Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 1 | /* |
Chris Rorvick | c078a4a | 2015-01-20 02:20:50 -0600 | [diff] [blame] | 2 | * Line 6 Linux USB driver |
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 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 12 | #include <linux/kernel.h> |
| 13 | #include <linux/module.h> |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 14 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/slab.h> |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 16 | #include <linux/usb.h> |
| 17 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 18 | #include <sound/core.h> |
| 19 | #include <sound/initval.h> |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 20 | #include <sound/hwdep.h> |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 21 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 22 | #include "capture.h" |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 23 | #include "driver.h" |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 24 | #include "midi.h" |
| 25 | #include "playback.h" |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 26 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 27 | #define DRIVER_AUTHOR "Markus Grabner <grabner@icg.tugraz.at>" |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 28 | #define DRIVER_DESC "Line 6 USB Driver" |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 29 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 30 | /* |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 31 | This is Line 6's MIDI manufacturer ID. |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 32 | */ |
Takashi Sakamoto | 8da08ca | 2016-09-25 22:00:20 +0900 | [diff] [blame] | 33 | const unsigned char line6_midi_id[3] = { |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 34 | 0x00, 0x01, 0x0c |
| 35 | }; |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 36 | EXPORT_SYMBOL_GPL(line6_midi_id); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 37 | |
| 38 | /* |
| 39 | Code to request version of POD, Variax interface |
| 40 | (and maybe other devices). |
| 41 | */ |
Greg Kroah-Hartman | c46b8a6 | 2012-04-23 16:09:56 -0700 | [diff] [blame] | 42 | static const char line6_request_version[] = { |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 43 | 0xf0, 0x7e, 0x7f, 0x06, 0x01, 0xf7 |
| 44 | }; |
| 45 | |
Takashi Iwai | cddbd4f | 2015-01-28 14:43:11 +0100 | [diff] [blame] | 46 | /* |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 47 | Class for asynchronous messages. |
| 48 | */ |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 49 | struct message { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 50 | struct usb_line6 *line6; |
| 51 | const char *buffer; |
| 52 | int size; |
| 53 | int done; |
| 54 | }; |
| 55 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 56 | /* |
| 57 | Forward declarations. |
| 58 | */ |
Greg Kroah-Hartman | 0c7ab15 | 2009-02-27 20:28:04 -0800 | [diff] [blame] | 59 | static void line6_data_received(struct urb *urb); |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 60 | static int line6_send_raw_message_async_part(struct message *msg, |
| 61 | struct urb *urb); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 62 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 63 | /* |
| 64 | Start to listen on endpoint. |
| 65 | */ |
| 66 | static int line6_start_listen(struct usb_line6 *line6) |
| 67 | { |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 68 | int err; |
Fabian Mewes | a6b4699 | 2014-03-24 23:46:31 +0100 | [diff] [blame] | 69 | |
Andrej Krutak | 174e1fc | 2016-09-18 20:59:26 +0200 | [diff] [blame] | 70 | if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { |
| 71 | usb_fill_int_urb(line6->urb_listen, line6->usbdev, |
| 72 | usb_rcvintpipe(line6->usbdev, line6->properties->ep_ctrl_r), |
| 73 | line6->buffer_listen, LINE6_BUFSIZE_LISTEN, |
| 74 | line6_data_received, line6, line6->interval); |
| 75 | } else { |
| 76 | usb_fill_bulk_urb(line6->urb_listen, line6->usbdev, |
| 77 | usb_rcvbulkpipe(line6->usbdev, line6->properties->ep_ctrl_r), |
| 78 | line6->buffer_listen, LINE6_BUFSIZE_LISTEN, |
| 79 | line6_data_received, line6); |
| 80 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 81 | line6->urb_listen->actual_length = 0; |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 82 | err = usb_submit_urb(line6->urb_listen, GFP_ATOMIC); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 83 | return err; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 84 | } |
| 85 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 86 | /* |
| 87 | Stop listening on endpoint. |
| 88 | */ |
| 89 | static void line6_stop_listen(struct usb_line6 *line6) |
| 90 | { |
| 91 | usb_kill_urb(line6->urb_listen); |
| 92 | } |
| 93 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 94 | /* |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 95 | Send raw message in pieces of wMaxPacketSize bytes. |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 96 | */ |
Takashi Iwai | 7372319 | 2015-01-19 16:36:21 +0100 | [diff] [blame] | 97 | static int line6_send_raw_message(struct usb_line6 *line6, const char *buffer, |
| 98 | int size) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 99 | { |
| 100 | int i, done = 0; |
Andrej Krutak | 174e1fc | 2016-09-18 20:59:26 +0200 | [diff] [blame] | 101 | const struct line6_properties *properties = line6->properties; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 102 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 103 | for (i = 0; i < size; i += line6->max_packet_size) { |
| 104 | int partial; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 105 | const char *frag_buf = buffer + i; |
| 106 | int frag_size = min(line6->max_packet_size, size - i); |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 107 | int retval; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 108 | |
