Pin Control Subsystem's PINCTRL_DEV

/**  * struct Pinctrl_dev-pin control class device  * @node: node to include this PIN controller in the global Pin Controller list  * @desc: The PIN controller descriptor supplied when initializing this pin  * control Ler  * @pin_desc_tree: Each pin descriptor to this PIN controller are stored in  * this radix tree  * @gpio_ranges: A list of gpio ranges it handled by this PIN controller,  * ranges are added to this list at Runtime  * @dev: The device entry for this PIN controller  * @owner: module providing the PIN controller, used F or refcounting  * @driver_data: Driver data for drivers registering to the PIN controller  * subsystem &NBS p;* @p:result of Pinctrl_get () for this device  * @hog_default: Default state for Pins hogged by this device  * @hog_sleep: Pins hogged by this device  * @mutex: mutexes taken on each PIN controller specific action  * @device_root: DEbugfs root for this device  */struct Pinctrl_dev { struct list_head node;  struct Pinctrl_desc *desc Bsp;struct Radix_tree_root Pin_desc_tree;  struct List_head gpio_ranges;  struct device *dev;  struct module *owner;  void *driver_data;  struct Pinctrl *p;  struct pinctrl_state *hog_default;  struct pinctrl_state *hog_sleep;  struct mutex mutex; #ifdef CONFIG_DEBUG_FS  struct dentry *device_root; #endif};