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" |
| 45 | #define ACPI_BATTERY_DRIVER_NAME "ACPI Battery Driver" |
| 46 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
| 47 | #define ACPI_BATTERY_FILE_INFO "info" |
| 48 | #define ACPI_BATTERY_FILE_STATUS "state" |
| 49 | #define ACPI_BATTERY_FILE_ALARM "alarm" |
| 50 | #define ACPI_BATTERY_NOTIFY_STATUS 0x80 |
| 51 | #define ACPI_BATTERY_NOTIFY_INFO 0x81 |
| 52 | #define ACPI_BATTERY_UNITS_WATTS "mW" |
| 53 | #define ACPI_BATTERY_UNITS_AMPS "mA" |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 56 | ACPI_MODULE_NAME("acpi_battery") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 58 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | MODULE_DESCRIPTION(ACPI_BATTERY_DRIVER_NAME); |
| 60 | MODULE_LICENSE("GPL"); |
| 61 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 62 | static int acpi_battery_add(struct acpi_device *device); |
| 63 | static int acpi_battery_remove(struct acpi_device *device, int type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | static struct acpi_driver acpi_battery_driver = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 66 | .name = ACPI_BATTERY_DRIVER_NAME, |
| 67 | .class = ACPI_BATTERY_CLASS, |
| 68 | .ids = ACPI_BATTERY_HID, |
| 69 | .ops = { |
| 70 | .add = acpi_battery_add, |
| 71 | .remove = acpi_battery_remove, |
| 72 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | }; |
| 74 | |
| 75 | struct acpi_battery_status { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | acpi_integer state; |
| 77 | acpi_integer present_rate; |
| 78 | acpi_integer remaining_capacity; |
| 79 | acpi_integer present_voltage; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | }; |
| 81 | |
| 82 | struct acpi_battery_info { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 83 | acpi_integer power_unit; |
| 84 | acpi_integer design_capacity; |
| 85 | acpi_integer last_full_capacity; |
| 86 | acpi_integer battery_technology; |
| 87 | acpi_integer design_voltage; |
| 88 | acpi_integer design_capacity_warning; |
| 89 | acpi_integer design_capacity_low; |
| 90 | acpi_integer battery_capacity_granularity_1; |
| 91 | acpi_integer battery_capacity_granularity_2; |
| 92 | acpi_string model_number; |
| 93 | acpi_string serial_number; |
| 94 | acpi_string battery_type; |
| 95 | acpi_string oem_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | }; |
| 97 | |
| 98 | struct acpi_battery_flags { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 99 | u8 present:1; /* Bay occupied? */ |
| 100 | u8 power_unit:1; /* 0=watts, 1=apms */ |
| 101 | u8 alarm:1; /* _BTP present? */ |
| 102 | u8 reserved:5; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | }; |
| 104 | |
| 105 | struct acpi_battery_trips { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | unsigned long warning; |
| 107 | unsigned long low; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | }; |
| 109 | |
| 110 | struct acpi_battery { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 111 | acpi_handle handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | struct acpi_battery_flags flags; |
| 113 | struct acpi_battery_trips trips; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 114 | unsigned long alarm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | struct acpi_battery_info *info; |
| 116 | }; |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | /* -------------------------------------------------------------------------- |
| 119 | Battery Management |
| 120 | -------------------------------------------------------------------------- */ |
| 121 | |
| 122 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 123 | acpi_battery_get_info(struct acpi_battery *battery, |
| 124 | struct acpi_battery_info **bif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 126 | int result = 0; |
| 127 | acpi_status status = 0; |
| 128 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 129 | struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BIF), |
| 130 | ACPI_BATTERY_FORMAT_BIF |
| 131 | }; |
| 132 | struct acpi_buffer data = { 0, NULL }; |
| 133 | union acpi_object *package = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | ACPI_FUNCTION_TRACE("acpi_battery_get_info"); |
| 136 | |
| 137 | if (!battery || !bif) |
