2008-07-25 02:45:39 -06:00
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/*
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* HP WMI hotkeys
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*
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* Copyright (C) 2008 Red Hat <mjg@redhat.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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#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/input.h>
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#include <acpi/acpi_drivers.h>
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#include <linux/platform_device.h>
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#include <linux/acpi.h>
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#include <linux/rfkill.h>
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#include <linux/string.h>
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MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
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MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
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MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
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#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
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#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
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#define HPWMI_DISPLAY_QUERY 0x1
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#define HPWMI_HDDTEMP_QUERY 0x2
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#define HPWMI_ALS_QUERY 0x3
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#define HPWMI_DOCK_QUERY 0x4
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#define HPWMI_WIRELESS_QUERY 0x5
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2008-09-02 15:36:03 -06:00
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#define HPWMI_HOTKEY_QUERY 0xc
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2008-07-25 02:45:39 -06:00
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static int __init hp_wmi_bios_setup(struct platform_device *device);
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static int __exit hp_wmi_bios_remove(struct platform_device *device);
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struct bios_args {
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u32 signature;
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u32 command;
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u32 commandtype;
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u32 datasize;
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u32 data;
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};
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struct bios_return {
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u32 sigpass;
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u32 return_code;
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u32 value;
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};
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struct key_entry {
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char type; /* See KE_* below */
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2008-09-02 15:36:03 -06:00
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u16 code;
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2008-07-25 02:45:39 -06:00
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u16 keycode;
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};
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enum { KE_KEY, KE_SW, KE_END };
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static struct key_entry hp_wmi_keymap[] = {
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{KE_SW, 0x01, SW_DOCK},
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{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
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{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
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2008-09-02 15:36:03 -06:00
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{KE_KEY, 0x20e6, KEY_PROG1},
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{KE_KEY, 0x2142, KEY_MEDIA},
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2008-10-18 21:27:28 -06:00
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{KE_KEY, 0x213b, KEY_INFO},
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2008-09-02 15:36:03 -06:00
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{KE_KEY, 0x231b, KEY_HELP},
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2008-07-25 02:45:39 -06:00
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{KE_END, 0}
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};
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static struct input_dev *hp_wmi_input_dev;
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static struct platform_device *hp_wmi_platform_dev;
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static struct rfkill *wifi_rfkill;
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static struct rfkill *bluetooth_rfkill;
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static struct rfkill *wwan_rfkill;
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static struct platform_driver hp_wmi_driver = {
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.driver = {
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.name = "hp-wmi",
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.owner = THIS_MODULE,
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},
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.probe = hp_wmi_bios_setup,
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.remove = hp_wmi_bios_remove,
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};
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static int hp_wmi_perform_query(int query, int write, int value)
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{
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struct bios_return bios_return;
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acpi_status status;
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union acpi_object *obj;
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struct bios_args args = {
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.signature = 0x55434553,
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.command = write ? 0x2 : 0x1,
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.commandtype = query,
