drivers/media/pci/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...) 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
  62 struct cx88_audio_buffer {
  63         unsigned int               bpl;
  64         struct cx88_riscmem        risc;
  65         void                    *vaddr;
  66         struct scatterlist      *sglist;
  67         int                     sglen;
  68         int                     nr_pages;
  69 };
  70
  71 struct cx88_audio_dev {
  72         struct cx88_core           *core;
  73         struct cx88_dmaqueue       q;
  74
  75         /* pci i/o */
  76         struct pci_dev             *pci;
  77
  78         /* audio controls */
  79         int                        irq;
  80
  81         struct snd_card            *card;
  82
  83         spinlock_t                 reg_lock;
  84         atomic_t                   count;
  85
  86         unsigned int               dma_size;
  87         unsigned int               period_size;
  88         unsigned int               num_periods;
  89
  90         struct cx88_audio_buffer   *buf;
  91
  92         struct snd_pcm_substream   *substream;
  93 };
  94 typedef struct cx88_audio_dev snd_cx88_card_t;
  95
  96
  97
  98 /****************************************************************************
  99                         Module global static vars
 100  ****************************************************************************/
 101
 102 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 103 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
 104 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 105
 106 module_param_array(enable, bool, NULL, 0444);
 107 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled.");
 108
 109 module_param_array(index, int, NULL, 0444);
 110 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s).");
 111
 112
 113 /****************************************************************************
 114                                 Module macros
 115  ****************************************************************************/
 116
 117 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards");
 118 MODULE_AUTHOR("Ricardo Cerqueira");
 119 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
 120 MODULE_LICENSE("GPL");
 121 MODULE_VERSION(CX88_VERSION);
 122
 123 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},"
 124                         "{{Conexant,23882},"
 125                         "{{Conexant,23883}");
 126 static unsigned int debug;
 127 module_param(debug,int,0644);
 128 MODULE_PARM_DESC(debug,"enable debug messages");
 129
 130 /****************************************************************************
 131                         Module specific funtions
 132  ****************************************************************************/
 133
 134 /*
 135  * BOARD Specific: Sets audio DMA
 136  */
 137
 138 static int _cx88_start_audio_dma(snd_cx88_card_t *chip)
 139 {
 140         struct cx88_audio_buffer *buf = chip->buf;
 141         struct cx88_core *core=chip->core;
 142         const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25];
 143
 144         /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */
 145         cx_clear(MO_AUD_DMACNTRL, 0x11);
 146
 147         /* setup fifo + format - out channel */
 148         cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma);
 149
 150         /* sets bpl size */
 151         cx_write(MO_AUDD_LNGTH, buf->bpl);
 152
 153         /* reset counter */
 154         cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 155         atomic_set(&chip->count, 0);
 156
 157         dprintk(1, "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d "
 158                 "byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start + 8)>>1,
 159                 chip->num_periods, buf->bpl * chip->num_periods);
 160
 161         /* Enables corresponding bits at AUD_INT_STAT */
 162         cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 163                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 164
 165         /* Clean any pending interrupt bits already set */
 166         cx_write(MO_AUD_INTSTAT, ~0);
 167
 168         /* enable audio irqs */
 169         cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT);
 170
 171         /* start dma */
 172         cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */
 173         cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */
 174
 175         if (debug)
 176                 cx88_sram_channel_dump(chip->core, audio_ch);
 177
 178         return 0;
 179 }
