drm/mediatek: Add gamma property according to hardware capability (4cebc1de) · Commits · 戴 / test

If there is no gamma function in the crtc display path, don't add gamma property for crtc Fixes: ("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>

drivers/gpu/drm/mediatek/mtk_drm_crtc.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -730,6 +730,7 @@ 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;
		@@ -780,6 +781,9 @@ 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;
		}

		for (i = 0; i < mtk_crtc->ddp_comp_nr; i++)
		@@ -800,8 +804,10 @@ 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++;
		mutex_init(&mtk_crtc->hw_lock);

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