2009-01-10 04:17:11 +08:00
|
|
|
/*
|
|
|
|
* Dell 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/acpi.h>
|
|
|
|
#include <linux/string.h>
|
2009-11-03 01:00:42 +08:00
|
|
|
#include <linux/dmi.h>
|
2009-01-10 04:17:11 +08:00
|
|
|
|
|
|
|
MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
|
|
|
|
MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
#define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492"
|
|
|
|
|
2009-11-03 01:00:42 +08:00
|
|
|
static int acpi_video;
|
|
|
|
|
2009-01-10 04:17:11 +08:00
|
|
|
MODULE_ALIAS("wmi:"DELL_EVENT_GUID);
|
|
|
|
|
|
|
|
struct key_entry {
|
|
|
|
char type; /* See KE_* below */
|
|
|
|
u16 code;
|
|
|
|
u16 keycode;
|
|
|
|
};
|
|
|
|
|
2009-06-11 03:40:47 +08:00
|
|
|
enum { KE_KEY, KE_SW, KE_IGNORE, KE_END };
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Certain keys are flagged as KE_IGNORE. All of these are either
|
|
|
|
* notifications (rather than requests for change) or are also sent
|
|
|
|
* via the keyboard controller so should not be sent again.
|
|
|
|
*/
|
2009-01-10 04:17:11 +08:00
|
|
|
|
2009-11-03 01:00:42 +08:00
|
|
|
static struct key_entry dell_legacy_wmi_keymap[] = {
|
2009-01-10 04:17:11 +08:00
|
|
|
{KE_KEY, 0xe045, KEY_PROG1},
|
2009-06-11 03:40:47 +08:00
|
|
|
{KE_KEY, 0xe009, KEY_EJECTCD},
|
|
|
|
|
|
|
|
/* These also contain the brightness level at offset 6 */
|
|
|
|
{KE_KEY, 0xe006, KEY_BRIGHTNESSUP},
|
|
|
|
{KE_KEY, 0xe005, KEY_BRIGHTNESSDOWN},
|
|
|
|
|
|
|
|
/* Battery health status button */
|
|
|
|
{KE_KEY, 0xe007, KEY_BATTERY},
|
|
|
|
|
|
|
|
/* This is actually for all radios. Although physically a
|
|
|
|
* switch, the notification does not provide an indication of
|
|
|
|
* state and so it should be reported as a key */
|
|
|
|
{KE_KEY, 0xe008, KEY_WLAN},
|
|
|
|
|
|
|
|
/* The next device is at offset 6, the active devices are at
|
|
|
|
offset 8 and the attached devices at offset 10 */
|
2009-11-03 01:00:42 +08:00
|
|
|
{KE_KEY, 0xe00b, KEY_SWITCHVIDEOMODE},
|
2009-06-11 03:40:47 +08:00
|
|
|
|
|
|
|
{KE_IGNORE, 0xe00c, KEY_KBDILLUMTOGGLE},
|
|
|
|
|
|
|
|
/* BIOS error detected */
|
|
|
|
{KE_IGNORE, 0xe00d, KEY_RESERVED},
|
|
|
|
|
|
|
|
/* Wifi Catcher */
|
|
|
|
{KE_KEY, 0xe011, KEY_PROG2},
|
|
|
|
|
|
|
|
/* Ambient light sensor toggle */
|
|
|
|
{KE_IGNORE, 0xe013, KEY_RESERVED},
|
|
|
|
|
|
|
|
{KE_IGNORE, 0xe020, KEY_MUTE},
|
|
|
|
{KE_IGNORE, 0xe02e, KEY_VOLUMEDOWN},
|
|
|
|
{KE_IGNORE, 0xe030, KEY_VOLUMEUP},
|
|
|
|
{KE_IGNORE, 0xe033, KEY_KBDILLUMUP},
|
|
|
|
{KE_IGNORE, 0xe034, KEY_KBDILLUMDOWN},
|
|
|
|
{KE_IGNORE, 0xe03a, KEY_CAPSLOCK},
|
|
|
|
{KE_IGNORE, 0xe045, KEY_NUMLOCK},
|
|
|
|
{KE_IGNORE, 0xe046, KEY_SCROLLLOCK},
|
2009-01-10 04:17:11 +08:00
|
|
|
{KE_END, 0}
|
|
|
|
};
|
|
|
|
|
2009-11-03 01:00:42 +08:00
|
|
|
static bool dell_new_hk_type;
|
|
|
|
|
|
|
|
struct dell_new_keymap_entry {
|
|
|
|
u16 scancode;
|
|
|
|
u16 keycode;
|
|
|
|