| 138 | return_VALUE(-EINVAL); |
| 139 | |
| 140 | /* Evalute _BIF */ |
| 141 | |
| 142 | status = acpi_evaluate_object(battery->handle, "_BIF", NULL, &buffer); |
| 143 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 144 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | return_VALUE(-ENODEV); |
| 146 | } |
| 147 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 148 | package = (union acpi_object *)buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
| 150 | /* Extract Package Data */ |
| 151 | |
| 152 | status = acpi_extract_package(package, &format, &data); |
| 153 | if (status != AE_BUFFER_OVERFLOW) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 154 | ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | result = -ENODEV; |
| 156 | goto end; |
| 157 | } |
| 158 | |
| 159 | data.pointer = kmalloc(data.length, GFP_KERNEL); |
| 160 | if (!data.pointer) { |
| 161 | result = -ENOMEM; |
| 162 | goto end; |
| 163 | } |
| 164 | memset(data.pointer, 0, data.length); |
| 165 | |
| 166 | status = acpi_extract_package(package, &format, &data); |
| 167 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 168 | ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | kfree(data.pointer); |
| 170 | result = -ENODEV; |
| 171 | goto end; |
| 172 | } |
| 173 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 174 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | acpi_os_free(buffer.pointer); |
| 176 | |
| 177 | if (!result) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 178 | (*bif) = (struct acpi_battery_info *)data.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
| 180 | return_VALUE(result); |
| 181 | } |
| 182 | |
| 183 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 184 | acpi_battery_get_status(struct acpi_battery *battery, |
| 185 | struct acpi_battery_status **bst) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 187 | int result = 0; |
| 188 | acpi_status status = 0; |
| 189 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 190 | struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BST), |
| 191 | ACPI_BATTERY_FORMAT_BST |
| 192 | }; |
| 193 | struct acpi_buffer data = { 0, NULL }; |
| 194 | union acpi_object *package = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | ACPI_FUNCTION_TRACE("acpi_battery_get_status"); |
| 197 | |
| 198 | if (!battery || !bst) |
| 199 | return_VALUE(-EINVAL); |
| 200 | |
| 201 | /* Evalute _BST */ |
| 202 | |
| 203 | status = acpi_evaluate_object(battery->handle, "_BST", NULL, &buffer); |
| 204 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 205 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | return_VALUE(-ENODEV); |
| 207 | } |
| 208 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 209 | package = (union acpi_object *)buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
| 211 | /* Extract Package Data */ |
| 212 | |
| 213 | status = acpi_extract_package(package, &format, &data); |
| 214 | if (status != AE_BUFFER_OVERFLOW) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 215 | ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | result = -ENODEV; |
| 217 | goto end; |
| 218 | } |
| 219 | |
| 220 | data.pointer = kmalloc(data.length, GFP_KERNEL); |
| 221 | if (!data.pointer) { |
| 222 | result = -ENOMEM; |
| 223 | goto end; |
| 224 | } |
| 225 | memset(data.pointer, 0, data.length); |
| 226 | |
| 227 | status = acpi_extract_package(package, &format, &data); |
| 228 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 229 | ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | kfree(data.pointer); |
| 231 | result = -ENODEV; |
| 232 | goto end; |
| 233 | } |
| 234 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 235 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | acpi_os_free(buffer.pointer); |
| 237 | |
| 238 | if (!result) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 239 | (*bst) = (struct acpi_battery_status *)data.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
| 241 | return_VALUE(result); |
| 242 | } |
| 243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | static int |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 245 | acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 247 | acpi_status status = 0; |
