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

   1 /*
   2  * $Id: saa7134-oss.c,v 1.13 2004/12/10 12:33:39 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/moduleparam.h>
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/soundcard.h>
  31
  32 #include "saa7134-reg.h"
  33 #include "saa7134.h"
  34
  35 /* ------------------------------------------------------------------ */
  36
  37 static unsigned int oss_debug  = 0;
  38 module_param(oss_debug, int, 0644);
  39 MODULE_PARM_DESC(oss_debug,"enable debug messages [oss]");
  40
  41 static unsigned int oss_rate  = 0;
  42 module_param(oss_rate, int, 0444);
  43 MODULE_PARM_DESC(oss_rate,"sample rate (valid are: 32000,48000)");
  44
  45 #define dprintk(fmt, arg...)    if (oss_debug) \
  46         printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)
  47
  48 /* ------------------------------------------------------------------ */
  49
  50 static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
  51 {
  52         blksize &= ~0xff;
  53         if (blksize < 0x100)
  54                 blksize = 0x100;
  55         if (blksize > 0x10000)
  56                 blksize = 0x10000;
  57
  58         if (blocks < 2)
  59                 blocks = 2;
  60         while ((blksize * blocks) & ~PAGE_MASK)
  61                 blocks++;
  62         if ((blksize * blocks) > 1024*1024)
  63                 blocks = 1024*1024 / blksize;
  64
  65         dev->oss.blocks  = blocks;
  66         dev->oss.blksize = blksize;
  67         dev->oss.bufsize = blksize * blocks;
  68
  69         dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
  70                 blocks,blksize,blksize * blocks / 1024);
  71         return 0;
  72 }
  73
  74 static int dsp_buffer_init(struct saa7134_dev *dev)
  75 {
  76         int err;
  77
  78         if (!dev->oss.bufsize)
  79                 BUG();
  80         videobuf_dma_init(&dev->oss.dma);
  81         err = videobuf_dma_init_kernel(&dev->oss.dma, PCI_DMA_FROMDEVICE,
  82                                        dev->oss.bufsize >> PAGE_SHIFT);
  83         if (0 != err)
  84                 return err;
  85         return 0;
  86 }
  87
  88 static int dsp_buffer_free(struct saa7134_dev *dev)
  89 {
  90         if (!dev->oss.blksize)
  91                 BUG();
  92         videobuf_dma_free(&dev->oss.dma);
  93         dev->oss.blocks  = 0;
  94         dev->oss.blksize = 0;
  95         dev->oss.bufsize = 0;
  96         return 0;
  97 }
  98
  99 static void dsp_dma_start(struct saa7134_dev *dev)
 100 {
 101         dev->oss.dma_blk     = 0;
 102         dev->oss.dma_running = 1;
 103         saa7134_set_dmabits(dev);
 104 }
 105
 106 static void dsp_dma_stop(struct saa7134_dev *dev)
 107 {
 108         dev->oss.dma_blk     = -1;
 109         dev->oss.dma_running = 0;
 110         saa7134_set_dmabits(dev);
 111 }
 112
 113 static int dsp_rec_start(struct saa7134_dev *dev)
 114 {
 115         int err, bswap, sign;
 116         u32 fmt, control;
 117         unsigned long flags;
 118
 119         /* prepare buffer */
 120         if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->oss.dma)))
 121                 return err;
 122         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->oss.pt)))
 123                 goto fail1;
 124         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->oss.pt,
 125                                               dev->oss.dma.sglist,
 126                                               dev->oss.dma.sglen,
 127                                               0)))
 128                 goto fail2;
 129
 130         /* sample format */
 131         switch (dev->oss.afmt) {
 132         case AFMT_U8:
 133         case AFMT_S8:     fmt = 0x00;  break;
 134         case AFMT_U16_LE:
 135         case AFMT_U16_BE:
 136         case AFMT_S16_LE:
 137         case AFMT_S16_BE: fmt = 0x01;  break;
 138         default:
 139                 err = -EINVAL;
 140                 goto fail2;
 141         }
 142
 143         switch (dev->oss.afmt) {
 144         case AFMT_S8:
 145         case AFMT_S16_LE:
 146         case AFMT_S16_BE: sign = 1; break;
 147         default:          sign = 0; break;
 148         }
 149
 150         switch (dev->oss.afmt) {
 151         case AFMT_U16_BE:
 152         case AFMT_S16_BE: bswap = 1; break;
 153         default:          bswap = 0; break;
 154         }
 155
 156         switch (dev->pci->device) {
 157         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 158                 if (1 == dev->oss.channels)
