Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * acpi_ac.c - ACPI AC Adapter Driver ($Revision: 27 $) |
| 3 | * |
| 4 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
| 5 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| 6 | * |
| 7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or (at |
| 12 | * your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 22 | * |
| 23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 24 | */ |
| 25 | |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/init.h> |
| 30 | #include <linux/types.h> |
Lan Tianyu | 0ab5bb6 | 2013-05-08 07:28:46 +0000 | [diff] [blame] | 31 | #include <linux/dmi.h> |
| 32 | #include <linux/delay.h> |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 33 | #include <linux/platform_device.h> |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 34 | #include <linux/power_supply.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <acpi/acpi_bus.h> |
| 36 | #include <acpi/acpi_drivers.h> |
| 37 | |
Len Brown | a192a95 | 2009-07-28 16:45:54 -0400 | [diff] [blame] | 38 | #define PREFIX "ACPI: " |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define ACPI_AC_CLASS "ac_adapter" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #define ACPI_AC_DEVICE_NAME "AC Adapter" |
| 42 | #define ACPI_AC_FILE_STATE "state" |
| 43 | #define ACPI_AC_NOTIFY_STATUS 0x80 |
| 44 | #define ACPI_AC_STATUS_OFFLINE 0x00 |
| 45 | #define ACPI_AC_STATUS_ONLINE 0x01 |
| 46 | #define ACPI_AC_STATUS_UNKNOWN 0xFF |
| 47 | |
| 48 | #define _COMPONENT ACPI_AC_COMPONENT |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 49 | ACPI_MODULE_NAME("ac"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 51 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 52 | MODULE_DESCRIPTION("ACPI AC Adapter Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | MODULE_LICENSE("GPL"); |
| 54 | |
Lan Tianyu | 0ab5bb6 | 2013-05-08 07:28:46 +0000 | [diff] [blame] | 55 | static int ac_sleep_before_get_state_ms; |
| 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | struct acpi_ac { |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 58 | struct power_supply charger; |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 59 | struct platform_device *pdev; |
Matthew Wilcox | 27663c5 | 2008-10-10 02:22:59 -0400 | [diff] [blame] | 60 | unsigned long long state; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | }; |
| 62 | |
Phil Carmody | 497888c | 2011-07-14 15:07:13 +0300 | [diff] [blame] | 63 | #define to_acpi_ac(x) container_of(x, struct acpi_ac, charger) |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | /* -------------------------------------------------------------------------- |
| 66 | AC Adapter Management |
| 67 | -------------------------------------------------------------------------- */ |
| 68 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 69 | static int acpi_ac_get_state(struct acpi_ac *ac) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | { |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 71 | acpi_status status; |
Lan Tianyu | 86b0cc1 | 2013-11-13 11:27:42 +0800 | [diff] [blame] | 72 | acpi_handle handle = ACPI_HANDLE(&ac->pdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Lan Tianyu | 86b0cc1 | 2013-11-13 11:27:42 +0800 | [diff] [blame] | 74 | status = acpi_evaluate_integer(handle, "_PSR", NULL, |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 75 | &ac->state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | if (ACPI_FAILURE(status)) { |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 77 | ACPI_EXCEPTION((AE_INFO, status, |
| 78 | "Error reading AC Adapter state")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | ac->state = ACPI_AC_STATUS_UNKNOWN; |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 80 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 82 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 83 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | } |
| 85 | |
Zhang Rui | 3151dbb | 2010-12-08 10:40:45 +0800 | [diff] [blame] | 86 | /* -------------------------------------------------------------------------- |
| 87 | sysfs I/F |
| 88 | -------------------------------------------------------------------------- */ |
| 89 | static int get_ac_property(struct power_supply *psy, |
| 90 | enum power_supply_property psp, |
| 91 | union power_supply_propval *val) |
| 92 | { |
| 93 | struct acpi_ac *ac = to_acpi_ac(psy); |
| 94 | |
| 95 | if (!ac) |
| 96 | return -ENODEV; |
| 97 | |
| 98 | if (acpi_ac_get_state(ac)) |
| 99 | return -ENODEV; |
| 100 | |
| 101 | switch (psp) { |
| 102 | case POWER_SUPPLY_PROP_ONLINE: |
| 103 | val->intval = ac->state; |
| 104 | break; |
| 105 | default: |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static enum power_supply_property ac_props[] = { |
| 112 | POWER_SUPPLY_PROP_ONLINE, |
| 113 | }; |
| 114 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | /* -------------------------------------------------------------------------- |
