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

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * oss dsp interface
   5  *
   6  * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   7  *     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/moduleparam.h>
  29 #include <linux/kernel.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/slab.h>
  32 #include <linux/sound.h>
  33 #include <linux/soundcard.h>
  34
  35 #include "saa7134-reg.h"
  36 #include "saa7134.h"
  37
  38 /* ------------------------------------------------------------------ */
  39
  40 static unsigned int debug  = 0;
  41 module_param(debug, int, 0644);
  42 MODULE_PARM_DESC(debug,"enable debug messages [oss]");
  43
  44 static unsigned int rate  = 0;
  45 module_param(rate, int, 0444);
  46 MODULE_PARM_DESC(rate,"sample rate (valid are: 32000,48000)");
  47
  48 static unsigned int dsp_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  49 MODULE_PARM_DESC(dsp_nr, "device numbers for SAA7134 capture interface(s).");
  50 module_param_array(dsp_nr,   int, NULL, 0444);
  51
  52 static unsigned int mixer_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  53 MODULE_PARM_DESC(mixer_nr, "mixer numbers for SAA7134 capture interface(s).");
  54 module_param_array(mixer_nr, int, NULL, 0444);
  55
  56 #define dprintk(fmt, arg...)    if (debug) \
  57         printk(KERN_DEBUG "%s/oss: " fmt, dev->name , ## arg)
  58
  59
  60 /* ------------------------------------------------------------------ */
  61
  62 static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
  63 {
  64         if (blksize < 0x100)
  65                 blksize = 0x100;
  66         if (blksize > 0x10000)
  67                 blksize = 0x10000;
  68
  69         if (blocks < 2)
  70                 blocks = 2;
  71         if ((blksize * blocks) > 1024*1024)
  72                 blocks = 1024*1024 / blksize;
  73
  74         dev->dmasound.blocks  = blocks;
  75         dev->dmasound.blksize = blksize;
  76         dev->dmasound.bufsize = blksize * blocks;
  77
  78         dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
  79                 blocks,blksize,blksize * blocks / 1024);
  80         return 0;
  81 }
  82
  83 static int dsp_buffer_init(struct saa7134_dev *dev)
  84 {
  85         int err;
  86
  87         if (!dev->dmasound.bufsize)
  88                 BUG();
  89         videobuf_dma_init(&dev->dmasound.dma);
  90         err = videobuf_dma_init_kernel(&dev->dmasound.dma, PCI_DMA_FROMDEVICE,
  91                                        (dev->dmasound.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
  92         if (0 != err)
  93                 return err;
  94         return 0;
  95 }
  96
  97 static int dsp_buffer_free(struct saa7134_dev *dev)
  98 {
  99         if (!dev->dmasound.blksize)
 100                 BUG();
 101         videobuf_dma_free(&dev->dmasound.dma);
 102         dev->dmasound.blocks  = 0;
 103         dev->dmasound.blksize = 0;
 104         dev->dmasound.bufsize = 0;
 105         return 0;
 106 }
 107
 108 static void dsp_dma_start(struct saa7134_dev *dev)
 109 {
 110         dev->dmasound.dma_blk     = 0;
 111         dev->dmasound.dma_running = 1;
 112         saa7134_set_dmabits(dev);
 113 }
 114
 115 static void dsp_dma_stop(struct saa7134_dev *dev)
 116 {
 117         dev->dmasound.dma_blk     = -1;
 118         dev->dmasound.dma_running = 0;
 119         saa7134_set_dmabits(dev);
 120 }
 121
 122 static int dsp_rec_start(struct saa7134_dev *dev)
 123 {
 124         int err, bswap, sign;
 125         u32 fmt, control;
 126         unsigned long flags;
 127
 128         /* prepare buffer */
 129         if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->dmasound.dma)))
 130                 return err;
 131         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->dmasound.pt)))
 132                 goto fail1;
 133         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->dmasound.pt,
 134                                               dev->dmasound.dma.sglist,
 135                                               dev->dmasound.dma.sglen,
 136                                               0)))
 137                 goto fail2;
 138
 139         /* sample format */
 140         switch (dev->dmasound.afmt) {
 141         case AFMT_U8:
 142         case AFMT_S8:     fmt = 0x00;  break;
 143         case AFMT_U16_LE:
 144         case AFMT_U16_BE:
 145         case AFMT_S16_LE:
 146         case AFMT_S16_BE: fmt = 0x01;  break;
 147         default:
 148                 err = -EINVAL;
 149                 goto fail2;
 150         }
 151
 152         switch (dev->dmasound.afmt) {
 153         case AFMT_S8:
 154         case AFMT_S16_LE:
 155         case AFMT_S16_BE: sign = 1; break;
 156         default:          sign = 0; break;
 157         }
 158
 159         switch (dev->dmasound.afmt) {
 160         case AFMT_U16_BE:
 161         case AFMT_S16_BE: bswap = 1; break;
