linux/drivers/staging/line6/toneport.c
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   1/*
   2 * Line6 Linux USB driver - 0.9.1beta
   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 <sound/control.h>
  15
  16#include "audio.h"
  17#include "capture.h"
  18#include "driver.h"
  19#include "playback.h"
  20#include "toneport.h"
  21
  22static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);
  23
  24#define TONEPORT_PCM_DELAY 1
  25
  26static struct snd_ratden toneport_ratden = {
  27        .num_min = 44100,
  28        .num_max = 44100,
  29        .num_step = 1,
  30        .den = 1
  31};
  32
  33static struct line6_pcm_properties toneport_pcm_properties = {
  34        .snd_line6_playback_hw = {
  35                                  .info = (SNDRV_PCM_INFO_MMAP |
  36                                           SNDRV_PCM_INFO_INTERLEAVED |
  37                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
  38                                           SNDRV_PCM_INFO_MMAP_VALID |
  39                                           SNDRV_PCM_INFO_PAUSE |
  40#ifdef CONFIG_PM
  41                                           SNDRV_PCM_INFO_RESUME |
  42#endif
  43                                           SNDRV_PCM_INFO_SYNC_START),
  44                                  .formats = SNDRV_PCM_FMTBIT_S16_LE,
  45                                  .rates = SNDRV_PCM_RATE_KNOT,
  46                                  .rate_min = 44100,
  47                                  .rate_max = 44100,
  48                                  .channels_min = 2,
  49                                  .channels_max = 2,
  50                                  .buffer_bytes_max = 60000,
  51                                  .period_bytes_min = 64,
  52                                  .period_bytes_max = 8192,
  53                                  .periods_min = 1,
  54                                  .periods_max = 1024},
  55        .snd_line6_capture_hw = {
  56                                 .info = (SNDRV_PCM_INFO_MMAP |
  57                                          SNDRV_PCM_INFO_INTERLEAVED |
  58                                          SNDRV_PCM_INFO_BLOCK_TRANSFER |
  59                                          SNDRV_PCM_INFO_MMAP_VALID |
  60#ifdef CONFIG_PM
  61                                          SNDRV_PCM_INFO_RESUME |
  62#endif
  63                                          SNDRV_PCM_INFO_SYNC_START),
  64                                 .formats = SNDRV_PCM_FMTBIT_S16_LE,
  65                                 .rates = SNDRV_PCM_RATE_KNOT,
  66                                 .rate_min = 44100,
  67                                 .rate_max = 44100,
  68                                 .channels_min = 2,
  69                                 .channels_max = 2,
  70                                 .buffer_bytes_max = 60000,
  71                                 .period_bytes_min = 64,
  72                                 .period_bytes_max = 8192,
  73                                 .periods_min = 1,
  74                                 .periods_max = 1024},
  75        .snd_line6_rates = {
  76                            .nrats = 1,
  77                            .rats = &toneport_ratden},
  78        .bytes_per_frame = 4
  79};
  80
  81/*
  82        For the led on Guitarport.
  83        Brightness goes from 0x00 to 0x26. Set a value above this to have led
  84        blink.
  85        (void cmd_0x02(byte red, byte green)
  86*/
  87static int led_red = 0x00;
  88static int led_green = 0x26;
  89
  90struct ToneportSourceInfo {
  91        const char *name;
  92        int code;
  93};
  94
  95static const struct ToneportSourceInfo toneport_source_info[] = {
  96        {"Microphone", 0x0a01},
  97        {"Line", 0x0801},
  98        {"Instrument", 0x0b01},
  99        {"Inst & Mic", 0x0901}
 100};
 101
 102static bool toneport_has_led(short product)
 103{
 104        return
 105            (product == LINE6_DEVID_GUITARPORT) ||
 106            (product == LINE6_DEVID_TONEPORT_GX);
 107        /* add your device here if you are missing support for the LEDs */
 108}
 109
 110static void toneport_update_led(struct device *dev)
 111{
 112        struct usb_interface *interface = to_usb_interface(dev);
 113        struct usb_line6_toneport *tp = usb_get_intfdata(interface);
 114        struct usb_line6 *line6;
 115
 116        if (!tp)
 117                return;
 118
 119        line6 = &tp->line6;
 120        if (line6)
 121                toneport_send_cmd(line6->usbdev, (led_red << 8) | 0x0002,
 122                                  led_green);
 123}
 124
 125static ssize_t toneport_set_led_red(struct device *dev,
 126                                    struct device_attribute *attr,
 127                                    const char *buf, size_t count)
 128{
 129        int retval;
 130        long value;
 131
 132        retval = strict_strtol(buf, 10, &value);
 133        if (retval)
 134                return retval;
 135
 136        led_red = value;
 137        toneport_update_led(dev);
 138        return count;
 139}
 140
 141static ssize_t toneport_set_led_green(struct device *dev,
 142                                      struct device_attribute *attr,
 143                                      const char *buf, size_t count)
 144{
 145        int retval;
 146        long value;
 147
 148        retval = strict_strtol(buf, 10, &value);
 149        if (retval)
 150                return retval;
 151
 152        led_green = value;
 153        toneport_update_led(dev);
 154        return count;
 155}
 156
