[PATCH v1 3/7] drm/mediatek: add dpi driver for mt2701 and mt7623

Bibby Hsieh
2018-05-14T07:52:39Z

From: chunhui dai <chunhui.dai@mediatek.com>

This patch adds dpi driver 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@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_dpi.c | 24 ++++++++++++++++++++++--
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 2b8b34c72697..e1af1d0d213d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -640,8 +640,7 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
}
drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);

- /* Currently DPI0 is fixed to be driven by OVL1 */
- dpi->encoder.possible_crtcs = BIT(1);
+ dpi->encoder.possible_crtcs = BIT(0) | BIT(1);
dpi->encoder.bridge->encoder = &dpi->encoder;
ret = drm_bridge_attach(&dpi->encoder, dpi->encoder.bridge, NULL);
if (ret) {
@@ -690,12 +689,33 @@ static unsigned int mt8173_calculate_factor(int clock)
return 2 * 3;
}

+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 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 a2ca90fc403c..f4fb86ab7b8d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -372,6 +372,7 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
{ .compatible = "mediatek,mt8173-disp-ufoe", .data = (void *)MTK_DISP_UFOE },
{ .compatible = "mediatek,mt2701-dsi", .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", .data = (void *)MTK_DISP_MUTEX },
{ .compatible = "mediatek,mt8173-disp-mutex", .data = (void *)MTK_DISP_MUTEX },
--
2.12.5