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> |
Hector Martin | bc76f90 | 2009-08-06 15:57:48 -0700 | [diff] [blame] | 34 | #include <linux/dmi.h> |
Alexander Mezin | f43691c | 2014-06-04 02:01:23 +0700 | [diff] [blame] | 35 | #include <linux/delay.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 36 | #include <linux/slab.h> |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 37 | #include <linux/suspend.h> |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 38 | #include <asm/unaligned.h> |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 39 | |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 40 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 41 | #include <linux/proc_fs.h> |
| 42 | #include <linux/seq_file.h> |
| 43 | #include <asm/uaccess.h> |
| 44 | #endif |
| 45 | |
Lv Zheng | 8b48463 | 2013-12-03 08:49:16 +0800 | [diff] [blame] | 46 | #include <linux/acpi.h> |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 47 | #include <linux/power_supply.h> |
| 48 | |
Alexander Mezin | f03be35 | 2014-03-12 00:58:46 +0700 | [diff] [blame] | 49 | #include "battery.h" |
| 50 | |
Len Brown | a192a95 | 2009-07-28 16:45:54 -0400 | [diff] [blame] | 51 | #define PREFIX "ACPI: " |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Lan Tianyu | ae6f618 | 2011-06-30 11:32:40 +0800 | [diff] [blame] | 57 | /* Battery power unit: 0 means mW, 1 means mA */ |
| 58 | #define ACPI_BATTERY_POWER_UNIT_MA 1 |
| 59 | |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 60 | #define ACPI_BATTERY_STATE_DISCHARGING 0x1 |
| 61 | #define ACPI_BATTERY_STATE_CHARGING 0x2 |
| 62 | #define ACPI_BATTERY_STATE_CRITICAL 0x4 |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 65 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 66 | ACPI_MODULE_NAME("battery"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 68 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 69 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 70 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | MODULE_LICENSE("GPL"); |
| 72 | |
Lan Tianyu | a90b403 | 2014-01-06 22:50:37 +0800 | [diff] [blame] | 73 | static int battery_bix_broken_package; |
Alexander Mezin | f43691c | 2014-06-04 02:01:23 +0700 | [diff] [blame] | 74 | static int battery_notification_delay_ms; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 75 | static unsigned int cache_time = 1000; |
| 76 | module_param(cache_time, uint, 0644); |
| 77 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 78 | |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 79 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 80 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
| 81 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); |
| 82 | |
| 83 | enum acpi_battery_files { |
| 84 | info_tag = 0, |
| 85 | state_tag, |
| 86 | alarm_tag, |
| 87 | ACPI_BATTERY_NUMFILES, |
| 88 | }; |
| 89 | |
| 90 | #endif |
| 91 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 92 | static const struct acpi_device_id battery_device_ids[] = { |
| 93 | {"PNP0C0A", 0}, |
| 94 | {"", 0}, |
| 95 | }; |
| 96 | |
| 97 | MODULE_DEVICE_TABLE(acpi, battery_device_ids); |
| 98 | |
Alexey Starikovskiy | 7b3bcc4 | 2009-10-15 14:31:24 +0400 | [diff] [blame] | 99 | enum { |
| 100 | ACPI_BATTERY_ALARM_PRESENT, |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 101 | ACPI_BATTERY_XINFO_PRESENT, |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 102 | ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 103 | /* On Lenovo Thinkpad models from 2010 and 2011, the power unit |
| 104 | switches between mWh and mAh depending on whether the system |
| 105 | is running on battery or not. When mAh is the unit, most |
| 106 | reported values are incorrect and need to be adjusted by |
| 107 | 10000/design_voltage. Verified on x201, t410, t410s, and x220. |
| 108 | Pre-2010 and 2012 models appear to always report in mWh and |
| 109 | are thus unaffected (tested with t42, t61, t500, x200, x300, |
| 110 | and x230). Also, in mid-2012 Lenovo issued a BIOS update for |
| 111 | the 2011 models that fixes the issue (tested on x220 with a |
| 112 | post-1.29 BIOS), but as of Nov. 2012, no such update is |
| 113 | available for the 2010 models. */ |
| 114 | ACPI_BATTERY_QUIRK_THINKPAD_MAH, |
Alexey Starikovskiy | 7b3bcc4 | 2009-10-15 14:31:24 +0400 | [diff] [blame] | 115 | }; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 116 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 117 | struct acpi_battery { |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 118 | struct mutex lock; |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 119 | struct mutex sysfs_lock; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 120 | struct power_supply bat; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 121 | struct acpi_device *device; |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 122 | struct notifier_block pm_nb; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 123 | unsigned long update_time; |
Lan Tianyu | 016d5ba | 2013-07-30 14:00:42 +0200 | [diff] [blame] | 124 | int revision; |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 125 | int rate_now; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 126 | int capacity_now; |
| 127 | int voltage_now; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 128 | int design_capacity; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 129 | int full_charge_capacity; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 130 | int technology; |
| 131 | int design_voltage; |
| 132 | int design_capacity_warning; |
| 133 | int design_capacity_low; |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 134 | int cycle_count; |
| 135 | int measurement_accuracy; |
| 136 | int max_sampling_time; |
| 137 | int min_sampling_time; |
| 138 | int max_averaging_interval; |
| 139 | int min_averaging_interval; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 140 | int capacity_granularity_1; |
| 141 | int capacity_granularity_2; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 142 | int alarm; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 143 | char model_number[32]; |
| 144 | char serial_number[32]; |
| 145 | char type[32]; |
| 146 | char oem_info[32]; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 147 | int state; |
| 148 | int power_unit; |
Alexey Starikovskiy | 7b3bcc4 | 2009-10-15 14:31:24 +0400 | [diff] [blame] | 149 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | }; |
| 151 | |
Phil Carmody | 497888c | 2011-07-14 15:07:13 +0300 | [diff] [blame] | 152 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 153 | |
Andy Shevchenko | efd941f | 2013-03-11 09:17:06 +0000 | [diff] [blame] | 154 | static inline int acpi_battery_present(struct acpi_battery *battery) |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 155 | { |
| 156 | return battery->device->status.battery_present; |
| 157 | } |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 158 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 159 | static int acpi_battery_technology(struct acpi_battery *battery) |
| 160 | { |
| 161 | if (!strcasecmp("NiCd", battery->type)) |
| 162 | return POWER_SUPPLY_TECHNOLOGY_NiCd; |
| 163 | if (!strcasecmp("NiMH", battery->type)) |
| 164 | return POWER_SUPPLY_TECHNOLOGY_NiMH; |
| 165 | if (!strcasecmp("LION", battery->type)) |
| 166 | return POWER_SUPPLY_TECHNOLOGY_LION; |
Andrey Borzenkov | ad40e68 | 2007-11-10 20:02:49 +0300 | [diff] [blame] | 167 | if (!strncasecmp("LI-ION", battery->type, 6)) |
Alexey Starikovskiy | 0bde7ee | 2007-10-28 15:33:10 +0300 | [diff] [blame] | 168 | return POWER_SUPPLY_TECHNOLOGY_LION; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 169 | if (!strcasecmp("LiP", battery->type)) |
| 170 | return POWER_SUPPLY_TECHNOLOGY_LIPO; |
| 171 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; |
| 172 | } |
| 173 | |
Alexey Starikovskiy | 9104476 | 2007-11-13 12:23:06 +0300 | [diff] [blame] | 174 | static int acpi_battery_get_state(struct acpi_battery *battery); |
Alexey Starikovskiy | b19073a | 2007-10-25 17:10:47 -0400 | [diff] [blame] | 175 | |
Richard Hughes | 56f382a | 2009-01-25 15:05:50 +0000 | [diff] [blame] | 176 | static int acpi_battery_is_charged(struct acpi_battery *battery) |
| 177 | { |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 178 | /* charging, discharging or critical low */ |
