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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>
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37b2a2149b
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0664d1392c
1 changed files with 28 additions and 1 deletions
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@ -38,6 +38,9 @@
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#define DISP_COLOR_WIDTH 0x0c50
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#define DISP_COLOR_HEIGHT 0x0c54
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#define DISP_AAL_EN 0x0000
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#define DISP_AAL_SIZE 0x0030
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#define OD_RELAY_MODE BIT(0)
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#define UFO_BYPASS BIT(2)
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@ -45,6 +48,8 @@
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#define COLOR_BYPASS_ALL BIT(7)
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#define COLOR_SEQ_SEL BIT(13)
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#define AAL_EN BIT(0)
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static void mtk_color_config(struct mtk_ddp_comp *comp, unsigned int w,
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unsigned int h, unsigned int vrefresh)
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{
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@ -76,6 +81,28 @@ static void mtk_ufoe_start(struct mtk_ddp_comp *comp)
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writel(UFO_BYPASS, comp->regs + DISP_REG_UFO_START);
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}
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static void mtk_aal_config(struct mtk_ddp_comp *comp, unsigned int w,
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unsigned int h, unsigned int vrefresh)
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{
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writel(h << 16 | w, comp->regs + DISP_AAL_SIZE);
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}
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static void mtk_aal_start(struct mtk_ddp_comp *comp)
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{
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writel(AAL_EN, comp->regs + DISP_AAL_EN);
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}
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static void mtk_aal_stop(struct mtk_ddp_comp *comp)
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{
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writel_relaxed(0x0, comp->regs + DISP_AAL_EN);
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}
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static const struct mtk_ddp_comp_funcs ddp_aal = {
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.config = mtk_aal_config,
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.start = mtk_aal_start,
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.stop = mtk_aal_stop,
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};
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static const struct mtk_ddp_comp_funcs ddp_color = {
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.config = mtk_color_config,
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.start = mtk_color_start,
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@ -112,7 +139,7 @@ struct mtk_ddp_comp_match {
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};
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static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = {
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[DDP_COMPONENT_AAL] = { MTK_DISP_AAL, 0, NULL },
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[DDP_COMPONENT_AAL] = { MTK_DISP_AAL, 0, &ddp_aal },
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[DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, &ddp_color },
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[DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, &ddp_color },
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[DDP_COMPONENT_DPI0] = { MTK_DPI, 0, NULL },
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