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 err = pci_set_dma_mask(pci,DMA_BIT_MASK(32)); 894 if (err) { 895 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name); 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); 1025