos_dp_reg.h => bridge/analogix/analogix_dp_reg.h} (64%)
>  create mode 100644 drivers/gpu/drm/exynos/exynos_dp.c
>  delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_core.h
>  delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_reg.c
>  create mode 100644 include/drm/bridge/analogix_dp.h
> 
> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> index 2de52a5..7b5b77a 100644
> --- a/drivers/gpu/drm/bridge/Kconfig
> +++ b/drivers/gpu/drm/bridge/Kconfig
> @@ -29,4 +29,6 @@ config DRM_PARADE_PS8622
>  	---help---
>  	  Parade eDP-LVDS bridge chip driver.
>  
> +source "drivers/gpu/drm/bridge/analogix/Kconfig"
> +
>  endmenu
> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> index e2eef1c..5366c6b 100644
> --- a/drivers/gpu/drm/bridge/Makefile
> +++ b/drivers/gpu/drm/bridge/Makefile
> @@ -3,3 +3,4 @@ ccflags-y := -Iinclude/drm
>  obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
>  obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
>  obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
> +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
> diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig
> new file mode 100644
> index 0000000..5ff6551
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/analogix/Kconfig
> @@ -0,0 +1,4 @@
> +config DRM_ANALOGIX_DP
> +	tristate
> +	depends on DRM
> +	select DRM_KMS_HELPER
> diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile
> new file mode 100644
> index 0000000..9107b86
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/analogix/Makefile
> @@ -0,0 +1 @@
> +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp_core.o analogix_dp_reg.o
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> similarity index 50%
> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> index bed0252..7d62f22 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> @@ -1,14 +1,14 @@
>  /*
> - * Samsung SoC DP (Display Port) interface driver.
> - *
> - * Copyright (C) 2012 Samsung Electronics Co., Ltd.
> - * Author: Jingoo Han <[e-mail]>
> - *
> - * This program is free software; you can redistribute it and/or modify it
> - * under the terms of the GNU General Public License as published by the
> - * Free Software Foundation; either version 2 of the License, or (at your
> - * option) any later version.
> - */
> +* Analogix DP (Display Port) core interface driver.
> +*
> +* Copyright (C) 2012 Samsung Electronics Co., Ltd.
> +* Author: Jingoo Han <[e-mail]>
> +*
> +* This program is free software; you can redistribute it and/or modify it
> +* under the terms of the GNU General Public License as published by the
> +* Free Software Foundation; either version 2 of the License, or (at your
> +* option) any later version.
> +*/
>  
>  #include <linux/module.h>
>  #include <linux/platform_device.h>
> @@ -18,12 +18,9 @@
>  #include <linux/interrupt.h>
>  #include <linux/of.h>
>  #include <linux/of_gpio.h>
> -#include <linux/of_graph.h>
>  #include <linux/gpio.h>
>  #include <linux/component.h>
>  #include <linux/phy/phy.h>
> -#include <video/of_display_timing.h>
> -#include <video/of_videomode.h>
>  
>  #include <drm/drmP.h>
>  #include <drm/drm_crtc.h>
> @@ -31,52 +28,42 @@
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_panel.h>
>  
> -#include "exynos_dp_core.h"
> -#include "exynos_drm_crtc.h"
> +#include <drm/bridge/analogix_dp.h>
>  
> -#define ctx_from_connector(c)	container_of(c, struct exynos_dp_device, \
> -					connector)
> +#include "analogix_dp_core.h"
>  
> -static inline struct exynos_drm_crtc *dp_to_crtc(struct exynos_dp_device *dp)
> -{
> -	return to_exynos_crtc(dp->encoder.crtc);
> -}
> -
> -static inline struct exynos_dp_device *encoder_to_dp(
> -						struct drm_encoder *e)
> -{
> -	return container_of(e, struct exynos_dp_device, encoder);
> -}
> +#define connector_to_dp(c) \
> +	container_of(c, struct analogix_dp_device, connector)
>  
>  struct bridge_init {
>  	struct i2c_client *client;
>  	struct device_node *node;
>  };
>  
> -static void exynos_dp_init_dp(struct exynos_dp_device *dp)
> +static void analogix_dp_init_dp(struct analogix_dp_device *dp)
>  {
> -	exynos_dp_reset(dp);
> +	analogix_dp_reset(dp);
>  
> -	exynos_dp_swreset(dp);
> +	analogix_dp_swreset(dp);
>  
> -	exynos_dp_init_analog_param(dp);
> -	exynos_dp_init_interrupt(dp);
> +	analogix_dp_init_analog_param(dp);
> +	analogix_dp_init_interrupt(dp);
>  
>  	/* SW defined function Normal operation */
> -	exynos_dp_enable_sw_function(dp);
> +	analogix_dp_enable_sw_function(dp);
>  
> -	exynos_dp_config_interrupt(dp);
> -	exynos_dp_init_analog_func(dp);
> +	analogix_dp_config_interrupt(dp);
> +	analogix_dp_init_analog_func(dp);
>  
> -	exynos_dp_init_hpd(dp);
> -	exynos_dp_init_aux(dp);
> +	analogix_dp_init_hpd(dp);
> +	analogix_dp_init_aux(dp);
>  }
>  
> -static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
> +static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
>  {
>  	int timeout_loop = 0;
>  
> -	while (exynos_dp_get_plug_in_status(dp) != 0) {
> +	while (analogix_dp_get_plug_in_status(dp) != 0) {
>  		timeout_loop++;
>  		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
>  			dev_err(dp->dev, "failed to get hpd plug status\n");
> @@ -88,7 +75,7 @@ static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
>  	return 0;
>  }
>  
> -static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
> +static unsigned char analogix_dp_calc_edid_check_sum(unsigned char *edid_data)
>  {
>  	int i;
>  	unsigned char sum = 0;
> @@ -99,7 +86,7 @@ static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
>  	return sum;
>  }
>  
> -static int exynos_dp_read_edid(struct exynos_dp_device *dp)
> +static int analogix_dp_read_edid(struct analogix_dp_device *dp)
>  {
>  	unsigned char edid[EDID_BLOCK_LENGTH * 2];
>  	unsigned int extend_block = 0;
> @@ -114,9 +101,9 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  	 */
>  
>  	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
> -	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
> -					      EDID_EXTENSION_FLAG,
> -					      &extend_block);
> +	retval = analogix_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
> +						EDID_EXTENSION_FLAG,
> +						&extend_block);

Hi,

What was the point of patch 1 (checkpatch -f --subjective) if you
have to re-align the parameters again? It's meaningless.

I could understand that idea if this patch touched only first
line - name of the function. This would result in small
and effective diff, like:

-	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
+	retval = SAME_LEGNTH____byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
 					      EDID_EXTENSION_FLAG,

But this is not the case. The reviewer have to look at 6 lines
of changes instead of two. You fixed the alignment just for two
patches and then you re-written it. It's meaningless.

Nope. Please drop all changes from patch 1 which:  
(all conditions apply):
1. change alignment,
2. are immediately changed in next patches (e.g. like here),

and fix the alignment while renaming the function.

This is actually another point for not accepting commits where
the reason is "checkpatch told me".



>  	if (retval)
>  		return retval;
>  
> @@ -124,7 +111,7 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>  		dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>  
>  		/* Read EDID data */
> -		retval = exynos_dp_read_bytes_from_i2c(
> +		retval = analogix_dp_read_bytes_from_i2c(
>  					dp, I2C_EDID_DEVICE_ADDR,
>  					EDID_HEADER_PATTERN,
>  					EDID_BLOCK_LENGTH,
> @@ -133,14 +120,14 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)

(...)

> @@ -871,218 +862,204 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
>  	return IRQ_HANDLED;
>  }
>  
> -static void exynos_dp_hotplug(struct work_struct *work)
> +static void analogix_dp_hotplug(struct work_struct *work)
>  {
> -	struct exynos_dp_device *dp;
> +	struct analogix_dp_device *dp;
>  
> -	dp = container_of(work, struct exynos_dp_device, hotplug_work);
> +	dp = container_of(work, struct analogix_dp_device, hotplug_work);
>  
>  	if (dp->drm_dev)
>  		drm_helper_hpd_irq_event(dp->drm_dev);
>  }
>  
> -static void exynos_dp_commit(struct drm_encoder *encoder)
> +static void analogix_dp_commit(struct analogix_dp_device *dp)
>  {
> -	struct exynos_dp_device *dp = encoder_to_dp(encoder);
>  	int ret;
>  
>  	/* Keep the panel disabled while we configure video */
> -	if (dp->panel) {
> -		if (drm_panel_disable(dp->panel))
> +	if (dp->plat_data && dp->plat_data->panel) {
> +		if (drm_panel_disable(dp->plat_data->panel))
>  			DRM_ERROR("failed to disable the panel\n");
>  	}
>  
> -	ret = exynos_dp_detect_hpd(dp);
> +	ret = analogix_dp_detect_hpd(dp);
>  	if (ret) {
>  		/* Cable has been disconnected, we're done */
>  		return;
>  	}
>  
> -	ret = exynos_dp_handle_edid(dp);
> +	ret = analogix_dp_handle_edid(dp);
>  	if (ret) {
>  		dev_err(dp->dev, "unable to handle edid\n");
>  		return;
>  	}
>  
> -	ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
> -				       dp->video_info->link_rate);
> +	ret = analogix_dp_set_link_train(dp, dp->video_info->lane_count,
> +					 dp->video_info->link_rate);
>  	if (ret) {
>  		dev_err(dp->dev, "unable to do link train\n");
>  		return;
>  	}
>  
> -	exynos_dp_enable_scramble(dp, 1);
> -	exynos_dp_enable_rx_to_enhanced_mode(dp, 1);
> -	exynos_dp_enable_enhanced_mode(dp, 1);
> +	analogix_dp_enable_scramble(dp, 1);
> +	analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
> +	analogix_dp_enable_enhanced_mode(dp, 1);
>  
> -	exynos_dp_set_lane_count(dp, dp->video_info->lane_count);
> -	exynos_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
> +	analogix_dp_set_lane_count(dp, dp->video_info->lane_count);
> +	analogix_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
>  
> -	exynos_dp_init_video(dp);
> -	ret = exynos_dp_config_video(dp);
> +	analogix_dp_init_video(dp);
> +	ret = analogix_dp_config_video(dp);
>  	if (ret)
>  		dev_err(dp->dev, "unable to config video\n");
>  
>  	/* Safe to enable the panel now */
> -	if (dp->panel) {
> -		if (drm_panel_enable(dp->panel))
> +	if (dp->plat_data && dp->plat_data->panel) {
> +		if (drm_panel_enable(dp->plat_data->panel))
>  			DRM_ERROR("failed to enable the panel\n");
>  	}
>  
>  	/* Enable video */
> -	exynos_dp_start_video(dp);
> +	analogix_dp_start_video(dp);
>  }
>  
>  static enum drm_connector_status
> -exynos_dp_detect(struct drm_connector *connector, bool force)
> +analogix_dp_detect(struct drm_connector *connector, bool force)
>  {
>  	return connector_status_connected;
>  }
>  
> -static void exynos_dp_connector_destroy(struct drm_connector *connector)
> +static void analogix_dp_connector_destroy(struct drm_connector *connector)
>  {
>  	drm_connector_unregister(connector);
>  	drm_connector_cleanup(connector);
>  }
>  
> -static struct drm_connector_funcs exynos_dp_connector_funcs = {
> +static struct drm_connector_funcs analogix_dp_connector_funcs = {
>  	.dpms = drm_atomic_helper_connector_dpms,
>  	.fill_modes = drm_helper_probe_single_connector_modes,
> -	.detect = exynos_dp_detect,
> -	.destroy = exynos_dp_connector_destroy,
> +	.detect = analogix_dp_detect,
> +	.destroy = analogix_dp_connector_destroy,
>  	.reset = drm_atomic_helper_connector_reset,
>  	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>  	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>  };
>  
> -static int exynos_dp_get_modes(struct drm_connector *connector)
> +static int analogix_dp_get_modes(struct drm_connector *connector)
>  {
> -	struct exynos_dp_device *dp = ctx_from_connector(connector);
> -	struct drm_display_mode *mode;
> -
> -	if (dp->panel)
> -		return drm_panel_get_modes(dp->panel);
> +	struct analogix_dp_device *dp = connector_to_dp(connector);
> +	struct analogix_dp_plat_data *plat_data = dp->plat_data;
> +	int num_modes = 0;
>  
> -	mode = drm_mode_create(connector->dev);
> -	if (!mode) {
> -		DRM_ERROR("failed to create a new display mode.\n");
> -		return 0;
> -	}
> -
> -	drm_display_mode_from_videomode(&dp->priv.vm, mode);
> -	mode->width_mm = dp->priv.width_mm;
> -	mode->height_mm = dp->priv.height_mm;
> -	connector->display_info.width_mm = mode->width_mm;
> -	connector->display_info.height_mm = mode->height_mm;
> +	if (plat_data && plat_data->panel)
> +		num_modes += drm_panel_get_modes(plat_data->panel);
>  
> -	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> -	drm_mode_set_name(mode);
> -	drm_mode_probed_add(connector, mode);
> +	if (plat_data && plat_data->get_modes)
> +		 num_modes += plat_data->get_modes(plat_data, connector);
>  
> -	return 1;
> +	return num_modes;
>  }
>  
>  static struct drm_encoder *
> -exynos_dp_best_encoder(struct drm_connector *connector)
> +analogix_dp_best_encoder(struct drm_connector *connector)
>  {
> -	struct exynos_dp_device *dp = ctx_from_connector(connector);
> +	struct analogix_dp_device *dp = connector_to_dp(connector);
>  
> -	return &dp->encoder;
> +	return dp->encoder;
>  }
>  
> -static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
> -	.get_modes = exynos_dp_get_modes,
> -	.best_encoder = exynos_dp_best_encoder,
> +static struct drm_connector_helper_funcs analogix_dp_connector_helper_funcs = {
> +	.get_modes = analogix_dp_get_modes,
> +	.best_encoder = analogix_dp_best_encoder,
>  };
>  
> -/* returns the number of bridges attached */
> -static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
> -					struct drm_encoder *encoder)
> -{
> -	int ret;
> -
> -	encoder->bridge->next = dp->ptn_bridge;
> -	dp->ptn_bridge->encoder = encoder;
> -	ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
> -	if (ret) {
> -		DRM_ERROR("Failed to attach bridge to drm\n");
> -		return ret;
> -	}
> -
> -	return 0;
> -}
> -
> -static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
> +static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
>  {
> -	struct exynos_dp_device *dp = bridge->driver_private;
> -	struct drm_encoder *encoder = &dp->encoder;
> +	struct analogix_dp_device *dp = bridge->driver_private;
> +	struct drm_encoder *encoder = dp->encoder;
>  	struct drm_connector *connector = &dp->connector;
>  	int ret;
>  
> -	/* Pre-empt DP connector creation if there's a bridge */
> -	if (dp->ptn_bridge) {
> -		ret = exynos_drm_attach_lcd_bridge(dp, encoder);
> -		if (!ret)
> -			return 0;
> +	if (!bridge->encoder) {
> +		DRM_ERROR("Parent encoder object not found");
> +		return -ENODEV;
>  	}
>  
> +	encoder->bridge = bridge;
> +
>  	connector->polled = DRM_CONNECTOR_POLL_HPD;
>  
>  	ret = drm_connector_init(dp->drm_dev, connector,
> -				 &exynos_dp_connector_funcs,
> +				 &analogix_dp_connector_funcs,
>  				 DRM_MODE_CONNECTOR_eDP);
>  	if (ret) {
>  		DRM_ERROR("Failed to initialize connector with drm\n");
>  		return ret;
>  	}
>  
> -	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
> +	drm_connector_helper_add(connector,
> +				 &analogix_dp_connector_helper_funcs);
>  	drm_connector_register(connector);
>  	drm_mode_connector_attach_encoder(connector, encoder);
>  
> -	if (dp->panel)
> -		ret = drm_panel_attach(dp->panel, &dp->connector);
> +	if (dp->plat_data && dp->plat_data->panel) {
> +		ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
> +		if (ret) {
> +			DRM_ERROR("Failed to attach panel\n");
> +			return ret;
> +		}
> +	}
> +
> +	/*
> +	 * This should be the end of attach function, caused
> +	 * we should ensure dp bridge could attach first.
> +	 */
> +	 if (dp->plat_data && dp->plat_data->attach) {
> +		 ret = dp->plat_data->attach(dp->plat_data, bridge);
> +		 if (ret) {
> +			 DRM_ERROR("Failed at platform attch func\n");

Two new error paths appeared here and above. Don't you have to
cleanup something? I don't know, just wondering...

(...)

> @@ -1345,22 +1286,9 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>  	disable_irq(dp->irq);
>  
>  	dp->drm_dev = drm_dev;
> +	dp->encoder = encoder;
>  
> -	pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
> -						  EXYNOS_DISPLAY_TYPE_LCD);
> -	if (pipe < 0)
> -		return pipe;
> -
> -	encoder->possible_crtcs = 1 << pipe;
> -
> -	DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
> -
> -	drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
> -			 DRM_MODE_ENCODER_TMDS);
> -
> -	drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
> -
> -	ret = exynos_dp_create_connector(encoder);
> +	ret = analogix_dp_create_bridge(drm_dev, dp);
>  	if (ret) {
>  		DRM_ERROR("failed to create connector ret = %d\n", ret);
>  		drm_encoder_cleanup(encoder);
> @@ -1369,103 +1297,36 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>  
>  	return 0;
>  }
> +EXPORT_SYMBOL_GPL(analogix_dp_bind);

Ooo, a new export symbol. I suppose it is necessary for the split
but the commit message does not mention exporting
anything nor the reason for doing it. Could you extend the commit
message describing more tha changes here and rationale for it?

(...)

> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
> new file mode 100644
> index 0000000..b879d8c
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
> @@ -0,0 +1,1265 @@
> +/*
> + * Analogix DP (Display port) core register interface driver.
> + *
> + * Copyright (C) 2012 Samsung Electronics Co., Ltd.
> + * Author: Jingoo Han <[e-mail]>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or (at your
> + * option) any later version.
> + */
> +
> +#include <linux/device.h>
> +#include <linux/io.h>
> +#include <linux/delay.h>
> +#include <linux/gpio.h>
> +
> +#include "analogix_dp_core.h"
> +#include "analogix_dp_reg.h"
> +
> +#define COMMON_INT_MASK_1	0
> +#define COMMON_INT_MASK_2	0
> +#define COMMON_INT_MASK_3	0
> +#define COMMON_INT_MASK_4	(HOTPLUG_CHG | HPD_LOST | PLUG)
> +#define INT_STA_MASK		INT_HPD
> +
> +void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable)
> +{
> +	u32 reg;
> +
> +	if (enable) {
> +		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
> +		reg |= HDCP_VIDEO_MUTE;
> +		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
> +	} else {
> +		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
> +		reg &= ~HDCP_VIDEO_MUTE;
> +		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
> +	}
> +}
> +
> +void analogix_dp_stop_video(struct analogix_dp_device *dp)
> +{
> +	u32 reg;
> +
> +	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
> +	reg &= ~VIDEO_EN;
> +	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
> +}
> +
> +void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable)
> +{
> +	u32 reg;
> +
> +	if (enable)
> +		reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
> +			LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
> +	else
> +		reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
> +			LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;

Here and in few other places with new code: no alignment?

You spent some time fixing these in patch 1, so I would assume
that new code already comes after "checkpatch -f --subjective".
That's actually the only valid reason for using checkpatch - new code.
However my mail reader could corrupt the output so maybe this is aligned?

Code seems fine after looking at it but review was rather shallow.
I don't know the Exynos DP driver.

Best regards,
Krzysztof

Yakir Yang Sept. 3, 2015, 3:55 a.m. UTC | #5

Hi Emil,

? 09/02/2015 10:50 PM, Emil Velikov ??:
> [Dropping the CC list]

Hmm...Don't understand what this means. If you can explain, that
would be better, so I would not miss your suggest.  :-)

> Hi Yakir Yang,
>
> On 1 September 2015 at 06:49, Yakir Yang <[e-mail]> wrote:
>> Split the dp core driver from exynos directory to bridge
>> directory, and rename the core driver to analogix_dp_*,
>> leave the platform code to analogix_dp-exynos.
>>
>> Signed-off-by: Yakir Yang <[e-mail]>
>> ---
>> Changes in v4:
>> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT propery.
>> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to "exynos_dp.c"
>> - Take Archit suggest, create a separate folder for analogix code in bridge/
>>
> "Take X suggest", is grammatically incorrect. You should use
> "suggestion(s)" or alternatively use the following approach.
>
> - Create a separate folder for analogix code in bridge/ (Archit)

Thanks for your correct. I prefer to take the last one  ;)

> Cheers,
> Emil
>
> P.S. Why do you resend the whole series (some 10+ patches) when only a
> few patches have been changed ? Are all the patches changed whist
> missing that information (vX: rebase on top of A)

Yes, those 10+ patches do base on the previous changes, specially when I
rebase my series on the latest linux-next branch.

Besides, I don't know that how to send parts of this series, and keep the
unrelated patches no send. For example if the [v4 03/16] ~ [v4 10/16]
need  update to v5, and [v4 11/16] ~ [v4 16/16] keep in v4.
So should I only send the [v5 03/16]  ~ [v5 10/16], no need to send and
update [v4 11/16] ~ [v4 16/16] to v5 ?

If so I think it would be difficult for guys to comment, cause they 
can't see
the whole series in one reply list .   ;)

Thanks,
- Yakir
>
>

Yakir Yang Sept. 3, 2015, 5:30 a.m. UTC | #6

Hi Krzysztof,

? 09/03/2015 08:58 AM, Krzysztof Kozlowski ??:
> On 01.09.2015 14:49, Yakir Yang wrote:
>> Split the dp core driver from exynos directory to bridge
>> directory, and rename the core driver to analogix_dp_*,
>> leave the platform code to analogix_dp-exynos.
>>
>> Signed-off-by: Yakir Yang <[e-mail]>
>> ---
>> Changes in v4:
>> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT propery.
>> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to "exynos_dp.c"
>> - Take Archit suggest, create a separate folder for analogix code in bridge/
>>
>> Changes in v3:
>> - Take Thierry Reding suggest, move exynos's video_timing code
>>    to analogix_dp-exynos platform driver, add get_modes method
>>    to struct analogix_dp_plat_data.
>> - Take Heiko suggest, rename some "samsung*" dts propery to "analogix*".
>>
>> Changes in v2:
>> - Take Jingoo Han suggest, remove new copyright
>> - Fix compiled failed dut to analogix_dp_device misspell
>>
>>   drivers/gpu/drm/bridge/Kconfig                     |    2 +
>>   drivers/gpu/drm/bridge/Makefile                    |    1 +
>>   drivers/gpu/drm/bridge/analogix/Kconfig            |    4 +
>>   drivers/gpu/drm/bridge/analogix/Makefile           |    1 +
>>   .../analogix/analogix_dp_core.c}                   |  817 ++++++-------
>>   drivers/gpu/drm/bridge/analogix/analogix_dp_core.h |  283 +++++
>>   drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c  | 1265 ++++++++++++++++++++
>>   .../analogix/analogix_dp_reg.h}                    |  258 ++--
>>   drivers/gpu/drm/exynos/Kconfig                     |    3 +-
>>   drivers/gpu/drm/exynos/Makefile                    |    2 +-
>>   drivers/gpu/drm/exynos/exynos_dp.c                 |  306 +++++
>>   drivers/gpu/drm/exynos/exynos_dp_core.h            |  282 -----
>>   drivers/gpu/drm/exynos/exynos_dp_reg.c             | 1259 -------------------
>>   include/drm/bridge/analogix_dp.h                   |   24 +
>>   14 files changed, 2357 insertions(+), 2150 deletions(-)
>>   create mode 100644 drivers/gpu/drm/bridge/analogix/Kconfig
>>   create mode 100644 drivers/gpu/drm/bridge/analogix/Makefile
>>   rename drivers/gpu/drm/{exynos/exynos_dp_core.c => bridge/analogix/analogix_dp_core.c} (50%)
>>   create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
>>   create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
>>   rename drivers/gpu/drm/{exynos/exynos_dp_reg.h => bridge/analogix/analogix_dp_reg.h} (64%)
>>   create mode 100644 drivers/gpu/drm/exynos/exynos_dp.c
>>   delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_core.h
>>   delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_reg.c
>>   create mode 100644 include/drm/bridge/analogix_dp.h
>>
>> diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
>> index 2de52a5..7b5b77a 100644
>> --- a/drivers/gpu/drm/bridge/Kconfig
>> +++ b/drivers/gpu/drm/bridge/Kconfig
>> @@ -29,4 +29,6 @@ config DRM_PARADE_PS8622
>>   	---help---
>>   	  Parade eDP-LVDS bridge chip driver.
>>   
>> +source "drivers/gpu/drm/bridge/analogix/Kconfig"
>> +
>>   endmenu
>> diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
>> index e2eef1c..5366c6b 100644
>> --- a/drivers/gpu/drm/bridge/Makefile
>> +++ b/drivers/gpu/drm/bridge/Makefile
>> @@ -3,3 +3,4 @@ ccflags-y := -Iinclude/drm
>>   obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
>>   obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
>>   obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
>> +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
>> diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig
>> new file mode 100644
>> index 0000000..5ff6551
>> --- /dev/null
>> +++ b/drivers/gpu/drm/bridge/analogix/Kconfig
>> @@ -0,0 +1,4 @@
>> +config DRM_ANALOGIX_DP
>> +	tristate
>> +	depends on DRM
>> +	select DRM_KMS_HELPER
>> diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile
>> new file mode 100644
>> index 0000000..9107b86
>> --- /dev/null
>> +++ b/drivers/gpu/drm/bridge/analogix/Makefile
>> @@ -0,0 +1 @@
>> +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp_core.o analogix_dp_reg.o
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> similarity index 50%
>> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
>> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> index bed0252..7d62f22 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> @@ -1,14 +1,14 @@
>>   /*
>> - * Samsung SoC DP (Display Port) interface driver.
>> - *
>> - * Copyright (C) 2012 Samsung Electronics Co., Ltd.
>> - * Author: Jingoo Han <[e-mail]>
>> - *
>> - * This program is free software; you can redistribute it and/or modify it
>> - * under the terms of the GNU General Public License as published by the
>> - * Free Software Foundation; either version 2 of the License, or (at your
>> - * option) any later version.
>> - */
>> +* Analogix DP (Display Port) core interface driver.
>> +*
>> +* Copyright (C) 2012 Samsung Electronics Co., Ltd.
>> +* Author: Jingoo Han <[e-mail]>
>> +*
>> +* This program is free software; you can redistribute it and/or modify it
>> +* under the terms of the GNU General Public License as published by the
>> +* Free Software Foundation; either version 2 of the License, or (at your
>> +* option) any later version.
>> +*/
>>   
>>   #include <linux/module.h>
>>   #include <linux/platform_device.h>
>> @@ -18,12 +18,9 @@
>>   #include <linux/interrupt.h>
>>   #include <linux/of.h>
>>   #include <linux/of_gpio.h>
>> -#include <linux/of_graph.h>
>>   #include <linux/gpio.h>
>>   #include <linux/component.h>
>>   #include <linux/phy/phy.h>
>> -#include <video/of_display_timing.h>
>> -#include <video/of_videomode.h>
>>   
>>   #include <drm/drmP.h>
>>   #include <drm/drm_crtc.h>
>> @@ -31,52 +28,42 @@
>>   #include <drm/drm_atomic_helper.h>
>>   #include <drm/drm_panel.h>
>>   
>> -#include "exynos_dp_core.h"
>> -#include "exynos_drm_crtc.h"
>> +#include <drm/bridge/analogix_dp.h>
>>   
>> -#define ctx_from_connector(c)	container_of(c, struct exynos_dp_device, \
>> -					connector)
>> +#include "analogix_dp_core.h"
>>   
>> -static inline struct exynos_drm_crtc *dp_to_crtc(struct exynos_dp_device *dp)
>> -{
>> -	return to_exynos_crtc(dp->encoder.crtc);
>> -}
>> -
>> -static inline struct exynos_dp_device *encoder_to_dp(
>> -						struct drm_encoder *e)
>> -{
>> -	return container_of(e, struct exynos_dp_device, encoder);
>> -}
>> +#define connector_to_dp(c) \
>> +	container_of(c, struct analogix_dp_device, connector)
>>   
>>   struct bridge_init {
>>   	struct i2c_client *client;
>>   	struct device_node *node;
>>   };
>>   
>> -static void exynos_dp_init_dp(struct exynos_dp_device *dp)
>> +static void analogix_dp_init_dp(struct analogix_dp_device *dp)
>>   {
>> -	exynos_dp_reset(dp);
>> +	analogix_dp_reset(dp);
>>   
>> -	exynos_dp_swreset(dp);
>> +	analogix_dp_swreset(dp);
>>   
>> -	exynos_dp_init_analog_param(dp);
>> -	exynos_dp_init_interrupt(dp);
>> +	analogix_dp_init_analog_param(dp);
>> +	analogix_dp_init_interrupt(dp);
>>   
>>   	/* SW defined function Normal operation */
>> -	exynos_dp_enable_sw_function(dp);
>> +	analogix_dp_enable_sw_function(dp);
>>   
>> -	exynos_dp_config_interrupt(dp);
>> -	exynos_dp_init_analog_func(dp);
>> +	analogix_dp_config_interrupt(dp);
>> +	analogix_dp_init_analog_func(dp);
>>   
>> -	exynos_dp_init_hpd(dp);
>> -	exynos_dp_init_aux(dp);
>> +	analogix_dp_init_hpd(dp);
>> +	analogix_dp_init_aux(dp);
>>   }
>>   
>> -static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
>> +static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
>>   {
>>   	int timeout_loop = 0;
>>   
>> -	while (exynos_dp_get_plug_in_status(dp) != 0) {
>> +	while (analogix_dp_get_plug_in_status(dp) != 0) {
>>   		timeout_loop++;
>>   		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
>>   			dev_err(dp->dev, "failed to get hpd plug status\n");
>> @@ -88,7 +75,7 @@ static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
>>   	return 0;
>>   }
>>   
>> -static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
>> +static unsigned char analogix_dp_calc_edid_check_sum(unsigned char *edid_data)
>>   {
>>   	int i;
>>   	unsigned char sum = 0;
>> @@ -99,7 +86,7 @@ static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
>>   	return sum;
>>   }
>>   
>> -static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>> +static int analogix_dp_read_edid(struct analogix_dp_device *dp)
>>   {
>>   	unsigned char edid[EDID_BLOCK_LENGTH * 2];
>>   	unsigned int extend_block = 0;
>> @@ -114,9 +101,9 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   	 */
>>   
>>   	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
>> -	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>> -					      EDID_EXTENSION_FLAG,
>> -					      &extend_block);
>> +	retval = analogix_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>> +						EDID_EXTENSION_FLAG,
>> +						&extend_block);
> Hi,
>
> What was the point of patch 1 (checkpatch -f --subjective) if you
> have to re-align the parameters again? It's meaningless.
>
> I could understand that idea if this patch touched only first
> line - name of the function. This would result in small
> and effective diff, like:
>
> -	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
> +	retval = SAME_LEGNTH____byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>   					      EDID_EXTENSION_FLAG,
>
> But this is not the case. The reviewer have to look at 6 lines
> of changes instead of two. You fixed the alignment just for two
> patches and then you re-written it. It's meaningless.

Yes, this is the place that crazy me too. After rename "exynos"
to "analogix", there would bring some "over-80-char" problem :(

> Nope. Please drop all changes from patch 1 which:
> (all conditions apply):
> 1. change alignment,
> 2. are immediately changed in next patches (e.g. like here),
>
> and fix the alignment while renaming the function.
>
> This is actually another point for not accepting commits where
> the reason is "checkpatch told me".

Okay, so there would be two patches to fix the alignment, done.

Thanks for your careful remind.

