diff options
Diffstat (limited to 'sound/usb/usbaudio.c')
| -rw-r--r-- | sound/usb/usbaudio.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 8fd37596e3a..4dfb91d4398 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -3077,6 +3077,58 @@ static int create_ua1000_quirk(struct snd_usb_audio *chip, return 0; } +/* + * Create a stream for an Edirol UA-101 interface. + * Copy, paste and modify from Edirol UA-1000 + */ +static int create_ua101_quirk(struct snd_usb_audio *chip, + struct usb_interface *iface, + const struct snd_usb_audio_quirk *quirk) +{ + static const struct audioformat ua101_format = { + .format = SNDRV_PCM_FORMAT_S32_LE, + .fmt_type = USB_FORMAT_TYPE_I, + .altsetting = 1, + .altset_idx = 1, + .attributes = 0, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + }; + struct usb_host_interface *alts; + struct usb_interface_descriptor *altsd; + struct audioformat *fp; + int stream, err; + + if (iface->num_altsetting != 2) + return -ENXIO; + alts = &iface->altsetting[1]; + altsd = get_iface_desc(alts); + if (alts->extralen != 18 || alts->extra[1] != USB_DT_CS_INTERFACE || + altsd->bNumEndpoints != 1) + return -ENXIO; + + fp = kmemdup(&ua101_format, sizeof(*fp), GFP_KERNEL); + if (!fp) + return -ENOMEM; + + fp->channels = alts->extra[11]; + fp->iface = altsd->bInterfaceNumber; + fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; + fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; + fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); + fp->rate_max = fp->rate_min = combine_triple(&alts->extra[15]); + + stream = (fp->endpoint & USB_DIR_IN) + ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; + err = add_audio_endpoint(chip, stream, fp); + if (err < 0) { + kfree(fp); + return err; + } + /* FIXME: playback must be synchronized to capture */ + usb_set_interface(chip->dev, fp->iface, 0); + return 0; +} + static int snd_usb_create_quirk(struct snd_usb_audio *chip, struct usb_interface *iface, const struct snd_usb_audio_quirk *quirk); @@ -3258,6 +3310,7 @@ static int snd_usb_create_quirk(struct snd_usb_audio *chip, [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, [QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk, [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk, + [QUIRK_AUDIO_EDIROL_UA101] = create_ua101_quirk, }; if (quirk->type < QUIRK_TYPE_COUNT) { |