};
|
|
|
|
|
|
|
|
struct dell_hotkey_table {
|
|
|
|
struct dmi_header header;
|
|
|
|
struct dell_new_keymap_entry keymap[];
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct key_entry *dell_new_wmi_keymap;
|
|
|
|
|
|
|
|
static u16 bios_to_linux_keycode[256] = {
|
|
|
|
|
|
|
|
KEY_MEDIA, KEY_NEXTSONG, KEY_PLAYPAUSE, KEY_PREVIOUSSONG,
|
|
|
|
KEY_STOPCD, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
|
|
|
|
KEY_WWW, KEY_UNKNOWN, KEY_VOLUMEDOWN, KEY_MUTE,
|
|
|
|
KEY_VOLUMEUP, KEY_UNKNOWN, KEY_BATTERY, KEY_EJECTCD,
|
|
|
|
KEY_UNKNOWN, KEY_SLEEP, KEY_PROG1, KEY_BRIGHTNESSDOWN,
|
|
|
|
KEY_BRIGHTNESSUP, KEY_UNKNOWN, KEY_KBDILLUMTOGGLE,
|
|
|
|
KEY_UNKNOWN, KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN,
|
|
|
|
KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN, KEY_PROG2,
|
|
|
|
KEY_UNKNOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
|
|
KEY_PROG3
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
static struct key_entry *dell_wmi_keymap = dell_legacy_wmi_keymap;
|
|
|
|
|
2009-01-10 04:17:11 +08:00
|
|
|
static struct input_dev *dell_wmi_input_dev;
|
|
|
|
|
2010-03-09 14:37:10 +08:00
|
|
|
static struct key_entry *dell_wmi_get_entry_by_scancode(unsigned int code)
|
2009-01-10 04:17:11 +08:00
|
|
|
{
|
|
|
|
struct key_entry *key;
|
|
|
|
|
|
|
|
for (key = dell_wmi_keymap; key->type != KE_END; key++)
|
|
|
|
if (code == key->code)
|
|
|
|
return key;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2010-03-09 14:37:10 +08:00
|
|
|
static struct key_entry *dell_wmi_get_entry_by_keycode(unsigned int keycode)
|
2009-01-10 04:17:11 +08:00
|
|
|
{
|
|
|
|
struct key_entry *key;
|
|
|
|
|
|
|
|
for (key = dell_wmi_keymap; key->type != KE_END; key++)
|
|
|
|
if (key->type == KE_KEY && keycode == key->keycode)
|
|
|
|
return key;
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2010-03-09 14:37:10 +08:00
|
|
|
static int dell_wmi_getkeycode(struct input_dev *dev,
|
|
|
|
unsigned int scancode, unsigned int *keycode)
|
2009-01-10 04:17:11 +08:00
|
|
|
{
|
|
|
|
struct key_entry *key = dell_wmi_get_entry_by_scancode(scancode);
|
|
|
|
|
|
|
|
if (key && key->type == KE_KEY) {
|
|
|
|
*keycode = key->keycode;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2010-03-09 14:37:10 +08:00
|
|
|
static int dell_wmi_setkeycode(struct input_dev *dev,
|
|
|
|
unsigned int scancode, unsigned int keycode)
|
2009-01-10 04:17:11 +08:00
|
|
|
{
|
|
|
|
struct key_entry *key;
|
2010-03-09 14:37:10 +08:00
|
|
|
unsigned int old_keycode;
|
2009-01-10 04:17:11 +08:00
|
|
|
|
|
|
|
key = dell_wmi_get_entry_by_scancode(scancode);
|
|
|
|
if (key && key->type == KE_KEY) {
|
|
|
|
old_keycode = key->keycode;
|
|
|
|
key->keycode = keycode;
|
|
|
|
set_bit(keycode, dev->keybit);
|
|
|
|
if (!dell_wmi_get_entry_by_keycode(old_keycode))
|
|
|
|
clear_bit(old_keycode, dev->keybit);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dell_wmi_notify(u32 value, void *context)
