diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2019-11-22 09:45:24 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-11-27 12:07:20 +0100 |
| commit | 9edaf7570b2b8b98291181db15885ccbe0eb5202 (patch) | |
| tree | 189421a60f1b4af5b114e5197415311550ab3fa8 /drivers | |
| parent | 17a517c0fcf21cbd1882108c18fa845930927563 (diff) | |
| download | barebox-9edaf7570b2b8b98291181db15885ccbe0eb5202.tar.gz barebox-9edaf7570b2b8b98291181db15885ccbe0eb5202.tar.xz | |
of/gpio: Support gpio-line-names property
GPIOs can be given names with the gpio-line-names device tree property.
This patch adds support for it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 057cea43cc..9764ddf0f0 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -428,11 +428,25 @@ static int of_hog_gpio(struct device_node *np, struct gpio_chip *chip, static int of_gpiochip_scan_hogs(struct gpio_chip *chip) { struct device_node *np; - int ret, i; + int ret, i, count; if (!IS_ENABLED(CONFIG_OFDEVICE) || !chip->dev->device_node) return 0; + count = of_property_count_strings(chip->dev->device_node, "gpio-line-names"); + + if (count > 0) { + const char **arr = xzalloc(count * sizeof(char *)); + + of_property_read_string_array(chip->dev->device_node, + "gpio-line-names", arr, count); + + for (i = 0; i < chip->ngpio && i < count; i++) + gpio_desc[chip->base + i].name = xstrdup(arr[i]); + + free(arr); + } + for_each_available_child_of_node(chip->dev->device_node, np) { if (!of_property_read_bool(np, "gpio-hog")) continue; |