[PATCH] pinctrl: qcom: support gpio_chip .set_config call

[Shawn Guo <shawn.guo@xxxxxxxxxx>]

In case of ACPI boot, GPIO core does the right thing to parse GPIO pin
configs from ACPI table, and call into gpio_chip's .set_config hook for
setting them up.  It enables such support on qcom platform by using
generic config function, which in turn calls into .pin_config_set of
pinconf for setting up hardware.  For qcom platform, it's possible to
reuse pin group config functions for pin config hooks, because every pin
is maintained as a single group.

This change fixes the problem that Touchpad of Lenovo Flex 5G laptop
doesn't work with ACPI boot, because PullUp config of Touchpad GpioInt
pin is not set up by kernel driver.

Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
---
 drivers/pinctrl/qcom/pinctrl-msm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index a591be9f380a..2526f299bdce 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -493,6 +493,8 @@ static const struct pinconf_ops msm_pinconf_ops = {
 	.is_generic		= true,
 	.pin_config_group_get	= msm_config_group_get,
 	.pin_config_group_set	= msm_config_group_set,
+	.pin_config_get		= msm_config_group_get,
+	.pin_config_set		= msm_config_group_set,
 };
 
 static int msm_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -717,6 +719,7 @@ static const struct gpio_chip msm_gpio_template = {
 	.get_direction    = msm_gpio_get_direction,
 	.get              = msm_gpio_get,
 	.set              = msm_gpio_set,
+	.set_config       = gpiochip_generic_config,
 	.request          = gpiochip_generic_request,
 	.free             = gpiochip_generic_free,
 	.dbg_show         = msm_gpio_dbg_show,
-- 
2.17.1