[PATCH v3 06/12] drm/mediatek: add dpi driver for mt2701 and mt7623

[Bibby Hsieh]

From: chunhui dai <chunhui.dai@xxxxxxxxxxxx>

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.

Signed-off-by: chunhui dai <chunhui.dai@xxxxxxxxxxxx>
---
 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 7a4868a0afec..a9d8231a0a9e 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -688,11 +688,29 @@ 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;
@@ -784,6 +802,9 @@ 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