From: Thierry Reding <treding@xxxxxxxxxx>
Add a conversion helper for the AB24 and XB24 formats to use in
drm_fb_blit().
Reviewed-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
Changes in v4:
- rebased on top of latest drm-format-helper rework, add back AB24 support
- add Reviewed-by from Thomas
Changes in v3:
- rebase onto latest drm-next
Changes in v2:
- support XB24 format instead of AB24
drivers/gpu/drm/drm_format_helper.c | 66 +++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index 994f8fb71f45..f93a4efcee90 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -649,6 +649,66 @@ void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_
}
EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb8888);
+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 & 0x00ff0000) >> 16) << 0 |
+ ((pix & 0x0000ff00) >> 8) << 8 |
+ ((pix & 0x000000ff) >> 0) << 16 |
+ GENMASK(31, 24); /* fill alpha bits */
+ *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_xbgr8888_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 & 0x00ff0000) >> 16) << 0 |
+ ((pix & 0x0000ff00) >> 8) << 8 |
+ ((pix & 0x000000ff) >> 0) << 16 |
+ ((pix & 0xff000000) >> 24) << 24;
+ *dbuf32++ = cpu_to_le32(pix);
+ }
+}
+
+static void drm_fb_xrgb8888_to_xbgr8888(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_xbgr8888_line);
+}
+
static void drm_fb_xrgb8888_to_xrgb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
__le32 *dbuf32 = dbuf;
@@ -868,6 +928,12 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d
} else if (dst_format == DRM_FORMAT_ARGB8888) {
drm_fb_xrgb8888_to_argb8888(dst, dst_pitch, src, fb, clip);
return 0;
+ } else if (dst_format == DRM_FORMAT_XBGR8888) {
+ drm_fb_xrgb8888_to_xbgr8888(dst, dst_pitch, src, fb, clip);
+ return 0;
+ } else if (dst_format == DRM_FORMAT_ABGR8888) {
+ drm_fb_xrgb8888_to_abgr8888(dst, dst_pitch, src, fb, clip);
+ return 0;
} else if (dst_format == DRM_FORMAT_XRGB2101010) {
drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip);
return 0;
--
2.39.0
