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 #include <media/wm8775.h>
  44
  45 #include "cx88.h"
  46 #include "cx88-reg.h"
  47
  48 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  49         printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg)
  50
  51 #define dprintk_core(level,fmt, arg...) if (debug >= level) \
  52         printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg)
  53
  54 /****************************************************************************
  55         Data type declarations - Can be moded to a header file later
  56  ****************************************************************************/
  57
  58 struct cx88_audio_buffer {
  59         unsigned int               bpl;
  60         struct btcx_riscmem        risc;
  61         struct videobuf_dmabuf     dma;
  62 };
  63
  64 struct cx88_audio_dev {
  65         struct cx88_core           *core;
  66         struct cx88_dmaqueue       q;
  67
  68         /* pci i/o */
  69         struct pci_dev             *pci;
  70
  71         /* audio controls */
  72         int                        irq;
  73
  74         struct snd_card            *card;
  75
  76         spinlock_t                 reg_lock;
  77         atomic_t                   count;
  78
  79         unsigned int               dma_size;
  80         unsigned int               period_size;
  81         unsigned int               num_periods;
  82
  83         struct videobuf_dmabuf     *dma_risc;
  84
  85         struct cx88_audio_buffer   *buf;
  86
  87         struct snd_pcm_substream   *substream;
  88 };
  89 typedef struct cx88_audio_dev snd_cx88_card_t;
  90
  91
  92
  93 /****************************************************************************
  94                         Module global static vars
  95  ****************************************************************************/
  96
  97 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  98 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
  99 static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
 100
 101 module_param_array(enable, bool, NULL, 0444);
 102 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
 103
 104 module_param_array(index, int, NULL, 0444);
 105 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
 106
 107
 108 /****************************************************************************
 109                                 Module macros
 110  ****************************************************************************/
 111
 112 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 113 MODULE_AUTHOR("Ricardo Cerqueira");
 114 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 115 MODULE_LICENSE("GPL");
 116 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 117                         "{{Conexant,23882},"
 118                         "{{Conexant,23883}");
 119 static unsigned int debug;
 120 module_param(debug,int,0644);
 121 MODULE_PARM_DESC(debug,"enable debug messages");
 122
 123 /****************************************************************************
 124                         Module specific funtions
 125  ****************************************************************************/
 126
 127 /*
 128  * BOARD Specific: Sets audio DMA
 129  */
 130
 131 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 132 {
 133         struct cx88_audio_buffer *buf = chip->buf;
 134         struct cx88_core *core=chip->core;
 135         const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 136
 137         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 138         cx_clear(MO_AUD_DMACNTRL, 0x11);
 139
 140         /* setup fifo + format - out channel */
 141         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 142
 143         /* sets bpl size */
 144         cx_write(MO_AUDD_LNGTH, buf->bpl);
 145
 146         /* reset counter */
 147         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 148         atomic_set(&chip->count, 0);
 149
 150         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 151                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 152                 chip->num_periods, buf->bpl * chip->num_periods);
 153
 154         /* Enables corresponding bits at AUD_INT_STAT */
 155         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 156                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 157
 158         /* Clean any pending interrupt bits already set */
 159         cx_write(MO_AUD_INTSTAT, ~0);
 160
 161         /* enable audio irqs */
 162         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 163
 164         /* start dma */
 165         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 166         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 167
 168         if (debug)
 169                 cx88_sram_channel_dump(chip->core, audio_ch);
 170
 171         return 0;
 172 }
 173
 174 /*
 175  * BOARD Specific: Resets audio DMA
 176  */
 177 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 178 {
 179         struct cx88_core *core=chip->core;
 180         dprintk(1, "Stopping audio DMA\n");
 181
 182         /* stop dma */
 183         cx_clear(MO_AUD_DMACNTRL, 0x11);
 184
 185         /* disable irqs */
 186         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 187         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 188                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 189
 190         if (debug)
 191                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 192
 193         return 0;
 194 }
 195
 196 #define MAX_IRQ_LOOP 50
 197
 198 /*
 199  * BOARD Specific: IRQ dma bits
 200  */
 201 static const char *cx88_aud_irqs[32] = {
