diff options
Diffstat (limited to 'sound/usb/stream.c')
| -rw-r--r-- | sound/usb/stream.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index 7db2f8958e79..c4339f97226b 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -493,10 +493,10 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) altsd = get_iface_desc(alts); protocol = altsd->bInterfaceProtocol; /* skip invalid one */ - if ((altsd->bInterfaceClass != USB_CLASS_AUDIO && + if (((altsd->bInterfaceClass != USB_CLASS_AUDIO || + (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && + altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC)) && altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || - (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING && - altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) || altsd->bNumEndpoints < 1 || le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0) continue; @@ -512,6 +512,15 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) if (snd_usb_apply_interface_quirk(chip, iface_no, altno)) continue; + /* + * Roland audio streaming interfaces are marked with protocols + * 0/1/2, but are UAC 1 compatible. + */ + if (USB_ID_VENDOR(chip->usb_id) == 0x0582 && + altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC && + protocol <= 2) + protocol = UAC_VERSION_1; + chconfig = 0; /* get audio formats */ switch (protocol) { @@ -635,6 +644,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress; fp->ep_attr = get_endpoint(alts, 0)->bmAttributes; fp->datainterval = snd_usb_parse_datainterval(chip, alts); + fp->protocol = protocol; fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize); fp->channels = num_channels; if (snd_usb_get_speed(dev) == USB_SPEED_HIGH) @@ -676,7 +686,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no) } /* ok, let's parse further... */ - if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) { + if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream) < 0) { kfree(fp->rate_table); kfree(fp->chmap); kfree(fp); |