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.datasize = write ? 0x4 : 0,
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.data = value,
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};
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struct acpi_buffer input = { sizeof(struct bios_args), &args };
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struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
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status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
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obj = output.pointer;
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if (!obj || obj->type != ACPI_TYPE_BUFFER)
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return -EINVAL;
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bios_return = *((struct bios_return *)obj->buffer.pointer);
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if (bios_return.return_code > 0)
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return bios_return.return_code * -1;
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else
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return bios_return.value;
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}
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static int hp_wmi_display_state(void)
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{
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return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0);
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}
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static int hp_wmi_hddtemp_state(void)
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{
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return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0);
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}
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static int hp_wmi_als_state(void)
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{
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return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0);
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}
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static int hp_wmi_dock_state(void)
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{
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return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
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}
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static int hp_wmi_wifi_set(void *data, enum rfkill_state state)
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{
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if (state)
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101);
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else
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100);
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}
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static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state)
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{
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if (state)
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202);
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else
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200);
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}
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static int hp_wmi_wwan_set(void *data, enum rfkill_state state)
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{
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if (state)
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404);
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else
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return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400);
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}
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static int hp_wmi_wifi_state(void)
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{
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int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
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if (wireless & 0x100)
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2008-09-02 15:36:00 -06:00
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return RFKILL_STATE_UNBLOCKED;
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2008-07-25 02:45:39 -06:00
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else
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2008-09-02 15:36:00 -06:00
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return RFKILL_STATE_SOFT_BLOCKED;
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2008-07-25 02:45:39 -06:00
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}
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static int hp_wmi_bluetooth_state(void)
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{
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int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
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if (wireless & 0x10000)
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2008-09-02 15:36:00 -06:00
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return RFKILL_STATE_UNBLOCKED;
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2008-07-25 02:45:39 -06:00
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else
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2008-09-02 15:36:00 -06:00
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return RFKILL_STATE_SOFT_BLOCKED;
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2008-07-25 02:45:39 -06:00
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}
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static int hp_wmi_wwan_state(void)
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{
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int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
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if (wireless & 0x1000000)
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2008-09-02 15:36:00 -06:00
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return RFKILL_STATE_UNBLOCKED;
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2008-07-25 02:45:39 -06:00
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else
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2008-09-02 15:36:00 -06:00
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return RFKILL_STATE_SOFT_BLOCKED;
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2008-07-25 02:45:39 -06:00