 202         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 203         NULL,                                     /* reserved */
 204         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 205         NULL,                                     /* reserved */
 206         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 207         NULL,                                     /* reserved */
 208         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 209         NULL,                                     /* reserved */
 210         "opc_err", "par_err", "rip_err",          /* 16-18 */
 211         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 212 };
 213
 214 /*
 215  * BOARD Specific: Threats IRQ audio specific calls
 216  */
 217 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 218 {
 219         struct cx88_core *core = chip->core;
 220         u32 status, mask;
 221
 222         status = cx_read(MO_AUD_INTSTAT);
 223         mask   = cx_read(MO_AUD_INTMSK);
 224         if (0 == (status & mask))
 225                 return;
 226         cx_write(MO_AUD_INTSTAT, status);
 227         if (debug > 1  ||  (status & mask & ~0xff))
 228                 cx88_print_irqbits(core->name, "irq aud",
 229                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 230                                    status, mask);
 231         /* risc op code error */
 232         if (status & AUD_INT_OPC_ERR) {
 233                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 234                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 235                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 236         }
 237         if (status & AUD_INT_DN_SYNC) {
 238                 dprintk(1, "Downstream sync error\n");
 239                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 240                 return;
 241         }
 242         /* risc1 downstream */
 243         if (status & AUD_INT_DN_RISCI1) {
 244                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 245                 snd_pcm_period_elapsed(chip->substream);
 246         }
 247         /* FIXME: Any other status should deserve a special handling? */
 248 }
 249
 250 /*
 251  * BOARD Specific: Handles IRQ calls
 252  */
 253 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 254 {
 255         snd_cx88_card_t *chip = dev_id;
 256         struct cx88_core *core = chip->core;
 257         u32 status;
 258         int loop, handled = 0;
 259
 260         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 261                 status = cx_read(MO_PCI_INTSTAT) &
 262                         (core->pci_irqmask | PCI_INT_AUDINT);
 263                 if (0 == status)
 264                         goto out;
 265                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 266                         loop, MAX_IRQ_LOOP, status);
 267                 handled = 1;
 268                 cx_write(MO_PCI_INTSTAT, status);
 269
 270                 if (status & core->pci_irqmask)
 271                         cx88_core_irq(core, status);
 272                 if (status & PCI_INT_AUDINT)
 273                         cx8801_aud_irq(chip);
 274         }
 275
 276         if (MAX_IRQ_LOOP == loop) {
 277                 printk(KERN_ERR
 278                        "%s/1: IRQ loop detected, disabling interrupts\n",
 279                        core->name);
 280                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 281         }
 282
 283  out:
 284         return IRQ_RETVAL(handled);
 285 }
 286
 287
 288 static int dsp_buffer_free(snd_cx88_card_t *chip)
 289 {
 290         BUG_ON(!chip->dma_size);
 291
 292         dprintk(2,"Freeing buffer\n");
 293         videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
 294         videobuf_dma_free(chip->dma_risc);
 295         btcx_riscmem_free(chip->pci,&chip->buf->risc);
 296         kfree(chip->buf);
 297
 298         chip->dma_risc = NULL;
 299         chip->dma_size = 0;
 300
 301         return 0;
 302 }
 303
 304 /****************************************************************************
 305                                 ALSA PCM Interface
 306  ****************************************************************************/
 307
 308 /*
 309  * Digital hardware definition
 310  */
 311 #define DEFAULT_FIFO_SIZE       4096
 312 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
 313         .info = SNDRV_PCM_INFO_MMAP |
 314                 SNDRV_PCM_INFO_INTERLEAVED |
 315                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 316                 SNDRV_PCM_INFO_MMAP_VALID,
 317         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 318
 319         .rates =                SNDRV_PCM_RATE_48000,
 320         .rate_min =             48000,
 321         .rate_max =             48000,
 322         .channels_min = 2,
 323         .channels_max = 2,
 324         /* Analog audio output will be full of clicks and pops if there
 325            are not exactly four lines in the SRAM FIFO buffer.  */
 326         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 327         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 328         .periods_min = 1,
 329         .periods_max = 1024,
 330         .buffer_bytes_max = (1024*1024),
 331 };
 332
 333 /*
 334  * audio pcm capture open callback
 335  */
 336 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 337 {
 338         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 339         struct snd_pcm_runtime *runtime = substream->runtime;
 340         int err;
 341
 342         if (!chip) {
 343                 printk(KERN_ERR "BUG: cx88 can't find device struct."
