mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-27 19:29:37 +00:00
Code Issues Releases Wiki Activity

drm/mediatek: Enable OVL_LAYER_SMI_ID_EN for multi-layer usecase

Browse source 
Enable OVL_LAYER_SMI_ID_EN for multi-layer usecase, without this patch,
ovl will hang up when more than 1 layer enabled.

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Yongqiang Niu 2021-01-29 15:34:32 +08:00 committed by Chun-Kuang Hu
parent 641ef9e7be
commit d41ff4dcf0
1 changed files with 17 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/gpu/drm/mediatek/mtk_disp_ovl.c
View file

@ -24,6 +24,7 @@
#define DISP_REG_OVL_RST 0x0014
#define DISP_REG_OVL_ROI_SIZE 0x0020
#define DISP_REG_OVL_DATAPATH_CON 0x0024
#define OVL_LAYER_SMI_ID_EN BIT(0)
#define OVL_BGCLR_SEL_IN BIT(2)
#define DISP_REG_OVL_ROI_BGCLR 0x0028
#define DISP_REG_OVL_SRC_CON 0x002c
@ -62,6 +63,7 @@ struct mtk_disp_ovl_data {
unsigned int gmc_bits;
unsigned int layer_nr;
bool fmt_rgb565_is_0;
bool smi_id_en;
};
/**
@ -134,6 +136,13 @@ void mtk_ovl_start(struct device *dev)
{
struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
if (ovl->data->smi_id_en) {
unsigned int reg;
reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
reg = reg | OVL_LAYER_SMI_ID_EN;
writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
}
writel_relaxed(0x1, ovl->regs + DISP_REG_OVL_EN);
}
@ -142,6 +151,14 @@ void mtk_ovl_stop(struct device *dev)
struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_EN);
if (ovl->data->smi_id_en) {
unsigned int reg;
reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
reg = reg & ~OVL_LAYER_SMI_ID_EN;
writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
}
}
void mtk_ovl_config(struct device *dev, unsigned int w,