lkml.org 
[lkml]   [2017]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v3] Add driver to force WMI Thunderbolt controller power status
(Now in plain text. Sorry about that.)

On Sat, Sep 9, 2017 at 10:09 AM, Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
> On Fri, Sep 08, 2017 at 10:23:11AM -0500, Mario Limonciello wrote:
>> 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>

FWIW,

Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com>

\
 
 \ /
  Last update: 2017-09-09 20:40    [W:0.066 / U:4.336 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site