diff mbox series

[RESEND,v6,10/11] drm/mediatek: gamma: Make sure relay mode is disabled

Message ID 20230727094633.22505-11-angelogioacchino.delregno@collabora.com (mailing list archive)
State New, archived
Headers show
Series MediaTek DDP GAMMA - 12-bit LUT support | expand

Commit Message

AngeloGioacchino Del Regno July 27, 2023, 9:46 a.m. UTC 
Disable relay mode at the end of LUT programming to make sure that the
processed image goes through.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Alexandre Mergnat July 28, 2023, 1:01 p.m. UTC | #1 
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>

On 27/07/2023 11:46, AngeloGioacchino Del Regno wrote:
> Disable relay mode at the end of LUT programming to make sure that the
> processed image goes through.
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
index e0e2d2bdbf59..e9655b661364 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
@@ -20,6 +20,7 @@ 
 #define DISP_GAMMA_EN				0x0000
 #define GAMMA_EN					BIT(0)
 #define DISP_GAMMA_CFG				0x0020
+#define GAMMA_RELAY_MODE				BIT(0)
 #define GAMMA_LUT_EN					BIT(1)
 #define GAMMA_DITHERING					BIT(2)
 #define DISP_GAMMA_SIZE				0x0030
@@ -180,6 +181,9 @@  void mtk_gamma_set_common(struct device *dev, void __iomem *regs, struct drm_crt
 	/* Enable the gamma table */
 	cfg_val |= FIELD_PREP(GAMMA_LUT_EN, 1);
 
+	/* Disable RELAY mode to pass the processed image */
+	cfg_val &= ~GAMMA_RELAY_MODE;
+
 	writel(cfg_val, regs + DISP_GAMMA_CFG);
 }