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 #include <linux/slab.h>
  35
  36 #include <asm/delay.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 #include <sound/tlv.h>
  43
  44 #include "cx88.h"
  45 #include "cx88-reg.h"
  46
  47 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  48         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
  49
  50 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
  51         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
  52
  53 /****************************************************************************
  54         Data type declarations - Can be moded to a header file later
  55  ****************************************************************************/
  56
  57 struct cx88_audio_dev {
  58         struct cx88_core           *core;
  59         struct cx88_dmaqueue       q;
  60
  61         /* pci i/o */
  62         struct pci_dev             *pci;
  63
  64         /* audio controls */
  65         int                        irq;
  66
  67         struct snd_card            *card;
  68
  69         spinlock_t                 reg_lock;
  70         atomic_t                   count;
  71
  72         unsigned int               dma_size;
  73         unsigned int               period_size;
  74         unsigned int               num_periods;
  75
  76         struct videobuf_dmabuf     *dma_risc;
  77
  78         struct cx88_buffer         *buf;
  79
  80         struct snd_pcm_substream   *substream;
  81 };
  82 typedef struct cx88_audio_dev snd_cx88_card_t;
  83
  84
  85
  86 /****************************************************************************
  87                         Module global static vars
  88  ****************************************************************************/
  89
  90 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  91 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  92 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
  93
  94 module_param_array(enable, bool, NULL, 0444);
  95 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
  96
  97 module_param_array(index, int, NULL, 0444);
  98 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
  99
 100
 101 /****************************************************************************
 102                                 Module macros
 103  ****************************************************************************/
 104
 105 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 106 MODULE_AUTHOR("Ricardo Cerqueira");
 107 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 108 MODULE_LICENSE("GPL");
 109 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 110                         "{{Conexant,23882},"
 111                         "{{Conexant,23883}");
 112 static unsigned int debug;
 113 module_param(debug,int,0644);
 114 MODULE_PARM_DESC(debug,"enable debug messages");
 115
 116 /****************************************************************************
 117                         Module specific funtions
 118  ****************************************************************************/
 119
 120 /*
 121  * BOARD Specific: Sets audio DMA
 122  */
 123
 124 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 125 {
 126         struct cx88_buffer   *buf = chip->buf;
 127         struct cx88_core *core=chip->core;
 128         struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 129
 130         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 131         cx_clear(MO_AUD_DMACNTRL, 0x11);
 132
 133         /* setup fifo + format - out channel */
 134         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 135
 136         /* sets bpl size */
 137         cx_write(MO_AUDD_LNGTH, buf->bpl);
 138
 139         /* reset counter */
 140         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 141         atomic_set(&chip->count, 0);
 142
 143         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 144                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 145                 chip->num_periods, buf->bpl * chip->num_periods);
 146
 147         /* Enables corresponding bits at AUD_INT_STAT */
 148         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 149                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 150
 151         /* Clean any pending interrupt bits already set */
 152         cx_write(MO_AUD_INTSTAT, ~0);
 153
 154         /* enable audio irqs */
 155         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 156
 157         /* start dma */
 158         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 159         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 160
 161         if (debug)
 162                 cx88_sram_channel_dump(chip->core, audio_ch);
 163
 164         return 0;
 165 }
 166
 167 /*
 168  * BOARD Specific: Resets audio DMA
 169  */
 170 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 171 {
 172         struct cx88_core *core=chip->core;
 173         dprintk(1, "Stopping audio DMA\n");
 174
 175         /* stop dma */
 176         cx_clear(MO_AUD_DMACNTRL, 0x11);
 177
 178         /* disable irqs */
 179         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 180         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 181                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 182
 183         if (debug)
 184                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 185
 186         return 0;
 187 }
 188
 189 #define MAX_IRQ_LOOP 50
 190
 191 /*
 192  * BOARD Specific: IRQ dma bits
 193  */
 194 static char *cx88_aud_irqs[32] = {
