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Linux/sound/usb/line6/toneport.c

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  1 /*
  2  * Line 6 Linux USB driver
  3  *
  4  * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
  5  *                         Emil Myhrman (emil.myhrman@gmail.com)
  6  *
  7  *      This program is free software; you can redistribute it and/or
  8  *      modify it under the terms of the GNU General Public License as
  9  *      published by the Free Software Foundation, version 2.
 10  *
 11  */
 12 
 13 #include <linux/wait.h>
 14 #include <linux/usb.h>
 15 #include <linux/slab.h>
 16 #include <linux/module.h>
 17 #include <linux/leds.h>
 18 #include <sound/core.h>
 19 #include <sound/control.h>
 20 
 21 #include "capture.h"
 22 #include "driver.h"
 23 #include "playback.h"
 24 
 25 enum line6_device_type {
 26         LINE6_GUITARPORT,
 27         LINE6_PODSTUDIO_GX,
 28         LINE6_PODSTUDIO_UX1,
 29         LINE6_PODSTUDIO_UX2,
 30         LINE6_TONEPORT_GX,
 31         LINE6_TONEPORT_UX1,
 32         LINE6_TONEPORT_UX2,
 33 };
 34 
 35 struct usb_line6_toneport;
 36 
 37 struct toneport_led {
 38         struct led_classdev dev;
 39         char name[64];
 40         struct usb_line6_toneport *toneport;
 41         bool registered;
 42 };
 43 
 44 struct usb_line6_toneport {
 45         /* Generic Line 6 USB data */
 46         struct usb_line6 line6;
 47 
 48         /* Source selector */
 49         int source;
 50 
 51         /* Serial number of device */
 52         u32 serial_number;
 53 
 54         /* Firmware version (x 100) */
 55         u8 firmware_version;
 56 
 57         /* Timer for delayed PCM startup */
 58         struct timer_list timer;
 59 
 60         /* Device type */
 61         enum line6_device_type type;
 62 
 63         /* LED instances */
 64         struct toneport_led leds[2];
 65 };
 66 
 67 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);
 68 
 69 #define TONEPORT_PCM_DELAY 1
 70 
 71 static struct snd_ratden toneport_ratden = {
 72         .num_min = 44100,
 73         .num_max = 44100,
 74         .num_step = 1,
 75         .den = 1
 76 };
 77 
 78 static struct line6_pcm_properties toneport_pcm_properties = {
 79         .playback_hw = {
 80                                   .info = (SNDRV_PCM_INFO_MMAP |
 81                                            SNDRV_PCM_INFO_INTERLEAVED |
 82                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
 83                                            SNDRV_PCM_INFO_MMAP_VALID |
 84                                            SNDRV_PCM_INFO_PAUSE |
 85                                            SNDRV_PCM_INFO_SYNC_START),
 86                                   .formats = SNDRV_PCM_FMTBIT_S16_LE,
 87                                   .rates = SNDRV_PCM_RATE_KNOT,
 88                                   .rate_min = 44100,
 89                                   .rate_max = 44100,
 90                                   .channels_min = 2,
 91                                   .channels_max = 2,
 92                                   .buffer_bytes_max = 60000,
 93                                   .period_bytes_min = 64,
 94                                   .period_bytes_max = 8192,
 95                                   .periods_min = 1,
 96                                   .periods_max = 1024},
 97         .capture_hw = {
 98                                  .info = (SNDRV_PCM_INFO_MMAP |
 99                                           SNDRV_PCM_INFO_INTERLEAVED |
100                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
101                                           SNDRV_PCM_INFO_MMAP_VALID |
102                                           SNDRV_PCM_INFO_SYNC_START),
103                                  .formats = SNDRV_PCM_FMTBIT_S16_LE,
104                                  .rates = SNDRV_PCM_RATE_KNOT,
105                                  .rate_min = 44100,
106                                  .rate_max = 44100,
107                                  .channels_min = 2,
108                                  .channels_max = 2,
109                                  .buffer_bytes_max = 60000,
110                                  .period_bytes_min = 64,
111                                  .period_bytes_max = 8192,
112                                  .periods_min = 1,
113                                  .periods_max = 1024},
114         .rates = {
115                             .nrats = 1,
116                             .rats = &toneport_ratden},
117         .bytes_per_channel = 2
118 };
119 
120 static const struct {
121         const char *name;
122         int code;
123 } toneport_source_info[] = {
124         {"Microphone", 0x0a01},
125         {"Line", 0x0801},
126         {"Instrument", 0x0b01},
127         {"Inst & Mic", 0x0901}
128 };
129 
130 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
131 {
132         int ret;
133 
134         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
135                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
136                               cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);
