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authorSascha Hauer <s.hauer@pengutronix.de>2021-06-16 10:54:37 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2021-06-16 10:54:37 +0200
commit226938796e525f42e002769f21dc66d16ac26f9b (patch)
treed7ef539c99a0da2885c65bdb0885f5570405eb27 /drivers/gpio
parent0e062b8296a22afff4157f56c5b6b64e7fac5aac (diff)
parente148f954c3eb025075f0cbf69eab1f3f62459b83 (diff)
downloadbarebox-226938796e525f42e002769f21dc66d16ac26f9b.tar.gz
Merge branch 'for-next/net'
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib.c30
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 7b7261d01f..387b410f12 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -555,27 +555,39 @@ static int of_gpiochip_scan_hogs(struct gpio_chip *chip)
return 0;
}
+static const char *gpio_suffixes[] = {
+ "gpios",
+ "gpio",
+};
+
/* Linux compatibility helper: Get a GPIO descriptor from device tree */
int gpiod_get(struct device_d *dev, const char *_con_id, enum gpiod_flags flags)
{
struct device_node *np = dev->device_node;
enum of_gpio_flags of_flags;
- const char *con_id = "gpios", *label = dev_name(dev);
- char *buf = NULL;
+ const char *label = dev_name(dev);
+ char *buf = NULL, *con_id;
int gpio;
- int ret;
+ int ret, i;
if (!IS_ENABLED(CONFIG_OFDEVICE) || !dev->device_node)
return -ENODEV;
- if (_con_id) {
- con_id = buf = basprintf("%s-gpios", _con_id);
- if (!buf)
+ for (i = 0; i < ARRAY_SIZE(gpio_suffixes); i++) {
+ if (_con_id)
+ con_id = basprintf("%s-%s", _con_id, gpio_suffixes[i]);
+ else
+ con_id = basprintf("%s", gpio_suffixes[i]);
+
+ if (!con_id)
return -ENOMEM;
- }
- gpio = of_get_named_gpio_flags(np, con_id, 0, &of_flags);
- free(buf);
+ gpio = of_get_named_gpio_flags(np, con_id, 0, &of_flags);
+ free(con_id);
+
+ if (gpio_is_valid(gpio))
+ break;
+ }
if (!gpio_is_valid(gpio))
return gpio < 0 ? gpio : -EINVAL;