Thomas Gleixner | c942fdd | 2019-05-27 08:55:06 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 3 | * button.c - ACPI Button Driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
| 6 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Vincent Legoll | b6aeab4 | 2017-05-20 20:38:13 +0200 | [diff] [blame] | 9 | #define pr_fmt(fmt) "ACPI: button: " fmt |
Lv Zheng | dfa46c5 | 2016-08-17 16:22:58 +0800 | [diff] [blame] | 10 | |
Randy Dunlap | 2c4c2a7 | 2018-07-07 08:25:01 -0700 | [diff] [blame] | 11 | #include <linux/compiler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/kernel.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/init.h> |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 15 | #include <linux/types.h> |
| 16 | #include <linux/proc_fs.h> |
| 17 | #include <linux/seq_file.h> |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 18 | #include <linux/input.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 19 | #include <linux/slab.h> |
Lv Zheng | 8b48463 | 2013-12-03 08:49:16 +0800 | [diff] [blame] | 20 | #include <linux/acpi.h> |
Hans de Goede | 9e811e1 | 2017-11-22 16:06:12 +0100 | [diff] [blame] | 21 | #include <linux/dmi.h> |
Andy Shevchenko | 6270da6 | 2013-03-11 09:17:04 +0000 | [diff] [blame] | 22 | #include <acpi/button.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #define ACPI_BUTTON_CLASS "button" |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 25 | #define ACPI_BUTTON_FILE_STATE "state" |
| 26 | #define ACPI_BUTTON_TYPE_UNKNOWN 0x00 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #define ACPI_BUTTON_NOTIFY_STATUS 0x80 |
| 28 | |
| 29 | #define ACPI_BUTTON_SUBCLASS_POWER "power" |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 30 | #define ACPI_BUTTON_DEVICE_NAME_POWER "Power Button" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #define ACPI_BUTTON_TYPE_POWER 0x01 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
| 33 | #define ACPI_BUTTON_SUBCLASS_SLEEP "sleep" |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 34 | #define ACPI_BUTTON_DEVICE_NAME_SLEEP "Sleep Button" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #define ACPI_BUTTON_TYPE_SLEEP 0x03 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | #define ACPI_BUTTON_SUBCLASS_LID "lid" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #define ACPI_BUTTON_DEVICE_NAME_LID "Lid Switch" |
| 39 | #define ACPI_BUTTON_TYPE_LID 0x05 |
| 40 | |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 41 | enum { |
| 42 | ACPI_BUTTON_LID_INIT_IGNORE, |
| 43 | ACPI_BUTTON_LID_INIT_OPEN, |
| 44 | ACPI_BUTTON_LID_INIT_METHOD, |
Hans de Goede | 593681e | 2019-10-26 22:24:32 +0200 | [diff] [blame] | 45 | ACPI_BUTTON_LID_INIT_DISABLED, |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 46 | }; |
| 47 | |
| 48 | static const char * const lid_init_state_str[] = { |
| 49 | [ACPI_BUTTON_LID_INIT_IGNORE] = "ignore", |
| 50 | [ACPI_BUTTON_LID_INIT_OPEN] = "open", |
| 51 | [ACPI_BUTTON_LID_INIT_METHOD] = "method", |
Hans de Goede | 593681e | 2019-10-26 22:24:32 +0200 | [diff] [blame] | 52 | [ACPI_BUTTON_LID_INIT_DISABLED] = "disabled", |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 53 | }; |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 54 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 55 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 56 | MODULE_DESCRIPTION("ACPI Button Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | MODULE_LICENSE("GPL"); |
| 58 | |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 59 | static const struct acpi_device_id button_device_ids[] = { |
| 60 | {ACPI_BUTTON_HID_LID, 0}, |
| 61 | {ACPI_BUTTON_HID_SLEEP, 0}, |
| 62 | {ACPI_BUTTON_HID_SLEEPF, 0}, |
| 63 | {ACPI_BUTTON_HID_POWER, 0}, |
| 64 | {ACPI_BUTTON_HID_POWERF, 0}, |
| 65 | {"", 0}, |
| 66 | }; |
| 67 | MODULE_DEVICE_TABLE(acpi, button_device_ids); |
| 68 | |
Hans de Goede | d7cd082 | 2019-10-26 22:24:33 +0200 | [diff] [blame] | 69 | /* Please keep this list sorted alphabetically by vendor and model */ |
| 70 | static const struct dmi_system_id dmi_lid_quirks[] = { |
Hans de Goede | 9e811e1 | 2017-11-22 16:06:12 +0100 | [diff] [blame] | 71 | { |
Hans de Goede | d7cd082 | 2019-10-26 22:24:33 +0200 | [diff] [blame] | 72 | /* GP-electronic T701, _LID method points to a floating GPIO */ |
Hans de Goede | 9e811e1 | 2017-11-22 16:06:12 +0100 | [diff] [blame] | 73 | .matches = { |
| 74 | DMI_MATCH(DMI_SYS_VENDOR, "Insyde"), |
| 75 | DMI_MATCH(DMI_PRODUCT_NAME, "T701"), |
| 76 | DMI_MATCH(DMI_BIOS_VERSION, "BYT70A.YNCHENG.WIN.007"), |
| 77 | }, |
Hans de Goede | d7cd082 | 2019-10-26 22:24:33 +0200 | [diff] [blame] | 78 | .driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_DISABLED, |
