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  *     2005 conversion to standalone module:
   8  *         Ricardo Cerqueira <v4l@cerqueira.org>
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include <linux/init.h>
  26 #include <linux/list.h>
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/slab.h>
  31 #include <linux/sound.h>
  32 #include <linux/soundcard.h>
  33
  34 #include "saa7134-reg.h"
  35 #include "saa7134.h"
  36
  37 /* ------------------------------------------------------------------ */
  38
  39 static unsigned int debug  = 0;
  40 module_param(debug, int, 0644);
  41 MODULE_PARM_DESC(debug,"enable debug messages [oss]");
  42
  43 static unsigned int rate  = 0;
  44 module_param(rate, int, 0444);
  45 MODULE_PARM_DESC(rate,"sample rate (valid are: 32000,48000)");
  46
  47 static unsigned int dsp_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  48 MODULE_PARM_DESC(dsp_nr, "device numbers for SAA7134 capture interface(s).");
  49 module_param_array(dsp_nr,   int, NULL, 0444);
  50
  51 static unsigned int mixer_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  52 MODULE_PARM_DESC(mixer_nr, "mixer numbers for SAA7134 capture interface(s).");
  53 module_param_array(mixer_nr, int, NULL, 0444);
  54
  55 #define dprintk(fmt, arg...)    if (debug) \
  56         printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)
  57
  58
  59 /* ------------------------------------------------------------------ */
  60
  61 static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
  62 {
  63         if (blksize < 0x100)
  64                 blksize = 0x100;
  65         if (blksize > 0x10000)
  66                 blksize = 0x10000;
  67
  68         if (blocks < 2)
  69                 blocks = 2;
  70         if ((blksize * blocks) > 1024*1024)
  71                 blocks = 1024*1024 / blksize;
  72
  73         dev->dmasound.blocks  = blocks;
  74         dev->dmasound.blksize = blksize;
  75         dev->dmasound.bufsize = blksize * blocks;
  76
  77         dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
  78                 blocks,blksize,blksize * blocks / 1024);
  79         return 0;
  80 }
  81
  82 static int dsp_buffer_init(struct saa7134_dev *dev)
  83 {
  84         int err;
  85
  86         BUG_ON(!dev->dmasound.bufsize);
  87         videobuf_dma_init(&dev->dmasound.dma);
  88         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
  89                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
  90         if (0 != err)
  91                 return err;
  92         return 0;
  93 }
  94
  95 static int dsp_buffer_free(struct saa7134_dev *dev)
  96 {
  97         BUG_ON(!dev->dmasound.blksize);
  98         videobuf_dma_free(&dev->dmasound.dma);
  99         dev->dmasound.blocks  = 0;
 100         dev->dmasound.blksize = 0;
 101         dev->dmasound.bufsize = 0;
 102         return 0;
 103 }
 104
 105 static void dsp_dma_start(struct saa7134_dev *dev)
 106 {
 107         dev->dmasound.dma_blk     = 0;
 108         dev->dmasound.dma_running = 1;
 109         saa7134_set_dmabits(dev);
 110 }
 111
 112 static void dsp_dma_stop(struct saa7134_dev *dev)
 113 {
 114         dev->dmasound.dma_blk     = -1;
 115         dev->dmasound.dma_running = 0;
 116         saa7134_set_dmabits(dev);
 117 }
 118
 119 static int dsp_rec_start(struct saa7134_dev *dev)
 120 {
 121         int err, bswap, sign;
 122         u32 fmt, control;
 123         unsigned long flags;
 124
 125         /* prepare buffer */
 126         if (0 != (err = videobuf_pci_dma_map(dev->pci,&dev->dmasound.dma)))
 127                 return err;
 128         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt)))
 129                 goto fail1;
 130         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
 131                                               dev->dmasound.dma.sglist,
 132                                               dev->dmasound.dma.sglen,
 133                                               0)))
 134                 goto fail2;
 135
 136         /* sample format */
 137         switch (dev->dmasound.afmt) {
 138         case AFMT_U8:
 139         case AFMT_S8:     fmt = 0x00;  break;
 140         case AFMT_U16_LE:
 141         case AFMT_U16_BE:
 142         case AFMT_S16_LE:
 143         case AFMT_S16_BE: fmt = 0x01;  break;
 144         default:
 145                 err = -EINVAL;
 146                 goto fail2;
 147         }
 148
 149         switch (dev->dmasound.afmt) {
 150         case AFMT_S8:
 151         case AFMT_S16_LE:
 152         case AFMT_S16_BE: sign = 1; break;
 153         default:          sign = 0; break;
 154         }
 155
 156         switch (dev->dmasound.afmt) {
 157         case AFMT_U16_BE:
 158         case AFMT_S16_BE: bswap = 1; break;
 159         default:          bswap = 0; break;
