c87992d1fa
Some ASUS ET2012E/I All-in-One machines that use a scalar board to control the brightness, and they only accept brightness up and down command. So, I introduced a get_scalar_command() function to pass the command to the scalar board through WMI. Besides, we have to store the brightness value locally, for we need the old value to know the brightness value is increasing or decreasing. BTW, since there is no way to retrieve the actual brightness(it would be a fixed value), and the max brightness value would be fixed to 1, so we have to keep passing the brightness up/down command when we reached the max brightness value or 0. Signed-off-by: AceLan Kao <acelan.kao@canonical.com> Signed-off-by: Corentin Chary <corentin.chary@gmail.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
235 lines
6.4 KiB
C
235 lines
6.4 KiB
C
/*
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* Eee PC WMI hotkey driver
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*
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* Copyright(C) 2010 Intel Corporation.
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* Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
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*
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* Portions based on wistron_btns.c:
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* Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
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* Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
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* Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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/input.h>
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#include <linux/input/sparse-keymap.h>
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#include <linux/dmi.h>
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#include <acpi/acpi_bus.h>
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#include "asus-wmi.h"
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#define EEEPC_WMI_FILE "eeepc-wmi"
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MODULE_AUTHOR("Corentin Chary <corentincj@iksaif.net>");
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MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
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MODULE_LICENSE("GPL");
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#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
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#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
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MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
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static struct quirk_entry *quirks;
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static bool hotplug_wireless;
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module_param(hotplug_wireless, bool, 0444);
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MODULE_PARM_DESC(hotplug_wireless,
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"Enable hotplug for wireless device. "
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"If your laptop needs that, please report to "
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"acpi4asus-user@lists.sourceforge.net.");
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/* Values for T101MT "Home" key */
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#define HOME_PRESS 0xe4
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#define HOME_HOLD 0xea
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#define HOME_RELEASE 0xe5
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static const struct key_entry eeepc_wmi_keymap[] = {
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/* Sleep already handled via generic ACPI code */
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{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
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{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
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{ KE_KEY, 0x32, { KEY_MUTE } },
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{ KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */
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{ KE_KEY, 0x5d, { KEY_WLAN } },
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{ KE_KEY, 0x6b, { KEY_TOUCHPAD_TOGGLE } }, /* Toggle Touchpad */
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{ KE_KEY, 0x82, { KEY_CAMERA } },
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{ KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } },
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{ KE_KEY, 0x88, { KEY_WLAN } },
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{ KE_KEY, 0xbd, { KEY_CAMERA } },
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{ KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } },
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{ KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */
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{ KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */
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{ KE_KEY, HOME_PRESS, { KEY_CONFIG } }, /* Home/Express gate key */
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{ KE_KEY, 0xe8, { KEY_SCREENLOCK } },
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{ KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } },
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{ KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } },
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{ KE_KEY, 0xec, { KEY_CAMERA_UP } },
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{ KE_KEY, 0xed, { KEY_CAMERA_DOWN } },
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{ KE_KEY, 0xee, { KEY_CAMERA_LEFT } },
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{ KE_KEY, 0xef, { KEY_CAMERA_RIGHT } },
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{ KE_KEY, 0xf3, { KEY_MENU } },
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{ KE_KEY, 0xf5, { KEY_HOMEPAGE } },
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{ KE_KEY, 0xf6, { KEY_ESC } },
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{ KE_END, 0},
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};
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static struct quirk_entry quirk_asus_unknown = {
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};
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static struct quirk_entry quirk_asus_1000h = {
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.hotplug_wireless = true,
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};
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static struct quirk_entry quirk_asus_et2012_type3 = {
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.scalar_panel_brightness = true,
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};
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static int dmi_matched(const struct dmi_system_id *dmi)
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{
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char *model;
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quirks = dmi->driver_data;
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model = (char *)dmi->matches[1].substr;
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if (unlikely(strncmp(model, "ET2012", 6) == 0)) {
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const struct dmi_device *dev = NULL;
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char oemstring[30];
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while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL,
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dev))) {
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if (sscanf(dev->name, "AEMS%24c", oemstring) == 1) {
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if (oemstring[18] == '3')
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quirks = &quirk_asus_et2012_type3;
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break;
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}
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}
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}
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return 1;
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}
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static struct dmi_system_id asus_quirks[] = {
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{
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.callback = dmi_matched,
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.ident = "ASUSTeK Computer INC. 1000H",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "1000H"),
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},
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.driver_data = &quirk_asus_1000h,
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},
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{
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.callback = dmi_matched,
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.ident = "ASUSTeK Computer INC. ET2012E/I",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
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DMI_MATCH(DMI_PRODUCT_NAME, "ET2012"),
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},
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.driver_data = &quirk_asus_unknown,
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},
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{},
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};
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static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,
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unsigned int *value, bool *autorelease)
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{
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switch (*code) {
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case HOME_PRESS:
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*value = 1;
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*autorelease = 0;
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break;
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case HOME_HOLD:
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*code = ASUS_WMI_KEY_IGNORE;
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break;
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case HOME_RELEASE:
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*code = HOME_PRESS;
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*value = 0;
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*autorelease = 0;
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break;
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}
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}
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static acpi_status eeepc_wmi_parse_device(acpi_handle handle, u32 level,
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void *context, void **retval)
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{
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pr_warn("Found legacy ATKD device (%s)\n", EEEPC_ACPI_HID);
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*(bool *)context = true;
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return AE_CTRL_TERMINATE;
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}
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static int eeepc_wmi_check_atkd(void)
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{
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acpi_status status;
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bool found = false;
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status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
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&found, NULL);
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if (ACPI_FAILURE(status) || !found)
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return 0;
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return -1;
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}
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static int eeepc_wmi_probe(struct platform_device *pdev)
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{
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if (eeepc_wmi_check_atkd()) {
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pr_warn("WMI device present, but legacy ATKD device is also "
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"present and enabled\n");
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pr_warn("You probably booted with acpi_osi=\"Linux\" or "
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"acpi_osi=\"!Windows 2009\"\n");
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pr_warn("Can't load eeepc-wmi, use default acpi_osi "
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"(preferred) or eeepc-laptop\n");
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return -EBUSY;
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}
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return 0;
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}
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static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
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{
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driver->wapf = -1;
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driver->quirks = &quirk_asus_unknown;
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driver->quirks->hotplug_wireless = hotplug_wireless;
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dmi_check_system(asus_quirks);
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driver->quirks = quirks;
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}
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static struct asus_wmi_driver asus_wmi_driver = {
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.name = EEEPC_WMI_FILE,
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.owner = THIS_MODULE,
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.event_guid = EEEPC_WMI_EVENT_GUID,
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.keymap = eeepc_wmi_keymap,
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.input_name = "Eee PC WMI hotkeys",
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.input_phys = EEEPC_WMI_FILE "/input0",
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.key_filter = eeepc_wmi_key_filter,
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.probe = eeepc_wmi_probe,
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.detect_quirks = eeepc_wmi_quirks,
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};
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static int __init eeepc_wmi_init(void)
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{
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return asus_wmi_register_driver(&asus_wmi_driver);
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}
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static void __exit eeepc_wmi_exit(void)
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{
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asus_wmi_unregister_driver(&asus_wmi_driver);
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}
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module_init(eeepc_wmi_init);
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module_exit(eeepc_wmi_exit);
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