diff options
| author | Bibby Hsieh <bibby.hsieh@mediatek.com> | 2016-07-28 10:22:53 +0800 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-08-11 08:41:39 +0200 |
| commit | e0a5d33702451329b7da70a15fad3b919e441401 (patch) | |
| tree | b3b68e74e1dbc7bcaf3d4eef31324d9389dce338 /drivers/gpu/drm | |
| parent | 0664d1392c26a8bfcdd6c6f0ff7c63eb0e1a10b0 (diff) | |
drm/mediatek: Add GAMMA 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 GAMMA 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 5fc967157cb8..ba895c8fd91d 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -41,6 +41,9 @@ #define DISP_AAL_EN 0x0000 #define DISP_AAL_SIZE 0x0030 +#define DISP_GAMMA_EN 0x0000 +#define DISP_GAMMA_SIZE 0x0030 + #define OD_RELAY_MODE BIT(0) #define UFO_BYPASS BIT(2) @@ -50,6 +53,8 @@ #define AAL_EN BIT(0) +#define GAMMA_EN BIT(0) + static void mtk_color_config(struct mtk_ddp_comp *comp, unsigned int w, unsigned int h, unsigned int vrefresh) { @@ -97,12 +102,34 @@ static void mtk_aal_stop(struct mtk_ddp_comp *comp) writel_relaxed(0x0, comp->regs + DISP_AAL_EN); } +static void mtk_gamma_config(struct mtk_ddp_comp *comp, unsigned int w, + unsigned int h, unsigned int vrefresh) +{ + writel(h << 16 | w, comp->regs + DISP_GAMMA_SIZE); +} + +static void mtk_gamma_start(struct mtk_ddp_comp *comp) +{ + writel(GAMMA_EN, comp->regs + DISP_GAMMA_EN); +} + +static void mtk_gamma_stop(struct mtk_ddp_comp *comp) +{ + writel_relaxed(0x0, comp->regs + DISP_GAMMA_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_gamma = { + .config = mtk_gamma_config, + .start = mtk_gamma_start, + .stop = mtk_gamma_stop, +}; + static const struct mtk_ddp_comp_funcs ddp_color = { .config = mtk_color_config, .start = mtk_color_start, @@ -145,7 +172,7 @@ static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, NULL }, [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, NULL }, [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, NULL }, - [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, NULL }, + [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, &ddp_gamma }, [DDP_COMPONENT_OD] = { MTK_DISP_OD, 0, &ddp_od }, [DDP_COMPONENT_OVL0] = { MTK_DISP_OVL, 0, NULL }, [DDP_COMPONENT_OVL1] = { MTK_DISP_OVL, 1, NULL }, |