Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 2 | * battery.c - ACPI Battery Driver (Revision: 2.0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 4 | * Copyright (C) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
| 5 | * Copyright (C) 2004-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
| 7 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| 8 | * |
| 9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or (at |
| 14 | * your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, but |
| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License along |
| 22 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 23 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 24 | * |
| 25 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 26 | */ |
| 27 | |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/types.h> |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 32 | #include <linux/jiffies.h> |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 33 | #include <linux/async.h> |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 34 | |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 35 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/proc_fs.h> |
| 37 | #include <linux/seq_file.h> |
| 38 | #include <asm/uaccess.h> |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 39 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | #include <acpi/acpi_bus.h> |
| 42 | #include <acpi/acpi_drivers.h> |
| 43 | |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 44 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 45 | #include <linux/power_supply.h> |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 46 | #endif |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #define ACPI_BATTERY_CLASS "battery" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define ACPI_BATTERY_NOTIFY_STATUS 0x80 |
| 53 | #define ACPI_BATTERY_NOTIFY_INFO 0x81 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 56 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 57 | ACPI_MODULE_NAME("battery"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 59 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 60 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 61 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | MODULE_LICENSE("GPL"); |
| 63 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 64 | static unsigned int cache_time = 1000; |
| 65 | module_param(cache_time, uint, 0644); |
| 66 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 67 | |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 68 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 69 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
| 70 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); |
| 71 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 72 | enum acpi_battery_files { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 73 | info_tag = 0, |
| 74 | state_tag, |
| 75 | alarm_tag, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 76 | ACPI_BATTERY_NUMFILES, |
| 77 | }; |
| 78 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 79 | #endif |
| 80 | |
| 81 | static const struct acpi_device_id battery_device_ids[] = { |
| 82 | {"PNP0C0A", 0}, |
| 83 | {"", 0}, |
| 84 | }; |
| 85 | |
| 86 | MODULE_DEVICE_TABLE(acpi, battery_device_ids); |
| 87 | |
| 88 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 89 | struct acpi_battery { |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 90 | struct mutex lock; |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 91 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 92 | struct power_supply bat; |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 93 | #endif |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 94 | struct acpi_device *device; |
| 95 | unsigned long update_time; |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 96 | int rate_now; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 97 | int capacity_now; |
| 98 | int voltage_now; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 99 | int design_capacity; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 100 | int full_charge_capacity; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 101 | int technology; |
| 102 | int design_voltage; |
| 103 | int design_capacity_warning; |
| 104 | int design_capacity_low; |
| 105 | int capacity_granularity_1; |
| 106 | int capacity_granularity_2; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 107 | int alarm; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 108 | char model_number[32]; |
| 109 | char serial_number[32]; |
| 110 | char type[32]; |
| 111 | char oem_info[32]; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 112 | int state; |
| 113 | int power_unit; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 114 | u8 alarm_present; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | }; |
| 116 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 117 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat); |
| 118 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 119 | inline int acpi_battery_present(struct acpi_battery *battery) |
| 120 | { |
| 121 | return battery->device->status.battery_present; |
| 122 | } |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 123 | |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 124 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 125 | static int acpi_battery_technology(struct acpi_battery *battery) |
| 126 | { |
| 127 | if (!strcasecmp("NiCd", battery->type)) |
| 128 | return POWER_SUPPLY_TECHNOLOGY_NiCd; |
| 129 | if (!strcasecmp("NiMH", battery->type)) |
| 130 | return POWER_SUPPLY_TECHNOLOGY_NiMH; |
| 131 | if (!strcasecmp("LION", battery->type)) |
| 132 | return POWER_SUPPLY_TECHNOLOGY_LION; |
Andrey Borzenkov | ad40e68 | 2007-11-10 20:02:49 +0300 | [diff] [blame] | 133 | if (!strncasecmp("LI-ION", battery->type, 6)) |