Hans de Goede | 9e811e1 | 2017-11-22 16:06:12 +0100 | [diff] [blame] | 79 | }, |
Hans de Goede | 932e1ba | 2019-10-26 22:24:34 +0200 | [diff] [blame] | 80 | { |
| 81 | /* |
| 82 | * Medion Akoya E2215T, notification of the LID device only |
| 83 | * happens on close, not on open and _LID always returns closed. |
| 84 | */ |
| 85 | .matches = { |
| 86 | DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), |
Hans de Goede | 7daaa06 | 2020-11-07 14:32:54 +0100 | [diff] [blame] | 87 | DMI_MATCH(DMI_PRODUCT_NAME, "E2215T"), |
| 88 | }, |
| 89 | .driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_OPEN, |
| 90 | }, |
| 91 | { |
| 92 | /* |
| 93 | * Medion Akoya E2228T, notification of the LID device only |
| 94 | * happens on close, not on open and _LID always returns closed. |
| 95 | */ |
| 96 | .matches = { |
| 97 | DMI_MATCH(DMI_SYS_VENDOR, "MEDION"), |
| 98 | DMI_MATCH(DMI_PRODUCT_NAME, "E2228T"), |
Hans de Goede | 932e1ba | 2019-10-26 22:24:34 +0200 | [diff] [blame] | 99 | }, |
| 100 | .driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_OPEN, |
| 101 | }, |
Jason Ekstrand | 0528904 | 2020-01-02 14:27:54 -0600 | [diff] [blame] | 102 | { |
| 103 | /* |
| 104 | * Razer Blade Stealth 13 late 2019, notification of the LID device |
| 105 | * only happens on close, not on open and _LID always returns closed. |
| 106 | */ |
| 107 | .matches = { |
| 108 | DMI_MATCH(DMI_SYS_VENDOR, "Razer"), |
| 109 | DMI_MATCH(DMI_PRODUCT_NAME, "Razer Blade Stealth 13 Late 2019"), |
| 110 | }, |
| 111 | .driver_data = (void *)(long)ACPI_BUTTON_LID_INIT_OPEN, |
| 112 | }, |
Hans de Goede | 9e811e1 | 2017-11-22 16:06:12 +0100 | [diff] [blame] | 113 | {} |
| 114 | }; |
| 115 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 116 | static int acpi_button_add(struct acpi_device *device); |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 117 | static int acpi_button_remove(struct acpi_device *device); |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 118 | static void acpi_button_notify(struct acpi_device *device, u32 event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 120 | #ifdef CONFIG_PM_SLEEP |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 121 | static int acpi_button_suspend(struct device *dev); |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 122 | static int acpi_button_resume(struct device *dev); |
Shuah Khan | 2de9fd1 | 2014-02-12 20:19:07 -0700 | [diff] [blame] | 123 | #else |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 124 | #define acpi_button_suspend NULL |
Shuah Khan | 2de9fd1 | 2014-02-12 20:19:07 -0700 | [diff] [blame] | 125 | #define acpi_button_resume NULL |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 126 | #endif |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 127 | static SIMPLE_DEV_PM_OPS(acpi_button_pm, acpi_button_suspend, acpi_button_resume); |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | static struct acpi_driver acpi_button_driver = { |
Len Brown | c2b6705 | 2007-02-12 23:33:40 -0500 | [diff] [blame] | 130 | .name = "button", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 131 | .class = ACPI_BUTTON_CLASS, |
Thomas Renninger | 1ba90e3 | 2007-07-23 14:44:41 +0200 | [diff] [blame] | 132 | .ids = button_device_ids, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 133 | .ops = { |
| 134 | .add = acpi_button_add, |
| 135 | .remove = acpi_button_remove, |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 136 | .notify = acpi_button_notify, |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 137 | }, |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 138 | .drv.pm = &acpi_button_pm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | }; |
| 140 | |
| 141 | struct acpi_button { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 142 | unsigned int type; |
| 143 | struct input_dev *input; |
| 144 | char phys[32]; /* for input device */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 145 | unsigned long pushed; |
Lv Zheng | dfa46c5 | 2016-08-17 16:22:58 +0800 | [diff] [blame] | 146 | int last_state; |
| 147 | ktime_t last_time; |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 148 | bool suspended; |
dmitry.torokhov@gmail.com | 21988a8 | 2020-10-04 22:11:25 -0700 | [diff] [blame] | 149 | bool lid_state_initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | }; |
| 151 | |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 152 | static struct acpi_device *lid_device; |
Hans de Goede | d7cd082 | 2019-10-26 22:24:33 +0200 | [diff] [blame] | 153 | static long lid_init_state = -1; |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 154 | |