 162         default:          bswap = 0; break;
 163         }
 164
 165         switch (dev->pci->device) {
 166         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 167                 if (1 == dev->dmasound.channels)
 168                         fmt |= (1 << 3);
 169                 if (2 == dev->dmasound.channels)
 170                         fmt |= (3 << 3);
 171                 if (sign)
 172                         fmt |= 0x04;
 173                 fmt |= (TV == dev->dmasound.input) ? 0xc0 : 0x80;
 174
 175                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->dmasound.blksize - 1) & 0x0000ff));
 176                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->dmasound.blksize - 1) & 0x00ff00) >>  8);
 177                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->dmasound.blksize - 1) & 0xff0000) >> 16);
 178                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
 179
 180                 break;
 181         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 182         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 183                 if (1 == dev->dmasound.channels)
 184                         fmt |= (1 << 4);
 185                 if (2 == dev->dmasound.channels)
 186                         fmt |= (2 << 4);
 187                 if (!sign)
 188                         fmt |= 0x04;
 189                 saa_writel(SAA7133_NUM_SAMPLES, dev->dmasound.blksize -4);
 190                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
 191                 break;
 192         }
 193         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
 194                 dev->dmasound.afmt, dev->dmasound.channels, fmt,
 195                 bswap ? 'b' : '-');
 196
 197         /* dma: setup channel 6 (= AUDIO) */
 198         control = SAA7134_RS_CONTROL_BURST_16 |
 199                 SAA7134_RS_CONTROL_ME |
 200                 (dev->dmasound.pt.dma >> 12);
 201         if (bswap)
 202                 control |= SAA7134_RS_CONTROL_BSWAP;
 203         saa_writel(SAA7134_RS_BA1(6),0);
 204         saa_writel(SAA7134_RS_BA2(6),dev->dmasound.blksize);
 205         saa_writel(SAA7134_RS_PITCH(6),0);
 206         saa_writel(SAA7134_RS_CONTROL(6),control);
 207
 208         /* start dma */
 209         dev->dmasound.recording_on = 1;
 210         spin_lock_irqsave(&dev->slock,flags);
 211         dsp_dma_start(dev);
 212         spin_unlock_irqrestore(&dev->slock,flags);
 213         return 0;
 214
 215  fail2:
 216         saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
 217  fail1:
 218         videobuf_dma_pci_unmap(dev->pci,&dev->dmasound.dma);
 219         return err;
 220 }
 221
 222 static int dsp_rec_stop(struct saa7134_dev *dev)
 223 {
 224         unsigned long flags;
 225
 226         dprintk("rec_stop dma_blk=%d\n",dev->dmasound.dma_blk);
 227
 228         /* stop dma */
 229         dev->dmasound.recording_on = 0;
 230         spin_lock_irqsave(&dev->slock,flags);
 231         dsp_dma_stop(dev);
 232         spin_unlock_irqrestore(&dev->slock,flags);
 233
 234         /* unlock buffer */
 235         saa7134_pgtable_free(dev->pci,&dev->dmasound.pt);
 236         videobuf_dma_pci_unmap(dev->pci,&dev->dmasound.dma);
 237         return 0;
 238 }
 239
 240 /* ------------------------------------------------------------------ */
 241
 242 static int dsp_open(struct inode *inode, struct file *file)
 243 {
 244         int minor = iminor(inode);
 245         struct saa7134_dev *h,*dev = NULL;
 246         struct list_head *list;
 247         int err;
 248
 249         list_for_each(list,&saa7134_devlist) {
 250                 h = list_entry(list, struct saa7134_dev, devlist);
 251                 if (h->dmasound.minor_dsp == minor)
 252                         dev = h;
 253         }
 254         if (NULL == dev)
 255                 return -ENODEV;
 256
 257         down(&dev->dmasound.lock);
 258         err = -EBUSY;
 259         if (dev->dmasound.users_dsp)
 260                 goto fail1;
 261         dev->dmasound.users_dsp++;
 262         file->private_data = dev;
 263
 264         dev->dmasound.afmt        = AFMT_U8;
 265         dev->dmasound.channels    = 1;
 266         dev->dmasound.read_count  = 0;
 267         dev->dmasound.read_offset = 0;
 268         dsp_buffer_conf(dev,PAGE_SIZE,64);
 269         err = dsp_buffer_init(dev);
 270         if (0 != err)
 271                 goto fail2;
 272
 273         up(&dev->dmasound.lock);
 274         return 0;
 275
 276  fail2:
 277         dev->dmasound.users_dsp--;
 278  fail1:
 279         up(&dev->dmasound.lock);
 280         return err;
 281 }
 282
 283 static int dsp_release(struct inode *inode, struct file *file)
 284 {
 285         struct saa7134_dev *dev = file->private_data;
 286
 287         down(&dev->dmasound.lock);
 288         if (dev->dmasound.recording_on)
 289                 dsp_rec_stop(dev);
 290         dsp_buffer_free(dev);
