Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * acpi_battery.c - ACPI Battery Driver ($Revision: 37 $) |
| 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> |
| 30 | #include <linux/proc_fs.h> |
| 31 | #include <linux/seq_file.h> |
| 32 | #include <asm/uaccess.h> |
| 33 | |
| 34 | #include <acpi/acpi_bus.h> |
| 35 | #include <acpi/acpi_drivers.h> |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
| 38 | |
| 39 | #define ACPI_BATTERY_FORMAT_BIF "NNNNNNNNNSSSS" |
| 40 | #define ACPI_BATTERY_FORMAT_BST "NNNN" |
| 41 | |
| 42 | #define ACPI_BATTERY_COMPONENT 0x00040000 |
| 43 | #define ACPI_BATTERY_CLASS "battery" |
| 44 | #define ACPI_BATTERY_HID "PNP0C0A" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
| 46 | #define ACPI_BATTERY_FILE_INFO "info" |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 47 | #define ACPI_BATTERY_FILE_STATE "state" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #define ACPI_BATTERY_FILE_ALARM "alarm" |
| 49 | #define ACPI_BATTERY_NOTIFY_STATUS 0x80 |
| 50 | #define ACPI_BATTERY_NOTIFY_INFO 0x81 |
| 51 | #define ACPI_BATTERY_UNITS_WATTS "mW" |
| 52 | #define ACPI_BATTERY_UNITS_AMPS "mA" |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 55 | |
| 56 | #define ACPI_BATTERY_UPDATE_TIME 0 |
| 57 | |
| 58 | #define ACPI_BATTERY_NONE_UPDATE 0 |
| 59 | #define ACPI_BATTERY_EASY_UPDATE 1 |
| 60 | #define ACPI_BATTERY_INIT_UPDATE 2 |
| 61 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 62 | ACPI_MODULE_NAME("battery"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 64 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 65 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | MODULE_LICENSE("GPL"); |
| 67 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 68 | static unsigned int update_time = ACPI_BATTERY_UPDATE_TIME; |
| 69 | |
| 70 | /* 0 - every time, > 0 - by update_time */ |
| 71 | module_param(update_time, uint, 0644); |
| 72 | |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 73 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
| 74 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); |
| 75 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | static int acpi_battery_add(struct acpi_device *device); |
| 77 | static int acpi_battery_remove(struct acpi_device *device, int type); |
Patrick Mochel | 5d9464a | 2006-12-07 20:56:27 +0800 | [diff] [blame] | 78 | static int acpi_battery_resume(struct acpi_device *device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | static struct acpi_driver acpi_battery_driver = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 81 | .name = "battery", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 82 | .class = ACPI_BATTERY_CLASS, |
| 83 | .ids = ACPI_BATTERY_HID, |
| 84 | .ops = { |
| 85 | .add = acpi_battery_add, |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 86 | .resume = acpi_battery_resume, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 87 | .remove = acpi_battery_remove, |
| 88 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | }; |
| 90 | |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 91 | struct acpi_battery_state { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 92 | acpi_integer state; |
| 93 | acpi_integer present_rate; |
| 94 | acpi_integer remaining_capacity; |
| 95 | acpi_integer present_voltage; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | }; |
| 97 | |
| 98 | struct acpi_battery_info { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 99 | acpi_integer power_unit; |
| 100 | acpi_integer design_capacity; |
| 101 | acpi_integer last_full_capacity; |
| 102 | acpi_integer battery_technology; |
| 103 | acpi_integer design_voltage; |
| 104 | acpi_integer design_capacity_warning; |
| 105 | acpi_integer design_capacity_low; |
| 106 | acpi_integer battery_capacity_granularity_1; |
| 107 | acpi_integer battery_capacity_granularity_2; |
| 108 | acpi_string model_number; |
| 109 | acpi_string serial_number; |
| 110 | acpi_string battery_type; |
| 111 | acpi_string oem_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | }; |
| 113 | |
| 114 | struct acpi_battery_flags { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 115 | u8 battery_present_prev; |
| 116 | u8 alarm_present; |
| 117 | u8 init_update; |
| 118 | u8 info_update; |
| 119 | u8 state_update; |
| 120 | u8 alarm_update; |
| 121 | u8 power_unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | }; |
| 123 | |
| 124 | struct acpi_battery { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 125 | struct mutex mutex; |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 126 | struct acpi_device * device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | struct acpi_battery_flags flags; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 128 | struct acpi_buffer bif_data; |
| 129 | struct acpi_buffer bst_data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 130 | unsigned long alarm; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 131 | unsigned long info_update_time; |
| 132 | unsigned long state_update_time; |
| 133 | unsigned long alarm_update_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | }; |
| 135 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 136 | #define acpi_battery_present(battery) battery->device->status.battery_present |
| 137 | #define acpi_battery_present_prev(battery) battery->flags.battery_present_prev |
| 138 | #define acpi_battery_alarm_present(battery) battery->flags.alarm_present |
