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The class interface allows changing multiple platform profiles on a system to different values. The semantics of it are similar to the legacy interface. Reviewed-by: Armin Wolf <W_Armin@gmx.de> Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20241206031918.1537-23-mario.limonciello@amd.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
40 lines
1.7 KiB
Text
40 lines
1.7 KiB
Text
What: /sys/firmware/acpi/platform_profile_choices
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Date: October 2020
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Contact: Hans de Goede <hdegoede@redhat.com>
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Description: This file contains a space-separated list of profiles supported for this device.
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Drivers must use the following standard profile-names:
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==================== ========================================
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low-power Low power consumption
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cool Cooler operation
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quiet Quieter operation
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balanced Balance between low power consumption
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and performance
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balanced-performance Balance between performance and low
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power consumption with a slight bias
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towards performance
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performance High performance operation
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==================== ========================================
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Userspace may expect drivers to offer more than one of these
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standard profile names.
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What: /sys/firmware/acpi/platform_profile
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Date: October 2020
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Contact: Hans de Goede <hdegoede@redhat.com>
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Description: Reading this file gives the current selected profile for this
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device. Writing this file with one of the strings from
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platform_profile_choices changes the profile to the new value.
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This file can be monitored for changes by polling for POLLPRI,
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POLLPRI will be signalled on any changes, independent of those
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changes coming from a userspace write; or coming from another
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source such as e.g. a hotkey triggered profile change handled
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either directly by the embedded-controller or fully handled
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inside the kernel.
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This file may also emit the string 'custom' to indicate
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that multiple platform profiles drivers are in use but
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have different values. This string can not be written to
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this interface and is solely for informational purposes.
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