Alexey Starikovskiy | 0bde7ee | 2007-10-28 15:33:10 +0300 | [diff] [blame] | 134 | return POWER_SUPPLY_TECHNOLOGY_LION; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 135 | if (!strcasecmp("LiP", battery->type)) |
| 136 | return POWER_SUPPLY_TECHNOLOGY_LIPO; |
| 137 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; |
| 138 | } |
| 139 | |
Alexey Starikovskiy | 9104476 | 2007-11-13 12:23:06 +0300 | [diff] [blame] | 140 | static int acpi_battery_get_state(struct acpi_battery *battery); |
Alexey Starikovskiy | b19073a | 2007-10-25 17:10:47 -0400 | [diff] [blame] | 141 | |
Richard Hughes | 56f382a | 2009-01-25 15:05:50 +0000 | [diff] [blame] | 142 | static int acpi_battery_is_charged(struct acpi_battery *battery) |
| 143 | { |
| 144 | /* either charging or discharging */ |
| 145 | if (battery->state != 0) |
| 146 | return 0; |
| 147 | |
| 148 | /* battery not reporting charge */ |
| 149 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN || |
| 150 | battery->capacity_now == 0) |
| 151 | return 0; |
| 152 | |
| 153 | /* good batteries update full_charge as the batteries degrade */ |
| 154 | if (battery->full_charge_capacity == battery->capacity_now) |
| 155 | return 1; |
| 156 | |
| 157 | /* fallback to using design values for broken batteries */ |
| 158 | if (battery->design_capacity == battery->capacity_now) |
| 159 | return 1; |
| 160 | |
| 161 | /* we don't do any sort of metric based on percentages */ |
| 162 | return 0; |
| 163 | } |
| 164 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 165 | static int acpi_battery_get_property(struct power_supply *psy, |
| 166 | enum power_supply_property psp, |
| 167 | union power_supply_propval *val) |
| 168 | { |
| 169 | struct acpi_battery *battery = to_acpi_battery(psy); |
| 170 | |
Alexey Starikovskiy | 9104476 | 2007-11-13 12:23:06 +0300 | [diff] [blame] | 171 | if (acpi_battery_present(battery)) { |
| 172 | /* run battery update only if it is present */ |
| 173 | acpi_battery_get_state(battery); |
| 174 | } else if (psp != POWER_SUPPLY_PROP_PRESENT) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 175 | return -ENODEV; |
| 176 | switch (psp) { |
| 177 | case POWER_SUPPLY_PROP_STATUS: |
| 178 | if (battery->state & 0x01) |
| 179 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
| 180 | else if (battery->state & 0x02) |
| 181 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
Richard Hughes | 56f382a | 2009-01-25 15:05:50 +0000 | [diff] [blame] | 182 | else if (acpi_battery_is_charged(battery)) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 183 | val->intval = POWER_SUPPLY_STATUS_FULL; |
Roland Dreier | 4c41d3a | 2007-11-07 15:09:09 -0800 | [diff] [blame] | 184 | else |
| 185 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 186 | break; |
| 187 | case POWER_SUPPLY_PROP_PRESENT: |
| 188 | val->intval = acpi_battery_present(battery); |
| 189 | break; |
| 190 | case POWER_SUPPLY_PROP_TECHNOLOGY: |
| 191 | val->intval = acpi_battery_technology(battery); |
| 192 | break; |
| 193 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
| 194 | val->intval = battery->design_voltage * 1000; |
| 195 | break; |
| 196 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| 197 | val->intval = battery->voltage_now * 1000; |
| 198 | break; |
| 199 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 200 | case POWER_SUPPLY_PROP_POWER_NOW: |
| 201 | val->intval = battery->rate_now * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 202 | break; |
| 203 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: |
| 204 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: |
| 205 | val->intval = battery->design_capacity * 1000; |
| 206 | break; |
| 207 | case POWER_SUPPLY_PROP_CHARGE_FULL: |
| 208 | case POWER_SUPPLY_PROP_ENERGY_FULL: |
| 209 | val->intval = battery->full_charge_capacity * 1000; |
| 210 | break; |
| 211 | case POWER_SUPPLY_PROP_CHARGE_NOW: |
| 212 | case POWER_SUPPLY_PROP_ENERGY_NOW: |
| 213 | val->intval = battery->capacity_now * 1000; |
| 214 | break; |
| 215 | case POWER_SUPPLY_PROP_MODEL_NAME: |
| 216 | val->strval = battery->model_number; |
| 217 | break; |
| 218 | case POWER_SUPPLY_PROP_MANUFACTURER: |
| 219 | val->strval = battery->oem_info; |
| 220 | break; |
maximilian attems | 7c2670b | 2008-01-22 18:46:50 +0100 | [diff] [blame] | 221 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
| 222 | val->strval = battery->serial_number; |
| 223 | break; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 224 | default: |
| 225 | return -EINVAL; |
| 226 | } |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | static enum power_supply_property charge_battery_props[] = { |
| 231 | POWER_SUPPLY_PROP_STATUS, |
| 232 | POWER_SUPPLY_PROP_PRESENT, |
| 233 | POWER_SUPPLY_PROP_TECHNOLOGY, |
| 234 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 235 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 236 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 237 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, |
| 238 | POWER_SUPPLY_PROP_CHARGE_FULL, |
| 239 | POWER_SUPPLY_PROP_CHARGE_NOW, |
| 240 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 241 | POWER_SUPPLY_PROP_MANUFACTURER, |
maximilian attems | 7c2670b | 2008-01-22 18:46:50 +0100 | [diff] [blame] | 242 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 243 | }; |
| 244 | |
| 245 | static enum power_supply_property energy_battery_props[] = { |
| 246 | POWER_SUPPLY_PROP_STATUS, |
| 247 | POWER_SUPPLY_PROP_PRESENT, |
| 248 | POWER_SUPPLY_PROP_TECHNOLOGY, |
| 249 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 250 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 251 | POWER_SUPPLY_PROP_CURRENT_NOW, |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 252 | POWER_SUPPLY_PROP_POWER_NOW, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 253 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, |
| 254 | POWER_SUPPLY_PROP_ENERGY_FULL, |
| 255 | POWER_SUPPLY_PROP_ENERGY_NOW, |
| 256 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 257 | POWER_SUPPLY_PROP_MANUFACTURER, |
