| Message ID | 20220327223927.20848-17-granquet@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/mediatek: Add mt8195 DisplayPort driver | expand |
On Mon, 2022-03-28 at 00:39 +0200, Guillaume Ranquet wrote: > 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> > --- > drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c > b/drivers/gpu/drm/mediatek/mtk_dpi.c > index 8198d3cf23ac..82f97c687652 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c > @@ -385,6 +385,25 @@ 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) > { > @@ -392,6 +411,7 @@ 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); > @@ -399,6 +419,7 @@ 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); Hello Guillaume, Thanks for your patch. I have one question: Do this setting affect the dpi for previous SoCs? (8183, 8192, or 8186) If we can confirm the original register setting for this offset in 8183/8192/8186, I think we can clarify this question. BRs, Rex
On Mon, 28 Mar 2022 10:49, Rex-BC Chen <rex-bc.chen@mediatek.com> wrote: >On Mon, 2022-03-28 at 00:39 +0200, Guillaume Ranquet wrote: >> 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> >> --- >> drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +++++++++++++++++++++ >> 1 file changed, 21 insertions(+) >> >> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c >> b/drivers/gpu/drm/mediatek/mtk_dpi.c >> index 8198d3cf23ac..82f97c687652 100644 >> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c >> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c >> @@ -385,6 +385,25 @@ 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) >> { >> @@ -392,6 +411,7 @@ 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); >> @@ -399,6 +419,7 @@ 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); > >Hello Guillaume, > >Thanks for your patch. >I have one question: >Do this setting affect the dpi for previous SoCs? >(8183, 8192, or 8186) >If we can confirm the original register setting for this offset in >8183/8192/8186, I think we can clarify this question. > I've checked in the datasheet I have (8365/8385) that this register and setting exists. So yes, it will affect other platforms. >BRs, >Rex >
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 8198d3cf23ac..82f97c687652 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -385,6 +385,25 @@ 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) { @@ -392,6 +411,7 @@ 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); @@ -399,6 +419,7 @@ 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);
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> --- drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)