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> |
| 36 | |
Len Brown | a192a95 | 2009-07-28 16:45:54 -0400 | [diff] [blame] | 37 | #define PREFIX "ACPI: " |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #define ACPI_BUTTON_CLASS "button" |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 40 | #define ACPI_BUTTON_FILE_INFO "info" |
| 41 | #define ACPI_BUTTON_FILE_STATE "state" |
| 42 | #define ACPI_BUTTON_TYPE_UNKNOWN 0x00 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #define ACPI_BUTTON_NOTIFY_STATUS 0x80 |
| 44 | |
| 45 | #define ACPI_BUTTON_SUBCLASS_POWER "power" |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 46 | #define ACPI_BUTTON_HID_POWER "PNP0C0C" |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 47 | #define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #define ACPI_BUTTON_TYPE_POWER 0x01 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #define ACPI_BUTTON_SUBCLASS_SLEEP "sleep" |
| 51 | #define ACPI_BUTTON_HID_SLEEP "PNP0C0E" |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 52 | #define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #define ACPI_BUTTON_TYPE_SLEEP 0x03 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | #define ACPI_BUTTON_SUBCLASS_LID "lid" |
| 56 | #define ACPI_BUTTON_HID_LID "PNP0C0D" |
| 57 | #define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch" |
| 58 | #define ACPI_BUTTON_TYPE_LID 0x05 |
| 59 | |
| 60 | #define _COMPONENT ACPI_BUTTON_COMPONENT |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 61 | ACPI_MODULE_NAME("button"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 63 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 64 | MODULE_DESCRIPTION("ACPI Button Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | MODULE_LICENSE("GPL"); |
| 66 | |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 67 | static const struct acpi_device_id button_device_ids[] = { |
| 68 | {ACPI_BUTTON_HID_LID, 0}, |
| 69 | {ACPI_BUTTON_HID_SLEEP, 0}, |
| 70 | {ACPI_BUTTON_HID_SLEEPF, 0}, |
| 71 | {ACPI_BUTTON_HID_POWER, 0}, |
| 72 | {ACPI_BUTTON_HID_POWERF, 0}, |
| 73 | {"", 0}, |
| 74 | }; |
| 75 | MODULE_DEVICE_TABLE(acpi, button_device_ids); |
| 76 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 77 | static int acpi_button_add(struct acpi_device *device); |
| 78 | static int acpi_button_remove(struct acpi_device *device, int type); |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 79 | static void acpi_button_notify(struct acpi_device *device, u32 event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 81 | static int acpi_button_resume(struct device *dev); |
| 82 | static SIMPLE_DEV_PM_OPS(acpi_button_pm, NULL, acpi_button_resume); |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | static struct acpi_driver acpi_button_driver = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 85 | .name = "button", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 86 | .class = ACPI_BUTTON_CLASS, |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 87 | .ids = button_device_ids, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 88 | .ops = { |
| 89 | .add = acpi_button_add, |
| 90 | .remove = acpi_button_remove, |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 91 | .notify = acpi_button_notify, |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 92 | }, |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 93 | .drv.pm = &acpi_button_pm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | struct acpi_button { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 97 | unsigned int type; |
| 98 | struct input_dev *input; |
| 99 | char phys[32]; /* for input device */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 100 | unsigned long pushed; |
Rafael J. Wysocki | c19f9a8 | 2011-02-08 23:41:13 +0100 | [diff] [blame] | 101 | bool wakeup_enabled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | }; |
| 103 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 104 | static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier); |
| 105 | static struct acpi_device *lid_device; |
| 106 | |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 107 | /* -------------------------------------------------------------------------- |
| 108 | FS Interface (/proc) |
| 109 | -------------------------------------------------------------------------- */ |
| 110 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 111 | static struct proc_dir_entry *acpi_button_dir; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 112 | static struct proc_dir_entry *acpi_lid_dir; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 113 | |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 114 | static int acpi_button_state_seq_show(struct seq_file *seq, void *offset) |
| 115 | { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 116 | struct acpi_device *device = seq->private; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 117 | acpi_status status; |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 118 | unsigned long long state; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 119 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 120 | status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 121 | seq_printf(seq, "state: %s\n", |
| 122 | ACPI_FAILURE(status) ? "unsupported" : |
| 123 | (state ? "open" : "closed")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 124 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | static int acpi_button_state_open_fs(struct inode *inode, struct file *file) |
| 128 | { |
| 129 | return single_open(file, acpi_button_state_seq_show, PDE(inode)->data); |
| 130 | } |
| 131 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 132 | static const struct file_operations acpi_button_state_fops = { |
| 133 | .owner = THIS_MODULE, |
| 134 | .open = acpi_button_state_open_fs, |
| 135 | .read = seq_read, |
| 136 | .llseek = seq_lseek, |
