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" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #define ACPI_BATTERY_NOTIFY_STATUS 0x80 |
| 47 | #define ACPI_BATTERY_NOTIFY_INFO 0x81 |
| 48 | #define ACPI_BATTERY_UNITS_WATTS "mW" |
| 49 | #define ACPI_BATTERY_UNITS_AMPS "mA" |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 52 | |
| 53 | #define ACPI_BATTERY_UPDATE_TIME 0 |
| 54 | |
| 55 | #define ACPI_BATTERY_NONE_UPDATE 0 |
| 56 | #define ACPI_BATTERY_EASY_UPDATE 1 |
| 57 | #define ACPI_BATTERY_INIT_UPDATE 2 |
| 58 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 59 | ACPI_MODULE_NAME("battery"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 61 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 62 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | MODULE_LICENSE("GPL"); |
| 64 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 65 | static unsigned int update_time = ACPI_BATTERY_UPDATE_TIME; |
| 66 | |
| 67 | /* 0 - every time, > 0 - by update_time */ |
| 68 | module_param(update_time, uint, 0644); |
| 69 | |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 70 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
| 71 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); |
| 72 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 73 | static int acpi_battery_add(struct acpi_device *device); |
| 74 | static int acpi_battery_remove(struct acpi_device *device, int type); |
Patrick Mochel | 5d9464a | 2006-12-07 20:56:27 +0800 | [diff] [blame] | 75 | static int acpi_battery_resume(struct acpi_device *device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | static struct acpi_driver acpi_battery_driver = { |
Len Brown | c2b6705b | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 78 | .name = "battery", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 79 | .class = ACPI_BATTERY_CLASS, |
| 80 | .ids = ACPI_BATTERY_HID, |
| 81 | .ops = { |
| 82 | .add = acpi_battery_add, |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 83 | .resume = acpi_battery_resume, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 84 | .remove = acpi_battery_remove, |
| 85 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 88 | struct acpi_battery_state { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 89 | acpi_integer state; |
| 90 | acpi_integer present_rate; |
| 91 | acpi_integer remaining_capacity; |
| 92 | acpi_integer present_voltage; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | }; |
| 94 | |
| 95 | struct acpi_battery_info { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 96 | acpi_integer power_unit; |
| 97 | acpi_integer design_capacity; |
| 98 | acpi_integer last_full_capacity; |
| 99 | acpi_integer battery_technology; |
| 100 | acpi_integer design_voltage; |
| 101 | acpi_integer design_capacity_warning; |
| 102 | acpi_integer design_capacity_low; |
| 103 | acpi_integer battery_capacity_granularity_1; |
| 104 | acpi_integer battery_capacity_granularity_2; |
| 105 | acpi_string model_number; |
| 106 | acpi_string serial_number; |
| 107 | acpi_string battery_type; |
| 108 | acpi_string oem_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | }; |
| 110 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 111 | enum acpi_battery_files{ |
| 112 | ACPI_BATTERY_INFO = 0, |
| 113 | ACPI_BATTERY_STATE, |
| 114 | ACPI_BATTERY_ALARM, |
| 115 | ACPI_BATTERY_NUMFILES, |
| 116 | }; |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | struct acpi_battery_flags { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 119 | u8 battery_present_prev; |
| 120 | u8 alarm_present; |
| 121 | u8 init_update; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 122 | u8 update[ACPI_BATTERY_NUMFILES]; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 123 | u8 power_unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | }; |
| 125 | |
| 126 | struct acpi_battery { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 127 | struct mutex mutex; |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 128 | struct acpi_device *device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | struct acpi_battery_flags flags; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 130 | struct acpi_buffer bif_data; |
| 131 | struct acpi_buffer bst_data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 132 | unsigned long alarm; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 133 | unsigned long update_time[ACPI_BATTERY_NUMFILES]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | }; |
| 135 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 136 | inline int acpi_battery_present(struct acpi_battery *battery) |
| 137 | { |
| 138 | return battery->device->status.battery_present; |
| 139 | } |
| 140 | inline char *acpi_battery_power_units(struct acpi_battery *battery) |
| 141 | { |
| 142 | if (battery->flags.power_unit) |
| 143 | return ACPI_BATTERY_UNITS_AMPS; |
| 144 | else |
| 145 | return ACPI_BATTERY_UNITS_WATTS; |
| 146 | } |
| 147 | |
| 148 | inline acpi_handle acpi_battery_handle(struct acpi_battery *battery) |
| 149 | { |
| 150 | return battery->device->handle; |
| 151 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | /* -------------------------------------------------------------------------- |
| 154 | Battery Management |
| 155 | -------------------------------------------------------------------------- */ |
