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 unsigned long 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, 275 unsigned long nr_pages) 276 { 277 struct cx88_audio_buffer *buf = chip->buf; 278 struct page *pg; 279 int i; 280 281 buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT); 282 if (!buf->vaddr) { 283 dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages); 284 return -ENOMEM; 285 } 286 287 dprintk(1, "vmalloc is at addr %p, size=%lu\n", 288 buf->vaddr, nr_pages << PAGE_SHIFT); 289 290 memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); 291 buf->nr_pages = nr_pages; 292 293 buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); 294 if (!buf->sglist) 295 goto vzalloc_err; 296 297 sg_init_table(buf->sglist, buf->nr_pages); 298 for (i = 0; i < buf->nr_pages; i++) { 299 pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE); 300 if (!pg) 301 goto vmalloc_to_page_err; 302 sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0); 303 } 304 return 0; 305 306 vmalloc_to_page_err: 307 vfree(buf->sglist); 308 buf->sglist = NULL; 309 vzalloc_err: 310 vfree(buf->vaddr); 311 buf->vaddr = NULL; 312 return -ENOMEM; 313 } 314 315 static int cx88_alsa_dma_map(struct cx88_audio_dev *dev) 316 { 317 struct cx88_audio_buffer *buf = dev->buf; 318 319 buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist, 320 buf->nr_pages, DMA_FROM_DEVICE); 321 322 if (buf->sglen == 0) { 323 pr_warn("%s: cx88_alsa_map_sg failed\n", __func__); 324 return -ENOMEM; 325 } 326 return 0; 327 } 328 329 static int cx88_alsa_dma_unmap(struct cx88_audio_dev *dev) 330 { 331 struct cx88_audio_buffer *buf = dev->buf; 332 333 if (!buf->sglen) 334 return 0; 335 336 dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->nr_pages, 337 DMA_FROM_DEVICE); 338 buf->sglen = 0; 339 return 0; 340 } 341 342 static int cx88_alsa_dma_free(struct cx88_audio_buffer *buf) 343 { 344 vfree(buf->sglist); 345 buf->sglist = NULL; 346 vfree(buf->vaddr); 347 buf->vaddr = NULL; 348 return 0; 349 } 350 351 static int dsp_buffer_free(struct cx88_audio_dev *chip) 352 { 353 struct cx88_riscmem *risc = &chip->buf->risc; 354 355 WARN_ON(!chip->dma_size); 356 357 dprintk(2, "Freeing buffer\n"); 358 cx88_alsa_dma_unmap(chip); 359 cx88_alsa_dma_free(chip->buf); 360 if (risc->cpu) 361 pci_free_consistent(chip->pci, risc->size, 362 risc->cpu, risc->dma); 363 kfree(chip->buf); 364 365 chip->buf = NULL; 366 367 return 0; 368 } 369 370 /* 371 * ALSA PCM Interface 372 */ 373 374 /* 375 * Digital hardware definition 376 */ 377 #define DEFAULT_FIFO_SIZE 4096 378 static const struct snd_pcm_hardware snd_cx88_digital_hw = { 379 .info = SNDRV_PCM_INFO_MMAP | 380 SNDRV_PCM_INFO_INTERLEAVED | 381 SNDRV_PCM_INFO_BLOCK_TRANSFER | 382 SNDRV_PCM_INFO_MMAP_VALID, 383 .formats = SNDRV_PCM_FMTBIT_S16_LE, 384 385 .rates = SNDRV_PCM_RATE_48000, 386 .rate_min = 48000, 387 .rate_max = 48000, 388 .channels_min = 2, 389 .channels_max = 2, 390 /* 391 * Analog audio output will be full of clicks and pops if there 392 * are not exactly four lines in the SRAM FIFO buffer. 393 */ 394 .period_bytes_min = DEFAULT_FIFO_SIZE / 4, 395 .period_bytes_max = DEFAULT_FIFO_SIZE / 4, 396 .periods_min = 1, 397 .periods_max = 1024, 398 .buffer_bytes_max = (1024 * 1024), 399 }; 400 401 /* 402 * audio pcm capture open callback 403 */ 404 static int snd_cx88_pcm_open(struct snd_pcm_substream *substream) 405 { 406 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 407 struct snd_pcm_runtime *runtime = substream->runtime; 408 int err; 409 410 if (!chip) { 411 pr_err("BUG: cx88 can't find device struct. Can't proceed with open\n"); 412 return -ENODEV; 413 } 414 415 err = snd_pcm_hw_constraint_pow2(runtime, 0, 416 SNDRV_PCM_HW_PARAM_PERIODS); 417 if (err < 0) 418 goto _error; 419 420 chip->substream = substream; 421 422 runtime->hw = snd_cx88_digital_hw; 423 424 if (cx88_sram_channels[SRAM_CH25].fifo_size != DEFAULT_FIFO_SIZE) { 425 unsigned int bpl = cx88_sram_channels[SRAM_CH25].fifo_size / 4; 426 427 bpl &= ~7; /* must be multiple of 8 */ 428 runtime->hw.period_bytes_min = bpl; 429 runtime->hw.period_bytes_max = bpl; 430 } 431 432 return 0; 433 _error: 434 dprintk(1, "Error opening PCM!