Andrej Krutak | 174e1fc | 2016-09-18 20:59:26 +0200 | [diff] [blame] | 109 | if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) { |
| 110 | retval = usb_interrupt_msg(line6->usbdev, |
| 111 | usb_sndintpipe(line6->usbdev, properties->ep_ctrl_w), |
| 112 | (char *)frag_buf, frag_size, |
| 113 | &partial, LINE6_TIMEOUT * HZ); |
| 114 | } else { |
| 115 | retval = usb_bulk_msg(line6->usbdev, |
| 116 | usb_sndbulkpipe(line6->usbdev, properties->ep_ctrl_w), |
| 117 | (char *)frag_buf, frag_size, |
| 118 | &partial, LINE6_TIMEOUT * HZ); |
| 119 | } |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 120 | |
| 121 | if (retval) { |
| 122 | dev_err(line6->ifcdev, |
Andrej Krutak | 174e1fc | 2016-09-18 20:59:26 +0200 | [diff] [blame] | 123 | "usb_bulk_msg failed (%d)\n", retval); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 124 | break; |
| 125 | } |
| 126 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 127 | done += frag_size; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | return done; |
| 131 | } |
| 132 | |
| 133 | /* |
| 134 | Notification of completion of asynchronous request transmission. |
| 135 | */ |
Greg Kroah-Hartman | 0c7ab15 | 2009-02-27 20:28:04 -0800 | [diff] [blame] | 136 | static void line6_async_request_sent(struct urb *urb) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 137 | { |
| 138 | struct message *msg = (struct message *)urb->context; |
| 139 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 140 | if (msg->done >= msg->size) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 141 | usb_free_urb(urb); |
| 142 | kfree(msg); |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 143 | } else |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 144 | line6_send_raw_message_async_part(msg, urb); |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | Asynchronously send part of a raw message. |
| 149 | */ |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 150 | static int line6_send_raw_message_async_part(struct message *msg, |
| 151 | struct urb *urb) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 152 | { |
| 153 | int retval; |
| 154 | struct usb_line6 *line6 = msg->line6; |
| 155 | int done = msg->done; |
| 156 | int bytes = min(msg->size - done, line6->max_packet_size); |
| 157 | |
Andrej Krutak | 174e1fc | 2016-09-18 20:59:26 +0200 | [diff] [blame] | 158 | if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { |
| 159 | usb_fill_int_urb(urb, line6->usbdev, |
| 160 | usb_sndintpipe(line6->usbdev, line6->properties->ep_ctrl_w), |
| 161 | (char *)msg->buffer + done, bytes, |
| 162 | line6_async_request_sent, msg, line6->interval); |
| 163 | } else { |
| 164 | usb_fill_bulk_urb(urb, line6->usbdev, |
| 165 | usb_sndbulkpipe(line6->usbdev, line6->properties->ep_ctrl_w), |
| 166 | (char *)msg->buffer + done, bytes, |
| 167 | line6_async_request_sent, msg); |
| 168 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 169 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 170 | msg->done += bytes; |
| 171 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
| 172 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 173 | if (retval < 0) { |
| 174 | dev_err(line6->ifcdev, "%s: usb_submit_urb failed (%d)\n", |
| 175 | __func__, retval); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 176 | usb_free_urb(urb); |
| 177 | kfree(msg); |
Ashvini Varatharaj | 056e0af | 2013-10-19 22:01:22 +0530 | [diff] [blame] | 178 | return retval; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | /* |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 185 | Setup and start timer. |
| 186 | */ |
Nicholas Mc Guire | 6ccd93b | 2015-02-03 02:38:56 -0500 | [diff] [blame] | 187 | void line6_start_timer(struct timer_list *timer, unsigned long msecs, |
Monam Agarwal | 1cad608 | 2014-02-27 21:05:18 +0530 | [diff] [blame] | 188 | void (*function)(unsigned long), unsigned long data) |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 189 | { |
| 190 | setup_timer(timer, function, data); |
Nicholas Mc Guire | 695758c | 2015-02-03 02:38:39 -0500 | [diff] [blame] | 191 | mod_timer(timer, jiffies + msecs_to_jiffies(msecs)); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 192 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 193 | EXPORT_SYMBOL_GPL(line6_start_timer); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 194 | |
| 195 | /* |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 196 | Asynchronously send raw message. |
| 197 | */ |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 198 | int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer, |
| 199 | int size) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 200 | { |
| 201 | struct message *msg; |
| 202 | struct urb *urb; |
| 203 | |
| 204 | /* create message: */ |
| 205 | msg = kmalloc(sizeof(struct message), GFP_ATOMIC); |
Joe Perches | 78110bb | 2013-02-11 09:41:29 -0800 | [diff] [blame] | 206 | if (msg == NULL) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 207 | return -ENOMEM; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 208 | |
| 209 | /* create URB: */ |
| 210 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 211 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 212 | if (urb == NULL) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 213 | kfree(msg); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 214 | return -ENOMEM; |
| 215 | } |
| 216 | |
| 217 | /* set message data: */ |
| 218 | msg->line6 = line6; |
| 219 | msg->buffer = buffer; |
| 220 | msg->size = size; |
| 221 | msg->done = 0; |
| 222 | |
| 223 | /* start sending: */ |
| 224 | return line6_send_raw_message_async_part(msg, urb); |
| 225 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 226 | EXPORT_SYMBOL_GPL(line6_send_raw_message_async); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 227 | |
| 228 | /* |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 229 | Send asynchronous device version request. |
| 230 | */ |
| 231 | int line6_version_request_async(struct usb_line6 *line6) |