 160         }
 161
 162         switch (dev->pci->device) {
 163         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 164                 if (1 == dev->dmasound.channels)
 165                         fmt |= (1 << 3);
 166                 if (2 == dev->dmasound.channels)
 167                         fmt |= (3 << 3);
 168                 if (sign)
 169                         fmt |= 0x04;
 170                 fmt |= (TV == dev->dmasound.input) ? 0xc0 : 0x80;
 171
 172                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
 173                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
 174                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
 175                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
 176
 177                 break;
 178         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 179         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 180                 if (1 == dev->dmasound.channels)
 181                         fmt |= (1 << 4);
 182                 if (2 == dev->dmasound.channels)
 183                         fmt |= (2 << 4);
 184                 if (!sign)
 185                         fmt |= 0x04;
 186                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -4);
 187                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
 188                 break;
 189         }
 190         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
 191                 dev->dmasound.afmt, dev->dmasound.channels, fmt,
 192                 bswap ? 'b' : '-');
 193
 194         /* dma: setup channel 6 (= AUDIO) */
 195         control = SAA7134_RS_CONTROL_BURST_16 |
 196                 SAA7134_RS_CONTROL_ME |
 197                 (dev->dmasound.pt.dma >> 12);
 198         if (bswap)
 199                 control |= SAA7134_RS_CONTROL_BSWAP;
 200         saa_writel(SAA7134_RS_BA1(6),0);
 201         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
 202         saa_writel(SAA7134_RS_PITCH(6),0);
 203         saa_writel(SAA7134_RS_CONTROL(6),control);
 204
 205         /* start dma */
 206         dev->dmasound.recording_on = 1;
 207         spin_lock_irqsave(&dev->slock,flags);
 208         dsp_dma_start(dev);
 209         spin_unlock_irqrestore(&dev->slock,flags);
 210         return 0;
 211
 212  fail2:
 213         saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
 214  fail1:
 215         videobuf_pci_dma_unmap(dev->pci,&dev->dmasound.dma);
 216         return err;
 217 }
 218
 219 static int dsp_rec_stop(struct saa7134_dev *dev)
 220 {
 221         unsigned long flags;
 222
 223         dprintk("rec_stop dma_blk=%d\n",dev->dmasound.dma_blk);
 224
 225         /* stop dma */
 226         dev->dmasound.recording_on = 0;
 227         spin_lock_irqsave(&dev->slock,flags);
 228         dsp_dma_stop(dev);
 229         spin_unlock_irqrestore(&dev->slock,flags);
 230
 231         /* unlock buffer */
 232         saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
 233         videobuf_pci_dma_unmap(dev->pci,&dev->dmasound.dma);
 234         return 0;
 235 }
 236
 237 /* ------------------------------------------------------------------ */
 238
 239 static int dsp_open(struct inode *inode, struct file *file)
 240 {
 241         int minor = iminor(inode);
 242         struct saa7134_dev *dev;
 243         int err;
 244
 245         list_for_each_entry(dev, &saa7134_devlist, devlist)
 246                 if (dev->dmasound.minor_dsp == minor)
 247                         goto found;
 248         return -ENODEV;
 249  found:
 250
 251         mutex_lock(&dev->dmasound.lock);
 252         err = -EBUSY;
 253         if (dev->dmasound.users_dsp)
 254                 goto fail1;
 255         dev->dmasound.users_dsp++;
 256         file->private_data = dev;
 257
 258         dev->dmasound.afmt        = AFMT_U8;
 259         dev->dmasound.channels    = 1;
 260         dev->dmasound.read_count  = 0;
 261         dev->dmasound.read_offset = 0;
 262         dsp_buffer_conf(dev,PAGE_SIZE,64);
 263         err = dsp_buffer_init(dev);
 264         if (0 != err)
 265                 goto fail2;
 266
 267         mutex_unlock(&dev->dmasound.lock);
 268         return 0;
 269
 270  fail2:
 271         dev->dmasound.users_dsp--;
 272  fail1:
 273         mutex_unlock(&dev->dmasound.lock);
 274         return err;
 275 }
 276
 277 static int dsp_release(struct inode *inode, struct file *file)
 278 {
 279         struct saa7134_dev *dev = file->private_data;
 280
 281         mutex_lock(&dev->dmasound.lock);
 282         if (dev->dmasound.recording_on)
 283                 dsp_rec_stop(dev);
 284         dsp_buffer_free(dev);
 285         dev->dmasound.users_dsp--;
 286         file->private_data = NULL;
 287         mutex_unlock(&dev->dmasound.lock);
 288         return 0;
 289 }
 290
