blob: f53fbe307c9dba027d9e4dc53867f0579da2f783 [file] [log] [blame]
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#include <acpi/acpi_bus.h>
34#include <acpi/acpi_drivers.h>
35
Len Browna192a952009-07-28 16:45:54 -040036#define PREFIX "ACPI: "
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#define ACPI_BUTTON_CLASS "button"
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -040039#define ACPI_BUTTON_FILE_INFO "info"
40#define ACPI_BUTTON_FILE_STATE "state"
41#define ACPI_BUTTON_TYPE_UNKNOWN 0x00
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#define ACPI_BUTTON_NOTIFY_STATUS 0x80
43
44#define ACPI_BUTTON_SUBCLASS_POWER "power"
Len Brown4be44fc2005-08-05 00:44:28 -040045#define ACPI_BUTTON_HID_POWER "PNP0C0C"
Bjorn Helgaasd68b5972009-04-08 15:40:04 +000046#define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button"
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#define ACPI_BUTTON_TYPE_POWER 0x01
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49#define ACPI_BUTTON_SUBCLASS_SLEEP "sleep"
50#define ACPI_BUTTON_HID_SLEEP "PNP0C0E"
Bjorn Helgaasd68b5972009-04-08 15:40:04 +000051#define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button"
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#define ACPI_BUTTON_TYPE_SLEEP 0x03
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54#define ACPI_BUTTON_SUBCLASS_LID "lid"
55#define ACPI_BUTTON_HID_LID "PNP0C0D"
56#define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch"
57#define ACPI_BUTTON_TYPE_LID 0x05
58
59#define _COMPONENT ACPI_BUTTON_COMPONENT
Len Brownf52fd662007-02-12 22:42:12 -050060ACPI_MODULE_NAME("button");
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Dmitry Torokhovc0968f02006-11-09 00:40:13 -050062MODULE_AUTHOR("Paul Diefenbaugh");
Len Brown7cda93e2007-02-12 23:50:02 -050063MODULE_DESCRIPTION("ACPI Button Driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -070064MODULE_LICENSE("GPL");
65
Thomas Renninger1ba90e32007-07-23 14:44:41 +020066static const struct acpi_device_id button_device_ids[] = {
67 {ACPI_BUTTON_HID_LID, 0},
68 {ACPI_BUTTON_HID_SLEEP, 0},
69 {ACPI_BUTTON_HID_SLEEPF, 0},
70 {ACPI_BUTTON_HID_POWER, 0},
71 {ACPI_BUTTON_HID_POWERF, 0},
72 {"", 0},
73};
74MODULE_DEVICE_TABLE(acpi, button_device_ids);
75
Len Brown4be44fc2005-08-05 00:44:28 -040076static int acpi_button_add(struct acpi_device *device);
77static int acpi_button_remove(struct acpi_device *device, int type);
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +040078static int acpi_button_resume(struct acpi_device *device);
Bjorn Helgaas373cfc32009-03-30 17:48:18 +000079static void acpi_button_notify(struct acpi_device *device, u32 event);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -040080static int acpi_button_info_open_fs(struct inode *inode, struct file *file);
81static int acpi_button_state_open_fs(struct inode *inode, struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83static struct acpi_driver acpi_button_driver = {
Len Brownc2b6705b2007-02-12 23:33:40 -050084 .name = "button",
Len Brown4be44fc2005-08-05 00:44:28 -040085 .class = ACPI_BUTTON_CLASS,
Thomas Renninger1ba90e32007-07-23 14:44:41 +020086 .ids = button_device_ids,
Len Brown4be44fc2005-08-05 00:44:28 -040087 .ops = {
88 .add = acpi_button_add,
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +040089 .resume = acpi_button_resume,
Len Brown4be44fc2005-08-05 00:44:28 -040090 .remove = acpi_button_remove,
Bjorn Helgaas373cfc32009-03-30 17:48:18 +000091 .notify = acpi_button_notify,
Dmitry Torokhovc0968f02006-11-09 00:40:13 -050092 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070093};
94
95struct acpi_button {
Dmitry Torokhovc0968f02006-11-09 00:40:13 -050096 unsigned int type;
97 struct input_dev *input;
98 char phys[32]; /* for input device */
Len Brown4be44fc2005-08-05 00:44:28 -040099 unsigned long pushed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100};
101
Arjan van de Vend7508032006-07-04 13:06:00 -0400102static const struct file_operations acpi_button_info_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700103 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400104 .open = acpi_button_info_open_fs,
105 .read = seq_read,
106 .llseek = seq_lseek,
107 .release = single_release,
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400108};
109
Arjan van de Vend7508032006-07-04 13:06:00 -0400110static const struct file_operations acpi_button_state_fops = {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700111 .owner = THIS_MODULE,
Len Brown4be44fc2005-08-05 00:44:28 -0400112 .open = acpi_button_state_open_fs,
