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

   1 /*
   2  *
   3  *  Support for audio capture
   4  *  PCI function #1 of the cx2388x.
   5  *
   6  *    (c) 2007 Trent Piepho <xyzzy@speakeasy.org>
   7  *    (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org>
   8  *    (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
   9  *    Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org>
  10  *    Based on dummy.c by Jaroslav Kysela <perex@suse.cz>
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This program is distributed in the hope that it will be useful,
  18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  *  GNU General Public License for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License
  23  *  along with this program; if not, write to the Free Software
  24  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #include <linux/module.h>
  28 #include <linux/init.h>
  29 #include <linux/device.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/vmalloc.h>
  32 #include <linux/dma-mapping.h>
  33 #include <linux/pci.h>
  34
  35 #include <asm/delay.h>
  36 #include <sound/driver.h>
  37 #include <sound/core.h>
  38 #include <sound/pcm.h>
  39 #include <sound/pcm_params.h>
  40 #include <sound/control.h>
  41 #include <sound/initval.h>
  42
  43 #include "cx88.h"
  44 #include "cx88-reg.h"
  45
  46 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  47         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
  48
  49 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
  50         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
  51
  52 /****************************************************************************
  53         Data type declarations - Can be moded to a header file later
  54  ****************************************************************************/
  55
  56 struct cx88_audio_dev {
  57         struct cx88_core           *core;
  58         struct cx88_dmaqueue       q;
  59
  60         /* pci i/o */
  61         struct pci_dev             *pci;
  62
  63         /* audio controls */
  64         int                        irq;
  65
  66         struct snd_card            *card;
  67
  68         spinlock_t                 reg_lock;
  69         atomic_t                   count;
  70
  71         unsigned int               dma_size;
  72         unsigned int               period_size;
  73         unsigned int               num_periods;
  74
  75         struct videobuf_dmabuf     *dma_risc;
  76
  77         struct cx88_buffer         *buf;
  78
  79         struct snd_pcm_substream   *substream;
  80 };
  81 typedef struct cx88_audio_dev snd_cx88_card_t;
  82
  83
  84
  85 /****************************************************************************
  86                         Module global static vars
  87  ****************************************************************************/
  88
  89 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  90 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  91 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
  92
  93 module_param_array(enable, bool, NULL, 0444);
  94 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
  95
  96 module_param_array(index, int, NULL, 0444);
  97 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
  98
  99
 100 /****************************************************************************
 101                                 Module macros
 102  ****************************************************************************/
 103
 104 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 105 MODULE_AUTHOR("Ricardo Cerqueira");
 106 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 107 MODULE_LICENSE("GPL");
 108 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 109                         "{{Conexant,23882},"
 110                         "{{Conexant,23883}");
 111 static unsigned int debug;
 112 module_param(debug,int,0644);
 113 MODULE_PARM_DESC(debug,"enable debug messages");
 114
 115 /****************************************************************************
 116                         Module specific funtions
 117  ****************************************************************************/
 118
 119 /*
 120  * BOARD Specific: Sets audio DMA
 121  */
 122
 123 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 124 {
 125         struct cx88_buffer   *buf = chip->buf;
 126         struct cx88_core *core=chip->core;
 127         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 128
 129         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 130         cx_clear(MO_AUD_DMACNTRL, 0x11);
 131
 132         /* setup fifo + format - out channel */
 133         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 134
