platform/x86: Toshiba WMI Hotkey Driver (14991fc7) · Commits · 戴 / test

MAINTAINERS

+6 −0

Original line number	Diff line number	Diff line
		@@ -10529,6 +10529,12 @@ L: platform-driver-x86@vger.kernel.org
		S: Maintained
		F: drivers/platform/x86/toshiba_haps.c

		TOSHIBA WMI HOTKEYS DRIVER
		M: Azael Avalos <coproscefalo@gmail.com>
		L: platform-driver-x86@vger.kernel.org
		S: Maintained
		F: drivers/platform/x86/toshiba-wmi.c

		TOSHIBA SMM DRIVER
		M: Jonathan Buzzard <jonathan@buzzard.org.uk>
		W: http://www.buzzard.org.uk/toshiba/

drivers/platform/x86/Kconfig

+18 −0

Original line number	Diff line number	Diff line
		@@ -700,6 +700,24 @@ config TOSHIBA_HAPS
		If you have a recent Toshiba laptop with a built-in accelerometer
		device, say Y.

		config TOSHIBA_WMI
		tristate "Toshiba WMI Hotkeys Driver (EXPERIMENTAL)"
		default n
		depends on ACPI_WMI
		depends on INPUT
		select INPUT_SPARSEKMAP
		---help---
		This driver adds hotkey monitoring support to some Toshiba models
		that manage the hotkeys via WMI events.

		WARNING: This driver is incomplete as it lacks a proper keymap and the
		*notify function only prints the ACPI event type value. Be warned that
		you will need to provide some information if you have a Toshiba model
		with WMI event hotkeys and want to help with the develpment of this
		driver.

		If you have a WMI-based hotkeys Toshiba laptop, say Y or M here.

		config ACPI_CMPC
		tristate "CMPC Laptop Extras"
		depends on X86 && ACPI

drivers/platform/x86/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,7 @@ obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o

		obj-$(CONFIG_TOSHIBA_BT_RFKILL) += toshiba_bluetooth.o
		obj-$(CONFIG_TOSHIBA_HAPS) += toshiba_haps.o
		obj-$(CONFIG_TOSHIBA_WMI) += toshiba-wmi.o
		obj-$(CONFIG_INTEL_SCU_IPC) += intel_scu_ipc.o
		obj-$(CONFIG_INTEL_SCU_IPC_UTIL) += intel_scu_ipcutil.o
		obj-$(CONFIG_INTEL_MFLD_THERMAL) += intel_mid_thermal.o

drivers/platform/x86/toshiba-wmi.c

0 → 100644

+138 −0

Original line number	Diff line number	Diff line
		/*
		* toshiba_wmi.c - Toshiba WMI Hotkey Driver
		*
		* Copyright (C) 2015 Azael Avalos <coproscefalo@gmail.com>
		*
		* 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.
		*
		*/

		#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/types.h>
		#include <linux/acpi.h>
		#include <linux/input.h>
		#include <linux/input/sparse-keymap.h>

		MODULE_AUTHOR("Azael Avalos");
		MODULE_DESCRIPTION("Toshiba WMI Hotkey Driver");
		MODULE_LICENSE("GPL");

		#define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"

		MODULE_ALIAS("wmi:"TOSHIBA_WMI_EVENT_GUID);

		static struct input_dev *toshiba_wmi_input_dev;

		static const struct key_entry toshiba_wmi_keymap[] __initconst = {
		/* TODO: Add keymap values once found... */
		/{ KE_KEY, 0x00, { KEY_ } },/
		{ KE_END, 0 }
		};

		static void toshiba_wmi_notify(u32 value, void *context)
		{
		struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
		union acpi_object *obj;
		acpi_status status;

		status = wmi_get_event_data(value, &response);
		if (ACPI_FAILURE(status)) {
		pr_err("Bad event status 0x%x\n", status);
		return;
		}

		obj = (union acpi_object *)response.pointer;
		if (!obj)
		return;

		/* TODO: Add proper checks once we have data */
		pr_debug("Unknown event received, obj type %x\n", obj->type);

		kfree(response.pointer);
		}

		static int __init toshiba_wmi_input_setup(void)
		{
		acpi_status status;
		int err;

		toshiba_wmi_input_dev = input_allocate_device();
		if (!toshiba_wmi_input_dev)
		return -ENOMEM;

		toshiba_wmi_input_dev->name = "Toshiba WMI hotkeys";
		toshiba_wmi_input_dev->phys = "wmi/input0";
		toshiba_wmi_input_dev->id.bustype = BUS_HOST;

		err = sparse_keymap_setup(toshiba_wmi_input_dev,
		toshiba_wmi_keymap, NULL);
		if (err)
		goto err_free_dev;

		status = wmi_install_notify_handler(TOSHIBA_WMI_EVENT_GUID,
		toshiba_wmi_notify, NULL);
		if (ACPI_FAILURE(status)) {
		err = -EIO;
		goto err_free_keymap;
		}

		err = input_register_device(toshiba_wmi_input_dev);
		if (err)
		goto err_remove_notifier;

		return 0;

		err_remove_notifier:
		wmi_remove_notify_handler(TOSHIBA_WMI_EVENT_GUID);
		err_free_keymap:
		sparse_keymap_free(toshiba_wmi_input_dev);
		err_free_dev:
		input_free_device(toshiba_wmi_input_dev);
		return err;
		}

		static void toshiba_wmi_input_destroy(void)
		{
		wmi_remove_notify_handler(TOSHIBA_WMI_EVENT_GUID);
		sparse_keymap_free(toshiba_wmi_input_dev);
		input_unregister_device(toshiba_wmi_input_dev);
		}

		static int __init toshiba_wmi_init(void)
		{
		int ret;

		if (!wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
		return -ENODEV;

		ret = toshiba_wmi_input_setup();
		if (ret) {
		pr_err("Failed to setup input device\n");
		return ret;
		}

		pr_info("Toshiba WMI Hotkey Driver\n");

		return 0;
		}

		static void __exit toshiba_wmi_exit(void)
		{
		if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
		toshiba_wmi_input_destroy();
		}

		module_init(toshiba_wmi_init);
		module_exit(toshiba_wmi_exit);

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