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@perex.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/core.h>
  37 #include <sound/pcm.h>
  38 #include <sound/pcm_params.h>
  39 #include <sound/control.h>
  40 #include <sound/initval.h>
  41 #include <sound/tlv.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_sg_dma_unmap(&chip->pci->dev, 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         if (!chip) {
 335                 printk(KERN_ERR "BUG: cx88 can't find device struct."
 336                                 " Can't proceed with open\n");
 337                 return -ENODEV;
 338         }
 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 videobuf_dmabuf *dma;
 377
 378         struct cx88_buffer *buf;
 379         int ret;
 380
 381         if (substream->runtime->dma_area) {
 382                 dsp_buffer_free(chip);
 383                 substream->runtime->dma_area = NULL;
 384         }
 385
 386         chip->period_size = params_period_bytes(hw_params);
 387         chip->num_periods = params_periods(hw_params);
 388         chip->dma_size = chip->period_size * params_periods(hw_params);
 389
 390         BUG_ON(!chip->dma_size);
 391         BUG_ON(chip->num_periods & (chip->num_periods-1));
 392
 393         buf = videobuf_sg_alloc(sizeof(*buf));
 394         if (NULL == buf)
 395                 return -ENOMEM;
 396
 397         buf->vb.memory = V4L2_MEMORY_MMAP;
 398         buf->vb.field  = V4L2_FIELD_NONE;
 399         buf->vb.width  = chip->period_size;
 400         buf->bpl       = chip->period_size;
 401         buf->vb.height = chip->num_periods;
 402         buf->vb.size   = chip->dma_size;
 403
 404         dma = videobuf_to_dma(&buf->vb);
 405         videobuf_dma_init(dma);
 406         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
 407                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
 408         if (ret < 0)
 409                 goto error;
 410
 411         ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
 412         if (ret < 0)
 413                 goto error;
 414
 415         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
 416                                    buf->vb.width, buf->vb.height, 1);
 417         if (ret < 0)
 418                 goto error;
 419
 420         /* Loop back to start of program */
 421         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 422         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 423
 424         buf->vb.state = VIDEOBUF_PREPARED;
 425
 426         chip->buf = buf;
 427         chip->dma_risc = dma;
 428
 429         substream->runtime->dma_area = chip->dma_risc->vmalloc;
 430         substream->runtime->dma_bytes = chip->dma_size;
 431         substream->runtime->dma_addr = 0;
 432         return 0;
 433
 434 error:
 435         kfree(buf);
 436         return ret;
 437 }
 438
 439 /*
 440  * hw free callback
 441  */
 442 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 443 {
 444
 445         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 446
 447         if (substream->runtime->dma_area) {
 448                 dsp_buffer_free(chip);
 449                 substream->runtime->dma_area = NULL;
 450         }
 451
 452         return 0;
 453 }
 454
 455 /*
 456  * prepare callback
 457  */
 458 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 459 {
 460         return 0;
 461 }
 462
 463 /*
 464  * trigger callback
 465  */
 466 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 467 {
 468         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 469         int err;
 470
 471         /* Local interrupts are already disabled by ALSA */
 472         spin_lock(&chip->reg_lock);
 473
 474         switch (cmd) {
 475         case SNDRV_PCM_TRIGGER_START:
 476                 err=_cx88_start_audio_dma(chip);
 477                 break;
 478         case SNDRV_PCM_TRIGGER_STOP:
 479                 err=_cx88_stop_audio_dma(chip);
 480                 break;
 481         default:
 482                 err=-EINVAL;
 483                 break;
 484         }
 485
 486         spin_unlock(&chip->reg_lock);
 487
 488         return err;
 489 }
 490
 491 /*
 492  * pointer callback
 493  */
 494 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 495 {
 496         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 497         struct snd_pcm_runtime *runtime = substream->runtime;
 498         u16 count;
 499
 500         count = atomic_read(&chip->count);
 501
 502 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
 503 //              count, new, count & (runtime->periods-1),
 504 //              runtime->period_size * (count & (runtime->periods-1)));
 505         return runtime->period_size * (count & (runtime->periods-1));
 506 }
 507
 508 /*
 509  * page callback (needed for mmap)
 510  */
 511 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
 512                                 unsigned long offset)
 513 {
 514         void *pageptr = substream->runtime->dma_area + offset;
 515         return vmalloc_to_page(pageptr);
 516 }
 517
 518 /*
 519  * operators
 520  */
 521 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 522         .open = snd_cx88_pcm_open,
 523         .close = snd_cx88_close,
 524         .ioctl = snd_pcm_lib_ioctl,
 525         .hw_params = snd_cx88_hw_params,
 526         .hw_free = snd_cx88_hw_free,
 527         .prepare = snd_cx88_prepare,
 528         .trigger = snd_cx88_card_trigger,
 529         .pointer = snd_cx88_pointer,
 530         .page = snd_cx88_page,
 531 };
 532
 533 /*
 534  * create a PCM device
 535  */
 536 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
 537 {
 538         int err;
 539         struct snd_pcm *pcm;
 540
 541         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 542         if (err < 0)
 543                 return err;
 544         pcm->private_data = chip;
 545         strcpy(pcm->name, name);
 546         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 547