Lv Zheng | dfa46c5 | 2016-08-17 16:22:58 +0800 | [diff] [blame] | 155 | static unsigned long lid_report_interval __read_mostly = 500; |
| 156 | module_param(lid_report_interval, ulong, 0644); |
| 157 | MODULE_PARM_DESC(lid_report_interval, "Interval (ms) between lid key events"); |
| 158 | |
Xiaofei Tan | effbe64 | 2021-03-27 20:08:19 +0800 | [diff] [blame] | 159 | /* FS Interface (/proc) */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 160 | static struct proc_dir_entry *acpi_button_dir; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 161 | static struct proc_dir_entry *acpi_lid_dir; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 162 | |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 163 | static int acpi_lid_evaluate_state(struct acpi_device *device) |
| 164 | { |
| 165 | unsigned long long lid_state; |
| 166 | acpi_status status; |
| 167 | |
| 168 | status = acpi_evaluate_integer(device->handle, "_LID", NULL, &lid_state); |
| 169 | if (ACPI_FAILURE(status)) |
| 170 | return -ENODEV; |
| 171 | |
| 172 | return lid_state ? 1 : 0; |
| 173 | } |
| 174 | |
| 175 | static int acpi_lid_notify_state(struct acpi_device *device, int state) |
| 176 | { |
| 177 | struct acpi_button *button = acpi_driver_data(device); |
Lv Zheng | dfa46c5 | 2016-08-17 16:22:58 +0800 | [diff] [blame] | 178 | ktime_t next_report; |
| 179 | bool do_update; |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 180 | |
Lv Zheng | dfa46c5 | 2016-08-17 16:22:58 +0800 | [diff] [blame] | 181 | /* |
| 182 | * In lid_init_state=ignore mode, if user opens/closes lid |
| 183 | * frequently with "open" missing, and "last_time" is also updated |
| 184 | * frequently, "close" cannot be delivered to the userspace. |
| 185 | * So "last_time" is only updated after a timeout or an actual |
| 186 | * switch. |
| 187 | */ |
| 188 | if (lid_init_state != ACPI_BUTTON_LID_INIT_IGNORE || |
| 189 | button->last_state != !!state) |
| 190 | do_update = true; |
| 191 | else |
| 192 | do_update = false; |
| 193 | |
| 194 | next_report = ktime_add(button->last_time, |
| 195 | ms_to_ktime(lid_report_interval)); |
| 196 | if (button->last_state == !!state && |
| 197 | ktime_after(ktime_get(), next_report)) { |
| 198 | /* Complain the buggy firmware */ |
| 199 | pr_warn_once("The lid device is not compliant to SW_LID.\n"); |
| 200 | |
| 201 | /* |
| 202 | * Send the unreliable complement switch event: |
| 203 | * |
| 204 | * On most platforms, the lid device is reliable. However |
| 205 | * there are exceptions: |
| 206 | * 1. Platforms returning initial lid state as "close" by |
| 207 | * default after booting/resuming: |
| 208 | * https://bugzilla.kernel.org/show_bug.cgi?id=89211 |
| 209 | * https://bugzilla.kernel.org/show_bug.cgi?id=106151 |
| 210 | * 2. Platforms never reporting "open" events: |
| 211 | * https://bugzilla.kernel.org/show_bug.cgi?id=106941 |
| 212 | * On these buggy platforms, the usage model of the ACPI |
| 213 | * lid device actually is: |
| 214 | * 1. The initial returning value of _LID may not be |
| 215 | * reliable. |
| 216 | * 2. The open event may not be reliable. |
| 217 | * 3. The close event is reliable. |
| 218 | * |
| 219 | * But SW_LID is typed as input switch event, the input |
| 220 | * layer checks if the event is redundant. Hence if the |
| 221 | * state is not switched, the userspace cannot see this |
| 222 | * platform triggered reliable event. By inserting a |
| 223 | * complement switch event, it then is guaranteed that the |
| 224 | * platform triggered reliable one can always be seen by |
| 225 | * the userspace. |
| 226 | */ |
| 227 | if (lid_init_state == ACPI_BUTTON_LID_INIT_IGNORE) { |
| 228 | do_update = true; |
| 229 | /* |
| 230 | * Do generate complement switch event for "close" |
| 231 | * as "close" is reliable and wrong "open" won't |
| 232 | * trigger unexpected behaviors. |
| 233 | * Do not generate complement switch event for |
| 234 | * "open" as "open" is not reliable and wrong |
| 235 | * "close" will trigger unexpected behaviors. |
| 236 | */ |
| 237 | if (!state) { |
| 238 | input_report_switch(button->input, |
| 239 | SW_LID, state); |
| 240 | input_sync(button->input); |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | /* Send the platform triggered reliable event */ |
| 245 | if (do_update) { |
Hans de Goede | ae35d65 | 2017-11-22 16:06:11 +0100 | [diff] [blame] | 246 | acpi_handle_debug(device->handle, "ACPI LID %s\n", |
| 247 | state ? "open" : "closed"); |
Lv Zheng | dfa46c5 | 2016-08-17 16:22:58 +0800 | [diff] [blame] | 248 | input_report_switch(button->input, SW_LID, !state); |
| 249 | input_sync(button->input); |
| 250 | button->last_state = !!state; |
| 251 | button->last_time = ktime_get(); |