| 232 | { |
Greg Kroah-Hartman | c46b8a6 | 2012-04-23 16:09:56 -0700 | [diff] [blame] | 233 | char *buffer; |
| 234 | int retval; |
| 235 | |
Laurent Navet | 77ecb6f | 2012-12-03 14:20:25 +0100 | [diff] [blame] | 236 | buffer = kmemdup(line6_request_version, |
| 237 | sizeof(line6_request_version), GFP_ATOMIC); |
Takashi Iwai | a019f5e | 2015-01-19 15:05:10 +0100 | [diff] [blame] | 238 | if (buffer == NULL) |
Greg Kroah-Hartman | c46b8a6 | 2012-04-23 16:09:56 -0700 | [diff] [blame] | 239 | return -ENOMEM; |
Greg Kroah-Hartman | c46b8a6 | 2012-04-23 16:09:56 -0700 | [diff] [blame] | 240 | |
Greg Kroah-Hartman | c46b8a6 | 2012-04-23 16:09:56 -0700 | [diff] [blame] | 241 | retval = line6_send_raw_message_async(line6, buffer, |
| 242 | sizeof(line6_request_version)); |
| 243 | kfree(buffer); |
| 244 | return retval; |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 245 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 246 | EXPORT_SYMBOL_GPL(line6_version_request_async); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 247 | |
| 248 | /* |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 249 | Send sysex message in pieces of wMaxPacketSize bytes. |
| 250 | */ |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 251 | int line6_send_sysex_message(struct usb_line6 *line6, const char *buffer, |
| 252 | int size) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 253 | { |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 254 | return line6_send_raw_message(line6, buffer, |
| 255 | size + SYSEX_EXTRA_SIZE) - |
| 256 | SYSEX_EXTRA_SIZE; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 257 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 258 | EXPORT_SYMBOL_GPL(line6_send_sysex_message); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 259 | |
| 260 | /* |
| 261 | Allocate buffer for sysex message and prepare header. |
| 262 | @param code sysex message code |
| 263 | @param size number of bytes between code and sysex end |
| 264 | */ |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 265 | char *line6_alloc_sysex_buffer(struct usb_line6 *line6, int code1, int code2, |
| 266 | int size) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 267 | { |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 268 | char *buffer = kmalloc(size + SYSEX_EXTRA_SIZE, GFP_ATOMIC); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 269 | |
Joe Perches | 78110bb | 2013-02-11 09:41:29 -0800 | [diff] [blame] | 270 | if (!buffer) |
Greg Kroah-Hartman | 536165d | 2009-02-27 20:49:46 -0800 | [diff] [blame] | 271 | return NULL; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 272 | |
| 273 | buffer[0] = LINE6_SYSEX_BEGIN; |
| 274 | memcpy(buffer + 1, line6_midi_id, sizeof(line6_midi_id)); |
| 275 | buffer[sizeof(line6_midi_id) + 1] = code1; |
| 276 | buffer[sizeof(line6_midi_id) + 2] = code2; |
| 277 | buffer[sizeof(line6_midi_id) + 3 + size] = LINE6_SYSEX_END; |
| 278 | return buffer; |
| 279 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 280 | EXPORT_SYMBOL_GPL(line6_alloc_sysex_buffer); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 281 | |
| 282 | /* |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 283 | Notification of data received from the Line 6 device. |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 284 | */ |
Greg Kroah-Hartman | 0c7ab15 | 2009-02-27 20:28:04 -0800 | [diff] [blame] | 285 | static void line6_data_received(struct urb *urb) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 286 | { |
| 287 | struct usb_line6 *line6 = (struct usb_line6 *)urb->context; |
Stefan Hajnoczi | 269edc8 | 2013-01-11 23:08:09 +0100 | [diff] [blame] | 288 | struct midi_buffer *mb = &line6->line6midi->midibuf_in; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 289 | int done; |
| 290 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 291 | if (urb->status == -ESHUTDOWN) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 292 | return; |
| 293 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 294 | if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 295 | done = |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 296 | line6_midibuf_write(mb, urb->transfer_buffer, urb->actual_length); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 297 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 298 | if (done < urb->actual_length) { |
| 299 | line6_midibuf_ignore(mb, done); |
| 300 | dev_dbg(line6->ifcdev, "%d %d buffer overflow - message skipped\n", |
| 301 | done, urb->actual_length); |
| 302 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 303 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 304 | for (;;) { |
| 305 | done = |
| 306 | line6_midibuf_read(mb, line6->buffer_message, |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 307 | LINE6_MIDI_MESSAGE_MAXLEN); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 308 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 309 | if (done == 0) |
| 310 | break; |
| 311 | |
| 312 | line6->message_length = done; |
| 313 | line6_midi_receive(line6, line6->buffer_message, done); |
| 314 | |
| 315 | if (line6->process_message) |
| 316 | line6->process_message(line6); |
| 317 | } |
| 318 | } else { |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 319 | line6->buffer_message = urb->transfer_buffer; |
| 320 | line6->message_length = urb->actual_length; |
Chris Rorvick | 01f6b2b | 2015-01-12 12:42:58 -0800 | [diff] [blame] | 321 | if (line6->process_message) |
| 322 | line6->process_message(line6); |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 323 | line6->buffer_message = NULL; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | line6_start_listen(line6); |
| 327 | } |
| 328 | |
Chris Rorvick | e64e94d | 2015-02-10 23:03:13 -0600 | [diff] [blame] | 329 | #define LINE6_READ_WRITE_STATUS_DELAY 2 /* milliseconds */ |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 330 | #define LINE6_READ_WRITE_MAX_RETRIES 50 |
