1/* 2 * ALSA modem driver for VIA VT82xx (South Bridge) 3 * 4 * VT82C686A/B/C, VT8233A/C, VT8235 5 * 6 * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz> 7 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com> 8 * 2002 Takashi Iwai <tiwai@suse.de> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 */ 25 26/* 27 * Changes: 28 * 29 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org> 30 * Modified from original audio driver 'via82xx.c' to support AC97 31 * modems. 32 */ 33 34#include <sound/driver.h> 35#include <asm/io.h> 36#include <linux/delay.h> 37#include <linux/interrupt.h> 38#include <linux/init.h> 39#include <linux/pci.h> 40#include <linux/slab.h> 41#include <linux/moduleparam.h> 42#include <sound/core.h> 43#include <sound/pcm.h> 44#include <sound/pcm_params.h> 45#include <sound/info.h> 46#include <sound/ac97_codec.h> 47#include <sound/initval.h> 48 49 50MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); 51MODULE_DESCRIPTION("VIA VT82xx modem"); 52MODULE_LICENSE("GPL"); 53MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); 54 55static int index = -2; /* Exclude the first card */ 56static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 57static int ac97_clock = 48000; 58 59module_param(index, int, 0444); 60MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); 61module_param(id, charp, 0444); 62MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); 63module_param(ac97_clock, int, 0444); 64MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 65 66/* just for backward compatibility */ 67static int enable; 68module_param(enable, bool, 0444); 69 70 71/* 72 * Direct registers 73 */ 74 75#define VIAREG(via, x) ((via)->port + VIA_REG_##x) 76#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) 77 78/* common offsets */ 79#define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ 80#define VIA_REG_STAT_ACTIVE 0x80 /* RO */ 81#define VIA_REG_STAT_PAUSED 0x40 /* RO */ 82#define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ 83#define VIA_REG_STAT_STOPPED 0x04 /* RWC */ 84#define VIA_REG_STAT_EOL 0x02 /* RWC */ 85#define VIA_REG_STAT_FLAG 0x01 /* RWC */ 86#define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ 87#define VIA_REG_CTRL_START 0x80 /* WO */ 88#define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ 89#define VIA_REG_CTRL_AUTOSTART 0x20 90#define VIA_REG_CTRL_PAUSE 0x08 /* RW */ 91#define VIA_REG_CTRL_INT_STOP 0x04 92#define VIA_REG_CTRL_INT_EOL 0x02 93#define VIA_REG_CTRL_INT_FLAG 0x01 94#define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ 95#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) 96#define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ 97#define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ 98#define VIA_REG_TYPE_16BIT 0x20 /* RW */ 99#define VIA_REG_TYPE_STEREO 0x10 /* RW */ 100#define VIA_REG_TYPE_INT_LLINE 0x00 101#define VIA_REG_TYPE_INT_LSAMPLE 0x04 102#define VIA_REG_TYPE_INT_LESSONE 0x08 103#define VIA_REG_TYPE_INT_MASK 0x0c 104#define VIA_REG_TYPE_INT_EOL 0x02 105#define VIA_REG_TYPE_INT_FLAG 0x01 106#define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ 107#define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ 108#define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ 109#define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ 110#define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ 111 112#define DEFINE_VIA_REGSET(name,val) \ 113enum {\ 114 VIA_REG_##name##_STATUS = (val),\ 115 VIA_REG_##name##_CONTROL = (val) + 0x01,\ 116 VIA_REG_##name##_TYPE = (val) + 0x02,\ 117 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ 118 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ 119 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ 120 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ 121} 122 123/* modem block */ 124DEFINE_VIA_REGSET(MO, 0x40); 125DEFINE_VIA_REGSET(MI, 0x50); 126 127/* AC'97 */ 128#define VIA_REG_AC97 0x80 /* dword */ 129#define VIA_REG_AC97_CODEC_ID_MASK (3<<30) 130#define VIA_REG_AC97_CODEC_ID_SHIFT 30 131#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 132#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 133#define VIA_REG_AC97_SECONDARY_VALID (1<<27) 134#define VIA_REG_AC97_PRIMARY_VALID (1<<25) 135#define VIA_REG_AC97_BUSY (1<<24) 136#define VIA_REG_AC97_READ (1<<23) 137#define VIA_REG_AC97_CMD_SHIFT 16 138#define VIA_REG_AC97_CMD_MASK 0x7e 139#define VIA_REG_AC97_DATA_SHIFT 0 140#define VIA_REG_AC97_DATA_MASK 0xffff 141 142#define