[alsa-devel] HDMI on HDA device=3

[Mohammad Bahathir Hashim]

On 2010-11-09, Jaroslav Kysela <perex at perex.cz> wrote:
> On Tue, 9 Nov 2010, Mohammad Bahathir Hashim wrote:
>
>> On 2010-11-09, Jaroslav Kysela <perex at perex.cz> wrote:
>>> On Tue, 9 Nov 2010, Mohammad Bahathir Hashim wrote:
>>>
>>>> On 2010-11-09, David Henningsson <david.henningsson at canonical.com> wrote:
>>>>> I have seen a few HDMIs which share the HDA controller with the onboard
>>>>> sound card, but the codecs are different, e g the onboard one is at
>>>>> address #0 and the HDMI is at address #3 - or even #3, #7, #8 and #9 in
>>>>> some cases.
>>>>>
>>>>> Now, if the user specifies the device string hdmi:x (where x is card
>>>>> name/number), I'd like it to kind of autodetect this and use DEV=3
>>>>> instead of DEV=0, and without breaking the cards where the hdmi is a
>>>>> separate card with a codec at address #0. However, it still seems like
>>>>> the device is at DEV=3 somehow.
>>>>>
>>>>> Now, looking at /usr/share/alsa/cards/HDA-Intel.conf, I notice that
>>>>> there are entries HDA-Intel.pcm.hdmi.0 which sets DEV=3, so it seems
>>>>> like someone already thought of this. However, just using "hdmi:x" does
>>>>> not trigger "DEV=3". I'm still not grepping all of the alsa lisp
>>>>> architecture stuff, so could someone explain to me how the
>>>>> HDA-Intel.pcm.hdmi.0 entry relates to the "hdmi:x" alsa device string?
>>>>>
>>>>
>>>> I am not sure about Intel HDMI, but, in my case with MacbookPro 6,2
>>>> (15" Mid 2010); the HDMI audio stream via NVIDIA HDMI can only be
>>>> started if I use hw:1,7 (or Mplayer's -ao alsa:device=hw=1.7). No
>>>
>>> This should be equal to '-ao alsa:device=hdmi=1.1' (hdmi:1,1 in ALSA
>>> naming).
>>>
>>>  						Jaroslav
>>>
>>> -----
>>> Jaroslav Kysela <perex at perex.cz>
>>> Linux Kernel Sound Maintainer
>>> ALSA Project, Red Hat, Inc.
>>
>>
>> Ok, I tried the -ao alsa:device=hdmi=1.7 ... but, MPlayer complains;
>
> No, 1.7 but 1.1 (hw device 7 is logical device 1 - aka second device - for 
> hdmi).
>
>  						Jaroslav
>
> -----
> Jaroslav Kysela <perex at perex.cz>
> Linux Kernel Sound Maintainer
> ALSA Project, Red Hat, Inc.

Yup, I tried both -ao alsa:device=hdmi=1.1 and -ao alsa:device=1.7,
but, I got same or similar errors.

Thanks :)