pinctrl: single: add get_pin_name operation
It returns the name of the requested pin.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index e99eb55..cdb5040 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -30,10 +30,12 @@
* struct single_priv - private data
* @bits_per_pin: number of bits per pin
* @npins: number of selectable pins
+ * @pin_name: temporary buffer to store the pin name
*/
struct single_priv {
unsigned int bits_per_pin;
unsigned int npins;
+ char pin_name[PINNAME_SIZE];
};
/**
@@ -204,6 +206,19 @@
return len;
}
+static const char *single_get_pin_name(struct udevice *dev,
+ unsigned int selector)
+{
+ struct single_priv *priv = dev_get_priv(dev);
+
+ if (selector >= priv->npins)
+ snprintf(priv->pin_name, PINNAME_SIZE, "Error");
+ else
+ snprintf(priv->pin_name, PINNAME_SIZE, "PIN%u", selector);
+
+ return priv->pin_name;
+}
+
static int single_get_pins_count(struct udevice *dev)
{
struct single_priv *priv = dev_get_priv(dev);
@@ -279,6 +294,7 @@
const struct pinctrl_ops single_pinctrl_ops = {
.get_pins_count = single_get_pins_count,
+ .get_pin_name = single_get_pin_name,
.set_state = single_set_state,
};