VIA_REG_SGD_SHADOW 0x84 /* dword */ 143#define VIA_REG_SGD_STAT_PB_FLAG (1<<0) 144#define VIA_REG_SGD_STAT_CP_FLAG (1<<1) 145#define VIA_REG_SGD_STAT_FM_FLAG (1<<2) 146#define VIA_REG_SGD_STAT_PB_EOL (1<<4) 147#define VIA_REG_SGD_STAT_CP_EOL (1<<5) 148#define VIA_REG_SGD_STAT_FM_EOL (1<<6) 149#define VIA_REG_SGD_STAT_PB_STOP (1<<8) 150#define VIA_REG_SGD_STAT_CP_STOP (1<<9) 151#define VIA_REG_SGD_STAT_FM_STOP (1<<10) 152#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) 153#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) 154#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) 155#define VIA_REG_SGD_STAT_MR_FLAG (1<<16) 156#define VIA_REG_SGD_STAT_MW_FLAG (1<<17) 157#define VIA_REG_SGD_STAT_MR_EOL (1<<20) 158#define VIA_REG_SGD_STAT_MW_EOL (1<<21) 159#define VIA_REG_SGD_STAT_MR_STOP (1<<24) 160#define VIA_REG_SGD_STAT_MW_STOP (1<<25) 161#define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) 162#define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) 163 164#define VIA_REG_GPI_STATUS 0x88 165#define VIA_REG_GPI_INTR 0x8c 166 167#define VIA_TBL_BIT_FLAG 0x40000000 168#define VIA_TBL_BIT_EOL 0x80000000 169 170/* pci space */ 171#define VIA_ACLINK_STAT 0x40 172#define VIA_ACLINK_C11_READY 0x20 173#define VIA_ACLINK_C10_READY 0x10 174#define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ 175#define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ 176#define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ 177#define VIA_ACLINK_CTRL 0x41 178#define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ 179#define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ 180#define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ 181#define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ 182#define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ 183#define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ 184#define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ 185#define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ 186#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ 187 VIA_ACLINK_CTRL_RESET|\ 188 VIA_ACLINK_CTRL_PCM) 189#define VIA_FUNC_ENABLE 0x42 190#define VIA_FUNC_MIDI_PNP 0x80 191#define VIA_FUNC_MIDI_IRQMASK 0x40 192#define VIA_FUNC_RX2C_WRITE 0x20 193#define VIA_FUNC_SB_FIFO_EMPTY 0x10 194#define VIA_FUNC_ENABLE_GAME 0x08 195#define VIA_FUNC_ENABLE_FM 0x04 196#define VIA_FUNC_ENABLE_MIDI 0x02 197#define VIA_FUNC_ENABLE_SB 0x01 198#define VIA_PNP_CONTROL 0x43 199#define VIA_MC97_CTRL 0x44 200#define VIA_MC97_CTRL_ENABLE 0x80 201#define VIA_MC97_CTRL_SECONDARY 0x40 202#define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ 203 VIA_MC97_CTRL_SECONDARY) 204 205 206/* 207 * pcm stream 208 */ 209 210struct snd_via_sg_table { 211 unsigned int offset; 212 unsigned int size; 213} ; 214 215#define VIA_TABLE_SIZE 255 216 217struct viadev { 218 unsigned int reg_offset; 219 unsigned long port; 220 int direction; /* playback = 0, capture = 1 */ 221 struct snd_pcm_substream *substream; 222 int running; 223 unsigned int tbl_entries; /* # descriptors */ 224 struct snd_dma_buffer table; 225 struct snd_via_sg_table *idx_table; 226 /* for recovery from the unexpected pointer */ 227 unsigned int lastpos; 228 unsigned int bufsize; 229 unsigned int bufsize2; 230}; 231 232enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 233 234#define VIA_MAX_MODEM_DEVS 2 235 236struct via82xx_modem { 237 int irq; 238 239 unsigned long port; 240 241 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 242 243 struct pci_dev *pci; 244 struct snd_card *card; 245 246 unsigned int num_devs; 247 unsigned int playback_devno, capture_devno; 248 struct viadev devs[VIA_MAX_MODEM_DEVS]; 249 250 struct snd_pcm *pcms[2]; 251 252 struct snd_ac97_bus *ac97_bus; 253 struct snd_ac97 *ac97; 254 unsigned int ac97_clock; 255 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 256 257 spinlock_t reg_lock; 258 struct snd_info_entry *proc_entry; 259}; 260 261static struct pci_device_id snd_via82xx_modem_ids[] = { 262 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, }, 263 { 0, } 264}; 265 266MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 267 268/* 269 */ 270 271/* 272 * allocate and initialize the descriptor buffers 273 * periods = number of periods 274 * fragsize = period size in bytes 275 */ 276static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 277 struct pci_dev *pci, 278 unsigned int periods, unsigned int fragsize) 279{ 280 unsigned int i, idx, ofs, rest; 281 