| Message ID | 20190807060257.57007-4-jitao.shi@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | add mt8183 dpi driver | expand |
Hi, Jitao: On Wed, 2019-08-07 at 14:02 +0800, Jitao Shi wrote: > The factor depends on the divider of DPI in MT8183, therefore, > we should fix this factor to the right and new one. > Reviewed-by: CK Hu <ck.hu@mediatek.com> > Signed-off-by: Jitao Shi <jitao.shi@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_dpi.c | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c > index 743230864ba0..4f2700cbfdb7 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c > @@ -672,6 +672,16 @@ static unsigned int mt2701_calculate_factor(int clock) > return 1; > } > > +static unsigned int mt8183_calculate_factor(int clock) > +{ > + if (clock <= 27000) > + return 8; > + else if (clock <= 167000) > + return 4; > + else > + return 2; > +} > + > static const struct mtk_dpi_conf mt8173_conf = { > .cal_factor = mt8173_calculate_factor, > .reg_h_fre_con = 0xe0, > @@ -683,6 +693,11 @@ static const struct mtk_dpi_conf mt2701_conf = { > .edge_sel_en = true, > }; > > +static const struct mtk_dpi_conf mt8183_conf = { > + .cal_factor = mt8183_calculate_factor, > + .reg_h_fre_con = 0xe0, > +}; > + > static int mtk_dpi_probe(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > @@ -779,6 +794,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = { > { .compatible = "mediatek,mt8173-dpi", > .data = &mt8173_conf, > }, > + { .compatible = "mediatek,mt8183-dpi", > + .data = &mt8183_conf, > + }, > { }, > }; >
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 743230864ba0..4f2700cbfdb7 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -672,6 +672,16 @@ static unsigned int mt2701_calculate_factor(int clock) return 1; } +static unsigned int mt8183_calculate_factor(int clock) +{ + if (clock <= 27000) + return 8; + else if (clock <= 167000) + return 4; + else + return 2; +} + static const struct mtk_dpi_conf mt8173_conf = { .cal_factor = mt8173_calculate_factor, .reg_h_fre_con = 0xe0, @@ -683,6 +693,11 @@ static const struct mtk_dpi_conf mt2701_conf = { .edge_sel_en = true, }; +static const struct mtk_dpi_conf mt8183_conf = { + .cal_factor = mt8183_calculate_factor, + .reg_h_fre_con = 0xe0, +}; + static int mtk_dpi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -779,6 +794,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = { { .compatible = "mediatek,mt8173-dpi", .data = &mt8173_conf, }, + { .compatible = "mediatek,mt8183-dpi", + .data = &mt8183_conf, + }, { }, };
The factor depends on the divider of DPI in MT8183, therefore, we should fix this factor to the right and new one. Signed-off-by: Jitao Shi <jitao.shi@mediatek.com> --- drivers/gpu/drm/mediatek/mtk_dpi.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)