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-rw-r--r--sound/usb/quirks.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index f372c624bbf4..e6ce1bbe6ca6 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1000,6 +1000,105 @@ static int snd_usb_axefx3_boot_quirk(struct usb_device *dev)
return 0;
}
+
+#define MICROBOOK_BUF_SIZE 128
+
+static int snd_usb_motu_microbookii_communicate(struct usb_device *dev, u8 *buf,
+ int buf_size, int *length)
+{
+ int err, actual_length;
+
+ err = usb_interrupt_msg(dev, usb_sndintpipe(dev, 0x01), buf, *length,
+ &actual_length, 1000);
+ if (err < 0)
+ return err;
+
+ print_hex_dump(KERN_DEBUG, "MicroBookII snd: ", DUMP_PREFIX_NONE, 16, 1,
+ buf, actual_length, false);
+
+ memset(buf, 0, buf_size);
+
+ err = usb_interrupt_msg(dev, usb_rcvintpipe(dev, 0x82), buf, buf_size,
+ &actual_length, 1000);
+ if (err < 0)
+ return err;
+
+ print_hex_dump(KERN_DEBUG, "MicroBookII rcv: ", DUMP_PREFIX_NONE, 16, 1,
+ buf, actual_length, false);
+
+ *length = actual_length;
+ return 0;
+}
+
+static int snd_usb_motu_microbookii_boot_quirk(struct usb_device *dev)
+{
+ int err, actual_length, poll_attempts = 0;
+ static const u8 set_samplerate_seq[] = { 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x0b, 0x14,
+ 0x00, 0x00, 0x00, 0x01 };
+ static const u8 poll_ready_seq[] = { 0x00, 0x04, 0x00, 0x00,
+ 0x00, 0x00, 0x0b, 0x18 };
+ u8 *buf = kzalloc(MICROBOOK_BUF_SIZE, GFP_KERNEL);
+
+ if (!buf)
+ return -ENOMEM;
+
+ dev_info(&dev->dev, "Waiting for MOTU Microbook II to boot up...\n");
+
+ /* First we tell the device which sample rate to use. */
+ memcpy(buf, set_samplerate_seq, sizeof(set_samplerate_seq));
+ actual_length = sizeof(set_samplerate_seq);
+ err = snd_usb_motu_microbookii_communicate(dev, buf, MICROBOOK_BUF_SIZE,
+ &actual_length);
+
+ if (err < 0) {
+ dev_err(&dev->dev,
+ "failed setting the sample rate for Motu MicroBook II: %d\n",
+ err);
+ goto free_buf;
+ }
+
+ /* Then we poll every 100 ms until the device informs of its readiness. */
+ while (true) {
+ if (++poll_attempts > 100) {
+ dev_err(&dev->dev,
+ "failed booting Motu MicroBook II: timeout\n");
+ err = -ENODEV;
+ goto free_buf;
+ }
+
+ memset(buf, 0, MICROBOOK_BUF_SIZE);
+ memcpy(buf, poll_ready_seq, sizeof(poll_ready_seq));
+
+ actual_length = sizeof(poll_ready_seq);
+ err = snd_usb_motu_microbookii_communicate(
+ dev, buf, MICROBOOK_BUF_SIZE, &actual_length);
+ if (err < 0) {
+ dev_err(&dev->dev,
+ "failed booting Motu MicroBook II: communication error %d\n",
+ err);
+ goto free_buf;
+ }
+
+ /* the device signals its readiness through a message of the
+ * form
+ * XX 06 00 00 00 00 0b 18 00 00 00 01
+ * If the device is not yet ready to accept audio data, the
+ * last byte of that sequence is 00.
+ */
+ if (actual_length == 12 && buf[actual_length - 1] == 1)
+ break;
+
+ msleep(100);
+ }
+
+ dev_info(&dev->dev, "MOTU MicroBook II ready\n");
+
+free_buf:
+ kfree(buf);
+ return err;
+}
+
/*
* Setup quirks
*/
@@ -1177,6 +1276,8 @@ int snd_usb_apply_boot_quirk(struct usb_device *dev,
return snd_usb_gamecon780_boot_quirk(dev);
case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx 3 */
return snd_usb_axefx3_boot_quirk(dev);
+ case USB_ID(0x07fd, 0x0004): /* MOTU MicroBook II */
+ return snd_usb_motu_microbookii_boot_quirk(dev);
}
return 0;