drivers/media/video/saa7134/saa7134-oss.c

   1 /*
   2  * $Id: saa7134-oss.c,v 1.11 2004/11/07 13:17:15 kraxel Exp $
   3  *
   4  * device driver for philips saa7134 based TV cards
   5  * oss dsp interface
   6  *
   7  * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/list.h>
  26 #include <linux/module.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         blksize &= ~0xff;
  52         if (blksize < 0x100)
  53                 blksize = 0x100;
  54         if (blksize > 0x10000)
  55                 blksize = 0x10000;
  56
  57         if (blocks < 2)
  58                 blocks = 2;
  59         while ((blksize * blocks) & ~PAGE_MASK)
  60                 blocks++;
  61         if ((blksize * blocks) > 1024*1024)
  62                 blocks = 1024*1024 / blksize;
  63
  64         dev->oss.blocks  = blocks;
  65         dev->oss.blksize = blksize;
  66         dev->oss.bufsize = blksize * blocks;
  67
  68         dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
  69                 blocks,blksize,blksize * blocks / 1024);
  70         return 0;
  71 }
  72
  73 static int dsp_buffer_init(struct saa7134_dev *dev)
  74 {
  75         int err;
  76
  77         if (!dev->oss.bufsize)
  78                 BUG();
  79         videobuf_dma_init(&dev->oss.dma);
  80         err = videobuf_dma_init_kernel(&dev->oss.dma, PCI_DMA_FROMDEVICE,
  81                                        dev->oss.bufsize >> PAGE_SHIFT);
  82         if (0 != err)
  83                 return err;
  84         return 0;
  85 }
  86
  87 static int dsp_buffer_free(struct saa7134_dev *dev)
  88 {
  89         if (!dev->oss.blksize)
  90                 BUG();
  91         videobuf_dma_free(&dev->oss.dma);
  92         dev->oss.blocks  = 0;
  93         dev->oss.blksize = 0;
  94         dev->oss.bufsize = 0;
  95         return 0;
  96 }
  97
  98 static void dsp_dma_start(struct saa7134_dev *dev)
  99 {
 100         dev->oss.dma_blk     = 0;
 101         dev->oss.dma_running = 1;
 102         saa7134_set_dmabits(dev);
 103 }
 104
 105 static void dsp_dma_stop(struct saa7134_dev *dev)
 106 {
 107         dev->oss.dma_blk     = -1;
 108         dev->oss.dma_running = 0;
 109         saa7134_set_dmabits(dev);
 110 }
 111
 112 static int dsp_rec_start(struct saa7134_dev *dev)
 113 {
 114         int err, bswap, sign;
 115         u32 fmt, control;
 116         unsigned long flags;
 117
 118         /* prepare buffer */
 119         if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->oss.dma)))
 120                 return err;
 121         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->oss.pt)))
 122                 goto fail1;
 123         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->oss.pt,
 124                                               dev->oss.dma.sglist,
 125                                               dev->oss.dma.sglen,
 126                                               0)))
 127                 goto fail2;
 128
 129         /* sample format */
 130         switch (dev->oss.afmt) {
 131         case AFMT_U8:
 132         case AFMT_S8:     fmt = 0x00;  break;
 133         case AFMT_U16_LE:
 134         case AFMT_U16_BE:
 135         case AFMT_S16_LE:
 136         case AFMT_S16_BE: fmt = 0x01;  break;
 137         default:
 138                 err = -EINVAL;
 139                 goto fail2;
 140         }
 141
 142         switch (dev->oss.afmt) {
 143         case AFMT_S8:
 144         case AFMT_S16_LE:
 145         case AFMT_S16_BE: sign = 1; break;
 146         default:          sign = 0; break;
 147         }
 148
 149         switch (dev->oss.afmt) {
 150         case AFMT_U16_BE:
 151         case AFMT_S16_BE: bswap = 1; break;
 152         default:          bswap = 0; break;
 153         }
 154
 155         switch (dev->pci->device) {
 156         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 157                 if (1 == dev->oss.channels)
 158                         fmt |= (1 << 3);
 159                 if (2 == dev->oss.channels)
 160                         fmt |= (3 << 3);
 161                 if (sign)
 162                         fmt |= 0x04;
 163                 fmt |= (TV == dev->oss.input) ? 0xc0 : 0x80;
 164
 165                 saa_writeb(SAA7134_NUM_SAMPLES0, (dev->oss.blksize & 0x0000ff));
 166                 saa_writeb(SAA7134_NUM_SAMPLES1, (dev->oss.blksize & 0x00ff00) >>  8);