 291         dev->dmasound.users_dsp--;
 292         file->private_data = NULL;
 293         up(&dev->dmasound.lock);
 294         return 0;
 295 }
 296
 297 static ssize_t dsp_read(struct file *file, char __user *buffer,
 298                         size_t count, loff_t *ppos)
 299 {
 300         struct saa7134_dev *dev = file->private_data;
 301         DECLARE_WAITQUEUE(wait, current);
 302         unsigned int bytes;
 303         unsigned long flags;
 304         int err,ret = 0;
 305
 306         add_wait_queue(&dev->dmasound.wq, &wait);
 307         down(&dev->dmasound.lock);
 308         while (count > 0) {
 309                 /* wait for data if needed */
 310                 if (0 == dev->dmasound.read_count) {
 311                         if (!dev->dmasound.recording_on) {
 312                                 err = dsp_rec_start(dev);
 313                                 if (err < 0) {
 314                                         if (0 == ret)
 315                                                 ret = err;
 316                                         break;
 317                                 }
 318                         }
 319                         if (dev->dmasound.recording_on &&
 320                             !dev->dmasound.dma_running) {
 321                                 /* recover from overruns */
 322                                 spin_lock_irqsave(&dev->slock,flags);
 323                                 dsp_dma_start(dev);
 324                                 spin_unlock_irqrestore(&dev->slock,flags);
 325                         }
 326                         if (file->f_flags & O_NONBLOCK) {
 327                                 if (0 == ret)
 328                                         ret = -EAGAIN;
 329                                 break;
 330                         }
 331                         up(&dev->dmasound.lock);
 332                         set_current_state(TASK_INTERRUPTIBLE);
 333                         if (0 == dev->dmasound.read_count)
 334                                 schedule();
 335                         set_current_state(TASK_RUNNING);
 336                         down(&dev->dmasound.lock);
 337                         if (signal_pending(current)) {
 338                                 if (0 == ret)
 339                                         ret = -EINTR;
 340                                 break;
 341                         }
 342                 }
 343
 344                 /* copy data to userspace */
 345                 bytes = count;
 346                 if (bytes > dev->dmasound.read_count)
 347                         bytes = dev->dmasound.read_count;
 348                 if (bytes > dev->dmasound.bufsize - dev->dmasound.read_offset)
 349                         bytes = dev->dmasound.bufsize - dev->dmasound.read_offset;
 350                 if (copy_to_user(buffer + ret,
 351                                  dev->dmasound.dma.vmalloc + dev->dmasound.read_offset,
 352                                  bytes)) {
 353                         if (0 == ret)
 354                                 ret = -EFAULT;
 355                         break;
 356                 }
 357
 358                 ret   += bytes;
 359                 count -= bytes;
 360                 dev->dmasound.read_count  -= bytes;
 361                 dev->dmasound.read_offset += bytes;
 362                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
 363                         dev->dmasound.read_offset = 0;
 364         }
 365         up(&dev->dmasound.lock);
 366         remove_wait_queue(&dev->dmasound.wq, &wait);
 367         return ret;
 368 }
 369
 370 static ssize_t dsp_write(struct file *file, const char __user *buffer,
 371                          size_t count, loff_t *ppos)
 372 {
 373         return -EINVAL;
 374 }
 375
 376 static const char *osspcm_ioctls[] = {
 377         "RESET", "SYNC", "SPEED", "STEREO", "GETBLKSIZE", "SETFMT",
 378         "CHANNELS", "?", "POST", "SUBDIVIDE", "SETFRAGMENT", "GETFMTS",
 379         "GETOSPACE", "GETISPACE", "NONBLOCK", "GETCAPS", "GET/SETTRIGGER",
 380         "GETIPTR", "GETOPTR", "MAPINBUF", "MAPOUTBUF", "SETSYNCRO",
 381         "SETDUPLEX", "GETODELAY"
 382 };
 383 #define OSSPCM_IOCTLS ARRAY_SIZE(osspcm_ioctls)
 384
 385 static void saa7134_oss_print_ioctl(char *name, unsigned int cmd)
 386 {
 387         char *dir;
 388
 389         switch (_IOC_DIR(cmd)) {
 390         case _IOC_NONE:              dir = "--"; break;
 391         case _IOC_READ:              dir = "r-"; break;
 392         case _IOC_WRITE:             dir = "-w"; break;
 393         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 394         default:                     dir = "??"; break;
 395         }
 396         switch (_IOC_TYPE(cmd)) {
 397         case 'P':
 398                 printk(KERN_DEBUG "%s: ioctl 0x%08x (oss dsp, %s, SNDCTL_DSP_%s)\n",
 399                        name, cmd, dir, (_IOC_NR(cmd) < OSSPCM_IOCTLS) ?
