From: Marko Kohtala <marko.koht...@okoko.fi>
[ Upstream commit dd9782834dd9dde3624ff1acea8859f3d3e792d4 ]
The page_offset was only applied to the end of the page range. This caused
the display updates to cause a scrolling effect on the display because the
amount of data written to the display did not match the range display
expected.
Fixes: 301bc0675b67 ("video: ssd1307fb: Make use of horizontal addressing mode")
Signed-off-by: Marko Kohtala <marko.koht...@okoko.fi>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Rob Herring <robh...@kernel.org>
Cc: Daniel Vetter <dan...@ffwll.ch>
Cc: David Airlie <airl...@linux.ie>
Cc: Michal Vokáč <michal.vo...@ysoft.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnier...@samsung.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20190618074111.9309-4-marko.koht...@okoko.fi
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/video/fbdev/ssd1307fb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 2925d5ce8d3e5..1267b93c03bd0 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -430,7 +430,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
if (ret < 0)
return ret;
- ret = ssd1307fb_write_cmd(par->client, 0x0);
+ ret = ssd1307fb_write_cmd(par->client, par->page_offset);
if (ret < 0)
return ret;
--
2.20.1