 180
 181 /*
 182  * BOARD Specific: Resets audio DMA
 183  */
 184 static int _cx88_stop_audio_dma(snd_cx88_card_t *chip)
 185 {
 186         struct cx88_core *core=chip->core;
 187         dprintk(1, "Stopping audio DMA\n");
 188
 189         /* stop dma */
 190         cx_clear(MO_AUD_DMACNTRL, 0x11);
 191
 192         /* disable irqs */
 193         cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 194         cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC |
 195                                 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1);
 196
 197         if (debug)
 198                 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]);
 199
 200         return 0;
 201 }
 202
 203 #define MAX_IRQ_LOOP 50
 204
 205 /*
 206  * BOARD Specific: IRQ dma bits
 207  */
 208 static const char *cx88_aud_irqs[32] = {
 209         "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */
 210         NULL,                                     /* reserved */
 211         "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */
 212         NULL,                                     /* reserved */
 213         "dnf_of", "upf_uf", "rds_dnf_uf",         /* 8-10 */
 214         NULL,                                     /* reserved */
 215         "dn_sync", "up_sync", "rds_dn_sync",      /* 12-14 */
 216         NULL,                                     /* reserved */
 217         "opc_err", "par_err", "rip_err",          /* 16-18 */
 218         "pci_abort", "ber_irq", "mchg_irq"        /* 19-21 */
 219 };
 220
 221 /*
 222  * BOARD Specific: Threats IRQ audio specific calls
 223  */
 224 static void cx8801_aud_irq(snd_cx88_card_t *chip)
 225 {
 226         struct cx88_core *core = chip->core;
 227         u32 status, mask;
 228
 229         status = cx_read(MO_AUD_INTSTAT);
 230         mask   = cx_read(MO_AUD_INTMSK);
 231         if (0 == (status & mask))
 232                 return;
 233         cx_write(MO_AUD_INTSTAT, status);
 234         if (debug > 1  ||  (status & mask & ~0xff))
 235                 cx88_print_irqbits(core->name, "irq aud",
 236                                    cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs),
 237                                    status, mask);
 238         /* risc op code error */
 239         if (status & AUD_INT_OPC_ERR) {
 240                 printk(KERN_WARNING "%s/1: Audio risc op code error\n",core->name);
 241                 cx_clear(MO_AUD_DMACNTRL, 0x11);
 242                 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]);
 243         }
 244         if (status & AUD_INT_DN_SYNC) {
 245                 dprintk(1, "Downstream sync error\n");
 246                 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET);
 247                 return;
 248         }
 249         /* risc1 downstream */
 250         if (status & AUD_INT_DN_RISCI1) {
 251                 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT));
 252                 snd_pcm_period_elapsed(chip->substream);
 253         }
 254         /* FIXME: Any other status should deserve a special handling? */
 255 }
 256
 257 /*
 258  * BOARD Specific: Handles IRQ calls
 259  */
 260 static irqreturn_t cx8801_irq(int irq, void *dev_id)
 261 {
 262         snd_cx88_card_t *chip = dev_id;
 263         struct cx88_core *core = chip->core;
 264         u32 status;
 265         int loop, handled = 0;
 266
 267         for (loop = 0; loop < MAX_IRQ_LOOP; loop++) {
 268                 status = cx_read(MO_PCI_INTSTAT) &
 269                         (core->pci_irqmask | PCI_INT_AUDINT);
 270                 if (0 == status)
 271                         goto out;
 272                 dprintk(3, "cx8801_irq loop %d/%d, status %x\n",
 273                         loop, MAX_IRQ_LOOP, status);
 274                 handled = 1;
 275                 cx_write(MO_PCI_INTSTAT, status);
 276
 277                 if (status & core->pci_irqmask)
 278                         cx88_core_irq(core, status);
 279                 if (status & PCI_INT_AUDINT)
 280                         cx8801_aud_irq(chip);
 281         }
 282
 283         if (MAX_IRQ_LOOP == loop) {
 284                 printk(KERN_ERR
 285                        "%s/1: IRQ loop detected, disabling interrupts\n",
 286                        core->name);
 287                 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT);
 288         }
 289
 290  out:
 291         return IRQ_RETVAL(handled);
 292 }
 293
 294 static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, int nr_pages)
 295 {
 296         struct cx88_audio_buffer *buf = chip->buf;
