SAFE public projects git trees. - safe/jmp/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/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 *h,*dev = NULL;
 243         struct list_head *list;
 244         int err;
 245
 246         list_for_each(list,&saa7134_devlist) {
 247                 h = list_entry(list, struct saa7134_dev, devlist);
 248                 if (h->dmasound.minor_dsp == minor)
 249                         dev = h;
 250         }
 251         if (NULL == dev)
 252                 return -ENODEV;
 253
 254         mutex_lock(&dev->dmasound.lock);
 255         err = -EBUSY;
 256         if (dev->dmasound.users_dsp)
 257                 goto fail1;
 258         dev->dmasound.users_dsp++;
 259         file->private_data = dev;
 260
 261         dev->dmasound.afmt        = AFMT_U8;
 262         dev->dmasound.channels    = 1;
 263         dev->dmasound.read_count  = 0;
 264         dev->dmasound.read_offset = 0;
 265         dsp_buffer_conf(dev,PAGE_SIZE,64);
 266         err = dsp_buffer_init(dev);
 267         if (0 != err)
 268                 goto fail2;
 269
 270         mutex_unlock(&dev->dmasound.lock);
 271         return 0;
 272
 273  fail2:
 274         dev->dmasound.users_dsp--;
 275  fail1:
 276         mutex_unlock(&dev->dmasound.lock);
 277         return err;
 278 }
 279
 280 static int dsp_release(struct inode *inode, struct file *file)
 281 {
 282         struct saa7134_dev *dev = file->private_data;
 283
 284         mutex_lock(&dev->dmasound.lock);
 285         if (dev->dmasound.recording_on)
 286                 dsp_rec_stop(dev);
 287         dsp_buffer_free(dev);
 288         dev->dmasound.users_dsp--;
 289         file->private_data = NULL;
 290         mutex_unlock(&dev->dmasound.lock);
 291         return 0;
 292 }
 293
 294 static ssize_t dsp_read(struct file *file, char __user *buffer,
 295                         size_t count, loff_t *ppos)
 296 {
 297         struct saa7134_dev *dev = file->private_data;
 298         DECLARE_WAITQUEUE(wait, current);
 299         unsigned int bytes;
 300         unsigned long flags;
 301         int err,ret = 0;
 302
 303         add_wait_queue(&dev->dmasound.wq, &wait);
 304         mutex_lock(&dev->dmasound.lock);
 305         while (count > 0) {
 306                 /* wait for data if needed */
 307                 if (0 == dev->dmasound.read_count) {
 308                         if (!dev->dmasound.recording_on) {
 309                                 err = dsp_rec_start(dev);
 310                                 if (err < 0) {
 311                                         if (0 == ret)
 312                                                 ret = err;
 313                                         break;
 314                                 }
 315                         }
 316                         if (dev->dmasound.recording_on &&
 317                             !dev->dmasound.dma_running) {
 318                                 /* recover from overruns */
 319                                 spin_lock_irqsave(&dev->slock,flags);
 320                                 dsp_dma_start(dev);
 321                                 spin_unlock_irqrestore(&dev->slock,flags);
 322                         }
 323                         if (file->f_flags & O_NONBLOCK) {
 324                                 if (0 == ret)
 325                                         ret = -EAGAIN;
 326                                 break;
 327                         }
 328                         mutex_unlock(&dev->dmasound.lock);
 329                         set_current_state(TASK_INTERRUPTIBLE);
 330                         if (0 == dev->dmasound.read_count)
 331                                 schedule();
 332                         set_current_state(TASK_RUNNING);
 333                         mutex_lock(&dev->dmasound.lock);
 334                         if (signal_pending(current)) {
 335                                 if (0 == ret)
 336                                         ret = -EINTR;
 337                                 break;
 338                         }
 339                 }
 340
 341                 /* copy data to userspace */
 342                 bytes = count;
 343                 if (bytes > dev->dmasound.read_count)
 344                         bytes = dev->dmasound.read_count;
 345                 if (bytes > dev->dmasound.bufsize - dev->dmasound.read_offset)
 346                         bytes = dev->dmasound.bufsize - dev->dmasound.read_offset;
 347                 if (copy_to_user(buffer + ret,