 159                         fmt |= (1 << 3);
 160                 if (2 == dev->oss.channels)
 161                         fmt |= (3 << 3);
 162                 if (sign)
 163                         fmt |= 0x04;
 164                 fmt |= (TV == dev->oss.input) ? 0xc0 : 0x80;
 165
 166                 saa_writeb(SAA7134_NUM_SAMPLES0, (dev->oss.blksize & 0x0000ff));
 167                 saa_writeb(SAA7134_NUM_SAMPLES1, (dev->oss.blksize & 0x00ff00) >>  8);
 168                 saa_writeb(SAA7134_NUM_SAMPLES2, (dev->oss.blksize & 0xff0000) >> 16);
 169                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
 170                 break;
 171         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 172         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 173                 if (1 == dev->oss.channels)
 174                         fmt |= (1 << 4);
 175                 if (2 == dev->oss.channels)
 176                         fmt |= (2 << 4);
 177                 if (!sign)
 178                         fmt |= 0x04;
 179                 saa_writel(0x588 >> 2, dev->oss.blksize -4);
 180                 saa_writel(0x58c >> 2, 0x543210 | (fmt << 24));
 181                 break;
 182         }
 183         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
 184                 dev->oss.afmt, dev->oss.channels, fmt,
 185                 bswap ? 'b' : '-');
 186
 187         /* dma: setup channel 6 (= AUDIO) */
 188         control = SAA7134_RS_CONTROL_BURST_16 |
 189                 SAA7134_RS_CONTROL_ME |
 190                 (dev->oss.pt.dma >> 12);
 191         if (bswap)
 192                 control |= SAA7134_RS_CONTROL_BSWAP;
 193         saa_writel(SAA7134_RS_BA1(6),0);
 194         saa_writel(SAA7134_RS_BA2(6),dev->oss.blksize);
 195         saa_writel(SAA7134_RS_PITCH(6),0);
 196         saa_writel(SAA7134_RS_CONTROL(6),control);
 197
 198         /* start dma */
 199         dev->oss.recording_on = 1;
 200         spin_lock_irqsave(&dev->slock,flags);
 201         dsp_dma_start(dev);
 202         spin_unlock_irqrestore(&dev->slock,flags);
 203         return 0;
 204
 205  fail2:
 206         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 207  fail1:
 208         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 209         return err;
 210 }
 211
 212 static int dsp_rec_stop(struct saa7134_dev *dev)
 213 {
 214         unsigned long flags;
 215
 216         dprintk("rec_stop dma_blk=%d\n",dev->oss.dma_blk);
 217
 218         /* stop dma */
 219         dev->oss.recording_on = 0;
 220         spin_lock_irqsave(&dev->slock,flags);
 221         dsp_dma_stop(dev);
 222         spin_unlock_irqrestore(&dev->slock,flags);
 223
 224         /* unlock buffer */
 225         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 226         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 227         return 0;
 228 }
 229
 230 /* ------------------------------------------------------------------ */
 231
 232 static int dsp_open(struct inode *inode, struct file *file)
 233 {
 234         int minor = iminor(inode);
 235         struct saa7134_dev *h,*dev = NULL;
 236         struct list_head *list;
 237         int err;
 238
 239         list_for_each(list,&saa7134_devlist) {
 240                 h = list_entry(list, struct saa7134_dev, devlist);
 241                 if (h->oss.minor_dsp == minor)
 242                         dev = h;
 243         }
 244         if (NULL == dev)
 245                 return -ENODEV;
 246
 247         down(&dev->oss.lock);
 248         err = -EBUSY;
 249         if (dev->oss.users_dsp)
 250                 goto fail1;
 251         dev->oss.users_dsp++;
 252         file->private_data = dev;
 253
 254         dev->oss.afmt        = AFMT_U8;
 255         dev->oss.channels    = 1;
 256         dev->oss.read_count  = 0;
 257         dev->oss.read_offset = 0;
 258         dsp_buffer_conf(dev,PAGE_SIZE,64);
 259         err = dsp_buffer_init(dev);
 260         if (0 != err)
 261                 goto fail2;
 262
 263         up(&dev->oss.lock);
 264         return 0;
 265
 266  fail2:
 267         dev->oss.users_dsp--;
 268  fail1:
 269         up(&dev->oss.lock);
 270         return err;
 271 }
 272
 273 static int dsp_release(struct inode *inode, struct file *file)
 274 {
 275         struct saa7134_dev *dev = file->private_data;
 276
 277         down(&dev->oss.lock);
 278         if (dev->oss.recording_on)
 279                 dsp_rec_stop(dev);