| 139 | #define acpi_battery_init_update_flag(battery) battery->flags.init_update |
| 140 | #define acpi_battery_info_update_flag(battery) battery->flags.info_update |
| 141 | #define acpi_battery_state_update_flag(battery) battery->flags.state_update |
| 142 | #define acpi_battery_alarm_update_flag(battery) battery->flags.alarm_update |
| 143 | #define acpi_battery_power_units(battery) battery->flags.power_unit ? \ |
| 144 | ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS |
| 145 | #define acpi_battery_handle(battery) battery->device->handle |
| 146 | #define acpi_battery_inserted(battery) (!acpi_battery_present_prev(battery) & acpi_battery_present(battery)) |
| 147 | #define acpi_battery_removed(battery) (acpi_battery_present_prev(battery) & !acpi_battery_present(battery)) |
| 148 | #define acpi_battery_bid(battery) acpi_device_bid(battery->device) |
| 149 | #define acpi_battery_status_str(battery) acpi_battery_present(battery) ? "present" : "absent" |
| 150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | /* -------------------------------------------------------------------------- |
| 152 | Battery Management |
| 153 | -------------------------------------------------------------------------- */ |
| 154 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 155 | static void acpi_battery_mutex_lock(struct acpi_battery *battery) |
| 156 | { |
| 157 | mutex_lock(&battery->mutex); |
| 158 | } |
| 159 | |
| 160 | static void acpi_battery_mutex_unlock(struct acpi_battery *battery) |
| 161 | { |
| 162 | mutex_unlock(&battery->mutex); |
| 163 | } |
| 164 | |
| 165 | static void acpi_battery_check_result(struct acpi_battery *battery, int result) |
| 166 | { |
| 167 | if (!battery) |
| 168 | return; |
| 169 | |
| 170 | if (result) { |
| 171 | acpi_battery_init_update_flag(battery) = 1; |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | static int acpi_battery_extract_package(struct acpi_battery *battery, |
| 176 | union acpi_object *package, |
| 177 | struct acpi_buffer *format, |
| 178 | struct acpi_buffer *data, |
| 179 | char *package_name) |
| 180 | { |
| 181 | acpi_status status = AE_OK; |
| 182 | struct acpi_buffer data_null = { 0, NULL }; |
| 183 | |
| 184 | status = acpi_extract_package(package, format, &data_null); |
| 185 | if (status != AE_BUFFER_OVERFLOW) { |
| 186 | ACPI_EXCEPTION((AE_INFO, status, "Extracting size %s", |
| 187 | package_name)); |
| 188 | return -ENODEV; |
| 189 | } |
| 190 | |
| 191 | if (data_null.length != data->length) { |
| 192 | if (data->pointer) { |
| 193 | kfree(data->pointer); |
| 194 | } |
| 195 | data->pointer = kzalloc(data_null.length, GFP_KERNEL); |
| 196 | if (!data->pointer) { |
| 197 | ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "kzalloc()")); |
| 198 | return -ENOMEM; |
| 199 | } |
| 200 | data->length = data_null.length; |
| 201 | } |
| 202 | |
| 203 | status = acpi_extract_package(package, format, data); |
| 204 | if (ACPI_FAILURE(status)) { |
| 205 | ACPI_EXCEPTION((AE_INFO, status, "Extracting %s", |
| 206 | package_name)); |
| 207 | return -ENODEV; |
| 208 | } |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | static int acpi_battery_get_status(struct acpi_battery *battery) |
| 214 | { |
| 215 | int result = 0; |
| 216 | |
| 217 | result = acpi_bus_get_status(battery->device); |
| 218 | if (result) { |
| 219 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
| 220 | return -ENODEV; |
| 221 | } |
| 222 | return result; |
| 223 | } |
| 224 | |
| 225 | static int acpi_battery_get_info(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 227 | int result = 0; |
| 228 | acpi_status status = 0; |
| 229 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 230 | struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BIF), |
| 231 | ACPI_BATTERY_FORMAT_BIF |
| 232 | }; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 233 | union acpi_object *package = NULL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 234 | struct acpi_buffer *data = NULL; |
| 235 | struct acpi_battery_info *bif = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 237 | battery->info_update_time = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 239 | if (!acpi_battery_present(battery)) |
| 240 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
| 242 | /* Evalute _BIF */ |
| 243 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 244 | status = acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 246 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 247 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 250 | package = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 252 | data = &battery->bif_data; |
| 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | /* Extract Package Data */ |
| 255 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 256 | result = acpi_battery_extract_package(battery, package, &format, data, "_BIF"); |
| 257 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 260 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 262 | if (buffer.pointer) { |
| 263 | kfree(buffer.pointer); |
| 264 | } |
| 265 | |
| 266 | if (!result) { |
| 267 | bif = data->pointer; |
| 268 | battery->flags.power_unit = bif->power_unit; |
| 269 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 271 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
| 273 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 274 | static int acpi_battery_get_state(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 276 | int result = 0; |
