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[ALSA] usb-audio - restrict Audigy 2 NX frequencies to 48/96 kHz 

USB generic driver
On the SB Audigy 2 NX, frequency feedback doesn't quite work
when playing at 44.1 kHz, so temporarily disable this frequency.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
hifive-unleashed-5.1
Clemens Ladisch 2005-04-28 09:31:53 +02:00 committed by Jaroslav Kysela
parent ade2916109
commit 8c1872dcf2
1 changed files with 5 additions and 3 deletions
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8
sound/usb/usbaudio.c
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@ -2422,15 +2422,17 @@ static int parse_audio_format(struct usb_device *dev, struct audioformat *fp,
if (err < 0)
return err;
#if 1
/* FIXME: temporary hack for extigy */
/* FIXME: temporary hack for extigy/audigy 2 nx */
/* extigy apparently supports sample rates other than 48k
* but not in ordinary way. so we enable only 48k atm.
*/
if (le16_to_cpu(dev->descriptor.idVendor) == 0x041e &&
le16_to_cpu(dev->descriptor.idProduct) == 0x3000) {
(le16_to_cpu(dev->descriptor.idProduct) == 0x3000 ||
le16_to_cpu(dev->descriptor.idProduct) == 0x3020)) {
if (fmt[3] == USB_FORMAT_TYPE_I &&
stream == SNDRV_PCM_STREAM_PLAYBACK &&
fp->rates != SNDRV_PCM_RATE_48000)
fp->rates != SNDRV_PCM_RATE_48000 &&
fp->rates != SNDRV_PCM_RATE_96000)
return -1; /* use 48k only */
}
#endif