\n"); 435 return err; 436 } 437 438 /* 439 * audio close callback 440 */ 441 static int snd_cx88_close(struct snd_pcm_substream *substream) 442 { 443 return 0; 444 } 445 446 /* 447 * hw_params callback 448 */ 449 static int snd_cx88_hw_params(struct snd_pcm_substream *substream, 450 struct snd_pcm_hw_params *hw_params) 451 { 452 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 453 454 struct cx88_audio_buffer *buf; 455 int ret; 456 457 if (substream->runtime->dma_area) { 458 dsp_buffer_free(chip); 459 substream->runtime->dma_area = NULL; 460 } 461 462 chip->period_size = params_period_bytes(hw_params); 463 chip->num_periods = params_periods(hw_params); 464 chip->dma_size = chip->period_size * params_periods(hw_params); 465 466 WARN_ON(!chip->dma_size); 467 WARN_ON(chip->num_periods & (chip->num_periods - 1)); 468 469 buf = kzalloc(sizeof(*buf), GFP_KERNEL); 470 if (!buf) 471 return -ENOMEM; 472 473 chip->buf = buf; 474 buf->bpl = chip->period_size; 475 476 ret = cx88_alsa_dma_init(chip, 477 (PAGE_ALIGN(chip->dma_size) >> PAGE_SHIFT)); 478 if (ret < 0) 479 goto error; 480 481 ret = cx88_alsa_dma_map(chip); 482 if (ret < 0) 483 goto error; 484 485 ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist, 486 chip->period_size, chip->num_periods, 1); 487 if (ret < 0) 488 goto error; 489 490 /* Loop back to start of program */ 491 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); 492 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 493 494 substream->runtime->dma_area = chip->buf->vaddr; 495 substream->runtime->dma_bytes = chip->dma_size; 496 substream->runtime->dma_addr = 0; 497 return 0; 498 499 error: 500 kfree(buf); 501 return ret; 502 } 503 504 /* 505 * hw free callback 506 */ 507 static int snd_cx88_hw_free(struct snd_pcm_substream *substream) 508 { 509 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 510 511 if (substream->runtime->dma_area) { 512 dsp_buffer_free(chip); 513 substream->runtime->dma_area = NULL; 514 } 515 516 return 0; 517 } 518 519 /* 520 * prepare callback 521 */ 522 static int snd_cx88_prepare(struct snd_pcm_substream *substream) 523 { 524 return 0; 525 } 526 527 /* 528 * trigger callback 529 */ 530 static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd) 531 { 532 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 533 int err; 534 535 /* Local interrupts are already disabled by ALSA */ 536 spin_lock(&chip->reg_lock); 537 538 switch (cmd) { 539 case SNDRV_PCM_TRIGGER_START: 540 err = _cx88_start_audio_dma(chip); 541 break; 542 case SNDRV_PCM_TRIGGER_STOP: 543 err = _cx88_stop_audio_dma(chip); 544 break; 545 default: 546 err = -EINVAL; 547 break; 548 } 549 550 spin_unlock(&chip->reg_lock); 551 552 return err; 553 } 554 555 /* 556 * pointer callback 557 */ 558 static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream) 559 { 560 struct cx88_audio_dev *chip = snd_pcm_substream_chip(substream); 561 struct snd_pcm_runtime *runtime = substream->runtime; 562 u16 count; 563 564 count = atomic_read(&chip->count); 565 566 // dprintk(2, "%s - count %d (+%u), period %d, frame %lu\n", __func__, 567 // count, new, count & (runtime->periods-1), 568 // runtime->period_size * (count & (runtime->periods-1))); 569 return runtime->period_size * (count & (runtime->periods - 1)); 570 } 571 572 /* 573 * page callback (needed for mmap) 574 */ 575 static struct page *snd_cx88_page(struct snd_pcm_substream *substream, 576 unsigned long offset) 577 { 578 