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gpu: ipu-v3: add support for 15-bit RGB with 1-bit alpha formats 

This patch adds support for ARGB1555, ABGR1555, RGBA5551, and BGRA5551
in-memory formats.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
hifive-unleashed-5.1
Philipp Zabel 2014-12-12 13:40:14 +01:00
parent ef739aa4c6
commit 0cb8b75792
2 changed files with 48 additions and 0 deletions
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4
drivers/gpu/ipu-v3/ipu-common.c
View File

@ -57,6 +57,10 @@ EXPORT_SYMBOL_GPL(ipu_srm_dp_sync_update);
enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
{
switch (drm_fourcc) {
case DRM_FORMAT_ARGB1555:
case DRM_FORMAT_ABGR1555:
case DRM_FORMAT_RGBA5551:
case DRM_FORMAT_BGRA5551:
case DRM_FORMAT_RGB565:
case DRM_FORMAT_BGR565:
case DRM_FORMAT_RGB888:

44
drivers/gpu/ipu-v3/ipu-cpmem.c
View File

@ -500,6 +500,38 @@ static const struct ipu_rgb def_bgr_16 = {
.bits_per_pixel = 16,
};
static const struct ipu_rgb def_argb_16 = {
.red = { .offset = 10, .length = 5, },
.green = { .offset = 5, .length = 5, },
.blue = { .offset = 0, .length = 5, },
.transp = { .offset = 15, .length = 1, },
.bits_per_pixel = 16,
};
static const struct ipu_rgb def_abgr_16 = {
.red = { .offset = 0, .length = 5, },
.green = { .offset = 5, .length = 5, },
.blue = { .offset = 10, .length = 5, },
.transp = { .offset = 15, .length = 1, },
.bits_per_pixel = 16,
};
static const struct ipu_rgb def_rgba_16 = {
.red = { .offset = 11, .length = 5, },
.green = { .offset = 6, .length = 5, },
.blue = { .offset = 1, .length = 5, },
.transp = { .offset = 0, .length = 1, },
.bits_per_pixel = 16,
};
static const struct ipu_rgb def_bgra_16 = {
.red = { .offset = 1, .length = 5, },
.green = { .offset = 6, .length = 5, },
.blue = { .offset = 11, .length = 5, },
.transp = { .offset = 0, .length = 1, },
.bits_per_pixel = 16,
};
#define Y_OFFSET(pix, x, y) ((x) + pix->width * (y))
#define U_OFFSET(pix, x, y) ((pix->width * pix->height) + \
(pix->width * (y) / 4) + (x) / 2)
@ -581,6 +613,18 @@ int ipu_cpmem_set_fmt(struct ipuv3_channel *ch, u32 drm_fourcc)
case DRM_FORMAT_BGR565:
ipu_cpmem_set_format_rgb(ch, &def_bgr_16);
break;
case DRM_FORMAT_ARGB1555:
ipu_cpmem_set_format_rgb(ch, &def_argb_16);
break;
case DRM_FORMAT_ABGR1555:
ipu_cpmem_set_format_rgb(ch, &def_abgr_16);
break;
case DRM_FORMAT_RGBA5551:
ipu_cpmem_set_format_rgb(ch, &def_rgba_16);
break;
case DRM_FORMAT_BGRA5551:
ipu_cpmem_set_format_rgb(ch, &def_bgra_16);
break;
default:
return -EINVAL;
}