Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * acpi_ac.c - ACPI AC Adapter Driver ($Revision: 27 $) |
| 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> |
| 29 | #include <linux/types.h> |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 30 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/proc_fs.h> |
| 32 | #include <linux/seq_file.h> |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 33 | #endif |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 34 | #include <linux/power_supply.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <acpi/acpi_bus.h> |
| 36 | #include <acpi/acpi_drivers.h> |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #define ACPI_AC_COMPONENT 0x00020000 |
| 39 | #define ACPI_AC_CLASS "ac_adapter" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define ACPI_AC_DEVICE_NAME "AC Adapter" |
| 41 | #define ACPI_AC_FILE_STATE "state" |
| 42 | #define ACPI_AC_NOTIFY_STATUS 0x80 |
| 43 | #define ACPI_AC_STATUS_OFFLINE 0x00 |
| 44 | #define ACPI_AC_STATUS_ONLINE 0x01 |
| 45 | #define ACPI_AC_STATUS_UNKNOWN 0xFF |
| 46 | |
| 47 | #define _COMPONENT ACPI_AC_COMPONENT |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 48 | ACPI_MODULE_NAME("ac"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 50 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 51 | MODULE_DESCRIPTION("ACPI AC Adapter Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | MODULE_LICENSE("GPL"); |
| 53 | |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 54 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 55 | extern struct proc_dir_entry *acpi_lock_ac_dir(void); |
| 56 | extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 57 | static int acpi_ac_open_fs(struct inode *inode, struct file *file); |
| 58 | #endif |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 59 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 60 | static int acpi_ac_add(struct acpi_device *device); |
| 61 | static int acpi_ac_remove(struct acpi_device *device, int type); |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 62 | static int acpi_ac_resume(struct acpi_device *device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 64 | const static struct acpi_device_id ac_device_ids[] = { |
| 65 | {"ACPI0003", 0}, |
| 66 | {"", 0}, |
| 67 | }; |
| 68 | MODULE_DEVICE_TABLE(acpi, ac_device_ids); |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | static struct acpi_driver acpi_ac_driver = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 71 | .name = "ac", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 72 | .class = ACPI_AC_CLASS, |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 73 | .ids = ac_device_ids, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 74 | .ops = { |
| 75 | .add = acpi_ac_add, |
| 76 | .remove = acpi_ac_remove, |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 77 | .resume = acpi_ac_resume, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 78 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | }; |
| 80 | |
| 81 | struct acpi_ac { |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 82 | struct power_supply charger; |
Patrick Mochel | af96179 | 2006-05-19 16:54:32 -0400 | [diff] [blame] | 83 | struct acpi_device * device; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 84 | unsigned long state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | }; |
| 86 | |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 87 | #define to_acpi_ac(x) container_of(x, struct acpi_ac, charger); |
| 88 | |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 89 | #ifdef CONFIG_ACPI_PROCFS |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 90 | static const struct file_operations acpi_ac_fops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 91 | .open = acpi_ac_open_fs, |
| 92 | .read = seq_read, |
| 93 | .llseek = seq_lseek, |
| 94 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | }; |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 96 | #endif |
| 97 | |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 98 | static int get_ac_property(struct power_supply *psy, |
| 99 | enum power_supply_property psp, |
| 100 | union power_supply_propval *val) |
| 101 | { |
| 102 | struct acpi_ac *ac = to_acpi_ac(psy); |
| 103 | switch (psp) { |
| 104 | case POWER_SUPPLY_PROP_ONLINE: |
| 105 | val->intval = ac->state; |
| 106 | break; |
| 107 | default: |
| 108 | return -EINVAL; |
| 109 | } |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | static enum power_supply_property ac_props[] = { |
| 114 | POWER_SUPPLY_PROP_ONLINE, |
| 115 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | /* -------------------------------------------------------------------------- |
| 118 | AC Adapter Management |
| 119 | -------------------------------------------------------------------------- */ |
| 120 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 121 | static int acpi_ac_get_state(struct acpi_ac *ac) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 123 | acpi_status status = AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | if (!ac) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 127 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Patrick Mochel | a6ba5eb | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 129 | status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL, &ac->state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 131 | ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | ac->state = ACPI_AC_STATUS_UNKNOWN; |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 133 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 135 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 136 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 139 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | /* -------------------------------------------------------------------------- |
