Merge tag 'pinctrl-mergebase-20120418' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl into next/pinctrl

By Stephen Warren (12) and others
via Linus Walleij
* tag 'pinctrl-mergebase-20120418' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (24 commits)
  pinctrl: show pin name for pingroups in sysfs
  pinctrl: show pin name when request pins
  pinctrl: implement devm_pinctrl_get()/put()
  pinctrl: a minor fix of pin config debug information
  pinctrl: pinconf: fix compilation error if PINCONF is not selected
  pinctrl: allow pctldevs to decode pin config in debugfs
  pinctrl: ifdef CONFIG_DEBUG_FS cleanup
  pinctrl: mark non-EXPERIMENTAL
  pinctrl: tegra: Add complete device tree support
  dt: Document Tegra20/30 pinctrl binding
  dt: Move Tegra20 pin mux binding into new pinctrl directory
  dt: pinctrl: Document device tree binding
  dt: add property iteration helpers
  pinctrl: implement pinctrl deferred probing
  pinctrl: add some error checking for user interfaces
  pinctrl: fix pinmux_check_ops error checking
  pinctrl: replace list_*() with get_*_count()
  pinctrl: mark const init data with __initconst instead of __initdata
  Documentation: pinctrl: add missing spi0_0 grp in example
  pinctrl: fix build when CONFIG_OF && !CONFIG_PINCTRL
  ...

Resolved conflicts in drivers/pinctrl/core.c due to same patch being
applied in two branches.

Signed-off-by: Olof Johansson <olof@lixom.net>

5 files changed, 96 insertions, 8 deletions

diff --git a/include/linux/of.h b/include/linux/of.h
index fa7fb1d97458..e3f942d9da89 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -259,6 +259,37 @@ extern void of_detach_node(struct device_node *);
 #endif
 
 #define of_match_ptr(_ptr)	(_ptr)
+
+/*
+ * struct property *prop;
+ * const __be32 *p;
+ * u32 u;
+ *
+ * of_property_for_each_u32(np, "propname", prop, p, u)
+ *         printk("U32 value: %x\n", u);
+ */
+const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
+			       u32 *pu);
+#define of_property_for_each_u32(np, propname, prop, p, u)	\
+	for (prop = of_find_property(np, propname, NULL),	\
+		p = of_prop_next_u32(prop, NULL, &u);		\
+		p;						\
+		p = of_prop_next_u32(prop, p, &u))
+
+/*
+ * struct property *prop;
+ * const char *s;
+ *
+ * of_property_for_each_string(np, "propname", prop, s)
+ *         printk("String value: %s\n", s);
+ */
+const char *of_prop_next_string(struct property *prop, const char *cur);
+#define of_property_for_each_string(np, propname, prop, s)	\
+	for (prop = of_find_property(np, propname, NULL),	\
+		s = of_prop_next_string(prop, NULL);		\
+		s;						\
+		s = of_prop_next_string(prop, s))
+
 #else /* CONFIG_OF */
 
 static inline bool of_have_populated_dt(void)
@@ -349,6 +380,10 @@ static inline int of_machine_is_compatible(const char *compat)
 
 #define of_match_ptr(_ptr)	NULL
 #define of_match_node(_matches, _node)	NULL
+#define of_property_for_each_u32(np, propname, prop, p, u) \
+	while (0)
+#define of_property_for_each_string(np, propname, prop, s) \
+	while (0)
 #endif /* CONFIG_OF */
 
 /**
diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h
index 191e72688481..6dd96fb45482 100644
--- a/include/linux/pinctrl/consumer.h
+++ b/include/linux/pinctrl/consumer.h
@@ -36,6 +36,9 @@ extern struct pinctrl_state * __must_check pinctrl_lookup_state(
 							const char *name);
 extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s);
 
+extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev);
+extern void devm_pinctrl_put(struct pinctrl *p);
+
 #else /* !CONFIG_PINCTRL */
 
 static inline int pinctrl_request_gpio(unsigned gpio)
@@ -79,6 +82,15 @@ static inline int pinctrl_select_state(struct pinctrl *p,
 	return 0;
 }
 
+static inline struct pinctrl * __must_check devm_pinctrl_get(struct device *dev)
+{
+	return NULL;
+}
+
+static inline void devm_pinctrl_put(struct pinctrl *p)
+{
+}
+
 #endif /* CONFIG_PINCTRL */
 
 static inline struct pinctrl * __must_check pinctrl_get_select(
@@ -113,6 +125,38 @@ static inline struct pinctrl * __must_check pinctrl_get_select_default(
 	return pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
 }
 