 135         /* sets bpl size */
 136         cx_write(MO_AUDD_LNGTH, buf->bpl);
 137
 138         /* reset counter */
 139         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 140         atomic_set(&chip->count, 0);
 141
 142         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 143                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 144                 chip->num_periods, buf->bpl * chip->num_periods);
 145
 146         /* Enables corresponding bits at AUD_INT_STAT */
 147         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 148                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 149
 150         /* Clean any pending interrupt bits already set */
 151         cx_write(MO_AUD_INTSTAT, ~0);
 152
 153         /* enable audio irqs */
 154         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 155
 156         /* start dma */
 157         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 158         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 159
 160         if (debug)
 161                 cx88_sram_channel_dump(chip->core, audio_ch);
 162
 163         return 0;
 164 }
 165
 166 /*
 167  * BOARD Specific: Resets audio DMA
 168  */
 169 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 170 {
 171         struct cx88_core *core=chip->core;
 172         dprintk(1, "Stopping audio DMA\n");
 173
 174         /* stop dma */
 175         cx_clear(MO_AUD_DMACNTRL, 0x11);
 176
 177         /* disable irqs */
 178         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 179         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 180                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 181
 182         if (debug)
 183                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 184
 185         return 0;
 186 }
 187
 188 #define MAX_IRQ_LOOP 50
 189
 190 /*
 191  * BOARD Specific: IRQ dma bits
 192  */
 193 static char *cx88_aud_irqs[32] = {
 194         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 195         NULL,                                     /* reserved */
 196         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 197         NULL,                                     /* reserved */
 198         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 199         NULL,                                     /* reserved */
 200         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 201         NULL,                                     /* reserved */
 202         "opc_err", "par_err", "rip_err",          /* 16-18 */
 203         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 204 };
 205
 206 /*
 207  * BOARD Specific: Threats IRQ audio specific calls
 208  */
 209 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 210 {
 211         struct cx88_core *core = chip->core;
 212         u32 status, mask;
 213
 214         status = cx_read(MO_AUD_INTSTAT);
 215         mask   = cx_read(MO_AUD_INTMSK);
 216         if (0 == (status & mask))
 217                 return;
 218         cx_write(MO_AUD_INTSTAT, status);
 219         if (debug > 1  ||  (status & mask & ~0xff))
 220                 cx88_print_irqbits(core->name, "irq aud",
 221                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 222                                    status, mask);
 223         /* risc op code error */
 224         if (status & AUD_INT_OPC_ERR) {
 225                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 226                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 227                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 228         }
 229         if (status & AUD_INT_DN_SYNC) {
 230                 dprintk(1, "Downstream sync error\n");
 231                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 232                 return;
 233         }
 234         /* risc1 downstream */
 235         if (status & AUD_INT_DN_RISCI1) {
 236                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 237                 snd_pcm_period_elapsed(chip->substream);
 238         }
 239         /* FIXME: Any other status should deserve a special handling? */
 240 }
 241
 242 /*
 243  * BOARD Specific: Handles IRQ calls
 244  */
 245 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 246 {
 247         snd_cx88_card_t *chip = dev_id;
 248         struct cx88_core *core = chip->core;
 249         u32 status;
 250         int loop, handled = 0;
 251
 252         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 253                 status = cx_read(MO_PCI_INTSTAT) &
 254                         (core->pci_irqmask | PCI_INT_AUDINT);
 255                 if (0 == status)
 256                         goto out;
