git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/saa7134/saa7134-oss.c

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * oss dsp interface
   5  *
   6  * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   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., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/init.h>
  24 #include <linux/list.h>
  25 #include <linux/module.h>
  26 #include <linux/moduleparam.h>
  27 #include <linux/kernel.h>
  28 #include <linux/slab.h>
  29 #include <linux/soundcard.h>
  30
  31 #include "saa7134-reg.h"
  32 #include "saa7134.h"
  33
  34 /* ------------------------------------------------------------------ */
  35
  36 static unsigned int oss_debug  = 0;
  37 module_param(oss_debug, int, 0644);
  38 MODULE_PARM_DESC(oss_debug,"enable debug messages [oss]");
  39
  40 static unsigned int oss_rate  = 0;
  41 module_param(oss_rate, int, 0444);
  42 MODULE_PARM_DESC(oss_rate,"sample rate (valid are: 32000,48000)");
  43
  44 #define dprintk(fmt, arg...)    if (oss_debug) \
  45         printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)
  46
  47 /* ------------------------------------------------------------------ */
  48
  49 static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
  50 {
  51         if (blksize < 0x100)
  52                 blksize = 0x100;
  53         if (blksize > 0x10000)
  54                 blksize = 0x10000;
  55
  56         if (blocks < 2)
  57                 blocks = 2;
  58         if ((blksize * blocks) > 1024*1024)
  59                 blocks = 1024*1024 / blksize;
  60
  61         dev->oss.blocks  = blocks;
  62         dev->oss.blksize = blksize;
  63         dev->oss.bufsize = blksize * blocks;
  64
  65         dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
  66                 blocks,blksize,blksize * blocks / 1024);
  67         return 0;
  68 }
  69
  70 static int dsp_buffer_init(struct saa7134_dev *dev)
  71 {
  72         int err;
  73
  74         if (!dev->oss.bufsize)
  75                 BUG();
  76         videobuf_dma_init(&dev->oss.dma);
  77         err = videobuf_dma_init_kernel(&dev->oss.dma, PCI_DMA_FROMDEVICE,
  78                                        (dev->oss.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
  79         if (0 != err)
  80                 return err;
  81         return 0;
  82 }
  83
  84 static int dsp_buffer_free(struct saa7134_dev *dev)
  85 {
  86         if (!dev->oss.blksize)
  87                 BUG();
  88         videobuf_dma_free(&dev->oss.dma);
  89         dev->oss.blocks  = 0;
  90         dev->oss.blksize = 0;
  91         dev->oss.bufsize = 0;
  92         return 0;
  93 }
  94
  95 static void dsp_dma_start(struct saa7134_dev *dev)
  96 {
  97         dev->oss.dma_blk     = 0;
  98         dev->oss.dma_running = 1;
  99         saa7134_set_dmabits(dev);
 100 }
 101
 102 static void dsp_dma_stop(struct saa7134_dev *dev)
 103 {
 104         dev->oss.dma_blk     = -1;
 105         dev->oss.dma_running = 0;
 106         saa7134_set_dmabits(dev);
 107 }
 108
 109 static int dsp_rec_start(struct saa7134_dev *dev)
 110 {
 111         int err, bswap, sign;
 112         u32 fmt, control;
 113         unsigned long flags;
 114
 115         /* prepare buffer */
 116         if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->oss.dma)))
 117                 return err;
 118         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->oss.pt)))
 119                 goto fail1;
 120         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->oss.pt,
 121                                               dev->oss.dma.sglist,
 122                                               dev->oss.dma.sglen,
 123                                               0)))
 124                 goto fail2;
 125
 126         /* sample format */
 127         switch (dev->oss.afmt) {
 128         case AFMT_U8:
 129         case AFMT_S8:     fmt = 0x00;  break;
 130         case AFMT_U16_LE:
 131         case AFMT_U16_BE:
 132         case AFMT_S16_LE:
 133         case AFMT_S16_BE: fmt = 0x01;  break;
 134         default:
 135                 err = -EINVAL;
 136                 goto fail2;
 137         }
 138
 139         switch (dev->oss.afmt) {
 140         case AFMT_S8:
 141         case AFMT_S16_LE:
 142         case AFMT_S16_BE: sign = 1; break;
 143         default:          sign = 0; break;
 144         }
 145
 146         switch (dev->oss.afmt) {
 147         case AFMT_U16_BE:
 148         case AFMT_S16_BE: bswap = 1; break;
 149         default:          bswap = 0; break;
