2 * toshiba_wmi.c - Toshiba WMI Hotkey Driver
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.
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.
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/types.h>
24 #include <linux/acpi.h>
25 #include <linux/input.h>
26 #include <linux/input/sparse-keymap.h>
28 MODULE_AUTHOR("Azael Avalos");
29 MODULE_DESCRIPTION("Toshiba WMI Hotkey Driver");
30 MODULE_LICENSE("GPL");
32 #define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
34 MODULE_ALIAS("wmi:"TOSHIBA_WMI_EVENT_GUID);
36 static struct input_dev *toshiba_wmi_input_dev;
38 static const struct key_entry toshiba_wmi_keymap[] __initconst = {
39 /* TODO: Add keymap values once found... */
40 /*{ KE_KEY, 0x00, { KEY_ } },*/
44 static void toshiba_wmi_notify(u32 value, void *context)
46 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
47 union acpi_object *obj;
50 status = wmi_get_event_data(value, &response);
51 if (ACPI_FAILURE(status)) {
52 pr_err("Bad event status 0x%x\n", status);
56 obj = (union acpi_object *)response.pointer;
60 /* TODO: Add proper checks once we have data */
61 pr_debug("Unknown event received, obj type %x\n", obj->type);
63 kfree(response.pointer);
66 static int __init toshiba_wmi_input_setup(void)
71 toshiba_wmi_input_dev = input_allocate_device();
72 if (!toshiba_wmi_input_dev)
75 toshiba_wmi_input_dev->name = "Toshiba WMI hotkeys";
76 toshiba_wmi_input_dev->phys = "wmi/input0";
77 toshiba_wmi_input_dev->id.bustype = BUS_HOST;
79 err = sparse_keymap_setup(toshiba_wmi_input_dev,
80 toshiba_wmi_keymap, NULL);
84 status = wmi_install_notify_handler(TOSHIBA_WMI_EVENT_GUID,
85 toshiba_wmi_notify, NULL);
86 if (ACPI_FAILURE(status)) {
91 err = input_register_device(toshiba_wmi_input_dev);
93 goto err_remove_notifier;
98 wmi_remove_notify_handler(TOSHIBA_WMI_EVENT_GUID);
100 sparse_keymap_free(toshiba_wmi_input_dev);
102 input_free_device(toshiba_wmi_input_dev);
106 static void toshiba_wmi_input_destroy(void)
108 wmi_remove_notify_handler(TOSHIBA_WMI_EVENT_GUID);
109 sparse_keymap_free(toshiba_wmi_input_dev);
110 input_unregister_device(toshiba_wmi_input_dev);
113 static int __init toshiba_wmi_init(void)
117 if (!wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
120 ret = toshiba_wmi_input_setup();
122 pr_err("Failed to setup input device\n");
126 pr_info("Toshiba WMI Hotkey Driver\n");
131 static void __exit toshiba_wmi_exit(void)
133 if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
134 toshiba_wmi_input_destroy();
137 module_init(toshiba_wmi_init);
138 module_exit(toshiba_wmi_exit);