Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.4 01/14] video: ssd1307fb: Start page range at page_offset | Date | Tue, 24 Sep 2019 12:51:59 -0400 |
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From: Marko Kohtala <marko.kohtala@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.kohtala@okoko.fi> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190618074111.9309-4-marko.kohtala@okoko.fi Signed-off-by: Sasha Levin <sashal@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 fa3480815cdb6..88e0763edcc72 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -421,7 +421,7 @@ 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
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