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Diffstat (limited to 'Documentation/driver-model/device.txt')
| -rw-r--r-- | Documentation/driver-model/device.txt | 91 |
1 files changed, 1 insertions, 90 deletions
diff --git a/Documentation/driver-model/device.txt b/Documentation/driver-model/device.txt index a124f31..b2ff426 100644 --- a/Documentation/driver-model/device.txt +++ b/Documentation/driver-model/device.txt @@ -2,96 +2,7 @@ The Basic Device Structure ~~~~~~~~~~~~~~~~~~~~~~~~~~ -struct device { - struct list_head g_list; - struct list_head node; - struct list_head bus_list; - struct list_head driver_list; - struct list_head intf_list; - struct list_head children; - struct device * parent; - - char name[DEVICE_NAME_SIZE]; - char bus_id[BUS_ID_SIZE]; - - spinlock_t lock; - atomic_t refcount; - - struct bus_type * bus; - struct driver_dir_entry dir; - - u32 class_num; - - struct device_driver *driver; - void *driver_data; - void *platform_data; - - u32 current_state; - unsigned char *saved_state; - - void (*release)(struct device * dev); -}; - -Fields -~~~~~~ -g_list: Node in the global device list. - -node: Node in device's parent's children list. - -bus_list: Node in device's bus's devices list. - -driver_list: Node in device's driver's devices list. - -intf_list: List of intf_data. There is one structure allocated for - each interface that the device supports. - -children: List of child devices. - -parent: *** FIXME *** - -name: ASCII description of device. - Example: " 3Com Corporation 3c905 100BaseTX [Boomerang]" - -bus_id: ASCII representation of device's bus position. This - field should be a name unique across all devices on the - bus type the device belongs to. - - Example: PCI bus_ids are in the form of - <bus number>:<slot number>.<function number> - This name is unique across all PCI devices in the system. - -lock: Spinlock for the device. - -refcount: Reference count on the device. - -bus: Pointer to struct bus_type that device belongs to. - -dir: Device's sysfs directory. - -class_num: Class-enumerated value of the device. - -driver: Pointer to struct device_driver that controls the device. - -driver_data: Driver-specific data. - -platform_data: Platform data specific to the device. - - Example: for devices on custom boards, as typical of embedded - and SOC based hardware, Linux often uses platform_data to point - to board-specific structures describing devices and how they - are wired. That can include what ports are available, chip - variants, which GPIO pins act in what additional roles, and so - on. This shrinks the "Board Support Packages" (BSPs) and - minimizes board-specific #ifdefs in drivers. - -current_state: Current power state of the device. - -saved_state: Pointer to saved state of the device. This is usable by - the device driver controlling the device. - -release: Callback to free the device after all references have - gone away. This should be set by the allocator of the - device (i.e. the bus driver that discovered the device). +See the kerneldoc for the struct device. Programming Interface |