 167                 saa_writeb(SAA7134_NUM_SAMPLES2, (dev->oss.blksize & 0xff0000) >> 16);
 168                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
 169                 break;
 170         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 171         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 172                 if (1 == dev->oss.channels)
 173                         fmt |= (1 << 4);
 174                 if (2 == dev->oss.channels)
 175                         fmt |= (2 << 4);
 176                 if (!sign)
 177                         fmt |= 0x04;
 178                 saa_writel(0x588 >> 2, dev->oss.blksize -4);
 179                 saa_writel(0x58c >> 2, 0x543210 | (fmt << 24));
 180                 break;
 181         }
 182         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
 183                 dev->oss.afmt, dev->oss.channels, fmt,
 184                 bswap ? 'b' : '-');
 185
 186         /* dma: setup channel 6 (= AUDIO) */
 187         control = SAA7134_RS_CONTROL_BURST_16 |
 188                 SAA7134_RS_CONTROL_ME |
 189                 (dev->oss.pt.dma >> 12);
 190         if (bswap)
 191                 control |= SAA7134_RS_CONTROL_BSWAP;
 192         saa_writel(SAA7134_RS_BA1(6),0);
 193         saa_writel(SAA7134_RS_BA2(6),dev->oss.blksize);
 194         saa_writel(SAA7134_RS_PITCH(6),0);
 195         saa_writel(SAA7134_RS_CONTROL(6),control);
 196
 197         /* start dma */
 198         dev->oss.recording_on = 1;
 199         spin_lock_irqsave(&dev->slock,flags);
 200         dsp_dma_start(dev);
 201         spin_unlock_irqrestore(&dev->slock,flags);
 202         return 0;
 203
 204  fail2:
 205         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 206  fail1:
 207         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 208         return err;
 209 }
 210
 211 static int dsp_rec_stop(struct saa7134_dev *dev)
 212 {
 213         unsigned long flags;
 214
 215         dprintk("rec_stop dma_blk=%d\n",dev->oss.dma_blk);
 216
 217         /* stop dma */
 218         dev->oss.recording_on = 0;
 219         spin_lock_irqsave(&dev->slock,flags);
 220         dsp_dma_stop(dev);
 221         spin_unlock_irqrestore(&dev->slock,flags);
 222
 223         /* unlock buffer */
 224         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 225         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 226         return 0;
 227 }
 228
 229 /* ------------------------------------------------------------------ */
 230
 231 static int dsp_open(struct inode *inode, struct file *file)
 232 {
 233         int minor = iminor(inode);
 234         struct saa7134_dev *h,*dev = NULL;
 235         struct list_head *list;
 236         int err;
 237
 238         list_for_each(list,&saa7134_devlist) {
 239                 h = list_entry(list, struct saa7134_dev, devlist);
 240                 if (h->oss.minor_dsp == minor)
 241                         dev = h;
 242         }
 243         if (NULL == dev)
 244                 return -ENODEV;
 245
 246         down(&dev->oss.lock);
 247         err = -EBUSY;
 248         if (dev->oss.users_dsp)
 249                 goto fail1;
 250         dev->oss.users_dsp++;
 251         file->private_data = dev;
 252
 253         dev->oss.afmt        = AFMT_U8;
 254         dev->oss.channels    = 1;
 255         dev->oss.read_count  = 0;
 256         dev->oss.read_offset = 0;
 257         dsp_buffer_conf(dev,PAGE_SIZE,64);
 258         err = dsp_buffer_init(dev);
 259         if (0 != err)
 260                 goto fail2;
 261
 262         up(&dev->oss.lock);
 263         return 0;
 264
 265  fail2:
 266         dev->oss.users_dsp--;
 267  fail1:
 268         up(&dev->oss.lock);
 269         return err;
 270 }
 271
 272 static int dsp_release(struct inode *inode, struct file *file)
 273 {
 274         struct saa7134_dev *dev = file->private_data;
 275
 276         down(&dev->oss.lock);
 277         if (dev->oss.recording_on)
 278                 dsp_rec_stop(dev);
 279         dsp_buffer_free(dev);
 280         dev->oss.users_dsp--;
 281         file->private_data = NULL;
 282         up(&dev->oss.lock);
 283         return 0;
 284 }
 285
 286 static ssize_t dsp_read(struct file *file, char __user *buffer,
 287                         size_t count, loff_t *ppos)
 288 {
 289         struct saa7134_dev *dev = file->private_data;
 290         DECLARE_WAITQUEUE(wait, current);