| 137 | .release = single_release, |
| 138 | }; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 139 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 140 | static int acpi_button_add_fs(struct acpi_device *device) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 141 | { |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 142 | struct acpi_button *button = acpi_driver_data(device); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 143 | struct proc_dir_entry *entry = NULL; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 144 | int ret = 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 145 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 146 | /* procfs I/F for ACPI lid device only */ |
| 147 | if (button->type != ACPI_BUTTON_TYPE_LID) |
| 148 | return 0; |
| 149 | |
| 150 | if (acpi_button_dir || acpi_lid_dir) { |
| 151 | printk(KERN_ERR PREFIX "More than one Lid device found!\n"); |
| 152 | return -EEXIST; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 153 | } |
| 154 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 155 | /* create /proc/acpi/button */ |
| 156 | acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); |
| 157 | if (!acpi_button_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 158 | return -ENODEV; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 159 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 160 | /* create /proc/acpi/button/lid */ |
| 161 | acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
| 162 | if (!acpi_lid_dir) { |
| 163 | ret = -ENODEV; |
| 164 | goto remove_button_dir; |
| 165 | } |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 166 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 167 | /* create /proc/acpi/button/lid/LID/ */ |
| 168 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_lid_dir); |
| 169 | if (!acpi_device_dir(device)) { |
| 170 | ret = -ENODEV; |
| 171 | goto remove_lid_dir; |
| 172 | } |
| 173 | |
| 174 | /* create /proc/acpi/button/lid/LID/state */ |
| 175 | entry = proc_create_data(ACPI_BUTTON_FILE_STATE, |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 176 | S_IRUGO, acpi_device_dir(device), |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 177 | &acpi_button_state_fops, device); |
| 178 | if (!entry) { |
| 179 | ret = -ENODEV; |
| 180 | goto remove_dev_dir; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 181 | } |
| 182 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 183 | done: |
| 184 | return ret; |
| 185 | |
| 186 | remove_dev_dir: |
| 187 | remove_proc_entry(acpi_device_bid(device), |
| 188 | acpi_lid_dir); |
| 189 | acpi_device_dir(device) = NULL; |
| 190 | remove_lid_dir: |
| 191 | remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
| 192 | remove_button_dir: |
| 193 | remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); |
| 194 | goto done; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 195 | } |
| 196 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 197 | static int acpi_button_remove_fs(struct acpi_device *device) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 198 | { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 199 | struct acpi_button *button = acpi_driver_data(device); |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 200 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 201 | if (button->type != ACPI_BUTTON_TYPE_LID) |
| 202 | return 0; |
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 | remove_proc_entry(ACPI_BUTTON_FILE_STATE, |
| 205 | acpi_device_dir(device)); |
| 206 | remove_proc_entry(acpi_device_bid(device), |
| 207 | acpi_lid_dir); |
| 208 | acpi_device_dir(device) = NULL; |
| 209 | remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
| 210 | remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 211 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 212 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 213 | } |
| 214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | /* -------------------------------------------------------------------------- |
| 216 | Driver Interface |
| 217 | -------------------------------------------------------------------------- */ |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 218 | int acpi_lid_notifier_register(struct notifier_block *nb) |
| 219 | { |
| 220 | return blocking_notifier_chain_register(&acpi_lid_notifier, nb); |
| 221 | } |
| 222 | EXPORT_SYMBOL(acpi_lid_notifier_register); |
| 223 | |
| 224 | int acpi_lid_notifier_unregister(struct notifier_block *nb) |
| 225 | { |
| 226 | return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb); |
| 227 | } |
| 228 | EXPORT_SYMBOL(acpi_lid_notifier_unregister); |
| 229 | |
| 230 | int acpi_lid_open(void) |
| 231 | { |
| 232 | acpi_status status; |
| 233 | unsigned long long state; |
| 234 | |
Jesse Barnes | 2c907b7 | 2009-10-07 14:39:46 -0700 | [diff] [blame] | 235 | if (!lid_device) |
| 236 | return -ENODEV; |
| 237 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 238 | status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL, |
| 239 | &state); |
| 240 | if (ACPI_FAILURE(status)) |
| 241 | return -ENODEV; |
| 242 | |
| 243 | return !!state; |
| 244 | } |
| 245 | EXPORT_SYMBOL(acpi_lid_open); |
| 246 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 247 | static int acpi_lid_send_state(struct acpi_device *device) |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 248 | { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 249 | struct acpi_button *button = acpi_driver_data(device); |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 250 | unsigned long long state; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 251 | acpi_status status; |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 252 | int ret; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 253 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 254 | status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state); |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 255 | if (ACPI_FAILURE(status)) |
