release/src-rt-6.x.4708/linux/linux-2.6.36/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 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2);
  21
  22 static struct snd_ratden toneport_ratden = {
  23         .num_min = 44100,
  24         .num_max = 44100,
  25         .num_step = 1,
  26         .den = 1
  27 };
  28
  29 static struct line6_pcm_properties toneport_pcm_properties = {
  30         .snd_line6_playback_hw = {
  31                                   .info = (SNDRV_PCM_INFO_MMAP |
  32                                            SNDRV_PCM_INFO_INTERLEAVED |
  33                                            SNDRV_PCM_INFO_BLOCK_TRANSFER |
  34                                            SNDRV_PCM_INFO_MMAP_VALID |
  35                                            SNDRV_PCM_INFO_PAUSE |
  36                                            SNDRV_PCM_INFO_SYNC_START),
  37                                   .formats = SNDRV_PCM_FMTBIT_S16_LE,
  38                                   .rates = SNDRV_PCM_RATE_KNOT,
  39                                   .rate_min = 44100,
  40                                   .rate_max = 44100,
  41                                   .channels_min = 2,
  42                                   .channels_max = 2,
  43                                   .buffer_bytes_max = 60000,
  44                                   .period_bytes_min = 180 * 4,
  45                                   .period_bytes_max = 8192,
  46                                   .periods_min = 1,
  47                                   .periods_max = 1024},
  48         .snd_line6_capture_hw = {
  49                                  .info = (SNDRV_PCM_INFO_MMAP |
  50                                           SNDRV_PCM_INFO_INTERLEAVED |
  51                                           SNDRV_PCM_INFO_BLOCK_TRANSFER |
  52                                           SNDRV_PCM_INFO_MMAP_VALID |
  53                                           SNDRV_PCM_INFO_SYNC_START),
  54                                  .formats = SNDRV_PCM_FMTBIT_S16_LE,
  55                                  .rates = SNDRV_PCM_RATE_KNOT,
  56                                  .rate_min = 44100,
  57                                  .rate_max = 44100,
  58                                  .channels_min = 2,
  59                                  .channels_max = 2,
  60                                  .buffer_bytes_max = 60000,
  61                                  .period_bytes_min = 188 * 4,
  62                                  .period_bytes_max = 8192,
  63                                  .periods_min = 1,
  64                                  .periods_max = 1024},
  65         .snd_line6_rates = {
  66                             .nrats = 1,
  67                             .rats = &toneport_ratden},
  68         .bytes_per_frame = 4
  69 };
  70
  71 /*
  72         For the led on Guitarport.
  73         Brightness goes from 0x00 to 0x26. Set a value above this to have led
  74         blink.
  75         (void cmd_0x02(byte red, byte green)
  76 */
  77 static int led_red = 0x00;
  78 static int led_green = 0x26;
  79
  80 static void toneport_update_led(struct device *dev)
  81 {
  82         struct usb_interface *interface = to_usb_interface(dev);
  83         struct usb_line6_toneport *tp = usb_get_intfdata(interface);
  84         struct usb_line6 *line6;
  85
  86         if (!tp)
  87                 return;
  88
  89         line6 = &tp->line6;
  90         if (line6)
  91                 toneport_send_cmd(line6->usbdev, (led_red << 8) | 0x0002,
  92                                   led_green);
  93 }
  94
  95 static ssize_t toneport_set_led_red(struct device *dev,
  96                                     struct device_attribute *attr,
  97                                     const char *buf, size_t count)
  98 {
  99         int retval;
 100         long value;
 101
 102         retval = strict_strtol(buf, 10, &value);
 103         if (retval)
 104                 return retval;
 105
 106         led_red = value;
 107         toneport_update_led(dev);
 108         return count;
 109 }
 110
 111 static ssize_t toneport_set_led_green(struct device *dev,
 112                                       struct device_attribute *attr,
 113                                       const char *buf, size_t count)
 114 {
 115         int retval;
 116         long value;
 117
 118         retval = strict_strtol(buf, 10, &value);
 119         if (retval)
 120                 return retval;
 121
 122         led_green = value;
 123         toneport_update_led(dev);
 124         return count;
 125 }
 126
 127 static DEVICE_ATTR(led_red, S_IWUSR | S_IRUGO, line6_nop_read,
 128                    toneport_set_led_red);
 129 static DEVICE_ATTR(led_green, S_IWUSR | S_IRUGO, line6_nop_read,
 130                    toneport_set_led_green);
 131
 132 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
 133 {
 134         int ret;
 135
 136         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), 0x67,
 137                               USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 138                               cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);
 139
 140         if (ret < 0) {
 141                 err("send failed (error %d)\n", ret);
 142                 return ret;
 143         }
 144
 145         return 0;
