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 /* These can be replaced after done */
  57 #define MIXER_ADDR_LAST MAX_CX88_INPUT
  58
  59 struct cx88_audio_dev {
  60         struct cx88_core           *core;
  61         struct cx88_dmaqueue       q;
  62         u64 starttime;
  63
  64         /* pci i/o */
  65         struct pci_dev             *pci;
  66
  67         /* audio controls */
  68         int                        irq;
  69
  70         struct snd_card            *card;
  71
  72         spinlock_t                 reg_lock;
  73         atomic_t                   count;
  74
  75         unsigned int               dma_size;
  76         unsigned int               period_size;
  77         unsigned int               num_periods;
  78
  79         struct videobuf_dmabuf     dma_risc;
  80
  81         int                        mixer_volume[MIXER_ADDR_LAST+1][2];
  82         int                        capture_source[MIXER_ADDR_LAST+1][2];
  83
  84         struct cx88_buffer         *buf;
  85
  86         struct snd_pcm_substream   *substream;
  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
 100 module_param_array(enable, bool, NULL, 0444);
 101 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
 102
 103 module_param_array(index, int, NULL, 0444);
 104 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
 105
 106
 107 /****************************************************************************
 108                                 Module macros
 109  ****************************************************************************/
 110
 111 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 112 MODULE_AUTHOR("Ricardo Cerqueira");
 113 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 114 MODULE_LICENSE("GPL");
 115 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 116                         "{{Conexant,23882},"
 117                         "{{Conexant,23883}");
 118 static unsigned int debug;
 119 module_param(debug,int,0644);
 120 MODULE_PARM_DESC(debug,"enable debug messages");
 121
 122 /****************************************************************************
 123                         Module specific funtions
 124  ****************************************************************************/
 125
 126 /*
 127  * BOARD Specific: Sets audio DMA
 128  */
 129
 130 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 131 {
 132         struct cx88_buffer   *buf = chip->buf;
 133         struct cx88_core *core=chip->core;
 134         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 135
 136         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 137         cx_clear(MO_AUD_DMACNTRL, 0x11);
 138
 139         /* setup fifo + format - out channel */
 140         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 141
 142         /* sets bpl size */
 143         cx_write(MO_AUDD_LNGTH, buf->bpl);
 144
 145         /* reset counter */
 146         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 147         atomic_set(&chip->count, 0);
 148
 149         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 150                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 151                 chip->num_periods, buf->bpl * chip->num_periods);
 152
 153         /* Enables corresponding bits at AUD_INT_STAT */
 154         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 155                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 156
 157         /* Clean any pending interrupt bits already set */
 158         cx_write(MO_AUD_INTSTAT, ~0);
 159
 160         /* enable audio irqs */
 161         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 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, audio_ch);
 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, PCI_INT_AUDINT);
 186         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 187                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 188
 189         if (debug)
 190                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 191
 192         return 0;
 193 }
 194
 195 #define MAX_IRQ_LOOP 50
 196
 197 /*
 198  * BOARD Specific: IRQ dma bits
 199  */
 200 static char *cx88_aud_irqs[32] = {
 201         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 202         NULL,                                     /* reserved */
 203         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 204         NULL,                                     /* reserved */
 205         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 206         NULL,                                     /* reserved */
 207         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 208         NULL,                                     /* reserved */
 209         "opc_err", "par_err", "rip_err",          /* 16-18 */
 210         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 211 };
 212
 213 /*
 214  * BOARD Specific: Threats IRQ audio specific calls
 215  */
 216 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 217 {
 218         struct cx88_core *core = chip->core;
 219         u32 status, mask;
 220
 221         status = cx_read(MO_AUD_INTSTAT);