| 256 | return -ENODEV; |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 257 | |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 258 | /* input layer checks if event is redundant */ |
| 259 | input_report_switch(button->input, SW_LID, !state); |
Guillem Jover | df316e9 | 2008-10-24 00:28:33 +0300 | [diff] [blame] | 260 | input_sync(button->input); |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 261 | |
Rafael J. Wysocki | 1f83511 | 2011-01-06 23:36:01 +0100 | [diff] [blame] | 262 | if (state) |
| 263 | pm_wakeup_event(&device->dev, 0); |
| 264 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 265 | ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device); |
| 266 | if (ret == NOTIFY_DONE) |
| 267 | ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, |
| 268 | device); |
Zhao Yakui | 13c199c | 2009-12-15 22:01:57 +0800 | [diff] [blame] | 269 | if (ret == NOTIFY_DONE || ret == NOTIFY_OK) { |
| 270 | /* |
| 271 | * It is also regarded as success if the notifier_chain |
| 272 | * returns NOTIFY_OK or NOTIFY_DONE. |
| 273 | */ |
| 274 | ret = 0; |
| 275 | } |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 276 | return ret; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 277 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 279 | static void acpi_button_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | { |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 281 | struct acpi_button *button = acpi_driver_data(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 282 | struct input_dev *input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | switch (event) { |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 285 | case ACPI_FIXED_HARDWARE_EVENT: |
| 286 | event = ACPI_BUTTON_NOTIFY_STATUS; |
| 287 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | case ACPI_BUTTON_NOTIFY_STATUS: |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 289 | input = button->input; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 290 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 291 | acpi_lid_send_state(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 292 | } else { |
| 293 | int keycode = test_bit(KEY_SLEEP, input->keybit) ? |
| 294 | KEY_SLEEP : KEY_POWER; |
| 295 | |
| 296 | input_report_key(input, keycode, 1); |
| 297 | input_sync(input); |
| 298 | input_report_key(input, keycode, 0); |
Guillem Jover | df316e9 | 2008-10-24 00:28:33 +0300 | [diff] [blame] | 299 | input_sync(input); |
Rafael J. Wysocki | 1f83511 | 2011-01-06 23:36:01 +0100 | [diff] [blame] | 300 | |
| 301 | pm_wakeup_event(&device->dev, 0); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 302 | } |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 303 | |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 304 | acpi_bus_generate_proc_event(device, event, ++button->pushed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | break; |
| 306 | default: |
| 307 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 308 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | break; |
| 310 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | } |
| 312 | |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 313 | static int acpi_button_resume(struct device *dev) |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 314 | { |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 315 | struct acpi_device *device = to_acpi_device(dev); |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 316 | struct acpi_button *button = acpi_driver_data(device); |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 317 | |
Bjorn Helgaas | e2fb975 | 2009-04-08 15:39:43 +0000 | [diff] [blame] | 318 | if (button->type == ACPI_BUTTON_TYPE_LID) |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 319 | return acpi_lid_send_state(device); |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 320 | return 0; |
| 321 | } |
| 322 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 323 | static int acpi_button_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 325 | struct acpi_button *button; |
| 326 | struct input_dev *input; |
Thomas Renninger | 620e112 | 2010-10-01 10:54:00 +0200 | [diff] [blame] | 327 | const char *hid = acpi_device_hid(device); |
| 328 | char *name, *class; |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 329 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 331 | button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | if (!button) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 333 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 335 | device->driver_data = button; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 337 | button->input = input = input_allocate_device(); |
| 338 | if (!input) { |
| 339 | error = -ENOMEM; |
| 340 | goto err_free_button; |
| 341 | } |
| 342 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 343 | name = acpi_device_name(device); |
| 344 | class = acpi_device_class(device); |
| 345 | |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 346 | if (!strcmp(hid, ACPI_BUTTON_HID_POWER) || |
| 347 | !strcmp(hid, ACPI_BUTTON_HID_POWERF)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | button->type = ACPI_BUTTON_TYPE_POWER; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 349 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER); |
| 350 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 352 | } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) || |
| 353 | !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | button->type = ACPI_BUTTON_TYPE_SLEEP; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 355 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP); |
