linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

#include <linux/notifier.h>

​

/**

 * struct subsys_private - structure to hold the private to the driver core portions of the bus_type/class structure.

 *

 * @subsys - the struct kset that defines this subsystem

 * @devices_kset - the subsystem's 'devices' directory

 * @interfaces - list of subsystem interfaces associated

 * @mutex - protect the devices, and interfaces lists.

 *

 * @drivers_kset - the list of drivers associated

 * @klist_devices - the klist to iterate over the @devices_kset

 * @klist_drivers - the klist to iterate over the @drivers_kset

 * @bus_notifier - the bus notifier list for anything that cares about things

 *                 on this bus.

 * @bus - pointer back to the struct bus_type that this structure is associated

 *        with.

 *

 * @glue_dirs - "glue" directory to put in-between the parent device to

 *              avoid namespace conflicts

 * @class - pointer back to the struct class that this structure is associated

 *          with.

 *

 * This structure is the one that is the actual kobject allowing struct

 * bus_type/class to be statically allocated safely.  Nothing outside of the

 * driver core should ever touch these fields.

 */

struct subsys_private {

    struct kset subsys;

    struct kset *devices_kset;

    struct list_head interfaces;

    struct mutex mutex;

​

    struct kset *drivers_kset;

    struct klist klist_devices;

    struct klist klist_drivers;

    struct blocking_notifier_head bus_notifier;

    unsigned int drivers_autoprobe:1;

    struct bus_type *bus;

​

    struct kset glue_dirs;

    struct class *class;

};

#define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj)

​

struct driver_private {

    struct kobject kobj;

    struct klist klist_devices;

    struct klist_node knode_bus;

    struct module_kobject *mkobj;

    struct device_driver *driver;

};

#define to_driver(obj) container_of(obj, struct driver_private, kobj)

​

/**

 * struct device_private - structure to hold the private to the driver core portions of the device structure.

 *

 * @klist_children - klist containing all children of this device

 * @knode_parent - node in sibling list

 * @knode_driver - node in driver list

 * @knode_bus - node in bus list

 * @knode_class - node in class list