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drm/mediatek: add RGB color format support for RDMA 

This patch add RGB color format support for RDMA,
including RGB565, RGB888, RGBA8888 and ARGB8888.

Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
Stu Hsieh 2018-08-09 10:15:41 +08:00 committed by CK Hu
parent 182add0b1b
commit b428391ed6
1 changed files with 45 additions and 0 deletions
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45
drivers/gpu/drm/mediatek/mtk_disp_rdma.c
View File

@ -35,6 +35,12 @@
#define DISP_REG_RDMA_SIZE_CON_0 0x0014
#define DISP_REG_RDMA_SIZE_CON_1 0x0018
#define DISP_REG_RDMA_TARGET_LINE 0x001c
#define DISP_RDMA_MEM_CON 0x0024
#define MEM_MODE_INPUT_FORMAT_RGB565 (0x000 << 4)
#define MEM_MODE_INPUT_FORMAT_RGB888 (0x001 << 4)
#define MEM_MODE_INPUT_FORMAT_RGBA8888 (0x002 << 4)
#define MEM_MODE_INPUT_FORMAT_ARGB8888 (0x003 << 4)
#define MEM_MODE_INPUT_SWAP BIT(8)
#define DISP_RDMA_MEM_SRC_PITCH 0x002c
#define DISP_RDMA_MEM_GMC_SETTING_0 0x0030
#define DISP_REG_RDMA_FIFO_CON 0x0040
@ -144,12 +150,51 @@ static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width,
writel(reg, comp->regs + DISP_REG_RDMA_FIFO_CON);
}
static unsigned int rdma_fmt_convert(struct mtk_disp_rdma *rdma,
unsigned int fmt)
{
/* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
* is defined in mediatek HW data sheet.
* The alphabet order in XXX is no relation to data
* arrangement in memory.
*/
switch (fmt) {
default:
case DRM_FORMAT_RGB565:
return MEM_MODE_INPUT_FORMAT_RGB565;
case DRM_FORMAT_BGR565:
return MEM_MODE_INPUT_FORMAT_RGB565 | MEM_MODE_INPUT_SWAP;
case DRM_FORMAT_RGB888:
return MEM_MODE_INPUT_FORMAT_RGB888;
case DRM_FORMAT_BGR888:
return MEM_MODE_INPUT_FORMAT_RGB888 | MEM_MODE_INPUT_SWAP;
case DRM_FORMAT_RGBX8888:
case DRM_FORMAT_RGBA8888:
return MEM_MODE_INPUT_FORMAT_ARGB8888;
case DRM_FORMAT_BGRX8888:
case DRM_FORMAT_BGRA8888:
return MEM_MODE_INPUT_FORMAT_ARGB8888 | MEM_MODE_INPUT_SWAP;
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
return MEM_MODE_INPUT_FORMAT_RGBA8888;
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_ABGR8888:
return MEM_MODE_INPUT_FORMAT_RGBA8888 | MEM_MODE_INPUT_SWAP;
}
}
static void mtk_rdma_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
struct mtk_plane_state *state)
{
struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
struct mtk_plane_pending_state *pending = &state->pending;
unsigned int addr = pending->addr;
unsigned int pitch = pending->pitch & 0xffff;
unsigned int fmt = pending->format;
unsigned int con;
con = rdma_fmt_convert(rdma, fmt);
writel_relaxed(con, comp->regs + DISP_RDMA_MEM_CON);
writel_relaxed(addr, comp->regs + DISP_RDMA_MEM_START_ADDR);
writel_relaxed(pitch, comp->regs + DISP_RDMA_MEM_SRC_PITCH);