 195         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 196         NULL,                                     /* reserved */
 197         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 198         NULL,                                     /* reserved */
 199         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 200         NULL,                                     /* reserved */
 201         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 202         NULL,                                     /* reserved */
 203         "opc_err", "par_err", "rip_err",          /* 16-18 */
 204         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 205 };
 206
 207 /*
 208  * BOARD Specific: Threats IRQ audio specific calls
 209  */
 210 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 211 {
 212         struct cx88_core *core = chip->core;
 213         u32 status, mask;
 214
 215         status = cx_read(MO_AUD_INTSTAT);
 216         mask   = cx_read(MO_AUD_INTMSK);
 217         if (0 == (status & mask))
 218                 return;
 219         cx_write(MO_AUD_INTSTAT, status);
 220         if (debug > 1  ||  (status & mask & ~0xff))
 221                 cx88_print_irqbits(core->name, "irq aud",
 222                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 223                                    status, mask);
 224         /* risc op code error */
 225         if (status & AUD_INT_OPC_ERR) {
 226                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 227                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 228                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 229         }
 230         if (status & AUD_INT_DN_SYNC) {
 231                 dprintk(1, "Downstream sync error\n");
 232                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 233                 return;
 234         }
 235         /* risc1 downstream */
 236         if (status & AUD_INT_DN_RISCI1) {
 237                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 238                 snd_pcm_period_elapsed(chip->substream);
 239         }
 240         /* FIXME: Any other status should deserve a special handling? */
 241 }
 242
 243 /*
 244  * BOARD Specific: Handles IRQ calls
 245  */
 246 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 247 {
 248         snd_cx88_card_t *chip = dev_id;
 249         struct cx88_core *core = chip->core;
 250         u32 status;
 251         int loop, handled = 0;
 252
 253         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 254                 status = cx_read(MO_PCI_INTSTAT) &
 255                         (core->pci_irqmask | PCI_INT_AUDINT);
 256                 if (0 == status)
 257                         goto out;
 258                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 259                         loop, MAX_IRQ_LOOP, status);
 260                 handled = 1;
 261                 cx_write(MO_PCI_INTSTAT, status);
 262
 263                 if (status & core->pci_irqmask)
 264                         cx88_core_irq(core, status);
 265                 if (status & PCI_INT_AUDINT)
 266                         cx8801_aud_irq(chip);
 267         }
 268
 269         if (MAX_IRQ_LOOP == loop) {
 270                 printk(KERN_ERR
 271                        "%s/1: IRQ loop detected, disabling interrupts\n",
 272                        core->name);
 273                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 274         }
 275
 276  out:
 277         return IRQ_RETVAL(handled);
 278 }
 279
 280
 281 static int dsp_buffer_free(snd_cx88_card_t *chip)
 282 {
 283         BUG_ON(!chip->dma_size);
 284
 285         dprintk(2,"Freeing buffer\n");
 286         videobuf_sg_dma_unmap(&chip->pci->dev, chip->dma_risc);
 287         videobuf_dma_free(chip->dma_risc);
 288         btcx_riscmem_free(chip->pci,&chip->buf->risc);
 289         kfree(chip->buf);
 290
 291         chip->dma_risc = NULL;
 292         chip->dma_size = 0;
 293
 294         return 0;
 295 }
 296
 297 /****************************************************************************
 298                                 ALSA PCM Interface
 299  ****************************************************************************/
 300
 301 /*
 302  * Digital hardware definition
 303  */
 304 #define DEFAULT_FIFO_SIZE       4096
 305 static struct snd_pcm_hardware snd_cx88_digital_hw = {
 306         .info = SNDRV_PCM_INFO_MMAP |
 307                 SNDRV_PCM_INFO_INTERLEAVED |
 308                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 309                 SNDRV_PCM_INFO_MMAP_VALID,
 310         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 311
 312         .rates =                SNDRV_PCM_RATE_48000,
 313         .rate_min =             48000,
 314         .rate_max =             48000,
 315         .channels_min = 2,
 316         .channels_max = 2,
 317         /* Analog audio output will be full of clicks and pops if there
 318            are not exactly four lines in the SRAM FIFO buffer.  */
 319         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 320         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 321         .periods_min = 1,
 322         .periods_max = 1024,
 323         .buffer_bytes_max = (1024*1024),
 324 };
 325
 326 /*
 327  * audio pcm capture open callback
 328  */
 329 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 330 {
 331         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 332         struct snd_pcm_runtime *runtime = substream->runtime;
 333         int err;
 334
 335         if (!chip) {
 336                 printk(KERN_ERR "BUG: cx88 can't find device struct."
