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|
/*
* HP WMI hotkeys
*
* Copyright (C) 2008 Red Hat <mjg@redhat.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
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/input.h>
#include <acpi/acpi_drivers.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/rfkill.h>
#include <linux/string.h>
MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>");
MODULE_DESCRIPTION("HP laptop WMI hotkeys driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("wmi:95F24279-4D7B-4334-9387-ACCDC67EF61C");
MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
#define HPWMI_EVENT_GUID "95F24279-4D7B-4334-9387-ACCDC67EF61C"
#define HPWMI_BIOS_GUID "5FB7F034-2C63-45e9-BE91-3D44E2C707E4"
#define HPWMI_DISPLAY_QUERY 0x1
#define HPWMI_HDDTEMP_QUERY 0x2
#define HPWMI_ALS_QUERY 0x3
#define HPWMI_DOCK_QUERY 0x4
#define HPWMI_WIRELESS_QUERY 0x5
#define HPWMI_HOTKEY_QUERY 0xc
static int __init hp_wmi_bios_setup(struct platform_device *device);
static int __exit hp_wmi_bios_remove(struct platform_device *device);
struct bios_args {
u32 signature;
u32 command;
u32 commandtype;
u32 datasize;
u32 data;
};
struct bios_return {
u32 sigpass;
u32 return_code;
u32 value;
};
struct key_entry {
char type; /* See KE_* below */
u16 code;
u16 keycode;
};
enum { KE_KEY, KE_SW, KE_END };
static struct key_entry hp_wmi_keymap[] = {
{KE_SW, 0x01, SW_DOCK},
{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
{KE_KEY, 0x20e6, KEY_PROG1},
{KE_KEY, 0x2142, KEY_MEDIA},
{KE_KEY, 0x231b, KEY_HELP},
{KE_END, 0}
};
static struct input_dev *hp_wmi_input_dev;
static struct platform_device *hp_wmi_platform_dev;
static struct rfkill *wifi_rfkill;
static struct rfkill *bluetooth_rfkill;
static struct rfkill *wwan_rfkill;
static struct platform_driver hp_wmi_driver = {
.driver = {
.name = "hp-wmi",
.owner = THIS_MODULE,
},
.probe = hp_wmi_bios_setup,
.remove = hp_wmi_bios_remove,
};
static int hp_wmi_perform_query(int query, int write, int value)
{
struct bios_return bios_return;
acpi_status status;
union acpi_object *obj;
struct bios_args args = {
.signature = 0x55434553,
.command = write ? 0x2 : 0x1,
.commandtype = query,
.datasize = write ? 0x4 : 0,
.data = value,
};
struct acpi_buffer input = { sizeof(struct bios_args), &args };
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
status = wmi_evaluate_method(HPWMI_BIOS_GUID, 0, 0x3, &input, &output);
obj = output.pointer;
if (!obj || obj->type != ACPI_TYPE_BUFFER)
return -EINVAL;
bios_return = *((struct bios_return *)obj->buffer.pointer);
if (bios_return.return_code > 0)
return bios_return.return_code * -1;
else
return bios_return.value;
}
static int hp_wmi_display_state(void)
{
return hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, 0);
}
static int hp_wmi_hddtemp_state(void)
{
return hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, 0);
}
static int hp_wmi_als_state(void)
{
return hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, 0);
}
static int hp_wmi_dock_state(void)
{
return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
}
static int hp_wmi_wifi_set(void *data, enum rfkill_state state)
{
if (state)
return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101);
else
return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100);
}
static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state)
{
if (state)
return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202);
else
return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200);
}
static int hp_wmi_wwan_set(void *data, enum rfkill_state state)
{
if (state)
return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404);
else
return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400);
}
static int hp_wmi_wifi_state(void)
{
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
if (wireless & 0x100)
return RFKILL_STATE_UNBLOCKED;
else
return RFKILL_STATE_SOFT_BLOCKED;
}
static int hp_wmi_bluetooth_state(void)
{
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
if (wireless & 0x10000)
return RFKILL_STATE_UNBLOCKED;
else
return RFKILL_STATE_SOFT_BLOCKED;
}
static int hp_wmi_wwan_state(void)
{
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
if (wireless & 0x1000000)
return RFKILL_STATE_UNBLOCKED;
else
return RFKILL_STATE_SOFT_BLOCKED;
}
static ssize_t show_display(struct device *dev, struct device_attribute *attr,
char *buf)
{
int value = hp_wmi_display_state();
if (value < 0)
return -EINVAL;
return sprintf(buf, "%d\n", value);
}
static ssize_t show_hddtemp(struct device *dev, struct device_attribute *attr,
char *buf)
{
int value = hp_wmi_hddtemp_state();
if (value < 0)
return -EINVAL;
return sprintf(buf, "%d\n", value);
}
static ssize_t show_als(struct device *dev, struct device_attribute *attr,
char *buf)
{
int value = hp_wmi_als_state();
if (value < 0)
return -EINVAL;
return sprintf(buf, "%d\n", value);
}
static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
char *buf)
{
int value = hp_wmi_dock_state();
if (value < 0)
return -EINVAL;
return sprintf(buf, "%d\n", value);
}
static ssize_t set_als(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
u32 tmp = simple_strtoul(buf, NULL, 10);
hp_wmi_perform_query(HPWMI_ALS_QUERY, 1, tmp);
return count;
}
static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
static DEVICE_ATTR(als, S_IRUGO | S_IWUSR,
|