 291         unsigned int bytes;
 292         unsigned long flags;
 293         int err,ret = 0;
 294
 295         add_wait_queue(&dev->oss.wq, &wait);
 296         down(&dev->oss.lock);
 297         while (count > 0) {
 298                 /* wait for data if needed */
 299                 if (0 == dev->oss.read_count) {
 300                         if (!dev->oss.recording_on) {
 301                                 err = dsp_rec_start(dev);
 302                                 if (err < 0) {
 303                                         if (0 == ret)
 304                                                 ret = err;
 305                                         break;
 306                                 }
 307                         }
 308                         if (dev->oss.recording_on &&
 309                             !dev->oss.dma_running) {
 310                                 /* recover from overruns */
 311                                 spin_lock_irqsave(&dev->slock,flags);
 312                                 dsp_dma_start(dev);
 313                                 spin_unlock_irqrestore(&dev->slock,flags);
 314                         }
 315                         if (file->f_flags & O_NONBLOCK) {
 316                                 if (0 == ret)
 317                                         ret = -EAGAIN;
 318                                 break;
 319                         }
 320                         up(&dev->oss.lock);
 321                         set_current_state(TASK_INTERRUPTIBLE);
 322                         if (0 == dev->oss.read_count)
 323                                 schedule();
 324                         set_current_state(TASK_RUNNING);
 325                         down(&dev->oss.lock);
 326                         if (signal_pending(current)) {
 327                                 if (0 == ret)
 328                                         ret = -EINTR;
 329                                 break;
 330                         }
 331                 }
 332
 333                 /* copy data to userspace */
 334                 bytes = count;
 335                 if (bytes > dev->oss.read_count)
 336                         bytes = dev->oss.read_count;
 337                 if (bytes > dev->oss.bufsize - dev->oss.read_offset)
 338                         bytes = dev->oss.bufsize - dev->oss.read_offset;
 339                 if (copy_to_user(buffer + ret,
 340                                  dev->oss.dma.vmalloc + dev->oss.read_offset,
 341                                  bytes)) {
 342                         if (0 == ret)
 343                                 ret = -EFAULT;
 344                         break;
 345                 }
 346
 347                 ret   += bytes;
 348                 count -= bytes;
 349                 dev->oss.read_count  -= bytes;
 350                 dev->oss.read_offset += bytes;
 351                 if (dev->oss.read_offset == dev->oss.bufsize)
 352                         dev->oss.read_offset = 0;
 353         }
 354         up(&dev->oss.lock);
 355         remove_wait_queue(&dev->oss.wq, &wait);
 356         return ret;
 357 }
 358
 359 static ssize_t dsp_write(struct file *file, const char __user *buffer,
 360                          size_t count, loff_t *ppos)
 361 {
 362         return -EINVAL;
 363 }
 364
 365 static int dsp_ioctl(struct inode *inode, struct file *file,
 366                      unsigned int cmd, unsigned long arg)
 367 {
 368         struct saa7134_dev *dev = file->private_data;
 369         void __user *argp = (void __user *) arg;
 370         int __user *p = argp;
 371         int val = 0;
 372
 373         if (oss_debug > 1)
 374                 saa7134_print_ioctl(dev->name,cmd);
 375         switch (cmd) {
 376         case OSS_GETVERSION:
 377                 return put_user(SOUND_VERSION, p);
 378         case SNDCTL_DSP_GETCAPS:
 379                 return 0;
 380
 381         case SNDCTL_DSP_SPEED:
 382                 if (get_user(val, p))
 383                         return -EFAULT;
 384                 /* fall through */
 385         case SOUND_PCM_READ_RATE:
 386                 return put_user(dev->oss.rate, p);
 387
 388         case SNDCTL_DSP_STEREO:
 389                 if (get_user(val, p))
 390                         return -EFAULT;
 391                 down(&dev->oss.lock);
 392                 dev->oss.channels = val ? 2 : 1;
