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 int dsp_ioctl(struct inode *inode, struct file *file,
 377                      unsigned int cmd, unsigned long arg)
 378 {
 379         struct saa7134_dev *dev = file->private_data;
 380         void __user *argp = (void __user *) arg;
 381         int __user *p = argp;
 382         int val = 0;
 383
 384         if (debug > 1)
 385                 saa7134_print_ioctl(dev->name,cmd);
 386         switch (cmd) {
 387         case OSS_GETVERSION:
 388                 return put_user(SOUND_VERSION, p);
 389         case SNDCTL_DSP_GETCAPS:
 390                 return 0;
 391
 392         case SNDCTL_DSP_SPEED:
 393                 if (get_user(val, p))
 394                         return -EFAULT;
 395                 /* fall through */
 396         case SOUND_PCM_READ_RATE:
 397                 return put_user(dev->dmasound.rate, p);
 398
 399         case SNDCTL_DSP_STEREO:
 400                 if (get_user(val, p))
 401                         return -EFAULT;
 402                 down(&dev->dmasound.lock);
 403                 dev->dmasound.channels = val ? 2 : 1;
 404                 if (dev->dmasound.recording_on) {
 405                         dsp_rec_stop(dev);
 406                         dsp_rec_start(dev);
 407                 }
 408                 up(&dev->dmasound.lock);
 409                 return put_user(dev->dmasound.channels-1, p);
 410
 411         case SNDCTL_DSP_CHANNELS:
 412                 if (get_user(val, p))
 413                         return -EFAULT;
 414                 if (val != 1 && val != 2)
 415                         return -EINVAL;
 416                 down(&dev->dmasound.lock);
 417                 dev->dmasound.channels = val;
 418                 if (dev->dmasound.recording_on) {
 419                         dsp_rec_stop(dev);
 420                         dsp_rec_start(dev);
 421                 }
 422                 up(&dev->dmasound.lock);
 423                 /* fall through */
 424         case SOUND_PCM_READ_CHANNELS:
 425                 return put_user(dev->dmasound.channels, p);
 426
 427         case SNDCTL_DSP_GETFMTS: /* Returns a mask */
 428                 return put_user(AFMT_U8     | AFMT_S8     |
 429                                 AFMT_U16_LE | AFMT_U16_BE |
 430                                 AFMT_S16_LE | AFMT_S16_BE, p);
 431
 432         case SNDCTL_DSP_SETFMT: /* Selects ONE fmt */
 433                 if (get_user(val, p))
 434                         return -EFAULT;
 435                 switch (val) {
 436                 case AFMT_QUERY:
 437                         /* nothing to do */
 438                         break;
 439                 case AFMT_U8:
 440                 case AFMT_S8:
 441                 case AFMT_U16_LE:
 442                 case AFMT_U16_BE:
 443                 case AFMT_S16_LE:
 444                 case AFMT_S16_BE:
 445                         down(&dev->dmasound.lock);
 446                         dev->dmasound.afmt = val;
 447                         if (dev->dmasound.recording_on) {
 448                                 dsp_rec_stop(dev);
 449                                 dsp_rec_start(dev);
 450                         }
 451                         up(&dev->dmasound.lock);
 452                         return put_user(dev->dmasound.afmt, p);
 453                 default:
 454                         return -EINVAL;
 455                 }
 456
 457         case SOUND_PCM_READ_BITS:
 458                 switch (dev->dmasound.afmt) {
 459                 case AFMT_U8:
 460                 case AFMT_S8:
 461                         return put_user(8, p);
 462                 case AFMT_U16_LE:
 463                 case AFMT_U16_BE:
 464                 case AFMT_S16_LE:
 465                 case AFMT_S16_BE:
 466                         return put_user(16, p);
 467                 default:
 468                         return -EINVAL;
 469                 }
 470
 471         case SNDCTL_DSP_NONBLOCK:
 472                 file->f_flags |= O_NONBLOCK;
 473                 return 0;
 474
 475         case SNDCTL_DSP_RESET:
 476                 down(&dev->dmasound.lock);
 477                 if (dev->dmasound.recording_on)
 478                         dsp_rec_stop(dev);
 479                 up(&dev->dmasound.lock);
 480                 return 0;
 481         case SNDCTL_DSP_GETBLKSIZE:
 482                 return put_user(dev->dmasound.blksize, p);
 483
 484         case SNDCTL_DSP_SETFRAGMENT:
 485                 if (get_user(val, p))
 486                         return -EFAULT;
 487                 if (dev->dmasound.recording_on)
 488                         return -EBUSY;
 489                 dsp_buffer_free(dev);
 490                 /* used to be arg >> 16 instead of val >> 16; fixed */
 491                 dsp_buffer_conf(dev,1 << (val & 0xffff), (val >> 16) & 0xffff);
 492                 dsp_buffer_init(dev);
 493                 return 0;
 494
 495         case SNDCTL_DSP_SYNC:
 496                 /* NOP */
 497                 return 0;
 498
 499         case SNDCTL_DSP_GETISPACE:
 500         {
 501                 audio_buf_info info;
 502                 info.fragsize   = dev->dmasound.blksize;
 503                 info.fragstotal = dev->dmasound.blocks;
 504                 info.bytes      = dev->dmasound.read_count;
 505                 info.fragments  = info.bytes / info.fragsize;
 506                 if (copy_to_user(argp, &info, sizeof(info)))
 507                         return -EFAULT;
 508                 return 0;
 509         }
 510         default:
 511                 return -EINVAL;
 512         }
 513 }
 514
 515 static unsigned int dsp_poll(struct file *file, struct poll_table_struct *wait)
 516 {
 517         struct saa7134_dev *dev = file->private_data;
 518         unsigned int mask = 0;
 519
 520         poll_wait(file, &dev->dmasound.wq, wait);
 521
 522         if (0 == dev->dmasound.read_count) {
 523                 down(&dev->dmasound.lock);
 524                 if (!dev->dmasound.recording_on)
 525                         dsp_rec_start(dev);
 526                 up(&dev->dmasound.lock);
 527         } else
 528                 mask |= (POLLIN | POLLRDNORM);
 529         return mask;
 530 }
 531
 532 struct file_operations saa7134_dsp_fops = {
 533         .owner   = THIS_MODULE,
 534         .open    = dsp_open,
 535         .release = dsp_release,
 536         .read    = dsp_read,
 537         .write   = dsp_write,
 538         .ioctl   = dsp_ioctl,
 539         .poll    = dsp_poll,
 540         .llseek  = no_llseek,
 541 };
 542
 543 /* ------------------------------------------------------------------ */
 544
 545 static int
 546 mixer_recsrc_7134(struct saa7134_dev *dev)
 547 {
 548         int analog_io,rate;
 549
 550         switch (dev->dmasound.input) {
 551         case TV:
 552                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 553                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 554                 break;
 555         case LINE1:
 556         case LINE2:
 557         case LINE2_LEFT:
 558                 analog_io = (LINE1 == dev->dmasound.input) ? 0x00 : 0x08;
 559                 rate = (32000 == dev->dmasound.rate) ? 0x01 : 0x03;
 560                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 561                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 562                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 563                 break;
 564         }
 565         return 0;
 566 }
 567
 568 static int
 569 mixer_recsrc_7133(struct saa7134_dev *dev)
 570 {
 571         u32 anabar, xbarin;
 572
 573         xbarin = 0x03; // adc
 574     anabar = 0;
 575         switch (dev->dmasound.input) {
 576         case TV:
 577                 xbarin = 0; // Demodulator
 578         anabar = 2; // DACs
 579                 break;
 580         case LINE1:
 581                 anabar = 0;  // aux1, aux1
 582                 break;
 583         case LINE2:
 584         case LINE2_LEFT:
 585                 anabar = 9;  // aux2, aux2
 586                 break;
 587         }
 588     /* output xbar always main channel */
 589         saa_dsp_writel(dev, 0x46c >> 2, 0xbbbb10);
 590         saa_dsp_writel(dev, 0x464 >> 2, xbarin);
 591         saa_writel(0x594 >> 2, anabar);
 592
 593         return 0;
 594 }
 595
 596 static int
 597 mixer_recsrc(struct saa7134_dev *dev, enum saa7134_audio_in src)
 598 {
 599         static const char *iname[] = { "Oops", "TV", "LINE1", "LINE2" };
 600
 601         dev->dmasound.count++;
 602         dev->dmasound.input = src;
 603         dprintk("mixer input = %s\n",iname[dev->dmasound.input]);
 604
 605         switch (dev->pci->device) {
 606         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 607                 mixer_recsrc_7134(dev);
 608                 break;
 609         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 610         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 611                 mixer_recsrc_7133(dev);
 612                 break;
 613         }
 614         return 0;
 615 }
 616
 617 static int
 618 mixer_level(struct saa7134_dev *dev, enum saa7134_audio_in src, int level)
 619 {
 620         switch (dev->pci->device) {
 621         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 622                 switch (src) {
 623                 case TV:
 624                         /* nothing */
 625                         break;
 626                 case LINE1:
 627                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x10,
 628                                    (100 == level) ? 0x00 : 0x10);
 629                         break;
 630                 case LINE2:
 631                 case LINE2_LEFT:
 632                         saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x20,
 633                                    (100 == level) ? 0x00 : 0x20);
 634                         break;
 635                 }
 636                 break;
 637         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 638         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 639                 /* nothing */
 640                 break;
 641         }
 642         return 0;
 643 }
 644
 645 /* ------------------------------------------------------------------ */
 646
 647 static int mixer_open(struct inode *inode, struct file *file)
 648 {
 649         int minor = iminor(inode);
 650         struct saa7134_dev *h,*dev = NULL;
 651         struct list_head *list;
 652
 653         list_for_each(list,&saa7134_devlist) {
 654                 h = list_entry(list, struct saa7134_dev, devlist);
 655                 if (h->dmasound.minor_mixer == minor)
 656                         dev = h;
 657         }
 658         if (NULL == dev)
 659                 return -ENODEV;
 660
 661         file->private_data = dev;
 662         return 0;
 663 }
 664
 665 static int mixer_release(struct inode *inode, struct file *file)
 666 {
 667         file->private_data = NULL;
 668         return 0;
 669 }
 670
 671 static int mixer_ioctl(struct inode *inode, struct file *file,
 672                      unsigned int cmd, unsigned long arg)
 673 {
 674         struct saa7134_dev *dev = file->private_data;
 675         enum saa7134_audio_in input;
 676         int val,ret;
 677         void __user *argp = (void __user *) arg;
 678         int __user *p = argp;
 679
 680         if (debug > 1)
 681                 saa7134_print_ioctl(dev->name,cmd);
 682         switch (cmd) {
 683         case OSS_GETVERSION:
 684                 return put_user(SOUND_VERSION, p);
 685         case SOUND_MIXER_INFO:
 686         {
 687                 mixer_info info;
 688                 memset(&info,0,sizeof(info));
 689                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 690                 strlcpy(info.name, dev->name,  sizeof(info.name));
 691                 info.modify_counter = dev->dmasound.count;
 692                 if (copy_to_user(argp, &info, sizeof(info)))