 280         dsp_buffer_free(dev);
 281         dev->oss.users_dsp--;
 282         file->private_data = NULL;
 283         up(&dev->oss.lock);
 284         return 0;
 285 }
 286
 287 static ssize_t dsp_read(struct file *file, char __user *buffer,
 288                         size_t count, loff_t *ppos)
 289 {
 290         struct saa7134_dev *dev = file->private_data;
 291         DECLARE_WAITQUEUE(wait, current);
 292         unsigned int bytes;
 293         unsigned long flags;
 294         int err,ret = 0;
 295
 296         add_wait_queue(&dev->oss.wq, &wait);
 297         down(&dev->oss.lock);
 298         while (count > 0) {
 299                 /* wait for data if needed */
 300                 if (0 == dev->oss.read_count) {
 301                         if (!dev->oss.recording_on) {
 302                                 err = dsp_rec_start(dev);
 303                                 if (err < 0) {
 304                                         if (0 == ret)
 305                                                 ret = err;
 306                                         break;
 307                                 }
 308                         }
 309                         if (dev->oss.recording_on &&
 310                             !dev->oss.dma_running) {
 311                                 /* recover from overruns */
 312                                 spin_lock_irqsave(&dev->slock,flags);
 313                                 dsp_dma_start(dev);
 314                                 spin_unlock_irqrestore(&dev->slock,flags);
 315                         }
 316                         if (file->f_flags & O_NONBLOCK) {
 317                                 if (0 == ret)
 318                                         ret = -EAGAIN;
 319                                 break;
 320                         }
 321                         up(&dev->oss.lock);
 322                         set_current_state(TASK_INTERRUPTIBLE);
 323                         if (0 == dev->oss.read_count)
 324                                 schedule();
 325                         set_current_state(TASK_RUNNING);
 326                         down(&dev->oss.lock);
 327                         if (signal_pending(current)) {
 328                                 if (0 == ret)
 329                                         ret = -EINTR;
 330                                 break;
 331                         }
 332                 }
 333
 334                 /* copy data to userspace */
 335                 bytes = count;
 336                 if (bytes > dev->oss.read_count)
 337                         bytes = dev->oss.read_count;
 338                 if (bytes > dev->oss.bufsize - dev->oss.read_offset)
 339                         bytes = dev->oss.bufsize - dev->oss.read_offset;
 340                 if (copy_to_user(buffer + ret,
 341                                  dev->oss.dma.vmalloc + dev->oss.read_offset,
 342                                  bytes)) {
 343                         if (0 == ret)
 344                                 ret = -EFAULT;
 345                         break;
 346                 }
 347
 348                 ret   += bytes;
 349                 count -= bytes;
 350                 dev->oss.read_count  -= bytes;
 351                 dev->oss.read_offset += bytes;
 352                 if (dev->oss.read_offset == dev->oss.bufsize)
 353                         dev->oss.read_offset = 0;
 354         }
 355         up(&dev->oss.lock);
 356         remove_wait_queue(&dev->oss.wq, &wait);
 357         return ret;
 358 }
 359
 360 static ssize_t dsp_write(struct file *file, const char __user *buffer,
 361                          size_t count, loff_t *ppos)
 362 {
 363         return -EINVAL;
 364 }
 365
 366 static int dsp_ioctl(struct inode *inode, struct file *file,
 367                      unsigned int cmd, unsigned long arg)
 368 {
 369         struct saa7134_dev *dev = file->private_data;
 370         void __user *argp = (void __user *) arg;
 371         int __user *p = argp;
 372         int val = 0;
 373
 374         if (oss_debug > 1)
 375                 saa7134_print_ioctl(dev->name,cmd);
 376         switch (cmd) {
 377         case OSS_GETVERSION:
 378                 return put_user(SOUND_VERSION, p);
 379         case SNDCTL_DSP_GETCAPS:
 380                 return 0;
 381
 382         case SNDCTL_DSP_SPEED:
 383                 if (get_user(val, p))
 384                         return -EFAULT;
 385                 /* fall through */