 257                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 258                         loop, MAX_IRQ_LOOP, status);
 259                 handled = 1;
 260                 cx_write(MO_PCI_INTSTAT, status);
 261
 262                 if (status & core->pci_irqmask)
 263                         cx88_core_irq(core, status);
 264                 if (status & PCI_INT_AUDINT)
 265                         cx8801_aud_irq(chip);
 266         }
 267
 268         if (MAX_IRQ_LOOP == loop) {
 269                 printk(KERN_ERR
 270                        "%s/1: IRQ loop detected, disabling interrupts\n",
 271                        core->name);
 272                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 273         }
 274
 275  out:
 276         return IRQ_RETVAL(handled);
 277 }
 278
 279
 280 static int dsp_buffer_free(snd_cx88_card_t *chip)
 281 {
 282         BUG_ON(!chip->dma_size);
 283
 284         dprintk(2,"Freeing buffer\n");
 285         videobuf_pci_dma_unmap(chip->pci, chip->dma_risc);
 286         videobuf_dma_free(chip->dma_risc);
 287         btcx_riscmem_free(chip->pci,&chip->buf->risc);
 288         kfree(chip->buf);
 289
 290         chip->dma_risc = NULL;
 291         chip->dma_size = 0;
 292
 293         return 0;
 294 }
 295
 296 /****************************************************************************
 297                                 ALSA PCM Interface
 298  ****************************************************************************/
 299
 300 /*
 301  * Digital hardware definition
 302  */
 303 #define DEFAULT_FIFO_SIZE       4096
 304 static struct snd_pcm_hardware snd_cx88_digital_hw = {
 305         .info = SNDRV_PCM_INFO_MMAP |
 306                 SNDRV_PCM_INFO_INTERLEAVED |
 307                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 308                 SNDRV_PCM_INFO_MMAP_VALID,
 309         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 310
 311         .rates =                SNDRV_PCM_RATE_48000,
 312         .rate_min =             48000,
 313         .rate_max =             48000,
 314         .channels_min = 2,
 315         .channels_max = 2,
 316         /* Analog audio output will be full of clicks and pops if there
 317            are not exactly four lines in the SRAM FIFO buffer.  */
 318         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 319         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 320         .periods_min = 1,
 321         .periods_max = 1024,
 322         .buffer_bytes_max = (1024*1024),
 323 };
 324
 325 /*
 326  * audio pcm capture open callback
 327  */
 328 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 329 {
 330         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 331         struct snd_pcm_runtime *runtime = substream->runtime;
 332         int err;
 333
 334         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 335         if (err < 0)
 336                 goto _error;
 337
 338         chip->substream = substream;
 339
 340         runtime->hw = snd_cx88_digital_hw;
 341
 342         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 343                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 344                 bpl &= ~7; /* must be multiple of 8 */
 345                 runtime->hw.period_bytes_min = bpl;
 346                 runtime->hw.period_bytes_max = bpl;
 347         }
 348
 349         return 0;
 350 _error:
 351         dprintk(1,"Error opening PCM!\n");
 352         return err;
 353 }
 354
 355 /*
 356  * audio close callback
 357  */
 358 static int snd_cx88_close(struct snd_pcm_substream *substream)
 359 {
 360         return 0;
 361 }
 362
 363 /*
 364  * hw_params callback
 365  */
 366 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 367                               struct snd_pcm_hw_params * hw_params)
 368 {
 369         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 370         struct videobuf_dmabuf *dma;
 371
 372         struct cx88_buffer *buf;
 373         int ret;
 374
 375         if (substream->runtime->dma_area) {
 376                 dsp_buffer_free(chip);
 377                 substream->runtime->dma_area = NULL;
 378         }
 379
 380         chip->period_size = params_period_bytes(hw_params);
 381         chip->num_periods = params_periods(hw_params);
 382         chip->dma_size = chip->period_size * params_periods(hw_params);
 383
 384         BUG_ON(!chip->dma_size);
 385         BUG_ON(chip->num_periods & (chip->num_periods-1));
 386
 387         buf = videobuf_pci_alloc(sizeof(*buf));
 388         if (NULL == buf)
 389                 return -ENOMEM;
 390
 391         buf->vb.memory = V4L2_MEMORY_MMAP;
 392         buf->vb.field  = V4L2_FIELD_NONE;
 393         buf->vb.width  = chip->period_size;
