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

Simon Glass
2015-02-17T22:29:42Z

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@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