gpio: pca953x_gpio: Support label setting from DT

[u-boot] / drivers / gpio / pca953x_gpio.c

diff --git a/drivers/gpio/pca953x_gpio.c b/drivers/gpio/pca953x_gpio.c
index a8a5a89c05c616804ba0fd1a77be9bdf93c3dcac..08742f90c6744f606de620a0d75f8a1a065e6101 100644 (file)
--- a/drivers/gpio/pca953x_gpio.c
+++ b/drivers/gpio/pca953x_gpio.c
@@ -246,10 +246,12 @@ static int pca953x_probe(struct udevice *dev)
 {
        struct pca953x_info *info = dev_get_platdata(dev);
        struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
-       char name[32], *str;
+       char name[32], label[8], *str;
        int addr;
        ulong driver_data;
        int ret;
+       int size;
+       const u8 *tmp;
 
        addr = dev_read_addr(dev);
        if (addr == 0)
@@ -285,7 +287,16 @@ static int pca953x_probe(struct udevice *dev)
                return ret;
        }
 
-       snprintf(name, sizeof(name), "gpio@%x_", info->addr);
+       tmp = dev_read_prop(dev, "label", &size);
+
+       if (tmp) {
+               memcpy(label, tmp, sizeof(label) - 1);
+               label[sizeof(label) - 1] = '\0';
+               snprintf(name, sizeof(name), "%s@%x_", label, info->addr);
+       } else {
+               snprintf(name, sizeof(name), "gpio@%x_", info->addr);
+       }
+
        str = strdup(name);
        if (!str)
                return -ENOMEM;