drivers/media/video/cx88/cx88-alsa.c

   1 /*
   2  *
   3  *  Support for audio capture
   4  *  PCI function #1 of the cx2388x.
   5  *
   6  *    (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
   7  *    (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
   8  *    Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
   9  *    Based on dummy.c by Jaroslav Kysela <perex@suse.cz>
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/init.h>
  28 #include <linux/device.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/dma-mapping.h>
  31
  32 #include <asm/delay.h>
  33 #include <sound/driver.h>
  34 #include <sound/core.h>
  35 #include <sound/pcm.h>
  36 #include <sound/pcm_params.h>
  37 #include <sound/control.h>
  38 #include <sound/initval.h>
  39
  40 #include "cx88.h"
  41 #include "cx88-reg.h"
  42
  43 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  44         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
  45
  46 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
  47         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
  48
  49
  50 /****************************************************************************
  51         Data type declarations - Can be moded to a header file later
  52  ****************************************************************************/
  53
  54 /* These can be replaced after done */
  55 #define MIXER_ADDR_LAST MAX_CX88_INPUT
  56
  57 struct cx88_audio_dev {
  58         struct cx88_core           *core;
  59         struct cx88_dmaqueue       q;
  60
  61         /* pci i/o */
  62         struct pci_dev             *pci;
  63         unsigned char              pci_rev,pci_lat;
  64
  65         /* audio controls */
  66         int                        irq;
  67
  68         struct snd_card            *card;
  69
  70         spinlock_t                 reg_lock;
  71
  72         unsigned int               dma_size;
  73         unsigned int               period_size;
  74         unsigned int               num_periods;
  75
  76         struct videobuf_dmabuf dma_risc;
  77
  78         int                        mixer_volume[MIXER_ADDR_LAST+1][2];
  79         int                        capture_source[MIXER_ADDR_LAST+1][2];
  80
  81         long int read_count;
  82         long int read_offset;
  83
  84         struct cx88_buffer   *buf;
  85
  86         long opened;
  87         struct snd_pcm_substream *substream;
  88
  89 };
  90 typedef struct cx88_audio_dev snd_cx88_card_t;
  91
  92
  93
  94 /****************************************************************************
  95                         Module global static vars
  96  ****************************************************************************/
  97
  98 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  99 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 100 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
 101 static struct snd_card *snd_cx88_cards[SNDRV_CARDS];
 102
 103 module_param_array(enable, bool, NULL, 0444);
 104 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
 105
 106 module_param_array(index, int, NULL, 0444);
 107 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
 108
 109
 110 /****************************************************************************
 111                                 Module macros
 112  ****************************************************************************/
 113
 114 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 115 MODULE_AUTHOR("Ricardo Cerqueira");
 116 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 117 MODULE_LICENSE("GPL");
 118 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 119                         "{{Conexant,23882},"
 120                         "{{Conexant,23883}");
 121 static unsigned int debug;
 122 module_param(debug,int,0644);
 123 MODULE_PARM_DESC(debug,"enable debug messages");
 124
 125 /****************************************************************************
 126                         Module specific funtions
 127  ****************************************************************************/
 128
 129 /*
 130  * BOARD Specific: Sets audio DMA
 131  */
 132
 133 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 134 {
 135         struct cx88_buffer   *buf = chip->buf;
 136         struct cx88_core *core=chip->core;
 137         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 138
 139
 140         dprintk(1, "Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x\n",buf->bpl, chip->num_periods, audio_ch->fifo_size / buf->bpl, audio_ch->fifo_start);