 693                         return -EFAULT;
 694                 return 0;
 695         }
 696         case SOUND_OLD_MIXER_INFO:
 697         {
 698                 _old_mixer_info info;
 699                 memset(&info,0,sizeof(info));
 700                 strlcpy(info.id,   "TV audio", sizeof(info.id));
 701                 strlcpy(info.name, dev->name,  sizeof(info.name));
 702                 if (copy_to_user(argp, &info, sizeof(info)))
 703                         return -EFAULT;
 704                 return 0;
 705         }
 706         case MIXER_READ(SOUND_MIXER_CAPS):
 707                 return put_user(SOUND_CAP_EXCL_INPUT, p);
 708         case MIXER_READ(SOUND_MIXER_STEREODEVS):
 709                 return put_user(0, p);
 710         case MIXER_READ(SOUND_MIXER_RECMASK):
 711         case MIXER_READ(SOUND_MIXER_DEVMASK):
 712                 val = SOUND_MASK_LINE1 | SOUND_MASK_LINE2;
 713                 if (32000 == dev->dmasound.rate)
 714                         val |= SOUND_MASK_VIDEO;
 715                 return put_user(val, p);
 716
 717         case MIXER_WRITE(SOUND_MIXER_RECSRC):
 718                 if (get_user(val, p))
 719                         return -EFAULT;
 720                 input = dev->dmasound.input;
 721                 if (32000 == dev->dmasound.rate  &&
 722                     val & SOUND_MASK_VIDEO  &&  dev->dmasound.input != TV)
 723                         input = TV;
 724                 if (val & SOUND_MASK_LINE1  &&  dev->dmasound.input != LINE1)
 725                         input = LINE1;
 726                 if (val & SOUND_MASK_LINE2  &&  dev->dmasound.input != LINE2)
 727                         input = LINE2;
 728                 if (input != dev->dmasound.input)
 729                         mixer_recsrc(dev,input);
 730                 /* fall throuth */
 731         case MIXER_READ(SOUND_MIXER_RECSRC):
 732                 switch (dev->dmasound.input) {
 733                 case TV:    ret = SOUND_MASK_VIDEO; break;
 734                 case LINE1: ret = SOUND_MASK_LINE1; break;
 735                 case LINE2: ret = SOUND_MASK_LINE2; break;
 736                 default:    ret = 0;
 737                 }
 738                 return put_user(ret, p);
 739
 740         case MIXER_WRITE(SOUND_MIXER_VIDEO):
 741         case MIXER_READ(SOUND_MIXER_VIDEO):
 742                 if (32000 != dev->dmasound.rate)
 743                         return -EINVAL;
 744                 return put_user(100 | 100 << 8, p);
 745
 746         case MIXER_WRITE(SOUND_MIXER_LINE1):
 747                 if (get_user(val, p))
 748                         return -EFAULT;
 749                 val &= 0xff;
 750                 val = (val <= 50) ? 50 : 100;
 751                 dev->dmasound.line1 = val;
 752                 mixer_level(dev,LINE1,dev->dmasound.line1);
 753                 /* fall throuth */
 754         case MIXER_READ(SOUND_MIXER_LINE1):
 755                 return put_user(dev->dmasound.line1 | dev->dmasound.line1 << 8, p);
 756
 757         case MIXER_WRITE(SOUND_MIXER_LINE2):
 758                 if (get_user(val, p))
 759                         return -EFAULT;
 760                 val &= 0xff;
 761                 val = (val <= 50) ? 50 : 100;
 762                 dev->dmasound.line2 = val;
 763                 mixer_level(dev,LINE2,dev->dmasound.line2);
 764                 /* fall throuth */
 765         case MIXER_READ(SOUND_MIXER_LINE2):
 766                 return put_user(dev->dmasound.line2 | dev->dmasound.line2 << 8, p);
 767
 768         default:
 769                 return -EINVAL;
 770         }
 771 }
 772
 773 struct file_operations saa7134_mixer_fops = {
 774         .owner   = THIS_MODULE,
 775         .open    = mixer_open,
 776         .release = mixer_release,
 777         .ioctl   = mixer_ioctl,
 778         .llseek  = no_llseek,
 779 };
 780
 781 /* ------------------------------------------------------------------ */
 782