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}
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static ssize_t show_display(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_display_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_hddtemp_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_als(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_als_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int value = hp_wmi_dock_state();
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if (value < 0)
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return -EINVAL;
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return sprintf(buf, "%d\n", value);
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}
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static ssize_t set_als(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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u32 tmp = simple_strtoul(buf, NULL, 10);
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hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
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return count;
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}
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static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
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static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
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static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
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static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
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static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
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{
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struct key_entry *key;
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for (key = hp_wmi_keymap; key->type != KE_END; key++)
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if (code == key->code)
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return key;
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return NULL;
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}
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static struct key_entry *hp_wmi_get_entry_by_keycode(int keycode)
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{
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struct key_entry *key;
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for (key = hp_wmi_keymap; key->type != KE_END; key++)
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if (key->type == KE_KEY && keycode == key->keycode)
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return key;
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return NULL;
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}
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static int hp_wmi_getkeycode(struct input_dev *dev, int scancode, int *keycode)
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{
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struct key_entry *key = hp_wmi_get_entry_by_scancode(scancode);
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if (key && key->type == KE_KEY) {
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*keycode = key->keycode;
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return 0;
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}
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return -EINVAL;
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}
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static int hp_wmi_setkeycode(struct input_dev *dev, int scancode, int keycode)
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{
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struct key_entry *key;
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int old_keycode;
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if (keycode < 0 || keycode > KEY_MAX)
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return -EINVAL;
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key = hp_wmi_get_entry_by_scancode(scancode);
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if (key && key->type == KE_KEY) {
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old_keycode = key->keycode;
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key->keycode = keycode;
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set_bit(keycode, dev->keybit);
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if (!hp_wmi_get_entry_by_keycode(old_keycode))
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clear_bit(old_keycode, dev->keybit);
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return 0;
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}
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return -EINVAL;
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}
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2008-10-15 23:05:17 -06:00
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static void hp_wmi_notify(u32 value, void *context)
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2008-07-25 02:45:39 -06:00
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{
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struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
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static struct key_entry *key;
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union acpi_object *obj;
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wmi_get_event_data(value, &response);
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obj = (union acpi_object *)response.pointer;
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if (obj && obj->type == ACPI_TYPE_BUFFER && obj->buffer.length == 8) {
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int eventcode = *((u8 *) obj->buffer.pointer);
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2008-09-02 15:36:03 -06:00
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if (eventcode == 0x4)
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eventcode = hp_wmi_perform_query(HPWMI_HOTKEY_QUERY, 0,
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0);
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2008-07-25 02:45:39 -06:00
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key = hp_wmi_get_entry_by_scancode(eventcode);
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if (key) {
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switch (key->type) {
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case KE_KEY:
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input_report_key(hp_wmi_input_dev,
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key->keycode, 1);
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input_sync(hp_wmi_input_dev);
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input_report_key(hp_wmi_input_dev,
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key->keycode, 0);
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input_sync(hp_wmi_input_dev);
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break;
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case KE_SW:
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input_report_switch(hp_wmi_input_dev,
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key->keycode,
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hp_wmi_dock_state());
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input_sync(hp_wmi_input_dev);
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break;
|
|
|
|
}
|
|
|
|
} else if (eventcode == 0x5) {
|
|
|
|
if (wifi_rfkill)
|
2008-09-02 15:36:00 -06:00
|
|
|
rfkill_force_state(wifi_rfkill,
|
|
|
|
hp_wmi_wifi_state());
|
2008-07-25 02:45:39 -06:00
|
|
|
if (bluetooth_rfkill)
|
2008-09-02 15:36:00 -06:00
|
|
|
rfkill_force_state(bluetooth_rfkill,
|
|
|
|
hp_wmi_bluetooth_state());
|
2008-07-25 02:45:39 -06:00
|
|
|
if (wwan_rfkill)
|
2008-09-02 15:36:00 -06:00
|
|
|
rfkill_force_state(wwan_rfkill,
|
|
|
|
hp_wmi_wwan_state());
|
2008-07-25 02:45:39 -06:00
|
|
|
} else
|
|
|
|
printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
|
|
|
|
eventcode);
|
|
|
|
} else
|
|
|
|
printk(KERN_INFO "HP WMI: Unknown response received\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init hp_wmi_input_setup(void)
|
|
|
|
{
|
|
|
|
struct key_entry *key;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
hp_wmi_input_dev = input_allocate_device();
|
|
|
|
|
|
|
|
hp_wmi_input_dev->name = "HP WMI hotkeys";
|
|
|
|
hp_wmi_input_dev->phys = "wmi/input0";
|
|
|
|
hp_wmi_input_dev->id.bustype = BUS_HOST;
|
|
|
|
hp_wmi_input_dev->getkeycode = hp_wmi_getkeycode;
|
|
|
|
hp_wmi_input_dev->setkeycode = hp_wmi_setkeycode;
|
|
|
|
|
|
|
|
for (key = hp_wmi_keymap; key->type != KE_END; key++) {
|
|
|
|
switch (key->type) {
|
|
|
|
case KE_KEY:
|
|
|
|
set_bit(EV_KEY, hp_wmi_input_dev->evbit);
|
|
|
|
set_bit(key->keycode, hp_wmi_input_dev->keybit);
|
|
|
|
break;
|
|
|
|
case KE_SW:
|
|
|
|
set_bit(EV_SW, hp_wmi_input_dev->evbit);
|
|
|
|
set_bit(key->keycode, hp_wmi_input_dev->swbit);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
err = input_register_device(hp_wmi_input_dev);
|
|
|
|
|
|
|
|
if (err) {
|
|
|
|
input_free_device(hp_wmi_input_dev);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void cleanup_sysfs(struct platform_device *device)
|
|
|
|
{
|
|
|
|
device_remove_file(&device->dev, &dev_attr_display);
|
|
|
|
device_remove_file(&device->dev, &dev_attr_hddtemp);
|
|
|
|
device_remove_file(&device->dev, &dev_attr_als);
|
|
|
|
device_remove_file(&device->dev, &dev_attr_dock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init hp_wmi_bios_setup(struct platform_device *device)
|
|
|
|
{
|
|
|
|
int err;
|
2008-09-02 15:36:00 -06:00
|
|
|
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
|
2008-07-25 02:45:39 -06:00
|
|
|
|
|
|
|
err = device_create_file(&device->dev, &dev_attr_display);
|
|
|
|
if (err)
|
|
|
|
goto add_sysfs_error;
|
|
|
|
err = device_create_file(&device->dev, &dev_attr_hddtemp);
|
|
|
|
if (err)
|
|
|
|
goto add_sysfs_error;
|
|
|
|
err = device_create_file(&device->dev, &dev_attr_als);
|
|
|
|
if (err)
|
|
|
|
goto add_sysfs_error;
|
|
|
|
err = device_create_file(&device->dev, &dev_attr_dock);
|
|
|
|
if (err)
|
|
|
|
goto add_sysfs_error;
|
|
|
|
|
2008-09-02 15:36:00 -06:00
|
|
|
if (wireless & 0x1) {
|
|
|
|
wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN);
|
|
|
|
wifi_rfkill->name = "hp-wifi";
|
|
|
|
wifi_rfkill->state = hp_wmi_wifi_state();
|
|
|
|
wifi_rfkill->toggle_radio = hp_wmi_wifi_set;
|
|
|
|
wifi_rfkill->user_claim_unsupported = 1;
|
|
|
|
rfkill_register(wifi_rfkill);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (wireless & 0x2) {
|
|
|
|
bluetooth_rfkill = rfkill_allocate(&device->dev,
|
|
|
|
RFKILL_TYPE_BLUETOOTH);
|
|
|
|
bluetooth_rfkill->name = "hp-bluetooth";
|
|
|
|
bluetooth_rfkill->state = hp_wmi_bluetooth_state();
|
|
|
|
bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set;
|
|
|
|
bluetooth_rfkill->user_claim_unsupported = 1;
|
|
|
|
rfkill_register(bluetooth_rfkill);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (wireless & 0x4) {
|
|
|
|
wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN);
|
|
|
|
wwan_rfkill->name = "hp-wwan";
|
|
|
|
wwan_rfkill->state = hp_wmi_wwan_state();
|
|
|
|
wwan_rfkill->toggle_radio = hp_wmi_wwan_set;
|
|
|
|
wwan_rfkill->user_claim_unsupported = 1;
|
|
|
|
rfkill_register(wwan_rfkill);
|
|
|
|
}
|
2008-07-25 02:45:39 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
add_sysfs_error:
|
|
|
|
cleanup_sysfs(device);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __exit hp_wmi_bios_remove(struct platform_device *device)
|
|
|
|
{
|
|
|
|
cleanup_sysfs(device);
|
|
|
|
|
2008-09-02 15:36:00 -06:00
|
|
|
if (wifi_rfkill)
|
|
|
|
rfkill_unregister(wifi_rfkill);
|
|
|
|
if (bluetooth_rfkill)
|
|
|
|
rfkill_unregister(bluetooth_rfkill);
|
|
|
|
if (wwan_rfkill)
|
|
|
|
rfkill_unregister(wwan_rfkill);
|
2008-07-25 02:45:39 -06:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init hp_wmi_init(void)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (wmi_has_guid(HPWMI_EVENT_GUID)) {
|
|
|
|
err = wmi_install_notify_handler(HPWMI_EVENT_GUID,
|
|
|
|
hp_wmi_notify, NULL);
|
|
|
|
if (!err)
|
|
|
|
hp_wmi_input_setup();
|
|
|
|
}
|
|
|
|
|
|
|
|
if (wmi_has_guid(HPWMI_BIOS_GUID)) {
|
|
|
|
err = platform_driver_register(&hp_wmi_driver);
|
|
|
|
if (err)
|
|
|
|
return 0;
|
|
|
|
hp_wmi_platform_dev = platform_device_alloc("hp-wmi", -1);
|
|
|
|
if (!hp_wmi_platform_dev) {
|
|
|
|
platform_driver_unregister(&hp_wmi_driver);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
platform_device_add(hp_wmi_platform_dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit hp_wmi_exit(void)
|
|
|
|
{
|
|
|
|
if (wmi_has_guid(HPWMI_EVENT_GUID)) {
|
|
|
|
wmi_remove_notify_handler(HPWMI_EVENT_GUID);
|
|
|
|
input_unregister_device(hp_wmi_input_dev);
|
|
|
|
}
|
|
|
|
if (hp_wmi_platform_dev) {
|
|
|
|
platform_device_del(hp_wmi_platform_dev);
|
|
|
|
platform_driver_unregister(&hp_wmi_driver);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(hp_wmi_init);
|
|
|
|
module_exit(hp_wmi_exit);
|