137 
138         if (ret < 0) {
139                 dev_err(&usbdev->dev, "send failed (error %d)\n", ret);
140                 return ret;
141         }
142 
143         return 0;
144 }
145 
146 /* monitor info callback */
147 static int snd_toneport_monitor_info(struct snd_kcontrol *kcontrol,
148                                      struct snd_ctl_elem_info *uinfo)
149 {
150         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
151         uinfo->count = 1;
152         uinfo->value.integer.min = 0;
153         uinfo->value.integer.max = 256;
154         return 0;
155 }
156 
157 /* monitor get callback */
158 static int snd_toneport_monitor_get(struct snd_kcontrol *kcontrol,
159                                     struct snd_ctl_elem_value *ucontrol)
160 {
161         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
162 
163         ucontrol->value.integer.value[0] = line6pcm->volume_monitor;
164         return 0;
165 }
166 
167 /* monitor put callback */
168 static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol,
169                                     struct snd_ctl_elem_value *ucontrol)
170 {
171         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
172         int err;
173 
174         if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor)
175                 return 0;
176 
177         line6pcm->volume_monitor = ucontrol->value.integer.value[0];
178 
179         if (line6pcm->volume_monitor > 0) {
180                 err = line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR, true);
181                 if (err < 0) {
182                         line6pcm->volume_monitor = 0;
183                         line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR);
184                         return err;
185                 }
186         } else {
187                 line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR);
188         }
189 
190         return 1;
191 }
192 
193 /* source info callback */
194 static int snd_toneport_source_info(struct snd_kcontrol *kcontrol,
195                                     struct snd_ctl_elem_info *uinfo)
196 {
197         const int size = ARRAY_SIZE(toneport_source_info);
198 
199         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
200         uinfo->count = 1;
201         uinfo->value.enumerated.items = size;
202 
203         if (uinfo->value.enumerated.item >= size)
204                 uinfo->value.enumerated.item = size - 1;
205 
206         strcpy(uinfo->value.enumerated.name,
207                toneport_source_info[uinfo->value.enumerated.item].name);
208 
209         return 0;
210 }
211 
212 /* source get callback */
213 static int snd_toneport_source_get(struct snd_kcontrol *kcontrol,
214                                    struct snd_ctl_elem_value *ucontrol)
215 {
216         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
217         struct usb_line6_toneport *toneport =
218             (struct usb_line6_toneport *)line6pcm->line6;
219         ucontrol->value.enumerated.item[0] = toneport->source;
220         return 0;
221 }
222 
223 /* source put callback */
224 static int snd_toneport_source_put(struct snd_kcontrol *kcontrol,
225                                    struct snd_ctl_elem_value *ucontrol)
226 {
227         struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
228         struct usb_line6_toneport *toneport =
229             (struct usb_line6_toneport *)line6pcm->line6;
230         unsigned int source;
231 
232         source = ucontrol->value.enumerated.item[0];
233         if (source >= ARRAY_SIZE(toneport_source_info))
234                 return -EINVAL;
235         if (source == toneport->source)
236                 return 0;
237 
238         toneport->source = source;
239         toneport_send_cmd(toneport->line6.usbdev,
240                           toneport_source_info[source].code, 0x0000);
241         return 1;
242 }
243 
244 static void toneport_start_pcm(struct timer_list *t)
245 {
246         struct usb_line6_toneport *toneport = from_timer(toneport, t, timer);
247         struct usb_line6 *line6 = &toneport->line6;
248 
249         line6_pcm_acquire(line6->line6pcm, LINE6_STREAM_MONITOR, true);
250 }
251 
252 /* control definition */
253 static const struct snd_kcontrol_new toneport_control_monitor = {
254         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
255         .name = "Monitor Playback Volume",
256         .index = 0,
257         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
258         .info = snd_toneport_monitor_info,
259         .get = snd_toneport_monitor_get,
260         .put = snd_toneport_monitor_put
261 };
262 
263 /* source selector definition */
264 static const struct snd_kcontrol_new toneport_control_source = {
265         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
266         .name = "PCM Capture Source",
267         .index = 0,
268         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
269         .info = snd_toneport_source_info,
270         .get = snd_toneport_source_get,
271         .put = snd_toneport_source_put
272 };