Richard Hughes | 56f382a | 2009-01-25 15:05:50 +0000 | [diff] [blame] | 179 | if (battery->state != 0) |
| 180 | return 0; |
| 181 | |
| 182 | /* battery not reporting charge */ |
| 183 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN || |
| 184 | battery->capacity_now == 0) |
| 185 | return 0; |
| 186 | |
| 187 | /* good batteries update full_charge as the batteries degrade */ |
| 188 | if (battery->full_charge_capacity == battery->capacity_now) |
| 189 | return 1; |
| 190 | |
| 191 | /* fallback to using design values for broken batteries */ |
| 192 | if (battery->design_capacity == battery->capacity_now) |
| 193 | return 1; |
| 194 | |
| 195 | /* we don't do any sort of metric based on percentages */ |
| 196 | return 0; |
| 197 | } |
| 198 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 199 | static int acpi_battery_get_property(struct power_supply *psy, |
| 200 | enum power_supply_property psp, |
| 201 | union power_supply_propval *val) |
| 202 | { |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 203 | int ret = 0; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 204 | struct acpi_battery *battery = to_acpi_battery(psy); |
| 205 | |
Alexey Starikovskiy | 9104476 | 2007-11-13 12:23:06 +0300 | [diff] [blame] | 206 | if (acpi_battery_present(battery)) { |
| 207 | /* run battery update only if it is present */ |
| 208 | acpi_battery_get_state(battery); |
| 209 | } else if (psp != POWER_SUPPLY_PROP_PRESENT) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 210 | return -ENODEV; |
| 211 | switch (psp) { |
| 212 | case POWER_SUPPLY_PROP_STATUS: |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 213 | if (battery->state & ACPI_BATTERY_STATE_DISCHARGING) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 214 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 215 | else if (battery->state & ACPI_BATTERY_STATE_CHARGING) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 216 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
Richard Hughes | 56f382a | 2009-01-25 15:05:50 +0000 | [diff] [blame] | 217 | else if (acpi_battery_is_charged(battery)) |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 218 | val->intval = POWER_SUPPLY_STATUS_FULL; |
Roland Dreier | 4c41d3a | 2007-11-07 15:09:09 -0800 | [diff] [blame] | 219 | else |
| 220 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 221 | break; |
| 222 | case POWER_SUPPLY_PROP_PRESENT: |
| 223 | val->intval = acpi_battery_present(battery); |
| 224 | break; |
| 225 | case POWER_SUPPLY_PROP_TECHNOLOGY: |
| 226 | val->intval = acpi_battery_technology(battery); |
| 227 | break; |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 228 | case POWER_SUPPLY_PROP_CYCLE_COUNT: |
| 229 | val->intval = battery->cycle_count; |
| 230 | break; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 231 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 232 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 233 | ret = -ENODEV; |
| 234 | else |
| 235 | val->intval = battery->design_voltage * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 236 | break; |
| 237 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 238 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) |
| 239 | ret = -ENODEV; |
| 240 | else |
| 241 | val->intval = battery->voltage_now * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 242 | break; |
| 243 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 244 | case POWER_SUPPLY_PROP_POWER_NOW: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 245 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) |
| 246 | ret = -ENODEV; |
| 247 | else |
| 248 | val->intval = battery->rate_now * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 249 | break; |
| 250 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: |
| 251 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 252 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 253 | ret = -ENODEV; |
| 254 | else |
| 255 | val->intval = battery->design_capacity * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 256 | break; |
| 257 | case POWER_SUPPLY_PROP_CHARGE_FULL: |
| 258 | case POWER_SUPPLY_PROP_ENERGY_FULL: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 259 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 260 | ret = -ENODEV; |
| 261 | else |
| 262 | val->intval = battery->full_charge_capacity * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 263 | break; |
| 264 | case POWER_SUPPLY_PROP_CHARGE_NOW: |
| 265 | case POWER_SUPPLY_PROP_ENERGY_NOW: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 266 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
| 267 | ret = -ENODEV; |
| 268 | else |
| 269 | val->intval = battery->capacity_now * 1000; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 270 | break; |
srinivas pandruvada | a58e115 | 2012-04-05 17:38:54 -0700 | [diff] [blame] | 271 | case POWER_SUPPLY_PROP_CAPACITY: |
| 272 | if (battery->capacity_now && battery->full_charge_capacity) |
| 273 | val->intval = battery->capacity_now * 100/ |
| 274 | battery->full_charge_capacity; |
| 275 | else |
| 276 | val->intval = 0; |
| 277 | break; |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 278 | case POWER_SUPPLY_PROP_CAPACITY_LEVEL: |
| 279 | if (battery->state & ACPI_BATTERY_STATE_CRITICAL) |
| 280 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; |
| 281 | else if (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) && |
| 282 | (battery->capacity_now <= battery->alarm)) |
| 283 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW; |
| 284 | else if (acpi_battery_is_charged(battery)) |
| 285 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL; |
| 286 | else |
| 287 | val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL; |
| 288 | break; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 289 | case POWER_SUPPLY_PROP_MODEL_NAME: |
| 290 | val->strval = battery->model_number; |
| 291 | break; |
| 292 | case POWER_SUPPLY_PROP_MANUFACTURER: |
| 293 | val->strval = battery->oem_info; |
| 294 | break; |
maximilian attems | 7c2670b | 2008-01-22 18:46:50 +0100 | [diff] [blame] | 295 | case POWER_SUPPLY_PROP_SERIAL_NUMBER: |
| 296 | val->strval = battery->serial_number; |
| 297 | break; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 298 | default: |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 299 | ret = -EINVAL; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 300 | } |
Rafael J. Wysocki | a1b4bd6 | 2010-10-23 19:35:15 +0200 | [diff] [blame] | 301 | return ret; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | static enum power_supply_property charge_battery_props[] = { |
| 305 | POWER_SUPPLY_PROP_STATUS, |
| 306 | POWER_SUPPLY_PROP_PRESENT, |
| 307 | POWER_SUPPLY_PROP_TECHNOLOGY, |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 308 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 309 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 310 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 311 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 312 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, |
| 313 | POWER_SUPPLY_PROP_CHARGE_FULL, |
| 314 | POWER_SUPPLY_PROP_CHARGE_NOW, |
srinivas pandruvada | a58e115 | 2012-04-05 17:38:54 -0700 | [diff] [blame] | 315 | POWER_SUPPLY_PROP_CAPACITY, |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 316 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 317 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 318 | POWER_SUPPLY_PROP_MANUFACTURER, |
maximilian attems | 7c2670b | 2008-01-22 18:46:50 +0100 | [diff] [blame] | 319 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 320 | }; |
| 321 | |
| 322 | static enum power_supply_property energy_battery_props[] = { |
| 323 | POWER_SUPPLY_PROP_STATUS, |
| 324 | POWER_SUPPLY_PROP_PRESENT, |
| 325 | POWER_SUPPLY_PROP_TECHNOLOGY, |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 326 | POWER_SUPPLY_PROP_CYCLE_COUNT, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 327 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 328 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 329 | POWER_SUPPLY_PROP_POWER_NOW, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 330 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, |
| 331 | POWER_SUPPLY_PROP_ENERGY_FULL, |
| 332 | POWER_SUPPLY_PROP_ENERGY_NOW, |
srinivas pandruvada | a58e115 | 2012-04-05 17:38:54 -0700 | [diff] [blame] | 333 | POWER_SUPPLY_PROP_CAPACITY, |
