projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 54290fa6 | 1 | /* |
| 05aa43cc | 2 | * Airplane mode button for HP & Xiaomi laptops |
| 54290fa6 | 3 | * |
| 05aa43cc | 4 | * Copyright (C) 2014-2017 Alex Hung <alex.hung@canonical.com> |
| 54290fa6 AH |
5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License, or | |
| 9 | * (at your option) any later version. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License along | |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/kernel.h> | |
| 22 | #include <linux/module.h> | |
| 23 | #include <linux/init.h> | |
| 24 | #include <linux/input.h> | |
| 25 | #include <linux/platform_device.h> | |
| 26 | #include <linux/acpi.h> | |
| 27 | #include <acpi/acpi_bus.h> | |
| 28 | ||
| 29 | MODULE_LICENSE("GPL"); | |
| 30 | MODULE_AUTHOR("Alex Hung"); | |
| 31 | MODULE_ALIAS("acpi*:HPQ6001:*"); | |
| 05aa43cc | 32 | MODULE_ALIAS("acpi*:WSTADEF:*"); |
| 54290fa6 AH |
33 | |
| 34 | static struct input_dev *hpwl_input_dev; | |
| 35 | ||
| 36 | static const struct acpi_device_id hpwl_ids[] = { | |
| 37 | {"HPQ6001", 0}, | |
| 05aa43cc | 38 | {"WSTADEF", 0}, |
| 54290fa6 AH |
39 | {"", 0}, |
| 40 | }; | |
| 41 | ||
| 42 | static int hp_wireless_input_setup(void) | |
| 43 | { | |
| 44 | int err; | |
| 45 | ||
| 46 | hpwl_input_dev = input_allocate_device(); | |
| 47 | if (!hpwl_input_dev) | |
| 48 | return -ENOMEM; | |
| 49 | ||
| 50 | hpwl_input_dev->name = "HP Wireless hotkeys"; | |
| 51 | hpwl_input_dev->phys = "hpq6001/input0"; | |
| 52 | hpwl_input_dev->id.bustype = BUS_HOST; | |
| 53 | hpwl_input_dev->evbit[0] = BIT(EV_KEY); | |
| 54 | set_bit(KEY_RFKILL, hpwl_input_dev->keybit); | |
| 55 | ||
| 56 | err = input_register_device(hpwl_input_dev); | |
| 57 | if (err) | |
| 58 | goto err_free_dev; | |
| 59 | ||
| 60 | return 0; | |
| 61 | ||
| 62 | err_free_dev: | |
| 63 | input_free_device(hpwl_input_dev); | |
| 64 | return err; | |
| 65 | } | |
| 66 | ||
| 67 | static void hp_wireless_input_destroy(void) | |
| 68 | { | |
| 69 | input_unregister_device(hpwl_input_dev); | |
| 70 | } | |
| 71 | ||
| 72 | static void hpwl_notify(struct acpi_device *acpi_dev, u32 event) | |
| 73 | { | |
| 74 | if (event != 0x80) { | |
| 75 | pr_info("Received unknown event (0x%x)\n", event); | |
| 76 | return; | |
| 77 | } | |
| 78 | ||
| 79 | input_report_key(hpwl_input_dev, KEY_RFKILL, 1); | |
| 80 | input_sync(hpwl_input_dev); | |
| 81 | input_report_key(hpwl_input_dev, KEY_RFKILL, 0); | |
| 82 | input_sync(hpwl_input_dev); | |
| 83 | } | |
| 84 | ||
| 85 | static int hpwl_add(struct acpi_device *device) | |
| 86 | { | |
| 87 | int err; | |
| 88 | ||
| 89 | err = hp_wireless_input_setup(); | |
| abe0b775 GS |
90 | if (err) |
| 91 | pr_err("Failed to setup hp wireless hotkeys\n"); | |
| 92 | ||
| 54290fa6 AH |
93 | return err; |
| 94 | } | |
| 95 | ||
| 96 | static int hpwl_remove(struct acpi_device *device) | |
| 97 | { | |
| 98 | hp_wireless_input_destroy(); | |
| 99 | return 0; | |
| 100 | } | |
| 101 | ||
| 102 | static struct acpi_driver hpwl_driver = { | |
| 103 | .name = "hp-wireless", | |
| 104 | .owner = THIS_MODULE, | |
| 105 | .ids = hpwl_ids, | |
| 106 | .ops = { | |
| 107 | .add = hpwl_add, | |
| 108 | .remove = hpwl_remove, | |
| 109 | .notify = hpwl_notify, | |
| 110 | }, | |
| 111 | }; | |
| 112 | ||
| 0b8dba15 | 113 | module_acpi_driver(hpwl_driver); |