 348                                  dev->dmasound.dma.vmalloc + dev->dmasound.read_offset,
 349                                  bytes)) {
 350                         if (0 == ret)
 351                                 ret = -EFAULT;
 352                         break;
 353                 }
 354
 355                 ret   += bytes;
 356                 count -= bytes;
 357                 dev->dmasound.read_count  -= bytes;
 358                 dev->dmasound.read_offset += bytes;
 359                 if (dev->dmasound.read_offset == dev->dmasound.bufsize)
 360                         dev->dmasound.read_offset = 0;
 361         }
 362         mutex_unlock(&dev->dmasound.lock);
 363         remove_wait_queue(&dev->dmasound.wq, &wait);
 364         return ret;
 365 }
 366
 367 static ssize_t dsp_write(struct file *file, const char __user *buffer,
 368                          size_t count, loff_t *ppos)
 369 {
 370         return -EINVAL;
 371 }
 372
 373 static const char *osspcm_ioctls[] = {
 374         "RESET", "SYNC", "SPEED", "STEREO", "GETBLKSIZE", "SETFMT",
 375         "CHANNELS", "?", "POST", "SUBDIVIDE", "SETFRAGMENT", "GETFMTS",
 376         "GETOSPACE", "GETISPACE", "NONBLOCK", "GETCAPS", "GET/SETTRIGGER",
 377         "GETIPTR", "GETOPTR", "MAPINBUF", "MAPOUTBUF", "SETSYNCRO",
 378         "SETDUPLEX", "GETODELAY"
 379 };
 380 #define OSSPCM_IOCTLS ARRAY_SIZE(osspcm_ioctls)
 381
 382 static void saa7134_oss_print_ioctl(char *name, unsigned int cmd)
 383 {
 384         char *dir;
 385
 386         switch (_IOC_DIR(cmd)) {
 387         case _IOC_NONE:              dir = "--"; break;
 388         case _IOC_READ:              dir = "r-"; break;
 389         case _IOC_WRITE:             dir = "-w"; break;
 390         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 391         default:                     dir = "??"; break;
 392         }
 393         switch (_IOC_TYPE(cmd)) {
 394         case 'P':
 395                 printk(KERN_DEBUG "%s: ioctl 0x%08x (oss dsp, %s, SNDCTL_DSP_%s)\n",
 396                        name, cmd, dir, (_IOC_NR(cmd) < OSSPCM_IOCTLS) ?
 397                        osspcm_ioctls[_IOC_NR(cmd)] : "???");
 398                 break;
 399         case 'M':
 400                 printk(KERN_DEBUG "%s: ioctl 0x%08x (oss mixer, %s, #%d)\n",
 401                        name, cmd, dir, _IOC_NR(cmd));
 402                 break;
 403         default:
 404                 printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
 405                        name, cmd, dir, _IOC_NR(cmd));
 406         }
 407 }
 408
 409 static int dsp_ioctl(struct inode *inode, struct file *file,
 410                      unsigned int cmd, unsigned long arg)
 411 {
 412         struct saa7134_dev *dev = file->private_data;
 413         void __user *argp = (void __user *) arg;
 414         int __user *p = argp;
 415         int val = 0;
 416
 417         if (debug > 1)
 418                 saa7134_oss_print_ioctl(dev->name,cmd);
 419         switch (cmd) {
 420         case OSS_GETVERSION:
 421                 return put_user(SOUND_VERSION, p);
 422         case SNDCTL_DSP_GETCAPS:
 423                 return 0;
 424
 425         case SNDCTL_DSP_SPEED:
 426                 if (get_user(val, p))
 427                         return -EFAULT;
 428                 /* fall through */
 429         case SOUND_PCM_READ_RATE:
 430                 return put_user(dev->dmasound.rate, p);
 431
 432         case SNDCTL_DSP_STEREO:
 433                 if (get_user(val, p))
 434                         return -EFAULT;
 435                 mutex_lock(&dev->dmasound.lock);
 436                 dev->dmasound.channels = val ? 2 : 1;
 437                 if (dev->dmasound.recording_on) {
 438                         dsp_rec_stop(dev);
 439                         dsp_rec_start(dev);
 440                 }
 441                 mutex_unlock(&dev->dmasound.lock);
 442                 return put_user(dev->dmasound.channels-1, p);
 443
 444         case SNDCTL_DSP_CHANNELS:
 445                 if (get_user(val, p))
 446                         return -EFAULT;
 447                 if (val != 1 && val != 2)
 448                         return -EINVAL;
 449                 mutex_lock(&dev->dmasound.lock);
 450                 dev->dmasound.channels = val;
 451                 if (dev->dmasound.recording_on) {
 452                         dsp_rec_stop(dev);
 453                         dsp_rec_start(dev);
 454                 }
 455                 mutex_unlock(&dev->dmasound.lock);
