linux/drivers/media/pci/cx88/cx88-alsa.c
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   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...) do {                                \
  49        if (debug + 1 > level)                                          \
  50                printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg);\
  51} while(0)
  52
  53#define dprintk_core(level, fmt, arg...) do {                           \
  54        if (debug + 1 > level)                                          \
  55                printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg);\
  56} while(0)
  57
  58/****************************************************************************
  59        Data type declarations - Can be moded to a header file later
  60 ****************************************************************************/
  61
  62struct cx88_audio_buffer {
  63        unsigned int               bpl;
  64        struct btcx_riscmem        risc;
  65        struct videobuf_dmabuf     dma;
  66};
  67
  68struct cx88_audio_dev {
  69        struct cx88_core           *core;
  70        struct cx88_dmaqueue       q;
  71
  72        /* pci i/o */
  73        struct pci_dev             *pci;
  74
  75        /* audio controls */
  76        int                        irq;
  77
  78        struct snd_card            *card;
  79
  80        spinlock_t                 reg_lock;
  81        atomic_t                   count;
  82
  83        unsigned int               dma_size;
  84        unsigned int               period_size;
  85        unsigned int               num_periods;
  86
  87        struct videobuf_dmabuf     *dma_risc;
  88
  89        struct cx88_audio_buffer   *buf;
  90
  91        struct snd_pcm_substream   *substream;
  92};
  93typedef struct cx88_audio_dev snd_cx88_card_t;
  94
  95
  96
  97/****************************************************************************
  98                        Module global static vars
  99 ****************************************************************************/
 100
 101static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 102static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
 103static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1};
 104
 105module_param_array(enable, bool, NULL, 0444);
 106MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
 107
 108module_param_array(index, int, NULL, 0444);
 109MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
 110
 111
 112/****************************************************************************
 113                                Module macros
 114 ****************************************************************************/
 115
 116MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 117MODULE_AUTHOR("Ricardo Cerqueira");
 118MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 119MODULE_LICENSE("GPL");
 120MODULE_VERSION(CX88_VERSION);
 121
 122MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 123                        "{{Conexant,23882},"
 124                        "{{Conexant,23883}");
 125static unsigned int debug;
 126module_param(debug,int,0644);
 127MODULE_PARM_DESC(debug,"enable debug messages");
 128
 129/****************************************************************************
 130                        Module specific funtions
 131 ****************************************************************************/
 132
 133/*
 134 * BOARD Specific: Sets audio DMA
 135 */
 136
 137static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 138{
 139        struct cx88_audio_buffer *buf = chip->buf;
 140        struct cx88_core *core=chip->core;
 141        const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 142
 143        /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 144        cx_clear(MO_AUD_DMACNTRL, 0x11);
 145
 146        /* setup fifo + format - out channel */
 147        cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 148
 149        /* sets bpl size */
 150        cx_write(MO_AUDD_LNGTH, buf->bpl);
 151
 152        /* reset counter */
 153        cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 154        atomic_set(&chip->count, 0);
 155
 156        dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 157                "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 158                chip->num_periods, buf->bpl * chip->num_periods);
 159
 160        /* Enables corresponding bits at AUD_INT_STAT */
 161        cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 162                                AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 163
 164        /* Clean any pending interrupt bits already set */
 165        cx_write(MO_AUD_INTSTAT, ~0);
 166
 167        /* enable audio irqs */
 168        cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 169
 170        /* start dma */
 171        cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 172        cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 173
 174        if (debug)
 175                cx88_sram_channel_dump(chip->core, audio_ch);
 176
 177        return 0;
 178}
 179
 180/*
 181 * BOARD Specific: Resets audio DMA
 182 */
 183static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 184{
 185        struct cx88_core *core=chip->core;
 186        dprintk(1, "Stopping audio DMA\n");
 187
 188        /* stop dma */
 189        cx_clear(MO_AUD_DMACNTRL, 0x11);
 190
 191        /* disable irqs */
 192        cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 193        cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 194                                AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 195
 196        if (debug)
 197                cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 198
