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sony-laptop: update documentation and Kconfig help

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Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
malattia@linux.it 2007-04-09 19:31:16 +02:00 committed by Len Brown
parent f6119b0275
commit 3d2b8a9f2c
2 changed files with 22 additions and 12 deletions
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25
Documentation/sony-laptop.txt
View File

@ -3,12 +3,18 @@ Sony Notebook Control Driver (SNC) Readme
Copyright (C) 2004- 2005 Stelian Pop <stelian@popies.net>
Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
This mini-driver drives the SNC device present in the ACPI BIOS of
the Sony Vaio laptops.
This mini-driver drives the SNC and SPIC device present in the ACPI BIOS of the
Sony Vaio laptops. This driver mixes both devices functions under the same
(hopefully consistent) interface. This also means that the sonypi driver is
obsoleted by sony-laptop now.
It gives access to some extra laptop functionalities. In its current
form, this driver let the user set or query the screen brightness
through the backlight subsystem and remove/apply power to some devices.
Fn keys (hotkeys):
------------------
Some models report hotkeys through the SNC or SPIC devices, such events are
reported both through the ACPI subsystem as acpi events and through the INPUT
subsystem. See the logs of acpid or /proc/acpi/event and
/proc/bus/input/devices to find out what those events are and which input
devices are created by the driver.
Backlight control:
------------------
@ -39,6 +45,8 @@ The files are:
audiopower power on/off the internal sound card
lanpower power on/off the internal ethernet card
(only in debug mode)
bluetoothpower power on/off the internal bluetooth device
fanspeed get/set the fan speed
Note that some files may be missing if they are not supported
by your particular laptop model.
@ -76,9 +84,9 @@ The sony-laptop driver creates, for some of those methods (the most
current ones found on several Vaio models), an entry under
/sys/devices/platform/sony-laptop, just like the 'cdpower' one.
You can create other entries corresponding to your own laptop methods by
further editing the source (see the 'sony_acpi_values' table, and add a new
further editing the source (see the 'sony_nc_values' table, and add a new
entry to this table with your get/set method names using the
HANDLE_NAMES macro).
SNC_HANDLE_NAMES macro).
Your mission, should you accept it, is to try finding out what
those entries are for, by reading/writing random values from/to those
@ -87,6 +95,9 @@ files and find out what is the impact on your laptop.
Should you find anything interesting, please report it back to me,
I will not disavow all knowledge of your actions :)
See also http://www.linux.it/~malattia/wiki/index.php/Sony_drivers for other
useful info.
Bugs/Limitations:
-----------------

9
drivers/misc/Kconfig
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@ -112,12 +112,11 @@ config SONY_LAPTOP
depends on X86 && ACPI
select BACKLIGHT_CLASS_DEVICE
---help---
This mini-driver drives the SNC device present in the ACPI BIOS of
the Sony Vaio laptops.
This mini-driver drives the SNC and SPIC devices present in the ACPI
BIOS of the Sony Vaio laptops.
It gives access to some extra laptop functionalities. In its current
form, this driver let the user set or query the screen brightness
through the backlight subsystem and remove/apply power to some
It gives access to some extra laptop functionalities like Bluetooth,
screen brightness control, Fn keys and allows powering on/off some
devices.
Read <file:Documentation/sony-laptop.txt> for more information.