On 14/10/2025 22:08, Francesco Valla wrote:
Add drm_draw_can_convert_from_xrgb8888() function that can be used to
determine if a XRGB8888 color can be converted to the specified format.
Thanks for the v2, it looks good to me.
Reviewed-by: Jocelyn Falempe <[email protected]>
Signed-off-by: Francesco Valla <[email protected]>
---
drivers/gpu/drm/drm_draw.c | 29 +++++++++++++++++++++++++++++
drivers/gpu/drm/drm_draw_internal.h | 2 ++
2 files changed, 31 insertions(+)
diff --git a/drivers/gpu/drm/drm_draw.c b/drivers/gpu/drm/drm_draw.c
index
9dc0408fbbeadbe8282a2d6b210e0bfb0672967f..ccdd6b16e73fc01d58f45759cf3824be7aac155b
100644
--- a/drivers/gpu/drm/drm_draw.c
+++ b/drivers/gpu/drm/drm_draw.c
@@ -15,6 +15,35 @@
#include "drm_draw_internal.h"
#include "drm_format_internal.h"
+/**
+ * drm_draw_can_convert_from_xrgb8888 - check if xrgb8888 can be converted to
the desired format
+ * @format: format
+ *
+ * Returns:
+ * True if XRGB8888 can be converted to the specified format, false otherwise.
+ */
+bool drm_draw_can_convert_from_xrgb8888(u32 format)
+{
+ switch (format) {
+ case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_RGBA5551:
+ case DRM_FORMAT_XRGB1555:
+ case DRM_FORMAT_ARGB1555:
+ case DRM_FORMAT_RGB888:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_XRGB2101010:
+ case DRM_FORMAT_ARGB2101010:
+ case DRM_FORMAT_ABGR2101010:
+ return true;
+ default:
+ return false;
+ }
+}
+EXPORT_SYMBOL(drm_draw_can_convert_from_xrgb8888);
+
/**
* drm_draw_color_from_xrgb8888 - convert one pixel from xrgb8888 to the
desired format
* @color: input color, in xrgb8888 format
diff --git a/drivers/gpu/drm/drm_draw_internal.h
b/drivers/gpu/drm/drm_draw_internal.h
index
f121ee7339dc11537f677c833f0ee94fe0e799cd..2ab4cb341df94fc4173dd6f5e7a512bdcfa5e55c
100644
--- a/drivers/gpu/drm/drm_draw_internal.h
+++ b/drivers/gpu/drm/drm_draw_internal.h
@@ -24,6 +24,8 @@ static inline const u8 *drm_draw_get_char_bitmap(const struct
font_desc *font,
return font->data + (c * font->height) * font_pitch;
}
+bool drm_draw_can_convert_from_xrgb8888(u32 format);
+
u32 drm_draw_color_from_xrgb8888(u32 color, u32 format);
void drm_draw_blit16(struct iosys_map *dmap, unsigned int dpitch,
