linux-kernel - Re: [PATCH] drm/i915: Fix invalid backpanel values for GEN3 or older chips

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Message-ID: <867h2wklln.fsf@sumi.keithp.com>
Date:	Sat, 19 Nov 2011 10:34:12 -0800
From:	Keith Packard <keithp@...thp.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Daniel Mack <zonque@...il.com>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	Jesse Barnes <jbarnes@...tuousgeek.org>, harald@...hat.com,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915: Fix invalid backpanel values for GEN3 or older chips

On Sat, 19 Nov 2011 11:05:05 +0100, Takashi Iwai <tiwai@...e.de> wrote:

> Maybe it'd be better to mention that actually setting bit-0 caused a
> blank screen on some machines.

Was that caused by *just* setting bit zero? Or was it caused by setting
the duty cycle to 0xffff, in which case it would be larger than the
maximum value?

I'll clean up the commit log message with your answer and then push this out.

-- 
keith.packard@...el.com

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