sound/usb/usx2y/usX2Yhwdep.c

   1 /*
   2  * Driver for Tascam US-X2Y USB soundcards
   3  *
   4  * FPGA Loader + ALSA Startup
   5  *
   6  * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
   7  *
   8  *   This program is free software; you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License as published by
  10  *   the Free Software Foundation; either version 2 of the License, or
  11  *   (at your option) any later version.
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  */
  22
  23 #include <sound/driver.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/usb.h>
  26 #include <sound/core.h>
  27 #include <sound/memalloc.h>
  28 #include <sound/pcm.h>
  29 #include <sound/hwdep.h>
  30 #include "usx2y.h"
  31 #include "usbusx2y.h"
  32 #include "usX2Yhwdep.h"
  33
  34 int usX2Y_hwdep_pcm_new(struct snd_card *card);
  35
  36
  37 static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
  38 {
  39         unsigned long offset;
  40         struct page * page;
  41         void *vaddr;
  42
  43         snd_printdd("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
  44                    area->vm_start,
  45                    address - area->vm_start,
  46                    (address - area->vm_start) >> PAGE_SHIFT,
  47                    address);
  48
  49         offset = area->vm_pgoff << PAGE_SHIFT;
  50         offset += address - area->vm_start;
  51         snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_SIGBUS);
  52         vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset;
  53         page = virt_to_page(vaddr);
  54         get_page(page);
  55         snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);
  56
  57         if (type)
  58                 *type = VM_FAULT_MINOR;
  59
  60         return page;
  61 }
  62
  63 static struct vm_operations_struct us428ctls_vm_ops = {
  64         .nopage = snd_us428ctls_vm_nopage,
  65 };
  66
  67 static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
  68 {
  69         unsigned long   size = (unsigned long)(area->vm_end - area->vm_start);
  70         struct usX2Ydev *us428 = hw->private_data;
  71
  72         // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
  73         // so as long as the device isn't fully initialised yet we return -EBUSY here.
  74         if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
  75                 return -EBUSY;
  76
  77         /* if userspace tries to mmap beyond end of our buffer, fail */
  78         if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
  79                 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
  80                 return -EINVAL;
  81         }
  82
  83         if (!us428->us428ctls_sharedmem) {
  84                 init_waitqueue_head(&us428->us428ctls_wait_queue_head);
  85                 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL)))
  86                         return -ENOMEM;
  87                 memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
  88                 us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
  89         }
  90         area->vm_ops = &us428ctls_vm_ops;
  91         area->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
  92         area->vm_private_data = hw->private_data;
  93         return 0;
  94 }
  95
  96 static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
  97 {
  98         unsigned int    mask = 0;
  99         struct usX2Ydev *us428 = hw->private_data;
 100         struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
 101         if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
 102                 return POLLHUP;
 103
 104         poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
 105
 106         if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed)
 107                 mask |= POLLIN;
 108
 109         return mask;
 110 }
 111
 112
 113 static int snd_usX2Y_hwdep_open(struct snd_hwdep *hw, struct file *file)
 114 {
 115         return 0;
 116 }
 117
 118 static int snd_usX2Y_hwdep_release(struct snd_hwdep *hw, struct file *file)
 119 {
 120         return 0;
 121 }
 122
 123 static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
 124                                       struct snd_hwdep_dsp_status *info)
 125 {
 126         static char *type_ids[USX2Y_TYPE_NUMS] = {
 127                 [USX2Y_TYPE_122] = "us122",
 128                 [USX2Y_TYPE_224] = "us224",
 129                 [USX2Y_TYPE_428] = "us428",
 130         };
 131         struct usX2Ydev *us428 = hw->private_data;
 132         int id = -1;
 133
 134         switch (le16_to_cpu(us428->chip.dev->descriptor.idProduct)) {
 135         case USB_ID_US122:
 136                 id = USX2Y_TYPE_122;
 137                 break;
 138         case USB_ID_US224:
 139                 id = USX2Y_TYPE_224;
 140                 break;
 141         case USB_ID_US428:
 142                 id = USX2Y_TYPE_428;
 143                 break;
 144         }
 145         if (0 > id)
 146                 return -ENODEV;
 147         strcpy(info->id, type_ids[id]);
 148         info->num_dsps = 2;             // 0: Prepad Data, 1: FPGA Code
 149         if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
 150                 info->chip_ready = 1;
 151         info->version = USX2Y_DRIVER_VERSION;
 152         return 0;