 222         mask   = cx_read(MO_AUD_INTMSK);
 223         if (0 == (status & mask))
 224                 return;
 225         cx_write(MO_AUD_INTSTAT, status);
 226         if (debug > 1  ||  (status & mask & ~0xff))
 227                 cx88_print_irqbits(core->name, "irq aud",
 228                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 229                                    status, mask);
 230         /* risc op code error */
 231         if (status & AUD_INT_OPC_ERR) {
 232                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 233                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 234                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 235         }
 236         if (status & AUD_INT_DN_SYNC) {
 237                 dprintk(1, "Downstream sync error\n");
 238                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 239                 return;
 240         }
 241         /* risc1 downstream */
 242         if (status & AUD_INT_DN_RISCI1) {
 243                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 244                 snd_pcm_period_elapsed(chip->substream);
 245         }
 246         /* FIXME: Any other status should deserve a special handling? */
 247 }
 248
 249 /*
 250  * BOARD Specific: Handles IRQ calls
 251  */
 252 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 253 {
 254         snd_cx88_card_t *chip = dev_id;
 255         struct cx88_core *core = chip->core;
 256         u32 status;
 257         int loop, handled = 0;
 258
 259         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 260                 status = cx_read(MO_PCI_INTSTAT) &
 261                         (core->pci_irqmask | PCI_INT_AUDINT);
 262                 if (0 == status)
 263                         goto out;
 264                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 265                         loop, MAX_IRQ_LOOP, status);
 266                 handled = 1;
 267                 cx_write(MO_PCI_INTSTAT, status);
 268
 269                 if (status & core->pci_irqmask)
 270                         cx88_core_irq(core, status);
 271                 if (status & PCI_INT_AUDINT)
 272                         cx8801_aud_irq(chip);
 273         }
 274
 275         if (MAX_IRQ_LOOP == loop) {
 276                 printk(KERN_ERR
 277                        "%s/1: IRQ loop detected, disabling interrupts\n",
 278                        core->name);
 279                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 280         }
 281
 282  out:
 283         return IRQ_RETVAL(handled);
 284 }
 285
 286
 287 static int dsp_buffer_free(snd_cx88_card_t *chip)
 288 {
 289         BUG_ON(!chip->dma_size);
 290
 291         dprintk(2,"Freeing buffer\n");
 292         videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc);
 293         videobuf_dma_free(&chip->dma_risc);
 294         btcx_riscmem_free(chip->pci,&chip->buf->risc);
 295         kfree(chip->buf);
 296
 297         chip->dma_size = 0;
 298
 299         return 0;
 300 }
 301
 302 /****************************************************************************
 303                                 ALSA PCM Interface
 304  ****************************************************************************/
 305
 306 /*
 307  * Digital hardware definition
 308  */
 309 #define DEFAULT_FIFO_SIZE       4096
 310 static struct snd_pcm_hardware snd_cx88_digital_hw = {
 311         .info = SNDRV_PCM_INFO_MMAP |
 312                 SNDRV_PCM_INFO_INTERLEAVED |
 313                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 314                 SNDRV_PCM_INFO_MMAP_VALID,
 315         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 316
 317         .rates =                SNDRV_PCM_RATE_48000,
 318         .rate_min =             48000,
 319         .rate_max =             48000,
 320         .channels_min = 2,
 321         .channels_max = 2,
 322         /* Analog audio output will be full of clicks and pops if there
 323            are not exactly four lines in the SRAM FIFO buffer.  */
 324         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 325         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 326         .periods_min = 1,
 327         .periods_max = 1024,
 328         .buffer_bytes_max = (1024*1024),
 329 };
 330
 331 /*
 332  * audio pcm capture open callback
 333  */
 334 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 335 {
 336         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 337         struct snd_pcm_runtime *runtime = substream->runtime;
 338         int err;
 339
 340         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 341         if (err < 0)
 342                 goto _error;
 343
 344         chip->substream = substream;
 345
 346         runtime->hw = snd_cx88_digital_hw;
 347
 348         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 349                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 350                 bpl &= ~7; /* must be multiple of 8 */
 351                 runtime->hw.period_bytes_min = bpl;
 352                 runtime->hw.period_bytes_max = bpl;
 353         }
 354
 355         return 0;
 356 _error:
 357         dprintk(1,"Error opening PCM!\n");
 358         return err;
 359 }
 360
 361 /*
 362  * audio close callback
 363  */
 364 static int snd_cx88_close(struct snd_pcm_substream *substream)
 365 {
 366         return 0;
 367 }
 368
 369 /*
 370  * hw_params callback
 371  */
 372 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 373                               struct snd_pcm_hw_params * hw_params)
 374 {
 375         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 376         struct cx88_buffer *buf;
 377         int ret;
 378
 379         if (substream->runtime->dma_area) {
 380                 dsp_buffer_free(chip);
 381                 substream->runtime->dma_area = NULL;
 382         }
 383
 384         chip->period_size = params_period_bytes(hw_params);
 385         chip->num_periods = params_periods(hw_params);
 386         chip->dma_size = chip->period_size * params_periods(hw_params);
 387
 388         BUG_ON(!chip->dma_size);
 389         BUG_ON(chip->num_periods & (chip->num_periods-1));
 390
 391         buf = kzalloc(sizeof(*buf), GFP_KERNEL);
 392         if (NULL == buf)
 393                 return -ENOMEM;
 394
 395         buf->vb.memory = V4L2_MEMORY_MMAP;
 396         buf->vb.field  = V4L2_FIELD_NONE;
 397         buf->vb.width  = chip->period_size;
 398         buf->bpl       = chip->period_size;
 399         buf->vb.height = chip->num_periods;
 400         buf->vb.size   = chip->dma_size;
 401
 402         videobuf_dma_init(&buf->vb.dma);
 403         ret = videobuf_dma_init_kernel(&buf->vb.dma, PCI_DMA_FROMDEVICE,
 404                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
 405         if (ret < 0)
 406                 goto error;
 407
 408         ret = videobuf_pci_dma_map(chip->pci,&buf->vb.dma);
 409         if (ret < 0)
 410                 goto error;
 411
 412         ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->vb.dma.sglist,
 413                                    buf->vb.width, buf->vb.height, 1);
 414         if (ret < 0)
 415                 goto error;
 416
 417         /* Loop back to start of program */
 418         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 419         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 420
 421         buf->vb.state = STATE_PREPARED;
 422
 423         chip->buf = buf;
 424         chip->dma_risc = buf->vb.dma;
 425
 426         substream->runtime->dma_area = chip->dma_risc.vmalloc;
 427         substream->runtime->dma_bytes = chip->dma_size;
 428         substream->runtime->dma_addr = 0;
 429         return 0;
 430
 431 error:
 432         kfree(buf);
 433         return ret;
 434 }
 435
 436 /*
 437  * hw free callback
 438  */
 439 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 440 {
 441
 442         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 443
 444         if (substream->runtime->dma_area) {
 445                 dsp_buffer_free(chip);
 446                 substream->runtime->dma_area = NULL;
 447         }
 448
 449         return 0;
 450 }
 451
 452 /*
 453  * prepare callback
 454  */
 455 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 456 {
 457         return 0;
 458 }
 459
 460 /*
 461  * trigger callback
 462  */
 463 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 464 {
 465         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 466         int err;
 467
 468         /* Local interrupts are already disabled by ALSA */
 469         spin_lock(&chip->reg_lock);
 470
 471         switch (cmd) {
 472         case SNDRV_PCM_TRIGGER_START:
 473                 err=_cx88_start_audio_dma(chip);
 474                 break;
 475         case SNDRV_PCM_TRIGGER_STOP:
 476                 err=_cx88_stop_audio_dma(chip);
 477                 break;
 478         default:
 479                 err=-EINVAL;
 480                 break;
 481         }
 482
 483         spin_unlock(&chip->reg_lock);
 484
 485         return err;
 486 }
 487
 488 /*
 489  * pointer callback
 490  */
 491 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 492 {
 493         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 494         struct snd_pcm_runtime *runtime = substream->runtime;
 495         u16 count;
 496
 497         count = atomic_read(&chip->count);
 498
 499 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __FUNCTION__,
 500 //              count, new, count & (runtime->periods-1),
 501 //              runtime->period_size * (count & (runtime->periods-1)));
 502         return runtime->period_size * (count & (runtime->periods-1));
 503 }
 504
 505 /*
 506  * page callback (needed for mmap)
 507  */
 508 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
 509                                 unsigned long offset)
 510 {
 511         void *pageptr = substream->runtime->dma_area + offset;
 512         return vmalloc_to_page(pageptr);
 513 }
 514
 515 /*
 516  * operators
 517  */
 518 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 519         .open = snd_cx88_pcm_open,
 520         .close = snd_cx88_close,
 521         .ioctl = snd_pcm_lib_ioctl,
 522         .hw_params = snd_cx88_hw_params,
 523         .hw_free = snd_cx88_hw_free,
 524         .prepare = snd_cx88_prepare,