Zhang Rui | 1ac5aaa | 2014-05-28 15:23:36 +0800 | [diff] [blame] | 334 | POWER_SUPPLY_PROP_CAPACITY_LEVEL, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 335 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 336 | POWER_SUPPLY_PROP_MANUFACTURER, |
maximilian attems | 7c2670b | 2008-01-22 18:46:50 +0100 | [diff] [blame] | 337 | POWER_SUPPLY_PROP_SERIAL_NUMBER, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 338 | }; |
| 339 | |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 340 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 341 | inline char *acpi_battery_units(struct acpi_battery *battery) |
| 342 | { |
| 343 | return (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA) ? |
| 344 | "mA" : "mW"; |
| 345 | } |
| 346 | #endif |
| 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | /* -------------------------------------------------------------------------- |
| 349 | Battery Management |
| 350 | -------------------------------------------------------------------------- */ |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 351 | struct acpi_offsets { |
| 352 | size_t offset; /* offset inside struct acpi_sbs_battery */ |
| 353 | u8 mode; /* int or string? */ |
| 354 | }; |
| 355 | |
| 356 | static struct acpi_offsets state_offsets[] = { |
| 357 | {offsetof(struct acpi_battery, state), 0}, |
Alexey Starikovskiy | 7faa144 | 2009-03-27 22:23:52 -0400 | [diff] [blame] | 358 | {offsetof(struct acpi_battery, rate_now), 0}, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 359 | {offsetof(struct acpi_battery, capacity_now), 0}, |
| 360 | {offsetof(struct acpi_battery, voltage_now), 0}, |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 361 | }; |
| 362 | |
| 363 | static struct acpi_offsets info_offsets[] = { |
| 364 | {offsetof(struct acpi_battery, power_unit), 0}, |
| 365 | {offsetof(struct acpi_battery, design_capacity), 0}, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 366 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 367 | {offsetof(struct acpi_battery, technology), 0}, |
| 368 | {offsetof(struct acpi_battery, design_voltage), 0}, |
| 369 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, |
| 370 | {offsetof(struct acpi_battery, design_capacity_low), 0}, |
| 371 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, |
| 372 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, |
| 373 | {offsetof(struct acpi_battery, model_number), 1}, |
| 374 | {offsetof(struct acpi_battery, serial_number), 1}, |
| 375 | {offsetof(struct acpi_battery, type), 1}, |
| 376 | {offsetof(struct acpi_battery, oem_info), 1}, |
| 377 | }; |
| 378 | |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 379 | static struct acpi_offsets extended_info_offsets[] = { |
Lan Tianyu | 016d5ba | 2013-07-30 14:00:42 +0200 | [diff] [blame] | 380 | {offsetof(struct acpi_battery, revision), 0}, |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 381 | {offsetof(struct acpi_battery, power_unit), 0}, |
| 382 | {offsetof(struct acpi_battery, design_capacity), 0}, |
| 383 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
| 384 | {offsetof(struct acpi_battery, technology), 0}, |
| 385 | {offsetof(struct acpi_battery, design_voltage), 0}, |
| 386 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, |
| 387 | {offsetof(struct acpi_battery, design_capacity_low), 0}, |
| 388 | {offsetof(struct acpi_battery, cycle_count), 0}, |
| 389 | {offsetof(struct acpi_battery, measurement_accuracy), 0}, |
| 390 | {offsetof(struct acpi_battery, max_sampling_time), 0}, |
| 391 | {offsetof(struct acpi_battery, min_sampling_time), 0}, |
| 392 | {offsetof(struct acpi_battery, max_averaging_interval), 0}, |
| 393 | {offsetof(struct acpi_battery, min_averaging_interval), 0}, |
| 394 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, |
| 395 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, |
| 396 | {offsetof(struct acpi_battery, model_number), 1}, |
| 397 | {offsetof(struct acpi_battery, serial_number), 1}, |
| 398 | {offsetof(struct acpi_battery, type), 1}, |
| 399 | {offsetof(struct acpi_battery, oem_info), 1}, |
| 400 | }; |
| 401 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 402 | static int extract_package(struct acpi_battery *battery, |
| 403 | union acpi_object *package, |
| 404 | struct acpi_offsets *offsets, int num) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 405 | { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 406 | int i; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 407 | union acpi_object *element; |
| 408 | if (package->type != ACPI_TYPE_PACKAGE) |
| 409 | return -EFAULT; |
| 410 | for (i = 0; i < num; ++i) { |
| 411 | if (package->package.count <= i) |
| 412 | return -EFAULT; |
| 413 | element = &package->package.elements[i]; |
| 414 | if (offsets[i].mode) { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 415 | u8 *ptr = (u8 *)battery + offsets[i].offset; |
| 416 | if (element->type == ACPI_TYPE_STRING || |
| 417 | element->type == ACPI_TYPE_BUFFER) |
| 418 | strncpy(ptr, element->string.pointer, 32); |
| 419 | else if (element->type == ACPI_TYPE_INTEGER) { |
| 420 | strncpy(ptr, (u8 *)&element->integer.value, |
Lin Ming | 439913f | 2010-01-28 10:53:19 +0800 | [diff] [blame] | 421 | sizeof(u64)); |
| 422 | ptr[sizeof(u64)] = 0; |
Alexey Starikovskiy | b8a1bdb | 2008-03-17 22:37:42 -0400 | [diff] [blame] | 423 | } else |
| 424 | *ptr = 0; /* don't have value */ |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 425 | } else { |
Alexey Starikovskiy | b8a1bdb | 2008-03-17 22:37:42 -0400 | [diff] [blame] | 426 | int *x = (int *)((u8 *)battery + offsets[i].offset); |
| 427 | *x = (element->type == ACPI_TYPE_INTEGER) ? |
| 428 | element->integer.value : -1; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 429 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 430 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 431 | return 0; |
| 432 | } |
| 433 | |
| 434 | static int acpi_battery_get_status(struct acpi_battery *battery) |
| 435 | { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 436 | if (acpi_bus_get_status(battery->device)) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 437 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
| 438 | return -ENODEV; |
| 439 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 440 | return 0; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | static int acpi_battery_get_info(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 445 | int result = -EFAULT; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 446 | acpi_status status = 0; |
Nicholas Mazzuca | 0f4c654 | 2013-05-08 23:11:15 +0000 | [diff] [blame] | 447 | char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags) ? |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 448 | "_BIX" : "_BIF"; |
| 449 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 450 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 452 | if (!acpi_battery_present(battery)) |
| 453 | return 0; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 454 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 455 | status = acpi_evaluate_object(battery->device->handle, name, |
| 456 | NULL, &buffer); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 457 | mutex_unlock(&battery->lock); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | if (ACPI_FAILURE(status)) { |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 460 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", name)); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 461 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
Lan Tianyu | a90b403 | 2014-01-06 22:50:37 +0800 | [diff] [blame] | 463 | |
| 464 | if (battery_bix_broken_package) |
| 465 | result = extract_package(battery, buffer.pointer, |
| 466 | extended_info_offsets + 1, |
| 467 | ARRAY_SIZE(extended_info_offsets) - 1); |
| 468 | else if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags)) |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 469 | result = extract_package(battery, buffer.pointer, |
| 470 | extended_info_offsets, |
| 471 | ARRAY_SIZE(extended_info_offsets)); |
| 472 | else |
| 473 | result = extract_package(battery, buffer.pointer, |
| 474 | info_offsets, ARRAY_SIZE(info_offsets)); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 475 | kfree(buffer.pointer); |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 476 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)) |