maximilian attems | 7c2670b | 2008-01-22 18:46:50 +0100 | [diff] [blame] | 258 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 259 | }; |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 260 | #endif |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 261 | |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 262 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 263 | inline char *acpi_battery_units(struct acpi_battery *battery) |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 264 | { |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 265 | return (battery->power_unit)?"mA":"mW"; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 266 | } |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 267 | #endif |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | /* -------------------------------------------------------------------------- |
| 270 | Battery Management |
| 271 | -------------------------------------------------------------------------- */ |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 272 | struct acpi_offsets { |
| 273 | size_t offset; /* offset inside struct acpi_sbs_battery */ |
| 274 | u8 mode; /* int or string? */ |
| 275 | }; |
| 276 | |
| 277 | static struct acpi_offsets state_offsets[] = { |
| 278 | {offsetof(struct acpi_battery, state), 0}, |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 279 | {offsetof(struct acpi_battery, rate_now), 0}, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 280 | {offsetof(struct acpi_battery, capacity_now), 0}, |
| 281 | {offsetof(struct acpi_battery, voltage_now), 0}, |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 282 | }; |
| 283 | |
| 284 | static struct acpi_offsets info_offsets[] = { |
| 285 | {offsetof(struct acpi_battery, power_unit), 0}, |
| 286 | {offsetof(struct acpi_battery, design_capacity), 0}, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 287 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 288 | {offsetof(struct acpi_battery, technology), 0}, |
| 289 | {offsetof(struct acpi_battery, design_voltage), 0}, |
| 290 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, |
| 291 | {offsetof(struct acpi_battery, design_capacity_low), 0}, |
| 292 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, |
| 293 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, |
| 294 | {offsetof(struct acpi_battery, model_number), 1}, |
| 295 | {offsetof(struct acpi_battery, serial_number), 1}, |
| 296 | {offsetof(struct acpi_battery, type), 1}, |
| 297 | {offsetof(struct acpi_battery, oem_info), 1}, |
| 298 | }; |
| 299 | |
| 300 | static int extract_package(struct acpi_battery *battery, |
| 301 | union acpi_object *package, |
| 302 | struct acpi_offsets *offsets, int num) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 303 | { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 304 | int i; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 305 | union acpi_object *element; |
| 306 | if (package->type != ACPI_TYPE_PACKAGE) |
| 307 | return -EFAULT; |
| 308 | for (i = 0; i < num; ++i) { |
| 309 | if (package->package.count <= i) |
| 310 | return -EFAULT; |
| 311 | element = &package->package.elements[i]; |
| 312 | if (offsets[i].mode) { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 313 | u8 *ptr = (u8 *)battery + offsets[i].offset; |
| 314 | if (element->type == ACPI_TYPE_STRING || |
| 315 | element->type == ACPI_TYPE_BUFFER) |
| 316 | strncpy(ptr, element->string.pointer, 32); |
| 317 | else if (element->type == ACPI_TYPE_INTEGER) { |
| 318 | strncpy(ptr, (u8 *)&element->integer.value, |
| 319 | sizeof(acpi_integer)); |
| 320 | ptr[sizeof(acpi_integer)] = 0; |
Alexey Starikovskiy | b8a1bdb | 2008-03-17 22:37:42 -0400 | [diff] [blame] | 321 | } else |
| 322 | *ptr = 0; /* don't have value */ |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 323 | } else { |
Alexey Starikovskiy | b8a1bdb | 2008-03-17 22:37:42 -0400 | [diff] [blame] | 324 | int *x = (int *)((u8 *)battery + offsets[i].offset); |
| 325 | *x = (element->type == ACPI_TYPE_INTEGER) ? |
| 326 | element->integer.value : -1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 327 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 328 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | static int acpi_battery_get_status(struct acpi_battery *battery) |
| 333 | { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 334 | if (acpi_bus_get_status(battery->device)) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 335 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
| 336 | return -ENODEV; |
| 337 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 338 | return 0; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | static int acpi_battery_get_info(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 343 | int result = -EFAULT; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 344 | acpi_status status = 0; |
| 345 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 347 | if (!acpi_battery_present(battery)) |
| 348 | return 0; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 349 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 350 | status = acpi_evaluate_object(battery->device->handle, "_BIF", |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 351 | NULL, &buffer); |
| 352 | mutex_unlock(&battery->lock); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 355 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 356 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 358 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 359 | result = extract_package(battery, buffer.pointer, |
| 360 | info_offsets, ARRAY_SIZE(info_offsets)); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 361 | kfree(buffer.pointer); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 362 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | } |
| 364 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 365 | static int acpi_battery_get_state(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 367 | int result = 0; |
