---

yaml
---
r: 302328
b: refs/heads/master
c: 57291ce
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d26bc49fa401be2b71838b6a4b387196cd12a534
+refs/heads/master: 57291ce295c0aca738dd284c4a9c591c09ebee71

trunk/drivers/pinctrl/Makefile

@@ -5,6 +5,7 @@ ccflags-$(CONFIG_DEBUG_PINCTRL)	+= -DDEBUG
 obj-$(CONFIG_PINCTRL)		+= core.o
 obj-$(CONFIG_PINMUX)		+= pinmux.o
 obj-$(CONFIG_PINCONF)		+= pinconf.o
+obj-$(CONFIG_OF)		+= devicetree.o
 obj-$(CONFIG_GENERIC_PINCONF)	+= pinconf-generic.o
 obj-$(CONFIG_PINCTRL_PXA3xx)	+= pinctrl-pxa3xx.o
 obj-$(CONFIG_PINCTRL_MMP2)	+= pinctrl-mmp2.o

trunk/drivers/pinctrl/core.c

@@ -26,6 +26,7 @@
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/pinctrl/machine.h>
 #include "core.h"
+#include "devicetree.h"
 #include "pinmux.h"
 #include "pinconf.h"
 
@@ -45,7 +46,7 @@ struct pinctrl_maps {
 DEFINE_MUTEX(pinctrl_mutex);
 
 /* Global list of pin control devices (struct pinctrl_dev) */
-static LIST_HEAD(pinctrldev_list);
+LIST_HEAD(pinctrldev_list);
 
 /* List of pin controller handles (struct pinctrl) */
 static LIST_HEAD(pinctrl_list);
@@ -579,6 +580,13 @@ static struct pinctrl *create_pinctrl(struct device *dev)
 	}
 	p->dev = dev;
 	INIT_LIST_HEAD(&p->states);
+	INIT_LIST_HEAD(&p->dt_maps);
+
+	ret = pinctrl_dt_to_map(p);
+	if (ret < 0) {
+		kfree(p);
+		return ERR_PTR(ret);
+	}
 
 	devname = dev_name(dev);
 
@@ -662,6 +670,8 @@ static void pinctrl_put_locked(struct pinctrl *p, bool inlist)
 		kfree(state);
 	}
 
+	pinctrl_dt_free_maps(p);
+
 	if (inlist)
 		list_del(&p->node);
 	kfree(p);
@@ -787,15 +797,8 @@ int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *state)
 }
 EXPORT_SYMBOL_GPL(pinctrl_select_state);
 
-/**
- * pinctrl_register_mappings() - register a set of pin controller mappings
- * @maps: the pincontrol mappings table to register. This should probably be
- *	marked with __initdata so it can be discarded after boot. This
- *	function will perform a shallow copy for the mapping entries.
- * @num_maps: the number of maps in the mapping table
- */
-int pinctrl_register_mappings(struct pinctrl_map const *maps,
-			      unsigned num_maps)
+int pinctrl_register_map(struct pinctrl_map const *maps, unsigned num_maps,
+			 bool dup, bool locked)
 {
 	int i, ret;
 	struct pinctrl_maps *maps_node;
@@ -851,20 +854,52 @@ int pinctrl_register_mappings(struct pinctrl_map const *maps,
 	}
 
 	maps_node->num_maps = num_maps;
-	maps_node->maps = kmemdup(maps, sizeof(*maps) * num_maps, GFP_KERNEL);
-	if (!maps_node->maps) {
-		pr_err("failed to duplicate mapping table\n");
-		kfree(maps_node);
-		return -ENOMEM;
+	if (dup) {
+		maps_node->maps = kmemdup(maps, sizeof(*maps) * num_maps,
+					  GFP_KERNEL);
+		if (!maps_node->maps) {
+			pr_err("failed to duplicate mapping table\n");
+			kfree(maps_node);
+			return -ENOMEM;
+		}
+	} else {
+		maps_node->maps = maps;
 	}
 
-	mutex_lock(&pinctrl_mutex);
+	if (!locked)
+		mutex_lock(&pinctrl_mutex);
 	list_add_tail(&maps_node->node, &pinctrl_maps);
-	mutex_unlock(&pinctrl_mutex);
+	if (!locked)
+		mutex_unlock(&pinctrl_mutex);
 
 	return 0;
 }
 
+/**
+ * pinctrl_register_mappings() - register a set of pin controller mappings
+ * @maps: the pincontrol mappings table to register. This should probably be
+ *	marked with __initdata so it can be discarded after boot. This
+ *	function will perform a shallow copy for the mapping entries.
+ * @num_maps: the number of maps in the mapping table
+ */
+int pinctrl_register_mappings(struct pinctrl_map const *maps,
+			      unsigned num_maps)
+{
+	return pinctrl_register_map(maps, num_maps, true, false);
+}
+
+void pinctrl_unregister_map(struct pinctrl_map const *map)
+{
+	struct pinctrl_maps *maps_node;
+
+	list_for_each_entry(maps_node, &pinctrl_maps, node) {
+		if (maps_node->maps == map) {
+			list_del(&maps_node->node);
+			return;
+		}
+	}
+}
+
 #ifdef CONFIG_DEBUG_FS
 
 static int pinctrl_pins_show(struct seq_file *s, void *what)
@@ -1231,6 +1266,9 @@ static int pinctrl_check_ops(struct pinctrl_dev *pctldev)
 	    !ops->get_group_pins)
 		return -EINVAL;
 
+	if (ops->dt_node_to_map && !ops->dt_free_map)
+		return -EINVAL;
+
 	return 0;
 }
 

trunk/drivers/pinctrl/core.h

@@ -52,12 +52,15 @@ struct pinctrl_dev {
  * @dev: the device using this pin control handle
  * @states: a list of states for this device
  * @state: the current state
+ * @dt_maps: the mapping table chunks dynamically parsed from device tree for
+ *	this device, if any
  */
 struct pinctrl {
 	struct list_head node;
 	struct device *dev;
 	struct list_head states;
 	struct pinctrl_state *state;
+	struct list_head dt_maps;
 };
 
 /**
@@ -100,7 +103,8 @@ struct pinctrl_setting_configs {
  * struct pinctrl_setting - an individual mux or config setting
  * @node: list node for struct pinctrl_settings's @settings field
  * @type: the type of setting
- * @pctldev: pin control device handling to be programmed
+ * @pctldev: pin control device handling to be programmed. Not used for
+ *   PIN_MAP_TYPE_DUMMY_STATE.
  * @data: Data specific to the setting type
  */
 struct pinctrl_setting {
@@ -153,4 +157,9 @@ static inline struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev,
 	return radix_tree_lookup(&pctldev->pin_desc_tree, pin);
 }
 
+int pinctrl_register_map(struct pinctrl_map const *maps, unsigned num_maps,
+			 bool dup, bool locked);
+void pinctrl_unregister_map(struct pinctrl_map const *map);
+
 extern struct mutex pinctrl_mutex;
+extern struct list_head pinctrldev_list;