 783 static irqreturn_t saa7134_oss_irq(int irq, void *dev_id, struct pt_regs *regs)
 784 {
 785         struct saa7134_dmasound *dmasound = dev_id;
 786         struct saa7134_dev *dev = dmasound->priv_data;
 787         unsigned long report, status;
 788         int loop, handled = 0;
 789
 790         for (loop = 0; loop < 10; loop++) {
 791                 report = saa_readl(SAA7134_IRQ_REPORT);
 792                 status = saa_readl(SAA7134_IRQ_STATUS);
 793
 794                 if (report & SAA7134_IRQ_REPORT_DONE_RA3) {
 795                         handled = 1;
 796                         saa_writel(SAA7134_IRQ_REPORT,report);
 797                         saa7134_irq_oss_done(dev, status);
 798                 } else {
 799                         goto out;
 800                 }
 801         }
 802
 803         if (loop == 10) {
 804                 dprintk("error! looping IRQ!");
 805         }
 806 out:
 807         return IRQ_RETVAL(handled);
 808 }
 809
 810 int saa7134_oss_init1(struct saa7134_dev *dev)
 811 {
 812
 813         if ((request_irq(dev->pci->irq, saa7134_oss_irq,
 814                          SA_SHIRQ | SA_INTERRUPT, dev->name,
 815                         (void*) &dev->dmasound)) < 0)
 816                 return -1;
 817
 818         /* general */
 819         init_MUTEX(&dev->dmasound.lock);
 820         init_waitqueue_head(&dev->dmasound.wq);
 821
 822         switch (dev->pci->device) {
 823         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 824         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 825                 saa_writel(0x588 >> 2, 0x00000fff);
 826                 saa_writel(0x58c >> 2, 0x00543210);
 827                 saa_dsp_writel(dev, 0x46c >> 2, 0xbbbbbb);
 828                 break;
 829         }
 830
 831         /* dsp */
 832         dev->dmasound.rate = 32000;
 833         if (rate)
 834                 dev->dmasound.rate = rate;
 835         dev->dmasound.rate = (dev->dmasound.rate > 40000) ? 48000 : 32000;
 836
 837         /* mixer */
 838         dev->dmasound.line1 = 50;
 839         dev->dmasound.line2 = 50;
 840         mixer_level(dev,LINE1,dev->dmasound.line1);
 841         mixer_level(dev,LINE2,dev->dmasound.line2);
 842         mixer_recsrc(dev, (dev->dmasound.rate == 32000) ? TV : LINE2);
 843
 844         return 0;
 845 }
 846
 847 int saa7134_oss_fini(struct saa7134_dev *dev)
 848 {
 849         /* nothing */
 850         return 0;
 851 }
 852
 853 void saa7134_irq_oss_done(struct saa7134_dev *dev, unsigned long status)
 854 {
 855         int next_blk, reg = 0;
 856
 857         spin_lock(&dev->slock);
 858         if (UNSET == dev->dmasound.dma_blk) {
 859                 dprintk("irq: recording stopped\n");
 860                 goto done;
 861         }
 862         if (0 != (status & 0x0f000000))
 863                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 864         if (0 == (status & 0x10000000)) {
 865                 /* odd */
 866                 if (0 == (dev->dmasound.dma_blk & 0x01))
 867                         reg = SAA7134_RS_BA1(6);
 868         } else {
 869                 /* even */
 870                 if (1 == (dev->dmasound.dma_blk & 0x01))
 871                         reg = SAA7134_RS_BA2(6);
 872         }
 873         if (0 == reg) {
 874                 dprintk("irq: field oops [%s]\n",
 875                         (status & 0x10000000) ? "even" : "odd");
 876                 goto done;
 877         }
 878         if (dev->dmasound.read_count >= dev->dmasound.blksize * (dev->dmasound.blocks-2)) {
 879                 dprintk("irq: overrun [full=%d/%d]\n",dev->dmasound.read_count,
 880                         dev->dmasound.bufsize);
 881                 dsp_dma_stop(dev);
 882                 goto done;
 883         }
 884
 885         /* next block addr */
 886         next_blk = (dev->dmasound.dma_blk + 2) % dev->dmasound.blocks;
 887         saa_writel(reg,next_blk * dev->dmasound.blksize);
 888         if (debug > 2)
 889                 dprintk("irq: ok, %s, next_blk=%d, addr=%x\n",