| 248 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 249 | struct acpi_object_list arg_list = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
| 251 | ACPI_FUNCTION_TRACE("acpi_battery_set_alarm"); |
| 252 | |
| 253 | if (!battery) |
| 254 | return_VALUE(-EINVAL); |
| 255 | |
| 256 | if (!battery->flags.alarm) |
| 257 | return_VALUE(-ENODEV); |
| 258 | |
| 259 | arg0.integer.value = alarm; |
| 260 | |
| 261 | status = acpi_evaluate_object(battery->handle, "_BTP", &arg_list, NULL); |
| 262 | if (ACPI_FAILURE(status)) |
| 263 | return_VALUE(-ENODEV); |
| 264 | |
| 265 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", (u32) alarm)); |
| 266 | |
| 267 | battery->alarm = alarm; |
| 268 | |
| 269 | return_VALUE(0); |
| 270 | } |
| 271 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 272 | static int acpi_battery_check(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 274 | int result = 0; |
| 275 | acpi_status status = AE_OK; |
| 276 | acpi_handle handle = NULL; |
| 277 | struct acpi_device *device = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | struct acpi_battery_info *bif = NULL; |
| 279 | |
| 280 | ACPI_FUNCTION_TRACE("acpi_battery_check"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | if (!battery) |
| 283 | return_VALUE(-EINVAL); |
| 284 | |
| 285 | result = acpi_bus_get_device(battery->handle, &device); |
| 286 | if (result) |
| 287 | return_VALUE(result); |
| 288 | |
| 289 | result = acpi_bus_get_status(device); |
| 290 | if (result) |
| 291 | return_VALUE(result); |
| 292 | |
| 293 | /* Insertion? */ |
| 294 | |
| 295 | if (!battery->flags.present && device->status.battery_present) { |
| 296 | |
| 297 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Battery inserted\n")); |
| 298 | |
| 299 | /* Evalute _BIF to get certain static information */ |
| 300 | |
| 301 | result = acpi_battery_get_info(battery, &bif); |
| 302 | if (result) |
| 303 | return_VALUE(result); |
| 304 | |
| 305 | battery->flags.power_unit = bif->power_unit; |
| 306 | battery->trips.warning = bif->design_capacity_warning; |
| 307 | battery->trips.low = bif->design_capacity_low; |
| 308 | kfree(bif); |
| 309 | |
| 310 | /* See if alarms are supported, and if so, set default */ |
| 311 | |
| 312 | status = acpi_get_handle(battery->handle, "_BTP", &handle); |
| 313 | if (ACPI_SUCCESS(status)) { |
| 314 | battery->flags.alarm = 1; |
| 315 | acpi_battery_set_alarm(battery, battery->trips.warning); |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | /* Removal? */ |
| 320 | |
| 321 | else if (battery->flags.present && !device->status.battery_present) { |
| 322 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Battery removed\n")); |
| 323 | } |
| 324 | |
| 325 | battery->flags.present = device->status.battery_present; |
| 326 | |
| 327 | return_VALUE(result); |
| 328 | } |
| 329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | /* -------------------------------------------------------------------------- |
| 331 | FS Interface (/proc) |
| 332 | -------------------------------------------------------------------------- */ |
| 333 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 334 | static struct proc_dir_entry *acpi_battery_dir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
| 336 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 337 | int result = 0; |
| 338 | struct acpi_battery *battery = (struct acpi_battery *)seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | struct acpi_battery_info *bif = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 340 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | |
| 342 | ACPI_FUNCTION_TRACE("acpi_battery_read_info"); |
| 343 | |
| 344 | if (!battery) |
| 345 | goto end; |
| 346 | |
| 347 | if (battery->flags.present) |
| 348 | seq_printf(seq, "present: yes\n"); |
| 349 | else { |
| 350 | seq_printf(seq, "present: no\n"); |
| 351 | goto end; |
| 352 | } |
| 353 | |
| 354 | /* Battery Info (_BIF) */ |
| 355 | |
| 356 | result = acpi_battery_get_info(battery, &bif); |
| 357 | if (result || !bif) { |
| 358 | seq_printf(seq, "ERROR: Unable to read battery information\n"); |
| 359 | goto end; |
| 360 | } |
| 361 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 362 | units = |
| 363 | bif-> |
| 364 | power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS; |
