pinctrl: unify pin type from signed to unsigned

[~andy/linux] / drivers / pinctrl / core.c

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index eadef9e191ea59d5f59b9453894a1d3d1824b4bf..678216652bc0cf4bbdf0661286109279ffc37a60 100644 (file)
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -88,7 +88,7 @@ struct pinctrl_dev *get_pinctrl_dev_from_dev(struct device *dev,
        return found ? pctldev : NULL;
 }
 
-struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, int pin)
+struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, unsigned int pin)
 {
        struct pin_desc *pindesc;
        unsigned long flags;
@@ -284,6 +284,37 @@ void pinctrl_remove_gpio_range(struct pinctrl_dev *pctldev,
        mutex_unlock(&pctldev->gpio_ranges_lock);
 }
 
+/**
+ * pinctrl_get_group_selector() - returns the group selector for a group
+ * @pctldev: the pin controller handling the group
+ * @pin_group: the pin group to look up
+ */
+int pinctrl_get_group_selector(struct pinctrl_dev *pctldev,
+                              const char *pin_group)
+{
+       const struct pinctrl_ops *pctlops = pctldev->desc->pctlops;
+       unsigned group_selector = 0;
+
+       while (pctlops->list_groups(pctldev, group_selector) >= 0) {
+               const char *gname = pctlops->get_group_name(pctldev,
+                                                           group_selector);
+               if (!strcmp(gname, pin_group)) {
+                       dev_dbg(&pctldev->dev,
+                               "found group selector %u for %s\n",
+                               group_selector,
+                               pin_group);
+                       return group_selector;
+               }
+
+               group_selector++;
+       }
+
+       dev_err(&pctldev->dev, "does not have pin group %s\n",
+               pin_group);
+
+       return -EINVAL;
+}
+
 #ifdef CONFIG_DEBUG_FS
 
 static int pinctrl_pins_show(struct seq_file *s, void *what)