projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d70b73a GKH |
1 | What: /sys/devices/platform/samsung/performance_level |
| 2 | Date: January 1, 2010 | |
| 3 | KernelVersion: 2.6.33 | |
| bc5bca53 | 4 | Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| 2d70b73a GKH |
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. | |
| cb5b5c91 CC |
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) | |
| 3a75d378 CC |
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. | |
| b0dcaf4f JK |
38 | |
| 39 | What: /sys/devices/platform/samsung/lid_handling | |
| 40 | Date: December 11, 2014 | |
| 41 | KernelVersion: 3.19 | |
| 42 | Contact: Julijonas Kikutis <julijonas.kikutis@gmail.com> | |
| 43 | Description: Some Samsung laptops handle lid closing quicker and | |
| 44 | only handle lid opening with this mode enabled. | |
| 45 | 1 means enabled, 0 means disabled. |