void *pageptr = substream->runtime->dma_area + offset; 579 580 return vmalloc_to_page(pageptr); 581 } 582 583 /* 584 * operators 585 */ 586 static const struct snd_pcm_ops snd_cx88_pcm_ops = { 587 .open = snd_cx88_pcm_open, 588 .close = snd_cx88_close, 589 .hw_params = snd_cx88_hw_params, 590 .hw_free = snd_cx88_hw_free, 591 .prepare = snd_cx88_prepare, 592 .trigger = snd_cx88_card_trigger, 593 .pointer = snd_cx88_pointer, 594 .page = snd_cx88_page, 595 }; 596 597 /* 598 * create a PCM device 599 */ 600 static int snd_cx88_pcm(struct cx88_audio_dev *chip, int device, 601 const char *name) 602 { 603 int err; 604 struct snd_pcm *pcm; 605 606 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); 607 if (err < 0) 608 return err; 609 pcm->private_data = chip; 610 strscpy(pcm->name, name, sizeof(pcm->name)); 611 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops); 612 613 return 0; 614 } 615 616 /* 617 * CONTROL INTERFACE 618 */ 619 static int snd_cx88_volume_info(struct snd_kcontrol *kcontrol, 620 struct snd_ctl_elem_info *info) 621 { 622 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 623 info->count = 2; 624 info->value.integer.min = 0; 625 info->value.integer.max = 0x3f; 626 627 return 0; 628 } 629 630 static int snd_cx88_volume_get(struct snd_kcontrol *kcontrol, 631 struct snd_ctl_elem_value *value) 632 { 633 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 634 struct cx88_core *core = chip->core; 635 int vol = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f), 636 bal = cx_read(AUD_BAL_CTL); 637 638 value->value.integer.value[(bal & 0x40) ? 0 : 1] = vol; 639 vol -= (bal & 0x3f); 640 value->value.integer.value[(bal & 0x40) ? 1 : 0] = vol < 0 ? 0 : vol; 641 642 return 0; 643 } 644 645 static void snd_cx88_wm8775_volume_put(struct snd_kcontrol *kcontrol, 646 struct snd_ctl_elem_value *value) 647 { 648 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 649 struct cx88_core *core = chip->core; 650 u16 left = value->value.integer.value[0]; 651 u16 right = value->value.integer.value[1]; 652 int v, b; 653 654 /* Pass volume & balance onto any WM8775 */ 655 if (left >= right) { 656 v = left << 10; 657 b = left ? (0x8000 * right) / left : 0x8000; 658 } else { 659 v = right << 10; 660 b = right ? 0xffff - (0x8000 * left) / right : 0x8000; 661 } 662 wm8775_s_ctrl(core, V4L2_CID_AUDIO_VOLUME, v); 663 wm8775_s_ctrl(core, V4L2_CID_AUDIO_BALANCE, b); 664 } 665 666 /* OK - TODO: test it */ 667 static int snd_cx88_volume_put(struct snd_kcontrol *kcontrol, 668 struct snd_ctl_elem_value *value) 669 { 670 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 671 struct cx88_core *core = chip->core; 672 int left, right, v, b; 673 int changed = 0; 674 u32 old; 675 676 if (core->sd_wm8775) 677 snd_cx88_wm8775_volume_put(kcontrol, value); 678 679 left = value->value.integer.value[0] & 0x3f; 680 right = value->value.integer.value[1] & 0x3f; 681 b = right - left; 682 if (b < 0) { 683 v = 0x3f - left; 684 b = (-b) | 0x40; 685 } else { 686 v = 0x3f - right; 687 } 688 /* Do we really know this will always be called with IRQs on? */ 689 spin_lock_irq(&chip->reg_lock); 690 old = cx_read(AUD_VOL_CTL); 691 if (v != (old & 0x3f)) { 692 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, (old & ~0x3f) | v); 693 changed = 1; 694 } 695 if ((cx_read(AUD_BAL_CTL) & 0x7f) != b) { 696 cx_write(AUD_BAL_CTL, b); 697 changed = 1; 698 } 699 spin_unlock_irq(&chip->reg_lock); 700 701 return changed; 702 } 703 704 static const DECLARE_TLV_DB_SCALE(snd_cx88_db_scale, -6300, 100, 0); 705 706 static const struct snd_kcontrol_new snd_cx88_volume = { 707 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 708 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | 709 SNDRV_CTL_ELEM_ACCESS_TLV_READ, 710 .name = "Analog-TV Volume", 711 .info = snd_cx88_volume_info, 712 .get = snd_cx88_volume_get, 713 .put = snd_cx88_volume_put, 714 .tlv.p = snd_cx88_db_scale, 715 }; 716 717 static int snd_cx88_switch_get(struct snd_kcontrol *kcontrol, 718 struct snd_ctl_elem_value *value) 719 { 720 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 721 struct cx88_core *core = chip->core; 722 u32 bit = kcontrol->private_value; 723 724 value->value.integer.value[0] = !