| 277 | acpi_status status = 0; |
| 278 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 279 | struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BST), |
| 280 | ACPI_BATTERY_FORMAT_BST |
| 281 | }; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 282 | union acpi_object *package = NULL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 283 | struct acpi_buffer *data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 285 | battery->state_update_time = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 287 | if (!acpi_battery_present(battery)) |
| 288 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
| 290 | /* Evalute _BST */ |
| 291 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 292 | status = acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL, &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 294 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 295 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | } |
| 297 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 298 | package = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 300 | data = &battery->bst_data; |
| 301 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | /* Extract Package Data */ |
| 303 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 304 | result = acpi_battery_extract_package(battery, package, &format, data, "_BST"); |
| 305 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 308 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 309 | if (buffer.pointer) { |
| 310 | kfree(buffer.pointer); |
| 311 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 313 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 316 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
| 317 | { |
| 318 | battery->alarm_update_time = get_seconds(); |
| 319 | |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | static int acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 325 | acpi_status status = 0; |
| 326 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 327 | struct acpi_object_list arg_list = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 329 | battery->alarm_update_time = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 331 | if (!acpi_battery_present(battery)) |
| 332 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 334 | if (!acpi_battery_alarm_present(battery)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 335 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | arg0.integer.value = alarm; |
| 338 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 339 | status = acpi_evaluate_object(acpi_battery_handle(battery), "_BTP", &arg_list, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 341 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", (u32) alarm)); |
| 344 | |
| 345 | battery->alarm = alarm; |
| 346 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 347 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
| 349 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 350 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 352 | int result = 0; |
| 353 | acpi_status status = AE_OK; |
| 354 | acpi_handle handle = NULL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 355 | struct acpi_battery_info *bif = battery->bif_data.pointer; |
| 356 | unsigned long alarm = battery->alarm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 358 | /* See if alarms are supported, and if so, set default */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 359 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 360 | status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle); |
| 361 | if (ACPI_SUCCESS(status)) { |
| 362 | acpi_battery_alarm_present(battery) = 1; |
| 363 | if (!alarm && bif) { |
| 364 | alarm = bif->design_capacity_warning; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 366 | result = acpi_battery_set_alarm(battery, alarm); |
| 367 | if (result) |
| 368 | goto end; |
| 369 | } else { |
| 370 | acpi_battery_alarm_present(battery) = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | } |
| 372 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 373 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 375 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
| 377 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 378 | static int acpi_battery_init_update(struct acpi_battery *battery) |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 379 | { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 380 | int result = 0; |
| 381 | |
| 382 | result = acpi_battery_get_status(battery); |
| 383 | if (result) |
| 384 | return result; |
| 385 | |
| 386 | acpi_battery_present_prev(battery) = acpi_battery_present(battery); |
| 387 | |
| 388 | if (acpi_battery_present(battery)) { |
| 389 | result = acpi_battery_get_info(battery); |
| 390 | if (result) |
| 391 | return result; |
| 392 | result = acpi_battery_get_state(battery); |
| 393 | if (result) |
| 394 | return result; |
| 395 | |
| 396 | acpi_battery_init_alarm(battery); |
| 397 | } |
| 398 | |
| 399 | return result; |
| 400 | } |
| 401 | |
| 402 | static int acpi_battery_update(struct acpi_battery *battery, |
| 403 | int update, int *update_result_ptr) |
| 404 | { |
| 405 | int result = 0; |
| 406 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
| 407 | |
| 408 | if (!acpi_battery_present(battery)) { |
| 409 | update = 1; |
| 410 | } |
| 411 | |
| 412 | if (acpi_battery_init_update_flag(battery)) { |
| 413 | result = acpi_battery_init_update(battery); |
