| Message ID | 1441087288-25404-1-git-send-email-ykk@rock-chips.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Am Dienstag, 1. September 2015, 14:01:28 schrieb Yakir Yang: > Rockchip have three clocks for dp controller, we leave pclk_edp > to analogix_dp driver control, and keep the sclk_edp_24m and > sclk_edp in platform driver. > > Signed-off-by: Yakir Yang <ykk@rock-chips.com> > --- > Changes in v4: > - Remove some deprecated DT properties in rockchip dp document. > > Changes in v3: > - Take Thierry Reding and Heiko suggest, leave "sclk_edp_24m" to rockchip > dp phy driver which name to "24m", and leave "sclk_edp" to analogix dp > core driver which name to "dp", and leave "pclk_edp" to rockchip dp > platform driver which name to "pclk". > - Take Heiko suggest, add devicetree binding document. > - Take Heiko suggest, remove "rockchip,panel" DT property, take use of > remote point to get panel node. > - Add the new function point analogix_dp_platdata.get_modes init. > > Changes in v2: > - Take Heiko suggest, get panel node with remote-endpoint method, > and create devicetree binding for driver. > - Remove the clock enable/disbale with "sclk_edp" & "sclk_edp_24m", > leave those clock to rockchip dp phy driver. > > .../bindings/video/analogix_dp-rockchip.txt | 74 ++++ > drivers/gpu/drm/rockchip/Kconfig | 9 + > drivers/gpu/drm/rockchip/Makefile | 1 + > drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 389 > +++++++++++++++++++++ 4 files changed, 473 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt create > mode 100644 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > > diff --git > a/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt > b/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt new file > mode 100644 > index 0000000..502483e > --- /dev/null > +++ b/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt > @@ -0,0 +1,74 @@ > +Rockchip RK3288 specific extensions to the Analogix Display Port > +================================ > + > +Required properties: > +- compatible: "rockchip,rk3288-edp"; > + > +- reg: physical base address of the controller and length > + > +- clocks: from common clock binding: handle to dp clock. > + of memory mapped region. > + > +- clock-names: from common clock binding: > + Required elements: "dp" "pclk" > + > +- resets: Must contain an entry for each entry in reset-names. > + See ../reset/reset.txt for details. > + > +- reset-names: Must include the name "dp" > + > +- rockchip,grf: this soc should set GRF regs, so need get grf here. > + > +- ports: contain a port node with endpoint definitions as defined in > + Documentation/devicetree/bindings/media/video-interfaces.txt. > + > + > +For the below properties, please refer to Analogix DP binding document: > + * Documentation/devicetree/bindings/drm/bridge/analogix_dp.txt > +- phys (required) > +- phy-names (required) > +- hpd-gpios (optional) > +--------------------------------------------------------------------------- > ---- + > +Example: > + dp-controller: dp@ff970000 { > + compatible = "rockchip,rk3288-dp"; > + reg = <0xff970000 0x4000>; > + interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&cru SCLK_EDP>, <&cru PCLK_EDP_CTRL>; > + clock-names = "dp", "pclk"; > + phys = <&dp_phy>; > + phy-names = "dp"; > + > + rockchip,grf = <&grf>; > + resets = <&cru 111>; > + reset-names = "dp"; > + > + status = "disabled"; > + > + ports { > + edp_in: port { > + #address-cells = <1>; > + #size-cells = <0>; > + edp_in_vopb: endpoint@0 { > + reg = <0>; > + remote-endpoint = <&vopb_out_edp>; > + }; > + edp_in_vopl: endpoint@1 { > + reg = <1>; > + remote-endpoint = <&vopl_out_edp>; > + }; > + }; > + > + edp_out: port@1 { > + reg = <1>; > + #address-cells = <1>; > + #size-cells = <0>; > + edp_out_panel: endpoint { > + reg = <0>; > + remote-endpoint = <&panel_in_edp> > + }; > + }; > + }; > + }; > + just a nit right now, because "git am" mentioned it: git am \[PATCH\ v4\ 08_16\]\ drm_rockchip_dp_add\ rockchip\ platform\ dp\ driver.mbox [...]/linux-rockchip/.git/rebase-apply/patch:108: new blank line at EOF. + meaning you're adding an empty line at the end :-) Heiko