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 282 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); 283 284 if (dev->table.area == NULL) { 285 /* the start of each lists must be aligned to 8 bytes, 286 * but the kernel pages are much bigger, so we don't care 287 */ 288 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 289 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 290 &dev->table) < 0) 291 return -ENOMEM; 292 } 293 if (! dev->idx_table) { 294 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); 295 if (! dev->idx_table) 296 return -ENOMEM; 297 } 298 299 /* fill the entries */ 300 idx = 0; 301 ofs = 0; 302 for (i = 0; i < periods; i++) { 303 rest = fragsize; 304 /* fill descriptors for a period. 305 * a period can be split to several descriptors if it's 306 * over page boundary. 307 */ 308 do { 309 unsigned int r; 310 unsigned int flag; 311 312 if (idx >= VIA_TABLE_SIZE) { 313 snd_printk(KERN_ERR "via82xx: too much table size!\n"); 314 return -EINVAL; 315 } 316 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); 317 r = PAGE_SIZE - (ofs % PAGE_SIZE); 318 if (rest < r) 319 r = rest; 320 rest -= r; 321 if (! rest) { 322 if (i == periods - 1) 323 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 324 else 325 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 326 } else 327 flag = 0; /* period continues to the next */ 328 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); 329 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 330 dev->idx_table[idx].offset = ofs; 331 dev->idx_table[idx].size = r; 332 ofs += r; 333 idx++; 334 } while (rest > 0); 335 } 336 dev->tbl_entries = idx; 337 dev->bufsize = periods * fragsize; 338 dev->bufsize2 = dev->bufsize / 2; 339 return 0; 340} 341 342 343static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 344 struct pci_dev *pci) 345{ 346 if (dev->table.area) { 347 snd_dma_free_pages(&dev->table); 348 dev->table.area = NULL; 349 } 350 kfree(dev->idx_table); 351 dev->idx_table = NULL; 352 return 0; 353} 354 355/* 356 * Basic I/O 357 */ 358 359static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) 360{ 361 return inl(VIAREG(chip, AC97)); 362} 363 364static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) 365{ 366 outl(val, VIAREG(chip, AC97)); 367} 368 369static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) 370{ 371 unsigned int timeout = 1000; /* 1ms */ 372 unsigned int val; 373 374 while (timeout-- > 0) { 375 udelay(1); 376 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 377 return val & 0xffff; 378 } 379 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", 380 secondary, snd_via82xx_codec_xread(chip)); 381 return -EIO; 382} 383 384static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) 385{ 386 unsigned int timeout = 1000; /* 1ms */ 387 unsigned int val, val1; 388 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 389 VIA_REG_AC97_SECONDARY_VALID; 390 391 while (timeout-- > 0) { 392 val = snd_via82xx_codec_xread(chip); 393 val1 = val & (VIA_REG_AC97_BUSY | stat); 394 if (val1 == stat) 395 return val & 0xffff; 396 udelay(1); 397 } 398 return -EIO; 399} 400 401static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) 402{ 403 struct via82xx_modem *chip = ac97->private_data; 404 int err; 405 err = snd_via82xx_codec_ready(chip, ac97->num); 406 /* here we need to wait fairly for long time.. */ 407 msleep(500); 408} 409 410static void snd_via82xx_codec_write(struct snd_ac97 *ac97, 411 unsigned short reg, 412 unsigned short val) 413{ 414 struct via82xx_modem *chip = ac97->private_data; 415 unsigned int xval; 416 if(reg == AC97_GPIO_STATUS) { 417 outl(val, VIAREG(chip, GPI_STATUS)); 418 return; 419 } 420 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 421 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 422 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 423 xval |= val << VIA_REG_AC97_DATA_SHIFT; 424 snd_via82xx_codec_xwrite(chip, xval); 425 snd_via82xx_codec_ready(chip, ac97->num); 426} 427 428static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) 429{ 430 struct via82xx_modem *chip = ac97->private_data; 431 unsigned int xval, val = 0xffff; 432 int again = 0; 433 434 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 435 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 436 xval |= VIA_REG_AC97_READ; 437 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 438 while (1) { 439 if (again++ > 3) { 440 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 441 