|
|
|
|
{
|
|
|
|
struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
|
|
static struct key_entry *key;
|
|
|
|
union acpi_object *obj;
|
2009-12-27 12:02:24 +08:00
|
|
|
acpi_status status;
|
2009-01-10 04:17:11 +08:00
|
|
|
|
2009-12-27 12:02:24 +08:00
|
|
|
status = wmi_get_event_data(value, &response);
|
|
|
|
if (status != AE_OK) {
|
|
|
|
printk(KERN_INFO "dell-wmi: bad event status 0x%x\n", status);
|
|
|
|
return;
|
|
|
|
}
|
2009-01-10 04:17:11 +08:00
|
|
|
|
|
|
|
obj = (union acpi_object *)response.pointer;
|
|
|
|
|
|
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER) {
|
2009-11-03 01:00:42 +08:00
|
|
|
int reported_key;
|
|
|
|
u16 *buffer_entry = (u16 *)obj->buffer.pointer;
|
|
|
|
if (dell_new_hk_type && (buffer_entry[1] != 0x10)) {
|
|
|
|
printk(KERN_INFO "dell-wmi: Received unknown WMI event"
|
|
|
|
" (0x%x)\n", buffer_entry[1]);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dell_new_hk_type)
|
|
|
|
reported_key = (int)buffer_entry[2];
|
|
|
|
else
|
|
|
|
reported_key = (int)buffer_entry[1] & 0xffff;
|
|
|
|
|
|
|
|
key = dell_wmi_get_entry_by_scancode(reported_key);
|
|
|
|
|
|
|
|
if (!key) {
|
|
|
|
printk(KERN_INFO "dell-wmi: Unknown key %x pressed\n",
|
|
|
|
reported_key);
|
|
|
|
} else if ((key->keycode == KEY_BRIGHTNESSUP ||
|
|
|
|
key->keycode == KEY_BRIGHTNESSDOWN) && acpi_video) {
|
|
|
|
/* Don't report brightness notifications that will also
|
|
|
|
* come via ACPI */
|
|
|
|
return;
|
|
|
|
} else {
|
2009-01-10 04:17:11 +08:00
|
|
|
input_report_key(dell_wmi_input_dev, key->keycode, 1);
|
|
|
|
input_sync(dell_wmi_input_dev);
|
|
|
|
input_report_key(dell_wmi_input_dev, key->keycode, 0);
|
|
|
|
input_sync(dell_wmi_input_dev);
|
2009-11-03 01:00:42 +08:00
|
|
|
}
|
2009-01-10 04:17:11 +08:00
|
|
|
}
|
2009-12-04 17:10:09 +08:00
|
|
|
kfree(obj);
|
2009-01-10 04:17:11 +08:00
|
|
|
}
|
|
|
|
|
2009-11-03 01:00:42 +08:00
|
|
|
|
|
|
|
static void setup_new_hk_map(const struct dmi_header *dm)
|
|
|
|
{
|
|
|
|
|
|
|
|
int i;
|
|
|
|
int hotkey_num = (dm->length-4)/sizeof(struct dell_new_keymap_entry);
|
|
|
|
struct dell_hotkey_table *table =
|
|
|
|
container_of(dm, struct dell_hotkey_table, header);
|
|
|
|
|
|
|
|
dell_new_wmi_keymap = kzalloc((hotkey_num+1) *
|
|
|
|
sizeof(struct key_entry), GFP_KERNEL);
|
|
|
|
|
|
|
|
for (i = 0; i < hotkey_num; i++) {
|
|
|
|
dell_new_wmi_keymap[i].type = KE_KEY;
|
|
|
|
dell_new_wmi_keymap[i].code = table->keymap[i].scancode;
|
|
|
|
dell_new_wmi_keymap[i].keycode =
|
|
|
|
(table->keymap[i].keycode > 255) ? 0 :
|
|
|
|
bios_to_linux_keycode[table->keymap[i].keycode];
|
|
|
|
}
|
|
|
|
|
|
|
|
dell_new_wmi_keymap[i].type = KE_END;
|
|
|
|
dell_new_wmi_keymap[i].code = 0;
|
|
|
|
dell_new_wmi_keymap[i].keycode = 0;
|
|
|
|
|
|
|
|
dell_wmi_keymap = dell_new_wmi_keymap;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void find_hk_type(const struct dmi_header *dm, void *dummy)
