1/* 2 * 3 * Support for audio capture 4 * PCI function #1 of the cx2388x. 5 * 6 * (c) 2005,2006 Ricardo Cerqueira <v4l@cerqueira.org> 7 * (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org> 8 * Based on a dummy cx88 module by Gerd Knorr <kraxel@bytesex.org> 9 * Based on dummy.c by Jaroslav Kysela <perex@suse.cz> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 */ 25 26#include <linux/module.h> 27#include <linux/init.h> 28#include <linux/device.h> 29#include <linux/interrupt.h> 30#include <linux/dma-mapping.h> 31 32#include <asm/delay.h> 33#include <sound/driver.h> 34#include <sound/core.h> 35#include <sound/pcm.h> 36#include <sound/pcm_params.h> 37#include <sound/control.h> 38#include <sound/initval.h> 39 40#include "cx88.h" 41#include "cx88-reg.h" 42 43#define dprintk(level,fmt, arg...) if (debug >= level) \ 44 printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg) 45 46#define dprintk_core(level,fmt, arg...) if (debug >= level) \ 47 printk(KERN_DEBUG "%s/1: " fmt, chip->core->name , ## arg) 48 49 50/**************************************************************************** 51 Data type declarations - Can be moded to a header file later 52 ****************************************************************************/ 53 54/* These can be replaced after done */ 55#define MIXER_ADDR_LAST MAX_CX88_INPUT 56 57struct cx88_audio_dev { 58 struct cx88_core *core; 59 struct cx88_dmaqueue q; 60 61 /* pci i/o */ 62 struct pci_dev *pci; 63 unsigned char pci_rev,pci_lat; 64 65 /* audio controls */ 66 int irq; 67 68 struct snd_card *card; 69 70 spinlock_t reg_lock; 71 72 unsigned int dma_size; 73 unsigned int period_size; 74 unsigned int num_periods; 75 76 struct videobuf_dmabuf dma_risc; 77 78 int mixer_volume[MIXER_ADDR_LAST+1][2]; 79 int capture_source[MIXER_ADDR_LAST+1][2]; 80 81 long int read_count; 82 long int read_offset; 83 84 struct cx88_buffer *buf; 85 86 long opened; 87 struct snd_pcm_substream *substream; 88 89}; 90typedef struct cx88_audio_dev snd_cx88_card_t; 91 92 93 94/**************************************************************************** 95 Module global static vars 96 ****************************************************************************/ 97 98static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 99static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 100static int enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1}; 101static struct snd_card *snd_cx88_cards[SNDRV_CARDS]; 102 103module_param_array(enable, bool, NULL, 0444); 104MODULE_PARM_DESC(enable, "Enable cx88x soundcard. default enabled."); 105 106module_param_array(index, int, NULL, 0444); 107MODULE_PARM_DESC(index, "Index value for cx88x capture interface(s)."); 108 109 110/**************************************************************************** 111 Module macros 112 ****************************************************************************/ 113 114MODULE_DESCRIPTION("ALSA driver module for cx2388x based TV cards"); 115MODULE_AUTHOR("Ricardo Cerqueira"); 116MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); 117MODULE_LICENSE("GPL"); 118MODULE_SUPPORTED_DEVICE("{{Conexant,23881}," 119 "{{Conexant,23882}," 120 "{{Conexant,23883}"); 121static unsigned int debug; 122module_param(debug,int,0644); 123MODULE_PARM_DESC(debug,"enable debug messages"); 124 125/**************************************************************************** 126 Module specific funtions 127 ****************************************************************************/ 128 129/* 130 * BOARD Specific: Sets audio DMA 131 */ 132 133static int _cx88_start_audio_dma(snd_cx88_card_t *chip) 134{ 135 struct cx88_buffer *buf = chip->buf; 136 struct cx88_core *core=chip->core; 137 struct sram_channel *audio_ch = &cx88_sram_channels[SRAM_CH25]; 138 139 140 dprintk(1, "Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x\n",buf->bpl, chip->num_periods, audio_ch->fifo_size / buf->bpl, audio_ch->fifo_start); 141 142 /* setup fifo + format - out channel */ 143 cx88_sram_channel_setup(chip->core, &cx88_sram_channels[SRAM_CH25], 144 buf->bpl, buf->risc.dma); 145 146 /* sets bpl size */ 147 cx_write(MO_AUDD_LNGTH, buf->bpl); 148 149 /* reset counter */ 150 cx_write(MO_AUDD_GPCNTRL,GP_COUNT_CONTROL_RESET); 151 152 dprintk(1,"Enabling IRQ, setting mask from 0x%x to 0x%x\n",chip->core->pci_irqmask,(chip->core->pci_irqmask | 0x02)); 153 /* enable irqs */ 154 cx_set(MO_PCI_INTMSK, chip->core->pci_irqmask | 0x02); 155 156 157 /* Enables corresponding bits at AUD_INT_STAT */ 158 cx_write(MO_AUD_INTMSK, 159 (1<<16)| 160 (1<<12)| 161 (1<<4)| 162 (1<<0) 163 ); 164 165 /* start dma */ 166 cx_set(MO_DEV_CNTRL2, (1<<5)); /* Enables Risc Processor */ 167 cx_set(MO_AUD_DMACNTRL, 0x11); /* audio downstream FIFO and RISC enable */ 168 169 if (debug) 170 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); 171 172 return 0; 173} 174 175/* 176 * BOARD Specific: Resets audio DMA 177 */ 178static int _cx88_stop_audio_dma(snd_cx88_card_t *chip) 179{ 180 struct cx88_core *core=chip->core; 181 dprintk(1, "Stopping audio DMA\n"); 182 183 /* stop dma */ 184 cx_clear(MO_AUD_DMACNTRL, 0x11); 185 186 /* disable irqs */ 187 cx_clear(MO_PCI_INTMSK, 0x02); 188 cx_clear(MO_AUD_INTMSK, 189 (1<<16)| 190 (1<<12)| 191 (1<<4)| 192 (1<<0) 193 ); 194 195 if (debug) 196 cx88_sram_channel_dump(chip->core, &cx88_sram_channels[SRAM_CH25]); 197 198 return 0; 199} 200 201#define MAX_IRQ_LOOP 10 202 203/* 204 * BOARD Specific: IRQ dma bits 205 */ 206static char *cx88_aud_irqs[32] = { 207 "dn_risci1", "up_risci1", "rds_dn_risc1", /* 0-2 */ 208 NULL, /* reserved */ 209 "dn_risci2", "up_risci2", "rds_dn_risc2", /* 4-6 */ 210 NULL, /* reserved */ 211 "dnf_of", "upf_uf", "rds_dnf_uf", /* 8-10 */ 212 NULL, /* reserved */ 213 "dn_sync", "up_sync", "rds_dn_sync", /* 12-14 */ 214 NULL, /* reserved */ 215 "opc_err", "par_err", "rip_err", /* 16-18 */ 216 "pci_abort", "ber_irq", "mchg_irq" /* 19-21 */ 217}; 218 219/* 220 * BOARD Specific: Threats IRQ audio specific calls 221 */ 222static void cx8801_aud_irq(snd_cx88_card_t *chip) 223{ 224 struct cx88_core *core = chip->core; 225 u32 status, mask; 226 u32 count; 227 228 status = cx_read(MO_AUD_INTSTAT); 229 mask = cx_read(MO_AUD_INTMSK); 230 if (0 == (status & mask)) { 231 spin_unlock(&chip->reg_lock); 232 return; 233 } 234 cx_write(MO_AUD_INTSTAT, status); 235 if (debug > 1 || (status & mask & ~0xff)) 236 cx88_print_irqbits(core->name, "irq aud", 237 cx88_aud_irqs, ARRAY_SIZE(cx88_aud_irqs), 238 status, mask); 239 /* risc op code error */ 240 if (status & (1 << 16)) { 241 printk(KERN_WARNING "%s/0: audio risc op code error\n",core->name); 242 cx_clear(MO_AUD_DMACNTRL, 0x11); 243 cx88_sram_channel_dump(core, &cx88_sram_channels[SRAM_CH25]); 244 } 245 246 /* risc1 downstream */ 247 if (status & 0x01) { 248 spin_lock(&chip->reg_lock); 249 count = cx_read(MO_AUDD_GPCNT); 250 spin_unlock(&chip->reg_lock); 251 if (chip->read_count == 0) 252 chip->read_count += chip->dma_size; 253 } 254 255 if (chip->read_count >= chip->period_size) { 256 dprintk(2, "Elapsing period\n"); 257 snd_pcm_period_elapsed(chip->substream); 258 } 259 260 dprintk(3,"Leaving audio IRQ handler...