 297         struct page *pg;
 298         int i;
 299
 300         buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);
 301         if (NULL == buf->vaddr) {
 302                 dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages);
 303                 return -ENOMEM;
 304         }
 305
 306         dprintk(1, "vmalloc is at addr 0x%08lx, size=%d\n",
 307                                 (unsigned long)buf->vaddr,
 308                                 nr_pages << PAGE_SHIFT);
 309
 310         memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);
 311         buf->nr_pages = nr_pages;
 312
 313         buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));
 314         if (NULL == buf->sglist)
 315                 goto vzalloc_err;
 316
 317         sg_init_table(buf->sglist, buf->nr_pages);
 318         for (i = 0; i < buf->nr_pages; i++) {
 319                 pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);
 320                 if (NULL == pg)
 321                         goto vmalloc_to_page_err;
 322                 sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);
 323         }
 324         return 0;
 325
 326 vmalloc_to_page_err:
 327         vfree(buf->sglist);
 328         buf->sglist = NULL;
 329 vzalloc_err:
 330         vfree(buf->vaddr);
 331         buf->vaddr = NULL;
 332         return -ENOMEM;
 333 }
 334
 335 static int cx88_alsa_dma_map(struct cx88_audio_dev *dev)
 336 {
 337         struct cx88_audio_buffer *buf = dev->buf;
 338
 339         buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,
 340                         buf->nr_pages, PCI_DMA_FROMDEVICE);
 341
 342         if (0 == buf->sglen) {
 343                 pr_warn("%s: cx88_alsa_map_sg failed\n", __func__);
 344                 return -ENOMEM;
 345         }
 346         return 0;
 347 }
 348
 349 static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev)
 350 {
 351         struct cx88_audio_buffer *buf = dev->buf;
 352
 353         if (!buf->sglen)
 354                 return 0;
 355
 356         dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->sglen, PCI_DMA_FROMDEVICE);
 357         buf->sglen = 0;
 358         return 0;
 359 }
 360
 361 static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf)
 362 {
 363         vfree(buf->sglist);
 364         buf->sglist = NULL;
 365         vfree(buf->vaddr);
 366         buf->vaddr = NULL;
 367         return 0;
 368 }
 369
 370
 371 static int dsp_buffer_free(snd_cx88_card_t *chip)
 372 {
 373         struct cx88_riscmem *risc = &chip->buf->risc;
 374
 375         BUG_ON(!chip->dma_size);
 376
 377         dprintk(2,"Freeing buffer\n");
 378         cx88_alsa_dma_unmap(chip);
 379         cx88_alsa_dma_free(chip->buf);
 380         if (risc->cpu)
 381                 pci_free_consistent(chip->pci, risc->size, risc->cpu, risc->dma);
 382         kfree(chip->buf);
 383
 384         chip->buf = NULL;
 385
 386         return 0;
 387 }
 388
 389 /****************************************************************************
 390                                 ALSA PCM Interface
 391  ****************************************************************************/
 392
 393 /*
 394  * Digital hardware definition
 395  */
 396 #define DEFAULT_FIFO_SIZE       4096
 397 static const struct snd_pcm_hardware snd_cx88_digital_hw = {
 398         .info = SNDRV_PCM_INFO_MMAP |
 399                 SNDRV_PCM_INFO_INTERLEAVED |
 400                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 401                 SNDRV_PCM_INFO_MMAP_VALID,
 402         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 403
 404         .rates =                SNDRV_PCM_RATE_48000,
 405         .rate_min =             48000,
 406         .rate_max =             48000,
 407         .channels_min = 2,
 408         .channels_max = 2,
 409         /* Analog audio output will be full of clicks and pops if there
 410            are not exactly four lines in the SRAM FIFO buffer.  */
 411         .period_bytes_min = DEFAULT_FIFO_SIZE/4,
 412         .period_bytes_max = DEFAULT_FIFO_SIZE/4,
 413         .periods_min = 1,
 414         .periods_max = 1024,
 415         .buffer_bytes_max = (1024*1024),
 416 };
 417
 418 /*
 419  * audio pcm capture open callback
 420  */
 421 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream)
 422 {
 423         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 424         struct snd_pcm_runtime *runtime = substream->runtime;
 425         int err;
 426
 427         if (!chip) {
 428                 printk(KERN_ERR "BUG: cx88 can't find device struct."
