Input: goodix - disable IRQs while suspended
authorHans de Goede <hdegoede@redhat.com>
Fri, 12 Jan 2018 08:36:48 +0000 (00:36 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 13 Apr 2018 17:48:31 +0000 (19:48 +0200)
commit2a584051aba85f3fbb246c01429df073db3e3f2f
tree55328538e6655b53a9fb98e6c6ce0b5d321b4ede
parent905348d08acd1d35d270f49090c3ac1d2c4bc374
Input: goodix - disable IRQs while suspended

[ Upstream commit faec44b6838312484d63e82286087cf2d5ebb891 ]

We should not try to do any i2c transfers before the controller is
resumed (which happens before our resume method gets called).

So we need to disable our IRQ while suspended to enforce this. The
code paths for devices with GPIOs for the int and reset pins already
disable the IRQ the through goodix_free_irq().

This commit also disables the IRQ while suspended for devices without
GPIOs for the int and reset pins.

This fixes the i2c bus sometimes getting stuck after a suspend/resume
causing the touchscreen to sometimes not work after a suspend/resume.
This has been tested on a GPD pocked device.

BugLink: https://github.com/nexus511/gpd-ubuntu-packages/issues/10
BugLink: https://www.reddit.com/r/GPDPocket/comments/7niut2/fix_for_broken_touch_after_resume_all_linux/
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/input/touchscreen/goodix.c