[PATCH v2 1/4] gpio: qcom: add direction functions for pwrkey

[Dzmitry Sankouski]

GPIO button driver requires direction functions to probe
button gpio. Those functions are blank, since pwrkey gpio
configured earlier not by u-boot.

Signed-off-by: Dzmitry Sankouski <dsankouski at gmail.com>
---
Changes for v2:
- none

 drivers/gpio/qcom_pmic_gpio.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/gpio/qcom_pmic_gpio.c b/drivers/gpio/qcom_pmic_gpio.c
index 3be1be8692..e46377ce3b 100644
--- a/drivers/gpio/qcom_pmic_gpio.c
+++ b/drivers/gpio/qcom_pmic_gpio.c
@@ -303,9 +303,24 @@ static int qcom_pwrkey_get_value(struct udevice *dev, unsigned offset)
 	}
 }
 
+/*
+ * Power button already configured as input by previous bootloader.
+ */
+static int qcom_pwrkey_direction_input(struct udevice *dev, unsigned int offset)
+{
+	return 0;
+}
+
+static int qcom_pwrkey_direction_output(struct udevice *dev, unsigned int offset, int value)
+{
+	return -EOPNOTSUPP;
+}
+
 static const struct dm_gpio_ops qcom_pwrkey_ops = {
 	.get_value		= qcom_pwrkey_get_value,
 	.get_function		= qcom_pwrkey_get_function,
+	.direction_input	= qcom_pwrkey_direction_input,
+	.direction_output	= qcom_pwrkey_direction_output,
 };
 
 static int qcom_pwrkey_probe(struct udevice *dev)
-- 
2.30.2