IgepV2 Sound mit Alsa (von GSM-Modem)

[David D. (chop-suey)]

Hallo Leute,

ich habe hier ein IgepV2 mit Expansion Board. Auf diesem ist ein 
Omap3530 Prozessor und ein dazugehöriger Soundchip: TPS65950.

Auf dem Expansion Board ist ein GSM-Modem verbaut. Dieses kann ich 
soweit via AT Befehle steuern. Allerdings versuche ich ein 
Telefongespräch zu führen und es kommt kein Ton.

Im grunde ist der Aufbau auf Hardware-Ebene für den Sound der folgende:

GSM-Modem(Telit GE865) ===McBSP1 (I2S)====> OMAP3530 
====McBSP2(I2S)====>TPS65950(Soundchip)====>Klinke

Auf dem Board ist Linux mit installiertem Alsa.

Ich gehe nun davon aus das der Sound an der Schnittstelle zwischen OMAP 
und Soundchip also am I2S ankommt. Allerdings weiß ich nicht was ich 
machen muss um den Sound von dort an die Klinke "weiterzuleiten".

Ich weiß das ist eine recht schwammige Erklärung allerdings hoffe ich 
das jemand schlau daraus wird^^

Beste Grüße

David

PS. Das Kommando amixer liefert folgendes zurück(ich hoffe das hilft 
etwas):

Simple mixer control 'AVADC Clock Priority',0
  Capabilities: enum
  Items: 'Voice high priority' 'HiFi high priority'
  Item0: 'Voice high priority'
Simple mixer control 'Analog',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 5
  Front Left: Capture 0 [0%] [0.00dB]
  Front Right: Capture 0 [0%] [0.00dB]
Simple mixer control 'Analog Left AUXL',0
  Capabilities: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Analog Left Carkit Mic',0
  Capabilities: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Analog Left Headset Mic',0
  Capabilities: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Analog Left Main Mic',0
  Capabilities: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Analog Right AUXR',0
  Capabilities: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Analog Right Sub Mic',0
  Capabilities: cswitch cswitch-joined penum
  Capture channels: Mono
  Mono: Capture [off]
Simple mixer control 'Carkit',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 3
  Mono:
  Front Left: Playback 0 [0%] [-99999.99dB]
  Front Right: Playback 0 [0%] [-99999.99dB]
Simple mixer control 'CarkitL Mixer AudioL1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'CarkitL Mixer AudioL2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'CarkitL Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'CarkitR Mixer AudioR1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'CarkitR Mixer AudioR2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'CarkitR Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Codec Operation Mode',0
  Capabilities: enum
  Items: 'Option 2 (voice/audio)' 'Option 1 (audio)'
  Item0: 'Option 2 (voice/audio)'
Simple mixer control 'DAC Voice Analog Downlink',0
  Capabilities: volume volume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 18
  Mono: 12 [67%] [0.00dB] Playback [on]
Simple mixer control 'DAC Voice Digital Downlink',0
  Capabilities: volume volume-joined penum
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 49
  Mono: 37 [76%] [0.00dB]
Simple mixer control 'DAC1 Analog',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 18
  Mono:
  Front Left: Playback 0 [0%] [-24.00dB] [on]
  Front Right: Playback 0 [0%] [-24.00dB] [on]
Simple mixer control 'DAC1 Digital Coarse',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 2
  Mono:
  Front Left: Playback 0 [0%] [0.00dB]
  Front Right: Playback 0 [0%] [0.00dB]
Simple mixer control 'DAC1 Digital Fine',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Mono:
  Front Left: Playback 63 [100%] [0.00dB]
  Front Right: Playback 63 [100%] [0.00dB]
Simple mixer control 'DAC2 Analog',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 18
  Mono:
  Front Left: Playback 12 [67%] [0.00dB] [on]
  Front Right: Playback 12 [67%] [0.00dB] [on]
Simple mixer control 'DAC2 Digital Coarse',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 2
  Mono:
  Front Left: Playback 0 [0%] [0.00dB]
  Front Right: Playback 0 [0%] [0.00dB]
Simple mixer control 'DAC2 Digital Fine',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 63
  Mono:
  Front Left: Playback 63 [100%] [0.00dB]
  Front Right: Playback 63 [100%] [0.00dB]
Simple mixer control 'Digimic LR Swap',0
  Capabilities: enum
  Items: 'Not swapped' 'Swapped'
  Item0: 'Not swapped'
Simple mixer control 'Earpiece',0
  Capabilities: pvolume pvolume-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 3
  Mono: Playback 0 [0%] [-99999.99dB]
Simple mixer control 'Earpiece Mixer AudioL1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Earpiece Mixer AudioL2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Earpiece Mixer AudioR1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Earpiece Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'HS ramp delay',0
  Capabilities: enum
  Items: '27/20/14 ms' '55/40/27 ms' '109/81/55 ms' '218/161/109 ms' '437/323/218 ms' '874/645/437 ms' '1748/1291/874 ms' '3495/2581/1748 ms'
  Item0: '55/40/27 ms'
Simple mixer control 'HandsfreeL',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'HandsfreeL Mux',0
  Capabilities: enum
  Items: 'Voice' 'AudioL1' 'AudioL2' 'AudioR2'
  Item0: 'Voice'
Simple mixer control 'HandsfreeR',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'HandsfreeR Mux',0
  Capabilities: enum
  Items: 'Voice' 'AudioR1' 'AudioR2' 'AudioL2'
  Item0: 'Voice'
Simple mixer control 'Headset',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 3
  Mono:
  Front Left: Playback 1 [33%] [-6.00dB]
  Front Right: Playback 1 [33%] [-6.00dB]
Simple mixer control 'HeadsetL Mixer AudioL1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'HeadsetL Mixer AudioL2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'HeadsetL Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'HeadsetR Mixer AudioR1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'HeadsetR Mixer AudioR2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'HeadsetR Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Left Digital Loopback',0
  Capabilities: volume volume-joined penum
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 7
  Mono: 0 [0%] [-99999.99dB]
Simple mixer control 'Left1 Analog Loopback',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Left2 Analog Loopback',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PreDriv',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 3
  Mono:
  Front Left: Playback 0 [0%] [-99999.99dB]
  Front Right: Playback 0 [0%] [-99999.99dB]
Simple mixer control 'PredriveL Mixer AudioL1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveL Mixer AudioL2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveL Mixer AudioR2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveL Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveR Mixer AudioL2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveR Mixer AudioR1',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveR Mixer AudioR2',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'PredriveR Mixer Voice',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Right Digital Loopback',0
  Capabilities: volume volume-joined penum
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 7
  Mono: 0 [0%] [-99999.99dB]
Simple mixer control 'Right1 Analog Loopback',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Right2 Analog Loopback',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'TX1',0
  Capabilities: cenum
  Items: 'Analog' 'Digimic0'
  Item0: 'Analog'
Simple mixer control 'TX1 Digital',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 15 [48%] [15.00dB]
  Front Right: Capture 15 [48%] [15.00dB]
Simple mixer control 'TX2',0
  Capabilities: cenum
  Items: 'Analog' 'Digimic1'
  Item0: 'Analog'
Simple mixer control 'TX2 Digital',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 15 [48%] [15.00dB]
  Front Right: Capture 15 [48%] [15.00dB]
Simple mixer control 'Vibra',0
  Capabilities: enum
  Items: 'Local vibrator' 'Audio'
  Item0: 'Local vibrator'
Simple mixer control 'Vibra H-bridge direction',0
  Capabilities: enum
  Items: 'Positive polarity' 'Negative polarity'
  Item0: 'Positive polarity'
Simple mixer control 'Vibra H-bridge mode',0
  Capabilities: enum
  Items: 'Vibra H-bridge direction' 'Audio data MSB'
  Item0: 'Vibra H-bridge direction'
Simple mixer control 'Vibra Mux',0
  Capabilities: enum
  Items: 'AudioL1' 'AudioR1' 'AudioL2' 'AudioR2'
  Item0: 'AudioL1'
Simple mixer control 'Voice Analog Loopback',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Voice Digital Loopback',0
  Capabilities: volume volume-joined penum
  Playback channels: Mono
  Capture channels: Mono
  Limits: 0 - 41
  Mono: 0 [0%] [-99999.99dB]

