BT878 audio dma

BT878 audio dma

[Udo A. Steinberg]

Hi Gerd,

When compiling kernels from Alan's -ac tree, i.e. 2.4.8-ac5, and configuring
CONFIG_SOUND_BT878=y, I completely lose the ability to play sound on my
machine over my Emu10K1 soundcard. The kernel log contains the following
message over and over again:

kernel: btaudio: stereo=1 channels=2

When compiled as a module, the module is never auto-loaded and therefore
sound works fine. The relevant info for my card is below - if more info
is required, let me know.

Regards,
Udo.

bttv: driver version 0.7.72 loaded
bttv: using 2 buffers with 2080k (4160k total) for capture
bttv: Bt8xx card found (0).
PCI: Enabling device 00:09.0 (0004 -> 0006)
PCI: Found IRQ 9 for device 00:09.0
PCI: Sharing IRQ 9 with 00:04.2
PCI: Sharing IRQ 9 with 00:04.3
PCI: Sharing IRQ 9 with 00:09.1
PCI: Sharing IRQ 9 with 00:0d.0
bttv0: Bt878 (rev 2) at 00:09.0, irq: 9, latency: 32, memory: 0xd7000000
bttv0: subsystem: 0070:13eb  =>  Hauppauge WinTV  =>  card=10
bttv0: model: BT878(Hauppauge new (bt878)) [autodetected]
bttv0: Hauppauge msp34xx: reset line init
i2c-dev.o: Registered 'bt848 #0' as minor 0
i2c-core.o: adapter bt848 #0 registered as adapter 0.
bttv0: Hauppauge eeprom: model=37284, tuner=Philips FM1216 (5), radio=yes
bttv0: i2c: checking for MSP34xx @ 0x80... found
i2c-core.o: driver i2c msp3400 driver registered.
msp34xx: init: chip=MSP3410D-B4, has NICAM support
msp3410: daemon started
bttv0: i2c attach [MSP3410D-B4]
i2c-core.o: client [MSP3410D-B4] registered to adapter [bt848 #0](pos. 0).
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
tvaudio: TV audio decoder + audio/video mux driver
tvaudio: known chips: tda9840,tda9873h,tda9850,tda9855,tea6300,tea6420,tda8425,pic16c54 (PV951)
i2c-core.o: driver generic i2c audio driver registered.
bttv0: i2c attach [tda9840]
i2c-core.o: client [tda9840] registered to adapter [bt848 #0](pos. 1).
i2c-core.o: driver i2c TV tuner driver registered.
tuner: chip found @ 0xc2
bttv0: i2c attach [Philips PAL]
i2c-core.o: client [Philips PAL] registered to adapter [bt848 #0](pos. 2).
bttv0: PLL: 28636363 => 35468950 ... ok

Re: BT878 audio dma

[rui.p.m.sousa]

On Wed, 15 Aug 2001, Udo A. Steinberg wrote:

The bt878 must be grabing an audio device. If so, and when the bt878
module is loaded first, thememu10k1 should be using /dev/dsp1 (and
/dev/dsp2).

When you compile the bt878 as a module and _loaded it after_ the
emu10k1 module does it still work (proving my point above)?

Rui Sousa

>
> Hi Gerd,
>
> When compiling kernels from Alan's -ac tree, i.e. 2.4.8-ac5, and configuring
> CONFIG_SOUND_BT878=y, I completely lose the ability to play sound on my
> machine over my Emu10K1 soundcard. The kernel log contains the following
> message over and over again:
>
> kernel: btaudio: stereo=1 channels=2
>
> When compiled as a module, the module is never auto-loaded and therefore
> sound works fine. The relevant info for my card is below - if more info
> is required, let me know.
>
> Regards,
> Udo.
>
> bttv: driver version 0.7.72 loaded
> bttv: using 2 buffers with 2080k (4160k total) for capture
> bttv: Bt8xx card found (0).
> PCI: Enabling device 00:09.0 (0004 -> 0006)
> PCI: Found IRQ 9 for device 00:09.0
> PCI: Sharing IRQ 9 with 00:04.2
> PCI: Sharing IRQ 9 with 00:04.3
> PCI: Sharing IRQ 9 with 00:09.1
> PCI: Sharing IRQ 9 with 00:0d.0
> bttv0: Bt878 (rev 2) at 00:09.0, irq: 9, latency: 32, memory: 0xd7000000
> bttv0: subsystem: 0070:13eb  =>  Hauppauge WinTV  =>  card=10
> bttv0: model: BT878(Hauppauge new (bt878)) [autodetected]
> bttv0: Hauppauge msp34xx: reset line init
> i2c-dev.o: Registered 'bt848 #0' as minor 0
> i2c-core.o: adapter bt848 #0 registered as adapter 0.
> bttv0: Hauppauge eeprom: model=37284, tuner=Philips FM1216 (5), radio=yes
> bttv0: i2c: checking for MSP34xx @ 0x80... found
> i2c-core.o: driver i2c msp3400 driver registered.
> msp34xx: init: chip=MSP3410D-B4, has NICAM support
> msp3410: daemon started
> bttv0: i2c attach [MSP3410D-B4]
> i2c-core.o: client [MSP3410D-B4] registered to adapter [bt848 #0](pos. 0).
> bttv0: i2c: checking for TDA9875 @ 0xb0... not found
> bttv0: i2c: checking for TDA7432 @ 0x8a... not found
> tvaudio: TV audio decoder + audio/video mux driver
> tvaudio: known chips: tda9840,tda9873h,tda9850,tda9855,tea6300,tea6420,tda8425,pic16c54 (PV951)
> i2c-core.o: driver generic i2c audio driver registered.
> bttv0: i2c attach [tda9840]
> i2c-core.o: client [tda9840] registered to adapter [bt848 #0](pos. 1).
> i2c-core.o: driver i2c TV tuner driver registered.
> tuner: chip found @ 0xc2
> bttv0: i2c attach [Philips PAL]
> i2c-core.o: client [Philips PAL] registered to adapter [bt848 #0](pos. 2).
> bttv0: PLL: 28636363 => 35468950 ... ok
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Re: BT878 audio dma

[Gerd Knorr]

On Wed, Aug 15, 2001 at 01:41:03PM +0200, Udo A. Steinberg wrote:
> 
> Hi Gerd,
> 
> When compiling kernels from Alan's -ac tree, i.e. 2.4.8-ac5, and configuring
> CONFIG_SOUND_BT878=y, I completely lose the ability to play sound on my
> machine over my Emu10K1 soundcard.

No.  You are using the wrong device.  btaudio is a (recording only)
sound device, and it probably got /dev/dsp.  Try using /dev/dsp1, your
emu10k1 soundcard should listen there.

  Gerd

-- 
Damn lot people confuse usability and eye-candy.

Re: BT878 audio dma

[Udo A. Steinberg]

rui.p.m.sousa@clix.pt wrote:
> 
> On Wed, 15 Aug 2001, Udo A. Steinberg wrote:
> 
> The bt878 must be grabing an audio device. If so, and when the bt878
> module is loaded first, thememu10k1 should be using /dev/dsp1 (and
> /dev/dsp2).
> 
> When you compile the bt878 as a module and _loaded it after_ the
> emu10k1 module does it still work (proving my point above)?

Yes, then it still works. Is there an easy way to tell which driver
uses which dsp device?

Regards,
Udo.