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Subject[PATCH v2 12/25] drm/mediatek: add component DITHER
Date
From: Yongqiang Niu <yongqiang.niu@mediatek.com>

This patch add component DITHER

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 32 +++++++++++++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 2 ++
2 files changed, 34 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index 24152e5..afd6ca2 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -47,6 +47,12 @@
#define CCORR_RELAY_MODE BIT(0)
#define DISP_CCORR_SIZE 0x0030

+#define DISP_DITHER_EN 0x0000
+#define DITHER_EN BIT(0)
+#define DISP_DITHER_CFG 0x0020
+#define DITHER_RELAY_MODE BIT(0)
+#define DISP_DITHER_SIZE 0x0030
+
#define DISP_GAMMA_EN 0x0000
#define DISP_GAMMA_CFG 0x0020
#define DISP_GAMMA_SIZE 0x0030
@@ -155,6 +161,24 @@ static void mtk_ccorr_stop(struct mtk_ddp_comp *comp)
writel_relaxed(0x0, comp->regs + DISP_CCORR_EN);
}

+static void mtk_dither_config(struct mtk_ddp_comp *comp, unsigned int w,
+ unsigned int h, unsigned int vrefresh,
+ unsigned int bpc)
+{
+ writel(h << 16 | w, comp->regs + DISP_DITHER_SIZE);
+ writel(DITHER_RELAY_MODE, comp->regs + DISP_DITHER_CFG);
+}
+
+static void mtk_dither_start(struct mtk_ddp_comp *comp)
+{
+ writel(DITHER_EN, comp->regs + DISP_DITHER_EN);
+}
+
+static void mtk_dither_stop(struct mtk_ddp_comp *comp)
+{
+ writel_relaxed(0x0, comp->regs + DISP_DITHER_EN);
+}
+
static void mtk_gamma_config(struct mtk_ddp_comp *comp, unsigned int w,
unsigned int h, unsigned int vrefresh,
unsigned int bpc)
@@ -209,6 +233,12 @@ static void mtk_gamma_set(struct mtk_ddp_comp *comp,
.stop = mtk_ccorr_stop,
};

+static const struct mtk_ddp_comp_funcs ddp_dither = {
+ .config = mtk_dither_config,
+ .start = mtk_dither_start,
+ .stop = mtk_dither_stop,
+};
+
static const struct mtk_ddp_comp_funcs ddp_gamma = {
.gamma_set = mtk_gamma_set,
.config = mtk_gamma_config,
@@ -234,6 +264,7 @@ static void mtk_gamma_set(struct mtk_ddp_comp *comp,
[MTK_DISP_CCORR] = "ccorr",
[MTK_DISP_AAL] = "aal",
[MTK_DISP_GAMMA] = "gamma",
+ [MTK_DISP_DITHER] = "dither",
[MTK_DISP_UFOE] = "ufoe",
[MTK_DSI] = "dsi",
[MTK_DPI] = "dpi",
@@ -256,6 +287,7 @@ struct mtk_ddp_comp_match {
[DDP_COMPONENT_CCORR] = { MTK_DISP_CCORR, 0, &ddp_ccorr },
[DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, NULL },
[DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, NULL },
+ [DDP_COMPONENT_DITHER] = { MTK_DISP_DITHER, 0, &ddp_dither },
[DDP_COMPONENT_DPI0] = { MTK_DPI, 0, NULL },
[DDP_COMPONENT_DPI1] = { MTK_DPI, 1, NULL },
[DDP_COMPONENT_DSI0] = { MTK_DSI, 0, NULL },
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index 2c1b006..b76b663 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -30,6 +30,7 @@ enum mtk_ddp_comp_type {
MTK_DISP_WDMA,
MTK_DISP_COLOR,
MTK_DISP_CCORR,
+ MTK_DISP_DITHER,
MTK_DISP_AAL,
MTK_DISP_GAMMA,
MTK_DISP_UFOE,
@@ -49,6 +50,7 @@ enum mtk_ddp_comp_id {
DDP_COMPONENT_CCORR,
DDP_COMPONENT_COLOR0,
DDP_COMPONENT_COLOR1,
+ DDP_COMPONENT_DITHER,
DDP_COMPONENT_DPI0,
DDP_COMPONENT_DPI1,
DDP_COMPONENT_DSI0,
--
1.8.1.1.dirty
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