diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2025-06-25 13:48:22 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2025-06-27 15:59:23 +0200 |
| commit | 8ad00a81d769ad81aac0ef65a4adbc2f53169b3c (patch) | |
| tree | 5d3a66b6b3c28252f51248bfaaa421d1a5f5a764 /drivers/gpu/drm/drm_format_internal.h | |
| parent | b462b0ef4d788d56f0e575406e58450358dcbd96 (diff) | |
drm/format-helper: Split off byte swapping from drm_fb_xrgb8888_to_rgb565()
Move big-endian support from drm_fb_xrgb8888_to_rgb565() into the new
helper drm_xrgb8888_to_rgb565be(). The functionality is required for
displays with big-endian byte order. Update all callers.
With the change applied, drm_fb_xrgb8888_to_rgb565() has the same
signature as the other conversion functions, which is required for
further updates to drm_fb_blit(). Also makes the format-conversion
helper available to panic handlers, if necessary.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250625114911.1121301-1-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/drm_format_internal.h')
| -rw-r--r-- | drivers/gpu/drm/drm_format_internal.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_format_internal.h b/drivers/gpu/drm/drm_format_internal.h index 9428d5cfebc5..ce29dd05bcc5 100644 --- a/drivers/gpu/drm/drm_format_internal.h +++ b/drivers/gpu/drm/drm_format_internal.h @@ -5,6 +5,7 @@ #include <linux/bits.h> #include <linux/types.h> +#include <linux/swab.h> /* * Each pixel-format conversion helper takes a raw pixel in a @@ -59,6 +60,11 @@ static inline u32 drm_pixel_xrgb8888_to_rgb565(u32 pix) ((pix & 0x000000f8) >> 3); } +static inline u32 drm_pixel_xrgb8888_to_rgb565be(u32 pix) +{ + return swab16(drm_pixel_xrgb8888_to_rgb565(pix)); +} + static inline u32 drm_pixel_xrgb8888_to_rgbx5551(u32 pix) { return ((pix & 0x00f80000) >> 8) | |