 141
 142         /* setup fifo + format - out channel */
 143         cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25],
 144                                 buf->bpl, buf->risc.dma);
 145
 146         /* sets bpl size */
 147         cx_write(MO_AUDD_LNGTH, buf->bpl);
 148
 149         /* reset counter */
 150         cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET);
 151
 152         dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02));
 153         /* enable irqs */
 154         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02);
 155
 156
 157         /* Enables corresponding bits at AUD_INT_STAT */
 158         cx_write(MO_AUD_INTMSK,
 159                         (1<<16)|
 160                         (1<<12)|
 161                         (1<<4)|
 162                         (1<<0)
 163                         );
 164
 165         /* start dma */
 166         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 167         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 168
 169         if (debug)
 170                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 171
 172         return 0;
 173 }
 174
 175 /*
 176  * BOARD Specific: Resets audio DMA
 177  */
 178 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 179 {
 180         struct cx88_core *core=chip->core;
 181         dprintk(1, "Stopping audio DMA\n");
 182
 183         /* stop dma */
 184         cx_clear(MO_AUD_DMACNTRL, 0x11);
 185
 186         /* disable irqs */
 187         cx_clear(MO_PCI_INTMSK, 0x02);
 188         cx_clear(MO_AUD_INTMSK,
 189                         (1<<16)|
 190                         (1<<12)|
 191                         (1<<4)|
 192                         (1<<0)
 193                         );
 194
 195         if (debug)
 196                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 197
 198         return 0;
 199 }
 200
 201 #define MAX_IRQ_LOOP 10
 202
 203 /*
 204  * BOARD Specific: IRQ dma bits
 205  */
 206 static char *cx88_aud_irqs[32] = {
 207         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 208         NULL,                                     /* reserved */
 209         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 210         NULL,                                     /* reserved */
 211         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 212         NULL,                                     /* reserved */
 213         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 214         NULL,                                     /* reserved */
 215         "opc_err", "par_err", "rip_err",          /* 16-18 */
 216         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 217 };
 218
 219 /*
 220  * BOARD Specific: Threats IRQ audio specific calls
 221  */
 222 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 223 {
 224         struct cx88_core *core = chip->core;
 225         u32 status, mask;
 226         u32 count;
 227
 228         status = cx_read(MO_AUD_INTSTAT);
 229         mask   = cx_read(MO_AUD_INTMSK);
 230         if (0 == (status & mask)) {
 231                 spin_unlock(&chip->reg_lock);
 232                 return;
 233         }
 234         cx_write(MO_AUD_INTSTAT, status);
 235         if (debug > 1  ||  (status & mask & ~0xff))
 236                 cx88_print_irqbits(core->name, "irq aud",
 237                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 238                                    status, mask);
 239         /* risc op code error */
 240         if (status & (1 << 16)) {
 241                 printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name);
 242                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 243                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 244         }
 245
 246         /* risc1 downstream */
 247         if (status & 0x01) {
 248                 spin_lock(&chip->reg_lock);
 249                 count = cx_read(MO_AUDD_GPCNT);
 250                 spin_unlock(&chip->reg_lock);
 251                 if (chip->read_count == 0)
 252                         chip->read_count += chip->dma_size;
 253         }
 254
 255         if  (chip->read_count >= chip->period_size) {
 256                 dprintk(2, "Elapsing period\n");
 257                 snd_pcm_period_elapsed(chip->substream);
 258         }
 259
 260         dprintk(3,"Leaving audio IRQ handler...\n");
 261
 262         /* FIXME: Any other status should deserve a special handling? */
 263 }
 264
 265 /*
 266  * BOARD Specific: Handles IRQ calls
 267  */
