diff options
Diffstat (limited to 'sound/usb/pcm.c')
| -rw-r--r-- | sound/usb/pcm.c | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 2bf0d77d176..056587de7be 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -120,10 +120,6 @@ static int init_pitch_v1(struct snd_usb_audio *chip, int iface, ep = get_endpoint(alts, 0)->bEndpointAddress; - /* if endpoint doesn't have pitch control, bail out */ - if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) - return 0; - data[0] = 1; if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC_SET_CUR, USB_TYPE_CLASS|USB_RECIP_ENDPOINT|USB_DIR_OUT, @@ -137,8 +133,32 @@ static int init_pitch_v1(struct snd_usb_audio *chip, int iface, return 0; } +static int init_pitch_v2(struct snd_usb_audio *chip, int iface, + struct usb_host_interface *alts, + struct audioformat *fmt) +{ + struct usb_device *dev = chip->dev; + unsigned char data[1]; + unsigned int ep; + int err; + + ep = get_endpoint(alts, 0)->bEndpointAddress; + + data[0] = 1; + if ((err = snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0), UAC2_CS_CUR, + USB_TYPE_CLASS | USB_RECIP_ENDPOINT | USB_DIR_OUT, + UAC2_EP_CS_PITCH << 8, 0, + data, sizeof(data), 1000)) < 0) { + snd_printk(KERN_ERR "%d:%d:%d: cannot set enable PITCH (v2)\n", + dev->devnum, iface, fmt->altsetting); + return err; + } + + return 0; +} + /* - * initialize the picth control and sample rate + * initialize the pitch control and sample rate */ int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts, @@ -146,13 +166,16 @@ int snd_usb_init_pitch(struct snd_usb_audio *chip, int iface, { struct usb_interface_descriptor *altsd = get_iface_desc(alts); + /* if endpoint doesn't have pitch control, bail out */ + if (!(fmt->attributes & UAC_EP_CS_ATTR_PITCH_CONTROL)) + return 0; + switch (altsd->bInterfaceProtocol) { case UAC_VERSION_1: return init_pitch_v1(chip, iface, alts, fmt); case UAC_VERSION_2: - /* not implemented yet */ - return 0; + return init_pitch_v2(chip, iface, alts, fmt); } return -EINVAL; |