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

   1 /*
   2  *   SAA713x ALSA support for V4L
   3  *   Ricardo Cerqueira <v4l@cerqueira.org>
   4  *
   5  *
   6  *   Caveats:
   7  *        - Volume doesn't work (it's always at max)
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation, version 2
  12  *
  13  *   This program is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with this program; if not, write to the Free Software
  20  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  *
  22  */
  23
  24 #include <sound/driver.h>
  25 #include <linux/init.h>
  26 #include <linux/slab.h>
  27 #include <linux/time.h>
  28 #include <linux/wait.h>
  29 #include <linux/moduleparam.h>
  30 #include <linux/module.h>
  31 #include <sound/core.h>
  32 #include <sound/control.h>
  33 #include <sound/pcm.h>
  34 #include <sound/rawmidi.h>
  35 #include <sound/initval.h>
  36
  37 #include "saa7134.h"
  38 #include "saa7134-reg.h"
  39
  40 static unsigned int alsa_debug  = 0;
  41 module_param(alsa_debug, int, 0644);
  42 MODULE_PARM_DESC(alsa_debug,"enable debug messages [alsa]");
  43
  44 /*
  45  * Configuration macros
  46  */
  47
  48 /* defaults */
  49 #define MAX_BUFFER_SIZE         (256*1024)
  50 #define USE_FORMATS             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE
  51 #define USE_RATE                SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000
  52 #define USE_RATE_MIN            32000
  53 #define USE_RATE_MAX            48000
  54 #define USE_CHANNELS_MIN        1
  55 #define USE_CHANNELS_MAX        2
  56 #ifndef USE_PERIODS_MIN
  57 #define USE_PERIODS_MIN         2
  58 #endif
  59 #ifndef USE_PERIODS_MAX
  60 #define USE_PERIODS_MAX         1024
  61 #endif
  62
  63 #define MIXER_ADDR_TVTUNER      0
  64 #define MIXER_ADDR_LINE1        1
  65 #define MIXER_ADDR_LINE2        2
  66 #define MIXER_ADDR_LAST         2
  67
  68 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  69 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  70 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
  71
  72 #define dprintk(fmt, arg...)    if (alsa_debug) \
  73         printk(KERN_DEBUG "%s/alsa: " fmt, dev->name , ## arg)
  74
  75 /*
  76  * Main chip structure
  77  */
  78 typedef struct snd_card_saa7134 {
  79         snd_card_t *card;
  80         spinlock_t mixer_lock;
  81         int mixer_volume[MIXER_ADDR_LAST+1][2];
  82         int capture_source[MIXER_ADDR_LAST+1][2];
  83         struct pci_dev *pci;
  84         struct saa7134_dev *saadev;
  85
  86         unsigned long iobase;
  87         int irq;
  88
  89         spinlock_t lock;
  90 } snd_card_saa7134_t;
  91
  92 /*
  93  * PCM structure
  94  */
  95
  96 typedef struct snd_card_saa7134_pcm {
  97         struct saa7134_dev *saadev;
  98
  99         spinlock_t lock;
 100         unsigned int pcm_size;          /* buffer size */
 101         unsigned int pcm_count;         /* bytes per period */
 102         unsigned int pcm_bps;           /* bytes per second */
 103         snd_pcm_substream_t *substream;
 104 } snd_card_saa7134_pcm_t;
 105
 106 static snd_card_t *snd_saa7134_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
 107
 108 /*
 109  * saa7134 DMA audio stop
 110  *
 111  *   Called when the capture device is released or the buffer overflows
 112  *
 113  *   - Copied verbatim from saa7134-oss's dsp_dma_stop. Can be dropped
 114  *     if we just share dsp_dma_stop and use it here
 115  *
 116  */
 117
 118 static void saa7134_dma_stop(struct saa7134_dev *dev)
 119
 120 {
 121         dev->oss.dma_blk     = -1;
 122         dev->oss.dma_running = 0;
 123         saa7134_set_dmabits(dev);
 124 }
 125
 126 /*
 127  * saa7134 DMA audio start
 128  *
 129  *   Called when preparing the capture device for use
 130  *
 131  *   - Copied verbatim from saa7134-oss's dsp_dma_start. Can be dropped
 132  *     if we just share dsp_dma_start and use it here
 133  *
 134  */
 135
 136 static void saa7134_dma_start(struct saa7134_dev *dev)
 137 {
 138         dev->oss.dma_blk     = 0;
 139         dev->oss.dma_running = 1;
 140         saa7134_set_dmabits(dev);
 141 }
 142
 143 /*
 144  * saa7134 audio DMA IRQ handler
 145  *
 146  *   Called whenever we get an SAA7134_IRQ_REPORT_DONE_RA3 interrupt
 147  *   Handles shifting between the 2 buffers, manages the read counters,
 148  *  and notifies ALSA when periods elapse
 149  *
 150  *   - Mostly copied from saa7134-oss's saa7134_irq_oss_done.