| 116 | Driver Model |
| 117 | -------------------------------------------------------------------------- */ |
| 118 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 119 | static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 121 | struct acpi_ac *ac = data; |
Lan Tianyu | 86b0cc1 | 2013-11-13 11:27:42 +0800 | [diff] [blame] | 122 | struct acpi_device *adev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | if (!ac) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 125 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | switch (event) { |
Len Brown | f163ff5 | 2008-06-14 01:26:37 -0400 | [diff] [blame] | 128 | default: |
| 129 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 130 | "Unsupported event [0x%x]\n", event)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | case ACPI_AC_NOTIFY_STATUS: |
Christian Lupien | 03d78252 | 2004-08-19 01:26:00 -0400 | [diff] [blame] | 132 | case ACPI_NOTIFY_BUS_CHECK: |
| 133 | case ACPI_NOTIFY_DEVICE_CHECK: |
Lan Tianyu | 0ab5bb6 | 2013-05-08 07:28:46 +0000 | [diff] [blame] | 134 | /* |
| 135 | * A buggy BIOS may notify AC first and then sleep for |
| 136 | * a specific time before doing actual operations in the |
| 137 | * EC event handler (_Qxx). This will cause the AC state |
| 138 | * reported by the ACPI event to be incorrect, so wait for a |
| 139 | * specific time for the EC event handler to make progress. |
| 140 | */ |
| 141 | if (ac_sleep_before_get_state_ms > 0) |
| 142 | msleep(ac_sleep_before_get_state_ms); |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | acpi_ac_get_state(ac); |
Lan Tianyu | 86b0cc1 | 2013-11-13 11:27:42 +0800 | [diff] [blame] | 145 | adev = ACPI_COMPANION(&ac->pdev->dev); |
| 146 | acpi_bus_generate_netlink_event(adev->pnp.device_class, |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 147 | dev_name(&ac->pdev->dev), |
| 148 | event, (u32) ac->state); |
Lan Tianyu | 86b0cc1 | 2013-11-13 11:27:42 +0800 | [diff] [blame] | 149 | acpi_notifier_call_chain(adev, event, (u32) ac->state); |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 150 | kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } |
| 152 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 153 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | } |
| 155 | |
Lan Tianyu | 0ab5bb6 | 2013-05-08 07:28:46 +0000 | [diff] [blame] | 156 | static int thinkpad_e530_quirk(const struct dmi_system_id *d) |
| 157 | { |
| 158 | ac_sleep_before_get_state_ms = 1000; |
| 159 | return 0; |
| 160 | } |
| 161 | |
| 162 | static struct dmi_system_id ac_dmi_table[] = { |
| 163 | { |
| 164 | .callback = thinkpad_e530_quirk, |
| 165 | .ident = "thinkpad e530", |
| 166 | .matches = { |
| 167 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
| 168 | DMI_MATCH(DMI_PRODUCT_NAME, "32597CG"), |
| 169 | }, |
| 170 | }, |
| 171 | {}, |
| 172 | }; |
| 173 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 174 | static int acpi_ac_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 176 | int result = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 177 | struct acpi_ac *ac = NULL; |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 178 | struct acpi_device *adev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 180 | if (!pdev) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 181 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Lan Tianyu | 86b0cc1 | 2013-11-13 11:27:42 +0800 | [diff] [blame] | 183 | adev = ACPI_COMPANION(&pdev->dev); |
| 184 | if (!adev) |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 185 | return -ENODEV; |
| 186 | |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 187 | ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | if (!ac) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 189 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 191 | strcpy(acpi_device_name(adev), ACPI_AC_DEVICE_NAME); |
| 192 | strcpy(acpi_device_class(adev), ACPI_AC_CLASS); |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 193 | ac->pdev = pdev; |
| 194 | platform_set_drvdata(pdev, ac); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | result = acpi_ac_get_state(ac); |
| 197 | if (result) |
| 198 | goto end; |
| 199 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 200 | ac->charger.name = acpi_device_bid(adev); |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 201 | ac->charger.type = POWER_SUPPLY_TYPE_MAINS; |
| 202 | ac->charger.properties = ac_props; |
| 203 | ac->charger.num_properties = ARRAY_SIZE(ac_props); |
| 204 | ac->charger.get_property = get_ac_property; |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 205 | result = power_supply_register(&pdev->dev, &ac->charger); |
Lan Tianyu | f197ac1 | 2012-07-20 13:29:16 +0800 | [diff] [blame] | 206 | if (result) |
| 207 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 209 | result = acpi_install_notify_handler(ACPI_HANDLE(&pdev->dev), |