Chris Rorvick | e64e94d | 2015-02-10 23:03:13 -0600 | [diff] [blame] | 331 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 332 | /* |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 333 | Read data from device. |
| 334 | */ |
Chris Rorvick | 25a0707 | 2015-02-11 06:03:31 -0600 | [diff] [blame] | 335 | int line6_read_data(struct usb_line6 *line6, unsigned address, void *data, |
| 336 | unsigned datalen) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 337 | { |
| 338 | struct usb_device *usbdev = line6->usbdev; |
| 339 | int ret; |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 340 | unsigned char *len; |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 341 | unsigned count; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 342 | |
Chris Rorvick | 25a0707 | 2015-02-11 06:03:31 -0600 | [diff] [blame] | 343 | if (address > 0xffff || datalen > 0xff) |
| 344 | return -EINVAL; |
| 345 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 346 | len = kmalloc(sizeof(*len), GFP_KERNEL); |
| 347 | if (!len) |
| 348 | return -ENOMEM; |
| 349 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 350 | /* query the serial number: */ |
| 351 | ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67, |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 352 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
| 353 | (datalen << 8) | 0x21, address, |
| 354 | NULL, 0, LINE6_TIMEOUT * HZ); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 355 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 356 | if (ret < 0) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 357 | dev_err(line6->ifcdev, "read request failed (error %d)\n", ret); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 358 | goto exit; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 359 | } |
| 360 | |
Stefan Hajnoczi | bc776f2 | 2013-01-11 23:08:10 +0100 | [diff] [blame] | 361 | /* Wait for data length. We'll get 0xff until length arrives. */ |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 362 | for (count = 0; count < LINE6_READ_WRITE_MAX_RETRIES; count++) { |
Chris Rorvick | e64e94d | 2015-02-10 23:03:13 -0600 | [diff] [blame] | 363 | mdelay(LINE6_READ_WRITE_STATUS_DELAY); |
| 364 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 365 | ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x67, |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 366 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | |
| 367 | USB_DIR_IN, |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 368 | 0x0012, 0x0000, len, 1, |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 369 | LINE6_TIMEOUT * HZ); |
| 370 | if (ret < 0) { |
| 371 | dev_err(line6->ifcdev, |
| 372 | "receive length failed (error %d)\n", ret); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 373 | goto exit; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 374 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 375 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 376 | if (*len != 0xff) |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 377 | break; |
| 378 | } |
| 379 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 380 | ret = -EIO; |
| 381 | if (*len == 0xff) { |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 382 | dev_err(line6->ifcdev, "read failed after %d retries\n", |
| 383 | count); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 384 | goto exit; |
| 385 | } else if (*len != datalen) { |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 386 | /* should be equal or something went wrong */ |
| 387 | dev_err(line6->ifcdev, |
| 388 | "length mismatch (expected %d, got %d)\n", |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 389 | (int)datalen, (int)*len); |
| 390 | goto exit; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | /* receive the result: */ |
| 394 | ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), 0x67, |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 395 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
| 396 | 0x0013, 0x0000, data, datalen, |
| 397 | LINE6_TIMEOUT * HZ); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 398 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 399 | if (ret < 0) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 400 | dev_err(line6->ifcdev, "read failed (error %d)\n", ret); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 401 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 402 | exit: |
| 403 | kfree(len); |
| 404 | return ret; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 405 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 406 | EXPORT_SYMBOL_GPL(line6_read_data); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 407 | |
| 408 | /* |
| 409 | Write data to device. |
| 410 | */ |
Chris Rorvick | 25a0707 | 2015-02-11 06:03:31 -0600 | [diff] [blame] | 411 | int line6_write_data(struct usb_line6 *line6, unsigned address, void *data, |
| 412 | unsigned datalen) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 413 | { |
| 414 | struct usb_device *usbdev = line6->usbdev; |
| 415 | int ret; |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 416 | unsigned char *status; |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 417 | int count; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 418 | |
Chris Rorvick | 25a0707 | 2015-02-11 06:03:31 -0600 | [diff] [blame] | 419 | if (address > 0xffff || datalen > 0xffff) |
| 420 | return -EINVAL; |
| 421 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 422 | status = kmalloc(sizeof(*status), GFP_KERNEL); |
| 423 | if (!status) |
| 424 | return -ENOMEM; |
| 425 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 426 | ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67, |
| 427 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
| 428 | 0x0022, address, data, datalen, |
| 429 | LINE6_TIMEOUT * HZ); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 430 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 431 | if (ret < 0) { |
