1 // SPDX-License-Identifier: GPL-2.0-or-later 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@kernel.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 13 #include "cx88.h" 14 #include "cx88-reg.h" 15 16 #include <linux/module.h> 17 #include <linux/init.h> 18 #include <linux/delay.h> 19 #include <linux/device.h> 20 #include <linux/interrupt.h> 21 #include <linux/vmalloc.h> 22 #include <linux/dma-mapping.h> 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 26 #include <sound/core.h> 27 #include <sound/pcm.h> 28 #include <sound/pcm_params.h> 29 #include <sound/control.h> 30 #include <sound/initval.h> 31 #include <sound/tlv.h> 32 #include <media/i2c/wm8775.h> 33 34 #define dprintk(level, fmt, arg...) do { \ 35 if (debug + 1 > level) \ 36 printk(KERN_DEBUG pr_fmt("%s: alsa: " fmt), \ 37 chip->core->name, ##arg); \ 38 } while (0) 39 40 /* 41 * Data type declarations - Can be moded to a header file later 42 */ 43 44 struct cx88_audio_buffer { 45 unsigned int bpl; 46 struct cx88_riscmem risc; 47 void *vaddr; 48 struct scatterlist *sglist; 49 int sglen; 50 int nr_pages; 51 }; 52 53 struct cx88_audio_dev { 54 struct cx88_core *core; 55 struct cx88_dmaqueue q; 56 57 /* pci i/o */ 58 struct pci_dev *pci; 59 60 /* audio controls */ 61 int irq; 62 63 struct snd_card *card; 64 65 spinlock_t reg_lock; 66 atomic_t count; 67 68 unsigned int dma_size; 69 unsigned int period_size; 70 unsigned int num_periods; 71 72 struct cx88_audio_buffer *buf; 73 74 struct snd_pcm_substream *substream; 75 }; 76 77 /* 78 * Module global static vars 79 */ 80 81 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 82 static const char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 83 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 84 85 module_param_array(enable, bool, NULL, 0444); 86 MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled."); 87 88 module_param_array(index, int, NULL, 0444); 89 MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s)."); 90 91 /* 92 * Module macros 93 */ 94 95 MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards"); 96 MODULE_AUTHOR("Ricardo Cerqueira"); 97 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@kernel.org>"); 98 MODULE_LICENSE("GPL v2"); 99 MODULE_VERSION(CX88_VERSION); 100 101 MODULE_SUPPORTED_DEVICE("{{Conexant,23881},{{Conexant,23882},{{Conexant,23883}"); 102 static unsigned int debug; 103 module_param(debug, int, 0644); 104 MODULE_PARM_DESC(debug, "enable debug messages"); 105 106 /* 107 * Module specific functions 108 */ 109 110 /* 111 * BOARD Specific: Sets audio DMA 112 */ 113 114 static int _cx88_start_audio_dma(struct cx88_audio_dev *chip) 115 { 116 struct cx88_audio_buffer *buf = chip->buf; 117 struct cx88_core *core = chip->core; 118 const struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25]; 119 120 /* Make sure RISC/FIFO are off before changing FIFO/RISC settings */ 121 cx_clear(MO_AUD_DMACNTRL, 0x11); 122 123 /* setup fifo + format - out channel */ 124 cx88_sram_channel_setup(chip->core, audio_ch, buf->bpl, buf->risc.dma); 125 126 /* sets bpl size */ 127 cx_write(MO_AUDD_LNGTH, buf->bpl); 128 129 /* reset counter */ 130 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET); 131 atomic_set(&chip->count, 0); 132 133 dprintk(1, 134 "Start audio DMA, %d B/line, %d lines/FIFO, %d periods, %d byte buffer\n", 135 buf->bpl, cx_read(audio_ch->cmds_start + 8) >> 1, 136 chip->num_periods, buf->bpl * chip->num_periods); 137 138 /* Enables corresponding bits at AUD_INT_STAT */ 139 cx_write(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | 140 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); 141 142 /* Clean any pending interrupt bits already set */ 143 cx_write(MO_AUD_INTSTAT, ~0); 144 145 /* enable audio irqs */ 146 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | PCI_INT_AUDINT); 147 148 /* start dma */ 149 150 /* Enables Risc Processor */ 151 cx_set(MO_DEV_CNTRL2, (1 << 5)); 152 /* audio downstream FIFO and RISC enable */ 153 cx_set(MO_AUD_DMACNTRL, 0x11); 154 155 if (debug) 156 cx88_sram_channel_dump(chip->core, audio_ch); 157 158 return 0; 159 } 160 161 /* 162 * BOARD Specific: Resets audio DMA 163 */ 164 static int _cx88_stop_audio_dma(struct cx88_audio_dev *chip) 165 { 166 struct cx88_core *core = chip->core; 167 168 dprintk(1, "Stopping audio DMA\n"); 169 170 /* stop dma */ 171 cx_clear(MO_AUD_DMACNTRL, 0x11); 172 173 /* disable irqs */ 174 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT); 175 cx_clear(MO_AUD_INTMSK, AUD_INT_OPC_ERR | AUD_INT_DN_SYNC | 176 AUD_INT_DN_RISCI2 | AUD_INT_DN_RISCI1); 177 178 if (debug) 179 cx88_sram_channel_dump(chip->core, 180 &cx88_sram_channels[SRAM_CH25]); 181 182 return 0; 183 } 184 185 #define MAX_IRQ_LOOP 50 186 187 /* 188 * BOARD Specific: IRQ dma bits 189 */ 190 static const char *cx88_aud_irqs[32] = { 191 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ 192 NULL, /* reserved */ 193 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ 194 NULL, /* reserved */ 195 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ 196 NULL, /* reserved */ 197 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ 198 NULL, /* reserved */ 199 "opc_err", "par_err", "rip_err", /* 16-18 */ 200 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ 201 }; 202 203 /* 204 * BOARD Specific: Threats IRQ audio specific calls 205 */ 206 static void cx8801_aud_irq(struct cx88_audio_dev *chip) 207 { 208 struct cx88_core *core = chip->core; 209 u32 status, mask; 210 211 status = cx_read(MO_AUD_INTSTAT); 212 mask = cx_read(MO_AUD_INTMSK); 213 if (0 == (status & mask)) 214 return; 215 cx_write(MO_AUD_INTSTAT, status); 216 if (debug > 1 || (status & mask & ~0xff)) 217 cx88_print_irqbits("irq aud", 218 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs), 219 status, mask); 220 /* risc op code error */ 221 if (status & AUD_INT_OPC_ERR) { 222 pr_warn("Audio risc op code error\n"); 223 cx_clear(MO_AUD_DMACNTRL, 0x11); 224 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]); 225 } 226 if (status & AUD_INT_DN_SYNC) { 227 dprintk(1, "Downstream sync error\n"); 228 cx_write(MO_AUDD_GPCNTRL, GP_COUNT_CONTROL_RESET); 229 return; 230 } 231 /* risc1 downstream */ 232 if (status & AUD_INT_DN_RISCI1) { 233 atomic_set(&chip->count, cx_read(MO_AUDD_GPCNT)); 234 snd_pcm_period_elapsed(chip->substream); 235 } 236 /* FIXME: Any other status should deserve a special handling? */ 237 } 238 239 /* 240 * BOARD Specific: Handles IRQ calls 241 */ 242 static irqreturn_t cx8801_irq(int irq, void *dev_id) 243 { 244 struct cx88_audio_dev *chip = dev_id; 245 struct cx88_core *core = chip->core; 246 u32 status; 247 int loop, handled = 0; 248 249 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { 250 status = cx_read(MO_PCI_INTSTAT) & 251 (core->pci_irqmask | PCI_INT_AUDINT); 252 if (status == 0) 253 goto out; 254 dprintk(3, "cx8801_irq loop %d/%d, status %x\n", 255 loop, MAX_IRQ_LOOP, status); 256 handled = 1; 257 cx_write(MO_PCI_INTSTAT, status); 258 259 if (status & core->pci_irqmask) 260 cx88_core_irq(core, status); 261 if (status & PCI_INT_AUDINT) 262 cx8801_aud_irq(chip); 263 } 264 265 if (loop == MAX_IRQ_LOOP) { 266 pr_err("IRQ loop detected, disabling interrupts\n"); 267 cx_clear(MO_PCI_INTMSK, PCI_INT_AUDINT); 268 } 269 270 out: 271 return IRQ_RETVAL(handled); 272 } 273 274 static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, int nr_pages) 275 { 276 struct cx88_audio_buffer *buf = chip->buf; 277 struct page *pg; 278 int i; 279 