| 141 | FS Interface (/proc) |
| 142 | -------------------------------------------------------------------------- */ |
| 143 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 144 | static struct proc_dir_entry *acpi_ac_dir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | static int acpi_ac_seq_show(struct seq_file *seq, void *offset) |
| 147 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 148 | struct acpi_ac *ac = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | if (!ac) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 152 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
| 154 | if (acpi_ac_get_state(ac)) { |
| 155 | seq_puts(seq, "ERROR: Unable to read AC Adapter state\n"); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 156 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | seq_puts(seq, "state: "); |
| 160 | switch (ac->state) { |
| 161 | case ACPI_AC_STATUS_OFFLINE: |
| 162 | seq_puts(seq, "off-line\n"); |
| 163 | break; |
| 164 | case ACPI_AC_STATUS_ONLINE: |
| 165 | seq_puts(seq, "on-line\n"); |
| 166 | break; |
| 167 | default: |
| 168 | seq_puts(seq, "unknown\n"); |
| 169 | break; |
| 170 | } |
| 171 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 172 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | static int acpi_ac_open_fs(struct inode *inode, struct file *file) |
| 176 | { |
| 177 | return single_open(file, acpi_ac_seq_show, PDE(inode)->data); |
| 178 | } |
| 179 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 180 | static int acpi_ac_add_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 182 | struct proc_dir_entry *entry = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
| 185 | if (!acpi_device_dir(device)) { |
| 186 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 187 | acpi_ac_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | if (!acpi_device_dir(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 189 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 191 | } |
| 192 | |
| 193 | /* 'state' [R] */ |
| 194 | entry = create_proc_entry(ACPI_AC_FILE_STATE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 195 | S_IRUGO, acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | if (!entry) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 197 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | else { |
| 199 | entry->proc_fops = &acpi_ac_fops; |
| 200 | entry->data = acpi_driver_data(device); |
| 201 | entry->owner = THIS_MODULE; |
| 202 | } |
| 203 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 204 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | } |
| 206 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 207 | static int acpi_ac_remove_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
| 210 | if (acpi_device_dir(device)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 211 | remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
| 213 | remove_proc_entry(acpi_device_bid(device), acpi_ac_dir); |
| 214 | acpi_device_dir(device) = NULL; |
| 215 | } |
| 216 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 217 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | } |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 219 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | /* -------------------------------------------------------------------------- |
| 222 | Driver Model |
| 223 | -------------------------------------------------------------------------- */ |
| 224 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 225 | static void acpi_ac_notify(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 227 | struct acpi_ac *ac = data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 228 | struct acpi_device *device = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | if (!ac) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 232 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Patrick Mochel | af96179 | 2006-05-19 16:54:32 -0400 | [diff] [blame] | 234 | device = ac->device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | switch (event) { |
| 236 | case ACPI_AC_NOTIFY_STATUS: |
Christian Lupien | 03d7825 | 2004-08-19 01:26:00 -0400 | [diff] [blame] | 237 | case ACPI_NOTIFY_BUS_CHECK: |
| 238 | case ACPI_NOTIFY_DEVICE_CHECK: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | acpi_ac_get_state(ac); |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 240 | acpi_bus_generate_proc_event(device, event, (u32) ac->state); |
Zhang Rui | 962ce8c | 2007-08-23 01:24:31 +0800 | [diff] [blame] | 241 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
| 242 | device->dev.bus_id, event, |
| 243 | (u32) ac->state); |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 244 | kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | break; |
| 246 | default: |
| 247 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 248 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | break; |
| 250 | } |
| 251 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 252 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | } |
| 254 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 255 | static int acpi_ac_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 257 | int result = 0; |
| 258 | acpi_status status = AE_OK; |
| 259 | struct acpi_ac *ac = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 263 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 265 | ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | if (!ac) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 267 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Patrick Mochel | af96179 | 2006-05-19 16:54:32 -0400 | [diff] [blame] | 269 | ac->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME); |