| 252 | } |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 253 | |
Hans de Goede | e346d0c | 2019-10-26 22:24:36 +0200 | [diff] [blame] | 254 | return 0; |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 255 | } |
| 256 | |
Randy Dunlap | 2c4c2a7 | 2018-07-07 08:25:01 -0700 | [diff] [blame] | 257 | static int __maybe_unused acpi_button_state_seq_show(struct seq_file *seq, |
| 258 | void *offset) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 259 | { |
Bjorn Helgaas | 106c19e | 2009-04-08 15:39:59 +0000 | [diff] [blame] | 260 | struct acpi_device *device = seq->private; |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 261 | int state; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 262 | |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 263 | state = acpi_lid_evaluate_state(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 264 | seq_printf(seq, "state: %s\n", |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 265 | state < 0 ? "unsupported" : (state ? "open" : "closed")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 266 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 267 | } |
| 268 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 269 | static int acpi_button_add_fs(struct acpi_device *device) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 270 | { |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 271 | struct acpi_button *button = acpi_driver_data(device); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 272 | struct proc_dir_entry *entry = NULL; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 273 | int ret = 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 274 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 275 | /* procfs I/F for ACPI lid device only */ |
| 276 | if (button->type != ACPI_BUTTON_TYPE_LID) |
| 277 | return 0; |
| 278 | |
| 279 | if (acpi_button_dir || acpi_lid_dir) { |
Rafael J. Wysocki | 411e321 | 2021-02-03 19:46:14 +0100 | [diff] [blame] | 280 | pr_info("More than one Lid device found!\n"); |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 281 | return -EEXIST; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 282 | } |
| 283 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 284 | /* create /proc/acpi/button */ |
| 285 | acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir); |
| 286 | if (!acpi_button_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 287 | return -ENODEV; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 288 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 289 | /* create /proc/acpi/button/lid */ |
| 290 | acpi_lid_dir = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
| 291 | if (!acpi_lid_dir) { |
| 292 | ret = -ENODEV; |
| 293 | goto remove_button_dir; |
| 294 | } |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 295 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 296 | /* create /proc/acpi/button/lid/LID/ */ |
| 297 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_lid_dir); |
| 298 | if (!acpi_device_dir(device)) { |
| 299 | ret = -ENODEV; |
| 300 | goto remove_lid_dir; |
| 301 | } |
| 302 | |
| 303 | /* create /proc/acpi/button/lid/LID/state */ |
Christoph Hellwig | 3f3942a | 2018-05-15 15:57:23 +0200 | [diff] [blame] | 304 | entry = proc_create_single_data(ACPI_BUTTON_FILE_STATE, S_IRUGO, |
| 305 | acpi_device_dir(device), acpi_button_state_seq_show, |
| 306 | device); |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 307 | if (!entry) { |
| 308 | ret = -ENODEV; |
| 309 | goto remove_dev_dir; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 310 | } |
| 311 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 312 | done: |
| 313 | return ret; |
| 314 | |
| 315 | remove_dev_dir: |
| 316 | remove_proc_entry(acpi_device_bid(device), |
| 317 | acpi_lid_dir); |
| 318 | acpi_device_dir(device) = NULL; |
| 319 | remove_lid_dir: |
| 320 | remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
Benjamin Tissoires | e370cc8 | 2016-07-29 17:08:41 +0200 | [diff] [blame] | 321 | acpi_lid_dir = NULL; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 322 | remove_button_dir: |
| 323 | remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); |
Benjamin Tissoires | e370cc8 | 2016-07-29 17:08:41 +0200 | [diff] [blame] | 324 | acpi_button_dir = NULL; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 325 | goto done; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 326 | } |
| 327 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 328 | static int acpi_button_remove_fs(struct acpi_device *device) |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 329 | { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 330 | struct acpi_button *button = acpi_driver_data(device); |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 331 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 332 | if (button->type != ACPI_BUTTON_TYPE_LID) |