 525         .trigger = snd_cx88_card_trigger,
 526         .pointer = snd_cx88_pointer,
 527         .page = snd_cx88_page,
 528 };
 529
 530 /*
 531  * create a PCM device
 532  */
 533 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
 534 {
 535         int err;
 536         struct snd_pcm *pcm;
 537
 538         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 539         if (err < 0)
 540                 return err;
 541         pcm->private_data = chip;
 542         strcpy(pcm->name, name);
 543         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 544
 545         return 0;
 546 }
 547
 548 /****************************************************************************
 549                                 CONTROL INTERFACE
 550  ****************************************************************************/
 551 static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol,
 552                                         struct snd_ctl_elem_info *info)
 553 {
 554         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 555         info->count = 2;
 556         info->value.integer.min = 0;
 557         info->value.integer.max = 0x3f;
 558
 559         return 0;
 560 }
 561
 562 /* OK - TODO: test it */
 563 static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol,
 564                                        struct snd_ctl_elem_value *value)
 565 {
 566         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 567         struct cx88_core *core=chip->core;
 568         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
 569             bal = cx_read(AUD_BAL_CTL);
 570
 571         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
 572         vol -= (bal & 0x3f);
 573         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
 574
 575         return 0;
 576 }
 577
 578 /* OK - TODO: test it */
 579 static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol,
 580                                        struct snd_ctl_elem_value *value)
 581 {
 582         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 583         struct cx88_core *core=chip->core;
 584         int v, b;
 585         int changed = 0;
 586         u32 old;
 587
 588         b = value->value.integer.value[1] - value->value.integer.value[0];
 589         if (b < 0) {
 590             v = 0x3f - value->value.integer.value[0];
 591             b = (-b) | 0x40;
 592         } else {
 593             v = 0x3f - value->value.integer.value[1];
 594         }
 595         /* Do we really know this will always be called with IRQs on? */
 596         spin_lock_irq(&chip->reg_lock);
 597         old = cx_read(AUD_VOL_CTL);
 598         if (v != (old & 0x3f)) {
 599             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
 600             changed = 1;
 601         }
 602         if (cx_read(AUD_BAL_CTL) != b) {
 603             cx_write(AUD_BAL_CTL, b);
 604             changed = 1;
 605         }
 606         spin_unlock_irq(&chip->reg_lock);
 607
 608         return changed;
 609 }
 610
 611 static struct snd_kcontrol_new snd_cx88_capture_volume = {
 612         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 613         .name = "Capture Volume",
 614         .info = snd_cx88_capture_volume_info,
 615         .get = snd_cx88_capture_volume_get,
 616         .put = snd_cx88_capture_volume_put,
 617 };
 618
 619
 620 /****************************************************************************
 621                         Basic Flow for Sound Devices
 622  ****************************************************************************/
 623
 624 /*
 625  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 626  * Only boards with eeprom and byte 1 at eeprom=1 have it
 627  */
 628
 629 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
 630         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 631         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 632         {0, }
 633 };
 634 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 635
 636 /*
 637  * Chip-specific destructor
 638  */
 639
 640 static int snd_cx88_free(snd_cx88_card_t *chip)
 641 {
 642
 643         if (chip->irq >= 0){
 644                 synchronize_irq(chip->irq);
 645                 free_irq(chip->irq, chip);
 646         }
 647
 648         cx88_core_put(chip->core,chip->pci);
 649
 650         pci_disable_device(chip->pci);
 651         return 0;
 652 }
 653
 654 /*
 655  * Component Destructor
 656  */
 657 static void snd_cx88_dev_free(struct snd_card * card)
 658 {
 659         snd_cx88_card_t *chip = card->private_data;
 660
 661         snd_cx88_free(chip);
 662 }
 663
 664
 665 /*
 666  * Alsa Constructor - Component probe
 667  */
 668
 669 static int devno;
 670 static int __devinit snd_cx88_create(struct snd_card *card,
 671                                      struct pci_dev *pci,
 672                                      snd_cx88_card_t **rchip)
 673 {
 674         snd_cx88_card_t   *chip;
 675         struct cx88_core  *core;
 676         int               err;
 677         unsigned char     pci_lat;
 678
 679         *rchip = NULL;
 680
 681         err = pci_enable_device(pci);
 682         if (err < 0)
 683                 return err;
