[U-Boot] [PATCH 08/20] dm: gpio: Add an implementation for gpio_get_number()

[Simon Glass]

This has a prototype but no implementation. It returns the global GPIO number
given a gpio_desc. It is useful for debugging in some cases.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 drivers/gpio/gpio-uclass.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index 6e05c54..f316fc1 100644
--- a/drivers/gpio/gpio-uclass.c
+++ b/drivers/gpio/gpio-uclass.c
@@ -721,6 +721,18 @@ static int gpio_renumber(struct udevice *removed_dev)
 	return 0;
 }
 
+int gpio_get_number(struct gpio_desc *desc)
+{
+	struct udevice *dev = desc->dev;
+	struct gpio_dev_priv *uc_priv;
+
+	if (!dev)
+		return -1;
+	uc_priv = dev->uclass_priv;
+
+	return uc_priv->gpio_base + desc->offset;
+}
+
 static int gpio_post_probe(struct udevice *dev)
 {
 	struct gpio_dev_priv *uc_priv = dev->uclass_priv;
-- 
2.2.0.rc0.207.ga3a616c