diff options
| author | Hsiao Chien Sung <shawn.sung@mediatek.com> | 2024-07-17 13:24:43 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2024-07-31 13:25:53 +0000 |
| commit | a3f7f7ef4bfefbbb03cc5e6fa73cd07bdb329bed (patch) | |
| tree | 59e9d3f34e06a83051c1329519f8e48163b23a43 /drivers | |
| parent | eb17c5909481d5950282ca8460e7b7420a4c36a4 (diff) | |
drm/mediatek: Support "Pre-multiplied" blending in OVL
Support "Pre-multiplied" alpha blending mode on in OVL.
Before this patch, only the "coverage" mode is supported.
As whether OVL_CON_CLRFMT_MAN bit is enabled, (3 << 12)
means different formats in the datasheet. To prevent
misunderstandings going forward, instead of reusing
OVL_CON_CLRFMT_RGBA8888, we intetionally defined
OVL_CON_CLRFMT_PARGB8888 with bit operation again.
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240717-alpha-blending-v4-3-4b1c806c0749@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index add671c38613..89b439dcf3a6 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -56,8 +56,12 @@ #define GMC_THRESHOLD_HIGH ((1 << GMC_THRESHOLD_BITS) / 4) #define GMC_THRESHOLD_LOW ((1 << GMC_THRESHOLD_BITS) / 8) +#define OVL_CON_CLRFMT_MAN BIT(23) #define OVL_CON_BYTE_SWAP BIT(24) -#define OVL_CON_MTX_YUV_TO_RGB (6 << 16) + +/* OVL_CON_RGB_SWAP works only if OVL_CON_CLRFMT_MAN is enabled */ +#define OVL_CON_RGB_SWAP BIT(25) + #define OVL_CON_CLRFMT_RGB (1 << 12) #define OVL_CON_CLRFMT_ARGB8888 (2 << 12) #define OVL_CON_CLRFMT_RGBA8888 (3 << 12) @@ -65,6 +69,11 @@ #define OVL_CON_CLRFMT_BGRA8888 (OVL_CON_CLRFMT_ARGB8888 | OVL_CON_BYTE_SWAP) #define OVL_CON_CLRFMT_UYVY (4 << 12) #define OVL_CON_CLRFMT_YUYV (5 << 12) +#define OVL_CON_MTX_YUV_TO_RGB (6 << 16) +#define OVL_CON_CLRFMT_PARGB8888 ((3 << 12) | OVL_CON_CLRFMT_MAN) +#define OVL_CON_CLRFMT_PABGR8888 (OVL_CON_CLRFMT_PARGB8888 | OVL_CON_RGB_SWAP) +#define OVL_CON_CLRFMT_PBGRA8888 (OVL_CON_CLRFMT_PARGB8888 | OVL_CON_BYTE_SWAP) +#define OVL_CON_CLRFMT_PRGBA8888 (OVL_CON_CLRFMT_PABGR8888 | OVL_CON_BYTE_SWAP) #define OVL_CON_CLRFMT_RGB565(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \ 0 : OVL_CON_CLRFMT_RGB) #define OVL_CON_CLRFMT_RGB888(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \ @@ -377,7 +386,8 @@ void mtk_ovl_layer_off(struct device *dev, unsigned int idx, DISP_REG_OVL_RDMA_CTRL(idx)); } -static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt) +static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt, + unsigned int blend_mode) { /* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX" * is defined in mediatek HW data sheet. @@ -398,22 +408,30 @@ static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt) case DRM_FORMAT_RGBA8888: case DRM_FORMAT_RGBX1010102: case DRM_FORMAT_RGBA1010102: - return OVL_CON_CLRFMT_RGBA8888; + return blend_mode == DRM_MODE_BLEND_COVERAGE ? + OVL_CON_CLRFMT_RGBA8888 : + OVL_CON_CLRFMT_PRGBA8888; case DRM_FORMAT_BGRX8888: case DRM_FORMAT_BGRA8888: case DRM_FORMAT_BGRX1010102: case DRM_FORMAT_BGRA1010102: - return OVL_CON_CLRFMT_BGRA8888; + return blend_mode == DRM_MODE_BLEND_COVERAGE ? + OVL_CON_CLRFMT_BGRA8888 : + OVL_CON_CLRFMT_PBGRA8888; case DRM_FORMAT_XRGB8888: case DRM_FORMAT_ARGB8888: case DRM_FORMAT_XRGB2101010: case DRM_FORMAT_ARGB2101010: - return OVL_CON_CLRFMT_ARGB8888; + return blend_mode == DRM_MODE_BLEND_COVERAGE ? + OVL_CON_CLRFMT_ARGB8888 : + OVL_CON_CLRFMT_PARGB8888; case DRM_FORMAT_XBGR8888: case DRM_FORMAT_ABGR8888: case DRM_FORMAT_XBGR2101010: case DRM_FORMAT_ABGR2101010: - return OVL_CON_CLRFMT_ABGR8888; + return blend_mode == DRM_MODE_BLEND_COVERAGE ? + OVL_CON_CLRFMT_ABGR8888 : + OVL_CON_CLRFMT_PABGR8888; case DRM_FORMAT_UYVY: return OVL_CON_CLRFMT_UYVY | OVL_CON_MTX_YUV_TO_RGB; case DRM_FORMAT_YUYV: @@ -453,7 +471,7 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, return; } - con = ovl_fmt_convert(ovl, fmt); + con = ovl_fmt_convert(ovl, fmt, blend_mode); if (state->base.fb) { con |= OVL_CON_AEN; con |= state->base.alpha & OVL_CON_ALPHA; |