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 at mediatek.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