 268 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 269 {
 270         snd_cx88_card_t *chip = dev_id;
 271         struct cx88_core *core = chip->core;
 272         u32 status;
 273         int loop, handled = 0;
 274
 275         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 276                 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02);
 277                 if (0 == status)
 278                         goto out;
 279                 dprintk( 3, "cx8801_irq\n" );
 280                 dprintk( 3, "    loop: %d/%d\n", loop, MAX_IRQ_LOOP );
 281                 dprintk( 3, "    status: %d\n", status );
 282                 handled = 1;
 283                 cx_write(MO_PCI_INTSTAT, status);
 284
 285                 if (status & 0x02)
 286                 {
 287                         dprintk( 2, "    ALSA IRQ handling\n" );
 288                         cx8801_aud_irq(chip);
 289                 }
 290         };
 291
 292         if (MAX_IRQ_LOOP == loop) {
 293                 dprintk( 0, "clearing mask\n" );
 294                 dprintk(1,"%s/0: irq loop -- clearing mask\n",
 295                        core->name);
 296                 cx_clear(MO_PCI_INTMSK,0x02);
 297         }
 298
 299  out:
 300         return IRQ_RETVAL(handled);
 301 }
 302
 303
 304 static int dsp_buffer_free(snd_cx88_card_t *chip)
 305 {
 306         BUG_ON(!chip->dma_size);
 307
 308         dprintk(2,"Freeing buffer\n");
 309         videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
 310         videobuf_dma_free(&chip->dma_risc);
 311         btcx_riscmem_free(chip->pci,&chip->buf->risc);
 312         kfree(chip->buf);
 313
 314         chip->dma_size = 0;
 315
 316        return 0;
 317 }
 318
 319 /****************************************************************************
 320                                 ALSA PCM Interface
 321  ****************************************************************************/
 322
 323 /*
 324  * Digital hardware definition
 325  */
 326 static struct snd_pcm_hardware snd_cx88_digital_hw = {
 327         .info = SNDRV_PCM_INFO_MMAP |
 328                 SNDRV_PCM_INFO_INTERLEAVED |
 329                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 330                 SNDRV_PCM_INFO_MMAP_VALID,
 331         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 332
 333         .rates =                SNDRV_PCM_RATE_48000,
 334         .rate_min =             48000,
 335         .rate_max =             48000,
 336         .channels_min = 1,
 337         .channels_max = 2,
 338         .buffer_bytes_max = (2*2048),
 339         .period_bytes_min = 2048,
 340         .period_bytes_max = 2048,
 341         .periods_min = 2,
 342         .periods_max = 2,
 343 };
 344
 345 /*
 346  * audio pcm capture runtime free
 347  */
 348 static void snd_card_cx88_runtime_free(struct snd_pcm_runtime *runtime)
 349 {
 350 }
 351 /*
 352  * audio pcm capture open callback
 353  */
 354 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 355 {
 356         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 357         struct snd_pcm_runtime *runtime = substream->runtime;
 358         int err;
 359
 360         if (test_and_set_bit(0, &chip->opened))
 361                 return -EBUSY;
 362
 363         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 364         if (err < 0)
 365                 goto _error;
 366
 367         chip->substream = substream;
 368
 369         chip->read_count = 0;
 370         chip->read_offset = 0;
 371
 372         runtime->private_free = snd_card_cx88_runtime_free;
 373         runtime->hw = snd_cx88_digital_hw;
 374
 375         return 0;
 376 _error:
 377         dprintk(1,"Error opening PCM!\n");
 378         clear_bit(0, &chip->opened);
 379         smp_mb__after_clear_bit();
 380         return err;
 381 }
 382
 383 /*
 384  * audio close callback
 385  */
 386 static int snd_cx88_close(struct snd_pcm_substream *substream)
 387 {
 388         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 389
 390         clear_bit(0, &chip->opened);
 391         smp_mb__after_clear_bit();
 392
 393         return 0;
 394 }
 395
 396 /*
 397  * hw_params callback
 398  */
 399 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 400                               struct snd_pcm_hw_params * hw_params)
 401 {
 402         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 403         struct cx88_buffer *buf;
 404
 405         if (substream->runtime->dma_area) {
 406                 dsp_buffer_free(chip);
 407                 substream->runtime->dma_area = NULL;
