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.