>
>
>>   	if (retval)
>>   		return retval;
>>   
>> @@ -124,7 +111,7 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>   		dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>>   
>>   		/* Read EDID data */
>> -		retval = exynos_dp_read_bytes_from_i2c(
>> +		retval = analogix_dp_read_bytes_from_i2c(
>>   					dp, I2C_EDID_DEVICE_ADDR,
>>   					EDID_HEADER_PATTERN,
>>   					EDID_BLOCK_LENGTH,
>> @@ -133,14 +120,14 @@ static int exynos_dp_read_edid(struct exynos_dp_device *dp)
> (...)
>
>> @@ -871,218 +862,204 @@ static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
>>   	return IRQ_HANDLED;
>>   }
>>   
>> -static void exynos_dp_hotplug(struct work_struct *work)
>> +static void analogix_dp_hotplug(struct work_struct *work)
>>   {
>> -	struct exynos_dp_device *dp;
>> +	struct analogix_dp_device *dp;
>>   
>> -	dp = container_of(work, struct exynos_dp_device, hotplug_work);
>> +	dp = container_of(work, struct analogix_dp_device, hotplug_work);
>>   
>>   	if (dp->drm_dev)
>>   		drm_helper_hpd_irq_event(dp->drm_dev);
>>   }
>>   
>> -static void exynos_dp_commit(struct drm_encoder *encoder)
>> +static void analogix_dp_commit(struct analogix_dp_device *dp)
>>   {
>> -	struct exynos_dp_device *dp = encoder_to_dp(encoder);
>>   	int ret;
>>   
>>   	/* Keep the panel disabled while we configure video */
>> -	if (dp->panel) {
>> -		if (drm_panel_disable(dp->panel))
>> +	if (dp->plat_data && dp->plat_data->panel) {
>> +		if (drm_panel_disable(dp->plat_data->panel))
>>   			DRM_ERROR("failed to disable the panel\n");
>>   	}
>>   
>> -	ret = exynos_dp_detect_hpd(dp);
>> +	ret = analogix_dp_detect_hpd(dp);
>>   	if (ret) {
>>   		/* Cable has been disconnected, we're done */
>>   		return;
>>   	}
>>   
>> -	ret = exynos_dp_handle_edid(dp);
>> +	ret = analogix_dp_handle_edid(dp);
>>   	if (ret) {
>>   		dev_err(dp->dev, "unable to handle edid\n");
>>   		return;
>>   	}
>>   
>> -	ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
>> -				       dp->video_info->link_rate);
>> +	ret = analogix_dp_set_link_train(dp, dp->video_info->lane_count,
>> +					 dp->video_info->link_rate);
>>   	if (ret) {
>>   		dev_err(dp->dev, "unable to do link train\n");
>>   		return;
>>   	}
>>   
>> -	exynos_dp_enable_scramble(dp, 1);
>> -	exynos_dp_enable_rx_to_enhanced_mode(dp, 1);
>> -	exynos_dp_enable_enhanced_mode(dp, 1);
>> +	analogix_dp_enable_scramble(dp, 1);
>> +	analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
>> +	analogix_dp_enable_enhanced_mode(dp, 1);
>>   
>> -	exynos_dp_set_lane_count(dp, dp->video_info->lane_count);
>> -	exynos_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
>> +	analogix_dp_set_lane_count(dp, dp->video_info->lane_count);
>> +	analogix_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
>>   
>> -	exynos_dp_init_video(dp);
>> -	ret = exynos_dp_config_video(dp);
>> +	analogix_dp_init_video(dp);
>> +	ret = analogix_dp_config_video(dp);
>>   	if (ret)
>>   		dev_err(dp->dev, "unable to config video\n");
>>   
>>   	/* Safe to enable the panel now */
>> -	if (dp->panel) {
>> -		if (drm_panel_enable(dp->panel))
>> +	if (dp->plat_data && dp->plat_data->panel) {
>> +		if (drm_panel_enable(dp->plat_data->panel))
>>   			DRM_ERROR("failed to enable the panel\n");
>>   	}
>>   
>>   	/* Enable video */
>> -	exynos_dp_start_video(dp);
>> +	analogix_dp_start_video(dp);
>>   }
>>   
>>   static enum drm_connector_status
>> -exynos_dp_detect(struct drm_connector *connector, bool force)
>> +analogix_dp_detect(struct drm_connector *connector, bool force)
>>   {
>>   	return connector_status_connected;
>>   }
>>   
>> -static void exynos_dp_connector_destroy(struct drm_connector *connector)
>> +static void analogix_dp_connector_destroy(struct drm_connector *connector)
>>   {
>>   	drm_connector_unregister(connector);
>>   	drm_connector_cleanup(connector);
>>   }
>>   
>> -static struct drm_connector_funcs exynos_dp_connector_funcs = {
>> +static struct drm_connector_funcs analogix_dp_connector_funcs = {
>>   	.dpms = drm_atomic_helper_connector_dpms,
>>   	.fill_modes = drm_helper_probe_single_connector_modes,
>> -	.detect = exynos_dp_detect,
>> -	.destroy = exynos_dp_connector_destroy,
>> +	.detect = analogix_dp_detect,
>> +	.destroy = analogix_dp_connector_destroy,
>>   	.reset = drm_atomic_helper_connector_reset,
>>   	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
>>   	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>   };
>>   
>> -static int exynos_dp_get_modes(struct drm_connector *connector)
>> +static int analogix_dp_get_modes(struct drm_connector *connector)
>>   {
>> -	struct exynos_dp_device *dp = ctx_from_connector(connector);
>> -	struct drm_display_mode *mode;
>> -
>> -	if (dp->panel)
>> -		return drm_panel_get_modes(dp->panel);
>> +	struct analogix_dp_device *dp = connector_to_dp(connector);
>> +	struct analogix_dp_plat_data *plat_data = dp->plat_data;
>> +	int num_modes = 0;
>>   
>> -	mode = drm_mode_create(connector->dev);
>> -	if (!mode) {
>> -		DRM_ERROR("failed to create a new display mode.\n");
>> -		return 0;
>> -	}
>> -
>> -	drm_display_mode_from_videomode(&dp->priv.vm, mode);
>> -	mode->width_mm = dp->priv.width_mm;
>> -	mode->height_mm = dp->priv.height_mm;
>> -	connector->display_info.width_mm = mode->width_mm;
>> -	connector->display_info.height_mm = mode->height_mm;
>> +	if (plat_data && plat_data->panel)
>> +		num_modes += drm_panel_get_modes(plat_data->panel);
>>   
>> -	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
>> -	drm_mode_set_name(mode);
>> -	drm_mode_probed_add(connector, mode);
>> +	if (plat_data && plat_data->get_modes)
>> +		 num_modes += plat_data->get_modes(plat_data, connector);
>>   
>> -	return 1;
>> +	return num_modes;
>>   }
>>   
>>   static struct drm_encoder *
>> -exynos_dp_best_encoder(struct drm_connector *connector)
>> +analogix_dp_best_encoder(struct drm_connector *connector)
>>   {
>> -	struct exynos_dp_device *dp = ctx_from_connector(connector);
>> +	struct analogix_dp_device *dp = connector_to_dp(connector);
>>   
>> -	return &dp->encoder;
>> +	return dp->encoder;
>>   }
>>   
>> -static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
>> -	.get_modes = exynos_dp_get_modes,
>> -	.best_encoder = exynos_dp_best_encoder,
>> +static struct drm_connector_helper_funcs analogix_dp_connector_helper_funcs = {
>> +	.get_modes = analogix_dp_get_modes,
>> +	.best_encoder = analogix_dp_best_encoder,
>>   };
>>   
>> -/* returns the number of bridges attached */
>> -static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>> -					struct drm_encoder *encoder)
>> -{
>> -	int ret;
>> -
>> -	encoder->bridge->next = dp->ptn_bridge;
>> -	dp->ptn_bridge->encoder = encoder;
>> -	ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
>> -	if (ret) {
>> -		DRM_ERROR("Failed to attach bridge to drm\n");
>> -		return ret;
>> -	}
>> -
>> -	return 0;
>> -}
>> -
>> -static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
>> +static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
>>   {
>> -	struct exynos_dp_device *dp = bridge->driver_private;
>> -	struct drm_encoder *encoder = &dp->encoder;
>> +	struct analogix_dp_device *dp = bridge->driver_private;
>> +	struct drm_encoder *encoder = dp->encoder;
>>   	struct drm_connector *connector = &dp->connector;
>>   	int ret;
>>   
>> -	/* Pre-empt DP connector creation if there's a bridge */
>> -	if (dp->ptn_bridge) {
>> -		ret = exynos_drm_attach_lcd_bridge(dp, encoder);
>> -		if (!ret)
>> -			return 0;
>> +	if (!bridge->encoder) {
>> +		DRM_ERROR("Parent encoder object not found");
>> +		return -ENODEV;
>>   	}
>>   
>> +	encoder->bridge = bridge;
>> +
>>   	connector->polled = DRM_CONNECTOR_POLL_HPD;
>>   
>>   	ret = drm_connector_init(dp->drm_dev, connector,
>> -				 &exynos_dp_connector_funcs,
>> +				 &analogix_dp_connector_funcs,
>>   				 DRM_MODE_CONNECTOR_eDP);
>>   	if (ret) {
>>   		DRM_ERROR("Failed to initialize connector with drm\n");
>>   		return ret;
>>   	}
>>   
>> -	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
>> +	drm_connector_helper_add(connector,
>> +				 &analogix_dp_connector_helper_funcs);
>>   	drm_connector_register(connector);
>>   	drm_mode_connector_attach_encoder(connector, encoder);
>>   
>> -	if (dp->panel)
>> -		ret = drm_panel_attach(dp->panel, &dp->connector);
>> +	if (dp->plat_data && dp->plat_data->panel) {
>> +		ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
>> +		if (ret) {
>> +			DRM_ERROR("Failed to attach panel\n");
>> +			return ret;
>> +		}
>> +	}
>> +
>> +	/*
>> +	 * This should be the end of attach function, caused
>> +	 * we should ensure dp bridge could attach first.
>> +	 */
>> +	 if (dp->plat_data && dp->plat_data->attach) {
>> +		 ret = dp->plat_data->attach(dp->plat_data, bridge);
>> +		 if (ret) {
>> +			 DRM_ERROR("Failed at platform attch func\n");
> Two new error paths appeared here and above. Don't you have to
> cleanup something? I don't know, just wondering...

Hmm... I think both panel & platform_attch need ERROR remind when
it failed. But if it still need clean, I though it is tge platform attch 
error,
this is not relate to DRM directly, just analogix driver logic, so code 
would
like.

-	if (dp->panel)
-		ret = drm_panel_attach(dp->panel, &dp->connector);
+	if (dp->plat_data && dp->plat_data->panel) {
+		ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
+		if (ret) {
+			DRM_ERROR("Failed to attach panel\n");
+			return ret;
+		}
+	}

+	/*
+	 * This should be the end of attach function, caused
+	 * we should ensure dp bridge could attach first.
+	 */
+	 if (dp->plat_data && dp->plat_data->attach) {
+		 ret = dp->plat_data->attach(dp->plat_data, bridge);

           return ret;
> (...)
>
>> @@ -1345,22 +1286,9 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>>   	disable_irq(dp->irq);
>>   
>>   	dp->drm_dev = drm_dev;
>> +	dp->encoder = encoder;
>>   
>> -	pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
>> -						  EXYNOS_DISPLAY_TYPE_LCD);
>> -	if (pipe < 0)
>> -		return pipe;
>> -
>> -	encoder->possible_crtcs = 1 << pipe;
>> -
>> -	DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
>> -
>> -	drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
>> -			 DRM_MODE_ENCODER_TMDS);
>> -
>> -	drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
>> -
>> -	ret = exynos_dp_create_connector(encoder);
>> +	ret = analogix_dp_create_bridge(drm_dev, dp);
>>   	if (ret) {
>>   		DRM_ERROR("failed to create connector ret = %d\n", ret);
>>   		drm_encoder_cleanup(encoder);
>> @@ -1369,103 +1297,36 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
>>   
>>   	return 0;
>>   }
>> +EXPORT_SYMBOL_GPL(analogix_dp_bind);
> Ooo, a new export symbol. I suppose it is necessary for the split
> but the commit message does not mention exporting
> anything nor the reason for doing it. Could you extend the commit
> message describing more tha changes here and rationale for it?

Okay, got it.

> (...)
>
>> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
>> new file mode 100644
>> index 0000000..b879d8c
>> --- /dev/null
>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
>> @@ -0,0 +1,1265 @@
>> +/*
>> + * Analogix DP (Display port) core register interface driver.
>> + *
>> + * Copyright (C) 2012 Samsung Electronics Co., Ltd.
>> + * Author: Jingoo Han <[e-mail]>
>> + *
>> + * This program is free software; you can redistribute it and/or modify it
>> + * under the terms of the GNU General Public License as published by the
>> + * Free Software Foundation; either version 2 of the License, or (at your
>> + * option) any later version.
>> + */
>> +
>> +#include <linux/device.h>
>> +#include <linux/io.h>
>> +#include <linux/delay.h>
>> +#include <linux/gpio.h>
>> +
>> +#include "analogix_dp_core.h"
>> +#include "analogix_dp_reg.h"
>> +
>> +#define COMMON_INT_MASK_1	0
>> +#define COMMON_INT_MASK_2	0
>> +#define COMMON_INT_MASK_3	0
>> +#define COMMON_INT_MASK_4	(HOTPLUG_CHG | HPD_LOST | PLUG)
>> +#define INT_STA_MASK		INT_HPD
>> +
>> +void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable)
>> +{
>> +	u32 reg;
>> +
>> +	if (enable) {
>> +		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
>> +		reg |= HDCP_VIDEO_MUTE;
>> +		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
>> +	} else {
>> +		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
>> +		reg &= ~HDCP_VIDEO_MUTE;
>> +		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
>> +	}
>> +}
>> +
>> +void analogix_dp_stop_video(struct analogix_dp_device *dp)
>> +{
>> +	u32 reg;
>> +
>> +	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
>> +	reg &= ~VIDEO_EN;
>> +	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
>> +}
>> +
>> +void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable)
>> +{
>> +	u32 reg;
>> +
>> +	if (enable)
>> +		reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
>> +			LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
>> +	else
>> +		reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
>> +			LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
> Here and in few other places with new code: no alignment?
>
> You spent some time fixing these in patch 1, so I would assume
> that new code already comes after "checkpatch -f --subjective".
> That's actually the only valid reason for using checkpatch - new code.
> However my mail reader could corrupt the output so maybe this is aligned?

This is another mistaken I make, and surprise by that checkpatch
fine with this no-alignment style. Anyway I would just do rename
change in this split patch, and move the style change to another
separate patch (maybe I should adjust the order, correct style
problem after this patch).


> Code seems fine after looking at it but review was rather shallow.
> I don't know the Exynos DP driver.

I really appreciate for your careful review  ;)

- Yakir
> Best regards,
> Krzysztof
>
>
>
>

Krzysztof Kozlowski Sept. 4, 2015, 12:41 a.m. UTC | #7

On 03.09.2015 14:30, Yakir Yang wrote:
> Hi Krzysztof,
> 
> ? 09/03/2015 08:58 AM, Krzysztof Kozlowski ??:
>> On 01.09.2015 14:49, Yakir Yang wrote:
>>> Split the dp core driver from exynos directory to bridge
>>> directory, and rename the core driver to analogix_dp_*,
>>> leave the platform code to analogix_dp-exynos.
>>>
>>> Signed-off-by: Yakir Yang <[e-mail]>
>>> ---
>>> Changes in v4:
>>> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT
>>> propery.
>>> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to
>>> "exynos_dp.c"
>>> - Take Archit suggest, create a separate folder for analogix code in
>>> bridge/
>>>
>>> Changes in v3:
>>> - Take Thierry Reding suggest, move exynos's video_timing code
>>>    to analogix_dp-exynos platform driver, add get_modes method
>>>    to struct analogix_dp_plat_data.
>>> - Take Heiko suggest, rename some "samsung*" dts propery to "analogix*".
>>>
>>> Changes in v2:
>>> - Take Jingoo Han suggest, remove new copyright
>>> - Fix compiled failed dut to analogix_dp_device misspell
>>>
>>>   drivers/gpu/drm/bridge/Kconfig                     |    2 +
>>>   drivers/gpu/drm/bridge/Makefile                    |    1 +
>>>   drivers/gpu/drm/bridge/analogix/Kconfig            |    4 +
>>>   drivers/gpu/drm/bridge/analogix/Makefile           |    1 +
>>>   .../analogix/analogix_dp_core.c}                   |  817
>>> ++++++-------
>>>   drivers/gpu/drm/bridge/analogix/analogix_dp_core.h |  283 +++++
>>>   drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c  | 1265
>>> ++++++++++++++++++++
>>>   .../analogix/analogix_dp_reg.h}                    |  258 ++--
>>>   drivers/gpu/drm/exynos/Kconfig                     |    3 +-
>>>   drivers/gpu/drm/exynos/Makefile                    |    2 +-
>>>   drivers/gpu/drm/exynos/exynos_dp.c                 |  306 +++++
>>>   drivers/gpu/drm/exynos/exynos_dp_core.h            |  282 -----
>>>   drivers/gpu/drm/exynos/exynos_dp_reg.c             | 1259
>>> -------------------
>>>   include/drm/bridge/analogix_dp.h                   |   24 +
>>>   14 files changed, 2357 insertions(+), 2150 deletions(-)
>>>   create mode 100644 drivers/gpu/drm/bridge/analogix/Kconfig
>>>   create mode 100644 drivers/gpu/drm/bridge/analogix/Makefile
>>>   rename drivers/gpu/drm/{exynos/exynos_dp_core.c =>
>>> bridge/analogix/analogix_dp_core.c} (50%)
>>>   create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
>>>   create mode 100644 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
>>>   rename drivers/gpu/drm/{exynos/exynos_dp_reg.h =>
>>> bridge/analogix/analogix_dp_reg.h} (64%)
>>>   create mode 100644 drivers/gpu/drm/exynos/exynos_dp.c
>>>   delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_core.h
>>>   delete mode 100644 drivers/gpu/drm/exynos/exynos_dp_reg.c
>>>   create mode 100644 include/drm/bridge/analogix_dp.h
>>>
>>> diff --git a/drivers/gpu/drm/bridge/Kconfig
>>> b/drivers/gpu/drm/bridge/Kconfig
>>> index 2de52a5..7b5b77a 100644
>>> --- a/drivers/gpu/drm/bridge/Kconfig
>>> +++ b/drivers/gpu/drm/bridge/Kconfig
>>> @@ -29,4 +29,6 @@ config DRM_PARADE_PS8622
>>>       ---help---
>>>         Parade eDP-LVDS bridge chip driver.
>>>   +source "drivers/gpu/drm/bridge/analogix/Kconfig"
>>> +
>>>   endmenu
>>> diff --git a/drivers/gpu/drm/bridge/Makefile
>>> b/drivers/gpu/drm/bridge/Makefile
>>> index e2eef1c..5366c6b 100644
>>> --- a/drivers/gpu/drm/bridge/Makefile
>>> +++ b/drivers/gpu/drm/bridge/Makefile
>>> @@ -3,3 +3,4 @@ ccflags-y := -Iinclude/drm
>>>   obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
>>>   obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
>>>   obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
>>> +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
>>> diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig
>>> b/drivers/gpu/drm/bridge/analogix/Kconfig
>>> new file mode 100644
>>> index 0000000..5ff6551
>>> --- /dev/null
>>> +++ b/drivers/gpu/drm/bridge/analogix/Kconfig
>>> @@ -0,0 +1,4 @@
>>> +config DRM_ANALOGIX_DP
>>> +    tristate
>>> +    depends on DRM
>>> +    select DRM_KMS_HELPER
>>> diff --git a/drivers/gpu/drm/bridge/analogix/Makefile
>>> b/drivers/gpu/drm/bridge/analogix/Makefile
>>> new file mode 100644
>>> index 0000000..9107b86
>>> --- /dev/null
>>> +++ b/drivers/gpu/drm/bridge/analogix/Makefile
>>> @@ -0,0 +1 @@
>>> +obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp_core.o analogix_dp_reg.o
>>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
>>> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>>> similarity index 50%
>>> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
>>> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>>> index bed0252..7d62f22 100644
>>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>>> @@ -1,14 +1,14 @@
>>>   /*
>>> - * Samsung SoC DP (Display Port) interface driver.
>>> - *
>>> - * Copyright (C) 2012 Samsung Electronics Co., Ltd.
>>> - * Author: Jingoo Han <[e-mail]>
>>> - *
>>> - * This program is free software; you can redistribute it and/or
>>> modify it
>>> - * under the terms of the GNU General Public License as published by
>>> the
>>> - * Free Software Foundation; either version 2 of the License, or (at
>>> your
>>> - * option) any later version.
>>> - */
>>> +* Analogix DP (Display Port) core interface driver.
>>> +*
>>> +* Copyright (C) 2012 Samsung Electronics Co., Ltd.
>>> +* Author: Jingoo Han <[e-mail]>
>>> +*
>>> +* This program is free software; you can redistribute it and/or
>>> modify it
>>> +* under the terms of the GNU General Public License as published by the
>>> +* Free Software Foundation; either version 2 of the License, or (at
>>> your
>>> +* option) any later version.
>>> +*/
>>>     #include <linux/module.h>
>>>   #include <linux/platform_device.h>
>>> @@ -18,12 +18,9 @@
>>>   #include <linux/interrupt.h>
>>>   #include <linux/of.h>
>>>   #include <linux/of_gpio.h>
>>> -#include <linux/of_graph.h>
>>>   #include <linux/gpio.h>
>>>   #include <linux/component.h>
>>>   #include <linux/phy/phy.h>
>>> -#include <video/of_display_timing.h>
>>> -#include <video/of_videomode.h>
>>>     #include <drm/drmP.h>
>>>   #include <drm/drm_crtc.h>
>>> @@ -31,52 +28,42 @@
>>>   #include <drm/drm_atomic_helper.h>
>>>   #include <drm/drm_panel.h>
>>>   -#include "exynos_dp_core.h"
>>> -#include "exynos_drm_crtc.h"
>>> +#include <drm/bridge/analogix_dp.h>
>>>   -#define ctx_from_connector(c)    container_of(c, struct
>>> exynos_dp_device, \
>>> -                    connector)
>>> +#include "analogix_dp_core.h"
>>>   -static inline struct exynos_drm_crtc *dp_to_crtc(struct
>>> exynos_dp_device *dp)
>>> -{
>>> -    return to_exynos_crtc(dp->encoder.crtc);
>>> -}
>>> -
>>> -static inline struct exynos_dp_device *encoder_to_dp(
>>> -                        struct drm_encoder *e)
>>> -{
>>> -    return container_of(e, struct exynos_dp_device, encoder);
>>> -}
>>> +#define connector_to_dp(c) \
>>> +    container_of(c, struct analogix_dp_device, connector)
>>>     struct bridge_init {
>>>       struct i2c_client *client;
>>>       struct device_node *node;
>>>   };
>>>   -static void exynos_dp_init_dp(struct exynos_dp_device *dp)
>>> +static void analogix_dp_init_dp(struct analogix_dp_device *dp)
>>>   {
>>> -    exynos_dp_reset(dp);
>>> +    analogix_dp_reset(dp);
>>>   -    exynos_dp_swreset(dp);
>>> +    analogix_dp_swreset(dp);
>>>   -    exynos_dp_init_analog_param(dp);
>>> -    exynos_dp_init_interrupt(dp);
>>> +    analogix_dp_init_analog_param(dp);
>>> +    analogix_dp_init_interrupt(dp);
>>>         /* SW defined function Normal operation */
>>> -    exynos_dp_enable_sw_function(dp);
>>> +    analogix_dp_enable_sw_function(dp);
>>>   -    exynos_dp_config_interrupt(dp);
>>> -    exynos_dp_init_analog_func(dp);
>>> +    analogix_dp_config_interrupt(dp);
>>> +    analogix_dp_init_analog_func(dp);
>>>   -    exynos_dp_init_hpd(dp);
>>> -    exynos_dp_init_aux(dp);
>>> +    analogix_dp_init_hpd(dp);
>>> +    analogix_dp_init_aux(dp);
>>>   }
>>>   -static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
>>> +static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
>>>   {
>>>       int timeout_loop = 0;
>>>   -    while (exynos_dp_get_plug_in_status(dp) != 0) {
>>> +    while (analogix_dp_get_plug_in_status(dp) != 0) {
>>>           timeout_loop++;
>>>           if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
>>>               dev_err(dp->dev, "failed to get hpd plug status\n");
>>> @@ -88,7 +75,7 @@ static int exynos_dp_detect_hpd(struct
>>> exynos_dp_device *dp)
>>>       return 0;
>>>   }
>>>   -static unsigned char exynos_dp_calc_edid_check_sum(unsigned char
>>> *edid_data)
>>> +static unsigned char analogix_dp_calc_edid_check_sum(unsigned char
>>> *edid_data)
>>>   {
>>>       int i;
>>>       unsigned char sum = 0;
>>> @@ -99,7 +86,7 @@ static unsigned char
>>> exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
>>>       return sum;
>>>   }
>>>   -static int exynos_dp_read_edid(struct exynos_dp_device *dp)
>>> +static int analogix_dp_read_edid(struct analogix_dp_device *dp)
>>>   {
>>>       unsigned char edid[EDID_BLOCK_LENGTH * 2];
>>>       unsigned int extend_block = 0;
>>> @@ -114,9 +101,9 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>>>        */
>>>         /* Read Extension Flag, Number of 128-byte EDID extension
>>> blocks */
>>> -    retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>>> -                          EDID_EXTENSION_FLAG,
>>> -                          &extend_block);
>>> +    retval = analogix_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>>> +                        EDID_EXTENSION_FLAG,
>>> +                        &extend_block);
>> Hi,
>>
>> What was the point of patch 1 (checkpatch -f --subjective) if you
>> have to re-align the parameters again? It's meaningless.
>>
>> I could understand that idea if this patch touched only first
>> line - name of the function. This would result in small
>> and effective diff, like:
>>
>> -    retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>> +    retval = SAME_LEGNTH____byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
>>                             EDID_EXTENSION_FLAG,
>>
>> But this is not the case. The reviewer have to look at 6 lines
>> of changes instead of two. You fixed the alignment just for two
>> patches and then you re-written it. It's meaningless.
> 
> Yes, this is the place that crazy me too. After rename "exynos"
> to "analogix", there would bring some "over-80-char" problem :(

If you can't avoid it then it's okay. When you rename the function this
could happen and then you just re-align the block.

> 
>> Nope. Please drop all changes from patch 1 which:
>> (all conditions apply):
>> 1. change alignment,
>> 2. are immediately changed in next patches (e.g. like here),
>>
>> and fix the alignment while renaming the function.
>>
>> This is actually another point for not accepting commits where
>> the reason is "checkpatch told me".
> 
> Okay, so there would be two patches to fix the alignment, done.
> 
> Thanks for your careful remind.

Two patches but fixing alignment in different places. Do not fix the
alignment in 1/16 and then re-align the same line at 3/16.


> 
>>
>>
>>>       if (retval)
>>>           return retval;
>>>   @@ -124,7 +111,7 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>>>           dev_dbg(dp->dev, "EDID data includes a single extension!\n");
>>>             /* Read EDID data */
>>> -        retval = exynos_dp_read_bytes_from_i2c(
>>> +        retval = analogix_dp_read_bytes_from_i2c(
>>>                       dp, I2C_EDID_DEVICE_ADDR,
>>>                       EDID_HEADER_PATTERN,
>>>                       EDID_BLOCK_LENGTH,
>>> @@ -133,14 +120,14 @@ static int exynos_dp_read_edid(struct
>>> exynos_dp_device *dp)
>> (...)
>>
>>> @@ -871,218 +862,204 @@ static irqreturn_t exynos_dp_irq_handler(int
>>> irq, void *arg)
>>>       return IRQ_HANDLED;
>>>   }
>>>   -static void exynos_dp_hotplug(struct work_struct *work)
>>> +static void analogix_dp_hotplug(struct work_struct *work)
>>>   {
>>> -    struct exynos_dp_device *dp;
>>> +    struct analogix_dp_device *dp;
>>>   -    dp = container_of(work, struct exynos_dp_device, hotplug_work);
>>> +    dp = container_of(work, struct analogix_dp_device, hotplug_work);
>>>         if (dp->drm_dev)
>>>           drm_helper_hpd_irq_event(dp->drm_dev);
>>>   }
>>>   -static void exynos_dp_commit(struct drm_encoder *encoder)
>>> +static void analogix_dp_commit(struct analogix_dp_device *dp)
>>>   {
>>> -    struct exynos_dp_device *dp = encoder_to_dp(encoder);
>>>       int ret;
>>>         /* Keep the panel disabled while we configure video */
>>> -    if (dp->panel) {
>>> -        if (drm_panel_disable(dp->panel))
>>> +    if (dp->plat_data && dp->plat_data->panel) {
>>> +        if (drm_panel_disable(dp->plat_data->panel))
>>>               DRM_ERROR("failed to disable the panel\n");
>>>       }
>>>   -    ret = exynos_dp_detect_hpd(dp);
>>> +    ret = analogix_dp_detect_hpd(dp);
>>>       if (ret) {
>>>           /* Cable has been disconnected, we're done */
>>>           return;
>>>       }
>>>   -    ret = exynos_dp_handle_edid(dp);
>>> +    ret = analogix_dp_handle_edid(dp);
>>>       if (ret) {
>>>           dev_err(dp->dev, "unable to handle edid\n");
>>>           return;
>>>       }
>>>   -    ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
>>> -                       dp->video_info->link_rate);
>>> +    ret = analogix_dp_set_link_train(dp, dp->video_info->lane_count,
>>> +                     dp->video_info->link_rate);
>>>       if (ret) {
>>>           dev_err(dp->dev, "unable to do link train\n");
>>>           return;
>>>       }
>>>   -    exynos_dp_enable_scramble(dp, 1);
>>> -    exynos_dp_enable_rx_to_enhanced_mode(dp, 1);
>>> -    exynos_dp_enable_enhanced_mode(dp, 1);
>>> +    analogix_dp_enable_scramble(dp, 1);
>>> +    analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
>>> +    analogix_dp_enable_enhanced_mode(dp, 1);
>>>   -    exynos_dp_set_lane_count(dp, dp->video_info->lane_count);
>>> -    exynos_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
>>> +    analogix_dp_set_lane_count(dp, dp->video_info->lane_count);
>>> +    analogix_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
>>>   -    exynos_dp_init_video(dp);
>>> -    ret = exynos_dp_config_video(dp);
>>> +    analogix_dp_init_video(dp);
>>> +    ret = analogix_dp_config_video(dp);
>>>       if (ret)
>>>           dev_err(dp->dev, "unable to config video\n");
>>>         /* Safe to enable the panel now */
>>> -    if (dp->panel) {
>>> -        if (drm_panel_enable(dp->panel))
>>> +    if (dp->plat_data && dp->plat_data->panel) {
>>> +        if (drm_panel_enable(dp->plat_data->panel))
>>>               DRM_ERROR("failed to enable the panel\n");
>>>       }
>>>         /* Enable video */
>>> -    exynos_dp_start_video(dp);
>>> +    analogix_dp_start_video(dp);
>>>   }
>>>     static enum drm_connector_status
>>> -exynos_dp_detect(struct drm_connector *connector, bool force)
>>> +analogix_dp_detect(struct drm_connector *connector, bool force)
>>>   {
>>>       return connector_status_connected;
>>>   }
>>>   -static void exynos_dp_connector_destroy(struct drm_connector
>>> *connector)
>>> +static void analogix_dp_connector_destroy(struct drm_connector
>>> *connector)
>>>   {
>>>       drm_connector_unregister(connector);
>>>       drm_connector_cleanup(connector);
>>>   }
>>>   -static struct drm_connector_funcs exynos_dp_connector_funcs = {
>>> +static struct drm_connector_funcs analogix_dp_connector_funcs = {
>>>       .dpms = drm_atomic_helper_connector_dpms,
>>>       .fill_modes = drm_helper_probe_single_connector_modes,
>>> -    .detect = exynos_dp_detect,
>>> -    .destroy = exynos_dp_connector_destroy,
>>> +    .detect = analogix_dp_detect,
>>> +    .destroy = analogix_dp_connector_destroy,
>>>       .reset = drm_atomic_helper_connector_reset,
>>>       .atomic_duplicate_state =
>>> drm_atomic_helper_connector_duplicate_state,
>>>       .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>>>   };
>>>   -static int exynos_dp_get_modes(struct drm_connector *connector)
>>> +static int analogix_dp_get_modes(struct drm_connector *connector)
>>>   {
>>> -    struct exynos_dp_device *dp = ctx_from_connector(connector);
>>> -    struct drm_display_mode *mode;
>>> -
>>> -    if (dp->panel)
>>> -        return drm_panel_get_modes(dp->panel);
>>> +    struct analogix_dp_device *dp = connector_to_dp(connector);
>>> +    struct analogix_dp_plat_data *plat_data = dp->plat_data;
>>> +    int num_modes = 0;
>>>   -    mode = drm_mode_create(connector->dev);
>>> -    if (!mode) {
>>> -        DRM_ERROR("failed to create a new display mode.\n");
>>> -        return 0;
>>> -    }
>>> -
>>> -    drm_display_mode_from_videomode(&dp->priv.vm, mode);
>>> -    mode->width_mm = dp->priv.width_mm;
>>> -    mode->height_mm = dp->priv.height_mm;
>>> -    connector->display_info.width_mm = mode->width_mm;
>>> -    connector->display_info.height_mm = mode->height_mm;
>>> +    if (plat_data && plat_data->panel)
>>> +        num_modes += drm_panel_get_modes(plat_data->panel);
>>>   -    mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
>>> -    drm_mode_set_name(mode);
>>> -    drm_mode_probed_add(connector, mode);
>>> +    if (plat_data && plat_data->get_modes)
>>> +         num_modes += plat_data->get_modes(plat_data, connector);
>>>   -    return 1;
>>> +    return num_modes;
>>>   }
>>>     static struct drm_encoder *
>>> -exynos_dp_best_encoder(struct drm_connector *connector)
>>> +analogix_dp_best_encoder(struct drm_connector *connector)
>>>   {
>>> -    struct exynos_dp_device *dp = ctx_from_connector(connector);
>>> +    struct analogix_dp_device *dp = connector_to_dp(connector);
>>>   -    return &dp->encoder;
>>> +    return dp->encoder;
>>>   }
>>>   -static struct drm_connector_helper_funcs
>>> exynos_dp_connector_helper_funcs = {
>>> -    .get_modes = exynos_dp_get_modes,
>>> -    .best_encoder = exynos_dp_best_encoder,
>>> +static struct drm_connector_helper_funcs
>>> analogix_dp_connector_helper_funcs = {
>>> +    .get_modes = analogix_dp_get_modes,
>>> +    .best_encoder = analogix_dp_best_encoder,
>>>   };
>>>   -/* returns the number of bridges attached */
>>> -static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
>>> -                    struct drm_encoder *encoder)
>>> -{
>>> -    int ret;
>>> -
>>> -    encoder->bridge->next = dp->ptn_bridge;
>>> -    dp->ptn_bridge->encoder = encoder;
>>> -    ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
>>> -    if (ret) {
>>> -        DRM_ERROR("Failed to attach bridge to drm\n");
>>> -        return ret;
>>> -    }
>>> -
>>> -    return 0;
>>> -}
>>> -
>>> -static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
>>> +static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
>>>   {
>>> -    struct exynos_dp_device *dp = bridge->driver_private;
>>> -    struct drm_encoder *encoder = &dp->encoder;
>>> +    struct analogix_dp_device *dp = bridge->driver_private;
>>> +    struct drm_encoder *encoder = dp->encoder;
>>>       struct drm_connector *connector = &dp->connector;
>>>       int ret;
>>>   -    /* Pre-empt DP connector creation if there's a bridge */
>>> -    if (dp->ptn_bridge) {
>>> -        ret = exynos_drm_attach_lcd_bridge(dp, encoder);
>>> -        if (!ret)
>>> -            return 0;
>>> +    if (!bridge->encoder) {
>>> +        DRM_ERROR("Parent encoder object not found");
>>> +        return -ENODEV;
>>>       }
>>>   +    encoder->bridge = bridge;
>>> +
>>>       connector->polled = DRM_CONNECTOR_POLL_HPD;
>>>         ret = drm_connector_init(dp->drm_dev, connector,
>>> -                 &exynos_dp_connector_funcs,
>>> +                 &analogix_dp_connector_funcs,
>>>                    DRM_MODE_CONNECTOR_eDP);
>>>       if (ret) {
>>>           DRM_ERROR("Failed to initialize connector with drm\n");
>>>           return ret;
>>>       }
>>>   -    drm_connector_helper_add(connector,
>>> &exynos_dp_connector_helper_funcs);
>>> +    drm_connector_helper_add(connector,
>>> +                 &analogix_dp_connector_helper_funcs);
>>>       drm_connector_register(connector);
>>>       drm_mode_connector_attach_encoder(connector, encoder);
>>>   -    if (dp->panel)
>>> -        ret = drm_panel_attach(dp->panel, &dp->connector);
>>> +    if (dp->plat_data && dp->plat_data->panel) {
>>> +        ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
>>> +        if (ret) {
>>> +            DRM_ERROR("Failed to attach panel\n");
>>> +            return ret;
>>> +        }
>>> +    }
>>> +
>>> +    /*
>>> +     * This should be the end of attach function, caused
>>> +     * we should ensure dp bridge could attach first.
>>> +     */
>>> +     if (dp->plat_data && dp->plat_data->attach) {
>>> +         ret = dp->plat_data->attach(dp->plat_data, bridge);
>>> +         if (ret) {
>>> +             DRM_ERROR("Failed at platform attch func\n");
>> Two new error paths appeared here and above. Don't you have to
>> cleanup something? I don't know, just wondering...
> 
> Hmm... I think both panel & platform_attch need ERROR remind when
> it failed. But if it still need clean, I though it is tge platform attch
> error,
> this is not relate to DRM directly, just analogix driver logic, so code
> would
> like.
> 
> -    if (dp->panel)
> -        ret = drm_panel_attach(dp->panel, &dp->connector);
> +    if (dp->plat_data && dp->plat_data->panel) {
> +        ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
> +        if (ret) {
> +            DRM_ERROR("Failed to attach panel\n");
> +            return ret;
> +        }
> +    }
> 
> +    /*
> +     * This should be the end of attach function, caused
> +     * we should ensure dp bridge could attach first.
> +     */
> +     if (dp->plat_data && dp->plat_data->attach) {
> +         ret = dp->plat_data->attach(dp->plat_data, bridge);
> 
>           return ret;

I am lost... the code looks the same. What did you change?

