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| author | Bibby Hsieh <bibby.hsieh@mediatek.com> | 2016-07-28 10:22:54 +0800 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-08-11 10:52:22 +0200 |
| commit | 2f3f4dda747c0619594d13996e65598ab675c60c (patch) | |
| tree | 7eeecac304f67c6007d8c3f2da969c8183ff66dc /drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | |
| parent | e0a5d33702451329b7da70a15fad3b919e441401 (diff) | |
| download | op-kernel-dev-2f3f4dda747c0619594d13996e65598ab675c60c.zip op-kernel-dev-2f3f4dda747c0619594d13996e65598ab675c60c.tar.gz | |
drm/mediatek: Add gamma correction.
Add gamma set function to correct brightness values.
It applies arbitrary mapping curve to compensate the
incorrect transfer function of the panel.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 6b13ba9..f4b7e0a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -21,6 +21,7 @@ struct device_node; struct drm_crtc; struct drm_device; struct mtk_plane_state; +struct drm_crtc_state; enum mtk_ddp_comp_type { MTK_DISP_OVL, @@ -73,6 +74,8 @@ struct mtk_ddp_comp_funcs { void (*layer_off)(struct mtk_ddp_comp *comp, unsigned int idx); void (*layer_config)(struct mtk_ddp_comp *comp, unsigned int idx, struct mtk_plane_state *state); + void (*gamma_set)(struct mtk_ddp_comp *comp, + struct drm_crtc_state *state); }; struct mtk_ddp_comp { @@ -139,6 +142,13 @@ static inline void mtk_ddp_comp_layer_config(struct mtk_ddp_comp *comp, comp->funcs->layer_config(comp, idx, state); } +static inline void mtk_ddp_gamma_set(struct mtk_ddp_comp *comp, + struct drm_crtc_state *state) +{ + if (comp->funcs && comp->funcs->gamma_set) + comp->funcs->gamma_set(comp, state); +} + int mtk_ddp_comp_get_id(struct device_node *node, enum mtk_ddp_comp_type comp_type); int mtk_ddp_comp_init(struct device *dev, struct device_node *comp_node, |