| 365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | if (bif->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 367 | seq_printf(seq, "design capacity: unknown\n"); |
| 368 | else |
| 369 | seq_printf(seq, "design capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 370 | (u32) bif->design_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
| 372 | if (bif->last_full_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 373 | seq_printf(seq, "last full capacity: unknown\n"); |
| 374 | else |
| 375 | seq_printf(seq, "last full capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | (u32) bif->last_full_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | switch ((u32) bif->battery_technology) { |
| 379 | case 0: |
| 380 | seq_printf(seq, "battery technology: non-rechargeable\n"); |
| 381 | break; |
| 382 | case 1: |
| 383 | seq_printf(seq, "battery technology: rechargeable\n"); |
| 384 | break; |
| 385 | default: |
| 386 | seq_printf(seq, "battery technology: unknown\n"); |
| 387 | break; |
| 388 | } |
| 389 | |
| 390 | if (bif->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 391 | seq_printf(seq, "design voltage: unknown\n"); |
| 392 | else |
| 393 | seq_printf(seq, "design voltage: %d mV\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 394 | (u32) bif->design_voltage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 396 | seq_printf(seq, "design capacity warning: %d %sh\n", |
| 397 | (u32) bif->design_capacity_warning, units); |
| 398 | seq_printf(seq, "design capacity low: %d %sh\n", |
| 399 | (u32) bif->design_capacity_low, units); |
| 400 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
| 401 | (u32) bif->battery_capacity_granularity_1, units); |
| 402 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
| 403 | (u32) bif->battery_capacity_granularity_2, units); |
| 404 | seq_printf(seq, "model number: %s\n", bif->model_number); |
| 405 | seq_printf(seq, "serial number: %s\n", bif->serial_number); |
| 406 | seq_printf(seq, "battery type: %s\n", bif->battery_type); |
| 407 | seq_printf(seq, "OEM info: %s\n", bif->oem_info); |
| 408 | |
| 409 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | kfree(bif); |
| 411 | |
| 412 | return_VALUE(0); |
| 413 | } |
| 414 | |
| 415 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) |
| 416 | { |
| 417 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); |
| 418 | } |
| 419 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 420 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 422 | int result = 0; |
| 423 | struct acpi_battery *battery = (struct acpi_battery *)seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | struct acpi_battery_status *bst = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 425 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
| 427 | ACPI_FUNCTION_TRACE("acpi_battery_read_state"); |
| 428 | |
| 429 | if (!battery) |
| 430 | goto end; |
| 431 | |
| 432 | if (battery->flags.present) |
| 433 | seq_printf(seq, "present: yes\n"); |
| 434 | else { |
| 435 | seq_printf(seq, "present: no\n"); |
| 436 | goto end; |
| 437 | } |
| 438 | |
| 439 | /* Battery Units */ |
| 440 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 441 | units = |
| 442 | battery->flags. |
| 443 | power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
| 445 | /* Battery Status (_BST) */ |
| 446 | |
| 447 | result = acpi_battery_get_status(battery, &bst); |
| 448 | if (result || !bst) { |
| 449 | seq_printf(seq, "ERROR: Unable to read battery status\n"); |
| 450 | goto end; |
| 451 | } |
| 452 | |
| 453 | if (!(bst->state & 0x04)) |
| 454 | seq_printf(seq, "capacity state: ok\n"); |
| 455 | else |
| 456 | seq_printf(seq, "capacity state: critical\n"); |
| 457 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 458 | if ((bst->state & 0x01) && (bst->state & 0x02)) { |
| 459 | seq_printf(seq, |
| 460 | "charging state: charging/discharging\n"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 461 | } else if (bst->state & 0x01) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | seq_printf(seq, "charging state: discharging\n"); |
| 463 | else if (bst->state & 0x02) |
| 464 | seq_printf(seq, "charging state: charging\n"); |
| 465 | else { |
| 466 | seq_printf(seq, "charging state: charged\n"); |
| 467 | } |