| 432 | dev_err(line6->ifcdev, |
| 433 | "write request failed (error %d)\n", ret); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 434 | goto exit; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 435 | } |
| 436 | |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 437 | for (count = 0; count < LINE6_READ_WRITE_MAX_RETRIES; count++) { |
Chris Rorvick | e64e94d | 2015-02-10 23:03:13 -0600 | [diff] [blame] | 438 | mdelay(LINE6_READ_WRITE_STATUS_DELAY); |
| 439 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 440 | ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), |
| 441 | 0x67, |
| 442 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | |
| 443 | USB_DIR_IN, |
| 444 | 0x0012, 0x0000, |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 445 | status, 1, LINE6_TIMEOUT * HZ); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 446 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 447 | if (ret < 0) { |
| 448 | dev_err(line6->ifcdev, |
| 449 | "receiving status failed (error %d)\n", ret); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 450 | goto exit; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 451 | } |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 452 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 453 | if (*status != 0xff) |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 454 | break; |
| 455 | } |
| 456 | |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 457 | if (*status == 0xff) { |
Chris Rorvick | f3dfd1b | 2015-02-10 23:03:14 -0600 | [diff] [blame] | 458 | dev_err(line6->ifcdev, "write failed after %d retries\n", |
| 459 | count); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 460 | ret = -EIO; |
| 461 | } else if (*status != 0) { |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 462 | dev_err(line6->ifcdev, "write failed (error %d)\n", ret); |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 463 | ret = -EIO; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 464 | } |
Greg Kroah-Hartman | b9daeb2 | 2019-04-28 18:04:11 +0200 | [diff] [blame] | 465 | exit: |
| 466 | kfree(status); |
| 467 | return ret; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 468 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 469 | EXPORT_SYMBOL_GPL(line6_write_data); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 470 | |
| 471 | /* |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 472 | Read Line 6 device serial number. |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 473 | (POD, TonePort, GuitarPort) |
| 474 | */ |
Chris Rorvick | 12b0015 | 2015-02-10 23:03:16 -0600 | [diff] [blame] | 475 | int line6_read_serial_number(struct usb_line6 *line6, u32 *serial_number) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 476 | { |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 477 | return line6_read_data(line6, 0x80d0, serial_number, |
| 478 | sizeof(*serial_number)); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 479 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 480 | EXPORT_SYMBOL_GPL(line6_read_serial_number); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 481 | |
| 482 | /* |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 483 | Card destructor. |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 484 | */ |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 485 | static void line6_destruct(struct snd_card *card) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 486 | { |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 487 | struct usb_line6 *line6 = card->private_data; |
Takashi Iwai | aca514b | 2015-01-25 18:36:29 +0100 | [diff] [blame] | 488 | struct usb_device *usbdev = line6->usbdev; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 489 | |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 490 | /* Free buffer memory first. We cannot depend on the existence of private |
| 491 | * data from the (podhd) module, it may be gone already during this call |
| 492 | */ |
kbuild test robot | a4bc746 | 2016-09-20 08:10:13 +0800 | [diff] [blame] | 493 | kfree(line6->buffer_message); |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 494 | |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 495 | kfree(line6->buffer_listen); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 496 | |
| 497 | /* then free URBs: */ |
Greg Kroah-Hartman | 36445bc | 2009-02-27 22:42:18 -0800 | [diff] [blame] | 498 | usb_free_urb(line6->urb_listen); |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 499 | line6->urb_listen = NULL; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 500 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 501 | /* decrement reference counters: */ |
| 502 | usb_put_dev(usbdev); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 503 | } |
| 504 | |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 505 | /* get data from endpoint descriptor (see usb_maxpacket): */ |
| 506 | static void line6_get_interval(struct usb_line6 *line6) |
| 507 | { |
| 508 | struct usb_device *usbdev = line6->usbdev; |
Andrej Krutak | 174e1fc | 2016-09-18 20:59:26 +0200 | [diff] [blame] | 509 | const struct line6_properties *properties = line6->properties; |
| 510 | int pipe; |
| 511 | struct usb_host_endpoint *ep; |
| 512 | |
| 513 | if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) { |
| 514 | pipe = |
| 515 | usb_rcvintpipe(line6->usbdev, line6->properties->ep_ctrl_r); |
| 516 | } else { |
| 517 | pipe = |
| 518 | usb_rcvbulkpipe(line6->usbdev, line6->properties->ep_ctrl_r); |
| 519 | } |
| 520 | ep = usbdev->ep_in[usb_pipeendpoint(pipe)]; |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 521 | |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 522 | if (ep) { |
| 523 | line6->interval = ep->desc.bInterval; |
Andrej Krutak | 79faa2b | 2016-09-18 20:59:22 +0200 | [diff] [blame] | 524 | if (usbdev->speed == USB_SPEED_LOW) { |
| 525 | line6->intervals_per_second = USB_LOW_INTERVALS_PER_SECOND; |