| 333 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 334 | |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 335 | remove_proc_entry(ACPI_BUTTON_FILE_STATE, |
| 336 | acpi_device_dir(device)); |
| 337 | remove_proc_entry(acpi_device_bid(device), |
| 338 | acpi_lid_dir); |
| 339 | acpi_device_dir(device) = NULL; |
| 340 | remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir); |
Benjamin Tissoires | e370cc8 | 2016-07-29 17:08:41 +0200 | [diff] [blame] | 341 | acpi_lid_dir = NULL; |
Zhang Rui | 912b742 | 2011-03-23 10:21:40 +0800 | [diff] [blame] | 342 | remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); |
Benjamin Tissoires | e370cc8 | 2016-07-29 17:08:41 +0200 | [diff] [blame] | 343 | acpi_button_dir = NULL; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 344 | |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 345 | return 0; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 346 | } |
| 347 | |
Xiaofei Tan | effbe64 | 2021-03-27 20:08:19 +0800 | [diff] [blame] | 348 | /* Driver Interface */ |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 349 | int acpi_lid_open(void) |
| 350 | { |
Jesse Barnes | 2c907b7 | 2009-10-07 14:39:46 -0700 | [diff] [blame] | 351 | if (!lid_device) |
| 352 | return -ENODEV; |
| 353 | |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 354 | return acpi_lid_evaluate_state(lid_device); |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 355 | } |
| 356 | EXPORT_SYMBOL(acpi_lid_open); |
| 357 | |
Ravi Chandra Sadineni | 7c058c7c | 2018-06-27 10:55:02 -0700 | [diff] [blame] | 358 | static int acpi_lid_update_state(struct acpi_device *device, |
| 359 | bool signal_wakeup) |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 360 | { |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 361 | int state; |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 362 | |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 363 | state = acpi_lid_evaluate_state(device); |
| 364 | if (state < 0) |
| 365 | return state; |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 366 | |
Ravi Chandra Sadineni | 7c058c7c | 2018-06-27 10:55:02 -0700 | [diff] [blame] | 367 | if (state && signal_wakeup) |
| 368 | acpi_pm_wakeup_event(&device->dev); |
| 369 | |
Lv Zheng | ee7e226 | 2016-06-01 18:10:42 +0800 | [diff] [blame] | 370 | return acpi_lid_notify_state(device, state); |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 371 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 373 | static void acpi_lid_initialize_state(struct acpi_device *device) |
| 374 | { |
dmitry.torokhov@gmail.com | 21988a8 | 2020-10-04 22:11:25 -0700 | [diff] [blame] | 375 | struct acpi_button *button = acpi_driver_data(device); |
| 376 | |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 377 | switch (lid_init_state) { |
| 378 | case ACPI_BUTTON_LID_INIT_OPEN: |
| 379 | (void)acpi_lid_notify_state(device, 1); |
| 380 | break; |
Lv Zheng | f369fdf | 2017-05-09 15:02:22 +0800 | [diff] [blame] | 381 | case ACPI_BUTTON_LID_INIT_METHOD: |
Ravi Chandra Sadineni | 7c058c7c | 2018-06-27 10:55:02 -0700 | [diff] [blame] | 382 | (void)acpi_lid_update_state(device, false); |
Lv Zheng | f369fdf | 2017-05-09 15:02:22 +0800 | [diff] [blame] | 383 | break; |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 384 | case ACPI_BUTTON_LID_INIT_IGNORE: |
| 385 | default: |
| 386 | break; |
| 387 | } |
dmitry.torokhov@gmail.com | 21988a8 | 2020-10-04 22:11:25 -0700 | [diff] [blame] | 388 | |
| 389 | button->lid_state_initialized = true; |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 390 | } |
| 391 | |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 392 | static void acpi_button_notify(struct acpi_device *device, u32 event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | { |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 394 | struct acpi_button *button = acpi_driver_data(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 395 | struct input_dev *input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | switch (event) { |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 398 | case ACPI_FIXED_HARDWARE_EVENT: |
| 399 | event = ACPI_BUTTON_NOTIFY_STATUS; |
Gustavo A. R. Silva | 57d2dd4 | 2020-07-07 15:09:37 -0500 | [diff] [blame] | 400 | fallthrough; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | case ACPI_BUTTON_NOTIFY_STATUS: |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 402 | input = button->input; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 403 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