Best regards,
Krzysztof

Rob Herring Sept. 4, 2015, 9:06 p.m. UTC | #8

On Tue, Sep 1, 2015 at 3:46 PM, Heiko Stuebner <[e-mail]> wrote:
> Am Dienstag, 1. September 2015, 13:49:58 schrieb Yakir Yang:
>> Split the dp core driver from exynos directory to bridge
>> directory, and rename the core driver to analogix_dp_*,
>> leave the platform code to analogix_dp-exynos.
>>
>> Signed-off-by: Yakir Yang <[e-mail]>
>
> [...]
>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c similarity index 50%
>> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
>> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>> index bed0252..7d62f22 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
>
> [...]
>
>>       connector->polled = DRM_CONNECTOR_POLL_HPD;
>>
>>       ret = drm_connector_init(dp->drm_dev, connector,
>> -                              &exynos_dp_connector_funcs,
>> +                              &analogix_dp_connector_funcs,
>>                                DRM_MODE_CONNECTOR_eDP);
>>       if (ret) {
>>               DRM_ERROR("Failed to initialize connector with drm\n");
>>               return ret;
>>       }
>>
>> -     drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
>> +     drm_connector_helper_add(connector,
>> +                              &analogix_dp_connector_helper_funcs);
>>       drm_connector_register(connector);
>
> this should only run on exynos, as we're doing all our connector registration
> in the core driver after all components are bound, so I guess something like
> the following is needed:
>
>        if (dp->plat_data && dp->plat_data->dev_type == EXYNOS_DP)
>                drm_connector_register(connector);

Yuck!

Surely there is a better way. From what I've seen of DRM, I have no
doubt this is needed, but really a better solution is needed. Surely
there can be a more generic way for the driver to determine if it
should handle the connector or not. This seems like a common problem
including one I have seen. What I'm working on has onchip DSI encoder
-> ADV7533 -> HDMI. The DSI encoder can also have a direct attached
panel. So I have to check for a bridge in the encoder driver and only
register the connector for the panel if a bridge is not attached.

Rob

Heiko Stuebner Sept. 4, 2015, 9:29 p.m. UTC | #9

Am Freitag, 4. September 2015, 16:06:02 schrieb Rob Herring:
> On Tue, Sep 1, 2015 at 3:46 PM, Heiko Stuebner <[e-mail]> wrote:
> > Am Dienstag, 1. September 2015, 13:49:58 schrieb Yakir Yang:
> >> Split the dp core driver from exynos directory to bridge
> >> directory, and rename the core driver to analogix_dp_*,
> >> leave the platform code to analogix_dp-exynos.
> >> 
> >> Signed-off-by: Yakir Yang <[e-mail]>
> > 
> > [...]
> > 
> >> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
> >> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c similarity index 50%
> >> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
> >> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> >> index bed0252..7d62f22 100644
> >> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> >> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> > 
> > [...]
> > 
> >>       connector->polled = DRM_CONNECTOR_POLL_HPD;
> >>       
> >>       ret = drm_connector_init(dp->drm_dev, connector,
> >> 
> >> -                              &exynos_dp_connector_funcs,
> >> +                              &analogix_dp_connector_funcs,
> >> 
> >>                                DRM_MODE_CONNECTOR_eDP);
> >>       
> >>       if (ret) {
> >>       
> >>               DRM_ERROR("Failed to initialize connector with drm\n");
> >>               return ret;
> >>       
> >>       }
> >> 
> >> -     drm_connector_helper_add(connector,
> >> &exynos_dp_connector_helper_funcs); +    
> >> drm_connector_helper_add(connector,
> >> +                              &analogix_dp_connector_helper_funcs);
> >> 
> >>       drm_connector_register(connector);
> > 
> > this should only run on exynos, as we're doing all our connector
> > registration in the core driver after all components are bound, so I
> > guess something like> 
> > the following is needed:
> >        if (dp->plat_data && dp->plat_data->dev_type == EXYNOS_DP)
> >        
> >                drm_connector_register(connector);
> 
> Yuck!
> 
> Surely there is a better way. From what I've seen of DRM, I have no
> doubt this is needed, but really a better solution is needed. Surely
> there can be a more generic way for the driver to determine if it
> should handle the connector or not. This seems like a common problem
> including one I have seen. What I'm working on has onchip DSI encoder
> -> ADV7533 -> HDMI. The DSI encoder can also have a direct attached
> panel. So I have to check for a bridge in the encoder driver and only
> register the connector for the panel if a bridge is not attached.

I'm also only a part-time drm meddler, so things may be inaccurate.

This conditional is not meant to prevent the registration of the dp connector, 
only delay it for non-exynos drms. The connector registration does publish it 
to userspace, so like i.MX we're doing that for all connectors at the same 
time after all components are bound - to also make x11 happy. Exynos on the 
other hand seems to register its connectors individually and I'm not sure if 
they would be willing to change that.

see d3007dabeff4 ("drm/rockchip: register all connectors after bind") or 
simply rockchip_drm_drv.c line 178.

and e355e7dd607b ("imx-drm: delay publishing sysfs connector entries")


Heiko

Yakir Yang Sept. 6, 2015, 7:49 a.m. UTC | #10

Hi Krzysztof,

? 09/04/2015 08:41 AM, Krzysztof Kozlowski ??:
> On 03.09.2015 14:30, Yakir Yang wrote:
>> Hi Krzysztof,
>>
>> ? 09/03/2015 08:58 AM, Krzysztof Kozlowski ??:
>>> On 01.09.2015 14:49, Yakir Yang wrote:
>>>> Split the dp core driver from exynos directory to bridge
>>>> directory, and rename the core driver to analogix_dp_*,
>>>> leave the platform code to analogix_dp-exynos.
>>>>
>>>> Signed-off-by: Yakir Yang <[e-mail]>
>>>> ---
>>>> Changes in v4:
>>>> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT
>>>> propery.
>>>> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to
>>>> "exynos_dp.c"
>>>> - Take Archit suggest, create a separate folder for analogix code in
>>>> bridge/
>>>>
>>>> Changes in v3:
>>>> - Take Thierry Reding suggest, move exynos's video_timing code
>>>>     to analogix_dp-exynos platform driver, add get_modes method
>>>>     to struct analogix_dp_plat_data.
>>>> - Take Heiko suggest, rename some "samsung*" dts propery to "analogix*".
>>>>
>>>> Changes in v2:
>>>> - Take Jingoo Han suggest, remove new copyright
>>>> - Fix compiled failed dut to analogix_dp_device misspell

[.....]

>>>> -static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
>>>> +static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
>>>>    {
>>>> -    struct exynos_dp_device *dp = bridge->driver_private;
>>>> -    struct drm_encoder *encoder = &dp->encoder;
>>>> +    struct analogix_dp_device *dp = bridge->driver_private;
>>>> +    struct drm_encoder *encoder = dp->encoder;
>>>>        struct drm_connector *connector = &dp->connector;
>>>>        int ret;
>>>>    -    /* Pre-empt DP connector creation if there's a bridge */
>>>> -    if (dp->ptn_bridge) {
>>>> -        ret = exynos_drm_attach_lcd_bridge(dp, encoder);
>>>> -        if (!ret)
>>>> -            return 0;
>>>> +    if (!bridge->encoder) {
>>>> +        DRM_ERROR("Parent encoder object not found");
>>>> +        return -ENODEV;
>>>>        }
>>>>    +    encoder->bridge = bridge;
>>>> +
>>>>        connector->polled = DRM_CONNECTOR_POLL_HPD;
>>>>          ret = drm_connector_init(dp->drm_dev, connector,
>>>> -                 &exynos_dp_connector_funcs,
>>>> +                 &analogix_dp_connector_funcs,
>>>>                     DRM_MODE_CONNECTOR_eDP);
>>>>        if (ret) {
>>>>            DRM_ERROR("Failed to initialize connector with drm\n");
>>>>            return ret;
>>>>        }
>>>>    -    drm_connector_helper_add(connector,
>>>> &exynos_dp_connector_helper_funcs);
>>>> +    drm_connector_helper_add(connector,
>>>> +                 &analogix_dp_connector_helper_funcs);
>>>>        drm_connector_register(connector);
>>>>        drm_mode_connector_attach_encoder(connector, encoder);
>>>>    -    if (dp->panel)
>>>> -        ret = drm_panel_attach(dp->panel, &dp->connector);
>>>> +    if (dp->plat_data && dp->plat_data->panel) {
>>>> +        ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
>>>> +        if (ret) {
>>>> +            DRM_ERROR("Failed to attach panel\n");
>>>> +            return ret;
>>>> +        }
>>>> +    }
>>>> +
>>>> +    /*
>>>> +     * This should be the end of attach function, caused
>>>> +     * we should ensure dp bridge could attach first.
>>>> +     */
>>>> +     if (dp->plat_data && dp->plat_data->attach) {
>>>> +         ret = dp->plat_data->attach(dp->plat_data, bridge);
>>>> +         if (ret) {
>>>> +             DRM_ERROR("Failed at platform attch func\n");
>>> Two new error paths appeared here and above. Don't you have to
>>> cleanup something? I don't know, just wondering...
>> Hmm... I think both panel & platform_attch need ERROR remind when
>> it failed. But if it still need clean, I though it should clean the platform attch
>> error,
>> this is not relate to DRM directly, just analogix driver logic, so code would like,
>>
>> -    if (dp->panel)
>> -        ret = drm_panel_attach(dp->panel, &dp->connector);
>> +    if (dp->plat_data && dp->plat_data->panel) {
>> +        ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
>> +        if (ret) {
>> +            DRM_ERROR("Failed to attach panel\n");
>> +            return ret;
>> +        }
>> +    }
>>
>> +    /*
>> +     * This should be the end of attach function, caused
>> +     * we should ensure dp bridge could attach first.
>> +     */
>> +     if (dp->plat_data && dp->plat_data->attach) {
>> +         ret = dp->plat_data->attach(dp->plat_data, bridge);
>>
>>            return ret;
> I am lost... the code looks the same. What did you change?

I just remove the DRM_ERROR after dp->plat_data->attach(),
maybe I should paste the change that rebase on this patch,
here are they,

     /*
      * This should be the end of attach function, caused
      * we should ensure dp bridge could attach first.
      */
-     if (dp->plat_data && dp->plat_data->attach) {
+     if (dp->plat_data && dp->plat_data->attach)
            ret = dp->plat_data->attach(dp->plat_data, bridge);
-          if (ret) {
-              DRM_ERROR("Failed at platform attch func\n");
-              return ret;
-          }
-      }

-    return 0;
+   return ret;


If this haven't meet your comment, I maybe start to think that
your comment  "Two new error paths appeared here and above"
indicated that those two function is the same.
     "dp->plat_data->attach(dp->plat_data, bridge); "
     "drm_panel_attach(dp->plat_data->panel, &dp->connector); "

Thanks,
- Yakir
> Best regards,
> Krzysztof
>
>
>

Krzysztof Kozlowski Sept. 7, 2015, 12:22 a.m. UTC | #11

On 06.09.2015 16:49, Yakir Yang wrote:
> Hi Krzysztof,
> 
> ? 09/04/2015 08:41 AM, Krzysztof Kozlowski ??:
>> On 03.09.2015 14:30, Yakir Yang wrote:
>>> Hi Krzysztof,
>>>
>>> ? 09/03/2015 08:58 AM, Krzysztof Kozlowski ??:
>>>> On 01.09.2015 14:49, Yakir Yang wrote:
>>>>> Split the dp core driver from exynos directory to bridge
>>>>> directory, and rename the core driver to analogix_dp_*,
>>>>> leave the platform code to analogix_dp-exynos.
>>>>>
>>>>> Signed-off-by: Yakir Yang <[e-mail]>
>>>>> ---
>>>>> Changes in v4:
>>>>> - Take Rob suggest, update "analogix,hpd-gpios" to "hpd-gpios" DT
>>>>> propery.
>>>>> - Take Jingoo suggest, rename "analogix_dp-exynos.c" file name to
>>>>> "exynos_dp.c"
>>>>> - Take Archit suggest, create a separate folder for analogix code in
>>>>> bridge/
>>>>>
>>>>> Changes in v3:
>>>>> - Take Thierry Reding suggest, move exynos's video_timing code
>>>>>     to analogix_dp-exynos platform driver, add get_modes method
>>>>>     to struct analogix_dp_plat_data.
>>>>> - Take Heiko suggest, rename some "samsung*" dts propery to
>>>>> "analogix*".
>>>>>
>>>>> Changes in v2:
>>>>> - Take Jingoo Han suggest, remove new copyright
>>>>> - Fix compiled failed dut to analogix_dp_device misspell
> 
> [.....]
> 
>>>>> -static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
>>>>> +static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
>>>>>    {
>>>>> -    struct exynos_dp_device *dp = bridge->driver_private;
>>>>> -    struct drm_encoder *encoder = &dp->encoder;
>>>>> +    struct analogix_dp_device *dp = bridge->driver_private;
>>>>> +    struct drm_encoder *encoder = dp->encoder;
>>>>>        struct drm_connector *connector = &dp->connector;
>>>>>        int ret;
>>>>>    -    /* Pre-empt DP connector creation if there's a bridge */
>>>>> -    if (dp->ptn_bridge) {
>>>>> -        ret = exynos_drm_attach_lcd_bridge(dp, encoder);
>>>>> -        if (!ret)
>>>>> -            return 0;
>>>>> +    if (!bridge->encoder) {
>>>>> +        DRM_ERROR("Parent encoder object not found");
>>>>> +        return -ENODEV;
>>>>>        }
>>>>>    +    encoder->bridge = bridge;
>>>>> +
>>>>>        connector->polled = DRM_CONNECTOR_POLL_HPD;
>>>>>          ret = drm_connector_init(dp->drm_dev, connector,
>>>>> -                 &exynos_dp_connector_funcs,
>>>>> +                 &analogix_dp_connector_funcs,
>>>>>                     DRM_MODE_CONNECTOR_eDP);
>>>>>        if (ret) {
>>>>>            DRM_ERROR("Failed to initialize connector with drm\n");
>>>>>            return ret;
>>>>>        }
>>>>>    -    drm_connector_helper_add(connector,
>>>>> &exynos_dp_connector_helper_funcs);
>>>>> +    drm_connector_helper_add(connector,
>>>>> +                 &analogix_dp_connector_helper_funcs);
>>>>>        drm_connector_register(connector);
>>>>>        drm_mode_connector_attach_encoder(connector, encoder);
>>>>>    -    if (dp->panel)
>>>>> -        ret = drm_panel_attach(dp->panel, &dp->connector);
>>>>> +    if (dp->plat_data && dp->plat_data->panel) {
>>>>> +        ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
>>>>> +        if (ret) {
>>>>> +            DRM_ERROR("Failed to attach panel\n");
>>>>> +            return ret;
>>>>> +        }
>>>>> +    }
>>>>> +
>>>>> +    /*
>>>>> +     * This should be the end of attach function, caused
>>>>> +     * we should ensure dp bridge could attach first.
>>>>> +     */
>>>>> +     if (dp->plat_data && dp->plat_data->attach) {
>>>>> +         ret = dp->plat_data->attach(dp->plat_data, bridge);
>>>>> +         if (ret) {
>>>>> +             DRM_ERROR("Failed at platform attch func\n");
>>>> Two new error paths appeared here and above. Don't you have to
>>>> cleanup something? I don't know, just wondering...
>>> Hmm... I think both panel & platform_attch need ERROR remind when
>>> it failed. But if it still need clean, I though it should clean the
>>> platform attch
>>> error,
>>> this is not relate to DRM directly, just analogix driver logic, so
>>> code would like,
>>>
>>> -    if (dp->panel)
>>> -        ret = drm_panel_attach(dp->panel, &dp->connector);
>>> +    if (dp->plat_data && dp->plat_data->panel) {
>>> +        ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
>>> +        if (ret) {
>>> +            DRM_ERROR("Failed to attach panel\n");
>>> +            return ret;
>>> +        }
>>> +    }
>>>
>>> +    /*
>>> +     * This should be the end of attach function, caused
>>> +     * we should ensure dp bridge could attach first.
>>> +     */
>>> +     if (dp->plat_data && dp->plat_data->attach) {
>>> +         ret = dp->plat_data->attach(dp->plat_data, bridge);
>>>
>>>            return ret;
>> I am lost... the code looks the same. What did you change?
> 
> I just remove the DRM_ERROR after dp->plat_data->attach(),
> maybe I should paste the change that rebase on this patch,
> here are they,
> 
>     /*
>      * This should be the end of attach function, caused
>      * we should ensure dp bridge could attach first.
>      */
> -     if (dp->plat_data && dp->plat_data->attach) {
> +     if (dp->plat_data && dp->plat_data->attach)
>            ret = dp->plat_data->attach(dp->plat_data, bridge);
> -          if (ret) {
> -              DRM_ERROR("Failed at platform attch func\n");
> -              return ret;
> -          }
> -      }
> 
> -    return 0;
> +   return ret;
> 
> 
> If this haven't meet your comment, I maybe start to think that
> your comment  "Two new error paths appeared here and above"
> indicated that those two function is the same.
>     "dp->plat_data->attach(dp->plat_data, bridge); "
>     "drm_panel_attach(dp->plat_data->panel, &dp->connector); "

I wasn't talking about error message but rather about possible need of
clean up in error path. Previously there was only drm_panel_attach().
Now you have two of them (drm_panel_attach() and
dp->plat_data->attach()). If the second fails don't you have to clean up
before exit? I don't know, just asking.

Best regards,
Krzysztof

Thierry Reding Sept. 7, 2015, 8:11 a.m. UTC | #12

On Fri, Sep 04, 2015 at 11:29:30PM +0200, Heiko Stuebner wrote:
> Am Freitag, 4. September 2015, 16:06:02 schrieb Rob Herring:
> > On Tue, Sep 1, 2015 at 3:46 PM, Heiko Stuebner <[e-mail]> wrote:
> > > Am Dienstag, 1. September 2015, 13:49:58 schrieb Yakir Yang:
> > >> Split the dp core driver from exynos directory to bridge
> > >> directory, and rename the core driver to analogix_dp_*,
> > >> leave the platform code to analogix_dp-exynos.
> > >> 
> > >> Signed-off-by: Yakir Yang <[e-mail]>
> > > 
> > > [...]
> > > 
> > >> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c
> > >> b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c similarity index 50%
> > >> rename from drivers/gpu/drm/exynos/exynos_dp_core.c
> > >> rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> > >> index bed0252..7d62f22 100644
> > >> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> > >> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> > > 
> > > [...]
> > > 
> > >>       connector->polled = DRM_CONNECTOR_POLL_HPD;
> > >>       
> > >>       ret = drm_connector_init(dp->drm_dev, connector,
> > >> 
> > >> -                              &exynos_dp_connector_funcs,
> > >> +                              &analogix_dp_connector_funcs,
> > >> 
> > >>                                DRM_MODE_CONNECTOR_eDP);
> > >>       
> > >>       if (ret) {
> > >>       
> > >>               DRM_ERROR("Failed to initialize connector with drm\n");
> > >>               return ret;
> > >>       
> > >>       }
> > >> 
> > >> -     drm_connector_helper_add(connector,
> > >> &exynos_dp_connector_helper_funcs); +    
> > >> drm_connector_helper_add(connector,
> > >> +                              &analogix_dp_connector_helper_funcs);
> > >> 
> > >>       drm_connector_register(connector);
> > > 
> > > this should only run on exynos, as we're doing all our connector
> > > registration in the core driver after all components are bound, so I
> > > guess something like> 
> > > the following is needed:
> > >        if (dp->plat_data && dp->plat_data->dev_type == EXYNOS_DP)
> > >        
> > >                drm_connector_register(connector);
> > 
> > Yuck!
> > 
> > Surely there is a better way. From what I've seen of DRM, I have no
> > doubt this is needed, but really a better solution is needed. Surely
> > there can be a more generic way for the driver to determine if it
> > should handle the connector or not. This seems like a common problem
> > including one I have seen. What I'm working on has onchip DSI encoder
> > -> ADV7533 -> HDMI. The DSI encoder can also have a direct attached
> > panel. So I have to check for a bridge in the encoder driver and only
> > register the connector for the panel if a bridge is not attached.
> 
> I'm also only a part-time drm meddler, so things may be inaccurate.
> 
> This conditional is not meant to prevent the registration of the dp connector, 
> only delay it for non-exynos drms. The connector registration does publish it 
> to userspace, so like i.MX we're doing that for all connectors at the same 
> time after all components are bound - to also make x11 happy. Exynos on the 
> other hand seems to register its connectors individually and I'm not sure if 
> they would be willing to change that.
> 
> see d3007dabeff4 ("drm/rockchip: register all connectors after bind") or 
> simply rockchip_drm_drv.c line 178.
> 
> and e355e7dd607b ("imx-drm: delay publishing sysfs connector entries")

There really shouldn't be a reason for both drivers to behave
differently in this case. Gustavo has done a lot of work on cleaning up
the Exynos driver lately, so perhaps you should sync up with him to see
if this is something that he can integrate with his changes.

If you can't reach an agreement and Exynos must keep the exact behaviour
as it has now, then perhaps a better option would be to have the
Analogix core driver not register the connector but rather leave that up
to users of the helpers. Then you don't have to clutter the core driver
with this type of platform-specific data.

Thierry

Patch

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index 2de52a5..7b5b77a 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -29,4 +29,6 @@  config DRM_PARADE_PS8622
 	---help---
 	  Parade eDP-LVDS bridge chip driver.
 
+source "drivers/gpu/drm/bridge/analogix/Kconfig"
+
 endmenu
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index e2eef1c..5366c6b 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -3,3 +3,4 @@  ccflags-y := -Iinclude/drm
 obj-$(CONFIG_DRM_DW_HDMI) += dw_hdmi.o
 obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
 obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix/
diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig
new file mode 100644
index 0000000..5ff6551
--- /dev/null
+++ b/drivers/gpu/drm/bridge/analogix/Kconfig
@@ -0,0 +1,4 @@ 
+config DRM_ANALOGIX_DP
+	tristate
+	depends on DRM
+	select DRM_KMS_HELPER
diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile
new file mode 100644
index 0000000..9107b86
--- /dev/null
+++ b/drivers/gpu/drm/bridge/analogix/Makefile
@@ -0,0 +1 @@ 
+obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp_core.o analogix_dp_reg.o
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
similarity index 50%
rename from drivers/gpu/drm/exynos/exynos_dp_core.c
rename to drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index bed0252..7d62f22 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1,14 +1,14 @@ 
 /*
- * Samsung SoC DP (Display Port) interface driver.
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
+* Analogix DP (Display Port) core interface driver.
+*
+* Copyright (C) 2012 Samsung Electronics Co., Ltd.
+* Author: Jingoo Han <[e-mail]>
+*
+* This program is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License as published by the
+* Free Software Foundation; either version 2 of the License, or (at your
+* option) any later version.
+*/
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -18,12 +18,9 @@ 
 #include <linux/interrupt.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
-#include <linux/of_graph.h>
 #include <linux/gpio.h>
 #include <linux/component.h>
 #include <linux/phy/phy.h>
-#include <video/of_display_timing.h>
-#include <video/of_videomode.h>
 
 #include <drm/drmP.h>
 #include <drm/drm_crtc.h>
@@ -31,52 +28,42 @@ 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_panel.h>
 
-#include "exynos_dp_core.h"
-#include "exynos_drm_crtc.h"
+#include <drm/bridge/analogix_dp.h>
 
-#define ctx_from_connector(c)	container_of(c, struct exynos_dp_device, \
-					connector)
+#include "analogix_dp_core.h"
 
-static inline struct exynos_drm_crtc *dp_to_crtc(struct exynos_dp_device *dp)
-{
-	return to_exynos_crtc(dp->encoder.crtc);
-}
-
-static inline struct exynos_dp_device *encoder_to_dp(
-						struct drm_encoder *e)
-{
-	return container_of(e, struct exynos_dp_device, encoder);
-}
+#define connector_to_dp(c) \
+	container_of(c, struct analogix_dp_device, connector)
 
 struct bridge_init {
 	struct i2c_client *client;
 	struct device_node *node;
 };
 
-static void exynos_dp_init_dp(struct exynos_dp_device *dp)
+static void analogix_dp_init_dp(struct analogix_dp_device *dp)
 {
-	exynos_dp_reset(dp);
+	analogix_dp_reset(dp);
 
-	exynos_dp_swreset(dp);
+	analogix_dp_swreset(dp);
 
-	exynos_dp_init_analog_param(dp);
-	exynos_dp_init_interrupt(dp);
+	analogix_dp_init_analog_param(dp);
+	analogix_dp_init_interrupt(dp);
 
 	/* SW defined function Normal operation */
-	exynos_dp_enable_sw_function(dp);
+	analogix_dp_enable_sw_function(dp);
 
-	exynos_dp_config_interrupt(dp);
-	exynos_dp_init_analog_func(dp);
+	analogix_dp_config_interrupt(dp);
+	analogix_dp_init_analog_func(dp);
 
-	exynos_dp_init_hpd(dp);
-	exynos_dp_init_aux(dp);
+	analogix_dp_init_hpd(dp);
+	analogix_dp_init_aux(dp);
 }
 
-static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
+static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
 {
 	int timeout_loop = 0;
 
-	while (exynos_dp_get_plug_in_status(dp) != 0) {
+	while (analogix_dp_get_plug_in_status(dp) != 0) {
 		timeout_loop++;
 		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
 			dev_err(dp->dev, "failed to get hpd plug status\n");
@@ -88,7 +75,7 @@  static int exynos_dp_detect_hpd(struct exynos_dp_device *dp)
 	return 0;
 }
 
-static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
+static unsigned char analogix_dp_calc_edid_check_sum(unsigned char *edid_data)
 {
 	int i;
 	unsigned char sum = 0;
@@ -99,7 +86,7 @@  static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
 	return sum;
 }
 
-static int exynos_dp_read_edid(struct exynos_dp_device *dp)
+static int analogix_dp_read_edid(struct analogix_dp_device *dp)
 {
 	unsigned char edid[EDID_BLOCK_LENGTH * 2];
 	unsigned int extend_block = 0;
@@ -114,9 +101,9 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 	 */
 
 	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
-	retval = exynos_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
-					      EDID_EXTENSION_FLAG,
-					      &extend_block);
+	retval = analogix_dp_read_byte_from_i2c(dp, I2C_EDID_DEVICE_ADDR,
+						EDID_EXTENSION_FLAG,
+						&extend_block);
 	if (retval)
 		return retval;
 
@@ -124,7 +111,7 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 		dev_dbg(dp->dev, "EDID data includes a single extension!\n");
 
 		/* Read EDID data */
-		retval = exynos_dp_read_bytes_from_i2c(
+		retval = analogix_dp_read_bytes_from_i2c(
 					dp, I2C_EDID_DEVICE_ADDR,
 					EDID_HEADER_PATTERN,
 					EDID_BLOCK_LENGTH,
@@ -133,14 +120,14 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 			dev_err(dp->dev, "EDID Read failed!\n");
 			return -EIO;
 		}
-		sum = exynos_dp_calc_edid_check_sum(edid);
+		sum = analogix_dp_calc_edid_check_sum(edid);
 		if (sum != 0) {
 			dev_err(dp->dev, "EDID bad checksum!\n");
 			return -EIO;
 		}
 
 		/* Read additional EDID data */
-		retval = exynos_dp_read_bytes_from_i2c(
+		retval = analogix_dp_read_bytes_from_i2c(
 					dp, I2C_EDID_DEVICE_ADDR,
 					EDID_BLOCK_LENGTH,
 					EDID_BLOCK_LENGTH,
@@ -149,19 +136,19 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 			dev_err(dp->dev, "EDID Read failed!\n");
 			return -EIO;
 		}
-		sum = exynos_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]);
+		sum = analogix_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]);
 		if (sum != 0) {
 			dev_err(dp->dev, "EDID bad checksum!\n");
 			return -EIO;
 		}
 
-		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
-					      &test_vector);
+		analogix_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
+						&test_vector);
 		if (test_vector & DP_TEST_LINK_EDID_READ) {
-			exynos_dp_write_byte_to_dpcd(
+			analogix_dp_write_byte_to_dpcd(
 				dp, DP_TEST_EDID_CHECKSUM,
 				edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
-			exynos_dp_write_byte_to_dpcd(
+			analogix_dp_write_byte_to_dpcd(
 				dp, DP_TEST_RESPONSE,
 				DP_TEST_EDID_CHECKSUM_WRITE);
 		}
@@ -169,26 +156,26 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 		dev_info(dp->dev, "EDID data does not include any extensions.\n");
 
 		/* Read EDID data */
-		retval = exynos_dp_read_bytes_from_i2c(
+		retval = analogix_dp_read_bytes_from_i2c(
 				dp, I2C_EDID_DEVICE_ADDR, EDID_HEADER_PATTERN,
 				EDID_BLOCK_LENGTH, &edid[EDID_HEADER_PATTERN]);
 		if (retval != 0) {
 			dev_err(dp->dev, "EDID Read failed!\n");
 			return -EIO;
 		}
-		sum = exynos_dp_calc_edid_check_sum(edid);
+		sum = analogix_dp_calc_edid_check_sum(edid);
 		if (sum != 0) {
 			dev_err(dp->dev, "EDID bad checksum!\n");
 			return -EIO;
 		}
 
