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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Bjorn Helgaas50a4da82009-04-08 15:39:38 +00002 * button.c - ACPI Button Driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or (at
12 * your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
25
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <linux/init.h>
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -040029#include <linux/types.h>
30#include <linux/proc_fs.h>
31#include <linux/seq_file.h>
Dmitry Torokhovc0968f02006-11-09 00:40:13 -050032#include <linux/input.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090033#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include <acpi/acpi_bus.h>
35#include <acpi/acpi_drivers.h>
Andy Shevchenko6270da62013-03-11 09:17:04 +000036#include <acpi/button.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Len Browna192a952009-07-28 16:45:54 -040038#define PREFIX "ACPI: "
39
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#define ACPI_BUTTON_CLASS "button"
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -040041#define ACPI_BUTTON_FILE_INFO "info"
42#define ACPI_BUTTON_FILE_STATE "state"
43#define ACPI_BUTTON_TYPE_UNKNOWN 0x00
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#define ACPI_BUTTON_NOTIFY_STATUS 0x80
45
46#define ACPI_BUTTON_SUBCLASS_POWER "power"
Len Brown4be44fc2005-08-05 00:44:28 -040047#define ACPI_BUTTON_HID_POWER "PNP0C0C"
Bjorn Helgaasd68b5972009-04-08 15:40:04 +000048#define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button"
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#define ACPI_BUTTON_TYPE_POWER 0x01
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
51#define ACPI_BUTTON_SUBCLASS_SLEEP "sleep"
52#define ACPI_BUTTON_HID_SLEEP "PNP0C0E"
Bjorn Helgaasd68b5972009-04-08 15:40:04 +000053#define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button"
Linus Torvalds1da177e2005-04-16 15:20:36 -070054#define ACPI_BUTTON_TYPE_SLEEP 0x03
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
56#define ACPI_BUTTON_SUBCLASS_LID "lid"
57#define ACPI_BUTTON_HID_LID "PNP0C0D"
58#define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch"
59#define ACPI_BUTTON_TYPE_LID 0x05
60
61#define _COMPONENT ACPI_BUTTON_COMPONENT
Len Brownf52fd662007-02-12 22:42:12 -050062ACPI_MODULE_NAME("button");
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
Dmitry Torokhovc0968f02006-11-09 00:40:13 -050064MODULE_AUTHOR("Paul Diefenbaugh");
Len Brown7cda93e2007-02-12 23:50:02 -050065MODULE_DESCRIPTION("ACPI Button Driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -070066MODULE_LICENSE("GPL");
67
Thomas Renninger1ba90e32007-07-23 14:44:41 +020068static const struct acpi_device_id button_device_ids[] = {
69 {ACPI_BUTTON_HID_LID, 0},
70 {ACPI_BUTTON_HID_SLEEP, 0},
71 {ACPI_BUTTON_HID_SLEEPF, 0},
72 {ACPI_BUTTON_HID_POWER, 0},
73 {ACPI_BUTTON_HID_POWERF, 0},
74 {"", 0},
75};
76MODULE_DEVICE_TABLE(acpi, button_device_ids);
77
Len Brown4be44fc2005-08-05 00:44:28 -040078static int acpi_button_add(struct acpi_device *device);
Rafael J. Wysocki51fac832013-01-24 00:24:48 +010079static int acpi_button_remove(struct acpi_device *device);
Bjorn Helgaas373cfc32009-03-30 17:48:18 +000080static void acpi_button_notify(struct acpi_device *device, u32 event);
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
Rafael J. Wysocki90692402012-08-09 23:00:02 +020082#ifdef CONFIG_PM_SLEEP
Rafael J. Wysocki1be532d2012-06-27 23:26:51 +020083static int acpi_button_resume(struct device *dev);
Rafael J. Wysocki90692402012-08-09 23:00:02 +020084#endif
Rafael J. Wysocki1be532d2012-06-27 23:26:51 +020085static SIMPLE_DEV_PM_OPS(acpi_button_pm, NULL, acpi_button_resume);
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087static struct acpi_driver acpi_button_driver = {
Len Brownc2b67052007-02-12 23:33:40 -050088 .name = "button",
Len Brown4be44fc2005-08-05 00:44:28 -040089 .class = ACPI_BUTTON_CLASS,
Thomas Renninger1ba90e32007-07-23 14:44:41 +020090 .ids = button_device_ids,
Len Brown4be44fc2005-08-05 00:44:28 -040091 .ops = {
92 .add = acpi_button_add,
93 .remove = acpi_button_remove,
Bjorn Helgaas373cfc32009-03-30 17:48:18 +000094 .notify = acpi_button_notify,
Dmitry Torokhovc0968f02006-11-09 00:40:13 -050095 },