dmitry.torokhov@gmail.com | 21988a8 | 2020-10-04 22:11:25 -0700 | [diff] [blame] | 404 | if (button->lid_state_initialized) |
Ravi Chandra Sadineni | 7c058c7c | 2018-06-27 10:55:02 -0700 | [diff] [blame] | 405 | acpi_lid_update_state(device, true); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 406 | } else { |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 407 | int keycode; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 408 | |
Rafael J. Wysocki | 33e4f80 | 2017-06-12 22:56:34 +0200 | [diff] [blame] | 409 | acpi_pm_wakeup_event(&device->dev); |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 410 | if (button->suspended) |
| 411 | break; |
| 412 | |
| 413 | keycode = test_bit(KEY_SLEEP, input->keybit) ? |
| 414 | KEY_SLEEP : KEY_POWER; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 415 | input_report_key(input, keycode, 1); |
| 416 | input_sync(input); |
| 417 | input_report_key(input, keycode, 0); |
Guillem Jover | df316e9 | 2008-10-24 00:28:33 +0300 | [diff] [blame] | 418 | input_sync(input); |
Rafael J. Wysocki | 1f83511 | 2011-01-06 23:36:01 +0100 | [diff] [blame] | 419 | |
Lan Tianyu | 0bf6368 | 2014-03-15 13:37:13 -0400 | [diff] [blame] | 420 | acpi_bus_generate_netlink_event( |
| 421 | device->pnp.device_class, |
| 422 | dev_name(&device->dev), |
| 423 | event, ++button->pushed); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 424 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | break; |
| 426 | default: |
Rafael J. Wysocki | 411e321 | 2021-02-03 19:46:14 +0100 | [diff] [blame] | 427 | acpi_handle_debug(device->handle, "Unsupported event [0x%x]\n", |
| 428 | event); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | break; |
| 430 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | } |
| 432 | |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 433 | #ifdef CONFIG_PM_SLEEP |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 434 | static int acpi_button_suspend(struct device *dev) |
| 435 | { |
| 436 | struct acpi_device *device = to_acpi_device(dev); |
| 437 | struct acpi_button *button = acpi_driver_data(device); |
| 438 | |
| 439 | button->suspended = true; |
| 440 | return 0; |
| 441 | } |
| 442 | |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 443 | static int acpi_button_resume(struct device *dev) |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 444 | { |
Rafael J. Wysocki | 1be532d | 2012-06-27 23:26:51 +0200 | [diff] [blame] | 445 | struct acpi_device *device = to_acpi_device(dev); |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 446 | struct acpi_button *button = acpi_driver_data(device); |
Bjorn Helgaas | 50a4da8 | 2009-04-08 15:39:38 +0000 | [diff] [blame] | 447 | |
Rafael J. Wysocki | e71eeb2 | 2014-07-23 00:59:04 +0200 | [diff] [blame] | 448 | button->suspended = false; |
dmitry.torokhov@gmail.com | 21988a8 | 2020-10-04 22:11:25 -0700 | [diff] [blame] | 449 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
Zhang Rui | 13e9621 | 2019-04-02 21:38:32 +0800 | [diff] [blame] | 450 | button->last_state = !!acpi_lid_evaluate_state(device); |
| 451 | button->last_time = ktime_get(); |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 452 | acpi_lid_initialize_state(device); |
Zhang Rui | 13e9621 | 2019-04-02 21:38:32 +0800 | [diff] [blame] | 453 | } |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 454 | return 0; |
| 455 | } |
Rafael J. Wysocki | 9069240 | 2012-08-09 23:00:02 +0200 | [diff] [blame] | 456 | #endif |
Alexey Starikovskiy | 23de5d9 | 2007-10-22 14:18:18 +0400 | [diff] [blame] | 457 | |
Hans de Goede | 84d3f6b | 2017-09-11 16:07:06 +0200 | [diff] [blame] | 458 | static int acpi_lid_input_open(struct input_dev *input) |
| 459 | { |
| 460 | struct acpi_device *device = input_get_drvdata(input); |
| 461 | struct acpi_button *button = acpi_driver_data(device); |
| 462 | |
| 463 | button->last_state = !!acpi_lid_evaluate_state(device); |
| 464 | button->last_time = ktime_get(); |
| 465 | acpi_lid_initialize_state(device); |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 470 | static int acpi_button_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 472 | struct acpi_button *button; |
| 473 | struct input_dev *input; |
Thomas Renninger | 620e112 | 2010-10-01 10:54:00 +0200 | [diff] [blame] | 474 | const char *hid = acpi_device_hid(device); |
| 475 | char *name, *class; |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 476 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
Hans de Goede | 593681e | 2019-10-26 22:24:32 +0200 | [diff] [blame] | 478 | if (!strcmp(hid, ACPI_BUTTON_HID_LID) && |
