On Wed, 2017-09-06 at 15:27 -0700, Darren Hart wrote: > On Wed, Sep 06, 2017 at 09:40:02PM +0000, Mario.Limonciello@xxxxxxxx > wrote: > > > > > > > > -----Original Message----- > > > From: Bernat, Yehezkel [mailto:yehezkel.bernat@xxxxxxxxx] > > > Sent: Wednesday, September 6, 2017 3:27 PM > > > To: dvhart@xxxxxxxxxxxxx; Limonciello, Mario <Mario_Limonciello@D > > > ell.com> > > > Cc: mika.westerberg@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > > ; platform- > > > driver-x86@xxxxxxxxxxxxxxx; hughsient@xxxxxxxxx > > > Subject: Re: Fwd: [PATCH] Add driver to force WMI Thunderbolt > > > controller power > > > status > > > > > > On Wed, 2017-09-06 at 13:09 -0700, Darren Hart wrote: > > > > > > > > The other question I had about this was if the typical use case > > > > involves the OS, > > > > or if the firmware update (for example) would be performed as > > > > part of > > > > the > > > > general platform firmware update (from the UEFI update > > > > utility). > > > First, there is the use-case of add-in card, where it's > > > impossible to > > > use UEFI-based update, as much as I understand, as the BIOS isn't > > > expected to expose an ESRT entry for it. > > > > > > Even for built-in controller, my impression is that most OEMs use > > > a FW > > > update application (running on Windows) and are not publishing a > > > UEFI- > > > based solution. > > Yeah I'd agree with that impression. > > > > Even if an OEM does choose to publish a UEFI based solution, it's > > still > > useful to present FW information for the TBT controller in fwupd > > however too. > > > > Similar to how fwupd displays the information for the ME even > > though > > the ME is typically updated via UEFI. > So this raises the question: can we come up with a mechanism as part > of the tb > driver that will work on both on-board controllers and add on cards? > In it's > current form, this driver will only address on-board controllers. Both this wmi driver and Thunderbolt driver are relevant for both on- board controllers and add-in cards. Maybe I'm missing something. Would you mind to elaborate? > > The TB driver could use the WMI method if it exists, or some other > method to > power it up, but present the same sysfs interface to userspace... >