 429                                 " Can't proceed with open\n");
 430                 return -ENODEV;
 431         }
 432
 433         err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_PERIODS);
 434         if (err < 0)
 435                 goto _error;
 436
 437         chip->substream = substream;
 438
 439         runtime->hw = snd_cx88_digital_hw;
 440
 441         if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) {
 442                 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4;
 443                 bpl &= ~7; /* must be multiple of 8 */
 444                 runtime->hw.period_bytes_min = bpl;
 445                 runtime->hw.period_bytes_max = bpl;
 446         }
 447
 448         return 0;
 449 _error:
 450         dprintk(1,"Error opening PCM!\n");
 451         return err;
 452 }
 453
 454 /*
 455  * audio close callback
 456  */
 457 static int snd_cx88_close(struct snd_pcm_substream *substream)
 458 {
 459         return 0;
 460 }
 461
 462 /*
 463  * hw_params callback
 464  */
 465 static int snd_cx88_hw_params(struct snd_pcm_substream * substream,
 466                               struct snd_pcm_hw_params * hw_params)
 467 {
 468         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 469
 470         struct cx88_audio_buffer *buf;
 471         int ret;
 472
 473         if (substream->runtime->dma_area) {
 474                 dsp_buffer_free(chip);
 475                 substream->runtime->dma_area = NULL;
 476         }
 477
 478         chip->period_size = params_period_bytes(hw_params);
 479         chip->num_periods = params_periods(hw_params);
 480         chip->dma_size = chip->period_size * params_periods(hw_params);
 481
 482         BUG_ON(!chip->dma_size);
 483         BUG_ON(chip->num_periods & (chip->num_periods-1));
 484
 485         buf = kzalloc(sizeof(*buf), GFP_KERNEL);
 486         if (NULL == buf)
 487                 return -ENOMEM;
 488
 489         chip->buf = buf;
 490         buf->bpl = chip->period_size;
 491
 492         ret = cx88_alsa_dma_init(chip,
 493                         (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT));
 494         if (ret < 0)
 495                 goto error;
 496
 497         ret = cx88_alsa_dma_map(chip);
 498         if (ret < 0)
 499                 goto error;
 500
 501         ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist,
 502                                    chip->period_size, chip->num_periods, 1);
 503         if (ret < 0)
 504                 goto error;
 505
 506         /* Loop back to start of program */
 507         buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);
 508         buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
 509
 510         substream->runtime->dma_area = chip->buf->vaddr;
 511         substream->runtime->dma_bytes = chip->dma_size;
 512         substream->runtime->dma_addr = 0;
 513         return 0;
 514
 515 error:
 516         kfree(buf);
 517         return ret;
 518 }
 519
 520 /*
 521  * hw free callback
 522  */
 523 static int snd_cx88_hw_free(struct snd_pcm_substream * substream)
 524 {
 525
 526         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 527
 528         if (substream->runtime->dma_area) {
 529                 dsp_buffer_free(chip);
 530                 substream->runtime->dma_area = NULL;
 531         }
 532
 533         return 0;
 534 }
 535
 536 /*
 537  * prepare callback
 538  */
 539 static int snd_cx88_prepare(struct snd_pcm_substream *substream)
 540 {
 541         return 0;
 542 }
 543
 544 /*
 545  * trigger callback
 546  */
 547 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd)
 548 {
 549         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 550         int err;
 551
 552         /* Local interrupts are already disabled by ALSA */
 553         spin_lock(&chip->reg_lock);
 554
 555         switch (cmd) {
 556         case SNDRV_PCM_TRIGGER_START:
 557                 err=_cx88_start_audio_dma(chip);
 558                 break;
 559         case SNDRV_PCM_TRIGGER_STOP:
 560                 err=_cx88_stop_audio_dma(chip);
 561                 break;
 562         default:
 563                 err=-EINVAL;
 564                 break;
 565         }
 566
 567         spin_unlock(&chip->reg_lock);
 568
 569         return err;
 570 }
 571
 572 /*
 573  * pointer callback
 574  */
 575 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream)
 576 {
 577         snd_cx88_card_t *chip = snd_pcm_substream_chip(substream);
 578         struct snd_pcm_runtime *runtime = substream->runtime;
 579         u16 count;
 580
 581         count = atomic_read(&chip->count);
 582
 583 //      dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__,
 584 //              count, new, count & (runtime->periods-1),
 585 //              runtime->period_size * (count & (runtime->periods-1)));
 586         return runtime->period_size * (count & (runtime->periods-1));
 587 }
 588
 589 /*
