diff mbox series

[v5,03/11] drm/mediatek: gamma: Support SoC specific LUT size

Message ID 20230601121022.2401844-4-angelogioacchino.delregno@collabora.com (mailing list archive)
State New, archived
Headers show
Series MediaTek DDP GAMMA - 12-bit LUT support | expand

Commit Message

AngeloGioacchino Del Regno June 1, 2023, 12:10 p.m. UTC 
Newer SoCs support a bigger Gamma LUT table: wire up a callback
to retrieve the correct LUT size for each different Gamma IP.

Co-developed-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
[Angelo: Rewritten commit message/description + porting]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_disp_drv.h     |  1 +
 drivers/gpu/drm/mediatek/mtk_disp_gamma.c   | 25 ++++++++++++++++++---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c     |  4 ++--
 drivers/gpu/drm/mediatek/mtk_drm_crtc.h     |  1 -
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |  1 +
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |  9 ++++++++
 6 files changed, 35 insertions(+), 6 deletions(-)

Comments

CK Hu (胡俊光) June 27, 2023, 3:37 a.m. UTC | #1 
Hi, Angelo:

On Thu, 2023-06-01 at 14:10 +0200, AngeloGioacchino Del Regno wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  Newer SoCs support a bigger Gamma LUT table: wire up a callback
> to retrieve the correct LUT size for each different Gamma IP.
> 
> Co-developed-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> [Angelo: Rewritten commit message/description + porting]
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@collabora.com>
> Reviewed-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_disp_drv.h     |  1 +
>  drivers/gpu/drm/mediatek/mtk_disp_gamma.c   | 25 ++++++++++++++++++-
> --
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c     |  4 ++--
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.h     |  1 -
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |  1 +
>  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h |  9 ++++++++
>  6 files changed, 35 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> index 75045932353e..e554b19f4830 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> @@ -53,6 +53,7 @@ void mtk_gamma_clk_disable(struct device *dev);
>  void mtk_gamma_config(struct device *dev, unsigned int w,
>  		      unsigned int h, unsigned int vrefresh,
>  		      unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
> +unsigned int mtk_gamma_get_lut_size(struct device *dev);
>  void mtk_gamma_set(struct device *dev, struct drm_crtc_state
> *state);
>  void mtk_gamma_set_common(struct device *dev, void __iomem *regs,
> struct drm_crtc_state *state);
>  void mtk_gamma_start(struct device *dev);
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> index ce6f2499b891..b25ba209e7a4 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> @@ -25,10 +25,12 @@
>  #define DISP_GAMMA_LUT				0x0700
>  
>  #define LUT_10BIT_MASK				0x03ff
> +#define LUT_SIZE_DEFAULT			512

Only AAL driver use this definition, so move this to AAL driver.

