linux-kernel - Re: Thinkpad hda regression in 3.3

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Message-ID: <20120413133721.GE25425@zod.bos.redhat.com>
Date:	Fri, 13 Apr 2012 09:37:21 -0400
From:	Josh Boyer <jwboyer@...hat.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org, kernel-team@...oraproject.org
Subject: Re: Thinkpad hda regression in 3.3

On Fri, Apr 13, 2012 at 03:29:41PM +0200, Takashi Iwai wrote:
> At Fri, 13 Apr 2012 09:23:52 -0400,
> Josh Boyer wrote:
> > > The problem regarding the docking station is basically a BIOS issue.
> > > ThinkPad BIOS doesn't expose the pins for docking stations at all.
> > > We have already a workaround for X200, and similar others would be
> > > needed for T410, T420, etc.
> > > 
> > > For testing, you don't need even patch the driver.  When the driver is
> > > built with CONFIG_SND_HDA_PATCH_LOADER=y, create a file containing the
> > > below as /lib/firmware/alsa-tp-dock:
> > > 
> > > ================================================================
> > > [codec]
> > > 0x14f15069 0x17aa21a4 0
> > > 
> > > [pincfg]
> > > 0x1a 0x21a11000
> > > 0x1c 0x23014250
> > > ================================================================
> > 
> > The above is for the X200 docking station, correct?  So it should work
> > with an x201 thinkpad in an x200 dock.
> 
> It's for T410/T510 dock.  But X201 uses the same codec chip, so this
> could be used, too.  Just give it a try.

OK.  I've asked a reporter to test this out.  We'll get back to you.

josh
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