kernel/2.6.29.6-aldebaran-rt/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 <linux/interrupt.h>
  24 #include <linux/usb.h>
  25 #include <sound/core.h>
  26 #include <sound/memalloc.h>
  27 #include <sound/pcm.h>
  28 #include <sound/hwdep.h>
  29 #include "usx2y.h"
  30 #include "usbusx2y.h"
  31 #include "usX2Yhwdep.h"
  32
  33 int usX2Y_hwdep_pcm_new(struct snd_card *card);
  34
  35
  36 static int snd_us428ctls_vm_fault(struct vm_area_struct *area,
  37                                   struct vm_fault *vmf)
  38 {
  39         unsigned long offset;
  40         struct page * page;
  41         void *vaddr;
  42
  43         snd_printdd("ENTER, start %lXh, pgoff %ld\n",
  44                    area->vm_start,
  45                    vmf->pgoff);
  46
  47         offset = vmf->pgoff << PAGE_SHIFT;
  48         vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset;
  49         page = virt_to_page(vaddr);
  50         get_page(page);
  51         vmf->page = page;
  52
  53         snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n",
  54                     vaddr, page);
  55
  56         return 0;
  57 }
  58
  59 static struct vm_operations_struct us428ctls_vm_ops = {
  60         .fault = snd_us428ctls_vm_fault,
  61 };
  62
  63 static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
  64 {
  65         unsigned long   size = (unsigned long)(area->vm_end - area->vm_start);
  66         struct usX2Ydev *us428 = hw->private_data;
  67
  68         // FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
  69         // so as long as the device isn't fully initialised yet we return -EBUSY here.
  70         if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
  71                 return -EBUSY;
  72
  73         /* if userspace tries to mmap beyond end of our buffer, fail */
  74         if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
  75                 snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
  76                 return -EINVAL;
  77         }
  78
  79         if (!us428->us428ctls_sharedmem) {
  80                 init_waitqueue_head(&us428->us428ctls_wait_queue_head);
  81                 if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL)))
  82                         return -ENOMEM;
  83                 memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
  84                 us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
  85         }
  86         area->vm_ops = &us428ctls_vm_ops;
  87         area->vm_flags |= VM_RESERVED | VM_DONTEXPAND;
  88         area->vm_private_data = hw->private_data;
  89         return 0;
  90 }
  91
  92 static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
  93 {
  94         unsigned int    mask = 0;
  95         struct usX2Ydev *us428 = hw->private_data;
  96         struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
  97         if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
  98                 return POLLHUP;
  99
 100         poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
 101
 102         if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed)
 103                 mask |= POLLIN;
 104
 105         return mask;
 106 }
 107
 108
 109 static int snd_usX2Y_hwdep_open(struct snd_hwdep *hw, struct file *file)
 110 {
 111         return 0;
 112 }
 113
 114 static int snd_usX2Y_hwdep_release(struct snd_hwdep *hw, struct file *file)
 115 {
 116         return 0;
 117 }
 118
 119 static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
 120                                       struct snd_hwdep_dsp_status *info)
 121 {
 122         static char *type_ids[USX2Y_TYPE_NUMS] = {
 123                 [USX2Y_TYPE_122] = "us122",
 124                 [USX2Y_TYPE_224] = "us224",
 125                 [USX2Y_TYPE_428] = "us428",
 126         };
 127         struct usX2Ydev *us428 = hw->private_data;
 128         int id = -1;
 129
 130         switch (le16_to_cpu(us428->chip.dev->descriptor.idProduct)) {
 131         case USB_ID_US122:
 132                 id = USX2Y_TYPE_122;
 133                 break;
 134         case USB_ID_US224:
 135                 id = USX2Y_TYPE_224;
 136                 break;
 137         case USB_ID_US428:
 138                 id = USX2Y_TYPE_428;
 139                 break;
 140         }
 141         if (0 > id)
 142                 return -ENODEV;
 143         strcpy(info->id, type_ids[id]);
 144         info->num_dsps = 2;             // 0: Prepad Data, 1: FPGA Code
 145         if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
 146                 info->chip_ready = 1;
 147         info->version = USX2Y_DRIVER_VERSION;
 148         return 0;
 149 }
 150
 151
 152 static int usX2Y_create_usbmidi(struct snd_card *card)
 153 {
 154         static struct snd_usb_midi_endpoint_info quirk_data_1 = {
 155                 .out_ep = 0x06,
 156                 .in_ep = 0x06,
 157                 .out_cables =   0x001,
 158                 .in_cables =    0x001
 159         };