 393                 if (dev->oss.recording_on) {
 394                         dsp_rec_stop(dev);
 395                         dsp_rec_start(dev);
 396                 }
 397                 up(&dev->oss.lock);
 398                 return put_user(dev->oss.channels-1, p);
 399
 400         case SNDCTL_DSP_CHANNELS:
 401                 if (get_user(val, p))
 402                         return -EFAULT;
 403                 if (val != 1 && val != 2)
 404                         return -EINVAL;
 405                 down(&dev->oss.lock);
 406                 dev->oss.channels = val;
 407                 if (dev->oss.recording_on) {
 408                         dsp_rec_stop(dev);
 409                         dsp_rec_start(dev);
 410                 }
 411                 up(&dev->oss.lock);
 412                 /* fall through */
 413         case SOUND_PCM_READ_CHANNELS:
 414                 return put_user(dev->oss.channels, p);
 415
 416         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 417                 return put_user(AFMT_U8     | AFMT_S8     |
 418                                 AFMT_U16_LE | AFMT_U16_BE |
 419                                 AFMT_S16_LE | AFMT_S16_BE, p);
 420
 421         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 422                 if (get_user(val, p))
 423                         return -EFAULT;
 424                 switch (val) {
 425                 case AFMT_QUERY:
 426                         /* nothing to do */
 427                         break;
 428                 case AFMT_U8:
 429                 case AFMT_S8:
 430                 case AFMT_U16_LE:
 431                 case AFMT_U16_BE:
 432                 case AFMT_S16_LE:
 433                 case AFMT_S16_BE:
 434                         down(&dev->oss.lock);
 435                         dev->oss.afmt = val;
 436                         if (dev->oss.recording_on) {
 437                                 dsp_rec_stop(dev);
 438                                 dsp_rec_start(dev);
 439                         }
 440                         up(&dev->oss.lock);
 441                         return put_user(dev->oss.afmt, p);
 442                 default:
 443                         return -EINVAL;
 444                 }
 445
 446         case SOUND_PCM_READ_BITS:
 447                 switch (dev->oss.afmt) {
 448                 case AFMT_U8:
 449                 case AFMT_S8:
 450                         return put_user(8, p);
 451                 case AFMT_U16_LE:
 452                 case AFMT_U16_BE:
 453                 case AFMT_S16_LE:
 454                 case AFMT_S16_BE:
 455                         return put_user(16, p);
 456                 default:
 457                         return -EINVAL;
 458                 }
 459
 460         case SNDCTL_DSP_NONBLOCK:
 461                 file->f_flags |= O_NONBLOCK;
 462                 return 0;
 463
 464         case SNDCTL_DSP_RESET:
 465                 down(&dev->oss.lock);
 466                 if (dev->oss.recording_on)
 467                         dsp_rec_stop(dev);
 468                 up(&dev->oss.lock);
 469                 return 0;
 470         case SNDCTL_DSP_GETBLKSIZE:
 471                 return put_user(dev->oss.blksize, p);
 472
 473         case SNDCTL_DSP_SETFRAGMENT:
 474                 if (get_user(val, p))
 475                         return -EFAULT;
 476                 if (dev->oss.recording_on)
 477                         return -EBUSY;
 478                 dsp_buffer_free(dev);
 479                 /* used to be arg >> 16 instead of val >> 16; fixed */
 480                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 481                 dsp_buffer_init(dev);
 482                 return 0;
 483
 484         case SNDCTL_DSP_SYNC:
 485                 /* NOP */
 486                 return 0;
 487
 488         case SNDCTL_DSP_GETISPACE:
 489         {
 490                 audio_buf_info info;
 491                 info.fragsize   = dev->oss.blksize;
 492                 info.fragstotal = dev->oss.blocks;
 493                 info.bytes      = dev->oss.read_count;
 494                 info.fragments  = info.bytes / info.fragsize;
 495                 if (copy_to_user(argp, &info, sizeof(info)))
 496                         return -EFAULT;
 497                 return 0;
 498         }
 499         default:
 500                 return -EINVAL;