| 477 | battery->full_charge_capacity = battery->design_capacity; |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 478 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) && |
| 479 | battery->power_unit && battery->design_voltage) { |
| 480 | battery->design_capacity = battery->design_capacity * |
| 481 | 10000 / battery->design_voltage; |
| 482 | battery->full_charge_capacity = battery->full_charge_capacity * |
| 483 | 10000 / battery->design_voltage; |
| 484 | battery->design_capacity_warning = |
| 485 | battery->design_capacity_warning * |
| 486 | 10000 / battery->design_voltage; |
| 487 | /* Curiously, design_capacity_low, unlike the rest of them, |
| 488 | is correct. */ |
| 489 | /* capacity_granularity_* equal 1 on the systems tested, so |
| 490 | it's impossible to tell if they would need an adjustment |
| 491 | or not if their values were higher. */ |
| 492 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 493 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 496 | static int acpi_battery_get_state(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 498 | int result = 0; |
| 499 | acpi_status status = 0; |
| 500 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 502 | if (!acpi_battery_present(battery)) |
| 503 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 505 | if (battery->update_time && |
| 506 | time_before(jiffies, battery->update_time + |
| 507 | msecs_to_jiffies(cache_time))) |
| 508 | return 0; |
| 509 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 510 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 511 | status = acpi_evaluate_object(battery->device->handle, "_BST", |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 512 | NULL, &buffer); |
| 513 | mutex_unlock(&battery->lock); |
Len Brown | 5b31d89 | 2007-08-15 00:19:26 -0400 | [diff] [blame] | 514 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 516 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 517 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 519 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 520 | result = extract_package(battery, buffer.pointer, |
| 521 | state_offsets, ARRAY_SIZE(state_offsets)); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 522 | battery->update_time = jiffies; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 523 | kfree(buffer.pointer); |
Hector Martin | bc76f90 | 2009-08-06 15:57:48 -0700 | [diff] [blame] | 524 | |
Lan Tianyu | 55003b2 | 2011-06-30 11:33:12 +0800 | [diff] [blame] | 525 | /* For buggy DSDTs that report negative 16-bit values for either |
| 526 | * charging or discharging current and/or report 0 as 65536 |
| 527 | * due to bad math. |
| 528 | */ |
| 529 | if (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA && |
| 530 | battery->rate_now != ACPI_BATTERY_VALUE_UNKNOWN && |
| 531 | (s16)(battery->rate_now) < 0) { |
Hector Martin | bc76f90 | 2009-08-06 15:57:48 -0700 | [diff] [blame] | 532 | battery->rate_now = abs((s16)battery->rate_now); |
Lan Tianyu | 55003b2 | 2011-06-30 11:33:12 +0800 | [diff] [blame] | 533 | printk_once(KERN_WARNING FW_BUG "battery: (dis)charge rate" |
| 534 | " invalid.\n"); |
| 535 | } |
Hector Martin | bc76f90 | 2009-08-06 15:57:48 -0700 | [diff] [blame] | 536 | |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 537 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags) |
| 538 | && battery->capacity_now >= 0 && battery->capacity_now <= 100) |
| 539 | battery->capacity_now = (battery->capacity_now * |
| 540 | battery->full_charge_capacity) / 100; |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 541 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) && |
| 542 | battery->power_unit && battery->design_voltage) { |
| 543 | battery->capacity_now = battery->capacity_now * |
| 544 | 10000 / battery->design_voltage; |
| 545 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 546 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | } |
| 548 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 549 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 551 | acpi_status status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 553 | if (!acpi_battery_present(battery) || |
Alexey Starikovskiy | 7b3bcc4 | 2009-10-15 14:31:24 +0400 | [diff] [blame] | 554 | !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags)) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 555 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 557 | mutex_lock(&battery->lock); |
Jiang Liu | 0db9820 | 2013-06-29 00:24:39 +0800 | [diff] [blame] | 558 | status = acpi_execute_simple_method(battery->device->handle, "_BTP", |
| 559 | battery->alarm); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 560 | mutex_unlock(&battery->lock); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 563 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 565 | 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] | 566 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | } |
| 568 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 569 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 571 | /* See if alarms are supported, and if so, set default */ |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 572 | if (!acpi_has_method(battery->device->handle, "_BTP")) { |
Alexey Starikovskiy | 7b3bcc4 | 2009-10-15 14:31:24 +0400 | [diff] [blame] | 573 | clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 574 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
Alexey Starikovskiy | 7b3bcc4 | 2009-10-15 14:31:24 +0400 | [diff] [blame] | 576 | set_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 577 | if (!battery->alarm) |
| 578 | battery->alarm = battery->design_capacity_warning; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 579 | return acpi_battery_set_alarm(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | } |
| 581 | |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 582 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
| 583 | struct device_attribute *attr, |
| 584 | char *buf) |
| 585 | { |
| 586 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); |
| 587 | return sprintf(buf, "%d\n", battery->alarm * 1000); |
| 588 | } |
| 589 | |
| 590 | static ssize_t acpi_battery_alarm_store(struct device *dev, |
| 591 | struct device_attribute *attr, |
| 592 | const char *buf, size_t count) |
| 593 | { |
| 594 | unsigned long x; |
| 595 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); |
Luis G.F | 47a08c8 | 2014-01-21 15:40:43 +0100 | [diff] [blame] | 596 | if (sscanf(buf, "%lu\n", &x) == 1) |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 597 | battery->alarm = x/1000; |
| 598 | if (acpi_battery_present(battery)) |
| 599 | acpi_battery_set_alarm(battery); |
| 600 | return count; |
| 601 | } |
| 602 | |
| 603 | static struct device_attribute alarm_attr = { |
Parag Warudkar | 01e8ef1 | 2008-10-18 20:28:50 -0700 | [diff] [blame] | 604 | .attr = {.name = "alarm", .mode = 0644}, |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 605 | .show = acpi_battery_alarm_show, |
| 606 | .store = acpi_battery_alarm_store, |
| 607 | }; |
| 608 | |
| 609 | static int sysfs_add_battery(struct acpi_battery *battery) |
| 610 | { |
| 611 | int result; |
| 612 | |
Lan Tianyu | ae6f618 | 2011-06-30 11:32:40 +0800 | [diff] [blame] | 613 | if (battery->power_unit == ACPI_BATTERY_POWER_UNIT_MA) { |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 614 | battery->bat.properties = charge_battery_props; |
| 615 | battery->bat.num_properties = |
| 616 | ARRAY_SIZE(charge_battery_props); |
| 617 | } else { |
| 618 | battery->bat.properties = energy_battery_props; |
| 619 | battery->bat.num_properties = |
| 620 | ARRAY_SIZE(energy_battery_props); |
| 621 | } |
| 622 | |
| 623 | battery->bat.name = acpi_device_bid(battery->device); |
| 624 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; |
| 625 | battery->bat.get_property = acpi_battery_get_property; |
| 626 | |
Zhang Rui | e0d1f09 | 2014-05-28 15:23:38 +0800 | [diff] [blame] | 627 | result = power_supply_register_no_ws(&battery->device->dev, &battery->bat); |
| 628 | |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 629 | if (result) |
| 630 | return result; |
| 631 | return device_create_file(battery->bat.dev, &alarm_attr); |
| 632 | } |
| 633 | |