 400                        osspcm_ioctls[_IOC_NR(cmd)] : "???");
 401                 break;
 402         case 'M':
 403                 printk(KERN_DEBUG "%s: ioctl 0x%08x (oss mixer, %s, #%d)\n",
 404                        name, cmd, dir, _IOC_NR(cmd));
 405                 break;
 406         default:
 407                 printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
 408                        name, cmd, dir, _IOC_NR(cmd));
 409         }
 410 }
 411
 412 static int dsp_ioctl(struct inode *inode, struct file *file,
 413                      unsigned int cmd, unsigned long arg)
 414 {
 415         struct saa7134_dev *dev = file->private_data;
 416         void __user *argp = (void __user *) arg;
 417         int __user *p = argp;
 418         int val = 0;
 419
 420         if (debug > 1)
 421                 saa7134_oss_print_ioctl(dev->name,cmd);
 422         switch (cmd) {
 423         case OSS_GETVERSION:
 424                 return put_user(SOUND_VERSION, p);
 425         case SNDCTL_DSP_GETCAPS:
 426                 return 0;
 427
 428         case SNDCTL_DSP_SPEED:
 429                 if (get_user(val, p))
 430                         return -EFAULT;
 431                 /* fall through */
 432         case SOUND_PCM_READ_RATE:
 433                 return put_user(dev->dmasound.rate, p);
 434
 435         case SNDCTL_DSP_STEREO:
 436                 if (get_user(val, p))
 437                         return -EFAULT;
 438                 down(&dev->dmasound.lock);
 439                 dev->dmasound.channels = val ? 2 : 1;
 440                 if (dev->dmasound.recording_on) {
 441                         dsp_rec_stop(dev);
 442                         dsp_rec_start(dev);
 443                 }
 444                 up(&dev->dmasound.lock);
 445                 return put_user(dev->dmasound.channels-1, p);
 446
 447         case SNDCTL_DSP_CHANNELS:
 448                 if (get_user(val, p))
 449                         return -EFAULT;
 450                 if (val != 1 && val != 2)
 451                         return -EINVAL;
 452                 down(&dev->dmasound.lock);
 453                 dev->dmasound.channels = val;
 454                 if (dev->dmasound.recording_on) {
 455                         dsp_rec_stop(dev);
 456                         dsp_rec_start(dev);
 457                 }
 458                 up(&dev->dmasound.lock);
 459                 /* fall through */
 460         case SOUND_PCM_READ_CHANNELS:
 461                 return put_user(dev->dmasound.channels, p);
 462
 463         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 464                 return put_user(AFMT_U8     | AFMT_S8     |
 465                                 AFMT_U16_LE | AFMT_U16_BE |
 466                                 AFMT_S16_LE | AFMT_S16_BE, p);
 467
 468         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 469                 if (get_user(val, p))
 470                         return -EFAULT;
 471                 switch (val) {
 472                 case AFMT_QUERY:
 473                         /* nothing to do */
 474                         break;
 475                 case AFMT_U8:
 476                 case AFMT_S8:
 477                 case AFMT_U16_LE:
 478                 case AFMT_U16_BE:
 479                 case AFMT_S16_LE:
 480                 case AFMT_S16_BE:
 481                         down(&dev->dmasound.lock);
 482                         dev->dmasound.afmt = val;
 483                         if (dev->dmasound.recording_on) {
 484                                 dsp_rec_stop(dev);
 485                                 dsp_rec_start(dev);
 486                         }
 487                         up(&dev->dmasound.lock);
 488                         return put_user(dev->dmasound.afmt, p);
 489                 default:
 490                         return -EINVAL;
 491                 }
 492
 493         case SOUND_PCM_READ_BITS:
 494                 switch (dev->dmasound.afmt) {
 495                 case AFMT_U8:
 496                 case AFMT_S8:
 497                         return put_user(8, p);
 498                 case AFMT_U16_LE:
 499                 case AFMT_U16_BE:
 500                 case AFMT_S16_LE:
 501                 case AFMT_S16_BE:
 502                         return put_user(16, p);
 503                 default:
 504                         return -EINVAL;
 505                 }
 506
 507         case SNDCTL_DSP_NONBLOCK:
 508                 file->f_flags |= O_NONBLOCK;
 509                 return 0;
 510
 511         case SNDCTL_DSP_RESET:
 512                 down(&dev->dmasound.lock);
 513                 if (dev->dmasound.recording_on)
 514                         dsp_rec_stop(dev);
 515                 up(&dev->dmasound.lock);
 516                 return 0;
 517         case SNDCTL_DSP_GETBLKSIZE:
 518                 return put_user(dev->dmasound.blksize, p);
 519
 520         case SNDCTL_DSP_SETFRAGMENT:
