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Subject[PATCH v2 11/15] drm/mediatek: add callback function to return OVL layer number
Date
This patch add callback function to return OVL layer number

Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
---
drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index 978782a77629..a42cfa057f42 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -58,6 +58,7 @@
struct mtk_disp_ovl_data {
unsigned int addr;
bool fmt_rgb565_is_0;
+ unsigned int layer_nr;
};

/**
@@ -132,6 +133,13 @@ static void mtk_ovl_config(struct mtk_ddp_comp *comp, unsigned int w,
writel(0x0, comp->regs + DISP_REG_OVL_RST);
}

+static unsigned int mtk_ovl_layer_nr(struct mtk_ddp_comp *comp)
+{
+ struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
+
+ return ovl->data->layer_nr;
+}
+
static void mtk_ovl_layer_on(struct mtk_ddp_comp *comp, unsigned int idx)
{
unsigned int reg;
@@ -221,6 +229,7 @@ static const struct mtk_ddp_comp_funcs mtk_disp_ovl_funcs = {
.stop = mtk_ovl_stop,
.enable_vblank = mtk_ovl_enable_vblank,
.disable_vblank = mtk_ovl_disable_vblank,
+ .layer_nr = mtk_ovl_layer_nr,
.layer_on = mtk_ovl_layer_on,
.layer_off = mtk_ovl_layer_off,
.layer_config = mtk_ovl_layer_config,
@@ -319,6 +328,7 @@ static const struct mtk_disp_ovl_data mt2701_ovl_driver_data = {
static const struct mtk_disp_ovl_data mt8173_ovl_driver_data = {
.addr = DISP_REG_OVL_ADDR_MT8173,
.fmt_rgb565_is_0 = true,
+ .layer_nr = 4,
};

static const struct of_device_id mtk_disp_ovl_driver_dt_match[] = {
--
2.12.5.2.gbdf23ab
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