From: Oliver Graute <oliver.graute@kococonnector.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dennis Menschel <menschel-d@posteo.de>
Cc: Oliver Graute <oliver.graute@kococonnector.com>,
stable@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: [PATCH v1] staging: fbtft: fb_st7789v: reset display before initialization
Date: Thu, 10 Feb 2022 09:53:22 +0100 [thread overview]
Message-ID: <20220210085322.15676-1-oliver.graute@kococonnector.com> (raw)
In rare cases the display is flipped or mirrored. This was observed more
often in a low temperature environment. A clean reset on init_display()
should help to get registers in a sane state.
Fixes: ef8f317795da (staging: fbtft: use init function instead of init sequence)
Cc: stable@vger.kernel.org
Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
---
drivers/staging/fbtft/fb_st7789v.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
index 3a280cc1892c..0a2dbed9ffc7 100644
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -82,6 +82,8 @@ enum st7789v_command {
{
int rc;
+ par->fbtftops.reset(par);
+
rc = init_tearing_effect_line(par);
if (rc)
return rc;
--
2.17.1
next reply other threads:[~2022-02-10 9:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-10 8:53 Oliver Graute [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-08-13 12:59 [PATCH v1] staging: fbtft: fb_st7789v: reset display before initialization Oliver Graute
2021-08-13 15:00 ` Greg KH
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