 521                 if (get_user(val, p))
 522                         return -EFAULT;
 523                 if (dev->dmasound.recording_on)
 524                         return -EBUSY;
 525                 dsp_buffer_free(dev);
 526                 /* used to be arg >> 16 instead of val >> 16; fixed */
 527                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 528                 dsp_buffer_init(dev);
 529                 return 0;
 530
 531         case SNDCTL_DSP_SYNC:
 532                 /* NOP */
 533                 return 0;
 534
 535         case SNDCTL_DSP_GETISPACE:
 536         {
 537                 audio_buf_info info;
 538                 info.fragsize   = dev->dmasound.blksize;
 539                 info.fragstotal = dev->dmasound.blocks;
 540                 info.bytes      = dev->dmasound.read_count;
 541                 info.fragments  = info.bytes / info.fragsize;
 542                 if (copy_to_user(argp, &info, sizeof(info)))
 543                         return -EFAULT;
 544                 return 0;
 545         }
 546         default:
 547                 return -EINVAL;
 548         }
 549 }
 550
 551 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 552 {
 553         struct saa7134_dev *dev = file->private_data;
 554         unsigned int mask = 0;
 555
 556         poll_wait(file, &dev->dmasound.wq, wait);
 557
 558         if (0 == dev->dmasound.read_count) {
 559                 down(&dev->dmasound.lock);
 560                 if (!dev->dmasound.recording_on)
 561                         dsp_rec_start(dev);
 562                 up(&dev->dmasound.lock);
 563         } else
 564                 mask |= (POLLIN | POLLRDNORM);
 565         return mask;
 566 }
 567
 568 struct file_operations saa7134_dsp_fops = {
 569         .owner   = THIS_MODULE,
 570         .open    = dsp_open,
 571         .release = dsp_release,
 572         .read    = dsp_read,
 573         .write   = dsp_write,
 574         .ioctl   = dsp_ioctl,
 575         .poll    = dsp_poll,
 576         .llseek  = no_llseek,
 577 };
 578
 579 /* ------------------------------------------------------------------ */
 580
 581 static int
 582 mixer_recsrc_7134(struct saa7134_dev *dev)
 583 {
 584         int analog_io,rate;
 585
 586         switch (dev->dmasound.input) {
 587         case TV:
 588                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 589                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 590                 break;
 591         case LINE1:
 592         case LINE2:
 593         case LINE2_LEFT:
 594                 analog_io = (LINE1 == dev->dmasound.input) ? 0x00 : 0x08;
 595                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
 596                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 597                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 598                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 599                 break;
 600         }
 601         return 0;
 602 }
 603
 604 static int
 605 mixer_recsrc_7133(struct saa7134_dev *dev)
 606 {
 607         u32 anabar, xbarin;
 608
 609         xbarin = 0x03; // adc
 610     anabar = 0;
 611         switch (dev->dmasound.input) {
 612         case TV:
 613                 xbarin = 0; // Demodulator
 614         anabar = 2; // DACs
 615                 break;
 616         case LINE1:
 617                 anabar = 0;  // aux1, aux1
 618                 break;
 619         case LINE2:
 620         case LINE2_LEFT:
 621                 anabar = 9;  // aux2, aux2
 622                 break;
 623         }
 624     /* output xbar always main channel */
 625         saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
 626         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 627         saa_writel(0x594 >> 2, anabar);
 628
 629         return 0;
 630 }
 631
 632 static int
 633 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 634 {
 635         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 636
 637         dev->dmasound.count++;
 638         dev->dmasound.input = src;
 639         dprintk("mixer input = %s\n",iname[dev->dmasound.input]);
 640
 641         switch (dev->pci->device) {
 642         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 643                 mixer_recsrc_7134(dev);
 644                 break;
 645         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 646         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 647                 mixer_recsrc_7133(dev);
 648                 break;
 649         }
 650         return 0;
 651 }
 652
 653 static int
 654 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 655 {
 656         switch (dev->pci->device) {
 657         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 658                 switch (src) {
 659                 case TV:
 660                         /* nothing */
 661                         break;