 386         case SOUND_PCM_READ_RATE:
 387                 return put_user(dev->oss.rate, p);
 388
 389         case SNDCTL_DSP_STEREO:
 390                 if (get_user(val, p))
 391                         return -EFAULT;
 392                 down(&dev->oss.lock);
 393                 dev->oss.channels = val ? 2 : 1;
 394                 if (dev->oss.recording_on) {
 395                         dsp_rec_stop(dev);
 396                         dsp_rec_start(dev);
 397                 }
 398                 up(&dev->oss.lock);
 399                 return put_user(dev->oss.channels-1, p);
 400
 401         case SNDCTL_DSP_CHANNELS:
 402                 if (get_user(val, p))
 403                         return -EFAULT;
 404                 if (val != 1 && val != 2)
 405                         return -EINVAL;
 406                 down(&dev->oss.lock);
 407                 dev->oss.channels = val;
 408                 if (dev->oss.recording_on) {
 409                         dsp_rec_stop(dev);
 410                         dsp_rec_start(dev);
 411                 }
 412                 up(&dev->oss.lock);
 413                 /* fall through */
 414         case SOUND_PCM_READ_CHANNELS:
 415                 return put_user(dev->oss.channels, p);
 416
 417         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 418                 return put_user(AFMT_U8     | AFMT_S8     |
 419                                 AFMT_U16_LE | AFMT_U16_BE |
 420                                 AFMT_S16_LE | AFMT_S16_BE, p);
 421
 422         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 423                 if (get_user(val, p))
 424                         return -EFAULT;
 425                 switch (val) {
 426                 case AFMT_QUERY:
 427                         /* nothing to do */
 428                         break;
 429                 case AFMT_U8:
 430                 case AFMT_S8:
 431                 case AFMT_U16_LE:
 432                 case AFMT_U16_BE:
 433                 case AFMT_S16_LE:
 434                 case AFMT_S16_BE:
 435                         down(&dev->oss.lock);
 436                         dev->oss.afmt = val;
 437                         if (dev->oss.recording_on) {
 438                                 dsp_rec_stop(dev);
 439                                 dsp_rec_start(dev);
 440                         }
 441                         up(&dev->oss.lock);
 442                         return put_user(dev->oss.afmt, p);
 443                 default:
 444                         return -EINVAL;
 445                 }
 446
 447         case SOUND_PCM_READ_BITS:
 448                 switch (dev->oss.afmt) {
 449                 case AFMT_U8:
 450                 case AFMT_S8:
 451                         return put_user(8, p);
 452                 case AFMT_U16_LE:
 453                 case AFMT_U16_BE:
 454                 case AFMT_S16_LE:
 455                 case AFMT_S16_BE:
 456                         return put_user(16, p);
 457                 default:
 458                         return -EINVAL;
 459                 }
 460
 461         case SNDCTL_DSP_NONBLOCK:
 462                 file->f_flags |= O_NONBLOCK;
 463                 return 0;
 464
 465         case SNDCTL_DSP_RESET:
 466                 down(&dev->oss.lock);
 467                 if (dev->oss.recording_on)
 468                         dsp_rec_stop(dev);
 469                 up(&dev->oss.lock);
 470                 return 0;
 471         case SNDCTL_DSP_GETBLKSIZE:
 472                 return put_user(dev->oss.blksize, p);
 473
 474         case SNDCTL_DSP_SETFRAGMENT:
 475                 if (get_user(val, p))
 476                         return -EFAULT;
 477                 if (dev->oss.recording_on)
 478                         return -EBUSY;
 479                 dsp_buffer_free(dev);
 480                 /* used to be arg >> 16 instead of val >> 16; fixed */
 481                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 482                 dsp_buffer_init(dev);
 483                 return 0;
 484
 485         case SNDCTL_DSP_SYNC:
 486                 /* NOP */
 487                 return 0;
 488
 489         case SNDCTL_DSP_GETISPACE:
 490         {
 491                 audio_buf_info info;
 492                 info.fragsize   = dev->oss.blksize;
 493                 info.fragstotal = dev->oss.blocks;
 494                 info.bytes      = dev->oss.read_count;
 495                 info.fragments  = info.bytes / info.fragsize;
