[v4,4/4] drm/rockchip: analogix_dp: implement PSR function
diff mbox

Message ID 1468469758-12722-1-git-send-email-ykk@rock-chips.com
State New
Headers show

Commit Message

Yakir Yang July 14, 2016, 4:15 a.m. UTC
Alway enable the PSR function for Rockchip analogix_dp driver. If panel
don't support PSR, then the core analogix_dp would ignore this setting.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v4:
- Return 'void' instead of 'int' in analogix_dp_psr_set(). (Sean)
- Pull the 10ms delay time out into a #define. (Sean)
- Improved the code of analogix_dp_psr_work(). (Sean)
- Indented with spaces for new numbers in rockchip_dp_device struct. (Stéphane, reviewed at Google gerrit)
    [https://chromium-review.googlesource.com/#/c/349085/33/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c@83]

Changes in v3:
- split the common psr logic into a seperate driver, make this to a
  simple sub-psr device driver.

Changes in v2:
- remove vblank notify out (Daniel)
- create a psr_active() callback in vop data struct.

 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 57 +++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

Comments

Sean Paul July 14, 2016, 3:26 p.m. UTC | #1
On Thu, Jul 14, 2016 at 12:15:58PM +0800, Yakir Yang wrote:
> Alway enable the PSR function for Rockchip analogix_dp driver. If panel
> don't support PSR, then the core analogix_dp would ignore this setting.
> 
> Signed-off-by: Yakir Yang <ykk@rock-chips.com>

Reviewed-by: Sean Paul <seanpaul@chromium.org>

> ---
> Changes in v4:
> - Return 'void' instead of 'int' in analogix_dp_psr_set(). (Sean)
> - Pull the 10ms delay time out into a #define. (Sean)
> - Improved the code of analogix_dp_psr_work(). (Sean)
> - Indented with spaces for new numbers in rockchip_dp_device struct. (Stéphane, reviewed at Google gerrit)
>     [https://chromium-review.googlesource.com/#/c/349085/33/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c@83]
> 
> Changes in v3:
> - split the common psr logic into a seperate driver, make this to a
>   simple sub-psr device driver.
> 
> Changes in v2:
> - remove vblank notify out (Daniel)
> - create a psr_active() callback in vop data struct.
> 
>  drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 57 +++++++++++++++++++++++++
>  1 file changed, 57 insertions(+)
> 
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index e81e19a..aa916f4 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -32,6 +32,7 @@
>  #include <drm/bridge/analogix_dp.h>
>  
>  #include "rockchip_drm_drv.h"
> +#include "rockchip_drm_psr.h"
>  #include "rockchip_drm_vop.h"
>  
>  #define RK3288_GRF_SOC_CON6		0x25c
> @@ -41,6 +42,9 @@
>  
>  #define HIWORD_UPDATE(val, mask)	(val | (mask) << 16)
>  
> +#define PSR_SET_DELAY_TIME		msecs_to_jiffies(10)
> +#define PSR_WAIT_LINE_FLAG_TIMEOUT_MS	100
> +
>  #define to_dp(nm)	container_of(nm, struct rockchip_dp_device, nm)
>  
>  /**
> @@ -68,11 +72,55 @@ struct rockchip_dp_device {
>  	struct regmap            *grf;
>  	struct reset_control     *rst;
>  
> +	struct delayed_work      psr_work;
> +	unsigned int             psr_state;
> +
>  	const struct rockchip_dp_chip_data *data;
>  
>  	struct analogix_dp_plat_data plat_data;
>  };
>  
> +static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
> +{
> +	struct rockchip_dp_device *dp = to_dp(encoder);
> +
> +	dev_dbg(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
> +
> +	if (enabled)
> +		dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
> +	else
> +		dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
> +
> +	schedule_delayed_work(&dp->psr_work, PSR_SET_DELAY_TIME);
> +}
> +
> +static void analogix_dp_psr_work(struct work_struct *work)
> +{
> +	struct rockchip_dp_device *dp =
> +				container_of(work, typeof(*dp), psr_work.work);
> +	struct drm_crtc *crtc = dp->encoder.crtc;
> +	int psr_state = dp->psr_state;
> +	int vact_end;
> +	int ret;
> +
> +	if (!crtc)
> +		return;
> +
> +	vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;
> +
> +	ret = rockchip_drm_wait_line_flag(dp->encoder.crtc, vact_end,
> +					  PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
> +	if (ret) {
> +		dev_err(dp->dev, "line flag interrupt did not arrive\n");
> +		return;
> +	}
> +
> +	if (psr_state == EDP_VSC_PSR_STATE_ACTIVE)
> +		analogix_dp_enable_psr(dp->dev);
> +	else
> +		analogix_dp_disable_psr(dp->dev);
> +}
> +
>  static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
>  {
>  	reset_control_assert(dp->rst);
> @@ -340,12 +388,21 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
>  	dp->plat_data.power_off = rockchip_dp_powerdown;
>  	dp->plat_data.get_modes = rockchip_dp_get_modes;
>  
> +	dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
> +	INIT_DELAYED_WORK(&dp->psr_work, analogix_dp_psr_work);
> +
> +	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
> +
>  	return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
>  }
>  
>  static void rockchip_dp_unbind(struct device *dev, struct device *master,
>  			       void *data)
>  {
> +	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
> +
> +	rockchip_drm_psr_unregister(&dp->encoder);
> +
>  	return analogix_dp_unbind(dev, master, data);
>  }
>  
> -- 
> 1.9.1
> 
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
Yakir Yang July 15, 2016, 5:45 a.m. UTC | #2
Sean,

