Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 1 | /* |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 2 | * Line6 Linux USB driver - 0.9.1beta |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 3 | * |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 4 | * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License as |
| 8 | * published by the Free Software Foundation, version 2. |
| 9 | * |
| 10 | */ |
| 11 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 12 | #include <linux/slab.h> |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 13 | #include <linux/usb.h> |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 14 | #include <sound/core.h> |
| 15 | #include <sound/rawmidi.h> |
| 16 | |
| 17 | #include "audio.h" |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 18 | #include "driver.h" |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 19 | #include "midi.h" |
| 20 | #include "pod.h" |
| 21 | #include "usbdefs.h" |
| 22 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 23 | #define line6_rawmidi_substream_midi(substream) \ |
| 24 | ((struct snd_line6_midi *)((substream)->rmidi->private_data)) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 25 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 26 | static int send_midi_async(struct usb_line6 *line6, unsigned char *data, |
| 27 | int length); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 28 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 29 | /* |
| 30 | Pass data received via USB to MIDI. |
| 31 | */ |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 32 | void line6_midi_receive(struct usb_line6 *line6, unsigned char *data, |
| 33 | int length) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 34 | { |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 35 | if (line6->line6midi->substream_receive) |
| 36 | snd_rawmidi_receive(line6->line6midi->substream_receive, |
| 37 | data, length); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | /* |
| 41 | Read data from MIDI buffer and transmit them via USB. |
| 42 | */ |
| 43 | static void line6_midi_transmit(struct snd_rawmidi_substream *substream) |
| 44 | { |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 45 | struct usb_line6 *line6 = |
| 46 | line6_rawmidi_substream_midi(substream)->line6; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 47 | struct snd_line6_midi *line6midi = line6->line6midi; |
Stefan Hajnoczi | 269edc8 | 2013-01-11 23:08:09 +0100 | [diff] [blame] | 48 | struct midi_buffer *mb = &line6midi->midibuf_out; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 49 | unsigned long flags; |
| 50 | unsigned char chunk[line6->max_packet_size]; |
| 51 | int req, done; |
| 52 | |
| 53 | spin_lock_irqsave(&line6->line6midi->midi_transmit_lock, flags); |
| 54 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 55 | for (;;) { |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 56 | req = min(line6_midibuf_bytes_free(mb), line6->max_packet_size); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 57 | done = snd_rawmidi_transmit_peek(substream, chunk, req); |
| 58 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 59 | if (done == 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 60 | break; |
| 61 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 62 | line6_midibuf_write(mb, chunk, done); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 63 | snd_rawmidi_transmit_ack(substream, done); |
| 64 | } |
| 65 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 66 | for (;;) { |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 67 | done = line6_midibuf_read(mb, chunk, line6->max_packet_size); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 68 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 69 | if (done == 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 70 | break; |
| 71 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 72 | send_midi_async(line6, chunk, done); |
| 73 | } |
| 74 | |
| 75 | spin_unlock_irqrestore(&line6->line6midi->midi_transmit_lock, flags); |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | Notification of completion of MIDI transmission. |
| 80 | */ |
Greg Kroah-Hartman | 0c7ab15 | 2009-02-27 20:28:04 -0800 | [diff] [blame] | 81 | static void midi_sent(struct urb *urb) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 82 | { |
| 83 | unsigned long flags; |
| 84 | int status; |
| 85 | int num; |
| 86 | struct usb_line6 *line6 = (struct usb_line6 *)urb->context; |
| 87 | |
| 88 | status = urb->status; |
| 89 | kfree(urb->transfer_buffer); |
| 90 | usb_free_urb(urb); |
| 91 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 92 | if (status == -ESHUTDOWN) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 93 | return; |
| 94 | |
| 95 | spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags); |
| 96 | num = --line6->line6midi->num_active_send_urbs; |
| 97 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 98 | if (num == 0) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 99 | line6_midi_transmit(line6->line6midi->substream_transmit); |
| 100 | num = line6->line6midi->num_active_send_urbs; |
| 101 | } |