 496                 if (copy_to_user(argp, &info, sizeof(info)))
 497                         return -EFAULT;
 498                 return 0;
 499         }
 500         default:
 501                 return -EINVAL;
 502         }
 503 }
 504
 505 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 506 {
 507         struct saa7134_dev *dev = file->private_data;
 508         unsigned int mask = 0;
 509
 510         poll_wait(file, &dev->oss.wq, wait);
 511
 512         if (0 == dev->oss.read_count) {
 513                 down(&dev->oss.lock);
 514                 if (!dev->oss.recording_on)
 515                         dsp_rec_start(dev);
 516                 up(&dev->oss.lock);
 517         } else
 518                 mask |= (POLLIN | POLLRDNORM);
 519         return mask;
 520 }
 521
 522 struct file_operations saa7134_dsp_fops = {
 523         .owner   = THIS_MODULE,
 524         .open    = dsp_open,
 525         .release = dsp_release,
 526         .read    = dsp_read,
 527         .write   = dsp_write,
 528         .ioctl   = dsp_ioctl,
 529         .poll    = dsp_poll,
 530         .llseek  = no_llseek,
 531 };
 532
 533 /* ------------------------------------------------------------------ */
 534
 535 static int
 536 mixer_recsrc_7134(struct saa7134_dev *dev)
 537 {
 538         int analog_io,rate;
 539
 540         switch (dev->oss.input) {
 541         case TV:
 542                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 543                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 544                 break;
 545         case LINE1:
 546         case LINE2:
 547         case LINE2_LEFT:
 548                 analog_io = (LINE1 == dev->oss.input) ? 0x00 : 0x08;
 549                 rate = (32000 == dev->oss.rate) ? 0x01 : 0x03;
 550                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 551                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 552                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 553                 break;
 554         }
 555         return 0;
 556 }
 557
 558 static int
 559 mixer_recsrc_7133(struct saa7134_dev *dev)
 560 {
 561         u32 value = 0xbbbbbb;
 562
 563         switch (dev->oss.input) {
 564         case TV:
 565                 value = 0xbbbb10;  /* MAIN */
 566                 break;
 567         case LINE1:
 568                 value = 0xbbbb32;  /* AUX1 */
 569                 break;
 570         case LINE2:
 571         case LINE2_LEFT:
 572                 value = 0xbbbb54;  /* AUX2 */
 573                 break;
 574         }
 575         saa_dsp_writel(dev, 0x46c >> 2, value);
 576         return 0;
 577 }
 578
 579 static int
 580 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 581 {
 582         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 583
 584         dev->oss.count++;
 585         dev->oss.input = src;
 586         dprintk("mixer input = %s\n",iname[dev->oss.input]);
 587
 588         switch (dev->pci->device) {
 589         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 590                 mixer_recsrc_7134(dev);
 591                 break;
 592         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 593         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 594                 mixer_recsrc_7133(dev);
 595                 break;
 596         }
 597         return 0;
 598 }
 599
 600 static int
 601 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 602 {
 603         switch (dev->pci->device) {
 604         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 605                 switch (src) {
 606                 case TV:
 607                         /* nothing */
 608                         break;
 609                 case LINE1:
 610                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 611                                    (100 == level) ? 0x00 : 0x10);
 612                         break;
 613                 case LINE2:
 614                 case LINE2_LEFT:
 615                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 616                                    (100 == level) ? 0x00 : 0x20);
 617                         break;
 618                 }
 619                 break;
 620         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 621         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 622                 /* nothing */
 623                 break;
 624         }
 625         return 0;
 626 }
 627
