[alsa-devel] [PATCH 05/10] intelhdmi - probe for monitor/eld presence at module init time

Wu Fengguang fengguang.wu at intel.com
Wed Nov 18 10:16:12 CET 2009

On Wed, Nov 18, 2009 at 05:04:20PM +0800, Takashi Iwai wrote:
> At Wed, 18 Nov 2009 12:38:03 +0800,
> Wu Fengguang wrote:
> > 
> > This avoids lost of presence info on module reloading.
> > The presence info used to be only updated at the (rare) hotplug events.
> > 
> > Proposed by David, thanks!
> > 
> > CC: David Härdeman <david at hardeman.nu>
> > Signed-off-by: Wu Fengguang <fengguang.wu at intel.com>
> I think we should handle this also at resume.
> Typically, the codec resume callback calls the unsolicited event
> explicitly.
> But, the resume callback can be used for resuming from the
> power-saving mode, too.  Thus it should be optimized and less
> verbose, e.g. cache the ELD bytes, compare the new data with the
> cached data, and skip the procedure if it's the same content.
> Anyway, all patches have been applied, so let's fix this on the
> current tree.

OK, thanks for the tips.  Actually I have not tested suspend/resume
yet, I will do it next week. Currently I have some pending items
(that's why I have to put off the keep-power-on patch).


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