From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keith Packard <keithp@keithp.com>
Subject: Re: [PATCH] drm/i915: Reset GMBUS controller after NAK
Date: Wed, 30 Mar 2011 10:56:39 -0700
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On Wed, 30 Mar 2011 18:42:44 +0100, Chris Wilson <chris@chris-wilson.co.uk>=
 wrote:
> Once a NAK has been asserted by the slave, we need to reset the GMBUS
> controller in order to continue. This is done by asserting the Software
> Clear Interrupt bit and then clearing it again to restore operations.
>=20
> If we don't clear the NAK, then all future GMBUS xfers will fail,
> including DDC probes and EDID retrieval.
>=20
> v2: Add some comments as suggested by Keith Packard.
>=20
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=3D35781
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

Reviewed-by: Keith Packard <keithp@keithp.com>

=2D-=20
keith.packard@intel.com

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