| 468 | |
| 469 | if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN) |
| 470 | seq_printf(seq, "present rate: unknown\n"); |
| 471 | else |
| 472 | seq_printf(seq, "present rate: %d %s\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 473 | (u32) bst->present_rate, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
| 475 | if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 476 | seq_printf(seq, "remaining capacity: unknown\n"); |
| 477 | else |
| 478 | seq_printf(seq, "remaining capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 479 | (u32) bst->remaining_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 482 | seq_printf(seq, "present voltage: unknown\n"); |
| 483 | else |
| 484 | seq_printf(seq, "present voltage: %d mV\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 485 | (u32) bst->present_voltage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 487 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | kfree(bst); |
| 489 | |
| 490 | return_VALUE(0); |
| 491 | } |
| 492 | |
| 493 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) |
| 494 | { |
| 495 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); |
| 496 | } |
| 497 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 498 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 500 | struct acpi_battery *battery = (struct acpi_battery *)seq->private; |
| 501 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
| 503 | ACPI_FUNCTION_TRACE("acpi_battery_read_alarm"); |
| 504 | |
| 505 | if (!battery) |
| 506 | goto end; |
| 507 | |
| 508 | if (!battery->flags.present) { |
| 509 | seq_printf(seq, "present: no\n"); |
| 510 | goto end; |
| 511 | } |
| 512 | |
| 513 | /* Battery Units */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 514 | |
| 515 | units = |
| 516 | battery->flags. |
| 517 | power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | |
| 519 | /* Battery Alarm */ |
| 520 | |
| 521 | seq_printf(seq, "alarm: "); |
| 522 | if (!battery->alarm) |
| 523 | seq_printf(seq, "unsupported\n"); |
| 524 | else |
| 525 | seq_printf(seq, "%d %sh\n", (u32) battery->alarm, units); |
| 526 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 527 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | return_VALUE(0); |
| 529 | } |
| 530 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 532 | acpi_battery_write_alarm(struct file *file, |
| 533 | const char __user * buffer, |
| 534 | size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 536 | int result = 0; |
| 537 | char alarm_string[12] = { '\0' }; |
| 538 | struct seq_file *m = (struct seq_file *)file->private_data; |
| 539 | struct acpi_battery *battery = (struct acpi_battery *)m->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
| 541 | ACPI_FUNCTION_TRACE("acpi_battery_write_alarm"); |
| 542 | |
| 543 | if (!battery || (count > sizeof(alarm_string) - 1)) |
| 544 | return_VALUE(-EINVAL); |
| 545 | |
| 546 | if (!battery->flags.present) |
| 547 | return_VALUE(-ENODEV); |
| 548 | |
| 549 | if (copy_from_user(alarm_string, buffer, count)) |
| 550 | return_VALUE(-EFAULT); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | alarm_string[count] = '\0'; |
| 553 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 554 | result = acpi_battery_set_alarm(battery, |
| 555 | simple_strtoul(alarm_string, NULL, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | if (result) |
| 557 | return_VALUE(result); |
| 558 | |
| 559 | return_VALUE(count); |
| 560 | } |
| 561 | |
| 562 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) |
| 563 | { |
| 564 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); |
| 565 | } |
| 566 | |
| 567 | static struct file_operations acpi_battery_info_ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 568 | .open = acpi_battery_info_open_fs, |
| 569 | .read = seq_read, |
| 570 | .llseek = seq_lseek, |
| 571 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | .owner = THIS_MODULE, |
| 573 | }; |
| 574 | |
| 575 | static struct file_operations acpi_battery_state_ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 576 | .open = acpi_battery_state_open_fs, |
| 577 | .read = seq_read, |
| 578 | .llseek = seq_lseek, |
| 579 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | .owner = THIS_MODULE, |
| 581 | }; |