 590  * page callback (needed for mmap)
 591  */
 592 static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
 593                                 unsigned long offset)
 594 {
 595         void *pageptr = substream->runtime->dma_area + offset;
 596         return vmalloc_to_page(pageptr);
 597 }
 598
 599 /*
 600  * operators
 601  */
 602 static struct snd_pcm_ops snd_cx88_pcm_ops = {
 603         .open = snd_cx88_pcm_open,
 604         .close = snd_cx88_close,
 605         .ioctl = snd_pcm_lib_ioctl,
 606         .hw_params = snd_cx88_hw_params,
 607         .hw_free = snd_cx88_hw_free,
 608         .prepare = snd_cx88_prepare,
 609         .trigger = snd_cx88_card_trigger,
 610         .pointer = snd_cx88_pointer,
 611         .page = snd_cx88_page,
 612 };
 613
 614 /*
 615  * create a PCM device
 616  */
 617 static int snd_cx88_pcm(snd_cx88_card_t *chip, int device, const char *name)
 618 {
 619         int err;
 620         struct snd_pcm *pcm;
 621
 622         err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm);
 623         if (err < 0)
 624                 return err;
 625         pcm->private_data = chip;
 626         strcpy(pcm->name, name);
 627         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops);
 628
 629         return 0;
 630 }
 631
 632 /****************************************************************************
 633                                 CONTROL INTERFACE
 634  ****************************************************************************/
 635 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol,
 636                                 struct snd_ctl_elem_info *info)
 637 {
 638         info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 639         info->count = 2;
 640         info->value.integer.min = 0;
 641         info->value.integer.max = 0x3f;
 642
 643         return 0;
 644 }
 645
 646 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol,
 647                                struct snd_ctl_elem_value *value)
 648 {
 649         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 650         struct cx88_core *core=chip->core;
 651         int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f),
 652             bal = cx_read(AUD_BAL_CTL);
 653
 654         value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol;
 655         vol -= (bal & 0x3f);
 656         value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol;
 657
 658         return 0;
 659 }
 660
 661 static void snd_cx88_wm8775_volume_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         int left = value->value.integer.value[0];
 667         int right = value->value.integer.value[1];
 668         int v, b;
 669
 670         /* Pass volume & balance onto any WM8775 */
 671         if (left >= right) {
 672                 v = left << 10;
 673                 b = left ? (0x8000 * right) / left : 0x8000;
 674         } else {
 675                 v = right << 10;
 676                 b = right ? 0xffff - (0x8000 * left) / right : 0x8000;
 677         }
 678         wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v);
 679         wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b);
 680 }
 681
 682 /* OK - TODO: test it */
 683 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol,
 684                                struct snd_ctl_elem_value *value)
 685 {
 686         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 687         struct cx88_core *core=chip->core;
 688         int left, right, v, b;
 689         int changed = 0;
 690         u32 old;
 691
 692         if (core->sd_wm8775)
 693                 snd_cx88_wm8775_volume_put(kcontrol, value);
 694
 695         left = value->value.integer.value[0] & 0x3f;
 696         right = value->value.integer.value[1] & 0x3f;
 697         b = right - left;
 698         if (b < 0) {
 699                 v = 0x3f - left;
 700                 b = (-b) | 0x40;
 701         } else {
 702                 v = 0x3f - right;
 703         }
 704         /* Do we really know this will always be called with IRQs on? */
 705         spin_lock_irq(&chip->reg_lock);
 706         old = cx_read(AUD_VOL_CTL);
 707         if (v != (old & 0x3f)) {
 708                 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v);
 709                 changed = 1;
 710         }
 711         if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) {
 712                 cx_write(AUD_BAL_CTL, b);
 713                 changed = 1;
 714         }
 715         spin_unlock_irq(&chip->reg_lock);
 716
 717         return changed;
 718 }
 719
 720 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0);
 721
 722 static const struct snd_kcontrol_new snd_cx88_volume = {
 723         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 724         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
 725                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,
 726         .name = "Analog-TV Volume",
