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