 151  *
 152  */
 153
 154 void saa7134_irq_alsa_done(struct saa7134_dev *dev, unsigned long status)
 155 {
 156         int next_blk, reg = 0;
 157
 158         spin_lock(&dev->slock);
 159         if (UNSET == dev->oss.dma_blk) {
 160                 dprintk("irq: recording stopped\n");
 161                 goto done;
 162         }
 163         if (0 != (status & 0x0f000000))
 164                 dprintk("irq: lost %ld\n", (status >> 24) & 0x0f);
 165         if (0 == (status & 0x10000000)) {
 166                 /* odd */
 167                 if (0 == (dev->oss.dma_blk & 0x01))
 168                         reg = SAA7134_RS_BA1(6);
 169         } else {
 170                 /* even */
 171                 if (1 == (dev->oss.dma_blk & 0x01))
 172                         reg = SAA7134_RS_BA2(6);
 173         }
 174         if (0 == reg) {
 175                 dprintk("irq: field oops [%s]\n",
 176                         (status & 0x10000000) ? "even" : "odd");
 177                 goto done;
 178         }
 179
 180         if (dev->oss.read_count >= dev->oss.blksize * (dev->oss.blocks-2)) {
 181                 dprintk("irq: overrun [full=%d/%d] - Blocks in %d\n",dev->oss.read_count,
 182                         dev->oss.bufsize, dev->oss.blocks);
 183                 saa7134_dma_stop(dev);
 184                 goto done;
 185         }
 186
 187         /* next block addr */
 188         next_blk = (dev->oss.dma_blk + 2) % dev->oss.blocks;
 189         saa_writel(reg,next_blk * dev->oss.blksize);
 190         if (alsa_debug > 2)
 191                 dprintk("irq: ok, %s, next_blk=%d, addr=%x, blocks=%u, size=%u, read=%u\n",
 192                         (status & 0x10000000) ? "even" : "odd ", next_blk,
 193                         next_blk * dev->oss.blksize, dev->oss.blocks, dev->oss.blksize, dev->oss.read_count);
 194
 195
 196         /* update status & wake waiting readers */
 197         dev->oss.dma_blk = (dev->oss.dma_blk + 1) % dev->oss.blocks;
 198         dev->oss.read_count += dev->oss.blksize;
 199
 200         dev->oss.recording_on = reg;
 201
 202         if (dev->oss.read_count >= snd_pcm_lib_period_bytes(dev->oss.substream)) {
 203                 spin_unlock(&dev->slock);
 204                 snd_pcm_period_elapsed(dev->oss.substream);
 205                 spin_lock(&dev->slock);
 206         }
 207  done:
 208         spin_unlock(&dev->slock);
 209
 210 }
 211
 212 /*
 213  * ALSA capture trigger
 214  *
 215  *   - One of the ALSA capture callbacks.
 216  *
 217  *   Called whenever a capture is started or stopped. Must be defined,
 218  *   but there's nothing we want to do here
 219  *
 220  */
 221
 222 static int snd_card_saa7134_capture_trigger(snd_pcm_substream_t * substream,
 223                                           int cmd)
 224 {
 225         return 0;
 226 }
 227
 228 /*
 229  * DMA buffer config
 230  *
 231  *   Sets the values that will later be used as the size of the buffer,
 232  *  size of the fragments, and total number of fragments.
 233  *   Must be called during the preparation stage, before memory is
 234  *  allocated
 235  *
 236  *   - Copied verbatim from saa7134-oss. Can be dropped
 237  *     if we just share dsp_buffer_conf from OSS.
