diff mbox series

[v11,12/12] drm/mediatek: dpi: Add matrix_sel helper

Message ID 20220613064841.10481-13-rex-bc.chen@mediatek.com (mailing list archive)
State New, archived
Headers show
Series drm/mediatek: Add MT8195 dp_intf driver | expand

Commit Message

Rex-BC Chen (陳柏辰) June 13, 2022, 6:48 a.m. UTC 
From: Guillaume Ranquet <granquet@baylibre.com>

Add a mtk_dpi_matrix_sel() helper to update the DPI_MATRIX_SET
register depending on the color format.

Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c      | 21 +++++++++++++++++++++
 drivers/gpu/drm/mediatek/mtk_dpi_regs.h |  3 +++
 2 files changed, 24 insertions(+)

Comments

CK Hu (胡俊光) June 14, 2022, 6:20 a.m. UTC | #1 
Hi, Bo-Chen:

On Mon, 2022-06-13 at 14:48 +0800, Bo-Chen Chen wrote:
> From: Guillaume Ranquet <granquet@baylibre.com>
> 
> Add a mtk_dpi_matrix_sel() helper to update the DPI_MATRIX_SET
> register depending on the color format.

Why set DPI_MATRIX_SET? New feature or bug fix? What does this matrix
work for?

Regards,
CK

> 
> Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
> Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c      | 21 +++++++++++++++++++++
>  drivers/gpu/drm/mediatek/mtk_dpi_regs.h |  3 +++
>  2 files changed, 24 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c
> b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 9668bd5dd14a..dc355a512963 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -387,6 +387,25 @@ static void mtk_dpi_config_disable_edge(struct
> mtk_dpi *dpi)
>  		mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0,
> EDGE_SEL_EN);
>  }
>  
> +static void mtk_dpi_matrix_sel(struct mtk_dpi *dpi, enum
> mtk_dpi_out_color_format format)
> +{
> +	u32 matrix_sel = 0;
> +
> +	switch (format) {
> +	case MTK_DPI_COLOR_FORMAT_YCBCR_422:
> +	case MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL:
> +	case MTK_DPI_COLOR_FORMAT_YCBCR_444:
> +	case MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL:
> +	case MTK_DPI_COLOR_FORMAT_XV_YCC:
> +		if (dpi->mode.hdisplay <= 720)
> +			matrix_sel = 0x2;
> +		break;
> +	default:
> +		break;
> +	}
> +	mtk_dpi_mask(dpi, DPI_MATRIX_SET, matrix_sel,
> INT_MATRIX_SEL_MASK);
> +}
> +
>  static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
>  					enum mtk_dpi_out_color_format
> format)
>  {
> @@ -394,6 +413,7 @@ static void mtk_dpi_config_color_format(struct
> mtk_dpi *dpi,
>  	    (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
>  		mtk_dpi_config_yuv422_enable(dpi, false);
>  		mtk_dpi_config_csc_enable(dpi, true);
> +		mtk_dpi_matrix_sel(dpi, format);
>  		if (dpi->conf->swap_input_support)
>  			mtk_dpi_config_swap_input(dpi, false);
>  		mtk_dpi_config_channel_swap(dpi,
> MTK_DPI_OUT_CHANNEL_SWAP_BGR);
> @@ -401,6 +421,7 @@ static void mtk_dpi_config_color_format(struct
> mtk_dpi *dpi,
>  		   (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
>  		mtk_dpi_config_yuv422_enable(dpi, true);
>  		mtk_dpi_config_csc_enable(dpi, true);
> +		mtk_dpi_matrix_sel(dpi, format);
>  		if (dpi->conf->swap_input_support)
>  			mtk_dpi_config_swap_input(dpi, true);
>  		mtk_dpi_config_channel_swap(dpi,
> MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> index f7f0272dbd6a..96c117202d0d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> @@ -230,4 +230,7 @@
>  #define EDGE_SEL_EN			BIT(5)
>  #define H_FRE_2N			BIT(25)
>  
> +#define DPI_MATRIX_SET		0xB4
> +#define INT_MATRIX_SEL_MASK	(0x1F << 0)
> +
>  #endif /* __MTK_DPI_REGS_H */
Rex-BC Chen (陳柏辰) June 16, 2022, 10:51 a.m. UTC | #2 
On Tue, 2022-06-14 at 14:20 +0800, CK Hu wrote:
> Hi, Bo-Chen:
> 
> On Mon, 2022-06-13 at 14:48 +0800, Bo-Chen Chen wrote:
> > From: Guillaume Ranquet <granquet@baylibre.com>
> > 
> > Add a mtk_dpi_matrix_sel() helper to update the DPI_MATRIX_SET
> > register depending on the color format.
> 
> Why set DPI_MATRIX_SET? New feature or bug fix? What does this matrix
> work for?
> 
> Regards,
> CK
> 

Matrix selection is a new feature for both dpi and dpintf of MT8195.
I will add this in next version.

