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| author | Javier Martinez Canillas <javierm@redhat.com> | 2022-02-14 14:37:06 +0100 |
|---|---|---|
| committer | Javier Martinez Canillas <javierm@redhat.com> | 2022-02-16 13:29:04 +0100 |
| commit | bcf8b616deb8794179e3e9c6233a53f42664afb2 (patch) | |
| tree | 061f4a873d7777ef66883657ad6183e74617011b /LICENSES/preferred | |
| parent | 4a564e59bfb7732ec168f66ee77bf1eb81ff9319 (diff) | |
| download | linux-bcf8b616deb8794179e3e9c6233a53f42664afb2.tar.bz2 | |
drm/format-helper: Add drm_fb_xrgb8888_to_mono_reversed()
Add support to convert from XR24 to reversed monochrome for drivers that
control monochromatic display panels, that only have 1 bit per pixel.
The function does a line-by-line conversion doing an intermediate step
first from XR24 to 8-bit grayscale and then to reversed monochrome.
The drm_fb_gray8_to_mono_reversed_line() helper was based on code from
drivers/gpu/drm/tiny/repaper.c driver.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220214133710.3278506-3-javierm@redhat.com
Diffstat (limited to 'LICENSES/preferred')
0 files changed, 0 insertions, 0 deletions