SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/dma-mapping.h>
  32 #include <linux/pci.h>
  33
  34 #include <asm/delay.h>
  35 #include <sound/driver.h>
  36 #include <sound/core.h>
  37 #include <sound/pcm.h>
  38 #include <sound/pcm_params.h>
  39 #include <sound/control.h>
  40 #include <sound/initval.h>
  41
  42 #include "cx88.h"
  43 #include "cx88-reg.h"
  44
  45 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  46         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
  47
  48 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
  49         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
  50
  51 /****************************************************************************
  52         Data type declarations - Can be moded to a header file later
  53  ****************************************************************************/
  54
  55 /* These can be replaced after done */
  56 #define MIXER_ADDR_LAST MAX_CX88_INPUT
  57
  58 struct cx88_audio_dev {
  59         struct cx88_core           *core;
  60         struct cx88_dmaqueue       q;
  61         u64 starttime;
  62
  63         /* pci i/o */
  64         struct pci_dev             *pci;
  65
  66         /* audio controls */
  67         int                        irq;
  68
  69         struct snd_card            *card;
  70
  71         spinlock_t                 reg_lock;
  72         atomic_t                   count;
  73
  74         unsigned int               dma_size;
  75         unsigned int               period_size;
  76         unsigned int               num_periods;
  77
  78         struct videobuf_dmabuf     dma_risc;
  79
  80         int                        mixer_volume[MIXER_ADDR_LAST+1][2];
  81         int                        capture_source[MIXER_ADDR_LAST+1][2];
  82
  83         struct cx88_buffer         *buf;
  84
  85         struct snd_pcm_substream   *substream;
  86 };
  87 typedef struct cx88_audio_dev snd_cx88_card_t;
  88
  89
  90
  91 /****************************************************************************
  92                         Module global static vars
  93  ****************************************************************************/
  94
  95 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  96 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  97 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
  98
  99 module_param_array(enable, bool, NULL, 0444);
 100 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
 101
 102 module_param_array(index, int, NULL, 0444);
 103 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
 104
 105
 106 /****************************************************************************
 107                                 Module macros
 108  ****************************************************************************/
 109
 110 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 111 MODULE_AUTHOR("Ricardo Cerqueira");
 112 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 113 MODULE_LICENSE("GPL");
 114 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 115                         "{{Conexant,23882},"
 116                         "{{Conexant,23883}");
 117 static unsigned int debug;
 118 module_param(debug,int,0644);
 119 MODULE_PARM_DESC(debug,"enable debug messages");
 120
 121 /****************************************************************************
 122                         Module specific funtions
 123  ****************************************************************************/
 124
 125 /*
 126  * BOARD Specific: Sets audio DMA
 127  */
 128
 129 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 130 {
 131         struct cx88_buffer   *buf = chip->buf;
 132         struct cx88_core *core=chip->core;
 133         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 134
 135         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 136         cx_clear(MO_AUD_DMACNTRL, 0x11);
 137
 138         /* setup fifo + format - out channel */
 139         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 140
 141         /* sets bpl size */
 142         cx_write(MO_AUDD_LNGTH, buf->bpl);
 143
 144         /* reset counter */
 145         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 146         atomic_set(&chip->count, 0);
 147
 148         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 149                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 150                 chip->num_periods, buf->bpl * chip->num_periods);
 151
 152         /* Enables corresponding bits at AUD_INT_STAT */
 153         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 154                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 155
 156         /* Clean any pending interrupt bits already set */
 157         cx_write(MO_AUD_INTSTAT, ~0);
 158
 159         /* enable audio irqs */
 160         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 161
 162         /* start dma */