 628 /* ------------------------------------------------------------------ */
 629
 630 static int mixer_open(struct inode *inode, struct file *file)
 631 {
 632         int minor = iminor(inode);
 633         struct saa7134_dev *h,*dev = NULL;
 634         struct list_head *list;
 635
 636         list_for_each(list,&saa7134_devlist) {
 637                 h = list_entry(list, struct saa7134_dev, devlist);
 638                 if (h->oss.minor_mixer == minor)
 639                         dev = h;
 640         }
 641         if (NULL == dev)
 642                 return -ENODEV;
 643
 644         file->private_data = dev;
 645         return 0;
 646 }
 647
 648 static int mixer_release(struct inode *inode, struct file *file)
 649 {
 650         file->private_data = NULL;
 651         return 0;
 652 }
 653
 654 static int mixer_ioctl(struct inode *inode, struct file *file,
 655                      unsigned int cmd, unsigned long arg)
 656 {
 657         struct saa7134_dev *dev = file->private_data;
 658         enum saa7134_audio_in input;
 659         int val,ret;
 660         void __user *argp = (void __user *) arg;
 661         int __user *p = argp;
 662
 663         if (oss_debug > 1)
 664                 saa7134_print_ioctl(dev->name,cmd);
 665         switch (cmd) {
 666         case OSS_GETVERSION:
 667                 return put_user(SOUND_VERSION, p);
 668         case SOUND_MIXER_INFO:
 669         {
 670                 mixer_info info;
 671                 memset(&info,0,sizeof(info));
 672                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 673                 strlcpy(info.name, dev->name,  sizeof(info.name));
 674                 info.modify_counter = dev->oss.count;
 675                 if (copy_to_user(argp, &info, sizeof(info)))
 676                         return -EFAULT;
 677                 return 0;
 678         }
 679         case SOUND_OLD_MIXER_INFO:
 680         {
 681                 _old_mixer_info info;
 682                 memset(&info,0,sizeof(info));
 683                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 684                 strlcpy(info.name, dev->name,  sizeof(info.name));
 685                 if (copy_to_user(argp, &info, sizeof(info)))
 686                         return -EFAULT;
 687                 return 0;
 688         }
 689         case MIXER_READ(SOUND_MIXER_CAPS):
 690                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 691         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 692                 return put_user(0, p);
 693         case MIXER_READ(SOUND_MIXER_RECMASK):
 694         case MIXER_READ(SOUND_MIXER_DEVMASK):
 695                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 696                 if (32000 == dev->oss.rate)
 697                         val |= SOUND_MASK_VIDEO;
 698                 return put_user(val, p);
 699
 700         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 701                 if (get_user(val, p))
 702                         return -EFAULT;
 703                 input = dev->oss.input;
 704                 if (32000 == dev->oss.rate  &&
 705                     val & SOUND_MASK_VIDEO  &&  dev->oss.input != TV)
 706                         input = TV;
 707                 if (val & SOUND_MASK_LINE1  &&  dev->oss.input != LINE1)
 708                         input = LINE1;
 709                 if (val & SOUND_MASK_LINE2  &&  dev->oss.input != LINE2)
 710                         input = LINE2;
 711                 if (input != dev->oss.input)
 712                         mixer_recsrc(dev,input);
 713                 /* fall throuth */
 714         case MIXER_READ(SOUND_MIXER_RECSRC):
 715                 switch (dev->oss.input) {
 716                 case TV:    ret = SOUND_MASK_VIDEO; break;
 717                 case LINE1: ret = SOUND_MASK_LINE1; break;
 718                 case LINE2: ret = SOUND_MASK_LINE2; break;
 719                 default:    ret = 0;
 720                 }
 721                 return put_user(ret, p);
 722
 723         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 724         case MIXER_READ(SOUND_MIXER_VIDEO):
 725                 if (32000 != dev->oss.rate)
 726                         return -EINVAL;
 727                 return put_user(100 | 100 << 8, p);
 728
 729         case MIXER_WRITE(SOUND_MIXER_LINE1):
 730                 if (get_user(val, p))
 731                         return -EFAULT;
 732                 val &= 0xff;
 733                 val = (val <= 50) ? 50 : 100;