Alexander Mezin | 50a2bc5 | 2014-01-04 09:07:59 +0700 | [diff] [blame^] | 210 | ACPI_ALL_NOTIFY, acpi_ac_notify_handler, ac); |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 211 | if (result) { |
| 212 | power_supply_unregister(&ac->charger); |
| 213 | goto end; |
| 214 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 215 | printk(KERN_INFO PREFIX "%s [%s] (%s)\n", |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 216 | acpi_device_name(adev), acpi_device_bid(adev), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 217 | ac->state ? "on-line" : "off-line"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Lan Tianyu | ab0fd67 | 2013-10-12 21:04:48 +0800 | [diff] [blame] | 219 | end: |
| 220 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | kfree(ac); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Lan Tianyu | 0ab5bb6 | 2013-05-08 07:28:46 +0000 | [diff] [blame] | 223 | dmi_check_system(ac_dmi_table); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 224 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 227 | #ifdef CONFIG_PM_SLEEP |
Rafael J. Wysocki | ccda706 | 2012-06-27 23:26:35 +0200 | [diff] [blame] | 228 | static int acpi_ac_resume(struct device *dev) |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 229 | { |
| 230 | struct acpi_ac *ac; |
| 231 | unsigned old_state; |
Rafael J. Wysocki | ccda706 | 2012-06-27 23:26:35 +0200 | [diff] [blame] | 232 | |
| 233 | if (!dev) |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 234 | return -EINVAL; |
Rafael J. Wysocki | ccda706 | 2012-06-27 23:26:35 +0200 | [diff] [blame] | 235 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 236 | ac = platform_get_drvdata(to_platform_device(dev)); |
Rafael J. Wysocki | ccda706 | 2012-06-27 23:26:35 +0200 | [diff] [blame] | 237 | if (!ac) |
| 238 | return -EINVAL; |
| 239 | |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 240 | old_state = ac->state; |
| 241 | if (acpi_ac_get_state(ac)) |
| 242 | return 0; |
| 243 | if (old_state != ac->state) |
| 244 | kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE); |
| 245 | return 0; |
| 246 | } |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 247 | #endif |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 248 | static SIMPLE_DEV_PM_OPS(acpi_ac_pm_ops, NULL, acpi_ac_resume); |
Alexey Starikovskiy | 5bfeca3 | 2007-11-14 17:00:39 -0800 | [diff] [blame] | 249 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 250 | static int acpi_ac_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | { |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 252 | struct acpi_ac *ac; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 254 | if (!pdev) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 255 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 257 | acpi_remove_notify_handler(ACPI_HANDLE(&pdev->dev), |
Alexander Mezin | 50a2bc5 | 2014-01-04 09:07:59 +0700 | [diff] [blame^] | 258 | ACPI_ALL_NOTIFY, acpi_ac_notify_handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 260 | ac = platform_get_drvdata(pdev); |
Alexey Starikovskiy | d5b4a3d | 2007-09-26 19:44:06 +0400 | [diff] [blame] | 261 | if (ac->charger.dev) |
| 262 | power_supply_unregister(&ac->charger); |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 263 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | kfree(ac); |
| 265 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 266 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 269 | static const struct acpi_device_id acpi_ac_match[] = { |
| 270 | { "ACPI0003", 0 }, |
| 271 | { } |
| 272 | }; |
| 273 | MODULE_DEVICE_TABLE(acpi, acpi_ac_match); |
| 274 | |
| 275 | static struct platform_driver acpi_ac_driver = { |
| 276 | .probe = acpi_ac_probe, |
| 277 | .remove = acpi_ac_remove, |
| 278 | .driver = { |
| 279 | .name = "acpi-ac", |
| 280 | .owner = THIS_MODULE, |
| 281 | .pm = &acpi_ac_pm_ops, |
| 282 | .acpi_match_table = ACPI_PTR(acpi_ac_match), |
| 283 | }, |
| 284 | }; |
| 285 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 286 | static int __init acpi_ac_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 288 | int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 290 | if (acpi_disabled) |
| 291 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 293 | result = platform_driver_register(&acpi_ac_driver); |
Lan Tianyu | ab0fd67 | 2013-10-12 21:04:48 +0800 | [diff] [blame] | 294 | if (result < 0) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 295 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 297 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | } |
| 299 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 300 | static void __exit acpi_ac_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | { |
Zhang Rui | cc8ef52 | 2013-09-25 20:39:45 +0800 | [diff] [blame] | 302 | platform_driver_unregister(&acpi_ac_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | module_init(acpi_ac_init); |
| 305 | module_exit(acpi_ac_exit); |