 291 static ssize_t dsp_read(struct file *file, char __user *buffer,
 292                         size_t count, loff_t *ppos)
 293 {
 294         struct saa7134_dev *dev = file->private_data;
 295         DECLARE_WAITQUEUE(wait, current);
 296         unsigned int bytes;
 297         unsigned long flags;
 298         int err,ret = 0;
 299
 300         add_wait_queue(&dev->dmasound.wq, &wait);
 301         mutex_lock(&dev->dmasound.lock);
 302         while (count > 0) {
 303                 /* wait for data if needed */
 304                 if (0 == dev->dmasound.read_count) {
 305                         if (!dev->dmasound.recording_on) {
 306                                 err = dsp_rec_start(dev);
 307                                 if (err < 0) {
 308                                         if (0 == ret)
 309                                                 ret = err;
 310                                         break;
 311                                 }
 312                         }
 313                         if (dev->dmasound.recording_on &&
 314                             !dev->dmasound.dma_running) {
 315                                 /* recover from overruns */
 316                                 spin_lock_irqsave(&dev->slock,flags);
 317                                 dsp_dma_start(dev);
 318                                 spin_unlock_irqrestore(&dev->slock,flags);
 319                         }
 320                         if (file->f_flags & O_NONBLOCK) {
 321                                 if (0 == ret)
 322                                         ret = -EAGAIN;
 323                                 break;
 324                         }
 325                         mutex_unlock(&dev->dmasound.lock);
 326                         set_current_state(TASK_INTERRUPTIBLE);
 327                         if (0 == dev->dmasound.read_count)
 328                                 schedule();
 329                         set_current_state(TASK_RUNNING);
 330                         mutex_lock(&dev->dmasound.lock);
 331                         if (signal_pending(current)) {
 332                                 if (0 == ret)
 333                                         ret = -EINTR;
 334                                 break;
 335                         }
 336                 }
 337
 338                 /* copy data to userspace */
 339                 bytes = count;
 340                 if (bytes > dev->dmasound.read_count)
 341                         bytes = dev->dmasound.read_count;
 342                 if (bytes > dev->dmasound.bufsize - dev->dmasound.read_offset)
 343                         bytes = dev->dmasound.bufsize - dev->dmasound.read_offset;
 344                 if (copy_to_user(buffer + ret,
 345                                  dev->dmasound.dma.vmalloc + dev->dmasound.read_offset,
 346                                  bytes)) {
 347                         if (0 == ret)
 348                                 ret = -EFAULT;
 349                         break;
 350                 }
 351
 352                 ret   += bytes;
 353                 count -= bytes;
 354                 dev->dmasound.read_count  -= bytes;
 355                 dev->dmasound.read_offset += bytes;
 356                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
 357                         dev->dmasound.read_offset = 0;
 358         }
 359         mutex_unlock(&dev->dmasound.lock);
 360         remove_wait_queue(&dev->dmasound.wq, &wait);
 361         return ret;
 362 }
 363
 364 static ssize_t dsp_write(struct file *file, const char __user *buffer,
 365                          size_t count, loff_t *ppos)
 366 {
 367         return -EINVAL;
 368 }
 369
 370 static const char *osspcm_ioctls[] = {
 371         "RESET", "SYNC", "SPEED", "STEREO", "GETBLKSIZE", "SETFMT",
 372         "CHANNELS", "?", "POST", "SUBDIVIDE", "SETFRAGMENT", "GETFMTS",
 373         "GETOSPACE", "GETISPACE", "NONBLOCK", "GETCAPS", "GET/SETTRIGGER",
 374         "GETIPTR", "GETOPTR", "MAPINBUF", "MAPOUTBUF", "SETSYNCRO",
 375         "SETDUPLEX", "GETODELAY"
 376 };
 377 #define OSSPCM_IOCTLS ARRAY_SIZE(osspcm_ioctls)
 378
 379 static void saa7134_oss_print_ioctl(char *name, unsigned int cmd)
 380 {
 381         char *dir;
 382
 383         switch (_IOC_DIR(cmd)) {
 384         case _IOC_NONE:              dir = "--"; break;
 385         case _IOC_READ:              dir = "r-"; break;
 386         case _IOC_WRITE:             dir = "-w"; break;
 387         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 388         default:                     dir = "??"; break;
 389         }
 390         switch (_IOC_TYPE(cmd)) {
 391         case 'P':
 392                 printk(KERN_DEBUG "%s: ioctl 0x%08x (oss dsp, %s, SNDCTL_DSP_%s)\n",
 393                        name, cmd, dir, (_IOC_NR(cmd) < OSSPCM_IOCTLS) ?