 163         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 164         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 165
 166         if (debug)
 167                 cx88_sram_channel_dump(chip->core, audio_ch);
 168
 169         return 0;
 170 }
 171
 172 /*
 173  * BOARD Specific: Resets audio DMA
 174  */
 175 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 176 {
 177         struct cx88_core *core=chip->core;
 178         dprintk(1, "Stopping audio DMA\n");
 179
 180         /* stop dma */
 181         cx_clear(MO_AUD_DMACNTRL, 0x11);
 182
 183         /* disable irqs */
 184         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 185         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 186                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 187
 188         if (debug)
 189                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 190
 191         return 0;
 192 }
 193
 194 #define MAX_IRQ_LOOP 50
 195
 196 /*
 197  * BOARD Specific: IRQ dma bits
 198  */
 199 static char *cx88_aud_irqs[32] = {
 200         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 201         NULL,                                     /* reserved */
 202         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 203         NULL,                                     /* reserved */
 204         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 205         NULL,                                     /* reserved */
 206         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 207         NULL,                                     /* reserved */
 208         "opc_err", "par_err", "rip_err",          /* 16-18 */
 209         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 210 };
 211
 212 /*
 213  * BOARD Specific: Threats IRQ audio specific calls
 214  */
 215 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 216 {
 217         struct cx88_core *core = chip->core;
 218         u32 status, mask;
 219
 220         status = cx_read(MO_AUD_INTSTAT);
 221         mask   = cx_read(MO_AUD_INTMSK);
 222         if (0 == (status & mask))
 223                 return;
 224         cx_write(MO_AUD_INTSTAT, status);
 225         if (debug > 1  ||  (status & mask & ~0xff))
 226                 cx88_print_irqbits(core->name, "irq aud",
 227                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 228                                    status, mask);
 229         /* risc op code error */
 230         if (status & AUD_INT_OPC_ERR) {
 231                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 232                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 233                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 234         }
 235         if (status & AUD_INT_DN_SYNC) {
 236                 dprintk(1, "Downstream sync error\n");
 237                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 238                 return;
 239         }
 240         /* risc1 downstream */
 241         if (status & AUD_INT_DN_RISCI1) {
 242                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 243                 snd_pcm_period_elapsed(chip->substream);
 244         }
 245         /* FIXME: Any other status should deserve a special handling? */
 246 }
 247
 248 /*
 249  * BOARD Specific: Handles IRQ calls
 250  */
 251 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 252 {
 253         snd_cx88_card_t *chip = dev_id;
 254         struct cx88_core *core = chip->core;
 255         u32 status;
 256         int loop, handled = 0;
 257
 258         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 259                 status = cx_read(MO_PCI_INTSTAT) &
 260                         (core->pci_irqmask | PCI_INT_AUDINT);
 261                 if (0 == status)
 262                         goto out;
 263                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 264                         loop, MAX_IRQ_LOOP, status);
 265                 handled = 1;
 266                 cx_write(MO_PCI_INTSTAT, status);
 267
 268                 if (status & core->pci_irqmask)
 269                         cx88_core_irq(core, status);
 270                 if (status & PCI_INT_AUDINT)
 271                         cx8801_aud_irq(chip);
 272         }
 273
 274         if (MAX_IRQ_LOOP == loop) {
 275                 printk(KERN_ERR
 276                        "%s/1: IRQ loop detected, disabling interrupts\n",
 277                        core->name);
 278                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 279         }
 280
 281  out:
 282         return IRQ_RETVAL(handled);
 283 }
 284
 285
 286 static int dsp_buffer_free(snd_cx88_card_t *chip)
 287 {
 288         BUG_ON(!chip->dma_size);
 289
 290         dprintk(2,"Freeing buffer\n");
 291         videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
 292         videobuf_dma_free(&chip->dma_risc);
 293         btcx_riscmem_free(chip->pci,&chip->buf->risc);