 199        return 0;
 200}
 201
 202#define MAX_IRQ_LOOP 50
 203
 204/*
 205 * BOARD Specific: IRQ dma bits
 206 */
 207static const char *cx88_aud_irqs[32] = {
 208        "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 209        NULL,                                     /* reserved */
 210        "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 211        NULL,                                     /* reserved */
 212        "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 213        NULL,                                     /* reserved */
 214        "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 215        NULL,                                     /* reserved */
 216        "opc_err", "par_err", "rip_err",          /* 16-18 */
 217        "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 218};
 219
 220/*
 221 * BOARD Specific: Threats IRQ audio specific calls
 222 */
 223static void cx8801_aud_irq(snd_cx88_card_t *chip)
 224{
 225        struct cx88_core *core = chip->core;
 226        u32 status, mask;
 227
 228        status = cx_read(MO_AUD_INTSTAT);
 229        mask   = cx_read(MO_AUD_INTMSK);
 230        if (0 == (status & mask))
 231                return;
 232        cx_write(MO_AUD_INTSTAT, status);
 233        if (debug > 1  ||  (status & mask & ~0xff))
 234                cx88_print_irqbits(core->name, "irq aud",
 235                                   cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 236                                   status, mask);
 237        /* risc op code error */
 238        if (status & AUD_INT_OPC_ERR) {
 239                printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 240                cx_clear(MO_AUD_DMACNTRL, 0x11);
 241                cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 242        }
 243        if (status & AUD_INT_DN_SYNC) {
 244                dprintk(1, "Downstream sync error\n");
 245                cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 246                return;
 247        }
 248        /* risc1 downstream */
 249        if (status & AUD_INT_DN_RISCI1) {
 250                atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 251                snd_pcm_period_elapsed(chip->substream);
 252        }
 253        /* FIXME: Any other status should deserve a special handling? */
 254}
 255
 256/*
 257 * BOARD Specific: Handles IRQ calls
 258 */
 259static irqreturn_t cx8801_irq(int irq, void *dev_id)
 260{
 261        snd_cx88_card_t *chip = dev_id;
 262        struct cx88_core *core = chip->core;
 263        u32 status;
 264        int loop, handled = 0;
 265
 266        for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 267                status = cx_read(MO_PCI_INTSTAT) &
 268                        (core->pci_irqmask | PCI_INT_AUDINT);
 269                if (0 == status)
 270                        goto out;
 271                dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 272                        loop, MAX_IRQ_LOOP, status);
 273                handled = 1;
 274                cx_write(MO_PCI_INTSTAT, status);
 275
 276                if (status & core->pci_irqmask)
 277                        cx88_core_irq(core, status);
 278                if (status & PCI_INT_AUDINT)
 279                        cx8801_aud_irq(chip);
 280        }
 281
 282        if (MAX_IRQ_LOOP == loop) {
 283                printk(KERN_ERR
 284                       "%s/1: IRQ loop detected, disabling interrupts\n",
 285                       core->name);
 286                cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 287        }
 288
 289 out:
 290        return IRQ_RETVAL(handled);
 291}
 292
 293
 294static int dsp_buffer_free(snd_cx88_card_t *chip)
 295{
 296        BUG_ON(!chip->dma_size);
 297
 298        dprintk(2,"Freeing buffer\n");
 299        videobuf_dma_unmap(&chip->pci->dev, chip->dma_risc);
 300        videobuf_dma_free(chip->dma_risc);
 301        btcx_riscmem_free(chip->pci,&chip->buf->risc);
 302        kfree(chip->buf);
 303
 304        chip->dma_risc = NULL;
 305        chip->dma_size = 0;
 306
 307        return 0;
 308}
 309
 310/****************************************************************************
 311                                ALSA PCM Interface
 312 ****************************************************************************/
 313
 314/*
 315 * Digital hardware definition
 316 */
 317#define DEFAULT_FIFO_SIZE       4096
 318static const struct snd_pcm_hardware snd_cx88_digital_hw = {
 319        .info = SNDRV_PCM_INFO_MMAP |
 320                SNDRV_PCM_INFO_INTERLEAVED |
 321                SNDRV_PCM_INFO_BLOCK_TRANSFER |
 322                SNDRV_PCM_INFO_MMAP_VALID,
 323        .formats = SNDRV_PCM_FMTBIT_S16_LE,
 324
 325        .rates =                SNDRV_PCM_RATE_48000,
 326        .rate_min =             48000,
 327        .rate_max =             48000,
 328        .channels_min = 2,
 329        .channels_max = 2,
 330        /* Analog audio output will be full of clicks and pops if there
 331           are not exactly four lines in the SRAM FIFO buffer.  */
 332        .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 333        .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 334        .periods_min = 1,
 335        .periods_max = 1024,
 336        .buffer_bytes_max = (1024*1024),
 337};
 338
 339/*
 340 * audio pcm capture open callback
 341 */
 342static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 343{
 344        snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 345        struct snd_pcm_runtime *runtime = substream->runtime;
 346        int err;
 347
 348        if (!chip) {
 349                printk(KERN_ERR "BUG: cx88 can't find device struct."
