diff options
| author | Bibby Hsieh <bibby.hsieh@mediatek.com> | 2016-07-28 10:22:52 +0800 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-08-11 08:41:39 +0200 |
| commit | 0664d1392c26a8bfcdd6c6f0ff7c63eb0e1a10b0 (patch) | |
| tree | f641341325f1a26007bebba87ebdd76168159720 /drivers/gpu/drm | |
| parent | 37b2a2149bd39d80b2e2724e370f83c934eeff15 (diff) | |
drm/mediatek: Add AAL engine basic function
In order to correct brightness values, we have
to support gamma funciton on MT8173. In MT8173,
we have two engines for supporting gamma function:
AAL and GAMMA. This patch add some AAL engine
basic function, include config, start and stop
function.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index 3970fcf0f05f..5fc967157cb8 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -38,6 +38,9 @@ #define DISP_COLOR_WIDTH 0x0c50 #define DISP_COLOR_HEIGHT 0x0c54 +#define DISP_AAL_EN 0x0000 +#define DISP_AAL_SIZE 0x0030 + #define OD_RELAY_MODE BIT(0) #define UFO_BYPASS BIT(2) @@ -45,6 +48,8 @@ #define COLOR_BYPASS_ALL BIT(7) #define COLOR_SEQ_SEL BIT(13) +#define AAL_EN BIT(0) + static void mtk_color_config(struct mtk_ddp_comp *comp, unsigned int w, unsigned int h, unsigned int vrefresh) { @@ -76,6 +81,28 @@ static void mtk_ufoe_start(struct mtk_ddp_comp *comp) writel(UFO_BYPASS, comp->regs + DISP_REG_UFO_START); } +static void mtk_aal_config(struct mtk_ddp_comp *comp, unsigned int w, + unsigned int h, unsigned int vrefresh) +{ + writel(h << 16 | w, comp->regs + DISP_AAL_SIZE); +} + +static void mtk_aal_start(struct mtk_ddp_comp *comp) +{ + writel(AAL_EN, comp->regs + DISP_AAL_EN); +} + +static void mtk_aal_stop(struct mtk_ddp_comp *comp) +{ + writel_relaxed(0x0, comp->regs + DISP_AAL_EN); +} + +static const struct mtk_ddp_comp_funcs ddp_aal = { + .config = mtk_aal_config, + .start = mtk_aal_start, + .stop = mtk_aal_stop, +}; + static const struct mtk_ddp_comp_funcs ddp_color = { .config = mtk_color_config, .start = mtk_color_start, @@ -112,7 +139,7 @@ struct mtk_ddp_comp_match { }; static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { - [DDP_COMPONENT_AAL] = { MTK_DISP_AAL, 0, NULL }, + [DDP_COMPONENT_AAL] = { MTK_DISP_AAL, 0, &ddp_aal }, [DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, &ddp_color }, [DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, &ddp_color }, [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, NULL }, |