static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *cdev,
struct snd_rawmidi_substream *substream)
{
int len, ret;
struct device *dev = caiaqdev_to_dev(cdev);
cdev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
cdev->midi_out_buf[1] = 0; /* port */
len = snd_rawmidi_transmit(substream, cdev->midi_out_buf + 3,
EP1_BUFSIZE - 3);
if (len <= 0)
return;
cdev->midi_out_buf[2] = len;
cdev->midi_out_urb.transfer_buffer_length = len+3;
ret = usb_submit_urb(&cdev->midi_out_urb, GFP_ATOMIC);
if (ret < 0)
dev_err(dev,
"snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
"ret=%d, len=%d\n", substream, ret, len);
else
cdev->midi_out_active = 1;
}
int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev,
int rate, int depth, int bpp)
{
int ret;
char tmp[5];
struct device *dev = caiaqdev_to_dev(cdev);
switch (rate) {
case 44100: tmp[0] = SAMPLERATE_44100; break;
case 48000: tmp[0] = SAMPLERATE_48000; break;
case 88200: tmp[0] = SAMPLERATE_88200; break;
case 96000: tmp[0] = SAMPLERATE_96000; break;
case 192000: tmp[0] = SAMPLERATE_192000; break;
default: return -EINVAL;
}
switch (depth) {
case 16: tmp[1] = DEPTH_16; break;
case 24: tmp[1] = DEPTH_24; break;
default: return -EINVAL;
}
tmp[2] = bpp & 0xff;
tmp[3] = bpp >> 8;
tmp[4] = 1; /* packets per microframe */
dev_dbg(dev, "setting audio params: %d Hz, %d bits, %d bpp\n",
rate, depth, bpp);
cdev->audio_parm_answer = -1;
ret = snd_usb_caiaq_send_command(cdev, EP1_CMD_AUDIO_PARAMS,
tmp, sizeof(tmp));
if (ret)
return ret;
if (!wait_event_timeout(cdev->ep1_wait_queue,
cdev->audio_parm_answer >= 0, HZ))
return -EPIPE;
if (cdev->audio_parm_answer != 1)
dev_dbg(dev, "unable to set the device's audio params\n");
else
cdev->bpp = bpp;
return cdev->audio
