c942fddf87
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* toshiba_wmi.c - Toshiba WMI Hotkey Driver
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*
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* Copyright (C) 2015 Azael Avalos <coproscefalo@gmail.com>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/acpi.h>
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#include <linux/input.h>
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#include <linux/input/sparse-keymap.h>
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#include <linux/dmi.h>
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MODULE_AUTHOR("Azael Avalos");
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MODULE_DESCRIPTION("Toshiba WMI Hotkey Driver");
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MODULE_LICENSE("GPL");
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#define WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
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MODULE_ALIAS("wmi:"WMI_EVENT_GUID);
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static struct input_dev *toshiba_wmi_input_dev;
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static const struct key_entry toshiba_wmi_keymap[] __initconst = {
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/* TODO: Add keymap values once found... */
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/*{ KE_KEY, 0x00, { KEY_ } },*/
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{ KE_END, 0 }
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};
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static void toshiba_wmi_notify(u32 value, void *context)
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{
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struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
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union acpi_object *obj;
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acpi_status status;
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status = wmi_get_event_data(value, &response);
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if (ACPI_FAILURE(status)) {
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pr_err("Bad event status 0x%x\n", status);
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return;
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}
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obj = (union acpi_object *)response.pointer;
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if (!obj)
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return;
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/* TODO: Add proper checks once we have data */
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pr_debug("Unknown event received, obj type %x\n", obj->type);
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kfree(response.pointer);
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}
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static const struct dmi_system_id toshiba_wmi_dmi_table[] __initconst = {
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{
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.ident = "Toshiba laptop",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
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},
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},
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{}
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};
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static int __init toshiba_wmi_input_setup(void)
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{
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acpi_status status;
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int err;
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toshiba_wmi_input_dev = input_allocate_device();
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if (!toshiba_wmi_input_dev)
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return -ENOMEM;
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toshiba_wmi_input_dev->name = "Toshiba WMI hotkeys";
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toshiba_wmi_input_dev->phys = "wmi/input0";
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toshiba_wmi_input_dev->id.bustype = BUS_HOST;
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err = sparse_keymap_setup(toshiba_wmi_input_dev,
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toshiba_wmi_keymap, NULL);
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if (err)
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goto err_free_dev;
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status = wmi_install_notify_handler(WMI_EVENT_GUID,
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toshiba_wmi_notify, NULL);
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if (ACPI_FAILURE(status)) {
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err = -EIO;
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goto err_free_dev;
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}
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err = input_register_device(toshiba_wmi_input_dev);
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if (err)
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goto err_remove_notifier;
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return 0;
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err_remove_notifier:
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wmi_remove_notify_handler(WMI_EVENT_GUID);
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err_free_dev:
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input_free_device(toshiba_wmi_input_dev);
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return err;
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}
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static void toshiba_wmi_input_destroy(void)
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{
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wmi_remove_notify_handler(WMI_EVENT_GUID);
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input_unregister_device(toshiba_wmi_input_dev);
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}
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static int __init toshiba_wmi_init(void)
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{
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int ret;
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if (!wmi_has_guid(WMI_EVENT_GUID) ||
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!dmi_check_system(toshiba_wmi_dmi_table))
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return -ENODEV;
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ret = toshiba_wmi_input_setup();
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if (ret) {
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pr_err("Failed to setup input device\n");
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return ret;
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}
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pr_info("Toshiba WMI Hotkey Driver\n");
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return 0;
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}
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static void __exit toshiba_wmi_exit(void)
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{
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if (wmi_has_guid(WMI_EVENT_GUID))
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toshiba_wmi_input_destroy();
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}
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module_init(toshiba_wmi_init);
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module_exit(toshiba_wmi_exit);
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