[PATCH 2/2] drm: mediatek: Adjust the dpi output format to MT8186

[xinlei.lee]

On Fri, 2022-07-01 at 14:33 +0800, Rex-BC Chen wrote:
> On Fri, 2022-07-01 at 11:15 +0800, xinlei.lee at mediatek.com wrote:
> > From: Xinlei Lee <xinlei.lee at mediatek.com>
> > 
> > Dpi output needs to adjust the output format to dual edge for
> > MT8186.
> > 
> > Signed-off-by: Jitao Shi <jitao.shi at mediatek.com>
> > Signed-off-by: Xinlei Lee <xinlei.lee at mediatek.com>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_dpi.c      | 21 +++++++++++++++++++++
> >  drivers/gpu/drm/mediatek/mtk_dpi_regs.h |  5 +++++
> >  2 files changed, 26 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > index e61cd67b978f..82a5209a1dd8 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> > @@ -15,6 +15,7 @@
> >  #include <linux/pinctrl/consumer.h>
> >  #include <linux/platform_device.h>
> >  #include <linux/types.h>
> > +#include <linux/soc/mediatek/mtk-mmsys.h>
> >  
> 
> Please reorder this.
> 
> >  #include <video/videomode.h>
> >  
> > @@ -28,6 +29,7 @@
> >  #include "mtk_disp_drv.h"
> >  #include "mtk_dpi_regs.h"
> >  #include "mtk_drm_ddp_comp.h"
> > +#include "mtk_drm_drv.h"
> >  
> >  enum mtk_dpi_out_bit_num {
> >  	MTK_DPI_OUT_BIT_NUM_8BITS,
> > @@ -85,6 +87,7 @@ struct mtk_dpi {
> >  	struct pinctrl_state *pins_dpi;
> >  	u32 output_fmt;
> >  	int refcount;
> > +	struct device *mmsys_dev;
> >  };
> >  
> >  static inline struct mtk_dpi *bridge_to_dpi(struct drm_bridge *b)
> > @@ -125,6 +128,7 @@ struct mtk_dpi_conf {
> >  	bool edge_sel_en;
> >  	const u32 *output_fmts;
> >  	u32 num_output_fmts;
> > +	bool rgb888_dual_enable;
> >  };
> >  
> >  static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val,
> > u32 mask)
> > @@ -393,6 +397,9 @@ static void mtk_dpi_dual_edge(struct mtk_dpi
> > *dpi)
> >  		mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,
> >  			     dpi->output_fmt ==
> > MEDIA_BUS_FMT_RGB888_2X12_LE ?
> >  			     EDGE_SEL : 0, EDGE_SEL);
> > +	if (dpi->conf->rgb888_dual_enable)
> > +		mtk_mmsys_ddp_dpi_confing(dpi->mmsys_dev,
> > DPI_RGB888_DDR_CON,
> > +					  DPI_FORMAT_MASK, NULL);
> >  	} else {
> >  		mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE,
> > 0);
> >  	}
> > @@ -705,8 +712,10 @@ static int mtk_dpi_bind(struct device *dev,
> > struct device *master, void *data)
> >  {
> >  	struct mtk_dpi *dpi = dev_get_drvdata(dev);
> >  	struct drm_device *drm_dev = data;
> > +	struct mtk_drm_private *priv = drm_dev->dev_private;
> >  	int ret;
> >  
> > +	dpi->mmsys_dev = priv->mmsys_dev;
> >  	ret = drm_simple_encoder_init(drm_dev, &dpi->encoder,
> >  				      DRM_MODE_ENCODER_TMDS);
> >  	if (ret) {
> > @@ -823,6 +832,15 @@ static const struct mtk_dpi_conf mt8192_conf =
> > {
> >  	.num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
> >  };
> >  
> > +static const struct mtk_dpi_conf mt8186_conf = {
> > +		.cal_factor = mt8183_calculate_factor,
> > +		.reg_h_fre_con = 0xe0,
> > +		.max_clock_khz = 150000,
> > +		.output_fmts = mt8183_output_fmts,
> > +		.num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
> > +		.rgb888_dual_enable = true,
> > +};
> > +
> 
> please put this between 8183 and 8192.
> 
> >  static int mtk_dpi_probe(struct platform_device *pdev)
> >  {
> >  	struct device *dev = &pdev->dev;
> > @@ -945,6 +963,9 @@ static const struct of_device_id
> > mtk_dpi_of_ids[]
> > = {
> >  	{ .compatible = "mediatek,mt8192-dpi",
> >  	  .data = &mt8192_conf,
> >  	},
> > +	{ .compatible = "mediatek,mt8186-dpi",
> > +	  .data = &mt8186_conf,
> > +	},
> 
> ditto
> 
> >  	{ },
> >  };
> >  MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > index 3a02fabe1662..24d4cdf3696b 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_dpi_regs.h
> > @@ -217,4 +217,9 @@
> >  
> >  #define EDGE_SEL_EN			BIT(5)
> >  #define H_FRE_2N			BIT(25)
> > +
> > +#define DPI_FORMAT_MASK			0x1
> > +#define DPI_RGB888_DDR_CON		BIT(0)
> > +#define DPI_RGB565_SDR_CON		BIT(1)
> > +
> >  #endif /* __MTK_DPI_REGS_H */
> 
> 

Hi Rex:

Thanks for your review.
I will sort them in the next version.

Best Regards!
xinlei