| 526 | line6->iso_buffers = USB_LOW_ISO_BUFFERS; |
| 527 | } else { |
| 528 | line6->intervals_per_second = USB_HIGH_INTERVALS_PER_SECOND; |
| 529 | line6->iso_buffers = USB_HIGH_ISO_BUFFERS; |
| 530 | } |
| 531 | |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 532 | line6->max_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); |
| 533 | } else { |
| 534 | dev_err(line6->ifcdev, |
| 535 | "endpoint not available, using fallback values"); |
| 536 | line6->interval = LINE6_FALLBACK_INTERVAL; |
| 537 | line6->max_packet_size = LINE6_FALLBACK_MAXPACKETSIZE; |
| 538 | } |
| 539 | } |
| 540 | |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 541 | |
| 542 | /* Enable buffering of incoming messages, flush the buffer */ |
| 543 | static int line6_hwdep_open(struct snd_hwdep *hw, struct file *file) |
| 544 | { |
| 545 | struct usb_line6 *line6 = hw->private_data; |
| 546 | |
| 547 | /* NOTE: hwdep layer provides atomicity here */ |
| 548 | |
| 549 | line6->messages.active = 1; |
| 550 | |
| 551 | return 0; |
| 552 | } |
| 553 | |
| 554 | /* Stop buffering */ |
| 555 | static int line6_hwdep_release(struct snd_hwdep *hw, struct file *file) |
| 556 | { |
| 557 | struct usb_line6 *line6 = hw->private_data; |
| 558 | |
| 559 | line6->messages.active = 0; |
| 560 | |
| 561 | return 0; |
| 562 | } |
| 563 | |
| 564 | /* Read from circular buffer, return to user */ |
| 565 | static long |
| 566 | line6_hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, |
| 567 | loff_t *offset) |
| 568 | { |
| 569 | struct usb_line6 *line6 = hwdep->private_data; |
| 570 | long rv = 0; |
| 571 | unsigned int out_count; |
| 572 | |
| 573 | if (mutex_lock_interruptible(&line6->messages.read_lock)) |
| 574 | return -ERESTARTSYS; |
| 575 | |
| 576 | while (kfifo_len(&line6->messages.fifo) == 0) { |
| 577 | mutex_unlock(&line6->messages.read_lock); |
| 578 | |
| 579 | rv = wait_event_interruptible( |
| 580 | line6->messages.wait_queue, |
| 581 | kfifo_len(&line6->messages.fifo) != 0); |
| 582 | if (rv < 0) |
| 583 | return rv; |
| 584 | |
| 585 | if (mutex_lock_interruptible(&line6->messages.read_lock)) |
| 586 | return -ERESTARTSYS; |
| 587 | } |
| 588 | |
| 589 | if (kfifo_peek_len(&line6->messages.fifo) > count) { |
| 590 | /* Buffer too small; allow re-read of the current item... */ |
| 591 | rv = -EINVAL; |
| 592 | } else { |
| 593 | rv = kfifo_to_user(&line6->messages.fifo, buf, count, &out_count); |
| 594 | if (rv == 0) |
| 595 | rv = out_count; |
| 596 | } |
| 597 | |
| 598 | mutex_unlock(&line6->messages.read_lock); |
| 599 | return rv; |
| 600 | } |
| 601 | |
| 602 | /* Write directly (no buffering) to device by user*/ |
| 603 | static long |
| 604 | line6_hwdep_write(struct snd_hwdep *hwdep, const char __user *data, long count, |
| 605 | loff_t *offset) |
| 606 | { |
| 607 | struct usb_line6 *line6 = hwdep->private_data; |
| 608 | int rv; |
| 609 | char *data_copy; |
| 610 | |
| 611 | if (count > line6->max_packet_size * LINE6_RAW_MESSAGES_MAXCOUNT) { |
| 612 | /* This is an arbitrary limit - still better than nothing... */ |
| 613 | return -EINVAL; |
| 614 | } |
| 615 | |
| 616 | data_copy = memdup_user(data, count); |
Dan Carpenter | fdd8218 | 2016-10-12 09:21:40 +0300 | [diff] [blame] | 617 | if (IS_ERR(data_copy)) |
| 618 | return PTR_ERR(data_copy); |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 619 | |
| 620 | rv = line6_send_raw_message(line6, data_copy, count); |
| 621 | |
| 622 | kfree(data_copy); |
| 623 | return rv; |
| 624 | } |
| 625 | |
| 626 | static const struct snd_hwdep_ops hwdep_ops = { |
| 627 | .open = line6_hwdep_open, |
| 628 | .release = line6_hwdep_release, |
| 629 | .read = line6_hwdep_read, |
| 630 | .write = line6_hwdep_write, |
| 631 | }; |
| 632 | |
| 633 | /* Insert into circular buffer */ |
| 634 | static void line6_hwdep_push_message(struct usb_line6 *line6) |
| 635 | { |
| 636 | if (!line6->messages.active) |
| 637 | return; |
| 638 | |
| 639 | if (kfifo_avail(&line6->messages.fifo) >= line6->message_length) { |
| 640 | /* No race condition here, there's only one writer */ |
| 641 | kfifo_in(&line6->messages.fifo, |
| 642 | line6->buffer_message, line6->message_length); |
| 643 | } /* else TODO: signal overflow */ |
| 644 | |
| 645 | wake_up_interruptible(&line6->messages.wait_queue); |
| 646 | } |
| 647 | |
| 648 | static int line6_hwdep_init(struct usb_line6 *line6) |
| 649 | { |
| 650 | int err; |
| 651 | struct snd_hwdep *hwdep; |
| 652 | |
| 653 | /* TODO: usb_driver_claim_interface(); */ |
| 654 | line6->process_message = line6_hwdep_push_message; |
| 655 | line6->messages.active = 0; |
| 656 | init_waitqueue_head(&line6->messages.wait_queue); |
| 657 | mutex_init(&line6->messages.read_lock); |
| 658 | INIT_KFIFO(line6->messages.fifo); |
| 659 | |
| 660 | err = snd_hwdep_new(line6->card, "config", 0, &hwdep); |
| 661 | if (err < 0) |
| 662 | goto end; |
| 663 | strcpy(hwdep->name, "config"); |
| 664 | hwdep->iface = SNDRV_HWDEP_IFACE_LINE6; |
| 665 | hwdep->ops = hwdep_ops; |
| 666 | hwdep->private_data = line6; |
| 667 | hwdep->exclusive = true; |
| 668 | |
| 669 | end: |
| 670 | return err; |
| 671 | } |
| 672 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 673 | static int line6_init_cap_control(struct usb_line6 *line6) |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 674 | { |
| 675 | int ret; |
| 676 | |
| 677 | /* initialize USB buffers: */ |
| 678 | line6->buffer_listen = kmalloc(LINE6_BUFSIZE_LISTEN, GFP_KERNEL); |
| 679 | if (!line6->buffer_listen) |
| 680 | return -ENOMEM; |
| 681 | |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 682 | line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL); |
| 683 | if (!line6->urb_listen) |
| 684 | return -ENOMEM; |
| 685 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 686 | if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 687 | line6->buffer_message = kmalloc(LINE6_MIDI_MESSAGE_MAXLEN, GFP_KERNEL); |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 688 | if (!line6->buffer_message) |
