drivers/acpi/dock.c

66  * @ds: Dock station.
71 static int add_dock_dependent_device(struct dock_station *ds,
82 	list_add_tail(&dd->list, &ds->dependent_devices);
118 	struct dock_station *ds;
120 	list_for_each_entry(ds, &dock_stations, sibling)
121 		if (ds->handle == handle)
122 			return ds;
129  * @ds: the dock station
136 find_dock_dependent_device(struct dock_station *ds, struct acpi_device *adev)
140 	list_for_each_entry(dd, &ds->dependent_devices, list)
150 	struct dock_station *ds = find_dock_station(dshandle);
152 	if (ds && !find_dock_dependent_device(ds, adev))
153 		add_dock_dependent_device(ds, adev);
188  * @ds: the dock station
193 static int dock_present(struct dock_station *ds)
198 	if (ds) {
199 		status = acpi_evaluate_integer(ds->handle, "_STA", NULL, &sta);
208  * @ds: Dock station.
210 static void hot_remove_dock_devices(struct dock_station *ds)
219 	list_for_each_entry_reverse(dd, &ds->dependent_devices, list)
223 	list_for_each_entry_reverse(dd, &ds->dependent_devices, list)
229  * @ds: the dock station
237 static void hotplug_dock_devices(struct dock_station *ds, u32 event)
242 	list_for_each_entry(dd, &ds->dependent_devices, list)
246 	list_for_each_entry(dd, &ds->dependent_devices, list)
255 	list_for_each_entry(dd, &ds->dependent_devices, list) {
267 static void dock_event(struct dock_station *ds, u32 event, int num)
269 	struct device *dev = &ds->dock_device->dev;
286 	list_for_each_entry(dd, &ds->dependent_devices, list)
295  * @ds: the dock station
300 static void handle_dock(struct dock_station *ds, int dock)
307 	acpi_handle_info(ds->handle, "%s\n", dock ? "docking" : "undocking");
314 	status = acpi_evaluate_integer(ds->handle, "_DCK", &arg_list, &value);
316 		acpi_handle_err(ds->handle, "Failed to execute _DCK (0x%x)\n",
320 static inline void dock(struct dock_station *ds)
322 	handle_dock(ds, 1);
325 static inline void undock(struct dock_station *ds)
327 	handle_dock(ds, 0);
330 static inline void begin_dock(struct dock_station *ds)
332 	ds->flags |= DOCK_DOCKING;
335 static inline void complete_dock(struct dock_station *ds)
337 	ds->flags &= ~(DOCK_DOCKING);
338 	ds->last_dock_time = jiffies;
341 static inline void begin_undock(struct dock_station *ds)
343 	ds->flags |= DOCK_UNDOCKING;
346 static inline void complete_undock(struct dock_station *ds)
348 	ds->flags &= ~(DOCK_UNDOCKING);
353  * @ds: the dock station
359 static int dock_in_progress(struct dock_station *ds)
361 	if ((ds->flags & DOCK_DOCKING) ||
362 	    time_before(jiffies, (ds->last_dock_time + HZ)))
369  * @ds: The dock station to undock.
375 static int handle_eject_request(struct dock_station *ds, u32 event)
377 	if (dock_in_progress(ds))
387 	dock_event(ds, event, UNDOCK_EVENT);
389 	hot_remove_dock_devices(ds);
390 	undock(ds);
391 	acpi_evaluate_lck(ds->handle, 0);
392 	acpi_evaluate_ej0(ds->handle);
393 	if (dock_present(ds)) {
394 		acpi_handle_err(ds->handle, "Unable to undock!\n");
397 	complete_undock(ds);
413 	struct dock_station *ds = find_dock_station(handle);
416 	if (!ds)
424 	if ((ds->flags & DOCK_IS_DOCK) && event == ACPI_NOTIFY_DEVICE_CHECK)
439 		if (!dock_in_progress(ds) && !acpi_device_enumerated(adev)) {
440 			begin_dock(ds);
441 			dock(ds);
442 			if (!dock_present(ds)) {
444 				complete_dock(ds);
447 			hotplug_dock_devices(ds, event);
448 			complete_dock(ds);
449 			dock_event(ds, event, DOCK_EVENT);
450 			acpi_evaluate_lck(ds->handle, 1);
454 		if (dock_present(ds) || dock_in_progress(ds))
462 		begin_undock(ds);
463 		if ((immediate_undock && !(ds->flags & DOCK_IS_ATA))
465 			handle_eject_request(ds, event);
467 			dock_event(ds, event, UNDOCK_EVENT);
577 	struct dock_station *dock_station, ds = { NULL, };
587 	pdevinfo.data = &ds;
588 	pdevinfo.size_data = sizeof(ds);