 238  */
 239
 240 static int dsp_buffer_conf(struct saa7134_dev *dev, int blksize, int blocks)
 241 {
 242         if (blksize < 0x100)
 243                 blksize = 0x100;
 244         if (blksize > 0x10000)
 245                 blksize = 0x10000;
 246
 247         if (blocks < 2)
 248                 blocks = 2;
 249         if ((blksize * blocks) > 1024*1024)
 250                 blocks = 1024*1024 / blksize;
 251
 252         dev->oss.blocks  = blocks;
 253         dev->oss.blksize = blksize;
 254         dev->oss.bufsize = blksize * blocks;
 255
 256         dprintk("buffer config: %d blocks / %d bytes, %d kB total\n",
 257                 blocks,blksize,blksize * blocks / 1024);
 258         return 0;
 259 }
 260
 261 /*
 262  * DMA buffer initialization
 263  *
 264  *   Uses V4L functions to initialize the DMA. Shouldn't be necessary in
 265  *  ALSA, but I was unable to use ALSA's own DMA, and had to force the
 266  *  usage of V4L's
 267  *
 268  *   - Copied verbatim from saa7134-oss. Can be dropped
 269  *     if we just share dsp_buffer_init from OSS.
 270  */
 271
 272 static int dsp_buffer_init(struct saa7134_dev *dev)
 273 {
 274         int err;
 275
 276         if (!dev->oss.bufsize)
 277                 BUG();
 278         videobuf_dma_init(&dev->oss.dma);
 279         err = videobuf_dma_init_kernel(&dev->oss.dma, PCI_DMA_FROMDEVICE,
 280                                        (dev->oss.bufsize + PAGE_SIZE) >> PAGE_SHIFT);
 281         if (0 != err)
 282                 return err;
 283         return 0;
 284 }
 285
 286 /*
 287  * ALSA PCM preparation
 288  *
 289  *   - One of the ALSA capture callbacks.
 290  *
 291  *   Called right after the capture device is opened, this function configures
 292  *  the buffer using the previously defined functions, allocates the memory,
 293  *  sets up the hardware registers, and then starts the DMA. When this function
 294  *  returns, the audio should be flowing.
 295  *
 296  */
 297
 298 static int snd_card_saa7134_capture_prepare(snd_pcm_substream_t * substream)
 299 {
 300         snd_pcm_runtime_t *runtime = substream->runtime;
 301         int err, bswap, sign;
 302         u32 fmt, control;
 303         unsigned long flags;
 304         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
 305         struct saa7134_dev *dev;
 306         snd_card_saa7134_pcm_t *saapcm = runtime->private_data;
 307         unsigned int bps;
 308         unsigned long size;
 309         unsigned count;
 310
 311         size = snd_pcm_lib_buffer_bytes(substream);
 312         count = snd_pcm_lib_period_bytes(substream);
 313
 314         saapcm->saadev->oss.substream = substream;
 315         bps = runtime->rate * runtime->channels;
 316         bps *= snd_pcm_format_width(runtime->format);
 317         bps /= 8;
 318         if (bps <= 0)
 319                 return -EINVAL;
 320         saapcm->pcm_bps = bps;
 321         saapcm->pcm_size = snd_pcm_lib_buffer_bytes(substream);
 322         saapcm->pcm_count = snd_pcm_lib_period_bytes(substream);
 323
 324
 325         dev=saa7134->saadev;
 326
 327         dsp_buffer_conf(dev,saapcm->pcm_count,(saapcm->pcm_size/saapcm->pcm_count));
 328
 329         err = dsp_buffer_init(dev);
 330         if (0 != err)
 331                 goto fail2;
 332
 333         /* prepare buffer */
 334         if (0 != (err = videobuf_dma_pci_map(dev->pci,&dev->oss.dma)))
 335                 return err;
 336         if (0 != (err = saa7134_pgtable_alloc(dev->pci,&dev->oss.pt)))
 337                 goto fail1;
 338         if (0 != (err = saa7134_pgtable_build(dev->pci,&dev->oss.pt,
 339                                               dev->oss.dma.sglist,
 340                                               dev->oss.dma.sglen,
 341                                               0)))
 342                 goto fail2;
 343
 344
 345
 346         switch (runtime->format) {
 347           case SNDRV_PCM_FORMAT_U8:
 348           case SNDRV_PCM_FORMAT_S8:
 349                 fmt = 0x00;
 350                 break;