| 689 | return -ENOMEM; |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 690 | } else { |
| 691 | ret = line6_hwdep_init(line6); |
| 692 | if (ret < 0) |
| 693 | return ret; |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 694 | } |
| 695 | |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 696 | ret = line6_start_listen(line6); |
| 697 | if (ret < 0) { |
| 698 | dev_err(line6->ifcdev, "cannot start listening: %d\n", ret); |
| 699 | return ret; |
| 700 | } |
| 701 | |
| 702 | return 0; |
| 703 | } |
| 704 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 705 | /* |
| 706 | Probe USB device. |
| 707 | */ |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 708 | int line6_probe(struct usb_interface *interface, |
Takashi Iwai | f66fd99 | 2015-01-25 18:22:58 +0100 | [diff] [blame] | 709 | const struct usb_device_id *id, |
Chris Rorvick | 12865ca | 2015-02-07 10:43:19 -0600 | [diff] [blame] | 710 | const char *driver_name, |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 711 | const struct line6_properties *properties, |
Takashi Iwai | aca514b | 2015-01-25 18:36:29 +0100 | [diff] [blame] | 712 | int (*private_init)(struct usb_line6 *, const struct usb_device_id *id), |
| 713 | size_t data_size) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 714 | { |
Chris Rorvick | 35ae48a | 2015-01-20 02:20:48 -0600 | [diff] [blame] | 715 | struct usb_device *usbdev = interface_to_usbdev(interface); |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 716 | struct snd_card *card; |
Takashi Iwai | aca514b | 2015-01-25 18:36:29 +0100 | [diff] [blame] | 717 | struct usb_line6 *line6; |
Chris Rorvick | 7b9584f | 2015-01-12 12:42:52 -0800 | [diff] [blame] | 718 | int interface_number; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 719 | int ret; |
| 720 | |
Takashi Iwai | aca514b | 2015-01-25 18:36:29 +0100 | [diff] [blame] | 721 | if (WARN_ON(data_size < sizeof(*line6))) |
| 722 | return -EINVAL; |
| 723 | |
Takashi Iwai | d6ca69d | 2015-01-25 18:41:26 +0100 | [diff] [blame] | 724 | /* we don't handle multiple configurations */ |
| 725 | if (usbdev->descriptor.bNumConfigurations != 1) |
| 726 | return -ENODEV; |
| 727 | |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 728 | ret = snd_card_new(&interface->dev, |
| 729 | SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
Takashi Iwai | aca514b | 2015-01-25 18:36:29 +0100 | [diff] [blame] | 730 | THIS_MODULE, data_size, &card); |
| 731 | if (ret < 0) |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 732 | return ret; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 733 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 734 | /* store basic data: */ |
Takashi Iwai | aca514b | 2015-01-25 18:36:29 +0100 | [diff] [blame] | 735 | line6 = card->private_data; |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 736 | line6->card = card; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 737 | line6->properties = properties; |
| 738 | line6->usbdev = usbdev; |
| 739 | line6->ifcdev = &interface->dev; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 740 | |
Takashi Iwai | d6ca69d | 2015-01-25 18:41:26 +0100 | [diff] [blame] | 741 | strcpy(card->id, properties->id); |
Chris Rorvick | 12865ca | 2015-02-07 10:43:19 -0600 | [diff] [blame] | 742 | strcpy(card->driver, driver_name); |
Takashi Iwai | d6ca69d | 2015-01-25 18:41:26 +0100 | [diff] [blame] | 743 | strcpy(card->shortname, properties->name); |
| 744 | sprintf(card->longname, "Line 6 %s at USB %s", properties->name, |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 745 | dev_name(line6->ifcdev)); |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 746 | card->private_free = line6_destruct; |
| 747 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 748 | usb_set_intfdata(interface, line6); |
| 749 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 750 | /* increment reference counters: */ |
| 751 | usb_get_dev(usbdev); |
| 752 | |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 753 | /* initialize device info: */ |
| 754 | dev_info(&interface->dev, "Line 6 %s found\n", properties->name); |
| 755 | |
| 756 | /* query interface number */ |
| 757 | interface_number = interface->cur_altsetting->desc.bInterfaceNumber; |
| 758 | |
Andrej Krutak | 79faa2b | 2016-09-18 20:59:22 +0200 | [diff] [blame] | 759 | /* TODO reserves the bus bandwidth even without actual transfer */ |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 760 | ret = usb_set_interface(usbdev, interface_number, |
Takashi Iwai | d6ca69d | 2015-01-25 18:41:26 +0100 | [diff] [blame] | 761 | properties->altsetting); |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 762 | if (ret < 0) { |
| 763 | dev_err(&interface->dev, "set_interface failed\n"); |
| 764 | goto error; |
| 765 | } |
| 766 | |
Takashi Iwai | 34f840f | 2017-02-07 09:32:30 +0100 | [diff] [blame] | 767 | line6_get_interval(line6); |
| 768 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 769 | if (properties->capabilities & LINE6_CAP_CONTROL) { |
| 770 | ret = line6_init_cap_control(line6); |
Takashi Iwai | 644d908 | 2015-01-23 12:24:03 +0100 | [diff] [blame] | 771 | if (ret < 0) |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 772 | goto error; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 773 | } |
| 774 | |
Chris Rorvick | a23a8bf | 2015-01-12 12:42:42 -0800 | [diff] [blame] | 775 | /* initialize device data based on device: */ |
Takashi Iwai | f66fd99 | 2015-01-25 18:22:58 +0100 | [diff] [blame] | 776 | ret = private_init(line6, id); |
Kulikov Vasiliy | ab366c1 | 2010-07-13 15:22:46 +0400 | [diff] [blame] | 777 | if (ret < 0) |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 778 | goto error; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 779 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 780 | /* creation of additional special files should go here */ |