| 634 | static void sysfs_remove_battery(struct acpi_battery *battery) |
| 635 | { |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 636 | mutex_lock(&battery->sysfs_lock); |
Lan Tianyu | 9c921c22 | 2011-06-30 11:34:12 +0800 | [diff] [blame] | 637 | if (!battery->bat.dev) { |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 638 | mutex_unlock(&battery->sysfs_lock); |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 639 | return; |
Lan Tianyu | 9c921c22 | 2011-06-30 11:34:12 +0800 | [diff] [blame] | 640 | } |
| 641 | |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 642 | device_remove_file(battery->bat.dev, &alarm_attr); |
| 643 | power_supply_unregister(&battery->bat); |
Alexey Starikovskiy | 9104476 | 2007-11-13 12:23:06 +0300 | [diff] [blame] | 644 | battery->bat.dev = NULL; |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 645 | mutex_unlock(&battery->sysfs_lock); |
Hector Martin | bc76f90 | 2009-08-06 15:57:48 -0700 | [diff] [blame] | 646 | } |
| 647 | |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 648 | static void find_battery(const struct dmi_header *dm, void *private) |
| 649 | { |
| 650 | struct acpi_battery *battery = (struct acpi_battery *)private; |
| 651 | /* Note: the hardcoded offsets below have been extracted from |
| 652 | the source code of dmidecode. */ |
| 653 | if (dm->type == DMI_ENTRY_PORTABLE_BATTERY && dm->length >= 8) { |
| 654 | const u8 *dmi_data = (const u8 *)(dm + 1); |
| 655 | int dmi_capacity = get_unaligned((const u16 *)(dmi_data + 6)); |
| 656 | if (dm->length >= 18) |
| 657 | dmi_capacity *= dmi_data[17]; |
| 658 | if (battery->design_capacity * battery->design_voltage / 1000 |
| 659 | != dmi_capacity && |
| 660 | battery->design_capacity * 10 == dmi_capacity) |
| 661 | set_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, |
| 662 | &battery->flags); |
| 663 | } |
| 664 | } |
| 665 | |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 666 | /* |
| 667 | * According to the ACPI spec, some kinds of primary batteries can |
| 668 | * report percentage battery remaining capacity directly to OS. |
| 669 | * In this case, it reports the Last Full Charged Capacity == 100 |
| 670 | * and BatteryPresentRate == 0xFFFFFFFF. |
| 671 | * |
| 672 | * Now we found some battery reports percentage remaining capacity |
| 673 | * even if it's rechargeable. |
| 674 | * https://bugzilla.kernel.org/show_bug.cgi?id=15979 |
| 675 | * |
| 676 | * Handle this correctly so that they won't break userspace. |
| 677 | */ |
Lan Tianyu | 7b78622 | 2011-06-30 11:33:27 +0800 | [diff] [blame] | 678 | static void acpi_battery_quirks(struct acpi_battery *battery) |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 679 | { |
| 680 | if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags)) |
Nicholas Mazzuca | 0f4c654 | 2013-05-08 23:11:15 +0000 | [diff] [blame] | 681 | return; |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 682 | |
Nicholas Mazzuca | 0f4c654 | 2013-05-08 23:11:15 +0000 | [diff] [blame] | 683 | if (battery->full_charge_capacity == 100 && |
| 684 | battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN && |
| 685 | battery->capacity_now >= 0 && battery->capacity_now <= 100) { |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 686 | set_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags); |
| 687 | battery->full_charge_capacity = battery->design_capacity; |
| 688 | battery->capacity_now = (battery->capacity_now * |
| 689 | battery->full_charge_capacity) / 100; |
| 690 | } |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 691 | |
| 692 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags)) |
Nicholas Mazzuca | 0f4c654 | 2013-05-08 23:11:15 +0000 | [diff] [blame] | 693 | return; |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 694 | |
| 695 | if (battery->power_unit && dmi_name_in_vendors("LENOVO")) { |
| 696 | const char *s; |
| 697 | s = dmi_get_system_info(DMI_PRODUCT_VERSION); |
Rasmus Villemoes | ffd8a73 | 2014-09-16 22:51:24 +0200 | [diff] [blame] | 698 | if (s && !strncasecmp(s, "ThinkPad", 8)) { |
Kamil Iskra | 4000e626 | 2012-11-16 22:28:58 +0100 | [diff] [blame] | 699 | dmi_walk(find_battery, battery); |
| 700 | if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, |
| 701 | &battery->flags) && |
| 702 | battery->design_voltage) { |
| 703 | battery->design_capacity = |
| 704 | battery->design_capacity * |
| 705 | 10000 / battery->design_voltage; |
| 706 | battery->full_charge_capacity = |
| 707 | battery->full_charge_capacity * |
| 708 | 10000 / battery->design_voltage; |
| 709 | battery->design_capacity_warning = |
| 710 | battery->design_capacity_warning * |
| 711 | 10000 / battery->design_voltage; |
| 712 | battery->capacity_now = battery->capacity_now * |
| 713 | 10000 / battery->design_voltage; |
| 714 | } |
| 715 | } |
| 716 | } |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 717 | } |
| 718 | |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 719 | static int acpi_battery_update(struct acpi_battery *battery, bool resume) |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 720 | { |
Alexey Starikovskiy | 50b1785 | 2008-12-23 02:44:54 +0300 | [diff] [blame] | 721 | int result, old_present = acpi_battery_present(battery); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 722 | result = acpi_battery_get_status(battery); |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 723 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 724 | return result; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 725 | if (!acpi_battery_present(battery)) { |
| 726 | sysfs_remove_battery(battery); |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 727 | battery->update_time = 0; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 728 | return 0; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 729 | } |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 730 | |
| 731 | if (resume) |
| 732 | return 0; |
| 733 | |
Alexey Starikovskiy | 50b1785 | 2008-12-23 02:44:54 +0300 | [diff] [blame] | 734 | if (!battery->update_time || |
| 735 | old_present != acpi_battery_present(battery)) { |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 736 | result = acpi_battery_get_info(battery); |
| 737 | if (result) |
| 738 | return result; |
| 739 | acpi_battery_init_alarm(battery); |
| 740 | } |
Stefan Hajnoczi | eb03cb0 | 2011-07-12 09:03:29 +0100 | [diff] [blame] | 741 | if (!battery->bat.dev) { |
| 742 | result = sysfs_add_battery(battery); |
| 743 | if (result) |
| 744 | return result; |
| 745 | } |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 746 | result = acpi_battery_get_state(battery); |
Zhang Rui | e0d1f09 | 2014-05-28 15:23:38 +0800 | [diff] [blame] | 747 | if (result) |
| 748 | return result; |
Lan Tianyu | 7b78622 | 2011-06-30 11:33:27 +0800 | [diff] [blame] | 749 | acpi_battery_quirks(battery); |
Zhang Rui | e0d1f09 | 2014-05-28 15:23:38 +0800 | [diff] [blame] | 750 | |
| 751 | /* |
| 752 | * Wakeup the system if battery is critical low |
| 753 | * or lower than the alarm level |
| 754 | */ |
| 755 | if ((battery->state & ACPI_BATTERY_STATE_CRITICAL) || |
| 756 | (test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags) && |
| 757 | (battery->capacity_now <= battery->alarm))) |
| 758 | pm_wakeup_event(&battery->device->dev, 0); |
| 759 | |
Zhang Rui | 557d586 | 2010-10-22 10:02:06 +0800 | [diff] [blame] | 760 | return result; |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 761 | } |
| 762 | |
Rafael J. Wysocki | da8aeb9 | 2011-01-06 23:42:27 +0100 | [diff] [blame] | 763 | static void acpi_battery_refresh(struct acpi_battery *battery) |
| 764 | { |
Andy Whitcroft | c597145 | 2012-05-03 14:48:26 +0100 | [diff] [blame] | 765 | int power_unit; |
| 766 | |
Rafael J. Wysocki | da8aeb9 | 2011-01-06 23:42:27 +0100 | [diff] [blame] | 767 | if (!battery->bat.dev) |
| 768 | return; |
| 769 | |
Andy Whitcroft | c597145 | 2012-05-03 14:48:26 +0100 | [diff] [blame] | 770 | power_unit = battery->power_unit; |
| 771 | |
Rafael J. Wysocki | da8aeb9 | 2011-01-06 23:42:27 +0100 | [diff] [blame] | 772 | acpi_battery_get_info(battery); |
Andy Whitcroft | c597145 | 2012-05-03 14:48:26 +0100 | [diff] [blame] | 773 | |
| 774 | if (power_unit == battery->power_unit) |
| 775 | return; |
| 776 | |
| 777 | /* The battery has changed its reporting units. */ |
Rafael J. Wysocki | da8aeb9 | 2011-01-06 23:42:27 +0100 | [diff] [blame] | 778 | sysfs_remove_battery(battery); |
