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drm/mediatek: Add mtk_dither_set_common() function 

Current implementation of mtk_dither_set() cast dev data to
struct mtk_ddp_comp_dev. But other devices with different dev data
would also call this function.

Separate necessary parameters out so other device components (dither,
gamma) can call this function.

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Hsin-Yi Wang 2021-01-29 17:22:04 +08:00 committed by Chun-Kuang Hu
parent e1e4f7fea3
commit a6b7c98afd
2 changed files with 22 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/mediatek/mtk_disp_drv.h
View File

@ -17,6 +17,10 @@ void mtk_color_config(struct device *dev, unsigned int w,
unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
void mtk_color_start(struct device *dev);
void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
unsigned int bpc, unsigned int cfg,
unsigned int dither_en, struct cmdq_pkt *cmdq_pkt);
void mtk_dpi_start(struct device *dev);
void mtk_dpi_stop(struct device *dev);

27
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
View File

@ -151,33 +151,42 @@ static void mtk_ddp_clk_disable(struct device *dev)
clk_disable_unprepare(priv->clk);
}
static void mtk_dither_set(struct device *dev, unsigned int bpc,
unsigned int CFG, struct cmdq_pkt *cmdq_pkt)
{
struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
void mtk_dither_set_common(void __iomem *regs, struct cmdq_client_reg *cmdq_reg,
unsigned int bpc, unsigned int cfg,
unsigned int dither_en, struct cmdq_pkt *cmdq_pkt)
{
/* If bpc equal to 0, the dithering function didn't be enabled */
if (bpc == 0)
return;
if (bpc >= MTK_MIN_BPC) {
mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_DITHER_5);
mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, DISP_DITHER_7);
mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_5);
mtk_ddp_write(cmdq_pkt, 0, cmdq_reg, regs, DISP_DITHER_7);
mtk_ddp_write(cmdq_pkt,
DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) |
DITHER_ADD_LSHIFT_R(MTK_MAX_BPC - bpc) |
DITHER_NEW_BIT_MODE,
&priv->cmdq_reg, priv->regs, DISP_DITHER_15);
cmdq_reg, regs, DISP_DITHER_15);
mtk_ddp_write(cmdq_pkt,
DITHER_LSB_ERR_SHIFT_B(MTK_MAX_BPC - bpc) |
DITHER_ADD_LSHIFT_B(MTK_MAX_BPC - bpc) |
DITHER_LSB_ERR_SHIFT_G(MTK_MAX_BPC - bpc) |
DITHER_ADD_LSHIFT_G(MTK_MAX_BPC - bpc),
&priv->cmdq_reg, priv->regs, DISP_DITHER_16);
mtk_ddp_write(cmdq_pkt, DISP_DITHERING, &priv->cmdq_reg, priv->regs, CFG);
cmdq_reg, regs, DISP_DITHER_16);
mtk_ddp_write(cmdq_pkt, dither_en, cmdq_reg, regs, cfg);
}
}
static void mtk_dither_set(struct device *dev, unsigned int bpc,
unsigned int cfg, struct cmdq_pkt *cmdq_pkt)
{
struct mtk_ddp_comp_dev *priv = dev_get_drvdata(dev);
mtk_dither_set_common(priv->regs, &priv->cmdq_reg, bpc, cfg,
DISP_DITHERING, cmdq_pkt);
}
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)