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drm/format-helper: Remove drm_fb_blit()

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The function is unused; remove it.

Instead of relying on a general blit helper, drivers should pick a blit
function by themselves from their list of supported color formats.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20250918154207.84714-4-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-09-18 17:39:51 +02:00
parent cb71de0925
commit 3a33c48876
2 changed files with 0 additions and 95 deletions
Download Patch File Download Diff File Expand all files Collapse all files

91
drivers/gpu/drm/drm_format_helper.c
View File

@@ -1165,97 +1165,6 @@ void drm_fb_argb8888_to_argb4444(struct iosys_map *dst, const unsigned int *dst_
}
EXPORT_SYMBOL(drm_fb_argb8888_to_argb4444);
/**
* drm_fb_blit - Copy parts of a framebuffer to display memory
* @dst: Array of display-memory addresses to copy to
* @dst_pitch: Array of numbers of bytes between the start of two consecutive scanlines
* within @dst; can be NULL if scanlines are stored next to each other.
* @dst_format: FOURCC code of the display's color format
* @src: The framebuffer memory to copy from
* @fb: The framebuffer to copy from
* @clip: Clip rectangle area to copy
* @state: Transform and conversion state
*
* This function copies parts of a framebuffer to display memory. If the
* formats of the display and the framebuffer mismatch, the blit function
* will attempt to convert between them during the process. The parameters @dst,
* @dst_pitch and @src refer to arrays. Each array must have at least as many
* entries as there are planes in @dst_format's format. Each entry stores the
* value for the format's respective color plane at the same index.
*
* This function does not apply clipping on @dst (i.e. the destination is at the
* top-left corner).
*
* Returns:
* 0 on success, or
* -EINVAL if the color-format conversion failed, or
* a negative error code otherwise.
*/
int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state)
{
uint32_t fb_format = fb->format->format;
if (fb_format == dst_format) {
drm_fb_memcpy(dst, dst_pitch, src, fb, clip);
return 0;
} else if (fb_format == (dst_format | DRM_FORMAT_BIG_ENDIAN)) {
drm_fb_swab(dst, dst_pitch, src, fb, clip, false, state);
return 0;
} else if (fb_format == (dst_format & ~DRM_FORMAT_BIG_ENDIAN)) {
drm_fb_swab(dst, dst_pitch, src, fb, clip, false, state);
return 0;
} else if (fb_format == DRM_FORMAT_XRGB8888) {
if (dst_format == DRM_FORMAT_RGB565) {
drm_fb_xrgb8888_to_rgb565(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_XRGB1555) {
drm_fb_xrgb8888_to_xrgb1555(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_ARGB1555) {
drm_fb_xrgb8888_to_argb1555(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_RGBA5551) {
drm_fb_xrgb8888_to_rgba5551(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_RGB888) {
drm_fb_xrgb8888_to_rgb888(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_BGR888) {
drm_fb_xrgb8888_to_bgr888(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_ARGB8888) {
drm_fb_xrgb8888_to_argb8888(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_XBGR8888) {
drm_fb_xrgb8888_to_xbgr8888(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_ABGR8888) {
drm_fb_xrgb8888_to_abgr8888(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_XRGB2101010) {
drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_ARGB2101010) {
drm_fb_xrgb8888_to_argb2101010(dst, dst_pitch, src, fb, clip, state);
return 0;
} else if (dst_format == DRM_FORMAT_BGRX8888) {
drm_fb_swab(dst, dst_pitch, src, fb, clip, false, state);
return 0;
} else if (dst_format == DRM_FORMAT_RGB332) {
drm_fb_xrgb8888_to_rgb332(dst, dst_pitch, src, fb, clip, state);
return 0;
}
}
drm_warn_once(fb->dev, "No conversion helper from %p4cc to %p4cc found.\n",
&fb_format, &dst_format);
return -EINVAL;
}
EXPORT_SYMBOL(drm_fb_blit);
static void drm_fb_gray8_to_gray2_line(void *dbuf, const void *sbuf, unsigned int pixels)
{
u8 *dbuf8 = dbuf;

4
include/drm/drm_format_helper.h
View File

@@ -128,10 +128,6 @@ void drm_fb_argb8888_to_argb4444(struct iosys_map *dst, const unsigned int *dst_
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);
void drm_fb_xrgb8888_to_mono(struct iosys_map *dst, const unsigned int *dst_pitch,
const struct iosys_map *src, const struct drm_framebuffer *fb,
const struct drm_rect *clip, struct drm_format_conv_state *state);