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authormalattia@linux.it <malattia@linux.it>2007-04-09 13:31:16 -0400
committerLen Brown <len.brown@intel.com>2007-04-10 16:01:19 -0400
commit3d2b8a9f2c26bc0fe03b3545d07245798b1b81b9 (patch)
tree628a84fe62c6dda721b408ac1126665727ebaa2f /Documentation/sony-laptop.txt
parentf6119b027578c21b544a98fd67e5f0b7e4fbea7d (diff)
sony-laptop: update documentation and Kconfig help
Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/sony-laptop.txt')
-rw-r--r--Documentation/sony-laptop.txt25
1 files changed, 18 insertions, 7 deletions
diff --git a/Documentation/sony-laptop.txt b/Documentation/sony-laptop.txt
index dfd26df056f4..7a5c1a81905c 100644
--- a/Documentation/sony-laptop.txt
+++ b/Documentation/sony-laptop.txt
@@ -3,12 +3,18 @@ Sony Notebook Control Driver (SNC) Readme
3 Copyright (C) 2004- 2005 Stelian Pop <stelian@popies.net> 3 Copyright (C) 2004- 2005 Stelian Pop <stelian@popies.net>
4 Copyright (C) 2007 Mattia Dongili <malattia@linux.it> 4 Copyright (C) 2007 Mattia Dongili <malattia@linux.it>
5 5
6This mini-driver drives the SNC device present in the ACPI BIOS of 6This mini-driver drives the SNC and SPIC device present in the ACPI BIOS of the
7the Sony Vaio laptops. 7Sony Vaio laptops. This driver mixes both devices functions under the same
8(hopefully consistent) interface. This also means that the sonypi driver is
9obsoleted by sony-laptop now.
8 10
9It gives access to some extra laptop functionalities. In its current 11Fn keys (hotkeys):
10form, this driver let the user set or query the screen brightness 12------------------
11through the backlight subsystem and remove/apply power to some devices. 13Some models report hotkeys through the SNC or SPIC devices, such events are
14reported both through the ACPI subsystem as acpi events and through the INPUT
15subsystem. See the logs of acpid or /proc/acpi/event and
16/proc/bus/input/devices to find out what those events are and which input
17devices are created by the driver.
12 18
13Backlight control: 19Backlight control:
14------------------ 20------------------
@@ -39,6 +45,8 @@ The files are:
39 audiopower power on/off the internal sound card 45 audiopower power on/off the internal sound card
40 lanpower power on/off the internal ethernet card 46 lanpower power on/off the internal ethernet card
41 (only in debug mode) 47 (only in debug mode)
48 bluetoothpower power on/off the internal bluetooth device
49 fanspeed get/set the fan speed
42 50
43Note that some files may be missing if they are not supported 51Note that some files may be missing if they are not supported
44by your particular laptop model. 52by your particular laptop model.
@@ -76,9 +84,9 @@ The sony-laptop driver creates, for some of those methods (the most
76current ones found on several Vaio models), an entry under 84current ones found on several Vaio models), an entry under
77/sys/devices/platform/sony-laptop, just like the 'cdpower' one. 85/sys/devices/platform/sony-laptop, just like the 'cdpower' one.
78You can create other entries corresponding to your own laptop methods by 86You can create other entries corresponding to your own laptop methods by
79further editing the source (see the 'sony_acpi_values' table, and add a new 87further editing the source (see the 'sony_nc_values' table, and add a new
80entry to this table with your get/set method names using the 88entry to this table with your get/set method names using the
81HANDLE_NAMES macro). 89SNC_HANDLE_NAMES macro).
82 90
83Your mission, should you accept it, is to try finding out what 91Your mission, should you accept it, is to try finding out what
84those entries are for, by reading/writing random values from/to those 92those 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.
87Should you find anything interesting, please report it back to me, 95Should you find anything interesting, please report it back to me,
88I will not disavow all knowledge of your actions :) 96I will not disavow all knowledge of your actions :)
89 97
98See also http://www.linux.it/~malattia/wiki/index.php/Sony_drivers for other
99useful info.
100
90Bugs/Limitations: 101Bugs/Limitations:
91----------------- 102-----------------
92 103