Rafael J. Wysocki1be532d2012-06-27 23:26:51 +020096 .drv.pm = &acpi_button_pm,
Linus Torvalds1da177e2005-04-16 15:20:36 -070097};
98
99struct acpi_button {
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500100 unsigned int type;
101 struct input_dev *input;
102 char phys[32]; /* for input device */
Len Brown4be44fc2005-08-05 00:44:28 -0400103 unsigned long pushed;
Rafael J. Wysockic19f9a82011-02-08 23:41:13 +0100104 bool wakeup_enabled;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105};
106
Jesse Barnes7e127152009-09-10 15:28:02 -0700107static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier);
108static struct acpi_device *lid_device;
109
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400110/* --------------------------------------------------------------------------
111 FS Interface (/proc)
112 -------------------------------------------------------------------------- */
113
Len Brown4be44fc2005-08-05 00:44:28 -0400114static struct proc_dir_entry *acpi_button_dir;
Zhang Rui912b7422011-03-23 10:21:40 +0800115static struct proc_dir_entry *acpi_lid_dir;
Len Brown4be44fc2005-08-05 00:44:28 -0400116
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400117static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
118{
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000119 struct acpi_device *device = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400120 acpi_status status;
Matthew Wilcox27663c52008-10-10 02:22:59 -0400121 unsigned long long state;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400122
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000123 status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500124 seq_printf(seq, "state: %s\n",
125 ACPI_FAILURE(status) ? "unsupported" :
126 (state ? "open" : "closed"));
Patrick Mocheld550d982006-06-27 00:41:40 -0400127 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400128}
129
130static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
131{
Al Virod9dda782013-03-31 18:16:14 -0400132 return single_open(file, acpi_button_state_seq_show, PDE_DATA(inode));
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400133}
134
Zhang Rui912b7422011-03-23 10:21:40 +0800135static const struct file_operations acpi_button_state_fops = {
136 .owner = THIS_MODULE,
137 .open = acpi_button_state_open_fs,
138 .read = seq_read,
139 .llseek = seq_lseek,
140 .release = single_release,
141};
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400142
Len Brown4be44fc2005-08-05 00:44:28 -0400143static int acpi_button_add_fs(struct acpi_device *device)
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400144{
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000145 struct acpi_button *button = acpi_driver_data(device);
Len Brown4be44fc2005-08-05 00:44:28 -0400146 struct proc_dir_entry *entry = NULL;
Zhang Rui912b7422011-03-23 10:21:40 +0800147 int ret = 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400148
Zhang Rui912b7422011-03-23 10:21:40 +0800149 /* procfs I/F for ACPI lid device only */
150 if (button->type != ACPI_BUTTON_TYPE_LID)
151 return 0;
152
153 if (acpi_button_dir || acpi_lid_dir) {
154 printk(KERN_ERR PREFIX "More than one Lid device found!\n");
155 return -EEXIST;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400156 }
157
Zhang Rui912b7422011-03-23 10:21:40 +0800158 /* create /proc/acpi/button */
159 acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
160 if (!acpi_button_dir)
Patrick Mocheld550d982006-06-27 00:41:40 -0400161 return -ENODEV;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400162
Zhang Rui912b7422011-03-23 10:21:40 +0800163 /* create /proc/acpi/button/lid */
164 acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
165 if (!acpi_lid_dir) {
166 ret = -ENODEV;
167 goto remove_button_dir;
168 }
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400169
Zhang Rui912b7422011-03-23 10:21:40 +0800170 /* create /proc/acpi/button/lid/LID/ */
171 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_lid_dir);
172 if (!acpi_device_dir(device)) {
173 ret = -ENODEV;
174 goto remove_lid_dir;
175 }
176
177 /* create /proc/acpi/button/lid/LID/state */
178 entry = proc_create_data(ACPI_BUTTON_FILE_STATE,
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700179 S_IRUGO, acpi_device_dir(device),