| 156 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 157 | static void acpi_battery_check_result(struct acpi_battery *battery, int result) |
| 158 | { |
| 159 | if (!battery) |
| 160 | return; |
| 161 | |
| 162 | if (result) { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 163 | battery->flags.init_update = 1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 164 | } |
| 165 | } |
| 166 | |
| 167 | static int acpi_battery_extract_package(struct acpi_battery *battery, |
| 168 | union acpi_object *package, |
| 169 | struct acpi_buffer *format, |
| 170 | struct acpi_buffer *data, |
| 171 | char *package_name) |
| 172 | { |
| 173 | acpi_status status = AE_OK; |
| 174 | struct acpi_buffer data_null = { 0, NULL }; |
| 175 | |
| 176 | status = acpi_extract_package(package, format, &data_null); |
| 177 | if (status != AE_BUFFER_OVERFLOW) { |
| 178 | ACPI_EXCEPTION((AE_INFO, status, "Extracting size %s", |
| 179 | package_name)); |
| 180 | return -ENODEV; |
| 181 | } |
| 182 | |
| 183 | if (data_null.length != data->length) { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 184 | kfree(data->pointer); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 185 | data->pointer = kzalloc(data_null.length, GFP_KERNEL); |
| 186 | if (!data->pointer) { |
| 187 | ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "kzalloc()")); |
| 188 | return -ENOMEM; |
| 189 | } |
| 190 | data->length = data_null.length; |
| 191 | } |
| 192 | |
| 193 | status = acpi_extract_package(package, format, data); |
| 194 | if (ACPI_FAILURE(status)) { |
| 195 | ACPI_EXCEPTION((AE_INFO, status, "Extracting %s", |
| 196 | package_name)); |
| 197 | return -ENODEV; |
| 198 | } |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | static int acpi_battery_get_status(struct acpi_battery *battery) |
| 204 | { |
| 205 | int result = 0; |
| 206 | |
| 207 | result = acpi_bus_get_status(battery->device); |
| 208 | if (result) { |
| 209 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
| 210 | return -ENODEV; |
| 211 | } |
| 212 | return result; |
| 213 | } |
| 214 | |
| 215 | static int acpi_battery_get_info(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 217 | int result = 0; |
| 218 | acpi_status status = 0; |
| 219 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 220 | struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BIF), |
| 221 | ACPI_BATTERY_FORMAT_BIF |
| 222 | }; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 223 | union acpi_object *package = NULL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 224 | struct acpi_buffer *data = NULL; |
| 225 | struct acpi_battery_info *bif = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 227 | battery->update_time[ACPI_BATTERY_INFO] = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 229 | if (!acpi_battery_present(battery)) |
| 230 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 232 | /* Evaluate _BIF */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 234 | status = |
| 235 | acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL, |
| 236 | &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 238 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 239 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } |
| 241 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 242 | package = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 244 | data = &battery->bif_data; |
| 245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | /* Extract Package Data */ |
| 247 | |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 248 | result = |
| 249 | acpi_battery_extract_package(battery, package, &format, data, |
| 250 | "_BIF"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 251 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 254 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 256 | kfree(buffer.pointer); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 257 | |
| 258 | if (!result) { |
| 259 | bif = data->pointer; |
| 260 | battery->flags.power_unit = bif->power_unit; |
| 261 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 263 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | } |
| 265 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 266 | static int acpi_battery_get_state(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 268 | int result = 0; |
| 269 | acpi_status status = 0; |
| 270 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| 271 | struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BST), |
| 272 | ACPI_BATTERY_FORMAT_BST |
| 273 | }; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 274 | union acpi_object *package = NULL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 275 | struct acpi_buffer *data = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 277 | battery->update_time[ACPI_BATTERY_STATE] = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 279 | if (!acpi_battery_present(battery)) |
| 280 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 282 | /* Evaluate _BST */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 284 | status = |
| 285 | acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL, |
| 286 | &buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 288 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 289 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 292 | package = buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 294 | data = &battery->bst_data; |