 294         kfree(chip->buf);
 295
 296         chip->dma_size = 0;
 297
 298         return 0;
 299 }
 300
 301 /****************************************************************************
 302                                 ALSA PCM Interface
 303  ****************************************************************************/
 304
 305 /*
 306  * Digital hardware definition
 307  */
 308 #define DEFAULT_FIFO_SIZE       4096
 309 static struct snd_pcm_hardware snd_cx88_digital_hw = {
 310         .info = SNDRV_PCM_INFO_MMAP |
 311                 SNDRV_PCM_INFO_INTERLEAVED |
 312                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 313                 SNDRV_PCM_INFO_MMAP_VALID,
 314         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 315
 316         .rates =                SNDRV_PCM_RATE_48000,
 317         .rate_min =             48000,
 318         .rate_max =             48000,
 319         .channels_min = 2,
 320         .channels_max = 2,
 321         /* Analog audio output will be full of clicks and pops if there
 322            are not exactly four lines in the SRAM FIFO buffer.  */
 323         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 324         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 325         .periods_min = 1,
 326         .periods_max = 1024,
 327         .buffer_bytes_max = (1024*1024),
 328 };
 329
 330 /*
 331  * audio pcm capture open callback
 332  */
 333 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 334 {
 335         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 336         struct snd_pcm_runtime *runtime = substream->runtime;
 337         int err;
 338
 339         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 340         if (err < 0)
 341                 goto _error;
 342
 343         chip->substream = substream;
 344
 345         runtime->hw = snd_cx88_digital_hw;
 346
 347         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 348                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 349                 bpl &= ~7; /* must be multiple of 8 */
 350                 runtime->hw.period_bytes_min = bpl;
 351                 runtime->hw.period_bytes_max = bpl;
 352         }
 353
 354         return 0;
 355 _error:
 356         dprintk(1,"Error opening PCM!\n");
 357         return err;
 358 }
 359
 360 /*
 361  * audio close callback
 362  */
 363 static int snd_cx88_close(struct snd_pcm_substream *substream)
 364 {
 365         return 0;
 366 }
 367
 368 /*
 369  * hw_params callback
 370  */
 371 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 372                               struct snd_pcm_hw_params * hw_params)
 373 {
 374         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 375         struct cx88_buffer *buf;
 376         int ret;
 377
 378         if (substream->runtime->dma_area) {
 379                 dsp_buffer_free(chip);
 380                 substream->runtime->dma_area = NULL;
 381         }
 382
 383         chip->period_size = params_period_bytes(hw_params);
 384         chip->num_periods = params_periods(hw_params);
 385         chip->dma_size = chip->period_size * params_periods(hw_params);
 386
 387         BUG_ON(!chip->dma_size);
 388         BUG_ON(chip->num_periods & (chip->num_periods-1));
 389
 390         buf = kzalloc(sizeof(*buf), GFP_KERNEL);
 391         if (NULL == buf)
 392                 return -ENOMEM;
 393
 394         buf->vb.memory = V4L2_MEMORY_MMAP;
 395         buf->vb.field  = V4L2_FIELD_NONE;
 396         buf->vb.width  = chip->period_size;
 397         buf->bpl       = chip->period_size;
 398         buf->vb.height = chip->num_periods;
 399         buf->vb.size   = chip->dma_size;
 400
 401         videobuf_dma_init(&buf->vb.dma);
 402         ret = videobuf_dma_init_kernel(&buf->vb.dma, PCI_DMA_FROMDEVICE,
 403                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
 404         if (ret < 0)
 405                 goto error;
 406
 407         ret = videobuf_pci_dma_map(chip->pci,&buf->vb.dma);
 408         if (ret < 0)
 409                 goto error;
 410
 411         ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->vb.dma.sglist,
 412                                    buf->vb.width, buf->vb.height, 1);
 413         if (ret < 0)
 414                 goto error;
 415
 416         /* Loop back to start of program */
 417         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 418         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 419
 420         buf->vb.state = STATE_PREPARED;
 421
 422         chip->buf = buf;
 423         chip->dma_risc = buf->vb.dma;
 424
 425         substream->runtime->dma_area = chip->dma_risc.vmalloc;
 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  * operators
 504  */
 505 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 506         .open = snd_cx88_pcm_open,
 507         .close = snd_cx88_close,
 508         .ioctl = snd_pcm_lib_ioctl,