 734                 dev->oss.line1 = val;
 735                 mixer_level(dev,LINE1,dev->oss.line1);
 736                 /* fall throuth */
 737         case MIXER_READ(SOUND_MIXER_LINE1):
 738                 return put_user(dev->oss.line1 | dev->oss.line1 << 8, p);
 739
 740         case MIXER_WRITE(SOUND_MIXER_LINE2):
 741                 if (get_user(val, p))
 742                         return -EFAULT;
 743                 val &= 0xff;
 744                 val = (val <= 50) ? 50 : 100;
 745                 dev->oss.line2 = val;
 746                 mixer_level(dev,LINE2,dev->oss.line2);
 747                 /* fall throuth */
 748         case MIXER_READ(SOUND_MIXER_LINE2):
 749                 return put_user(dev->oss.line2 | dev->oss.line2 << 8, p);
 750
 751         default:
 752                 return -EINVAL;
 753         }
 754 }
 755
 756 struct file_operations saa7134_mixer_fops = {
 757         .owner   = THIS_MODULE,
 758         .open    = mixer_open,
 759         .release = mixer_release,
 760         .ioctl   = mixer_ioctl,
 761         .llseek  = no_llseek,
 762 };
 763
 764 /* ------------------------------------------------------------------ */
 765
 766 int saa7134_oss_init1(struct saa7134_dev *dev)
 767 {
 768         /* general */
 769         init_MUTEX(&dev->oss.lock);
 770         init_waitqueue_head(&dev->oss.wq);
 771
 772         switch (dev->pci->device) {
 773         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 774         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 775                 saa_writel(0x588 >> 2, 0x00000fff);
 776                 saa_writel(0x58c >> 2, 0x00543210);
 777                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 778                 break;
 779         }
 780
 781         /* dsp */
 782         dev->oss.rate = 32000;
 783         if (oss_rate)
 784                 dev->oss.rate = oss_rate;
 785         dev->oss.rate = (dev->oss.rate > 40000) ? 48000 : 32000;
 786
 787         /* mixer */
 788         dev->oss.line1 = 50;
 789         dev->oss.line2 = 50;
 790         mixer_level(dev,LINE1,dev->oss.line1);
 791         mixer_level(dev,LINE2,dev->oss.line2);
 792         mixer_recsrc(dev, (dev->oss.rate == 32000) ? TV : LINE2);
 793
 794         return 0;
 795 }
 796
 797 int saa7134_oss_fini(struct saa7134_dev *dev)
 798 {
 799         /* nothing */
 800         return 0;
 801 }
 802
 803 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 804 {
 805         int next_blk, reg = 0;
 806
 807         spin_lock(&dev->slock);
 808         if (UNSET == dev->oss.dma_blk) {
 809                 dprintk("irq: recording stopped\n");
 810                 goto done;
 811         }
 812         if (0 != (status & 0x0f000000))
 813                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 814         if (0 == (status & 0x10000000)) {
 815                 /* odd */
 816                 if (0 == (dev->oss.dma_blk & 0x01))
 817                         reg = SAA7134_RS_BA1(6);
 818         } else {
 819                 /* even */
 820                 if (0 == (dev->oss.dma_blk & 0x00))
 821                         reg = SAA7134_RS_BA2(6);
 822         }
 823         if (0 == reg) {
 824                 dprintk("irq: field oops [%s]\n",
 825                         (status & 0x10000000) ? "even" : "odd");
 826                 goto done;
 827         }
 828         if (dev->oss.read_count >= dev->oss.blksize * (dev->oss.blocks-2)) {
 829                 dprintk("irq: overrun [full=%d/%d]\n",dev->oss.read_count,
 830                         dev->oss.bufsize);
 831                 dsp_dma_stop(dev);
 832                 goto done;
 833         }
 834
 835         /* next block addr */
 836         next_blk = (dev->oss.dma_blk + 2) % dev->oss.blocks;
 837         saa_writel(reg,next_blk * dev->oss.blksize);
 838         if (oss_debug > 2)
 839                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 840                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 841                         next_blk * dev->oss.blksize);
 842
 843         /* update status & wake waiting readers */
 844         dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks;
 845         dev->oss.read_count += dev->oss.blksize;
 846         wake_up(&dev->oss.wq);
 847
 848  done:
 849         spin_unlock(&dev->slock);
 850 }
 851
 852 /* ----------------------------------------------------------- */
 853 /*
 854  * Local variables:
 855  * c-basic-offset: 8
 856  * End:
 857  */