113 .read = seq_read,
114 .llseek = seq_lseek,
115 .release = single_release,
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400116};
Len Brown4be44fc2005-08-05 00:44:28 -0400117
Jesse Barnes7e127152009-09-10 15:28:02 -0700118static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier);
119static struct acpi_device *lid_device;
120
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400121/* --------------------------------------------------------------------------
122 FS Interface (/proc)
123 -------------------------------------------------------------------------- */
124
Len Brown4be44fc2005-08-05 00:44:28 -0400125static struct proc_dir_entry *acpi_button_dir;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400126
127static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
128{
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000129 struct acpi_device *device = seq->private;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400130
Len Brown4be44fc2005-08-05 00:44:28 -0400131 seq_printf(seq, "type: %s\n",
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000132 acpi_device_name(device));
Patrick Mocheld550d982006-06-27 00:41:40 -0400133 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400134}
135
136static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
137{
138 return single_open(file, acpi_button_info_seq_show, PDE(inode)->data);
139}
Len Brown4be44fc2005-08-05 00:44:28 -0400140
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400141static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
142{
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000143 struct acpi_device *device = seq->private;
Len Brown4be44fc2005-08-05 00:44:28 -0400144 acpi_status status;
Matthew Wilcox27663c52008-10-10 02:22:59 -0400145 unsigned long long state;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400146
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000147 status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500148 seq_printf(seq, "state: %s\n",
149 ACPI_FAILURE(status) ? "unsupported" :
150 (state ? "open" : "closed"));
Patrick Mocheld550d982006-06-27 00:41:40 -0400151 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400152}
153
154static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
155{
156 return single_open(file, acpi_button_state_seq_show, PDE(inode)->data);
157}
158
159static struct proc_dir_entry *acpi_power_dir;
160static struct proc_dir_entry *acpi_sleep_dir;
161static struct proc_dir_entry *acpi_lid_dir;
162
Len Brown4be44fc2005-08-05 00:44:28 -0400163static int acpi_button_add_fs(struct acpi_device *device)
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400164{
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000165 struct acpi_button *button = acpi_driver_data(device);
Len Brown4be44fc2005-08-05 00:44:28 -0400166 struct proc_dir_entry *entry = NULL;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400167
168 switch (button->type) {
169 case ACPI_BUTTON_TYPE_POWER:
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400170 if (!acpi_power_dir)
Len Brown4be44fc2005-08-05 00:44:28 -0400171 acpi_power_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER,
172 acpi_button_dir);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400173 entry = acpi_power_dir;
174 break;
175 case ACPI_BUTTON_TYPE_SLEEP:
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400176 if (!acpi_sleep_dir)
Len Brown4be44fc2005-08-05 00:44:28 -0400177 acpi_sleep_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP,
178 acpi_button_dir);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400179 entry = acpi_sleep_dir;
180 break;
181 case ACPI_BUTTON_TYPE_LID:
182 if (!acpi_lid_dir)
Len Brown4be44fc2005-08-05 00:44:28 -0400183 acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID,
184 acpi_button_dir);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400185 entry = acpi_lid_dir;
186 break;
187 }
188
189 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -0400190 return -ENODEV;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400191
192 acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
193 if (!acpi_device_dir(device))
Patrick Mocheld550d982006-06-27 00:41:40 -0400194 return -ENODEV;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400195
196 /* 'info' [R] */
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700197 entry = proc_create_data(ACPI_BUTTON_FILE_INFO,
198 S_IRUGO, acpi_device_dir(device),
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000199 &acpi_button_info_fops, device);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400200 if (!entry)
