dm: gpio: Add a driver GPIO translation method

[karo-tx-uboot.git] / drivers / gpio / gpio-uclass.c

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 2f3c36b48ff652d4f81a169a67f97c6a45acfab5..0a4d9e421781cd1b7eedf7707cc347e2cf36f23c 100644 (file)
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
+#include <fdtdec.h>
 #include <malloc.h>
 #include <asm/gpio.h>
 #include <linux/ctype.h>
@@ -91,6 +92,21 @@ int gpio_lookup_name(const char *name, struct udevice **devp,
        return 0;
 }
 
+int gpio_find_and_xlate(struct gpio_desc *desc,
+                       struct fdtdec_phandle_args *args)
+{
+       struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
+
+       /* Use the first argument as the offset by default */
+       if (args->args_count > 0)
+               desc->offset = args->args[0];
+       else
+               desc->offset = -1;
+       desc->flags = 0;
+
+       return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0;
+}
+
 static int dm_gpio_request(struct gpio_desc *desc, const char *label)
 {
        struct udevice *dev = desc->dev;