 394                        osspcm_ioctls[_IOC_NR(cmd)] : "???");
 395                 break;
 396         case 'M':
 397                 printk(KERN_DEBUG "%s: ioctl 0x%08x (oss mixer, %s, #%d)\n",
 398                        name, cmd, dir, _IOC_NR(cmd));
 399                 break;
 400         default:
 401                 printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
 402                        name, cmd, dir, _IOC_NR(cmd));
 403         }
 404 }
 405
 406 static int dsp_ioctl(struct inode *inode, struct file *file,
 407                      unsigned int cmd, unsigned long arg)
 408 {
 409         struct saa7134_dev *dev = file->private_data;
 410         void __user *argp = (void __user *) arg;
 411         int __user *p = argp;
 412         int val = 0;
 413
 414         if (debug > 1)
 415                 saa7134_oss_print_ioctl(dev->name,cmd);
 416         switch (cmd) {
 417         case OSS_GETVERSION:
 418                 return put_user(SOUND_VERSION, p);
 419         case SNDCTL_DSP_GETCAPS:
 420                 return 0;
 421
 422         case SNDCTL_DSP_SPEED:
 423                 if (get_user(val, p))
 424                         return -EFAULT;
 425                 /* fall through */
 426         case SOUND_PCM_READ_RATE:
 427                 return put_user(dev->dmasound.rate, p);
 428
 429         case SNDCTL_DSP_STEREO:
 430                 if (get_user(val, p))
 431                         return -EFAULT;
 432                 mutex_lock(&dev->dmasound.lock);
 433                 dev->dmasound.channels = val ? 2 : 1;
 434                 if (dev->dmasound.recording_on) {
 435                         dsp_rec_stop(dev);
 436                         dsp_rec_start(dev);
 437                 }
 438                 mutex_unlock(&dev->dmasound.lock);
 439                 return put_user(dev->dmasound.channels-1, p);
 440
 441         case SNDCTL_DSP_CHANNELS:
 442                 if (get_user(val, p))
 443                         return -EFAULT;
 444                 if (val != 1 && val != 2)
 445                         return -EINVAL;
 446                 mutex_lock(&dev->dmasound.lock);
 447                 dev->dmasound.channels = val;
 448                 if (dev->dmasound.recording_on) {
 449                         dsp_rec_stop(dev);
 450                         dsp_rec_start(dev);
 451                 }
 452                 mutex_unlock(&dev->dmasound.lock);
 453                 /* fall through */
 454         case SOUND_PCM_READ_CHANNELS:
 455                 return put_user(dev->dmasound.channels, p);
 456
 457         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 458                 return put_user(AFMT_U8     | AFMT_S8     |
 459                                 AFMT_U16_LE | AFMT_U16_BE |
 460                                 AFMT_S16_LE | AFMT_S16_BE, p);
 461
 462         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 463                 if (get_user(val, p))
 464                         return -EFAULT;
 465                 switch (val) {
 466                 case AFMT_QUERY:
 467                         /* nothing to do */
 468                         break;
 469                 case AFMT_U8:
 470                 case AFMT_S8:
 471                 case AFMT_U16_LE:
 472                 case AFMT_U16_BE:
 473                 case AFMT_S16_LE:
 474                 case AFMT_S16_BE:
 475                         mutex_lock(&dev->dmasound.lock);
 476                         dev->dmasound.afmt = val;
 477                         if (dev->dmasound.recording_on) {
 478                                 dsp_rec_stop(dev);
 479                                 dsp_rec_start(dev);
 480                         }
 481                         mutex_unlock(&dev->dmasound.lock);
 482                         return put_user(dev->dmasound.afmt, p);
 483                 default:
 484                         return -EINVAL;
 485                 }
 486
 487         case SOUND_PCM_READ_BITS:
 488                 switch (dev->dmasound.afmt) {
 489                 case AFMT_U8:
 490                 case AFMT_S8:
 491                         return put_user(8, p);
 492                 case AFMT_U16_LE:
 493                 case AFMT_U16_BE:
 494                 case AFMT_S16_LE:
 495                 case AFMT_S16_BE:
 496                         return put_user(16, p);
 497                 default:
 498                         return -EINVAL;
 499                 }
 500
 501         case SNDCTL_DSP_NONBLOCK:
 502                 file->f_flags |= O_NONBLOCK;
 503                 return 0;
 504
 505         case SNDCTL_DSP_RESET:
 506                 mutex_lock(&dev->dmasound.lock);
 507                 if (dev->dmasound.recording_on)
 508                         dsp_rec_stop(dev);
 509                 mutex_unlock(&dev->dmasound.lock);
 510                 return 0;
 511         case SNDCTL_DSP_GETBLKSIZE:
 512                 return put_user(dev->dmasound.blksize, p);
