forked from luck/tmp_suning_uos_patched
a0bbaf8331
This should have been removed when the colour was removed from the LED device name. Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
201 lines
6.8 KiB
Plaintext
201 lines
6.8 KiB
Plaintext
Acer Laptop WMI Extras Driver
|
|
http://code.google.com/p/aceracpi
|
|
Version 0.1
|
|
9th February 2008
|
|
|
|
Copyright 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
|
|
|
|
acer-wmi is a driver to allow you to control various parts of your Acer laptop
|
|
hardware under Linux which are exposed via ACPI-WMI.
|
|
|
|
This driver completely replaces the old out-of-tree acer_acpi, which I am
|
|
currently maintaining for bug fixes only on pre-2.6.25 kernels. All development
|
|
work is now focused solely on acer-wmi.
|
|
|
|
Disclaimer
|
|
**********
|
|
|
|
Acer and Wistron have provided nothing towards the development acer_acpi or
|
|
acer-wmi. All information we have has been through the efforts of the developers
|
|
and the users to discover as much as possible about the hardware.
|
|
|
|
As such, I do warn that this could break your hardware - this is extremely
|
|
unlikely of course, but please bear this in mind.
|
|
|
|
Background
|
|
**********
|
|
|
|
acer-wmi is derived from acer_acpi, originally developed by Mark
|
|
Smith in 2005, then taken over by Carlos Corbacho in 2007, in order to activate
|
|
the wireless LAN card under a 64-bit version of Linux, as acerhk[1] (the
|
|
previous solution to the problem) relied on making 32 bit BIOS calls which are
|
|
not possible in kernel space from a 64 bit OS.
|
|
|
|
[1] acerhk: http://www.cakey.de/acerhk/
|
|
|
|
Supported Hardware
|
|
******************
|
|
|
|
Please see the website for the current list of known working hardare:
|
|
|
|
http://code.google.com/p/aceracpi/wiki/SupportedHardware
|
|
|
|
If your laptop is not listed, or listed as unknown, and works with acer-wmi,
|
|
please contact me with a copy of the DSDT.
|
|
|
|
If your Acer laptop doesn't work with acer-wmi, I would also like to see the
|
|
DSDT.
|
|
|
|
To send me the DSDT, as root/sudo:
|
|
|
|
cat /sys/firmware/acpi/tables/DSDT > dsdt
|
|
|
|
And send me the resulting 'dsdt' file.
|
|
|
|
Usage
|
|
*****
|
|
|
|
On Acer laptops, acer-wmi should already be autoloaded based on DMI matching.
|
|
For non-Acer laptops, until WMI based autoloading support is added, you will
|
|
need to manually load acer-wmi.
|
|
|
|
acer-wmi creates /sys/devices/platform/acer-wmi, and fills it with various
|
|
files whose usage is detailed below, which enables you to control some of the
|
|
following (varies between models):
|
|
|
|
* the wireless LAN card radio
|
|
* inbuilt Bluetooth adapter
|
|
* inbuilt 3G card
|
|
* mail LED of your laptop
|
|
* brightness of the LCD panel
|
|
|
|
Wireless
|
|
********
|
|
|
|
With regards to wireless, all acer-wmi does is enable the radio on the card. It
|
|
is not responsible for the wireless LED - once the radio is enabled, this is
|
|
down to the wireless driver for your card. So the behaviour of the wireless LED,
|
|
once you enable the radio, will depend on your hardware and driver combination.
|
|
|
|
e.g. With the BCM4318 on the Acer Aspire 5020 series:
|
|
|
|
ndiswrapper: Light blinks on when transmitting
|
|
b43: Solid light, blinks off when transmitting
|
|
|
|
Wireless radio control is unconditionally enabled - all Acer laptops that support
|
|
acer-wmi come with built-in wireless. However, should you feel so inclined to
|
|
ever wish to remove the card, or swap it out at some point, please get in touch
|
|
with me, as we may well be able to gain some data on wireless card detection.
|
|
|
|
To read the status of the wireless radio (0=off, 1=on):
|
|
cat /sys/devices/platform/acer-wmi/wireless
|
|
|
|
To enable the wireless radio:
|
|
echo 1 > /sys/devices/platform/acer-wmi/wireless
|
|
|
|
To disable the wireless radio:
|
|
echo 0 > /sys/devices/platform/acer-wmi/wireless
|
|
|
|
To set the state of the wireless radio when loading acer-wmi, pass:
|
|
wireless=X (where X is 0 or 1)
|
|
|
|
Bluetooth
|
|
*********
|
|
|
|
For bluetooth, this is an internal USB dongle, so once enabled, you will get
|
|
a USB device connection event, and a new USB device appears. When you disable
|
|
bluetooth, you get the reverse - a USB device disconnect event, followed by the
|
|
device disappearing again.