| 368 | acpi_status status = 0; |
| 369 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 371 | if (!acpi_battery_present(battery)) |
| 372 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 374 | if (battery->update_time && |
| 375 | time_before(jiffies, battery->update_time + |
| 376 | msecs_to_jiffies(cache_time))) |
| 377 | return 0; |
| 378 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 379 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 380 | status = acpi_evaluate_object(battery->device->handle, "_BST", |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 381 | NULL, &buffer); |
| 382 | mutex_unlock(&battery->lock); |
Len Brown | 5b31d89 | 2007-08-15 00:19:26 -0400 | [diff] [blame] | 383 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 385 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 386 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 388 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 389 | result = extract_package(battery, buffer.pointer, |
| 390 | state_offsets, ARRAY_SIZE(state_offsets)); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 391 | battery->update_time = jiffies; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 392 | kfree(buffer.pointer); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 393 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 396 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 398 | acpi_status status = 0; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 399 | union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER }; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 400 | struct acpi_object_list arg_list = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 402 | if (!acpi_battery_present(battery)|| !battery->alarm_present) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 403 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 405 | arg0.integer.value = battery->alarm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 407 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 408 | status = acpi_evaluate_object(battery->device->handle, "_BTP", |
| 409 | &arg_list, NULL); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 410 | mutex_unlock(&battery->lock); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 413 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 415 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm)); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 416 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | } |
| 418 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 419 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 421 | acpi_status status = AE_OK; |
| 422 | acpi_handle handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 424 | /* See if alarms are supported, and if so, set default */ |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 425 | status = acpi_get_handle(battery->device->handle, "_BTP", &handle); |
| 426 | if (ACPI_FAILURE(status)) { |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 427 | battery->alarm_present = 0; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 428 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 430 | battery->alarm_present = 1; |
| 431 | if (!battery->alarm) |
| 432 | battery->alarm = battery->design_capacity_warning; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 433 | return acpi_battery_set_alarm(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
| 435 | |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 436 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 437 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
| 438 | struct device_attribute *attr, |
| 439 | char *buf) |
| 440 | { |
| 441 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); |
| 442 | return sprintf(buf, "%d\n", battery->alarm * 1000); |
| 443 | } |
| 444 | |
| 445 | static ssize_t acpi_battery_alarm_store(struct device *dev, |
| 446 | struct device_attribute *attr, |
| 447 | const char *buf, size_t count) |
| 448 | { |
| 449 | unsigned long x; |
| 450 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); |
| 451 | if (sscanf(buf, "%ld\n", &x) == 1) |
| 452 | battery->alarm = x/1000; |
| 453 | if (acpi_battery_present(battery)) |
| 454 | acpi_battery_set_alarm(battery); |
| 455 | return count; |
| 456 | } |
| 457 | |
| 458 | static struct device_attribute alarm_attr = { |
Parag Warudkar | 01e8ef1 | 2008-10-18 20:28:50 -0700 | [diff] [blame] | 459 | .attr = {.name = "alarm", .mode = 0644}, |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 460 | .show = acpi_battery_alarm_show, |
| 461 | .store = acpi_battery_alarm_store, |
| 462 | }; |
| 463 | |
| 464 | static int sysfs_add_battery(struct acpi_battery *battery) |
| 465 | { |
| 466 | int result; |
| 467 | |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 468 | if (battery->power_unit) { |
| 469 | battery->bat.properties = charge_battery_props; |
| 470 | battery->bat.num_properties = |
| 471 | ARRAY_SIZE(charge_battery_props); |
| 472 | } else { |
| 473 | battery->bat.properties = energy_battery_props; |
| 474 | battery->bat.num_properties = |
| 475 | ARRAY_SIZE(energy_battery_props); |
| 476 | } |
| 477 | |
| 478 | battery->bat.name = acpi_device_bid(battery->device); |
| 479 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; |
| 480 | battery->bat.get_property = acpi_battery_get_property; |
| 481 | |
| 482 | result = power_supply_register(&battery->device->dev, &battery->bat); |
| 483 | if (result) |
| 484 | return result; |
| 485 | return device_create_file(battery->bat.dev, &alarm_attr); |
| 486 | } |
| 487 | |
| 488 | static void sysfs_remove_battery(struct acpi_battery *battery) |
| 489 | { |
| 490 | if (!battery->bat.dev) |
| 491 | return; |
| 492 | device_remove_file(battery->bat.dev, &alarm_attr); |
| 493 | power_supply_unregister(&battery->bat); |