 408         }
 409
 410
 411         chip->period_size = params_period_bytes(hw_params);
 412         chip->num_periods = params_periods(hw_params);
 413         chip->dma_size = chip->period_size * params_periods(hw_params);
 414
 415         BUG_ON(!chip->dma_size);
 416
 417         dprintk(1,"Setting buffer\n");
 418
 419         buf = kzalloc(sizeof(*buf),GFP_KERNEL);
 420         if (NULL == buf)
 421                 return -ENOMEM;
 422
 423         buf->vb.memory = V4L2_MEMORY_MMAP;
 424         buf->vb.width  = chip->period_size;
 425         buf->vb.height = chip->num_periods;
 426         buf->vb.size   = chip->dma_size;
 427         buf->vb.field  = V4L2_FIELD_NONE;
 428
 429         videobuf_dma_init(&buf->vb.dma);
 430         videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE,
 431                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
 432
 433         videobuf_pci_dma_map(chip->pci,&buf->vb.dma);
 434
 435
 436         cx88_risc_databuffer(chip->pci, &buf->risc,
 437                         buf->vb.dma.sglist,
 438                         buf->vb.width, buf->vb.height);
 439
 440         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
 441         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 442
 443         buf->vb.state = STATE_PREPARED;
 444
 445         buf->bpl = chip->period_size;
 446         chip->buf = buf;
 447         chip->dma_risc = buf->vb.dma;
 448
 449         dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages);
 450         substream->runtime->dma_area = chip->dma_risc.vmalloc;
 451         return 0;
 452 }
 453
 454 /*
 455  * hw free callback
 456  */
 457 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 458 {
 459
 460         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 461
 462         if (substream->runtime->dma_area) {
 463                 dsp_buffer_free(chip);
 464                 substream->runtime->dma_area = NULL;
 465         }
 466
 467         return 0;
 468 }
 469
 470 /*
 471  * prepare callback
 472  */
 473 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 474 {
 475         return 0;
 476 }
 477
 478
 479 /*
 480  * trigger callback
 481  */
 482 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 483 {
 484         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 485         int err;
 486
 487         spin_lock(&chip->reg_lock);
 488
 489         switch (cmd) {
 490         case SNDRV_PCM_TRIGGER_START:
 491                 err=_cx88_start_audio_dma(chip);
 492                 break;
 493         case SNDRV_PCM_TRIGGER_STOP:
 494                 err=_cx88_stop_audio_dma(chip);
 495                 break;
 496         default:
 497                 err=-EINVAL;
 498                 break;
 499         }
 500
 501         spin_unlock(&chip->reg_lock);
 502
 503         return err;
 504 }
 505
 506 /*
 507  * pointer callback
 508  */
 509 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 510 {
 511         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 512         struct snd_pcm_runtime *runtime = substream->runtime;
 513
 514         if (chip->read_count) {
 515                 chip->read_count -= snd_pcm_lib_period_bytes(substream);
 516                 chip->read_offset += snd_pcm_lib_period_bytes(substream);
 517                 if (chip->read_offset == chip->dma_size)
 518                         chip->read_offset = 0;
 519         }
 520
 521         dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count);
 522         return bytes_to_frames(runtime, chip->read_offset);
 523
 524 }
 525
 526 /*
 527  * operators
 528  */
 529 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 530         .open = snd_cx88_pcm_open,
 531         .close = snd_cx88_close,
 532         .ioctl = snd_pcm_lib_ioctl,
 533         .hw_params = snd_cx88_hw_params,
 534         .hw_free = snd_cx88_hw_free,
 535         .prepare = snd_cx88_prepare,
 536         .trigger = snd_cx88_card_trigger,
 537         .pointer = snd_cx88_pointer,
 538 };
 539
 540 /*
 541  * create a PCM device
 542  */
 543 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
 544 {
 545         int err;
 546         struct snd_pcm *pcm;
 547
 548         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 549         if (err < 0)
 550                 return err;
 551         pcm->private_data = chip;
 552         strcpy(pcm->name, name);
 553         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 554
 555         return 0;
 556 }
 557
 558 /****************************************************************************