Zhang Rui912b7422011-03-23 10:21:40 +0800180 &acpi_button_state_fops, device);
181 if (!entry) {
182 ret = -ENODEV;
183 goto remove_dev_dir;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400184 }
185
Zhang Rui912b7422011-03-23 10:21:40 +0800186done:
187 return ret;
188
189remove_dev_dir:
190 remove_proc_entry(acpi_device_bid(device),
191 acpi_lid_dir);
192 acpi_device_dir(device) = NULL;
193remove_lid_dir:
194 remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
195remove_button_dir:
196 remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
197 goto done;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400198}
199
Len Brown4be44fc2005-08-05 00:44:28 -0400200static int acpi_button_remove_fs(struct acpi_device *device)
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400201{
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500202 struct acpi_button *button = acpi_driver_data(device);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400203
Zhang Rui912b7422011-03-23 10:21:40 +0800204 if (button->type != ACPI_BUTTON_TYPE_LID)
205 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400206
Zhang Rui912b7422011-03-23 10:21:40 +0800207 remove_proc_entry(ACPI_BUTTON_FILE_STATE,
208 acpi_device_dir(device));
209 remove_proc_entry(acpi_device_bid(device),
210 acpi_lid_dir);
211 acpi_device_dir(device) = NULL;
212 remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
213 remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400214
Patrick Mocheld550d982006-06-27 00:41:40 -0400215 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400216}
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218/* --------------------------------------------------------------------------
219 Driver Interface
220 -------------------------------------------------------------------------- */
Jesse Barnes7e127152009-09-10 15:28:02 -0700221int acpi_lid_notifier_register(struct notifier_block *nb)
222{
223 return blocking_notifier_chain_register(&acpi_lid_notifier, nb);
224}
225EXPORT_SYMBOL(acpi_lid_notifier_register);
226
227int acpi_lid_notifier_unregister(struct notifier_block *nb)
228{
229 return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb);
230}
231EXPORT_SYMBOL(acpi_lid_notifier_unregister);
232
233int acpi_lid_open(void)
234{
235 acpi_status status;
236 unsigned long long state;
237
Jesse Barnes2c907b72009-10-07 14:39:46 -0700238 if (!lid_device)
239 return -ENODEV;
240
Jesse Barnes7e127152009-09-10 15:28:02 -0700241 status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL,
242 &state);
243 if (ACPI_FAILURE(status))
244 return -ENODEV;
245
246 return !!state;
247}
248EXPORT_SYMBOL(acpi_lid_open);
249
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000250static int acpi_lid_send_state(struct acpi_device *device)
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400251{
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000252 struct acpi_button *button = acpi_driver_data(device);
Matthew Wilcox27663c52008-10-10 02:22:59 -0400253 unsigned long long state;
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400254 acpi_status status;
Jesse Barnes7e127152009-09-10 15:28:02 -0700255 int ret;
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400256
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000257 status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400258 if (ACPI_FAILURE(status))
259 return -ENODEV;
Bjorn Helgaas50a4da82009-04-08 15:39:38 +0000260
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400261 /* input layer checks if event is redundant */
262 input_report_switch(button->input, SW_LID, !state);
Guillem Joverdf316e92008-10-24 00:28:33 +0300263 input_sync(button->input);
Jesse Barnes7e127152009-09-10 15:28:02 -0700264
Rafael J. Wysocki1f835112011-01-06 23:36:01 +0100265 if (state)
266 pm_wakeup_event(&device->dev, 0);
267
Jesse Barnes7e127152009-09-10 15:28:02 -0700268 ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device);
269 if (ret == NOTIFY_DONE)
270 ret = blocking_notifier_call_chain(&acpi_lid_notifier, state,
271 device);
Zhao Yakui13c199c2009-12-15 22:01:57 +0800272 if (ret == NOTIFY_DONE || ret == NOTIFY_OK) {
273 /*
274 * It is also regarded as success if the notifier_chain
275 * returns NOTIFY_OK or NOTIFY_DONE.