 456                 /* fall through */
 457         case SOUND_PCM_READ_CHANNELS:
 458                 return put_user(dev->dmasound.channels, p);
 459
 460         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 461                 return put_user(AFMT_U8     | AFMT_S8     |
 462                                 AFMT_U16_LE | AFMT_U16_BE |
 463                                 AFMT_S16_LE | AFMT_S16_BE, p);
 464
 465         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 466                 if (get_user(val, p))
 467                         return -EFAULT;
 468                 switch (val) {
 469                 case AFMT_QUERY:
 470                         /* nothing to do */
 471                         break;
 472                 case AFMT_U8:
 473                 case AFMT_S8:
 474                 case AFMT_U16_LE:
 475                 case AFMT_U16_BE:
 476                 case AFMT_S16_LE:
 477                 case AFMT_S16_BE:
 478                         mutex_lock(&dev->dmasound.lock);
 479                         dev->dmasound.afmt = val;
 480                         if (dev->dmasound.recording_on) {
 481                                 dsp_rec_stop(dev);
 482                                 dsp_rec_start(dev);
 483                         }
 484                         mutex_unlock(&dev->dmasound.lock);
 485                         return put_user(dev->dmasound.afmt, p);
 486                 default:
 487                         return -EINVAL;
 488                 }
 489
 490         case SOUND_PCM_READ_BITS:
 491                 switch (dev->dmasound.afmt) {
 492                 case AFMT_U8:
 493                 case AFMT_S8:
 494                         return put_user(8, p);
 495                 case AFMT_U16_LE:
 496                 case AFMT_U16_BE:
 497                 case AFMT_S16_LE:
 498                 case AFMT_S16_BE:
 499                         return put_user(16, p);
 500                 default:
 501                         return -EINVAL;
 502                 }
 503
 504         case SNDCTL_DSP_NONBLOCK:
 505                 file->f_flags |= O_NONBLOCK;
 506                 return 0;
 507
 508         case SNDCTL_DSP_RESET:
 509                 mutex_lock(&dev->dmasound.lock);
 510                 if (dev->dmasound.recording_on)
 511                         dsp_rec_stop(dev);
 512                 mutex_unlock(&dev->dmasound.lock);
 513                 return 0;
 514         case SNDCTL_DSP_GETBLKSIZE:
 515                 return put_user(dev->dmasound.blksize, p);
 516
 517         case SNDCTL_DSP_SETFRAGMENT:
 518                 if (get_user(val, p))
 519                         return -EFAULT;
 520                 if (dev->dmasound.recording_on)
 521                         return -EBUSY;
 522                 dsp_buffer_free(dev);
 523                 /* used to be arg >> 16 instead of val >> 16; fixed */
 524                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 525                 dsp_buffer_init(dev);
 526                 return 0;
 527
 528         case SNDCTL_DSP_SYNC:
 529                 /* NOP */
 530                 return 0;
 531
 532         case SNDCTL_DSP_GETISPACE:
 533         {
 534                 audio_buf_info info;
 535                 info.fragsize   = dev->dmasound.blksize;
 536                 info.fragstotal = dev->dmasound.blocks;
 537                 info.bytes      = dev->dmasound.read_count;
 538                 info.fragments  = info.bytes / info.fragsize;
 539                 if (copy_to_user(argp, &info, sizeof(info)))
 540                         return -EFAULT;
 541                 return 0;
 542         }
 543         default:
 544                 return -EINVAL;
 545         }
 546 }
 547
 548 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 549 {
 550         struct saa7134_dev *dev = file->private_data;
 551         unsigned int mask = 0;
 552
 553         poll_wait(file, &dev->dmasound.wq, wait);
 554
 555         if (0 == dev->dmasound.read_count) {
 556                 mutex_lock(&dev->dmasound.lock);
 557                 if (!dev->dmasound.recording_on)
 558                         dsp_rec_start(dev);
 559                 mutex_unlock(&dev->dmasound.lock);
 560         } else
 561                 mask |= (POLLIN | POLLRDNORM);
 562         return mask;
 563 }
 564
 565 const struct file_operations saa7134_dsp_fops = {
 566         .owner   = THIS_MODULE,
 567         .open    = dsp_open,
 568         .release = dsp_release,