Regards,
CK

>  
>  struct mtk_disp_gamma_data {
>  	bool has_dither;
>  	bool lut_diff;
> +	u16 lut_size;
>  };
>  
>  /*
> @@ -55,6 +57,17 @@ void mtk_gamma_clk_disable(struct device *dev)
>  	clk_disable_unprepare(gamma->clk);
>  }
>  
> +unsigned int mtk_gamma_get_lut_size(struct device *dev)
> +{
> +	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
> +	unsigned int lut_size = LUT_SIZE_DEFAULT;
> +
> +	if (gamma && gamma->data)
> +		lut_size = gamma->data->lut_size;
> +
> +	return lut_size;
> +}
> +
>  void mtk_gamma_set_common(struct device *dev, void __iomem *regs,
> struct drm_crtc_state *state)
>  {
>  	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
> @@ -62,6 +75,7 @@ void mtk_gamma_set_common(struct device *dev, void
> __iomem *regs, struct drm_crt
>  	struct drm_color_lut *lut;
>  	void __iomem *lut_base;
>  	bool lut_diff;
> +	u16 lut_size;
>  	u32 word;
>  	u32 diff[3] = {0};
>  
> @@ -69,17 +83,20 @@ void mtk_gamma_set_common(struct device *dev,
> void __iomem *regs, struct drm_crt
>  	if (!state->gamma_lut)
>  		return;
>  
> -	if (gamma && gamma->data)
> +	if (gamma && gamma->data) {
>  		lut_diff = gamma->data->lut_diff;
> -	else
> +		lut_size = gamma->data->lut_size;
> +	} else {
>  		lut_diff = false;
> +		lut_size = LUT_SIZE_DEFAULT;
> +	}
>  
>  	reg = readl(regs + DISP_GAMMA_CFG);
>  	reg = reg | GAMMA_LUT_EN;
>  	writel(reg, regs + DISP_GAMMA_CFG);
>  	lut_base = regs + DISP_GAMMA_LUT;
>  	lut = (struct drm_color_lut *)state->gamma_lut->data;
> -	for (i = 0; i < MTK_LUT_SIZE; i++) {
> +	for (i = 0; i < lut_size; i++) {
>  		if (!lut_diff || (i % 2 == 0)) {
>  			word = (((lut[i].red >> 6) & LUT_10BIT_MASK) <<
> 20) +
>  				(((lut[i].green >> 6) & LUT_10BIT_MASK)
> << 10) +
> @@ -196,10 +213,12 @@ static int mtk_disp_gamma_remove(struct
> platform_device *pdev)
>  
>  static const struct mtk_disp_gamma_data mt8173_gamma_driver_data = {
>  	.has_dither = true,
> +	.lut_size = 512,
>  };
>  
>  static const struct mtk_disp_gamma_data mt8183_gamma_driver_data = {
>  	.lut_diff = true,
> +	.lut_size = 512,
>  };
>  
>  static const struct of_device_id mtk_disp_gamma_driver_dt_match[] =
> {
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index d40142842f85..0df62b076f49 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -958,8 +958,8 @@ int mtk_drm_crtc_create(struct drm_device
> *drm_dev,
>  		mtk_crtc->ddp_comp[i] = comp;
>  
>  		if (comp->funcs) {
> -			if (comp->funcs->gamma_set)
> -				gamma_lut_size = MTK_LUT_SIZE;
> +			if (comp->funcs->gamma_set && comp->funcs-
> >gamma_get_lut_size)
> +				gamma_lut_size =
> mtk_ddp_gamma_get_lut_size(comp);
>  
>  			if (comp->funcs->ctm_set)
>  				has_ctm = true;
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> index 3e9046993d09..b2e50292e57d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
> @@ -10,7 +10,6 @@
>  #include "mtk_drm_ddp_comp.h"
>  #include "mtk_drm_plane.h"
>  
> -#define MTK_LUT_SIZE	512
>  #define MTK_MAX_BPC	10
>  #define MTK_MIN_BPC	3
>  
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> index f114da4d36a9..c77af2e4000f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> @@ -322,6 +322,7 @@ static const struct mtk_ddp_comp_funcs ddp_dsi =
> {
>  static const struct mtk_ddp_comp_funcs ddp_gamma = {
>  	.clk_enable = mtk_gamma_clk_enable,
>  	.clk_disable = mtk_gamma_clk_disable,
> +	.gamma_get_lut_size = mtk_gamma_get_lut_size,
>  	.gamma_set = mtk_gamma_set,
>  	.config = mtk_gamma_config,
>  	.start = mtk_gamma_start,
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> index febcaeef16a1..c1355960e195 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
> @@ -67,6 +67,7 @@ struct mtk_ddp_comp_funcs {
>  	void (*layer_config)(struct device *dev, unsigned int idx,
>  			     struct mtk_plane_state *state,
>  			     struct cmdq_pkt *cmdq_pkt);
> +	unsigned int (*gamma_get_lut_size)(struct device *dev);
>  	void (*gamma_set)(struct device *dev,
>  			  struct drm_crtc_state *state);
>  	void (*bgclr_in_on)(struct device *dev);
> @@ -186,6 +187,14 @@ static inline void
> mtk_ddp_comp_layer_config(struct mtk_ddp_comp *comp,
>  		comp->funcs->layer_config(comp->dev, idx, state,
> cmdq_pkt);
>  }
>  
> +static inline unsigned int mtk_ddp_gamma_get_lut_size(struct
> mtk_ddp_comp *comp)
> +{
> +	if (comp->funcs && comp->funcs->gamma_get_lut_size)
> +		return comp->funcs->gamma_get_lut_size(comp->dev);
> +
> +	return 0;
> +}
> +
>  static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp,
>  				     struct drm_crtc_state *state)
>  {
> -- 
> 2.40.1
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index 75045932353e..e554b19f4830 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -53,6 +53,7 @@  void mtk_gamma_clk_disable(struct device *dev);
 void mtk_gamma_config(struct device *dev, unsigned int w,
 		      unsigned int h, unsigned int vrefresh,
 		      unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
+unsigned int mtk_gamma_get_lut_size(struct device *dev);
 void mtk_gamma_set(struct device *dev, struct drm_crtc_state *state);
 void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crtc_state *state);
 void mtk_gamma_start(struct device *dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
index ce6f2499b891..b25ba209e7a4 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
@@ -25,10 +25,12 @@ 
 #define DISP_GAMMA_LUT				0x0700
 
 #define LUT_10BIT_MASK				0x03ff
+#define LUT_SIZE_DEFAULT			512
 
 struct mtk_disp_gamma_data {
 	bool has_dither;
 	bool lut_diff;
+	u16 lut_size;
 };
 
 /*
@@ -55,6 +57,17 @@  void mtk_gamma_clk_disable(struct device *dev)
 	clk_disable_unprepare(gamma->clk);
 }
 