 350                                " Can't proceed with open\n");
 351                return -ENODEV;
 352        }
 353
 354        err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 355        if (err < 0)
 356                goto _error;
 357
 358        chip->substream = substream;
 359
 360        runtime->hw = snd_cx88_digital_hw;
 361
 362        if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 363                unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 364                bpl &= ~7; /* must be multiple of 8 */
 365                runtime->hw.period_bytes_min = bpl;
 366                runtime->hw.period_bytes_max = bpl;
 367        }
 368
 369        return 0;
 370_error:
 371        dprintk(1,"Error opening PCM!\n");
 372        return err;
 373}
 374
 375/*
 376 * audio close callback
 377 */
 378static int snd_cx88_close(struct snd_pcm_substream *substream)
 379{
 380        return 0;
 381}
 382
 383/*
 384 * hw_params callback
 385 */
 386static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 387                              struct snd_pcm_hw_params * hw_params)
 388{
 389        snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 390        struct videobuf_dmabuf *dma;
 391
 392        struct cx88_audio_buffer *buf;
 393        int ret;
 394
 395        if (substream->runtime->dma_area) {
 396                dsp_buffer_free(chip);
 397                substream->runtime->dma_area = NULL;
 398        }
 399
 400        chip->period_size = params_period_bytes(hw_params);
 401        chip->num_periods = params_periods(hw_params);
 402        chip->dma_size = chip->period_size * params_periods(hw_params);
 403
 404        BUG_ON(!chip->dma_size);
 405        BUG_ON(chip->num_periods & (chip->num_periods-1));
 406
 407        buf = kzalloc(sizeof(*buf), GFP_KERNEL);
 408        if (NULL == buf)
 409                return -ENOMEM;
 410
 411        buf->bpl = chip->period_size;
 412
 413        dma = &buf->dma;
 414        videobuf_dma_init(dma);
 415        ret = videobuf_dma_init_kernel(dma, PCI_DMA_FROMDEVICE,
 416                        (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
 417        if (ret < 0)
 418                goto error;
 419
 420        ret = videobuf_dma_map(&chip->pci->dev, dma);
 421        if (ret < 0)
 422                goto error;
 423
 424        ret = cx88_risc_databuffer(chip->pci, &buf->risc, dma->sglist,
 425                                   chip->period_size, chip->num_periods, 1);
 426        if (ret < 0)
 427                goto error;
 428
 429        /* Loop back to start of program */
 430        buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 431        buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 432
 433        chip->buf = buf;
 434        chip->dma_risc = dma;
 435
 436        substream->runtime->dma_area = chip->dma_risc->vaddr;
 437        substream->runtime->dma_bytes = chip->dma_size;
 438        substream->runtime->dma_addr = 0;
 439        return 0;
 440
 441error:
 442        kfree(buf);
 443        return ret;
 444}
 445
 446/*
 447 * hw free callback
 448 */
 449static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 450{
 451
 452        snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 453
 454        if (substream->runtime->dma_area) {
 455                dsp_buffer_free(chip);
 456                substream->runtime->dma_area = NULL;
 457        }
 458
 459        return 0;
 460}
 461
 462/*
 463 * prepare callback
 464 */
 465static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 466{
 467        return 0;
 468}
 469
 470/*
 471 * trigger callback
 472 */
 473static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 474{
 475        snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 476        int err;
 477
 478        /* Local interrupts are already disabled by ALSA */
 479        spin_lock(&chip->reg_lock);
 480
 481        switch (cmd) {
 482        case SNDRV_PCM_TRIGGER_START:
 483                err=_cx88_start_audio_dma(chip);
 484                break;
 485        case SNDRV_PCM_TRIGGER_STOP:
 486                err=_cx88_stop_audio_dma(chip);
 487                break;
 488        default:
 489                err=-EINVAL;
 490                break;
 491        }
 492
 493        spin_unlock(&chip->reg_lock);
 494
 495        return err;
 496}
 497
 498/*
 499 * pointer callback
 500 */
 501static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 502{
 503        snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 504        struct snd_pcm_runtime *runtime = substream->runtime;
 505        u16 count;
 506
 507        count = atomic_read(&chip->count);
 508
 509//      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