 569         .read    = dsp_read,
 570         .write   = dsp_write,
 571         .ioctl   = dsp_ioctl,
 572         .poll    = dsp_poll,
 573         .llseek  = no_llseek,
 574 };
 575
 576 /* ------------------------------------------------------------------ */
 577
 578 static int
 579 mixer_recsrc_7134(struct saa7134_dev *dev)
 580 {
 581         int analog_io,rate;
 582
 583         switch (dev->dmasound.input) {
 584         case TV:
 585                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 586                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 587                 break;
 588         case LINE1:
 589         case LINE2:
 590         case LINE2_LEFT:
 591                 analog_io = (LINE1 == dev->dmasound.input) ? 0x00 : 0x08;
 592                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
 593                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 594                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 595                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 596                 break;
 597         }
 598         return 0;
 599 }
 600
 601 static int
 602 mixer_recsrc_7133(struct saa7134_dev *dev)
 603 {
 604         u32 anabar, xbarin;
 605
 606         xbarin = 0x03; // adc
 607     anabar = 0;
 608         switch (dev->dmasound.input) {
 609         case TV:
 610                 xbarin = 0; // Demodulator
 611         anabar = 2; // DACs
 612                 break;
 613         case LINE1:
 614                 anabar = 0;  // aux1, aux1
 615                 break;
 616         case LINE2:
 617         case LINE2_LEFT:
 618                 anabar = 9;  // aux2, aux2
 619                 break;
 620         }
 621     /* output xbar always main channel */
 622         saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
 623         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 624         saa_writel(0x594 >> 2, anabar);
 625
 626         return 0;
 627 }
 628
 629 static int
 630 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 631 {
 632         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 633
 634         dev->dmasound.count++;
 635         dev->dmasound.input = src;
 636         dprintk("mixer input = %s\n",iname[dev->dmasound.input]);
 637
 638         switch (dev->pci->device) {
 639         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 640                 mixer_recsrc_7134(dev);
 641                 break;
 642         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 643         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 644                 mixer_recsrc_7133(dev);
 645                 break;
 646         }
 647         return 0;
 648 }
 649
 650 static int
 651 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 652 {
 653         switch (dev->pci->device) {
 654         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 655                 switch (src) {
 656                 case TV:
 657                         /* nothing */
 658                         break;
 659                 case LINE1:
 660                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 661                                    (100 == level) ? 0x00 : 0x10);
 662                         break;
 663                 case LINE2:
 664                 case LINE2_LEFT:
 665                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 666                                    (100 == level) ? 0x00 : 0x20);
 667                         break;
 668                 }
 669                 break;
 670         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 671         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 672                 /* nothing */
 673                 break;
 674         }
 675         return 0;
 676 }
 677
 678 /* ------------------------------------------------------------------ */
 679
 680 static int mixer_open(struct inode *inode, struct file *file)
 681 {
 682         int minor = iminor(inode);
 683         struct saa7134_dev *h,*dev = NULL;
 684         struct list_head *list;
 685
 686         list_for_each(list,&saa7134_devlist) {
 687                 h = list_entry(list, struct saa7134_dev, devlist);
 688                 if (h->dmasound.minor_mixer == minor)
 689                         dev = h;
 690         }
 691         if (NULL == dev)
 692                 return -ENODEV;
 693
 694         file->private_data = dev;
 695         return 0;
 696 }
 697
 698 static int mixer_release(struct inode *inode, struct file *file)
