summaryrefslogtreecommitdiff
path: root/sound/usb/line6/pod.c
blob: cd44cb5f1310c639f5772705d4660a0ec52425bc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Line 6 Linux USB driver
 *
 * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
 */

#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/usb.h>

#include <sound/core.h>
#include <sound/control.h>

#include "capture.h"
#include "driver.h"
#include "playback.h"

/*
	Locate name in binary program dump
*/
#define	POD_NAME_OFFSET 0
#define	POD_NAME_LENGTH 16

/*
	Other constants
*/
#define POD_CONTROL_SIZE 0x80
#define POD_BUFSIZE_DUMPREQ 7
#define POD_STARTUP_DELAY 1000

/*
	Stages of POD startup procedure
*/
enum {
	POD_STARTUP_VERSIONREQ,
	POD_STARTUP_SETUP,
	POD_STARTUP_DONE,
};

enum {
	LINE6_BASSPODXT,
	LINE6_BASSPODXTLIVE,
	LINE6_BASSPODXTPRO,
	LINE6_POCKETPOD,
	LINE6_PODXT,
	LINE6_PODXTLIVE_POD,
	LINE6_PODXTPRO,
};

struct usb_line6_pod {
	/* Generic Line 6 USB data */
	struct usb_line6 line6;

	/* Instrument monitor level */
	int monitor_level;

	/* Current progress in startup procedure */
	int startup_progress;

	/* Serial number of device */
	u32 serial_number;

	/* Firmware version (x 100) */
	int firmware_version;

	/* Device ID */
	int device_id;
};

#define line6_to_pod(x)		container_of(x, struct usb_line6_pod, line6)

#define POD_SYSEX_CODE 3

/* *INDENT-OFF* */

enum {
	POD_SYSEX_SAVE      = 0x24,
	POD_SYSEX_SYSTEM    = 0x56,
	POD_SYSEX_SYSTEMREQ = 0x57,
	/* POD_SYSEX_UPDATE    = 0x6c, */  /* software update! */
	POD_SYSEX_STORE     = 0x71,
	POD_SYSEX_FINISH    = 0x72,
	POD_SYSEX_DUMPMEM   = 0x73,
	POD_SYSEX_DUMP      = 0x74,
	POD_SYSEX_DUMPREQ   = 0x75

	/* dumps entire internal memory of PODxt Pro */
	/* POD_SYSEX_DUMPMEM2  = 0x76 */
};

enum {
	POD_MONITOR_LEVEL  = 0x04,
	POD_SYSTEM_INVALID = 0x10000
};

/* *INDENT-ON* */

enum {
	POD_DUMP_MEMORY = 2
};

enum {
	POD_BUSY_READ,
	POD_BUSY_WRITE,
	POD_CHANNEL_DIRTY,
	POD_SAVE_PRESSED,
	POD_BUSY_MIDISEND
};

static const struct snd_ratden pod_ratden = {
	.num_min = 78125,
	.num_max = 78125,
	.num_step = 1,
	.den = 2
};

static struct line6_pcm_properties pod_pcm_properties = {
	.playback_hw = {
				  .info = (SNDRV_PCM_INFO_MMAP |
					   SNDRV_PCM_INFO_INTERLEAVED |
					   SNDRV_PCM_INFO_BLOCK_TRANSFER |
					   SNDRV_PCM_INFO_MMAP_VALID |
					   SNDRV_PCM_INFO_PAUSE |
					   SNDRV_PCM_INFO_SYNC_START),
				  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
				  .rates = SNDRV_PCM_RATE_KNOT,
				  .rate_min = 39062,
				  .rate_max = 39063,
				  .channels_min = 2,
				  .channels_max = 2,
				  .buffer_bytes_max = 60000,
				  .period_bytes_min = 64,
				  .period_bytes_max = 8192,
				  .periods_min = 1,
				  .periods_max = 1024},
	.capture_hw = {
				 .info = (SNDRV_PCM_INFO_MMAP |
					  SNDRV_PCM_INFO_INTERLEAVED |
					  SNDRV_PCM_INFO_BLOCK_TRANSFER |
					  SNDRV_PCM_INFO_MMAP_VALID |
					  SNDRV_PCM_INFO_SYNC_START),
				 .formats = SNDRV_PCM_FMTBIT_S24_3LE,
				 .rates = SNDRV_PCM_RATE_KNOT,
				 .rate_min = 39062,
				 .rate_max = 39063,
				 .channels_min = 2,
				 .channels_max = 2,
				 .buffer_bytes_max = 60000,
				 .period_bytes_min = 64,
				 .period_bytes_max = 8192,
				 .periods_min = 1,
				 .periods_max = 1024},
	.rates = {
			    .nrats = 1,
			    .rats = &pod_ratden},
	.bytes_per_channel = 3 /* SNDRV_PCM_FMTBIT_S24_3LE */
};