 337                                 " Can't proceed with open\n");
 338                 return -ENODEV;
 339         }
 340
 341         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 342         if (err < 0)
 343                 goto _error;
 344
 345         chip->substream = substream;
 346
 347         runtime->hw = snd_cx88_digital_hw;
 348
 349         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 350                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 351                 bpl &= ~7; /* must be multiple of 8 */
 352                 runtime->hw.period_bytes_min = bpl;
 353                 runtime->hw.period_bytes_max = bpl;
 354         }
 355
 356         return 0;
 357 _error:
 358         dprintk(1,"Error opening PCM!\n");
 359         return err;
 360 }
 361
 362 /*
 363  * audio close callback
 364  */
 365 static int snd_cx88_close(struct snd_pcm_substream *substream)
 366 {
 367         return 0;
 368 }
 369
 370 /*
 371  * hw_params callback
 372  */
 373 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 374                               struct snd_pcm_hw_params * hw_params)
 375 {
 376         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 377         struct videobuf_dmabuf *dma;
 378
 379         struct cx88_buffer *buf;
 380         int ret;
 381
 382         if (substream->runtime->dma_area) {
 383                 dsp_buffer_free(chip);
 384                 substream->runtime->dma_area = NULL;
 385         }
 386
 387         chip->period_size = params_period_bytes(hw_params);
 388         chip->num_periods = params_periods(hw_params);
 389         chip->dma_size = chip->period_size * params_periods(hw_params);
 390
 391         BUG_ON(!chip->dma_size);
 392         BUG_ON(chip->num_periods & (chip->num_periods-1));
 393
 394         buf = videobuf_sg_alloc(sizeof(*buf));
 395         if (NULL == buf)
 396                 return -ENOMEM;
 397
 398         buf->vb.memory = V4L2_MEMORY_MMAP;
 399         buf->vb.field  = V4L2_FIELD_NONE;
 400         buf->vb.width  = chip->period_size;
 401         buf->bpl       = chip->period_size;
 402         buf->vb.height = chip->num_periods;
 403         buf->vb.size   = chip->dma_size;
 404
 405         dma = videobuf_to_dma(&buf->vb);
 406         videobuf_dma_init(dma);
 407         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
 408                         (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT));
 409         if (ret < 0)
 410                 goto error;
 411
 412         ret = videobuf_sg_dma_map(&chip->pci->dev, dma);
 413         if (ret < 0)
 414                 goto error;
 415
 416         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
 417                                    buf->vb.width, buf->vb.height, 1);
 418         if (ret < 0)
 419                 goto error;
 420
 421         /* Loop back to start of program */
 422         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 423         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 424
 425         buf->vb.state = VIDEOBUF_PREPARED;
 426
 427         chip->buf = buf;
 428         chip->dma_risc = dma;
 429
 430         substream->runtime->dma_area = chip->dma_risc->vmalloc;
 431         substream->runtime->dma_bytes = chip->dma_size;
 432         substream->runtime->dma_addr = 0;
 433         return 0;
 434
 435 error:
 436         kfree(buf);
 437         return ret;
 438 }
 439
 440 /*
 441  * hw free callback
 442  */
 443 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 444 {
 445
 446         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 447
 448         if (substream->runtime->dma_area) {
 449                 dsp_buffer_free(chip);
 450                 substream->runtime->dma_area = NULL;
 451         }
 452
 453         return 0;
 454 }
 455
 456 /*
 457  * prepare callback
 458  */
 459 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 460 {
 461         return 0;
 462 }
 463
 464 /*
 465  * trigger callback
 466  */
 467 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 468 {
 469         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 470         int err;
 471
 472         /* Local interrupts are already disabled by ALSA */
 473         spin_lock(&chip->reg_lock);
 474
 475         switch (cmd) {
 476         case SNDRV_PCM_TRIGGER_START:
 477                 err=_cx88_start_audio_dma(chip);
 478                 break;
 479         case SNDRV_PCM_TRIGGER_STOP:
 480                 err=_cx88_stop_audio_dma(chip);
 481                 break;
 482         default:
 483                 err=-EINVAL;
 484                 break;
 485         }
 486