+static inline struct pinctrl * __must_check devm_pinctrl_get_select(
+					struct device *dev, const char *name)
+{
+	struct pinctrl *p;
+	struct pinctrl_state *s;
+	int ret;
+
+	p = devm_pinctrl_get(dev);
+	if (IS_ERR(p))
+		return p;
+
+	s = pinctrl_lookup_state(p, name);
+	if (IS_ERR(s)) {
+		devm_pinctrl_put(p);
+		return ERR_PTR(PTR_ERR(s));
+	}
+
+	ret = pinctrl_select_state(p, s);
+	if (ret < 0) {
+		devm_pinctrl_put(p);
+		return ERR_PTR(ret);
+	}
+
+	return p;
+}
+
+static inline struct pinctrl * __must_check devm_pinctrl_get_select_default(
+					struct device *dev)
+{
+	return devm_pinctrl_get_select(dev, PINCTRL_STATE_DEFAULT);
+}
+
 #ifdef CONFIG_PINCONF
 
 extern int pin_config_get(const char *dev_name, const char *name,
diff --git a/include/linux/pinctrl/pinconf.h b/include/linux/pinctrl/pinconf.h
index ec431f03362d..7b9d5f00ed37 100644
--- a/include/linux/pinctrl/pinconf.h
+++ b/include/linux/pinctrl/pinconf.h
@@ -33,6 +33,8 @@ struct seq_file;
  *	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
+ * @pin_config_config_dbg_show: optional debugfs display hook that will decode
+ *	and display a driver's pin configuration parameter
  */
 struct pinconf_ops {
 #ifdef CONFIG_GENERIC_PINCONF
@@ -56,6 +58,9 @@ struct pinconf_ops {
 	void (*pin_config_group_dbg_show) (struct pinctrl_dev *pctldev,
 					   struct seq_file *s,
 					   unsigned selector);
+	void (*pin_config_config_dbg_show) (struct pinctrl_dev *pctldev,
+					    struct seq_file *s,
+					    unsigned long config);
 };
 
 #endif
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index 4e9f0788c221..c22d0409d2ef 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -21,9 +21,11 @@
 
 struct device;
 struct pinctrl_dev;
+struct pinctrl_map;
 struct pinmux_ops;
 struct pinconf_ops;
 struct gpio_chip;
+struct device_node;
 
 /**
  * struct pinctrl_pin_desc - boards/machines provide information on their
@@ -64,9 +66,7 @@ struct pinctrl_gpio_range {
 /**
  * struct pinctrl_ops - global pin control operations, to be implemented by
  * pin controller drivers.
- * @list_groups: list the number of selectable named groups available
- *	in this pinmux driver, the core will begin on 0 and call this
- *	repeatedly as long as it returns >= 0 to enumerate the groups
+ * @get_groups_count: Returns the count of total number of groups registered.
  * @get_group_name: return the group name of the pin group
  * @get_group_pins: return an array of pins corresponding to a certain
  *	group selector @pins, and the size of the array in @num_pins
@@ -74,7 +74,7 @@ struct pinctrl_gpio_range {
  *	info for a certain pin in debugfs
  */
 struct pinctrl_ops {
-	int (*list_groups) (struct pinctrl_dev *pctldev, unsigned selector);
+	int (*get_groups_count) (struct pinctrl_dev *pctldev);
 	const char *(*get_group_name) (struct pinctrl_dev *pctldev,
 				       unsigned selector);
 	int (*get_group_pins) (struct pinctrl_dev *pctldev,
@@ -83,6 +83,11 @@ struct pinctrl_ops {
 			       unsigned *num_pins);
 	void (*pin_dbg_show) (struct pinctrl_dev *pctldev, struct seq_file *s,
 			  unsigned offset);
+	int (*dt_node_to_map) (struct pinctrl_dev *pctldev,
+			       struct device_node *np_config,
+			       struct pinctrl_map **map, unsigned *num_maps);
+	void (*dt_free_map) (struct pinctrl_dev *pctldev,
+			     struct pinctrl_map *map, unsigned num_maps);
 };
 
 /**
diff --git a/include/linux/pinctrl/pinmux.h b/include/linux/pinctrl/pinmux.h
index 47e9237edd47..dd7bef61d066 100644
--- a/include/linux/pinctrl/pinmux.h
+++ b/include/linux/pinctrl/pinmux.h
@@ -29,9 +29,8 @@ struct pinctrl_dev;
  *	is allowed to answer "no" by returning a negative error code
  * @free: the reverse function of the request() callback, frees a pin after
  *	being requested
- * @list_functions: list the number of selectable named functions available
- *	in this pinmux driver, the core will begin on 0 and call this
- *	repeatedly as long as it returns >= 0 to enumerate mux settings
+ * @get_functions_count: returns number of selectable named functions available
+ *	in this pinmux driver
  * @get_function_name: return the function name of the muxing selector,
  *	called by the core to figure out which mux setting it shall map a
  *	certain device to
@@ -62,7 +61,7 @@ struct pinctrl_dev;
 struct pinmux_ops {
 	int (*request) (struct pinctrl_dev *pctldev, unsigned offset);
 	int (*free) (struct pinctrl_dev *pctldev, unsigned offset);
-	int (*list_functions) (struct pinctrl_dev *pctldev, unsigned selector);
+	int (*get_functions_count) (struct pinctrl_dev *pctldev);
 	const char *(*get_function_name) (struct pinctrl_dev *pctldev,
 					  unsigned selector);
 	int (*get_function_groups) (struct pinctrl_dev *pctldev,