ac97->num, snd_via82xx_codec_xread(chip)); 442 return 0xffff; 443 } 444 snd_via82xx_codec_xwrite(chip, xval); 445 udelay (20); 446 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 447 udelay(25); 448 val = snd_via82xx_codec_xread(chip); 449 break; 450 } 451 } 452 return val & 0xffff; 453} 454 455static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) 456{ 457 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 458 VIADEV_REG(viadev, OFFSET_CONTROL)); 459 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 460 udelay(50); 461 /* disable interrupts */ 462 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 463 /* clear interrupts */ 464 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 465 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 466 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 467 viadev->lastpos = 0; 468} 469 470 471/* 472 * Interrupt handler 473 */ 474 475static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) 476{ 477 struct via82xx_modem *chip = dev_id; 478 unsigned int status; 479 unsigned int i; 480 481 status = inl(VIAREG(chip, SGD_SHADOW)); 482 if (! (status & chip->intr_mask)) { 483 return IRQ_NONE; 484 } 485// _skip_sgd: 486 487 /* check status for each stream */ 488 spin_lock(&chip->reg_lock); 489 for (i = 0; i < chip->num_devs; i++) { 490 struct viadev *viadev = &chip->devs[i]; 491 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 492 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 493 if (! c_status) 494 continue; 495 if (viadev->substream && viadev->running) { 496 spin_unlock(&chip->reg_lock); 497 snd_pcm_period_elapsed(viadev->substream); 498 spin_lock(&chip->reg_lock); 499 } 500 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 501 } 502 spin_unlock(&chip->reg_lock); 503 return IRQ_HANDLED; 504} 505 506/* 507 * PCM callbacks 508 */ 509 510/* 511 * trigger callback 512 */ 513static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 514{ 515 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 516 struct viadev *viadev = substream->runtime->private_data; 517 unsigned char val = 0; 518 519 switch (cmd) { 520 case SNDRV_PCM_TRIGGER_START: 521 case SNDRV_PCM_TRIGGER_SUSPEND: 522 val |= VIA_REG_CTRL_START; 523 viadev->running = 1; 524 break; 525 case SNDRV_PCM_TRIGGER_STOP: 526 val = VIA_REG_CTRL_TERMINATE; 527 viadev->running = 0; 528 break; 529 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 530 val |= VIA_REG_CTRL_PAUSE; 531 viadev->running = 0; 532 break; 533 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 534 viadev->running = 1; 535 break; 536 default: 537 return -EINVAL; 538 } 539 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 540 if (cmd == SNDRV_PCM_TRIGGER_STOP) 541 snd_via82xx_channel_reset(chip, viadev); 542 return 0; 543} 544 545/* 546 * pointer callbacks 547 */ 548 549/* 550 * calculate the linear position at the given sg-buffer index and the rest count 551 */ 552 553#define check_invalid_pos(viadev,pos) \ 554 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ 555 viadev->lastpos < viadev->bufsize2)) 556 557static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx, 558 unsigned int count) 559{ 560 unsigned int size, res; 561 562 size = viadev->idx_table[idx].size; 563 res = viadev->idx_table[idx].offset + size - count; 564 565 /* check the validity of the calculated position */ 566 if (size < count) { 567 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", 568 (int)size, (int)count); 569 res = viadev->lastpos; 570 } else if (check_invalid_pos(viadev, res)) { 571#ifdef POINTER_DEBUG 572 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, " 573 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, " 574 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, 575 viadev->bufsize2, viadev->idx_table[idx].offset, 576 viadev->idx_table[idx].size, count); 577#endif 578 if (count && size < count) { 579 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " 580 "using last valid pointer\n"); 581 res = viadev->lastpos; 582 } else { 583 if (! count) 584 /* bogus count 0 on the DMA boundary? */ 585 res = viadev->idx_table[idx].offset; 586 else 587 /* count register returns full size 588 * when end of buffer is reached 589 */ 590 res = viadev->idx_table[idx].offset + size; 591 if (check_invalid_pos(viadev, res)) { 592 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), " 593 "using last valid pointer\n"); 594 res = viadev->lastpos; 595 } 596 } 597 } 598 viadev->lastpos = res; /* remember the last position */ 599 if (res >= viadev->bufsize) 600 res -= viadev->bufsize; 601 return res; 602} 603 604/* 605 * get the current pointer on via686 606 */ 607static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) 608{ 609 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 610 struct viadev *viadev = substream->runtime->private_data; 611 unsigned int idx, ptr, count, res; 612 613 snd_assert(viadev->tbl_entries, return 0); 614 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 615 return 0; 616 617 spin_lock(&chip->reg_lock); 618 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 619 /* The via686a does not have the current index register, 620 * so we need to calculate the index from CURR_PTR. 621 */ 622 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 623 if (ptr <= (unsigned int)viadev->table.addr) 624 idx = 0; 625 else /* CURR_PTR holds the address + 8 */ 626 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % 627 viadev->tbl_entries; 628 res = calc_linear_pos(viadev, idx, count); 629 spin_unlock(&chip->reg_lock); 630 631 return bytes_to_frames(substream->runtime, res); 632} 633 634/* 635 * hw_params callback: 636 * allocate the buffer and build up the buffer description table 637 */ 638static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, 639 struct snd_pcm_hw_params *hw_params) 640{ 641 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 642 struct viadev *viadev = substream->runtime->private_data; 643 int err; 644 645 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 646 if (err < 0) 647 return err; 648 err = build_via_table(viadev, substream, chip->pci, 649 params_periods(hw_params), 650 params_period_bytes(hw_params)); 651 if (err < 0) 652 return err; 653 654 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 655 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 656 657 return 0; 658} 659 660/* 661 * hw_free callback: 662 * clean up the buffer description table and release the buffer 663 */ 664static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) 665{ 666 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 667 struct viadev *viadev = substream->runtime->private_data; 668 669 clean_via_table(viadev, substream, chip->pci); 670 snd_pcm_lib_free_pages(substream); 671 return 0; 672} 673 674 675/* 676 * set up the table pointer 677 */ 678static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) 679{ 680 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 681 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 682 udelay(20); 683 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 684} 685 686/* 687 * prepare callback for playback and capture 688 */ 689static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) 690{ 691 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 692 struct viadev *viadev = substream->runtime->private_data; 693 694 snd_via82xx_channel_reset(chip, viadev); 695 /* this must be set after channel_reset */ 696 snd_via82xx_set_table_ptr(chip, viadev); 697 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 698 VIADEV_REG(viadev, OFFSET_TYPE)); 699 return 0; 700} 701 702/* 703 * pcm hardware definition, identical for both playback and capture 704 */ 705static struct snd_pcm_hardware snd_via82xx_hw = 706{ 707 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 708 SNDRV_PCM_INFO_BLOCK_TRANSFER | 709 SNDRV_PCM_INFO_MMAP_VALID | 710 /* SNDRV_PCM_INFO_RESUME | */ 711 SNDRV_PCM_INFO_PAUSE), 712 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 713 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 714 .rate_min = 8000, 715 .rate_max = 16000, 716 .channels_min = 1, 717 .channels_max = 1, 718 .buffer_bytes_max = 128 * 1024, 719 .period_bytes_min = 32, 720 .period_bytes_max = 128 * 1024, 721 .periods_min = 2, 722 .periods_max = VIA_TABLE_SIZE / 2, 723 .fifo_size = 0, 724}; 725 726 727/* 728 * open callback skeleton 729 */ 730static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, 731 struct snd_pcm_substream *substream) 732{ 733 struct snd_pcm_runtime *runtime = substream->runtime; 734 int err; 735 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 736 static struct snd_pcm_hw_constraint_list hw_constraints_rates = { 737 .count = ARRAY_SIZE(rates), 738 .list = rates, 739 .mask = 0, 740 }; 741 742 runtime->hw = snd_via82xx_hw; 743 744 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 745 &hw_constraints_rates)) < 0) 746 return err; 747 748 /* we may remove following constaint when we modify table entries 749 in interrupt */ 750 