Patrick Mocheld550d982006-06-27 00:41:40 -0400201 return -ENODEV;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400202
203 /* show lid state [R] */
204 if (button->type == ACPI_BUTTON_TYPE_LID) {
Denis V. Lunevcf7acfa2008-04-29 01:02:27 -0700205 entry = proc_create_data(ACPI_BUTTON_FILE_STATE,
206 S_IRUGO, acpi_device_dir(device),
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000207 &acpi_button_state_fops, device);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400208 if (!entry)
Thomas Renningera6fc6722006-06-26 23:58:43 -0400209 return -ENODEV;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400210 }
211
Patrick Mocheld550d982006-06-27 00:41:40 -0400212 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400213}
214
Len Brown4be44fc2005-08-05 00:44:28 -0400215static int acpi_button_remove_fs(struct acpi_device *device)
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400216{
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500217 struct acpi_button *button = acpi_driver_data(device);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400218
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400219 if (acpi_device_dir(device)) {
220 if (button->type == ACPI_BUTTON_TYPE_LID)
221 remove_proc_entry(ACPI_BUTTON_FILE_STATE,
Len Brown4be44fc2005-08-05 00:44:28 -0400222 acpi_device_dir(device));
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400223 remove_proc_entry(ACPI_BUTTON_FILE_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -0400224 acpi_device_dir(device));
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400225
226 remove_proc_entry(acpi_device_bid(device),
Len Brown4be44fc2005-08-05 00:44:28 -0400227 acpi_device_dir(device)->parent);
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400228 acpi_device_dir(device) = NULL;
229 }
230
Patrick Mocheld550d982006-06-27 00:41:40 -0400231 return 0;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400232}
233
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234/* --------------------------------------------------------------------------
235 Driver Interface
236 -------------------------------------------------------------------------- */
Jesse Barnes7e127152009-09-10 15:28:02 -0700237int acpi_lid_notifier_register(struct notifier_block *nb)
238{
239 return blocking_notifier_chain_register(&acpi_lid_notifier, nb);
240}
241EXPORT_SYMBOL(acpi_lid_notifier_register);
242
243int acpi_lid_notifier_unregister(struct notifier_block *nb)
244{
245 return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb);
246}
247EXPORT_SYMBOL(acpi_lid_notifier_unregister);
248
249int acpi_lid_open(void)
250{
251 acpi_status status;
252 unsigned long long state;
253
Jesse Barnes2c907b72009-10-07 14:39:46 -0700254 if (!lid_device)
255 return -ENODEV;
256
Jesse Barnes7e127152009-09-10 15:28:02 -0700257 status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL,
258 &state);
259 if (ACPI_FAILURE(status))
260 return -ENODEV;
261
262 return !!state;
263}
264EXPORT_SYMBOL(acpi_lid_open);
265
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000266static int acpi_lid_send_state(struct acpi_device *device)
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400267{
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000268 struct acpi_button *button = acpi_driver_data(device);
Matthew Wilcox27663c52008-10-10 02:22:59 -0400269 unsigned long long state;
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400270 acpi_status status;
Jesse Barnes7e127152009-09-10 15:28:02 -0700271 int ret;
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400272
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000273 status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state);
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400274 if (ACPI_FAILURE(status))
275 return -ENODEV;
Bjorn Helgaas50a4da82009-04-08 15:39:38 +0000276
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400277 /* input layer checks if event is redundant */
278 input_report_switch(button->input, SW_LID, !state);
Guillem Joverdf316e92008-10-24 00:28:33 +0300279 input_sync(button->input);
Jesse Barnes7e127152009-09-10 15:28:02 -0700280
281 ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device);
282 if (ret == NOTIFY_DONE)
283 ret = blocking_notifier_call_chain(&acpi_lid_notifier, state,
284 device);
Zhao Yakui13c199c2009-12-15 22:01:57 +0800285 if (ret == NOTIFY_DONE || ret == NOTIFY_OK) {
286 /*
287 * It is also regarded as success if the notifier_chain
288 * returns NOTIFY_OK or NOTIFY_DONE.