Hi Yakir, Am Dienstag, 1. September 2015, 14:01:28 schrieb Yakir Yang: > Rockchip have three clocks for dp controller, we leave pclk_edp > to analogix_dp driver control, and keep the sclk_edp_24m and > sclk_edp in platform driver. > > Signed-off-by: Yakir Yang <ykk@rock-chips.com> > --- > Changes in v4: > - Remove some deprecated DT properties in rockchip dp document. > > Changes in v3: > - Take Thierry Reding and Heiko suggest, leave "sclk_edp_24m" to rockchip > dp phy driver which name to "24m", and leave "sclk_edp" to analogix dp > core driver which name to "dp", and leave "pclk_edp" to rockchip dp > platform driver which name to "pclk". > - Take Heiko suggest, add devicetree binding document. > - Take Heiko suggest, remove "rockchip,panel" DT property, take use of > remote point to get panel node. > - Add the new function point analogix_dp_platdata.get_modes init. > > Changes in v2: > - Take Heiko suggest, get panel node with remote-endpoint method, > and create devicetree binding for driver. > - Remove the clock enable/disbale with "sclk_edp" & "sclk_edp_24m", > leave those clock to rockchip dp phy driver. > > .../bindings/video/analogix_dp-rockchip.txt | 74 ++++ > drivers/gpu/drm/rockchip/Kconfig | 9 + > drivers/gpu/drm/rockchip/Makefile | 1 + > drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 389 > +++++++++++++++++++++ 4 files changed, 473 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt create > mode 100644 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > > diff --git > a/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt > b/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt new file > mode 100644 > index 0000000..502483e > --- /dev/null > +++ b/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt > @@ -0,0 +1,74 @@ > +Rockchip RK3288 specific extensions to the Analogix Display Port > +================================ > + > +Required properties: > +- compatible: "rockchip,rk3288-edp"; > + > +- reg: physical base address of the controller and length > + > +- clocks: from common clock binding: handle to dp clock. > + of memory mapped region. > + > +- clock-names: from common clock binding: > + Required elements: "dp" "pclk" > + > +- resets: Must contain an entry for each entry in reset-names. > + See ../reset/reset.txt for details. > + > +- reset-names: Must include the name "dp" > + > +- rockchip,grf: this soc should set GRF regs, so need get grf here. > + > +- ports: contain a port node with endpoint definitions as defined in > + Documentation/devicetree/bindings/media/video-interfaces.txt. > + > + > +For the below properties, please refer to Analogix DP binding document: > + * Documentation/devicetree/bindings/drm/bridge/analogix_dp.txt > +- phys (required) > +- phy-names (required) > +- hpd-gpios (optional) > +--------------------------------------------------------------------------- > ---- + > +Example: > + dp-controller: dp@ff970000 { > + compatible = "rockchip,rk3288-dp"; > + reg = <0xff970000 0x4000>; > + interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&cru SCLK_EDP>, <&cru PCLK_EDP_CTRL>; > + clock-names = "dp", "pclk"; > + phys = <&dp_phy>; > + phy-names = "dp"; > + > + rockchip,grf = <&grf>; > + resets = <&cru 111>; > + reset-names = "dp"; > + > + status = "disabled"; > + > + ports { #address-cells = <1>; #size-cells = <0>; > + edp_in: port { edp_in: port@0 reg = <0>; > + #address-cells = <1>; > + #size-cells = <0>; > + edp_in_vopb: endpoint@0 { > + reg = <0>; > + remote-endpoint = <&vopb_out_edp>; > + }; > + edp_in_vopl: endpoint@1 { > + reg = <1>; > + remote-endpoint = <&vopl_out_edp>; > + }; > + }; > + > + edp_out: port@1 { > + reg = <1>; > + #address-cells = <1>; > + #size-cells = <0>; > + edp_out_panel: endpoint { > + reg = <0>; > + remote-endpoint = <&panel_in_edp> > + }; > + }; > + }; > + }; > + > diff --git a/drivers/gpu/drm/rockchip/Kconfig > b/drivers/gpu/drm/rockchip/Kconfig index 35215f6..c2ba945 100644 > --- a/drivers/gpu/drm/rockchip/Kconfig > +++ b/drivers/gpu/drm/rockchip/Kconfig > @@ -25,3 +25,12 @@ config ROCKCHIP_DW_HDMI > for the Synopsys DesignWare HDMI driver. If you want to > enable HDMI on RK3288 based SoC, you should selet this > option. > + > +config ROCKCHIP_ANALOGIX_DP > + tristate "Rockchip specific extensions for Analogix DP driver" > + depends on DRM_ROCKCHIP > + select DRM_ANALOGIX_DP > + help > + This selects support for Rockchip SoC specific extensions > + for the Analogix Core DP driver. If you want to enable DP > + on RK3288 based SoC, you should selet this option. > diff --git a/drivers/gpu/drm/rockchip/Makefile > b/drivers/gpu/drm/rockchip/Makefile index f3d8a19..8ad01fb 100644 > --- a/drivers/gpu/drm/rockchip/Makefile > +++ b/drivers/gpu/drm/rockchip/Makefile > @@ -6,5 +6,6 @@ rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o > rockchip_drm_fbdev.o \ rockchip_drm_gem.o > > obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o > +obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o > > obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_drm_vop.o > diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c new file mode 100644 > index 0000000..cebff9e > --- /dev/null > +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > @@ -0,0 +1,389 @@ > +/* > + * Rockchip SoC DP (Display Port) interface driver. > + * > + * Copyright (C) Fuzhou Rockchip Electronics Co., Ltd. > + * Author: Andy Yan <andy.yan@rock-chips.com> > + * Yakir Yang <ykk@rock-chips.com> > + * Jeff Chen <jeff.chen@rock-chips.com> > + * > + * 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 <drm/drmP.h> > +#include <drm/drm_crtc_helper.h> > +#include <drm/drm_panel.h> > +#include <drm/drm_of.h> > +#include <drm/drm_dp_helper.h> > + > +#include <linux/component.h> > +#include <linux/mfd/syscon.h> > +#include <linux/of_graph.h> > +#include <linux/regmap.h> > +#include <linux/reset.h> > +#include <linux/clk.h> > + > +#include <video/of_videomode.h> > +#include <video/videomode.h> > + > +#include <drm/bridge/analogix_dp.h> > + > +#include "rockchip_drm_drv.h" > +#include "rockchip_drm_vop.h" > + > +#define encoder_to_dp(c) \ > + container_of(c, struct rockchip_dp_device, encoder) > + > +#define plat_data_to_dp(pd) \ > + container_of(pd, struct rockchip_dp_device, plat_data) > + > +/* dp grf register offset */ > +#define GRF_GPIO7B_IOMUX 0x0070 > +#define GPIO7B3_SEL_MASK (0x03 << 6) > +#define GPIO7B3_SEL_EDP_HOTPLUG BIT(7) please remove, see comment near pre_init > + > +#define GRF_SOC_CON6 0x025c > +#define GRF_EDP_LCD_SEL_MASK BIT(5) > +#define GRF_EDP_SEL_VOP_LIT BIT(5) > +#define GRF_EDP_SEL_VOP_BIG 0 > + > +struct rockchip_dp_device { > + struct drm_device *drm_dev; > + struct device *dev; > + struct drm_encoder encoder; > + struct drm_display_mode