Hi, Jason:
jason-jh.lin jason-jh.lin@mediatek.com 於 2021年9月21日 週二 下午11:52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.
Reviewed-by: Chun-Kuang Hu chunkuang.hu@kernel.org
Signed-off-by: jason-jh.lin jason-jh.lin@mediatek.com
rebase on series [1]
[1] drm/mediatek: add support for mediatek SOC MT8192
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 47 +++++++++++++++++++++ drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 + 2 files changed, 48 insertions(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index 23c03e550658..ce6c90b9edef 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -40,6 +40,12 @@ #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) @@ -181,6 +187,36 @@ 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);/* write with mask to reserve the value set in mtk_dsc_config */mtk_ddp_write_mask(NULL, DSC_EN, &priv->cmdq_reg, priv->regs, DISP_REG_DSC_CON, DSC_EN);+}
+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) @@ -270,6 +306,14 @@ 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, @@ -339,6 +383,7 @@ 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_MUTEX] = "mutex", [MTK_DISP_OD] = "od",@@ -369,6 +414,8 @@ 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 },diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 4c6a98662305..5e6ff12f16ad 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