289 */
290 ret = 0;
291 }
Jesse Barnes7e127152009-09-10 15:28:02 -0700292 return ret;
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400293}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000295static void acpi_button_notify(struct acpi_device *device, u32 event)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296{
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000297 struct acpi_button *button = acpi_driver_data(device);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500298 struct input_dev *input;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 switch (event) {
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000301 case ACPI_FIXED_HARDWARE_EVENT:
302 event = ACPI_BUTTON_NOTIFY_STATUS;
303 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 case ACPI_BUTTON_NOTIFY_STATUS:
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500305 input = button->input;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500306 if (button->type == ACPI_BUTTON_TYPE_LID) {
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000307 acpi_lid_send_state(device);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500308 } else {
309 int keycode = test_bit(KEY_SLEEP, input->keybit) ?
310 KEY_SLEEP : KEY_POWER;
311
312 input_report_key(input, keycode, 1);
313 input_sync(input);
314 input_report_key(input, keycode, 0);
Guillem Joverdf316e92008-10-24 00:28:33 +0300315 input_sync(input);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500316 }
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500317
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000318 acpi_bus_generate_proc_event(device, event, ++button->pushed);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 break;
320 default:
321 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
Len Brown4be44fc2005-08-05 00:44:28 -0400322 "Unsupported event [0x%x]\n", event));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 break;
324 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325}
326
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400327static int acpi_button_resume(struct acpi_device *device)
328{
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000329 struct acpi_button *button = acpi_driver_data(device);
Bjorn Helgaas50a4da82009-04-08 15:39:38 +0000330
Bjorn Helgaase2fb9752009-04-08 15:39:43 +0000331 if (button->type == ACPI_BUTTON_TYPE_LID)
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000332 return acpi_lid_send_state(device);
Alexey Starikovskiy23de5d92007-10-22 14:18:18 +0400333 return 0;
334}
335
Len Brown4be44fc2005-08-05 00:44:28 -0400336static int acpi_button_add(struct acpi_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337{
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500338 struct acpi_button *button;
339 struct input_dev *input;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000340 char *hid, *name, *class;
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000341 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500343 button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 if (!button)
Patrick Mocheld550d982006-06-27 00:41:40 -0400345 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Pavel Machekdb89b4f2008-09-22 14:37:34 -0700347 device->driver_data = button;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500349 button->input = input = input_allocate_device();
350 if (!input) {
351 error = -ENOMEM;
352 goto err_free_button;
353 }
354
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000355 hid = acpi_device_hid(device);
356 name = acpi_device_name(device);
357 class = acpi_device_class(device);
358
Bjorn Helgaasd68b5972009-04-08 15:40:04 +0000359 if (!strcmp(hid, ACPI_BUTTON_HID_POWER) ||
360 !strcmp(hid, ACPI_BUTTON_HID_POWERF)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 button->type = ACPI_BUTTON_TYPE_POWER;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000362 strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER);
363 sprintf(class, "%s/%s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER);
Bjorn Helgaasd68b5972009-04-08 15:40:04 +0000365 } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) ||
366 !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 button->type = ACPI_BUTTON_TYPE_SLEEP;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000368 strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP);
369 sprintf(class, "%s/%s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP);
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000371 } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 button->type = ACPI_BUTTON_TYPE_LID;
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000373 strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID);
374 sprintf(class, "%s/%s",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID);
Len Brown4be44fc2005-08-05 00:44:28 -0400376 } else {
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000377 printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500378 error = -ENODEV;
379 goto err_free_input;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 }
381
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500382 error = acpi_button_add_fs(device);
383 if (error)
384 goto err_free_input;
385
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000386 snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500387
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000388 input->name = name;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500389 input->phys = button->phys;
390 input->id.bustype = BUS_HOST;
391 input->id.product = button->type;
Andrey Borzenkov3b34e522008-03-04 15:06:35 -0800392 input->dev.parent = &device->dev;
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 switch (button->type) {
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500395 case ACPI_BUTTON_TYPE_POWER:
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700396 input->evbit[0] = BIT_MASK(EV_KEY);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500397 set_bit(KEY_POWER, input->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 break;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500399
400 case ACPI_BUTTON_TYPE_SLEEP:
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700401 input->evbit[0] = BIT_MASK(EV_KEY);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500402 set_bit(KEY_SLEEP, input->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 break;
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500404
405 case ACPI_BUTTON_TYPE_LID:
Jiri Slaby7b19ada2007-10-18 23:40:32 -0700406 input->evbit[0] = BIT_MASK(EV_SW);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500407 set_bit(SW_LID, input->swbit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 break;
409 }
410
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500411 error = input_register_device(input);
412 if (error)
Bjorn Helgaas373cfc32009-03-30 17:48:18 +0000413 goto err_remove_fs;
Jesse Barnes7e127152009-09-10 15:28:02 -0700414 if (button->type == ACPI_BUTTON_TYPE_LID) {
Bjorn Helgaas106c19e2009-04-08 15:39:59 +0000415 acpi_lid_send_state(device);
Jesse Barnes7e127152009-09-10 15:28:02 -0700416 /*
417 * This assumes there's only one lid device, or if there are
418 * more we only care about the last one...