| 295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | /* Extract Package Data */ |
| 297 | |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 298 | result = |
| 299 | acpi_battery_extract_package(battery, package, &format, data, |
| 300 | "_BST"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 301 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 304 | end: |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 305 | kfree(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 307 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 310 | static int acpi_battery_get_alarm(struct acpi_battery *battery) |
| 311 | { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 312 | battery->update_time[ACPI_BATTERY_ALARM] = get_seconds(); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 313 | |
| 314 | return 0; |
| 315 | } |
| 316 | |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 317 | static int acpi_battery_set_alarm(struct acpi_battery *battery, |
| 318 | unsigned long alarm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 320 | acpi_status status = 0; |
| 321 | union acpi_object arg0 = { ACPI_TYPE_INTEGER }; |
| 322 | struct acpi_object_list arg_list = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 324 | battery->update_time[ACPI_BATTERY_ALARM] = get_seconds(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 326 | if (!acpi_battery_present(battery)) |
| 327 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 329 | if (!battery->flags.alarm_present) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 330 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
| 332 | arg0.integer.value = alarm; |
| 333 | |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 334 | status = |
| 335 | acpi_evaluate_object(acpi_battery_handle(battery), "_BTP", |
| 336 | &arg_list, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 338 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
| 340 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", (u32) alarm)); |
| 341 | |
| 342 | battery->alarm = alarm; |
| 343 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 344 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | } |
| 346 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 347 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 349 | int result = 0; |
| 350 | acpi_status status = AE_OK; |
| 351 | acpi_handle handle = NULL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 352 | struct acpi_battery_info *bif = battery->bif_data.pointer; |
| 353 | unsigned long alarm = battery->alarm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 355 | /* See if alarms are supported, and if so, set default */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 356 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 357 | status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle); |
| 358 | if (ACPI_SUCCESS(status)) { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 359 | battery->flags.alarm_present = 1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 360 | if (!alarm && bif) { |
| 361 | alarm = bif->design_capacity_warning; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 363 | result = acpi_battery_set_alarm(battery, alarm); |
| 364 | if (result) |
| 365 | goto end; |
| 366 | } else { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 367 | battery->flags.alarm_present = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | } |
| 369 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 370 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 372 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | } |
| 374 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 375 | static int acpi_battery_init_update(struct acpi_battery *battery) |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 376 | { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 377 | int result = 0; |
| 378 | |
| 379 | result = acpi_battery_get_status(battery); |
| 380 | if (result) |
| 381 | return result; |
| 382 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 383 | battery->flags.battery_present_prev = acpi_battery_present(battery); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 384 | |
| 385 | if (acpi_battery_present(battery)) { |
| 386 | result = acpi_battery_get_info(battery); |
| 387 | if (result) |
| 388 | return result; |
| 389 | result = acpi_battery_get_state(battery); |
| 390 | if (result) |
| 391 | return result; |
| 392 | |
| 393 | acpi_battery_init_alarm(battery); |
| 394 | } |
| 395 | |
| 396 | return result; |
| 397 | } |
| 398 | |
| 399 | static int acpi_battery_update(struct acpi_battery *battery, |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 400 | int update, int *update_result_ptr) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 401 | { |
| 402 | int result = 0; |
| 403 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
| 404 | |
| 405 | if (!acpi_battery_present(battery)) { |
| 406 | update = 1; |
| 407 | } |
| 408 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 409 | if (battery->flags.init_update) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 410 | result = acpi_battery_init_update(battery); |
| 411 | if (result) |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 412 | goto end; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 413 | update_result = ACPI_BATTERY_INIT_UPDATE; |