|
|
|
|
Bluetooth is autodetected by acer-wmi, so if you do not have a bluetooth module
|
|
installed in your laptop, this file won't exist (please be aware that it is
|
|
quite common for Acer not to fit bluetooth to their laptops - so just because
|
|
you have a bluetooth button on the laptop, doesn't mean that bluetooth is
|
|
installed).
|
|
|
|
For the adventurously minded - if you want to buy an internal bluetooth
|
|
module off the internet that is compatible with your laptop and fit it, then
|
|
it will work just fine with acer-wmi.
|
|
|
|
To read the status of the bluetooth module (0=off, 1=on):
|
|
cat /sys/devices/platform/acer-wmi/wireless
|
|
|
|
To enable the bluetooth module:
|
|
echo 1 > /sys/devices/platform/acer-wmi/bluetooth
|
|
|
|
To disable the bluetooth module:
|
|
echo 0 > /sys/devices/platform/acer-wmi/bluetooth
|
|
|
|
To set the state of the bluetooth module when loading acer-wmi, pass:
|
|
bluetooth=X (where X is 0 or 1)
|
|
|
|
3G
|
|
**
|
|
|
|
3G is currently not autodetected, so the 'threeg' file is always created under
|
|
sysfs. So far, no-one in possession of an Acer laptop with 3G built-in appears to
|
|
have tried Linux, or reported back, so we don't have any information on this.
|
|
|
|
If you have an Acer laptop that does have a 3G card in, please contact me so we
|
|
can properly detect these, and find out a bit more about them.
|
|
|
|
To read the status of the 3G card (0=off, 1=on):
|
|
cat /sys/devices/platform/acer-wmi/threeg
|
|
|
|
To enable the 3G card:
|
|
echo 1 > /sys/devices/platform/acer-wmi/threeg
|
|
|
|
To disable the 3G card:
|
|
echo 0 > /sys/devices/platform/acer-wmi/threeg
|
|
|
|
To set the state of the 3G card when loading acer-wmi, pass:
|
|
threeg=X (where X is 0 or 1)
|
|
|
|
Mail LED
|
|
********
|
|
|
|
This can be found in most older Acer laptops supported by acer-wmi, and many
|
|
newer ones - it is built into the 'mail' button, and blinks when active.
|
|
|
|
On newer (WMID) laptops though, we have no way of detecting the mail LED. If
|
|
your laptop identifies itself in dmesg as a WMID model, then please try loading
|
|
acer_acpi with:
|
|
|
|
force_series=2490
|
|
|
|
This will use a known alternative method of reading/ writing the mail LED. If
|
|
it works, please report back to me with the DMI data from your laptop so this
|
|
can be added to acer-wmi.
|
|
|
|
The LED is exposed through the LED subsystem, and can be found in:
|
|
|
|
/sys/devices/platform/acer-wmi/leds/acer-wmi::mail/
|
|
|
|
The mail LED is autodetected, so if you don't have one, the LED device won't
|
|
be registered.
|
|
|
|
Backlight
|
|
*********
|
|
|
|
The backlight brightness control is available on all acer-wmi supported
|
|
hardware. The maximum brightness level is usually 15, but on some newer laptops
|
|
it's 10 (this is again autodetected).
|
|
|
|
The backlight is exposed through the backlight subsystem, and can be found in:
|
|
|
|
/sys/devices/platform/acer-wmi/backlight/acer-wmi/
|
|
|
|
Credits
|
|
*******
|
|
|
|
Olaf Tauber, who did the real hard work when he developed acerhk
|
|
http://www.informatik.hu-berlin.de/~tauber/acerhk
|
|
All the authors of laptop ACPI modules in the kernel, whose work
|
|
was an inspiration in the early days of acer_acpi
|
|
Mathieu Segaud, who solved the problem with having to modprobe the driver
|
|
twice in acer_acpi 0.2.
|
|
Jim Ramsay, who added support for the WMID interface
|
|
Mark Smith, who started the original acer_acpi
|
|
|
|
And the many people who have used both acer_acpi and acer-wmi.
|