 662                 case LINE1:
 663                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 664                                    (100 == level) ? 0x00 : 0x10);
 665                         break;
 666                 case LINE2:
 667                 case LINE2_LEFT:
 668                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 669                                    (100 == level) ? 0x00 : 0x20);
 670                         break;
 671                 }
 672                 break;
 673         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 674         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 675                 /* nothing */
 676                 break;
 677         }
 678         return 0;
 679 }
 680
 681 /* ------------------------------------------------------------------ */
 682
 683 static int mixer_open(struct inode *inode, struct file *file)
 684 {
 685         int minor = iminor(inode);
 686         struct saa7134_dev *h,*dev = NULL;
 687         struct list_head *list;
 688
 689         list_for_each(list,&saa7134_devlist) {
 690                 h = list_entry(list, struct saa7134_dev, devlist);
 691                 if (h->dmasound.minor_mixer == minor)
 692                         dev = h;
 693         }
 694         if (NULL == dev)
 695                 return -ENODEV;
 696
 697         file->private_data = dev;
 698         return 0;
 699 }
 700
 701 static int mixer_release(struct inode *inode, struct file *file)
 702 {
 703         file->private_data = NULL;
 704         return 0;
 705 }
 706
 707 static int mixer_ioctl(struct inode *inode, struct file *file,
 708                      unsigned int cmd, unsigned long arg)
 709 {
 710         struct saa7134_dev *dev = file->private_data;
 711         enum saa7134_audio_in input;
 712         int val,ret;
 713         void __user *argp = (void __user *) arg;
 714         int __user *p = argp;
 715
 716         if (debug > 1)
 717                 saa7134_oss_print_ioctl(dev->name,cmd);
 718         switch (cmd) {
 719         case OSS_GETVERSION:
 720                 return put_user(SOUND_VERSION, p);
 721         case SOUND_MIXER_INFO:
 722         {
 723                 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                 info.modify_counter = dev->dmasound.count;
 728                 if (copy_to_user(argp, &info, sizeof(info)))
 729                         return -EFAULT;
 730                 return 0;
 731         }
 732         case SOUND_OLD_MIXER_INFO:
 733         {
 734                 _old_mixer_info info;
 735                 memset(&info,0,sizeof(info));
 736                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 737                 strlcpy(info.name, dev->name,  sizeof(info.name));
 738                 if (copy_to_user(argp, &info, sizeof(info)))
 739                         return -EFAULT;
 740                 return 0;
 741         }
 742         case MIXER_READ(SOUND_MIXER_CAPS):
 743                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 744         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 745                 return put_user(0, p);
 746         case MIXER_READ(SOUND_MIXER_RECMASK):
 747         case MIXER_READ(SOUND_MIXER_DEVMASK):
 748                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 749                 if (32000 == dev->dmasound.rate)
 750                         val |= SOUND_MASK_VIDEO;
 751                 return put_user(val, p);
 752
 753         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 754                 if (get_user(val, p))
 755                         return -EFAULT;
 756                 input = dev->dmasound.input;
 757                 if (32000 == dev->dmasound.rate  &&
 758                     val & SOUND_MASK_VIDEO  &&  dev->dmasound.input != TV)
 759                         input = TV;
 760                 if (val & SOUND_MASK_LINE1  &&  dev->dmasound.input != LINE1)
 761                         input = LINE1;
 762                 if (val & SOUND_MASK_LINE2  &&  dev->dmasound.input != LINE2)
 763                         input = LINE2;
 764                 if (input != dev->dmasound.input)
 765                         mixer_recsrc(dev,input);
 766                 /* fall throuth */
 767         case MIXER_READ(SOUND_MIXER_RECSRC):
 768                 switch (dev->dmasound.input) {
 769                 case TV:    ret = SOUND_MASK_VIDEO; break;
 770                 case LINE1: ret = SOUND_MASK_LINE1; break;
 771                 case LINE2: ret = SOUND_MASK_LINE2; break;
 772                 default:    ret = 0;
 773                 }
 774                 return put_user(ret, p);
 775
 776         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 777         case MIXER_READ(SOUND_MIXER_VIDEO):
 778                 if (32000 != dev->dmasound.rate)
 779                         return -EINVAL;
 780                 return put_user(100 | 100 << 8, p);