\n"); 261 262} 263 264/* 265 * BOARD Specific: Handles IRQ calls 266 */ 267static irqreturn_t cx8801_irq(int irq, void *dev_id) 268{ 269 snd_cx88_card_t *chip = dev_id; 270 struct cx88_core *core = chip->core; 271 u32 status; 272 int loop, handled = 0; 273 274 for (loop = 0; loop < MAX_IRQ_LOOP; loop++) { 275 status = cx_read(MO_PCI_INTSTAT) & (core->pci_irqmask | 0x02); 276 if (0 == status) 277 goto out; 278 dprintk( 3, "cx8801_irq\n" ); 279 dprintk( 3, " loop: %d/%d\n", loop, MAX_IRQ_LOOP ); 280 dprintk( 3, " status: %d\n", status ); 281 handled = 1; 282 cx_write(MO_PCI_INTSTAT, status); 283 284 if (status & 0x02) 285 { 286 dprintk( 2, " ALSA IRQ handling\n" ); 287 cx8801_aud_irq(chip); 288 } 289 }; 290 291 if (MAX_IRQ_LOOP == loop) { 292 dprintk( 0, "clearing mask\n" ); 293 dprintk(1,"%s/0: irq loop -- clearing mask\n", 294 core->name); 295 cx_clear(MO_PCI_INTMSK,0x02); 296 } 297 298 out: 299 return IRQ_RETVAL(handled); 300} 301 302 303static int dsp_buffer_free(snd_cx88_card_t *chip) 304{ 305 BUG_ON(!chip->dma_size); 306 307 dprintk(2,"Freeing buffer\n"); 308 videobuf_pci_dma_unmap(chip->pci, &chip->dma_risc); 309 videobuf_dma_free(&chip->dma_risc); 310 btcx_riscmem_free(chip->pci,&chip->buf->risc); 311 kfree(chip->buf); 312 313 chip->dma_size = 0; 314 315 return 0; 316} 317 318/**************************************************************************** 319 ALSA PCM Interface 320 ****************************************************************************/ 321 322/* 323 * Digital hardware definition 324 */ 325static struct snd_pcm_hardware snd_cx88_digital_hw = { 326 .info = SNDRV_PCM_INFO_MMAP | 327 SNDRV_PCM_INFO_INTERLEAVED | 328 SNDRV_PCM_INFO_BLOCK_TRANSFER | 329 SNDRV_PCM_INFO_MMAP_VALID, 330 .formats = SNDRV_PCM_FMTBIT_S16_LE, 331 332 .rates = SNDRV_PCM_RATE_48000, 333 .rate_min = 48000, 334 .rate_max = 48000, 335 .channels_min = 1, 336 .channels_max = 2, 337 .buffer_bytes_max = (2*2048), 338 .period_bytes_min = 2048, 339 .period_bytes_max = 2048, 340 .periods_min = 2, 341 .periods_max = 2, 342}; 343 344/* 345 * audio pcm capture runtime free 346 */ 347static void snd_card_cx88_runtime_free(struct snd_pcm_runtime *runtime) 348{ 349} 350/* 351 * audio pcm capture open callback 352 */ 353static int snd_cx88_pcm_open(struct snd_pcm_substream *substream) 354{ 355 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); 356 struct snd_pcm_runtime *runtime = substream->runtime; 357 int err; 358 359 if (test_and_set_bit(0, &chip->opened)) 360 return -EBUSY; 361 362 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 363 if (err < 0) 364 goto _error; 365 366 chip->substream = substream; 367 368 chip->read_count = 0; 369 chip->read_offset = 0; 370 371 runtime->private_free = snd_card_cx88_runtime_free; 372 runtime->hw = snd_cx88_digital_hw; 373 374 return 0; 375_error: 376 dprintk(1,"Error opening PCM!\n"); 377 clear_bit(0, &chip->opened); 378 smp_mb__after_clear_bit(); 379 return err; 380} 381 382/* 383 * audio close callback 384 */ 385static int snd_cx88_close(struct snd_pcm_substream *substream) 386{ 387 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); 388 389 clear_bit(0, &chip->opened); 390 smp_mb__after_clear_bit(); 391 392 return 0; 393} 394 395/* 396 * hw_params callback 397 */ 398static int snd_cx88_hw_params(struct snd_pcm_substream * substream, 399 struct snd_pcm_hw_params * hw_params) 400{ 401 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); 402 struct cx88_buffer *buf; 403 404 if (substream->runtime->dma_area) { 405 dsp_buffer_free(chip); 406 substream->runtime->dma_area = NULL; 407 } 408 409 410 chip->period_size = params_period_bytes(hw_params); 411 chip->num_periods = params_periods(hw_params); 412 chip->dma_size = chip->period_size * params_periods(hw_params); 413 414 BUG_ON(!chip->dma_size); 415 416 dprintk(1,"Setting buffer\n"); 417 418 buf = kzalloc(sizeof(*buf),GFP_KERNEL); 419 if (NULL == buf) 420 return -ENOMEM; 421 422 buf->vb.memory = V4L2_MEMORY_MMAP; 423 buf->vb.width = chip->period_size; 424 buf->vb.height = chip->num_periods; 425 buf->vb.size = chip->dma_size; 426 buf->vb.field = V4L2_FIELD_NONE; 427 428 videobuf_dma_init(&buf->vb.dma); 429 videobuf_dma_init_kernel(&buf->vb.dma,PCI_DMA_FROMDEVICE, 430 (PAGE_ALIGN(buf->vb.size) >> PAGE_SHIFT)); 431 432 videobuf_pci_dma_map(chip->pci,&buf->vb.dma); 433 434 435 cx88_risc_databuffer(chip->pci, &buf->risc, 436 buf->vb.dma.sglist, 437 buf->vb.width, buf->vb.height); 438 439 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); 440 buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma); 441 442 buf->vb.state = STATE_PREPARED; 443 444 buf->bpl = chip->period_size; 445 chip->buf = buf; 446 chip->dma_risc = buf->vb.dma; 447 448 dprintk(1,"Buffer ready at %u\n",chip->dma_risc.nr_pages); 449 substream->runtime->dma_area = chip->dma_risc.vmalloc; 450 return 0; 451} 452 453/* 454 * hw free callback 455 */ 456static int snd_cx88_hw_free(struct snd_pcm_substream * substream) 457{ 458 459 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); 460 461 if (substream->runtime->dma_area) { 462 dsp_buffer_free(chip); 463 substream->runtime->dma_area = NULL; 464 } 465 466 return 0; 467} 468 469/* 470 * prepare callback 471 */ 472static int snd_cx88_prepare(struct snd_pcm_substream *substream) 473{ 474 return 0; 475} 476 477 478/* 479 * trigger callback 480 */ 481static int snd_cx88_card_trigger(struct snd_pcm_substream *substream, int cmd) 482{ 483 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); 484 int err; 485 486 spin_lock(&chip->reg_lock); 487 488 switch (cmd) { 489 case SNDRV_PCM_TRIGGER_START: 490 err=_cx88_start_audio_dma(chip); 491 break; 492 case SNDRV_PCM_TRIGGER_STOP: 493 err=_cx88_stop_audio_dma(chip); 494 break; 495 default: 496 err=-EINVAL; 497 break; 498 } 499 500 spin_unlock(&chip->reg_lock); 501 502 return err; 503} 504 505/* 506 * pointer callback 507 */ 508static snd_pcm_uframes_t snd_cx88_pointer(struct snd_pcm_substream *substream) 509{ 510 snd_cx88_card_t *chip = snd_pcm_substream_chip(substream); 511 struct snd_pcm_runtime *runtime = substream->runtime; 512 513 if (chip->read_count) { 514 chip->read_count -= snd_pcm_lib_period_bytes(substream); 515 chip->read_offset += snd_pcm_lib_period_bytes(substream); 516 if (chip->read_offset == chip->dma_size) 517 chip->read_offset = 0; 518 } 519 520 dprintk(2, "Pointer time, will return %li, read %li\n",chip->read_offset,chip->read_count); 521 return bytes_to_frames(runtime, chip->read_offset); 522 523} 524 525/* 526 * operators 527 */ 528static struct snd_pcm_ops snd_cx88_pcm_ops = { 529 .open = snd_cx88_pcm_open, 530 .close = snd_cx88_close, 531 .ioctl = snd_pcm_lib_ioctl, 532 .hw_params = snd_cx88_hw_params, 533 .hw_free = snd_cx88_hw_free, 534 .prepare = snd_cx88_prepare, 535 .trigger = snd_cx88_card_trigger, 536 .pointer = snd_cx88_pointer, 537}; 538 539/* 540 * create a PCM device 541 */ 542static int __devinit snd_cx88_pcm(snd_cx88_card_t *chip, int device, char *name) 543{ 544 int err; 545 struct snd_pcm *pcm; 546 547 err = snd_pcm_new(chip->card, name, device, 0, 1, &pcm); 548 if (err < 0) 549 return err; 550 pcm->private_data = chip; 551 strcpy(pcm->name, name); 552 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cx88_pcm_ops); 553 554 return 0; 555} 556 557/**************************************************************************** 558 CONTROL INTERFACE 559 ****************************************************************************/ 560static int snd_cx88_capture_volume_info(struct snd_kcontrol *kcontrol, 561 struct snd_ctl_elem_info *info) 562{ 563 info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 564 info->count = 1; 565 info->value.integer.min = 0; 566 info->value.integer.max = 0x3f; 567 568 return 0; 569} 570 571/* OK - TODO: test it */ 572static int snd_cx88_capture_volume_get(struct snd_kcontrol *kcontrol, 573 struct snd_ctl_elem_value *value) 574{ 575 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); 576 struct cx88_core *core=chip->core; 577 578 value->value.integer.value[0] = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f); 579 580 return 0; 581} 582 583/* OK - TODO: test it */ 584static int snd_cx88_capture_volume_put(struct snd_kcontrol *kcontrol, 585 struct snd_ctl_elem_value *value) 586{ 587 snd_cx88_card_t *chip = snd_kcontrol_chip(kcontrol); 588 struct cx88_core *core=chip->core; 589 int v; 590 u32 old_control; 591 592 spin_lock_irq(&chip->reg_lock); 593 old_control = 0x3f - (cx_read(AUD_VOL_CTL) & 0x3f); 594 v = 0x3f - (value->value.integer.value[0] & 0x3f); 595 cx_andor(AUD_VOL_CTL, 0x3f, v); 596 spin_unlock_irq(&chip->reg_lock); 597 598 return v != old_control; 599} 600 601static struct snd_kcontrol_new snd_cx88_capture_volume = { 602 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 603 .name = "Capture Volume", 604 .info = snd_cx88_capture_volume_info, 605 .get = snd_cx88_capture_volume_get, 606 .put = snd_cx88_capture_volume_put, 607}; 608 609 610/**************************************************************************** 611 Basic Flow for Sound Devices 612 ****************************************************************************/ 613 614/* 615 * PCI ID Table - 14f1:8801 and 14f1:8811 means function 1: Audio 616 * Only boards with eeprom and byte 1 at eeprom=1 have it 617 */ 618 619static struct pci_device_id cx88_audio_pci_tbl[] __devinitdata = { 620 {0x14f1,0x8801,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, 621 {0x14f1,0x8811,PCI_ANY_ID,PCI_ANY_ID,0,0,0}, 622 {0, } 623}; 624MODULE_DEVICE_TABLE(pci, cx88_audio_pci_tbl); 625 626/* 627 * Chip-specific destructor 628 */ 629 630static int snd_cx88_free(snd_cx88_card_t *chip) 631{ 632 633 if (chip->irq >= 0){ 634 synchronize_irq(chip->irq); 635 free_irq(chip->irq, chip); 636 } 637 638 cx88_core_put(chip->core,chip->pci); 639 640 pci_disable_device(chip->pci); 641 return 0; 642} 643 644/* 645 * Component Destructor 646 */ 647static void snd_cx88_dev_free(struct snd_card * card) 648{ 649 snd_cx88_card_t *chip = card->private_data; 650 651 snd_cx88_free(chip); 652} 653 654 655/* 656 * Alsa Constructor - Component probe 657 */ 658 659static int devno; 660static int __devinit snd_cx88_create(struct snd_card *card, 661 struct pci_dev *pci, 662 snd_cx88_card_t **rchip) 663{ 664 snd_cx88_card_t *chip; 665 struct cx88_core *core; 666 int err; 667 668 *rchip = NULL; 669 670 err = pci_enable_device(pci); 671 if (err < 0) 672 return err; 673 674 pci_set_master(pci); 675 676 chip = (snd_cx88_card_t *) card->private_data; 677 678 core = cx88_core_get(pci); 679 if (NULL == core) { 680 err = -EINVAL; 681 kfree (chip); 682 return err; 683 } 684 685 if (!pci_dma_supported(pci,DMA_32BIT_MASK)) { 686 dprintk(0, "%s/1: Oops: no 32bit PCI DMA ???