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/*
* Eee PC WMI hotkey driver
*
* Copyright(C) 2010 Intel Corporation.
* Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
*
* Portions based on wistron_btns.c:
* Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
* Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
* Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/dmi.h>
#include <linux/fb.h>
#include <acpi/acpi_bus.h>
#include "asus-wmi.h"
#define EEEPC_WMI_FILE "eeepc-wmi"
MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>");
MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
MODULE_LICENSE("GPL");
#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
static bool hotplug_wireless;
module_param(hotplug_wireless, bool, 0444);
MODULE_PARM_DESC(hotplug_wireless,
"Enable hotplug for wireless device. "
"If your laptop needs that, please report to "
"acpi4asus-user@lists.sourceforge.net.");
/* Values for T101MT "Home" key */
#define HOME_PRESS 0xe4
#define HOME_HOLD 0xea
#define HOME_RELEASE 0xe5
static const struct key_entry eeepc_wmi_keymap[] = {
/* Sleep already handled via generic ACPI code */
{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
{ KE_KEY, 0x32, { KEY_MUTE } },
{ KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
{ KE_KEY, 0x5d, { KEY_WLAN } },
{ KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */
{ KE_KEY, 0x82, { KEY_CAMERA } },
{ KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
{ KE_KEY, 0x88, { KEY_WLAN } },
{ KE_KEY, 0xbd, { KEY_CAMERA } },
{ KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
{ KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
{ KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
{ KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */
{ KE_KEY, 0xe8, { KEY_SCREENLOCK } },
{ KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
{ KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
{ KE_KEY, 0xec, { KEY_CAMERA_UP } },
{ KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
{ KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
{ KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
{ KE_KEY, 0xf3, { KEY_MENU } },
{ KE_KEY, 0xf5, { KEY_HOMEPAGE } },
{ KE_KEY, 0xf6, { KEY_ESC } },
{ KE_END, 0},
};
static struct quirk_entry quirk_asus_unknown = {
};
static struct quirk_entry quirk_asus_1000h = {
.hotplug_wireless = true,
};
static struct quirk_entry quirk_asus_et2012_type1 = {
.store_backlight_power = true,
};
static struct quirk_entry quirk_asus_et2012_type3 = {
.scalar_panel_brightness = true,
.store_backlight_power = true,
};
static struct quirk_entry *quirks;
static void et2012_quirks(void)
{
const struct dmi_device *dev = NULL;
char oemstring[30];
while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) {
if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {
if (oemstring[18] == '1')
quirks = &quirk_asus_et2012_type1;
else if (oemstring[18] == '3')
quirks = &quirk_asus_et2012_type3;
break;
}
}
}
static int dmi_matched(const struct dmi_system_id *dmi)
{
char *model;
quirks = dmi->driver_data;
model = (char *)dmi->matches[1].substr;
if (unlikely(strncmp(model, "ET2012", 6) == 0))
et2012_quirks();
return 1;
}
static struct dmi_system_id asus_quirks[] = {
{
.callback = dmi_matched,
.ident = "ASUSTeK Computer INC. 1000H",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "1000H"),
},
.driver_data = &quirk_asus_1000h,
},
{
.callback = dmi_matched,
.ident = "ASUSTeK Computer INC. ET2012E/I",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"),
},
.driver_data = &quirk_asus_unknown,
},
{},
};
static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
unsigned int *value, bool *autorelease)
{
switch (*code) {
case HOME_PRESS:
*value = 1;
*autorelease = 0;
break;
case HOME_HOLD:
*code = ASUS_WMI_KEY_IGNORE;
break;
case HOME_RELEASE:
*code = HOME_PRESS;
*value = 0;
*autorelease = 0;
break;
}
}
static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
void *context, void **retval)
{
pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
*(bool *)context = true;
return AE_CTRL_TERMINATE;
}
static int eeepc_wmi_check_atkd(void)
{
acpi_status status;
bool found = false;
status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
&found, NULL);
if (ACPI_FAILURE(status) || !found)
return 0;
return -1;
}
static int eeepc_wmi_probe(struct platform_device *pdev)
{
if (eeepc_wmi_check_atkd()) {
pr_warn("WMI device present, but legacy ATKD device is also "
"present and enabled\n");
pr_warn("You probably booted with acpi_osi=\"Linux\" or "
"acpi_osi=\"!Windows 2009\"\n");
pr_warn("Can't load eeepc-wmi, use default acpi_osi "
"(preferred) or eeepc-laptop\n");
return -EBUSY;
}
return 0;
}
static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
{
quirks = &quirk_asus_unknown;
quirks->hotplug_wireless = hotplug_wireless;
dmi_check_system(asus_quirks);
driver->quirks = quirks;
driver->quirks->wapf = -1;
driver->panel_power = FB_BLANK_UNBLANK;
}
static struct asus_wmi_driver asus_wmi_driver = {
.name = EEEPC_WMI_FILE,
.owner = THIS_MODULE,
.event_guid = EEEPC_WMI_EVENT_GUID,
.keymap = eeepc_wmi_keymap,
.input_name = "Eee PC WMI hotkeys",
.input_phys = EEEPC_WMI_FILE "/input0",
.key_filter = eeepc_wmi_key_filter,
.probe = eeepc_wmi_probe,
.detect_quirks = eeepc_wmi_quirks,
};
static int __init eeepc_wmi_init(void)
{
return asus_wmi_register_driver(&asus_wmi_driver);
}
static void __exit eeepc_wmi_exit(void)
{
asus_wmi_unregister_driver(&asus_wmi_driver);
}
module_init(eeepc_wmi_init);
module_exit(eeepc_wmi_exit);
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