| 102 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 103 | if (num == 0) |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 104 | wake_up(&line6->line6midi->send_wait); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 105 | |
| 106 | spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags); |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | Send an asynchronous MIDI message. |
| 111 | Assumes that line6->line6midi->send_urb_lock is held |
| 112 | (i.e., this function is serialized). |
| 113 | */ |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 114 | static int send_midi_async(struct usb_line6 *line6, unsigned char *data, |
| 115 | int length) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 116 | { |
| 117 | struct urb *urb; |
| 118 | int retval; |
| 119 | unsigned char *transfer_buffer; |
| 120 | |
| 121 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 122 | |
Peter Huewe | 597a1e7 | 2010-12-07 23:38:02 +0100 | [diff] [blame] | 123 | if (urb == NULL) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 124 | dev_err(line6->ifcdev, "Out of memory\n"); |
| 125 | return -ENOMEM; |
| 126 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 127 | |
Thomas Meyer | cff8638 | 2011-11-08 20:40:26 +0100 | [diff] [blame] | 128 | transfer_buffer = kmemdup(data, length, GFP_ATOMIC); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 129 | |
Peter Huewe | 597a1e7 | 2010-12-07 23:38:02 +0100 | [diff] [blame] | 130 | if (transfer_buffer == NULL) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 131 | usb_free_urb(urb); |
| 132 | dev_err(line6->ifcdev, "Out of memory\n"); |
| 133 | return -ENOMEM; |
| 134 | } |
| 135 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 136 | usb_fill_int_urb(urb, line6->usbdev, |
| 137 | usb_sndbulkpipe(line6->usbdev, |
| 138 | line6->ep_control_write), |
| 139 | transfer_buffer, length, midi_sent, line6, |
| 140 | line6->interval); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 141 | urb->actual_length = 0; |
| 142 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
| 143 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 144 | if (retval < 0) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 145 | dev_err(line6->ifcdev, "usb_submit_urb failed\n"); |
| 146 | usb_free_urb(urb); |
Ashvini Varatharaj | 88ef9b1 | 2013-10-19 21:53:37 +0530 | [diff] [blame] | 147 | return retval; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | ++line6->line6midi->num_active_send_urbs; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static int line6_midi_output_open(struct snd_rawmidi_substream *substream) |
| 155 | { |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int line6_midi_output_close(struct snd_rawmidi_substream *substream) |
| 160 | { |
| 161 | return 0; |
| 162 | } |
| 163 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 164 | static void line6_midi_output_trigger(struct snd_rawmidi_substream *substream, |
| 165 | int up) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 166 | { |
| 167 | unsigned long flags; |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 168 | struct usb_line6 *line6 = |
| 169 | line6_rawmidi_substream_midi(substream)->line6; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 170 | |
| 171 | line6->line6midi->substream_transmit = substream; |
| 172 | spin_lock_irqsave(&line6->line6midi->send_urb_lock, flags); |
| 173 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 174 | if (line6->line6midi->num_active_send_urbs == 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 175 | line6_midi_transmit(substream); |
| 176 | |
| 177 | spin_unlock_irqrestore(&line6->line6midi->send_urb_lock, flags); |
| 178 | } |
| 179 | |
| 180 | static void line6_midi_output_drain(struct snd_rawmidi_substream *substream) |
| 181 | { |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 182 | struct usb_line6 *line6 = |
| 183 | line6_rawmidi_substream_midi(substream)->line6; |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 184 | struct snd_line6_midi *midi = line6->line6midi; |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 185 | wait_event_interruptible(midi->send_wait, |
| 186 | midi->num_active_send_urbs == 0); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | static int line6_midi_input_open(struct snd_rawmidi_substream *substream) |
| 190 | { |
| 191 | return 0; |
| 192 | } |
| 193 | |
| 194 | static int line6_midi_input_close(struct snd_rawmidi_substream *substream) |
| 195 | { |
| 196 | return 0; |
| 197 | } |
| 198 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 199 | static void line6_midi_input_trigger(struct snd_rawmidi_substream *substream, |
| 200 | int up) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 201 | { |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 202 | struct usb_line6 *line6 = |
| 203 | line6_rawmidi_substream_midi(substream)->line6; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 204 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 205 | if (up) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 206 | line6->line6midi->substream_receive = substream; |
| 207 | else |