mode; > + > + struct clk *pclk; > + struct regmap *grf; > + struct reset_control *rst; > + > + struct analogix_dp_plat_data plat_data; > +}; > + > +static int rockchip_dp_pre_init(struct rockchip_dp_device *dp) > +{ > + u32 val; > + int ret; > + > + val = GPIO7B3_SEL_EDP_HOTPLUG | (GPIO7B3_SEL_MASK << 16); > + ret = regmap_write(dp->grf, GRF_GPIO7B_IOMUX, val); this is just a regular pinctrl setting. Please don't write onto other components registers. Use a regular pinctrl setting in the devicetree instead. > + if (ret != 0) { > + dev_err(dp->dev, "Could not config GRF edp hpd: %d\n", ret); > + return ret; > + } > + > + reset_control_assert(dp->rst); > + usleep_range(10, 20); > + reset_control_deassert(dp->rst); > + > + return 0; > +} Heiko
diff --git a/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt b/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt new file mode 100644 index 0000000..502483e --- /dev/null +++ b/Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt @@ -0,0 +1,74 @@ +Rockchip RK3288 specific extensions to the Analogix Display Port +================================ + +Required properties: +- compatible: "rockchip,rk3288-edp"; + +- reg: physical base address of the controller and length + +- clocks: from common clock binding: handle to dp clock. + of memory mapped region. + +- clock-names: from common clock binding: + Required elements: "dp" "pclk" + +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. + +- reset-names: Must include the name "dp" + +- rockchip,grf: this soc should set GRF regs, so need get grf here. + +- ports: contain a port node with endpoint definitions as defined in + Documentation/devicetree/bindings/media/video-interfaces.txt. + + +For the below properties, please refer to Analogix DP binding document: + * Documentation/devicetree/bindings/drm/bridge/analogix_dp.txt +- phys (required) +- phy-names (required) +- hpd-gpios (optional) +------------------------------------------------------------------------------- + +Example: + dp-controller: dp@ff970000 { + compatible = "rockchip,rk3288-dp"; + reg = <0xff970000 0x4000>; + interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru SCLK_EDP>, <&cru PCLK_EDP_CTRL>; + clock-names = "dp", "pclk"; + phys = <&dp_phy>; + phy-names = "dp"; + + rockchip,grf = <&grf>; + resets = <&cru 111>; + reset-names = "dp"; + + status = "disabled"; + + ports { + edp_in: port { + #address-cells = <1>; + #size-cells = <0>; + edp_in_vopb: endpoint@0 { + reg = <0>; + remote-endpoint = <&vopb_out_edp>; + }; + edp_in_vopl: endpoint@1 { + reg = <1>; + remote-endpoint = <&vopl_out_edp>; + }; + }; + + edp_out: port@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + edp_out_panel: endpoint { + reg = <0>; + remote-endpoint = <&panel_in_edp> + }; + }; + }; + }; + diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig index 35215f6..c2ba945 100644 --- a/drivers/gpu/drm/rockchip/Kconfig +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -25,3 +25,12 @@ config ROCKCHIP_DW_HDMI for the Synopsys DesignWare HDMI driver. If you want to enable HDMI on RK3288 based SoC, you should selet this option. + +config ROCKCHIP_ANALOGIX_DP + tristate "Rockchip specific extensions for Analogix DP driver" + depends on DRM_ROCKCHIP + select DRM_ANALOGIX_DP + help + This selects support for Rockchip SoC specific extensions + for the Analogix Core DP driver. If you want to enable DP + on RK3288 based SoC, you should selet this option. diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile index f3d8a19..8ad01fb 100644 --- a/drivers/gpu/drm/rockchip/Makefile +++ b/drivers/gpu/drm/rockchip/Makefile @@ -6,5 +6,6 @@ rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o rockchip_drm_fbdev.o \ rockchip_drm_gem.o obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o +obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_drm_vop.o diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c new file mode 100644 index 0000000..cebff9e --- /dev/null +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -0,0 +1,389 @@ +/* + * Rockchip SoC DP (Display Port) interface driver. + * + * Copyright (C) Fuzhou Rockchip Electronics Co., Ltd. + * Author: Andy Yan <andy.yan@rock-chips.com> + * Yakir Yang <ykk@rock-chips.com> + * Jeff Chen <jeff.chen@rock-chips.com> + * + * 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 <drm/drmP.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_panel.h> +#include <drm/drm_of.h> +#include <drm/drm_dp_helper.h> + +#include <linux/component.h> +#include <linux/mfd/syscon.h> +#include <linux/of_graph.h> +#include <linux/regmap.h> +#include <linux/reset.h> +#include <linux/clk.h> + +#include <video/of_videomode.h> +#include <video/videomode.h> + +#include <drm/bridge/analogix_dp.h> + +#include "rockchip_drm_drv.h" +#include "rockchip_drm_vop.h" + +#define encoder_to_dp(c) \ + container_of(c, struct rockchip_dp_device, encoder) + +#define plat_data_to_dp(pd) \ + container_of(pd, struct rockchip_dp_device, plat_data) + +/* dp grf register offset */ +#define GRF_GPIO7B_IOMUX 0x0070 +#define GPIO7B3_SEL_MASK (0x03 << 6) +#define GPIO7B3_SEL_EDP_HOTPLUG BIT(7) + +#define GRF_SOC_CON6 0x025c +#define GRF_EDP_LCD_SEL_MASK BIT(5) +#define GRF_EDP_SEL_VOP_LIT BIT(5) +#define GRF_EDP_SEL_VOP_BIG 0 + +struct rockchip_dp_device { + struct drm_device *drm_dev; + struct device *dev; + struct drm_encoder encoder; + struct drm_display_mode mode; + + struct clk *pclk; + struct regmap *grf; + struct reset_control *rst; + + struct analogix_dp_plat_data plat_data; +}; + +static int rockchip_dp_pre_init(struct rockchip_dp_device *dp) +{ + u32 val; + int ret; + + val = GPIO7B3_SEL_EDP_HOTPLUG | (GPIO7B3_SEL_MASK << 16); + ret = regmap_write(dp->grf, GRF_GPIO7B_IOMUX, val); + if (ret != 0) { + dev_err(dp->dev, "Could not config GRF edp hpd: %d\n", ret); + return ret; + } + + reset_control_assert(dp->rst); + usleep_range(10, 20); + reset_control_deassert(dp->rst); + + return 0; +} + +static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data) +{ + struct rockchip_dp_device *dp = plat_data_to_dp(plat_data); + int ret; + + ret = clk_prepare_enable(dp->pclk); + if (ret < 0) { + dev_err(dp->dev, "failed to enable pclk %d\n", ret); + return ret; + } + + ret = rockchip_dp_pre_init(dp); + if (ret < 0) { + dev_err(dp->dev, "failed to dp pre init %d\n", ret); + return ret; + } + + return 0; +} + +static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data) +{ + struct rockchip_dp_device *dp = plat_data_to_dp(plat_data); + + clk_disable_unprepare(dp->pclk); + + return 0; +} + +static bool +rockchip_dp_drm_encoder_mode_fixup(struct drm_encoder *encoder, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + /* do nothing */ + return true; +} + +static void rockchip_dp_drm_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adjusted) +{ + /* do nothing */ +} + +static void rockchip_dp_drm_encoder_prepare(struct drm_encoder *encoder) +{ + struct rockchip_dp_device *dp = encoder_to_dp(encoder); + u32 val; + int ret; + + ret = rockchip_drm_crtc_mode_config(encoder->crtc, + DRM_MODE_CONNECTOR_eDP, + ROCKCHIP_OUT_MODE_AAAA); + if (ret < 0) { + dev_err(dp->dev, "Could not set crtc mode config: %d.