| 414 | if (result) |
| 415 | goto end;; |
| 416 | update_result = ACPI_BATTERY_INIT_UPDATE; |
| 417 | } else if (update) { |
| 418 | result = acpi_battery_get_status(battery); |
| 419 | if (result) |
| 420 | goto end;; |
| 421 | if (acpi_battery_inserted(battery) || acpi_battery_removed(battery)) { |
| 422 | result = acpi_battery_init_update(battery); |
| 423 | if (result) |
| 424 | goto end;; |
| 425 | update_result = ACPI_BATTERY_INIT_UPDATE; |
| 426 | } else { |
| 427 | update_result = ACPI_BATTERY_EASY_UPDATE; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | end: |
| 432 | |
| 433 | acpi_battery_init_update_flag(battery) = (result != 0); |
| 434 | |
| 435 | *update_result_ptr = update_result; |
| 436 | |
| 437 | return result; |
| 438 | } |
| 439 | |
| 440 | static void acpi_battery_notify_update(struct acpi_battery *battery) |
| 441 | { |
| 442 | acpi_battery_get_status(battery); |
| 443 | |
| 444 | if (acpi_battery_init_update_flag(battery)) { |
| 445 | return; |
| 446 | } |
| 447 | |
| 448 | if (acpi_battery_inserted(battery) || acpi_battery_removed(battery)) { |
| 449 | acpi_battery_init_update_flag(battery) = 1; |
| 450 | } else { |
| 451 | acpi_battery_info_update_flag(battery) = 1; |
| 452 | acpi_battery_state_update_flag(battery) = 1; |
| 453 | acpi_battery_alarm_update_flag(battery) = 1; |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 454 | } |
| 455 | } |
| 456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | /* -------------------------------------------------------------------------- |
| 458 | FS Interface (/proc) |
| 459 | -------------------------------------------------------------------------- */ |
| 460 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 461 | static struct proc_dir_entry *acpi_battery_dir; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 462 | |
| 463 | static int acpi_battery_read_info_print(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 465 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | struct acpi_battery_info *bif = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 467 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 469 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | goto end; |
| 471 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 472 | if (acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | seq_printf(seq, "present: yes\n"); |
| 474 | else { |
| 475 | seq_printf(seq, "present: no\n"); |
| 476 | goto end; |
| 477 | } |
| 478 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 479 | bif = battery->bif_data.pointer; |
| 480 | if (!bif) { |
| 481 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BIF buffer is NULL")); |
| 482 | result = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | goto end; |
| 484 | } |
| 485 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 486 | /* Battery Units */ |
| 487 | |
| 488 | units = acpi_battery_power_units(battery); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | if (bif->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 491 | seq_printf(seq, "design capacity: unknown\n"); |
| 492 | else |
| 493 | seq_printf(seq, "design capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 494 | (u32) bif->design_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | if (bif->last_full_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 497 | seq_printf(seq, "last full capacity: unknown\n"); |
| 498 | else |
| 499 | seq_printf(seq, "last full capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 500 | (u32) bif->last_full_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | |
| 502 | switch ((u32) bif->battery_technology) { |
| 503 | case 0: |
| 504 | seq_printf(seq, "battery technology: non-rechargeable\n"); |
| 505 | break; |
| 506 | case 1: |
| 507 | seq_printf(seq, "battery technology: rechargeable\n"); |
| 508 | break; |
| 509 | default: |
| 510 | seq_printf(seq, "battery technology: unknown\n"); |
| 511 | break; |
| 512 | } |
| 513 | |
| 514 | if (bif->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 515 | seq_printf(seq, "design voltage: unknown\n"); |
| 516 | else |
| 517 | seq_printf(seq, "design voltage: %d mV\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 518 | (u32) bif->design_voltage); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 519 | seq_printf(seq, "design capacity warning: %d %sh\n", |
| 520 | (u32) bif->design_capacity_warning, units); |
| 521 | seq_printf(seq, "design capacity low: %d %sh\n", |
| 522 | (u32) bif->design_capacity_low, units); |
| 523 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
| 524 | (u32) bif->battery_capacity_granularity_1, units); |
| 525 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
| 526 | (u32) bif->battery_capacity_granularity_2, units); |
| 527 | seq_printf(seq, "model number: %s\n", bif->model_number); |
| 528 | seq_printf(seq, "serial number: %s\n", bif->serial_number); |
| 529 | seq_printf(seq, "battery type: %s\n", bif->battery_type); |
| 530 | seq_printf(seq, "OEM info: %s\n", bif->oem_info); |
| 531 | |
| 532 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 534 | if (result) |
| 535 | seq_printf(seq, "ERROR: Unable to read battery info\n"); |
| 536 | |
| 537 | return result; |
| 538 | } |
| 539 | |
| 540 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
| 541 | { |
| 542 | struct acpi_battery *battery = seq->private; |
| 543 | int result = 0; |
| 544 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
| 545 | int update = 0; |
| 546 | |