 699 {
 700         file->private_data = NULL;
 701         return 0;
 702 }
 703
 704 static int mixer_ioctl(struct inode *inode, struct file *file,
 705                      unsigned int cmd, unsigned long arg)
 706 {
 707         struct saa7134_dev *dev = file->private_data;
 708         enum saa7134_audio_in input;
 709         int val,ret;
 710         void __user *argp = (void __user *) arg;
 711         int __user *p = argp;
 712
 713         if (debug > 1)
 714                 saa7134_oss_print_ioctl(dev->name,cmd);
 715         switch (cmd) {
 716         case OSS_GETVERSION:
 717                 return put_user(SOUND_VERSION, p);
 718         case SOUND_MIXER_INFO:
 719         {
 720                 mixer_info info;
 721                 memset(&info,0,sizeof(info));
 722                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 723                 strlcpy(info.name, dev->name,  sizeof(info.name));
 724                 info.modify_counter = dev->dmasound.count;
 725                 if (copy_to_user(argp, &info, sizeof(info)))
 726                         return -EFAULT;
 727                 return 0;
 728         }
 729         case SOUND_OLD_MIXER_INFO:
 730         {
 731                 _old_mixer_info info;
 732                 memset(&info,0,sizeof(info));
 733                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 734                 strlcpy(info.name, dev->name,  sizeof(info.name));
 735                 if (copy_to_user(argp, &info, sizeof(info)))
 736                         return -EFAULT;
 737                 return 0;
 738         }
 739         case MIXER_READ(SOUND_MIXER_CAPS):
 740                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 741         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 742                 return put_user(0, p);
 743         case MIXER_READ(SOUND_MIXER_RECMASK):
 744         case MIXER_READ(SOUND_MIXER_DEVMASK):
 745                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 746                 if (32000 == dev->dmasound.rate)
 747                         val |= SOUND_MASK_VIDEO;
 748                 return put_user(val, p);
 749
 750         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 751                 if (get_user(val, p))
 752                         return -EFAULT;
 753                 input = dev->dmasound.input;
 754                 if (32000 == dev->dmasound.rate  &&
 755                     val & SOUND_MASK_VIDEO  &&  dev->dmasound.input != TV)
 756                         input = TV;
 757                 if (val & SOUND_MASK_LINE1  &&  dev->dmasound.input != LINE1)
 758                         input = LINE1;
 759                 if (val & SOUND_MASK_LINE2  &&  dev->dmasound.input != LINE2)
 760                         input = LINE2;
 761                 if (input != dev->dmasound.input)
 762                         mixer_recsrc(dev,input);
 763                 /* fall throuth */
 764         case MIXER_READ(SOUND_MIXER_RECSRC):
 765                 switch (dev->dmasound.input) {
 766                 case TV:    ret = SOUND_MASK_VIDEO; break;
 767                 case LINE1: ret = SOUND_MASK_LINE1; break;
 768                 case LINE2: ret = SOUND_MASK_LINE2; break;
 769                 default:    ret = 0;
 770                 }
 771                 return put_user(ret, p);
 772
 773         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 774         case MIXER_READ(SOUND_MIXER_VIDEO):
 775                 if (32000 != dev->dmasound.rate)
 776                         return -EINVAL;
 777                 return put_user(100 | 100 << 8, p);
 778
 779         case MIXER_WRITE(SOUND_MIXER_LINE1):
 780                 if (get_user(val, p))
 781                         return -EFAULT;
 782                 val &= 0xff;
 783                 val = (val <= 50) ? 50 : 100;
 784                 dev->dmasound.line1 = val;
 785                 mixer_level(dev,LINE1,dev->dmasound.line1);
 786                 /* fall throuth */
 787         case MIXER_READ(SOUND_MIXER_LINE1):
 788                 return put_user(dev->dmasound.line1 | dev->dmasound.line1 << 8, p);
 789
 790         case MIXER_WRITE(SOUND_MIXER_LINE2):
 791                 if (get_user(val, p))
 792                         return -EFAULT;
 793                 val &= 0xff;
 794                 val = (val <= 50) ? 50 : 100;
 795                 dev->dmasound.line2 = val;
 796                 mixer_level(dev,LINE2,dev->dmasound.line2);
 797                 /* fall throuth */
