linux_dsm_epyc7002/Documentation/ABI/testing/sysfs-platform-intel-wmi-thunderbolt

What:		/sys/devices/platform/<platform>/force_power
Date:		September 2017
KernelVersion:	4.15
Contact:	"Mario Limonciello" <mario.limonciello@dell.com>
Description:
		Modify the platform force power state, influencing
		Thunderbolt controllers to turn on or off when no
		devices are connected (write-only)
		There are two available states:
		    * 0 -> Force power disabled
		    * 1 -> Force power enabled
platform/x86: Add driver to force WMI Thunderbolt controller power status Current implementations of Intel Thunderbolt controllers will go into a low power mode when not in use. Many machines containing these controllers also have a GPIO wired up that can force the controller awake. This is offered via a ACPI-WMI interface intended to be manipulated by a userspace utility. This mechanism is provided by Intel to OEMs to include in BIOS. It uses an industry wide GUID that is populated in a separate _WDG entry with no binary MOF. This interface allows software such as fwupd to wake up thunderbolt controllers to query the firmware version or flash new firmware. Signed-off-by: Mario Limonciello <mario.limonciello@dell.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org> [andy fixed merge conflicts and bump kernel version for ABI] Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> 2017-09-08 22:23:11 +07:00			`What: /sys/devices/platform/<platform>/force_power`
			`Date: September 2017`
			`KernelVersion: 4.15`
			`Contact: "Mario Limonciello" <mario.limonciello@dell.com>`
			`Description:`
			`Modify the platform force power state, influencing`
			`Thunderbolt controllers to turn on or off when no`
			`devices are connected (write-only)`
			`There are two available states:`
			`* 0 -> Force power disabled`
			`* 1 -> Force power enabled`