 548         return 0;
 549 }
 550
 551 /****************************************************************************
 552                                 CONTROL INTERFACE
 553  ****************************************************************************/
 554 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
 555                                 struct snd_ctl_elem_info *info)
 556 {
 557         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 558         info->count = 2;
 559         info->value.integer.min = 0;
 560         info->value.integer.max = 0x3f;
 561
 562         return 0;
 563 }
 564
 565 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
 566                                struct snd_ctl_elem_value *value)
 567 {
 568         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 569         struct cx88_core *core=chip->core;
 570         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
 571             bal = cx_read(AUD_BAL_CTL);
 572
 573         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
 574         vol -= (bal & 0x3f);
 575         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
 576
 577         return 0;
 578 }
 579
 580 /* OK - TODO: test it */
 581 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
 582                                struct snd_ctl_elem_value *value)
 583 {
 584         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 585         struct cx88_core *core=chip->core;
 586         int v, b;
 587         int changed = 0;
 588         u32 old;
 589
 590         b = value->value.integer.value[1] - value->value.integer.value[0];
 591         if (b < 0) {
 592             v = 0x3f - value->value.integer.value[0];
 593             b = (-b) | 0x40;
 594         } else {
 595             v = 0x3f - value->value.integer.value[1];
 596         }
 597         /* Do we really know this will always be called with IRQs on? */
 598         spin_lock_irq(&chip->reg_lock);
 599         old = cx_read(AUD_VOL_CTL);
 600         if (v != (old & 0x3f)) {
 601             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
 602             changed = 1;
 603         }
 604         if (cx_read(AUD_BAL_CTL) != b) {
 605             cx_write(AUD_BAL_CTL, b);
 606             changed = 1;
 607         }
 608         spin_unlock_irq(&chip->reg_lock);
 609
 610         return changed;
 611 }
 612
 613 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
 614
 615 static struct snd_kcontrol_new snd_cx88_volume = {
 616         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 617         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
 618                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
 619         .name = "Playback Volume",
 620         .info = snd_cx88_volume_info,
 621         .get = snd_cx88_volume_get,
 622         .put = snd_cx88_volume_put,
 623         .tlv.p = snd_cx88_db_scale,
 624 };
 625
 626 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
 627                                struct snd_ctl_elem_value *value)
 628 {
 629         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 630         struct cx88_core *core = chip->core;
 631         u32 bit = kcontrol->private_value;
 632
 633         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
 634         return 0;
 635 }
 636
 637 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
 638                                        struct snd_ctl_elem_value *value)
 639 {
 640         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 641         struct cx88_core *core = chip->core;
 642         u32 bit = kcontrol->private_value;
 643         int ret = 0;
 644         u32 vol;
 645
 646         spin_lock_irq(&chip->reg_lock);
 647         vol = cx_read(AUD_VOL_CTL);
 648         if (value->value.integer.value[0] != !(vol & bit)) {
 649                 vol ^= bit;
 650                 cx_write(AUD_VOL_CTL, vol);
 651                 ret = 1;
 652         }
 653         spin_unlock_irq(&chip->reg_lock);
 654         return ret;
 655 }
 656
 657 static struct snd_kcontrol_new snd_cx88_dac_switch = {
 658         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 659         .name = "Playback Switch",
 660         .info = snd_ctl_boolean_mono_info,
 661         .get = snd_cx88_switch_get,
 662         .put = snd_cx88_switch_put,
 663         .private_value = (1<<8),
 664 };
 665
 666 static struct snd_kcontrol_new snd_cx88_source_switch = {
 667         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 668         .name = "Capture Switch",
 669         .info = snd_ctl_boolean_mono_info,
 670         .get = snd_cx88_switch_get,
 671         .put = snd_cx88_switch_put,
 672         .private_value = (1<<6),
 673 };
 674
 675 /****************************************************************************
 676                         Basic Flow for Sound Devices
 677  ****************************************************************************/
 678
 679 /*
 680  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 681  * Only boards with eeprom and byte 1 at eeprom=1 have it
 682  */
 683
 684 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
 685         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 686         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 687         {0, }
 688 };
 689 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 690
 691 /*
 692  * Chip-specific destructor
 693  */
 694
 695 static int snd_cx88_free(snd_cx88_card_t *chip)
 696 {
 697
 698         if (chip->irq >= 0)
 699                 free_irq(chip->irq, chip);
 700
 701         cx88_core_put(chip->core,chip->pci);
 702
 703         pci_disable_device(chip->pci);
 704         return 0;
 705 }
 706
 707 /*
 708  * Component Destructor
 709  */
 710 static void snd_cx88_dev_free(struct snd_card * card)
 711 {
 712         snd_cx88_card_t *chip = card->private_data;
 713
 714         snd_cx88_free(chip);
 715 }
 716
 717
 718 /*