| 779 | sysfs_add_battery(battery); |
| 780 | } |
| 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | /* -------------------------------------------------------------------------- |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 783 | FS Interface (/proc) |
| 784 | -------------------------------------------------------------------------- */ |
| 785 | |
| 786 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 787 | static struct proc_dir_entry *acpi_battery_dir; |
| 788 | |
| 789 | static int acpi_battery_print_info(struct seq_file *seq, int result) |
| 790 | { |
| 791 | struct acpi_battery *battery = seq->private; |
| 792 | |
| 793 | if (result) |
| 794 | goto end; |
| 795 | |
| 796 | seq_printf(seq, "present: %s\n", |
| 797 | acpi_battery_present(battery) ? "yes" : "no"); |
| 798 | if (!acpi_battery_present(battery)) |
| 799 | goto end; |
| 800 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 801 | seq_printf(seq, "design capacity: unknown\n"); |
| 802 | else |
| 803 | seq_printf(seq, "design capacity: %d %sh\n", |
| 804 | battery->design_capacity, |
| 805 | acpi_battery_units(battery)); |
| 806 | |
| 807 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
| 808 | seq_printf(seq, "last full capacity: unknown\n"); |
| 809 | else |
| 810 | seq_printf(seq, "last full capacity: %d %sh\n", |
| 811 | battery->full_charge_capacity, |
| 812 | acpi_battery_units(battery)); |
| 813 | |
| 814 | seq_printf(seq, "battery technology: %srechargeable\n", |
| 815 | (!battery->technology)?"non-":""); |
| 816 | |
| 817 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
| 818 | seq_printf(seq, "design voltage: unknown\n"); |
| 819 | else |
| 820 | seq_printf(seq, "design voltage: %d mV\n", |
| 821 | battery->design_voltage); |
| 822 | seq_printf(seq, "design capacity warning: %d %sh\n", |
| 823 | battery->design_capacity_warning, |
| 824 | acpi_battery_units(battery)); |
| 825 | seq_printf(seq, "design capacity low: %d %sh\n", |
| 826 | battery->design_capacity_low, |
| 827 | acpi_battery_units(battery)); |
| 828 | seq_printf(seq, "cycle count: %i\n", battery->cycle_count); |
| 829 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
| 830 | battery->capacity_granularity_1, |
| 831 | acpi_battery_units(battery)); |
| 832 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
| 833 | battery->capacity_granularity_2, |
| 834 | acpi_battery_units(battery)); |
| 835 | seq_printf(seq, "model number: %s\n", battery->model_number); |
| 836 | seq_printf(seq, "serial number: %s\n", battery->serial_number); |
| 837 | seq_printf(seq, "battery type: %s\n", battery->type); |
| 838 | seq_printf(seq, "OEM info: %s\n", battery->oem_info); |
| 839 | end: |
| 840 | if (result) |
| 841 | seq_printf(seq, "ERROR: Unable to read battery info\n"); |
| 842 | return result; |
| 843 | } |
| 844 | |
| 845 | static int acpi_battery_print_state(struct seq_file *seq, int result) |
| 846 | { |
| 847 | struct acpi_battery *battery = seq->private; |
| 848 | |
| 849 | if (result) |
| 850 | goto end; |
| 851 | |
| 852 | seq_printf(seq, "present: %s\n", |
| 853 | acpi_battery_present(battery) ? "yes" : "no"); |
| 854 | if (!acpi_battery_present(battery)) |
| 855 | goto end; |
| 856 | |
| 857 | seq_printf(seq, "capacity state: %s\n", |
| 858 | (battery->state & 0x04) ? "critical" : "ok"); |
| 859 | if ((battery->state & 0x01) && (battery->state & 0x02)) |
| 860 | seq_printf(seq, |
| 861 | "charging state: charging/discharging\n"); |
| 862 | else if (battery->state & 0x01) |
| 863 | seq_printf(seq, "charging state: discharging\n"); |
| 864 | else if (battery->state & 0x02) |
| 865 | seq_printf(seq, "charging state: charging\n"); |
| 866 | else |
| 867 | seq_printf(seq, "charging state: charged\n"); |
| 868 | |
| 869 | if (battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN) |
| 870 | seq_printf(seq, "present rate: unknown\n"); |
| 871 | else |
| 872 | seq_printf(seq, "present rate: %d %s\n", |
| 873 | battery->rate_now, acpi_battery_units(battery)); |
| 874 | |
| 875 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
| 876 | seq_printf(seq, "remaining capacity: unknown\n"); |
| 877 | else |
| 878 | seq_printf(seq, "remaining capacity: %d %sh\n", |
| 879 | battery->capacity_now, acpi_battery_units(battery)); |
| 880 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) |
| 881 | seq_printf(seq, "present voltage: unknown\n"); |
| 882 | else |
| 883 | seq_printf(seq, "present voltage: %d mV\n", |
| 884 | battery->voltage_now); |
| 885 | end: |
| 886 | if (result) |
| 887 | seq_printf(seq, "ERROR: Unable to read battery state\n"); |
| 888 | |
| 889 | return result; |
| 890 | } |
| 891 | |
| 892 | static int acpi_battery_print_alarm(struct seq_file *seq, int result) |
| 893 | { |
| 894 | struct acpi_battery *battery = seq->private; |
| 895 | |
| 896 | if (result) |
| 897 | goto end; |
| 898 | |
| 899 | if (!acpi_battery_present(battery)) { |
| 900 | seq_printf(seq, "present: no\n"); |
| 901 | goto end; |
| 902 | } |
| 903 | seq_printf(seq, "alarm: "); |
| 904 | if (!battery->alarm) |
| 905 | seq_printf(seq, "unsupported\n"); |
| 906 | else |
| 907 | seq_printf(seq, "%u %sh\n", battery->alarm, |
| 908 | acpi_battery_units(battery)); |
| 909 | end: |
| 910 | if (result) |
| 911 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); |
| 912 | return result; |
| 913 | } |
| 914 | |
| 915 | static ssize_t acpi_battery_write_alarm(struct file *file, |
| 916 | const char __user * buffer, |
| 917 | size_t count, loff_t * ppos) |
| 918 | { |
| 919 | int result = 0; |
| 920 | char alarm_string[12] = { '\0' }; |
| 921 | struct seq_file *m = file->private_data; |
| 922 | struct acpi_battery *battery = m->private; |
| 923 | |
| 924 | if (!battery || (count > sizeof(alarm_string) - 1)) |
| 925 | return -EINVAL; |
| 926 | if (!acpi_battery_present(battery)) { |
| 927 | result = -ENODEV; |
| 928 | goto end; |
| 929 | } |
| 930 | if (copy_from_user(alarm_string, buffer, count)) { |
| 931 | result = -EFAULT; |
| 932 | goto end; |
| 933 | } |
| 934 | alarm_string[count] = '\0'; |
Christoph Jaeger | 3d91589 | 2014-06-13 21:49:58 +0200 | [diff] [blame] | 935 | if (kstrtoint(alarm_string, 0, &battery->alarm)) { |
| 936 | result = -EINVAL; |
| 937 | goto end; |
| 938 | } |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 939 | result = acpi_battery_set_alarm(battery); |
| 940 | end: |
| 941 | if (!result) |
| 942 | return count; |
| 943 | return result; |
| 944 | } |
| 945 | |
| 946 | typedef int(*print_func)(struct seq_file *seq, int result); |
| 947 | |
| 948 | static print_func acpi_print_funcs[ACPI_BATTERY_NUMFILES] = { |
| 949 | acpi_battery_print_info, |
| 950 | acpi_battery_print_state, |
| 951 | acpi_battery_print_alarm, |
| 952 | }; |
| 953 | |
| 954 | static int acpi_battery_read(int fid, struct seq_file *seq) |
| 955 | { |
| 956 | struct acpi_battery *battery = seq->private; |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 957 | int result = acpi_battery_update(battery, false); |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 958 | return acpi_print_funcs[fid](seq, result); |
| 959 | } |
| 960 | |
| 961 | #define DECLARE_FILE_FUNCTIONS(_name) \ |
| 962 | static int acpi_battery_read_##_name(struct seq_file *seq, void *offset) \ |
| 963 | { \ |
| 964 | return acpi_battery_read(_name##_tag, seq); \ |
| 965 | } \ |
| 966 | static int acpi_battery_##_name##_open_fs(struct inode *inode, struct file *file) \ |
| 967 | { \ |
| 968 | return single_open(file, acpi_battery_read_##_name, PDE_DATA(inode)); \ |
| 969 | } |
| 970 | |
| 971 | DECLARE_FILE_FUNCTIONS(info); |
| 972 | DECLARE_FILE_FUNCTIONS(state); |
| 973 | DECLARE_FILE_FUNCTIONS(alarm); |
| 974 | |
| 975 | #undef DECLARE_FILE_FUNCTIONS |
| 976 | |
| 977 | #define FILE_DESCRIPTION_RO(_name) \ |
| 978 | { \ |
| 979 | .name = __stringify(_name), \ |
| 980 | .mode = S_IRUGO, \ |
| 981 | .ops = { \ |
| 982 | .open = acpi_battery_##_name##_open_fs, \ |
| 983 | .read = seq_read, \ |
| 984 | .llseek = seq_lseek, \ |
| 985 | .release = single_release, \ |
| 986 | .owner = THIS_MODULE, \ |
| 987 | }, \ |
| 988 | } |
| 989 | |
| 990 | #define FILE_DESCRIPTION_RW(_name) \ |
| 991 | { \ |
| 992 | .name = __stringify(_name), \ |
| 993 | .mode = S_IFREG | S_IRUGO | S_IWUSR, \ |
| 994 | .ops = { \ |
| 995 | .open = acpi_battery_##_name##_open_fs, \ |
| 996 | .read = seq_read, \ |
