[Intel-gfx] [PATCH] detect hdmi monitor by reading edid

[Ma, Ling]

>-----Original Message-----
>From: Keith Packard [mailto:keithp at keithp.com]
>Sent: 2009年7月2日 11:13
>To: Eric Anholt
>Cc: keithp at keithp.com; Ma, Ling; intel-gfx at lists.freedesktop.org
>Subject: Re: [Intel-gfx] [PATCH] detect hdmi monitor by reading edid
>
>On Wed, 2009-07-01 at 18:24 -0700, Eric Anholt wrote:
>
>> So, if we're not doing hotplug interrupt based detection any more,
>> doesn't that mean that the PEG_BAND_GAP_DATA workaround doesn't need to
>> stay any more?
>
>Seems like we don't. I'd like to see us create a general 'detect via
>EDID' mechanism in DRM though, which pulls just a few bytes over DDC
>instead of reading the whole block. That would be a whole lot faster.
Yes, I understand, we only read the whole block in advance.  Because if the status is detected, we have to identify whether it is real HDMI monitor by HDMI identifier in CEA-extension block.
Thanks
Ma Ling

>
>--
>keith.packard at intel.com