280 buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT); 281 if (!buf->vaddr) { 282 dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages); 283 return -ENOMEM; 284 } 285 286 dprintk(1, "vmalloc is at addr %p, size=%d\n", 287 buf->vaddr, nr_pages << PAGE_SHIFT); 288 289 memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); 290 buf->nr_pages = nr_pages; 291 292 buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); 293 if (!buf->sglist) 294 goto vzalloc_err; 295 296 sg_init_table(buf->sglist, buf->nr_pages); 297 for (i = 0; i < buf->nr_pages; i++) { 298 pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE); 299 if (!pg) 300 goto vmalloc_to_page_err; 301 sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0); 302 } 303 return 0; 304 305 vmalloc_to_page_err: 306 vfree(buf->sglist); 307 buf->sglist = NULL; 308 vzalloc_err: 309 vfree(buf->vaddr); 310 buf->vaddr = NULL; 311 return -ENOMEM; 312 } 313 314 static int cx88_alsa_dma_map(struct cx88_audio_dev *dev) 315 { 316 struct cx88_audio_buffer *buf = dev->buf; 317 318 buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist, 319 buf->nr_pages, PCI_DMA_FROMDEVICE); 320 321 if (buf->sglen == 0) { 322 pr_warn("%s: cx88_alsa_map_sg failed\n", __func__); 323 return -ENOMEM; 324 } 325 return 0; 326 } 327 328 static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev) 329 { 330 struct cx88_audio_buffer *buf = dev->buf; 331 332 if (!buf->sglen) 333 return 0; 334 335 dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->sglen, 336 PCI_DMA_FROMDEVICE); 337 buf->sglen = 0; 338 return 0; 339 } 340 341 static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf) 342 { 343 vfree(buf->sglist); 344 buf->sglist = NULL; 345 vfree(buf->vaddr); 346 buf->vaddr = NULL; 347 return 0; 348 } 349 350 static int dsp_buffer_free(struct cx88_audio_dev *chip) 351 { 352 struct cx88_riscmem *risc = &chip->buf->risc; 353 354 WARN_ON(!chip->dma_size); 355 356 dprintk(2, "Freeing buffer\n"); 357 cx88_alsa_dma_unmap(chip); 358 cx88_alsa_dma_free(chip->buf); 359 if (risc->cpu) 360 pci_free_consistent(chip->pci, risc->size, 361 risc->cpu, risc->dma); 362 kfree(chip->buf); 363 364 chip->buf = NULL; 365 366 return 0; 367 } 368 369 /* 370 * ALSA PCM Interface 371 */ 372 373 /* 374 * Digital hardware definition 375 */ 376 #define DEFAULT_FIFO_SIZE 4096 377 static const struct snd_pcm_hardware snd_cx88_digital_hw = { 378 .info = SNDRV_PCM_INFO_MMAP | 379 SNDRV_PCM_INFO_INTERLEAVED | 380 SNDRV_PCM_INFO_BLOCK_TRANSFER | 381 SNDRV_PCM_INFO_MMAP_VALID, 382 .formats = SNDRV_PCM_FMTBIT_S16_LE, 383 384 .rates = SNDRV_PCM_RATE_48000, 385 .rate_min = 48000, 386 .rate_max = 48000, 387 .channels_min = 2, 388 .channels_max = 2, 389 /* 390 * Analog audio output will be full of clicks and pops if there 391 * are not exactly four lines in the SRAM FIFO buffer. 392 */ 393 .period_bytes_min = DEFAULT_FIFO_SIZE / 4, 394 .period_bytes_max = DEFAULT_FIFO_SIZE / 4, 395 .periods_min = 1, 396 .periods_max = 1024, 397 .buffer_bytes_max = (1024 * 1024), 398 }; 399 400 /* 401 * audio pcm capture open callback 402 */ 403 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream) 404 { 405 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 406 struct snd_pcm_runtime *runtime = substream->runtime; 407 int err; 408 409 if (!chip) { 410 pr_err("BUG: cx88 can't find device struct. Can't proceed with open\n"); 411 return -ENODEV; 412 } 413 414 err = snd_pcm_hw_constraint_pow2(runtime, 0, 415 SNDRV_PCM_HW_PARAM_PERIODS); 416 if (err < 0) 417 goto _error; 418 419 chip->substream = substream; 420 421 runtime->hw = snd_cx88_digital_hw; 422 423 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) { 424 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4; 425 426 bpl &= ~7; /* must be multiple of 8 */ 427 runtime->hw.period_bytes_min = bpl; 428 runtime->hw.period_bytes_max = bpl; 429 } 430 431 return 0; 432 _error: 433 dprintk(1, "Error opening PCM!