 351           case SNDRV_PCM_FORMAT_U16_LE:
 352           case SNDRV_PCM_FORMAT_U16_BE:
 353           case SNDRV_PCM_FORMAT_S16_LE:
 354           case SNDRV_PCM_FORMAT_S16_BE:
 355                 fmt = 0x01;
 356                 break;
 357           default:
 358                 err = -EINVAL;
 359                 return 1;
 360         }
 361
 362         switch (runtime->format) {
 363           case SNDRV_PCM_FORMAT_S8:
 364           case SNDRV_PCM_FORMAT_S16_LE:
 365           case SNDRV_PCM_FORMAT_S16_BE:
 366                 sign = 1;
 367                 break;
 368           default:
 369                 sign = 0;
 370                 break;
 371         }
 372
 373         switch (runtime->format) {
 374           case SNDRV_PCM_FORMAT_U16_BE:
 375           case SNDRV_PCM_FORMAT_S16_BE:
 376                 bswap = 1; break;
 377           default:
 378                 bswap = 0; break;
 379         }
 380
 381         switch (dev->pci->device) {
 382           case PCI_DEVICE_ID_PHILIPS_SAA7134:
 383                 if (1 == runtime->channels)
 384                         fmt |= (1 << 3);
 385                 if (2 == runtime->channels)
 386                         fmt |= (3 << 3);
 387                 if (sign)
 388                         fmt |= 0x04;
 389
 390                 fmt |= (MIXER_ADDR_TVTUNER == dev->oss.input) ? 0xc0 : 0x80;
 391                 saa_writeb(SAA7134_NUM_SAMPLES0, ((dev->oss.blksize - 1) & 0x0000ff));
 392                 saa_writeb(SAA7134_NUM_SAMPLES1, ((dev->oss.blksize - 1) & 0x00ff00) >>  8);
 393                 saa_writeb(SAA7134_NUM_SAMPLES2, ((dev->oss.blksize - 1) & 0xff0000) >> 16);
 394                 saa_writeb(SAA7134_AUDIO_FORMAT_CTRL, fmt);
 395
 396                 break;
 397           case PCI_DEVICE_ID_PHILIPS_SAA7133:
 398           case PCI_DEVICE_ID_PHILIPS_SAA7135:
 399                 if (1 == runtime->channels)
 400                         fmt |= (1 << 4);
 401                 if (2 == runtime->channels)
 402                         fmt |= (2 << 4);
 403                 if (!sign)
 404                         fmt |= 0x04;
 405                 saa_writel(SAA7133_NUM_SAMPLES, dev->oss.blksize -1);
 406                 saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210 | (fmt << 24));
 407                 //saa_writel(SAA7133_AUDIO_CHANNEL, 0x543210);
 408                 break;
 409         }
 410
 411         dprintk("rec_start: afmt=%d ch=%d  =>  fmt=0x%x swap=%c\n",
 412                 runtime->format, runtime->channels, fmt,
 413                 bswap ? 'b' : '-');
 414         /* dma: setup channel 6 (= AUDIO) */
 415         control = SAA7134_RS_CONTROL_BURST_16 |
 416                 SAA7134_RS_CONTROL_ME |
 417                 (dev->oss.pt.dma >> 12);
 418         if (bswap)
 419                 control |= SAA7134_RS_CONTROL_BSWAP;
 420
 421         /* I should be able to use runtime->dma_addr in the control
 422            byte, but it doesn't work. So I allocate the DMA using the
 423            V4L functions, and force ALSA to use that as the DMA area */
 424
 425         runtime->dma_area = dev->oss.dma.vmalloc;
 426
 427         saa_writel(SAA7134_RS_BA1(6),0);
 428         saa_writel(SAA7134_RS_BA2(6),dev->oss.blksize);
 429         saa_writel(SAA7134_RS_PITCH(6),0);
 430         saa_writel(SAA7134_RS_CONTROL(6),control);
 431
 432         dev->oss.rate = runtime->rate;
 433         /* start dma */
 434         spin_lock_irqsave(&dev->slock,flags);
 435         saa7134_dma_start(dev);
 436         spin_unlock_irqrestore(&dev->slock,flags);
 437
 438         return 0;
 439  fail2:
 440         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 441  fail1:
 442         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 443         return err;
 444
 445
 446 }
 447
 448 /*
 449  * ALSA pointer fetching
 450  *
 451  *   - One of the ALSA capture callbacks.
 452  *
 453  *   Called whenever a period elapses, it must return the current hardware
 454  *  position of the buffer.