 501         }
 502 }
 503
 504 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 505 {
 506         struct saa7134_dev *dev = file->private_data;
 507         unsigned int mask = 0;
 508
 509         poll_wait(file, &dev->oss.wq, wait);
 510
 511         if (0 == dev->oss.read_count) {
 512                 down(&dev->oss.lock);
 513                 if (!dev->oss.recording_on)
 514                         dsp_rec_start(dev);
 515                 up(&dev->oss.lock);
 516         } else
 517                 mask |= (POLLIN | POLLRDNORM);
 518         return mask;
 519 }
 520
 521 struct file_operations saa7134_dsp_fops = {
 522         .owner   = THIS_MODULE,
 523         .open    = dsp_open,
 524         .release = dsp_release,
 525         .read    = dsp_read,
 526         .write   = dsp_write,
 527         .ioctl   = dsp_ioctl,
 528         .poll    = dsp_poll,
 529         .llseek  = no_llseek,
 530 };
 531
 532 /* ------------------------------------------------------------------ */
 533
 534 static int
 535 mixer_recsrc_7134(struct saa7134_dev *dev)
 536 {
 537         int analog_io,rate;
 538
 539         switch (dev->oss.input) {
 540         case TV:
 541                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 542                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 543                 break;
 544         case LINE1:
 545         case LINE2:
 546                 analog_io = (LINE1 == dev->oss.input) ? 0x00 : 0x08;
 547                 rate = (32000 == dev->oss.rate) ? 0x01 : 0x03;
 548                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 549                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 550                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 551                 break;
 552         }
 553         return 0;
 554 }
 555
 556 static int
 557 mixer_recsrc_7133(struct saa7134_dev *dev)
 558 {
 559         u32 value = 0xbbbbbb;
 560
 561         switch (dev->oss.input) {
 562         case TV:
 563                 value = 0xbbbb10;  /* MAIN */
 564                 break;
 565         case LINE1:
 566                 value = 0xbbbb32;  /* AUX1 */
 567                 break;
 568         case LINE2:
 569                 value = 0xbbbb54;  /* AUX2 */
 570                 break;
 571         }
 572         saa_dsp_writel(dev, 0x46c >> 2, value);
 573         return 0;
 574 }
 575
 576 static int
 577 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 578 {
 579         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 580
 581         dev->oss.count++;
 582         dev->oss.input = src;
 583         dprintk("mixer input = %s\n",iname[dev->oss.input]);
 584
 585         switch (dev->pci->device) {
 586         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 587                 mixer_recsrc_7134(dev);
 588                 break;
 589         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 590         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 591                 mixer_recsrc_7133(dev);
 592                 break;
 593         }
 594         return 0;
 595 }
 596
 597 static int
 598 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 599 {
 600         switch (dev->pci->device) {
 601         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 602                 switch (src) {
 603                 case TV:
 604                         /* nothing */
 605                         break;
 606                 case LINE1:
 607                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 608                                    (100 == level) ? 0x00 : 0x10);
 609                         break;
 610                 case LINE2:
 611                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 612                                    (100 == level) ? 0x00 : 0x20);
 613                         break;
 614                 }
 615                 break;
 616         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 617         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 618                 /* nothing */
 619                 break;
 620         }
 621         return 0;
 622 }
 623
 624 /* ------------------------------------------------------------------ */
 625
 626 static int mixer_open(struct inode *inode, struct file *file)
 627 {
 628         int minor = iminor(inode);
 629         struct saa7134_dev *h,*dev = NULL;