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 751 return err; 752 753 runtime->private_data = viadev; 754 viadev->substream = substream; 755 756 return 0; 757} 758 759 760/* 761 * open callback for playback 762 */ 763static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) 764{ 765 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 766 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; 767 768 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 769} 770 771/* 772 * open callback for capture 773 */ 774static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) 775{ 776 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 777 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 778 779 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 780} 781 782/* 783 * close callback 784 */ 785static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) 786{ 787 struct viadev *viadev = substream->runtime->private_data; 788 789 viadev->substream = NULL; 790 return 0; 791} 792 793 794/* via686 playback callbacks */ 795static struct snd_pcm_ops snd_via686_playback_ops = { 796 .open = snd_via82xx_playback_open, 797 .close = snd_via82xx_pcm_close, 798 .ioctl = snd_pcm_lib_ioctl, 799 .hw_params = snd_via82xx_hw_params, 800 .hw_free = snd_via82xx_hw_free, 801 .prepare = snd_via82xx_pcm_prepare, 802 .trigger = snd_via82xx_pcm_trigger, 803 .pointer = snd_via686_pcm_pointer, 804 .page = snd_pcm_sgbuf_ops_page, 805}; 806 807/* via686 capture callbacks */ 808static struct snd_pcm_ops snd_via686_capture_ops = { 809 .open = snd_via82xx_capture_open, 810 .close = snd_via82xx_pcm_close, 811 .ioctl = snd_pcm_lib_ioctl, 812 .hw_params = snd_via82xx_hw_params, 813 .hw_free = snd_via82xx_hw_free, 814 .prepare = snd_via82xx_pcm_prepare, 815 .trigger = snd_via82xx_pcm_trigger, 816 .pointer = snd_via686_pcm_pointer, 817 .page = snd_pcm_sgbuf_ops_page, 818}; 819 820 821static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, 822 int direction) 823{ 824 chip->devs[idx].reg_offset = reg_offset; 825 chip->devs[idx].direction = direction; 826 chip->devs[idx].port = chip->port + reg_offset; 827} 828 829/* 830 * create a pcm instance for via686a/b 831 */ 832static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip) 833{ 834 struct snd_pcm *pcm; 835 int err; 836 837 chip->playback_devno = 0; 838 chip->capture_devno = 1; 839 chip->num_devs = 2; 840 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 841 842 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 843 if (err < 0) 844 return err; 845 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 846 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 847 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 848 pcm->private_data = chip; 849 strcpy(pcm->name, chip->card->shortname); 850 chip->pcms[0] = pcm; 851 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 852 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 853 854 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 855 snd_dma_pci_data(chip->pci), 856 64*1024, 128*1024)) < 0) 857 return err; 858 859 return 0; 860} 861 862 863/* 864 * Mixer part 865 */ 866 867 868static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) 869{ 870 struct via82xx_modem *chip = bus->private_data; 871 chip->ac97_bus = NULL; 872} 873 874static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) 875{ 876 struct via82xx_modem *chip = ac97->private_data; 877 chip->ac97 = NULL; 878} 879 880 881static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip) 882{ 883 struct snd_ac97_template ac97; 884 int err; 885 static struct snd_ac97_bus_ops ops = { 886 .write = snd_via82xx_codec_write, 887 .read = snd_via82xx_codec_read, 888 .wait = snd_via82xx_codec_wait, 889 }; 890 891 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 892 return err; 893 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 894 chip->ac97_bus->clock = chip->ac97_clock; 895 896 memset(&ac97, 0, sizeof(ac97)); 897 ac97.private_data = chip; 898 ac97.private_free = snd_via82xx_mixer_free_ac97; 899 ac97.pci = chip->pci; 900 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 901 ac97.num = chip->ac97_secondary; 902 903 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 904 return err; 905 906 return 0; 907} 908 909 910/* 911 * proc interface 912 */ 913static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 914{ 915 struct via82xx_modem *chip = entry->private_data; 916 int i; 917 918 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 919 for (i = 0; i < 0xa0; i += 