DRM: fixed mipi screen color error

Signed-off-by: changhuang.liang <changhuang.liang@starfivetech.com>

2 files changed, 17 insertions, 2 deletions

diff --git a/drivers/gpu/drm/starfive/starfive_drm_dsi.c b/drivers/gpu/drm/starfive/starfive_drm_dsi.c
index c528e9d2092f..7231c468110e 100755
--- a/drivers/gpu/drm/starfive/starfive_drm_dsi.c
+++ b/drivers/gpu/drm/starfive/starfive_drm_dsi.c
@@ -971,6 +971,16 @@ static void cdns_dsi_bridge_enable(struct drm_bridge *bridge)
 	tmp = readl(dsi->regs + MCTL_MAIN_EN) | IF_EN(input->id);
 	writel(tmp, dsi->regs + MCTL_MAIN_EN);
 
+/*here is a special setting for mipi dsi,dsi enable should ahead lcdc enable*/
+/////////////////////////////////////////////////////////////////////////////
+	void __iomem *base_lcdc = ioremap(0x12000000, 0x10000);
+	u32 runcfg = (2 << 2) | 1;
+	u32 cfg = ~(1 << 5);
+
+	writel(runcfg, base_lcdc + 0x0000);
+	writel(cfg, base_lcdc + 0x000C);
+
+/////////////////////////////////////////////////////////////////////////////
 }
 
 static const struct drm_bridge_funcs cdns_dsi_bridge_funcs = {
diff --git a/drivers/gpu/drm/starfive/starfive_drm_lcdc.c b/drivers/gpu/drm/starfive/starfive_drm_lcdc.c
index faf760638b40..20bef9cb6c2e 100755
--- a/drivers/gpu/drm/starfive/starfive_drm_lcdc.c
+++ b/drivers/gpu/drm/starfive/starfive_drm_lcdc.c
@@ -463,6 +463,9 @@ static int sf_fb_lcdc_init(struct starfive_crtc *sf_crtc, struct drm_crtc_state
 int starfive_lcdc_enable(struct starfive_crtc *sf_crtc)
 {
 	struct drm_crtc_state *state = sf_crtc->crtc.state;
+	struct drm_encoder *encoder = NULL;
+
+	encoder = starfive_head_atom_get_encoder(sf_crtc);
 
 	lcdc_disable_intr(sf_crtc);
 
@@ -476,8 +479,10 @@ int starfive_lcdc_enable(struct starfive_crtc *sf_crtc)
 		return -EINVAL;
 	}
 
-	lcdc_run(sf_crtc, sf_crtc->winNum, LCDC_RUN);
-	lcdc_enable_intr(sf_crtc);
+	if (encoder->encoder_type == DRM_MODE_ENCODER_TMDS) {
+		lcdc_run(sf_crtc, sf_crtc->winNum, LCDC_RUN);
+		lcdc_enable_intr(sf_crtc);
+	}
 
 	return 0;
 }