diff options
| author | Guillaume Ranquet <granquet@baylibre.com> | 2022-07-01 06:58:35 +0300 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2022-07-04 17:26:12 +0300 |
| commit | cf060519e48e7ca9844325d73bc3225182ac6223 (patch) | |
| tree | 981668ae7dc1512b0d1d7ff5487536db9469cb21 /drivers/gpu/drm/mediatek | |
| parent | 4393c74a88cdbf36d8ccc315af09eae1bbe47ae2 (diff) | |
| download | linux-cf060519e48e7ca9844325d73bc3225182ac6223.tar.xz | |
drm/mediatek: dpi: Implement a CK/DE pol toggle in SoC config
Dp_intf does not support CK/DE polarity because the polarity information
is not used for eDP and DP while dp_intf is only for eDP and DP.
Therefore, we add a bit of flexibility to support SoCs without CK/DE pol
support.
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220701035845.16458-7-rex-bc.chen@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/mediatek')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_dpi.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index d0e0152456d1..9b17507fe5d4 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -120,6 +120,7 @@ struct mtk_dpi_yc_limit { * @edge_sel_en: Enable of edge selection. * @output_fmts: Array of supported output formats. * @num_output_fmts: Quantity of supported output formats. + * @is_ck_de_pol: Support CK/DE polarity. */ struct mtk_dpi_conf { unsigned int (*cal_factor)(int clock); @@ -128,6 +129,7 @@ struct mtk_dpi_conf { bool edge_sel_en; const u32 *output_fmts; u32 num_output_fmts; + bool is_ck_de_pol; }; static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask) @@ -213,13 +215,20 @@ static void mtk_dpi_config_pol(struct mtk_dpi *dpi, struct mtk_dpi_polarities *dpi_pol) { unsigned int pol; + unsigned int mask; - pol = (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ? 0 : CK_POL) | - (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ? 0 : DE_POL) | - (dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) | + mask = HSYNC_POL | VSYNC_POL; + pol = (dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) | (dpi_pol->vsync_pol == MTK_DPI_POLARITY_RISING ? 0 : VSYNC_POL); - mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol, - CK_POL | DE_POL | HSYNC_POL | VSYNC_POL); + if (dpi->conf->is_ck_de_pol) { + mask |= CK_POL | DE_POL; + pol |= (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ? + 0 : CK_POL) | + (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ? + 0 : DE_POL); + } + + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol, mask); } static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d) @@ -794,6 +803,7 @@ static const struct mtk_dpi_conf mt8173_conf = { .max_clock_khz = 300000, .output_fmts = mt8173_output_fmts, .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts), + .is_ck_de_pol = true, }; static const struct mtk_dpi_conf mt2701_conf = { @@ -803,6 +813,7 @@ static const struct mtk_dpi_conf mt2701_conf = { .max_clock_khz = 150000, .output_fmts = mt8173_output_fmts, .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts), + .is_ck_de_pol = true, }; static const struct mtk_dpi_conf mt8183_conf = { @@ -811,6 +822,7 @@ static const struct mtk_dpi_conf mt8183_conf = { .max_clock_khz = 100000, .output_fmts = mt8183_output_fmts, .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts), + .is_ck_de_pol = true, }; static const struct mtk_dpi_conf mt8192_conf = { @@ -819,6 +831,7 @@ static const struct mtk_dpi_conf mt8192_conf = { .max_clock_khz = 150000, .output_fmts = mt8183_output_fmts, .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts), + .is_ck_de_pol = true, }; static int mtk_dpi_probe(struct platform_device *pdev) |