From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: Unsupported Valley View 'LPE' adapter?
Date: Sun, 05 Jan 2014 11:55:43 +0100
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To: Adam Williamson <awilliam@redhat.com>
Cc: Vinod Koul <vinod.koul@intel.com>, alsa-devel@alsa-project.org, Jarkko Nikula <jarkko.nikula@linux.jf.intel.com>, Clemens Ladisch <clemens@ladisch.de>, lgirdwood@gmail.com
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At Sun, 29 Dec 2013 18:23:12 -0800,
Adam Williamson wrote:
> 
> On Sun, 2013-12-29 at 18:19 -0800, Adam Williamson wrote:
> > On Mon, 2013-12-02 at 17:56 -0800, Adam Williamson wrote:
> > 
> > > > > > Only Intel knows.
> > > 
> > > > I think Liam or Jarkko might have something for you...
> > > 
> > > Hope so! Thanks for the reply and the redirect.
> > > 
> > > > > > > Is there any info I can provide to help?
> > > > > > 
> > > > > > "lspci -vv -d 8086:0f28"?
> > > > > 
> > > > > OK, will get that for you shortly. Thanks for the info.
> > > 
> > > I'm just about to build a new test image which I'm throwing a couple of
> > > kernel patches for other bugs into, I'll grab this lspci output while
> > > I'm testing that.
> > 
> > So I got time today to poke at this device again, and here's something:
> > it's not actually a PCI device at all, I missed that. Neither lspci
> > (Linux) nor pcitree (Windows) shows a PCI device with ID 8086:0f28. It
> > must be connected some other way, SDIO or something. So, I don't know
> > how to get more info on it, really.
> > 
> > I'll file a bug on this device with all the details I have attached, for
> > now, I guess.
> 
> ...or, since the bug tracker is apparently down, I guess I can't. What's
> the next step? Just wait and see if I hear from someone with an
> @intel.com ? :/
> 
> I honestly wasn't expecting it to be THIS difficult to get almost
> anything working on a vlv tablet :(

Ask Intel guys at best.  It must be a device controlled by
i2c/spi/whatever, not a standard HD-audio.  IIRC, the control can be
taken from ACPI, but it's not implemented properly yet.


Takashi