 344                                 " Can't proceed with open\n");
 345                 return -ENODEV;
 346         }
 347
 348         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 349         if (err < 0)
 350                 goto _error;
 351
 352         chip->substream = substream;
 353
 354         runtime->hw = snd_cx88_digital_hw;
 355
 356         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 357                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 358                 bpl &= ~7; /* must be multiple of 8 */
 359                 runtime->hw.period_bytes_min = bpl;
 360                 runtime->hw.period_bytes_max = bpl;
 361         }
 362
 363         return 0;
 364 _error:
 365         dprintk(1,"Error opening PCM!\n");
 366         return err;
 367 }
 368
 369 /*
 370  * audio close callback
 371  */
 372 static int snd_cx88_close(struct snd_pcm_substream *substream)
 373 {
 374         return 0;
 375 }
 376
 377 /*
 378  * hw_params callback
 379  */
 380 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 381                               struct snd_pcm_hw_params * hw_params)
 382 {
 383         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 384         struct videobuf_dmabuf *dma;
 385
 386         struct cx88_audio_buffer *buf;
 387         int ret;
 388
 389         if (substream->runtime->dma_area) {
 390                 dsp_buffer_free(chip);
 391                 substream->runtime->dma_area = NULL;
 392         }
 393
 394         chip->period_size = params_period_bytes(hw_params);
 395         chip->num_periods = params_periods(hw_params);
 396         chip->dma_size = chip->period_size * params_periods(hw_params);
 397
 398         BUG_ON(!chip->dma_size);
 399         BUG_ON(chip->num_periods & (chip->num_periods-1));
 400
 401         buf = kzalloc(sizeof(*buf), GFP_KERNEL);
 402         if (NULL == buf)
 403                 return -ENOMEM;
 404
 405         buf->bpl = chip->period_size;
 406
 407         dma = &buf->dma;
 408         videobuf_dma_init(dma);
 409         ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
 410                         (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
 411         if (ret < 0)
 412                 goto error;
 413
 414         ret = videobuf_dma_map(&chip->pci->dev, dma);
 415         if (ret < 0)
 416                 goto error;
 417
 418         ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
 419                                    chip->period_size, chip->num_periods, 1);
 420         if (ret < 0)
 421                 goto error;
 422
 423         /* Loop back to start of program */
 424         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 425         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 426
 427         chip->buf = buf;
 428         chip->dma_risc = dma;
 429
 430         substream->runtime->dma_area = chip->dma_risc->vaddr;
 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, const 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         struct v4l2_control client_ctl;
 591
 592         /* Pass volume & balance onto any WM8775 */
 593         if (value->value.integer.value[0] >= value->value.integer.value[1]) {
 594                 v = value->value.integer.value[0] << 10;
 595                 b = value->value.integer.value[0] ?
 596                         (0x8000 * value->value.integer.value[1]) / value->value.integer.value[0] :
 597                         0x8000;
 598         } else {
 599                 v = value->value.integer.value[1] << 10;
 600                 b = value->value.integer.value[1] ?
 601                 0xffff - (0x8000 * value->value.integer.value[0]) / value->value.integer.value[1] :
 602                 0x8000;
 603         }
 604         client_ctl.value = v;
 605         client_ctl.id = V4L2_CID_AUDIO_VOLUME;
 606         call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
 607
 608         client_ctl.value = b;
 609         client_ctl.id = V4L2_CID_AUDIO_BALANCE;
 610         call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
 611
 612         left = value->value.integer.value[0] & 0x3f;
 613         right = value->value.integer.value[1] & 0x3f;
 614         b = right - left;
 615         if (b < 0) {
 616                 v = 0x3f - left;
 617                 b = (-b) | 0x40;
 618         } else {
 619                 v = 0x3f - right;
 620         }
 621         /* Do we really know this will always be called with IRQs on? */
 622         spin_lock_irq(&chip->reg_lock);
 623         old = cx_read(AUD_VOL_CTL);
 624         if (v != (old & 0x3f)) {
 625                 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
 626                 changed = 1;
 627         }
 628         if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
 629                 cx_write(AUD_BAL_CTL, b);
 630                 changed = 1;
 631         }
 632         spin_unlock_irq(&chip->reg_lock);
 633
 634         return changed;
 635 }
 636
 637 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
 638
 639 static const struct snd_kcontrol_new snd_cx88_volume = {
 640         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 641         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
 642                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
 643         .name = "Analog-TV Volume",
 644         .info = snd_cx88_volume_info,
 645         .get = snd_cx88_volume_get,
 646         .put = snd_cx88_volume_put,
 647         .tlv.p = snd_cx88_db_scale,
 648 };
 649
 650 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
 651                                struct snd_ctl_elem_value *value)