 798         case MIXER_READ(SOUND_MIXER_LINE2):
 799                 return put_user(dev->dmasound.line2 | dev->dmasound.line2 << 8, p);
 800
 801         default:
 802                 return -EINVAL;
 803         }
 804 }
 805
 806 const struct file_operations saa7134_mixer_fops = {
 807         .owner   = THIS_MODULE,
 808         .open    = mixer_open,
 809         .release = mixer_release,
 810         .ioctl   = mixer_ioctl,
 811         .llseek  = no_llseek,
 812 };
 813
 814 /* ------------------------------------------------------------------ */
 815
 816 static irqreturn_t saa7134_oss_irq(int irq, void *dev_id)
 817 {
 818         struct saa7134_dmasound *dmasound = dev_id;
 819         struct saa7134_dev *dev = dmasound->priv_data;
 820         unsigned long report, status;
 821         int loop, handled = 0;
 822
 823         for (loop = 0; loop < 10; loop++) {
 824                 report = saa_readl(SAA7134_IRQ_REPORT);
 825                 status = saa_readl(SAA7134_IRQ_STATUS);
 826
 827                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
 828                         handled = 1;
 829                         saa_writel(SAA7134_IRQ_REPORT,report);
 830                         saa7134_irq_oss_done(dev, status);
 831                 } else {
 832                         goto out;
 833                 }
 834         }
 835
 836         if (loop == 10) {
 837                 dprintk("error! looping IRQ!");
 838         }
 839 out:
 840         return IRQ_RETVAL(handled);
 841 }
 842
 843 int saa7134_oss_init1(struct saa7134_dev *dev)
 844 {
 845
 846         if ((request_irq(dev->pci->irq, saa7134_oss_irq,
 847                          IRQF_SHARED | IRQF_DISABLED, dev->name,
 848                         (void*) &dev->dmasound)) < 0)
 849                 return -1;
 850
 851         /* general */
 852         mutex_init(&dev->dmasound.lock);
 853         init_waitqueue_head(&dev->dmasound.wq);
 854
 855         switch (dev->pci->device) {
 856         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 857         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 858                 saa_writel(0x588 >> 2, 0x00000fff);
 859                 saa_writel(0x58c >> 2, 0x00543210);
 860                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 861                 break;
 862         }
 863
 864         /* dsp */
 865         dev->dmasound.rate = 32000;
 866         if (rate)
 867                 dev->dmasound.rate = rate;
 868         dev->dmasound.rate = (dev->dmasound.rate > 40000) ? 48000 : 32000;
 869
 870         /* mixer */
 871         dev->dmasound.line1 = 50;
 872         dev->dmasound.line2 = 50;
 873         mixer_level(dev,LINE1,dev->dmasound.line1);
 874         mixer_level(dev,LINE2,dev->dmasound.line2);
 875         mixer_recsrc(dev, (dev->dmasound.rate == 32000) ? TV : LINE2);
 876
 877         return 0;
 878 }
 879
 880 int saa7134_oss_fini(struct saa7134_dev *dev)
 881 {
 882         /* nothing */
 883         return 0;
 884 }
 885
 886 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 887 {
 888         int next_blk, reg = 0;
 889
 890         spin_lock(&dev->slock);
 891         if (UNSET == dev->dmasound.dma_blk) {
 892                 dprintk("irq: recording stopped\n");
 893                 goto done;
 894         }
 895         if (0 != (status & 0x0f000000))
 896                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 897         if (0 == (status & 0x10000000)) {
 898                 /* odd */
 899                 if (0 == (dev->dmasound.dma_blk & 0x01))
 900                         reg = SAA7134_RS_BA1(6);
 901         } else {
 902                 /* even */
 903                 if (1 == (dev->dmasound.dma_blk & 0x01))
 904                         reg = SAA7134_RS_BA2(6);
 905         }
 906         if (0 == reg) {
 907                 dprintk("irq: field oops [%s]\n",
 908                         (status & 0x10000000) ? "even" : "odd");
 909                 goto done;
 910         }
 911         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
 912                 dprintk("irq: overrun [full=%d/%d]\n",dev->dmasound.read_count,
 913                         dev->dmasound.bufsize);
 914                 dsp_dma_stop(dev);
 915                 goto done;
 916         }
 917
 918         /* next block addr */
 919         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
 920         saa_writel(reg,next_blk * dev->dmasound.blksize);
 921         if (debug > 2)