| 547 | acpi_battery_mutex_lock(battery); |
| 548 | |
| 549 | update = (get_seconds() - battery->info_update_time >= update_time); |
| 550 | update = (update | acpi_battery_info_update_flag(battery)); |
| 551 | |
| 552 | result = acpi_battery_update(battery, update, &update_result); |
| 553 | if (result) |
| 554 | goto end; |
| 555 | |
| 556 | /* Battery Info (_BIF) */ |
| 557 | |
| 558 | if (update_result == ACPI_BATTERY_EASY_UPDATE) { |
| 559 | result = acpi_battery_get_info(battery); |
| 560 | if (result) |
| 561 | goto end; |
| 562 | } |
| 563 | |
| 564 | end: |
| 565 | |
| 566 | result = acpi_battery_read_info_print(seq, result); |
| 567 | |
| 568 | acpi_battery_check_result(battery, result); |
| 569 | |
| 570 | acpi_battery_info_update_flag(battery) = result; |
| 571 | |
| 572 | acpi_battery_mutex_unlock(battery); |
| 573 | |
| 574 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) |
| 578 | { |
| 579 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); |
| 580 | } |
| 581 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 582 | static int acpi_battery_read_state_print(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 584 | struct acpi_battery *battery = seq->private; |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 585 | struct acpi_battery_state *bst = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 586 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 588 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | goto end; |
| 590 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 591 | if (acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | seq_printf(seq, "present: yes\n"); |
| 593 | else { |
| 594 | seq_printf(seq, "present: no\n"); |
| 595 | goto end; |
| 596 | } |
| 597 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 598 | bst = battery->bst_data.pointer; |
| 599 | if (!bst) { |
| 600 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BST buffer is NULL")); |
| 601 | result = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | goto end; |
| 603 | } |
| 604 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 605 | /* Battery Units */ |
| 606 | |
| 607 | units = acpi_battery_power_units(battery); |
| 608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | if (!(bst->state & 0x04)) |
| 610 | seq_printf(seq, "capacity state: ok\n"); |
| 611 | else |
| 612 | seq_printf(seq, "capacity state: critical\n"); |
| 613 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 614 | if ((bst->state & 0x01) && (bst->state & 0x02)) { |
| 615 | seq_printf(seq, |
| 616 | "charging state: charging/discharging\n"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 617 | } else if (bst->state & 0x01) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | seq_printf(seq, "charging state: discharging\n"); |
| 619 | else if (bst->state & 0x02) |
| 620 | seq_printf(seq, "charging state: charging\n"); |
| 621 | else { |
| 622 | seq_printf(seq, "charging state: charged\n"); |
| 623 | } |
| 624 | |
| 625 | if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN) |
| 626 | seq_printf(seq, "present rate: unknown\n"); |
| 627 | else |
| 628 | seq_printf(seq, "present rate: %d %s\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 629 | (u32) bst->present_rate, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | |
| 631 | if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 632 | seq_printf(seq, "remaining capacity: unknown\n"); |
| 633 | else |
| 634 | seq_printf(seq, "remaining capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 635 | (u32) bst->remaining_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | |
| 637 | if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 638 | seq_printf(seq, "present voltage: unknown\n"); |
| 639 | else |
| 640 | seq_printf(seq, "present voltage: %d mV\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 641 | (u32) bst->present_voltage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 643 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 645 | if (result) { |
| 646 | seq_printf(seq, "ERROR: Unable to read battery state\n"); |
| 647 | } |
| 648 | |
| 649 | return result; |
| 650 | } |
| 651 | |
| 652 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) |
| 653 | { |
| 654 | struct acpi_battery *battery = seq->private; |
| 655 | int result = 0; |
| 656 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
| 657 | int update = 0; |
| 658 | |
| 659 | acpi_battery_mutex_lock(battery); |
| 660 | |
| 661 | update = (get_seconds() - battery->state_update_time >= update_time); |
| 662 | update = (update | acpi_battery_state_update_flag(battery)); |
| 663 | |
| 664 | result = acpi_battery_update(battery, update, &update_result); |
| 665 | if (result) |
| 666 | goto end; |
| 667 | |
| 668 | /* Battery State (_BST) */ |
| 669 | |
| 670 | if (update_result == ACPI_BATTERY_EASY_UPDATE) { |
| 671 | result = acpi_battery_get_state(battery); |
| 672 | if (result) |
| 673 | goto end; |
| 674 | } |
| 675 | |
| 676 | end: |
| 677 | |
| 678 | result = acpi_battery_read_state_print(seq, result); |
| 679 | |
| 680 | acpi_battery_check_result(battery, result); |
| 681 | |
| 682 | acpi_battery_state_update_flag(battery) = result; |
| 683 | |
| 684 | acpi_battery_mutex_unlock(battery); |
| 685 | |
| 686 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) |
| 690 | { |
| 691 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); |
| 692 | } |