| 781 | |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 782 | dev_info(&interface->dev, "Line 6 %s now attached\n", |
Takashi Iwai | d6ca69d | 2015-01-25 18:41:26 +0100 | [diff] [blame] | 783 | properties->name); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 784 | |
Kulikov Vasiliy | ab366c1 | 2010-07-13 15:22:46 +0400 | [diff] [blame] | 785 | return 0; |
| 786 | |
Takashi Iwai | 6b562f6 | 2015-01-23 12:27:39 +0100 | [diff] [blame] | 787 | error: |
Takashi Iwai | 4dbe48b | 2017-10-09 14:51:23 +0200 | [diff] [blame] | 788 | /* we can call disconnect callback here because no close-sync is |
| 789 | * needed yet at this point |
| 790 | */ |
| 791 | line6_disconnect(interface); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 792 | return ret; |
| 793 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 794 | EXPORT_SYMBOL_GPL(line6_probe); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 795 | |
| 796 | /* |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 797 | Line 6 device disconnected. |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 798 | */ |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 799 | void line6_disconnect(struct usb_interface *interface) |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 800 | { |
Takashi Iwai | 270fd9c | 2015-01-20 08:40:51 +0100 | [diff] [blame] | 801 | struct usb_line6 *line6 = usb_get_intfdata(interface); |
| 802 | struct usb_device *usbdev = interface_to_usbdev(interface); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 803 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 804 | if (!line6) |
| 805 | return; |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 806 | |
Takashi Iwai | 2a324fc | 2015-01-20 09:58:54 +0100 | [diff] [blame] | 807 | if (WARN_ON(usbdev != line6->usbdev)) |
| 808 | return; |
| 809 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 810 | if (line6->urb_listen != NULL) |
| 811 | line6_stop_listen(line6); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 812 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 813 | snd_card_disconnect(line6->card); |
Takashi Iwai | 5a47531 | 2015-01-19 16:15:54 +0100 | [diff] [blame] | 814 | if (line6->line6pcm) |
| 815 | line6_pcm_disconnect(line6->line6pcm); |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 816 | if (line6->disconnect) |
Takashi Iwai | f66fd99 | 2015-01-25 18:22:58 +0100 | [diff] [blame] | 817 | line6->disconnect(line6); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 818 | |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 819 | dev_info(&interface->dev, "Line 6 %s now disconnected\n", |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 820 | line6->properties->name); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 821 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 822 | /* make sure the device isn't destructed twice: */ |
| 823 | usb_set_intfdata(interface, NULL); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 824 | |
Takashi Iwai | 85a9339 | 2015-01-19 15:54:00 +0100 | [diff] [blame] | 825 | snd_card_free_when_closed(line6->card); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 826 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 827 | EXPORT_SYMBOL_GPL(line6_disconnect); |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 828 | |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 829 | #ifdef CONFIG_PM |
| 830 | |
| 831 | /* |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 832 | Suspend Line 6 device. |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 833 | */ |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 834 | int line6_suspend(struct usb_interface *interface, pm_message_t message) |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 835 | { |
| 836 | struct usb_line6 *line6 = usb_get_intfdata(interface); |
| 837 | struct snd_line6_pcm *line6pcm = line6->line6pcm; |
| 838 | |
| 839 | snd_power_change_state(line6->card, SNDRV_CTL_POWER_D3hot); |
| 840 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 841 | if (line6->properties->capabilities & LINE6_CAP_CONTROL) |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 842 | line6_stop_listen(line6); |
| 843 | |
| 844 | if (line6pcm != NULL) { |
| 845 | snd_pcm_suspend_all(line6pcm->pcm); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 846 | line6pcm->flags = 0; |
| 847 | } |
| 848 | |
| 849 | return 0; |
| 850 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 851 | EXPORT_SYMBOL_GPL(line6_suspend); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 852 | |
| 853 | /* |
Chris Rorvick | c6fffce | 2015-01-20 02:20:49 -0600 | [diff] [blame] | 854 | Resume Line 6 device. |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 855 | */ |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 856 | int line6_resume(struct usb_interface *interface) |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 857 | { |
| 858 | struct usb_line6 *line6 = usb_get_intfdata(interface); |
| 859 | |
Andrej Krutak | 7811a3a | 2016-09-18 20:59:27 +0200 | [diff] [blame] | 860 | if (line6->properties->capabilities & LINE6_CAP_CONTROL) |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 861 | line6_start_listen(line6); |
| 862 | |
| 863 | snd_power_change_state(line6->card, SNDRV_CTL_POWER_D0); |
| 864 | return 0; |
| 865 | } |
Takashi Iwai | ccddbe4 | 2015-01-15 08:22:31 +0100 | [diff] [blame] | 866 | EXPORT_SYMBOL_GPL(line6_resume); |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 867 | |
Markus Grabner | e1a164d | 2010-08-23 01:08:25 +0200 | [diff] [blame] | 868 | #endif /* CONFIG_PM */ |
Markus Grabner | 1027f476 | 2010-08-12 01:35:30 +0200 | [diff] [blame] | 869 | |
Markus Grabner | 705ecec | 2009-02-27 19:43:04 -0800 | [diff] [blame] | 870 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 871 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 872 | MODULE_LICENSE("GPL"); |
Andrej Krutak | a16039c | 2016-09-18 20:59:32 +0200 | [diff] [blame] | 873 | |