 150         }
 151
 152         switch (dev->pci->device) {
 153         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 154                 if (1 == dev->oss.channels)
 155                         fmt |= (1 << 3);
 156                 if (2 == dev->oss.channels)
 157                         fmt |= (3 << 3);
 158                 if (sign)
 159                         fmt |= 0x04;
 160                 fmt |= (TV == dev->oss.input) ? 0xc0 : 0x80;
 161
 162                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->oss.blksize - 1) & 0x0000ff));
 163                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->oss.blksize - 1) & 0x00ff00) >>  8);
 164                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->oss.blksize - 1) & 0xff0000) >> 16);
 165                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
 166
 167                 break;
 168         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 169         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 170                 if (1 == dev->oss.channels)
 171                         fmt |= (1 << 4);
 172                 if (2 == dev->oss.channels)
 173                         fmt |= (2 << 4);
 174                 if (!sign)
 175                         fmt |= 0x04;
 176                 saa_writel(0x588 >> 2, dev->oss.blksize -4);
 177                 saa_writel(0x58c >> 2, 0x543210 | (fmt << 24));
 178                 break;
 179         }
 180         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
 181                 dev->oss.afmt, dev->oss.channels, fmt,
 182                 bswap ? 'b' : '-');
 183
 184         /* dma: setup channel 6 (= AUDIO) */
 185         control = SAA7134_RS_CONTROL_BURST_16 |
 186                 SAA7134_RS_CONTROL_ME |
 187                 (dev->oss.pt.dma >> 12);
 188         if (bswap)
 189                 control |= SAA7134_RS_CONTROL_BSWAP;
 190         saa_writel(SAA7134_RS_BA1(6),0);
 191         saa_writel(SAA7134_RS_BA2(6),dev->oss.blksize);
 192         saa_writel(SAA7134_RS_PITCH(6),0);
 193         saa_writel(SAA7134_RS_CONTROL(6),control);
 194
 195         /* start dma */
 196         dev->oss.recording_on = 1;
 197         spin_lock_irqsave(&dev->slock,flags);
 198         dsp_dma_start(dev);
 199         spin_unlock_irqrestore(&dev->slock,flags);
 200         return 0;
 201
 202  fail2:
 203         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 204  fail1:
 205         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 206         return err;
 207 }
 208
 209 static int dsp_rec_stop(struct saa7134_dev *dev)
 210 {
 211         unsigned long flags;
 212
 213         dprintk("rec_stop dma_blk=%d\n",dev->oss.dma_blk);
 214
 215         /* stop dma */
 216         dev->oss.recording_on = 0;
 217         spin_lock_irqsave(&dev->slock,flags);
 218         dsp_dma_stop(dev);
 219         spin_unlock_irqrestore(&dev->slock,flags);
 220
 221         /* unlock buffer */
 222         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 223         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 224         return 0;
 225 }
 226
 227 /* ------------------------------------------------------------------ */
 228
 229 static int dsp_open(struct inode *inode, struct file *file)
 230 {
 231         int minor = iminor(inode);
 232         struct saa7134_dev *h,*dev = NULL;
 233         struct list_head *list;
 234         int err;
 235
 236         list_for_each(list,&saa7134_devlist) {
 237                 h = list_entry(list, struct saa7134_dev, devlist);
 238                 if (h->oss.minor_dsp == minor)
 239                         dev = h;
 240         }
 241         if (NULL == dev)
 242                 return -ENODEV;
 243
 244         down(&dev->oss.lock);
 245         err = -EBUSY;
 246         if (dev->oss.users_dsp)
 247                 goto fail1;
 248         dev->oss.users_dsp++;
 249         file->private_data = dev;
 250
 251         dev->oss.afmt        = AFMT_U8;
 252         dev->oss.channels    = 1;
 253         dev->oss.read_count  = 0;
 254         dev->oss.read_offset = 0;
 255         dsp_buffer_conf(dev,PAGE_SIZE,64);
 256         err = dsp_buffer_init(dev);
 257         if (0 != err)
 258                 goto fail2;
 259
 260         up(&dev->oss.lock);
 261         return 0;
 262
 263  fail2:
 264         dev->oss.users_dsp--;
 265  fail1:
 266         up(&dev->oss.lock);
 267         return err;
 268 }
 269
 270 static int dsp_release(struct inode *inode, struct file *file)
 271 {
 272         struct saa7134_dev *dev = file->private_data;