| 693 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 694 | static int acpi_battery_read_alarm_print(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 696 | struct acpi_battery *battery = seq->private; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 697 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 699 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | goto end; |
| 701 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 702 | if (!acpi_battery_present(battery)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | seq_printf(seq, "present: no\n"); |
| 704 | goto end; |
| 705 | } |
| 706 | |
| 707 | /* Battery Units */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 708 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 709 | units = acpi_battery_power_units(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | |
| 711 | seq_printf(seq, "alarm: "); |
| 712 | if (!battery->alarm) |
| 713 | seq_printf(seq, "unsupported\n"); |
| 714 | else |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 715 | seq_printf(seq, "%lu %sh\n", battery->alarm, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 717 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 718 | |
| 719 | if (result) |
| 720 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); |
| 721 | |
| 722 | return result; |
| 723 | } |
| 724 | |
| 725 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) |
| 726 | { |
| 727 | struct acpi_battery *battery = seq->private; |
| 728 | int result = 0; |
| 729 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
| 730 | int update = 0; |
| 731 | |
| 732 | acpi_battery_mutex_lock(battery); |
| 733 | |
| 734 | update = (get_seconds() - battery->alarm_update_time >= update_time); |
| 735 | update = (update | acpi_battery_alarm_update_flag(battery)); |
| 736 | |
| 737 | result = acpi_battery_update(battery, update, &update_result); |
| 738 | if (result) |
| 739 | goto end; |
| 740 | |
| 741 | /* Battery Alarm */ |
| 742 | |
| 743 | if (update_result == ACPI_BATTERY_EASY_UPDATE) { |
| 744 | result = acpi_battery_get_alarm(battery); |
| 745 | if (result) |
| 746 | goto end; |
| 747 | } |
| 748 | |
| 749 | end: |
| 750 | |
| 751 | result = acpi_battery_read_alarm_print(seq, result); |
| 752 | |
| 753 | acpi_battery_check_result(battery, result); |
| 754 | |
| 755 | acpi_battery_alarm_update_flag(battery) = result; |
| 756 | |
| 757 | acpi_battery_mutex_unlock(battery); |
| 758 | |
| 759 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 763 | acpi_battery_write_alarm(struct file *file, |
| 764 | const char __user * buffer, |
| 765 | size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 767 | int result = 0; |
| 768 | char alarm_string[12] = { '\0' }; |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 769 | struct seq_file *m = file->private_data; |
| 770 | struct acpi_battery *battery = m->private; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 771 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | |
| 774 | if (!battery || (count > sizeof(alarm_string) - 1)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 775 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 777 | acpi_battery_mutex_lock(battery); |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 778 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 779 | result = acpi_battery_update(battery, 1, &update_result); |
| 780 | if (result) { |
| 781 | result = -ENODEV; |
| 782 | goto end; |
| 783 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 785 | if (!acpi_battery_present(battery)) { |
| 786 | result = -ENODEV; |
| 787 | goto end; |
| 788 | } |
| 789 | |
| 790 | if (copy_from_user(alarm_string, buffer, count)) { |
| 791 | result = -EFAULT; |
| 792 | goto end; |
| 793 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | alarm_string[count] = '\0'; |
| 796 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 797 | result = acpi_battery_set_alarm(battery, |
| 798 | simple_strtoul(alarm_string, NULL, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 800 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 802 | end: |
| 803 | |
| 804 | acpi_battery_check_result(battery, result); |
| 805 | |
| 806 | if (!result) |
| 807 | result = count; |
| 808 | |
| 809 | acpi_battery_mutex_unlock(battery); |
| 810 | |
| 811 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) |
| 815 | { |
| 816 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); |
| 817 | } |
| 818 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 819 | static const struct file_operations acpi_battery_info_ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 820 | .open = acpi_battery_info_open_fs, |
| 821 | .read = seq_read, |
| 822 | .llseek = seq_lseek, |
| 823 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | .owner = THIS_MODULE, |
| 825 | }; |
| 826 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 827 | static const struct file_operations acpi_battery_state_ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 828 | .open = acpi_battery_state_open_fs, |
| 829 | .read = seq_read, |
| 830 | .llseek = seq_lseek, |
| 831 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | .owner = THIS_MODULE, |
| 833 | }; |
| 834 | |
Arjan van de Ven | d750803 | 2006-07-04 13:06:00 -0400 | [diff] [blame] | 835 | static const struct file_operations acpi_battery_alarm_ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 836 | .open = acpi_battery_alarm_open_fs, |
| 837 | .read = seq_read, |
| 838 | .write = acpi_battery_write_alarm, |
| 839 | .llseek = seq_lseek, |