 487         spin_unlock(&chip->reg_lock);
 488
 489         return err;
 490 }
 491
 492 /*
 493  * pointer callback
 494  */
 495 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 496 {
 497         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 498         struct snd_pcm_runtime *runtime = substream->runtime;
 499         u16 count;
 500
 501         count = atomic_read(&chip->count);
 502
 503 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
 504 //              count, new, count & (runtime->periods-1),
 505 //              runtime->period_size * (count & (runtime->periods-1)));
 506         return runtime->period_size * (count & (runtime->periods-1));
 507 }
 508
 509 /*
 510  * page callback (needed for mmap)
 511  */
 512 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
 513                                 unsigned long offset)
 514 {
 515         void *pageptr = substream->runtime->dma_area + offset;
 516         return vmalloc_to_page(pageptr);
 517 }
 518
 519 /*
 520  * operators
 521  */
 522 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 523         .open = snd_cx88_pcm_open,
 524         .close = snd_cx88_close,
 525         .ioctl = snd_pcm_lib_ioctl,
 526         .hw_params = snd_cx88_hw_params,
 527         .hw_free = snd_cx88_hw_free,
 528         .prepare = snd_cx88_prepare,
 529         .trigger = snd_cx88_card_trigger,
 530         .pointer = snd_cx88_pointer,
 531         .page = snd_cx88_page,
 532 };
 533
 534 /*
 535  * create a PCM device
 536  */
 537 static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name)
 538 {
 539         int err;
 540         struct snd_pcm *pcm;
 541
 542         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 543         if (err < 0)
 544                 return err;
 545         pcm->private_data = chip;
 546         strcpy(pcm->name, name);
 547         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 548
 549         return 0;
 550 }
 551
 552 /****************************************************************************
 553                                 CONTROL INTERFACE
 554  ****************************************************************************/
 555 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
 556                                 struct snd_ctl_elem_info *info)
 557 {
 558         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 559         info->count = 2;
 560         info->value.integer.min = 0;
 561         info->value.integer.max = 0x3f;
 562
 563         return 0;
 564 }
 565
 566 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
 567                                struct snd_ctl_elem_value *value)
 568 {
 569         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 570         struct cx88_core *core=chip->core;
 571         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
 572             bal = cx_read(AUD_BAL_CTL);
 573
 574         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
 575         vol -= (bal & 0x3f);
 576         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
 577
 578         return 0;
 579 }
 580
 581 /* OK - TODO: test it */
 582 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
 583                                struct snd_ctl_elem_value *value)
 584 {
 585         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 586         struct cx88_core *core=chip->core;
 587         int left, right, v, b;
 588         int changed = 0;
 589         u32 old;
 590
 591         left = value->value.integer.value[0] & 0x3f;
 592         right = value->value.integer.value[1] & 0x3f;
 593         b = right - left;
 594         if (b < 0) {
 595             v = 0x3f - left;
 596             b = (-b) | 0x40;
 597         } else {
 598             v = 0x3f - right;
 599         }
 600         /* Do we really know this will always be called with IRQs on? */
 601         spin_lock_irq(&chip->reg_lock);
 602         old = cx_read(AUD_VOL_CTL);
 603         if (v != (old & 0x3f)) {
 604             cx_write(AUD_VOL_CTL, (old & ~0x3f) | v);
 605             changed = 1;
 606         }
 607         if (cx_read(AUD_BAL_CTL) != b) {
 608             cx_write(AUD_BAL_CTL, b);
 609             changed = 1;
 610         }
 611         spin_unlock_irq(&chip->reg_lock);
 612
 613         return changed;
 614 }
 615
 616 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
 617
 618 static struct snd_kcontrol_new snd_cx88_volume = {
 619         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 620         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
 621                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