 273
 274         down(&dev->oss.lock);
 275         if (dev->oss.recording_on)
 276                 dsp_rec_stop(dev);
 277         dsp_buffer_free(dev);
 278         dev->oss.users_dsp--;
 279         file->private_data = NULL;
 280         up(&dev->oss.lock);
 281         return 0;
 282 }
 283
 284 static ssize_t dsp_read(struct file *file, char __user *buffer,
 285                         size_t count, loff_t *ppos)
 286 {
 287         struct saa7134_dev *dev = file->private_data;
 288         DECLARE_WAITQUEUE(wait, current);
 289         unsigned int bytes;
 290         unsigned long flags;
 291         int err,ret = 0;
 292
 293         add_wait_queue(&dev->oss.wq, &wait);
 294         down(&dev->oss.lock);
 295         while (count > 0) {
 296                 /* wait for data if needed */
 297                 if (0 == dev->oss.read_count) {
 298                         if (!dev->oss.recording_on) {
 299                                 err = dsp_rec_start(dev);
 300                                 if (err < 0) {
 301                                         if (0 == ret)
 302                                                 ret = err;
 303                                         break;
 304                                 }
 305                         }
 306                         if (dev->oss.recording_on &&
 307                             !dev->oss.dma_running) {
 308                                 /* recover from overruns */
 309                                 spin_lock_irqsave(&dev->slock,flags);
 310                                 dsp_dma_start(dev);
 311                                 spin_unlock_irqrestore(&dev->slock,flags);
 312                         }
 313                         if (file->f_flags & O_NONBLOCK) {
 314                                 if (0 == ret)
 315                                         ret = -EAGAIN;
 316                                 break;
 317                         }
 318                         up(&dev->oss.lock);
 319                         set_current_state(TASK_INTERRUPTIBLE);
 320                         if (0 == dev->oss.read_count)
 321                                 schedule();
 322                         set_current_state(TASK_RUNNING);
 323                         down(&dev->oss.lock);
 324                         if (signal_pending(current)) {
 325                                 if (0 == ret)
 326                                         ret = -EINTR;
 327                                 break;
 328                         }
 329                 }
 330
 331                 /* copy data to userspace */
 332                 bytes = count;
 333                 if (bytes > dev->oss.read_count)
 334                         bytes = dev->oss.read_count;
 335                 if (bytes > dev->oss.bufsize - dev->oss.read_offset)
 336                         bytes = dev->oss.bufsize - dev->oss.read_offset;
 337                 if (copy_to_user(buffer + ret,
 338                                  dev->oss.dma.vmalloc + dev->oss.read_offset,
 339                                  bytes)) {
 340                         if (0 == ret)
 341                                 ret = -EFAULT;
 342                         break;
 343                 }
 344
 345                 ret   += bytes;
 346                 count -= bytes;
 347                 dev->oss.read_count  -= bytes;
 348                 dev->oss.read_offset += bytes;
 349                 if (dev->oss.read_offset == dev->oss.bufsize)
 350                         dev->oss.read_offset = 0;
 351         }
 352         up(&dev->oss.lock);
 353         remove_wait_queue(&dev->oss.wq, &wait);
 354         return ret;
 355 }
 356
 357 static ssize_t dsp_write(struct file *file, const char __user *buffer,
 358                          size_t count, loff_t *ppos)
 359 {
 360         return -EINVAL;
 361 }
 362
 363 static int dsp_ioctl(struct inode *inode, struct file *file,
 364                      unsigned int cmd, unsigned long arg)
 365 {
 366         struct saa7134_dev *dev = file->private_data;
 367         void __user *argp = (void __user *) arg;
 368         int __user *p = argp;
 369         int val = 0;
 370
 371         if (oss_debug > 1)
 372                 saa7134_print_ioctl(dev->name,cmd);
 373         switch (cmd) {
 374         case OSS_GETVERSION:
 375                 return put_user(SOUND_VERSION, p);
 376         case SNDCTL_DSP_GETCAPS:
 377                 return 0;
 378
 379         case SNDCTL_DSP_SPEED:
 380                 if (get_user(val, p))
 381                         return -EFAULT;
