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+/*
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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 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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+
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+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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+
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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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+
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+#include "asus-wmi.h"
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+
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+#define EEEPC_WMI_FILE "eeepc-wmi"
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+
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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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+
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+#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
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+
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+#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
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+
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+MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID);
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+
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+static bool hotplug_wireless;
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+
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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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+
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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_F13 } }, /* Disable Touchpad */
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+ { KE_KEY, 0x82, { KEY_CAMERA } },
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+ { KE_KEY, 0x88, { KEY_WLAN } },
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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, 0xe9, { KEY_BRIGHTNESS_ZERO } },
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+ { KE_END, 0},
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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_warning("Found legacy ATKD device (%s)", 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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+
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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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+
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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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+
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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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+
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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_warning("WMI device present, but legacy ATKD device is also "
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+ "present and enabled.");
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+ pr_warning("You probably booted with acpi_osi=\"Linux\" or "
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+ "acpi_osi=\"!Windows 2009\"");
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+ pr_warning("Can't load eeepc-wmi, use default acpi_osi "
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+ "(preferred) or eeepc-laptop");
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+ return -EBUSY;
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+ }
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+ return 0;
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+}
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+
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+static void eeepc_dmi_check(struct asus_wmi_driver *driver)
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+{
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+ const char *model;
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+
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+ model = dmi_get_system_info(DMI_PRODUCT_NAME);
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+ if (!model)
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+ return;
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+
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+ /*
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+ * Whitelist for wlan hotplug
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+ *
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+ * Asus 1000H needs the current hotplug code to handle
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+ * Fn+F2 correctly. We may add other Asus here later, but
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+ * it seems that most of the laptops supported by asus-wmi
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+ * don't need to be on this list
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+ */
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+ if (strcmp(model, "1000H") == 0) {
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+ driver->hotplug_wireless = true;
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+ pr_info("wlan hotplug enabled\n");
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+ }
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+}
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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->hotplug_wireless = hotplug_wireless;
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+ eeepc_dmi_check(driver);
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+}
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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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+ .probe = eeepc_wmi_probe,
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+ .quirks = eeepc_wmi_quirks,
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+};
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+
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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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+
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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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+
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+module_init(eeepc_wmi_init);
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+module_exit(eeepc_wmi_exit);
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Corentin Chary