 394         buf->bpl       = chip->period_size;
 395         buf->vb.height = chip->num_periods;
 396         buf->vb.size   = chip->dma_size;
 397
 398         dma=videobuf_to_dma(&buf->vb);
 399         videobuf_dma_init(dma);
 400         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
 401                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
 402         if (ret < 0)
 403                 goto error;
 404
 405         ret = videobuf_pci_dma_map(chip->pci,dma);
 406         if (ret < 0)
 407                 goto error;
 408
 409         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
 410                                    buf->vb.width, buf->vb.height, 1);
 411         if (ret < 0)
 412                 goto error;
 413
 414         /* Loop back to start of program */
 415         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 416         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 417
 418         buf->vb.state = STATE_PREPARED;
 419
 420         chip->buf = buf;
 421         chip->dma_risc = dma;
 422
 423         substream->runtime->dma_area = chip->dma_risc->vmalloc;
 424         substream->runtime->dma_bytes = chip->dma_size;
 425         substream->runtime->dma_addr = 0;
 426         return 0;
 427
 428 error:
 429         kfree(buf);
 430         return ret;
 431 }
 432
 433 /*
 434  * hw free callback
 435  */
 436 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 437 {
 438
 439         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 440
 441         if (substream->runtime->dma_area) {
 442                 dsp_buffer_free(chip);
 443                 substream->runtime->dma_area = NULL;
 444         }
 445
 446         return 0;
 447 }
 448
 449 /*
 450  * prepare callback
 451  */
 452 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 453 {
 454         return 0;
 455 }
 456
 457 /*
 458  * trigger callback
 459  */
 460 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 461 {
 462         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 463         int err;
 464
 465         /* Local interrupts are already disabled by ALSA */
 466         spin_lock(&chip->reg_lock);
 467
 468         switch (cmd) {
 469         case SNDRV_PCM_TRIGGER_START:
 470                 err=_cx88_start_audio_dma(chip);
 471                 break;
 472         case SNDRV_PCM_TRIGGER_STOP:
 473                 err=_cx88_stop_audio_dma(chip);
 474                 break;
 475         default:
 476                 err=-EINVAL;
 477                 break;
 478         }
 479
 480         spin_unlock(&chip->reg_lock);
 481
 482         return err;
 483 }
 484
 485 /*
 486  * pointer callback
 487  */
 488 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 489 {
 490         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 491         struct snd_pcm_runtime *runtime = substream->runtime;
 492         u16 count;
 493
 494         count = atomic_read(&chip->count);
 495
 496 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __FUNCTION__,
 497 //              count, new, count & (runtime->periods-1),
 498 //              runtime->period_size * (count & (runtime->periods-1)));
 499         return runtime->period_size * (count & (runtime->periods-1));
 500 }
 501
 502 /*
 503  * page callback (needed for mmap)
 504  */
 505 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
 506                                 unsigned long offset)
 507 {
 508         void *pageptr = substream->runtime->dma_area + offset;
 509         return vmalloc_to_page(pageptr);
 510 }
 511
 512 /*
 513  * operators
 514  */
 515 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 516         .open = snd_cx88_pcm_open,
 517         .close = snd_cx88_close,
 518         .ioctl = snd_pcm_lib_ioctl,
 519         .hw_params = snd_cx88_hw_params,
 520         .hw_free = snd_cx88_hw_free,
 521         .prepare = snd_cx88_prepare,
 522         .trigger = snd_cx88_card_trigger,
 523         .pointer = snd_cx88_pointer,
 524         .page = snd_cx88_page,
 525 };
 526
 527 /*
 528  * create a PCM device
 529  */
 530 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
 531 {
 532         int err;
 533         struct snd_pcm *pcm;
 534
 535         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 536         if (err < 0)
 537                 return err;
 538         pcm->private_data = chip;
 539         strcpy(pcm->name, name);
 540         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 541
 542         return 0;
 543 }
 544
 545 /****************************************************************************
 546                                 CONTROL INTERFACE
 547  ****************************************************************************/
