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>
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index e5a38d2..c0b1916 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -57,6 +57,10 @@
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:
diff --git a/drivers/gpu/ipu-v3/ipu-cpmem.c b/drivers/gpu/ipu-v3/ipu-cpmem.c
index 3bf05bc..d26b8be 100644
--- a/drivers/gpu/ipu-v3/ipu-cpmem.c
+++ b/drivers/gpu/ipu-v3/ipu-cpmem.c
@@ -500,6 +500,38 @@
.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 @@
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;
}