 559                                 CONTROL INTERFACE
 560  ****************************************************************************/
 561 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
 562                                         struct snd_ctl_elem_info *info)
 563 {
 564         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 565         info->count = 1;
 566         info->value.integer.min = 0;
 567         info->value.integer.max = 0x3f;
 568
 569         return 0;
 570 }
 571
 572 /* OK - TODO: test it */
 573 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
 574                                        struct snd_ctl_elem_value *value)
 575 {
 576         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 577         struct cx88_core *core=chip->core;
 578
 579         value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
 580
 581         return 0;
 582 }
 583
 584 /* OK - TODO: test it */
 585 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
 586                                        struct snd_ctl_elem_value *value)
 587 {
 588         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 589         struct cx88_core *core=chip->core;
 590         int v;
 591         u32 old_control;
 592
 593         spin_lock_irq(&chip->reg_lock);
 594         old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
 595         v = 0x3f - (value->value.integer.value[0] & 0x3f);
 596         cx_andor(AUD_VOL_CTL, 0x3f, v);
 597         spin_unlock_irq(&chip->reg_lock);
 598
 599         return v != old_control;
 600 }
 601
 602 static struct snd_kcontrol_new snd_cx88_capture_volume = {
 603         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 604         .name = "Capture Volume",
 605         .info = snd_cx88_capture_volume_info,
 606         .get = snd_cx88_capture_volume_get,
 607         .put = snd_cx88_capture_volume_put,
 608 };
 609
 610
 611 /****************************************************************************
 612                         Basic Flow for Sound Devices
 613  ****************************************************************************/
 614
 615 /*
 616  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 617  * Only boards with eeprom and byte 1 at eeprom=1 have it
 618  */
 619
 620 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
 621         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 622         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 623         {0, }
 624 };
 625 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 626
 627 /*
 628  * Chip-specific destructor
 629  */
 630
 631 static int snd_cx88_free(snd_cx88_card_t *chip)
 632 {
 633
 634         if (chip->irq >= 0){
 635                 synchronize_irq(chip->irq);
 636                 free_irq(chip->irq, chip);
 637         }
 638
 639         cx88_core_put(chip->core,chip->pci);
 640
 641         pci_disable_device(chip->pci);
 642         return 0;
 643 }
 644
 645 /*
 646  * Component Destructor
 647  */
 648 static void snd_cx88_dev_free(struct snd_card * card)
 649 {
 650         snd_cx88_card_t *chip = card->private_data;
 651
 652         snd_cx88_free(chip);
 653 }
 654
 655
 656 /*
 657  * Alsa Constructor - Component probe
 658  */
 659
 660 static int devno;
 661 static int __devinit snd_cx88_create(struct snd_card *card,
 662                                      struct pci_dev *pci,
 663                                      snd_cx88_card_t **rchip)
 664 {
 665         snd_cx88_card_t   *chip;
 666         struct cx88_core  *core;
 667         int               err;
 668
 669         *rchip = NULL;
 670
 671         err = pci_enable_device(pci);
 672         if (err < 0)
 673                 return err;
 674
 675         pci_set_master(pci);
 676
 677         chip = (snd_cx88_card_t *) card->private_data;
 678
 679         core = cx88_core_get(pci);
 680         if (NULL == core) {
 681                 err = -EINVAL;
 682                 kfree (chip);
 683                 return err;
 684         }
 685
 686         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
 687                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 688                 err = -EIO;
 689                 cx88_core_put(core,pci);
 690                 return err;
 691         }
 692
 693
 694         /* pci init */
 695         chip->card = card;
 696         chip->pci = pci;
 697         chip->irq = -1;
 698         spin_lock_init(&chip->reg_lock);
 699
 700         chip->core = core;
 701
 702         /* get irq */
 703         err = request_irq(chip->pci->irq, cx8801_irq,