 513
 514         case SNDCTL_DSP_SETFRAGMENT:
 515                 if (get_user(val, p))
 516                         return -EFAULT;
 517                 if (dev->dmasound.recording_on)
 518                         return -EBUSY;
 519                 dsp_buffer_free(dev);
 520                 /* used to be arg >> 16 instead of val >> 16; fixed */
 521                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 522                 dsp_buffer_init(dev);
 523                 return 0;
 524
 525         case SNDCTL_DSP_SYNC:
 526                 /* NOP */
 527                 return 0;
 528
 529         case SNDCTL_DSP_GETISPACE:
 530         {
 531                 audio_buf_info info;
 532                 info.fragsize   = dev->dmasound.blksize;
 533                 info.fragstotal = dev->dmasound.blocks;
 534                 info.bytes      = dev->dmasound.read_count;
 535                 info.fragments  = info.bytes / info.fragsize;
 536                 if (copy_to_user(argp, &info, sizeof(info)))
 537                         return -EFAULT;
 538                 return 0;
 539         }
 540         default:
 541                 return -EINVAL;
 542         }
 543 }
 544
 545 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 546 {
 547         struct saa7134_dev *dev = file->private_data;
 548         unsigned int mask = 0;
 549
 550         poll_wait(file, &dev->dmasound.wq, wait);
 551
 552         if (0 == dev->dmasound.read_count) {
 553                 mutex_lock(&dev->dmasound.lock);
 554                 if (!dev->dmasound.recording_on)
 555                         dsp_rec_start(dev);
 556                 mutex_unlock(&dev->dmasound.lock);
 557         } else
 558                 mask |= (POLLIN | POLLRDNORM);
 559         return mask;
 560 }
 561
 562 const struct file_operations saa7134_dsp_fops = {
 563         .owner   = THIS_MODULE,
 564         .open    = dsp_open,
 565         .release = dsp_release,
 566         .read    = dsp_read,
 567         .write   = dsp_write,
 568         .ioctl   = dsp_ioctl,
 569         .poll    = dsp_poll,
 570         .llseek  = no_llseek,
 571 };
 572
 573 /* ------------------------------------------------------------------ */
 574
 575 static int
 576 mixer_recsrc_7134(struct saa7134_dev *dev)
 577 {
 578         int analog_io,rate;
 579
 580         switch (dev->dmasound.input) {
 581         case TV:
 582                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 583                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 584                 break;
 585         case LINE1:
 586         case LINE2:
 587         case LINE2_LEFT:
 588                 analog_io = (LINE1 == dev->dmasound.input) ? 0x00 : 0x08;
 589                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
 590                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 591                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 592                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 593                 break;
 594         }
 595         return 0;
 596 }
 597
 598 static int
 599 mixer_recsrc_7133(struct saa7134_dev *dev)
 600 {
 601         u32 anabar, xbarin;
 602
 603         xbarin = 0x03; // adc
 604     anabar = 0;
 605         switch (dev->dmasound.input) {
 606         case TV:
 607                 xbarin = 0; // Demodulator
 608         anabar = 2; // DACs
 609                 break;
 610         case LINE1:
 611                 anabar = 0;  // aux1, aux1
 612                 break;
 613         case LINE2:
 614         case LINE2_LEFT:
 615                 anabar = 9;  // aux2, aux2
 616                 break;
 617         }
 618     /* output xbar always main channel */
 619         saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
 620         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 621         saa_writel(0x594 >> 2, anabar);
 622
 623         return 0;
 624 }
 625
 626 static int
 627 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 628 {
 629         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 630
 631         dev->dmasound.count++;
 632         dev->dmasound.input = src;
 633         dprintk("mixer input = %s\n",iname[dev->dmasound.input]);
 634
 635         switch (dev->pci->device) {
 636         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 637                 mixer_recsrc_7134(dev);
 638                 break;
 639         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 640         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 641                 mixer_recsrc_7133(dev);
 642                 break;
 643         }
 644         return 0;
 645 }
 646
 647 static int
 648 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 649 {
 650         switch (dev->pci->device) {
 651         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 652                 switch (src) {
 653                 case TV:
 654                         /* nothing */
 655                         break;
 656                 case LINE1:
 657                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 658                                    (100 == level) ? 0x00 : 0x10);
 659                         break;
 660                 case LINE2:
 661                 case LINE2_LEFT:
 662                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 663                                    (100 == level) ? 0x00 : 0x20);
 664                         break;
 665                 }
 666                 break;
 667         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 668         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 669                 /* nothing */
 670                 break;
 671         }
 672         return 0;
 673 }
 674
 675 /* ------------------------------------------------------------------ */
 676
 677 static int mixer_open(struct inode *inode, struct file *file)
 678 {
 679         int minor = iminor(inode);
 680         struct saa7134_dev *dev;
 681
 682         list_for_each_entry(dev, &saa7134_devlist, devlist)
 683                 if (dev->dmasound.minor_mixer == minor) {
 684                         file->private_data = dev;
 685                         return 0;
 686                 }
 687         return -ENODEV;
 688 }
 689
 690 static int mixer_release(struct inode *inode, struct file *file)
 691 {
 692         file->private_data = NULL;
 693         return 0;
 694 }
 695
 696 static int mixer_ioctl(struct inode *inode, struct file *file,
 697                      unsigned int cmd, unsigned long arg)
 698 {
 699         struct saa7134_dev *dev = file->private_data;
 700         enum saa7134_audio_in input;
 701         int val,ret;
 702         void __user *argp = (void __user *) arg;
 703         int __user *p = argp;
 704
 705         if (debug > 1)
 706                 saa7134_oss_print_ioctl(dev->name,cmd);
 707         switch (cmd) {
 708         case OSS_GETVERSION:
 709                 return put_user(SOUND_VERSION, p);
 710         case SOUND_MIXER_INFO:
 711         {
 712                 mixer_info info;
 713                 memset(&info,0,sizeof(info));
 714                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 715                 strlcpy(info.name, dev->name,  sizeof(info.name));
 716                 info.modify_counter = dev->dmasound.count;
 717                 if (copy_to_user(argp, &info, sizeof(info)))
 718                         return -EFAULT;
 719                 return 0;
 720         }
 721         case SOUND_OLD_MIXER_INFO:
 722         {
 723                 _old_mixer_info info;
 724                 memset(&info,0,sizeof(info));
 725                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 726                 strlcpy(info.name, dev->name,  sizeof(info.name));
 727                 if (copy_to_user(argp, &info, sizeof(info)))
 728                         return -EFAULT;
 729                 return 0;
 730         }
 731         case MIXER_READ(SOUND_MIXER_CAPS):
 732                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 733         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 734                 return put_user(0, p);
 735         case MIXER_READ(SOUND_MIXER_RECMASK):
 736         case MIXER_READ(SOUND_MIXER_DEVMASK):
 737                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 738                 if (32000 == dev->dmasound.rate)
 739                         val |= SOUND_MASK_VIDEO;
 740                 return put_user(val, p);
 741
 742         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 743                 if (get_user(val, p))
 744                         return -EFAULT;
 745                 input = dev->dmasound.input;
 746                 if (32000 == dev->dmasound.rate  &&
 747                     val & SOUND_MASK_VIDEO  &&  dev->dmasound.input != TV)
 748                         input = TV;
 749                 if (val & SOUND_MASK_LINE1  &&  dev->dmasound.input != LINE1)
 750                         input = LINE1;
 751                 if (val & SOUND_MASK_LINE2  &&  dev->dmasound.input != LINE2)
 752                         input = LINE2;
 753                 if (input != dev->dmasound.input)
 754                         mixer_recsrc(dev,input);
 755                 /* fall throuth */
 756         case MIXER_READ(SOUND_MIXER_RECSRC):
 757                 switch (dev->dmasound.input) {
 758                 case TV:    ret = SOUND_MASK_VIDEO; break;
 759                 case LINE1: ret = SOUND_MASK_LINE1; break;
 760                 case LINE2: ret = SOUND_MASK_LINE2; break;
 761                 default:    ret = 0;
 762                 }
 763                 return put_user(ret, p);
 764
 765         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 766         case MIXER_READ(SOUND_MIXER_VIDEO):
 767                 if (32000 != dev->dmasound.rate)
