| 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. | |
| This file may also emit the string 'custom' to indicate | |
| that multiple platform profiles drivers are in use but | |
| have different values. This string can not be written to | |
| this interface and is solely for informational purposes. |