 455  *   Also resets the read counter used to prevent overruns
 456  *
 457  */
 458
 459 static snd_pcm_uframes_t snd_card_saa7134_capture_pointer(snd_pcm_substream_t * substream)
 460 {
 461         snd_pcm_runtime_t *runtime = substream->runtime;
 462         snd_card_saa7134_pcm_t *saapcm = runtime->private_data;
 463         struct saa7134_dev *dev=saapcm->saadev;
 464
 465
 466
 467         if (dev->oss.read_count) {
 468                 dev->oss.read_count  -= snd_pcm_lib_period_bytes(substream);
 469                 dev->oss.read_offset += snd_pcm_lib_period_bytes(substream);
 470                 if (dev->oss.read_offset == dev->oss.bufsize)
 471                         dev->oss.read_offset = 0;
 472         }
 473
 474         return bytes_to_frames(runtime, dev->oss.read_offset);
 475 }
 476
 477 /*
 478  * ALSA hardware capabilities definition
 479  */
 480
 481 static snd_pcm_hardware_t snd_card_saa7134_capture =
 482 {
 483         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 484                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 485                                  SNDRV_PCM_INFO_MMAP_VALID),
 486         .formats =              USE_FORMATS,
 487         .rates =                USE_RATE,
 488         .rate_min =             USE_RATE_MIN,
 489         .rate_max =             USE_RATE_MAX,
 490         .channels_min =         USE_CHANNELS_MIN,
 491         .channels_max =         USE_CHANNELS_MAX,
 492         .buffer_bytes_max =     MAX_BUFFER_SIZE,
 493         .period_bytes_min =     64,
 494         .period_bytes_max =     MAX_BUFFER_SIZE,
 495         .periods_min =          USE_PERIODS_MIN,
 496         .periods_max =          USE_PERIODS_MAX,
 497         .fifo_size =            0x08070503,
 498 };
 499
 500 static void snd_card_saa7134_runtime_free(snd_pcm_runtime_t *runtime)
 501 {
 502         snd_card_saa7134_pcm_t *saapcm = runtime->private_data;
 503
 504         kfree(saapcm);
 505 }
 506
 507
 508 /*
 509  * ALSA hardware params
 510  *
 511  *   - One of the ALSA capture callbacks.
 512  *
 513  *   Called on initialization, right before the PCM preparation
 514  *   Usually used in ALSA to allocate the DMA, but since we don't use the
 515  *  ALSA DMA I'm almost sure this isn't necessary.
 516  *
 517  */
 518
 519 static int snd_card_saa7134_hw_params(snd_pcm_substream_t * substream,
 520                                     snd_pcm_hw_params_t * hw_params)
 521 {
 522
 523         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 524
 525
 526 }
 527
 528 /*
 529  * ALSA hardware release
 530  *
 531  *   - One of the ALSA capture callbacks.
 532  *
 533  *   Called after closing the device, but before snd_card_saa7134_capture_close
 534  *   Usually used in ALSA to free the DMA, but since we don't use the
 535  *  ALSA DMA I'm almost sure this isn't necessary.
 536  *
 537  */
 538
 539 static int snd_card_saa7134_hw_free(snd_pcm_substream_t * substream)
 540 {
 541         return snd_pcm_lib_free_pages(substream);
 542 }
 543
 544 /*
 545  * DMA buffer release
 546  *
 547  *   Called after closing the device, during snd_card_saa7134_capture_close
 548  *
 549  */
 550
 551 static int dsp_buffer_free(struct saa7134_dev *dev)
 552 {
 553         if (!dev->oss.blksize)
 554                 BUG();
 555
 556         videobuf_dma_free(&dev->oss.dma);
 557
 558         dev->oss.blocks  = 0;
 559         dev->oss.blksize = 0;
 560         dev->oss.bufsize = 0;
 561
 562         return 0;
 563 }
 564
 565 /*
 566  * ALSA capture finish
 567  *
 568  *   - One of the ALSA capture callbacks.
 569  *
 570  *   Called after closing the device. It stops the DMA audio and releases
 571  *  the buffers
 572  *
 573  */
 574
 575 static int snd_card_saa7134_capture_close(snd_pcm_substream_t * substream)
 576 {
 577         snd_card_saa7134_t *chip = snd_pcm_substream_chip(substream);
 578         struct saa7134_dev *dev = chip->saadev;
 579         unsigned long flags;
 580
 581         /* stop dma */
 582         spin_lock_irqsave(&dev->slock,flags);
 583         saa7134_dma_stop(dev);
 584         spin_unlock_irqrestore(&dev->slock,flags);
 585
 586         /* unlock buffer */
 587         saa7134_pgtable_free(dev->pci,&dev->oss.pt);
 588         videobuf_dma_pci_unmap(dev->pci,&dev->oss.dma);
 589
 590         dsp_buffer_free(dev);
 591         return 0;
 592 }
 593
 594 /*
 595  * ALSA capture start
 596  *
 597  *   - One of the ALSA capture callbacks.