-		exynos_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
-					      &test_vector);
+		analogix_dp_read_byte_from_dpcd(dp, DP_TEST_REQUEST,
+						&test_vector);
 		if (test_vector & DP_TEST_LINK_EDID_READ) {
-			exynos_dp_write_byte_to_dpcd(
+			analogix_dp_write_byte_to_dpcd(
 					dp, DP_TEST_EDID_CHECKSUM,
 					edid[EDID_CHECKSUM]);
-			exynos_dp_write_byte_to_dpcd(
+			analogix_dp_write_byte_to_dpcd(
 					dp, DP_TEST_RESPONSE,
 					DP_TEST_EDID_CHECKSUM_WRITE);
 		}
@@ -198,20 +185,20 @@  static int exynos_dp_read_edid(struct exynos_dp_device *dp)
 	return 0;
 }
 
-static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
+static int analogix_dp_handle_edid(struct analogix_dp_device *dp)
 {
 	u8 buf[12];
 	int i;
 	int retval;
 
 	/* Read DPCD DP_DPCD_REV~RECEIVE_PORT1_CAP_1 */
-	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf);
+	retval = analogix_dp_read_bytes_from_dpcd(dp, DP_DPCD_REV, 12, buf);
 	if (retval)
 		return retval;
 
 	/* Read EDID */
 	for (i = 0; i < 3; i++) {
-		retval = exynos_dp_read_edid(dp);
+		retval = analogix_dp_read_edid(dp);
 		if (!retval)
 			break;
 	}
@@ -219,72 +206,74 @@  static int exynos_dp_handle_edid(struct exynos_dp_device *dp)
 	return retval;
 }
 
-static void exynos_dp_enable_rx_to_enhanced_mode(struct exynos_dp_device *dp,
-						 bool enable)
+static void
+analogix_dp_enable_rx_to_enhanced_mode(struct analogix_dp_device *dp,
+				       bool enable)
 {
 	u8 data;
 
-	exynos_dp_read_byte_from_dpcd(dp, DP_LANE_COUNT_SET, &data);
+	analogix_dp_read_byte_from_dpcd(dp, DP_LANE_COUNT_SET, &data);
 
 	if (enable)
-		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
-					     DP_LANE_COUNT_ENHANCED_FRAME_EN |
-					     DPCD_LANE_COUNT_SET(data));
+		analogix_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
+					       DP_LANE_COUNT_ENHANCED_FRAME_EN |
+					       DPCD_LANE_COUNT_SET(data));
 	else
-		exynos_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
-					     DPCD_LANE_COUNT_SET(data));
+		analogix_dp_write_byte_to_dpcd(dp, DP_LANE_COUNT_SET,
+					       DPCD_LANE_COUNT_SET(data));
 }
 
-static int exynos_dp_is_enhanced_mode_available(struct exynos_dp_device *dp)
+static int analogix_dp_is_enhanced_mode_available(struct analogix_dp_device *dp)
 {
 	u8 data;
 	int retval;
 
-	exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
+	analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
 	retval = DPCD_ENHANCED_FRAME_CAP(data);
 
 	return retval;
 }
 
-static void exynos_dp_set_enhanced_mode(struct exynos_dp_device *dp)
+static void analogix_dp_set_enhanced_mode(struct analogix_dp_device *dp)
 {
 	u8 data;
 
-	data = exynos_dp_is_enhanced_mode_available(dp);
-	exynos_dp_enable_rx_to_enhanced_mode(dp, data);
-	exynos_dp_enable_enhanced_mode(dp, data);
+	data = analogix_dp_is_enhanced_mode_available(dp);
+	analogix_dp_enable_rx_to_enhanced_mode(dp, data);
+	analogix_dp_enable_enhanced_mode(dp, data);
 }
 
-static void exynos_dp_training_pattern_dis(struct exynos_dp_device *dp)
+static void analogix_dp_training_pattern_dis(struct analogix_dp_device *dp)
 {
-	exynos_dp_set_training_pattern(dp, DP_NONE);
+	analogix_dp_set_training_pattern(dp, DP_NONE);
 
-	exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
-				     DP_TRAINING_PATTERN_DISABLE);
+	analogix_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
+				       DP_TRAINING_PATTERN_DISABLE);
 }
 
-static void exynos_dp_set_lane_lane_pre_emphasis(struct exynos_dp_device *dp,
-						 int pre_emphasis, int lane)
+static void
+analogix_dp_set_lane_lane_pre_emphasis(struct analogix_dp_device *dp,
+				       int pre_emphasis, int lane)
 {
 	switch (lane) {
 	case 0:
-		exynos_dp_set_lane0_pre_emphasis(dp, pre_emphasis);
+		analogix_dp_set_lane0_pre_emphasis(dp, pre_emphasis);
 		break;
 	case 1:
-		exynos_dp_set_lane1_pre_emphasis(dp, pre_emphasis);
+		analogix_dp_set_lane1_pre_emphasis(dp, pre_emphasis);
 		break;
 
 	case 2:
-		exynos_dp_set_lane2_pre_emphasis(dp, pre_emphasis);
+		analogix_dp_set_lane2_pre_emphasis(dp, pre_emphasis);
 		break;
 
 	case 3:
-		exynos_dp_set_lane3_pre_emphasis(dp, pre_emphasis);
+		analogix_dp_set_lane3_pre_emphasis(dp, pre_emphasis);
 		break;
 	}
 }
 
-static int exynos_dp_link_start(struct exynos_dp_device *dp)
+static int analogix_dp_link_start(struct analogix_dp_device *dp)
 {
 	u8 buf[4];
 	int lane, lane_count, pll_tries, retval;
@@ -298,24 +287,24 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 		dp->link_train.cr_loop[lane] = 0;
 
 	/* Set link rate and count as you want to establish*/
-	exynos_dp_set_link_bandwidth(dp, dp->link_train.link_rate);
-	exynos_dp_set_lane_count(dp, dp->link_train.lane_count);
+	analogix_dp_set_link_bandwidth(dp, dp->link_train.link_rate);
+	analogix_dp_set_lane_count(dp, dp->link_train.lane_count);
 
 	/* Setup RX configuration */
 	buf[0] = dp->link_train.link_rate;
 	buf[1] = dp->link_train.lane_count;
-	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf);
+	retval = analogix_dp_write_bytes_to_dpcd(dp, DP_LINK_BW_SET, 2, buf);
 	if (retval)
 		return retval;
 
 	/* Set TX pre-emphasis to minimum */
 	for (lane = 0; lane < lane_count; lane++)
-		exynos_dp_set_lane_lane_pre_emphasis(dp, PRE_EMPHASIS_LEVEL_0,
-						     lane);
+		analogix_dp_set_lane_lane_pre_emphasis(dp, PRE_EMPHASIS_LEVEL_0,
+						       lane);
 
 	/* Wait for PLL lock */
 	pll_tries = 0;
-	while (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+	while (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
 		if (pll_tries == DP_TIMEOUT_LOOP_COUNT) {
 			dev_err(dp->dev, "Wait for PLL lock timed out\n");
 			return -ETIMEDOUT;
@@ -326,12 +315,12 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 	}
 
 	/* Set training pattern 1 */
-	exynos_dp_set_training_pattern(dp, TRAINING_PTN1);
+	analogix_dp_set_training_pattern(dp, TRAINING_PTN1);
 
 	/* Set RX training pattern */
-	retval = exynos_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
-					      DP_LINK_SCRAMBLING_DISABLE |
-					      DP_TRAINING_PATTERN_1);
+	retval = analogix_dp_write_byte_to_dpcd(dp, DP_TRAINING_PATTERN_SET,
+						DP_LINK_SCRAMBLING_DISABLE |
+						DP_TRAINING_PATTERN_1);
 	if (retval)
 		return retval;
 
@@ -339,13 +328,13 @@  static int exynos_dp_link_start(struct exynos_dp_device *dp)
 		buf[lane] = DP_TRAIN_PRE_EMPH_LEVEL_0 |
 			    DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
 
-	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
-					       lane_count, buf);
+	retval = analogix_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
+						 lane_count, buf);
 
 	return retval;
 }
 
-static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane)
+static unsigned char analogix_dp_get_lane_status(u8 link_status[2], int lane)
 {
 	int shift = (lane & 1) * 4;
 	u8 link_value = link_status[lane >> 1];
@@ -353,21 +342,21 @@  static unsigned char exynos_dp_get_lane_status(u8 link_status[2], int lane)
 	return (link_value >> shift) & 0xf;
 }
 
-static int exynos_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
+static int analogix_dp_clock_recovery_ok(u8 link_status[2], int lane_count)
 {
 	int lane;
 	u8 lane_status;
 
 	for (lane = 0; lane < lane_count; lane++) {
-		lane_status = exynos_dp_get_lane_status(link_status, lane);
+		lane_status = analogix_dp_get_lane_status(link_status, lane);
 		if ((lane_status & DP_LANE_CR_DONE) == 0)
 			return -EINVAL;
 	}
 	return 0;
 }
 
-static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
-				   int lane_count)
+static int analogix_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
+				     int lane_count)
 {
 	int lane;
 	u8 lane_status;
@@ -376,7 +365,7 @@  static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
 		return -EINVAL;
 
 	for (lane = 0; lane < lane_count; lane++) {
-		lane_status = exynos_dp_get_lane_status(link_status, lane);
+		lane_status = analogix_dp_get_lane_status(link_status, lane);
 		lane_status &= DP_CHANNEL_EQ_BITS;
 		if (lane_status != DP_CHANNEL_EQ_BITS)
 			return -EINVAL;
@@ -385,8 +374,8 @@  static int exynos_dp_channel_eq_ok(u8 link_status[2], u8 link_align,
 	return 0;
 }
 
-static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2],
-							  int lane)
+static unsigned char
+analogix_dp_get_adjust_request_voltage(u8 adjust_request[2], int lane)
 {
 	int shift = (lane & 1) * 4;
 	u8 link_value = adjust_request[lane >> 1];
@@ -394,7 +383,7 @@  static unsigned char exynos_dp_get_adjust_request_voltage(u8 adjust_request[2],
 	return (link_value >> shift) & 0x3;
 }
 
-static unsigned char exynos_dp_get_adjust_request_pre_emphasis(
+static unsigned char analogix_dp_get_adjust_request_pre_emphasis(
 					u8 adjust_request[2],
 					int lane)
 {
@@ -404,44 +393,44 @@  static unsigned char exynos_dp_get_adjust_request_pre_emphasis(
 	return ((link_value >> shift) & 0xc) >> 2;
 }
 
-static void exynos_dp_set_lane_link_training(struct exynos_dp_device *dp,
-					     u8 training_lane_set, int lane)
+static void analogix_dp_set_lane_link_training(struct analogix_dp_device *dp,
+					       u8 training_lane_set, int lane)
 {
 	switch (lane) {
 	case 0:
-		exynos_dp_set_lane0_link_training(dp, training_lane_set);
+		analogix_dp_set_lane0_link_training(dp, training_lane_set);
 		break;
 	case 1:
-		exynos_dp_set_lane1_link_training(dp, training_lane_set);
+		analogix_dp_set_lane1_link_training(dp, training_lane_set);
 		break;
 
 	case 2:
-		exynos_dp_set_lane2_link_training(dp, training_lane_set);
+		analogix_dp_set_lane2_link_training(dp, training_lane_set);
 		break;
 
 	case 3:
-		exynos_dp_set_lane3_link_training(dp, training_lane_set);
+		analogix_dp_set_lane3_link_training(dp, training_lane_set);
 		break;
 	}
 }
 
 static unsigned int
-exynos_dp_get_lane_link_training(struct exynos_dp_device *dp, int lane)
+analogix_dp_get_lane_link_training(struct analogix_dp_device *dp, int lane)
 {
 	u32 reg;
 
 	switch (lane) {
 	case 0:
-		reg = exynos_dp_get_lane0_link_training(dp);
+		reg = analogix_dp_get_lane0_link_training(dp);
 		break;
 	case 1:
-		reg = exynos_dp_get_lane1_link_training(dp);
+		reg = analogix_dp_get_lane1_link_training(dp);
 		break;
 	case 2:
-		reg = exynos_dp_get_lane2_link_training(dp);
+		reg = analogix_dp_get_lane2_link_training(dp);
 		break;
 	case 3:
-		reg = exynos_dp_get_lane3_link_training(dp);
+		reg = analogix_dp_get_lane3_link_training(dp);
 		break;
 	default:
 		WARN_ON(1);
@@ -451,25 +440,25 @@  exynos_dp_get_lane_link_training(struct exynos_dp_device *dp, int lane)
 	return reg;
 }
 
-static void exynos_dp_reduce_link_rate(struct exynos_dp_device *dp)
+static void analogix_dp_reduce_link_rate(struct analogix_dp_device *dp)
 {
-	exynos_dp_training_pattern_dis(dp);
-	exynos_dp_set_enhanced_mode(dp);
+	analogix_dp_training_pattern_dis(dp);
+	analogix_dp_set_enhanced_mode(dp);
 
 	dp->link_train.lt_state = FAILED;
 }
 
-static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp,
-					       u8 adjust_request[2])
+static void analogix_dp_get_adjust_training_lane(struct analogix_dp_device *dp,
+						 u8 adjust_request[2])
 {
 	int lane, lane_count;
 	u8 voltage_swing, pre_emphasis, training_lane;
 
 	lane_count = dp->link_train.lane_count;
 	for (lane = 0; lane < lane_count; lane++) {
-		voltage_swing = exynos_dp_get_adjust_request_voltage(
+		voltage_swing = analogix_dp_get_adjust_request_voltage(
 						adjust_request, lane);
-		pre_emphasis = exynos_dp_get_adjust_request_pre_emphasis(
+		pre_emphasis = analogix_dp_get_adjust_request_pre_emphasis(
 						adjust_request, lane);
 		training_lane = DPCD_VOLTAGE_SWING_SET(voltage_swing) |
 				DPCD_PRE_EMPHASIS_SET(pre_emphasis);
@@ -483,7 +472,7 @@  static void exynos_dp_get_adjust_training_lane(struct exynos_dp_device *dp,
 	}
 }
 
-static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
+static int analogix_dp_process_clock_recovery(struct analogix_dp_device *dp)
 {
 	int lane, lane_count, retval;
 	u8 voltage_swing, pre_emphasis, training_lane;
@@ -493,21 +482,22 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 
 	lane_count = dp->link_train.lane_count;
 
-	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
-						 2, link_status);
+	retval =  analogix_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
+						   2, link_status);
 	if (retval)
 		return retval;
 
-	retval =  exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
-						 2, adjust_request);
+	retval =  analogix_dp_read_bytes_from_dpcd(
+					dp, DP_ADJUST_REQUEST_LANE0_1,
+					2, adjust_request);
 	if (retval)
 		return retval;
 
-	if (exynos_dp_clock_recovery_ok(link_status, lane_count) == 0) {
+	if (analogix_dp_clock_recovery_ok(link_status, lane_count) == 0) {
 		/* set training pattern 2 for EQ */
-		exynos_dp_set_training_pattern(dp, TRAINING_PTN2);
+		analogix_dp_set_training_pattern(dp, TRAINING_PTN2);
 
-		retval = exynos_dp_write_byte_to_dpcd(
+		retval = analogix_dp_write_byte_to_dpcd(
 				dp, DP_TRAINING_PATTERN_SET,
 				DP_LINK_SCRAMBLING_DISABLE |
 				DP_TRAINING_PATTERN_2);
@@ -518,11 +508,11 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 		dp->link_train.lt_state = EQUALIZER_TRAINING;
 	} else {
 		for (lane = 0; lane < lane_count; lane++) {
-			training_lane = exynos_dp_get_lane_link_training(
+			training_lane = analogix_dp_get_lane_link_training(
 							dp, lane);
-			voltage_swing = exynos_dp_get_adjust_request_voltage(
+			voltage_swing = analogix_dp_get_adjust_request_voltage(
 							adjust_request, lane);
-			pre_emphasis = exynos_dp_get_adjust_request_pre_emphasis(
+			pre_emphasis = analogix_dp_get_adjust_request_pre_emphasis(
 							adjust_request, lane);
 
 			if (DPCD_VOLTAGE_SWING_GET(training_lane) ==
@@ -537,19 +527,19 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 				dev_err(dp->dev, "CR Max reached (%d,%d,%d)\n",
 					dp->link_train.cr_loop[lane],
 					voltage_swing, pre_emphasis);
-				exynos_dp_reduce_link_rate(dp);
+				analogix_dp_reduce_link_rate(dp);
 				return -EIO;
 			}
 		}
 	}
 
-	exynos_dp_get_adjust_training_lane(dp, adjust_request);
+	analogix_dp_get_adjust_training_lane(dp, adjust_request);
 
 	for (lane = 0; lane < lane_count; lane++)
-		exynos_dp_set_lane_link_training(
+		analogix_dp_set_lane_link_training(
 				dp, dp->link_train.training_lane[lane], lane);
 
-	retval = exynos_dp_write_bytes_to_dpcd(
+	retval = analogix_dp_write_bytes_to_dpcd(
 			dp, DP_TRAINING_LANE0_SET, lane_count,
 			dp->link_train.training_lane);
 	if (retval)
@@ -558,7 +548,7 @@  static int exynos_dp_process_clock_recovery(struct exynos_dp_device *dp)
 	return retval;
 }
 
-static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
+static int analogix_dp_process_equalizer_training(struct analogix_dp_device *dp)
 {
 	int lane, lane_count, retval;
 	u32 reg;
@@ -568,46 +558,46 @@  static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
 
 	lane_count = dp->link_train.lane_count;
 
-	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
-						2, link_status);
+	retval = analogix_dp_read_bytes_from_dpcd(dp, DP_LANE0_1_STATUS,
+						  2, link_status);
 	if (retval)
 		return retval;
 
-	if (exynos_dp_clock_recovery_ok(link_status, lane_count)) {
-		exynos_dp_reduce_link_rate(dp);
+	if (analogix_dp_clock_recovery_ok(link_status, lane_count)) {
+		analogix_dp_reduce_link_rate(dp);
 		return -EIO;
 	}
 
-	retval = exynos_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
-						2, adjust_request);
+	retval = analogix_dp_read_bytes_from_dpcd(dp, DP_ADJUST_REQUEST_LANE0_1,
+						  2, adjust_request);
 	if (retval)
 		return retval;
 
-	retval = exynos_dp_read_byte_from_dpcd(dp, DP_LANE_ALIGN_STATUS_UPDATED,
-					       &link_align);
+	retval = analogix_dp_read_byte_from_dpcd(
+			dp, DP_LANE_ALIGN_STATUS_UPDATED, &link_align);
 	if (retval)
 		return retval;
 
-	exynos_dp_get_adjust_training_lane(dp, adjust_request);
+	analogix_dp_get_adjust_training_lane(dp, adjust_request);
 
-	if (!exynos_dp_channel_eq_ok(link_status, link_align, lane_count)) {
+	if (!analogix_dp_channel_eq_ok(link_status, link_align, lane_count)) {
 		/* traing pattern Set to Normal */
-		exynos_dp_training_pattern_dis(dp);
+		analogix_dp_training_pattern_dis(dp);
 
 		dev_info(dp->dev, "Link Training success!\n");
 
-		exynos_dp_get_link_bandwidth(dp, &reg);
+		analogix_dp_get_link_bandwidth(dp, &reg);
 		dp->link_train.link_rate = reg;
 		dev_dbg(dp->dev, "final bandwidth = %.2x\n",
 			dp->link_train.link_rate);
 
-		exynos_dp_get_lane_count(dp, &reg);
+		analogix_dp_get_lane_count(dp, &reg);
 		dp->link_train.lane_count = reg;
 		dev_dbg(dp->dev, "final lane count = %.2x\n",
 			dp->link_train.lane_count);
 
 		/* set enhanced mode if available */
-		exynos_dp_set_enhanced_mode(dp);
+		analogix_dp_set_enhanced_mode(dp);
 		dp->link_train.lt_state = FINISHED;
 
 		return 0;
@@ -618,23 +608,23 @@  static int exynos_dp_process_equalizer_training(struct exynos_dp_device *dp)
 
 	if (dp->link_train.eq_loop > MAX_EQ_LOOP) {
 		dev_err(dp->dev, "EQ Max loop\n");
-		exynos_dp_reduce_link_rate(dp);
+		analogix_dp_reduce_link_rate(dp);
 		return -EIO;
 	}
 
 	for (lane = 0; lane < lane_count; lane++)
-		exynos_dp_set_lane_link_training(
+		analogix_dp_set_lane_link_training(
 				dp, dp->link_train.training_lane[lane], lane);
 
-	retval = exynos_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
-					       lane_count,
-					       dp->link_train.training_lane);
+	retval = analogix_dp_write_bytes_to_dpcd(dp, DP_TRAINING_LANE0_SET,
+						 lane_count,
+						 dp->link_train.training_lane);
 
 	return retval;
 }
 
-static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
-					   u8 *bandwidth)
+static void analogix_dp_get_max_rx_bandwidth(struct analogix_dp_device *dp,
+					     u8 *bandwidth)
 {
 	u8 data;
 
@@ -642,12 +632,12 @@  static void exynos_dp_get_max_rx_bandwidth(struct exynos_dp_device *dp,
 	 * For DP rev.1.1, Maximum link rate of Main Link lanes
 	 * 0x06 = 1.62 Gbps, 0x0a = 2.7 Gbps
 	 */
-	exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LINK_RATE, &data);
+	analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LINK_RATE, &data);
 	*bandwidth = data;
 }
 
-static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
-					    u8 *lane_count)
+static void analogix_dp_get_max_rx_lane_count(struct analogix_dp_device *dp,
+					      u8 *lane_count)
 {
 	u8 data;
 
@@ -655,23 +645,23 @@  static void exynos_dp_get_max_rx_lane_count(struct exynos_dp_device *dp,
 	 * For DP rev.1.1, Maximum number of Main Link lanes
 	 * 0x01 = 1 lane, 0x02 = 2 lanes, 0x04 = 4 lanes
 	 */
-	exynos_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
+	analogix_dp_read_byte_from_dpcd(dp, DP_MAX_LANE_COUNT, &data);
 	*lane_count = DPCD_MAX_LANE_COUNT(data);
 }
 
-static void exynos_dp_init_training(struct exynos_dp_device *dp,
-				    enum link_lane_count_type max_lane,
-				    enum link_rate_type max_rate)
+static void analogix_dp_init_training(struct analogix_dp_device *dp,
+				      enum link_lane_count_type max_lane,
+				      enum link_rate_type max_rate)
 {
 	/*
 	 * MACRO_RST must be applied after the PLL_LOCK to avoid
 	 * the DP inter pair skew issue for at least 10 us
 	 */
-	exynos_dp_reset_macro(dp);
+	analogix_dp_reset_macro(dp);
 
 	/* Initialize by reading RX's DPCD */
-	exynos_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate);
-	exynos_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
+	analogix_dp_get_max_rx_bandwidth(dp, &dp->link_train.link_rate);
+	analogix_dp_get_max_rx_lane_count(dp, &dp->link_train.lane_count);
 
 	if ((dp->link_train.link_rate != LINK_RATE_1_62GBPS) &&
 	    (dp->link_train.link_rate != LINK_RATE_2_70GBPS)) {
@@ -693,10 +683,10 @@  static void exynos_dp_init_training(struct exynos_dp_device *dp,
 		dp->link_train.link_rate = max_rate;
 
 	/* All DP analog module power up */
-	exynos_dp_set_analog_power_down(dp, POWER_ALL, 0);
+	analogix_dp_set_analog_power_down(dp, POWER_ALL, 0);
 }
 
-static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
+static int analogix_dp_sw_link_training(struct analogix_dp_device *dp)
 {
 	int retval = 0, training_finished = 0;
 
@@ -706,17 +696,17 @@  static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
 	while (!retval && !training_finished) {
 		switch (dp->link_train.lt_state) {
 		case START:
-			retval = exynos_dp_link_start(dp);
+			retval = analogix_dp_link_start(dp);
 			if (retval)
 				dev_err(dp->dev, "LT link start failed!\n");
 			break;
 		case CLOCK_RECOVERY:
-			retval = exynos_dp_process_clock_recovery(dp);
+			retval = analogix_dp_process_clock_recovery(dp);
 			if (retval)
 				dev_err(dp->dev, "LT CR failed!\n");
 			break;
 		case EQUALIZER_TRAINING:
-			retval = exynos_dp_process_equalizer_training(dp);
+			retval = analogix_dp_process_equalizer_training(dp);
 			if (retval)
 				dev_err(dp->dev, "LT EQ failed!\n");
 			break;
@@ -733,15 +723,15 @@  static int exynos_dp_sw_link_training(struct exynos_dp_device *dp)
 	return retval;
 }
 
-static int exynos_dp_set_link_train(struct exynos_dp_device *dp,
-				    u32 count, u32 bwtype)
+static int analogix_dp_set_link_train(struct analogix_dp_device *dp,
+				      u32 count, u32 bwtype)
 {
 	int i;
 	int retval;
 
 	for (i = 0; i < DP_TIMEOUT_LOOP_COUNT; i++) {
-		exynos_dp_init_training(dp, count, bwtype);
-		retval = exynos_dp_sw_link_training(dp);
+		analogix_dp_init_training(dp, count, bwtype);
+		retval = analogix_dp_sw_link_training(dp);
 		if (retval == 0)
 			break;
 
@@ -751,24 +741,24 @@  static int exynos_dp_set_link_train(struct exynos_dp_device *dp,
 	return retval;
 }
 
-static int exynos_dp_config_video(struct exynos_dp_device *dp)
+static int analogix_dp_config_video(struct analogix_dp_device *dp)
 {
 	int retval = 0;
 	int timeout_loop = 0;
 	int done_count = 0;
 
-	exynos_dp_config_video_slave_mode(dp);
+	analogix_dp_config_video_slave_mode(dp);
 
-	exynos_dp_set_video_color_format(dp);
+	analogix_dp_set_video_color_format(dp);
 
-	if (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+	if (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
 		dev_err(dp->dev, "PLL is not locked yet.\n");
 		return -EINVAL;
 	}
 
 	for (;;) {
 		timeout_loop++;
-		if (exynos_dp_is_slave_video_stream_clock_on(dp) == 0)
+		if (analogix_dp_is_slave_video_stream_clock_on(dp) == 0)
 			break;
 		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
 			dev_err(dp->dev, "Timeout of video streamclk ok\n");
@@ -779,22 +769,22 @@  static int exynos_dp_config_video(struct exynos_dp_device *dp)
 	}
 
 	/* Set to use the register calculated M/N video */
-	exynos_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0);
+	analogix_dp_set_video_cr_mn(dp, CALCULATED_M, 0, 0);
 
 	/* For video bist, Video timing must be generated by register */
-	exynos_dp_set_video_timing_mode(dp, VIDEO_TIMING_FROM_CAPTURE);
+	analogix_dp_set_video_timing_mode(dp, VIDEO_TIMING_FROM_CAPTURE);
 
 	/* Disable video mute */
-	exynos_dp_enable_video_mute(dp, 0);
+	analogix_dp_enable_video_mute(dp, 0);
 
 	/* Configure video slave mode */
-	exynos_dp_enable_video_master(dp, 0);
+	analogix_dp_enable_video_master(dp, 0);
 
 	timeout_loop = 0;
 
 	for (;;) {
 		timeout_loop++;
-		if (exynos_dp_is_video_stream_on(dp) == 0) {
+		if (analogix_dp_is_video_stream_on(dp) == 0) {
 			done_count++;
 			if (done_count > 10)
 				break;
@@ -815,45 +805,46 @@  static int exynos_dp_config_video(struct exynos_dp_device *dp)
 	return retval;
 }
 
-static void exynos_dp_enable_scramble(struct exynos_dp_device *dp, bool enable)
+static void analogix_dp_enable_scramble(struct analogix_dp_device *dp,
+					bool enable)
 {
 	u8 data;
 
 	if (enable) {
-		exynos_dp_enable_scrambling(dp);
+		analogix_dp_enable_scrambling(dp);
 
-		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
-					      &data);
-		exynos_dp_write_byte_to_dpcd(
+		analogix_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
+						&data);
+		analogix_dp_write_byte_to_dpcd(
 				dp, DP_TRAINING_PATTERN_SET,
 				(u8)(data & ~DP_LINK_SCRAMBLING_DISABLE));
 	} else {
-		exynos_dp_disable_scrambling(dp);
+		analogix_dp_disable_scrambling(dp);
 
-		exynos_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
-					      &data);
-		exynos_dp_write_byte_to_dpcd(
+		analogix_dp_read_byte_from_dpcd(dp, DP_TRAINING_PATTERN_SET,
+						&data);
+		analogix_dp_write_byte_to_dpcd(
 				dp, DP_TRAINING_PATTERN_SET,
 				(u8)(data | DP_LINK_SCRAMBLING_DISABLE));
 	}
 }
 
-static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
+static irqreturn_t analogix_dp_irq_handler(int irq, void *arg)
 {
-	struct exynos_dp_device *dp = arg;
+	struct analogix_dp_device *dp = arg;
 
 	enum dp_irq_type irq_type;
 
-	irq_type = exynos_dp_get_irq_type(dp);
+	irq_type = analogix_dp_get_irq_type(dp);
 	switch (irq_type) {
 	case DP_IRQ_TYPE_HP_CABLE_IN:
 		dev_dbg(dp->dev, "Received irq - cable in\n");
 		schedule_work(&dp->hotplug_work);
-		exynos_dp_clear_hotplug_interrupts(dp);
+		analogix_dp_clear_hotplug_interrupts(dp);
 		break;
 	case DP_IRQ_TYPE_HP_CABLE_OUT:
 		dev_dbg(dp->dev, "Received irq - cable out\n");
-		exynos_dp_clear_hotplug_interrupts(dp);
+		analogix_dp_clear_hotplug_interrupts(dp);
 		break;
 	case DP_IRQ_TYPE_HP_CHANGE:
 		/*
@@ -862,7 +853,7 @@  static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
 		 * only handle cable changes.
 		 */
 		dev_dbg(dp->dev, "Received irq - hotplug change; ignoring.\n");
-		exynos_dp_clear_hotplug_interrupts(dp);
+		analogix_dp_clear_hotplug_interrupts(dp);
 		break;
 	default:
 		dev_err(dp->dev, "Received irq - unknown type!\n");
@@ -871,218 +862,204 @@  static irqreturn_t exynos_dp_irq_handler(int irq, void *arg)
 	return IRQ_HANDLED;
 }
 
-static void exynos_dp_hotplug(struct work_struct *work)
+static void analogix_dp_hotplug(struct work_struct *work)
 {
-	struct exynos_dp_device *dp;
+	struct analogix_dp_device *dp;
 
-	dp = container_of(work, struct exynos_dp_device, hotplug_work);
+	dp = container_of(work, struct analogix_dp_device, hotplug_work);
 
 	if (dp->drm_dev)
 		drm_helper_hpd_irq_event(dp->drm_dev);
 }
 
-static void exynos_dp_commit(struct drm_encoder *encoder)
+static void analogix_dp_commit(struct analogix_dp_device *dp)
 {
-	struct exynos_dp_device *dp = encoder_to_dp(encoder);
 	int ret;
 
 	/* Keep the panel disabled while we configure video */
-	if (dp->panel) {
-		if (drm_panel_disable(dp->panel))
+	if (dp->plat_data && dp->plat_data->panel) {
+		if (drm_panel_disable(dp->plat_data->panel))
 			DRM_ERROR("failed to disable the panel\n");
 	}
 
-	ret = exynos_dp_detect_hpd(dp);
+	ret = analogix_dp_detect_hpd(dp);
 	if (ret) {
 		/* Cable has been disconnected, we're done */
 		return;
 	}
 
-	ret = exynos_dp_handle_edid(dp);
+	ret = analogix_dp_handle_edid(dp);
 	if (ret) {
 		dev_err(dp->dev, "unable to handle edid\n");
 		return;
 	}
 
-	ret = exynos_dp_set_link_train(dp, dp->video_info->lane_count,
-				       dp->video_info->link_rate);
+	ret = analogix_dp_set_link_train(dp, dp->video_info->lane_count,
+					 dp->video_info->link_rate);
 	if (ret) {
 		dev_err(dp->dev, "unable to do link train\n");
 		return;
 	}
 
-	exynos_dp_enable_scramble(dp, 1);
-	exynos_dp_enable_rx_to_enhanced_mode(dp, 1);
-	exynos_dp_enable_enhanced_mode(dp, 1);
+	analogix_dp_enable_scramble(dp, 1);
+	analogix_dp_enable_rx_to_enhanced_mode(dp, 1);
+	analogix_dp_enable_enhanced_mode(dp, 1);
 
-	exynos_dp_set_lane_count(dp, dp->video_info->lane_count);
-	exynos_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
+	analogix_dp_set_lane_count(dp, dp->video_info->lane_count);
+	analogix_dp_set_link_bandwidth(dp, dp->video_info->link_rate);
 
-	exynos_dp_init_video(dp);
-	ret = exynos_dp_config_video(dp);
+	analogix_dp_init_video(dp);
+	ret = analogix_dp_config_video(dp);
 	if (ret)
 		dev_err(dp->dev, "unable to config video\n");
 
 	/* Safe to enable the panel now */
-	if (dp->panel) {
-		if (drm_panel_enable(dp->panel))
+	if (dp->plat_data && dp->plat_data->panel) {
+		if (drm_panel_enable(dp->plat_data->panel))
 			DRM_ERROR("failed to enable the panel\n");
 	}
 
