Hi All, I have an Intel HDA compatible device that supports 5.1 digital audio output over HDMI. It reports two nodes and two widgets:-
Root(0) | AFG(1) / \ / \ / \ Audio output(2) Pin Complex(3)
This setup produces a “Digital Stereo (HDMI) Output” device at user level in the operating system.
The codec reports its self to the operating system as follows (from /proc/asound/card0/codec#1) -------------------------------------------------------------------- AFG Function Id: 0x1 (unsol 1) No Modem Function Group found Default PCM: rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Default Amp-In caps: N/A Default Amp-Out caps: N/A GPIO: io=0, o=0, i=0, unsolicited=0, wake=0 -------------------------------------------------------------------- Node 0x02 [Audio Output] wcaps 0x201: Stereo Digital Device: name="S3 HDMI 1", type="Audio", device=0 Converter: stream=0, channel=0 Digital: Digital category: 0x0 -------------------------------------------------------------------- Node 0x03 [Pin Complex] wcaps 0x400381: Stereo Digital Pincap 0x00000090: OUT HDMI Pin Default 0x185650f0: [Jack] Digital Out at Int HDMI Conn = Digital, Color = Red DefAssociation = 0xf, Sequence = 0x0 Pin-ctls: 0x40: OUT Unsolicited: tag=00, enabled=0 Connection: 1 0x02 --------------------------------------------------------------------
the ELD from the receiving device is:-
monitor_present 1 eld_valid 1 monitor_name EP-HDMI-RX connection_type HDMI eld_version [0x2] CEA-861D or below edid_version [0x3] CEA-861-B, C or D manufacture_id 0x1017 product_id 0x901 port_id 0x0 support_hdcp 0 support_ai 1 audio_sync_delay 0 speakers [0x4f] FL/FR LFE FC RL/RR RLC/RRC
sad_count 2
sad0_coding_type [0x2] AC-3 sad0_channels 6 sad0_rates [0xe0] 32000 44100 48000 sad0_max_bitrate 640000
sad1_coding_type [0x7] DTS sad1_channels 7 sad1_rates [0xc0] 44100 48000 sad1_max_bitrate 1536000
Does anyone know what changes would be required to this setup in order for the device to be recognised as “Digital Surround 5.1 (HDMI) Output” by alsa?
TIA ---------------------------------------------------------------------- Regards Ben