Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 2 | * button.c - ACPI Button Driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
| 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 Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 29 | #include <linux/types.h> |
| 30 | #include <linux/proc_fs.h> |
| 31 | #include <linux/seq_file.h> |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 32 | #include <linux/input.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 33 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <acpi/acpi_bus.h> |
| 35 | #include <acpi/acpi_drivers.h> |
Andy Shevchenko | 6270da6 | 2013-03-11 09:17:04 +0000 | [diff] [blame] | 36 | #include <acpi/button.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Len Brown | a192a95 | 2009-07-28 16:45:54 -0400 | [diff] [blame] | 38 | #define PREFIX "ACPI: " |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define ACPI_BUTTON_CLASS "button" |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 41 | #define ACPI_BUTTON_FILE_INFO "info" |
| 42 | #define ACPI_BUTTON_FILE_STATE "state" |
| 43 | #define ACPI_BUTTON_TYPE_UNKNOWN 0x00 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #define ACPI_BUTTON_NOTIFY_STATUS 0x80 |
| 45 | |
| 46 | #define ACPI_BUTTON_SUBCLASS_POWER "power" |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 47 | #define ACPI_BUTTON_HID_POWER "PNP0C0C" |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 48 | #define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #define ACPI_BUTTON_TYPE_POWER 0x01 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | #define ACPI_BUTTON_SUBCLASS_SLEEP "sleep" |
| 52 | #define ACPI_BUTTON_HID_SLEEP "PNP0C0E" |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 53 | #define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #define ACPI_BUTTON_TYPE_SLEEP 0x03 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 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 Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 62 | ACPI_MODULE_NAME("button"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 64 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 65 | MODULE_DESCRIPTION("ACPI Button Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | MODULE_LICENSE("GPL"); |
| 67 | |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 68 | static 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 | }; |
| 76 | MODULE_DEVICE_TABLE(acpi, button_device_ids); |
| 77 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 78 | static int acpi_button_add(struct acpi_device *device); |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 79 | static int acpi_button_remove(struct acpi_device *device); |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 80 | static void acpi_button_notify(struct acpi_device *device, u32 event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 82 | #ifdef CONFIG_PM_SLEEP |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 83 | static int acpi_button_resume(struct device *dev); |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 84 | #endif |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 85 | static SIMPLE_DEV_PM_OPS(acpi_button_pm, NULL, acpi_button_resume); |
| 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | static struct acpi_driver acpi_button_driver = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 88 | .name = "button", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 89 | .class = ACPI_BUTTON_CLASS, |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 90 | .ids = button_device_ids, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 91 | .ops = { |
| 92 | .add = acpi_button_add, |
| 93 | .remove = acpi_button_remove, |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 94 | .notify = acpi_button_notify, |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 95 | }, |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 96 | .drv.pm = &acpi_button_pm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | }; |
| 98 | |
| 99 | struct acpi_button { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 100 | unsigned int type; |
| 101 | struct input_dev *input; |
| 102 | char phys[32]; /* for input device */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 103 | unsigned long pushed; |
Rafael J. Wysocki | c19f9a8 | 2011-02-08 23:41:13 +0100 | [diff] [blame] | 104 | bool wakeup_enabled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | }; |
| 106 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 107 | static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier); |
| 108 | static struct acpi_device *lid_device; |
| 109 | |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 110 | /* -------------------------------------------------------------------------- |
| 111 | FS Interface (/proc) |
| 112 | -------------------------------------------------------------------------- */ |
| 113 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 114 | static struct proc_dir_entry *acpi_button_dir; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 115 | static struct proc_dir_entry *acpi_lid_dir; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 116 | |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 117 | static int acpi_button_state_seq_show(struct seq_file *seq, void *offset) |
| 118 | { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 119 | struct acpi_device *device = seq->private; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 120 | acpi_status status; |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 121 | unsigned long long state; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 122 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 123 | status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 124 | seq_printf(seq, "state: %s\n", |
| 125 | ACPI_FAILURE(status) ? "unsupported" : |
| 126 | (state ? "open" : "closed")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 127 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | static int acpi_button_state_open_fs(struct inode *inode, struct file *file) |
| 131 | { |
Al Viro | d9dda78 | 2013-03-31 18:16:14 -0400 | [diff] [blame] | 132 | return single_open(file, acpi_button_state_seq_show, PDE_DATA(inode)); |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 133 | } |
| 134 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 135 | static 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 Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 142 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 143 | static int acpi_button_add_fs(struct acpi_device *device) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 144 | { |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 145 | struct acpi_button *button = acpi_driver_data(device); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | struct proc_dir_entry *entry = NULL; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 147 | int ret = 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 148 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 149 | /* 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 Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 156 | } |
| 157 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 158 | /* create /proc/acpi/button */ |