static const char pod_version_header[] = {
	0xf2, 0x7e, 0x7f, 0x06, 0x02
};

static char *pod_alloc_sysex_buffer(struct usb_line6_pod *pod, int code,
				    int size)
{
	return line6_alloc_sysex_buffer(&pod->line6, POD_SYSEX_CODE, code,
					size);
}

/*
	Process a completely received message.
*/
static void line6_pod_process_message(struct usb_line6 *line6)
{
	struct usb_line6_pod *pod = line6_to_pod(line6);
	const unsigned char *buf = pod->line6.buffer_message;

	if (memcmp(buf, pod_version_header, sizeof(pod_version_header)) == 0) {
		pod->firmware_version = buf[13] * 100 + buf[14] * 10 + buf[15];
		pod->device_id = ((int)buf[8] << 16) | ((int)buf[9] << 8) |
				 (int) buf[10];
		if (pod->startup_progress == POD_STARTUP_VERSIONREQ) {
			pod->startup_progress = POD_STARTUP_SETUP;
			schedule_delayed_work(&line6->startup_work, 0);
		}
		return;
	}

	/* Only look for sysex messages from this device */
	if (buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_DEVICE) &&
	    buf[0] != (LINE6_SYSEX_BEGIN | LINE6_CHANNEL_UNKNOWN)) {
		return;
	}
	if (memcmp(buf + 1, line6_midi_id, sizeof(line6_midi_id)) != 0)
		return;

	if (buf[5] == POD_SYSEX_SYSTEM && buf[6] == POD_MONITOR_LEVEL) {
		short value = ((int)buf[7] << 12) | ((int)buf[8] << 8) |
			      ((int)buf[9] << 4) | (int)buf[10];
		pod->monitor_level = value;
	}
}

/*
	Send system parameter (from integer).
*/
static int pod_set_system_param_int(struct usb_line6_pod *pod, int value,
				    int code)
{
	char *sysex;
	static const int size = 5;

	sysex = pod_alloc_sysex_buffer(pod, POD_SYSEX_SYSTEM, size);
	if (!sysex)
		return -ENOMEM;
	sysex[SYSEX_DATA_OFS] = code;
	sysex[SYSEX_DATA_OFS + 1] = (value >> 12) & 0x0f;
	sysex[SYSEX_DATA_OFS + 2] = (value >> 8) & 0x0f;
	sysex[SYSEX_DATA_OFS + 3] = (value >> 4) & 0x0f;
	sysex[SYSEX_DATA_OFS + 4] = (value) & 0x0f;
	line6_send_sysex_message(&pod->line6, sysex, size);
	kfree(sysex);
	return 0;
}

/*
	"read" request on "serial_number" special file.
*/
static ssize_t serial_number_show(struct device *dev,
				  struct device_attribute *attr, char *buf)
{
	struct snd_card *card = dev_to_snd_card(dev);
	struct usb_line6_pod *pod = card->private_data;

	return sprintf(buf, "%u\n", pod->serial_number);
}

/*
	"read" request on "firmware_version" special file.
*/
static ssize_t firmware_version_show(struct device *dev,
				     struct device_attribute *attr, char *buf)
{
	struct snd_card *card = dev_to_snd_card(dev);
	struct usb_line6_pod *pod = card->private_data;

	return sprintf(buf, "%d.%02d\n", pod->firmware_version / 100,
		       pod->firmware_version % 100);
}