 598  *
 599  *   Called when opening the device. It creates and populates the PCM
 600  *  structure
 601  *
 602  */
 603
 604 static int snd_card_saa7134_capture_open(snd_pcm_substream_t * substream)
 605 {
 606         snd_pcm_runtime_t *runtime = substream->runtime;
 607         snd_card_saa7134_pcm_t *saapcm;
 608         snd_card_saa7134_t *saa7134 = snd_pcm_substream_chip(substream);
 609         struct saa7134_dev *dev = saa7134->saadev;
 610         int err;
 611
 612         down(&dev->oss.lock);
 613
 614         dev->oss.afmt        = SNDRV_PCM_FORMAT_U8;
 615         dev->oss.channels    = 2;
 616         dev->oss.read_count  = 0;
 617         dev->oss.read_offset = 0;
 618
 619         up(&dev->oss.lock);
 620
 621         saapcm = kcalloc(1, sizeof(*saapcm), GFP_KERNEL);
 622         if (saapcm == NULL)
 623                 return -ENOMEM;
 624         saapcm->saadev=saa7134->saadev;
 625
 626         spin_lock_init(&saapcm->lock);
 627
 628         saapcm->substream = substream;
 629         runtime->private_data = saapcm;
 630         runtime->private_free = snd_card_saa7134_runtime_free;
 631         runtime->hw = snd_card_saa7134_capture;
 632
 633         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 634                 return err;
 635
 636         return 0;
 637 }
 638
 639 /*
 640  * ALSA capture callbacks definition
 641  */
 642
 643 static snd_pcm_ops_t snd_card_saa7134_capture_ops = {
 644         .open =                 snd_card_saa7134_capture_open,
 645         .close =                snd_card_saa7134_capture_close,
 646         .ioctl =                snd_pcm_lib_ioctl,
 647         .hw_params =            snd_card_saa7134_hw_params,
 648         .hw_free =              snd_card_saa7134_hw_free,
 649         .prepare =              snd_card_saa7134_capture_prepare,
 650         .trigger =              snd_card_saa7134_capture_trigger,
 651         .pointer =              snd_card_saa7134_capture_pointer,
 652 };
 653
 654 /*
 655  * ALSA PCM setup
 656  *
 657  *   Called when initializing the board. Sets up the name and hooks up
 658  *  the callbacks
 659  *
 660  */
 661
 662 static int snd_card_saa7134_pcm(snd_card_saa7134_t *saa7134, int device)
 663 {
 664         snd_pcm_t *pcm;
 665         int err;
 666
 667         if ((err = snd_pcm_new(saa7134->card, "SAA7134 PCM", device, 0, 1, &pcm)) < 0)
 668                 return err;
 669         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_saa7134_capture_ops);
 670         pcm->private_data = saa7134;
 671         pcm->info_flags = 0;
 672         strcpy(pcm->name, "SAA7134 PCM");
 673         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 674                                               snd_dma_pci_data(saa7134->pci),
 675                                               128*1024, 256*1024);
 676         return 0;
 677 }
 678
 679 #define SAA713x_VOLUME(xname, xindex, addr) \
 680 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 681   .info = snd_saa7134_volume_info, \
 682   .get = snd_saa7134_volume_get, .put = snd_saa7134_volume_put, \
 683   .private_value = addr }
 684
 685 static int snd_saa7134_volume_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
 686 {
 687         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 688         uinfo->count = 2;
 689         uinfo->value.integer.min = 0;
 690         uinfo->value.integer.max = 20;
 691         return 0;
 692 }
 693
 694 static int snd_saa7134_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 695 {
 696         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
 697         unsigned long flags;
 698         int addr = kcontrol->private_value;
 699
 700         spin_lock_irqsave(&chip->mixer_lock, flags);
 701         ucontrol->value.integer.value[0] = chip->mixer_volume[addr][0];
 702         ucontrol->value.integer.value[1] = chip->mixer_volume[addr][1];
 703         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 704         return 0;
 705 }
 706
 707 static int snd_saa7134_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 708 {
 709         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
 710         unsigned long flags;
 711         int change, addr = kcontrol->private_value;
 712         int left, right;
 713
 714         left = ucontrol->value.integer.value[0];
 715         if (left < 0)
 716                 left = 0;
 717         if (left > 20)
 718                 left = 20;
 719         right = ucontrol->value.integer.value[1];
 720         if (right < 0)
 721                 right = 0;
 722         if (right > 20)
 723                 right = 20;