 890                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 891                         next_blk * dev->dmasound.blksize);
 892
 893         /* update status & wake waiting readers */
 894         dev->dmasound.dma_blk = (dev->dmasound.dma_blk + 1) % dev->dmasound.blocks;
 895         dev->dmasound.read_count += dev->dmasound.blksize;
 896         wake_up(&dev->dmasound.wq);
 897
 898  done:
 899         spin_unlock(&dev->slock);
 900 }
 901
 902 static int saa7134_dsp_create(struct saa7134_dev *dev)
 903 {
 904         int err;
 905
 906         err = dev->dmasound.minor_dsp =
 907                 register_sound_dsp(&saa7134_dsp_fops,
 908                                    dsp_nr[dev->nr]);
 909         if (err < 0) {
 910                 goto fail;
 911         }
 912         printk(KERN_INFO "%s: registered device dsp%d\n",
 913                dev->name,dev->dmasound.minor_dsp >> 4);
 914
 915         err = dev->dmasound.minor_mixer =
 916                 register_sound_mixer(&saa7134_mixer_fops,
 917                                      mixer_nr[dev->nr]);
 918         if (err < 0)
 919                 goto fail;
 920         printk(KERN_INFO "%s: registered device mixer%d\n",
 921                dev->name,dev->dmasound.minor_mixer >> 4);
 922
 923         return 0;
 924
 925 fail:
 926         unregister_sound_dsp(dev->dmasound.minor_dsp);
 927         return 0;
 928
 929
 930 }
 931
 932 static int oss_device_init(struct saa7134_dev *dev)
 933 {
 934         dev->dmasound.priv_data = dev;
 935         saa7134_oss_init1(dev);
 936         saa7134_dsp_create(dev);
 937         return 1;
 938 }
 939
 940 static int oss_device_exit(struct saa7134_dev *dev)
 941 {
 942
 943         unregister_sound_mixer(dev->dmasound.minor_mixer);
 944         unregister_sound_dsp(dev->dmasound.minor_dsp);
 945
 946         saa7134_oss_fini(dev);
 947
 948         if (dev->pci->irq > 0) {
 949                 synchronize_irq(dev->pci->irq);
 950                 free_irq(dev->pci->irq,&dev->dmasound);
 951         }
 952
 953         dev->dmasound.priv_data = NULL;
 954         return 1;
 955 }
 956
 957 static int saa7134_oss_init(void)
 958 {
 959         struct saa7134_dev *dev = NULL;
 960         struct list_head *list;
 961
 962         printk(KERN_INFO "saa7134 OSS driver for DMA sound loaded\n");
 963
 964         list_for_each(list,&saa7134_devlist) {
 965                 dev = list_entry(list, struct saa7134_dev, devlist);
 966                 if (dev->dmasound.priv_data == NULL) {
 967                         oss_device_init(dev);
 968                 } else {
 969                         printk(KERN_ERR "saa7134 OSS: DMA sound is being handled by ALSA, ignoring %s\n",dev->name);
 970                         return -EBUSY;
 971                 }
 972         }
 973
 974         if (dev == NULL)
 975                 printk(KERN_INFO "saa7134 OSS: no saa7134 cards found\n");
 976
 977         dmasound_init = oss_device_init;
 978         dmasound_exit = oss_device_exit;
 979
 980         return 0;
 981
 982 }
 983
 984 static void saa7134_oss_exit(void)
 985 {
 986         struct saa7134_dev *dev = NULL;
 987         struct list_head *list;
 988
 989         list_for_each(list,&saa7134_devlist) {
 990                 dev = list_entry(list, struct saa7134_dev, devlist);
 991
 992                 /* Device isn't registered by OSS, probably ALSA's */
 993                 if (!dev->dmasound.minor_dsp)
 994                         continue;
 995
 996                 oss_device_exit(dev);
 997
 998         }
 999
1000         printk(KERN_INFO "saa7134 OSS driver for DMA sound unloaded\n");
1001
1002         return;
1003 }
1004
1005 module_init(saa7134_oss_init);
1006 module_exit(saa7134_oss_exit);
1007 MODULE_LICENSE("GPL");
1008 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
1009
1010 /* ----------------------------------------------------------- */
1011 /*
1012  * Local variables:
1013  * c-basic-offset: 8
1014  * End:
1015  */