/*
	"read" request on "device_id" special file.
*/
static ssize_t device_id_show(struct device *dev,
			      struct device_attribute *attr, char *buf)
{
	struct snd_card *card = dev_to_snd_card(dev);
	struct usb_line6_pod *pod = card->private_data;

	return sprintf(buf, "%d\n", pod->device_id);
}

/*
	POD startup procedure.
	This is a sequence of functions with special requirements (e.g., must
	not run immediately after initialization, must not run in interrupt
	context). After the last one has finished, the device is ready to use.
*/

static void pod_startup(struct usb_line6 *line6)
{
	struct usb_line6_pod *pod = line6_to_pod(line6);

	switch (pod->startup_progress) {
	case POD_STARTUP_VERSIONREQ:
		/* request firmware version: */
		line6_version_request_async(line6);
		break;
	case POD_STARTUP_SETUP:
		/* serial number: */
		line6_read_serial_number(&pod->line6, &pod->serial_number);

		/* ALSA audio interface: */
		if (snd_card_register(line6->card))
			dev_err(line6->ifcdev, "Failed to register POD card.\n");
		pod->startup_progress = POD_STARTUP_DONE;
		break;
	default:
		break;
	}
}

/* POD special files: */
static DEVICE_ATTR_RO(device_id);
static DEVICE_ATTR_RO(firmware_version);
static DEVICE_ATTR_RO(serial_number);

static struct attribute *pod_dev_attrs[] = {
	&dev_attr_device_id.attr,
	&dev_attr_firmware_version.attr,
	&dev_attr_serial_number.attr,
	NULL
};

static const struct attribute_group pod_dev_attr_group = {
	.name = "pod",
	.attrs = pod_dev_attrs,
};

/* control info callback */
static int snd_pod_control_monitor_info(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 65535;
	return 0;
}

/* control get callback */
static int snd_pod_control_monitor_get(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
	struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6);

	ucontrol->value.integer.value[0] = pod->monitor_level;
	return 0;
}

/* control put callback */
static int snd_pod_control_monitor_put(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
	struct usb_line6_pod *pod = line6_to_pod(line6pcm->line6);

	if (ucontrol->value.integer.value[0] == pod->monitor_level)
		return 0;

	pod->monitor_level = ucontrol->value.integer.value[0];
	pod_set_system_param_int(pod, ucontrol->value.integer.value[0],
				 POD_MONITOR_LEVEL);
	return 1;
}

/* control definition */
static const struct snd_kcontrol_new pod_control_monitor = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Monitor Playback Volume",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = snd_pod_control_monitor_info,
	.get = snd_pod_control_monitor_get,
	.put = snd_pod_control_monitor_put
};

/*
	 Try to init POD device.
*/
static int pod_init(struct usb_line6 *line6,
		    const struct usb_device_id *id)
{
	int err;
	struct usb_line6_pod *pod = line6_to_pod(line6);

	line6->process_message = line6_pod_process_message;
	line6->startup = pod_startup;

	/* create sysfs entries: */
	err = snd_card_add_dev_attr(line6->card, &pod_dev_attr_group);
	if (err < 0)
		return err;

	/* initialize MIDI subsystem: */
	err = line6_init_midi(line6);
	if (err < 0)
		return err;

	/* initialize PCM subsystem: */
	err = line6_init_pcm(line6, &pod_pcm_properties);
	if (err < 0)
		return err;

	/* register monitor control: */
	err = snd_ctl_add(line6->card,
			  snd_ctl_new1(&pod_control_monitor, line6->line6pcm));
	if (err < 0)
		return err;

	/*
	   When the sound card is registered at this point, the PODxt Live
	   displays "Invalid Code Error 07", so we do it later in the event
	   handler.
	 */

	if (pod->line6.properties->capabilities & LINE6_CAP_CONTROL) {
		pod->monitor_level = POD_SYSTEM_INVALID;

		/* initiate startup procedure: */
		schedule_delayed_work(&line6->startup_work,
				      msecs_to_jiffies(POD_STARTUP_DELAY));
	}

	return 0;
}

#define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
#define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)