Alexey Starikovskiy | 9104476 | 2007-11-13 12:23:06 +0300 | [diff] [blame] | 494 | battery->bat.dev = NULL; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 495 | } |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 496 | #endif |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 497 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 498 | static int acpi_battery_update(struct acpi_battery *battery) |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 499 | { |
Alexey Starikovskiy | 50b1785 | 2008-12-23 02:44:54 +0300 | [diff] [blame] | 500 | int result, old_present = acpi_battery_present(battery); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 501 | result = acpi_battery_get_status(battery); |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 502 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 503 | return result; |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 504 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 505 | if (!acpi_battery_present(battery)) { |
| 506 | sysfs_remove_battery(battery); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 507 | battery->update_time = 0; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 508 | return 0; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 509 | } |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 510 | #endif |
Alexey Starikovskiy | 50b1785 | 2008-12-23 02:44:54 +0300 | [diff] [blame] | 511 | if (!battery->update_time || |
| 512 | old_present != acpi_battery_present(battery)) { |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 513 | result = acpi_battery_get_info(battery); |
| 514 | if (result) |
| 515 | return result; |
| 516 | acpi_battery_init_alarm(battery); |
| 517 | } |
| 518 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 519 | if (!battery->bat.dev) |
| 520 | sysfs_add_battery(battery); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 521 | #endif |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 522 | return acpi_battery_get_state(battery); |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 523 | } |
| 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | /* -------------------------------------------------------------------------- |
| 526 | FS Interface (/proc) |
| 527 | -------------------------------------------------------------------------- */ |
| 528 | |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 529 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 530 | static struct proc_dir_entry *acpi_battery_dir; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 531 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 532 | static int acpi_battery_print_info(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 534 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 536 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | goto end; |
| 538 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 539 | seq_printf(seq, "present: %s\n", |
| 540 | acpi_battery_present(battery)?"yes":"no"); |
| 541 | if (!acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | goto end; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 543 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | seq_printf(seq, "design capacity: unknown\n"); |
| 545 | else |
| 546 | seq_printf(seq, "design capacity: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 547 | battery->design_capacity, |
| 548 | acpi_battery_units(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 550 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | seq_printf(seq, "last full capacity: unknown\n"); |
| 552 | else |
| 553 | seq_printf(seq, "last full capacity: %d %sh\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 554 | battery->full_charge_capacity, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 555 | acpi_battery_units(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 557 | seq_printf(seq, "battery technology: %srechargeable\n", |
| 558 | (!battery->technology)?"non-":""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 560 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | seq_printf(seq, "design voltage: unknown\n"); |
| 562 | else |
| 563 | seq_printf(seq, "design voltage: %d mV\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 564 | battery->design_voltage); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 565 | seq_printf(seq, "design capacity warning: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 566 | battery->design_capacity_warning, |
| 567 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 568 | seq_printf(seq, "design capacity low: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 569 | battery->design_capacity_low, |
| 570 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 571 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 572 | battery->capacity_granularity_1, |
| 573 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 574 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 575 | battery->capacity_granularity_2, |
| 576 | acpi_battery_units(battery)); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 577 | seq_printf(seq, "model number: %s\n", battery->model_number); |
| 578 | seq_printf(seq, "serial number: %s\n", battery->serial_number); |
| 579 | seq_printf(seq, "battery type: %s\n", battery->type); |
| 580 | seq_printf(seq, "OEM info: %s\n", battery->oem_info); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 581 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 582 | if (result) |
| 583 | seq_printf(seq, "ERROR: Unable to read battery info\n"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 584 | return result; |
| 585 | } |
| 586 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 587 | static int acpi_battery_print_state(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 589 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 591 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | goto end; |
| 593 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 594 | seq_printf(seq, "present: %s\n", |