 509         .hw_params = snd_cx88_hw_params,
 510         .hw_free = snd_cx88_hw_free,
 511         .prepare = snd_cx88_prepare,
 512         .trigger = snd_cx88_card_trigger,
 513         .pointer = snd_cx88_pointer,
 514 };
 515
 516 /*
 517  * create a PCM device
 518  */
 519 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
 520 {
 521         int err;
 522         struct snd_pcm *pcm;
 523
 524         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 525         if (err < 0)
 526                 return err;
 527         pcm->private_data = chip;
 528         strcpy(pcm->name, name);
 529         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 530
 531         return 0;
 532 }
 533
 534 /****************************************************************************
 535                                 CONTROL INTERFACE
 536  ****************************************************************************/
 537 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
 538                                         struct snd_ctl_elem_info *info)
 539 {
 540         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 541         info->count = 1;
 542         info->value.integer.min = 0;
 543         info->value.integer.max = 0x3f;
 544
 545         return 0;
 546 }
 547
 548 /* OK - TODO: test it */
 549 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
 550                                        struct snd_ctl_elem_value *value)
 551 {
 552         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 553         struct cx88_core *core=chip->core;
 554
 555         value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
 556
 557         return 0;
 558 }
 559
 560 /* OK - TODO: test it */
 561 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
 562                                        struct snd_ctl_elem_value *value)
 563 {
 564         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 565         struct cx88_core *core=chip->core;
 566         int v;
 567         u32 old_control;
 568
 569         /* Do we really know this will always be called with IRQs on? */
 570         spin_lock_irq(&chip->reg_lock);
 571
 572         old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f);
 573         v = 0x3f - (value->value.integer.value[0] & 0x3f);
 574         cx_andor(AUD_VOL_CTL, 0x3f, v);
 575
 576         spin_unlock_irq(&chip->reg_lock);
 577
 578         return v != old_control;
 579 }
 580
 581 static struct snd_kcontrol_new snd_cx88_capture_volume = {
 582         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 583         .name = "Capture Volume",
 584         .info = snd_cx88_capture_volume_info,
 585         .get = snd_cx88_capture_volume_get,
 586         .put = snd_cx88_capture_volume_put,
 587 };
 588
 589
 590 /****************************************************************************
 591                         Basic Flow for Sound Devices
 592  ****************************************************************************/
 593
 594 /*
 595  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 596  * Only boards with eeprom and byte 1 at eeprom=1 have it
 597  */
 598
 599 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
 600         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 601         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 602         {0, }
 603 };
 604 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 605
 606 /*
 607  * Chip-specific destructor
 608  */
 609
 610 static int snd_cx88_free(snd_cx88_card_t *chip)
 611 {
 612
 613         if (chip->irq >= 0){
 614                 synchronize_irq(chip->irq);
 615                 free_irq(chip->irq, chip);
 616         }
 617
 618         cx88_core_put(chip->core,chip->pci);
 619
 620         pci_disable_device(chip->pci);
 621         return 0;
 622 }
 623
 624 /*
 625  * Component Destructor
 626  */
 627 static void snd_cx88_dev_free(struct snd_card * card)
 628 {
 629         snd_cx88_card_t *chip = card->private_data;
 630
 631         snd_cx88_free(chip);
 632 }
 633
 634
 635 /*
 636  * Alsa Constructor - Component probe
 637  */
 638
 639 static int devno;
 640 static int __devinit snd_cx88_create(struct snd_card *card,
 641                                      struct pci_dev *pci,
 642                                      snd_cx88_card_t **rchip)
 643 {
 644         snd_cx88_card_t   *chip;
 645         struct cx88_core  *core;
 646         int               err;
 647         unsigned char     pci_lat;
 648
 649         *rchip = NULL;
 650
 651         err = pci_enable_device(pci);
 652         if (err < 0)
 653                 return err;
 654
 655         pci_set_master(pci);
 656
 657         chip = (snd_cx88_card_t *) card->private_data;
 658
 659         core = cx88_core_get(pci);
 660         if (NULL == core) {
 661                 err = -EINVAL;
 662                 kfree (chip);
 663                 return err;
 664         }
 665