 781
 782         case MIXER_WRITE(SOUND_MIXER_LINE1):
 783                 if (get_user(val, p))
 784                         return -EFAULT;
 785                 val &= 0xff;
 786                 val = (val <= 50) ? 50 : 100;
 787                 dev->dmasound.line1 = val;
 788                 mixer_level(dev,LINE1,dev->dmasound.line1);
 789                 /* fall throuth */
 790         case MIXER_READ(SOUND_MIXER_LINE1):
 791                 return put_user(dev->dmasound.line1 | dev->dmasound.line1 << 8, p);
 792
 793         case MIXER_WRITE(SOUND_MIXER_LINE2):
 794                 if (get_user(val, p))
 795                         return -EFAULT;
 796                 val &= 0xff;
 797                 val = (val <= 50) ? 50 : 100;
 798                 dev->dmasound.line2 = val;
 799                 mixer_level(dev,LINE2,dev->dmasound.line2);
 800                 /* fall throuth */
 801         case MIXER_READ(SOUND_MIXER_LINE2):
 802                 return put_user(dev->dmasound.line2 | dev->dmasound.line2 << 8, p);
 803
 804         default:
 805                 return -EINVAL;
 806         }
 807 }
 808
 809 struct file_operations saa7134_mixer_fops = {
 810         .owner   = THIS_MODULE,
 811         .open    = mixer_open,
 812         .release = mixer_release,
 813         .ioctl   = mixer_ioctl,
 814         .llseek  = no_llseek,
 815 };
 816
 817 /* ------------------------------------------------------------------ */
 818
 819 static irqreturn_t saa7134_oss_irq(int irq, void *dev_id, struct pt_regs *regs)
 820 {
 821         struct saa7134_dmasound *dmasound = dev_id;
 822         struct saa7134_dev *dev = dmasound->priv_data;
 823         unsigned long report, status;
 824         int loop, handled = 0;
 825
 826         for (loop = 0; loop < 10; loop++) {
 827                 report = saa_readl(SAA7134_IRQ_REPORT);
 828                 status = saa_readl(SAA7134_IRQ_STATUS);
 829
 830                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
 831                         handled = 1;
 832                         saa_writel(SAA7134_IRQ_REPORT,report);
 833                         saa7134_irq_oss_done(dev, status);
 834                 } else {
 835                         goto out;
 836                 }
 837         }
 838
 839         if (loop == 10) {
 840                 dprintk("error! looping IRQ!");
 841         }
 842 out:
 843         return IRQ_RETVAL(handled);
 844 }
 845
 846 int saa7134_oss_init1(struct saa7134_dev *dev)
 847 {
 848
 849         if ((request_irq(dev->pci->irq, saa7134_oss_irq,
 850                          SA_SHIRQ | SA_INTERRUPT, dev->name,
 851                         (void*) &dev->dmasound)) < 0)
 852                 return -1;
 853
 854         /* general */
 855         init_MUTEX(&dev->dmasound.lock);
 856         init_waitqueue_head(&dev->dmasound.wq);
 857
 858         switch (dev->pci->device) {
 859         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 860         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 861                 saa_writel(0x588 >> 2, 0x00000fff);
 862                 saa_writel(0x58c >> 2, 0x00543210);
 863                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 864                 break;
 865         }
 866
 867         /* dsp */
 868         dev->dmasound.rate = 32000;
 869         if (rate)
 870                 dev->dmasound.rate = rate;
 871         dev->dmasound.rate = (dev->dmasound.rate > 40000) ? 48000 : 32000;
 872
 873         /* mixer */
 874         dev->dmasound.line1 = 50;
 875         dev->dmasound.line2 = 50;
 876         mixer_level(dev,LINE1,dev->dmasound.line1);
 877         mixer_level(dev,LINE2,dev->dmasound.line2);
 878         mixer_recsrc(dev, (dev->dmasound.rate == 32000) ? TV : LINE2);
 879
 880         return 0;
 881 }
 882
 883 int saa7134_oss_fini(struct saa7134_dev *dev)
 884 {
 885         /* nothing */
 886         return 0;
 887 }
 888
 889 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 890 {
 891         int next_blk, reg = 0;
 892
 893         spin_lock(&dev->slock);
 894         if (UNSET == dev->dmasound.dma_blk) {
 895                 dprintk("irq: recording stopped\n");
 896                 goto done;
 897         }
 898         if (0 != (status & 0x0f000000))
 899                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 900         if (0 == (status & 0x10000000)) {
 901                 /* odd */
 902                 if (0 == (dev->dmasound.dma_blk & 0x01))
 903                         reg = SAA7134_RS_BA1(6);
 904         } else {
 905                 /* even */
 906                 if (1 == (dev->dmasound.dma_blk & 0x01))
 907                         reg = SAA7134_RS_BA2(6);
 908         }
 909         if (0 == reg) {
 910                 dprintk("irq: field oops [%s]\n",
 911                         (status & 0x10000000) ? "even" : "odd");
 912                 goto done;
 913         }