419 */
420 lid_device = device;
421 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 if (device->wakeup.flags.valid) {
424 /* Button's GPE is run-wake GPE */
Len Brown4be44fc2005-08-05 00:44:28 -0400425 acpi_enable_gpe(device->wakeup.gpe_device,
Rafael J. Wysocki9630bdd2010-02-17 23:41:07 +0100426 device->wakeup.gpe_number,
427 ACPI_GPE_TYPE_WAKE_RUN);
Rafael J. Wysockif5177092010-02-17 23:41:49 +0100428 device->wakeup.run_wake_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 device->wakeup.state.enabled = 1;
430 }
431
Bjorn Helgaasbf04a772009-04-08 15:39:54 +0000432 printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device));
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500433 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500435 err_remove_fs:
436 acpi_button_remove_fs(device);
437 err_free_input:
438 input_free_device(input);
439 err_free_button:
440 kfree(button);
441 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442}
443
Len Brown4be44fc2005-08-05 00:44:28 -0400444static int acpi_button_remove(struct acpi_device *device, int type)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445{
Bjorn Helgaas1bce8112009-04-08 15:39:49 +0000446 struct acpi_button *button = acpi_driver_data(device);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
Rafael J. Wysocki9630bdd2010-02-17 23:41:07 +0100448 if (device->wakeup.flags.valid) {
449 acpi_disable_gpe(device->wakeup.gpe_device,
450 device->wakeup.gpe_number,
451 ACPI_GPE_TYPE_WAKE_RUN);
Rafael J. Wysockif5177092010-02-17 23:41:49 +0100452 device->wakeup.run_wake_count--;
Rafael J. Wysocki9630bdd2010-02-17 23:41:07 +0100453 device->wakeup.state.enabled = 0;
454 }
455
Len Brown4be44fc2005-08-05 00:44:28 -0400456 acpi_button_remove_fs(device);
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500457 input_unregister_device(button->input);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 kfree(button);
Patrick Mocheld550d982006-06-27 00:41:40 -0400459 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460}
461
Len Brown4be44fc2005-08-05 00:44:28 -0400462static int __init acpi_button_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463{
Dmitry Torokhovc0968f02006-11-09 00:40:13 -0500464 int result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400466 acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
467 if (!acpi_button_dir)
Patrick Mocheld550d982006-06-27 00:41:40 -0400468 return -ENODEV;
Bjorn Helgaas50a4da82009-04-08 15:39:38 +0000469
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 result = acpi_bus_register_driver(&acpi_button_driver);
471 if (result < 0) {
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400472 remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
Patrick Mocheld550d982006-06-27 00:41:40 -0400473 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 }
475
Patrick Mocheld550d982006-06-27 00:41:40 -0400476 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477}
478
Len Brown4be44fc2005-08-05 00:44:28 -0400479static void __exit acpi_button_exit(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 acpi_bus_unregister_driver(&acpi_button_driver);
482
Len Brown4be44fc2005-08-05 00:44:28 -0400483 if (acpi_power_dir)
Alexey Starikovskiyb34a8032005-08-03 17:55:21 -0400484 remove_proc_entry(ACPI_BUTTON_SUBCLASS_POWER, acpi_button_dir);
485 if (acpi_sleep_dir)
486 remove_proc_entry(ACPI_BUTTON_SUBCLASS_SLEEP, acpi_button_dir);
487 if (acpi_lid_dir)
488 remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
489 remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490}
491
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492module_init(acpi_button_init);
493module_exit(acpi_button_exit);