 724         spin_lock_irqsave(&chip->mixer_lock, flags);
 725         change = chip->mixer_volume[addr][0] != left ||
 726                  chip->mixer_volume[addr][1] != right;
 727         chip->mixer_volume[addr][0] = left;
 728         chip->mixer_volume[addr][1] = right;
 729         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 730         return change;
 731 }
 732
 733 #define SAA713x_CAPSRC(xname, xindex, addr) \
 734 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
 735   .info = snd_saa7134_capsrc_info, \
 736   .get = snd_saa7134_capsrc_get, .put = snd_saa7134_capsrc_put, \
 737   .private_value = addr }
 738
 739 static int snd_saa7134_capsrc_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
 740 {
 741         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
 742         uinfo->count = 2;
 743         uinfo->value.integer.min = 0;
 744         uinfo->value.integer.max = 1;
 745         return 0;
 746 }
 747
 748 static int snd_saa7134_capsrc_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 749 {
 750         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
 751         unsigned long flags;
 752         int addr = kcontrol->private_value;
 753
 754         spin_lock_irqsave(&chip->mixer_lock, flags);
 755         ucontrol->value.integer.value[0] = chip->capture_source[addr][0];
 756         ucontrol->value.integer.value[1] = chip->capture_source[addr][1];
 757         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 758         return 0;
 759 }
 760
 761 static int snd_saa7134_capsrc_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 762 {
 763         snd_card_saa7134_t *chip = snd_kcontrol_chip(kcontrol);
 764         unsigned long flags;
 765         int change, addr = kcontrol->private_value;
 766         int left, right;
 767         u32 anabar, xbarin;
 768         int analog_io, rate;
 769         struct saa7134_dev *dev;
 770
 771         dev = chip->saadev;
 772
 773         left = ucontrol->value.integer.value[0] & 1;
 774         right = ucontrol->value.integer.value[1] & 1;
 775         spin_lock_irqsave(&chip->mixer_lock, flags);
 776
 777         change = chip->capture_source[addr][0] != left ||
 778                  chip->capture_source[addr][1] != right;
 779         chip->capture_source[addr][0] = left;
 780         chip->capture_source[addr][1] = right;
 781         dev->oss.input=addr;
 782         spin_unlock_irqrestore(&chip->mixer_lock, flags);
 783
 784
 785         if (change) {
 786           switch (dev->pci->device) {
 787
 788            case PCI_DEVICE_ID_PHILIPS_SAA7134:
 789                 switch (addr) {
 790                         case MIXER_ADDR_TVTUNER:
 791                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0xc0);
 792                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, 0x00);
 793                                 break;
 794                         case MIXER_ADDR_LINE1:
 795                         case MIXER_ADDR_LINE2:
 796                                 analog_io = (MIXER_ADDR_LINE1 == addr) ? 0x00 : 0x08;
 797                                 rate = (32000 == dev->oss.rate) ? 0x01 : 0x03;
 798                                 saa_andorb(SAA7134_ANALOG_IO_SELECT,  0x08, analog_io);
 799                                 saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, 0x80);
 800                                 saa_andorb(SAA7134_SIF_SAMPLE_FREQ,   0x03, rate);
 801                                 break;
 802                 }
 803
 804                 break;
 805            case PCI_DEVICE_ID_PHILIPS_SAA7133:
 806            case PCI_DEVICE_ID_PHILIPS_SAA7135:
 807                 xbarin = 0x03; // adc
 808                 anabar = 0;
 809                 switch (addr) {
 810                         case MIXER_ADDR_TVTUNER:
 811                                 xbarin = 0; // Demodulator
 812                                 anabar = 2; // DACs
 813                                 break;
 814                         case MIXER_ADDR_LINE1:
 815                                 anabar = 0;  // aux1, aux1
 816                                 break;
 817                         case MIXER_ADDR_LINE2:
 818                                 anabar = 9;  // aux2, aux2
 819                                 break;
 820                 }
 821
 822                 /* output xbar always main channel */
 823                 saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL1, 0xbbbb10);
 824
 825                 if (left || right) { // We've got data, turn the input on
 826                   //saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL2, 0x101010);