 153 }
 154
 155
 156 static int usX2Y_create_usbmidi(struct snd_card *card)
 157 {
 158         static struct snd_usb_midi_endpoint_info quirk_data_1 = {
 159                 .out_ep = 0x06,
 160                 .in_ep = 0x06,
 161                 .out_cables =   0x001,
 162                 .in_cables =    0x001
 163         };
 164         static struct snd_usb_audio_quirk quirk_1 = {
 165                 .vendor_name =  "TASCAM",
 166                 .product_name = NAME_ALLCAPS,
 167                 .ifnum =        0,
 168                 .type = QUIRK_MIDI_FIXED_ENDPOINT,
 169                 .data = &quirk_data_1
 170         };
 171         static struct snd_usb_midi_endpoint_info quirk_data_2 = {
 172                 .out_ep = 0x06,
 173                 .in_ep = 0x06,
 174                 .out_cables =   0x003,
 175                 .in_cables =    0x003
 176         };
 177         static struct snd_usb_audio_quirk quirk_2 = {
 178                 .vendor_name =  "TASCAM",
 179                 .product_name = "US428",
 180                 .ifnum =        0,
 181                 .type = QUIRK_MIDI_FIXED_ENDPOINT,
 182                 .data = &quirk_data_2
 183         };
 184         struct usb_device *dev = usX2Y(card)->chip.dev;
 185         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
 186         struct snd_usb_audio_quirk *quirk =
 187                 le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
 188                 &quirk_2 : &quirk_1;
 189
 190         snd_printdd("usX2Y_create_usbmidi \n");
 191         return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
 192 }
 193
 194 static int usX2Y_create_alsa_devices(struct snd_card *card)
 195 {
 196         int err;
 197
 198         do {
 199                 if ((err = usX2Y_create_usbmidi(card)) < 0) {
 200                         snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
 201                         break;
 202                 }
 203                 if ((err = usX2Y_audio_create(card)) < 0)
 204                         break;
 205                 if ((err = usX2Y_hwdep_pcm_new(card)) < 0)
 206                         break;
 207                 if ((err = snd_card_register(card)) < 0)
 208                         break;
 209         } while (0);
 210
 211         return err;
 212 }
 213
 214 static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
 215                                     struct snd_hwdep_dsp_image *dsp)
 216 {
 217         struct usX2Ydev *priv = hw->private_data;
 218         int     lret, err = -EINVAL;
 219         snd_printdd( "dsp_load %s\n", dsp->name);
 220
 221         if (access_ok(VERIFY_READ, dsp->image, dsp->length)) {
 222                 struct usb_device* dev = priv->chip.dev;
 223                 char *buf = kmalloc(dsp->length, GFP_KERNEL);
 224                 if (!buf)
 225                         return -ENOMEM;
 226                 if (copy_from_user(buf, dsp->image, dsp->length)) {
 227                         kfree(buf);
 228                         return -EFAULT;
 229                 }
 230                 err = usb_set_interface(dev, 0, 1);
 231                 if (err)
 232                         snd_printk(KERN_ERR "usb_set_interface error \n");
 233                 else
 234                         err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
 235                 kfree(buf);
 236         }
 237         if (err)
 238                 return err;
 239         if (dsp->index == 1) {
 240                 msleep(250);                            // give the device some time
 241                 err = usX2Y_AsyncSeq04_init(priv);
 242                 if (err) {
 243                         snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
 244                         return err;
 245                 }
 246                 err = usX2Y_In04_init(priv);
 247                 if (err) {
 248                         snd_printk(KERN_ERR "usX2Y_In04_init error \n");
 249                         return err;
 250                 }
 251                 err = usX2Y_create_alsa_devices(hw->card);
 252                 if (err) {
 253                         snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
 254                         snd_card_free(hw->card);
 255                         return err;
 256                 }
 257                 priv->chip_status |= USX2Y_STAT_CHIP_INIT;
 258                 snd_printdd("%s: alsa all started\n", hw->name);
 259         }
 260         return err;
 261 }
 262
 263
 264 int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
 265 {
 266         int err;
 267         struct snd_hwdep *hw;
 268
 269         if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
 270                 return err;
 271
 272         hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
 273         hw->private_data = usX2Y(card);
 274         hw->ops.open = snd_usX2Y_hwdep_open;
 275         hw->ops.release = snd_usX2Y_hwdep_release;
 276         hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
 277         hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
 278         hw->ops.mmap = snd_us428ctls_mmap;
 279         hw->ops.poll = snd_us428ctls_poll;
 280         hw->exclusive = 1;
 281         sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
 282         return 0;
 283 }
 284