 	/* Enable video */
-	exynos_dp_start_video(dp);
+	analogix_dp_start_video(dp);
 }
 
 static enum drm_connector_status
-exynos_dp_detect(struct drm_connector *connector, bool force)
+analogix_dp_detect(struct drm_connector *connector, bool force)
 {
 	return connector_status_connected;
 }
 
-static void exynos_dp_connector_destroy(struct drm_connector *connector)
+static void analogix_dp_connector_destroy(struct drm_connector *connector)
 {
 	drm_connector_unregister(connector);
 	drm_connector_cleanup(connector);
 }
 
-static struct drm_connector_funcs exynos_dp_connector_funcs = {
+static struct drm_connector_funcs analogix_dp_connector_funcs = {
 	.dpms = drm_atomic_helper_connector_dpms,
 	.fill_modes = drm_helper_probe_single_connector_modes,
-	.detect = exynos_dp_detect,
-	.destroy = exynos_dp_connector_destroy,
+	.detect = analogix_dp_detect,
+	.destroy = analogix_dp_connector_destroy,
 	.reset = drm_atomic_helper_connector_reset,
 	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int exynos_dp_get_modes(struct drm_connector *connector)
+static int analogix_dp_get_modes(struct drm_connector *connector)
 {
-	struct exynos_dp_device *dp = ctx_from_connector(connector);
-	struct drm_display_mode *mode;
-
-	if (dp->panel)
-		return drm_panel_get_modes(dp->panel);
+	struct analogix_dp_device *dp = connector_to_dp(connector);
+	struct analogix_dp_plat_data *plat_data = dp->plat_data;
+	int num_modes = 0;
 
-	mode = drm_mode_create(connector->dev);
-	if (!mode) {
-		DRM_ERROR("failed to create a new display mode.\n");
-		return 0;
-	}
-
-	drm_display_mode_from_videomode(&dp->priv.vm, mode);
-	mode->width_mm = dp->priv.width_mm;
-	mode->height_mm = dp->priv.height_mm;
-	connector->display_info.width_mm = mode->width_mm;
-	connector->display_info.height_mm = mode->height_mm;
+	if (plat_data && plat_data->panel)
+		num_modes += drm_panel_get_modes(plat_data->panel);
 
-	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
-	drm_mode_set_name(mode);
-	drm_mode_probed_add(connector, mode);
+	if (plat_data && plat_data->get_modes)
+		 num_modes += plat_data->get_modes(plat_data, connector);
 
-	return 1;
+	return num_modes;
 }
 
 static struct drm_encoder *
-exynos_dp_best_encoder(struct drm_connector *connector)
+analogix_dp_best_encoder(struct drm_connector *connector)
 {
-	struct exynos_dp_device *dp = ctx_from_connector(connector);
+	struct analogix_dp_device *dp = connector_to_dp(connector);
 
-	return &dp->encoder;
+	return dp->encoder;
 }
 
-static struct drm_connector_helper_funcs exynos_dp_connector_helper_funcs = {
-	.get_modes = exynos_dp_get_modes,
-	.best_encoder = exynos_dp_best_encoder,
+static struct drm_connector_helper_funcs analogix_dp_connector_helper_funcs = {
+	.get_modes = analogix_dp_get_modes,
+	.best_encoder = analogix_dp_best_encoder,
 };
 
-/* returns the number of bridges attached */
-static int exynos_drm_attach_lcd_bridge(struct exynos_dp_device *dp,
-					struct drm_encoder *encoder)
-{
-	int ret;
-
-	encoder->bridge->next = dp->ptn_bridge;
-	dp->ptn_bridge->encoder = encoder;
-	ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
-	if (ret) {
-		DRM_ERROR("Failed to attach bridge to drm\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int exynos_dp_bridge_attach(struct drm_bridge *bridge)
+static int analogix_dp_bridge_attach(struct drm_bridge *bridge)
 {
-	struct exynos_dp_device *dp = bridge->driver_private;
-	struct drm_encoder *encoder = &dp->encoder;
+	struct analogix_dp_device *dp = bridge->driver_private;
+	struct drm_encoder *encoder = dp->encoder;
 	struct drm_connector *connector = &dp->connector;
 	int ret;
 
-	/* Pre-empt DP connector creation if there's a bridge */
-	if (dp->ptn_bridge) {
-		ret = exynos_drm_attach_lcd_bridge(dp, encoder);
-		if (!ret)
-			return 0;
+	if (!bridge->encoder) {
+		DRM_ERROR("Parent encoder object not found");
+		return -ENODEV;
 	}
 
+	encoder->bridge = bridge;
+
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
 
 	ret = drm_connector_init(dp->drm_dev, connector,
-				 &exynos_dp_connector_funcs,
+				 &analogix_dp_connector_funcs,
 				 DRM_MODE_CONNECTOR_eDP);
 	if (ret) {
 		DRM_ERROR("Failed to initialize connector with drm\n");
 		return ret;
 	}
 
-	drm_connector_helper_add(connector, &exynos_dp_connector_helper_funcs);
+	drm_connector_helper_add(connector,
+				 &analogix_dp_connector_helper_funcs);
 	drm_connector_register(connector);
 	drm_mode_connector_attach_encoder(connector, encoder);
 
-	if (dp->panel)
-		ret = drm_panel_attach(dp->panel, &dp->connector);
+	if (dp->plat_data && dp->plat_data->panel) {
+		ret = drm_panel_attach(dp->plat_data->panel, &dp->connector);
+		if (ret) {
+			DRM_ERROR("Failed to attach panel\n");
+			return ret;
+		}
+	}
+
+	/*
+	 * This should be the end of attach function, caused
+	 * we should ensure dp bridge could attach first.
+	 */
+	 if (dp->plat_data && dp->plat_data->attach) {
+		 ret = dp->plat_data->attach(dp->plat_data, bridge);
+		 if (ret) {
+			 DRM_ERROR("Failed at platform attch func\n");
+			 return ret;
+		 }
+	 }
 
-	return ret;
+	return 0;
 }
 
-static void exynos_dp_bridge_enable(struct drm_bridge *bridge)
+static void analogix_dp_bridge_enable(struct drm_bridge *bridge)
 {
-	struct exynos_dp_device *dp = bridge->driver_private;
-	struct exynos_drm_crtc *crtc = dp_to_crtc(dp);
+	struct analogix_dp_device *dp = bridge->driver_private;
 
 	if (dp->dpms_mode == DRM_MODE_DPMS_ON)
 		return;
 
-	if (dp->panel) {
-		if (drm_panel_prepare(dp->panel)) {
+	if (dp->plat_data && dp->plat_data->panel) {
+		if (drm_panel_prepare(dp->plat_data->panel)) {
 			DRM_ERROR("failed to setup the panel\n");
 			return;
 		}
 	}
 
-	if (crtc->ops->clock_enable)
-		crtc->ops->clock_enable(dp_to_crtc(dp), true);
+	if (dp->plat_data && dp->plat_data->power_on)
+		dp->plat_data->power_on(dp->plat_data);
 
 	clk_prepare_enable(dp->clock);
 	phy_power_on(dp->phy);
-	exynos_dp_init_dp(dp);
+	analogix_dp_init_dp(dp);
 	enable_irq(dp->irq);
-	exynos_dp_commit(&dp->encoder);
+	analogix_dp_commit(dp);
 
 	dp->dpms_mode = DRM_MODE_DPMS_ON;
 }
 
-static void exynos_dp_bridge_disable(struct drm_bridge *bridge)
+static void analogix_dp_bridge_disable(struct drm_bridge *bridge)
 {
-	struct exynos_dp_device *dp = bridge->driver_private;
-	struct exynos_drm_crtc *crtc = dp_to_crtc(dp);
+	struct analogix_dp_device *dp = bridge->driver_private;
 
 	if (dp->dpms_mode != DRM_MODE_DPMS_ON)
 		return;
 
-	if (dp->panel) {
-		if (drm_panel_disable(dp->panel)) {
+	if (dp->plat_data && dp->plat_data->panel) {
+		if (drm_panel_disable(dp->plat_data->panel)) {
 			DRM_ERROR("failed to disable the panel\n");
 			return;
 		}
@@ -1093,34 +1070,33 @@  static void exynos_dp_bridge_disable(struct drm_bridge *bridge)
 	phy_power_off(dp->phy);
 	clk_disable_unprepare(dp->clock);
 
-	if (crtc->ops->clock_enable)
-		crtc->ops->clock_enable(dp_to_crtc(dp), false);
+	if (dp->plat_data && dp->plat_data->power_off)
+		dp->plat_data->power_off(dp->plat_data);
 
-	if (dp->panel) {
-		if (drm_panel_unprepare(dp->panel))
+	if (dp->plat_data && dp->plat_data->panel) {
+		if (drm_panel_unprepare(dp->plat_data->panel))
 			DRM_ERROR("failed to turnoff the panel\n");
 	}
 
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
 }
 
-static void exynos_dp_bridge_nop(struct drm_bridge *bridge)
+static void analogix_dp_bridge_nop(struct drm_bridge *bridge)
 {
 	/* do nothing */
 }
 
-static const struct drm_bridge_funcs exynos_dp_bridge_funcs = {
-	.enable = exynos_dp_bridge_enable,
-	.disable = exynos_dp_bridge_disable,
-	.pre_enable = exynos_dp_bridge_nop,
-	.post_disable = exynos_dp_bridge_nop,
-	.attach = exynos_dp_bridge_attach,
+static const struct drm_bridge_funcs analogix_dp_bridge_funcs = {
+	.enable = analogix_dp_bridge_enable,
+	.disable = analogix_dp_bridge_disable,
+	.pre_enable = analogix_dp_bridge_nop,
+	.post_disable = analogix_dp_bridge_nop,
+	.attach = analogix_dp_bridge_attach,
 };
 
-static int exynos_dp_create_connector(struct drm_encoder *encoder)
+static int analogix_dp_create_bridge(struct drm_device *drm_dev,
+				     struct analogix_dp_device *dp)
 {
-	struct exynos_dp_device *dp = encoder_to_dp(encoder);
-	struct drm_device *drm_dev = dp->drm_dev;
 	struct drm_bridge *bridge;
 	int ret;
 
@@ -1133,8 +1109,8 @@  static int exynos_dp_create_connector(struct drm_encoder *encoder)
 	dp->bridge = bridge;
 
 	bridge->driver_private = dp;
-	bridge->encoder = encoder;
-	bridge->funcs = &exynos_dp_bridge_funcs;
+	bridge->encoder = dp->encoder;
+	bridge->funcs = &analogix_dp_bridge_funcs;
 
 	ret = drm_bridge_attach(drm_dev, bridge);
 	if (ret) {
@@ -1145,39 +1121,7 @@  static int exynos_dp_create_connector(struct drm_encoder *encoder)
 	return 0;
 }
 
-static bool exynos_dp_mode_fixup(struct drm_encoder *encoder,
-				 const struct drm_display_mode *mode,
-				 struct drm_display_mode *adjusted_mode)
-{
-	return true;
-}
-
-static void exynos_dp_mode_set(struct drm_encoder *encoder,
-			       struct drm_display_mode *mode,
-			       struct drm_display_mode *adjusted_mode)
-{
-}
-
-static void exynos_dp_enable(struct drm_encoder *encoder)
-{
-}
-
-static void exynos_dp_disable(struct drm_encoder *encoder)
-{
-}
-
-static struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
-	.mode_fixup = exynos_dp_mode_fixup,
-	.mode_set = exynos_dp_mode_set,
-	.enable = exynos_dp_enable,
-	.disable = exynos_dp_disable,
-};
-
-static struct drm_encoder_funcs exynos_dp_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
-static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
+static struct video_info *analogix_dp_dt_parse_pdata(struct device *dev)
 {
 	struct device_node *dp_node = dev->of_node;
 	struct video_info *dp_video_config;
@@ -1235,33 +1179,33 @@  static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
 	return dp_video_config;
 }
 
-static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
+int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+		     struct drm_encoder *encoder,
+		     struct analogix_dp_plat_data *plat_data)
 {
-	int ret;
-
-	ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm,
-			       OF_USE_NATIVE_MODE);
-	if (ret) {
-		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
-		return ret;
-	}
-	return 0;
-}
-
-static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
-{
-	struct exynos_dp_device *dp = dev_get_drvdata(dev);
 	struct platform_device *pdev = to_platform_device(dev);
-	struct drm_device *drm_dev = data;
-	struct drm_encoder *encoder = &dp->encoder;
+	struct analogix_dp_device *dp;
 	struct resource *res;
 	unsigned int irq_flags;
-	int pipe, ret = 0;
+	int ret;
+
+	dp = devm_kzalloc(dev, sizeof(struct analogix_dp_device), GFP_KERNEL);
+	if (!dp)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, dp);
 
 	dp->dev = &pdev->dev;
 	dp->dpms_mode = DRM_MODE_DPMS_OFF;
 
-	dp->video_info = exynos_dp_dt_parse_pdata(&pdev->dev);
+	/*
+	 * platform dp driver need containor_of the plat_data to get
+	 * the driver private data, so we need to store the point of
+	 * plat_data, not the context of plat_data.
+	 */
+	dp->plat_data = plat_data;
+
+	dp->video_info = analogix_dp_dt_parse_pdata(&pdev->dev);
 	if (IS_ERR(dp->video_info))
 		return PTR_ERR(dp->video_info);
 
@@ -1281,12 +1225,6 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 		}
 	}
 
-	if (!dp->panel && !dp->bridge) {
-		ret = exynos_dp_dt_parse_panel(dp);
-		if (ret)
-			return ret;
-	}
-
 	dp->clock = devm_clk_get(&pdev->dev, "dp");
 	if (IS_ERR(dp->clock)) {
 		dev_err(&pdev->dev, "failed to get clock\n");
@@ -1301,7 +1239,10 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	if (IS_ERR(dp->reg_base))
 		return PTR_ERR(dp->reg_base);
 
-	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "samsung,hpd-gpio", 0);
+	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
+	if (gpio_is_valid(dp->hpd_gpio))
+		dp->hpd_gpio = of_get_named_gpio(dev->of_node,
+						 "samsung,hpd-gpio", 0);
 
 	if (gpio_is_valid(dp->hpd_gpio)) {
 		/*
@@ -1330,14 +1271,14 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 		return -ENODEV;
 	}
 
-	INIT_WORK(&dp->hotplug_work, exynos_dp_hotplug);
+	INIT_WORK(&dp->hotplug_work, analogix_dp_hotplug);
 
 	phy_power_on(dp->phy);
 
-	exynos_dp_init_dp(dp);
+	analogix_dp_init_dp(dp);
 
-	ret = devm_request_irq(&pdev->dev, dp->irq, exynos_dp_irq_handler,
-			       irq_flags, "exynos-dp", dp);
+	ret = devm_request_irq(&pdev->dev, dp->irq, analogix_dp_irq_handler,
+			       irq_flags, "analogix-dp", dp);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request irq\n");
 		return ret;
@@ -1345,22 +1286,9 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 	disable_irq(dp->irq);
 
 	dp->drm_dev = drm_dev;
+	dp->encoder = encoder;
 
-	pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
-						  EXYNOS_DISPLAY_TYPE_LCD);
-	if (pipe < 0)
-		return pipe;
-
-	encoder->possible_crtcs = 1 << pipe;
-
-	DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
-
-	drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
-			 DRM_MODE_ENCODER_TMDS);
-
-	drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
-
-	ret = exynos_dp_create_connector(encoder);
+	ret = analogix_dp_create_bridge(drm_dev, dp);
 	if (ret) {
 		DRM_ERROR("failed to create connector ret = %d\n", ret);
 		drm_encoder_cleanup(encoder);
@@ -1369,103 +1297,36 @@  static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(analogix_dp_bind);
 
-static void exynos_dp_unbind(struct device *dev, struct device *master,
-			     void *data)
+void analogix_dp_unbind(struct device *dev, struct device *master, void *data)
 {
-	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 
-	exynos_dp_disable(&dp->encoder);
-}
-
-static const struct component_ops exynos_dp_ops = {
-	.bind	= exynos_dp_bind,
-	.unbind	= exynos_dp_unbind,
-};
-
-static int exynos_dp_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct device_node *panel_node, *bridge_node, *endpoint;
-	struct exynos_dp_device *dp;
-
-	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
-			  GFP_KERNEL);
-	if (!dp)
-		return -ENOMEM;
-
-	platform_set_drvdata(pdev, dp);
-
-	panel_node = of_parse_phandle(dev->of_node, "panel", 0);
-	if (panel_node) {
-		dp->panel = of_drm_find_panel(panel_node);
-		of_node_put(panel_node);
-		if (!dp->panel)
-			return -EPROBE_DEFER;
-	}
-
-	endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
-	if (endpoint) {
-		bridge_node = of_graph_get_remote_port_parent(endpoint);
-		if (bridge_node) {
-			dp->ptn_bridge = of_drm_find_bridge(bridge_node);
-			of_node_put(bridge_node);
-			if (!dp->ptn_bridge)
-				return -EPROBE_DEFER;
-		} else {
-			return -EPROBE_DEFER;
-		}
-	}
-
-	return component_add(&pdev->dev, &exynos_dp_ops);
-}
-
-static int exynos_dp_remove(struct platform_device *pdev)
-{
-	component_del(&pdev->dev, &exynos_dp_ops);
-
-	return 0;
+	analogix_dp_bridge_disable(dp->bridge);
 }
+EXPORT_SYMBOL_GPL(analogix_dp_unbind);
 
 #ifdef CONFIG_PM_SLEEP
-static int exynos_dp_suspend(struct device *dev)
+int analogix_dp_suspend(struct device *dev)
 {
-	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 
-	exynos_dp_bridge_disable(dp->bridge);
+	analogix_dp_bridge_disable(dp->bridge);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(analogix_dp_suspend);
 
-static int exynos_dp_resume(struct device *dev)
+int analogix_dp_resume(struct device *dev)
 {
-	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+	struct analogix_dp_device *dp = dev_get_drvdata(dev);
 
-	exynos_dp_bridge_enable(dp->bridge);
+	analogix_dp_bridge_enable(dp->bridge);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(analogix_dp_resume);
 #endif
 
