[PATCH 16/18] mfd: adp5585: add support for a reset pin

[Nuno Sá via B4 Relay <devnull+nuno.sa.analog.com@xxxxxxxxxx>]

From: Nuno Sá <nuno.sa@xxxxxxxxxx>

Make sure to perform an Hardware reset during probe  if the pin is given
in FW.

Signed-off-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
---
 drivers/mfd/adp5585.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/mfd/adp5585.c b/drivers/mfd/adp5585.c
index 8f95a02661880477e5eddb4248e92ee1bc69d674..dd8c4221cacd5bbff3179c48015401279bbf3d33 100644
--- a/drivers/mfd/adp5585.c
+++ b/drivers/mfd/adp5585.c
@@ -11,6 +11,7 @@
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
+#include <linux/gpio/consumer.h>
 #include <linux/mfd/adp5585.h>
 #include <linux/mfd/core.h>
 #include <linux/minmax.h>
@@ -832,6 +833,7 @@ static int adp5585_i2c_probe(struct i2c_client *i2c)
 {
 	const struct adp5585_info *info;
 	struct adp5585_dev *adp5585;
+	struct gpio_desc *gpio;
 	unsigned int id;
 	int ret;
 
@@ -853,6 +855,16 @@ static int adp5585_i2c_probe(struct i2c_client *i2c)
 	if (ret)
 		return ret;
 
+	gpio = devm_gpiod_get_optional(&i2c->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio))
+		return PTR_ERR(gpio);
+
+	if (gpio) {
+		fsleep(30);
+		gpiod_set_value_cansleep(gpio, 0);
+		fsleep(60);
+	}
+
 	adp5585->regmap = devm_regmap_init_i2c(i2c, info->regmap_config);
 	if (IS_ERR(adp5585->regmap))
 		return dev_err_probe(&i2c->dev, PTR_ERR(adp5585->regmap),

-- 
2.48.1