drivers/staging/line6/toneport.c

   1 /*
   2  * Line6 Linux USB driver - 0.8.0
   3  *
   4  * Copyright (C) 2004-2009 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 "driver.h"
  14
  15 #include "audio.h"
  16 #include "capture.h"
  17 #include "playback.h"
  18 #include "toneport.h"
  19
  20
  21 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);
  22
  23
  24 static struct snd_ratden toneport_ratden = {
  25         .num_min = 44100,
  26         .num_max = 44100,
  27         .num_step = 1,
  28         .den = 1
  29 };
  30
  31 static struct line6_pcm_properties toneport_pcm_properties = {
  32   .snd_line6_playback_hw = {
  33                 .info = (SNDRV_PCM_INFO_MMAP |
  34                                                  SNDRV_PCM_INFO_INTERLEAVED |
  35                                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
  36                                                  SNDRV_PCM_INFO_MMAP_VALID |
  37                                                  SNDRV_PCM_INFO_PAUSE |
  38                                                  SNDRV_PCM_INFO_SYNC_START),
  39                 .formats =          SNDRV_PCM_FMTBIT_S16_LE,
  40                 .rates =            SNDRV_PCM_RATE_KNOT,
  41                 .rate_min =         44100,
  42                 .rate_max =         44100,
  43                 .channels_min =     2,
  44                 .channels_max =     2,
  45                 .buffer_bytes_max = 60000,
  46                 .period_bytes_min = 180 * 4,
  47                 .period_bytes_max = 8192,
  48                 .periods_min =      1,
  49                 .periods_max =      1024
  50         },
  51   .snd_line6_capture_hw = {
  52                 .info = (SNDRV_PCM_INFO_MMAP |
  53                                                  SNDRV_PCM_INFO_INTERLEAVED |
  54                                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
  55                                                  SNDRV_PCM_INFO_MMAP_VALID |
  56                                                  SNDRV_PCM_INFO_SYNC_START),
  57                 .formats =          SNDRV_PCM_FMTBIT_S16_LE,
  58                 .rates =            SNDRV_PCM_RATE_KNOT,
  59                 .rate_min =         44100,
  60                 .rate_max =         44100,
  61                 .channels_min =     2,
  62                 .channels_max =     2,
  63                 .buffer_bytes_max = 60000,
  64                 .period_bytes_min = 188 * 4,
  65                 .period_bytes_max = 8192,
  66                 .periods_min =      1,
  67                 .periods_max =      1024
  68         },
  69         .snd_line6_rates = {
  70                 .nrats = 1,
  71                 .rats = &toneport_ratden
  72         },
  73         .bytes_per_frame = 4
  74 };
  75
  76 /*
  77         For the led on Guitarport.
  78         Brightness goes from 0x00 to 0x26. Set a value above this to have led
  79         blink.
  80         (void cmd_0x02(byte red, byte green)
  81 */
  82 static int led_red = 0x00;
  83 static int led_green = 0x26;
  84
  85 static void toneport_update_led(struct device *dev)
  86 {
  87         struct usb_interface *interface = to_usb_interface(dev);
  88         struct usb_line6_toneport *tp = usb_get_intfdata(interface);
  89         struct usb_line6 *line6;
  90
  91         if (!tp)
  92                 return;
  93
  94         line6 = &tp->line6;
  95         if (line6)
  96                 toneport_send_cmd(line6->usbdev, (led_red << 8) | 0x0002,
  97                                   led_green);
  98 }
  99
 100 static ssize_t toneport_set_led_red(struct device *dev,
 101                                     struct device_attribute *attr,
 102                                     const char *buf, size_t count)
 103 {
 104         char *c;
 105         led_red = simple_strtol(buf, &c, 10);
 106         toneport_update_led(dev);
 107         return count;
 108 }
 109
 110 static ssize_t toneport_set_led_green(struct device *dev,
 111                                       struct device_attribute *attr,
 112                                       const char *buf, size_t count)
 113 {
 114         char *c;
 115         led_green = simple_strtol(buf, &c, 10);
 116         toneport_update_led(dev);
 117         return count;
 118 }
 119
 120 static DEVICE_ATTR(led_red, S_IWUGO | S_IRUGO, line6_nop_read, toneport_set_led_red);
 121 static DEVICE_ATTR(led_green, S_IWUGO | S_IRUGO, line6_nop_read, toneport_set_led_green);
 122
 123
 124 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
 125 {
 126         int ret;
 127
 128         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
 129                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 130                               cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);
 131
 132         if (ret < 0) {
 133                 err("send failed (error %d)\n", ret);
 134                 return ret;
 135         }
 136
 137         return 0;