| 840 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | .owner = THIS_MODULE, |
| 842 | }; |
| 843 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 844 | static int acpi_battery_add_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 846 | struct proc_dir_entry *entry = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | |
| 849 | if (!acpi_device_dir(device)) { |
| 850 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 851 | acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | if (!acpi_device_dir(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 853 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 855 | } |
| 856 | |
| 857 | /* 'info' [R] */ |
| 858 | entry = create_proc_entry(ACPI_BATTERY_FILE_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 859 | S_IRUGO, acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | if (!entry) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 861 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | else { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 863 | entry->proc_fops = &acpi_battery_info_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | entry->data = acpi_driver_data(device); |
| 865 | entry->owner = THIS_MODULE; |
| 866 | } |
| 867 | |
| 868 | /* 'status' [R] */ |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 869 | entry = create_proc_entry(ACPI_BATTERY_FILE_STATE, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 870 | S_IRUGO, acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | if (!entry) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 872 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | else { |
| 874 | entry->proc_fops = &acpi_battery_state_ops; |
| 875 | entry->data = acpi_driver_data(device); |
| 876 | entry->owner = THIS_MODULE; |
| 877 | } |
| 878 | |
| 879 | /* 'alarm' [R/W] */ |
| 880 | entry = create_proc_entry(ACPI_BATTERY_FILE_ALARM, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 881 | S_IFREG | S_IRUGO | S_IWUSR, |
| 882 | acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | if (!entry) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 884 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | else { |
| 886 | entry->proc_fops = &acpi_battery_alarm_ops; |
| 887 | entry->data = acpi_driver_data(device); |
| 888 | entry->owner = THIS_MODULE; |
| 889 | } |
| 890 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 891 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | } |
| 893 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 894 | static int acpi_battery_remove_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | if (acpi_device_dir(device)) { |
| 897 | remove_proc_entry(ACPI_BATTERY_FILE_ALARM, |
| 898 | acpi_device_dir(device)); |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 899 | remove_proc_entry(ACPI_BATTERY_FILE_STATE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | acpi_device_dir(device)); |
| 901 | remove_proc_entry(ACPI_BATTERY_FILE_INFO, |
| 902 | acpi_device_dir(device)); |
| 903 | |
| 904 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
| 905 | acpi_device_dir(device) = NULL; |
| 906 | } |
| 907 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 908 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | } |
| 910 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | /* -------------------------------------------------------------------------- |
| 912 | Driver Interface |
| 913 | -------------------------------------------------------------------------- */ |
| 914 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 915 | static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 917 | struct acpi_battery *battery = data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 918 | struct acpi_device *device = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
| 921 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 922 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 924 | device = battery->device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
| 926 | switch (event) { |
| 927 | case ACPI_BATTERY_NOTIFY_STATUS: |
| 928 | case ACPI_BATTERY_NOTIFY_INFO: |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 929 | case ACPI_NOTIFY_BUS_CHECK: |
| 930 | case ACPI_NOTIFY_DEVICE_CHECK: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 931 | acpi_battery_mutex_lock(battery); |
| 932 | device = battery->device; |
| 933 | acpi_battery_notify_update(battery); |
| 934 | acpi_battery_mutex_unlock(battery); |
| 935 | acpi_bus_generate_event(device, event, acpi_battery_present(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | break; |
| 937 | default: |
| 938 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 939 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | break; |
| 941 | } |
| 942 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 943 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | } |
| 945 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 946 | static int acpi_battery_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 948 | int result = 0; |
| 949 | acpi_status status = 0; |
| 950 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 953 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 955 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 957 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 959 | mutex_init(&battery->mutex); |
| 960 | |
| 961 | acpi_battery_mutex_lock(battery); |
| 962 | |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 963 | battery->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