 719  * Alsa Constructor - Component probe
 720  */
 721
 722 static int devno;
 723 static int __devinit snd_cx88_create(struct snd_card *card,
 724                                      struct pci_dev *pci,
 725                                      snd_cx88_card_t **rchip)
 726 {
 727         snd_cx88_card_t   *chip;
 728         struct cx88_core  *core;
 729         int               err;
 730         unsigned char     pci_lat;
 731
 732         *rchip = NULL;
 733
 734         err = pci_enable_device(pci);
 735         if (err < 0)
 736                 return err;
 737
 738         pci_set_master(pci);
 739
 740         chip = (snd_cx88_card_t *) card->private_data;
 741
 742         core = cx88_core_get(pci);
 743         if (NULL == core) {
 744                 err = -EINVAL;
 745                 kfree (chip);
 746                 return err;
 747         }
 748
 749         if (!pci_dma_supported(pci,DMA_32BIT_MASK)) {
 750                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 751                 err = -EIO;
 752                 cx88_core_put(core,pci);
 753                 return err;
 754         }
 755
 756
 757         /* pci init */
 758         chip->card = card;
 759         chip->pci = pci;
 760         chip->irq = -1;
 761         spin_lock_init(&chip->reg_lock);
 762
 763         chip->core = core;
 764
 765         /* get irq */
 766         err = request_irq(chip->pci->irq, cx8801_irq,
 767                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 768         if (err < 0) {
 769                 dprintk(0, "%s: can't get IRQ %d\n",
 770                        chip->core->name, chip->pci->irq);
 771                 return err;
 772         }
 773
 774         /* print pci info */
 775         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 776
 777         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 778                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 779                pci_name(pci), pci->revision, pci->irq,
 780                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 781
 782         chip->irq = pci->irq;
 783         synchronize_irq(chip->irq);
 784
 785         snd_card_set_dev(card, &pci->dev);
 786
 787         *rchip = chip;
 788
 789         return 0;
 790 }
 791
 792 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 793                                     const struct pci_device_id *pci_id)
 794 {
 795         struct snd_card  *card;
 796         snd_cx88_card_t  *chip;
 797         int              err;
 798
 799         if (devno >= SNDRV_CARDS)
 800                 return (-ENODEV);
 801
 802         if (!enable[devno]) {
 803                 ++devno;
 804                 return (-ENOENT);
 805         }
 806
 807         card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t));
 808         if (!card)
 809                 return (-ENOMEM);
 810
 811         card->private_free = snd_cx88_dev_free;
 812
 813         err = snd_cx88_create(card, pci, &chip);
 814         if (err < 0)
 815                 return (err);
 816
 817         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 818         if (err < 0)
 819                 goto error;
 820
 821         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
 822         if (err < 0)
 823                 goto error;
 824         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
 825         if (err < 0)
 826                 goto error;
 827         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
 828         if (err < 0)
 829                 goto error;
 830
 831         strcpy (card->driver, "CX88x");
 832         sprintf(card->shortname, "Conexant CX%x", pci->device);
 833         sprintf(card->longname, "%s at %#llx",
 834                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 835         strcpy (card->mixername, "CX88");
 836
 837         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 838                card->driver,devno);
 839
 840         err = snd_card_register(card);
 841         if (err < 0)
 842                 goto error;
 843         pci_set_drvdata(pci,card);
 844
 845         devno++;
 846         return 0;
 847
 848 error:
 849         snd_card_free(card);
 850         return err;
 851 }
 852 /*
 853  * ALSA destructor
 854  */
 855 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 856 {
 857         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 858
 859         snd_card_free((void *)card);
 860
 861         pci_set_drvdata(pci, NULL);
 862
 863         devno--;
 864 }
 865
 866 /*
 867  * PCI driver definition
 868  */
 869
 870 static struct pci_driver cx88_audio_pci_driver = {
 871         .name     = "cx88_audio",
 872         .id_table = cx88_audio_pci_tbl,
 873         .probe    = cx88_audio_initdev,
 874         .remove   = cx88_audio_finidev,
 875 };
 876
 877 /****************************************************************************
 878                                 LINUX MODULE INIT
 879  ****************************************************************************/
 880
 881 /*
 882  * module init
 883  */
 884 static int cx88_audio_init(void)
 885 {
 886         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 887                (CX88_VERSION_CODE >> 16) & 0xff,
 888                (CX88_VERSION_CODE >>  8) & 0xff,
 889                CX88_VERSION_CODE & 0xff);
 890 #ifdef SNAPSHOT
 891         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 892                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 893 #endif
 894         return pci_register_driver(&cx88_audio_pci_driver);
 895 }
 896
 897 /*
 898  * module remove
 899  */
 900 static void cx88_audio_fini(void)
 901 {
 902
 903         pci_unregister_driver(&cx88_audio_pci_driver);
 904 }
 905
 906 module_init(cx88_audio_init);
 907 module_exit(cx88_audio_fini);
 908
 909 /* ----------------------------------------------------------- */
 910 /*
 911  * Local variables:
 912  * c-basic-offset: 8
 913  * End:
 914  */