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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_crtc.c | |
| 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_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 24aa3ba..e3ac280 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -409,6 +409,9 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc, } if (pending_planes) mtk_crtc->pending_planes = true; + if (crtc->state->color_mgmt_changed) + for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) + mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state); } static const struct drm_crtc_funcs mtk_crtc_funcs = { @@ -418,6 +421,7 @@ static const struct drm_crtc_funcs mtk_crtc_funcs = { .reset = mtk_drm_crtc_reset, .atomic_duplicate_state = mtk_drm_crtc_duplicate_state, .atomic_destroy_state = mtk_drm_crtc_destroy_state, + .gamma_set = drm_atomic_helper_legacy_gamma_set, }; static const struct drm_crtc_helper_funcs mtk_crtc_helper_funcs = { @@ -568,7 +572,8 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, &mtk_crtc->planes[1].base, pipe); if (ret < 0) goto unprepare; - + 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); priv->crtc[pipe] = &mtk_crtc->base; priv->num_pipes++; |