(cx_read(AUD_VOL_CTL) & bit); 725 return 0; 726 } 727 728 static int snd_cx88_switch_put(struct snd_kcontrol *kcontrol, 729 struct snd_ctl_elem_value *value) 730 { 731 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 732 struct cx88_core *core = chip->core; 733 u32 bit = kcontrol->private_value; 734 int ret = 0; 735 u32 vol; 736 737 spin_lock_irq(&chip->reg_lock); 738 vol = cx_read(AUD_VOL_CTL); 739 if (value->value.integer.value[0] != !(vol & bit)) { 740 vol ^= bit; 741 cx_swrite(SHADOW_AUD_VOL_CTL, AUD_VOL_CTL, vol); 742 /* Pass mute onto any WM8775 */ 743 if (core->sd_wm8775 && ((1 << 6) == bit)) 744 wm8775_s_ctrl(core, 745 V4L2_CID_AUDIO_MUTE, 0 != (vol & bit)); 746 ret = 1; 747 } 748 spin_unlock_irq(&chip->reg_lock); 749 return ret; 750 } 751 752 static const struct snd_kcontrol_new snd_cx88_dac_switch = { 753 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 754 .name = "Audio-Out Switch", 755 .info = snd_ctl_boolean_mono_info, 756 .get = snd_cx88_switch_get, 757 .put = snd_cx88_switch_put, 758 .private_value = (1 << 8), 759 }; 760 761 static const struct snd_kcontrol_new snd_cx88_source_switch = { 762 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 763 .name = "Analog-TV Switch", 764 .info = snd_ctl_boolean_mono_info, 765 .get = snd_cx88_switch_get, 766 .put = snd_cx88_switch_put, 767 .private_value = (1 << 6), 768 }; 769 770 static int snd_cx88_alc_get(struct snd_kcontrol *kcontrol, 771 struct snd_ctl_elem_value *value) 772 { 773 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 774 struct cx88_core *core = chip->core; 775 s32 val; 776 777 val = wm8775_g_ctrl(core, V4L2_CID_AUDIO_LOUDNESS); 778 value->value.integer.value[0] = val ? 1 : 0; 779 return 0; 780 } 781 782 static int snd_cx88_alc_put(struct snd_kcontrol *kcontrol, 783 struct snd_ctl_elem_value *value) 784 { 785 struct cx88_audio_dev *chip = snd_kcontrol_chip(kcontrol); 786 struct cx88_core *core = chip->core; 787 788 wm8775_s_ctrl(core, V4L2_CID_AUDIO_LOUDNESS, 789 value->value.integer.value[0] != 0); 790 return 0; 791 } 792 793 static const struct snd_kcontrol_new snd_cx88_alc_switch = { 794 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 795 .name = "Line-In ALC Switch", 796 .info = snd_ctl_boolean_mono_info, 797 .get = snd_cx88_alc_get, 798 .put = snd_cx88_alc_put, 799 }; 800 801 /* 802 * Basic Flow for Sound Devices 803 */ 804 805 /* 806 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio 807 * Only boards with eeprom and byte 1 at eeprom=1 have it 808 */ 809 810 static const struct pci_device_id cx88_audio_pci_tbl[] = { 811 {0x14f1, 0x8801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 812 {0x14f1, 0x8811, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 813 {0, } 814 }; 815 MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl); 816 817 /* 818 * Chip-specific destructor 819 */ 820 821 static int snd_cx88_free(struct cx88_audio_dev *chip) 822 { 823 if (chip->irq >= 0) 824 free_irq(chip->irq, chip); 825 826 cx88_core_put(chip->core, chip->pci); 827 828 pci_disable_device(chip->pci); 829 return 0; 830 } 831 832 /* 833 * Component Destructor 834 */ 835 static void snd_cx88_dev_free(struct snd_card *card) 836 { 837 struct cx88_audio_dev *chip = card->private_data; 838 839 snd_cx88_free(chip); 840 } 841 842 /* 843 * Alsa Constructor - Component probe 844 */ 845 846 static int devno; 847 static int snd_cx88_create(struct snd_card *card, struct pci_dev *pci, 848 struct cx88_audio_dev **rchip, 849 struct cx88_core **core_ptr) 850 { 851 struct cx88_audio_dev *chip; 852 struct cx88_core *core; 853 int err; 854 unsigned char pci_lat; 855 856 *rchip = NULL; 857 858 err = pci_enable_device(pci); 859 if (err < 0) 860 return err; 861 862 pci_set_master(pci); 863 864 chip = card->private_data; 865 866 core = cx88_core_get(pci); 867 if (!core) { 868 err = -EINVAL; 869 return err; 870 } 871 872 err = pci_set_dma_mask(pci, DMA_BIT_MASK(32)); 873 if (err) { 874 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n", core->name); 875 cx88_core_put(core, pci); 876 return err; 877 } 878 879 /* pci init */ 880 chip->card = card; 881 chip->pci = pci; 882 chip->irq = -1; 883 spin_lock_init(&chip->reg_lock); 884 885 chip->core = core; 886 887 /* get irq */ 888 err = request_irq(chip->pci->irq, cx8801_irq, 889 IRQF_SHARED, chip->core->name, chip); 890 if (err < 0) { 891 dprintk(0, "%s: can't get IRQ %d\n", 892 chip->core->name, chip->pci->irq); 893 return err; 894 } 895 896 /* print pci info */ 897 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &pci_lat); 898 899 dprintk(1, 900 "ALSA %s/%i: found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n", 901 core->name, devno, 902 pci_name(pci), pci->revision, pci->irq, 903 pci_lat, (unsigned long long)pci_resource_start(pci, 0)); 904 905 chip->irq = pci->irq; 906 synchronize_irq(chip->irq); 907 908 *rchip = chip; 909 *core_ptr = core; 910 911 return 0; 912 } 913 914 static int cx88_audio_initdev(struct pci_dev *pci, 915 const struct pci_device_id *pci_id) 916 { 917 struct snd_card *card; 918 struct cx88_audio_dev *chip; 919 struct cx88_core *core = NULL; 920 int err; 921 922 if (devno >= SNDRV_CARDS) 923 return (-ENODEV); 924 925 if (!enable[devno]) { 926 ++devno; 927 return (-ENOENT); 928 } 929 930 err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE, 931 sizeof(struct cx88_audio_dev), &card); 932 if (err < 0) 933 return err; 934 935 card->private_free = snd_cx88_dev_free; 936 937 err = snd_cx88_create(card, pci, &chip, &core); 938 if (err < 0) 939 goto error; 940 941 err = snd_cx88_pcm(chip, 0, "CX88 Digital"); 942 if (err < 0) 943 goto error; 944 945 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_volume, chip)); 946 if (err < 0) 947 goto error; 948 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_dac_switch, chip)); 949 if (err < 0) 950 goto error; 951 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_source_switch, chip)); 952 if (err < 0) 953 goto error; 954 955 /* If there's a wm8775 then add a Line-In ALC switch */ 956 if (core->sd_wm8775) { 957 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_alc_switch, chip)); 958 if (err < 0) 959 goto error; 960 } 961 962 strscpy(card->driver, "CX88x", sizeof(card->driver)); 963 sprintf(card->shortname, "Conexant CX%x", pci->device); 964 sprintf(card->longname, "%s at %#llx", 965 card->shortname, 966 (unsigned long long)pci_resource_start(pci, 0)); 967 strscpy(card->mixername, "CX88", sizeof(card->mixername)); 968 969 dprintk(0, "%s/%i: ALSA support for cx2388x boards\n", 970 card->driver, devno); 971 972 err = snd_card_register(card); 973 if (err < 0) 974 goto error; 975 pci_set_drvdata(pci, card); 976 977 devno++; 978 return 0; 979 980 error: 981 snd_card_free(card); 982 return err; 983 } 984 985 /* 986 * ALSA destructor 987 */ 988 static void cx88_audio_finidev(struct pci_dev *pci) 989 { 990 struct snd_card *card = pci_get_drvdata(pci); 991 992 snd_card_free(card); 993 994 devno--; 995 } 996 997 /* 998 * PCI driver definition 999 */ 1000 1001 static struct pci_driver cx88_audio_pci_driver = { 1002 .name = "cx88_audio", 1003 .id_table = cx88_audio_pci_tbl, 1004 .probe = cx88_audio_initdev, 1005 .remove = cx88_audio_finidev, 1006 }; 1007 1008 module_pci_driver(cx88_audio_pci_driver); 1009