| 595 | acpi_battery_present(battery)?"yes":"no"); |
| 596 | if (!acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 599 | seq_printf(seq, "capacity state: %s\n", |
| 600 | (battery->state & 0x04)?"critical":"ok"); |
| 601 | if ((battery->state & 0x01) && (battery->state & 0x02)) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 602 | seq_printf(seq, |
| 603 | "charging state: charging/discharging\n"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 604 | else if (battery->state & 0x01) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | seq_printf(seq, "charging state: discharging\n"); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 606 | else if (battery->state & 0x02) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | seq_printf(seq, "charging state: charging\n"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 608 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | seq_printf(seq, "charging state: charged\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 611 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | seq_printf(seq, "present rate: unknown\n"); |
| 613 | else |
| 614 | seq_printf(seq, "present rate: %d %s\n", |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 615 | battery->rate_now, acpi_battery_units(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 617 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | seq_printf(seq, "remaining capacity: unknown\n"); |
| 619 | else |
| 620 | seq_printf(seq, "remaining capacity: %d %sh\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 621 | battery->capacity_now, acpi_battery_units(battery)); |
| 622 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | seq_printf(seq, "present voltage: unknown\n"); |
| 624 | else |
| 625 | seq_printf(seq, "present voltage: %d mV\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 626 | battery->voltage_now); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 627 | end: |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 628 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 629 | seq_printf(seq, "ERROR: Unable to read battery state\n"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 630 | |
| 631 | return result; |
| 632 | } |
| 633 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 634 | static int acpi_battery_print_alarm(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 636 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 638 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | goto end; |
| 640 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 641 | if (!acpi_battery_present(battery)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | seq_printf(seq, "present: no\n"); |
| 643 | goto end; |
| 644 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | seq_printf(seq, "alarm: "); |
| 646 | if (!battery->alarm) |
| 647 | seq_printf(seq, "unsupported\n"); |
| 648 | else |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 649 | seq_printf(seq, "%u %sh\n", battery->alarm, |
| 650 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 651 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 652 | if (result) |
| 653 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 654 | return result; |
| 655 | } |
| 656 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 657 | static ssize_t acpi_battery_write_alarm(struct file *file, |
| 658 | const char __user * buffer, |
| 659 | size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 661 | int result = 0; |
| 662 | char alarm_string[12] = { '\0' }; |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 663 | struct seq_file *m = file->private_data; |
| 664 | struct acpi_battery *battery = m->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | if (!battery || (count > sizeof(alarm_string) - 1)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 667 | return -EINVAL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 668 | if (!acpi_battery_present(battery)) { |
| 669 | result = -ENODEV; |
| 670 | goto end; |
| 671 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 672 | if (copy_from_user(alarm_string, buffer, count)) { |
| 673 | result = -EFAULT; |
| 674 | goto end; |
| 675 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | alarm_string[count] = '\0'; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 677 | battery->alarm = simple_strtol(alarm_string, NULL, 0); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 678 | result = acpi_battery_set_alarm(battery); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 679 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 680 | if (!result) |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 681 | return count; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 682 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | } |
| 684 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 685 | typedef int(*print_func)(struct seq_file *seq, int result); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 686 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 687 | static print_func acpi_print_funcs[ACPI_BATTERY_NUMFILES] = { |
| 688 | acpi_battery_print_info, |
| 689 | acpi_battery_print_state, |
| 690 | acpi_battery_print_alarm, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 691 | }; |
| 692 | |
| 693 | static int acpi_battery_read(int fid, struct seq_file *seq) |
| 694 | { |
| 695 | struct acpi_battery *battery = seq->private; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 696 | int result = acpi_battery_update(battery); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 697 | return acpi_print_funcs[fid](seq, result); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 698 | } |
| 699 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 700 | #define DECLARE_FILE_FUNCTIONS(_name) \ |
| 701 | static int acpi_battery_read_##_name(struct seq_file *seq, void *offset) \ |
| 702 | { \ |
| 703 | return acpi_battery_read(_name##_tag, seq); \ |
| 704 | } \ |
