From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Oliver Graute <oliver.graute@kococonnector.com>,
Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Subject: [PATCH 4.9 03/14] staging: fbtft: fb_st7789v: reset display before initialization
Date: Fri, 25 Mar 2022 16:04:31 +0100 [thread overview]
Message-ID: <20220325150415.797537014@linuxfoundation.org> (raw)
In-Reply-To: <20220325150415.694544076@linuxfoundation.org>
From: Oliver Graute <oliver.graute@kococonnector.com>
commit b6821b0d9b56386d2bf14806f90ec401468c799f upstream.
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>
Link: https://lore.kernel.org/r/20220210085322.15676-1-oliver.graute@kococonnector.com
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/fbtft/fb_st7789v.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -85,6 +85,8 @@ enum st7789v_command {
*/
static int init_display(struct fbtft_par *par)
{
+ par->fbtftops.reset(par);
+
/* turn off sleep mode */
write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE);
mdelay(120);
next prev parent reply other threads:[~2022-03-25 15:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-25 15:04 [PATCH 4.9 00/14] 4.9.309-rc1 review Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 01/14] nfc: st21nfca: Fix potential buffer overflows in EVT_TRANSACTION Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 02/14] net: ipv6: fix skb_over_panic in __ip6_append_data Greg Kroah-Hartman
2022-03-25 15:04 ` Greg Kroah-Hartman [this message]
2022-03-25 15:04 ` [PATCH 4.9 04/14] llc: fix netdevice reference leaks in llc_ui_bind() Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 05/14] ALSA: pcm: Add stream lock during PCM reset ioctl operations Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 06/14] ALSA: usb-audio: Add mute TLV for playback volumes on RODE NT-USB Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 07/14] ALSA: cmipci: Restore aux vol on suspend/resume Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 08/14] ALSA: pci: fix reading of swapped values from pcmreg in AC97 codec Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 09/14] netfilter: nf_tables: initialize registers in nft_do_chain() Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 10/14] ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 11/14] ACPI: battery: Add device HID and quirk for Microsoft Surface Go 3 Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 12/14] ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 13/14] crypto: qat - disable registration of algorithms Greg Kroah-Hartman
2022-03-25 15:04 ` [PATCH 4.9 14/14] mac80211: fix potential double free on mesh join Greg Kroah-Hartman
2022-03-25 18:39 ` [PATCH 4.9 00/14] 4.9.309-rc1 review Pavel Machek
2022-03-25 21:31 ` Florian Fainelli
2022-03-26 0:00 ` Florian Fainelli
2022-03-28 14:33 ` James Morse
2022-03-26 6:59 ` Greg Kroah-Hartman
2022-03-25 23:26 ` Shuah Khan
2022-03-26 14:50 ` Naresh Kamboju
2022-03-27 0:50 ` Guenter Roeck
2022-03-28 14:24 ` Jon Hunter
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