 622         .name = "Playback Volume",
 623         .info = snd_cx88_volume_info,
 624         .get = snd_cx88_volume_get,
 625         .put = snd_cx88_volume_put,
 626         .tlv.p = snd_cx88_db_scale,
 627 };
 628
 629 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
 630                                struct snd_ctl_elem_value *value)
 631 {
 632         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 633         struct cx88_core *core = chip->core;
 634         u32 bit = kcontrol->private_value;
 635
 636         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
 637         return 0;
 638 }
 639
 640 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
 641                                        struct snd_ctl_elem_value *value)
 642 {
 643         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 644         struct cx88_core *core = chip->core;
 645         u32 bit = kcontrol->private_value;
 646         int ret = 0;
 647         u32 vol;
 648
 649         spin_lock_irq(&chip->reg_lock);
 650         vol = cx_read(AUD_VOL_CTL);
 651         if (value->value.integer.value[0] != !(vol & bit)) {
 652                 vol ^= bit;
 653                 cx_write(AUD_VOL_CTL, vol);
 654                 ret = 1;
 655         }
 656         spin_unlock_irq(&chip->reg_lock);
 657         return ret;
 658 }
 659
 660 static struct snd_kcontrol_new snd_cx88_dac_switch = {
 661         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 662         .name = "Playback Switch",
 663         .info = snd_ctl_boolean_mono_info,
 664         .get = snd_cx88_switch_get,
 665         .put = snd_cx88_switch_put,
 666         .private_value = (1<<8),
 667 };
 668
 669 static struct snd_kcontrol_new snd_cx88_source_switch = {
 670         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 671         .name = "Capture Switch",
 672         .info = snd_ctl_boolean_mono_info,
 673         .get = snd_cx88_switch_get,
 674         .put = snd_cx88_switch_put,
 675         .private_value = (1<<6),
 676 };
 677
 678 /****************************************************************************
 679                         Basic Flow for Sound Devices
 680  ****************************************************************************/
 681
 682 /*
 683  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 684  * Only boards with eeprom and byte 1 at eeprom=1 have it
 685  */
 686
 687 static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = {
 688         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 689         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 690         {0, }
 691 };
 692 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 693
 694 /*
 695  * Chip-specific destructor
 696  */
 697
 698 static int snd_cx88_free(snd_cx88_card_t *chip)
 699 {
 700
 701         if (chip->irq >= 0)
 702                 free_irq(chip->irq, chip);
 703
 704         cx88_core_put(chip->core,chip->pci);
 705
 706         pci_disable_device(chip->pci);
 707         return 0;
 708 }
 709
 710 /*
 711  * Component Destructor
 712  */
 713 static void snd_cx88_dev_free(struct snd_card * card)
 714 {
 715         snd_cx88_card_t *chip = card->private_data;
 716
 717         snd_cx88_free(chip);
 718 }
 719
 720
 721 /*
 722  * Alsa Constructor - Component probe
 723  */
 724
 725 static int devno;
 726 static int __devinit snd_cx88_create(struct snd_card *card,
 727                                      struct pci_dev *pci,
 728                                      snd_cx88_card_t **rchip)
 729 {
 730         snd_cx88_card_t   *chip;
 731         struct cx88_core  *core;
 732         int               err;
 733         unsigned char     pci_lat;
 734
 735         *rchip = NULL;
 736
 737         err = pci_enable_device(pci);
 738         if (err < 0)
 739                 return err;
 740
 741         pci_set_master(pci);
 742
 743         chip = (snd_cx88_card_t *) card->private_data;
 744
 745         core = cx88_core_get(pci);
 746         if (NULL == core) {
 747                 err = -EINVAL;
 748                 return err;
 749         }
 750
 751         if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
 752                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 753                 err = -EIO;
 754                 cx88_core_put(core,pci);
 755                 return err;
 756         }
 757
 758
 759         /* pci init */
 760         chip->card = card;
 761         chip->pci = pci;
 762         chip->irq = -1;
 763         spin_lock_init(&chip->reg_lock);
 764
 765         chip->core = core;
 766
 767         /* get irq */
 768         err = request_irq(chip->pci->irq, cx8801_irq,