\n", ret); + return; + } + + ret = rockchip_drm_encoder_get_mux_id(dp->dev->of_node, encoder); + if (ret < 0) + return; + + if (ret) + val = GRF_EDP_SEL_VOP_LIT | (GRF_EDP_LCD_SEL_MASK << 16); + else + val = GRF_EDP_SEL_VOP_BIG | (GRF_EDP_LCD_SEL_MASK << 16); + + dev_dbg(dp->dev, "vop %s output to dp\n", (ret) ? "LIT" : "BIG"); + + ret = regmap_write(dp->grf, GRF_SOC_CON6, val); + if (ret != 0) { + dev_err(dp->dev, "Could not write to GRF: %d\n", ret); + return; + } +} + +static void rockchip_dp_drm_encoder_nop(struct drm_encoder *encoder) +{ + /* do nothing */ +} + +static struct drm_encoder_helper_funcs rockchip_dp_encoder_helper_funcs = { + .mode_fixup = rockchip_dp_drm_encoder_mode_fixup, + .mode_set = rockchip_dp_drm_encoder_mode_set, + .prepare = rockchip_dp_drm_encoder_prepare, + .commit = rockchip_dp_drm_encoder_nop, + .disable = rockchip_dp_drm_encoder_nop, +}; + +static void rockchip_dp_drm_encoder_destroy(struct drm_encoder *encoder) +{ + drm_encoder_cleanup(encoder); +} + +static struct drm_encoder_funcs rockchip_dp_encoder_funcs = { + .destroy = rockchip_dp_drm_encoder_destroy, +}; + +static int rockchip_dp_init(struct rockchip_dp_device *dp) +{ + struct device *dev = dp->dev; + struct device_node *np = dev->of_node; + int ret; + + dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); + if (IS_ERR(dp->grf)) { + dev_err(dev, "failed to get rockchip,grf property\n"); + return PTR_ERR(dp->grf); + } + + dp->pclk = devm_clk_get(dev, "pclk"); + if (IS_ERR(dp->pclk)) { + dev_err(dev, "failed to get pclk property\n"); + return PTR_ERR(dp->pclk); + } + + dp->rst = devm_reset_control_get(dev, "dp"); + if (IS_ERR(dp->rst)) { + dev_err(dev, "failed to get dp reset control\n"); + return PTR_ERR(dp->rst); + } + + ret = clk_prepare_enable(dp->pclk); + if (ret < 0) { + dev_err(dp->dev, "failed to enable pclk %d\n", ret); + return ret; + } + + ret = rockchip_dp_pre_init(dp); + if (ret < 0) { + dev_err(dp->dev, "failed to pre init %d\n", ret); + return ret; + } + + return 0; +} + +static int rockchip_dp_drm_create_encoder(struct rockchip_dp_device *dp) +{ + struct drm_encoder *encoder = &dp->encoder; + struct drm_device *drm_dev = dp->drm_dev; + struct device *dev = dp->dev; + int ret; + + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, + dev->of_node); + DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); + + ret = drm_encoder_init(drm_dev, encoder, &rockchip_dp_encoder_funcs, + DRM_MODE_ENCODER_TMDS); + if (ret) { + DRM_ERROR("failed to initialize encoder with drm\n"); + return ret; + } + + drm_encoder_helper_add(encoder, &rockchip_dp_encoder_helper_funcs); + + return 0; +} + +static int rockchip_dp_bind(struct device *dev, struct device *master, + void *data) +{ + struct rockchip_dp_device *dp = dev_get_drvdata(dev); + struct drm_device *drm_dev = data; + int 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); + + ret = rockchip_dp_init(dp); + if (ret < 0) + return ret; + + dp->drm_dev = drm_dev; + + ret = rockchip_dp_drm_create_encoder(dp); + if (ret) { + DRM_ERROR("failed to create drm encoder\n"); + return ret; + } + + dp->plat_data.attach = NULL; + dp->plat_data.get_modes = NULL; + dp->plat_data.power_on = rockchip_dp_poweron; + dp->plat_data.power_off = rockchip_dp_powerdown; + + return analogix_dp_bind(dev, dp->drm_dev, &dp->encoder, + &dp->plat_data); +} + +static void rockchip_dp_unbind(struct device *dev, struct device *master, + void *data) +{ + return analogix_dp_unbind(dev, master, data); +} + +static const struct component_ops rockchip_dp_component_ops = { + .bind = rockchip_dp_bind, + .unbind = rockchip_dp_unbind, +}; + +static int rockchip_dp_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *panel_node, *port, *endpoint; + struct