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>
Thu, 12 Apr 2018 10:32:20 +0000 (12:32 +0200)
commit88f6f0490f8ca3683e51b9fc0f901b0f2424d07f
tree205c9e5db02541a2f3cbad20166d583b178b948c
parentc427d7e44a32f2fbb2103007cf07f592a215947a
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