\n"); 434 return err; 435 } 436 437 /* 438 * audio close callback 439 */ 440 static int snd_cx88_close(struct snd_pcm_substream *substream) 441 { 442 return 0; 443 } 444 445 /* 446 * hw_params callback 447 */ 448 static int snd_cx88_hw_params(struct snd_pcm_substream *substream, 449 struct snd_pcm_hw_params *hw_params) 450 { 451 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 452 453 struct cx88_audio_buffer *buf; 454 int ret; 455 456 if (substream->runtime->dma_area) { 457 dsp_buffer_free(chip); 458 substream->runtime->dma_area = NULL; 459 } 460 461 chip->period_size = params_period_bytes(hw_params); 462 chip->num_periods = params_periods(hw_params); 463 chip->dma_size = chip->period_size * params_periods(hw_params); 464 465 WARN_ON(!chip->dma_size); 466 WARN_ON(chip->num_periods & (chip->num_periods - 1)); 467 468 buf = kzalloc(sizeof(*buf), GFP_KERNEL); 469 if (!buf) 470 return -ENOMEM; 471 472 chip->buf = buf; 473 buf->bpl = chip->period_size; 474 475 ret = cx88_alsa_dma_init(chip, 476 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); 477 if (ret < 0) 478 goto error; 479 480 ret = cx88_alsa_dma_map(chip); 481 if (ret < 0) 482 goto error; 483 484 ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist, 485 chip->period_size, chip->num_periods, 1); 486 if (ret < 0) 487 goto error; 488 489 /* Loop back to start of program */ 490 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); 491 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 492 493 substream->runtime->dma_area = chip->buf->vaddr; 494 substream->runtime->dma_bytes = chip->dma_size; 495 substream->runtime->dma_addr = 0; 496 return 0; 497 498 error: 499 kfree(buf); 500 return ret; 501 } 502 503 /* 504 * hw free callback 505 */ 506 static int snd_cx88_hw_free(struct snd_pcm_substream *substream) 507 { 508 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 509 510 if (substream->runtime->dma_area) { 511 dsp_buffer_free(chip); 512 substream->runtime->dma_area = NULL; 513 } 514 515 return 0; 516 } 517 518 /* 519 * prepare callback 520 */ 521 static int snd_cx88_prepare(struct snd_pcm_substream *substream) 522 { 523 return 0; 524 } 525 526 /* 527 * trigger callback 528 */ 529 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd) 530 { 531 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 532 int err; 533 534 /* Local interrupts are already disabled by ALSA */ 535 spin_lock(&chip->reg_lock); 536 537 switch (cmd) { 538 case SNDRV_PCM_TRIGGER_START: 539 err = _cx88_start_audio_dma(chip); 540 break; 541 case SNDRV_PCM_TRIGGER_STOP: 542 err = _cx88_stop_audio_dma(chip); 543 break; 544 default: 545 err = -EINVAL; 546 break; 547 } 548 549 spin_unlock(&chip->reg_lock); 550 551 return err; 552 } 553 554 /* 555 * pointer callback 556 */ 557 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream) 558 { 559 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 560 struct snd_pcm_runtime *runtime = substream->runtime; 561 u16 count; 562 563 count = atomic_read(&chip->count); 564 565 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__, 566 // count, new, count & (runtime->periods-1), 567 // runtime->period_size * (count & (runtime->periods-1))); 568 return runtime->period_size * (count & (runtime->periods - 1)); 569 } 570 571 /* 572 * page callback (needed for mmap) 573 */ 574 static struct page *snd_cx88_page(struct snd_pcm_substream *substream, 575 unsigned long offset) 576 { 577 void *pageptr = substream->runtime->dma_area + offset; 578 579 return vmalloc_to_page(pageptr); 580 } 581 582 /* 583 * operators 