 382                 /* fall through */
 383         case SOUND_PCM_READ_RATE:
 384                 return put_user(dev->oss.rate, p);
 385
 386         case SNDCTL_DSP_STEREO:
 387                 if (get_user(val, p))
 388                         return -EFAULT;
 389                 down(&dev->oss.lock);
 390                 dev->oss.channels = val ? 2 : 1;
 391                 if (dev->oss.recording_on) {
 392                         dsp_rec_stop(dev);
 393                         dsp_rec_start(dev);
 394                 }
 395                 up(&dev->oss.lock);
 396                 return put_user(dev->oss.channels-1, p);
 397
 398         case SNDCTL_DSP_CHANNELS:
 399                 if (get_user(val, p))
 400                         return -EFAULT;
 401                 if (val != 1 && val != 2)
 402                         return -EINVAL;
 403                 down(&dev->oss.lock);
 404                 dev->oss.channels = val;
 405                 if (dev->oss.recording_on) {
 406                         dsp_rec_stop(dev);
 407                         dsp_rec_start(dev);
 408                 }
 409                 up(&dev->oss.lock);
 410                 /* fall through */
 411         case SOUND_PCM_READ_CHANNELS:
 412                 return put_user(dev->oss.channels, p);
 413
 414         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 415                 return put_user(AFMT_U8     | AFMT_S8     |
 416                                 AFMT_U16_LE | AFMT_U16_BE |
 417                                 AFMT_S16_LE | AFMT_S16_BE, p);
 418
 419         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 420                 if (get_user(val, p))
 421                         return -EFAULT;
 422                 switch (val) {
 423                 case AFMT_QUERY:
 424                         /* nothing to do */
 425                         break;
 426                 case AFMT_U8:
 427                 case AFMT_S8:
 428                 case AFMT_U16_LE:
 429                 case AFMT_U16_BE:
 430                 case AFMT_S16_LE:
 431                 case AFMT_S16_BE:
 432                         down(&dev->oss.lock);
 433                         dev->oss.afmt = val;
 434                         if (dev->oss.recording_on) {
 435                                 dsp_rec_stop(dev);
 436                                 dsp_rec_start(dev);
 437                         }
 438                         up(&dev->oss.lock);
 439                         return put_user(dev->oss.afmt, p);
 440                 default:
 441                         return -EINVAL;
 442                 }
 443
 444         case SOUND_PCM_READ_BITS:
 445                 switch (dev->oss.afmt) {
 446                 case AFMT_U8:
 447                 case AFMT_S8:
 448                         return put_user(8, p);
 449                 case AFMT_U16_LE:
 450                 case AFMT_U16_BE:
 451                 case AFMT_S16_LE:
 452                 case AFMT_S16_BE:
 453                         return put_user(16, p);
 454                 default:
 455                         return -EINVAL;
 456                 }
 457
 458         case SNDCTL_DSP_NONBLOCK:
 459                 file->f_flags |= O_NONBLOCK;
 460                 return 0;
 461
 462         case SNDCTL_DSP_RESET:
 463                 down(&dev->oss.lock);
 464                 if (dev->oss.recording_on)
 465                         dsp_rec_stop(dev);
 466                 up(&dev->oss.lock);
 467                 return 0;
 468         case SNDCTL_DSP_GETBLKSIZE:
 469                 return put_user(dev->oss.blksize, p);
 470
 471         case SNDCTL_DSP_SETFRAGMENT:
 472                 if (get_user(val, p))
 473                         return -EFAULT;
 474                 if (dev->oss.recording_on)
 475                         return -EBUSY;
 476                 dsp_buffer_free(dev);
 477                 /* used to be arg >> 16 instead of val >> 16; fixed */
 478                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 479                 dsp_buffer_init(dev);
 480                 return 0;
 481
 482         case SNDCTL_DSP_SYNC:
 483                 /* NOP */
 484                 return 0;
 485
 486         case SNDCTL_DSP_GETISPACE:
 487         {
 488                 audio_buf_info info;
 489                 info.fragsize   = dev->oss.blksize;
 490                 info.fragstotal = dev->oss.blocks;
 491                 info.bytes      = dev->oss.read_count;
 492                 info.fragments  = info.bytes / info.fragsize;
 493                 if (copy_to_user(argp, &info, sizeof(info)))
