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drm/draw: add drm_draw_can_convert_from_xrgb8888

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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.

Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Signed-off-by: Francesco Valla <francesco@valla.it>
Link: https://patch.msgid.link/20251217-drm_draw_conv_check-v3-1-15b6f8bc1cbc@valla.it
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
This commit is contained in:
Francesco Valla 2025-12-17 09:06:54 +01:00 committed by Jocelyn Falempe
parent 8e7460eac7
commit c2b40b1a4f
2 changed files with 31 additions and 0 deletions
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29
drivers/gpu/drm/drm_draw.c
View File

@ -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

2
drivers/gpu/drm/drm_draw_internal.h
View File

@ -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,