include/linux/device/driver.h

Source file repositories/reference/linux-study-clean/include/linux/device/driver.h

File Facts

System
Linux kernel
Corpus path
include/linux/device/driver.h
Extension
.h
Size
10620 bytes
Lines
299
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

* struct device_driver - The basic device driver structure
 * @name:	Name of the device driver.
 * @bus:	The bus which the device of this driver belongs to.
 * @owner:	The module owner.
 * @mod_name:	Used for built-in modules.
 * @suppress_bind_attrs: Disables bind/unbind via sysfs.
 * @probe_type:	Type of the probe (synchronous or asynchronous) to use.
 * @of_match_table: The open firmware table.
 * @acpi_match_table: The ACPI match table.
 * @probe:	Called to query the existence of a specific device,
 *		whether this driver can work with it, and bind the driver
 *		to a specific device.
 * @sync_state:	Called to sync device state to software state after all the
 *		state tracking consumers linked to this device (present at
 *		the time of late_initcall) have successfully bound to a
 *		driver. If the device has no consumers, this function will
 *		be called at late_initcall_sync level. If the device has
 *		consumers that are never bound to a driver, this function
 *		will never get called until they do.
 * @remove:	Called when the device is removed from the system to
 *		unbind a device from this driver.
 * @shutdown:	Called at shut-down time to quiesce the device.
 * @suspend:	Called to put the device to sleep mode. Usually to a
 *		low power state.
 * @resume:	Called to bring a device from sleep mode.
 * @groups:	Default attributes that get created by the driver core
 *		automatically.
 * @dev_groups:	Additional attributes attached to device instance once
 *		it is bound to the driver.
 * @pm:		Power management operations of the device which matched
 *		this driver.
 * @coredump:	Called when sysfs entry is written to. The device driver
 *		is expected to call the dev_coredump API resulting in a
 *		uevent.
 * @p:		Driver core's private data, no one other than the driver
 *		core can touch this.
 * @p_cb:	Callbacks private to the driver core; no one other than the
 *		driver core is allowed to touch this.
 *
 * The device driver-model tracks all of the drivers known to the system.
 * The main reason for this tracking is to enable the driver core to match
 * up drivers with new devices. Once drivers are known objects within the
 * system, however, a number of other things become possible. Device drivers
 * can export information and configuration variables that are independent
 * of any specific device.
 */
struct device_driver {
	const char		*name;
	const struct bus_type	*bus;

	struct module		*owner;
	const char		*mod_name;	/* used for built-in modules */

	bool suppress_bind_attrs;	/* disables bind/unbind via sysfs */
	enum probe_type probe_type;

	const struct of_device_id	*of_match_table;
	const struct acpi_device_id	*acpi_match_table;

	int (*probe) (struct device *dev);
	void (*sync_state)(struct device *dev);
	int (*remove) (struct device *dev);
	void (*shutdown) (struct device *dev);
	int (*suspend) (struct device *dev, pm_message_t state);
	int (*resume) (struct device *dev);
	const struct attribute_group *const *groups;
	const struct attribute_group *const *dev_groups;

	const struct dev_pm_ops *pm;
	void (*coredump) (struct device *dev);

	struct driver_private *p;
	struct {
		/*
		 * Called after remove() but before devres entries are released.
		 * This is a Rust only callback.
		 */
		void (*post_unbind_rust)(struct device *dev);
	} p_cb;
};


int __must_check driver_register(struct device_driver *drv);
void driver_unregister(struct device_driver *drv);

struct device_driver *driver_find(const char *name, const struct bus_type *bus);
bool __init driver_probe_done(void);
void wait_for_device_probe(void);
void __init wait_for_init_devices_probe(void);

Annotation

Implementation Notes