| 414 | } else if (update) { |
| 415 | result = acpi_battery_get_status(battery); |
| 416 | if (result) |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 417 | goto end; |
| 418 | if ((!battery->flags.battery_present_prev & acpi_battery_present(battery)) |
| 419 | || (battery->flags.battery_present_prev & !acpi_battery_present(battery))) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 420 | result = acpi_battery_init_update(battery); |
| 421 | if (result) |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 422 | goto end; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 423 | update_result = ACPI_BATTERY_INIT_UPDATE; |
| 424 | } else { |
| 425 | update_result = ACPI_BATTERY_EASY_UPDATE; |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | end: |
| 430 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 431 | battery->flags.init_update = (result != 0); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 432 | |
| 433 | *update_result_ptr = update_result; |
| 434 | |
| 435 | return result; |
| 436 | } |
| 437 | |
| 438 | static void acpi_battery_notify_update(struct acpi_battery *battery) |
| 439 | { |
| 440 | acpi_battery_get_status(battery); |
| 441 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 442 | if (battery->flags.init_update) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 443 | return; |
| 444 | } |
| 445 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 446 | if ((!battery->flags.battery_present_prev & |
| 447 | acpi_battery_present(battery)) || |
| 448 | (battery->flags.battery_present_prev & |
| 449 | !acpi_battery_present(battery))) { |
| 450 | battery->flags.init_update = 1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 451 | } else { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 452 | battery->flags.update[ACPI_BATTERY_INFO] = 1; |
| 453 | battery->flags.update[ACPI_BATTERY_STATE] = 1; |
| 454 | battery->flags.update[ACPI_BATTERY_ALARM] = 1; |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 455 | } |
| 456 | } |
| 457 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | /* -------------------------------------------------------------------------- |
| 459 | FS Interface (/proc) |
| 460 | -------------------------------------------------------------------------- */ |
| 461 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 462 | static struct proc_dir_entry *acpi_battery_dir; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 463 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 464 | static int acpi_battery_print_info(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 466 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | struct acpi_battery_info *bif = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 468 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 470 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | goto end; |
| 472 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 473 | if (acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | seq_printf(seq, "present: yes\n"); |
| 475 | else { |
| 476 | seq_printf(seq, "present: no\n"); |
| 477 | goto end; |
| 478 | } |
| 479 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 480 | bif = battery->bif_data.pointer; |
| 481 | if (!bif) { |
| 482 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BIF buffer is NULL")); |
| 483 | result = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | goto end; |
| 485 | } |
| 486 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 487 | /* Battery Units */ |
| 488 | |
| 489 | units = acpi_battery_power_units(battery); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 490 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | if (bif->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 492 | seq_printf(seq, "design capacity: unknown\n"); |
| 493 | else |
| 494 | seq_printf(seq, "design capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 495 | (u32) bif->design_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
| 497 | if (bif->last_full_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 498 | seq_printf(seq, "last full capacity: unknown\n"); |
| 499 | else |
| 500 | seq_printf(seq, "last full capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 501 | (u32) bif->last_full_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
| 503 | switch ((u32) bif->battery_technology) { |
| 504 | case 0: |
| 505 | seq_printf(seq, "battery technology: non-rechargeable\n"); |
| 506 | break; |
| 507 | case 1: |
| 508 | seq_printf(seq, "battery technology: rechargeable\n"); |
| 509 | break; |
| 510 | default: |
| 511 | seq_printf(seq, "battery technology: unknown\n"); |
| 512 | break; |
| 513 | } |
| 514 | |
| 515 | if (bif->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 516 | seq_printf(seq, "design voltage: unknown\n"); |
| 517 | else |
| 518 | seq_printf(seq, "design voltage: %d mV\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 519 | (u32) bif->design_voltage); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 520 | seq_printf(seq, "design capacity warning: %d %sh\n", |
| 521 | (u32) bif->design_capacity_warning, units); |
| 522 | seq_printf(seq, "design capacity low: %d %sh\n", |
| 523 | (u32) bif->design_capacity_low, units); |
| 524 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
| 525 | (u32) bif->battery_capacity_granularity_1, units); |