273 
274 /*
275         For the led on Guitarport.
276         Brightness goes from 0x00 to 0x26. Set a value above this to have led
277         blink.
278         (void cmd_0x02(byte red, byte green)
279 */
280 
281 static bool toneport_has_led(struct usb_line6_toneport *toneport)
282 {
283         switch (toneport->type) {
284         case LINE6_GUITARPORT:
285         case LINE6_TONEPORT_GX:
286         /* add your device here if you are missing support for the LEDs */
287                 return true;
288 
289         default:
290                 return false;
291         }
292 }
293 
294 static const char * const led_colors[2] = { "red", "green" };
295 static const int led_init_vals[2] = { 0x00, 0x26 };
296 
297 static void toneport_update_led(struct usb_line6_toneport *toneport)
298 {
299         toneport_send_cmd(toneport->line6.usbdev,
300                           (toneport->leds[0].dev.brightness << 8) | 0x0002,
301                           toneport->leds[1].dev.brightness);
302 }
303 
304 static void toneport_led_brightness_set(struct led_classdev *led_cdev,
305                                         enum led_brightness brightness)
306 {
307         struct toneport_led *leds =
308                 container_of(led_cdev, struct toneport_led, dev);
309         toneport_update_led(leds->toneport);
310 }
311 
312 static int toneport_init_leds(struct usb_line6_toneport *toneport)
313 {
314         struct device *dev = &toneport->line6.usbdev->dev;
315         int i, err;
316 
317         for (i = 0; i < 2; i++) {
318                 struct toneport_led *led = &toneport->leds[i];
319                 struct led_classdev *leddev = &led->dev;
320 
321                 led->toneport = toneport;
322                 snprintf(led->name, sizeof(led->name), "%s::%s",
323                          dev_name(dev), led_colors[i]);
324                 leddev->name = led->name;
325                 leddev->brightness = led_init_vals[i];
326                 leddev->max_brightness = 0x26;
327                 leddev->brightness_set = toneport_led_brightness_set;
328                 err = led_classdev_register(dev, leddev);
329                 if (err)
330                         return err;
331                 led->registered = true;
332         }
333 
334         return 0;
335 }
336 
337 static void toneport_remove_leds(struct usb_line6_toneport *toneport)
338 {
339         struct toneport_led *led;
340         int i;
341 
342         for (i = 0; i < 2; i++) {
343                 led = &toneport->leds[i];
344                 if (!led->registered)
345                         break;
346                 led_classdev_unregister(&led->dev);
347                 led->registered = false;
348         }
349 }
350 
351 static bool toneport_has_source_select(struct usb_line6_toneport *toneport)
352 {
353         switch (toneport->type) {
354         case LINE6_TONEPORT_UX1:
355         case LINE6_TONEPORT_UX2:
356         case LINE6_PODSTUDIO_UX1:
357         case LINE6_PODSTUDIO_UX2:
358                 return true;
359 
360         default:
361                 return false;
