dm: pinctrl: Add pinctrl_get_pin_name and pinctrl_get_pins_count

Add pinctrl_get_pin_name() and pinctrl_get_pins_count() methods
to obtain pin's name and pin's muxing given a pin reference.

This will be used by the new pinmux command.
Signed-off-by: NPatrice Chotard <patrice.chotard@st.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

drivers/pinctrl/pinctrl-uclass.c

@@ -249,6 +249,29 @@ int pinctrl_get_gpio_mux(struct udevice *dev, int banknum, int index)
 	return ops->get_gpio_mux(dev, banknum, index);
 }
 
+int pinctrl_get_pins_count(struct udevice *dev)
+{
+	struct pinctrl_ops *ops = pinctrl_get_ops(dev);
+
+	if (!ops->get_pins_count)
+		return -ENOSYS;
+
+	return ops->get_pins_count(dev);
+}
+
+int pinctrl_get_pin_name(struct udevice *dev, int selector, char *buf,
+			 int size)
+{
+	struct pinctrl_ops *ops = pinctrl_get_ops(dev);
+
+	if (!ops->get_pin_name)
+		return -ENOSYS;
+
+	snprintf(buf, size, ops->get_pin_name(dev, selector));
+
+	return 0;
+}
+
 int pinctrl_get_pin_muxing(struct udevice *dev, int selector, char *buf,
 			   int size)
 {

include/dm/pinctrl.h

@@ -382,4 +382,26 @@ int pinctrl_get_gpio_mux(struct udevice *dev, int banknum, int index);
 int pinctrl_get_pin_muxing(struct udevice *dev, int selector, char *buf,
 			   int size);
 
+/**
+ * pinctrl_get_pins_count() - display pin-controller pins number
+ *
+ * This allows to know the number of pins owned by a given pin-controller
+ *
+ * @dev:	Pinctrl device to use
+ * @return pins number if OK, -ve on error
+ */
+int pinctrl_get_pins_count(struct udevice *dev);
+
+/**
+ * pinctrl_get_pin_name() - Returns the pin's name
+ *
+ * This allows to display the pin's name for debug purpose
+ *
+ * @dev:	Pinctrl device to use
+ * @selector	Pin index within pin-controller
+ * @buf		Pin's name
+ * @return 0 if OK, -ve on error
+ */
+int pinctrl_get_pin_name(struct udevice *dev, int selector, char *buf,
+			 int size);
 #endif /* __PINCTRL_H */