___________________
Fabrício Nihues
---------- Forwarded message ----------
From: Fabrício Nihues <fabricio.nihues@xxxxxxxxx>
Date: 2009/5/24
Subject: Re: USB audio adapters (CM6206 chip)
To: Dan Allongo <gongo2k1@xxxxxxxxx>
Hello, I've tried again on windows, and spdif passtrough is working
with dts/ac3 files if you send it as 16 bit output, if sending as 24
bit or 32 bit I get noise, but the passtrough is working all the 5.1
channels, the receiver recognize dts and ac3 even if the analog out is
set to 2 Ch on the driver control panel. The only thing that enable or
disables the optical out is that switch in the cmedia control panel
inside windows.
If is there something I can do please tell, I'll try to do, I can only
test tomorrow.
___________________
Fabrício Nihues
2009/5/24 Dan Allongo <gongo2k1@xxxxxxxxx>:
> Okay, well, if SPDIF out didn't work with the settings I sent out, then I
> really don't know what else to do for it since I'm only stabbing in the dark
> here.
> Besides, everything I'm reading seems to imply that the optical out is only
> 2-channel stereo anyway on most of these "budget" chips and they only do
> surround sound in analog.
>
> Surround 5.1 does indeed swap cen/lfe with rear outputs, but switching to
> surround 4.0 properly down-mixes to rear channels (and being that I only
> have a 4.0 system at home, this works for me).
> Before I submit a patch for this, I'll need someone with a CM106 TurtleBeach
> device to check that everything still works okay.
> I'm setting the registers to default for a 7.1 card using the 48-pin chip as
> per the datasheet with the only deviation of turning on the Line Out driver
> as well (which was already there in the existing "quirk" for the CM106).
> Once I get some feedback from CM106 users, I'll submit the patch.
>
>
> --- usbaudio.c 2009-05-06 03:06:04.000000000 -0400
> +++ usbaudio.c 2009-05-24 11:07:44.000000000 -0400
> @@ -3273,10 +3273,17 @@
> static int snd_usb_cm106_boot_quirk(struct usb_device *dev)
> {
> /*
> + * Set registers to defaults:
> + * Clear SPDIF-out parameters
> + * Enable DACx2, PLL binary, Soft Mute, and SPDIF-out
> * Enable line-out driver mode, set headphone source to front
> * channels, enable stereo mic.
> + * Enable all channels and select 48-pin chipset
> */
> - return snd_usb_cm106_write_int_reg(dev, 2, 0x8004);
> + return snd_usb_cm106_write_int_reg(dev, 0, 0x0000) +
> + snd_usb_cm106_write_int_reg(dev, 1, 0xb000) +
> + snd_usb_cm106_write_int_reg(dev, 2, 0x8004) +
> + snd_usb_cm106_write_int_reg(dev, 3, 0x007f);
> }
>
>
> @@ -3560,7 +3567,8 @@
> }
>
> /* C-Media CM106 / Turtle Beach Audio Advantage Roadie */
> - if (id == USB_ID(0x10f5, 0x0200)) {
> + /* C-Media CM6206 / CM106-Like Sound Device */
> + if (id == USB_ID(0x10f5, 0x0200) || id == USB_ID(0x0d8c, 0x0102)) {
> if (snd_usb_cm106_boot_quirk(dev) < 0)
> goto __err_val;
> }
>
>
>
>
> On Sat, May 23, 2009 at 10:52 AM, Paolo Saggese <pmsa4-alsa@xxxxxxxx> wrote:
>>
>> On Saturday 23 May 2009, Fabrício Nihues wrote:
>>
>> > The light of optical is on now... but don't send sound again... I'm
>> > sending to iec958:CARD=default,DEV=0 or spdif:CARD=default,DEV=0, on
>> > both I don't hear sound. And, if I change the receiver to my analog
>>
>> try plughw:0,1 as the spdif out device.
>>
>> Also experiment with settings on alsamixer.
>>
>> Ciao,
>> Paolo.
>>
>> --
>> Skype: Paolo.Saggese
>> http://borex.lngs.infn.it/saggese
>> You can still escape from the GATES of hell: Use Linux!
>>
>>
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>
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