 510//              count, new, count & (runtime->periods-1),
 511//              runtime->period_size * (count & (runtime->periods-1)));
 512        return runtime->period_size * (count & (runtime->periods-1));
 513}
 514
 515/*
 516 * page callback (needed for mmap)
 517 */
 518static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
 519                                unsigned long offset)
 520{
 521        void *pageptr = substream->runtime->dma_area + offset;
 522        return vmalloc_to_page(pageptr);
 523}
 524
 525/*
 526 * operators
 527 */
 528static struct snd_pcm_ops snd_cx88_pcm_ops = {
 529        .open = snd_cx88_pcm_open,
 530        .close = snd_cx88_close,
 531        .ioctl = snd_pcm_lib_ioctl,
 532        .hw_params = snd_cx88_hw_params,
 533        .hw_free = snd_cx88_hw_free,
 534        .prepare = snd_cx88_prepare,
 535        .trigger = snd_cx88_card_trigger,
 536        .pointer = snd_cx88_pointer,
 537        .page = snd_cx88_page,
 538};
 539
 540/*
 541 * create a PCM device
 542 */
 543static int snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
 544{
 545        int err;
 546        struct snd_pcm *pcm;
 547
 548        err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 549        if (err < 0)
 550                return err;
 551        pcm->private_data = chip;
 552        strcpy(pcm->name, name);
 553        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 554
 555        return 0;
 556}
 557
 558/****************************************************************************
 559                                CONTROL INTERFACE
 560 ****************************************************************************/
 561static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
 562                                struct snd_ctl_elem_info *info)
 563{
 564        info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 565        info->count = 2;
 566        info->value.integer.min = 0;
 567        info->value.integer.max = 0x3f;
 568
 569        return 0;
 570}
 571
 572static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
 573                               struct snd_ctl_elem_value *value)
 574{
 575        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 576        struct cx88_core *core=chip->core;
 577        int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
 578            bal = cx_read(AUD_BAL_CTL);
 579
 580        value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
 581        vol -= (bal & 0x3f);
 582        value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
 583
 584        return 0;
 585}
 586
 587static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol,
 588                               struct snd_ctl_elem_value *value)
 589{
 590        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 591        struct cx88_core *core = chip->core;
 592        int left = value->value.integer.value[0];
 593        int right = value->value.integer.value[1];
 594        int v, b;
 595
 596        /* Pass volume & balance onto any WM8775 */
 597        if (left >= right) {
 598                v = left << 10;
 599                b = left ? (0x8000 * right) / left : 0x8000;
 600        } else {
 601                v = right << 10;
 602                b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
 603        }
 604        wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
 605        wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
 606}
 607
 608/* OK - TODO: test it */
 609static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
 610                               struct snd_ctl_elem_value *value)
 611{
 612        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 613        struct cx88_core *core=chip->core;
 614        int left, right, v, b;
 615        int changed = 0;
 616        u32 old;
 617
 618        if (core->sd_wm8775)
 619                snd_cx88_wm8775_volume_put(kcontrol, value);
 620
 621        left = value->value.integer.value[0] & 0x3f;
 622        right = value->value.integer.value[1] & 0x3f;
 623        b = right - left;
 624        if (b < 0) {
 625                v = 0x3f - left;
 626                b = (-b) | 0x40;
 627        } else {
 628                v = 0x3f - right;
 629        }
 630        /* Do we really know this will always be called with IRQs on? */
 631        spin_lock_irq(&chip->reg_lock);
 632        old = cx_read(AUD_VOL_CTL);
 633        if (v != (old & 0x3f)) {
 634                cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
 635                changed = 1;
 636        }
 637        if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
 638                cx_write(AUD_BAL_CTL, b);
 639                changed = 1;
 640        }