 157static DEVICE_ATTR(led_red, S_IWUSR | S_IRUGO, line6_nop_read,
 158                   toneport_set_led_red);
 159static DEVICE_ATTR(led_green, S_IWUSR | S_IRUGO, line6_nop_read,
 160                   toneport_set_led_green);
 161
 162static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
 163{
 164        int ret;
 165
 166        ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
 167                              USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 168                              cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);
 169
 170        if (ret < 0) {
 171                err("send failed (error %d)\n", ret);
 172                return ret;
 173        }
 174
 175        return 0;
 176}
 177
 178/* monitor info callback */
 179static int snd_toneport_monitor_info(struct snd_kcontrol *kcontrol,
 180                                     struct snd_ctl_elem_info *uinfo)
 181{
 182        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 183        uinfo->count = 1;
 184        uinfo->value.integer.min = 0;
 185        uinfo->value.integer.max = 256;
 186        return 0;
 187}
 188
 189/* monitor get callback */
 190static int snd_toneport_monitor_get(struct snd_kcontrol *kcontrol,
 191                                    struct snd_ctl_elem_value *ucontrol)
 192{
 193        struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 194        ucontrol->value.integer.value[0] = line6pcm->volume_monitor;
 195        return 0;
 196}
 197
 198/* monitor put callback */
 199static int snd_toneport_monitor_put(struct snd_kcontrol *kcontrol,
 200                                    struct snd_ctl_elem_value *ucontrol)
 201{
 202        struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 203
 204        if (ucontrol->value.integer.value[0] == line6pcm->volume_monitor)
 205                return 0;
 206
 207        line6pcm->volume_monitor = ucontrol->value.integer.value[0];
 208
 209        if (line6pcm->volume_monitor > 0)
 210                line6_pcm_start(line6pcm, MASK_PCM_MONITOR);
 211        else
 212                line6_pcm_stop(line6pcm, MASK_PCM_MONITOR);
 213
 214        return 1;
 215}
 216
 217/* source info callback */
 218static int snd_toneport_source_info(struct snd_kcontrol *kcontrol,
 219                                    struct snd_ctl_elem_info *uinfo)
 220{
 221        const int size = ARRAY_SIZE(toneport_source_info);
 222        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 223        uinfo->count = 1;
 224        uinfo->value.enumerated.items = size;
 225
 226        if (uinfo->value.enumerated.item >= size)
 227                uinfo->value.enumerated.item = size - 1;
 228
 229        strcpy(uinfo->value.enumerated.name,
 230               toneport_source_info[uinfo->value.enumerated.item].name);
 231
 232        return 0;
 233}
 234
 235/* source get callback */
 236static int snd_toneport_source_get(struct snd_kcontrol *kcontrol,
 237                                   struct snd_ctl_elem_value *ucontrol)
 238{
 239        struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 240        struct usb_line6_toneport *toneport =
 241            (struct usb_line6_toneport *)line6pcm->line6;
 242        ucontrol->value.enumerated.item[0] = toneport->source;
 243        return 0;
 244}
 245
 246/* source put callback */
 247static int snd_toneport_source_put(struct snd_kcontrol *kcontrol,
 248                                   struct snd_ctl_elem_value *ucontrol)
 249{
 250        struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol);
 251        struct usb_line6_toneport *toneport =
 252            (struct usb_line6_toneport *)line6pcm->line6;
 253
 254        if (ucontrol->value.enumerated.item[0] == toneport->source)
 255                return 0;
 256
 257        toneport->source = ucontrol->value.enumerated.item[0];
 258        toneport_send_cmd(toneport->line6.usbdev,
 259                          toneport_source_info[toneport->source].code, 0x0000);
 260        return 1;
 261}
 262
 263static void toneport_start_pcm(unsigned long arg)
 264{
 265        struct usb_line6_toneport *toneport = (struct usb_line6_toneport *)arg;
 266        struct usb_line6 *line6 = &toneport->line6;
 267        line6_pcm_start(line6->line6pcm, MASK_PCM_MONITOR);
 268}
 269
 270/* control definition */
 271static struct snd_kcontrol_new toneport_control_monitor = {
 272        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 273        .name = "Monitor Playback Volume",
 274        .index = 0,
 275        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 276        .info = snd_toneport_monitor_info,
 277        .get = snd_toneport_monitor_get,
 278        .put = snd_toneport_monitor_put
 279};
 280
 281/* source selector definition */
 282static struct snd_kcontrol_new toneport_control_source = {
 283        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 284        .name = "PCM Capture Source",
 285        .index = 0,
 286        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 287        .info = snd_toneport_source_info,
 288        .get = snd_toneport_source_get,
 289        .put = snd_toneport_source_put
 290};
 291
 292/*
 293        Toneport destructor.
 294*/
 295static void toneport_destruct(struct usb_interface *interface)
 296{
 297        struct usb_line6_toneport *toneport = usb_get_intfdata(interface);
 298        struct usb_line6 *line6;
 299
 300        if (toneport == NULL)
 301                return;
 302        line6 = &toneport->line6;
 303        if (line6 == NULL)
 304                return;
 305        line6_cleanup_audio(line6);
