Hi, Jason:
jason-jh.lin jason-jh.lin@mediatek.com 於 2021年8月6日 週五 上午4:52寫道：
DSC is designed for real-time systems with real-time compression, transmission, decompression and display. The DSC standard is a specification of the algorithms used for compressing and decompressing image display streams, including the specification of the syntax and semantics of the compressed video bit stream.
Signed-off-by: jason-jh.lin jason-jh.lin@mediatek.com
This patch is base on [1]
[1] dt-bindings: mediatek: add mediatek, dsc.yaml for mt8195 SoC binding https://patchwork.kernel.org/project/linux-mediatek/patch/20210805171346.242...
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 62 +++++++++++++++++++++ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 + 2 files changed, 63 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index 328ee19f931e..24c7b004fe4d 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -43,6 +43,12 @@ #define DITHER_LSB_ERR_SHIFT_G(x) (((x) & 0x7) << 12) #define DITHER_ADD_LSHIFT_G(x) (((x) & 0x7) << 4)
+#define DISP_REG_DSC_CON 0x0000 +#define DSC_EN BIT(0) +#define DSC_DUAL_INOUT BIT(2) +#define DSC_BYPASS BIT(4) +#define DSC_UFOE_SEL BIT(16)
#define DISP_REG_OD_EN 0x0000 #define DISP_REG_OD_CFG 0x0020 #define OD_RELAYMODE BIT(0) @@ -209,6 +215,35 @@ static void mtk_dither_set(struct device *dev, unsigned int bpc, DISP_DITHERING, cmdq_pkt); }
+static void mtk_dsc_config(struct device *dev, unsigned int w,
unsigned int h, unsigned int vrefresh,unsigned int bpc, struct cmdq_pkt *cmdq_pkt)+{
struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);/* dsc bypass mode */mtk_ddp_write_mask(cmdq_pkt, DSC_BYPASS, &priv->cmdq_reg, priv->regs,DISP_REG_DSC_CON, DSC_BYPASS);mtk_ddp_write_mask(cmdq_pkt, DSC_UFOE_SEL, &priv->cmdq_reg, priv->regs,DISP_REG_DSC_CON, DSC_UFOE_SEL);mtk_ddp_write_mask(cmdq_pkt, DSC_DUAL_INOUT, &priv->cmdq_reg, priv->regs,DISP_REG_DSC_CON, DSC_DUAL_INOUT);+}
+static void mtk_dsc_start(struct device *dev) +{
struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);writel_relaxed(DSC_EN, &priv->regs + DISP_REG_DSC_CON);+}
+static void mtk_dsc_stop(struct device *dev) +{
struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);writel_relaxed(0x0, priv->regs + DISP_REG_DSC_CON);+}
static void mtk_od_config(struct device *dev, unsigned int w, unsigned int h, unsigned int vrefresh, unsigned int bpc, struct cmdq_pkt *cmdq_pkt) @@ -272,6 +307,14 @@ static const struct mtk_ddp_comp_funcs ddp_dpi = { .stop = mtk_dpi_stop, };
+static const struct mtk_ddp_comp_funcs ddp_dsc = {
.clk_enable = mtk_ddp_clk_enable,.clk_disable = mtk_ddp_clk_disable,.config = mtk_dsc_config,.start = mtk_dsc_start,.stop = mtk_dsc_stop,+};
static const struct mtk_ddp_comp_funcs ddp_dsi = { .start = mtk_dsi_ddp_start, .stop = mtk_dsi_ddp_stop, @@ -286,6 +329,14 @@ static const struct mtk_ddp_comp_funcs ddp_gamma = { .stop = mtk_gamma_stop, };
+static const struct mtk_ddp_comp_funcs ddp_merge = {
.clk_enable = mtk_merge_clk_enable,.clk_disable = mtk_merge_clk_disable,.start = mtk_merge_start,.stop = mtk_merge_stop,.config = mtk_merge_config,+};
Move the merge modification to the patch of merge.
static const struct mtk_ddp_comp_funcs ddp_od = { .clk_enable = mtk_ddp_clk_enable, .clk_disable = mtk_ddp_clk_disable, @@ -333,7 +384,9 @@ static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = { [MTK_DISP_CCORR] = "ccorr", [MTK_DISP_COLOR] = "color", [MTK_DISP_DITHER] = "dither",
[MTK_DISP_DSC] = "dsc", [MTK_DISP_GAMMA] = "gamma",[MTK_DISP_MERGE] = "merge",
Ditto.
[MTK_DISP_MUTEX] = "mutex", [MTK_DISP_OD] = "od", [MTK_DISP_OVL] = "ovl",@@ -362,11 +415,19 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { [DDP_COMPONENT_DITHER] = { MTK_DISP_DITHER, 0, &ddp_dither }, [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, &ddp_dpi }, [DDP_COMPONENT_DPI1] = { MTK_DPI, 1, &ddp_dpi },
[DDP_COMPONENT_DSC0] = { MTK_DISP_DSC, 0, &ddp_dsc },[DDP_COMPONENT_DSC1] = { MTK_DISP_DSC, 1, &ddp_dsc }, [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, &ddp_dsi }, [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, &ddp_dsi }, [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, &ddp_dsi }, [DDP_COMPONENT_DSI3] = { MTK_DSI, 3, &ddp_dsi }, [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, &ddp_gamma },[DDP_COMPONENT_MERGE0] = { MTK_DISP_MERGE, 0, &ddp_merge },[DDP_COMPONENT_MERGE1] = { MTK_DISP_MERGE, 1, &ddp_merge },[DDP_COMPONENT_MERGE2] = { MTK_DISP_MERGE, 2, &ddp_merge },[DDP_COMPONENT_MERGE3] = { MTK_DISP_MERGE, 3, &ddp_merge },[DDP_COMPONENT_MERGE4] = { MTK_DISP_MERGE, 4, &ddp_merge },[DDP_COMPONENT_MERGE5] = { MTK_DISP_MERGE, 5, &ddp_merge },
Ditto.
[DDP_COMPONENT_OD0] = { MTK_DISP_OD, 0, &ddp_od }, [DDP_COMPONENT_OD1] = { MTK_DISP_OD, 1, &ddp_od }, [DDP_COMPONENT_OVL0] = { MTK_DISP_OVL, 0, &ddp_ovl },@@ -497,6 +558,7 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, type == MTK_DISP_CCORR || type == MTK_DISP_COLOR || type == MTK_DISP_GAMMA ||
type == MTK_DISP_MERGE ||
Ditto.
Regards, Chun-Kuang.
type == MTK_DISP_OVL || type == MTK_DISP_OVL_2L || type == MTK_DISP_PWM ||diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index d317b944df66..560be6bc9d0e 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -23,6 +23,7 @@ enum mtk_ddp_comp_type { MTK_DISP_CCORR, MTK_DISP_COLOR, MTK_DISP_DITHER,
MTK_DISP_DSC, MTK_DISP_GAMMA, MTK_DISP_MUTEX, MTK_DISP_OD,-- 2.18.0