3  *  sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $)
28 #define ACPI_SBS_CLASS			"sbs"
57 	struct acpi_sbs *sbs;  member
134 	struct acpi_sbs *sbs = to_acpi_sbs(psy);  in sbs_get_ac_property()  local
137 		val->intval = sbs->charger_present;  in sbs_get_ac_property()
285 	.name		= "sbs-charger",
326 static int acpi_manager_get_info(struct acpi_sbs *sbs)  in acpi_manager_get_info()  argument
331 	result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,  in acpi_manager_get_info()
334 		sbs->batteries_supported = battery_system_info & 0x000f;  in acpi_manager_get_info()
343 		result = acpi_smbus_read(battery->sbs->hc,  in acpi_battery_get_info()
364 		result = acpi_smbus_read(battery->sbs->hc,  in acpi_battery_get_state()
380 	return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,  in acpi_battery_get_alarm()
387 	struct acpi_sbs *sbs = battery->sbs;  in acpi_battery_set_alarm()  local
393 	if (sbs->manager_present) {  in acpi_battery_set_alarm()
394 		ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,  in acpi_battery_set_alarm()
401 			ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,  in acpi_battery_set_alarm()
408 	ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,  in acpi_battery_set_alarm()
414 static int acpi_ac_get_present(struct acpi_sbs *sbs)  in acpi_ac_get_present()  argument
419 	result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER,  in acpi_ac_get_present()
427 	 * that the implementation doesn't support an SBS charger.  in acpi_ac_get_present()
431 	 * wrong, so ignore the SBS charger for those too.  in acpi_ac_get_present()
436 	sbs->charger_present = (status >> 15) & 0x1;  in acpi_ac_get_present()
484 	if (battery->sbs->manager_present) {  in acpi_battery_read()
485 		result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,  in acpi_battery_read()
497 		acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,  in acpi_battery_read()
523 static int acpi_battery_add(struct acpi_sbs *sbs, int id)  in acpi_battery_add()  argument
525 	struct acpi_battery *battery = &sbs->battery[id];  in acpi_battery_add()
533 	battery->sbs = sbs;  in acpi_battery_add()
551 	battery->bat = power_supply_register(&sbs->device->dev,  in acpi_battery_add()
561 	       ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),  in acpi_battery_add()
566 static void acpi_battery_remove(struct acpi_sbs *sbs, int id)  in acpi_battery_remove()  argument
568 	struct acpi_battery *battery = &sbs->battery[id];  in acpi_battery_remove()
574 static int acpi_charger_add(struct acpi_sbs *sbs)  in acpi_charger_add()  argument
577 	struct power_supply_config psy_cfg = { .drv_data = sbs, };  in acpi_charger_add()
579 	result = acpi_ac_get_present(sbs);  in acpi_charger_add()
583 	sbs->charger_exists = 1;  in acpi_charger_add()
584 	sbs->charger = power_supply_register(&sbs->device->dev,  in acpi_charger_add()
586 	if (IS_ERR(sbs->charger)) {  in acpi_charger_add()
587 		result = PTR_ERR(sbs->charger);  in acpi_charger_add()
588 		sbs->charger = NULL;  in acpi_charger_add()
591 	       ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),  in acpi_charger_add()
592 	       ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");  in acpi_charger_add()
597 static void acpi_charger_remove(struct acpi_sbs *sbs)  in acpi_charger_remove()  argument
599 	if (sbs->charger)  in acpi_charger_remove()
600 		power_supply_unregister(sbs->charger);  in acpi_charger_remove()
606 	struct acpi_sbs *sbs = context;  in acpi_sbs_callback()  local
608 	u8 saved_charger_state = sbs->charger_present;  in acpi_sbs_callback()
611 	if (sbs->charger_exists) {  in acpi_sbs_callback()
612 		acpi_ac_get_present(sbs);  in acpi_sbs_callback()
613 		if (sbs->charger_present != saved_charger_state)  in acpi_sbs_callback()
614 			power_supply_changed(sbs->charger);  in acpi_sbs_callback()
617 	if (sbs->manager_present) {  in acpi_sbs_callback()
619 			if (!(sbs->batteries_supported & (1 << id)))  in acpi_sbs_callback()
621 			bat = &sbs->battery[id];  in acpi_sbs_callback()
633 	struct acpi_sbs *sbs;  in acpi_sbs_add()  local
637 	sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);  in acpi_sbs_add()
638 	if (!sbs) {  in acpi_sbs_add()
643 	mutex_init(&sbs->lock);  in acpi_sbs_add()
645 	sbs->hc = acpi_driver_data(acpi_dev_parent(device));  in acpi_sbs_add()
646 	sbs->device = device;  in acpi_sbs_add()
649 	device->driver_data = sbs;  in acpi_sbs_add()
651 	result = acpi_charger_add(sbs);  in acpi_sbs_add()
658 		result = acpi_manager_get_info(sbs);  in acpi_sbs_add()
660 			sbs->manager_present = 1;  in acpi_sbs_add()
662 				if ((sbs->batteries_supported & (1 << id)))  in acpi_sbs_add()
663 					acpi_battery_add(sbs, id);  in acpi_sbs_add()
667 	if (!sbs->manager_present)  in acpi_sbs_add()
668 		acpi_battery_add(sbs, 0);  in acpi_sbs_add()
670 	acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);  in acpi_sbs_add()
679 	struct acpi_sbs *sbs;  in acpi_sbs_remove()  local
684 	sbs = acpi_driver_data(device);  in acpi_sbs_remove()
685 	if (!sbs)  in acpi_sbs_remove()
687 	mutex_lock(&sbs->lock);  in acpi_sbs_remove()
688 	acpi_smbus_unregister_callback(sbs->hc);  in acpi_sbs_remove()
690 		acpi_battery_remove(sbs, id);  in acpi_sbs_remove()
691 	acpi_charger_remove(sbs);  in acpi_sbs_remove()
692 	mutex_unlock(&sbs->lock);  in acpi_sbs_remove()
693 	mutex_destroy(&sbs->lock);  in acpi_sbs_remove()
694 	kfree(sbs);  in acpi_sbs_remove()
700 	struct acpi_sbs *sbs;  in acpi_sbs_resume()  local
703 	sbs = to_acpi_device(dev)->driver_data;  in acpi_sbs_resume()
704 	acpi_sbs_callback(sbs);  in acpi_sbs_resume()
714 	.name = "sbs",