From: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
Not all SoC has dither function in gamma module.
Add private data to control this function setting.
Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
---
drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
index 6b520807921e3..5092a27ccc28b 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
@@ -27,7 +27,7 @@
#define LUT_10BIT_MASK 0x03ff
struct mtk_disp_gamma_data {
- u32 reserved;
+ bool has_dither;
};
/**
@@ -93,8 +93,9 @@ void mtk_gamma_config(struct device *dev, unsigned int w,
mtk_ddp_write(cmdq_pkt, h << 16 | w, &gamma->cmdq_reg, gamma->regs,
DISP_GAMMA_SIZE);
- mtk_dither_set_common(gamma->regs, &gamma->cmdq_reg, bpc, DISP_GAMMA_CFG,
- GAMMA_DITHERING, cmdq_pkt);
+ if (gamma->data && gamma->data->has_dither)
+ mtk_dither_set_common(gamma->regs, &gamma->cmdq_reg, bpc,
+ DISP_GAMMA_CFG, GAMMA_DITHERING, cmdq_pkt);
}
void mtk_gamma_start(struct device *dev)
@@ -174,8 +175,13 @@ static int mtk_disp_gamma_remove(struct platform_device *pdev)
return 0;
}
+static const struct mtk_disp_gamma_data mt8173_gamma_driver_data = {
+ .has_dither = true,
+};
+
static const struct of_device_id mtk_disp_gamma_driver_dt_match[] = {
- { .compatible = "mediatek,mt8173-disp-gamma"},
+ { .compatible = "mediatek,mt8173-disp-gamma",
+ .data = &mt8173_gamma_driver_data},
{},
};
MODULE_DEVICE_TABLE(of, mtk_disp_gamma_driver_dt_match);
--
2.30.0.365.g02bc693789-goog
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