-static const struct dev_pm_ops exynos_dp_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume)
-};
-
-static const struct of_device_id exynos_dp_match[] = {
-	{ .compatible = "samsung,exynos5-dp" },
-	{},
-};
-MODULE_DEVICE_TABLE(of, exynos_dp_match);
-
-struct platform_driver dp_driver = {
-	.probe		= exynos_dp_probe,
-	.remove		= exynos_dp_remove,
-	.driver		= {
-		.name	= "exynos-dp",
-		.owner	= THIS_MODULE,
-		.pm	= &exynos_dp_pm_ops,
-		.of_match_table = exynos_dp_match,
-	},
-};
-
 MODULE_AUTHOR("Jingoo Han <[e-mail]>");
-MODULE_DESCRIPTION("Samsung SoC DP Driver");
+MODULE_DESCRIPTION("Analogix Core DP Driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
new file mode 100644
index 0000000..d7e47e0
--- /dev/null
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -0,0 +1,283 @@ 
+/*
+ * Header file for Analogix DP (Display Port) core interface driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <[e-mail]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef _ANALOGIX_DP_CORE_H
+#define _ANALOGIX_DP_CORE_H
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_dp_helper.h>
+
+#define DP_TIMEOUT_LOOP_COUNT 100
+#define MAX_CR_LOOP 5
+#define MAX_EQ_LOOP 5
+
+enum link_rate_type {
+	LINK_RATE_1_62GBPS = 0x06,
+	LINK_RATE_2_70GBPS = 0x0a
+};
+
+enum link_lane_count_type {
+	LANE_COUNT1 = 1,
+	LANE_COUNT2 = 2,
+	LANE_COUNT4 = 4
+};
+
+enum link_training_state {
+	START,
+	CLOCK_RECOVERY,
+	EQUALIZER_TRAINING,
+	FINISHED,
+	FAILED
+};
+
+enum voltage_swing_level {
+	VOLTAGE_LEVEL_0,
+	VOLTAGE_LEVEL_1,
+	VOLTAGE_LEVEL_2,
+	VOLTAGE_LEVEL_3,
+};
+
+enum pre_emphasis_level {
+	PRE_EMPHASIS_LEVEL_0,
+	PRE_EMPHASIS_LEVEL_1,
+	PRE_EMPHASIS_LEVEL_2,
+	PRE_EMPHASIS_LEVEL_3,
+};
+
+enum pattern_set {
+	PRBS7,
+	D10_2,
+	TRAINING_PTN1,
+	TRAINING_PTN2,
+	DP_NONE
+};
+
+enum color_space {
+	COLOR_RGB,
+	COLOR_YCBCR422,
+	COLOR_YCBCR444
+};
+
+enum color_depth {
+	COLOR_6,
+	COLOR_8,
+	COLOR_10,
+	COLOR_12
+};
+
+enum color_coefficient {
+	COLOR_YCBCR601,
+	COLOR_YCBCR709
+};
+
+enum dynamic_range {
+	VESA,
+	CEA
+};
+
+enum pll_status {
+	PLL_UNLOCKED,
+	PLL_LOCKED
+};
+
+enum clock_recovery_m_value_type {
+	CALCULATED_M,
+	REGISTER_M
+};
+
+enum video_timing_recognition_type {
+	VIDEO_TIMING_FROM_CAPTURE,
+	VIDEO_TIMING_FROM_REGISTER
+};
+
+enum analog_power_block {
+	AUX_BLOCK,
+	CH0_BLOCK,
+	CH1_BLOCK,
+	CH2_BLOCK,
+	CH3_BLOCK,
+	ANALOG_TOTAL,
+	POWER_ALL
+};
+
+enum dp_irq_type {
+	DP_IRQ_TYPE_HP_CABLE_IN,
+	DP_IRQ_TYPE_HP_CABLE_OUT,
+	DP_IRQ_TYPE_HP_CHANGE,
+	DP_IRQ_TYPE_UNKNOWN,
+};
+
+struct video_info {
+	char *name;
+
+	bool h_sync_polarity;
+	bool v_sync_polarity;
+	bool interlaced;
+
+	enum color_space color_space;
+	enum dynamic_range dynamic_range;
+	enum color_coefficient ycbcr_coeff;
+	enum color_depth color_depth;
+
+	enum link_rate_type link_rate;
+	enum link_lane_count_type lane_count;
+};
+
+struct link_train {
+	int eq_loop;
+	int cr_loop[4];
+
+	u8 link_rate;
+	u8 lane_count;
+	u8 training_lane[4];
+
+	enum link_training_state lt_state;
+};
+
+struct analogix_dp_device {
+	struct device		*dev;
+	struct drm_device	*drm_dev;
+	struct drm_connector	connector;
+	struct drm_encoder	*encoder;
+	struct drm_bridge	*bridge;
+	struct clk		*clock;
+	unsigned int		irq;
+	void __iomem		*reg_base;
+
+	struct video_info	*video_info;
+	struct link_train	link_train;
+	struct work_struct	hotplug_work;
+	struct phy		*phy;
+	int			dpms_mode;
+	int			hpd_gpio;
+
+	struct analogix_dp_plat_data *plat_data;
+};
+
+/* analogix_dp_reg.c */
+void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable);
+void analogix_dp_stop_video(struct analogix_dp_device *dp);
+void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable);
+void analogix_dp_init_analog_param(struct analogix_dp_device *dp);
+void analogix_dp_init_interrupt(struct analogix_dp_device *dp);
+void analogix_dp_reset(struct analogix_dp_device *dp);
+void analogix_dp_swreset(struct analogix_dp_device *dp);
+void analogix_dp_config_interrupt(struct analogix_dp_device *dp);
+enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp);
+void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable);
+void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
+				       enum analog_power_block block,
+				       bool enable);
+void analogix_dp_init_analog_func(struct analogix_dp_device *dp);
+void analogix_dp_init_hpd(struct analogix_dp_device *dp);
+enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp);
+void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp);
+void analogix_dp_reset_aux(struct analogix_dp_device *dp);
+void analogix_dp_init_aux(struct analogix_dp_device *dp);
+int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp);
+void analogix_dp_enable_sw_function(struct analogix_dp_device *dp);
+int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp);
+int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp,
+				   unsigned int reg_addr,
+				   unsigned char data);
+int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp,
+				    unsigned int reg_addr,
+				    unsigned char *data);
+int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp,
+				    unsigned int reg_addr,
+				    unsigned int count,
+				    unsigned char data[]);
+int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp,
+				     unsigned int reg_addr,
+				     unsigned int count,
+				     unsigned char data[]);
+int analogix_dp_select_i2c_device(struct analogix_dp_device *dp,
+				  unsigned int device_addr,
+				  unsigned int reg_addr);
+int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp,
+				   unsigned int device_addr,
+				   unsigned int reg_addr,
+				   unsigned int *data);
+int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp,
+				    unsigned int device_addr,
+				    unsigned int reg_addr,
+				    unsigned int count,
+				    unsigned char edid[]);
+void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype);
+void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype);
+void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count);
+void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count);
+void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp,
+				      bool enable);
+void analogix_dp_set_training_pattern(struct analogix_dp_device *dp,
+				      enum pattern_set pattern);
+void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level);
+void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level);
+void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level);
+void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level);
+void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane);
+void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane);
+void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane);
+void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane);
+u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp);
+u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp);
+u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp);
+u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp);
+void analogix_dp_reset_macro(struct analogix_dp_device *dp);
+void analogix_dp_init_video(struct analogix_dp_device *dp);
+
+void analogix_dp_set_video_color_format(struct analogix_dp_device *dp);
+int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp);
+void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp,
+				 enum clock_recovery_m_value_type type,
+				 u32 m_value,
+				 u32 n_value);
+void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type);
+void analogix_dp_enable_video_master(struct analogix_dp_device *dp,
+				     bool enable);
+void analogix_dp_start_video(struct analogix_dp_device *dp);
+int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp);
+void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp);
+void analogix_dp_enable_scrambling(struct analogix_dp_device *dp);
+void analogix_dp_disable_scrambling(struct analogix_dp_device *dp);
+
+/* I2C EDID Chip ID, Slave Address */
+#define I2C_EDID_DEVICE_ADDR			0x50
+#define I2C_E_EDID_DEVICE_ADDR			0x30
+
+#define EDID_BLOCK_LENGTH			0x80
+#define EDID_HEADER_PATTERN			0x00
+#define EDID_EXTENSION_FLAG			0x7e
+#define EDID_CHECKSUM				0x7f
+
+/* DP_MAX_LANE_COUNT */
+#define DPCD_ENHANCED_FRAME_CAP(x)		(((x) >> 7) & 0x1)
+#define DPCD_MAX_LANE_COUNT(x)			((x) & 0x1f)
+
+/* DP_LANE_COUNT_SET */
+#define DPCD_LANE_COUNT_SET(x)			((x) & 0x1f)
+
+/* DP_TRAINING_LANE0_SET */
+#define DPCD_PRE_EMPHASIS_SET(x)		(((x) & 0x3) << 3)
+#define DPCD_PRE_EMPHASIS_GET(x)		(((x) >> 3) & 0x3)
+#define DPCD_VOLTAGE_SWING_SET(x)		(((x) & 0x3) << 0)
+#define DPCD_VOLTAGE_SWING_GET(x)		(((x) >> 0) & 0x3)
+
+#endif /* _ANALOGIX_DP_CORE_H */
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
new file mode 100644
index 0000000..b879d8c
--- /dev/null
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -0,0 +1,1265 @@ 
+/*
+ * Analogix DP (Display port) core register interface driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <[e-mail]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include "analogix_dp_core.h"
+#include "analogix_dp_reg.h"
+
+#define COMMON_INT_MASK_1	0
+#define COMMON_INT_MASK_2	0
+#define COMMON_INT_MASK_3	0
+#define COMMON_INT_MASK_4	(HOTPLUG_CHG | HPD_LOST | PLUG)
+#define INT_STA_MASK		INT_HPD
+
+void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable)
+{
+	u32 reg;
+
+	if (enable) {
+		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+		reg |= HDCP_VIDEO_MUTE;
+		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+	} else {
+		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+		reg &= ~HDCP_VIDEO_MUTE;
+		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+	}
+}
+
+void analogix_dp_stop_video(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+	reg &= ~VIDEO_EN;
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+}
+
+void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable)
+{
+	u32 reg;
+
+	if (enable)
+		reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
+			LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
+	else
+		reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
+			LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
+
+	writel(reg, dp->reg_base + ANALOGIX_DP_LANE_MAP);
+}
+
+void analogix_dp_init_analog_param(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = TX_TERMINAL_CTRL_50_OHM;
+	writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_1);
+
+	reg = SEL_24M | TX_DVDD_BIT_1_0625V;
+	writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_2);
+
+	reg = DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO;
+	writel(reg, dp->reg_base + ANALOGIX_DP_ANALOG_CTL_3);
+
+	reg = PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM |
+		TX_CUR1_2X | TX_CUR_16_MA;
+	writel(reg, dp->reg_base + ANALOGIX_DP_PLL_FILTER_CTL_1);
+
+	reg = CH3_AMP_400_MV | CH2_AMP_400_MV |
+		CH1_AMP_400_MV | CH0_AMP_400_MV;
+	writel(reg, dp->reg_base + ANALOGIX_DP_TX_AMP_TUNING_CTL);
+}
+
+void analogix_dp_init_interrupt(struct analogix_dp_device *dp)
+{
+	/* Set interrupt pin assertion polarity as high */
+	writel(INT_POL1 | INT_POL0, dp->reg_base + ANALOGIX_DP_INT_CTL);
+
+	/* Clear pending regisers */
+	writel(0xff, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1);
+	writel(0x4f, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_2);
+	writel(0xe0, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_3);
+	writel(0xe7, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4);
+	writel(0x63, dp->reg_base + ANALOGIX_DP_INT_STA);
+
+	/* 0:mask,1: unmask */
+	writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_1);
+	writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_2);
+	writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_3);
+	writel(0x00, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+	writel(0x00, dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+}
+
+void analogix_dp_reset(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	analogix_dp_stop_video(dp);
+	analogix_dp_enable_video_mute(dp, 0);
+
+	reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
+		AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
+		HDCP_FUNC_EN_N | SW_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+
+	reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
+		SERDES_FIFO_FUNC_EN_N |
+		LS_CLK_DOMAIN_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+
+	usleep_range(20, 30);
+
+	analogix_dp_lane_swap(dp, 0);
+
+	writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+	writel(0x40, dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+	writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+	writel(0x0, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+
+	writel(0x0, dp->reg_base + ANALOGIX_DP_PKT_SEND_CTL);
+	writel(0x0, dp->reg_base + ANALOGIX_DP_HDCP_CTL);
+
+	writel(0x5e, dp->reg_base + ANALOGIX_DP_HPD_DEGLITCH_L);
+	writel(0x1a, dp->reg_base + ANALOGIX_DP_HPD_DEGLITCH_H);
+
+	writel(0x10, dp->reg_base + ANALOGIX_DP_LINK_DEBUG_CTL);
+
+	writel(0x0, dp->reg_base + ANALOGIX_DP_PHY_TEST);
+
+	writel(0x0, dp->reg_base + ANALOGIX_DP_VIDEO_FIFO_THRD);
+	writel(0x20, dp->reg_base + ANALOGIX_DP_AUDIO_MARGIN);
+
+	writel(0x4, dp->reg_base + ANALOGIX_DP_M_VID_GEN_FILTER_TH);
+	writel(0x2, dp->reg_base + ANALOGIX_DP_M_AUD_GEN_FILTER_TH);
+
+	writel(0x00000101, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+}
+
+void analogix_dp_swreset(struct analogix_dp_device *dp)
+{
+	writel(RESET_DP_TX, dp->reg_base + ANALOGIX_DP_TX_SW_RESET);
+}
+
+void analogix_dp_config_interrupt(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	/* 0: mask, 1: unmask */
+	reg = COMMON_INT_MASK_1;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_1);
+
+	reg = COMMON_INT_MASK_2;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_2);
+
+	reg = COMMON_INT_MASK_3;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_3);
+
+	reg = COMMON_INT_MASK_4;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_MASK_4);
+
+	reg = INT_STA_MASK;
+	writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA_MASK);
+}
+
+enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_DEBUG_CTL);
+	if (reg & PLL_LOCK)
+		return PLL_LOCKED;
+	else
+		return PLL_UNLOCKED;
+}
+
+void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable)
+{
+	u32 reg;
+
+	if (enable) {
+		reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
+		reg |= DP_PLL_PD;
+		writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+	} else {
+		reg = readl(dp->reg_base + ANALOGIX_DP_PLL_CTL);
+		reg &= ~DP_PLL_PD;
+		writel(reg, dp->reg_base + ANALOGIX_DP_PLL_CTL);
+	}
+}
+
+void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
+				       enum analog_power_block block,
+				       bool enable)
+{
+	u32 reg;
+
+	switch (block) {
+	case AUX_BLOCK:
+		if (enable) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg |= AUX_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg &= ~AUX_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	case CH0_BLOCK:
+		if (enable) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg |= CH0_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg &= ~CH0_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	case CH1_BLOCK:
+		if (enable) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg |= CH1_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg &= ~CH1_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	case CH2_BLOCK:
+		if (enable) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg |= CH2_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg &= ~CH2_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	case CH3_BLOCK:
+		if (enable) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg |= CH3_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg &= ~CH3_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	case ANALOG_TOTAL:
+		if (enable) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg |= DP_PHY_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			reg = readl(dp->reg_base + ANALOGIX_DP_PHY_PD);
+			reg &= ~DP_PHY_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	case POWER_ALL:
+		if (enable) {
+			reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD |
+				CH1_PD | CH0_PD;
+			writel(reg, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		} else {
+			writel(0x00, dp->reg_base + ANALOGIX_DP_PHY_PD);
+		}
+		break;
+	default:
+		break;
+	}
+}
+
+void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
+{
+	u32 reg;
+	int timeout_loop = 0;
+
+	analogix_dp_set_analog_power_down(dp, POWER_ALL, 0);
+
+	reg = PLL_LOCK_CHG;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_DEBUG_CTL);
+	reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL);
+	writel(reg, dp->reg_base + ANALOGIX_DP_DEBUG_CTL);
+
+	/* Power up PLL */
+	if (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+		analogix_dp_set_pll_power_down(dp, 0);
+
+		while (analogix_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
+			timeout_loop++;
+			if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
+				dev_err(dp->dev, "failed to get pll lock status\n");
+				return;
+			}
+			usleep_range(10, 20);
+		}
+	}
+
+	/* Enable Serdes FIFO function and Link symbol clock domain module */
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
+		| AUX_FUNC_EN_N);
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	if (gpio_is_valid(dp->hpd_gpio))
+		return;
+
+	reg = HOTPLUG_CHG | HPD_LOST | PLUG;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4);
+
+	reg = INT_HPD;
+	writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA);
+}
+
+void analogix_dp_init_hpd(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	if (gpio_is_valid(dp->hpd_gpio))
+		return;
+
+	analogix_dp_clear_hotplug_interrupts(dp);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+	reg &= ~(F_HPD | HPD_CTRL);
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+}
+
+enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	if (gpio_is_valid(dp->hpd_gpio)) {
+		reg = gpio_get_value(dp->hpd_gpio);
+		if (reg)
+			return DP_IRQ_TYPE_HP_CABLE_IN;
+		else
+			return DP_IRQ_TYPE_HP_CABLE_OUT;
+	} else {
+		/* Parse hotplug interrupt status register */
+		reg = readl(dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_4);
+
+		if (reg & PLUG)
+			return DP_IRQ_TYPE_HP_CABLE_IN;
+
+		if (reg & HPD_LOST)
+			return DP_IRQ_TYPE_HP_CABLE_OUT;
+
+		if (reg & HOTPLUG_CHG)
+			return DP_IRQ_TYPE_HP_CHANGE;
+
+		return DP_IRQ_TYPE_UNKNOWN;
+	}
+}
+
+void analogix_dp_reset_aux(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	/* Disable AUX channel module */
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	reg |= AUX_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+void analogix_dp_init_aux(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	/* Clear inerrupts related to AUX channel */
+	reg = RPLY_RECEIV | AUX_ERR;
+	writel(reg, dp->reg_base + ANALOGIX_DP_INT_STA);
+
+	analogix_dp_reset_aux(dp);
+
+	/* Disable AUX transaction H/W retry */
+	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) |
+	      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
+	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_HW_RETRY_CTL);
+
+	/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
+	reg = DEFER_CTRL_EN | DEFER_COUNT(1);
+	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_DEFER_CTL);
+
+	/* Enable AUX channel module */
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+	reg &= ~AUX_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
+}
+
+int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	if (gpio_is_valid(dp->hpd_gpio)) {
+		if (gpio_get_value(dp->hpd_gpio))
+			return 0;
+	} else {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+		if (reg & HPD_STATUS)
+			return 0;
+	}
+
+	return -EINVAL;
+}
+
+void analogix_dp_enable_sw_function(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+	reg &= ~SW_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+}
+
+int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp)
+{
+	int reg;
+	int retval = 0;
+	int timeout_loop = 0;
+
+	/* Enable AUX CH operation */
+	reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+	reg |= AUX_EN;
+	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+
+	/* Is AUX CH command reply received? */
+	reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
+	while (!(reg & RPLY_RECEIV)) {
+		timeout_loop++;
+		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
+			dev_err(dp->dev, "AUX CH command reply failed!\n");
+			return -ETIMEDOUT;
+		}
+		reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
+		usleep_range(10, 11);
+	}
+
+	/* Clear interrupt source for AUX CH command reply */
+	writel(RPLY_RECEIV, dp->reg_base + ANALOGIX_DP_INT_STA);
+
+	/* Clear interrupt source for AUX CH access error */
+	reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
+	if (reg & AUX_ERR) {
+		writel(AUX_ERR, dp->reg_base + ANALOGIX_DP_INT_STA);
+		return -EREMOTEIO;
+	}
+
+	/* Check AUX CH error access status */
+	reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_STA);
+	if ((reg & AUX_STATUS_MASK) != 0) {
+		dev_err(dp->dev, "AUX CH error happens: %d\n\n",
+			reg & AUX_STATUS_MASK);
+		return -EREMOTEIO;
+	}
+
+	return retval;
+}
+
+int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp,
+				   unsigned int reg_addr,
+				   unsigned char data)
+{
+	u32 reg;
+	int i;
+	int retval;
+
+	for (i = 0; i < 3; i++) {
+		/* Clear AUX CH data buffer */
+		reg = BUF_CLR;
+		writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+		/* Select DPCD device address */
+		reg = AUX_ADDR_7_0(reg_addr);
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+		reg = AUX_ADDR_15_8(reg_addr);
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+		reg = AUX_ADDR_19_16(reg_addr);
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+		/* Write data buffer */
+		reg = (unsigned int)data;
+		writel(reg, dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+
+		/*
+		 * Set DisplayPort transaction and write 1 byte
+		 * If bit 3 is 1, DisplayPort transaction.
+		 * If Bit 3 is 0, I2C transaction.
+		 */
+		reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+		/* Start AUX transaction */
+		retval = analogix_dp_start_aux_transaction(dp);
+		if (retval == 0)
+			break;
+
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+	}
+
+	return retval;
+}
+
+int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp,
+				    unsigned int reg_addr,
+				    unsigned char *data)
+{
+	u32 reg;
+	int i;
+	int retval;
+
+	for (i = 0; i < 3; i++) {
+		/* Clear AUX CH data buffer */
+		reg = BUF_CLR;
+		writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+		/* Select DPCD device address */
+		reg = AUX_ADDR_7_0(reg_addr);
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+		reg = AUX_ADDR_15_8(reg_addr);
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+		reg = AUX_ADDR_19_16(reg_addr);
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+		/*
+		 * Set DisplayPort transaction and read 1 byte
+		 * If bit 3 is 1, DisplayPort transaction.
+		 * If Bit 3 is 0, I2C transaction.
+		 */
+		reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+		/* Start AUX transaction */
+		retval = analogix_dp_start_aux_transaction(dp);
+		if (retval == 0)
+			break;
+
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+	}
+
+	/* Read data buffer */
+	reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+	*data = (unsigned char)(reg & 0xff);
+
+	return retval;
+}
+
+int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp,
+				    unsigned int reg_addr,
+				    unsigned int count,
+				    unsigned char data[])
+{
+	u32 reg;
+	unsigned int start_offset;
+	unsigned int cur_data_count;
+	unsigned int cur_data_idx;
+	int i;
+	int retval = 0;
+
+	/* Clear AUX CH data buffer */
+	reg = BUF_CLR;
+	writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+	start_offset = 0;
+	while (start_offset < count) {
+		/* Buffer size of AUX CH is 16 * 4bytes */
+		if ((count - start_offset) > 16)
+			cur_data_count = 16;
+		else
+			cur_data_count = count - start_offset;
+
+		for (i = 0; i < 3; i++) {
+			/* Select DPCD device address */
+			reg = AUX_ADDR_7_0(reg_addr + start_offset);
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+			reg = AUX_ADDR_15_8(reg_addr + start_offset);
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+			reg = AUX_ADDR_19_16(reg_addr + start_offset);
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+			for (cur_data_idx = 0; cur_data_idx < cur_data_count;
+			     cur_data_idx++) {
+				reg = data[start_offset + cur_data_idx];
+				writel(reg, dp->reg_base +
+				       ANALOGIX_DP_BUF_DATA_0 +
+				       4 * cur_data_idx);
+			}
+
+			/*
+			 * Set DisplayPort transaction and write
+			 * If bit 3 is 1, DisplayPort transaction.
+			 * If Bit 3 is 0, I2C transaction.
+			 */
+			reg = AUX_LENGTH(cur_data_count) |
+				AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+			/* Start AUX transaction */
+			retval = analogix_dp_start_aux_transaction(dp);
+			if (retval == 0)
+				break;
+
+			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+				__func__);
+		}
+
+		start_offset += cur_data_count;
+	}
+
+	return retval;
+}
+
+int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp,
+				     unsigned int reg_addr,
+				     unsigned int count,
+				     unsigned char data[])
+{
+	u32 reg;
+	unsigned int start_offset;
+	unsigned int cur_data_count;
+	unsigned int cur_data_idx;
+	int i;
+	int retval = 0;
+
+	/* Clear AUX CH data buffer */
+	reg = BUF_CLR;
+	writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+	start_offset = 0;
+	while (start_offset < count) {
+		/* Buffer size of AUX CH is 16 * 4bytes */
+		if ((count - start_offset) > 16)
+			cur_data_count = 16;
+		else
+			cur_data_count = count - start_offset;
+
+		/* AUX CH Request Transaction process */
+		for (i = 0; i < 3; i++) {
+			/* Select DPCD device address */
+			reg = AUX_ADDR_7_0(reg_addr + start_offset);
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+			reg = AUX_ADDR_15_8(reg_addr + start_offset);
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+			reg = AUX_ADDR_19_16(reg_addr + start_offset);
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+			/*
+			 * Set DisplayPort transaction and read
+			 * If bit 3 is 1, DisplayPort transaction.
+			 * If Bit 3 is 0, I2C transaction.
+			 */
+			reg = AUX_LENGTH(cur_data_count) |
+				AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+			/* Start AUX transaction */
+			retval = analogix_dp_start_aux_transaction(dp);
+			if (retval == 0)
+				break;
+
+			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+				__func__);
+		}
+
+		for (cur_data_idx = 0; cur_data_idx < cur_data_count;
+		    cur_data_idx++) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0
+						 + 4 * cur_data_idx);
+			data[start_offset + cur_data_idx] =
+				(unsigned char)reg;
+		}
+
+		start_offset += cur_data_count;
+	}
+
+	return retval;
+}
+
+int analogix_dp_select_i2c_device(struct analogix_dp_device *dp,
+				  unsigned int device_addr,
+				  unsigned int reg_addr)
+{
+	u32 reg;
+	int retval;
+
+	/* Set EDID device address */
+	reg = device_addr;
+	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_ADDR_7_0);
+	writel(0x0, dp->reg_base + ANALOGIX_DP_AUX_ADDR_15_8);
+	writel(0x0, dp->reg_base + ANALOGIX_DP_AUX_ADDR_19_16);
+
+	/* Set offset from base address of EDID device */
+	writel(reg_addr, dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+
+	/*
+	 * Set I2C transaction and write address
+	 * If bit 3 is 1, DisplayPort transaction.
+	 * If Bit 3 is 0, I2C transaction.
+	 */
+	reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT |
+		AUX_TX_COMM_WRITE;
+	writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+	/* Start AUX transaction */
+	retval = analogix_dp_start_aux_transaction(dp);
+	if (retval != 0)
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+
+	return retval;
+}
+
+int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp,
+				   unsigned int device_addr,
+				   unsigned int reg_addr,
+				   unsigned int *data)
+{
+	u32 reg;
+	int i;
+	int retval;
+
+	for (i = 0; i < 3; i++) {
+		/* Clear AUX CH data buffer */
+		reg = BUF_CLR;
+		writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+		/* Select EDID device */
+		retval = analogix_dp_select_i2c_device(dp, device_addr,
+						       reg_addr);
+		if (retval != 0)
+			continue;
+
+		/*
+		 * Set I2C transaction and read data
+		 * If bit 3 is 1, DisplayPort transaction.
+		 * If Bit 3 is 0, I2C transaction.
+		 */
+		reg = AUX_TX_COMM_I2C_TRANSACTION |
+			AUX_TX_COMM_READ;
+		writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_1);
+
+		/* Start AUX transaction */
+		retval = analogix_dp_start_aux_transaction(dp);
+		if (retval == 0)
+			break;
+
+		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
+	}
+
+	/* Read data */
+	if (retval == 0)
+		*data = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0);
+
+	return retval;
+}
+
+int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp,
+				    unsigned int device_addr,
+				    unsigned int reg_addr,
+				    unsigned int count,
+				    unsigned char edid[])
+{
+	u32 reg;
+	unsigned int i, j;
+	unsigned int cur_data_idx;
+	unsigned int defer = 0;
+	int retval = 0;
+
+	for (i = 0; i < count; i += 16) {
+		for (j = 0; j < 3; j++) {
+			/* Clear AUX CH data buffer */
+			reg = BUF_CLR;
+			writel(reg, dp->reg_base + ANALOGIX_DP_BUFFER_DATA_CTL);
+
+			/* Set normal AUX CH command */
+			reg = readl(dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+			reg &= ~ADDR_ONLY;
+			writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
+
+			/*
+			 * If Rx sends defer, Tx sends only reads
+			 * request without sending address
+			 */
+			if (!defer)
+				retval = analogix_dp_select_i2c_device(
+						dp, device_addr, reg_addr + i);
+			else
+				defer = 0;
+
+			if (retval == 0) {
+				/*
+				 * Set I2C transaction and write data
+				 * If bit 3 is 1, DisplayPort transaction.
+				 * If Bit 3 is 0, I2C transaction.
+				 */
+				reg = AUX_LENGTH(16) |
+					AUX_TX_COMM_I2C_TRANSACTION |
+					AUX_TX_COMM_READ;
+				writel(reg, dp->reg_base +
+					ANALOGIX_DP_AUX_CH_CTL_1);
+
+				/* Start AUX transaction */
+				retval = analogix_dp_start_aux_transaction(dp);
+				if (retval == 0)
+					break;
+
+				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
+					__func__);
+			}
+			/* Check if Rx sends defer */
+			reg = readl(dp->reg_base + ANALOGIX_DP_AUX_RX_COMM);
+			if (reg == AUX_RX_COMM_AUX_DEFER ||
+			    reg == AUX_RX_COMM_I2C_DEFER) {
+				dev_err(dp->dev, "Defer: %d\n\n", reg);
+				defer = 1;
+			}
+		}
+
+		for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) {
+			reg = readl(dp->reg_base + ANALOGIX_DP_BUF_DATA_0
+						 + 4 * cur_data_idx);
+			edid[i + cur_data_idx] = (unsigned char)reg;
+		}
+	}
+
+	return retval;
+}
+
+void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype)
+{
+	u32 reg;
+
+	reg = bwtype;
+	if ((bwtype == LINK_RATE_2_70GBPS) || (bwtype == LINK_RATE_1_62GBPS))
+		writel(reg, dp->reg_base + ANALOGIX_DP_LINK_BW_SET);
+}
+
+void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LINK_BW_SET);
+	*bwtype = reg;
+}
+
+void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count)
+{
+	u32 reg;
+
+	reg = count;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LANE_COUNT_SET);
+}
+
+void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LANE_COUNT_SET);
+	*count = reg;
+}
+
+void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp,
+				      bool enable)
+{
+	u32 reg;
+
+	if (enable) {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+		reg |= ENHANCED;
+		writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+	} else {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+		reg &= ~ENHANCED;
+		writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+	}
+}
+
+void analogix_dp_set_training_pattern(struct analogix_dp_device *dp,
+				      enum pattern_set pattern)
+{
+	u32 reg;
+
+	switch (pattern) {
+	case PRBS7:
+		reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7;
+		writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+		break;
+	case D10_2:
+		reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2;
+		writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+		break;
+	case TRAINING_PTN1:
+		reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1;
+		writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+		break;
+	case TRAINING_PTN2:
+		reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2;
+		writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+		break;
+	case DP_NONE:
+		reg = SCRAMBLING_ENABLE |
+			LINK_QUAL_PATTERN_SET_DISABLE |
+			SW_TRAINING_PATTERN_SET_NORMAL;
+		writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+		break;
+	default:
+		break;
+	}
+}
+
+void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+	reg &= ~PRE_EMPHASIS_SET_MASK;
+	reg |= level << PRE_EMPHASIS_SET_SHIFT;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+	reg &= ~PRE_EMPHASIS_SET_MASK;
+	reg |= level << PRE_EMPHASIS_SET_SHIFT;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+	reg &= ~PRE_EMPHASIS_SET_MASK;
+	reg |= level << PRE_EMPHASIS_SET_SHIFT;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp,
+					u32 level)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+	reg &= ~PRE_EMPHASIS_SET_MASK;
+	reg |= level << PRE_EMPHASIS_SET_SHIFT;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane)
+{
+	u32 reg;
+
+	reg = training_lane;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane)
+{
+	u32 reg;
+
+	reg = training_lane;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane)
+{
+	u32 reg;
+
+	reg = training_lane;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+}
+
+void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp,
+					 u32 training_lane)
+{
+	u32 reg;
+
+	reg = training_lane;
+	writel(reg, dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+}
+
+u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN0_LINK_TRAINING_CTL);
+	return reg;
+}
+
+u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN1_LINK_TRAINING_CTL);
+	return reg;
+}
+
+u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN2_LINK_TRAINING_CTL);
+	return reg;
+}
+
+u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_LN3_LINK_TRAINING_CTL);
+	return reg;
+}
+
+void analogix_dp_reset_macro(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_PHY_TEST);
+	reg |= MACRO_RST;
+	writel(reg, dp->reg_base + ANALOGIX_DP_PHY_TEST);
+
+	/* 10 us is the minimum reset time. */
+	usleep_range(10, 20);
+
+	reg &= ~MACRO_RST;
+	writel(reg, dp->reg_base + ANALOGIX_DP_PHY_TEST);
+}
+
+void analogix_dp_init_video(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG;
+	writel(reg, dp->reg_base + ANALOGIX_DP_COMMON_INT_STA_1);
+
+	reg = 0x0;
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+
+	reg = CHA_CRI(4) | CHA_CTRL;
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+
+	reg = 0x0;
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+
+	reg = VID_HRES_TH(2) | VID_VRES_TH(0);
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_8);
+}
+
+void analogix_dp_set_video_color_format(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	/* Configure the input color depth, color space, dynamic range */
+	reg = (dp->video_info->dynamic_range << IN_D_RANGE_SHIFT) |
+		(dp->video_info->color_depth << IN_BPC_SHIFT) |
+		(dp->video_info->color_space << IN_COLOR_F_SHIFT);
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_2);
+
+	/* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */
+	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3);
+	reg &= ~IN_YC_COEFFI_MASK;
+	if (dp->video_info->ycbcr_coeff)
+		reg |= IN_YC_COEFFI_ITU709;
+	else
+		reg |= IN_YC_COEFFI_ITU601;
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3);
+}
+
+int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_1);
+
+	if (!(reg & DET_STA)) {
+		dev_dbg(dp->dev, "Input stream clock not detected.\n");
+		return -EINVAL;
+	}
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_2);
+	dev_dbg(dp->dev, "wait SYS_CTL_2.\n");
+
+	if (reg & CHA_STA) {
+		dev_dbg(dp->dev, "Input stream clk is changing\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp,
+				 enum clock_recovery_m_value_type type,
+				 u32 m_value, u32 n_value)
+{
+	u32 reg;
+
+	if (type == REGISTER_M) {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+		reg |= FIX_M_VID;
+		writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+		reg = m_value & 0xff;
+		writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_0);
+		reg = (m_value >> 8) & 0xff;
+		writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_1);
+		reg = (m_value >> 16) & 0xff;
+		writel(reg, dp->reg_base + ANALOGIX_DP_M_VID_2);
+
+		reg = n_value & 0xff;
+		writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_0);
+		reg = (n_value >> 8) & 0xff;
+		writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_1);
+		reg = (n_value >> 16) & 0xff;
+		writel(reg, dp->reg_base + ANALOGIX_DP_N_VID_2);
+	} else  {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+		reg &= ~FIX_M_VID;
+		writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_4);
+
+		writel(0x00, dp->reg_base + ANALOGIX_DP_N_VID_0);
+		writel(0x80, dp->reg_base + ANALOGIX_DP_N_VID_1);
+		writel(0x00, dp->reg_base + ANALOGIX_DP_N_VID_2);
+	}
+}
+
+void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type)
+{
+	u32 reg;
+
+	if (type == VIDEO_TIMING_FROM_CAPTURE) {
+		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+		reg &= ~FORMAT_SEL;
+		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+	} else {
+		reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+		reg |= FORMAT_SEL;
+		writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+	}
+}
+
+void analogix_dp_enable_video_master(struct analogix_dp_device *dp, bool enable)
+{
+	u32 reg;
+
+	if (enable) {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+		reg &= ~VIDEO_MODE_MASK;
+		reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE;
+		writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+	} else {
+		reg = readl(dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+		reg &= ~VIDEO_MODE_MASK;
+		reg |= VIDEO_MODE_SLAVE_MODE;
+		writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+	}
+}
+
+void analogix_dp_start_video(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+	reg |= VIDEO_EN;
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_1);
+}
+
+int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+	writel(reg, dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3);
+	if (!(reg & STRM_VALID)) {
+		dev_dbg(dp->dev, "Input video stream is not detected.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+	reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
+	reg |= MASTER_VID_FUNC_EN_N;
+	writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_1);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+	reg &= ~INTERACE_SCAN_CFG;
+	reg |= (dp->video_info->interlaced << 2);
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+	reg &= ~VSYNC_POLARITY_CFG;
+	reg |= (dp->video_info->v_sync_polarity << 1);
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+	reg &= ~HSYNC_POLARITY_CFG;
+	reg |= (dp->video_info->h_sync_polarity << 0);
+	writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10);
+
+	reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE;
+	writel(reg, dp->reg_base + ANALOGIX_DP_SOC_GENERAL_CTL);
+}
+
+void analogix_dp_enable_scrambling(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+	reg &= ~SCRAMBLING_DISABLE;
+	writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+}
+
+void analogix_dp_disable_scrambling(struct analogix_dp_device *dp)
+{
+	u32 reg;
+
+	reg = readl(dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+	reg |= SCRAMBLING_DISABLE;
+	writel(reg, dp->reg_base + ANALOGIX_DP_TRAINING_PTN_SET);
+}
diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
similarity index 64%
rename from drivers/gpu/drm/exynos/exynos_dp_reg.h
rename to drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
index 2e9bd0e..2d878fd 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_reg.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h
@@ -1,5 +1,5 @@ 
 /*
- * Register definition file for Samsung DP driver
+ * Register definition file for Analogix DP core driver
  *
  * Copyright (C) 2012 Samsung Electronics Co., Ltd.
  * Author: Jingoo Han <[e-mail]>
@@ -9,96 +9,96 @@ 
  * published by the Free Software Foundation.
  */
 
-#ifndef _EXYNOS_DP_REG_H
-#define _EXYNOS_DP_REG_H
-
-#define EXYNOS_DP_TX_SW_RESET			0x14
-#define EXYNOS_DP_FUNC_EN_1			0x18
-#define EXYNOS_DP_FUNC_EN_2			0x1C
-#define EXYNOS_DP_VIDEO_CTL_1			0x20
-#define EXYNOS_DP_VIDEO_CTL_2			0x24
-#define EXYNOS_DP_VIDEO_CTL_3			0x28
-
-#define EXYNOS_DP_VIDEO_CTL_8			0x3C
-#define EXYNOS_DP_VIDEO_CTL_10			0x44
-
-#define EXYNOS_DP_LANE_MAP			0x35C
-
-#define EXYNOS_DP_ANALOG_CTL_1			0x370
-#define EXYNOS_DP_ANALOG_CTL_2			0x374
-#define EXYNOS_DP_ANALOG_CTL_3			0x378
-#define EXYNOS_DP_PLL_FILTER_CTL_1		0x37C
-#define EXYNOS_DP_TX_AMP_TUNING_CTL		0x380
-
-#define EXYNOS_DP_AUX_HW_RETRY_CTL		0x390
-
-#define EXYNOS_DP_COMMON_INT_STA_1		0x3C4
-#define EXYNOS_DP_COMMON_INT_STA_2		0x3C8
-#define EXYNOS_DP_COMMON_INT_STA_3		0x3CC
-#define EXYNOS_DP_COMMON_INT_STA_4		0x3D0
-#define EXYNOS_DP_INT_STA			0x3DC
-#define EXYNOS_DP_COMMON_INT_MASK_1		0x3E0
-#define EXYNOS_DP_COMMON_INT_MASK_2		0x3E4
-#define EXYNOS_DP_COMMON_INT_MASK_3		0x3E8
-#define EXYNOS_DP_COMMON_INT_MASK_4		0x3EC
-#define EXYNOS_DP_INT_STA_MASK			0x3F8
-#define EXYNOS_DP_INT_CTL			0x3FC
-
-#define EXYNOS_DP_SYS_CTL_1			0x600
-#define EXYNOS_DP_SYS_CTL_2			0x604
-#define EXYNOS_DP_SYS_CTL_3			0x608
-#define EXYNOS_DP_SYS_CTL_4			0x60C
-
-#define EXYNOS_DP_PKT_SEND_CTL			0x640
-#define EXYNOS_DP_HDCP_CTL			0x648
-
-#define EXYNOS_DP_LINK_BW_SET			0x680
-#define EXYNOS_DP_LANE_COUNT_SET		0x684
-#define EXYNOS_DP_TRAINING_PTN_SET		0x688
-#define EXYNOS_DP_LN0_LINK_TRAINING_CTL		0x68C
-#define EXYNOS_DP_LN1_LINK_TRAINING_CTL		0x690
-#define EXYNOS_DP_LN2_LINK_TRAINING_CTL		0x694
-#define EXYNOS_DP_LN3_LINK_TRAINING_CTL		0x698
-
-#define EXYNOS_DP_DEBUG_CTL			0x6C0
-#define EXYNOS_DP_HPD_DEGLITCH_L		0x6C4
-#define EXYNOS_DP_HPD_DEGLITCH_H		0x6C8
-#define EXYNOS_DP_LINK_DEBUG_CTL		0x6E0
-
-#define EXYNOS_DP_M_VID_0			0x700
-#define EXYNOS_DP_M_VID_1			0x704
-#define EXYNOS_DP_M_VID_2			0x708
-#define EXYNOS_DP_N_VID_0			0x70C
-#define EXYNOS_DP_N_VID_1			0x710
-#define EXYNOS_DP_N_VID_2			0x714
-
-#define EXYNOS_DP_PLL_CTL			0x71C
-#define EXYNOS_DP_PHY_PD			0x720
-#define EXYNOS_DP_PHY_TEST			0x724
-
-#define EXYNOS_DP_VIDEO_FIFO_THRD		0x730
-#define EXYNOS_DP_AUDIO_MARGIN			0x73C
-
-#define EXYNOS_DP_M_VID_GEN_FILTER_TH		0x764
-#define EXYNOS_DP_M_AUD_GEN_FILTER_TH		0x778
-#define EXYNOS_DP_AUX_CH_STA			0x780
-#define EXYNOS_DP_AUX_CH_DEFER_CTL		0x788
-#define EXYNOS_DP_AUX_RX_COMM			0x78C
-#define EXYNOS_DP_BUFFER_DATA_CTL		0x790
-#define EXYNOS_DP_AUX_CH_CTL_1			0x794
-#define EXYNOS_DP_AUX_ADDR_7_0			0x798
-#define EXYNOS_DP_AUX_ADDR_15_8			0x79C
-#define EXYNOS_DP_AUX_ADDR_19_16		0x7A0
-#define EXYNOS_DP_AUX_CH_CTL_2			0x7A4
-
-#define EXYNOS_DP_BUF_DATA_0			0x7C0
-
-#define EXYNOS_DP_SOC_GENERAL_CTL		0x800
-
-/* EXYNOS_DP_TX_SW_RESET */
+#ifndef _ANALOGIX_DP_REG_H
+#define _ANALOGIX_DP_REG_H
+
+#define ANALOGIX_DP_TX_SW_RESET			0x14
+#define ANALOGIX_DP_FUNC_EN_1			0x18
+#define ANALOGIX_DP_FUNC_EN_2			0x1C
+#define ANALOGIX_DP_VIDEO_CTL_1			0x20
+#define ANALOGIX_DP_VIDEO_CTL_2			0x24
+#define ANALOGIX_DP_VIDEO_CTL_3			0x28
+
+#define ANALOGIX_DP_VIDEO_CTL_8			0x3C
+#define ANALOGIX_DP_VIDEO_CTL_10			0x44
+
+#define ANALOGIX_DP_LANE_MAP			0x35C
+
+#define ANALOGIX_DP_ANALOG_CTL_1			0x370
+#define ANALOGIX_DP_ANALOG_CTL_2			0x374
+#define ANALOGIX_DP_ANALOG_CTL_3			0x378
+#define ANALOGIX_DP_PLL_FILTER_CTL_1		0x37C
+#define ANALOGIX_DP_TX_AMP_TUNING_CTL		0x380
+
+#define ANALOGIX_DP_AUX_HW_RETRY_CTL		0x390
+
+#define ANALOGIX_DP_COMMON_INT_STA_1		0x3C4
+#define ANALOGIX_DP_COMMON_INT_STA_2		0x3C8
+#define ANALOGIX_DP_COMMON_INT_STA_3		0x3CC
+#define ANALOGIX_DP_COMMON_INT_STA_4		0x3D0
+#define ANALOGIX_DP_INT_STA			0x3DC
+#define ANALOGIX_DP_COMMON_INT_MASK_1		0x3E0
+#define ANALOGIX_DP_COMMON_INT_MASK_2		0x3E4
+#define ANALOGIX_DP_COMMON_INT_MASK_3		0x3E8
+#define ANALOGIX_DP_COMMON_INT_MASK_4		0x3EC
+#define ANALOGIX_DP_INT_STA_MASK			0x3F8
+#define ANALOGIX_DP_INT_CTL			0x3FC
+
+#define ANALOGIX_DP_SYS_CTL_1			0x600
+#define ANALOGIX_DP_SYS_CTL_2			0x604
+#define ANALOGIX_DP_SYS_CTL_3			0x608
+#define ANALOGIX_DP_SYS_CTL_4			0x60C
+
+#define ANALOGIX_DP_PKT_SEND_CTL			0x640
+#define ANALOGIX_DP_HDCP_CTL			0x648
+
+#define ANALOGIX_DP_LINK_BW_SET			0x680
+#define ANALOGIX_DP_LANE_COUNT_SET		0x684
+#define ANALOGIX_DP_TRAINING_PTN_SET		0x688
+#define ANALOGIX_DP_LN0_LINK_TRAINING_CTL		0x68C
+#define ANALOGIX_DP_LN1_LINK_TRAINING_CTL		0x690
+#define ANALOGIX_DP_LN2_LINK_TRAINING_CTL		0x694
+#define ANALOGIX_DP_LN3_LINK_TRAINING_CTL		0x698
+
+#define ANALOGIX_DP_DEBUG_CTL			0x6C0
+#define ANALOGIX_DP_HPD_DEGLITCH_L		0x6C4
+#define ANALOGIX_DP_HPD_DEGLITCH_H		0x6C8
+#define ANALOGIX_DP_LINK_DEBUG_CTL		0x6E0
+
+#define ANALOGIX_DP_M_VID_0			0x700
+#define ANALOGIX_DP_M_VID_1			0x704
+#define ANALOGIX_DP_M_VID_2			0x708
+#define ANALOGIX_DP_N_VID_0			0x70C
+#define ANALOGIX_DP_N_VID_1			0x710
+#define ANALOGIX_DP_N_VID_2			0x714
+
+#define ANALOGIX_DP_PLL_CTL			0x71C
+#define ANALOGIX_DP_PHY_PD			0x720
+#define ANALOGIX_DP_PHY_TEST			0x724
+
+#define ANALOGIX_DP_VIDEO_FIFO_THRD		0x730
+#define ANALOGIX_DP_AUDIO_MARGIN			0x73C
+
+#define ANALOGIX_DP_M_VID_GEN_FILTER_TH		0x764
+#define ANALOGIX_DP_M_AUD_GEN_FILTER_TH		0x778
+#define ANALOGIX_DP_AUX_CH_STA			0x780
+#define ANALOGIX_DP_AUX_CH_DEFER_CTL		0x788
+#define ANALOGIX_DP_AUX_RX_COMM			0x78C
+#define ANALOGIX_DP_BUFFER_DATA_CTL		0x790
+#define ANALOGIX_DP_AUX_CH_CTL_1			0x794
+#define ANALOGIX_DP_AUX_ADDR_7_0			0x798
+#define ANALOGIX_DP_AUX_ADDR_15_8			0x79C
+#define ANALOGIX_DP_AUX_ADDR_19_16		0x7A0
+#define ANALOGIX_DP_AUX_CH_CTL_2			0x7A4
+
+#define ANALOGIX_DP_BUF_DATA_0			0x7C0
+
+#define ANALOGIX_DP_SOC_GENERAL_CTL		0x800
+
+/* ANALOGIX_DP_TX_SW_RESET */
 #define RESET_DP_TX				(0x1 << 0)
 