| 705 | static int acpi_battery_##_name##_open_fs(struct inode *inode, struct file *file) \ |
| 706 | { \ |
| 707 | return single_open(file, acpi_battery_read_##_name, PDE(inode)->data); \ |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 708 | } |
| 709 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 710 | DECLARE_FILE_FUNCTIONS(info); |
| 711 | DECLARE_FILE_FUNCTIONS(state); |
| 712 | DECLARE_FILE_FUNCTIONS(alarm); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 713 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 714 | #undef DECLARE_FILE_FUNCTIONS |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 715 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 716 | #define FILE_DESCRIPTION_RO(_name) \ |
| 717 | { \ |
| 718 | .name = __stringify(_name), \ |
| 719 | .mode = S_IRUGO, \ |
| 720 | .ops = { \ |
| 721 | .open = acpi_battery_##_name##_open_fs, \ |
| 722 | .read = seq_read, \ |
| 723 | .llseek = seq_lseek, \ |
| 724 | .release = single_release, \ |
| 725 | .owner = THIS_MODULE, \ |
| 726 | }, \ |
| 727 | } |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 728 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 729 | #define FILE_DESCRIPTION_RW(_name) \ |
| 730 | { \ |
| 731 | .name = __stringify(_name), \ |
| 732 | .mode = S_IFREG | S_IRUGO | S_IWUSR, \ |
| 733 | .ops = { \ |
| 734 | .open = acpi_battery_##_name##_open_fs, \ |
| 735 | .read = seq_read, \ |
| 736 | .llseek = seq_lseek, \ |
| 737 | .write = acpi_battery_write_##_name, \ |
| 738 | .release = single_release, \ |
| 739 | .owner = THIS_MODULE, \ |
| 740 | }, \ |
| 741 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 743 | static struct battery_file { |
| 744 | struct file_operations ops; |
| 745 | mode_t mode; |
Jan Engelhardt | 070d8eb | 2009-01-12 00:07:55 +0100 | [diff] [blame] | 746 | const char *name; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 747 | } acpi_battery_file[] = { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 748 | FILE_DESCRIPTION_RO(info), |
| 749 | FILE_DESCRIPTION_RO(state), |
| 750 | FILE_DESCRIPTION_RW(alarm), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | }; |
| 752 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 753 | #undef FILE_DESCRIPTION_RO |
| 754 | #undef FILE_DESCRIPTION_RW |
| 755 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 756 | static int acpi_battery_add_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 758 | struct proc_dir_entry *entry = NULL; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 759 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | if (!acpi_device_dir(device)) { |
| 762 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 763 | acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | if (!acpi_device_dir(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 765 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
| 767 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 768 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { |
Denis V. Lunev | cf7acfa | 2008-04-29 01:02:27 -0700 | [diff] [blame] | 769 | entry = proc_create_data(acpi_battery_file[i].name, |
| 770 | acpi_battery_file[i].mode, |
| 771 | acpi_device_dir(device), |
| 772 | &acpi_battery_file[i].ops, |
| 773 | acpi_driver_data(device)); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 774 | if (!entry) |
| 775 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 777 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | } |
| 779 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 780 | static void acpi_battery_remove_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 782 | int i; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 783 | if (!acpi_device_dir(device)) |
| 784 | return; |
| 785 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) |
| 786 | remove_proc_entry(acpi_battery_file[i].name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 789 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
| 790 | acpi_device_dir(device) = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | } |
| 792 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 793 | #endif |
Alexey Starikovskiy | 3e58ea0 | 2007-09-26 19:43:11 +0400 | [diff] [blame] | 794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | /* -------------------------------------------------------------------------- |
| 796 | Driver Interface |
| 797 | -------------------------------------------------------------------------- */ |
| 798 | |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 799 | static void acpi_battery_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | { |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 801 | struct acpi_battery *battery = acpi_driver_data(device); |
| 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 804 | return; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 805 | acpi_battery_update(battery); |
| 806 | acpi_bus_generate_proc_event(device, event, |
| 807 | acpi_battery_present(battery)); |
| 808 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
Kay Sievers | 0794469 | 2008-10-30 01:18:59 +0100 | [diff] [blame] | 809 | dev_name(&device->dev), event, |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 810 | acpi_battery_present(battery)); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 811 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 812 | /* acpi_batter_update could remove power_supply object */ |
| 813 | if (battery->bat.dev) |
| 814 | kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 815 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } |
| 817 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 818 | static int acpi_battery_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 820 | int result = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 821 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 823 | return -EINVAL; |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 824 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 826 | return -ENOMEM; |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 827 | battery->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