 652 {
 653         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 654         struct cx88_core *core = chip->core;
 655         u32 bit = kcontrol->private_value;
 656
 657         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
 658         return 0;
 659 }
 660
 661 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
 662                                        struct snd_ctl_elem_value *value)
 663 {
 664         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 665         struct cx88_core *core = chip->core;
 666         u32 bit = kcontrol->private_value;
 667         int ret = 0;
 668         u32 vol;
 669
 670         spin_lock_irq(&chip->reg_lock);
 671         vol = cx_read(AUD_VOL_CTL);
 672         if (value->value.integer.value[0] != !(vol & bit)) {
 673                 vol ^= bit;
 674                 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
 675                 /* Pass mute onto any WM8775 */
 676                 if ((1<<6) == bit) {
 677                         struct v4l2_control client_ctl;
 678                         client_ctl.value = 0 != (vol & bit);
 679                         client_ctl.id = V4L2_CID_AUDIO_MUTE;
 680                         call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
 681                 }
 682                 ret = 1;
 683         }
 684         spin_unlock_irq(&chip->reg_lock);
 685         return ret;
 686 }
 687
 688 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
 689         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 690         .name = "Audio-Out Switch",
 691         .info = snd_ctl_boolean_mono_info,
 692         .get = snd_cx88_switch_get,
 693         .put = snd_cx88_switch_put,
 694         .private_value = (1<<8),
 695 };
 696
 697 static const struct snd_kcontrol_new snd_cx88_source_switch = {
 698         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 699         .name = "Analog-TV Switch",
 700         .info = snd_ctl_boolean_mono_info,
 701         .get = snd_cx88_switch_get,
 702         .put = snd_cx88_switch_put,
 703         .private_value = (1<<6),
 704 };
 705
 706 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
 707                                struct snd_ctl_elem_value *value)
 708 {
 709         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 710         struct cx88_core *core = chip->core;
 711         struct v4l2_control client_ctl;
 712
 713         client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
 714         call_hw(core, WM8775_GID, core, g_ctrl, &client_ctl);
 715         value->value.integer.value[0] = client_ctl.value ? 1 : 0;
 716
 717         return 0;
 718 }
 719
 720 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
 721                                        struct snd_ctl_elem_value *value)
 722 {
 723         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 724         struct cx88_core *core = chip->core;
 725         struct v4l2_control client_ctl;
 726
 727         client_ctl.value = 0 != value->value.integer.value[0];
 728         client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
 729         call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
 730
 731         return 0;
 732 }
 733
 734 static struct snd_kcontrol_new snd_cx88_alc_switch = {
 735         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 736         .name = "Line-In ALC Switch",
 737         .info = snd_ctl_boolean_mono_info,
 738         .get = snd_cx88_alc_get,
 739         .put = snd_cx88_alc_put,
 740 };
 741
 742 /****************************************************************************
 743                         Basic Flow for Sound Devices
 744  ****************************************************************************/
 745
 746 /*
 747  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 748  * Only boards with eeprom and byte 1 at eeprom=1 have it
 749  */
 750
 751 static const struct pci_device_id const cx88_audio_pci_tbl[] __devinitdata = {
 752         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 753         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 754         {0, }
 755 };
 756 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 757
 758 /*
 759  * Chip-specific destructor
 760  */
 761
 762 static int snd_cx88_free(snd_cx88_card_t *chip)
 763 {
 764
 765         if (chip->irq >= 0)
 766                 free_irq(chip->irq, chip);
 767
 768         cx88_core_put(chip->core,chip->pci);
 769
 770         pci_disable_device(chip->pci);
 771         return 0;
 772 }
 773
 774 /*
 775  * Component Destructor
 776  */
 777 static void snd_cx88_dev_free(struct snd_card * card)
 778 {
 779         snd_cx88_card_t *chip = card->private_data;
 780
 781         snd_cx88_free(chip);
 782 }
 783
 784
 785 /*
 786  * Alsa Constructor - Component probe
 787  */
 788
 789 static int devno;
 790 static int __devinit snd_cx88_create(struct snd_card *card,
 791                                      struct pci_dev *pci,
 792                                      snd_cx88_card_t **rchip)
 793 {
 794         snd_cx88_card_t   *chip;
 795         struct cx88_core  *core;
 796         int               err;
 797         unsigned char     pci_lat;
 798
 799         *rchip = NULL;
 800
 801         err = pci_enable_device(pci);
 802         if (err < 0)
 803                 return err;
 804
 805         pci_set_master(pci);
 806
 807         chip = card->private_data;
 808
 809         core = cx88_core_get(pci);
 810         if (NULL == core) {
 811                 err = -EINVAL;
 812                 return err;
 813         }
 814
 815         if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