 160         static struct snd_usb_audio_quirk quirk_1 = {
 161                 .vendor_name =  "TASCAM",
 162                 .product_name = NAME_ALLCAPS,
 163                 .ifnum =        0,
 164                 .type = QUIRK_MIDI_FIXED_ENDPOINT,
 165                 .data = &quirk_data_1
 166         };
 167         static struct snd_usb_midi_endpoint_info quirk_data_2 = {
 168                 .out_ep = 0x06,
 169                 .in_ep = 0x06,
 170                 .out_cables =   0x003,
 171                 .in_cables =    0x003
 172         };
 173         static struct snd_usb_audio_quirk quirk_2 = {
 174                 .vendor_name =  "TASCAM",
 175                 .product_name = "US428",
 176                 .ifnum =        0,
 177                 .type = QUIRK_MIDI_FIXED_ENDPOINT,
 178                 .data = &quirk_data_2
 179         };
 180         struct usb_device *dev = usX2Y(card)->chip.dev;
 181         struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
 182         struct snd_usb_audio_quirk *quirk =
 183                 le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
 184                 &quirk_2 : &quirk_1;
 185
 186         snd_printdd("usX2Y_create_usbmidi \n");
 187         return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
 188 }
 189
 190 static int usX2Y_create_alsa_devices(struct snd_card *card)
 191 {
 192         int err;
 193
 194         do {
 195                 if ((err = usX2Y_create_usbmidi(card)) < 0) {
 196                         snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
 197                         break;
 198                 }
 199                 if ((err = usX2Y_audio_create(card)) < 0)
 200                         break;
 201                 if ((err = usX2Y_hwdep_pcm_new(card)) < 0)
 202                         break;
 203                 if ((err = snd_card_register(card)) < 0)
 204                         break;
 205         } while (0);
 206
 207         return err;
 208 }
 209
 210 static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
 211                                     struct snd_hwdep_dsp_image *dsp)
 212 {
 213         struct usX2Ydev *priv = hw->private_data;
 214         int     lret, err = -EINVAL;
 215         snd_printdd( "dsp_load %s\n", dsp->name);
 216
 217         if (access_ok(VERIFY_READ, dsp->image, dsp->length)) {
 218                 struct usb_device* dev = priv->chip.dev;
 219                 char *buf = kmalloc(dsp->length, GFP_KERNEL);
 220                 if (!buf)
 221                         return -ENOMEM;
 222                 if (copy_from_user(buf, dsp->image, dsp->length)) {
 223                         kfree(buf);
 224                         return -EFAULT;
 225                 }
 226                 err = usb_set_interface(dev, 0, 1);
 227                 if (err)
 228                         snd_printk(KERN_ERR "usb_set_interface error \n");
 229                 else
 230                         err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
 231                 kfree(buf);
 232         }
 233         if (err)
 234                 return err;
 235         if (dsp->index == 1) {
 236                 msleep(250);                            // give the device some time
 237                 err = usX2Y_AsyncSeq04_init(priv);
 238                 if (err) {
 239                         snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
 240                         return err;
 241                 }
 242                 err = usX2Y_In04_init(priv);
 243                 if (err) {
 244                         snd_printk(KERN_ERR "usX2Y_In04_init error \n");
 245                         return err;
 246                 }
 247                 err = usX2Y_create_alsa_devices(hw->card);
 248                 if (err) {
 249                         snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
 250                         snd_card_free(hw->card);
 251                         return err;
 252                 }
 253                 priv->chip_status |= USX2Y_STAT_CHIP_INIT;
 254                 snd_printdd("%s: alsa all started\n", hw->name);
 255         }
 256         return err;
 257 }
 258
 259
 260 int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
 261 {
 262         int err;
 263         struct snd_hwdep *hw;
 264
 265         if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
 266                 return err;
 267
 268         hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
 269         hw->private_data = usX2Y(card);
 270         hw->ops.open = snd_usX2Y_hwdep_open;
 271         hw->ops.release = snd_usX2Y_hwdep_release;
 272         hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
 273         hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
 274         hw->ops.mmap = snd_us428ctls_mmap;
 275         hw->ops.poll = snd_us428ctls_poll;
 276         hw->exclusive = 1;
 277         sprintf(hw->name, "/proc/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
 278         return 0;
 279 }
 280