| 965 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); |
| 966 | acpi_driver_data(device) = battery; |
| 967 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 968 | result = acpi_battery_get_status(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | if (result) |
| 970 | goto end; |
| 971 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 972 | acpi_battery_init_update_flag(battery) = 1; |
| 973 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | result = acpi_battery_add_fs(device); |
| 975 | if (result) |
| 976 | goto end; |
| 977 | |
Patrick Mochel | 3b073ec | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 978 | status = acpi_install_notify_handler(device->handle, |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 979 | ACPI_ALL_NOTIFY, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 980 | acpi_battery_notify, battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | if (ACPI_FAILURE(status)) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 982 | ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | result = -ENODEV; |
| 984 | goto end; |
| 985 | } |
| 986 | |
| 987 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 988 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
| 989 | device->status.battery_present ? "present" : "absent"); |
| 990 | |
| 991 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 992 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | if (result) { |
| 994 | acpi_battery_remove_fs(device); |
| 995 | kfree(battery); |
| 996 | } |
| 997 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 998 | acpi_battery_mutex_unlock(battery); |
| 999 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1000 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | } |
| 1002 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1003 | static int acpi_battery_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1005 | acpi_status status = 0; |
| 1006 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1009 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1011 | battery = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 1013 | acpi_battery_mutex_lock(battery); |
| 1014 | |
Patrick Mochel | 3b073ec | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 1015 | status = acpi_remove_notify_handler(device->handle, |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 1016 | ACPI_ALL_NOTIFY, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1017 | acpi_battery_notify); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
| 1019 | acpi_battery_remove_fs(device); |
| 1020 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 1021 | if (battery->bif_data.pointer) |
| 1022 | kfree(battery->bif_data.pointer); |
| 1023 | |
| 1024 | if (battery->bst_data.pointer) |
| 1025 | kfree(battery->bst_data.pointer); |
| 1026 | |
| 1027 | acpi_battery_mutex_unlock(battery); |
| 1028 | |
| 1029 | mutex_destroy(&battery->mutex); |
| 1030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | kfree(battery); |
| 1032 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1033 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | } |
| 1035 | |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1036 | /* this is needed to learn about changes made in suspended state */ |
Patrick Mochel | 5d9464a | 2006-12-07 20:56:27 +0800 | [diff] [blame] | 1037 | static int acpi_battery_resume(struct acpi_device *device) |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1038 | { |
| 1039 | struct acpi_battery *battery; |
| 1040 | |
| 1041 | if (!device) |
| 1042 | return -EINVAL; |
| 1043 | |
| 1044 | battery = device->driver_data; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame^] | 1045 | |
| 1046 | acpi_battery_init_update_flag(battery) = 1; |
| 1047 | |
| 1048 | return 0; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1049 | } |
| 1050 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1051 | static int __init acpi_battery_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | { |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 1053 | int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 1055 | if (acpi_disabled) |
| 1056 | return -ENODEV; |
| 1057 | |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 1058 | acpi_battery_dir = acpi_lock_battery_dir(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | if (!acpi_battery_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1060 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | |
| 1062 | result = acpi_bus_register_driver(&acpi_battery_driver); |
| 1063 | if (result < 0) { |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 1064 | acpi_unlock_battery_dir(acpi_battery_dir); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1065 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | } |
| 1067 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1068 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | } |
| 1070 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1071 | static void __exit acpi_battery_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1073 | acpi_bus_unregister_driver(&acpi_battery_driver); |
| 1074 | |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 1075 | acpi_unlock_battery_dir(acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1077 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | } |
| 1079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | module_init(acpi_battery_init); |
| 1081 | module_exit(acpi_battery_exit); |