| 582 | |
| 583 | static struct file_operations acpi_battery_alarm_ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 584 | .open = acpi_battery_alarm_open_fs, |
| 585 | .read = seq_read, |
| 586 | .write = acpi_battery_write_alarm, |
| 587 | .llseek = seq_lseek, |
| 588 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | .owner = THIS_MODULE, |
| 590 | }; |
| 591 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 592 | static int acpi_battery_add_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 594 | struct proc_dir_entry *entry = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
| 596 | ACPI_FUNCTION_TRACE("acpi_battery_add_fs"); |
| 597 | |
| 598 | if (!acpi_device_dir(device)) { |
| 599 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 600 | acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | if (!acpi_device_dir(device)) |
| 602 | return_VALUE(-ENODEV); |
| 603 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 604 | } |
| 605 | |
| 606 | /* 'info' [R] */ |
| 607 | entry = create_proc_entry(ACPI_BATTERY_FILE_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 608 | S_IRUGO, acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | if (!entry) |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 610 | return_VALUE(-ENODEV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | else { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 612 | entry->proc_fops = &acpi_battery_info_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | entry->data = acpi_driver_data(device); |
| 614 | entry->owner = THIS_MODULE; |
| 615 | } |
| 616 | |
| 617 | /* 'status' [R] */ |
| 618 | entry = create_proc_entry(ACPI_BATTERY_FILE_STATUS, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 619 | S_IRUGO, acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | if (!entry) |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 621 | return_VALUE(-ENODEV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | else { |
| 623 | entry->proc_fops = &acpi_battery_state_ops; |
| 624 | entry->data = acpi_driver_data(device); |
| 625 | entry->owner = THIS_MODULE; |
| 626 | } |
| 627 | |
| 628 | /* 'alarm' [R/W] */ |
| 629 | entry = create_proc_entry(ACPI_BATTERY_FILE_ALARM, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 630 | S_IFREG | S_IRUGO | S_IWUSR, |
| 631 | acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | if (!entry) |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 633 | return_VALUE(-ENODEV); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | else { |
| 635 | entry->proc_fops = &acpi_battery_alarm_ops; |
| 636 | entry->data = acpi_driver_data(device); |
| 637 | entry->owner = THIS_MODULE; |
| 638 | } |
| 639 | |
| 640 | return_VALUE(0); |
| 641 | } |
| 642 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 643 | static int acpi_battery_remove_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | { |
| 645 | ACPI_FUNCTION_TRACE("acpi_battery_remove_fs"); |
| 646 | |
| 647 | if (acpi_device_dir(device)) { |
| 648 | remove_proc_entry(ACPI_BATTERY_FILE_ALARM, |
| 649 | acpi_device_dir(device)); |
| 650 | remove_proc_entry(ACPI_BATTERY_FILE_STATUS, |
| 651 | acpi_device_dir(device)); |
| 652 | remove_proc_entry(ACPI_BATTERY_FILE_INFO, |
| 653 | acpi_device_dir(device)); |
| 654 | |
| 655 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
| 656 | acpi_device_dir(device) = NULL; |
| 657 | } |
| 658 | |
| 659 | return_VALUE(0); |
| 660 | } |
| 661 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | /* -------------------------------------------------------------------------- |
| 663 | Driver Interface |
| 664 | -------------------------------------------------------------------------- */ |
| 665 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 666 | static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 668 | struct acpi_battery *battery = (struct acpi_battery *)data; |
| 669 | struct acpi_device *device = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
| 671 | ACPI_FUNCTION_TRACE("acpi_battery_notify"); |
| 672 | |
| 673 | if (!battery) |
| 674 | return_VOID; |
| 675 | |
| 676 | if (acpi_bus_get_device(handle, &device)) |
| 677 | return_VOID; |
| 678 | |
| 679 | switch (event) { |
| 680 | case ACPI_BATTERY_NOTIFY_STATUS: |
| 681 | case ACPI_BATTERY_NOTIFY_INFO: |