 146 }
 147
 148 /*
 149         Toneport destructor.
 150 */
 151 static void toneport_destruct(struct usb_interface *interface)
 152 {
 153         struct usb_line6_toneport *toneport = usb_get_intfdata(interface);
 154         struct usb_line6 *line6;
 155
 156         if (toneport == NULL)
 157                 return;
 158         line6 = &toneport->line6;
 159         if (line6 == NULL)
 160                 return;
 161         line6_cleanup_audio(line6);
 162 }
 163
 164 /*
 165          Init Toneport device.
 166 */
 167 int toneport_init(struct usb_interface *interface,
 168                   struct usb_line6_toneport *toneport)
 169 {
 170         int err, ticks;
 171         struct usb_line6 *line6 = &toneport->line6;
 172         struct usb_device *usbdev;
 173
 174         if ((interface == NULL) || (toneport == NULL))
 175                 return -ENODEV;
 176
 177         /* initialize audio system: */
 178         err = line6_init_audio(line6);
 179         if (err < 0) {
 180                 toneport_destruct(interface);
 181                 return err;
 182         }
 183
 184         /* initialize PCM subsystem: */
 185         err = line6_init_pcm(line6, &toneport_pcm_properties);
 186         if (err < 0) {
 187                 toneport_destruct(interface);
 188                 return err;
 189         }
 190
 191         /* register audio system: */
 192         err = line6_register_audio(line6);
 193         if (err < 0) {
 194                 toneport_destruct(interface);
 195                 return err;
 196         }
 197
 198         usbdev = line6->usbdev;
 199         line6_read_serial_number(line6, &toneport->serial_number);
 200         line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);
 201
 202         /* sync time on device with host: */
 203         ticks = (int)get_seconds();
 204         line6_write_data(line6, 0x80c6, &ticks, 4);
 205
 206         /*
 207            seems to work without the first two...
 208          */
 209         /* toneport_send_cmd(usbdev, 0x0201, 0x0002); */
 210         /* toneport_send_cmd(usbdev, 0x0801, 0x0000); */
 211         /* only one that works for me; on GP, TP might be different? */
 212         toneport_send_cmd(usbdev, 0x0301, 0x0000);
 213
 214         if (usbdev->descriptor.idProduct != LINE6_DEVID_GUITARPORT) {
 215                 CHECK_RETURN(device_create_file
 216                              (&interface->dev, &dev_attr_led_red));
 217                 CHECK_RETURN(device_create_file
 218                              (&interface->dev, &dev_attr_led_green));
 219                 toneport_update_led(&usbdev->dev);
 220         }
 221
 222         return 0;
 223 }
 224
 225 /*
 226         Toneport device disconnected.
 227 */
 228 void toneport_disconnect(struct usb_interface *interface)
 229 {
 230         struct usb_line6_toneport *toneport;
 231
 232         if (interface == NULL)
 233                 return;
 234         toneport = usb_get_intfdata(interface);
 235
 236         if (toneport->line6.usbdev->descriptor.idProduct !=
 237             LINE6_DEVID_GUITARPORT) {
 238                 device_remove_file(&interface->dev, &dev_attr_led_red);
 239                 device_remove_file(&interface->dev, &dev_attr_led_green);
 240         }
 241
 242         if (toneport != NULL) {
 243                 struct snd_line6_pcm *line6pcm = toneport->line6.line6pcm;
 244
 245                 if (line6pcm != NULL) {
 246                         unlink_wait_clear_audio_out_urbs(line6pcm);
 247                         unlink_wait_clear_audio_in_urbs(line6pcm);
 248                 }
 249         }
 250
 251         toneport_destruct(interface);
 252 }