From: Thierry Reding <treding@xxxxxxxxxx>
Add a conversion helper for the AB24 format to use in drm_fb_blit().
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpu/drm/drm_format_helper.c | 35 +++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 56642816fdff..d564412a816b 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -503,6 +503,36 @@ static void drm_fb_rgb888_to_xrgb8888(struct iosys_map *dst, const unsigned int
drm_fb_rgb888_to_xrgb8888_line);
}
+static void drm_fb_xrgb8888_to_abgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels)
+{
+ __le32 *dbuf32 = dbuf;
+ const __le32 *sbuf32 = sbuf;
+ unsigned int x;
+ u32 pix;
+
+ for (x = 0; x < pixels; x++) {
+ pix = le32_to_cpu(sbuf32[x]);
+ pix = ((pix & 0xff000000) >> 24) << 24 |
+ ((pix & 0x00ff0000) >> 16) << 0 |
+ ((pix & 0x0000ff00) >> 8) << 8 |
+ ((pix & 0x000000ff) >> 0) << 16;
+ *dbuf32++ = cpu_to_le32(pix);
+ }
+}
+
+static void drm_fb_xrgb8888_to_abgr8888(struct iosys_map *dst, const unsigned int *dst_pitch,
+ const struct iosys_map *src,
+ const struct drm_framebuffer *fb,
+ const struct drm_rect *clip)
+{
+ static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = {
+ 4,
+ };
+
+ drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false,
+ drm_fb_xrgb8888_to_abgr8888_line);
+}
+
static void drm_fb_xrgb8888_to_xrgb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
__le32 *dbuf32 = dbuf;
@@ -672,6 +702,11 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
drm_fb_rgb565_to_xrgb8888(dst, dst_pitch, src, fb, clip);
return 0;
}
+ } else if (dst_format == DRM_FORMAT_ABGR8888) {
+ if (fb_format == DRM_FORMAT_XRGB8888) {
+ drm_fb_xrgb8888_to_abgr8888(dst, dst_pitch, src, fb, clip);
+ return 0;
+ }
} else if (dst_format == DRM_FORMAT_XRGB2101010) {
if (fb_format == DRM_FORMAT_XRGB8888) {
drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip);
--
2.37.2
