dm: gpio: Add dm_gpio_lookup_name() to look up a GPIO name
Provide a driver-model function to look up a GPIO name. Make the standard
function use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index bf982b9..c6fd580 100644
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -48,8 +48,7 @@
return ret ? ret : -ENOENT;
}
-int gpio_lookup_name(const char *name, struct udevice **devp,
- unsigned int *offsetp, unsigned int *gpiop)
+int dm_gpio_lookup_name(const char *name, struct gpio_desc *desc)
{
struct gpio_dev_priv *uc_priv = NULL;
struct udevice *dev;
@@ -57,8 +56,6 @@
int numeric;
int ret;
- if (devp)
- *devp = NULL;
numeric = isdigit(*name) ? simple_strtoul(name, NULL, 10) : -1;
for (ret = uclass_first_device(UCLASS_GPIO, &dev);
dev;
@@ -84,12 +81,33 @@
if (!dev)
return ret ? ret : -EINVAL;
+ desc->dev = dev;
+ desc->offset = offset;
+
+ return 0;
+}
+
+int gpio_lookup_name(const char *name, struct udevice **devp,
+ unsigned int *offsetp, unsigned int *gpiop)
+{
+ struct gpio_desc desc;
+ int ret;
+
+ if (devp)
+ *devp = NULL;
+ ret = dm_gpio_lookup_name(name, &desc);
+ if (ret)
+ return ret;
+
if (devp)
- *devp = dev;
+ *devp = desc.dev;
if (offsetp)
- *offsetp = offset;
- if (gpiop)
- *gpiop = uc_priv->gpio_base + offset;
+ *offsetp = desc.offset;
+ if (gpiop) {
+ struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(desc.dev);
+
+ *gpiop = uc_priv->gpio_base + desc.offset;
+ }
return 0;
}