| 526 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
| 527 | (u32) bif->battery_capacity_granularity_2, units); |
| 528 | seq_printf(seq, "model number: %s\n", bif->model_number); |
| 529 | seq_printf(seq, "serial number: %s\n", bif->serial_number); |
| 530 | seq_printf(seq, "battery type: %s\n", bif->battery_type); |
| 531 | seq_printf(seq, "OEM info: %s\n", bif->oem_info); |
| 532 | |
| 533 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 535 | if (result) |
| 536 | seq_printf(seq, "ERROR: Unable to read battery info\n"); |
| 537 | |
| 538 | return result; |
| 539 | } |
| 540 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 541 | static int acpi_battery_print_state(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 543 | struct acpi_battery *battery = seq->private; |
Vladimir Lebedev | a1f0eff | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 544 | struct acpi_battery_state *bst = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 545 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 547 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | goto end; |
| 549 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 550 | if (acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | seq_printf(seq, "present: yes\n"); |
| 552 | else { |
| 553 | seq_printf(seq, "present: no\n"); |
| 554 | goto end; |
| 555 | } |
| 556 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 557 | bst = battery->bst_data.pointer; |
| 558 | if (!bst) { |
| 559 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BST buffer is NULL")); |
| 560 | result = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | goto end; |
| 562 | } |
| 563 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 564 | /* Battery Units */ |
| 565 | |
| 566 | units = acpi_battery_power_units(battery); |
| 567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | if (!(bst->state & 0x04)) |
| 569 | seq_printf(seq, "capacity state: ok\n"); |
| 570 | else |
| 571 | seq_printf(seq, "capacity state: critical\n"); |
| 572 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 573 | if ((bst->state & 0x01) && (bst->state & 0x02)) { |
| 574 | seq_printf(seq, |
| 575 | "charging state: charging/discharging\n"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 576 | } else if (bst->state & 0x01) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | seq_printf(seq, "charging state: discharging\n"); |
| 578 | else if (bst->state & 0x02) |
| 579 | seq_printf(seq, "charging state: charging\n"); |
| 580 | else { |
| 581 | seq_printf(seq, "charging state: charged\n"); |
| 582 | } |
| 583 | |
| 584 | if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN) |
| 585 | seq_printf(seq, "present rate: unknown\n"); |
| 586 | else |
| 587 | seq_printf(seq, "present rate: %d %s\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 588 | (u32) bst->present_rate, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
| 590 | if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 591 | seq_printf(seq, "remaining capacity: unknown\n"); |
| 592 | else |
| 593 | seq_printf(seq, "remaining capacity: %d %sh\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 594 | (u32) bst->remaining_capacity, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
| 596 | if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 597 | seq_printf(seq, "present voltage: unknown\n"); |
| 598 | else |
| 599 | seq_printf(seq, "present voltage: %d mV\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 600 | (u32) bst->present_voltage); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 602 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 604 | if (result) { |
| 605 | seq_printf(seq, "ERROR: Unable to read battery state\n"); |
| 606 | } |
| 607 | |
| 608 | return result; |
| 609 | } |
| 610 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 611 | static int acpi_battery_print_alarm(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 613 | struct acpi_battery *battery = seq->private; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 614 | char *units = "?"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 616 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | goto end; |
| 618 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 619 | if (!acpi_battery_present(battery)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | seq_printf(seq, "present: no\n"); |
| 621 | goto end; |
| 622 | } |
| 623 | |
| 624 | /* Battery Units */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 625 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 626 | units = acpi_battery_power_units(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
| 628 | seq_printf(seq, "alarm: "); |
| 629 | if (!battery->alarm) |
| 630 | seq_printf(seq, "unsupported\n"); |
| 631 | else |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 632 | seq_printf(seq, "%lu %sh\n", battery->alarm, units); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 634 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 635 | |
| 636 | if (result) |
| 637 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); |
| 638 | |
| 639 | return result; |
| 640 | } |
| 641 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | static ssize_t |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 643 | acpi_battery_write_alarm(struct file *file, |
| 644 | const char __user * buffer, |