| 356 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 358 | } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | button->type = ACPI_BUTTON_TYPE_LID; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 360 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID); |
| 361 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 363 | } else { |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 364 | printk(KERN_ERR PREFIX "Unsupported hid [%s]\n", hid); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 365 | error = -ENODEV; |
| 366 | goto err_free_input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } |
| 368 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 369 | error = acpi_button_add_fs(device); |
| 370 | if (error) |
| 371 | goto err_free_input; |
| 372 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 373 | snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 374 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 375 | input->name = name; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 376 | input->phys = button->phys; |
| 377 | input->id.bustype = BUS_HOST; |
| 378 | input->id.product = button->type; |
Andrey Borzenkov | 3b34e52 | 2008-03-04 15:06:35 -0800 | [diff] [blame] | 379 | input->dev.parent = &device->dev; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | switch (button->type) { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 382 | case ACPI_BUTTON_TYPE_POWER: |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 383 | input->evbit[0] = BIT_MASK(EV_KEY); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 384 | set_bit(KEY_POWER, input->keybit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | break; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 386 | |
| 387 | case ACPI_BUTTON_TYPE_SLEEP: |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 388 | input->evbit[0] = BIT_MASK(EV_KEY); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 389 | set_bit(KEY_SLEEP, input->keybit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | break; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 391 | |
| 392 | case ACPI_BUTTON_TYPE_LID: |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 393 | input->evbit[0] = BIT_MASK(EV_SW); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 394 | set_bit(SW_LID, input->swbit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | break; |
| 396 | } |
| 397 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 398 | error = input_register_device(input); |
| 399 | if (error) |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 400 | goto err_remove_fs; |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 401 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 402 | acpi_lid_send_state(device); |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 403 | /* |
| 404 | * This assumes there's only one lid device, or if there are |
| 405 | * more we only care about the last one... |
| 406 | */ |
| 407 | lid_device = device; |
| 408 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | if (device->wakeup.flags.valid) { |
| 411 | /* Button's GPE is run-wake GPE */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 412 | acpi_enable_gpe(device->wakeup.gpe_device, |
Rafael J. Wysocki | a44061a | 2010-07-01 10:11:45 +0800 | [diff] [blame] | 413 | device->wakeup.gpe_number); |
Rafael J. Wysocki | c19f9a8 | 2011-02-08 23:41:13 +0100 | [diff] [blame] | 414 | if (!device_may_wakeup(&device->dev)) { |
| 415 | device_set_wakeup_enable(&device->dev, true); |
| 416 | button->wakeup_enabled = true; |
| 417 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | } |
| 419 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 420 | printk(KERN_INFO PREFIX "%s [%s]\n", name, acpi_device_bid(device)); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 421 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 423 | err_remove_fs: |
| 424 | acpi_button_remove_fs(device); |
| 425 | err_free_input: |
| 426 | input_free_device(input); |
| 427 | err_free_button: |
| 428 | kfree(button); |
| 429 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 432 | static int acpi_button_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | { |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 434 | struct acpi_button *button = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Rafael J. Wysocki | 9630bdd | 2010-02-17 23:41:07 +0100 | [diff] [blame] | 436 | if (device->wakeup.flags.valid) { |
| 437 | acpi_disable_gpe(device->wakeup.gpe_device, |
Rafael J. Wysocki | a44061a | 2010-07-01 10:11:45 +0800 | [diff] [blame] | 438 | device->wakeup.gpe_number); |
Rafael J. Wysocki | c19f9a8 | 2011-02-08 23:41:13 +0100 | [diff] [blame] | 439 | if (button->wakeup_enabled) |
| 440 | device_set_wakeup_enable(&device->dev, false); |
Rafael J. Wysocki | 9630bdd | 2010-02-17 23:41:07 +0100 | [diff] [blame] | 441 | } |
| 442 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 443 | acpi_button_remove_fs(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 444 | input_unregister_device(button->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | kfree(button); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 446 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | } |
| 448 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 449 | static int __init acpi_button_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | { |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 451 | return acpi_bus_register_driver(&acpi_button_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | } |
| 453 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 454 | static void __exit acpi_button_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | acpi_bus_unregister_driver(&acpi_button_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
| 458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | module_init(acpi_button_init); |
| 460 | module_exit(acpi_button_exit); |