 641        spin_unlock_irq(&chip->reg_lock);
 642
 643        return changed;
 644}
 645
 646static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
 647
 648static const struct snd_kcontrol_new snd_cx88_volume = {
 649        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 650        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
 651                  SNDRV_CTL_ELEM_ACCESS_TLV_READ,
 652        .name = "Analog-TV Volume",
 653        .info = snd_cx88_volume_info,
 654        .get = snd_cx88_volume_get,
 655        .put = snd_cx88_volume_put,
 656        .tlv.p = snd_cx88_db_scale,
 657};
 658
 659static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
 660                               struct snd_ctl_elem_value *value)
 661{
 662        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 663        struct cx88_core *core = chip->core;
 664        u32 bit = kcontrol->private_value;
 665
 666        value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
 667        return 0;
 668}
 669
 670static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
 671                                       struct snd_ctl_elem_value *value)
 672{
 673        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 674        struct cx88_core *core = chip->core;
 675        u32 bit = kcontrol->private_value;
 676        int ret = 0;
 677        u32 vol;
 678
 679        spin_lock_irq(&chip->reg_lock);
 680        vol = cx_read(AUD_VOL_CTL);
 681        if (value->value.integer.value[0] != !(vol & bit)) {
 682                vol ^= bit;
 683                cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
 684                /* Pass mute onto any WM8775 */
 685                if (core->sd_wm8775 && ((1<<6) == bit))
 686                        wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
 687                ret = 1;
 688        }
 689        spin_unlock_irq(&chip->reg_lock);
 690        return ret;
 691}
 692
 693static const struct snd_kcontrol_new snd_cx88_dac_switch = {
 694        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 695        .name = "Audio-Out Switch",
 696        .info = snd_ctl_boolean_mono_info,
 697        .get = snd_cx88_switch_get,
 698        .put = snd_cx88_switch_put,
 699        .private_value = (1<<8),
 700};
 701
 702static const struct snd_kcontrol_new snd_cx88_source_switch = {
 703        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 704        .name = "Analog-TV Switch",
 705        .info = snd_ctl_boolean_mono_info,
 706        .get = snd_cx88_switch_get,
 707        .put = snd_cx88_switch_put,
 708        .private_value = (1<<6),
 709};
 710
 711static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
 712                               struct snd_ctl_elem_value *value)
 713{
 714        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 715        struct cx88_core *core = chip->core;
 716        s32 val;
 717
 718        val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
 719        value->value.integer.value[0] = val ? 1 : 0;
 720        return 0;
 721}
 722
 723static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
 724                                       struct snd_ctl_elem_value *value)
 725{
 726        snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 727        struct cx88_core *core = chip->core;
 728        struct v4l2_control client_ctl;
 729
 730        memset(&client_ctl, 0, sizeof(client_ctl));
 731        client_ctl.value = 0 != value->value.integer.value[0];
 732        client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
 733        call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
 734
 735        return 0;
 736}
 737
 738static struct snd_kcontrol_new snd_cx88_alc_switch = {
 739        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 740        .name = "Line-In ALC Switch",
 741        .info = snd_ctl_boolean_mono_info,
 742        .get = snd_cx88_alc_get,
 743        .put = snd_cx88_alc_put,
 744};
 745
 746/****************************************************************************
 747                        Basic Flow for Sound Devices
 748 ****************************************************************************/
 749
 750/*
 751 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 752 * Only boards with eeprom and byte 1 at eeprom=1 have it
 753 */
 754
 755static const struct pci_device_id cx88_audio_pci_tbl[] = {
 756        {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 757        {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 758        {0, }
 759};
 760MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 761
 762/*
 763 * Chip-specific destructor
 764 */
 765
 766static int snd_cx88_free(snd_cx88_card_t *chip)
 767{
 768
 769        if (chip->irq >= 0)