 827                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, xbarin);
 828                   saa_writel(SAA7133_ANALOG_IO_SELECT, anabar);
 829                 } else {
 830                   //saa_dsp_writel(dev, SAA7133_DIGITAL_OUTPUT_SEL2, 0x101010);
 831                   saa_dsp_writel(dev, SAA7133_DIGITAL_INPUT_XBAR1, 0);
 832                   saa_writel(SAA7133_ANALOG_IO_SELECT, 0);
 833                 }
 834                 break;
 835           }
 836         }
 837
 838         return change;
 839 }
 840
 841 static snd_kcontrol_new_t snd_saa7134_controls[] = {
 842 SAA713x_VOLUME("Video Volume", 0, MIXER_ADDR_TVTUNER),
 843 SAA713x_CAPSRC("Video Capture Switch", 0, MIXER_ADDR_TVTUNER),
 844 SAA713x_VOLUME("Line Volume", 1, MIXER_ADDR_LINE1),
 845 SAA713x_CAPSRC("Line Capture Switch", 1, MIXER_ADDR_LINE1),
 846 SAA713x_VOLUME("Line Volume", 2, MIXER_ADDR_LINE2),
 847 SAA713x_CAPSRC("Line Capture Switch", 2, MIXER_ADDR_LINE2),
 848 };
 849
 850 /*
 851  * ALSA mixer setup
 852  *
 853  *   Called when initializing the board. Sets up the name and hooks up
 854  *  the callbacks
 855  *
 856  */
 857
 858 static int snd_card_saa7134_new_mixer(snd_card_saa7134_t * chip)
 859 {
 860         snd_card_t *card = chip->card;
 861         unsigned int idx;
 862         int err;
 863
 864         snd_assert(chip != NULL, return -EINVAL);
 865         strcpy(card->mixername, "SAA7134 Mixer");
 866
 867         for (idx = 0; idx < ARRAY_SIZE(snd_saa7134_controls); idx++) {
 868                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_saa7134_controls[idx], chip))) < 0)
 869                         return err;
 870         }
 871         return 0;
 872 }
 873
 874 static int snd_saa7134_free(snd_card_saa7134_t *chip)
 875 {
 876         return 0;
 877 }
 878
 879 static int snd_saa7134_dev_free(snd_device_t *device)
 880 {
 881         snd_card_saa7134_t *chip = device->device_data;
 882         return snd_saa7134_free(chip);
 883 }
 884
 885 /*
 886  * ALSA initialization
 887  *
 888  *   Called by saa7134-core, it creates the basic structures and registers
 889  *  the ALSA devices
 890  *
 891  */
 892
 893 int alsa_card_saa7134_create(struct saa7134_dev *saadev, unsigned int devicenum)
 894 {
 895         static int dev;
 896         snd_card_t *card;
 897         snd_card_saa7134_t *chip;
 898         int err;
 899         static snd_device_ops_t ops = {
 900                 .dev_free =     snd_saa7134_dev_free,
 901         };
 902
 903         if (dev >= SNDRV_CARDS)
 904                 return -ENODEV;
 905         if (!enable[dev])
 906                 return -ENODEV;
 907
 908         if (devicenum) {
 909                 card = snd_card_new(devicenum, id[dev], THIS_MODULE, 0);
 910         } else {
 911                 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 912         }
 913         if (card == NULL)
 914                 return -ENOMEM;
 915
 916         strcpy(card->driver, "SAA7134");
 917
 918         /* Card "creation" */
 919
 920         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
 921         if (chip == NULL) {
 922                 return -ENOMEM;
 923         }
 924
 925         spin_lock_init(&chip->lock);
 926
 927         chip->saadev = saadev;
 928
 929         chip->card = card;
 930
 931         chip->pci = saadev->pci;
 932         chip->irq = saadev->pci->irq;
 933         chip->iobase = pci_resource_start(saadev->pci, 0);
 934
 935         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 936                 snd_saa7134_free(chip);
 937                 return err;
 938         }
 939
 940         if ((err = snd_card_saa7134_new_mixer(chip)) < 0)
 941                 goto __nodev;
 942
 943         if ((err = snd_card_saa7134_pcm(chip, 0)) < 0)
 944                 goto __nodev;
 945
 946         spin_lock_init(&chip->mixer_lock);
 947
 948         snd_card_set_dev(card, &chip->pci->dev);
 949
 950         /* End of "creation" */
 951
 952         strcpy(card->shortname, "SAA7134");
 953         sprintf(card->longname, "%s at 0x%lx irq %d",
 954                 chip->saadev->name, chip->iobase, chip->irq);
 955
 956         if ((err = snd_card_register(card)) == 0) {
 957                 snd_saa7134_cards[dev] = card;
 958                 return 0;
 959         }
 960
 961 __nodev:
 962         snd_card_free(card);
 963         kfree(card);
 964         return err;
 965 }
 966
 967 void alsa_card_saa7134_exit(void)
 968 {
 969         int idx;
 970          for (idx = 0; idx < SNDRV_CARDS; idx++) {
 971                 snd_card_free(snd_saa7134_cards[idx]);
 972         }
 973 }