Re: [PATCH v3] pinctrl:intel: Retain HOSTSW_OWN for requested gpio pin
- Date: Mon, 15 Apr 2019 22:25:09 +0300
- From: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
- Subject: Re: [PATCH v3] pinctrl:intel: Retain HOSTSW_OWN for requested gpio pin
On Mon, Apr 15, 2019 at 01:53:58PM +0800, Chris Chiu wrote:
> The touchpad of the ASUS laptops E403NA, X540NA, X541NA are not
> responsive after suspend/resume. The following error message
> shows after resume.
> i2c_hid i2c-ELAN1200:00: failed to reset device.
> On these laptops, the touchpad interrupt is connected via a GPIO
> pin which is controlled by Intel pinctrl. After system resumes,
> the GPIO is in ACPI mode and no longer works as an IRQ.
> This commit saves the HOSTSW_OWN value during suspend, make sure
> the HOSTSW_OWN mode remains the same after resume.
> Signed-off-by: Chris Chiu <chiu@xxxxxxxxxxxx>
Acked-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>