-/* EXYNOS_DP_FUNC_EN_1 */
+/* ANALOGIX_DP_FUNC_EN_1 */
 #define MASTER_VID_FUNC_EN_N			(0x1 << 7)
 #define SLAVE_VID_FUNC_EN_N			(0x1 << 5)
 #define AUD_FIFO_FUNC_EN_N			(0x1 << 4)
@@ -107,17 +107,17 @@ 
 #define CRC_FUNC_EN_N				(0x1 << 1)
 #define SW_FUNC_EN_N				(0x1 << 0)
 
-/* EXYNOS_DP_FUNC_EN_2 */
+/* ANALOGIX_DP_FUNC_EN_2 */
 #define SSC_FUNC_EN_N				(0x1 << 7)
 #define AUX_FUNC_EN_N				(0x1 << 2)
 #define SERDES_FIFO_FUNC_EN_N			(0x1 << 1)
 #define LS_CLK_DOMAIN_FUNC_EN_N			(0x1 << 0)
 
-/* EXYNOS_DP_VIDEO_CTL_1 */
+/* ANALOGIX_DP_VIDEO_CTL_1 */
 #define VIDEO_EN				(0x1 << 7)
 #define HDCP_VIDEO_MUTE				(0x1 << 6)
 
-/* EXYNOS_DP_VIDEO_CTL_1 */
+/* ANALOGIX_DP_VIDEO_CTL_1 */
 #define IN_D_RANGE_MASK				(0x1 << 7)
 #define IN_D_RANGE_SHIFT			(7)
 #define IN_D_RANGE_CEA				(0x1 << 7)
@@ -134,7 +134,7 @@ 
 #define IN_COLOR_F_YCBCR422			(0x1 << 0)
 #define IN_COLOR_F_RGB				(0x0 << 0)
 
-/* EXYNOS_DP_VIDEO_CTL_3 */
+/* ANALOGIX_DP_VIDEO_CTL_3 */
 #define IN_YC_COEFFI_MASK			(0x1 << 7)
 #define IN_YC_COEFFI_SHIFT			(7)
 #define IN_YC_COEFFI_ITU709			(0x1 << 7)
@@ -144,17 +144,17 @@ 
 #define VID_CHK_UPDATE_TYPE_1			(0x1 << 4)
 #define VID_CHK_UPDATE_TYPE_0			(0x0 << 4)
 
-/* EXYNOS_DP_VIDEO_CTL_8 */
+/* ANALOGIX_DP_VIDEO_CTL_8 */
 #define VID_HRES_TH(x)				(((x) & 0xf) << 4)
 #define VID_VRES_TH(x)				(((x) & 0xf) << 0)
 
-/* EXYNOS_DP_VIDEO_CTL_10 */
+/* ANALOGIX_DP_VIDEO_CTL_10 */
 #define FORMAT_SEL				(0x1 << 4)
 #define INTERACE_SCAN_CFG			(0x1 << 2)
 #define VSYNC_POLARITY_CFG			(0x1 << 1)
 #define HSYNC_POLARITY_CFG			(0x1 << 0)
 
-/* EXYNOS_DP_LANE_MAP */
+/* ANALOGIX_DP_LANE_MAP */
 #define LANE3_MAP_LOGIC_LANE_0			(0x0 << 6)
 #define LANE3_MAP_LOGIC_LANE_1			(0x1 << 6)
 #define LANE3_MAP_LOGIC_LANE_2			(0x2 << 6)
@@ -172,30 +172,30 @@ 
 #define LANE0_MAP_LOGIC_LANE_2			(0x2 << 0)
 #define LANE0_MAP_LOGIC_LANE_3			(0x3 << 0)
 
-/* EXYNOS_DP_ANALOG_CTL_1 */
+/* ANALOGIX_DP_ANALOG_CTL_1 */
 #define TX_TERMINAL_CTRL_50_OHM			(0x1 << 4)
 
-/* EXYNOS_DP_ANALOG_CTL_2 */
+/* ANALOGIX_DP_ANALOG_CTL_2 */
 #define SEL_24M					(0x1 << 3)
 #define TX_DVDD_BIT_1_0625V			(0x4 << 0)
 
-/* EXYNOS_DP_ANALOG_CTL_3 */
+/* ANALOGIX_DP_ANALOG_CTL_3 */
 #define DRIVE_DVDD_BIT_1_0625V			(0x4 << 5)
 #define VCO_BIT_600_MICRO			(0x5 << 0)
 
-/* EXYNOS_DP_PLL_FILTER_CTL_1 */
+/* ANALOGIX_DP_PLL_FILTER_CTL_1 */
 #define PD_RING_OSC				(0x1 << 6)
 #define AUX_TERMINAL_CTRL_50_OHM		(0x2 << 4)
 #define TX_CUR1_2X				(0x1 << 2)
 #define TX_CUR_16_MA				(0x3 << 0)
 
-/* EXYNOS_DP_TX_AMP_TUNING_CTL */
+/* ANALOGIX_DP_TX_AMP_TUNING_CTL */
 #define CH3_AMP_400_MV				(0x0 << 24)
 #define CH2_AMP_400_MV				(0x0 << 16)
 #define CH1_AMP_400_MV				(0x0 << 8)
 #define CH0_AMP_400_MV				(0x0 << 0)
 
-/* EXYNOS_DP_AUX_HW_RETRY_CTL */
+/* ANALOGIX_DP_AUX_HW_RETRY_CTL */
 #define AUX_BIT_PERIOD_EXPECTED_DELAY(x)	(((x) & 0x7) << 8)
 #define AUX_HW_RETRY_INTERVAL_MASK		(0x3 << 3)
 #define AUX_HW_RETRY_INTERVAL_600_MICROSECONDS	(0x0 << 3)
@@ -204,7 +204,7 @@ 
 #define AUX_HW_RETRY_INTERVAL_1800_MICROSECONDS	(0x3 << 3)
 #define AUX_HW_RETRY_COUNT_SEL(x)		(((x) & 0x7) << 0)
 
-/* EXYNOS_DP_COMMON_INT_STA_1 */
+/* ANALOGIX_DP_COMMON_INT_STA_1 */
 #define VSYNC_DET				(0x1 << 7)
 #define PLL_LOCK_CHG				(0x1 << 6)
 #define SPDIF_ERR				(0x1 << 5)
@@ -214,19 +214,19 @@ 
 #define VID_CLK_CHG				(0x1 << 1)
 #define SW_INT					(0x1 << 0)
 
-/* EXYNOS_DP_COMMON_INT_STA_2 */
+/* ANALOGIX_DP_COMMON_INT_STA_2 */
 #define ENC_EN_CHG				(0x1 << 6)
 #define HW_BKSV_RDY				(0x1 << 3)
 #define HW_SHA_DONE				(0x1 << 2)
 #define HW_AUTH_STATE_CHG			(0x1 << 1)
 #define HW_AUTH_DONE				(0x1 << 0)
 
-/* EXYNOS_DP_COMMON_INT_STA_3 */
+/* ANALOGIX_DP_COMMON_INT_STA_3 */
 #define AFIFO_UNDER				(0x1 << 7)
 #define AFIFO_OVER				(0x1 << 6)
 #define R0_CHK_FLAG				(0x1 << 5)
 
-/* EXYNOS_DP_COMMON_INT_STA_4 */
+/* ANALOGIX_DP_COMMON_INT_STA_4 */
 #define PSR_ACTIVE				(0x1 << 7)
 #define PSR_INACTIVE				(0x1 << 6)
 #define SPDIF_BI_PHASE_ERR			(0x1 << 5)
@@ -234,29 +234,29 @@ 
 #define HPD_LOST				(0x1 << 1)
 #define PLUG					(0x1 << 0)
 
-/* EXYNOS_DP_INT_STA */
+/* ANALOGIX_DP_INT_STA */
 #define INT_HPD					(0x1 << 6)
 #define HW_TRAINING_FINISH			(0x1 << 5)
 #define RPLY_RECEIV				(0x1 << 1)
 #define AUX_ERR					(0x1 << 0)
 
-/* EXYNOS_DP_INT_CTL */
+/* ANALOGIX_DP_INT_CTL */
 #define SOFT_INT_CTRL				(0x1 << 2)
 #define INT_POL1				(0x1 << 1)
 #define INT_POL0				(0x1 << 0)
 
-/* EXYNOS_DP_SYS_CTL_1 */
+/* ANALOGIX_DP_SYS_CTL_1 */
 #define DET_STA					(0x1 << 2)
 #define FORCE_DET				(0x1 << 1)
 #define DET_CTRL				(0x1 << 0)
 
-/* EXYNOS_DP_SYS_CTL_2 */
+/* ANALOGIX_DP_SYS_CTL_2 */
 #define CHA_CRI(x)				(((x) & 0xf) << 4)
 #define CHA_STA					(0x1 << 2)
 #define FORCE_CHA				(0x1 << 1)
 #define CHA_CTRL				(0x1 << 0)
 
-/* EXYNOS_DP_SYS_CTL_3 */
+/* ANALOGIX_DP_SYS_CTL_3 */
 #define HPD_STATUS				(0x1 << 6)
 #define F_HPD					(0x1 << 5)
 #define HPD_CTRL				(0x1 << 4)
@@ -265,13 +265,13 @@ 
 #define F_VALID					(0x1 << 1)
 #define VALID_CTRL				(0x1 << 0)
 
-/* EXYNOS_DP_SYS_CTL_4 */
+/* ANALOGIX_DP_SYS_CTL_4 */
 #define FIX_M_AUD				(0x1 << 4)
 #define ENHANCED				(0x1 << 3)
 #define FIX_M_VID				(0x1 << 2)
 #define M_VID_UPDATE_CTRL			(0x3 << 0)
 
-/* EXYNOS_DP_TRAINING_PTN_SET */
+/* ANALOGIX_DP_TRAINING_PTN_SET */
 #define SCRAMBLER_TYPE				(0x1 << 9)
 #define HW_LINK_TRAINING_PATTERN		(0x1 << 8)
 #define SCRAMBLING_DISABLE			(0x1 << 5)
@@ -285,24 +285,24 @@ 
 #define SW_TRAINING_PATTERN_SET_PTN1		(0x1 << 0)
 #define SW_TRAINING_PATTERN_SET_NORMAL		(0x0 << 0)
 
-/* EXYNOS_DP_LN0_LINK_TRAINING_CTL */
+/* ANALOGIX_DP_LN0_LINK_TRAINING_CTL */
 #define PRE_EMPHASIS_SET_MASK			(0x3 << 3)
 #define PRE_EMPHASIS_SET_SHIFT			(3)
 
-/* EXYNOS_DP_DEBUG_CTL */
+/* ANALOGIX_DP_DEBUG_CTL */
 #define PLL_LOCK				(0x1 << 4)
 #define F_PLL_LOCK				(0x1 << 3)
 #define PLL_LOCK_CTRL				(0x1 << 2)
 #define PN_INV					(0x1 << 0)
 
-/* EXYNOS_DP_PLL_CTL */
+/* ANALOGIX_DP_PLL_CTL */
 #define DP_PLL_PD				(0x1 << 7)
 #define DP_PLL_RESET				(0x1 << 6)
 #define DP_PLL_LOOP_BIT_DEFAULT			(0x1 << 4)
 #define DP_PLL_REF_BIT_1_1250V			(0x5 << 0)
 #define DP_PLL_REF_BIT_1_2500V			(0x7 << 0)
 
-/* EXYNOS_DP_PHY_PD */
+/* ANALOGIX_DP_PHY_PD */
 #define DP_PHY_PD				(0x1 << 5)
 #define AUX_PD					(0x1 << 4)
 #define CH3_PD					(0x1 << 3)
@@ -310,28 +310,28 @@ 
 #define CH1_PD					(0x1 << 1)
 #define CH0_PD					(0x1 << 0)
 
-/* EXYNOS_DP_PHY_TEST */
+/* ANALOGIX_DP_PHY_TEST */
 #define MACRO_RST				(0x1 << 5)
 #define CH1_TEST				(0x1 << 1)
 #define CH0_TEST				(0x1 << 0)
 
-/* EXYNOS_DP_AUX_CH_STA */
+/* ANALOGIX_DP_AUX_CH_STA */
 #define AUX_BUSY				(0x1 << 4)
 #define AUX_STATUS_MASK				(0xf << 0)
 
-/* EXYNOS_DP_AUX_CH_DEFER_CTL */
+/* ANALOGIX_DP_AUX_CH_DEFER_CTL */
 #define DEFER_CTRL_EN				(0x1 << 7)
 #define DEFER_COUNT(x)				(((x) & 0x7f) << 0)
 
-/* EXYNOS_DP_AUX_RX_COMM */
+/* ANALOGIX_DP_AUX_RX_COMM */
 #define AUX_RX_COMM_I2C_DEFER			(0x2 << 2)
 #define AUX_RX_COMM_AUX_DEFER			(0x2 << 0)
 
-/* EXYNOS_DP_BUFFER_DATA_CTL */
+/* ANALOGIX_DP_BUFFER_DATA_CTL */
 #define BUF_CLR					(0x1 << 7)
 #define BUF_DATA_COUNT(x)			(((x) & 0x1f) << 0)
 
-/* EXYNOS_DP_AUX_CH_CTL_1 */
+/* ANALOGIX_DP_AUX_CH_CTL_1 */
 #define AUX_LENGTH(x)				(((x - 1) & 0xf) << 4)
 #define AUX_TX_COMM_MASK			(0xf << 0)
 #define AUX_TX_COMM_DP_TRANSACTION		(0x1 << 3)
@@ -340,20 +340,20 @@ 
 #define AUX_TX_COMM_WRITE			(0x0 << 0)
 #define AUX_TX_COMM_READ			(0x1 << 0)
 
-/* EXYNOS_DP_AUX_ADDR_7_0 */
+/* ANALOGIX_DP_AUX_ADDR_7_0 */
 #define AUX_ADDR_7_0(x)				(((x) >> 0) & 0xff)
 
-/* EXYNOS_DP_AUX_ADDR_15_8 */
+/* ANALOGIX_DP_AUX_ADDR_15_8 */
 #define AUX_ADDR_15_8(x)			(((x) >> 8) & 0xff)
 
-/* EXYNOS_DP_AUX_ADDR_19_16 */
+/* ANALOGIX_DP_AUX_ADDR_19_16 */
 #define AUX_ADDR_19_16(x)			(((x) >> 16) & 0x0f)
 
-/* EXYNOS_DP_AUX_CH_CTL_2 */
+/* ANALOGIX_DP_AUX_CH_CTL_2 */
 #define ADDR_ONLY				(0x1 << 1)
 #define AUX_EN					(0x1 << 0)
 
-/* EXYNOS_DP_SOC_GENERAL_CTL */
+/* ANALOGIX_DP_SOC_GENERAL_CTL */
 #define AUDIO_MODE_SPDIF_MODE			(0x1 << 8)
 #define AUDIO_MODE_MASTER_MODE			(0x0 << 8)
 #define MASTER_VIDEO_INTERLACE_EN		(0x1 << 4)
@@ -363,4 +363,4 @@ 
 #define VIDEO_MODE_SLAVE_MODE			(0x1 << 0)
 #define VIDEO_MODE_MASTER_MODE			(0x0 << 0)
 
-#endif /* _EXYNOS_DP_REG_H */
+#endif /* _ANALOGIX_DP_REG_H */
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index bd1a415..5f74f80 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -55,8 +55,9 @@  config DRM_EXYNOS_DSI
 	  This enables support for Exynos MIPI-DSI device.
 