 630         struct list_head *list;
 631
 632         list_for_each(list,&saa7134_devlist) {
 633                 h = list_entry(list, struct saa7134_dev, devlist);
 634                 if (h->oss.minor_mixer == minor)
 635                         dev = h;
 636         }
 637         if (NULL == dev)
 638                 return -ENODEV;
 639
 640         file->private_data = dev;
 641         return 0;
 642 }
 643
 644 static int mixer_release(struct inode *inode, struct file *file)
 645 {
 646         file->private_data = NULL;
 647         return 0;
 648 }
 649
 650 static int mixer_ioctl(struct inode *inode, struct file *file,
 651                      unsigned int cmd, unsigned long arg)
 652 {
 653         struct saa7134_dev *dev = file->private_data;
 654         enum saa7134_audio_in input;
 655         int val,ret;
 656         void __user *argp = (void __user *) arg;
 657         int __user *p = argp;
 658
 659         if (oss_debug > 1)
 660                 saa7134_print_ioctl(dev->name,cmd);
 661         switch (cmd) {
 662         case OSS_GETVERSION:
 663                 return put_user(SOUND_VERSION, p);
 664         case SOUND_MIXER_INFO:
 665         {
 666                 mixer_info info;
 667                 memset(&info,0,sizeof(info));
 668                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 669                 strlcpy(info.name, dev->name,  sizeof(info.name));
 670                 info.modify_counter = dev->oss.count;
 671                 if (copy_to_user(argp, &info, sizeof(info)))
 672                         return -EFAULT;
 673                 return 0;
 674         }
 675         case SOUND_OLD_MIXER_INFO:
 676         {
 677                 _old_mixer_info info;
 678                 memset(&info,0,sizeof(info));
 679                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 680                 strlcpy(info.name, dev->name,  sizeof(info.name));
 681                 if (copy_to_user(argp, &info, sizeof(info)))
 682                         return -EFAULT;
 683                 return 0;
 684         }
 685         case MIXER_READ(SOUND_MIXER_CAPS):
 686                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 687         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 688                 return put_user(0, p);
 689         case MIXER_READ(SOUND_MIXER_RECMASK):
 690         case MIXER_READ(SOUND_MIXER_DEVMASK):
 691                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 692                 if (32000 == dev->oss.rate)
 693                         val |= SOUND_MASK_VIDEO;
 694                 return put_user(val, p);
 695
 696         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 697                 if (get_user(val, p))
 698                         return -EFAULT;
 699                 input = dev->oss.input;
 700                 if (32000 == dev->oss.rate  &&
 701                     val & SOUND_MASK_VIDEO  &&  dev->oss.input != TV)
 702                         input = TV;
 703                 if (val & SOUND_MASK_LINE1  &&  dev->oss.input != LINE1)
 704                         input = LINE1;
 705                 if (val & SOUND_MASK_LINE2  &&  dev->oss.input != LINE2)
 706                         input = LINE2;
 707                 if (input != dev->oss.input)
 708                         mixer_recsrc(dev,input);
 709                 /* fall throuth */
 710         case MIXER_READ(SOUND_MIXER_RECSRC):
 711                 switch (dev->oss.input) {
 712                 case TV:    ret = SOUND_MASK_VIDEO; break;
 713                 case LINE1: ret = SOUND_MASK_LINE1; break;
 714                 case LINE2: ret = SOUND_MASK_LINE2; break;
 715                 default:    ret = 0;
 716                 }
 717                 return put_user(ret, p);
 718
 719         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 720         case MIXER_READ(SOUND_MIXER_VIDEO):
 721                 if (32000 != dev->oss.rate)
 722                         return -EINVAL;
 723                 return put_user(100 | 100 << 8, p);
 724
 725         case MIXER_WRITE(SOUND_MIXER_LINE1):
 726                 if (get_user(val, p))
 727                         return -EFAULT;
 728                 val &= 0xff;
 729                 val = (val <= 50) ? 50 : 100;
 730                 dev->oss.line1 = val;
 731                 mixer_level(dev,LINE1,dev->oss.line1);