+unsigned int mtk_gamma_get_lut_size(struct device *dev)
+{
+	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
+	unsigned int lut_size = LUT_SIZE_DEFAULT;
+
+	if (gamma && gamma->data)
+		lut_size = gamma->data->lut_size;
+
+	return lut_size;
+}
+
 void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crtc_state *state)
 {
 	struct mtk_disp_gamma *gamma = dev_get_drvdata(dev);
@@ -62,6 +75,7 @@  void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crt
 	struct drm_color_lut *lut;
 	void __iomem *lut_base;
 	bool lut_diff;
+	u16 lut_size;
 	u32 word;
 	u32 diff[3] = {0};
 
@@ -69,17 +83,20 @@  void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crt
 	if (!state->gamma_lut)
 		return;
 
-	if (gamma && gamma->data)
+	if (gamma && gamma->data) {
 		lut_diff = gamma->data->lut_diff;
-	else
+		lut_size = gamma->data->lut_size;
+	} else {
 		lut_diff = false;
+		lut_size = LUT_SIZE_DEFAULT;
+	}
 
 	reg = readl(regs + DISP_GAMMA_CFG);
 	reg = reg | GAMMA_LUT_EN;
 	writel(reg, regs + DISP_GAMMA_CFG);
 	lut_base = regs + DISP_GAMMA_LUT;
 	lut = (struct drm_color_lut *)state->gamma_lut->data;
-	for (i = 0; i < MTK_LUT_SIZE; i++) {
+	for (i = 0; i < lut_size; i++) {
 		if (!lut_diff || (i % 2 == 0)) {
 			word = (((lut[i].red >> 6) & LUT_10BIT_MASK) << 20) +
 				(((lut[i].green >> 6) & LUT_10BIT_MASK) << 10) +
@@ -196,10 +213,12 @@  static int mtk_disp_gamma_remove(struct platform_device *pdev)
 
 static const struct mtk_disp_gamma_data mt8173_gamma_driver_data = {
 	.has_dither = true,
+	.lut_size = 512,
 };
 
 static const struct mtk_disp_gamma_data mt8183_gamma_driver_data = {
 	.lut_diff = true,
+	.lut_size = 512,
 };
 
 static const struct of_device_id mtk_disp_gamma_driver_dt_match[] = {
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index d40142842f85..0df62b076f49 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -958,8 +958,8 @@  int mtk_drm_crtc_create(struct drm_device *drm_dev,
 		mtk_crtc->ddp_comp[i] = comp;
 
 		if (comp->funcs) {
-			if (comp->funcs->gamma_set)
-				gamma_lut_size = MTK_LUT_SIZE;
+			if (comp->funcs->gamma_set && comp->funcs->gamma_get_lut_size)
+				gamma_lut_size = mtk_ddp_gamma_get_lut_size(comp);
 
 			if (comp->funcs->ctm_set)
 				has_ctm = true;
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
index 3e9046993d09..b2e50292e57d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
@@ -10,7 +10,6 @@ 
 #include "mtk_drm_ddp_comp.h"
 #include "mtk_drm_plane.h"
 
-#define MTK_LUT_SIZE	512
 #define MTK_MAX_BPC	10
 #define MTK_MIN_BPC	3
 
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index f114da4d36a9..c77af2e4000f 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -322,6 +322,7 @@  static const struct mtk_ddp_comp_funcs ddp_dsi = {
 static const struct mtk_ddp_comp_funcs ddp_gamma = {
 	.clk_enable = mtk_gamma_clk_enable,
 	.clk_disable = mtk_gamma_clk_disable,
+	.gamma_get_lut_size = mtk_gamma_get_lut_size,
 	.gamma_set = mtk_gamma_set,
 	.config = mtk_gamma_config,
 	.start = mtk_gamma_start,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index febcaeef16a1..c1355960e195 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -67,6 +67,7 @@  struct mtk_ddp_comp_funcs {
 	void (*layer_config)(struct device *dev, unsigned int idx,
 			     struct mtk_plane_state *state,
 			     struct cmdq_pkt *cmdq_pkt);
+	unsigned int (*gamma_get_lut_size)(struct device *dev);
 	void (*gamma_set)(struct device *dev,
 			  struct drm_crtc_state *state);
 	void (*bgclr_in_on)(struct device *dev);
@@ -186,6 +187,14 @@  static inline void mtk_ddp_comp_layer_config(struct mtk_ddp_comp *comp,
 		comp->funcs->layer_config(comp->dev, idx, state, cmdq_pkt);
 }
 
+static inline unsigned int mtk_ddp_gamma_get_lut_size(struct mtk_ddp_comp *comp)
+{
+	if (comp->funcs && comp->funcs->gamma_get_lut_size)
+		return comp->funcs->gamma_get_lut_size(comp->dev);
+
+	return 0;
+}
+
 static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp,
 				     struct drm_crtc_state *state)
 {