pinctrl: add sleep mode management for hogs

This fix allows handling sleep mode for hogged
pins in pinctrl. It provides functions to set pins
to sleep/default configurations according to their
current state.

Signed-off-by: Julien Delacou <julien.delacou@stericsson.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h
index 12f5694f3d5d..232a9f6db4aa 100644
--- a/drivers/pinctrl/core.h
+++ b/drivers/pinctrl/core.h
@@ -30,6 +30,8 @@ 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 +43,8 @@ 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
@@ -164,5 +168,8 @@ 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;