Hans de Goede | d7cd082 | 2019-10-26 22:24:33 +0200 | [diff] [blame] | 479 | lid_init_state == ACPI_BUTTON_LID_INIT_DISABLED) |
Hans de Goede | 9e811e1 | 2017-11-22 16:06:12 +0100 | [diff] [blame] | 480 | return -ENODEV; |
| 481 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 482 | button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | if (!button) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 484 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
Pavel Machek | db89b4f | 2008-09-22 14:37:34 -0700 | [diff] [blame] | 486 | device->driver_data = button; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 488 | button->input = input = input_allocate_device(); |
| 489 | if (!input) { |
| 490 | error = -ENOMEM; |
| 491 | goto err_free_button; |
| 492 | } |
| 493 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 494 | name = acpi_device_name(device); |
| 495 | class = acpi_device_class(device); |
| 496 | |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 497 | if (!strcmp(hid, ACPI_BUTTON_HID_POWER) || |
| 498 | !strcmp(hid, ACPI_BUTTON_HID_POWERF)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | button->type = ACPI_BUTTON_TYPE_POWER; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 500 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER); |
| 501 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); |
Bjorn Helgaas | d68b597 | 2009-04-08 15:40:04 +0000 | [diff] [blame] | 503 | } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) || |
| 504 | !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | button->type = ACPI_BUTTON_TYPE_SLEEP; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 506 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP); |
| 507 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 509 | } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | button->type = ACPI_BUTTON_TYPE_LID; |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 511 | strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID); |
| 512 | sprintf(class, "%s/%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID); |
Hans de Goede | 84d3f6b | 2017-09-11 16:07:06 +0200 | [diff] [blame] | 514 | input->open = acpi_lid_input_open; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 515 | } else { |
Rafael J. Wysocki | 411e321 | 2021-02-03 19:46:14 +0100 | [diff] [blame] | 516 | pr_info("Unsupported hid [%s]\n", hid); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 517 | error = -ENODEV; |
| 518 | goto err_free_input; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | } |
| 520 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 521 | error = acpi_button_add_fs(device); |
| 522 | if (error) |
| 523 | goto err_free_input; |
| 524 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 525 | snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 526 | |
Bjorn Helgaas | bf04a77 | 2009-04-08 15:39:54 +0000 | [diff] [blame] | 527 | input->name = name; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 528 | input->phys = button->phys; |
| 529 | input->id.bustype = BUS_HOST; |
| 530 | input->id.product = button->type; |
Andrey Borzenkov | 3b34e52 | 2008-03-04 15:06:35 -0800 | [diff] [blame] | 531 | input->dev.parent = &device->dev; |
Alexey Starikovskiy | b34a803 | 2005-08-03 17:55:21 -0400 | [diff] [blame] | 532 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | switch (button->type) { |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 534 | case ACPI_BUTTON_TYPE_POWER: |
Lan Tianyu | 763f527 | 2013-09-12 03:32:03 -0400 | [diff] [blame] | 535 | input_set_capability(input, EV_KEY, KEY_POWER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | break; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 537 | |
| 538 | case ACPI_BUTTON_TYPE_SLEEP: |
Lan Tianyu | 763f527 | 2013-09-12 03:32:03 -0400 | [diff] [blame] | 539 | input_set_capability(input, EV_KEY, KEY_SLEEP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | break; |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 541 | |
| 542 | case ACPI_BUTTON_TYPE_LID: |
Lan Tianyu | 763f527 | 2013-09-12 03:32:03 -0400 | [diff] [blame] | 543 | input_set_capability(input, EV_SW, SW_LID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | break; |
| 545 | } |
| 546 | |
Hans de Goede | 84d3f6b | 2017-09-11 16:07:06 +0200 | [diff] [blame] | 547 | input_set_drvdata(input, device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 548 | error = input_register_device(input); |
| 549 | if (error) |
Bjorn Helgaas | 373cfc3 | 2009-03-30 17:48:18 +0000 | [diff] [blame] | 550 | goto err_remove_fs; |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 551 | if (button->type == ACPI_BUTTON_TYPE_LID) { |
Jesse Barnes | 7e12715 | 2009-09-10 15:28:02 -0700 | [diff] [blame] | 552 | /* |