 138 }
 139
 140 /*
 141         Toneport destructor.
 142 */
 143 static void toneport_destruct(struct usb_interface *interface)
 144 {
 145         struct usb_line6_toneport *toneport = usb_get_intfdata(interface);
 146         struct usb_line6 *line6;
 147
 148         if (toneport == NULL)
 149                 return;
 150         line6 = &toneport->line6;
 151         if (line6 == NULL)
 152                 return;
 153         line6_cleanup_audio(line6);
 154 }
 155
 156 /*
 157          Init Toneport device.
 158 */
 159 int toneport_init(struct usb_interface *interface,
 160                   struct usb_line6_toneport *toneport)
 161 {
 162         int err, ticks;
 163         struct usb_line6 *line6 = &toneport->line6;
 164         struct usb_device *usbdev;
 165
 166         if ((interface == NULL) || (toneport == NULL))
 167                 return -ENODEV;
 168
 169         /* initialize audio system: */
 170         err = line6_init_audio(line6);
 171         if (err < 0) {
 172                 toneport_destruct(interface);
 173                 return err;
 174         }
 175
 176         /* initialize PCM subsystem: */
 177         err = line6_init_pcm(line6, &toneport_pcm_properties);
 178         if (err < 0) {
 179                 toneport_destruct(interface);
 180                 return err;
 181         }
 182
 183         /* register audio system: */
 184         err = line6_register_audio(line6);
 185         if (err < 0) {
 186                 toneport_destruct(interface);
 187                 return err;
 188         }
 189
 190         usbdev = line6->usbdev;
 191         line6_read_serial_number(line6, &toneport->serial_number);
 192         line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);
 193
 194         /* sync time on device with host: */
 195         ticks = (int)get_seconds();
 196         line6_write_data(line6, 0x80c6, &ticks, 4);
 197
 198         /*
 199         seems to work without the first two...
 200         */
 201         /* toneport_send_cmd(usbdev, 0x0201, 0x0002); */
 202         /* toneport_send_cmd(usbdev, 0x0801, 0x0000); */
 203         /* only one that works for me; on GP, TP might be different? */
 204         toneport_send_cmd(usbdev, 0x0301, 0x0000);
 205
 206         if (usbdev->descriptor.idProduct != LINE6_DEVID_GUITARPORT) {
 207                 CHECK_RETURN(device_create_file(&interface->dev, &dev_attr_led_red));
 208                 CHECK_RETURN(device_create_file(&interface->dev, &dev_attr_led_green));
 209                 toneport_update_led(&usbdev->dev);
 210         }
 211
 212         return 0;
 213 }
 214
 215 /*
 216         Toneport device disconnected.
 217 */
 218 void toneport_disconnect(struct usb_interface *interface)
 219 {
 220         struct usb_line6_toneport *toneport;
 221
 222         if (interface == NULL)
 223                 return;
 224         toneport = usb_get_intfdata(interface);
 225
 226         if (toneport->line6.usbdev->descriptor.idProduct != LINE6_DEVID_GUITARPORT) {
 227                 device_remove_file(&interface->dev, &dev_attr_led_red);
 228                 device_remove_file(&interface->dev, &dev_attr_led_green);
 229         }
 230
 231         if (toneport != NULL) {
 232                 struct snd_line6_pcm *line6pcm = toneport->line6.line6pcm;
 233
 234                 if (line6pcm != NULL) {
 235                         unlink_wait_clear_audio_out_urbs(line6pcm);
 236                         unlink_wait_clear_audio_in_urbs(line6pcm);
 237                 }
 238         }
 239
 240         toneport_destruct(interface);
 241 }