/* table of devices that work with this driver */
static const struct usb_device_id pod_id_table[] = {
	{ LINE6_DEVICE(0x4250),    .driver_info = LINE6_BASSPODXT },
	{ LINE6_DEVICE(0x4642),    .driver_info = LINE6_BASSPODXTLIVE },
	{ LINE6_DEVICE(0x4252),    .driver_info = LINE6_BASSPODXTPRO },
	{ LINE6_IF_NUM(0x5051, 1), .driver_info = LINE6_POCKETPOD },
	{ LINE6_DEVICE(0x5044),    .driver_info = LINE6_PODXT },
	{ LINE6_IF_NUM(0x4650, 0), .driver_info = LINE6_PODXTLIVE_POD },
	{ LINE6_DEVICE(0x5050),    .driver_info = LINE6_PODXTPRO },
	{}
};

MODULE_DEVICE_TABLE(usb, pod_id_table);

static const struct line6_properties pod_properties_table[] = {
	[LINE6_BASSPODXT] = {
		.id = "BassPODxt",
		.name = "BassPODxt",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI
				| LINE6_CAP_PCM
				| LINE6_CAP_HWMON,
		.altsetting = 5,
		.ep_ctrl_r = 0x84,
		.ep_ctrl_w = 0x03,
		.ep_audio_r = 0x82,
		.ep_audio_w = 0x01,
	},
	[LINE6_BASSPODXTLIVE] = {
		.id = "BassPODxtLive",
		.name = "BassPODxt Live",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI
				| LINE6_CAP_PCM
				| LINE6_CAP_HWMON,
		.altsetting = 1,
		.ep_ctrl_r = 0x84,
		.ep_ctrl_w = 0x03,
		.ep_audio_r = 0x82,
		.ep_audio_w = 0x01,
	},
	[LINE6_BASSPODXTPRO] = {
		.id = "BassPODxtPro",
		.name = "BassPODxt Pro",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI
				| LINE6_CAP_PCM
				| LINE6_CAP_HWMON,
		.altsetting = 5,
		.ep_ctrl_r = 0x84,
		.ep_ctrl_w = 0x03,
		.ep_audio_r = 0x82,
		.ep_audio_w = 0x01,
	},
	[LINE6_POCKETPOD] = {
		.id = "PocketPOD",
		.name = "Pocket POD",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI,
		.altsetting = 0,
		.ep_ctrl_r = 0x82,
		.ep_ctrl_w = 0x02,
		/* no audio channel */
	},
	[LINE6_PODXT] = {
		.id = "PODxt",
		.name = "PODxt",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI
				| LINE6_CAP_PCM
				| LINE6_CAP_HWMON,
		.altsetting = 5,
		.ep_ctrl_r = 0x84,
		.ep_ctrl_w = 0x03,
		.ep_audio_r = 0x82,
		.ep_audio_w = 0x01,
	},
	[LINE6_PODXTLIVE_POD] = {
		.id = "PODxtLive",
		.name = "PODxt Live",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI
				| LINE6_CAP_PCM
				| LINE6_CAP_HWMON,
		.altsetting = 1,
		.ep_ctrl_r = 0x84,
		.ep_ctrl_w = 0x03,
		.ep_audio_r = 0x82,
		.ep_audio_w = 0x01,
	},
	[LINE6_PODXTPRO] = {
		.id = "PODxtPro",
		.name = "PODxt Pro",
		.capabilities	= LINE6_CAP_CONTROL
				| LINE6_CAP_CONTROL_MIDI
				| LINE6_CAP_PCM
				| LINE6_CAP_HWMON,
		.altsetting = 5,
		.ep_ctrl_r = 0x84,
		.ep_ctrl_w = 0x03,
		.ep_audio_r = 0x82,
		.ep_audio_w = 0x01,
	},
};

/*
	Probe USB device.
*/
static int pod_probe(struct usb_interface *interface,
		     const struct usb_device_id *id)
{
	return line6_probe(interface, id, "Line6-POD",
			   &pod_properties_table[id->driver_info],
			   pod_init, sizeof(struct usb_line6_pod));
}

static struct usb_driver pod_driver = {
	.name = KBUILD_MODNAME,
	.probe = pod_probe,
	.disconnect = line6_disconnect,
#ifdef CONFIG_PM
	.suspend = line6_suspend,
	.resume = line6_resume,
	.reset_resume = line6_resume,
#endif
	.id_table = pod_id_table,
};

module_usb_driver(pod_driver);

MODULE_DESCRIPTION("Line 6 POD USB driver");
MODULE_LICENSE("GPL");