| 645 | size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 647 | int result = 0; |
| 648 | char alarm_string[12] = { '\0' }; |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 649 | struct seq_file *m = file->private_data; |
| 650 | struct acpi_battery *battery = m->private; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 651 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | if (!battery || (count > sizeof(alarm_string) - 1)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 654 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 656 | mutex_lock(&battery->mutex); |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 657 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 658 | result = acpi_battery_update(battery, 1, &update_result); |
| 659 | if (result) { |
| 660 | result = -ENODEV; |
| 661 | goto end; |
| 662 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 664 | if (!acpi_battery_present(battery)) { |
| 665 | result = -ENODEV; |
| 666 | goto end; |
| 667 | } |
| 668 | |
| 669 | if (copy_from_user(alarm_string, buffer, count)) { |
| 670 | result = -EFAULT; |
| 671 | goto end; |
| 672 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 673 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | alarm_string[count] = '\0'; |
| 675 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 676 | result = acpi_battery_set_alarm(battery, |
| 677 | simple_strtoul(alarm_string, NULL, 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 679 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 681 | end: |
| 682 | |
| 683 | acpi_battery_check_result(battery, result); |
| 684 | |
| 685 | if (!result) |
| 686 | result = count; |
| 687 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 688 | mutex_unlock(&battery->mutex); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 689 | |
| 690 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | } |
| 692 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 693 | typedef int(*print_func)(struct seq_file *seq, int result); |
| 694 | typedef int(*get_func)(struct acpi_battery *battery); |
| 695 | |
| 696 | static struct acpi_read_mux { |
| 697 | print_func print; |
| 698 | get_func get; |
| 699 | } acpi_read_funcs[ACPI_BATTERY_NUMFILES] = { |
| 700 | {.get = acpi_battery_get_info, .print = acpi_battery_print_info}, |
| 701 | {.get = acpi_battery_get_state, .print = acpi_battery_print_state}, |
| 702 | {.get = acpi_battery_get_alarm, .print = acpi_battery_print_alarm}, |
| 703 | }; |
| 704 | |
| 705 | static int acpi_battery_read(int fid, struct seq_file *seq) |
| 706 | { |
| 707 | struct acpi_battery *battery = seq->private; |
| 708 | int result = 0; |
| 709 | int update_result = ACPI_BATTERY_NONE_UPDATE; |
| 710 | int update = 0; |
| 711 | |
| 712 | mutex_lock(&battery->mutex); |
| 713 | |
| 714 | update = (get_seconds() - battery->update_time[fid] >= update_time); |
| 715 | update = (update | battery->flags.update[fid]); |
| 716 | |
| 717 | result = acpi_battery_update(battery, update, &update_result); |
| 718 | if (result) |
| 719 | goto end; |
| 720 | |
| 721 | if (update_result == ACPI_BATTERY_EASY_UPDATE) { |
| 722 | result = acpi_read_funcs[fid].get(battery); |
| 723 | if (result) |
| 724 | goto end; |
| 725 | } |
| 726 | |
| 727 | end: |
| 728 | result = acpi_read_funcs[fid].print(seq, result); |
| 729 | acpi_battery_check_result(battery, result); |
| 730 | battery->flags.update[fid] = result; |
| 731 | mutex_unlock(&battery->mutex); |
| 732 | return result; |
| 733 | } |
| 734 | |
| 735 | static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
| 736 | { |
| 737 | return acpi_battery_read(ACPI_BATTERY_INFO, seq); |
| 738 | } |
| 739 | |
| 740 | static int acpi_battery_read_state(struct seq_file *seq, void *offset) |
| 741 | { |
| 742 | return acpi_battery_read(ACPI_BATTERY_STATE, seq); |
| 743 | } |
| 744 | |
| 745 | static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) |
| 746 | { |
| 747 | return acpi_battery_read(ACPI_BATTERY_ALARM, seq); |
| 748 | } |
| 749 | |
| 750 | static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) |
| 751 | { |
| 752 | return single_open(file, acpi_battery_read_info, PDE(inode)->data); |
| 753 | } |
| 754 | |
| 755 | static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) |
| 756 | { |
| 757 | return single_open(file, acpi_battery_read_state, PDE(inode)->data); |
| 758 | } |
| 759 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) |
| 761 | { |
| 762 | return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); |
| 763 | } |
| 764 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 765 | static struct battery_file { |
| 766 | struct file_operations ops; |
| 767 | mode_t mode; |
| 768 | char *name; |
| 769 | } acpi_battery_file[] = { |
| 770 | { |
| 771 | .name = "info", |
| 772 | .mode = S_IRUGO, |
| 773 | .ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 774 | .open = acpi_battery_info_open_fs, |
| 775 | .read = seq_read, |
| 776 | .llseek = seq_lseek, |
| 777 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | .owner = THIS_MODULE, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 779 | }, |
| 780 | }, |
| 781 | { |
| 782 | .name = "state", |
| 783 | .mode = S_IRUGO, |
| 784 | .ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 785 | .open = acpi_battery_state_open_fs, |
| 786 | .read = seq_read, |
| 787 | .llseek = seq_lseek, |