 727         .info = snd_cx88_volume_info,
 728         .get = snd_cx88_volume_get,
 729         .put = snd_cx88_volume_put,
 730         .tlv.p = snd_cx88_db_scale,
 731 };
 732
 733 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol,
 734                                struct snd_ctl_elem_value *value)
 735 {
 736         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 737         struct cx88_core *core = chip->core;
 738         u32 bit = kcontrol->private_value;
 739
 740         value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit);
 741         return 0;
 742 }
 743
 744 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol,
 745                                        struct snd_ctl_elem_value *value)
 746 {
 747         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 748         struct cx88_core *core = chip->core;
 749         u32 bit = kcontrol->private_value;
 750         int ret = 0;
 751         u32 vol;
 752
 753         spin_lock_irq(&chip->reg_lock);
 754         vol = cx_read(AUD_VOL_CTL);
 755         if (value->value.integer.value[0] != !(vol & bit)) {
 756                 vol ^= bit;
 757                 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol);
 758                 /* Pass mute onto any WM8775 */
 759                 if (core->sd_wm8775 && ((1<<6) == bit))
 760                         wm8775_s_ctrl(core, V4L2_CID_AUDIO_MUTE, 0 != (vol & bit));
 761                 ret = 1;
 762         }
 763         spin_unlock_irq(&chip->reg_lock);
 764         return ret;
 765 }
 766
 767 static const struct snd_kcontrol_new snd_cx88_dac_switch = {
 768         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 769         .name = "Audio-Out Switch",
 770         .info = snd_ctl_boolean_mono_info,
 771         .get = snd_cx88_switch_get,
 772         .put = snd_cx88_switch_put,
 773         .private_value = (1<<8),
 774 };
 775
 776 static const struct snd_kcontrol_new snd_cx88_source_switch = {
 777         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 778         .name = "Analog-TV Switch",
 779         .info = snd_ctl_boolean_mono_info,
 780         .get = snd_cx88_switch_get,
 781         .put = snd_cx88_switch_put,
 782         .private_value = (1<<6),
 783 };
 784
 785 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol,
 786                                struct snd_ctl_elem_value *value)
 787 {
 788         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 789         struct cx88_core *core = chip->core;
 790         s32 val;
 791
 792         val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS);
 793         value->value.integer.value[0] = val ? 1 : 0;
 794         return 0;
 795 }
 796
 797 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol,
 798                                        struct snd_ctl_elem_value *value)
 799 {
 800         snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol);
 801         struct cx88_core *core = chip->core;
 802         struct v4l2_control client_ctl;
 803
 804         memset(&client_ctl, 0, sizeof(client_ctl));
 805         client_ctl.value = 0 != value->value.integer.value[0];
 806         client_ctl.id = V4L2_CID_AUDIO_LOUDNESS;
 807         call_hw(core, WM8775_GID, core, s_ctrl, &client_ctl);
 808
 809         return 0;
 810 }
 811
 812 static struct snd_kcontrol_new snd_cx88_alc_switch = {
 813         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 814         .name = "Line-In ALC Switch",
 815         .info = snd_ctl_boolean_mono_info,
 816         .get = snd_cx88_alc_get,
 817         .put = snd_cx88_alc_put,
 818 };
 819
 820 /****************************************************************************
 821                         Basic Flow for Sound Devices
 822  ****************************************************************************/
 823
 824 /*
 825  * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio
 826  * Only boards with eeprom and byte 1 at eeprom=1 have it
 827  */
 828
 829 static const struct pci_device_id cx88_audio_pci_tbl[] = {
 830         {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 831         {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
 832         {0, }
 833 };
 834 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl);
 835
 836 /*
 837  * Chip-specific destructor
 838  */
 839
 840 static int snd_cx88_free(snd_cx88_card_t *chip)
 841 {
 842
 843         if (chip->irq >= 0)
 844                 free_irq(chip->irq, chip);
 845
 846         cx88_core_put(chip->core,chip->pci);
 847
 848         pci_disable_device(chip->pci);
 849         return 0;
 850 }
 851
 852 /*
 853  * Component Destructor
 854  */
 855 static void snd_cx88_dev_free(struct snd_card * card)
 856 {
 857         snd_cx88_card_t *chip = card->private_data;
 858
 859         snd_cx88_free(chip);
 860 }
 861
 862
 863 /*
 864  * Alsa Constructor - Component probe
 865  */
 866
 867 static int devno;
 868 static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci,
