[PATCH v4 06/11] drm/mediatek: add dpi driver for mt2701 and mt7623

Bibby Hsieh
2018-10-02T08:10:36Z

This patch adds dpi dirver suppot for both mt2701 and mt7623.
And also support other (existing or future) chips that use
the same binding and driver.

Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +++++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
2 files changed, 23 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 08915e1765f8..62a9d47df948 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -659,11 +659,29 @@ static unsigned int mt8173_calculate_factor(int clock)
return 3 << 1;
}

+static unsigned int mt2701_calculate_factor(int clock)
+{
+ if (clock <= 64000)
+ return 16;
+ else if (clock <= 128000)
+ return 8;
+ else if (clock <= 256000)
+ return 4;
+ else
+ return 2;
+}
+
static const struct mtk_dpi_conf mt8173_conf = {
.cal_factor = mt8173_calculate_factor,
.reg_h_fre_con = 0xe0,
};

+static const struct mtk_dpi_conf mt2701_conf = {
+ .cal_factor = mt2701_calculate_factor,
+ .reg_h_fre_con = 0xb0,
+ .edge_sel_en = true,
+};
+
static int mtk_dpi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -753,6 +771,9 @@ static int mtk_dpi_remove(struct platform_device *pdev)
}

static const struct of_device_id mtk_dpi_of_ids[] = {
+ { .compatible = "mediatek,mt2701-dpi",
+ .data = &mt2701_conf,
+ },
{ .compatible = "mediatek,mt8173-dpi",
.data = &mt8173_conf,
},
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 39721119713b..d961112fa2f5 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -424,6 +424,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
.data = (void *)MTK_DSI },
{ .compatible = "mediatek,mt8173-dsi",
.data = (void *)MTK_DSI },
+ { .compatible = "mediatek,mt2701-dpi",
+ .data = (void *)MTK_DPI },
{ .compatible = "mediatek,mt8173-dpi",
.data = (void *)MTK_DPI },
{ .compatible = "mediatek,mt2701-disp-mutex",
--
2.12.5.2.gbdf23ab