| Greg Kroah-Hartman | 2d70b73 | 2011-03-11 12:41:19 -0500 | [diff] [blame] | 1 | What: /sys/devices/platform/samsung/performance_level |
| 2 | Date: January 1, 2010 |
| 3 | KernelVersion: 2.6.33 |
| 4 | Contact: Greg Kroah-Hartman <gregkh@suse.de> |
| 5 | Description: 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 Chary | cb5b5c9 | 2011-11-26 11:00:05 +0100 | [diff] [blame] | 20 | |
| 21 | What: /sys/devices/platform/samsung/battery_life_extender |
| 22 | Date: December 1, 2011 |
| 23 | KernelVersion: 3.3 |
| 24 | Contact: Corentin Chary <corentin.chary@gmail.com> |
| 25 | Description: 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 Chary | 3a75d37 | 2011-11-26 11:00:06 +0100 | [diff] [blame^] | 30 | |
| 31 | What: /sys/devices/platform/samsung/usb_charge |
| 32 | Date: December 1, 2011 |
| 33 | KernelVersion: 3.3 |
| 34 | Contact: Corentin Chary <corentin.chary@gmail.com> |
| 35 | Description: Use your USB ports to charge devices, even |
| 36 | when your laptop is powered off. |
| 37 | 1 means enabled, 0 means disabled. |