| 829 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 830 | device->driver_data = battery; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 831 | mutex_init(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 832 | acpi_battery_update(battery); |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 833 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | result = acpi_battery_add_fs(device); |
| 835 | if (result) |
| 836 | goto end; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 837 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 839 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
| 840 | device->status.battery_present ? "present" : "absent"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 841 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | if (result) { |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 843 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | acpi_battery_remove_fs(device); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 845 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | kfree(battery); |
| 847 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 848 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | } |
| 850 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 851 | static int acpi_battery_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 853 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 856 | return -EINVAL; |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 857 | battery = acpi_driver_data(device); |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 858 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | acpi_battery_remove_fs(device); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 860 | #endif |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 861 | #ifdef CONFIG_ACPI_SYSFS_POWER |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 862 | sysfs_remove_battery(battery); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 863 | #endif |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 864 | mutex_destroy(&battery->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | kfree(battery); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 866 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | } |
| 868 | |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 869 | /* this is needed to learn about changes made in suspended state */ |
Patrick Mochel | 5d9464a | 2006-12-07 20:56:27 +0800 | [diff] [blame] | 870 | static int acpi_battery_resume(struct acpi_device *device) |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 871 | { |
| 872 | struct acpi_battery *battery; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 873 | if (!device) |
| 874 | return -EINVAL; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 875 | battery = acpi_driver_data(device); |
| 876 | battery->update_time = 0; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 877 | acpi_battery_update(battery); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 878 | return 0; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 879 | } |
| 880 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 881 | static struct acpi_driver acpi_battery_driver = { |
| 882 | .name = "battery", |
| 883 | .class = ACPI_BATTERY_CLASS, |
| 884 | .ids = battery_device_ids, |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 885 | .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 886 | .ops = { |
| 887 | .add = acpi_battery_add, |
| 888 | .resume = acpi_battery_resume, |
| 889 | .remove = acpi_battery_remove, |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 890 | .notify = acpi_battery_notify, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 891 | }, |
| 892 | }; |
| 893 | |
Linus Torvalds | b0cbc86 | 2009-04-11 12:45:20 -0700 | [diff] [blame] | 894 | static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | { |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 896 | if (acpi_disabled) |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 897 | return; |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 898 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 899 | acpi_battery_dir = acpi_lock_battery_dir(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | if (!acpi_battery_dir) |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 901 | return; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 902 | #endif |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 903 | if (acpi_bus_register_driver(&acpi_battery_driver) < 0) { |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 904 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 905 | acpi_unlock_battery_dir(acpi_battery_dir); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 906 | #endif |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 907 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | } |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 909 | return; |
| 910 | } |
| 911 | |
| 912 | static int __init acpi_battery_init(void) |
| 913 | { |
| 914 | async_schedule(acpi_battery_init_async, NULL); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 915 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | } |
| 917 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 918 | static void __exit acpi_battery_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | acpi_bus_unregister_driver(&acpi_battery_driver); |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 921 | #ifdef CONFIG_ACPI_PROCFS_POWER |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 922 | acpi_unlock_battery_dir(acpi_battery_dir); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 923 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | } |
| 925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | module_init(acpi_battery_init); |
| 927 | module_exit(acpi_battery_exit); |