 704                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 705         if (err < 0) {
 706                 dprintk(0, "%s: can't get IRQ %d\n",
 707                        chip->core->name, chip->pci->irq);
 708                 return err;
 709         }
 710
 711         /* print pci info */
 712         pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev);
 713         pci_read_config_byte(pci, PCI_LATENCY_TIMER,  &chip->pci_lat);
 714
 715         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 716                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 717                pci_name(pci), chip->pci_rev, pci->irq,
 718                chip->pci_lat,(unsigned long long)pci_resource_start(pci,0));
 719
 720         chip->irq = pci->irq;
 721         synchronize_irq(chip->irq);
 722
 723         snd_card_set_dev(card, &pci->dev);
 724
 725         *rchip = chip;
 726
 727         return 0;
 728 }
 729
 730 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 731                                     const struct pci_device_id *pci_id)
 732 {
 733         struct snd_card  *card;
 734         snd_cx88_card_t  *chip;
 735         int              err;
 736
 737         if (devno >= SNDRV_CARDS)
 738                 return (-ENODEV);
 739
 740         if (!enable[devno]) {
 741                 ++devno;
 742                 return (-ENOENT);
 743         }
 744
 745         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
 746         if (!card)
 747                 return (-ENOMEM);
 748
 749         card->private_free = snd_cx88_dev_free;
 750
 751         err = snd_cx88_create(card, pci, &chip);
 752         if (err < 0)
 753                 return (err);
 754
 755         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 756
 757         if (err < 0) {
 758                 snd_card_free(card);
 759                 return (err);
 760         }
 761
 762         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
 763         if (err < 0) {
 764                 snd_card_free(card);
 765                 return (err);
 766         }
 767
 768         strcpy (card->driver, "CX88x");
 769         sprintf(card->shortname, "Conexant CX%x", pci->device);
 770         sprintf(card->longname, "%s at %#llx",
 771                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 772         strcpy (card->mixername, "CX88");
 773
 774         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 775                card->driver,devno);
 776
 777         err = snd_card_register(card);
 778         if (err < 0) {
 779                 snd_card_free(card);
 780                 return (err);
 781         }
 782         snd_cx88_cards[devno] = card;
 783
 784         pci_set_drvdata(pci,card);
 785
 786         devno++;
 787         return 0;
 788 }
 789 /*
 790  * ALSA destructor
 791  */
 792 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 793 {
 794         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 795
 796         snd_card_free((void *)card);
 797
 798         pci_set_drvdata(pci, NULL);
 799
 800         devno--;
 801 }
 802
 803 /*
 804  * PCI driver definition
 805  */
 806
 807 static struct pci_driver cx88_audio_pci_driver = {
 808         .name     = "cx88_audio",
 809         .id_table = cx88_audio_pci_tbl,
 810         .probe    = cx88_audio_initdev,
 811         .remove   = cx88_audio_finidev,
 812 };
 813
 814 /****************************************************************************
 815                                 LINUX MODULE INIT
 816  ****************************************************************************/
 817
 818 /*
 819  * module init
 820  */
 821 static int cx88_audio_init(void)
 822 {
 823         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 824                (CX88_VERSION_CODE >> 16) & 0xff,
 825                (CX88_VERSION_CODE >>  8) & 0xff,
 826                CX88_VERSION_CODE & 0xff);
 827 #ifdef SNAPSHOT
 828         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 829                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 830 #endif
 831         return pci_register_driver(&cx88_audio_pci_driver);
 832 }
 833
 834 /*
 835  * module remove
 836  */
 837 static void cx88_audio_fini(void)
 838 {
 839
 840         pci_unregister_driver(&cx88_audio_pci_driver);
 841 }
 842
 843 module_init(cx88_audio_init);
 844 module_exit(cx88_audio_fini);
 845
 846 /* ----------------------------------------------------------- */
 847 /*
 848  * Local variables:
 849  * c-basic-offset: 8
 850  * End:
 851  */