git.oblomov.eu Git - linux-2.6/blob - 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 blink.
  79         (void cmd_0x02(byte red, byte green)
  80 */
  81 static int led_red = 0x00;
  82 static int led_green = 0x26;
  83
  84 static void toneport_update_led(struct device *dev)  {
  85         struct usb_interface *interface;
  86         struct usb_line6_toneport *tp;
  87         struct usb_line6* line6;
  88
  89         if ((interface = to_usb_interface(dev)) &&
  90                 (tp = usb_get_intfdata(interface)) &&
  91                 (line6 = &tp->line6))
  92                         toneport_send_cmd(line6->usbdev, (led_red<<8)|0x0002, led_green);       // for setting the LED on Guitarport
  93 }
  94 static ssize_t toneport_set_led_red(struct device *dev,
  95                                     struct device_attribute *attr,
  96                                     const char *buf, size_t count)  {
  97         char* c;
  98         led_red = simple_strtol(buf, &c, 10);
  99         toneport_update_led(dev);
 100         return count;
 101 }
 102 static ssize_t toneport_set_led_green(struct device *dev,
 103                                       struct device_attribute *attr,
 104                                       const char *buf, size_t count)  {
 105         char* c;
 106         led_green = simple_strtol(buf, &c, 10);
 107         toneport_update_led(dev);
 108         return count;
 109 }
 110
 111 static DEVICE_ATTR(led_red, S_IWUGO | S_IRUGO, line6_nop_read, toneport_set_led_red);
 112 static DEVICE_ATTR(led_green, S_IWUGO | S_IRUGO, line6_nop_read, toneport_set_led_green);
 113
 114
 115 static int toneport_send_cmd(struct usb_device *usbdev, int cmd1, int cmd2)
 116 {
 117         int ret;
 118         ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev,0), 0x67,
 119                                                                                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 120                                                                                                 cmd1, cmd2, NULL, 0, LINE6_TIMEOUT * HZ);
 121
 122         if(ret < 0)     {
 123                 err("send failed (error %d)\n", ret);
 124                 return ret;
 125         }
 126
 127         return 0;
 128 }
 129
 130 /*
 131         Toneport destructor.
 132 */
 133 static void toneport_destruct(struct usb_interface *interface)
 134 {
 135         struct usb_line6_toneport *toneport = usb_get_intfdata(interface);
 136         struct usb_line6 *line6;
 137
 138         if(toneport == NULL) return;
 139         line6 = &toneport->line6;
 140         if(line6 == NULL) return;
 141         line6_cleanup_audio(line6);
 142 }
 143
 144 /*
 145          Init Toneport device.
 146 */
 147 int toneport_init(struct usb_interface *interface, struct usb_line6_toneport *toneport)
 148 {
 149         int err, ticks;
 150         struct usb_line6 *line6 = &toneport->line6;
 151         struct usb_device *usbdev;
 152
 153         if((interface == NULL) || (toneport == NULL))
 154                 return -ENODEV;
 155
 156         /* initialize audio system: */
 157         if((err = line6_init_audio(line6)) < 0) {
 158                 toneport_destruct(interface);
 159                 return err;
 160         }
 161
 162         /* initialize PCM subsystem: */
 163         if((err = line6_init_pcm(line6, &toneport_pcm_properties)) < 0) {
 164                 toneport_destruct(interface);
 165                 return err;
 166         }
 167
 168         /* register audio system: */
 169         if((err = line6_register_audio(line6)) < 0) {
 170                 toneport_destruct(interface);
 171                 return err;
 172         }
 173
 174         usbdev = line6->usbdev;
 175         line6_read_serial_number(line6, &toneport->serial_number);
 176         line6_read_data(line6, 0x80c2, &toneport->firmware_version, 1);
 177
 178         /* sync time on device with host: */
 179         ticks = (int)get_seconds();
 180         line6_write_data(line6, 0x80c6, &ticks, 4);
 181
 182         /*
 183         seems to work without the first two...
 184         */
 185         //toneport_send_cmd(usbdev, 0x0201, 0x0002);  // ..
 186         //toneport_send_cmd(usbdev, 0x0801, 0x0000);  // ..
 187         toneport_send_cmd(usbdev, 0x0301, 0x0000);      // only one that works for me; on GP, TP might be different?
 188
 189         if (usbdev->descriptor.idProduct!=LINE6_DEVID_GUITARPORT) {
 190                 CHECK_RETURN(device_create_file(&interface->dev, &dev_attr_led_red));
 191                 CHECK_RETURN(device_create_file(&interface->dev, &dev_attr_led_green));
 192                 toneport_update_led(&usbdev->dev);
 193         }
 194
 195         return 0;
 196 }
 197
 198 /*
 199         Toneport device disconnected.
 200 */
 201 void toneport_disconnect(struct usb_interface *interface)
 202 {
 203         struct usb_line6_toneport *toneport;
 204
 205         if(interface == NULL) return;
 206         toneport = usb_get_intfdata(interface);
 207
 208         if (toneport->line6.usbdev->descriptor.idProduct != LINE6_DEVID_GUITARPORT) {
 209                 device_remove_file(&interface->dev, &dev_attr_led_red);
 210                 device_remove_file(&interface->dev, &dev_attr_led_green);
 211         }
 212
 213         if(toneport != NULL) {
 214                 struct snd_line6_pcm *line6pcm = toneport->line6.line6pcm;
 215
 216                 if(line6pcm != NULL) {
 217                         unlink_wait_clear_audio_out_urbs(line6pcm);
 218                         unlink_wait_clear_audio_in_urbs(line6pcm);
 219                 }
 220         }
 221
 222         toneport_destruct(interface);
 223 }