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>
27 #include <linux/dmi.h>
29 MODULE_AUTHOR("Azael Avalos");
30 MODULE_DESCRIPTION("Toshiba WMI Hotkey Driver");
31 MODULE_LICENSE("GPL");
33 #define WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
35 MODULE_ALIAS("wmi:"WMI_EVENT_GUID);
37 static struct input_dev *toshiba_wmi_input_dev;
39 static const struct key_entry toshiba_wmi_keymap[] __initconst = {
40 /* TODO: Add keymap values once found... */
41 /*{ KE_KEY, 0x00, { KEY_ } },*/
45 static void toshiba_wmi_notify(u32 value, void *context)
47 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
48 union acpi_object *obj;
51 status = wmi_get_event_data(value, &response);
52 if (ACPI_FAILURE(status)) {
53 pr_err("Bad event status 0x%x\n", status);
57 obj = (union acpi_object *)response.pointer;
61 /* TODO: Add proper checks once we have data */
62 pr_debug("Unknown event received, obj type %x\n", obj->type);
64 kfree(response.pointer);
67 static struct dmi_system_id toshiba_wmi_dmi_table[] __initdata = {
69 .ident = "Toshiba laptop",
71 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
77 static int __init toshiba_wmi_input_setup(void)
82 toshiba_wmi_input_dev = input_allocate_device();
83 if (!toshiba_wmi_input_dev)
86 toshiba_wmi_input_dev->name = "Toshiba WMI hotkeys";
87 toshiba_wmi_input_dev->phys = "wmi/input0";
88 toshiba_wmi_input_dev->id.bustype = BUS_HOST;
90 err = sparse_keymap_setup(toshiba_wmi_input_dev,
91 toshiba_wmi_keymap, NULL);
95 status = wmi_install_notify_handler(WMI_EVENT_GUID,
96 toshiba_wmi_notify, NULL);
97 if (ACPI_FAILURE(status)) {
102 err = input_register_device(toshiba_wmi_input_dev);
104 goto err_remove_notifier;
109 wmi_remove_notify_handler(WMI_EVENT_GUID);
111 input_free_device(toshiba_wmi_input_dev);
115 static void toshiba_wmi_input_destroy(void)
117 wmi_remove_notify_handler(WMI_EVENT_GUID);
118 input_unregister_device(toshiba_wmi_input_dev);
121 static int __init toshiba_wmi_init(void)
125 if (!wmi_has_guid(WMI_EVENT_GUID) ||
126 !dmi_check_system(toshiba_wmi_dmi_table))
129 ret = toshiba_wmi_input_setup();
131 pr_err("Failed to setup input device\n");
135 pr_info("Toshiba WMI Hotkey Driver\n");
140 static void __exit toshiba_wmi_exit(void)
142 if (wmi_has_guid(WMI_EVENT_GUID))
143 toshiba_wmi_input_destroy();
146 module_init(toshiba_wmi_init);
147 module_exit(toshiba_wmi_exit);