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