| 553 | * This assumes there's only one lid device, or if there are |
| 554 | * more we only care about the last one... |
| 555 | */ |
| 556 | lid_device = device; |
| 557 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
Rafael J. Wysocki | 33e4f80 | 2017-06-12 22:56:34 +0200 | [diff] [blame] | 559 | device_init_wakeup(&device->dev, true); |
Rafael J. Wysocki | 411e321 | 2021-02-03 19:46:14 +0100 | [diff] [blame] | 560 | pr_info("%s [%s]\n", name, acpi_device_bid(device)); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 561 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 563 | err_remove_fs: |
| 564 | acpi_button_remove_fs(device); |
| 565 | err_free_input: |
| 566 | input_free_device(input); |
| 567 | err_free_button: |
| 568 | kfree(button); |
| 569 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | } |
| 571 | |
Rafael J. Wysocki | 51fac83 | 2013-01-24 00:24:48 +0100 | [diff] [blame] | 572 | static int acpi_button_remove(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
Bjorn Helgaas | 1bce811 | 2009-04-08 15:39:49 +0000 | [diff] [blame] | 574 | struct acpi_button *button = acpi_driver_data(device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 576 | acpi_button_remove_fs(device); |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 577 | input_unregister_device(button->input); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | kfree(button); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 579 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | } |
| 581 | |
Kees Cook | e4dca7b | 2017-10-17 19:04:42 -0700 | [diff] [blame] | 582 | static int param_set_lid_init_state(const char *val, |
| 583 | const struct kernel_param *kp) |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 584 | { |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 585 | int i; |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 586 | |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 587 | i = sysfs_match_string(lid_init_state_str, val); |
| 588 | if (i < 0) |
| 589 | return i; |
| 590 | |
| 591 | lid_init_state = i; |
| 592 | pr_info("Initial lid state set to '%s'\n", lid_init_state_str[i]); |
| 593 | return 0; |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 594 | } |
| 595 | |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 596 | static int param_get_lid_init_state(char *buf, const struct kernel_param *kp) |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 597 | { |
Hans de Goede | 065bd4d | 2019-10-26 22:24:31 +0200 | [diff] [blame] | 598 | int i, c = 0; |
| 599 | |
| 600 | for (i = 0; i < ARRAY_SIZE(lid_init_state_str); i++) |
| 601 | if (i == lid_init_state) |
| 602 | c += sprintf(buf + c, "[%s] ", lid_init_state_str[i]); |
| 603 | else |
| 604 | c += sprintf(buf + c, "%s ", lid_init_state_str[i]); |
| 605 | |
| 606 | buf[c - 1] = '\n'; /* Replace the final space with a newline */ |
| 607 | |
| 608 | return c; |
Lv Zheng | 3540c32 | 2016-06-01 18:10:48 +0800 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | module_param_call(lid_init_state, |
| 612 | param_set_lid_init_state, param_get_lid_init_state, |
| 613 | NULL, 0644); |
| 614 | MODULE_PARM_DESC(lid_init_state, "Behavior for reporting LID initial state"); |
| 615 | |
Ard Biesheuvel | ac1e55b | 2018-04-23 11:16:56 +0200 | [diff] [blame] | 616 | static int acpi_button_register_driver(struct acpi_driver *driver) |
| 617 | { |
Hans de Goede | d7cd082 | 2019-10-26 22:24:33 +0200 | [diff] [blame] | 618 | const struct dmi_system_id *dmi_id; |
| 619 | |
| 620 | if (lid_init_state == -1) { |
| 621 | dmi_id = dmi_first_match(dmi_lid_quirks); |
| 622 | if (dmi_id) |
| 623 | lid_init_state = (long)dmi_id->driver_data; |
| 624 | else |
| 625 | lid_init_state = ACPI_BUTTON_LID_INIT_METHOD; |
| 626 | } |
| 627 | |
Ard Biesheuvel | ac1e55b | 2018-04-23 11:16:56 +0200 | [diff] [blame] | 628 | /* |
| 629 | * Modules such as nouveau.ko and i915.ko have a link time dependency |
| 630 | * on acpi_lid_open(), and would therefore not be loadable on ACPI |
| 631 | * capable kernels booted in non-ACPI mode if the return value of |
| 632 | * acpi_bus_register_driver() is returned from here with ACPI disabled |
| 633 | * when this driver is built as a module. |
| 634 | */ |
| 635 | if (acpi_disabled) |
| 636 | return 0; |
| 637 | |
| 638 | return acpi_bus_register_driver(driver); |
| 639 | } |
| 640 | |
| 641 | static void acpi_button_unregister_driver(struct acpi_driver *driver) |
| 642 | { |
| 643 | if (!acpi_disabled) |
| 644 | acpi_bus_unregister_driver(driver); |
| 645 | } |
| 646 | |
| 647 | module_driver(acpi_button_driver, acpi_button_register_driver, |
| 648 | acpi_button_unregister_driver); |