| 788 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | .owner = THIS_MODULE, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 790 | }, |
| 791 | }, |
| 792 | { |
| 793 | .name = "alarm", |
| 794 | .mode = S_IFREG | S_IRUGO | S_IWUSR, |
| 795 | .ops = { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 796 | .open = acpi_battery_alarm_open_fs, |
| 797 | .read = seq_read, |
| 798 | .write = acpi_battery_write_alarm, |
| 799 | .llseek = seq_lseek, |
| 800 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | .owner = THIS_MODULE, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 802 | }, |
| 803 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | }; |
| 805 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 806 | static int acpi_battery_add_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 808 | struct proc_dir_entry *entry = NULL; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 809 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | if (!acpi_device_dir(device)) { |
| 812 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 813 | acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | if (!acpi_device_dir(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 815 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 817 | } |
| 818 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 819 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { |
| 820 | entry = create_proc_entry(acpi_battery_file[i].name, |
| 821 | acpi_battery_file[i].mode, acpi_device_dir(device)); |
| 822 | if (!entry) |
| 823 | return -ENODEV; |
| 824 | else { |
| 825 | entry->proc_fops = &acpi_battery_file[i].ops; |
| 826 | entry->data = acpi_driver_data(device); |
| 827 | entry->owner = THIS_MODULE; |
| 828 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | } |
| 830 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 831 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } |
| 833 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 834 | static int acpi_battery_remove_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 836 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | if (acpi_device_dir(device)) { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 838 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { |
| 839 | remove_proc_entry(acpi_battery_file[i].name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | acpi_device_dir(device)); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 841 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
| 843 | acpi_device_dir(device) = NULL; |
| 844 | } |
| 845 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 846 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | } |
| 848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | /* -------------------------------------------------------------------------- |
| 850 | Driver Interface |
| 851 | -------------------------------------------------------------------------- */ |
| 852 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 853 | static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 855 | struct acpi_battery *battery = data; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 856 | struct acpi_device *device = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 859 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 861 | device = battery->device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | |
| 863 | switch (event) { |
| 864 | case ACPI_BATTERY_NOTIFY_STATUS: |
| 865 | case ACPI_BATTERY_NOTIFY_INFO: |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 866 | case ACPI_NOTIFY_BUS_CHECK: |
| 867 | case ACPI_NOTIFY_DEVICE_CHECK: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 868 | device = battery->device; |
| 869 | acpi_battery_notify_update(battery); |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 870 | acpi_bus_generate_event(device, event, |
| 871 | acpi_battery_present(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | break; |
| 873 | default: |
| 874 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 875 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | break; |
| 877 | } |
| 878 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 879 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | } |
| 881 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 882 | static int acpi_battery_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 884 | int result = 0; |
| 885 | acpi_status status = 0; |
| 886 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 889 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 891 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 893 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 895 | mutex_init(&battery->mutex); |
| 896 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 897 | mutex_lock(&battery->mutex); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 898 | |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 899 | battery->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
| 901 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); |
| 902 | acpi_driver_data(device) = battery; |
| 903 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 904 | result = acpi_battery_get_status(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | if (result) |
| 906 | goto end; |