 666         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
 667                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 668                 err = -EIO;
 669                 cx88_core_put(core,pci);
 670                 return err;
 671         }
 672
 673
 674         /* pci init */
 675         chip->card = card;
 676         chip->pci = pci;
 677         chip->irq = -1;
 678         spin_lock_init(&chip->reg_lock);
 679
 680         chip->core = core;
 681
 682         /* get irq */
 683         err = request_irq(chip->pci->irq, cx8801_irq,
 684                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 685         if (err < 0) {
 686                 dprintk(0, "%s: can't get IRQ %d\n",
 687                        chip->core->name, chip->pci->irq);
 688                 return err;
 689         }
 690
 691         /* print pci info */
 692         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 693
 694         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 695                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 696                pci_name(pci), pci->revision, pci->irq,
 697                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 698
 699         chip->irq = pci->irq;
 700         synchronize_irq(chip->irq);
 701
 702         snd_card_set_dev(card, &pci->dev);
 703
 704         *rchip = chip;
 705
 706         return 0;
 707 }
 708
 709 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 710                                     const struct pci_device_id *pci_id)
 711 {
 712         struct snd_card  *card;
 713         snd_cx88_card_t  *chip;
 714         int              err;
 715
 716         if (devno >= SNDRV_CARDS)
 717                 return (-ENODEV);
 718
 719         if (!enable[devno]) {
 720                 ++devno;
 721                 return (-ENOENT);
 722         }
 723
 724         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
 725         if (!card)
 726                 return (-ENOMEM);
 727
 728         card->private_free = snd_cx88_dev_free;
 729
 730         err = snd_cx88_create(card, pci, &chip);
 731         if (err < 0)
 732                 return (err);
 733
 734         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 735
 736         if (err < 0) {
 737                 snd_card_free(card);
 738                 return (err);
 739         }
 740
 741         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
 742         if (err < 0) {
 743                 snd_card_free(card);
 744                 return (err);
 745         }
 746
 747         strcpy (card->driver, "CX88x");
 748         sprintf(card->shortname, "Conexant CX%x", pci->device);
 749         sprintf(card->longname, "%s at %#llx",
 750                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 751         strcpy (card->mixername, "CX88");
 752
 753         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 754                card->driver,devno);
 755
 756         err = snd_card_register(card);
 757         if (err < 0) {
 758                 snd_card_free(card);
 759                 return (err);
 760         }
 761         pci_set_drvdata(pci,card);
 762
 763         devno++;
 764         return 0;
 765 }
 766 /*
 767  * ALSA destructor
 768  */
 769 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 770 {
 771         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 772
 773         snd_card_free((void *)card);
 774
 775         pci_set_drvdata(pci, NULL);
 776
 777         devno--;
 778 }
 779
 780 /*
 781  * PCI driver definition
 782  */
 783
 784 static struct pci_driver cx88_audio_pci_driver = {
 785         .name     = "cx88_audio",
 786         .id_table = cx88_audio_pci_tbl,
 787         .probe    = cx88_audio_initdev,
 788         .remove   = cx88_audio_finidev,
 789 };
 790
 791 /****************************************************************************
 792                                 LINUX MODULE INIT
 793  ****************************************************************************/
 794
 795 /*
 796  * module init
 797  */
 798 static int cx88_audio_init(void)
 799 {
 800         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 801                (CX88_VERSION_CODE >> 16) & 0xff,
 802                (CX88_VERSION_CODE >>  8) & 0xff,
 803                CX88_VERSION_CODE & 0xff);
 804 #ifdef SNAPSHOT
 805         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 806                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 807 #endif
 808         return pci_register_driver(&cx88_audio_pci_driver);
 809 }
 810
 811 /*
 812  * module remove
 813  */
 814 static void cx88_audio_fini(void)
 815 {
 816
 817         pci_unregister_driver(&cx88_audio_pci_driver);
 818 }
 819
 820 module_init(cx88_audio_init);
 821 module_exit(cx88_audio_fini);
 822
 823 /* ----------------------------------------------------------- */
 824 /*
 825  * Local variables:
 826  * c-basic-offset: 8
 827  * End:
 828  */