| 682 | acpi_battery_check(battery); |
| 683 | acpi_bus_generate_event(device, event, battery->flags.present); |
| 684 | break; |
| 685 | default: |
| 686 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 687 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | break; |
| 689 | } |
| 690 | |
| 691 | return_VOID; |
| 692 | } |
| 693 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 694 | static int acpi_battery_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 696 | int result = 0; |
| 697 | acpi_status status = 0; |
| 698 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | |
| 700 | ACPI_FUNCTION_TRACE("acpi_battery_add"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | if (!device) |
| 703 | return_VALUE(-EINVAL); |
| 704 | |
| 705 | battery = kmalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
| 706 | if (!battery) |
| 707 | return_VALUE(-ENOMEM); |
| 708 | memset(battery, 0, sizeof(struct acpi_battery)); |
| 709 | |
| 710 | battery->handle = device->handle; |
| 711 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
| 712 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); |
| 713 | acpi_driver_data(device) = battery; |
| 714 | |
| 715 | result = acpi_battery_check(battery); |
| 716 | if (result) |
| 717 | goto end; |
| 718 | |
| 719 | result = acpi_battery_add_fs(device); |
| 720 | if (result) |
| 721 | goto end; |
| 722 | |
| 723 | status = acpi_install_notify_handler(battery->handle, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 724 | ACPI_DEVICE_NOTIFY, |
| 725 | acpi_battery_notify, battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | result = -ENODEV; |
| 728 | goto end; |
| 729 | } |
| 730 | |
| 731 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 732 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
| 733 | device->status.battery_present ? "present" : "absent"); |
| 734 | |
| 735 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | if (result) { |
| 737 | acpi_battery_remove_fs(device); |
| 738 | kfree(battery); |
| 739 | } |
| 740 | |
| 741 | return_VALUE(result); |
| 742 | } |
| 743 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 744 | static int acpi_battery_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 746 | acpi_status status = 0; |
| 747 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
| 749 | ACPI_FUNCTION_TRACE("acpi_battery_remove"); |
| 750 | |
| 751 | if (!device || !acpi_driver_data(device)) |
| 752 | return_VALUE(-EINVAL); |
| 753 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 754 | battery = (struct acpi_battery *)acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
| 756 | status = acpi_remove_notify_handler(battery->handle, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 757 | ACPI_DEVICE_NOTIFY, |
| 758 | acpi_battery_notify); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
| 760 | acpi_battery_remove_fs(device); |
| 761 | |
| 762 | kfree(battery); |
| 763 | |
| 764 | return_VALUE(0); |
| 765 | } |
| 766 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 767 | static int __init acpi_battery_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 769 | int result = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
| 771 | ACPI_FUNCTION_TRACE("acpi_battery_init"); |
| 772 | |
| 773 | acpi_battery_dir = proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir); |
| 774 | if (!acpi_battery_dir) |
| 775 | return_VALUE(-ENODEV); |
| 776 | acpi_battery_dir->owner = THIS_MODULE; |
| 777 | |
| 778 | result = acpi_bus_register_driver(&acpi_battery_driver); |
| 779 | if (result < 0) { |
| 780 | remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir); |
| 781 | return_VALUE(-ENODEV); |
| 782 | } |
| 783 | |
| 784 | return_VALUE(0); |
| 785 | } |
| 786 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 787 | static void __exit acpi_battery_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | { |
| 789 | ACPI_FUNCTION_TRACE("acpi_battery_exit"); |
| 790 | |
| 791 | acpi_bus_unregister_driver(&acpi_battery_driver); |
| 792 | |
| 793 | remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir); |
| 794 | |
| 795 | return_VOID; |
| 796 | } |
| 797 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | module_init(acpi_battery_init); |
| 799 | module_exit(acpi_battery_exit); |