 769                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 770         if (err < 0) {
 771                 dprintk(0, "%s: can't get IRQ %d\n",
 772                        chip->core->name, chip->pci->irq);
 773                 return err;
 774         }
 775
 776         /* print pci info */
 777         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 778
 779         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 780                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 781                pci_name(pci), pci->revision, pci->irq,
 782                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 783
 784         chip->irq = pci->irq;
 785         synchronize_irq(chip->irq);
 786
 787         snd_card_set_dev(card, &pci->dev);
 788
 789         *rchip = chip;
 790
 791         return 0;
 792 }
 793
 794 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 795                                     const struct pci_device_id *pci_id)
 796 {
 797         struct snd_card  *card;
 798         snd_cx88_card_t  *chip;
 799         int              err;
 800
 801         if (devno >= SNDRV_CARDS)
 802                 return (-ENODEV);
 803
 804         if (!enable[devno]) {
 805                 ++devno;
 806                 return (-ENOENT);
 807         }
 808
 809         err = snd_card_create(index[devno], id[devno], THIS_MODULE,
 810                               sizeof(snd_cx88_card_t), &card);
 811         if (err < 0)
 812                 return err;
 813
 814         card->private_free = snd_cx88_dev_free;
 815
 816         err = snd_cx88_create(card, pci, &chip);
 817         if (err < 0)
 818                 goto error;
 819
 820         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 821         if (err < 0)
 822                 goto error;
 823
 824         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
 825         if (err < 0)
 826                 goto error;
 827         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
 828         if (err < 0)
 829                 goto error;
 830         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
 831         if (err < 0)
 832                 goto error;
 833
 834         strcpy (card->driver, "CX88x");
 835         sprintf(card->shortname, "Conexant CX%x", pci->device);
 836         sprintf(card->longname, "%s at %#llx",
 837                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 838         strcpy (card->mixername, "CX88");
 839
 840         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 841                card->driver,devno);
 842
 843         err = snd_card_register(card);
 844         if (err < 0)
 845                 goto error;
 846         pci_set_drvdata(pci,card);
 847
 848         devno++;
 849         return 0;
 850
 851 error:
 852         snd_card_free(card);
 853         return err;
 854 }
 855 /*
 856  * ALSA destructor
 857  */
 858 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 859 {
 860         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 861
 862         snd_card_free((void *)card);
 863
 864         pci_set_drvdata(pci, NULL);
 865
 866         devno--;
 867 }
 868
 869 /*
 870  * PCI driver definition
 871  */
 872
 873 static struct pci_driver cx88_audio_pci_driver = {
 874         .name     = "cx88_audio",
 875         .id_table = cx88_audio_pci_tbl,
 876         .probe    = cx88_audio_initdev,
 877         .remove   = __devexit_p(cx88_audio_finidev),
 878 };
 879
 880 /****************************************************************************
 881                                 LINUX MODULE INIT
 882  ****************************************************************************/
 883
 884 /*
 885  * module init
 886  */
 887 static int __init cx88_audio_init(void)
 888 {
 889         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 890                (CX88_VERSION_CODE >> 16) & 0xff,
 891                (CX88_VERSION_CODE >>  8) & 0xff,
 892                CX88_VERSION_CODE & 0xff);
 893 #ifdef SNAPSHOT
 894         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 895                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 896 #endif
 897         return pci_register_driver(&cx88_audio_pci_driver);
 898 }
 899
 900 /*
 901  * module remove
 902  */
 903 static void __exit cx88_audio_fini(void)
 904 {
 905         pci_unregister_driver(&cx88_audio_pci_driver);
 906 }
 907
 908 module_init(cx88_audio_init);
 909 module_exit(cx88_audio_fini);
 910
 911 /* ----------------------------------------------------------- */
 912 /*
 913  * Local variables:
 914  * c-basic-offset: 8
 915  * End:
 916  */