 732                 /* fall throuth */
 733         case MIXER_READ(SOUND_MIXER_LINE1):
 734                 return put_user(dev->oss.line1 | dev->oss.line1 << 8, p);
 735
 736         case MIXER_WRITE(SOUND_MIXER_LINE2):
 737                 if (get_user(val, p))
 738                         return -EFAULT;
 739                 val &= 0xff;
 740                 val = (val <= 50) ? 50 : 100;
 741                 dev->oss.line2 = val;
 742                 mixer_level(dev,LINE2,dev->oss.line2);
 743                 /* fall throuth */
 744         case MIXER_READ(SOUND_MIXER_LINE2):
 745                 return put_user(dev->oss.line2 | dev->oss.line2 << 8, p);
 746
 747         default:
 748                 return -EINVAL;
 749         }
 750 }
 751
 752 struct file_operations saa7134_mixer_fops = {
 753         .owner   = THIS_MODULE,
 754         .open    = mixer_open,
 755         .release = mixer_release,
 756         .ioctl   = mixer_ioctl,
 757         .llseek  = no_llseek,
 758 };
 759
 760 /* ------------------------------------------------------------------ */
 761
 762 int saa7134_oss_init1(struct saa7134_dev *dev)
 763 {
 764         /* general */
 765         init_MUTEX(&dev->oss.lock);
 766         init_waitqueue_head(&dev->oss.wq);
 767
 768         switch (dev->pci->device) {
 769         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 770         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 771                 saa_writel(0x588 >> 2, 0x00000fff);
 772                 saa_writel(0x58c >> 2, 0x00543210);
 773                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 774                 break;
 775         }
 776
 777         /* dsp */
 778         dev->oss.rate = 32000;
 779         if (oss_rate)
 780                 dev->oss.rate = oss_rate;
 781         dev->oss.rate = (dev->oss.rate > 40000) ? 48000 : 32000;
 782
 783         /* mixer */
 784         dev->oss.line1 = 50;
 785         dev->oss.line2 = 50;
 786         mixer_level(dev,LINE1,dev->oss.line1);
 787         mixer_level(dev,LINE2,dev->oss.line2);
 788         mixer_recsrc(dev, (dev->oss.rate == 32000) ? TV : LINE2);
 789
 790         return 0;
 791 }
 792
 793 int saa7134_oss_fini(struct saa7134_dev *dev)
 794 {
 795         /* nothing */
 796         return 0;
 797 }
 798
 799 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 800 {
 801         int next_blk, reg = 0;
 802
 803         spin_lock(&dev->slock);
 804         if (UNSET == dev->oss.dma_blk) {
 805                 dprintk("irq: recording stopped\n");
 806                 goto done;
 807         }
 808         if (0 != (status & 0x0f000000))
 809                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 810         if (0 == (status & 0x10000000)) {
 811                 /* odd */
 812                 if (0 == (dev->oss.dma_blk & 0x01))
 813                         reg = SAA7134_RS_BA1(6);
 814         } else {
 815                 /* even */
 816                 if (0 == (dev->oss.dma_blk & 0x00))
 817                         reg = SAA7134_RS_BA2(6);
 818         }
 819         if (0 == reg) {
 820                 dprintk("irq: field oops [%s]\n",
 821                         (status & 0x10000000) ? "even" : "odd");
 822                 goto done;
 823         }
 824         if (dev->oss.read_count >= dev->oss.blksize * (dev->oss.blocks-2)) {
 825                 dprintk("irq: overrun [full=%d/%d]\n",dev->oss.read_count,
 826                         dev->oss.bufsize);
 827                 dsp_dma_stop(dev);
 828                 goto done;
 829         }
 830
 831         /* next block addr */
 832         next_blk = (dev->oss.dma_blk + 2) % dev->oss.blocks;
 833         saa_writel(reg,next_blk * dev->oss.blksize);
 834         if (oss_debug > 2)
 835                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 836                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 837                         next_blk * dev->oss.blksize);
 838
 839         /* update status & wake waiting readers */
 840         dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks;
 841         dev->oss.read_count += dev->oss.blksize;
 842         wake_up(&dev->oss.wq);
 843
 844  done:
 845         spin_unlock(&dev->slock);
 846 }
 847
 848 /* ----------------------------------------------------------- */
 849 /*
 850  * Local variables:
 851  * c-basic-offset: 8
 852  * End:
 853  */