 922                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 923                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 924                         next_blk * dev->dmasound.blksize);
 925
 926         /* update status & wake waiting readers */
 927         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
 928         dev->dmasound.read_count += dev->dmasound.blksize;
 929         wake_up(&dev->dmasound.wq);
 930
 931  done:
 932         spin_unlock(&dev->slock);
 933 }
 934
 935 static int saa7134_dsp_create(struct saa7134_dev *dev)
 936 {
 937         int err;
 938
 939         err = dev->dmasound.minor_dsp =
 940                 register_sound_dsp(&saa7134_dsp_fops,
 941                                    dsp_nr[dev->nr]);
 942         if (err < 0) {
 943                 goto fail;
 944         }
 945         printk(KERN_INFO "%s: registered device dsp%d\n",
 946                dev->name,dev->dmasound.minor_dsp >> 4);
 947
 948         err = dev->dmasound.minor_mixer =
 949                 register_sound_mixer(&saa7134_mixer_fops,
 950                                      mixer_nr[dev->nr]);
 951         if (err < 0)
 952                 goto fail;
 953         printk(KERN_INFO "%s: registered device mixer%d\n",
 954                dev->name,dev->dmasound.minor_mixer >> 4);
 955
 956         return 0;
 957
 958 fail:
 959         unregister_sound_dsp(dev->dmasound.minor_dsp);
 960         return 0;
 961
 962
 963 }
 964
 965 static int oss_device_init(struct saa7134_dev *dev)
 966 {
 967         dev->dmasound.priv_data = dev;
 968         saa7134_oss_init1(dev);
 969         saa7134_dsp_create(dev);
 970         return 1;
 971 }
 972
 973 static int oss_device_exit(struct saa7134_dev *dev)
 974 {
 975
 976         unregister_sound_mixer(dev->dmasound.minor_mixer);
 977         unregister_sound_dsp(dev->dmasound.minor_dsp);
 978
 979         saa7134_oss_fini(dev);
 980
 981         if (dev->pci->irq > 0) {
 982                 synchronize_irq(dev->pci->irq);
 983                 free_irq(dev->pci->irq,&dev->dmasound);
 984         }
 985
 986         dev->dmasound.priv_data = NULL;
 987         return 1;
 988 }
 989
 990 static int saa7134_oss_init(void)
 991 {
 992         struct saa7134_dev *dev = NULL;
 993         struct list_head *list;
 994
 995         if (!saa7134_dmasound_init && !saa7134_dmasound_exit) {
 996                 saa7134_dmasound_init = oss_device_init;
 997                 saa7134_dmasound_exit = oss_device_exit;
 998         } else {
 999                 printk(KERN_WARNING "saa7134 OSS: can't load, DMA sound handler already assigned (probably to ALSA)\n");
1000                 return -EBUSY;
1001         }
1002
1003         printk(KERN_INFO "saa7134 OSS driver for DMA sound loaded\n");
1004
1005
1006         list_for_each(list,&saa7134_devlist) {
1007                 dev = list_entry(list, struct saa7134_dev, devlist);
1008                 if (dev->dmasound.priv_data == NULL) {
1009                         oss_device_init(dev);
1010                 } else {
1011                         printk(KERN_ERR "saa7134 OSS: DMA sound is being handled by ALSA, ignoring %s\n",dev->name);
1012                         return -EBUSY;
1013                 }
1014         }
1015
1016         if (dev == NULL)
1017                 printk(KERN_INFO "saa7134 OSS: no saa7134 cards found\n");
1018
1019         return 0;
1020
1021 }
1022
1023 static void saa7134_oss_exit(void)
1024 {
1025         struct saa7134_dev *dev = NULL;
1026         struct list_head *list;
1027
1028         list_for_each(list,&saa7134_devlist) {
1029                 dev = list_entry(list, struct saa7134_dev, devlist);
1030
1031                 /* Device isn't registered by OSS, probably ALSA's */
1032                 if (!dev->dmasound.minor_dsp)
1033                         continue;
1034
1035                 oss_device_exit(dev);
1036
1037         }
1038
1039         saa7134_dmasound_init = NULL;
1040         saa7134_dmasound_exit = NULL;
1041
1042         printk(KERN_INFO "saa7134 OSS driver for DMA sound unloaded\n");
1043
1044         return;
1045 }
1046
1047 /* We initialize this late, to make sure the sound system is up and running */
1048 late_initcall(saa7134_oss_init);
1049 module_exit(saa7134_oss_exit);
1050 MODULE_LICENSE("GPL");
1051 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
1052
1053 /* ----------------------------------------------------------- */
1054 /*
1055  * Local variables:
1056  * c-basic-offset: 8
1057  * End:
1058  */