1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h
index 12f5694f3d5d..ee72f1f6d862 100644
--- a/drivers/pinctrl/core.h
+++ b/drivers/pinctrl/core.h
@@ -9,6 +9,7 @@
  * License terms: GNU General Public License (GPL) version 2
  */
 
+#include <linux/kref.h>
 #include <linux/mutex.h>
 #include <linux/radix-tree.h>
 #include <linux/pinctrl/pinconf.h>
@@ -30,6 +31,8 @@ struct pinctrl_gpio_range;
  * @driver_data: driver data for drivers registering to the pin controller
  *      subsystem
  * @p: result of pinctrl_get() for this device
+ * @hog_default: default state for pins hogged by this device
+ * @hog_sleep: sleep state for pins hogged by this device
  * @device_root: debugfs root for this device
  */
 struct pinctrl_dev {
@@ -41,6 +44,8 @@ struct pinctrl_dev {
         struct module *owner;
         void *driver_data;
         struct pinctrl *p;
+        struct pinctrl_state *hog_default;
+        struct pinctrl_state *hog_sleep;
 #ifdef CONFIG_DEBUG_FS
         struct dentry *device_root;
 #endif
@@ -54,6 +59,7 @@ struct pinctrl_dev {
  * @state: the current state
  * @dt_maps: the mapping table chunks dynamically parsed from device tree for
  *      this device, if any
+ * @users: reference count
  */
 struct pinctrl {
         struct list_head node;
@@ -61,6 +67,7 @@ struct pinctrl {
         struct list_head states;
         struct pinctrl_state *state;
         struct list_head dt_maps;
+        struct kref users;
 };
 
 /**
@@ -148,6 +155,18 @@ struct pin_desc {
 #endif
 };
 
+/**
+ * struct pinctrl_maps - a list item containing part of the mapping table
+ * @node: mapping table list node
+ * @maps: array of mapping table entries
+ * @num_maps: the number of entries in @maps
+ */
+struct pinctrl_maps {
+        struct list_head node;
+        struct pinctrl_map const *maps;
+        unsigned num_maps;
+};
+
 struct pinctrl_dev *get_pinctrl_dev_from_devname(const char *dev_name);
 int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name);
 const char *pin_get_name(struct pinctrl_dev *pctldev, const unsigned pin);
@@ -164,5 +183,15 @@ 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 int pinctrl_force_sleep(struct pinctrl_dev *pctldev);
+extern int pinctrl_force_default(struct pinctrl_dev *pctldev);
+
 extern struct mutex pinctrl_mutex;
 extern struct list_head pinctrldev_list;
+extern struct list_head pinctrl_maps;
+
+#define for_each_maps(_maps_node_, _i_, _map_) \
+        list_for_each_entry(_maps_node_, &pinctrl_maps, node) \
+                for (_i_ = 0, _map_ = &_maps_node_->maps[_i_]; \
+                        _i_ < _maps_node_->num_maps; \
+                        _i_++, _map_ = &_maps_node_->maps[_i_])