 816                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 817                 err = -EIO;
 818                 cx88_core_put(core,pci);
 819                 return err;
 820         }
 821
 822
 823         /* pci init */
 824         chip->card = card;
 825         chip->pci = pci;
 826         chip->irq = -1;
 827         spin_lock_init(&chip->reg_lock);
 828
 829         chip->core = core;
 830
 831         /* get irq */
 832         err = request_irq(chip->pci->irq, cx8801_irq,
 833                           IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip);
 834         if (err < 0) {
 835                 dprintk(0, "%s: can't get IRQ %d\n",
 836                        chip->core->name, chip->pci->irq);
 837                 return err;
 838         }
 839
 840         /* print pci info */
 841         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 842
 843         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 844                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 845                pci_name(pci), pci->revision, pci->irq,
 846                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 847
 848         chip->irq = pci->irq;
 849         synchronize_irq(chip->irq);
 850
 851         snd_card_set_dev(card, &pci->dev);
 852
 853         *rchip = chip;
 854
 855         return 0;
 856 }
 857
 858 static int __devinit cx88_audio_initdev(struct pci_dev *pci,
 859                                     const struct pci_device_id *pci_id)
 860 {
 861         struct snd_card  *card;
 862         snd_cx88_card_t  *chip;
 863         struct v4l2_subdev *sd;
 864         int              err;
 865
 866         if (devno >= SNDRV_CARDS)
 867                 return (-ENODEV);
 868
 869         if (!enable[devno]) {
 870                 ++devno;
 871                 return (-ENOENT);
 872         }
 873
 874         err = snd_card_create(index[devno], id[devno], THIS_MODULE,
 875                               sizeof(snd_cx88_card_t), &card);
 876         if (err < 0)
 877                 return err;
 878
 879         card->private_free = snd_cx88_dev_free;
 880
 881         err = snd_cx88_create(card, pci, &chip);
 882         if (err < 0)
 883                 goto error;
 884
 885         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 886         if (err < 0)
 887                 goto error;
 888
 889         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
 890         if (err < 0)
 891                 goto error;
 892         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
 893         if (err < 0)
 894                 goto error;
 895         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
 896         if (err < 0)
 897                 goto error;
 898
 899         /* If there's a wm8775 then add a Line-In ALC switch */
 900         list_for_each_entry(sd, &chip->core->v4l2_dev.subdevs, list) {
 901                 if (WM8775_GID == sd->grp_id) {
 902                         snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch,
 903                                                        chip));
 904                         break;
 905                 }
 906         }
 907
 908         strcpy (card->driver, "CX88x");
 909         sprintf(card->shortname, "Conexant CX%x", pci->device);
 910         sprintf(card->longname, "%s at %#llx",
 911                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 912         strcpy (card->mixername, "CX88");
 913
 914         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 915                card->driver,devno);
 916
 917         err = snd_card_register(card);
 918         if (err < 0)
 919                 goto error;
 920         pci_set_drvdata(pci,card);
 921
 922         devno++;
 923         return 0;
 924
 925 error:
 926         snd_card_free(card);
 927         return err;
 928 }
 929 /*
 930  * ALSA destructor
 931  */
 932 static void __devexit cx88_audio_finidev(struct pci_dev *pci)
 933 {
 934         struct cx88_audio_dev *card = pci_get_drvdata(pci);
 935
 936         snd_card_free((void *)card);
 937
 938         pci_set_drvdata(pci, NULL);
 939
 940         devno--;
 941 }
 942
 943 /*
 944  * PCI driver definition
 945  */
 946
 947 static struct pci_driver cx88_audio_pci_driver = {
 948         .name     = "cx88_audio",
 949         .id_table = cx88_audio_pci_tbl,
 950         .probe    = cx88_audio_initdev,
 951         .remove   = __devexit_p(cx88_audio_finidev),
 952 };
 953
 954 /****************************************************************************
 955                                 LINUX MODULE INIT
 956  ****************************************************************************/
 957
 958 /*
 959  * module init
 960  */
 961 static int __init cx88_audio_init(void)
 962 {
 963         printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n",
 964                (CX88_VERSION_CODE >> 16) & 0xff,
 965                (CX88_VERSION_CODE >>  8) & 0xff,
 966                CX88_VERSION_CODE & 0xff);
 967 #ifdef SNAPSHOT
 968         printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
 969                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
 970 #endif
 971         return pci_register_driver(&cx88_audio_pci_driver);
 972 }
 973
 974 /*
 975  * module remove
 976  */
 977 static void __exit cx88_audio_fini(void)
 978 {
 979         pci_unregister_driver(&cx88_audio_pci_driver);
 980 }
 981
 982 module_init(cx88_audio_init);
 983 module_exit(cx88_audio_fini);
 984
 985 /* ----------------------------------------------------------- */
 986 /*
 987  * Local variables:
 988  * c-basic-offset: 8
 989  * End:
 990  */