362         }
363 }
364 
365 /*
366         Setup Toneport device.
367 */
368 static void toneport_setup(struct usb_line6_toneport *toneport)
369 {
370         int ticks;
371         struct usb_line6 *line6 = &toneport->line6;
372         struct usb_device *usbdev = line6->usbdev;
373 
374         /* sync time on device with host: */
375         ticks = (int)get_seconds();
376         line6_write_data(line6, 0x80c6, &ticks, 4);
377 
378         /* enable device: */
379         toneport_send_cmd(usbdev, 0x0301, 0x0000);
380 
381         /* initialize source select: */
382         if (toneport_has_source_select(toneport))
383                 toneport_send_cmd(usbdev,
384                                   toneport_source_info[toneport->source].code,
385                                   0x0000);
386 
387         if (toneport_has_led(toneport))
388                 toneport_update_led(toneport);
389 
390         mod_timer(&toneport->timer, jiffies + TONEPORT_PCM_DELAY * HZ);
391 }
392 
393 /*
394         Toneport device disconnected.
395 */
396 static void line6_toneport_disconnect(struct usb_line6 *line6)
397 {
398         struct usb_line6_toneport *toneport =
399                 (struct usb_line6_toneport *)line6;
400 
401         del_timer_sync(&toneport->timer);
402 
403         if (toneport_has_led(toneport))
404                 toneport_remove_leds(toneport);
405 }
406 
407 
408 /*
409          Try to init Toneport device.
410 */
411 static int toneport_init(struct usb_line6 *line6,
412                          const struct usb_device_id *id)
413 {
414         int err;
415         struct usb_line6_toneport *toneport =  (struct usb_line6_toneport *) line6;
416 
417         toneport->type = id->driver_info;
418         timer_setup(&toneport->timer, toneport_start_pcm, 0);
419 
420         line6->disconnect = line6_toneport_disconnect;
421 
422         /* initialize PCM subsystem: */
423         err = line6_init_pcm(line6, &toneport_pcm_properties);
424         if (err < 0)
425                 return err;
426 
427         /* register monitor control: */
428         err = snd_ctl_add(line6->card,
429                           snd_ctl_new1(&toneport_control_monitor,
430                                        line6->line6pcm));
431         if (err < 0)
432                 return err;
433 
434         /* register source select control: */
435         if (toneport_has_source_select(toneport)) {
436                 err =
437                     snd_ctl_add(line6->card,
438                                 snd_ctl_new1(&toneport_control_source,
439                                              line6->line6pcm));
440                 if (err < 0)
441                         return err;
442         }
443 
444         line6_read_serial_number(line6, &toneport->serial_number);
445         line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);
446 
447         if (toneport_has_led(toneport)) {
448                 err = toneport_init_leds(toneport);
449                 if (err < 0)
450                         return err;
451         }
452 
453         toneport_setup(toneport);
454 
455         /* register audio system: */
456         return snd_card_register(line6->card);
457 }
458 
459 #ifdef CONFIG_PM
460 /*
461         Resume Toneport device after reset.
462 */
463 static int toneport_reset_resume(struct usb_interface *interface)
464 {
465         toneport_setup(usb_get_intfdata(interface));
466         return line6_resume(interface);
467 }
468 #endif
469 
470 #define LINE6_DEVICE(prod) USB_DEVICE(0x0e41, prod)
471 #define LINE6_IF_NUM(prod, n) USB_DEVICE_INTERFACE_NUMBER(0x0e41, prod, n)
472 
473 /* table of devices that work with this driver */
474 static const struct usb_device_id toneport_id_table[] = {
475         { LINE6_DEVICE(0x4750),    .driver_info = LINE6_GUITARPORT },
476         { LINE6_DEVICE(0x4153),    .driver_info = LINE6_PODSTUDIO_GX },
477         { LINE6_DEVICE(0x4150),    .driver_info = LINE6_PODSTUDIO_UX1 },
478         { LINE6_IF_NUM(0x4151, 0), .driver_info = LINE6_PODSTUDIO_UX2 },