| 907 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 908 | battery->flags.init_update = 1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 909 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | result = acpi_battery_add_fs(device); |
| 911 | if (result) |
| 912 | goto end; |
| 913 | |
Patrick Mochel | 3b073ec | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 914 | status = acpi_install_notify_handler(device->handle, |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 915 | ACPI_ALL_NOTIFY, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 916 | acpi_battery_notify, battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | if (ACPI_FAILURE(status)) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 918 | ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | result = -ENODEV; |
| 920 | goto end; |
| 921 | } |
| 922 | |
| 923 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 924 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
| 925 | device->status.battery_present ? "present" : "absent"); |
| 926 | |
| 927 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 928 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | if (result) { |
| 930 | acpi_battery_remove_fs(device); |
| 931 | kfree(battery); |
| 932 | } |
| 933 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 934 | mutex_unlock(&battery->mutex); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 935 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 936 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | } |
| 938 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 939 | static int acpi_battery_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 941 | acpi_status status = 0; |
| 942 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 945 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 947 | battery = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 949 | mutex_lock(&battery->mutex); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 950 | |
Patrick Mochel | 3b073ec | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 951 | status = acpi_remove_notify_handler(device->handle, |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 952 | ACPI_ALL_NOTIFY, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 953 | acpi_battery_notify); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
| 955 | acpi_battery_remove_fs(device); |
| 956 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 957 | kfree(battery->bif_data.pointer); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 958 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 959 | kfree(battery->bst_data.pointer); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 960 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 961 | mutex_unlock(&battery->mutex); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 962 | |
| 963 | mutex_destroy(&battery->mutex); |
| 964 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | kfree(battery); |
| 966 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 967 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | } |
| 969 | |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 970 | /* this is needed to learn about changes made in suspended state */ |
Patrick Mochel | 5d9464a | 2006-12-07 20:56:27 +0800 | [diff] [blame] | 971 | static int acpi_battery_resume(struct acpi_device *device) |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 972 | { |
| 973 | struct acpi_battery *battery; |
| 974 | |
| 975 | if (!device) |
| 976 | return -EINVAL; |
| 977 | |
| 978 | battery = device->driver_data; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 979 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame^] | 980 | battery->flags.init_update = 1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 981 | |
| 982 | return 0; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 983 | } |
| 984 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 985 | static int __init acpi_battery_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | { |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 987 | int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 989 | if (acpi_disabled) |
| 990 | return -ENODEV; |
| 991 | |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 992 | acpi_battery_dir = acpi_lock_battery_dir(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | if (!acpi_battery_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 994 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | |
| 996 | result = acpi_bus_register_driver(&acpi_battery_driver); |
| 997 | if (result < 0) { |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 998 | acpi_unlock_battery_dir(acpi_battery_dir); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 999 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } |
| 1001 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1002 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | } |
| 1004 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1005 | static void __exit acpi_battery_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | acpi_bus_unregister_driver(&acpi_battery_driver); |
| 1008 | |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 1009 | acpi_unlock_battery_dir(acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1011 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | } |
| 1013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | module_init(acpi_battery_init); |
| 1015 | module_exit(acpi_battery_exit); |