 768                         return -EINVAL;
 769                 return put_user(100 | 100 << 8, p);
 770
 771         case MIXER_WRITE(SOUND_MIXER_LINE1):
 772                 if (get_user(val, p))
 773                         return -EFAULT;
 774                 val &= 0xff;
 775                 val = (val <= 50) ? 50 : 100;
 776                 dev->dmasound.line1 = val;
 777                 mixer_level(dev,LINE1,dev->dmasound.line1);
 778                 /* fall throuth */
 779         case MIXER_READ(SOUND_MIXER_LINE1):
 780                 return put_user(dev->dmasound.line1 | dev->dmasound.line1 << 8, p);
 781
 782         case MIXER_WRITE(SOUND_MIXER_LINE2):
 783                 if (get_user(val, p))
 784                         return -EFAULT;
 785                 val &= 0xff;
 786                 val = (val <= 50) ? 50 : 100;
 787                 dev->dmasound.line2 = val;
 788                 mixer_level(dev,LINE2,dev->dmasound.line2);
 789                 /* fall throuth */
 790         case MIXER_READ(SOUND_MIXER_LINE2):
 791                 return put_user(dev->dmasound.line2 | dev->dmasound.line2 << 8, p);
 792
 793         default:
 794                 return -EINVAL;
 795         }
 796 }
 797
 798 const struct file_operations saa7134_mixer_fops = {
 799         .owner   = THIS_MODULE,
 800         .open    = mixer_open,
 801         .release = mixer_release,
 802         .ioctl   = mixer_ioctl,
 803         .llseek  = no_llseek,
 804 };
 805
 806 /* ------------------------------------------------------------------ */
 807
 808 static irqreturn_t saa7134_oss_irq(int irq, void *dev_id)
 809 {
 810         struct saa7134_dmasound *dmasound = dev_id;
 811         struct saa7134_dev *dev = dmasound->priv_data;
 812         unsigned long report, status;
 813         int loop, handled = 0;
 814
 815         for (loop = 0; loop < 10; loop++) {
 816                 report = saa_readl(SAA7134_IRQ_REPORT);
 817                 status = saa_readl(SAA7134_IRQ_STATUS);
 818
 819                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
 820                         handled = 1;
 821                         saa_writel(SAA7134_IRQ_REPORT,report);
 822                         saa7134_irq_oss_done(dev, status);
 823                 } else {
 824                         goto out;
 825                 }
 826         }
 827
 828         if (loop == 10) {
 829                 dprintk("error! looping IRQ!");
 830         }
 831 out:
 832         return IRQ_RETVAL(handled);
 833 }
 834
 835 int saa7134_oss_init1(struct saa7134_dev *dev)
 836 {
 837
 838         if ((request_irq(dev->pci->irq, saa7134_oss_irq,
 839                          IRQF_SHARED | IRQF_DISABLED, dev->name,
 840                         (void*) &dev->dmasound)) < 0)
 841                 return -1;
 842
 843         /* general */
 844         mutex_init(&dev->dmasound.lock);
 845         init_waitqueue_head(&dev->dmasound.wq);
 846
 847         switch (dev->pci->device) {
 848         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 849         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 850                 saa_writel(0x588 >> 2, 0x00000fff);
 851                 saa_writel(0x58c >> 2, 0x00543210);
 852                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 853                 break;
 854         }
 855
 856         /* dsp */
 857         dev->dmasound.rate = 32000;
 858         if (rate)
 859                 dev->dmasound.rate = rate;
 860         dev->dmasound.rate = (dev->dmasound.rate > 40000) ? 48000 : 32000;
 861
 862         /* mixer */
 863         dev->dmasound.line1 = 50;
 864         dev->dmasound.line2 = 50;
 865         mixer_level(dev,LINE1,dev->dmasound.line1);
 866         mixer_level(dev,LINE2,dev->dmasound.line2);
 867         mixer_recsrc(dev, (dev->dmasound.rate == 32000) ? TV : LINE2);
 868
 869         return 0;
 870 }
 871
 872 int saa7134_oss_fini(struct saa7134_dev *dev)
 873 {
 874         /* nothing */
 875         return 0;
 876 }
 877
 878 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 879 {
 880         int next_blk, reg = 0;
 881
 882         spin_lock(&dev->slock);
 883         if (UNSET == dev->dmasound.dma_blk) {
 884                 dprintk("irq: recording stopped\n");
 885                 goto done;
 886         }
 887         if (0 != (status & 0x0f000000))
 888                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 889         if (0 == (status & 0x10000000)) {
 890                 /* odd */
 891                 if (0 == (dev->dmasound.dma_blk & 0x01))
 892                         reg = SAA7134_RS_BA1(6);
 893         } else {
 894                 /* even */
 895                 if (1 == (dev->dmasound.dma_blk & 0x01))
 896                         reg = SAA7134_RS_BA2(6);
 897         }
 898         if (0 == reg) {
 899                 dprintk("irq: field oops [%s]\n",
 900                         (status & 0x10000000) ? "even" : "odd");