On 07/14/2016 11:26 PM, Sean Paul wrote:
> On Thu, Jul 14, 2016 at 12:15:58PM +0800, Yakir Yang wrote:
>> Alway enable the PSR function for Rockchip analogix_dp driver. If panel
>> don't support PSR, then the core analogix_dp would ignore this setting.
>>
>> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
> Reviewed-by: Sean Paul <seanpaul@chromium.org>

Thanks :-D

- Yakir

>> ---
>> Changes in v4:
>> - Return 'void' instead of 'int' in analogix_dp_psr_set(). (Sean)
>> - Pull the 10ms delay time out into a #define. (Sean)
>> - Improved the code of analogix_dp_psr_work(). (Sean)
>> - Indented with spaces for new numbers in rockchip_dp_device struct. (Stéphane, reviewed at Google gerrit)
>>      [https://chromium-review.googlesource.com/#/c/349085/33/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c@83]
>>
>> Changes in v3:
>> - split the common psr logic into a seperate driver, make this to a
>>    simple sub-psr device driver.
>>
>> Changes in v2:
>> - remove vblank notify out (Daniel)
>> - create a psr_active() callback in vop data struct.
>>
>>   drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 57 +++++++++++++++++++++++++
>>   1 file changed, 57 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>> index e81e19a..aa916f4 100644
>> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>> @@ -32,6 +32,7 @@
>>   #include <drm/bridge/analogix_dp.h>
>>   
>>   #include "rockchip_drm_drv.h"
>> +#include "rockchip_drm_psr.h"
>>   #include "rockchip_drm_vop.h"
>>   
>>   #define RK3288_GRF_SOC_CON6		0x25c
>> @@ -41,6 +42,9 @@
>>   
>>   #define HIWORD_UPDATE(val, mask)	(val | (mask) << 16)
>>   
>> +#define PSR_SET_DELAY_TIME		msecs_to_jiffies(10)
>> +#define PSR_WAIT_LINE_FLAG_TIMEOUT_MS	100
>> +
>>   #define to_dp(nm)	container_of(nm, struct rockchip_dp_device, nm)
>>   
>>   /**
>> @@ -68,11 +72,55 @@ struct rockchip_dp_device {
>>   	struct regmap            *grf;
>>   	struct reset_control     *rst;
>>   
>> +	struct delayed_work      psr_work;
>> +	unsigned int             psr_state;
>> +
>>   	const struct rockchip_dp_chip_data *data;
>>   
>>   	struct analogix_dp_plat_data plat_data;
>>   };
>>   
>> +static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
>> +{
>> +	struct rockchip_dp_device *dp = to_dp(encoder);
>> +
>> +	dev_dbg(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
>> +
>> +	if (enabled)
>> +		dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
>> +	else
>> +		dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
>> +
>> +	schedule_delayed_work(&dp->psr_work, PSR_SET_DELAY_TIME);
>> +}
>> +
>> +static void analogix_dp_psr_work(struct work_struct *work)
>> +{
>> +	struct rockchip_dp_device *dp =
>> +				container_of(work, typeof(*dp), psr_work.work);
>> +	struct drm_crtc *crtc = dp->encoder.crtc;
>> +	int psr_state = dp->psr_state;
>> +	int vact_end;
>> +	int ret;
>> +
>> +	if (!crtc)
>> +		return;
>> +
>> +	vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;
>> +
>> +	ret = rockchip_drm_wait_line_flag(dp->encoder.crtc, vact_end,
>> +					  PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
>> +	if (ret) {
>> +		dev_err(dp->dev, "line flag interrupt did not arrive\n");
>> +		return;
>> +	}
>> +
>> +	if (psr_state == EDP_VSC_PSR_STATE_ACTIVE)
>> +		analogix_dp_enable_psr(dp->dev);
>> +	else
>> +		analogix_dp_disable_psr(dp->dev);
>> +}
>> +
>>   static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
>>   {
>>   	reset_control_assert(dp->rst);
>> @@ -340,12 +388,21 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
>>   	dp->plat_data.power_off = rockchip_dp_powerdown;
>>   	dp->plat_data.get_modes = rockchip_dp_get_modes;
>>   
>> +	dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
>> +	INIT_DELAYED_WORK(&dp->psr_work, analogix_dp_psr_work);
>> +
>> +	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
>> +
>>   	return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
>>   }
>>   
>>   static void rockchip_dp_unbind(struct device *dev, struct device *master,
>>   			       void *data)
>>   {
>> +	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
>> +
>> +	rockchip_drm_psr_unregister(&dp->encoder);
>> +
>>   	return analogix_dp_unbind(dev, master, data);
>>   }
>>   
>> -- 
>> 1.9.1
>>
>>
>> _______________________________________________
>> dri-devel mailing list
>> dri-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
>