 770                free_irq(chip->irq, chip);
 771
 772        cx88_core_put(chip->core,chip->pci);
 773
 774        pci_disable_device(chip->pci);
 775        return 0;
 776}
 777
 778/*
 779 * Component Destructor
 780 */
 781static void snd_cx88_dev_free(struct snd_card * card)
 782{
 783        snd_cx88_card_t *chip = card->private_data;
 784
 785        snd_cx88_free(chip);
 786}
 787
 788
 789/*
 790 * Alsa Constructor - Component probe
 791 */
 792
 793static int devno;
 794static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
 795                           snd_cx88_card_t **rchip,
 796                           struct cx88_core **core_ptr)
 797{
 798        snd_cx88_card_t   *chip;
 799        struct cx88_core  *core;
 800        int               err;
 801        unsigned char     pci_lat;
 802
 803        *rchip = NULL;
 804
 805        err = pci_enable_device(pci);
 806        if (err < 0)
 807                return err;
 808
 809        pci_set_master(pci);
 810
 811        chip = card->private_data;
 812
 813        core = cx88_core_get(pci);
 814        if (NULL == core) {
 815                err = -EINVAL;
 816                return err;
 817        }
 818
 819        if (!pci_dma_supported(pci,DMA_BIT_MASK(32))) {
 820                dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 821                err = -EIO;
 822                cx88_core_put(core, pci);
 823                return err;
 824        }
 825
 826
 827        /* pci init */
 828        chip->card = card;
 829        chip->pci = pci;
 830        chip->irq = -1;
 831        spin_lock_init(&chip->reg_lock);
 832
 833        chip->core = core;
 834
 835        /* get irq */
 836        err = request_irq(chip->pci->irq, cx8801_irq,
 837                          IRQF_SHARED, chip->core->name, chip);
 838        if (err < 0) {
 839                dprintk(0, "%s: can't get IRQ %d\n",
 840                       chip->core->name, chip->pci->irq);
 841                return err;
 842        }
 843
 844        /* print pci info */
 845        pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 846
 847        dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 848               "latency: %d, mmio: 0x%llx\n", core->name, devno,
 849               pci_name(pci), pci->revision, pci->irq,
 850               pci_lat, (unsigned long long)pci_resource_start(pci,0));
 851
 852        chip->irq = pci->irq;
 853        synchronize_irq(chip->irq);
 854
 855        snd_card_set_dev(card, &pci->dev);
 856
 857        *rchip = chip;
 858        *core_ptr = core;
 859
 860        return 0;
 861}
 862
 863static int cx88_audio_initdev(struct pci_dev *pci,
 864                              const struct pci_device_id *pci_id)
 865{
 866        struct snd_card  *card;
 867        snd_cx88_card_t  *chip;
 868        struct cx88_core *core = NULL;
 869        int              err;
 870
 871        if (devno >= SNDRV_CARDS)
 872                return (-ENODEV);
 873
 874        if (!enable[devno]) {
 875                ++devno;
 876                return (-ENOENT);
 877        }
 878
 879        err = snd_card_create(index[devno], id[devno], THIS_MODULE,
 880                              sizeof(snd_cx88_card_t), &card);
 881        if (err < 0)
 882                return err;
 883
 884        card->private_free = snd_cx88_dev_free;
 885
 886        err = snd_cx88_create(card, pci, &chip, &core);
 887        if (err < 0)
 888                goto error;
 889
 890        err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 891        if (err < 0)
 892                goto error;
 893
 894        err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
 895        if (err < 0)
 896                goto error;
 897        err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
 898        if (err < 0)
 899                goto error;
 900        err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
 901        if (err < 0)
 902                goto error;
 903
 904        /* If there's a wm8775 then add a Line-In ALC switch */
 905        if (core->sd_wm8775)
 906                snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
 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
 925error:
 926        snd_card_free(card);
 927        return err;
 928}
 929/*
 930 * ALSA destructor
 931 */
 932static void 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        devno--;
 939}
 940
 941/*
 942 * PCI driver definition
 943 */
 944
 945static struct pci_driver cx88_audio_pci_driver = {
 946        .name     = "cx88_audio",
 947        .id_table = cx88_audio_pci_tbl,
 948        .probe    = cx88_audio_initdev,
 949        .remove   = cx88_audio_finidev,
 950};
 951
 952module_pci_driver(cx88_audio_pci_driver);
 953