584 */ 585 static const struct snd_pcm_ops snd_cx88_pcm_ops = { 586 .open = snd_cx88_pcm_open, 587 .close = snd_cx88_close, 588 .hw_params = snd_cx88_hw_params, 589 .hw_free = snd_cx88_hw_free, 590 .prepare = snd_cx88_prepare, 591 .trigger = snd_cx88_card_trigger, 592 .pointer = snd_cx88_pointer, 593 .page = snd_cx88_page, 594 }; 595 596 /* 597 * create a PCM device 598 */ 599 static int snd_cx88_pcm(struct cx88_audio_dev *chip, int device, 600 const char *name) 601 { 602 int err; 603 struct snd_pcm *pcm; 604 605 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); 606 if (err < 0) 607 return err; 608 pcm->private_data = chip; 609 strscpy(pcm->name, name, sizeof(pcm->name)); 610 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops); 611 612 return 0; 613 } 614 615 /* 616 * CONTROL INTERFACE 617 */ 618 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol, 619 struct snd_ctl_elem_info *info) 620 { 621 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 622 info->count = 2; 623 info->value.integer.min = 0; 624 info->value.integer.max = 0x3f; 625 626 return 0; 627 } 628 629 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol, 630 struct snd_ctl_elem_value *value) 631 { 632 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 633 struct cx88_core *core = chip->core; 634 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f), 635 bal = cx_read(AUD_BAL_CTL); 636 637 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol; 638 vol -= (bal & 0x3f); 639 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol; 640 641 return 0; 642 } 643 644 static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol, 645 struct snd_ctl_elem_value *value) 646 { 647 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 648 struct cx88_core *core = chip->core; 649 u16 left = value->value.integer.value[0]; 650 u16 right = value->value.integer.value[1]; 651 int v, b; 652 653 /* Pass volume & balance onto any WM8775 */ 654 if (left >= right) { 655 v = left << 10; 656 b = left ? (0x8000 * right) / left : 0x8000; 657 } else { 658 v = right << 10; 659 b = right ? 0xffff - (0x8000 * left) / right : 0x8000; 660 } 661 wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v); 662 wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b); 663 } 664 665 /* OK - TODO: test it */ 666 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol, 667 struct snd_ctl_elem_value *value) 668 { 669 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 670 struct cx88_core *core = chip->core; 671 int left, right, v, b; 672 int changed = 0; 673 u32 old; 674 675 if (core->sd_wm8775) 676 snd_cx88_wm8775_volume_put(kcontrol, value); 677 678 left = value->value.integer.value[0] & 0x3f; 679 right = value->value.integer.value[1] & 0x3f; 680 b = right - left; 681 if (b < 0) { 682 v = 0x3f - left; 683 b = (-b) | 0x40; 684 } else { 685 v = 0x3f - right; 686 } 687 /* Do we really know this will always be called with IRQs on? */ 688 spin_lock_irq(&chip->reg_lock); 689 old = cx_read(AUD_VOL_CTL); 690 if (v != (old & 0x3f)) { 691 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v); 692 changed = 1; 693 } 694 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) { 695 cx_write(AUD_BAL_CTL, b); 696 changed = 1; 697 } 698 spin_unlock_irq(&chip->reg_lock); 699 700 return changed; 701 } 702 703 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0); 704 705 static const struct snd_kcontrol_new snd_cx88_volume = { 706 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 707 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | 708 SNDRV_CTL_ELEM_ACCESS_TLV_READ, 709 .name = "Analog-TV Volume", 710 .info = snd_cx88_volume_info, 711 .get = snd_cx88_volume_get, 712 .put = snd_cx88_volume_put, 713 .tlv.p = snd_cx88_db_scale, 714 }; 715 716 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol, 717 struct snd_ctl_elem_value *value) 718 { 719 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 720 struct cx88_core *core = chip->core; 721 u32 bit = kcontrol->private_value; 722 723 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit); 724 return 0; 725 } 726 727 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol, 728 struct snd_ctl_elem_value *value) 729 { 730 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 731 struct cx88_core *core = chip->core; 732 u32 bit = kcontrol->private_value; 733 int ret = 0; 734 u32 vol; 735 736 spin_lock_irq(&chip->reg_lock); 737 vol = cx_read(AUD_VOL_CTL); 738 if (value->value.integer.value[0] != !(vol & bit)) { 739 vol ^= bit; 740 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol); 741 /* Pass mute onto any WM8775 */ 742 if (core->sd_wm8775 && ((1 << 6) == bit)) 743 wm8775_s_ctrl(core, 744 V4L2_CID_AUDIO_MUTE, 0 != (vol & bit)); 745 ret = 1; 746 } 747 spin_unlock_irq(&chip->reg_lock); 748 return ret; 749 } 750 751 static const struct snd_kcontrol_new snd_cx88_dac_switch = { 752 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 753 .name = "Audio-Out Switch", 754 .info = snd_ctl_boolean_mono_info, 755 .get = snd_cx88_switch_get, 756 .put = snd_cx88_switch_put, 757 .private_value = (1 << 8), 758 }; 759 760 static const struct snd_kcontrol_new snd_cx88_source_switch = { 761 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 762 .name = "Analog-TV Switch", 763 .info = snd_ctl_boolean_mono_info, 764 .get = snd_cx88_switch_get, 765 .put = snd_cx88_switch_put, 766 .private_value = (1 << 6), 767 }; 768 769 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol, 770 struct snd_ctl_elem_value *value) 771 { 772 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 773 struct cx88_core *core = chip->core; 774 s32 val; 775 776 val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS); 777 value->value.integer.value[0] = val ? 1 : 0; 778 return 0; 779 } 780 781 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol, 782 struct snd_ctl_elem_value *value) 783 { 784 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 785 struct cx88_core *core = chip->core; 786 787 wm8775_s_ctrl(core, V4L2_CID_AUDIO_LOUDNESS, 788 value->value.integer.value[0] != 0); 789 return 0; 790 } 791 792 static const struct snd_kcontrol_new snd_cx88_alc_switch = { 793 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 794 .name = "Line-In ALC Switch", 795 .info = snd_ctl_boolean_mono_info, 796 .get = snd_cx88_alc_get, 797 .put = snd_cx88_alc_put, 798 }; 799 800 /* 801 * Basic Flow for Sound Devices 802 */ 803 804 /* 805 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio 806 * Only boards with eeprom and byte 1 at eeprom=1 have it 807 */ 808 809 static const struct pci_device_id cx88_audio_pci_tbl[] = { 810 {0x14f1, 0x8801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 811 {0x14f1, 0x8811, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 812 {0, } 813 }; 814 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl); 815 816 /* 817 * Chip-specific destructor 818 */ 819 820 static int snd_cx88_free(struct cx88_audio_dev *chip) 821 { 822 if (chip->irq >= 0) 823 free_irq(chip->irq, chip); 824 825 cx88_core_put(chip->core, chip->pci); 826 827 pci_disable_device(chip->pci); 828 return 0; 829 } 830 831 /* 832 * Component Destructor 833 */ 834 static void snd_cx88_dev_free(struct snd_card *card) 835 { 836 struct cx88_audio_dev *chip = card->private_data; 837 838 snd_cx88_free(chip); 839 } 840 841 /* 842 * Alsa Constructor - Component probe 843 */ 844 845 static int devno; 846 static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci, 847 struct