\n",core->name); 687 err = -EIO; 688 cx88_core_put(core,pci); 689 return err; 690 } 691 692 693 /* pci init */ 694 chip->card = card; 695 chip->pci = pci; 696 chip->irq = -1; 697 spin_lock_init(&chip->reg_lock); 698 699 chip->core = core; 700 701 /* get irq */ 702 err = request_irq(chip->pci->irq, cx8801_irq, 703 IRQF_SHARED | IRQF_DISABLED, chip->core->name, chip); 704 if (err < 0) { 705 dprintk(0, "%s: can't get IRQ %d\n", 706 chip->core->name, chip->pci->irq); 707 return err; 708 } 709 710 /* print pci info */ 711 pci_read_config_byte(pci, PCI_CLASS_REVISION, &chip->pci_rev); 712 pci_read_config_byte(pci, PCI_LATENCY_TIMER, &chip->pci_lat); 713 714 dprintk(1,"ALSA %s/%i: found at %s, rev: %d, irq: %d, " 715 "latency: %d, mmio: 0x%llx\n", core->name, devno, 716 pci_name(pci), chip->pci_rev, pci->irq, 717 chip->pci_lat,(unsigned long long)pci_resource_start(pci,0)); 718 719 chip->irq = pci->irq; 720 synchronize_irq(chip->irq); 721 722 snd_card_set_dev(card, &pci->dev); 723 724 *rchip = chip; 725 726 return 0; 727} 728 729static int __devinit cx88_audio_initdev(struct pci_dev *pci, 730 const struct pci_device_id *pci_id) 731{ 732 struct snd_card *card; 733 snd_cx88_card_t *chip; 734 int err; 735 736 if (devno >= SNDRV_CARDS) 737 return (-ENODEV); 738 739 if (!enable[devno]) { 740 ++devno; 741 return (-ENOENT); 742 } 743 744 card = snd_card_new(index[devno], id[devno], THIS_MODULE, sizeof(snd_cx88_card_t)); 745 if (!card) 746 return (-ENOMEM); 747 748 card->private_free = snd_cx88_dev_free; 749 750 err = snd_cx88_create(card, pci, &chip); 751 if (err < 0) 752 return (err); 753 754 err = snd_cx88_pcm(chip, 0, "CX88 Digital"); 755 756 if (err < 0) { 757 snd_card_free(card); 758 return (err); 759 } 760 761 err = snd_ctl_add(card, snd_ctl_new1(&snd_cx88_capture_volume, chip)); 762 if (err < 0) { 763 snd_card_free(card); 764 return (err); 765 } 766 767 strcpy (card->driver, "CX88x"); 768 sprintf(card->shortname, "Conexant CX%x", pci->device); 769 sprintf(card->longname, "%s at %#llx", 770 card->shortname,(unsigned long long)pci_resource_start(pci, 0)); 771 strcpy (card->mixername, "CX88"); 772 773 dprintk (0, "%s/%i: ALSA support for cx2388x boards\n", 774 card->driver,devno); 775 776 err = snd_card_register(card); 777 if (err < 0) { 778 snd_card_free(card); 779 return (err); 780 } 781 snd_cx88_cards[devno] = card; 782 783 pci_set_drvdata(pci,card); 784 785 devno++; 786 return 0; 787} 788/* 789 * ALSA destructor 790 */ 791static void __devexit cx88_audio_finidev(struct pci_dev *pci) 792{ 793 struct cx88_audio_dev *card = pci_get_drvdata(pci); 794 795 snd_card_free((void *)card); 796 797 pci_set_drvdata(pci, NULL); 798 799 devno--; 800} 801 802/* 803 * PCI driver definition 804 */ 805 806static struct pci_driver cx88_audio_pci_driver = { 807 .name = "cx88_audio", 808 .id_table = cx88_audio_pci_tbl, 809 .probe = cx88_audio_initdev, 810 .remove = cx88_audio_finidev, 811}; 812 813/**************************************************************************** 814 LINUX MODULE INIT 815 ****************************************************************************/ 816 817/* 818 * module init 819 */ 820static int cx88_audio_init(void) 821{ 822 printk(KERN_INFO "cx2388x alsa driver version %d.%d.%d loaded\n", 823 (CX88_VERSION_CODE >> 16) & 0xff, 824 (CX88_VERSION_CODE >> 8) & 0xff, 825 CX88_VERSION_CODE & 0xff); 826#ifdef SNAPSHOT 827 printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n", 828 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100); 829#endif 830 return pci_register_driver(&cx88_audio_pci_driver); 831} 832 833/* 834 * module remove 835 */ 836static void cx88_audio_fini(void) 837{ 838 839 pci_unregister_driver(&cx88_audio_pci_driver); 840} 841 842module_init(cx88_audio_init); 843module_exit(cx88_audio_fini); 844 845/* ----------------------------------------------------------- */ 846/* 847 * Local variables: 848 * c-basic-offset: 8 849 * End: 850 */ 851