276 */
277 ret = 0;
278 }
Jesse Barnes7e127152009-09-10 15:28:02 -0700279 return ret;
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400280}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000282static void acpi_button_notify(struct acpi_device *device, u32 event)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283{
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000284 struct acpi_button *button = acpi_driver_data(device);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500285 struct input_dev *input;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 switch (event) {
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000288 case ACPI_FIXED_HARDWARE_EVENT:
289 event = ACPI_BUTTON_NOTIFY_STATUS;
290 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 case ACPI_BUTTON_NOTIFY_STATUS:
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500292 input = button->input;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500293 if (button->type == ACPI_BUTTON_TYPE_LID) {
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000294 acpi_lid_send_state(device);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500295 } else {
296 int keycode = test_bit(KEY_SLEEP, input->keybit) ?
297 KEY_SLEEP : KEY_POWER;
298
299 input_report_key(input, keycode, 1);
300 input_sync(input);
301 input_report_key(input, keycode, 0);
Guillem Joverdf316e92008-10-24 00:28:33 +0300302 input_sync(input);
Rafael J. Wysocki1f835112011-01-06 23:36:01 +0100303
304 pm_wakeup_event(&device->dev, 0);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500305 }
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500306
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000307 acpi_bus_generate_proc_event(device, event, ++button->pushed);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 break;
309 default:
310 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -0400311 "Unsupported event [0x%x]\n", event));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 break;
313 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314}
315
Rafael J. Wysocki90692402012-08-09 23:00:02 +0200316#ifdef CONFIG_PM_SLEEP
Rafael J. Wysocki1be532d2012-06-27 23:26:51 +0200317static int acpi_button_resume(struct device *dev)
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400318{
Rafael J. Wysocki1be532d2012-06-27 23:26:51 +0200319 struct acpi_device *device = to_acpi_device(dev);
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000320 struct acpi_button *button = acpi_driver_data(device);
Bjorn Helgaas50a4da82009-04-08 15:39:38 +0000321
Bjorn Helgaase2fb9752009-04-08 15:39:43 +0000322 if (button->type == ACPI_BUTTON_TYPE_LID)
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000323 return acpi_lid_send_state(device);
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400324 return 0;
325}
Rafael J. Wysocki90692402012-08-09 23:00:02 +0200326#endif
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400327
Len Brown4be44fc2005-08-05 00:44:28 -0400328static int acpi_button_add(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329{
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500330 struct acpi_button *button;
331 struct input_dev *input;
Thomas Renninger620e1122010-10-01 10:54:00 +0200332 const char *hid = acpi_device_hid(device);
333 char *name, *class;
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000334 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500336 button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 if (!button)
Patrick Mocheld550d982006-06-27 00:41:40 -0400338 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
Pavel Machekdb89b4f2008-09-22 14:37:34 -0700340 device->driver_data = button;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500342 button->input = input = input_allocate_device();
343 if (!input) {
344 error = -ENOMEM;
345 goto err_free_button;
346 }
347
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000348 name = acpi_device_name(device);
349 class = acpi_device_class(device);
350
Bjorn Helgaasd68b5972009-04-08 15:40:04 +0000351 if (!strcmp(hid, ACPI_BUTTON_HID_POWER) ||
352 !strcmp(hid, ACPI_BUTTON_HID_POWERF)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 button->type = ACPI_BUTTON_TYPE_POWER;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000354 strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER);
355 sprintf(class, "%s/%s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
Bjorn Helgaasd68b5972009-04-08 15:40:04 +0000357 } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) ||
358 !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 button->type = ACPI_BUTTON_TYPE_SLEEP;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000360 strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP);
