linux-kernel - Re: [PATCH] drm/i915: Revive combination mode for backlight control

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Date:	Thu, 10 Mar 2011 17:28:25 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Indan Zupancic <indan@....nu>
Cc:	Takashi Iwai <tiwai@...e.de>, Alex Riesen <raa.lkml@...il.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	DRI mailing list <dri-devel@...ts.freedesktop.org>,
	Chris Wilson <chris@...is-wilson.co.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Tino Keitel <tino.keitel@...ei.de>, stable@...nel.org,
	Keith Packard <keithp@...thp.com>
Subject: Re: [PATCH] drm/i915: Revive combination mode for backlight control

On Thu, Mar 10, 2011 at 5:23 PM, Indan Zupancic <indan@....nu> wrote:
>
> After this patch, combined with my new patch
>
> "drm/i915: Fix DPMS and suspend interaction for intel_panel.c"
>
> all known backlight problems should be fixed.

Btw, can you repost that one as a new email (and cc keithp too)? I
think it got hidden in the other thread by different subject line.

Jesse, did you take a look at that one? It was in the thread with a
subject like "[PATCH] fix backlight brightness on intel LVDS panel
after reopening lid".

Search for

  When suspending intel_panel_disable_backlight() is never called,
  but intel_panel_enable_backlight() is called at resume. With the
  effect that if the brightness was ever changed after screen
  blanking, the wrong brightness gets restored at resume time.

in your mailbox.

                    Linus
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