 306}
 307
 308/*
 309        Setup Toneport device.
 310*/
 311static void toneport_setup(struct usb_line6_toneport *toneport)
 312{
 313        int ticks;
 314        struct usb_line6 *line6 = &toneport->line6;
 315        struct usb_device *usbdev = line6->usbdev;
 316
 317        /* sync time on device with host: */
 318        ticks = (int)get_seconds();
 319        line6_write_data(line6, 0x80c6, &ticks, 4);
 320
 321        /* enable device: */
 322        toneport_send_cmd(usbdev, 0x0301, 0x0000);
 323
 324        /* initialize source select: */
 325        switch (usbdev->descriptor.idProduct) {
 326        case LINE6_DEVID_TONEPORT_UX1:
 327        case LINE6_DEVID_PODSTUDIO_UX1:
 328                toneport_send_cmd(usbdev,
 329                                  toneport_source_info[toneport->source].code,
 330                                  0x0000);
 331        }
 332
 333        if (toneport_has_led(usbdev->descriptor.idProduct))
 334                toneport_update_led(&usbdev->dev);
 335}
 336
 337/*
 338         Try to init Toneport device.
 339*/
 340static int toneport_try_init(struct usb_interface *interface,
 341                             struct usb_line6_toneport *toneport)
 342{
 343        int err;
 344        struct usb_line6 *line6 = &toneport->line6;
 345        struct usb_device *usbdev = line6->usbdev;
 346
 347        if ((interface == NULL) || (toneport == NULL))
 348                return -ENODEV;
 349
 350        /* initialize audio system: */
 351        err = line6_init_audio(line6);
 352        if (err < 0)
 353                return err;
 354
 355        /* initialize PCM subsystem: */
 356        err = line6_init_pcm(line6, &toneport_pcm_properties);
 357        if (err < 0)
 358                return err;
 359
 360        /* register monitor control: */
 361        err = snd_ctl_add(line6->card,
 362                          snd_ctl_new1(&toneport_control_monitor,
 363                                       line6->line6pcm));
 364        if (err < 0)
 365                return err;
 366
 367        /* register source select control: */
 368        switch (usbdev->descriptor.idProduct) {
 369        case LINE6_DEVID_TONEPORT_UX1:
 370        case LINE6_DEVID_PODSTUDIO_UX1:
 371                err =
 372                    snd_ctl_add(line6->card,
 373                                snd_ctl_new1(&toneport_control_source,
 374                                             line6->line6pcm));
 375                if (err < 0)
 376                        return err;
 377        }
 378
 379        /* register audio system: */
 380        err = line6_register_audio(line6);
 381        if (err < 0)
 382                return err;
 383
 384        line6_read_serial_number(line6, &toneport->serial_number);
 385        line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);
 386
 387        if (toneport_has_led(usbdev->descriptor.idProduct)) {
 388                CHECK_RETURN(device_create_file
 389                             (&interface->dev, &dev_attr_led_red));
 390                CHECK_RETURN(device_create_file
 391                             (&interface->dev, &dev_attr_led_green));
 392        }
 393
 394        toneport_setup(toneport);
 395
 396        init_timer(&toneport->timer);
 397        toneport->timer.expires = jiffies + TONEPORT_PCM_DELAY * HZ;
 398        toneport->timer.function = toneport_start_pcm;
 399        toneport->timer.data = (unsigned long)toneport;
 400        add_timer(&toneport->timer);
 401
 402        return 0;
 403}
 404
 405/*
 406         Init Toneport device (and clean up in case of failure).
 407*/
 408int line6_toneport_init(struct usb_interface *interface,
 409                        struct usb_line6_toneport *toneport)
 410{
 411        int err = toneport_try_init(interface, toneport);
 412
 413        if (err < 0)
 414                toneport_destruct(interface);
 415
 416        return err;
 417}
 418
 419/*
 420        Resume Toneport device after reset.
 421*/
 422void line6_toneport_reset_resume(struct usb_line6_toneport *toneport)
 423{
 424        toneport_setup(toneport);
 425}
 426
 427/*
 428        Toneport device disconnected.
 429*/
 430void line6_toneport_disconnect(struct usb_interface *interface)
 431{
 432        struct usb_line6_toneport *toneport;
 433
 434        if (interface == NULL)
 435                return;
 436
 437        toneport = usb_get_intfdata(interface);
 438        del_timer_sync(&toneport->timer);
 439
 440        if (toneport_has_led(toneport->line6.usbdev->descriptor.idProduct)) {
 441                device_remove_file(&interface->dev, &dev_attr_led_red);
 442                device_remove_file(&interface->dev, &dev_attr_led_green);
 443        }
 444
 445        if (toneport != NULL) {
 446                struct snd_line6_pcm *line6pcm = toneport->line6.line6pcm;
 447
 448                if (line6pcm != NULL) {
 449                        line6_pcm_stop(line6pcm, MASK_PCM_MONITOR);
 450                        line6_pcm_disconnect(line6pcm);
 451                }
 452        }
 453
 454        toneport_destruct(interface);
 455}
 456