 config DRM_EXYNOS_DP
-	bool "EXYNOS DRM DP driver support"
+	bool "EXYNOS specific extensions for Analogix DP driver"
 	depends on DRM_EXYNOS && (DRM_EXYNOS_FIMD || DRM_EXYNOS7_DECON)
+	select DRM_ANALOGIX_DP
 	default DRM_EXYNOS
 	select DRM_PANEL
 	help
diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile
index 02aecfe..4453798 100644
--- a/drivers/gpu/drm/exynos/Makefile
+++ b/drivers/gpu/drm/exynos/Makefile
@@ -13,7 +13,7 @@  exynosdrm-$(CONFIG_DRM_EXYNOS5433_DECON)	+= exynos5433_drm_decon.o
 exynosdrm-$(CONFIG_DRM_EXYNOS7_DECON)	+= exynos7_drm_decon.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_DPI)	+= exynos_drm_dpi.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_DSI)	+= exynos_drm_dsi.o
-exynosdrm-$(CONFIG_DRM_EXYNOS_DP)	+= exynos_dp_core.o exynos_dp_reg.o
+exynosdrm-$(CONFIG_DRM_EXYNOS_DP)	+= exynos_dp.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI)	+= exynos_hdmi.o exynos_mixer.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_VIDI)	+= exynos_drm_vidi.o
 exynosdrm-$(CONFIG_DRM_EXYNOS_G2D)	+= exynos_drm_g2d.o
diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c
new file mode 100644
index 0000000..7e1be72
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_dp.c
@@ -0,0 +1,306 @@ 
+/*
+ * Samsung SoC DP (Display Port) interface driver.
+ *
+ * Copyright (C) 2012 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <[e-mail]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_graph.h>
+#include <video/of_display_timing.h>
+#include <video/of_videomode.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_crtc_helper.h>
+
+#include <drm/bridge/analogix_dp.h>
+#include <drm/exynos_drm.h>
+
+#include "exynos_drm_crtc.h"
+
+#define plat_data_to_dp(pd) \
+		container_of(pd, struct exynos_dp_device, plat_data)
+
+struct exynos_dp_device {
+	struct drm_encoder         encoder;
+	struct drm_bridge          *ptn_bridge;
+	struct drm_device          *drm_dev;
+	struct device              *dev;
+
+	struct exynos_drm_panel_info priv;
+	struct analogix_dp_plat_data plat_data;
+};
+
+int exynos_dp_crtc_clock_enable(struct analogix_dp_plat_data *plat_data,
+				bool enable)
+{
+	struct exynos_dp_device *dp = plat_data_to_dp(plat_data);
+	struct drm_encoder *encoder = &dp->encoder;
+	struct exynos_drm_crtc *crtc;
+
+	if (!encoder)
+		return -1;
+
+	crtc = to_exynos_crtc(encoder->crtc);
+	if (crtc && crtc->ops && crtc->ops->clock_enable)
+		crtc->ops->clock_enable(crtc, enable);
+
+	return 0;
+}
+
+static int exynos_dp_poweron(struct analogix_dp_plat_data *plat_data)
+{
+	return exynos_dp_crtc_clock_enable(plat_data, true);
+}
+
+static int exynos_dp_poweroff(struct analogix_dp_plat_data *plat_data)
+{
+	return exynos_dp_crtc_clock_enable(plat_data, false);
+}
+
+static int exynos_dp_get_modes(struct analogix_dp_plat_data *plat_data,
+			       struct drm_connector *connector)
+{
+	struct exynos_dp_device *dp = plat_data_to_dp(plat_data);
+	struct drm_display_mode *mode;
+
+	if (dp->plat_data.panel)
+		return 0;
+
+	mode = drm_mode_create(connector->dev);
+	if (!mode) {
+		DRM_ERROR("failed to create a new display mode.\n");
+		return 0;
+	}
+
+	drm_display_mode_from_videomode(&dp->priv.vm, mode);
+	mode->width_mm = dp->priv.width_mm;
+	mode->height_mm = dp->priv.height_mm;
+	connector->display_info.width_mm = mode->width_mm;
+	connector->display_info.height_mm = mode->height_mm;
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	return 1;
+}
+
+static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data,
+				   struct drm_bridge *bridge)
+{
+	struct exynos_dp_device *dp = plat_data_to_dp(plat_data);
+	struct drm_encoder *encoder = &dp->encoder;
+	int ret;
+
+	/* Pre-empt DP connector creation if there's a bridge */
+	if (dp->ptn_bridge) {
+		bridge->next = dp->ptn_bridge;
+		dp->ptn_bridge->encoder = encoder;
+		ret = drm_bridge_attach(encoder->dev, dp->ptn_bridge);
+		if (ret) {
+			DRM_ERROR("Failed to attach bridge to drm\n");
+			bridge->next = NULL;
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static bool exynos_dp_mode_fixup(struct drm_encoder *encoder,
+				 const struct drm_display_mode *mode,
+				 struct drm_display_mode *adjusted_mode)
+{
+	return true;
+}
+
+static void exynos_dp_mode_set(struct drm_encoder *encoder,
+			       struct drm_display_mode *mode,
+			       struct drm_display_mode *adjusted_mode)
+{
+}
+
+static void exynos_dp_enable(struct drm_encoder *encoder)
+{
+}
+
+static void exynos_dp_disable(struct drm_encoder *encoder)
+{
+}
+
+static struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
+	.mode_fixup = exynos_dp_mode_fixup,
+	.mode_set = exynos_dp_mode_set,
+	.enable = exynos_dp_enable,
+	.disable = exynos_dp_disable,
+};
+
+static struct drm_encoder_funcs exynos_dp_encoder_funcs = {
+	.destroy = drm_encoder_cleanup,
+};
+
+static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
+{
+	int ret;
+
+	ret = of_get_videomode(dp->dev->of_node, &dp->priv.vm,
+			       OF_USE_NATIVE_MODE);
+	if (ret) {
+		DRM_ERROR("failed: of_get_videomode() : %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
+{
+	struct exynos_dp_device *dp = dev_get_drvdata(dev);
+	struct drm_encoder *encoder = &dp->encoder;
+	struct drm_device *drm_dev = data;
+	int pipe, ret;
+
+	/*
+	 * Just like the probe function said, we don't need the
+	 * device drvrate anymore, we should leave the charge to
+	 * analogix dp driver, set the device drvdata to NULL.
+	 */
+	dev_set_drvdata(dev, NULL);
+
+	dp->dev = dev;
+	dp->drm_dev = drm_dev;
+
+	dp->plat_data.power_on = exynos_dp_poweron;
+	dp->plat_data.power_off = exynos_dp_poweroff;
+	dp->plat_data.get_modes = exynos_dp_get_modes;
+	dp->plat_data.attach = exynos_dp_bridge_attach;
+
+	if (!dp->plat_data.panel || !dp->ptn_bridge) {
+		ret = exynos_dp_dt_parse_panel(dp);
+		if (ret)
+			return ret;
+	}
+
+	pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev,
+						  EXYNOS_DISPLAY_TYPE_LCD);
+	if (pipe < 0)
+		return pipe;
+
+	encoder->possible_crtcs = 1 << pipe;
+
+	DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
+
+	drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
+			 DRM_MODE_ENCODER_TMDS);
+
+	drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
+
+	return analogix_dp_bind(dev, dp->drm_dev, encoder, &dp->plat_data);
+}
+
+static void exynos_dp_unbind(struct device *dev, struct device *master,
+			     void *data)
+{
+	return analogix_dp_unbind(dev, master, data);
+}
+
+static const struct component_ops exynos_dp_ops = {
+	.bind	= exynos_dp_bind,
+	.unbind	= exynos_dp_unbind,
+};
+
+static int exynos_dp_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *panel_node, *bridge_node, *endpoint;
+	struct exynos_dp_device *dp;
+
+	dp = devm_kzalloc(&pdev->dev, sizeof(struct exynos_dp_device),
+			  GFP_KERNEL);
+	if (!dp)
+		return -ENOMEM;
+
+	/*
+	 * We just use the drvdata until driver run into component
+	 * add function, and then we would set drvdata to null, so
+	 * that analogix dp driver would take charge of the drvdata.
+	 */
+	platform_set_drvdata(pdev, dp);
+
+	panel_node = of_parse_phandle(dev->of_node, "panel", 0);
+	if (panel_node) {
+		dp->plat_data.panel = of_drm_find_panel(panel_node);
+		of_node_put(panel_node);
+		if (!dp->plat_data.panel)
+			return -EPROBE_DEFER;
+	}
+
+	endpoint = of_graph_get_next_endpoint(dev->of_node, NULL);
+	if (endpoint) {
+		bridge_node = of_graph_get_remote_port_parent(endpoint);
+		if (bridge_node) {
+			dp->ptn_bridge = of_drm_find_bridge(bridge_node);
+			of_node_put(bridge_node);
+			if (!dp->ptn_bridge)
+				return -EPROBE_DEFER;
+		} else {
+			return -EPROBE_DEFER;
+		}
+	}
+
+	return component_add(&pdev->dev, &exynos_dp_ops);
+}
+
+static int exynos_dp_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &exynos_dp_ops);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int exynos_dp_suspend(struct device *dev)
+{
+	return analogix_dp_suspend(dev);
+}
+
+static int exynos_dp_resume(struct device *dev)
+{
+	return analogix_dp_resume(dev);
+}
+#endif
+
+static const struct dev_pm_ops exynos_dp_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(exynos_dp_suspend, exynos_dp_resume)
+};
+
+static const struct of_device_id exynos_dp_match[] = {
+	{ .compatible = "samsung,exynos5-dp" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, exynos_dp_match);
+
+struct platform_driver dp_driver = {
+	.probe		= exynos_dp_probe,
+	.remove		= exynos_dp_remove,
+	.driver		= {
+		.name	= "exynos-dp",
+		.owner	= THIS_MODULE,
+		.pm	= &exynos_dp_pm_ops,
+		.of_match_table = exynos_dp_match,
+	},
+};
+
+MODULE_AUTHOR("Jingoo Han <[e-mail]>");
+MODULE_DESCRIPTION("Samsung Specific Analogix-DP Driver Extension");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
deleted file mode 100644
index 7ff754f..0000000
--- a/drivers/gpu/drm/exynos/exynos_dp_core.h
+++ /dev/null
@@ -1,282 +0,0 @@ 
-/*
- * Header file for Samsung DP (Display Port) interface driver.
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#ifndef _EXYNOS_DP_CORE_H
-#define _EXYNOS_DP_CORE_H
-
-#include <drm/drm_crtc.h>
-#include <drm/drm_dp_helper.h>
-#include <drm/exynos_drm.h>
-
-#include "exynos_drm_drv.h"
-
-#define DP_TIMEOUT_LOOP_COUNT 100
-#define MAX_CR_LOOP 5
-#define MAX_EQ_LOOP 5
-
-enum link_rate_type {
-	LINK_RATE_1_62GBPS = 0x06,
-	LINK_RATE_2_70GBPS = 0x0a
-};
-
-enum link_lane_count_type {
-	LANE_COUNT1 = 1,
-	LANE_COUNT2 = 2,
-	LANE_COUNT4 = 4
-};
-
-enum link_training_state {
-	START,
-	CLOCK_RECOVERY,
-	EQUALIZER_TRAINING,
-	FINISHED,
-	FAILED
-};
-
-enum voltage_swing_level {
-	VOLTAGE_LEVEL_0,
-	VOLTAGE_LEVEL_1,
-	VOLTAGE_LEVEL_2,
-	VOLTAGE_LEVEL_3,
-};
-
-enum pre_emphasis_level {
-	PRE_EMPHASIS_LEVEL_0,
-	PRE_EMPHASIS_LEVEL_1,
-	PRE_EMPHASIS_LEVEL_2,
-	PRE_EMPHASIS_LEVEL_3,
-};
-
-enum pattern_set {
-	PRBS7,
-	D10_2,
-	TRAINING_PTN1,
-	TRAINING_PTN2,
-	DP_NONE
-};
-
-enum color_space {
-	COLOR_RGB,
-	COLOR_YCBCR422,
-	COLOR_YCBCR444
-};
-
-enum color_depth {
-	COLOR_6,
-	COLOR_8,
-	COLOR_10,
-	COLOR_12
-};
-
-enum color_coefficient {
-	COLOR_YCBCR601,
-	COLOR_YCBCR709
-};
-
-enum dynamic_range {
-	VESA,
-	CEA
-};
-
-enum pll_status {
-	PLL_UNLOCKED,
-	PLL_LOCKED
-};
-
-enum clock_recovery_m_value_type {
-	CALCULATED_M,
-	REGISTER_M
-};
-
-enum video_timing_recognition_type {
-	VIDEO_TIMING_FROM_CAPTURE,
-	VIDEO_TIMING_FROM_REGISTER
-};
-
-enum analog_power_block {
-	AUX_BLOCK,
-	CH0_BLOCK,
-	CH1_BLOCK,
-	CH2_BLOCK,
-	CH3_BLOCK,
-	ANALOG_TOTAL,
-	POWER_ALL
-};
-
-enum dp_irq_type {
-	DP_IRQ_TYPE_HP_CABLE_IN,
-	DP_IRQ_TYPE_HP_CABLE_OUT,
-	DP_IRQ_TYPE_HP_CHANGE,
-	DP_IRQ_TYPE_UNKNOWN,
-};
-
-struct video_info {
-	char *name;
-
-	bool h_sync_polarity;
-	bool v_sync_polarity;
-	bool interlaced;
-
-	enum color_space color_space;
-	enum dynamic_range dynamic_range;
-	enum color_coefficient ycbcr_coeff;
-	enum color_depth color_depth;
-
-	enum link_rate_type link_rate;
-	enum link_lane_count_type lane_count;
-};
-
-struct link_train {
-	int eq_loop;
-	int cr_loop[4];
-
-	u8 link_rate;
-	u8 lane_count;
-	u8 training_lane[4];
-
-	enum link_training_state lt_state;
-};
-
-struct exynos_dp_device {
-	struct drm_encoder	encoder;
-	struct device		*dev;
-	struct drm_device	*drm_dev;
-	struct drm_connector	connector;
-	struct drm_panel	*panel;
-	struct drm_bridge	*bridge;
-	struct drm_bridge	*ptn_bridge;
-	struct clk		*clock;
-	unsigned int		irq;
-	void __iomem		*reg_base;
-
-	struct video_info	*video_info;
-	struct link_train	link_train;
-	struct work_struct	hotplug_work;
-	struct phy		*phy;
-	int			dpms_mode;
-	int			hpd_gpio;
-
-	struct exynos_drm_panel_info priv;
-};
-
-/* exynos_dp_reg.c */
-void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_stop_video(struct exynos_dp_device *dp);
-void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_init_analog_param(struct exynos_dp_device *dp);
-void exynos_dp_init_interrupt(struct exynos_dp_device *dp);
-void exynos_dp_reset(struct exynos_dp_device *dp);
-void exynos_dp_swreset(struct exynos_dp_device *dp);
-void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
-enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
-void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
-				     enum analog_power_block block,
-				     bool enable);
-void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
-void exynos_dp_init_hpd(struct exynos_dp_device *dp);
-enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
-void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp);
-void exynos_dp_reset_aux(struct exynos_dp_device *dp);
-void exynos_dp_init_aux(struct exynos_dp_device *dp);
-int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
-void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
-int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
-int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
-				 unsigned int reg_addr,
-				 unsigned char data);
-int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
-				  unsigned int reg_addr,
-				  unsigned char *data);
-int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
-				  unsigned int reg_addr,
-				  unsigned int count,
-				  unsigned char data[]);
-int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
-				   unsigned int reg_addr,
-				   unsigned int count,
-				   unsigned char data[]);
-int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
-				unsigned int device_addr,
-				unsigned int reg_addr);
-int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
-				 unsigned int device_addr,
-				 unsigned int reg_addr,
-				 unsigned int *data);
-int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
-				  unsigned int device_addr,
-				  unsigned int reg_addr,
-				  unsigned int count,
-				  unsigned char edid[]);
-void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
-void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
-void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
-void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
-void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
-				    enum pattern_set pattern);
-void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
-void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane);
-void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane);
-void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane);
-void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane);
-u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
-u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
-u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
-u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp);
-void exynos_dp_reset_macro(struct exynos_dp_device *dp);
-void exynos_dp_init_video(struct exynos_dp_device *dp);
-
-void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
-int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
-void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
-			       enum clock_recovery_m_value_type type,
-			       u32 m_value,
-			       u32 n_value);
-void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
-void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
-void exynos_dp_start_video(struct exynos_dp_device *dp);
-int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp);
-void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp);
-void exynos_dp_enable_scrambling(struct exynos_dp_device *dp);
-void exynos_dp_disable_scrambling(struct exynos_dp_device *dp);
-
-/* I2C EDID Chip ID, Slave Address */
-#define I2C_EDID_DEVICE_ADDR			0x50
-#define I2C_E_EDID_DEVICE_ADDR			0x30
-
-#define EDID_BLOCK_LENGTH			0x80
-#define EDID_HEADER_PATTERN			0x00
-#define EDID_EXTENSION_FLAG			0x7e
-#define EDID_CHECKSUM				0x7f
-
-/* DP_MAX_LANE_COUNT */
-#define DPCD_ENHANCED_FRAME_CAP(x)		(((x) >> 7) & 0x1)
-#define DPCD_MAX_LANE_COUNT(x)			((x) & 0x1f)
-
-/* DP_LANE_COUNT_SET */
-#define DPCD_LANE_COUNT_SET(x)			((x) & 0x1f)
-
-/* DP_TRAINING_LANE0_SET */
-#define DPCD_PRE_EMPHASIS_SET(x)		(((x) & 0x3) << 3)
-#define DPCD_PRE_EMPHASIS_GET(x)		(((x) >> 3) & 0x3)
-#define DPCD_VOLTAGE_SWING_SET(x)		(((x) & 0x3) << 0)
-#define DPCD_VOLTAGE_SWING_GET(x)		(((x) >> 0) & 0x3)
-
-#endif /* _EXYNOS_DP_CORE_H */
diff --git a/drivers/gpu/drm/exynos/exynos_dp_reg.c b/drivers/gpu/drm/exynos/exynos_dp_reg.c
deleted file mode 100644
index 5aff19a..0000000
--- a/drivers/gpu/drm/exynos/exynos_dp_reg.c
+++ /dev/null
@@ -1,1259 +0,0 @@ 
-/*
- * Samsung DP (Display port) register interface driver.
- *
- * Copyright (C) 2012 Samsung Electronics Co., Ltd.
- * Author: Jingoo Han <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/gpio.h>
-
-#include "exynos_dp_core.h"
-#include "exynos_dp_reg.h"
-
-#define COMMON_INT_MASK_1	0
-#define COMMON_INT_MASK_2	0
-#define COMMON_INT_MASK_3	0
-#define COMMON_INT_MASK_4	(HOTPLUG_CHG | HPD_LOST | PLUG)
-#define INT_STA_MASK		INT_HPD
-
-void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable)
-{
-	u32 reg;
-
-	if (enable) {
-		reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-		reg |= HDCP_VIDEO_MUTE;
-		writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-	} else {
-		reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-		reg &= ~HDCP_VIDEO_MUTE;
-		writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-	}
-}
-
-void exynos_dp_stop_video(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-	reg &= ~VIDEO_EN;
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-}
-
-void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable)
-{
-	u32 reg;
-
-	if (enable)
-		reg = LANE3_MAP_LOGIC_LANE_0 | LANE2_MAP_LOGIC_LANE_1 |
-			LANE1_MAP_LOGIC_LANE_2 | LANE0_MAP_LOGIC_LANE_3;
-	else
-		reg = LANE3_MAP_LOGIC_LANE_3 | LANE2_MAP_LOGIC_LANE_2 |
-			LANE1_MAP_LOGIC_LANE_1 | LANE0_MAP_LOGIC_LANE_0;
-
-	writel(reg, dp->reg_base + EXYNOS_DP_LANE_MAP);
-}
-
-void exynos_dp_init_analog_param(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = TX_TERMINAL_CTRL_50_OHM;
-	writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_1);
-
-	reg = SEL_24M | TX_DVDD_BIT_1_0625V;
-	writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_2);
-
-	reg = DRIVE_DVDD_BIT_1_0625V | VCO_BIT_600_MICRO;
-	writel(reg, dp->reg_base + EXYNOS_DP_ANALOG_CTL_3);
-
-	reg = PD_RING_OSC | AUX_TERMINAL_CTRL_50_OHM |
-		TX_CUR1_2X | TX_CUR_16_MA;
-	writel(reg, dp->reg_base + EXYNOS_DP_PLL_FILTER_CTL_1);
-
-	reg = CH3_AMP_400_MV | CH2_AMP_400_MV |
-		CH1_AMP_400_MV | CH0_AMP_400_MV;
-	writel(reg, dp->reg_base + EXYNOS_DP_TX_AMP_TUNING_CTL);
-}
-
-void exynos_dp_init_interrupt(struct exynos_dp_device *dp)
-{
-	/* Set interrupt pin assertion polarity as high */
-	writel(INT_POL1 | INT_POL0, dp->reg_base + EXYNOS_DP_INT_CTL);
-
-	/* Clear pending regisers */
-	writel(0xff, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1);
-	writel(0x4f, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_2);
-	writel(0xe0, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_3);
-	writel(0xe7, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4);
-	writel(0x63, dp->reg_base + EXYNOS_DP_INT_STA);
-
-	/* 0:mask,1: unmask */
-	writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_1);
-	writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_2);
-	writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_3);
-	writel(0x00, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_4);
-	writel(0x00, dp->reg_base + EXYNOS_DP_INT_STA_MASK);
-}
-
-void exynos_dp_reset(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	exynos_dp_stop_video(dp);
-	exynos_dp_enable_video_mute(dp, 0);
-
-	reg = MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N |
-		AUD_FIFO_FUNC_EN_N | AUD_FUNC_EN_N |
-		HDCP_FUNC_EN_N | SW_FUNC_EN_N;
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-
-	reg = SSC_FUNC_EN_N | AUX_FUNC_EN_N |
-		SERDES_FIFO_FUNC_EN_N |
-		LS_CLK_DOMAIN_FUNC_EN_N;
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-
-	usleep_range(20, 30);
-
-	exynos_dp_lane_swap(dp, 0);
-
-	writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-	writel(0x40, dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-	writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-	writel(0x0, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-
-	writel(0x0, dp->reg_base + EXYNOS_DP_PKT_SEND_CTL);
-	writel(0x0, dp->reg_base + EXYNOS_DP_HDCP_CTL);
-
-	writel(0x5e, dp->reg_base + EXYNOS_DP_HPD_DEGLITCH_L);
-	writel(0x1a, dp->reg_base + EXYNOS_DP_HPD_DEGLITCH_H);
-
-	writel(0x10, dp->reg_base + EXYNOS_DP_LINK_DEBUG_CTL);
-
-	writel(0x0, dp->reg_base + EXYNOS_DP_PHY_TEST);
-
-	writel(0x0, dp->reg_base + EXYNOS_DP_VIDEO_FIFO_THRD);
-	writel(0x20, dp->reg_base + EXYNOS_DP_AUDIO_MARGIN);
-
-	writel(0x4, dp->reg_base + EXYNOS_DP_M_VID_GEN_FILTER_TH);
-	writel(0x2, dp->reg_base + EXYNOS_DP_M_AUD_GEN_FILTER_TH);
-
-	writel(0x00000101, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-}
-
-void exynos_dp_swreset(struct exynos_dp_device *dp)
-{
-	writel(RESET_DP_TX, dp->reg_base + EXYNOS_DP_TX_SW_RESET);
-}
-
-void exynos_dp_config_interrupt(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	/* 0: mask, 1: unmask */
-	reg = COMMON_INT_MASK_1;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_1);
-
-	reg = COMMON_INT_MASK_2;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_2);
-
-	reg = COMMON_INT_MASK_3;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_3);
-
-	reg = COMMON_INT_MASK_4;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_MASK_4);
-
-	reg = INT_STA_MASK;
-	writel(reg, dp->reg_base + EXYNOS_DP_INT_STA_MASK);
-}
-
-enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_DEBUG_CTL);
-	if (reg & PLL_LOCK)
-		return PLL_LOCKED;
-	else
-		return PLL_UNLOCKED;
-}
-
-void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable)
-{
-	u32 reg;
-
-	if (enable) {
-		reg = readl(dp->reg_base + EXYNOS_DP_PLL_CTL);
-		reg |= DP_PLL_PD;
-		writel(reg, dp->reg_base + EXYNOS_DP_PLL_CTL);
-	} else {
-		reg = readl(dp->reg_base + EXYNOS_DP_PLL_CTL);
-		reg &= ~DP_PLL_PD;
-		writel(reg, dp->reg_base + EXYNOS_DP_PLL_CTL);
-	}
-}
-
-void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
-				     enum analog_power_block block,
-				     bool enable)
-{
-	u32 reg;
-
-	switch (block) {
-	case AUX_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg |= AUX_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg &= ~AUX_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	case CH0_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg |= CH0_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg &= ~CH0_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	case CH1_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg |= CH1_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg &= ~CH1_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	case CH2_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg |= CH2_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg &= ~CH2_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	case CH3_BLOCK:
-		if (enable) {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg |= CH3_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg &= ~CH3_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	case ANALOG_TOTAL:
-		if (enable) {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg |= DP_PHY_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			reg = readl(dp->reg_base + EXYNOS_DP_PHY_PD);
-			reg &= ~DP_PHY_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	case POWER_ALL:
-		if (enable) {
-			reg = DP_PHY_PD | AUX_PD | CH3_PD | CH2_PD |
-				CH1_PD | CH0_PD;
-			writel(reg, dp->reg_base + EXYNOS_DP_PHY_PD);
-		} else {
-			writel(0x00, dp->reg_base + EXYNOS_DP_PHY_PD);
-		}
-		break;
-	default:
-		break;
-	}
-}
-
-void exynos_dp_init_analog_func(struct exynos_dp_device *dp)
-{
-	u32 reg;
-	int timeout_loop = 0;
-
-	exynos_dp_set_analog_power_down(dp, POWER_ALL, 0);
-
-	reg = PLL_LOCK_CHG;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_DEBUG_CTL);
-	reg &= ~(F_PLL_LOCK | PLL_LOCK_CTRL);
-	writel(reg, dp->reg_base + EXYNOS_DP_DEBUG_CTL);
-
-	/* Power up PLL */
-	if (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
-		exynos_dp_set_pll_power_down(dp, 0);
-
-		while (exynos_dp_get_pll_lock_status(dp) == PLL_UNLOCKED) {
-			timeout_loop++;
-			if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
-				dev_err(dp->dev, "failed to get pll lock status\n");
-				return;
-			}
-			usleep_range(10, 20);
-		}
-	}
-
-	/* Enable Serdes FIFO function and Link symbol clock domain module */
-	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-	reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
-		| AUX_FUNC_EN_N);
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-}
-
-void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	if (gpio_is_valid(dp->hpd_gpio))
-		return;
-
-	reg = HOTPLUG_CHG | HPD_LOST | PLUG;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4);
-
-	reg = INT_HPD;
-	writel(reg, dp->reg_base + EXYNOS_DP_INT_STA);
-}
-
-void exynos_dp_init_hpd(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	if (gpio_is_valid(dp->hpd_gpio))
-		return;
-
-	exynos_dp_clear_hotplug_interrupts(dp);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-	reg &= ~(F_HPD | HPD_CTRL);
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-}
-
-enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	if (gpio_is_valid(dp->hpd_gpio)) {
-		reg = gpio_get_value(dp->hpd_gpio);
-		if (reg)
-			return DP_IRQ_TYPE_HP_CABLE_IN;
-		else
-			return DP_IRQ_TYPE_HP_CABLE_OUT;
-	} else {
-		/* Parse hotplug interrupt status register */
-		reg = readl(dp->reg_base + EXYNOS_DP_COMMON_INT_STA_4);
-
-		if (reg & PLUG)
-			return DP_IRQ_TYPE_HP_CABLE_IN;
-
-		if (reg & HPD_LOST)
-			return DP_IRQ_TYPE_HP_CABLE_OUT;
-
-		if (reg & HOTPLUG_CHG)
-			return DP_IRQ_TYPE_HP_CHANGE;
-
-		return DP_IRQ_TYPE_UNKNOWN;
-	}
-}
-
-void exynos_dp_reset_aux(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	/* Disable AUX channel module */
-	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-	reg |= AUX_FUNC_EN_N;
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-}
-
-void exynos_dp_init_aux(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	/* Clear inerrupts related to AUX channel */
-	reg = RPLY_RECEIV | AUX_ERR;
-	writel(reg, dp->reg_base + EXYNOS_DP_INT_STA);
-
-	exynos_dp_reset_aux(dp);
-
-	/* Disable AUX transaction H/W retry */
-	reg = AUX_BIT_PERIOD_EXPECTED_DELAY(3) | AUX_HW_RETRY_COUNT_SEL(0) |
-	      AUX_HW_RETRY_INTERVAL_600_MICROSECONDS;
-	writel(reg, dp->reg_base + EXYNOS_DP_AUX_HW_RETRY_CTL);
-
-	/* Receive AUX Channel DEFER commands equal to DEFFER_COUNT*64 */
-	reg = DEFER_CTRL_EN | DEFER_COUNT(1);
-	writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_DEFER_CTL);
-
-	/* Enable AUX channel module */
-	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-	reg &= ~AUX_FUNC_EN_N;
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_2);
-}
-
-int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	if (gpio_is_valid(dp->hpd_gpio)) {
-		if (gpio_get_value(dp->hpd_gpio))
-			return 0;
-	} else {
-		reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-		if (reg & HPD_STATUS)
-			return 0;
-	}
-
-	return -EINVAL;
-}
-
-void exynos_dp_enable_sw_function(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-	reg &= ~SW_FUNC_EN_N;
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-}
-
-int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp)
-{
-	int reg;
-	int retval = 0;
-	int timeout_loop = 0;
-
-	/* Enable AUX CH operation */
-	reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
-	reg |= AUX_EN;
-	writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
-
-	/* Is AUX CH command reply received? */
-	reg = readl(dp->reg_base + EXYNOS_DP_INT_STA);
-	while (!(reg & RPLY_RECEIV)) {
-		timeout_loop++;
-		if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
-			dev_err(dp->dev, "AUX CH command reply failed!\n");
-			return -ETIMEDOUT;
-		}
-		reg = readl(dp->reg_base + EXYNOS_DP_INT_STA);
-		usleep_range(10, 11);
-	}
-
-	/* Clear interrupt source for AUX CH command reply */
-	writel(RPLY_RECEIV, dp->reg_base + EXYNOS_DP_INT_STA);
-
-	/* Clear interrupt source for AUX CH access error */
-	reg = readl(dp->reg_base + EXYNOS_DP_INT_STA);
-	if (reg & AUX_ERR) {
-		writel(AUX_ERR, dp->reg_base + EXYNOS_DP_INT_STA);
-		return -EREMOTEIO;
-	}
-
-	/* Check AUX CH error access status */
-	reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_STA);
-	if ((reg & AUX_STATUS_MASK) != 0) {
-		dev_err(dp->dev, "AUX CH error happens: %d\n\n",
-			reg & AUX_STATUS_MASK);
-		return -EREMOTEIO;
-	}
-
-	return retval;
-}
-
-int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
-				 unsigned int reg_addr,
-				 unsigned char data)
-{
-	u32 reg;
-	int i;
-	int retval;
-
-	for (i = 0; i < 3; i++) {
-		/* Clear AUX CH data buffer */
-		reg = BUF_CLR;
-		writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
-		/* Select DPCD device address */
-		reg = AUX_ADDR_7_0(reg_addr);
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
-		reg = AUX_ADDR_15_8(reg_addr);
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
-		reg = AUX_ADDR_19_16(reg_addr);
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
-		/* Write data buffer */
-		reg = (unsigned int)data;
-		writel(reg, dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-
-		/*
-		 * Set DisplayPort transaction and write 1 byte
-		 * If bit 3 is 1, DisplayPort transaction.
-		 * If Bit 3 is 0, I2C transaction.
-		 */
-		reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
-		/* Start AUX transaction */
-		retval = exynos_dp_start_aux_transaction(dp);
-		if (retval == 0)
-			break;
-
-		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
-	}
-
-	return retval;
-}
-
-int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
-				  unsigned int reg_addr,
-				  unsigned char *data)
-{
-	u32 reg;
-	int i;
-	int retval;
-
-	for (i = 0; i < 3; i++) {
-		/* Clear AUX CH data buffer */
-		reg = BUF_CLR;
-		writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
-		/* Select DPCD device address */
-		reg = AUX_ADDR_7_0(reg_addr);
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
-		reg = AUX_ADDR_15_8(reg_addr);
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
-		reg = AUX_ADDR_19_16(reg_addr);
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
-		/*
-		 * Set DisplayPort transaction and read 1 byte
-		 * If bit 3 is 1, DisplayPort transaction.
-		 * If Bit 3 is 0, I2C transaction.
-		 */
-		reg = AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
-		/* Start AUX transaction */
-		retval = exynos_dp_start_aux_transaction(dp);
-		if (retval == 0)
-			break;
-
-		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
-	}
-
-	/* Read data buffer */
-	reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-	*data = (unsigned char)(reg & 0xff);
-
-	return retval;
-}
-
-int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
-				  unsigned int reg_addr,
-				  unsigned int count,
-				  unsigned char data[])
-{
-	u32 reg;
-	unsigned int start_offset;
-	unsigned int cur_data_count;
-	unsigned int cur_data_idx;
-	int i;
-	int retval = 0;
-
-	/* Clear AUX CH data buffer */
-	reg = BUF_CLR;
-	writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
-	start_offset = 0;
-	while (start_offset < count) {
-		/* Buffer size of AUX CH is 16 * 4bytes */
-		if ((count - start_offset) > 16)
-			cur_data_count = 16;
-		else
-			cur_data_count = count - start_offset;
-
-		for (i = 0; i < 3; i++) {
-			/* Select DPCD device address */
-			reg = AUX_ADDR_7_0(reg_addr + start_offset);
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
-			reg = AUX_ADDR_15_8(reg_addr + start_offset);
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
-			reg = AUX_ADDR_19_16(reg_addr + start_offset);
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
-			for (cur_data_idx = 0; cur_data_idx < cur_data_count;
-			     cur_data_idx++) {
-				reg = data[start_offset + cur_data_idx];
-				writel(reg, dp->reg_base + EXYNOS_DP_BUF_DATA_0
-							  + 4 * cur_data_idx);
-			}
-
-			/*
-			 * Set DisplayPort transaction and write
-			 * If bit 3 is 1, DisplayPort transaction.
-			 * If Bit 3 is 0, I2C transaction.
-			 */
-			reg = AUX_LENGTH(cur_data_count) |
-				AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_WRITE;
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
-			/* Start AUX transaction */
-			retval = exynos_dp_start_aux_transaction(dp);
-			if (retval == 0)
-				break;
-
-			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-				__func__);
-		}
-
-		start_offset += cur_data_count;
-	}
-
-	return retval;
-}
-
-int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
-				   unsigned int reg_addr,
-				   unsigned int count,
-				   unsigned char data[])
-{
-	u32 reg;
-	unsigned int start_offset;
-	unsigned int cur_data_count;
-	unsigned int cur_data_idx;
-	int i;
-	int retval = 0;
-
-	/* Clear AUX CH data buffer */
-	reg = BUF_CLR;
-	writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
-	start_offset = 0;
-	while (start_offset < count) {
-		/* Buffer size of AUX CH is 16 * 4bytes */
-		if ((count - start_offset) > 16)
-			cur_data_count = 16;
-		else
-			cur_data_count = count - start_offset;
-
-		/* AUX CH Request Transaction process */
-		for (i = 0; i < 3; i++) {
-			/* Select DPCD device address */
-			reg = AUX_ADDR_7_0(reg_addr + start_offset);
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
-			reg = AUX_ADDR_15_8(reg_addr + start_offset);
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
-			reg = AUX_ADDR_19_16(reg_addr + start_offset);
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
-			/*
-			 * Set DisplayPort transaction and read
-			 * If bit 3 is 1, DisplayPort transaction.
-			 * If Bit 3 is 0, I2C transaction.
-			 */
-			reg = AUX_LENGTH(cur_data_count) |
-				AUX_TX_COMM_DP_TRANSACTION | AUX_TX_COMM_READ;
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
-			/* Start AUX transaction */
-			retval = exynos_dp_start_aux_transaction(dp);
-			if (retval == 0)
-				break;
-
-			dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-				__func__);
-		}
-
-		for (cur_data_idx = 0; cur_data_idx < cur_data_count;
-		    cur_data_idx++) {
-			reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0
-						 + 4 * cur_data_idx);
-			data[start_offset + cur_data_idx] =
-				(unsigned char)reg;
-		}
-
-		start_offset += cur_data_count;
-	}
-
-	return retval;
-}
-
-int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
-				unsigned int device_addr,
-				unsigned int reg_addr)
-{
-	u32 reg;
-	int retval;
-
-	/* Set EDID device address */
-	reg = device_addr;
-	writel(reg, dp->reg_base + EXYNOS_DP_AUX_ADDR_7_0);
-	writel(0x0, dp->reg_base + EXYNOS_DP_AUX_ADDR_15_8);
-	writel(0x0, dp->reg_base + EXYNOS_DP_AUX_ADDR_19_16);
-
-	/* Set offset from base address of EDID device */
-	writel(reg_addr, dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-
-	/*
-	 * Set I2C transaction and write address
-	 * If bit 3 is 1, DisplayPort transaction.
-	 * If Bit 3 is 0, I2C transaction.
-	 */
-	reg = AUX_TX_COMM_I2C_TRANSACTION | AUX_TX_COMM_MOT |
-		AUX_TX_COMM_WRITE;
-	writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
-	/* Start AUX transaction */
-	retval = exynos_dp_start_aux_transaction(dp);
-	if (retval != 0)
-		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
-
-	return retval;
-}
-
-int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
-				 unsigned int device_addr,
-				 unsigned int reg_addr,
-				 unsigned int *data)
-{
-	u32 reg;
-	int i;
-	int retval;
-
-	for (i = 0; i < 3; i++) {
-		/* Clear AUX CH data buffer */
-		reg = BUF_CLR;
-		writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
-		/* Select EDID device */
-		retval = exynos_dp_select_i2c_device(dp, device_addr, reg_addr);
-		if (retval != 0)
-			continue;
-
-		/*
-		 * Set I2C transaction and read data
-		 * If bit 3 is 1, DisplayPort transaction.
-		 * If Bit 3 is 0, I2C transaction.
-		 */
-		reg = AUX_TX_COMM_I2C_TRANSACTION |
-			AUX_TX_COMM_READ;
-		writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_1);
-
-		/* Start AUX transaction */
-		retval = exynos_dp_start_aux_transaction(dp);
-		if (retval == 0)
-			break;
-
-		dev_dbg(dp->dev, "%s: Aux Transaction fail!\n", __func__);
-	}
-
-	/* Read data */
-	if (retval == 0)
-		*data = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0);
-
-	return retval;
-}
-
-int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
-				  unsigned int device_addr,
-				  unsigned int reg_addr,
-				  unsigned int count,
-				  unsigned char edid[])
-{
-	u32 reg;
-	unsigned int i, j;
-	unsigned int cur_data_idx;
-	unsigned int defer = 0;
-	int retval = 0;
-
-	for (i = 0; i < count; i += 16) {
-		for (j = 0; j < 3; j++) {
-			/* Clear AUX CH data buffer */
-			reg = BUF_CLR;
-			writel(reg, dp->reg_base + EXYNOS_DP_BUFFER_DATA_CTL);
-
-			/* Set normal AUX CH command */
-			reg = readl(dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
-			reg &= ~ADDR_ONLY;
-			writel(reg, dp->reg_base + EXYNOS_DP_AUX_CH_CTL_2);
-
-			/*
-			 * If Rx sends defer, Tx sends only reads
-			 * request without sending address
-			 */
-			if (!defer)
-				retval = exynos_dp_select_i2c_device(
-						dp, device_addr, reg_addr + i);
-			else
-				defer = 0;
-
-			if (retval == 0) {
-				/*
-				 * Set I2C transaction and write data
-				 * If bit 3 is 1, DisplayPort transaction.
-				 * If Bit 3 is 0, I2C transaction.
-				 */
-				reg = AUX_LENGTH(16) |
-				      AUX_TX_COMM_I2C_TRANSACTION |
-				      AUX_TX_COMM_READ;
-				writel(reg, dp->reg_base +
-				       EXYNOS_DP_AUX_CH_CTL_1);
-
-				/* Start AUX transaction */
-				retval = exynos_dp_start_aux_transaction(dp);
-				if (retval == 0)
-					break;
-
-				dev_dbg(dp->dev, "%s: Aux Transaction fail!\n",
-					__func__);
-			}
-			/* Check if Rx sends defer */
-			reg = readl(dp->reg_base + EXYNOS_DP_AUX_RX_COMM);
-			if (reg == AUX_RX_COMM_AUX_DEFER ||
-			    reg == AUX_RX_COMM_I2C_DEFER) {
-				dev_err(dp->dev, "Defer: %d\n\n", reg);
-				defer = 1;
-			}
-		}
-
-		for (cur_data_idx = 0; cur_data_idx < 16; cur_data_idx++) {
-			reg = readl(dp->reg_base + EXYNOS_DP_BUF_DATA_0
-						 + 4 * cur_data_idx);
-			edid[i + cur_data_idx] = (unsigned char)reg;
-		}
-	}
-
-	return retval;
-}
-
-void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype)
-{
-	u32 reg;
-
-	reg = bwtype;
-	if ((bwtype == LINK_RATE_2_70GBPS) || (bwtype == LINK_RATE_1_62GBPS))
-		writel(reg, dp->reg_base + EXYNOS_DP_LINK_BW_SET);
-}
-
-void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LINK_BW_SET);
-	*bwtype = reg;
-}
-
-void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count)
-{
-	u32 reg;
-
-	reg = count;
-	writel(reg, dp->reg_base + EXYNOS_DP_LANE_COUNT_SET);
-}
-
-void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LANE_COUNT_SET);
-	*count = reg;
-}
-
-void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable)
-{
-	u32 reg;
-
-	if (enable) {
-		reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-		reg |= ENHANCED;
-		writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-	} else {
-		reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-		reg &= ~ENHANCED;
-		writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-	}
-}
-
-void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
-				    enum pattern_set pattern)
-{
-	u32 reg;
-
-	switch (pattern) {
-	case PRBS7:
-		reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_PRBS7;
-		writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-		break;
-	case D10_2:
-		reg = SCRAMBLING_ENABLE | LINK_QUAL_PATTERN_SET_D10_2;
-		writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-		break;
-	case TRAINING_PTN1:
-		reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN1;
-		writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-		break;
-	case TRAINING_PTN2:
-		reg = SCRAMBLING_DISABLE | SW_TRAINING_PATTERN_SET_PTN2;
-		writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-		break;
-	case DP_NONE:
-		reg = SCRAMBLING_ENABLE |
-			LINK_QUAL_PATTERN_SET_DISABLE |
-			SW_TRAINING_PATTERN_SET_NORMAL;
-		writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-		break;
-	default:
-		break;
-	}
-}
-
-void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
-	reg &= ~PRE_EMPHASIS_SET_MASK;
-	reg |= level << PRE_EMPHASIS_SET_SHIFT;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
-	reg &= ~PRE_EMPHASIS_SET_MASK;
-	reg |= level << PRE_EMPHASIS_SET_SHIFT;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
-	reg &= ~PRE_EMPHASIS_SET_MASK;
-	reg |= level << PRE_EMPHASIS_SET_SHIFT;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
-	reg &= ~PRE_EMPHASIS_SET_MASK;
-	reg |= level << PRE_EMPHASIS_SET_SHIFT;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane)
-{
-	u32 reg;
-
-	reg = training_lane;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane)
-{
-	u32 reg;
-
-	reg = training_lane;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane)
-{
-	u32 reg;
-
-	reg = training_lane;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
-}
-
-void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
-				       u32 training_lane)
-{
-	u32 reg;
-
-	reg = training_lane;
-	writel(reg, dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
-}
-
-u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN0_LINK_TRAINING_CTL);
-	return reg;
-}
-
-u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN1_LINK_TRAINING_CTL);
-	return reg;
-}
-
-u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN2_LINK_TRAINING_CTL);
-	return reg;
-}
-
-u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_LN3_LINK_TRAINING_CTL);
-	return reg;
-}
-
-void exynos_dp_reset_macro(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_PHY_TEST);
-	reg |= MACRO_RST;
-	writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST);
-
-	/* 10 us is the minimum reset time. */
-	usleep_range(10, 20);
-
-	reg &= ~MACRO_RST;
-	writel(reg, dp->reg_base + EXYNOS_DP_PHY_TEST);
-}
-
-void exynos_dp_init_video(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = VSYNC_DET | VID_FORMAT_CHG | VID_CLK_CHG;
-	writel(reg, dp->reg_base + EXYNOS_DP_COMMON_INT_STA_1);
-
-	reg = 0x0;
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-
-	reg = CHA_CRI(4) | CHA_CTRL;
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-
-	reg = 0x0;
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-
-	reg = VID_HRES_TH(2) | VID_VRES_TH(0);
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_8);
-}
-
-void exynos_dp_set_video_color_format(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	/* Configure the input color depth, color space, dynamic range */
-	reg = (dp->video_info->dynamic_range << IN_D_RANGE_SHIFT) |
-		(dp->video_info->color_depth << IN_BPC_SHIFT) |
-		(dp->video_info->color_space << IN_COLOR_F_SHIFT);
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_2);
-
-	/* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */
-	reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_3);
-	reg &= ~IN_YC_COEFFI_MASK;
-	if (dp->video_info->ycbcr_coeff)
-		reg |= IN_YC_COEFFI_ITU709;
-	else
-		reg |= IN_YC_COEFFI_ITU601;
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_3);
-}
-
-int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_1);
-
-	if (!(reg & DET_STA)) {
-		dev_dbg(dp->dev, "Input stream clock not detected.\n");
-		return -EINVAL;
-	}
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_2);
-	dev_dbg(dp->dev, "wait SYS_CTL_2.\n");
-
-	if (reg & CHA_STA) {
-		dev_dbg(dp->dev, "Input stream clk is changing\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
-			       enum clock_recovery_m_value_type type,
-			       u32 m_value,
-			       u32 n_value)
-{
-	u32 reg;
-
-	if (type == REGISTER_M) {
-		reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-		reg |= FIX_M_VID;
-		writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-		reg = m_value & 0xff;
-		writel(reg, dp->reg_base + EXYNOS_DP_M_VID_0);
-		reg = (m_value >> 8) & 0xff;
-		writel(reg, dp->reg_base + EXYNOS_DP_M_VID_1);
-		reg = (m_value >> 16) & 0xff;
-		writel(reg, dp->reg_base + EXYNOS_DP_M_VID_2);
-
-		reg = n_value & 0xff;
-		writel(reg, dp->reg_base + EXYNOS_DP_N_VID_0);
-		reg = (n_value >> 8) & 0xff;
-		writel(reg, dp->reg_base + EXYNOS_DP_N_VID_1);
-		reg = (n_value >> 16) & 0xff;
-		writel(reg, dp->reg_base + EXYNOS_DP_N_VID_2);
-	} else  {
-		reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-		reg &= ~FIX_M_VID;
-		writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_4);
-
-		writel(0x00, dp->reg_base + EXYNOS_DP_N_VID_0);
-		writel(0x80, dp->reg_base + EXYNOS_DP_N_VID_1);
-		writel(0x00, dp->reg_base + EXYNOS_DP_N_VID_2);
-	}
-}
-
-void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type)
-{
-	u32 reg;
-
-	if (type == VIDEO_TIMING_FROM_CAPTURE) {
-		reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-		reg &= ~FORMAT_SEL;
-		writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-	} else {
-		reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-		reg |= FORMAT_SEL;
-		writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-	}
-}
-
-void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable)
-{
-	u32 reg;
-
-	if (enable) {
-		reg = readl(dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-		reg &= ~VIDEO_MODE_MASK;
-		reg |= VIDEO_MASTER_MODE_EN | VIDEO_MODE_MASTER_MODE;
-		writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-	} else {
-		reg = readl(dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-		reg &= ~VIDEO_MODE_MASK;
-		reg |= VIDEO_MODE_SLAVE_MODE;
-		writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-	}
-}
-
-void exynos_dp_start_video(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-	reg |= VIDEO_EN;
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_1);
-}
-
-int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-	writel(reg, dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_SYS_CTL_3);
-	if (!(reg & STRM_VALID)) {
-		dev_dbg(dp->dev, "Input video stream is not detected.\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-	reg &= ~(MASTER_VID_FUNC_EN_N | SLAVE_VID_FUNC_EN_N);
-	reg |= MASTER_VID_FUNC_EN_N;
-	writel(reg, dp->reg_base + EXYNOS_DP_FUNC_EN_1);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-	reg &= ~INTERACE_SCAN_CFG;
-	reg |= (dp->video_info->interlaced << 2);
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-	reg &= ~VSYNC_POLARITY_CFG;
-	reg |= (dp->video_info->v_sync_polarity << 1);
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-
-	reg = readl(dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-	reg &= ~HSYNC_POLARITY_CFG;
-	reg |= (dp->video_info->h_sync_polarity << 0);
-	writel(reg, dp->reg_base + EXYNOS_DP_VIDEO_CTL_10);
-
-	reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE;
-	writel(reg, dp->reg_base + EXYNOS_DP_SOC_GENERAL_CTL);
-}
-
-void exynos_dp_enable_scrambling(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-	reg &= ~SCRAMBLING_DISABLE;
-	writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-}
-
-void exynos_dp_disable_scrambling(struct exynos_dp_device *dp)
-{
-	u32 reg;
-
-	reg = readl(dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-	reg |= SCRAMBLING_DISABLE;
-	writel(reg, dp->reg_base + EXYNOS_DP_TRAINING_PTN_SET);
-}
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
new file mode 100644
index 0000000..8b4ffad
--- /dev/null
+++ b/include/drm/bridge/analogix_dp.h
@@ -0,0 +1,24 @@ 
+#ifndef _ANALOGIX_DP_H_
+#define _ANALOGIX_DP_H_
+
+#include <drm/drm_crtc.h>
+
+struct analogix_dp_plat_data {
+	struct drm_panel *panel;
+
+	int (*power_on)(struct analogix_dp_plat_data *);
+	int (*power_off)(struct analogix_dp_plat_data *);
+	int (*attach)(struct analogix_dp_plat_data *, struct drm_bridge *);
+	int (*get_modes)(struct analogix_dp_plat_data *,
+			 struct drm_connector *);
+};
+
+int analogix_dp_resume(struct device *dev);
+int analogix_dp_suspend(struct device *dev);
+
+int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev,
+		     struct drm_encoder *encoder,
+		     struct analogix_dp_plat_data *plat_data);
+void analogix_dp_unbind(struct device *dev, struct device *master, void *data);
+
+#endif /* _ANALOGIX_DP_H_ */