| 159 | acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); |
| 160 | if (!acpi_button_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 161 | return -ENODEV; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 162 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 163 | /* 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 Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 169 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 170 | /* 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. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 179 | S_IRUGO, acpi_device_dir(device), |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 180 | &acpi_button_state_fops, device); |
| 181 | if (!entry) { |
| 182 | ret = -ENODEV; |
| 183 | goto remove_dev_dir; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 184 | } |
| 185 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 186 | done: |
| 187 | return ret; |
| 188 | |
| 189 | remove_dev_dir: |
| 190 | remove_proc_entry(acpi_device_bid(device), |
| 191 | acpi_lid_dir); |
| 192 | acpi_device_dir(device) = NULL; |
| 193 | remove_lid_dir: |
| 194 | remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
| 195 | remove_button_dir: |
| 196 | remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); |
| 197 | goto done; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 198 | } |
| 199 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 200 | static int acpi_button_remove_fs(struct acpi_device *device) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 201 | { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 202 | struct acpi_button *button = acpi_driver_data(device); |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 203 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 204 | if (button->type != ACPI_BUTTON_TYPE_LID) |
| 205 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 206 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 207 | 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 Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 214 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 215 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 216 | } |
| 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | /* -------------------------------------------------------------------------- |
| 219 | Driver Interface |
| 220 | -------------------------------------------------------------------------- */ |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 221 | int acpi_lid_notifier_register(struct notifier_block *nb) |
| 222 | { |
| 223 | return blocking_notifier_chain_register(&acpi_lid_notifier, nb); |
| 224 | } |
| 225 | EXPORT_SYMBOL(acpi_lid_notifier_register); |
| 226 | |
| 227 | int acpi_lid_notifier_unregister(struct notifier_block *nb) |
| 228 | { |
| 229 | return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb); |
| 230 | } |
| 231 | EXPORT_SYMBOL(acpi_lid_notifier_unregister); |
| 232 | |
| 233 | int acpi_lid_open(void) |
| 234 | { |
| 235 | acpi_status status; |
| 236 | unsigned long long state; |
| 237 | |
Jesse Barnes | 2c907b7 | 2009-10-07 14:39:46 -0700 | [diff] [blame] | 238 | if (!lid_device) |
| 239 | return -ENODEV; |
| 240 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 241 | status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL, |
| 242 | &state); |
| 243 | if (ACPI_FAILURE(status)) |
| 244 | return -ENODEV; |
| 245 | |
| 246 | return !!state; |
| 247 | } |
| 248 | EXPORT_SYMBOL(acpi_lid_open); |
| 249 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 250 | static int acpi_lid_send_state(struct acpi_device *device) |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 251 | { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 252 | struct acpi_button *button = acpi_driver_data(device); |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 253 | unsigned long long state; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 254 | acpi_status status; |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 255 | int ret; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 256 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 257 | status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state); |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 258 | if (ACPI_FAILURE(status)) |
| 259 | return -ENODEV; |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 260 | |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 261 | /* input layer checks if event is redundant */ |
| 262 | input_report_switch(button->input, SW_LID, !state); |
Guillem Jover | df316e9 | 2008-10-24 00:28:33 +0300 | [diff] [blame] | 263 | input_sync(button->input); |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 264 | |
Rafael J. Wysocki | 1f83511 | 2011-01-06 23:36:01 +0100 | [diff] [blame] | 265 | if (state) |
| 266 | pm_wakeup_event(&device->dev, 0); |
| 267 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 268 | 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 Yakui | 13c199c | 2009-12-15 22:01:57 +0800 | [diff] [blame] | 272 | 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 Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 279 | return ret; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 282 | static void acpi_button_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 284 | struct acpi_button *button = acpi_driver_data(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 285 | struct input_dev *input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | switch (event) { |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 288 | case ACPI_FIXED_HARDWARE_EVENT: |
| 289 | event = ACPI_BUTTON_NOTIFY_STATUS; |
| 290 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | case ACPI_BUTTON_NOTIFY_STATUS: |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 292 | input = button->input; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 293 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 294 | acpi_lid_send_state(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 295 | } 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 Jover | df316e9 | 2008-10-24 00:28:33 +0300 | [diff] [blame] | 302 | input_sync(input); |
Rafael J. Wysocki | 1f83511 | 2011-01-06 23:36:01 +0100 | [diff] [blame] | 303 | |
| 304 | pm_wakeup_event(&device->dev, 0); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 305 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | break; |
| 307 | default: |
| 308 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 309 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | break; |
| 311 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 314 | #ifdef CONFIG_PM_SLEEP |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 315 | static int acpi_button_resume(struct device *dev) |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 316 | { |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 317 | struct acpi_device *device = to_acpi_device(dev); |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 318 | struct acpi_button *button = acpi_driver_data(device); |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 319 | |
Bjorn Helgaas | e2fb975 | 2009-04-08 15:39:43 +0000 | [diff] [blame] | 320 | if (button->type == ACPI_BUTTON_TYPE_LID) |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 321 | return acpi_lid_send_state(device); |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 322 | return 0; |