rockchip_dp_device *dp; + struct drm_panel *panel; + + port = of_graph_get_port_by_id(dev->of_node, 1); + if (!port) { + dev_err(dev, "can't find output port\n"); + return -EINVAL; + } + + endpoint = of_get_child_by_name(port, "endpoint"); + of_node_put(port); + if (!endpoint) { + dev_err(dev, "no output endpoint found\n"); + return -EINVAL; + } + + panel_node = of_graph_get_remote_port_parent(endpoint); + of_node_put(endpoint); + if (!panel_node) { + dev_err(dev, "no output node found\n"); + return -EINVAL; + } + + panel = of_drm_find_panel(panel_node); + if (!panel) { + DRM_ERROR("failed to find panel\n"); + of_node_put(panel_node); + return -EPROBE_DEFER; + } + + of_node_put(panel_node); + + dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL); + if (!dp) + return -ENOMEM; + + dp->dev = dev; + + dp->plat_data.panel = panel; + + /* + * 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 could take charge of the drvdata. + */ + platform_set_drvdata(pdev, dp); + + return component_add(dev, &rockchip_dp_component_ops); +} + +static int rockchip_dp_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &rockchip_dp_component_ops); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int rockchip_dp_suspend(struct device *dev) +{ + return analogix_dp_suspend(dev); +} + +static int rockchip_dp_resume(struct device *dev) +{ + return analogix_dp_resume(dev); +} +#endif + +static const struct dev_pm_ops rockchip_dp_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(rockchip_dp_suspend, rockchip_dp_resume) +}; + +static const struct of_device_id rockchip_dp_dt_ids[] = { + {.compatible = "rockchip,rk3288-dp",}, + {} +}; +MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids); + +static struct platform_driver rockchip_dp_driver = { + .probe = rockchip_dp_probe, + .remove = rockchip_dp_remove, + .driver = { + .name = "rockchip-dp", + .owner = THIS_MODULE, + .pm = &rockchip_dp_pm_ops, + .of_match_table = of_match_ptr(rockchip_dp_dt_ids), + }, +}; + +module_platform_driver(rockchip_dp_driver); + +MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>"); +MODULE_AUTHOR("Jeff chen <jeff.chen@rock-chips.com>"); +MODULE_DESCRIPTION("Rockchip Specific Analogix-DP Driver Extension"); +MODULE_LICENSE("GPL v2");
Rockchip have three clocks for dp controller, we leave pclk_edp to analogix_dp driver control, and keep the sclk_edp_24m and sclk_edp in platform driver. Signed-off-by: Yakir Yang <ykk@rock-chips.com> --- Changes in v4: - Remove some deprecated DT properties in rockchip dp document. Changes in v3: - Take Thierry Reding and Heiko suggest, leave "sclk_edp_24m" to rockchip dp phy driver which name to "24m", and leave "sclk_edp" to analogix dp core driver which name to "dp", and leave "pclk_edp" to rockchip dp platform driver which name to "pclk". - Take Heiko suggest, add devicetree binding document. - Take Heiko suggest, remove "rockchip,panel" DT property, take use of remote point to get panel node. - Add the new function point analogix_dp_platdata.get_modes init. Changes in v2: - Take Heiko suggest, get panel node with remote-endpoint method, and create devicetree binding for driver. - Remove the clock enable/disbale with "sclk_edp" & "sclk_edp_24m", leave those clock to rockchip dp phy driver. .../bindings/video/analogix_dp-rockchip.txt | 74 ++++ drivers/gpu/drm/rockchip/Kconfig | 9 + drivers/gpu/drm/rockchip/Makefile | 1 + drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 389 +++++++++++++++++++++ 4 files changed, 473 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt create mode 100644 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c