| 271 | strcpy(acpi_device_class(device), ACPI_AC_CLASS); |
| 272 | acpi_driver_data(device) = ac; |
| 273 | |
| 274 | result = acpi_ac_get_state(ac); |
| 275 | if (result) |
| 276 | goto end; |
| 277 | |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 278 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | result = acpi_ac_add_fs(device); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 280 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | if (result) |
| 282 | goto end; |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 283 | ac->charger.name = acpi_device_bid(device); |
| 284 | ac->charger.type = POWER_SUPPLY_TYPE_MAINS; |
| 285 | ac->charger.properties = ac_props; |
| 286 | ac->charger.num_properties = ARRAY_SIZE(ac_props); |
| 287 | ac->charger.get_property = get_ac_property; |
| 288 | power_supply_register(&ac->device->dev, &ac->charger); |
Patrick Mochel | a6ba5eb | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 289 | status = acpi_install_notify_handler(device->handle, |
Christian Lupien | 03d7825 | 2004-08-19 01:26:00 -0400 | [diff] [blame] | 290 | ACPI_ALL_NOTIFY, acpi_ac_notify, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 291 | ac); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | result = -ENODEV; |
| 294 | goto end; |
| 295 | } |
| 296 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 297 | printk(KERN_INFO PREFIX "%s [%s] (%s)\n", |
| 298 | acpi_device_name(device), acpi_device_bid(device), |
| 299 | ac->state ? "on-line" : "off-line"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 301 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | if (result) { |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 303 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | acpi_ac_remove_fs(device); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 305 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | kfree(ac); |
| 307 | } |
| 308 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 309 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | } |
| 311 | |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 312 | static int acpi_ac_resume(struct acpi_device *device) |
| 313 | { |
| 314 | struct acpi_ac *ac; |
| 315 | unsigned old_state; |
| 316 | if (!device || !acpi_driver_data(device)) |
| 317 | return -EINVAL; |
| 318 | ac = acpi_driver_data(device); |
| 319 | old_state = ac->state; |
| 320 | if (acpi_ac_get_state(ac)) |
| 321 | return 0; |
| 322 | if (old_state != ac->state) |
| 323 | kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE); |
| 324 | return 0; |
| 325 | } |
| 326 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 327 | static int acpi_ac_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 329 | acpi_status status = AE_OK; |
| 330 | struct acpi_ac *ac = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
| 333 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 334 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 336 | ac = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Patrick Mochel | a6ba5eb | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 338 | status = acpi_remove_notify_handler(device->handle, |
Christian Lupien | 03d7825 | 2004-08-19 01:26:00 -0400 | [diff] [blame] | 339 | ACPI_ALL_NOTIFY, acpi_ac_notify); |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 340 | if (ac->charger.dev) |
| 341 | power_supply_unregister(&ac->charger); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 342 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | acpi_ac_remove_fs(device); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 344 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | kfree(ac); |
| 347 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 348 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
| 350 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 351 | static int __init acpi_ac_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 353 | int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 355 | if (acpi_disabled) |
| 356 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 358 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 359 | acpi_ac_dir = acpi_lock_ac_dir(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | if (!acpi_ac_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 361 | return -ENODEV; |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 362 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
| 364 | result = acpi_bus_register_driver(&acpi_ac_driver); |
| 365 | if (result < 0) { |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 366 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 367 | acpi_unlock_ac_dir(acpi_ac_dir); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 368 | #endif |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 369 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 372 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | } |
| 374 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 375 | static void __exit acpi_ac_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | acpi_bus_unregister_driver(&acpi_ac_driver); |
| 379 | |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 380 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 381 | acpi_unlock_ac_dir(acpi_ac_dir); |
Andrey Borzenkov | 8a246ee | 2007-11-14 17:00:37 -0800 | [diff] [blame] | 382 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 384 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | } |
| 386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | module_init(acpi_ac_init); |
| 388 | module_exit(acpi_ac_exit); |