 869                            snd_cx88_card_t **rchip,
 870                            struct cx88_core **core_ptr)
 871 {
 872         snd_cx88_card_t   *chip;
 873         struct cx88_core  *core;
 874         int               err;
 875         unsigned char     pci_lat;
 876
 877         *rchip = NULL;
 878
 879         err = pci_enable_device(pci);
 880         if (err < 0)
 881                 return err;
 882
 883         pci_set_master(pci);
 884
 885         chip = card->private_data;
 886
 887         core = cx88_core_get(pci);
 888         if (NULL == core) {
 889                 err = -EINVAL;
 890                 return err;
 891         }
 892
 893         if (!pci_set_dma_mask(pci,DMA_BIT_MASK(32))) {
 894                 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name);
 895                 err = -EIO;
 896                 cx88_core_put(core, pci);
 897                 return err;
 898         }
 899
 900
 901         /* pci init */
 902         chip->card = card;
 903         chip->pci = pci;
 904         chip->irq = -1;
 905         spin_lock_init(&chip->reg_lock);
 906
 907         chip->core = core;
 908
 909         /* get irq */
 910         err = request_irq(chip->pci->irq, cx8801_irq,
 911                           IRQF_SHARED, chip->core->name, chip);
 912         if (err < 0) {
 913                 dprintk(0, "%s: can't get IRQ %d\n",
 914                        chip->core->name, chip->pci->irq);
 915                 return err;
 916         }
 917
 918         /* print pci info */
 919         pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat);
 920
 921         dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, "
 922                "latency: %d, mmio: 0x%llx\n", core->name, devno,
 923                pci_name(pci), pci->revision, pci->irq,
 924                pci_lat, (unsigned long long)pci_resource_start(pci,0));
 925
 926         chip->irq = pci->irq;
 927         synchronize_irq(chip->irq);
 928
 929         *rchip = chip;
 930         *core_ptr = core;
 931
 932         return 0;
 933 }
 934
 935 static int cx88_audio_initdev(struct pci_dev *pci,
 936                               const struct pci_device_id *pci_id)
 937 {
 938         struct snd_card  *card;
 939         snd_cx88_card_t  *chip;
 940         struct cx88_core *core = NULL;
 941         int              err;
 942
 943         if (devno >= SNDRV_CARDS)
 944                 return (-ENODEV);
 945
 946         if (!enable[devno]) {
 947                 ++devno;
 948                 return (-ENOENT);
 949         }
 950
 951         err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
 952                            sizeof(snd_cx88_card_t), &card);
 953         if (err < 0)
 954                 return err;
 955
 956         card->private_free = snd_cx88_dev_free;
 957
 958         err = snd_cx88_create(card, pci, &chip, &core);
 959         if (err < 0)
 960                 goto error;
 961
 962         err = snd_cx88_pcm(chip, 0, "CX88 Digital");
 963         if (err < 0)
 964                 goto error;
 965
 966         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip));
 967         if (err < 0)
 968                 goto error;
 969         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip));
 970         if (err < 0)
 971                 goto error;
 972         err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip));
 973         if (err < 0)
 974                 goto error;
 975
 976         /* If there's a wm8775 then add a Line-In ALC switch */
 977         if (core->sd_wm8775)
 978                 snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip));
 979
 980         strcpy (card->driver, "CX88x");
 981         sprintf(card->shortname, "Conexant CX%x", pci->device);
 982         sprintf(card->longname, "%s at %#llx",
 983                 card->shortname,(unsigned long long)pci_resource_start(pci, 0));
 984         strcpy (card->mixername, "CX88");
 985
 986         dprintk (0, "%s/%i: ALSA support for cx2388x boards\n",
 987                card->driver,devno);
 988
 989         err = snd_card_register(card);
 990         if (err < 0)
 991                 goto error;
 992         pci_set_drvdata(pci,card);
 993
 994         devno++;
 995         return 0;
 996
 997 error:
 998         snd_card_free(card);
 999         return err;
1000 }
1001 /*
1002  * ALSA destructor
1003  */
1004 static void cx88_audio_finidev(struct pci_dev *pci)
1005 {
1006         struct snd_card *card = pci_get_drvdata(pci);
1007
1008         snd_card_free(card);
1009
1010         devno--;
1011 }
1012
1013 /*
1014  * PCI driver definition
1015  */
1016
1017 static struct pci_driver cx88_audio_pci_driver = {
1018         .name     = "cx88_audio",
1019         .id_table = cx88_audio_pci_tbl,
1020         .probe    = cx88_audio_initdev,
1021         .remove   = cx88_audio_finidev,
1022 };
1023
1024 module_pci_driver(cx88_audio_pci_driver);