cx88_audio_dev **rchip, 848 struct cx88_core **core_ptr) 849 { 850 struct cx88_audio_dev *chip; 851 struct cx88_core *core; 852 int err; 853 unsigned char pci_lat; 854 855 *rchip = NULL; 856 857 err = pci_enable_device(pci); 858 if (err < 0) 859 return err; 860 861 pci_set_master(pci); 862 863 chip = card->private_data; 864 865 core = cx88_core_get(pci); 866 if (!core) { 867 err = -EINVAL; 868 return err; 869 } 870 871 err = pci_set_dma_mask(pci, DMA_BIT_MASK(32)); 872 if (err) { 873 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n", core->name); 874 cx88_core_put(core, pci); 875 return err; 876 } 877 878 /* pci init */ 879 chip->card = card; 880 chip->pci = pci; 881 chip->irq = -1; 882 spin_lock_init(&chip->reg_lock); 883 884 chip->core = core; 885 886 /* get irq */ 887 err = request_irq(chip->pci->irq, cx8801_irq, 888 IRQF_SHARED, chip->core->name, chip); 889 if (err < 0) { 890 dprintk(0, "%s: can't get IRQ %d\n", 891 chip->core->name, chip->pci->irq); 892 return err; 893 } 894 895 /* print pci info */ 896 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat); 897 898 dprintk(1, 899 "ALSA %s/%i: found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n", 900 core->name, devno, 901 pci_name(pci), pci->revision, pci->irq, 902 pci_lat, (unsigned long long)pci_resource_start(pci, 0)); 903 904 chip->irq = pci->irq; 905 synchronize_irq(chip->irq); 906 907 *rchip = chip; 908 *core_ptr = core; 909 910 return 0; 911 } 912 913 static int cx88_audio_initdev(struct pci_dev *pci, 914 const struct pci_device_id *pci_id) 915 { 916 struct snd_card *card; 917 struct cx88_audio_dev *chip; 918 struct cx88_core *core = NULL; 919 int err; 920 921 if (devno >= SNDRV_CARDS) 922 return (-ENODEV); 923 924 if (!enable[devno]) { 925 ++devno; 926 return (-ENOENT); 927 } 928 929 err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE, 930 sizeof(struct cx88_audio_dev), &card); 931 if (err < 0) 932 return err; 933 934 card->private_free = snd_cx88_dev_free; 935 936 err = snd_cx88_create(card, pci, &chip, &core); 937 if (err < 0) 938 goto error; 939 940 err = snd_cx88_pcm(chip, 0, "CX88 Digital"); 941 if (err < 0) 942 goto error; 943 944 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip)); 945 if (err < 0) 946 goto error; 947 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip)); 948 if (err < 0) 949 goto error; 950 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip)); 951 if (err < 0) 952 goto error; 953 954 /* If there's a wm8775 then add a Line-In ALC switch */ 955 if (core->sd_wm8775) { 956 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip)); 957 if (err < 0) 958 goto error; 959 } 960 961 strscpy(card->driver, "CX88x", sizeof(card->driver)); 962 sprintf(card->shortname, "Conexant CX%x", pci->device); 963 sprintf(card->longname, "%s at %#llx", 964 card->shortname, 965 (unsigned long long)pci_resource_start(pci, 0)); 966 strscpy(card->mixername, "CX88", sizeof(card->mixername)); 967 968 dprintk(0, "%s/%i: ALSA support for cx2388x boards\n", 969 card->driver, devno); 970 971 err = snd_card_register(card); 972 if (err < 0) 973 goto error; 974 pci_set_drvdata(pci, card); 975 976 devno++; 977 return 0; 978 979 error: 980 snd_card_free(card); 981 return err; 982 } 983 984 /* 985 * ALSA destructor 986 */ 987 static void cx88_audio_finidev(struct pci_dev *pci) 988 { 989 struct snd_card *card = pci_get_drvdata(pci); 990 991 snd_card_free(card); 992 993 devno--; 994 } 995 996 /* 997 * PCI driver definition 998 */ 999 1000 static struct pci_driver cx88_audio_pci_driver = { 1001 .name = "cx88_audio", 1002 .id_table = cx88_audio_pci_tbl, 1003 .probe = cx88_audio_initdev, 1004 .remove = cx88_audio_finidev, 1005 }; 1006 1007 module_pci_driver(cx88_audio_pci_driver); 1008