blob: f05b897805e56ca64ff4a92c8e879ef00d03a103 [file] [log] [blame]
Greg Kroah-Hartman2d70b732011-03-11 12:41:19 -05001What: /sys/devices/platform/samsung/performance_level
2Date: January 1, 2010
3KernelVersion: 2.6.33
4Contact: Greg Kroah-Hartman <gregkh@suse.de>
5Description: Some Samsung laptops have different "performance levels"
6 that are can be modified by a function key, and by this
7 sysfs file. These values don't always make a whole lot
8 of sense, but some users like to modify them to keep
9 their fans quiet at all costs. Reading from this file
10 will show the current performance level. Writing to the
11 file can change this value.
12 Valid options:
13 "silent"
14 "normal"
15 "overclock"
16 Note that not all laptops support all of these options.
17 Specifically, not all support the "overclock" option,
18 and it's still unknown if this value even changes
19 anything, other than making the user feel a bit better.
Corentin Charycb5b5c92011-11-26 11:00:05 +010020
21What: /sys/devices/platform/samsung/battery_life_extender
22Date: December 1, 2011
23KernelVersion: 3.3
24Contact: Corentin Chary <corentin.chary@gmail.com>
25Description: Max battery charge level can be modified, battery cycle
26 life can be extended by reducing the max battery charge
27 level.
28 0 means normal battery mode (100% charge)
29 1 means battery life extender mode (80% charge)
Corentin Chary3a75d372011-11-26 11:00:06 +010030
31What: /sys/devices/platform/samsung/usb_charge
32Date: December 1, 2011
33KernelVersion: 3.3
34Contact: Corentin Chary <corentin.chary@gmail.com>
35Description: Use your USB ports to charge devices, even
36 when your laptop is powered off.
37 1 means enabled, 0 means disabled.