 901                 goto done;
 902         }
 903         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
 904                 dprintk("irq: overrun [full=%d/%d]\n",dev->dmasound.read_count,
 905                         dev->dmasound.bufsize);
 906                 dsp_dma_stop(dev);
 907                 goto done;
 908         }
 909
 910         /* next block addr */
 911         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
 912         saa_writel(reg,next_blk * dev->dmasound.blksize);
 913         if (debug > 2)
 914                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 915                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 916                         next_blk * dev->dmasound.blksize);
 917
 918         /* update status & wake waiting readers */
 919         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
 920         dev->dmasound.read_count += dev->dmasound.blksize;
 921         wake_up(&dev->dmasound.wq);
 922
 923  done:
 924         spin_unlock(&dev->slock);
 925 }
 926
 927 static int saa7134_dsp_create(struct saa7134_dev *dev)
 928 {
 929         int err;
 930
 931         err = dev->dmasound.minor_dsp =
 932                 register_sound_dsp(&saa7134_dsp_fops,
 933                                    dsp_nr[dev->nr]);
 934         if (err < 0) {
 935                 goto fail;
 936         }
 937         printk(KERN_INFO "%s: registered device dsp%d\n",
 938                dev->name,dev->dmasound.minor_dsp >> 4);
 939
 940         err = dev->dmasound.minor_mixer =
 941                 register_sound_mixer(&saa7134_mixer_fops,
 942                                      mixer_nr[dev->nr]);
 943         if (err < 0)
 944                 goto fail;
 945         printk(KERN_INFO "%s: registered device mixer%d\n",
 946                dev->name,dev->dmasound.minor_mixer >> 4);
 947
 948         return 0;
 949
 950 fail:
 951         unregister_sound_dsp(dev->dmasound.minor_dsp);
 952         return 0;
 953
 954
 955 }
 956
 957 static int oss_device_init(struct saa7134_dev *dev)
 958 {
 959         dev->dmasound.priv_data = dev;
 960         saa7134_oss_init1(dev);
 961         saa7134_dsp_create(dev);
 962         return 1;
 963 }
 964
 965 static int oss_device_exit(struct saa7134_dev *dev)
 966 {
 967
 968         unregister_sound_mixer(dev->dmasound.minor_mixer);
 969         unregister_sound_dsp(dev->dmasound.minor_dsp);
 970
 971         saa7134_oss_fini(dev);
 972
 973         if (dev->pci->irq > 0) {
 974                 synchronize_irq(dev->pci->irq);
 975                 free_irq(dev->pci->irq,&dev->dmasound);
 976         }
 977
 978         dev->dmasound.priv_data = NULL;
 979         return 1;
 980 }
 981
 982 static int saa7134_oss_init(void)
 983 {
 984         struct saa7134_dev *dev = NULL;
 985         struct list_head *list;
 986
 987         if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
 988                 saa7134_dmasound_init = oss_device_init;
 989                 saa7134_dmasound_exit = oss_device_exit;
 990         } else {
 991                 printk(KERN_WARNING "saa7134 OSS: can't load, DMA sound handler already assigned (probably to ALSA)\n");
 992                 return -EBUSY;
 993         }
 994
 995         printk(KERN_INFO "saa7134 OSS driver for DMA sound loaded\n");
 996
 997
 998         list_for_each(list,&saa7134_devlist) {
 999                 dev = list_entry(list, struct saa7134_dev, devlist);
1000                 if (dev->dmasound.priv_data == NULL) {
1001                         oss_device_init(dev);
1002                 } else {
1003                         printk(KERN_ERR "saa7134 OSS: DMA sound is being handled by ALSA, ignoring %s\n",dev->name);
1004                         return -EBUSY;
1005                 }
1006         }
1007
1008         if (dev == NULL)
1009                 printk(KERN_INFO "saa7134 OSS: no saa7134 cards found\n");
1010
1011         return 0;
1012
1013 }
1014
1015 static void saa7134_oss_exit(void)
1016 {
1017         struct saa7134_dev *dev;
1018
1019         list_for_each_entry(dev, &saa7134_devlist, devlist) {
1020                 /* Device isn't registered by OSS, probably ALSA's */
1021                 if (!dev->dmasound.minor_dsp)
1022                         continue;
1023
1024                 oss_device_exit(dev);
1025         }
1026
1027         saa7134_dmasound_init = NULL;
1028         saa7134_dmasound_exit = NULL;
1029
1030         printk(KERN_INFO "saa7134 OSS driver for DMA sound unloaded\n");
1031
1032         return;
1033 }
1034
1035 /* We initialize this late, to make sure the sound system is up and running */
1036 late_initcall(saa7134_oss_init);
1037 module_exit(saa7134_oss_exit);
1038 MODULE_LICENSE("GPL");
1039 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
1040
1041 /* ----------------------------------------------------------- */
1042 /*
1043  * Local variables:
1044  * c-basic-offset: 8
1045  * End:
1046  */