4) { 920 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 921 } 922} 923 924static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip) 925{ 926 struct snd_info_entry *entry; 927 928 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 929 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); 930} 931 932/* 933 * 934 */ 935 936static int snd_via82xx_chip_init(struct via82xx_modem *chip) 937{ 938 unsigned int val; 939 unsigned long end_time; 940 unsigned char pval; 941 942 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 943 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 944 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 945 udelay(100); 946 } 947 948 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 949 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 950 /* deassert ACLink reset, force SYNC */ 951 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 952 VIA_ACLINK_CTRL_ENABLE | 953 VIA_ACLINK_CTRL_RESET | 954 VIA_ACLINK_CTRL_SYNC); 955 udelay(100); 956 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 957 udelay(100); 958 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 959 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 960 udelay(100); 961 } 962 963 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 964 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 965 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 966 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 967 udelay(100); 968 } 969 970 /* wait until codec ready */ 971 end_time = jiffies + msecs_to_jiffies(750); 972 do { 973 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 974 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 975 break; 976 schedule_timeout_uninterruptible(1); 977 } while (time_before(jiffies, end_time)); 978 979 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 980 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); 981 982 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 983 VIA_REG_AC97_SECONDARY_VALID | 984 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 985 end_time = jiffies + msecs_to_jiffies(750); 986 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 987 VIA_REG_AC97_SECONDARY_VALID | 988 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 989 do { 990 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 991 chip->ac97_secondary = 1; 992 goto __ac97_ok2; 993 } 994 schedule_timeout_interruptible(1); 995 } while (time_before(jiffies, end_time)); 996 /* This is ok, the most of motherboards have only one codec */ 997 998 __ac97_ok2: 999 1000 /* route FM trap to IRQ, disable FM trap */ 1001 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1002 /* disable all GPI interrupts */ 1003 outl(0, VIAREG(chip, GPI_INTR)); 1004 1005 return 0; 1006} 1007 1008#ifdef CONFIG_PM 1009/* 1010 * power management 1011 */ 1012static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state) 1013{ 1014 struct snd_card *card = pci_get_drvdata(pci); 1015 struct via82xx_modem *chip = card->private_data; 1016 int i; 1017 1018 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1019 for (i = 0; i < 2; i++) 1020 snd_pcm_suspend_all(chip->pcms[i]); 1021 for (i = 0; i < chip->num_devs; i++) 1022 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1023 synchronize_irq(chip->irq); 1024 snd_ac97_suspend(chip->ac97); 1025 1026 pci_disable_device(pci); 1027 pci_save_state(pci); 1028 pci_set_power_state(pci, pci_choose_state(pci, state)); 1029 return 0; 1030} 1031 1032static int snd_via82xx_resume(struct pci_dev *pci) 1033{ 1034 struct snd_card *card = pci_get_drvdata(pci); 1035 struct via82xx_modem *chip = card->private_data; 1036 int i; 1037 1038 pci_set_power_state(pci, PCI_D0); 1039 pci_restore_state(pci); 1040 if (pci_enable_device(pci) < 0) { 1041 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, " 1042 "disabling device\n"); 1043 snd_card_disconnect(card); 1044 return -EIO; 1045 } 1046 pci_set_master(pci); 1047 1048 snd_via82xx_chip_init(chip); 1049 1050 snd_ac97_resume(chip->ac97); 1051 1052 for (i = 0; i < chip->num_devs; i++) 1053 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1054 1055 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1056 return 0; 1057} 1058#endif /* CONFIG_PM */ 1059 1060static int snd_via82xx_free(struct via82xx_modem *chip) 1061{ 1062 unsigned int i; 1063 1064 if (chip->irq < 0) 1065 goto __end_hw; 1066 /* disable interrupts */ 1067 for (i = 0; i < chip->num_devs; i++) 1068 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1069 