16 Feb
2022
16 Feb
'22
9:16 a.m.
On Mon, Feb 14, 2022 at 02:37:06PM +0100, Javier Martinez Canillas wrote:
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
Maxime