479         { LINE6_DEVICE(0x4147),    .driver_info = LINE6_TONEPORT_GX },
480         { LINE6_DEVICE(0x4141),    .driver_info = LINE6_TONEPORT_UX1 },
481         { LINE6_IF_NUM(0x4142, 0), .driver_info = LINE6_TONEPORT_UX2 },
482         {}
483 };
484 
485 MODULE_DEVICE_TABLE(usb, toneport_id_table);
486 
487 static const struct line6_properties toneport_properties_table[] = {
488         [LINE6_GUITARPORT] = {
489                 .id = "GuitarPort",
490                 .name = "GuitarPort",
491                 .capabilities   = LINE6_CAP_PCM,
492                 .altsetting = 2,  /* 1..4 seem to be ok */
493                 /* no control channel */
494                 .ep_audio_r = 0x82,
495                 .ep_audio_w = 0x01,
496         },
497         [LINE6_PODSTUDIO_GX] = {
498                 .id = "PODStudioGX",
499                 .name = "POD Studio GX",
500                 .capabilities   = LINE6_CAP_PCM,
501                 .altsetting = 2,  /* 1..4 seem to be ok */
502                 /* no control channel */
503                 .ep_audio_r = 0x82,
504                 .ep_audio_w = 0x01,
505         },
506         [LINE6_PODSTUDIO_UX1] = {
507                 .id = "PODStudioUX1",
508                 .name = "POD Studio UX1",
509                 .capabilities   = LINE6_CAP_PCM,
510                 .altsetting = 2,  /* 1..4 seem to be ok */
511                 /* no control channel */
512                 .ep_audio_r = 0x82,
513                 .ep_audio_w = 0x01,
514         },
515         [LINE6_PODSTUDIO_UX2] = {
516                 .id = "PODStudioUX2",
517                 .name = "POD Studio UX2",
518                 .capabilities   = LINE6_CAP_PCM,
519                 .altsetting = 2,  /* defaults to 44.1kHz, 16-bit */
520                 /* no control channel */
521                 .ep_audio_r = 0x82,
522                 .ep_audio_w = 0x01,
523         },
524         [LINE6_TONEPORT_GX] = {
525                 .id = "TonePortGX",
526                 .name = "TonePort GX",
527                 .capabilities   = LINE6_CAP_PCM,
528                 .altsetting = 2,  /* 1..4 seem to be ok */
529                 /* no control channel */
530                 .ep_audio_r = 0x82,
531                 .ep_audio_w = 0x01,
532         },
533         [LINE6_TONEPORT_UX1] = {
534                 .id = "TonePortUX1",
535                 .name = "TonePort UX1",
536                 .capabilities   = LINE6_CAP_PCM,
537                 .altsetting = 2,  /* 1..4 seem to be ok */
538                 /* no control channel */
539                 .ep_audio_r = 0x82,
540                 .ep_audio_w = 0x01,
541         },
542         [LINE6_TONEPORT_UX2] = {
543                 .id = "TonePortUX2",
544                 .name = "TonePort UX2",
545                 .capabilities   = LINE6_CAP_PCM,
546                 .altsetting = 2,  /* defaults to 44.1kHz, 16-bit */
547                 /* no control channel */
548                 .ep_audio_r = 0x82,
549                 .ep_audio_w = 0x01,
550         },
551 };
552 
553 /*
554         Probe USB device.
555 */
556 static int toneport_probe(struct usb_interface *interface,
557                           const struct usb_device_id *id)
558 {
559         return line6_probe(interface, id, "Line6-TonePort",
560                            &toneport_properties_table[id->driver_info],
561                            toneport_init, sizeof(struct usb_line6_toneport));
562 }
563 
564 static struct usb_driver toneport_driver = {
565         .name = KBUILD_MODNAME,
566         .probe = toneport_probe,
567         .disconnect = line6_disconnect,
568 #ifdef CONFIG_PM
569         .suspend = line6_suspend,
570         .resume = line6_resume,
571         .reset_resume = toneport_reset_resume,
572 #endif
573         .id_table = toneport_id_table,
574 };
575 
576 module_usb_driver(toneport_driver);
577 
578 MODULE_DESCRIPTION("TonePort USB driver");
579 MODULE_LICENSE("GPL");
580 

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