| 997 | .llseek = seq_lseek, \ |
| 998 | .write = acpi_battery_write_##_name, \ |
| 999 | .release = single_release, \ |
| 1000 | .owner = THIS_MODULE, \ |
| 1001 | }, \ |
| 1002 | } |
| 1003 | |
| 1004 | static const struct battery_file { |
| 1005 | struct file_operations ops; |
| 1006 | umode_t mode; |
| 1007 | const char *name; |
| 1008 | } acpi_battery_file[] = { |
| 1009 | FILE_DESCRIPTION_RO(info), |
| 1010 | FILE_DESCRIPTION_RO(state), |
| 1011 | FILE_DESCRIPTION_RW(alarm), |
| 1012 | }; |
| 1013 | |
| 1014 | #undef FILE_DESCRIPTION_RO |
| 1015 | #undef FILE_DESCRIPTION_RW |
| 1016 | |
| 1017 | static int acpi_battery_add_fs(struct acpi_device *device) |
| 1018 | { |
| 1019 | struct proc_dir_entry *entry = NULL; |
| 1020 | int i; |
| 1021 | |
| 1022 | printk(KERN_WARNING PREFIX "Deprecated procfs I/F for battery is loaded," |
| 1023 | " please retry with CONFIG_ACPI_PROCFS_POWER cleared\n"); |
| 1024 | if (!acpi_device_dir(device)) { |
| 1025 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
| 1026 | acpi_battery_dir); |
| 1027 | if (!acpi_device_dir(device)) |
| 1028 | return -ENODEV; |
| 1029 | } |
| 1030 | |
| 1031 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { |
| 1032 | entry = proc_create_data(acpi_battery_file[i].name, |
| 1033 | acpi_battery_file[i].mode, |
| 1034 | acpi_device_dir(device), |
| 1035 | &acpi_battery_file[i].ops, |
| 1036 | acpi_driver_data(device)); |
| 1037 | if (!entry) |
| 1038 | return -ENODEV; |
| 1039 | } |
| 1040 | return 0; |
| 1041 | } |
| 1042 | |
| 1043 | static void acpi_battery_remove_fs(struct acpi_device *device) |
| 1044 | { |
| 1045 | int i; |
| 1046 | if (!acpi_device_dir(device)) |
| 1047 | return; |
| 1048 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) |
| 1049 | remove_proc_entry(acpi_battery_file[i].name, |
| 1050 | acpi_device_dir(device)); |
| 1051 | |
| 1052 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
| 1053 | acpi_device_dir(device) = NULL; |
| 1054 | } |
| 1055 | |
| 1056 | #endif |
| 1057 | |
| 1058 | /* -------------------------------------------------------------------------- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | Driver Interface |
| 1060 | -------------------------------------------------------------------------- */ |
| 1061 | |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 1062 | static void acpi_battery_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | { |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 1064 | struct acpi_battery *battery = acpi_driver_data(device); |
Zhang Rui | 153e500 | 2010-07-07 09:11:57 +0800 | [diff] [blame] | 1065 | struct device *old; |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 1066 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1068 | return; |
Zhang Rui | 153e500 | 2010-07-07 09:11:57 +0800 | [diff] [blame] | 1069 | old = battery->bat.dev; |
Alexander Mezin | f43691c | 2014-06-04 02:01:23 +0700 | [diff] [blame] | 1070 | /* |
| 1071 | * On Acer Aspire V5-573G notifications are sometimes triggered too |
| 1072 | * early. For example, when AC is unplugged and notification is |
| 1073 | * triggered, battery state is still reported as "Full", and changes to |
| 1074 | * "Discharging" only after short delay, without any notification. |
| 1075 | */ |
| 1076 | if (battery_notification_delay_ms > 0) |
| 1077 | msleep(battery_notification_delay_ms); |
Rafael J. Wysocki | da8aeb9 | 2011-01-06 23:42:27 +0100 | [diff] [blame] | 1078 | if (event == ACPI_BATTERY_NOTIFY_INFO) |
| 1079 | acpi_battery_refresh(battery); |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 1080 | acpi_battery_update(battery, false); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 1081 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
Kay Sievers | 0794469 | 2008-10-30 01:18:59 +0100 | [diff] [blame] | 1082 | dev_name(&device->dev), event, |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 1083 | acpi_battery_present(battery)); |
Alexander Mezin | 411e0f7 | 2014-03-12 00:58:47 +0700 | [diff] [blame] | 1084 | acpi_notifier_call_chain(device, event, acpi_battery_present(battery)); |
Justin P. Mattock | 2345baf | 2009-12-13 14:42:36 -0800 | [diff] [blame] | 1085 | /* acpi_battery_update could remove power_supply object */ |
Zhang Rui | 153e500 | 2010-07-07 09:11:57 +0800 | [diff] [blame] | 1086 | if (old && battery->bat.dev) |
Alan Jenkins | f79e1ce | 2009-06-30 14:36:16 +0000 | [diff] [blame] | 1087 | power_supply_changed(&battery->bat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | } |
| 1089 | |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1090 | static int battery_notify(struct notifier_block *nb, |
| 1091 | unsigned long mode, void *_unused) |
| 1092 | { |
| 1093 | struct acpi_battery *battery = container_of(nb, struct acpi_battery, |
| 1094 | pm_nb); |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 1095 | int result; |
| 1096 | |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1097 | switch (mode) { |
Lan Tianyu | d5a5911 | 2011-06-30 11:33:40 +0800 | [diff] [blame] | 1098 | case PM_POST_HIBERNATION: |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1099 | case PM_POST_SUSPEND: |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 1100 | if (!acpi_battery_present(battery)) |
| 1101 | return 0; |
| 1102 | |
| 1103 | if (!battery->bat.dev) { |
| 1104 | result = acpi_battery_get_info(battery); |
| 1105 | if (result) |
| 1106 | return result; |
| 1107 | |
| 1108 | result = sysfs_add_battery(battery); |
| 1109 | if (result) |
| 1110 | return result; |
| 1111 | } else |
| 1112 | acpi_battery_refresh(battery); |
| 1113 | |
| 1114 | acpi_battery_init_alarm(battery); |
| 1115 | acpi_battery_get_state(battery); |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1116 | break; |
| 1117 | } |
| 1118 | |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
Alexander Mezin | 3f5dc08 | 2014-06-04 02:01:22 +0700 | [diff] [blame] | 1122 | static int battery_bix_broken_package_quirk(const struct dmi_system_id *d) |
| 1123 | { |
| 1124 | battery_bix_broken_package = 1; |
| 1125 | return 0; |
| 1126 | } |
| 1127 | |
Alexander Mezin | f43691c | 2014-06-04 02:01:23 +0700 | [diff] [blame] | 1128 | static int battery_notification_delay_quirk(const struct dmi_system_id *d) |
| 1129 | { |
| 1130 | battery_notification_delay_ms = 1000; |
| 1131 | return 0; |
| 1132 | } |
| 1133 | |
Lan Tianyu | a90b403 | 2014-01-06 22:50:37 +0800 | [diff] [blame] | 1134 | static struct dmi_system_id bat_dmi_table[] = { |
| 1135 | { |
Alexander Mezin | 3f5dc08 | 2014-06-04 02:01:22 +0700 | [diff] [blame] | 1136 | .callback = battery_bix_broken_package_quirk, |
Lan Tianyu | a90b403 | 2014-01-06 22:50:37 +0800 | [diff] [blame] | 1137 | .ident = "NEC LZ750/LS", |
| 1138 | .matches = { |
| 1139 | DMI_MATCH(DMI_SYS_VENDOR, "NEC"), |
| 1140 | DMI_MATCH(DMI_PRODUCT_NAME, "PC-LZ750LS"), |
| 1141 | }, |
| 1142 | }, |
Alexander Mezin | f43691c | 2014-06-04 02:01:23 +0700 | [diff] [blame] | 1143 | { |
| 1144 | .callback = battery_notification_delay_quirk, |
| 1145 | .ident = "Acer Aspire V5-573G", |
| 1146 | .matches = { |
| 1147 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), |
| 1148 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire V5-573G"), |
| 1149 | }, |
| 1150 | }, |
Lan Tianyu | a90b403 | 2014-01-06 22:50:37 +0800 | [diff] [blame] | 1151 | {}, |
| 1152 | }; |
| 1153 | |
Lan Tianyu | 75646e7 | 2014-07-07 15:47:12 +0800 | [diff] [blame] | 1154 | /* |
| 1155 | * Some machines'(E,G Lenovo Z480) ECs are not stable |
| 1156 | * during boot up and this causes battery driver fails to be |
| 1157 | * probed due to failure of getting battery information |
| 1158 | * from EC sometimes. After several retries, the operation |
| 1159 | * may work. So add retry code here and 20ms sleep between |
| 1160 | * every retries. |
| 1161 | */ |
| 1162 | static int acpi_battery_update_retry(struct acpi_battery *battery) |
| 1163 | { |
| 1164 | int retry, ret; |
| 1165 | |
| 1166 | for (retry = 5; retry; retry--) { |
| 1167 | ret = acpi_battery_update(battery, false); |
| 1168 | if (!ret) |
| 1169 | break; |
| 1170 | |
| 1171 | msleep(20); |
| 1172 | } |
| 1173 | return ret; |
| 1174 | } |
