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drm/mediatek: Add gamma property according to hardware capability 

[ Upstream commit 4cebc1de50 ]

If there is no gamma function in the crtc
display path, don't add gamma property
for crtc

Fixes: 2f3f4dda74 ("drm/mediatek: Add gamma correction.")
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Yongqiang Niu 2019-12-13 15:28:51 +08:00 committed by Greg Kroah-Hartman
parent 6ceef50235
commit bfe29951e2
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/mediatek/mtk_drm_crtc.c
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@ -537,6 +537,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
int pipe = priv->num_pipes;
int ret;
int i;
uint gamma_lut_size = 0;
if (!path)
return 0;
@ -587,6 +588,9 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
}
mtk_crtc->ddp_comp[i] = comp;
if (comp->funcs && comp->funcs->gamma_set)
gamma_lut_size = MTK_LUT_SIZE;
}
mtk_crtc->layer_nr = mtk_ddp_comp_layer_nr(mtk_crtc->ddp_comp[0]);
@ -609,8 +613,10 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
NULL, pipe);
if (ret < 0)
return ret;
drm_mode_crtc_set_gamma_size(&mtk_crtc->base, MTK_LUT_SIZE);
drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, false, MTK_LUT_SIZE);
if (gamma_lut_size)
drm_mode_crtc_set_gamma_size(&mtk_crtc->base, gamma_lut_size);
drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, false, gamma_lut_size);
priv->num_pipes++;
return 0;