There is now a drm_fb_xrgb8888_to_mono_reversed() helper function to do
format conversion from XRGB8888 to reversed monochrome.
Use that helper and remove the open coded version in the repaper driver.
Signed-off-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
---
This was only built tested because I don't have access to the hardware.
drivers/gpu/drm/tiny/repaper.c | 24 +-----------------------
1 file changed, 1 insertion(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/tiny/repaper.c b/drivers/gpu/drm/tiny/repaper.c
index 97a775c48cea..5c74e236b16d 100644
--- a/drivers/gpu/drm/tiny/repaper.c
+++ b/drivers/gpu/drm/tiny/repaper.c
@@ -508,26 +508,6 @@ static void repaper_get_temperature(struct repaper_epd *epd)
epd->factored_stage_time = epd->stage_time * factor10x / 10;
}
-static void repaper_gray8_to_mono_reversed(u8 *buf, u32 width, u32 height)
-{
- u8 *gray8 = buf, *mono = buf;
- int y, xb, i;
-
- for (y = 0; y < height; y++)
- for (xb = 0; xb < width / 8; xb++) {
- u8 byte = 0x00;
-
- for (i = 0; i < 8; i++) {
- int x = xb * 8 + i;
-
- byte >>= 1;
- if (gray8[y * width + x] >> 7)
- byte |= BIT(7);
- }
- *mono++ = byte;
- }
-}
-
static int repaper_fb_dirty(struct drm_framebuffer *fb)
{
struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
@@ -560,12 +540,10 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb)
if (ret)
goto out_free;
- drm_fb_xrgb8888_to_gray8(buf, 0, cma_obj->vaddr, fb, &clip);
+ drm_fb_xrgb8888_to_mono_reversed(buf, 0, cma_obj->vaddr, fb, &clip);
drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE);
- repaper_gray8_to_mono_reversed(buf, fb->width, fb->height);
-
if (epd->partial) {
repaper_frame_data_repeat(epd, buf, epd->current_frame,
REPAPER_NORMAL);
--
2.34.1