| 1175 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1176 | static int acpi_battery_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1178 | int result = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1179 | struct acpi_battery *battery = NULL; |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 1180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1182 | return -EINVAL; |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 1183 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1185 | return -ENOMEM; |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 1186 | battery->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
| 1188 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 1189 | device->driver_data = battery; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 1190 | mutex_init(&battery->lock); |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 1191 | mutex_init(&battery->sysfs_lock); |
Jiang Liu | 952c63e | 2013-06-29 00:24:38 +0800 | [diff] [blame] | 1192 | if (acpi_has_method(battery->device->handle, "_BIX")) |
Alexey Starikovskiy | c67fcd6 | 2009-10-15 14:31:44 +0400 | [diff] [blame] | 1193 | set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags); |
Lan Tianyu | 75646e7 | 2014-07-07 15:47:12 +0800 | [diff] [blame] | 1194 | |
| 1195 | result = acpi_battery_update_retry(battery); |
Stefan Hajnoczi | eb03cb0 | 2011-07-12 09:03:29 +0100 | [diff] [blame] | 1196 | if (result) |
| 1197 | goto fail; |
Lan Tianyu | 75646e7 | 2014-07-07 15:47:12 +0800 | [diff] [blame] | 1198 | |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 1199 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 1200 | result = acpi_battery_add_fs(device); |
| 1201 | #endif |
| 1202 | if (result) { |
| 1203 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 1204 | acpi_battery_remove_fs(device); |
| 1205 | #endif |
| 1206 | goto fail; |
| 1207 | } |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1208 | |
Stefan Hajnoczi | e80bba4 | 2011-07-12 09:03:28 +0100 | [diff] [blame] | 1209 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
| 1210 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
| 1211 | device->status.battery_present ? "present" : "absent"); |
| 1212 | |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1213 | battery->pm_nb.notifier_call = battery_notify; |
| 1214 | register_pm_notifier(&battery->pm_nb); |
| 1215 | |
Zhang Rui | e0d1f09 | 2014-05-28 15:23:38 +0800 | [diff] [blame] | 1216 | device_init_wakeup(&device->dev, 1); |
| 1217 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1218 | return result; |
Stefan Hajnoczi | e80bba4 | 2011-07-12 09:03:28 +0100 | [diff] [blame] | 1219 | |
| 1220 | fail: |
| 1221 | sysfs_remove_battery(battery); |
| 1222 | mutex_destroy(&battery->lock); |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 1223 | mutex_destroy(&battery->sysfs_lock); |
Stefan Hajnoczi | e80bba4 | 2011-07-12 09:03:28 +0100 | [diff] [blame] | 1224 | kfree(battery); |
| 1225 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | } |
| 1227 | |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 1228 | static int acpi_battery_remove(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1230 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1233 | return -EINVAL; |
Zhang Rui | e0d1f09 | 2014-05-28 15:23:38 +0800 | [diff] [blame] | 1234 | device_init_wakeup(&device->dev, 0); |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 1235 | battery = acpi_driver_data(device); |
Kyle McMartin | 25be582 | 2011-03-22 16:19:50 -0400 | [diff] [blame] | 1236 | unregister_pm_notifier(&battery->pm_nb); |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 1237 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 1238 | acpi_battery_remove_fs(device); |
| 1239 | #endif |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 1240 | sysfs_remove_battery(battery); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 1241 | mutex_destroy(&battery->lock); |
Sergey Senozhatsky | 69d94ec | 2011-08-06 01:34:08 +0300 | [diff] [blame] | 1242 | mutex_destroy(&battery->sysfs_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | kfree(battery); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1244 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | } |
| 1246 | |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 1247 | #ifdef CONFIG_PM_SLEEP |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1248 | /* this is needed to learn about changes made in suspended state */ |
Rafael J. Wysocki | a6f50dc | 2012-06-27 23:26:43 +0200 | [diff] [blame] | 1249 | static int acpi_battery_resume(struct device *dev) |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1250 | { |
| 1251 | struct acpi_battery *battery; |
Rafael J. Wysocki | a6f50dc | 2012-06-27 23:26:43 +0200 | [diff] [blame] | 1252 | |
| 1253 | if (!dev) |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1254 | return -EINVAL; |
Rafael J. Wysocki | a6f50dc | 2012-06-27 23:26:43 +0200 | [diff] [blame] | 1255 | |
| 1256 | battery = acpi_driver_data(to_acpi_device(dev)); |
| 1257 | if (!battery) |
| 1258 | return -EINVAL; |
| 1259 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 1260 | battery->update_time = 0; |
Lan Tianyu | 9e50bc1 | 2014-05-04 14:07:06 +0800 | [diff] [blame] | 1261 | acpi_battery_update(battery, true); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 1262 | return 0; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1263 | } |
Shuah Khan | 7f6895c | 2014-02-12 20:19:06 -0700 | [diff] [blame] | 1264 | #else |
| 1265 | #define acpi_battery_resume NULL |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 1266 | #endif |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 1267 | |
Rafael J. Wysocki | a6f50dc | 2012-06-27 23:26:43 +0200 | [diff] [blame] | 1268 | static SIMPLE_DEV_PM_OPS(acpi_battery_pm, NULL, acpi_battery_resume); |
| 1269 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 1270 | static struct acpi_driver acpi_battery_driver = { |
| 1271 | .name = "battery", |
| 1272 | .class = ACPI_BATTERY_CLASS, |
| 1273 | .ids = battery_device_ids, |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 1274 | .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 1275 | .ops = { |
| 1276 | .add = acpi_battery_add, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 1277 | .remove = acpi_battery_remove, |
Bjorn Helgaas | d940669 | 2009-04-30 09:35:47 -0600 | [diff] [blame] | 1278 | .notify = acpi_battery_notify, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 1279 | }, |
Rafael J. Wysocki | a6f50dc | 2012-06-27 23:26:43 +0200 | [diff] [blame] | 1280 | .drv.pm = &acpi_battery_pm, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 1281 | }; |
| 1282 | |
Linus Torvalds | b0cbc86 | 2009-04-11 12:45:20 -0700 | [diff] [blame] | 1283 | 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] | 1284 | { |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 1285 | if (acpi_disabled) |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 1286 | return; |
Lan Tianyu | a90b403 | 2014-01-06 22:50:37 +0800 | [diff] [blame] | 1287 | |
Alexander Mezin | 3f5dc08 | 2014-06-04 02:01:22 +0700 | [diff] [blame] | 1288 | dmi_check_system(bat_dmi_table); |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 1289 | |
| 1290 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 1291 | acpi_battery_dir = acpi_lock_battery_dir(); |
| 1292 | if (!acpi_battery_dir) |
| 1293 | return; |
| 1294 | #endif |
| 1295 | if (acpi_bus_register_driver(&acpi_battery_driver) < 0) { |
| 1296 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 1297 | acpi_unlock_battery_dir(acpi_battery_dir); |
| 1298 | #endif |
| 1299 | return; |
| 1300 | } |
| 1301 | return; |
Arjan van de Ven | 0f66af5 | 2009-01-10 14:19:05 -0500 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | static int __init acpi_battery_init(void) |
| 1305 | { |
| 1306 | async_schedule(acpi_battery_init_async, NULL); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 1307 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | } |
| 1309 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 1310 | static void __exit acpi_battery_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | acpi_bus_unregister_driver(&acpi_battery_driver); |
Lan Tianyu | 3a670cc | 2014-05-04 11:07:25 +0800 | [diff] [blame] | 1313 | #ifdef CONFIG_ACPI_PROCFS_POWER |
| 1314 | acpi_unlock_battery_dir(acpi_battery_dir); |
| 1315 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | } |
| 1317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | module_init(acpi_battery_init); |
| 1319 | module_exit(acpi_battery_exit); |