| 323 | } |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 324 | #endif |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 325 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 326 | static int acpi_button_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 328 | struct acpi_button *button; |
| 329 | struct input_dev *input; |
Thomas Renninger | 620e112 | 2010-10-01 10:54:00 +0200 | [diff] [blame] | 330 | const char *hid = acpi_device_hid(device); |
| 331 | char *name, *class; |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 332 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 334 | button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | if (!button) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 336 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 338 | device->driver_data = button; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 340 | button->input = input = input_allocate_device(); |
| 341 | if (!input) { |
| 342 | error = -ENOMEM; |
| 343 | goto err_free_button; |
| 344 | } |
| 345 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 346 | name = acpi_device_name(device); |
| 347 | class = acpi_device_class(device); |
| 348 | |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 349 | if (!strcmp(hid, ACPI_BUTTON_HID_POWER) || |
| 350 | !strcmp(hid, ACPI_BUTTON_HID_POWERF)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | button->type = ACPI_BUTTON_TYPE_POWER; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 352 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER); |
| 353 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 355 | } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) || |
| 356 | !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | button->type = ACPI_BUTTON_TYPE_SLEEP; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 358 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP); |
| 359 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 361 | } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | button->type = ACPI_BUTTON_TYPE_LID; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 363 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID); |
| 364 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 366 | } else { |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 367 | printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 368 | error = -ENODEV; |
| 369 | goto err_free_input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 372 | error = acpi_button_add_fs(device); |
| 373 | if (error) |
| 374 | goto err_free_input; |
| 375 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 376 | snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 377 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 378 | input->name = name; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 379 | input->phys = button->phys; |
| 380 | input->id.bustype = BUS_HOST; |
| 381 | input->id.product = button->type; |
Andrey Borzenkov | 3b34e52 | 2008-03-04 15:06:35 -0800 | [diff] [blame] | 382 | input->dev.parent = &device->dev; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | switch (button->type) { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 385 | case ACPI_BUTTON_TYPE_POWER: |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 386 | input->evbit[0] = BIT_MASK(EV_KEY); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 387 | set_bit(KEY_POWER, input->keybit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | break; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 389 | |
| 390 | case ACPI_BUTTON_TYPE_SLEEP: |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 391 | input->evbit[0] = BIT_MASK(EV_KEY); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 392 | set_bit(KEY_SLEEP, input->keybit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | break; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 394 | |
| 395 | case ACPI_BUTTON_TYPE_LID: |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 396 | input->evbit[0] = BIT_MASK(EV_SW); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 397 | set_bit(SW_LID, input->swbit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | break; |
| 399 | } |
| 400 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 401 | error = input_register_device(input); |
| 402 | if (error) |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 403 | goto err_remove_fs; |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 404 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 405 | acpi_lid_send_state(device); |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 406 | /* |
| 407 | * This assumes there's only one lid device, or if there are |
| 408 | * more we only care about the last one... |
| 409 | */ |
| 410 | lid_device = device; |
| 411 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
| 413 | if (device->wakeup.flags.valid) { |
| 414 | /* Button's GPE is run-wake GPE */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 415 | acpi_enable_gpe(device->wakeup.gpe_device, |
Rafael J. Wysocki | a44061a | 2010-07-01 10:11:45 +0800 | [diff] [blame] | 416 | device->wakeup.gpe_number); |
Rafael J. Wysocki | c19f9a8 | 2011-02-08 23:41:13 +0100 | [diff] [blame] | 417 | if (!device_may_wakeup(&device->dev)) { |
| 418 | device_set_wakeup_enable(&device->dev, true); |
| 419 | button->wakeup_enabled = true; |
| 420 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 423 | printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device)); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 424 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 426 | err_remove_fs: |
| 427 | acpi_button_remove_fs(device); |
| 428 | err_free_input: |
| 429 | input_free_device(input); |
| 430 | err_free_button: |
| 431 | kfree(button); |
| 432 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | } |
| 434 | |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 435 | static int acpi_button_remove(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | { |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 437 | struct acpi_button *button = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
Rafael J. Wysocki | 9630bdd | 2010-02-17 23:41:07 +0100 | [diff] [blame] | 439 | if (device->wakeup.flags.valid) { |
| 440 | acpi_disable_gpe(device->wakeup.gpe_device, |
Rafael J. Wysocki | a44061a | 2010-07-01 10:11:45 +0800 | [diff] [blame] | 441 | device->wakeup.gpe_number); |
Rafael J. Wysocki | c19f9a8 | 2011-02-08 23:41:13 +0100 | [diff] [blame] | 442 | if (button->wakeup_enabled) |
| 443 | device_set_wakeup_enable(&device->dev, false); |
Rafael J. Wysocki | 9630bdd | 2010-02-17 23:41:07 +0100 | [diff] [blame] | 444 | } |
| 445 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 446 | acpi_button_remove_fs(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 447 | input_unregister_device(button->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | kfree(button); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 449 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | } |
| 451 | |
Mika Westerberg | 466e78f | 2012-09-07 10:31:39 +0300 | [diff] [blame] | 452 | module_acpi_driver(acpi_button_driver); |