[Εrnst B. (ernst)]

Ich glaube (kanns leider grad nicht ausprobieren), die Klinkenbuchse ist 
an einem der Headset-Ausgänge des TWL-Soundchips...

Zum Vergleich häng ich dir mal die Ausgabe von "amixer" bei mir an, kann 
aber leider nicht sagen, ob diese im Moment Sound ausgeben würde oder 
nicht.

[David D. (chop-suey)]

Also sound via "aplay xy.wav" klappt. Mir ist das Prinzip nicht so ganz 
klar.

Ich habe auf dem Soundchip dreimal "Input":

PCM VSP (Voice ?)
PCM BlueTooth

und

TDM(I2S) (welcher via McBSP 2 zum Omap führt)

Außerdem habe ich einmal als "Output" Earpeace und das Micro.

Wie stelle ich denn generell ein das der Sound von TDM an Earpeace 
weitergeleitet wird.

Muss ich da einfach gesagt den sound mit alsamixer "anstellen" oder muss 
ich ein Programm wie gstreamer nehmen?

David

[Εrnst B. (ernst)]

Eigentlich:
Alles was aus ALSA-Sicht ausgegeben wird (also alles was der OMAP an 
Sounddaten zu gesicht bekommt), läuft über I2S zum Soundchip.
Was dieser mit dem Datenstrom macht, kann man per alsa-mixer einstellen.
Ob der Omap seinen I2S-Datenstrom mit gstreamer oder aplay oder sonstwas 
erzeugt, sollte keinen Unterschied machen.

Aber: Ich hab mich mit dem Sound auf dem IGEPv2-Board nicht sonderlich 
beschäftigt, ein GSM-Modul hab ich auch nicht dran.

Hat das GSM-Modem evtl. noch einen direkten Sound-Link zum TPS/TWL, am 
OMAP vorbei?

[David D. (chop-suey)]

Hi, erstmal danke für deine so schnellen Antworten :).

Das Modem hat auch noch eine Analoge Audio-Schnittstelle allerdings 
müsste ich eine Verbindung erst löten und da scheint mir die 
Digitale-Schnittstelle eleganter. Es scheint ja auch so gedacht zu sein 
das man die Sounddaten per I2S ausgeben kann^^

Die Information mit aplay ist schonmal ziemlich gut. Das heißt das ich 
via alsamixer erstmal einstellungen vornehmen muss. Dann schau ich mir 
diesbezüglich nochmal die Manuals vom Soundchip an.

Allerdings bleibt noch die frage was ich bei aplay als "File" angeben 
muss wenn die daten vom omap abspielen will. Gebe ich dann einfach das 
Device an?

mfg David