 494                         return -EFAULT;
 495                 return 0;
 496         }
 497         default:
 498                 return -EINVAL;
 499         }
 500 }
 501
 502 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 503 {
 504         struct saa7134_dev *dev = file->private_data;
 505         unsigned int mask = 0;
 506
 507         poll_wait(file, &dev->oss.wq, wait);
 508
 509         if (0 == dev->oss.read_count) {
 510                 down(&dev->oss.lock);
 511                 if (!dev->oss.recording_on)
 512                         dsp_rec_start(dev);
 513                 up(&dev->oss.lock);
 514         } else
 515                 mask |= (POLLIN | POLLRDNORM);
 516         return mask;
 517 }
 518
 519 struct file_operations saa7134_dsp_fops = {
 520         .owner   = THIS_MODULE,
 521         .open    = dsp_open,
 522         .release = dsp_release,
 523         .read    = dsp_read,
 524         .write   = dsp_write,
 525         .ioctl   = dsp_ioctl,
 526         .poll    = dsp_poll,
 527         .llseek  = no_llseek,
 528 };
 529
 530 /* ------------------------------------------------------------------ */
 531
 532 static int
 533 mixer_recsrc_7134(struct saa7134_dev *dev)
 534 {
 535         int analog_io,rate;
 536
 537         switch (dev->oss.input) {
 538         case TV:
 539                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 540                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 541                 break;
 542         case LINE1:
 543         case LINE2:
 544         case LINE2_LEFT:
 545                 analog_io = (LINE1 == dev->oss.input) ? 0x00 : 0x08;
 546                 rate = (32000 == dev->oss.rate) ? 0x01 : 0x03;
 547                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 548                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 549                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 550                 break;
 551         }
 552         return 0;
 553 }
 554
 555 static int
 556 mixer_recsrc_7133(struct saa7134_dev *dev)
 557 {
 558         u32 anabar, xbarin;
 559
 560         xbarin = 0x03; // adc
 561     anabar = 0;
 562         switch (dev->oss.input) {
 563         case TV:
 564                 xbarin = 0; // Demodulator
 565         anabar = 2; // DACs
 566                 break;
 567         case LINE1:
 568                 anabar = 0;  // aux1, aux1
 569                 break;
 570         case LINE2:
 571         case LINE2_LEFT:
 572                 anabar = 9;  // aux2, aux2
 573                 break;
 574         }
 575     /* output xbar always main channel */
 576         saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
 577         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 578         saa_writel(0x594 >> 2, anabar);
 579
 580         return 0;
 581 }
 582
 583 static int
 584 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 585 {
 586         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 587
 588         dev->oss.count++;
 589         dev->oss.input = src;
 590         dprintk("mixer input = %s\n",iname[dev->oss.input]);
 591
 592         switch (dev->pci->device) {
 593         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 594                 mixer_recsrc_7134(dev);
 595                 break;
 596         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 597         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 598                 mixer_recsrc_7133(dev);
 599                 break;
 600         }
 601         return 0;
 602 }
 603
 604 static int
 605 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 606 {
 607         switch (dev->pci->device) {
 608         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 609                 switch (src) {
 610                 case TV:
 611                         /* nothing */
 612                         break;
 613                 case LINE1:
 614                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 615                                    (100 == level) ? 0x00 : 0x10);
 616                         break;
 617                 case LINE2:
 618                 case LINE2_LEFT:
 619                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 620                                    (100 == level) ? 0x00 : 0x20);
 621                         break;
 622                 }
 623                 break;
 624         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 625         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 626                 /* nothing */