 548 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
 549                                         struct snd_ctl_elem_info *info)
 550 {
 551         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 552         info->count = 2;
 553         info->value.integer.min = 0;
 554         info->value.integer.max = 0x3f;
 555
 556         return 0;
 557 }
 558
 559 /* OK - TODO: test it */
 560 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
 561                                        struct snd_ctl_elem_value *value)
 562 {
 563         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 564         struct cx88_core *core=chip->core;
 565         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
 566             bal = cx_read(AUD_BAL_CTL);
 567
 568         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
 569         vol -= (bal & 0x3f);
 570         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
 571
 572         return 0;
 573 }
 574
 575 /* OK - TODO: test it */
 576 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
 577                                        struct snd_ctl_elem_value *value)
 578 {
 579         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 580         struct cx88_core *core=chip->core;
 581         int v, b;
 582         int changed = 0;
 583         u32 old;
 584
 585         b = value->value.integer.value[1] - value->value.integer.value[0];
 586         if (b < 0) {
 587             v = 0x3f - value->value.integer.value[0];
 588             b = (-b) | 0x40;
 589         } else {
 590             v = 0x3f - value->value.integer.value[1];
 591         }
 592         /* Do we really know this will always be called with IRQs on? */
 593         spin_lock_irq(&chip->reg_lock);
 594         old = cx_read(AUD_VOL_CTL);
 595         if (v != (old & 0x3f)) {
 596             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
 597             changed = 1;
 598         }
 599         if (cx_read(AUD_BAL_CTL) != b) {
 600             cx_write(AUD_BAL_CTL, b);
 601             changed = 1;
 602         }
 603         spin_unlock_irq(&chip->reg_lock);
 604
 605         return changed;
 606 }
 607
 608 static struct snd_kcontrol_new snd_cx88_capture_volume = {
 609         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 610         .name = "Capture Volume",
 611         .info = snd_cx88_capture_volume_info,
 612         .get = snd_cx88_capture_volume_get,
 613         .put = snd_cx88_capture_volume_put,
 614 };
 615
 616
 617 /****************************************************************************
 618                         Basic Flow for Sound Devices
 619  ****************************************************************************/
 620
 621 /*
 622  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 623  * Only boards with eeprom and byte 1 at eeprom=1 have it
 624  */
 625
 626 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
 627         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 628         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 629         {0, }
 630 };
 631 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 632
 633 /*
 634  * Chip-specific destructor
 635  */
 636
 637 static int snd_cx88_free(snd_cx88_card_t *chip)
 638 {
 639
 640         if (chip->irq >= 0){
 641                 synchronize_irq(chip->irq);
 642                 free_irq(chip->irq, chip);
 643         }
 644
 645         cx88_core_put(chip->core,chip->pci);
 646
 647         pci_disable_device(chip->pci);
 648         return 0;
 649 }
 650
 651 /*
 652  * Component Destructor
 653  */
 654 static void snd_cx88_dev_free(struct snd_card * card)
 655 {
 656         snd_cx88_card_t *chip = card->private_data;
 657
 658         snd_cx88_free(chip);
 659 }
 660
 661
 662 /*
 663  * Alsa Constructor - Component probe
 664  */
 665
 666 static int devno;
 667 static int __devinit snd_cx88_create(struct snd_card *card,
 668                                      struct pci_dev *pci,
 669                                      snd_cx88_card_t **rchip)
 670 {
 671         snd_cx88_card_t   *chip;
 672         struct cx88_core  *core;
 673         int               err;
 674         unsigned char     pci_lat;
 675
 676         *rchip = NULL;
 677
 678         err = pci_enable_device(pci);
 679         if (err < 0)
 680                 return err;
 681
 682         pci_set_master(pci);
 683
 684         chip = (snd_cx88_card_t *) card->private_data;
 685
 686         core = cx88_core_get(pci);
 687         if (NULL == core) {
 688                 err = -EINVAL;
 689                 kfree (chip);
 690                 return err;
 691         }
 692
 693         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