|
|
|
|
{
|
|
|
|
|
|
|
|
if ((dm->type == 0xb2) && (dm->length > 6)) {
|
|
|
|
dell_new_hk_type = true;
|
|
|
|
setup_new_hk_map(dm);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-01-10 04:17:11 +08:00
|
|
|
static int __init dell_wmi_input_setup(void)
|
|
|
|
{
|
|
|
|
struct key_entry *key;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
dell_wmi_input_dev = input_allocate_device();
|
|
|
|
|
|
|
|
if (!dell_wmi_input_dev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
dell_wmi_input_dev->name = "Dell WMI hotkeys";
|
|
|
|
dell_wmi_input_dev->phys = "wmi/input0";
|
|
|
|
dell_wmi_input_dev->id.bustype = BUS_HOST;
|
|
|
|
dell_wmi_input_dev->getkeycode = dell_wmi_getkeycode;
|
|
|
|
dell_wmi_input_dev->setkeycode = dell_wmi_setkeycode;
|
|
|
|
|
|
|
|
for (key = dell_wmi_keymap; key->type != KE_END; key++) {
|
|
|
|
switch (key->type) {
|
|
|
|
case KE_KEY:
|
|
|
|
set_bit(EV_KEY, dell_wmi_input_dev->evbit);
|
|
|
|
set_bit(key->keycode, dell_wmi_input_dev->keybit);
|
|
|
|
break;
|
|
|
|
case KE_SW:
|
|
|
|
set_bit(EV_SW, dell_wmi_input_dev->evbit);
|
|
|
|
set_bit(key->keycode, dell_wmi_input_dev->swbit);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
err = input_register_device(dell_wmi_input_dev);
|
|
|
|
|
|
|
|
if (err) {
|
|
|
|
input_free_device(dell_wmi_input_dev);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init dell_wmi_init(void)
|
|
|
|
{
|
|
|
|
int err;
|
2009-12-27 10:51:38 +08:00
|
|
|
acpi_status status;
|
2009-01-10 04:17:11 +08:00
|
|
|
|
2009-12-26 03:49:35 +08:00
|
|
|
if (!wmi_has_guid(DELL_EVENT_GUID)) {
|
2009-12-18 14:19:42 +08:00
|
|
|
printk(KERN_WARNING "dell-wmi: No known WMI GUID found\n");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
2009-11-03 01:00:42 +08:00
|
|
|
|
2009-12-18 14:19:42 +08:00
|
|
|
dmi_walk(find_hk_type, NULL);
|
|
|
|
acpi_video = acpi_video_backlight_support();
|
2009-01-10 04:17:11 +08:00
|
|
|
|
2009-12-18 14:19:42 +08:00
|
|
|
err = dell_wmi_input_setup();
|
|
|
|
if (err)
|
|
|
|
return err;
|
2009-11-03 01:00:42 +08:00
|
|
|
|
2009-12-27 10:51:38 +08:00
|
|
|
status = wmi_install_notify_handler(DELL_EVENT_GUID,
|
2009-12-18 14:19:42 +08:00
|
|
|
dell_wmi_notify, NULL);
|
2009-12-27 10:51:38 +08:00
|
|
|
if (ACPI_FAILURE(status)) {
|
2009-12-18 14:19:42 +08:00
|
|
|
input_unregister_device(dell_wmi_input_dev);
|
|
|
|
printk(KERN_ERR
|
|
|
|
"dell-wmi: Unable to register notify handler - %d\n",
|
2009-12-27 10:51:38 +08:00
|
|
|
status);
|
|
|
|
return -ENODEV;
|
2009-12-18 14:19:42 +08:00
|
|
|
}
|
2009-01-10 04:17:11 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit dell_wmi_exit(void)
|
|
|
|
{
|
2009-12-18 14:19:42 +08:00
|
|
|
wmi_remove_notify_handler(DELL_EVENT_GUID);
|
|
|
|
input_unregister_device(dell_wmi_input_dev);
|
2009-01-10 04:17:11 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
module_init(dell_wmi_init);
|
|
|
|
module_exit(dell_wmi_exit);
|