 627                 break;
 628         }
 629         return 0;
 630 }
 631
 632 /* ------------------------------------------------------------------ */
 633
 634 static int mixer_open(struct inode *inode, struct file *file)
 635 {
 636         int minor = iminor(inode);
 637         struct saa7134_dev *h,*dev = NULL;
 638         struct list_head *list;
 639
 640         list_for_each(list,&saa7134_devlist) {
 641                 h = list_entry(list, struct saa7134_dev, devlist);
 642                 if (h->oss.minor_mixer == minor)
 643                         dev = h;
 644         }
 645         if (NULL == dev)
 646                 return -ENODEV;
 647
 648         file->private_data = dev;
 649         return 0;
 650 }
 651
 652 static int mixer_release(struct inode *inode, struct file *file)
 653 {
 654         file->private_data = NULL;
 655         return 0;
 656 }
 657
 658 static int mixer_ioctl(struct inode *inode, struct file *file,
 659                      unsigned int cmd, unsigned long arg)
 660 {
 661         struct saa7134_dev *dev = file->private_data;
 662         enum saa7134_audio_in input;
 663         int val,ret;
 664         void __user *argp = (void __user *) arg;
 665         int __user *p = argp;
 666
 667         if (oss_debug > 1)
 668                 saa7134_print_ioctl(dev->name,cmd);
 669         switch (cmd) {
 670         case OSS_GETVERSION:
 671                 return put_user(SOUND_VERSION, p);
 672         case SOUND_MIXER_INFO:
 673         {
 674                 mixer_info info;
 675                 memset(&info,0,sizeof(info));
 676                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 677                 strlcpy(info.name, dev->name,  sizeof(info.name));
 678                 info.modify_counter = dev->oss.count;
 679                 if (copy_to_user(argp, &info, sizeof(info)))
 680                         return -EFAULT;
 681                 return 0;
 682         }
 683         case SOUND_OLD_MIXER_INFO:
 684         {
 685                 _old_mixer_info info;
 686                 memset(&info,0,sizeof(info));
 687                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 688                 strlcpy(info.name, dev->name,  sizeof(info.name));
 689                 if (copy_to_user(argp, &info, sizeof(info)))
 690                         return -EFAULT;
 691                 return 0;
 692         }
 693         case MIXER_READ(SOUND_MIXER_CAPS):
 694                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 695         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 696                 return put_user(0, p);
 697         case MIXER_READ(SOUND_MIXER_RECMASK):
 698         case MIXER_READ(SOUND_MIXER_DEVMASK):
 699                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 700                 if (32000 == dev->oss.rate)
 701                         val |= SOUND_MASK_VIDEO;
 702                 return put_user(val, p);
 703
 704         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 705                 if (get_user(val, p))
 706                         return -EFAULT;
 707                 input = dev->oss.input;
 708                 if (32000 == dev->oss.rate  &&
 709                     val & SOUND_MASK_VIDEO  &&  dev->oss.input != TV)
 710                         input = TV;
 711                 if (val & SOUND_MASK_LINE1  &&  dev->oss.input != LINE1)
 712                         input = LINE1;
 713                 if (val & SOUND_MASK_LINE2  &&  dev->oss.input != LINE2)
 714                         input = LINE2;
 715                 if (input != dev->oss.input)
 716                         mixer_recsrc(dev,input);
 717                 /* fall throuth */
 718         case MIXER_READ(SOUND_MIXER_RECSRC):
 719                 switch (dev->oss.input) {
 720                 case TV:    ret = SOUND_MASK_VIDEO; break;
 721                 case LINE1: ret = SOUND_MASK_LINE1; break;
 722                 case LINE2: ret = SOUND_MASK_LINE2; break;
 723                 default:    ret = 0;
 724                 }
 725                 return put_user(ret, p);
 726
 727         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 728         case MIXER_READ(SOUND_MIXER_VIDEO):
 729                 if (32000 != dev->oss.rate)
 730                         return -EINVAL;
 731                 return put_user(100 | 100 << 8, p);
 732
 733         case MIXER_WRITE(SOUND_MIXER_LINE1):
 734                 if (get_user(val, p))
 735                         return -EFAULT;
 736                 val &= 0xff;