 684
 685         pci_set_master(pci);
 686
 687         chip = (snd_cx88_card_t *) card->private_data;
 688
 689         core = cx88_core_get(pci);
 690         if (NULL == core) {
 691                 err = -EINVAL;
 692                 kfree (chip);
 693                 return err;
 694         }
 695
 696         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
 697                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 698                 err = -EIO;
 699                 cx88_core_put(core,pci);
 700                 return err;
 701         }
 702
 703
 704         /* pci init */
 705         chip->card = card;
 706         chip->pci = pci;
 707         chip->irq = -1;
 708         spin_lock_init(&chip->reg_lock);
 709
 710         chip->core = core;
 711
 712         /* get irq */
 713         err = request_irq(chip->pci->irq, cx8801_irq,
 714                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 715         if (err < 0) {
 716                 dprintk(0, "%s: can't get IRQ %d\n",
 717                        chip->core->name, chip->pci->irq);
 718                 return err;
 719         }
 720
 721         /* print pci info */
 722         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 723
 724         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 725                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 726                pci_name(pci), pci->revision, pci->irq,
 727                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 728
 729         chip->irq = pci->irq;
 730         synchronize_irq(chip->irq);
 731
 732         snd_card_set_dev(card, &pci->dev);
 733
 734         *rchip = chip;
 735
 736         return 0;
 737 }
 738
 739 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 740                                     const struct pci_device_id *pci_id)
 741 {
 742         struct snd_card  *card;
 743         snd_cx88_card_t  *chip;
 744         int              err;
 745
 746         if (devno >= SNDRV_CARDS)
 747                 return (-ENODEV);
 748
 749         if (!enable[devno]) {
 750                 ++devno;
 751                 return (-ENOENT);
 752         }
 753
 754         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
 755         if (!card)
 756                 return (-ENOMEM);
 757
 758         card->private_free = snd_cx88_dev_free;
 759
 760         err = snd_cx88_create(card, pci, &chip);
 761         if (err < 0)
 762                 return (err);
 763
 764         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 765         if (err < 0)
 766                 goto error;
 767
 768         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip));
 769         if (err < 0)
 770                 goto error;
 771
 772         strcpy (card->driver, "CX88x");
 773         sprintf(card->shortname, "Conexant CX%x", pci->device);
 774         sprintf(card->longname, "%s at %#llx",
 775                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 776         strcpy (card->mixername, "CX88");
 777
 778         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 779                card->driver,devno);
 780
 781         err = snd_card_register(card);
 782         if (err < 0)
 783                 goto error;
 784         pci_set_drvdata(pci,card);
 785
 786         devno++;
 787         return 0;
 788
 789 error:
 790         snd_card_free(card);
 791         return err;
 792 }
 793 /*
 794  * ALSA destructor
 795  */
 796 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 797 {
 798         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 799
 800         snd_card_free((void *)card);
 801
 802         pci_set_drvdata(pci, NULL);
 803
 804         devno--;
 805 }
 806
 807 /*
 808  * PCI driver definition
 809  */
 810
 811 static struct pci_driver cx88_audio_pci_driver = {
 812         .name     = "cx88_audio",
 813         .id_table = cx88_audio_pci_tbl,
 814         .probe    = cx88_audio_initdev,
 815         .remove   = cx88_audio_finidev,
 816 };
 817
 818 /****************************************************************************
 819                                 LINUX MODULE INIT
 820  ****************************************************************************/
 821
 822 /*
 823  * module init
 824  */
 825 static int cx88_audio_init(void)
 826 {
 827         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 828                (CX88_VERSION_CODE >> 16) & 0xff,
 829                (CX88_VERSION_CODE >>  8) & 0xff,
 830                CX88_VERSION_CODE & 0xff);
 831 #ifdef SNAPSHOT
 832         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 833                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 834 #endif
 835         return pci_register_driver(&cx88_audio_pci_driver);
 836 }
 837
 838 /*
 839  * module remove
 840  */
 841 static void cx88_audio_fini(void)
 842 {
 843
 844         pci_unregister_driver(&cx88_audio_pci_driver);
 845 }
 846
 847 module_init(cx88_audio_init);
 848 module_exit(cx88_audio_fini);
 849
 850 /* ----------------------------------------------------------- */
 851 /*
 852  * Local variables:
 853  * c-basic-offset: 8
 854  * End:
 855  */