> > 
> > Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
> > Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_dpi.c      | 21 +++++++++++++++++++++
> >  drivers/gpu/drm/mediatek/mtk_dpi_regs.h |  3 +++
> >  2 files changed, 24 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > index 9668bd5dd14a..dc355a512963 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > @@ -387,6 +387,25 @@ static void mtk_dpi_config_disable_edge(struct
> > mtk_dpi *dpi)
> >  		mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0,
> > EDGE_SEL_EN);
> >  }
> >  
> > +static void mtk_dpi_matrix_sel(struct mtk_dpi *dpi, enum
> > mtk_dpi_out_color_format format)
> > +{
> > +	u32 matrix_sel = 0;
> > +
> > +	switch (format) {
> > +	case MTK_DPI_COLOR_FORMAT_YCBCR_422:
> > +	case MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL:
> > +	case MTK_DPI_COLOR_FORMAT_YCBCR_444:
> > +	case MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL:
> > +	case MTK_DPI_COLOR_FORMAT_XV_YCC:
> > +		if (dpi->mode.hdisplay <= 720)
> > +			matrix_sel = 0x2;
> > +		break;
> > +	default:
> > +		break;
> > +	}
> > +	mtk_dpi_mask(dpi, DPI_MATRIX_SET, matrix_sel,
> > INT_MATRIX_SEL_MASK);
> > +}
> > +
> >  static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
> >  					enum mtk_dpi_out_color_format
> > format)
> >  {
> > @@ -394,6 +413,7 @@ static void mtk_dpi_config_color_format(struct
> > mtk_dpi *dpi,
> >  	    (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
> >  		mtk_dpi_config_yuv422_enable(dpi, false);
> >  		mtk_dpi_config_csc_enable(dpi, true);
> > +		mtk_dpi_matrix_sel(dpi, format);
> >  		if (dpi->conf->swap_input_support)
> >  			mtk_dpi_config_swap_input(dpi, false);
> >  		mtk_dpi_config_channel_swap(dpi,
> > MTK_DPI_OUT_CHANNEL_SWAP_BGR);
> > @@ -401,6 +421,7 @@ static void mtk_dpi_config_color_format(struct
> > mtk_dpi *dpi,
> >  		   (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
> >  		mtk_dpi_config_yuv422_enable(dpi, true);
> >  		mtk_dpi_config_csc_enable(dpi, true);
> > +		mtk_dpi_matrix_sel(dpi, format);
> >  		if (dpi->conf->swap_input_support)
> >  			mtk_dpi_config_swap_input(dpi, true);
> >  		mtk_dpi_config_channel_swap(dpi,
> > MTK_DPI_OUT_CHANNEL_SWAP_RGB);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > index f7f0272dbd6a..96c117202d0d 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > @@ -230,4 +230,7 @@
> >  #define EDGE_SEL_EN			BIT(5)
> >  #define H_FRE_2N			BIT(25)
> >  
> > +#define DPI_MATRIX_SET		0xB4
> > +#define INT_MATRIX_SEL_MASK	(0x1F << 0)
> > +
> >  #endif /* __MTK_DPI_REGS_H */
> 
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 9668bd5dd14a..dc355a512963 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -387,6 +387,25 @@  static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi)
 		mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN);
 }
 
+static void mtk_dpi_matrix_sel(struct mtk_dpi *dpi, enum mtk_dpi_out_color_format format)
+{
+	u32 matrix_sel = 0;
+
+	switch (format) {
+	case MTK_DPI_COLOR_FORMAT_YCBCR_422:
+	case MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL:
+	case MTK_DPI_COLOR_FORMAT_YCBCR_444:
+	case MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL:
+	case MTK_DPI_COLOR_FORMAT_XV_YCC:
+		if (dpi->mode.hdisplay <= 720)
+			matrix_sel = 0x2;
+		break;
+	default:
+		break;
+	}
+	mtk_dpi_mask(dpi, DPI_MATRIX_SET, matrix_sel, INT_MATRIX_SEL_MASK);
+}
+
 static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
 					enum mtk_dpi_out_color_format format)
 {
@@ -394,6 +413,7 @@  static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
 	    (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
 		mtk_dpi_config_yuv422_enable(dpi, false);
 		mtk_dpi_config_csc_enable(dpi, true);
+		mtk_dpi_matrix_sel(dpi, format);
 		if (dpi->conf->swap_input_support)
 			mtk_dpi_config_swap_input(dpi, false);
 		mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
@@ -401,6 +421,7 @@  static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
 		   (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
 		mtk_dpi_config_yuv422_enable(dpi, true);
 		mtk_dpi_config_csc_enable(dpi, true);
+		mtk_dpi_matrix_sel(dpi, format);
 		if (dpi->conf->swap_input_support)
 			mtk_dpi_config_swap_input(dpi, true);
 		mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
index f7f0272dbd6a..96c117202d0d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
+++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
@@ -230,4 +230,7 @@ 
 #define EDGE_SEL_EN			BIT(5)
 #define H_FRE_2N			BIT(25)
 
+#define DPI_MATRIX_SET		0xB4
+#define INT_MATRIX_SEL_MASK	(0x1F << 0)
+
 #endif /* __MTK_DPI_REGS_H */