Patch
diff mbox

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index e81e19a..aa916f4 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -32,6 +32,7 @@ 
 #include <drm/bridge/analogix_dp.h>
 
 #include "rockchip_drm_drv.h"
+#include "rockchip_drm_psr.h"
 #include "rockchip_drm_vop.h"
 
 #define RK3288_GRF_SOC_CON6		0x25c
@@ -41,6 +42,9 @@ 
 
 #define HIWORD_UPDATE(val, mask)	(val | (mask) << 16)
 
+#define PSR_SET_DELAY_TIME		msecs_to_jiffies(10)
+#define PSR_WAIT_LINE_FLAG_TIMEOUT_MS	100
+
 #define to_dp(nm)	container_of(nm, struct rockchip_dp_device, nm)
 
 /**
@@ -68,11 +72,55 @@  struct rockchip_dp_device {
 	struct regmap            *grf;
 	struct reset_control     *rst;
 
+	struct delayed_work      psr_work;
+	unsigned int             psr_state;
+
 	const struct rockchip_dp_chip_data *data;
 
 	struct analogix_dp_plat_data plat_data;
 };
 
+static void analogix_dp_psr_set(struct drm_encoder *encoder, bool enabled)
+{
+	struct rockchip_dp_device *dp = to_dp(encoder);
+
+	dev_dbg(dp->dev, "%s PSR...\n", enabled ? "Entry" : "Exit");
+
+	if (enabled)
+		dp->psr_state = EDP_VSC_PSR_STATE_ACTIVE;
+	else
+		dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
+
+	schedule_delayed_work(&dp->psr_work, PSR_SET_DELAY_TIME);
+}
+
+static void analogix_dp_psr_work(struct work_struct *work)
+{
+	struct rockchip_dp_device *dp =
+				container_of(work, typeof(*dp), psr_work.work);
+	struct drm_crtc *crtc = dp->encoder.crtc;
+	int psr_state = dp->psr_state;
+	int vact_end;
+	int ret;
+
+	if (!crtc)
+		return;
+
+	vact_end = crtc->mode.vtotal - crtc->mode.vsync_start + crtc->mode.vdisplay;
+
+	ret = rockchip_drm_wait_line_flag(dp->encoder.crtc, vact_end,
+					  PSR_WAIT_LINE_FLAG_TIMEOUT_MS);
+	if (ret) {
+		dev_err(dp->dev, "line flag interrupt did not arrive\n");
+		return;
+	}
+
+	if (psr_state == EDP_VSC_PSR_STATE_ACTIVE)
+		analogix_dp_enable_psr(dp->dev);
+	else
+		analogix_dp_disable_psr(dp->dev);
+}
+
 static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)
 {
 	reset_control_assert(dp->rst);
@@ -340,12 +388,21 @@  static int rockchip_dp_bind(struct device *dev, struct device *master,
 	dp->plat_data.power_off = rockchip_dp_powerdown;
 	dp->plat_data.get_modes = rockchip_dp_get_modes;
 
+	dp->psr_state = ~EDP_VSC_PSR_STATE_ACTIVE;
+	INIT_DELAYED_WORK(&dp->psr_work, analogix_dp_psr_work);
+
+	rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
+
 	return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
 }
 
 static void rockchip_dp_unbind(struct device *dev, struct device *master,
 			       void *data)
 {
+	struct rockchip_dp_device *dp = dev_get_drvdata(dev);
+
+	rockchip_drm_psr_unregister(&dp->encoder);
+
 	return analogix_dp_unbind(dev, master, data);
 }