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| author | Marcus Folkesson <marcus.folkesson@gmail.com> | 2025-09-13 08:09:40 +0200 |
|---|---|---|
| committer | Javier Martinez Canillas <javierm@redhat.com> | 2025-10-03 12:01:50 +0200 |
| commit | eb0ed2ad33e740ac8b0d7211b24e1ddd543c2519 (patch) | |
| tree | 3b7850e466c6b06a066b5aefb4268f1727d796d7 | |
| parent | 0f2efbe6d8305b91c9b2c92ebaf8c24a614bc305 (diff) | |
| download | linux-next-eb0ed2ad33e740ac8b0d7211b24e1ddd543c2519.tar.gz linux-next-eb0ed2ad33e740ac8b0d7211b24e1ddd543c2519.zip | |
drm/sitronix/st7571-i2c: reset position before clearing display
We cannot know where the write pointer is, always reset position to
(0,0) before clearing display.
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://lore.kernel.org/r/20250913-st7571-reset-v1-1-ae5f58acdf8d@gmail.com
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/sitronix/st7571-i2c.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sitronix/st7571-i2c.c b/drivers/gpu/drm/sitronix/st7571-i2c.c index a6c4a6738ded..32b91d65b768 100644 --- a/drivers/gpu/drm/sitronix/st7571-i2c.c +++ b/drivers/gpu/drm/sitronix/st7571-i2c.c @@ -263,6 +263,7 @@ static int st7571_fb_clear_screen(struct st7571_device *st7571) u32 npixels = st7571->ncols * round_up(st7571->nlines, ST7571_PAGE_HEIGHT) * st7571->bpp; char pixelvalue = 0x00; + st7571_set_position(st7571, 0, 0); for (int i = 0; i < npixels; i++) regmap_bulk_write(st7571->regmap, ST7571_DATA_MODE, &pixelvalue, 1); |