| What: /sys/firmware/acpi/platform_profile_choices |
| Date: October 2020 |
| Contact: Hans de Goede <hdegoede@redhat.com> |
| Description: This file contains a space-separated list of profiles supported for this device. |
| |
| Drivers must use the following standard profile-names: |
| |
| ==================== ======================================== |
| low-power Low power consumption |
| cool Cooler operation |
| quiet Quieter operation |
| balanced Balance between low power consumption |
| and performance |
| balanced-performance Balance between performance and low |
| power consumption with a slight bias |
| towards performance |
| performance High performance operation |
| ==================== ======================================== |
| |
| Userspace may expect drivers to offer more than one of these |
| standard profile names. |
| |
| What: /sys/firmware/acpi/platform_profile |
| Date: October 2020 |
| Contact: Hans de Goede <hdegoede@redhat.com> |
| Description: Reading this file gives the current selected profile for this |
| device. Writing this file with one of the strings from |
| platform_profile_choices changes the profile to the new value. |
| |
| This file can be monitored for changes by polling for POLLPRI, |
| POLLPRI will be signalled on any changes, independent of those |
| changes coming from a userspace write; or coming from another |
| source such as e.g. a hotkey triggered profile change handled |
| either directly by the embedded-controller or fully handled |
| inside the kernel. |
