2 files changed, 102 insertions, 2 deletions

diff --git a/include/linux/pinctrl/pinconf.h b/include/linux/pinctrl/pinconf.h
new file mode 100644
index 000000000000..d5b72e6e261d
--- /dev/null
+++ b/include/linux/pinctrl/pinconf.h
@@ -0,0 +1,96 @@
+/*
+ * Interface the pinconfig portions of the pinctrl subsystem
+ *
+ * Copyright (C) 2011 ST-Ericsson SA
+ * Written on behalf of Linaro for ST-Ericsson
+ * This interface is used in the core to keep track of pins.
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+#ifndef __LINUX_PINCTRL_PINCONF_H
+#define __LINUX_PINCTRL_PINCONF_H
+
+#ifdef CONFIG_PINCONF
+
+struct pinctrl_dev;
+
+/**
+ * struct pinconf_ops - pin config operations, to be implemented by
+ * pin configuration capable drivers.
+ * @pin_config_get: get the config of a certain pin, if the requested config
+ *      is not available on this controller this should return -ENOTSUPP
+ *      and if it is available but disabled it should return -EINVAL
+ * @pin_config_get: get the config of a certain pin
+ * @pin_config_set: configure an individual pin
+ * @pin_config_group_get: get configurations for an entire pin group
+ * @pin_config_group_set: configure all pins in a group
+ * @pin_config_dbg_show: optional debugfs display hook that will provide
+ *      per-device info for a certain pin in debugfs
+ * @pin_config_group_dbg_show: optional debugfs display hook that will provide
+ *      per-device info for a certain group in debugfs
+ */
+struct pinconf_ops {
+        int (*pin_config_get) (struct pinctrl_dev *pctldev,
+                               unsigned pin,
+                               unsigned long *config);
+        int (*pin_config_set) (struct pinctrl_dev *pctldev,
+                               unsigned pin,
+                               unsigned long config);
+        int (*pin_config_group_get) (struct pinctrl_dev *pctldev,
+                                     unsigned selector,
+                                     unsigned long *config);
+        int (*pin_config_group_set) (struct pinctrl_dev *pctldev,
+                                     unsigned selector,
+                                     unsigned long config);
+        void (*pin_config_dbg_show) (struct pinctrl_dev *pctldev,
+                                     struct seq_file *s,
+                                     unsigned offset);
+        void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev,
+                                           struct seq_file *s,
+                                           unsigned selector);
+};
+
+extern int pin_config_get(struct pinctrl_dev *pctldev, const char *name,
+                          unsigned long *config);
+extern int pin_config_set(struct pinctrl_dev *pctldev, const char *name,
+                          unsigned long config);
+extern int pin_config_group_get(struct pinctrl_dev *pctldev,
+                                const char *pin_group,
+                                unsigned long *config);
+extern int pin_config_group_set(struct pinctrl_dev *pctldev,
+                                const char *pin_group,
+                                unsigned long config);
+
+#else
+
+static inline int pin_config_get(struct pinctrl_dev *pctldev, const char *name,
+                                 unsigned long *config)
+{
+        return 0;
+}
+
+static inline int pin_config_set(struct pinctrl_dev *pctldev, const char *name,
+                                 unsigned long config)
+{
+        return 0;
+}
+
+static inline int pin_config_group_get(struct pinctrl_dev *pctldev,
+                                       const char *pin_group,
+                                       unsigned long *config)
+{
+        return 0;
+}
+
+static inline int pin_config_group_set(struct pinctrl_dev *pctldev,
+                                       const char *pin_group,
+                                       unsigned long config)
+{
+        return 0;
+}
+
+#endif
+
+#endif /* __LINUX_PINCTRL_PINCONF_H */
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index f17fac4b51f1..9809a94f151b 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -21,6 +21,7 @@
 
 struct pinctrl_dev;
 struct pinmux_ops;
+struct pinconf_ops;
 struct gpio_chip;
 
 /**
@@ -97,7 +98,9 @@ struct pinctrl_ops {
  *      but may be equal to npins if you have no holes in the pin range.
  * @pctlops: pin control operation vtable, to support global concepts like
  *      grouping of pins, this is optional.
- * @pmxops: pinmux operation vtable, if you support pinmuxing in your driver
+ * @pmxops: pinmux operations vtable, if you support pinmuxing in your driver
+ * @confops: pin config operations vtable, if you support pin configuration in
+ *      your driver
  * @owner: module providing the pin controller, used for refcounting
  */
 struct pinctrl_desc {
@@ -107,6 +110,7 @@ struct pinctrl_desc {
         unsigned int maxpin;
         struct pinctrl_ops *pctlops;
         struct pinmux_ops *pmxops;
+        struct pinconf_ops *confops;
         struct module *owner;
 };
 
@@ -125,7 +129,7 @@ extern void *pinctrl_dev_get_drvdata(struct pinctrl_dev *pctldev);
 
 struct pinctrl_dev;
 
-/* Sufficiently stupid default function when pinctrl is not in use */
+/* Sufficiently stupid default functions when pinctrl is not in use */
 static inline bool pin_is_valid(struct pinctrl_dev *pctldev, int pin)
 {
         return pin >= 0;