Sachin Kamat | a0d6f2b | 2013-10-09 15:58:26 +0530 | [diff] [blame] | 208 | line6->line6midi->substream_receive = NULL; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | static struct snd_rawmidi_ops line6_midi_output_ops = { |
| 212 | .open = line6_midi_output_open, |
| 213 | .close = line6_midi_output_close, |
| 214 | .trigger = line6_midi_output_trigger, |
| 215 | .drain = line6_midi_output_drain, |
| 216 | }; |
| 217 | |
| 218 | static struct snd_rawmidi_ops line6_midi_input_ops = { |
| 219 | .open = line6_midi_input_open, |
| 220 | .close = line6_midi_input_close, |
| 221 | .trigger = line6_midi_input_trigger, |
| 222 | }; |
| 223 | |
| 224 | /* |
| 225 | Cleanup the Line6 MIDI device. |
| 226 | */ |
| 227 | static void line6_cleanup_midi(struct snd_rawmidi *rmidi) |
| 228 | { |
| 229 | } |
| 230 | |
| 231 | /* Create a MIDI device */ |
| 232 | static int snd_line6_new_midi(struct snd_line6_midi *line6midi) |
| 233 | { |
| 234 | struct snd_rawmidi *rmidi; |
| 235 | int err; |
| 236 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 237 | err = snd_rawmidi_new(line6midi->line6->card, "Line6 MIDI", 0, 1, 1, |
| 238 | &rmidi); |
| 239 | if (err < 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 240 | return err; |
| 241 | |
| 242 | rmidi->private_data = line6midi; |
| 243 | rmidi->private_free = line6_cleanup_midi; |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 244 | strcpy(rmidi->id, line6midi->line6->properties->id); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 245 | strcpy(rmidi->name, line6midi->line6->properties->name); |
| 246 | |
| 247 | rmidi->info_flags = |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 248 | SNDRV_RAWMIDI_INFO_OUTPUT | |
| 249 | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 250 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 251 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, |
| 252 | &line6_midi_output_ops); |
| 253 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, |
| 254 | &line6_midi_input_ops); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 255 | return 0; |
| 256 | } |
| 257 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 258 | /* MIDI device destructor */ |
| 259 | static int snd_line6_midi_free(struct snd_device *device) |
| 260 | { |
| 261 | struct snd_line6_midi *line6midi = device->device_data; |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 262 | line6_midibuf_destroy(&line6midi->midibuf_in); |
| 263 | line6_midibuf_destroy(&line6midi->midibuf_out); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | /* |
| 268 | Initialize the Line6 MIDI subsystem. |
| 269 | */ |
| 270 | int line6_init_midi(struct usb_line6 *line6) |
| 271 | { |
| 272 | static struct snd_device_ops midi_ops = { |
| 273 | .dev_free = snd_line6_midi_free, |
| 274 | }; |
| 275 | |
| 276 | int err; |
| 277 | struct snd_line6_midi *line6midi; |
| 278 | |
Greg Kroah-Hartman | 027360c | 2010-09-21 16:58:00 -0700 | [diff] [blame] | 279 | if (!(line6->properties->capabilities & LINE6_BIT_CONTROL)) { |
| 280 | /* skip MIDI initialization and report success */ |
| 281 | return 0; |
| 282 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 283 | |
| 284 | line6midi = kzalloc(sizeof(struct snd_line6_midi), GFP_KERNEL); |
| 285 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 286 | if (line6midi == NULL) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 287 | return -ENOMEM; |
| 288 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 289 | err = line6_midibuf_init(&line6midi->midibuf_in, MIDI_BUFFER_SIZE, 0); |
Jesper Juhl | 982d6ab | 2011-10-24 23:41:37 +0200 | [diff] [blame] | 290 | if (err < 0) { |
| 291 | kfree(line6midi); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 292 | return err; |
Jesper Juhl | 982d6ab | 2011-10-24 23:41:37 +0200 | [diff] [blame] | 293 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 294 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 295 | err = line6_midibuf_init(&line6midi->midibuf_out, MIDI_BUFFER_SIZE, 1); |
Jesper Juhl | 982d6ab | 2011-10-24 23:41:37 +0200 | [diff] [blame] | 296 | if (err < 0) { |
| 297 | kfree(line6midi->midibuf_in.buf); |
| 298 | kfree(line6midi); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 299 | return err; |
Jesper Juhl | 982d6ab | 2011-10-24 23:41:37 +0200 | [diff] [blame] | 300 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 301 | |
| 302 | line6midi->line6 = line6; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 303 | line6->line6midi = line6midi; |
| 304 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 305 | err = snd_device_new(line6->card, SNDRV_DEV_RAWMIDI, line6midi, |
| 306 | &midi_ops); |
| 307 | if (err < 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 308 | return err; |
| 309 | |
| 310 | snd_card_set_dev(line6->card, line6->ifcdev); |
| 311 | |
Greg Kroah-Hartman | d7e3733 | 2009-02-27 22:42:55 -0800 | [diff] [blame] | 312 | err = snd_line6_new_midi(line6midi); |
| 313 | if (err < 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 314 | return err; |
| 315 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 316 | init_waitqueue_head(&line6midi->send_wait); |
| 317 | spin_lock_init(&line6midi->send_urb_lock); |
| 318 | spin_lock_init(&line6midi->midi_transmit_lock); |
| 319 | return 0; |
| 320 | } |