projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 2e0f8822 RW |
1 | What: /sys/devices/.../lpss_ltr/ |
| 2 | Date: March 2013 | |
| 3 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
| 4 | Description: | |
| 5 | The /sys/devices/.../lpss_ltr/ directory is only present for | |
| 6 | devices included into the Intel Lynxpoint Low Power Subsystem | |
| 7 | (LPSS). If present, it contains attributes containing the LTR | |
| 8 | mode and the values of LTR registers of the device. | |
| 9 | ||
| 10 | What: /sys/devices/.../lpss_ltr/ltr_mode | |
| 11 | Date: March 2013 | |
| 12 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
| 13 | Description: | |
| 14 | The /sys/devices/.../lpss_ltr/ltr_mode attribute contains an | |
| 15 | integer number (0 or 1) indicating whether or not the devices' | |
| 16 | LTR functionality is working in the software mode (1). | |
| 17 | ||
| 18 | This attribute is read-only. If the device's runtime PM status | |
| 19 | is not "active", attempts to read from this attribute cause | |
| 20 | -EAGAIN to be returned. | |
| 21 | ||
| 22 | What: /sys/devices/.../lpss_ltr/auto_ltr | |
| 23 | Date: March 2013 | |
| 24 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
| 25 | Description: | |
| 26 | The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the | |
| 27 | current value of the device's AUTO_LTR register (raw) | |
| 28 | represented as an 8-digit hexadecimal number. | |
| 29 | ||
| 30 | This attribute is read-only. If the device's runtime PM status | |
| 31 | is not "active", attempts to read from this attribute cause | |
| 32 | -EAGAIN to be returned. | |
| 33 | ||
| 34 | What: /sys/devices/.../lpss_ltr/sw_ltr | |
| 35 | Date: March 2013 | |
| 36 | Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
| 37 | Description: | |
| 38 | The /sys/devices/.../lpss_ltr/auto_ltr attribute contains the | |
| 39 | current value of the device's SW_LTR register (raw) represented | |
| 40 | as an 8-digit hexadecimal number. | |
| 41 | ||
| 42 | This attribute is read-only. If the device's runtime PM status | |
| 43 | is not "active", attempts to read from this attribute cause | |
| 44 | -EAGAIN to be returned. |