 737                 val = (val <= 50) ? 50 : 100;
 738                 dev->oss.line1 = val;
 739                 mixer_level(dev,LINE1,dev->oss.line1);
 740                 /* fall throuth */
 741         case MIXER_READ(SOUND_MIXER_LINE1):
 742                 return put_user(dev->oss.line1 | dev->oss.line1 << 8, p);
 743
 744         case MIXER_WRITE(SOUND_MIXER_LINE2):
 745                 if (get_user(val, p))
 746                         return -EFAULT;
 747                 val &= 0xff;
 748                 val = (val <= 50) ? 50 : 100;
 749                 dev->oss.line2 = val;
 750                 mixer_level(dev,LINE2,dev->oss.line2);
 751                 /* fall throuth */
 752         case MIXER_READ(SOUND_MIXER_LINE2):
 753                 return put_user(dev->oss.line2 | dev->oss.line2 << 8, p);
 754
 755         default:
 756                 return -EINVAL;
 757         }
 758 }
 759
 760 struct file_operations saa7134_mixer_fops = {
 761         .owner   = THIS_MODULE,
 762         .open    = mixer_open,
 763         .release = mixer_release,
 764         .ioctl   = mixer_ioctl,
 765         .llseek  = no_llseek,
 766 };
 767
 768 /* ------------------------------------------------------------------ */
 769
 770 int saa7134_oss_init1(struct saa7134_dev *dev)
 771 {
 772         /* general */
 773         init_MUTEX(&dev->oss.lock);
 774         init_waitqueue_head(&dev->oss.wq);
 775
 776         switch (dev->pci->device) {
 777         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 778         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 779                 saa_writel(0x588 >> 2, 0x00000fff);
 780                 saa_writel(0x58c >> 2, 0x00543210);
 781                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 782                 break;
 783         }
 784
 785         /* dsp */
 786         dev->oss.rate = 32000;
 787         if (oss_rate)
 788                 dev->oss.rate = oss_rate;
 789         dev->oss.rate = (dev->oss.rate > 40000) ? 48000 : 32000;
 790
 791         /* mixer */
 792         dev->oss.line1 = 50;
 793         dev->oss.line2 = 50;
 794         mixer_level(dev,LINE1,dev->oss.line1);
 795         mixer_level(dev,LINE2,dev->oss.line2);
 796         mixer_recsrc(dev, (dev->oss.rate == 32000) ? TV : LINE2);
 797
 798         return 0;
 799 }
 800
 801 int saa7134_oss_fini(struct saa7134_dev *dev)
 802 {
 803         /* nothing */
 804         return 0;
 805 }
 806
 807 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 808 {
 809         int next_blk, reg = 0;
 810
 811         spin_lock(&dev->slock);
 812         if (UNSET == dev->oss.dma_blk) {
 813                 dprintk("irq: recording stopped\n");
 814                 goto done;
 815         }
 816         if (0 != (status & 0x0f000000))
 817                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 818         if (0 == (status & 0x10000000)) {
 819                 /* odd */
 820                 if (0 == (dev->oss.dma_blk & 0x01))
 821                         reg = SAA7134_RS_BA1(6);
 822         } else {
 823                 /* even */
 824                 if (1 == (dev->oss.dma_blk & 0x01))
 825                         reg = SAA7134_RS_BA2(6);
 826         }
 827         if (0 == reg) {
 828                 dprintk("irq: field oops [%s]\n",
 829                         (status & 0x10000000) ? "even" : "odd");
 830                 goto done;
 831         }
 832         if (dev->oss.read_count >= dev->oss.blksize * (dev->oss.blocks-2)) {
 833                 dprintk("irq: overrun [full=%d/%d]\n",dev->oss.read_count,
 834                         dev->oss.bufsize);
 835                 dsp_dma_stop(dev);
 836                 goto done;
 837         }
 838
 839         /* next block addr */
 840         next_blk = (dev->oss.dma_blk + 2) % dev->oss.blocks;
 841         saa_writel(reg,next_blk * dev->oss.blksize);
 842         if (oss_debug > 2)
 843                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 844                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 845                         next_blk * dev->oss.blksize);
 846
 847         /* update status & wake waiting readers */
 848         dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks;
 849         dev->oss.read_count += dev->oss.blksize;
 850         wake_up(&dev->oss.wq);
 851
 852  done:
 853         spin_unlock(&dev->slock);
 854 }
 855
 856 /* ----------------------------------------------------------- */
 857 /*
 858  * Local variables:
 859  * c-basic-offset: 8
 860  * End:
 861  */