361 sprintf(class, "%s/%s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000363 } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 button->type = ACPI_BUTTON_TYPE_LID;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000365 strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID);
366 sprintf(class, "%s/%s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
Len Brown4be44fc2005-08-05 00:44:28 -0400368 } else {
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000369 printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500370 error = -ENODEV;
371 goto err_free_input;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 }
373
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500374 error = acpi_button_add_fs(device);
375 if (error)
376 goto err_free_input;
377
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000378 snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500379
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000380 input->name = name;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500381 input->phys = button->phys;
382 input->id.bustype = BUS_HOST;
383 input->id.product = button->type;
Andrey Borzenkov3b34e522008-03-04 15:06:35 -0800384 input->dev.parent = &device->dev;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400385
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 switch (button->type) {
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500387 case ACPI_BUTTON_TYPE_POWER:
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700388 input->evbit[0] = BIT_MASK(EV_KEY);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500389 set_bit(KEY_POWER, input->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 break;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500391
392 case ACPI_BUTTON_TYPE_SLEEP:
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700393 input->evbit[0] = BIT_MASK(EV_KEY);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500394 set_bit(KEY_SLEEP, input->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 break;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500396
397 case ACPI_BUTTON_TYPE_LID:
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700398 input->evbit[0] = BIT_MASK(EV_SW);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500399 set_bit(SW_LID, input->swbit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 break;
401 }
402
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500403 error = input_register_device(input);
404 if (error)
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000405 goto err_remove_fs;
Jesse Barnes7e127152009-09-10 15:28:02 -0700406 if (button->type == ACPI_BUTTON_TYPE_LID) {
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000407 acpi_lid_send_state(device);
Jesse Barnes7e127152009-09-10 15:28:02 -0700408 /*
409 * This assumes there's only one lid device, or if there are
410 * more we only care about the last one...
411 */
412 lid_device = device;
413 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414
415 if (device->wakeup.flags.valid) {
416 /* Button's GPE is run-wake GPE */
Len Brown4be44fc2005-08-05 00:44:28 -0400417 acpi_enable_gpe(device->wakeup.gpe_device,
Rafael J. Wysockia44061a2010-07-01 10:11:45 +0800418 device->wakeup.gpe_number);
Rafael J. Wysockic19f9a82011-02-08 23:41:13 +0100419 if (!device_may_wakeup(&device->dev)) {
420 device_set_wakeup_enable(&device->dev, true);
421 button->wakeup_enabled = true;
422 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 }
424
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000425 printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500426 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500428 err_remove_fs:
429 acpi_button_remove_fs(device);
430 err_free_input:
431 input_free_device(input);
432 err_free_button:
433 kfree(button);
434 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435}
436
Rafael J. Wysocki51fac832013-01-24 00:24:48 +0100437static int acpi_button_remove(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438{
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000439 struct acpi_button *button = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Rafael J. Wysocki9630bdd2010-02-17 23:41:07 +0100441 if (device->wakeup.flags.valid) {
442 acpi_disable_gpe(device->wakeup.gpe_device,
Rafael J. Wysockia44061a2010-07-01 10:11:45 +0800443 device->wakeup.gpe_number);
Rafael J. Wysockic19f9a82011-02-08 23:41:13 +0100444 if (button->wakeup_enabled)
445 device_set_wakeup_enable(&device->dev, false);
Rafael J. Wysocki9630bdd2010-02-17 23:41:07 +0100446 }
447
Len Brown4be44fc2005-08-05 00:44:28 -0400448 acpi_button_remove_fs(device);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500449 input_unregister_device(button->input);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 kfree(button);
Patrick Mocheld550d982006-06-27 00:41:40 -0400451 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452}
453
Mika Westerberg466e78f2012-09-07 10:31:39 +0300454module_acpi_driver(acpi_button_driver);