1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  acpi_ac.c - ACPI AC Adapter Driver ($Revision: 27 $)
54 /* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
56 	{ "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
57 	{ "INT34D3",  3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
91 /* --------------------------------------------------------------------------
93    -------------------------------------------------------------------------- */
100 		return -EINVAL;  in acpi_ac_get_state()
102 	status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL,  in acpi_ac_get_state()
103 				       &ac->state);  in acpi_ac_get_state()
107 		ac->state = ACPI_AC_STATUS_UNKNOWN;  in acpi_ac_get_state()
108 		return -ENODEV;  in acpi_ac_get_state()
114 /* --------------------------------------------------------------------------
116    -------------------------------------------------------------------------- */
124 		return -ENODEV;  in get_ac_property()
127 		return -ENODEV;  in get_ac_property()
131 		val->intval = ac->state;  in get_ac_property()
134 		return -EINVAL;  in get_ac_property()
143 /* --------------------------------------------------------------------------
145    -------------------------------------------------------------------------- */
164 		 * a specific time before doing actual operations in the  in acpi_ac_notify()
167 		 * specific time for the EC event handler to make progress.  in acpi_ac_notify()
173 		acpi_bus_generate_netlink_event(device->pnp.device_class,  in acpi_ac_notify()
174 						  dev_name(&device->dev), event,  in acpi_ac_notify()
175 						  (u32) ac->state);  in acpi_ac_notify()
176 		acpi_notifier_call_chain(device, event, (u32) ac->state);  in acpi_ac_notify()
177 		kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);  in acpi_ac_notify()
190 	 * On HP Pavilion dv6-6179er AC status notifications aren't triggered  in acpi_ac_battery_notify()
193 	 * discharging. Re-reading AC status triggers lost AC notifications,  in acpi_ac_battery_notify()
196 	if (strcmp(event->device_class, ACPI_BATTERY_CLASS) == 0 &&  in acpi_ac_battery_notify()
197 	    event->type == ACPI_BATTERY_NOTIFY_STATUS)  in acpi_ac_battery_notify()
218 		/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
225 		/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
230 			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
252 		return -EINVAL;  in acpi_ac_add()
256 		return -ENOMEM;  in acpi_ac_add()
258 	ac->device = device;  in acpi_ac_add()
261 	device->driver_data = ac;  in acpi_ac_add()
269 	ac->charger_desc.name = acpi_device_bid(device);  in acpi_ac_add()
270 	ac->charger_desc.type = POWER_SUPPLY_TYPE_MAINS;  in acpi_ac_add()
271 	ac->charger_desc.properties = ac_props;  in acpi_ac_add()
272 	ac->charger_desc.num_properties = ARRAY_SIZE(ac_props);  in acpi_ac_add()
273 	ac->charger_desc.get_property = get_ac_property;  in acpi_ac_add()
274 	ac->charger = power_supply_register(&ac->device->dev,  in acpi_ac_add()
275 					    &ac->charger_desc, &psy_cfg);  in acpi_ac_add()
276 	if (IS_ERR(ac->charger)) {  in acpi_ac_add()
277 		result = PTR_ERR(ac->charger);  in acpi_ac_add()
283 	       ac->state ? "on-line" : "off-line");  in acpi_ac_add()
285 	ac->battery_nb.notifier_call = acpi_ac_battery_notify;  in acpi_ac_add()
286 	register_acpi_notifier(&ac->battery_nb);  in acpi_ac_add()
302 		return -EINVAL;  in acpi_ac_resume()
306 		return -EINVAL;  in acpi_ac_resume()
308 	old_state = ac->state;  in acpi_ac_resume()
311 	if (old_state != ac->state)  in acpi_ac_resume()
312 		kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);  in acpi_ac_resume()
325 		return -EINVAL;  in acpi_ac_remove()
329 	power_supply_unregister(ac->charger);  in acpi_ac_remove()
330 	unregister_acpi_notifier(&ac->battery_nb);  in acpi_ac_remove()
343 		return -ENODEV;  in acpi_ac_init()
351 				pr_info(PREFIX "AC: found native %s PMIC, not loading\n",  in acpi_ac_init()
353 				return -ENODEV;  in acpi_ac_init()
359 		return -ENODEV;  in acpi_ac_init()