 694                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 695                 err = -EIO;
 696                 cx88_core_put(core,pci);
 697                 return err;
 698         }
 699
 700
 701         /* pci init */
 702         chip->card = card;
 703         chip->pci = pci;
 704         chip->irq = -1;
 705         spin_lock_init(&chip->reg_lock);
 706
 707         chip->core = core;
 708
 709         /* get irq */
 710         err = request_irq(chip->pci->irq, cx8801_irq,
 711                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 712         if (err < 0) {
 713                 dprintk(0, "%s: can't get IRQ %d\n",
 714                        chip->core->name, chip->pci->irq);
 715                 return err;
 716         }
 717
 718         /* print pci info */
 719         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 720
 721         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 722                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 723                pci_name(pci), pci->revision, pci->irq,
 724                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 725
 726         chip->irq = pci->irq;
 727         synchronize_irq(chip->irq);
 728
 729         snd_card_set_dev(card, &pci->dev);
 730
 731         *rchip = chip;
 732
 733         return 0;
 734 }
 735
 736 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 737                                     const struct pci_device_id *pci_id)
 738 {
 739         struct snd_card  *card;
 740         snd_cx88_card_t  *chip;
 741         int              err;
 742
 743         if (devno >= SNDRV_CARDS)
 744                 return (-ENODEV);
 745
 746         if (!enable[devno]) {
 747                 ++devno;
 748                 return (-ENOENT);
 749         }
 750
 751         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
 752         if (!card)
 753                 return (-ENOMEM);
 754
 755         card->private_free = snd_cx88_dev_free;
 756
 757         err = snd_cx88_create(card, pci, &chip);
 758         if (err < 0)
 759                 return (err);
 760
 761         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 762         if (err < 0)
 763                 goto error;
 764
 765         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
 766         if (err < 0)
 767                 goto error;
 768
 769         strcpy (card->driver, "CX88x");
 770         sprintf(card->shortname, "Conexant CX%x", pci->device);
 771         sprintf(card->longname, "%s at %#llx",
 772                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 773         strcpy (card->mixername, "CX88");
 774
 775         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 776                card->driver,devno);
 777
 778         err = snd_card_register(card);
 779         if (err < 0)
 780                 goto error;
 781         pci_set_drvdata(pci,card);
 782
 783         devno++;
 784         return 0;
 785
 786 error:
 787         snd_card_free(card);
 788         return err;
 789 }
 790 /*
 791  * ALSA destructor
 792  */
 793 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 794 {
 795         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 796
 797         snd_card_free((void *)card);
 798
 799         pci_set_drvdata(pci, NULL);
 800
 801         devno--;
 802 }
 803
 804 /*
 805  * PCI driver definition
 806  */
 807
 808 static struct pci_driver cx88_audio_pci_driver = {
 809         .name     = "cx88_audio",
 810         .id_table = cx88_audio_pci_tbl,
 811         .probe    = cx88_audio_initdev,
 812         .remove   = cx88_audio_finidev,
 813 };
 814
 815 /****************************************************************************
 816                                 LINUX MODULE INIT
 817  ****************************************************************************/
 818
 819 /*
 820  * module init
 821  */
 822 static int cx88_audio_init(void)
 823 {
 824         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 825                (CX88_VERSION_CODE >> 16) & 0xff,
 826                (CX88_VERSION_CODE >>  8) & 0xff,
 827                CX88_VERSION_CODE & 0xff);
 828 #ifdef SNAPSHOT
 829         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 830                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 831 #endif
 832         return pci_register_driver(&cx88_audio_pci_driver);
 833 }
 834
 835 /*
 836  * module remove
 837  */
 838 static void cx88_audio_fini(void)
 839 {
 840
 841         pci_unregister_driver(&cx88_audio_pci_driver);
 842 }
 843
 844 module_init(cx88_audio_init);
 845 module_exit(cx88_audio_fini);
 846
 847 /* ----------------------------------------------------------- */
 848 /*
 849  * Local variables:
 850  * c-basic-offset: 8
 851  * End:
 852  */