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Date: Thu, 28 Jul 2016 10:22:52 +0800 From: Bibby Hsieh <bibby.hsieh@...iatek.com> To: David Airlie <airlied@...ux.ie>, Matthias Brugger <matthias.bgg@...il.com>, Daniel Vetter <daniel.vetter@...ll.ch>, <dri-devel@...ts.freedesktop.org>, <linux-mediatek@...ts.infradead.org> CC: Yingjoe Chen <yingjoe.chen@...iatek.com>, Cawa Cheng <cawa.cheng@...iatek.com>, Daniel Kurtz <djkurtz@...omium.org>, Bibby Hsieh <bibby.hsieh@...iatek.com>, Philipp Zabel <p.zabel@...gutronix.de>, YT Shen <yt.shen@...iatek.com>, Thierry Reding <thierry.reding@...il.com>, CK Hu <ck.hu@...iatek.com>, Mao Huang <littlecvr@...omium.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, Sascha Hauer <kernel@...gutronix.de> Subject: [PATCH v4 1/4] 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@...iatek.com> --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 29 ++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index 3970fcf..5fc9671 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 }, -- 1.7.9.5
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