diff mbox series

[08/10] input: keyboard: adp5588-keys: add optional reset gpio

Message ID 20220708093448.42617-9-nuno.sa@analog.com (mailing list archive)
State Superseded
Headers show
Series adp5588-keys refactor and fw properties support | expand

Commit Message

Nuno Sa July 8, 2022, 9:34 a.m. UTC 
Optionally reset the device during probe.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
---
 drivers/input/keyboard/adp5588-keys.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Comments

Linus Walleij July 11, 2022, 12:52 p.m. UTC | #1 
On Fri, Jul 8, 2022 at 11:34 AM Nuno Sá <nuno.sa@analog.com> wrote:

> Optionally reset the device during probe.
>
> Signed-off-by: Nuno Sá <nuno.sa@analog.com>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij
diff mbox series

Patch

diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c
index 32c023dde7a6..57bc4e52ec21 100644
--- a/drivers/input/keyboard/adp5588-keys.c
+++ b/drivers/input/keyboard/adp5588-keys.c
@@ -10,6 +10,7 @@ 
 
 #include <linux/delay.h>
 #include <linux/errno.h>
+#include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
@@ -702,6 +703,7 @@  static int adp5588_probe(struct i2c_client *client,
 {
 	struct adp5588_kpad *kpad;
 	struct input_dev *input;
+	struct gpio_desc *gpio;
 	unsigned int revid;
 	int ret;
 	int error;
@@ -727,6 +729,16 @@  static int adp5588_probe(struct i2c_client *client,
 	if (error)
 		return error;
 
+	gpio = devm_gpiod_get_optional(&client->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);
+	}
+
 	ret = adp5588_read(client, DEV_ID);
 	if (ret < 0)
 		return ret;