 914         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
 915                 dprintk("irq: overrun [full=%d/%d]\n",dev->dmasound.read_count,
 916                         dev->dmasound.bufsize);
 917                 dsp_dma_stop(dev);
 918                 goto done;
 919         }
 920
 921         /* next block addr */
 922         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
 923         saa_writel(reg,next_blk * dev->dmasound.blksize);
 924         if (debug > 2)
 925                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 926                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 927                         next_blk * dev->dmasound.blksize);
 928
 929         /* update status & wake waiting readers */
 930         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
 931         dev->dmasound.read_count += dev->dmasound.blksize;
 932         wake_up(&dev->dmasound.wq);
 933
 934  done:
 935         spin_unlock(&dev->slock);
 936 }
 937
 938 static int saa7134_dsp_create(struct saa7134_dev *dev)
 939 {
 940         int err;
 941
 942         err = dev->dmasound.minor_dsp =
 943                 register_sound_dsp(&saa7134_dsp_fops,
 944                                    dsp_nr[dev->nr]);
 945         if (err < 0) {
 946                 goto fail;
 947         }
 948         printk(KERN_INFO "%s: registered device dsp%d\n",
 949                dev->name,dev->dmasound.minor_dsp >> 4);
 950
 951         err = dev->dmasound.minor_mixer =
 952                 register_sound_mixer(&saa7134_mixer_fops,
 953                                      mixer_nr[dev->nr]);
 954         if (err < 0)
 955                 goto fail;
 956         printk(KERN_INFO "%s: registered device mixer%d\n",
 957                dev->name,dev->dmasound.minor_mixer >> 4);
 958
 959         return 0;
 960
 961 fail:
 962         unregister_sound_dsp(dev->dmasound.minor_dsp);
 963         return 0;
 964
 965
 966 }
 967
 968 static int oss_device_init(struct saa7134_dev *dev)
 969 {
 970         dev->dmasound.priv_data = dev;
 971         saa7134_oss_init1(dev);
 972         saa7134_dsp_create(dev);
 973         return 1;
 974 }
 975
 976 static int oss_device_exit(struct saa7134_dev *dev)
 977 {
 978
 979         unregister_sound_mixer(dev->dmasound.minor_mixer);
 980         unregister_sound_dsp(dev->dmasound.minor_dsp);
 981
 982         saa7134_oss_fini(dev);
 983
 984         if (dev->pci->irq > 0) {
 985                 synchronize_irq(dev->pci->irq);
 986                 free_irq(dev->pci->irq,&dev->dmasound);
 987         }
 988
 989         dev->dmasound.priv_data = NULL;
 990         return 1;
 991 }
 992
 993 static int saa7134_oss_init(void)
 994 {
 995         struct saa7134_dev *dev = NULL;
 996         struct list_head *list;
 997
 998         if (!dmasound_init && !dmasound_exit) {
 999                 dmasound_init = oss_device_init;
1000                 dmasound_exit = oss_device_exit;
1001         } else {
1002                 printk(KERN_WARNING "saa7134 OSS: can't load, DMA sound handler already assigned (probably to ALSA)\n");
1003                 return -EBUSY;
1004         }
1005
1006         printk(KERN_INFO "saa7134 OSS driver for DMA sound loaded\n");
1007
1008
1009         list_for_each(list,&saa7134_devlist) {
1010                 dev = list_entry(list, struct saa7134_dev, devlist);
1011                 if (dev->dmasound.priv_data == NULL) {
1012                         oss_device_init(dev);
1013                 } else {
1014                         printk(KERN_ERR "saa7134 OSS: DMA sound is being handled by ALSA, ignoring %s\n",dev->name);
1015                         return -EBUSY;
1016                 }
1017         }
1018
1019         if (dev == NULL)
1020                 printk(KERN_INFO "saa7134 OSS: no saa7134 cards found\n");
1021
1022         return 0;
1023
1024 }
1025
1026 static void saa7134_oss_exit(void)
1027 {
1028         struct saa7134_dev *dev = NULL;
1029         struct list_head *list;
1030
1031         list_for_each(list,&saa7134_devlist) {
1032                 dev = list_entry(list, struct saa7134_dev, devlist);
1033
1034                 /* Device isn't registered by OSS, probably ALSA's */
1035                 if (!dev->dmasound.minor_dsp)
1036                         continue;
1037
1038                 oss_device_exit(dev);
1039
1040         }
1041
1042         dmasound_init = NULL;
1043         dmasound_exit = NULL;
1044
1045         printk(KERN_INFO "saa7134 OSS driver for DMA sound unloaded\n");
1046
1047         return;
1048 }
1049
1050 /* We initialize this late, to make sure the sound system is up and running */
1051 late_initcall(saa7134_oss_init);
1052 module_exit(saa7134_oss_exit);
1053 MODULE_LICENSE("GPL");
1054 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
1055
1056 /* ----------------------------------------------------------- */
1057 /*
1058  * Local variables:
1059  * c-basic-offset: 8
1060  * End:
1061  */