[alsa-devel] [PATCH v3 0/5] ALSA: hda - hdmi: ATI/AMD multi-channel and HBR support

[Anssi Hannula]

29.10.2013 00:00, Andre Heider kirjoitti:
> On Mon, Oct 28, 2013 at 10:35:56PM +0200, Anssi Hannula wrote:
>> 28.10.2013 20:35, Andre Heider kirjoitti:
>>> On Mon, Oct 28, 2013 at 08:25:22PM +0200, Anssi Hannula wrote:
>>>> 28.10.2013 20:17, Andre Heider kirjoitti:
>>>>> On Mon, Oct 28, 2013 at 08:12:43PM +0200, Anssi Hannula wrote:
>>>>>> 28.10.2013 19:52, Andre Heider kirjoitti:
>>>>>>> On Fri, Oct 25, 2013 at 08:23:48PM +0300, Anssi Hannula wrote:
>>>>>>>> 25.10.2013 19:54, Andre Heider kirjoitti:
>>>>>>>>> cat /proc/asound/card0/eld\#0.0
>>>>>>>>> 	monitor_present		1
>>>>>>>>> 	eld_valid		0
>>>>>>>>
>>>>>>>> However, this should have eld_valid=1 and contain more info. To get a
>>>>>>>> hint on whether it is a bug in audio or video driver, could you give a
>>>>>>>> log with CONFIG_SND_DEBUG ?
>>>>>>>>
>>>>>>>> AFAICS the sound git master tree should have the necessary support in
>>>>>>>> the radeon video driver to allow the audio driver to generate a valid
>>>>>>>> ELD with your card.
>>>>>>>
>>>>>>> With CONFIG_SND_DEBUG=y I get a bunch of
>>>>>>> "HDMI ATI/AMD: no speaker allocation for ELD"
>>>>>>> but afaics that's about it.
>>>>>>
>>>>>> Thanks, that is exactly what I was looking for.
>>>>>>
>>>>>> Looks like a radeon driver issue - it does not seem to setup the speaker
>>>>>> allocation registers properly (so that ALSA could read them from there),
>>>>>> and I verified that the EDID you posted has a valid speaker allocation
>>>>>> byte 0x4f.
>>>>>>
>>>>>> Just to recheck - you are running sound git master, or something else?
>>>>>
>>>>> This is from 3.12-rc7 with today's sound/master (3fbdaf9b) merged on top.
>>>>>
>>>>
>>>> Ah, OK, that certainly explains it. 3.12-x has this one:
>>>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/gpu/drm/radeon?id=555b1b651acf44bf27ebbb04235d38a8fd2d58dc
>>>>
>>>> Could you revert that for testing, just to see if you get proper ELD
>>>> info then?
>>>
>>> Blergh, guess that's my fault for not just using sound/master.
>>>
>>> But that looks better:
>>>
>>> cat /proc/asound/card0/eld\#0.0
>>> 	monitor_present		1
>>> 	eld_valid		1
>>> 	monitor_name		
>>> 	connection_type		HDMI
>>> 	eld_version		[0x2] CEA-861D or below
>>> 	edid_version		[0x0] no CEA EDID Timing Extension block present
>>> 	manufacture_id		0x0
>>> 	product_id		0x0
>>> 	port_id			0x0
>>> 	support_hdcp		0
>>> 	support_ai		0
>>> 	audio_sync_delay	0
>>> 	speakers		[0x4f] FL/FR LFE FC RL/RR RLC/RRC
>>> 	sad_count		4
>>> 	sad0_coding_type	[0x1] LPCM
>>> 	sad0_channels		2
>>> 	sad0_rates		[0x1ee0] 32000 44100 48000 88200 96000 176400 192000
>>> 	sad0_bits		[0xe0000] 16 20 24
>>
>> Thanks.
>>
>> Hmm, seems we have bug in the radeon driver, we are missing the
>> 8-channel PCM SAD here.
>>
>> Can you try the attached patch?
> 
> Sure, with that patch I get:
> 
> 	monitor_present		1
> 	eld_valid		1
> 	monitor_name		
> 	connection_type		HDMI
> 	eld_version		[0x2] CEA-861D or below
> 	edid_version		[0x0] no CEA EDID Timing Extension block present
> 	manufacture_id		0x0
> 	product_id		0x0
> 	port_id			0x0
> 	support_hdcp		0
> 	support_ai		0
> 	audio_sync_delay	0
> 	speakers		[0x4f] FL/FR LFE FC RL/RR RLC/RRC
> 	sad_count		5
> 	sad0_coding_type	[0x1] LPCM
> 	sad0_channels		8
> 	sad0_rates		[0x6e0] 32000 44100 48000 88200 96000
> 	sad0_bits		[0xe0000] 16 20 24
> 	sad1_coding_type	[0x1] LPCM
> 	sad1_channels		2
> 	sad1_rates		[0x1ee0] 32000 44100 48000 88200 96000 176400 192000
> 	sad1_bits		[0xe0000] 16 20 24
> 	sad2_coding_type	[0x2] AC-3
> 	sad2_channels		8
> 	sad2_rates		[0xe0] 32000 44100 48000
> 	sad2_max_bitrate	640000
> 	sad3_coding_type	[0x6] AAC-LC
> 	sad3_channels		8
> 	sad3_rates		[0xe0] 32000 44100 48000
> 	sad3_max_bitrate	640000
> 	sad4_coding_type	[0x7] DTS
> 	sad4_channels		8
> 	sad4_rates		[0xe0] 32000 44100 48000
> 	sad4_max_bitrate	1536000

OK, looks good, I'll submit the patch to radeon people then.

> Those are supposed to be hardware capabilities, right? Because I'm
> pretty sure this dated receiver doesn't support AAC bitstreams.

Yep. I did manually verify that your EDID really claims AAC support,
though. It could be wrong I guess, and the reported max_bitrate is
suspiciously the same as for AC-3.

If you want to try AAC bitstreaming, you can download this:
http://onse.fi/files/testi.aac.lc.unconfirmed.spdif
and play it back using:
aplay -Dhdmi:CARD=Generic,DEV=0,AES0=6 -r44100 -f s16_le -c2 \
	testi.aac.lc.unconfirmed.spdif

(file unconfirmed as I don't have AAC HW)

-- 
Anssi Hannula