synchronize_irq(chip->irq); 1070 __end_hw: 1071 if (chip->irq >= 0) 1072 free_irq(chip->irq, chip); 1073 pci_release_regions(chip->pci); 1074 pci_disable_device(chip->pci); 1075 kfree(chip); 1076 return 0; 1077} 1078 1079static int snd_via82xx_dev_free(struct snd_device *device) 1080{ 1081 struct via82xx_modem *chip = device->device_data; 1082 return snd_via82xx_free(chip); 1083} 1084 1085static int __devinit snd_via82xx_create(struct snd_card *card, 1086 struct pci_dev *pci, 1087 int chip_type, 1088 int revision, 1089 unsigned int ac97_clock, 1090 struct via82xx_modem ** r_via) 1091{ 1092 struct via82xx_modem *chip; 1093 int err; 1094 static struct snd_device_ops ops = { 1095 .dev_free = snd_via82xx_dev_free, 1096 }; 1097 1098 if ((err = pci_enable_device(pci)) < 0) 1099 return err; 1100 1101 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 1102 pci_disable_device(pci); 1103 return -ENOMEM; 1104 } 1105 1106 spin_lock_init(&chip->reg_lock); 1107 chip->card = card; 1108 chip->pci = pci; 1109 chip->irq = -1; 1110 1111 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1112 kfree(chip); 1113 pci_disable_device(pci); 1114 return err; 1115 } 1116 chip->port = pci_resource_start(pci, 0); 1117 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, 1118 card->driver, chip)) { 1119 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); 1120 snd_via82xx_free(chip); 1121 return -EBUSY; 1122 } 1123 chip->irq = pci->irq; 1124 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1125 chip->ac97_clock = ac97_clock; 1126 synchronize_irq(chip->irq); 1127 1128 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1129 snd_via82xx_free(chip); 1130 return err; 1131 } 1132 1133 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1134 snd_via82xx_free(chip); 1135 return err; 1136 } 1137 1138 /* The 8233 ac97 controller does not implement the master bit 1139 * in the pci command register. IMHO this is a violation of the PCI spec. 1140 * We call pci_set_master here because it does not hurt. */ 1141 pci_set_master(pci); 1142 1143 snd_card_set_dev(card, &pci->dev); 1144 1145 *r_via = chip; 1146 return 0; 1147} 1148 1149 1150static int __devinit snd_via82xx_probe(struct pci_dev *pci, 1151 const struct pci_device_id *pci_id) 1152{ 1153 struct snd_card *card; 1154 struct via82xx_modem *chip; 1155 unsigned char revision; 1156 int chip_type = 0, card_type; 1157 unsigned int i; 1158 int err; 1159 1160 card = snd_card_new(index, id, THIS_MODULE, 0); 1161 if (card == NULL) 1162 return -ENOMEM; 1163 1164 card_type = pci_id->driver_data; 1165 pci_read_config_byte(pci, PCI_REVISION_ID, &revision); 1166 switch (card_type) { 1167 case TYPE_CARD_VIA82XX_MODEM: 1168 strcpy(card->driver, "VIA82XX-MODEM"); 1169 sprintf(card->shortname, "VIA 82XX modem"); 1170 break; 1171 default: 1172 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1173 err = -EINVAL; 1174 goto __error; 1175 } 1176 1177 if ((err = snd_via82xx_create(card, pci, chip_type, revision, 1178 ac97_clock, &chip)) < 0) 1179 goto __error; 1180 card->private_data = chip; 1181 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1182 goto __error; 1183 1184 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1185 goto __error; 1186 1187 /* disable interrupts */ 1188 for (i = 0; i < chip->num_devs; i++) 1189 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1190 1191 sprintf(card->longname, "%s at 0x%lx, irq %d", 1192 card->shortname, chip->port, chip->irq); 1193 1194 snd_via82xx_proc_init(chip); 1195 1196 if ((err = snd_card_register(card)) < 0) { 1197 snd_card_free(card); 1198 return err; 1199 } 1200 pci_set_drvdata(pci, card); 1201 return 0; 1202 1203 __error: 1204 snd_card_free(card); 1205 return err; 1206} 1207 1208static void __devexit snd_via82xx_remove(struct pci_dev *pci) 1209{ 1210 snd_card_free(pci_get_drvdata(pci)); 1211 pci_set_drvdata(pci, NULL); 1212} 1213 1214static struct pci_driver driver = { 1215 .name = "VIA 82xx Modem", 1216 .id_table = snd_via82xx_modem_ids, 1217 .probe = snd_via82xx_probe, 1218 .remove = __devexit_p(snd_via82xx_remove), 1219#ifdef CONFIG_PM 1220 .suspend = snd_via82xx_suspend, 1221 .resume = snd_via82xx_resume, 1222#endif 1223}; 1224 1225static int __init alsa_card_via82xx_init(void) 1226{ 1227 return pci_register_driver(&driver); 1228} 1229 1230static void __exit alsa_card_via82xx_exit(void) 1231{ 1232 pci_unregister_driver(&driver); 1233} 1234 1235module_init(alsa_card_via82xx_init) 1236module_exit(alsa_card_via82xx_exit) 1237