diff options
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/clock.c | 47 |
1 files changed, 23 insertions, 24 deletions
diff --git a/sound/usb/clock.c b/sound/usb/clock.c index 9e2703a..e3ccf3d 100644 --- a/sound/usb/clock.c +++ b/sound/usb/clock.c @@ -247,6 +247,27 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface, return 0; } +static int get_sample_rate_v2(struct snd_usb_audio *chip, int iface, + int altsetting, int clock) +{ + struct usb_device *dev = chip->dev; + unsigned char data[4]; + int err; + + err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, + UAC2_CS_CONTROL_SAM_FREQ << 8, + snd_usb_ctrl_intf(chip) | (clock << 8), + data, sizeof(data)); + if (err < 0) { + snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n", + dev->devnum, iface, altsetting); + return 0; + } + + return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); +} + static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface, struct usb_host_interface *alts, struct audioformat *fmt, int rate) @@ -266,18 +287,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface, return -ENXIO; } - err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR, - USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - UAC2_CS_CONTROL_SAM_FREQ << 8, - snd_usb_ctrl_intf(chip) | (clock << 8), - data, sizeof(data)); - if (err < 0) { - snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n", - dev->devnum, iface, fmt->altsetting); - prev_rate = 0; - } else { - prev_rate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); - } + prev_rate = get_sample_rate_v2(chip, iface, fmt->altsetting, clock); data[0] = rate; data[1] = rate >> 8; @@ -293,18 +303,7 @@ static int set_sample_rate_v2(struct snd_usb_audio *chip, int iface, return err; } - err = snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0), UAC2_CS_CUR, - USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - UAC2_CS_CONTROL_SAM_FREQ << 8, - snd_usb_ctrl_intf(chip) | (clock << 8), - data, sizeof(data)); - if (err < 0) { - snd_printk(KERN_WARNING "%d:%d:%d: cannot get freq (v2)\n", - dev->devnum, iface, fmt->altsetting); - cur_rate = 0; - } else { - cur_rate = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24); - } + cur_rate = get_sample_rate_v2(chip, iface, fmt->altsetting, clock); if (cur_rate != rate) { snd_printd(KERN_WARNING |
