1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * ALSA modem driver for VIA VT82xx (South Bridge) 4 * 5 * VT82C686A/B/C, VT8233A/C, VT8235 6 * 7 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> 8 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com> 9 * 2002 Takashi Iwai <tiwai@suse.de> 10 */ 11 12 /* 13 * Changes: 14 * 15 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org> 16 * Modified from original audio driver 'via82xx.c' to support AC97 17 * modems. 18 */ 19 20 #include <linux/io.h> 21 #include <linux/delay.h> 22 #include <linux/interrupt.h> 23 #include <linux/init.h> 24 #include <linux/pci.h> 25 #include <linux/slab.h> 26 #include <linux/module.h> 27 #include <sound/core.h> 28 #include <sound/pcm.h> 29 #include <sound/pcm_params.h> 30 #include <sound/info.h> 31 #include <sound/ac97_codec.h> 32 #include <sound/initval.h> 33 34 #if 0 35 #define POINTER_DEBUG 36 #endif 37 38 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 39 MODULE_DESCRIPTION("VIA VT82xx modem"); 40 MODULE_LICENSE("GPL"); 41 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); 42 43 static int index = -2; /* Exclude the first card */ 44 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 45 static int ac97_clock = 48000; 46 47 module_param(index, int, 0444); 48 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); 49 module_param(id, charp, 0444); 50 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); 51 module_param(ac97_clock, int, 0444); 52 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 53 54 /* just for backward compatibility */ 55 static bool enable; 56 module_param(enable, bool, 0444); 57 58 59 /* 60 * Direct registers 61 */ 62 63 #define VIAREG(via, x) ((via)->port + VIA_REG_##x) 64 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) 65 66 /* common offsets */ 67 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ 68 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */ 69 #define VIA_REG_STAT_PAUSED 0x40 /* RO */ 70 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ 71 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */ 72 #define VIA_REG_STAT_EOL 0x02 /* RWC */ 73 #define VIA_REG_STAT_FLAG 0x01 /* RWC */ 74 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ 75 #define VIA_REG_CTRL_START 0x80 /* WO */ 76 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ 77 #define VIA_REG_CTRL_AUTOSTART 0x20 78 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */ 79 #define VIA_REG_CTRL_INT_STOP 0x04 80 #define VIA_REG_CTRL_INT_EOL 0x02 81 #define VIA_REG_CTRL_INT_FLAG 0x01 82 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ 83 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) 84 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ 85 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ 86 #define VIA_REG_TYPE_16BIT 0x20 /* RW */ 87 #define VIA_REG_TYPE_STEREO 0x10 /* RW */ 88 #define VIA_REG_TYPE_INT_LLINE 0x00 89 #define VIA_REG_TYPE_INT_LSAMPLE 0x04 90 #define VIA_REG_TYPE_INT_LESSONE 0x08 91 #define VIA_REG_TYPE_INT_MASK 0x0c 92 #define VIA_REG_TYPE_INT_EOL 0x02 93 #define VIA_REG_TYPE_INT_FLAG 0x01 94 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ 95 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ 96 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ 97 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ 98 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ 99 100 #define DEFINE_VIA_REGSET(name,val) \ 101 enum {\ 102 VIA_REG_##name##_STATUS = (val),\ 103 VIA_REG_##name##_CONTROL = (val) + 0x01,\ 104 VIA_REG_##name##_TYPE = (val) + 0x02,\ 105 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ 106 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ 107 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ 108 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ 109 } 110 111 /* modem block */ 112 DEFINE_VIA_REGSET(MO, 0x40); 113 DEFINE_VIA_REGSET(MI, 0x50); 114 115 /* AC'97 */ 116 #define VIA_REG_AC97 0x80 /* dword */ 117 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30) 118 #define VIA_REG_AC97_CODEC_ID_SHIFT 30 119 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 120 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 121 #define VIA_REG_AC97_SECONDARY_VALID (1<<27) 122 #define VIA_REG_AC97_PRIMARY_VALID (1<<25) 123 #define VIA_REG_AC97_BUSY (1<<24) 124 #define VIA_REG_AC97_READ (1<<23) 125 #define VIA_REG_AC97_CMD_SHIFT 16 126 #define VIA_REG_AC97_CMD_MASK 0x7e 127 #define VIA_REG_AC97_DATA_SHIFT 0 128 #define VIA_REG_AC97_DATA_MASK 0xffff 129 130 #define VIA_REG_SGD_SHADOW 0x84 /* dword */ 131 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0) 132 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1) 133 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2) 134 #define VIA_REG_SGD_STAT_PB_EOL (1<<4) 135 #define VIA_REG_SGD_STAT_CP_EOL (1<<5) 136 #define VIA_REG_SGD_STAT_FM_EOL (1<<6) 137 #define VIA_REG_SGD_STAT_PB_STOP (1<<8) 138 #define VIA_REG_SGD_STAT_CP_STOP (1<<9) 139 #define VIA_REG_SGD_STAT_FM_STOP (1<<10) 140 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) 141 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) 142 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) 143 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16) 144 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17) 145 #define VIA_REG_SGD_STAT_MR_EOL (1<<20) 146 #define VIA_REG_SGD_STAT_MW_EOL (1<<21) 147 #define VIA_REG_SGD_STAT_MR_STOP (1<<24) 148 #define VIA_REG_SGD_STAT_MW_STOP (1<<25) 149 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) 150 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) 151 152 #define VIA_REG_GPI_STATUS 0x88 153 #define VIA_REG_GPI_INTR 0x8c 154 155 #define VIA_TBL_BIT_FLAG 0x40000000 156 #define VIA_TBL_BIT_EOL 0x80000000 157 158 /* pci space */ 159 #define VIA_ACLINK_STAT 0x40 160 #define VIA_ACLINK_C11_READY 0x20 161 #define VIA_ACLINK_C10_READY 0x10 162 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ 163 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ 164 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ 165 #define VIA_ACLINK_CTRL 0x41 166 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ 167 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ 168 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ 169 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ 170 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ 171 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ 172 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ 173 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ 174 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ 175 VIA_ACLINK_CTRL_RESET|\ 176 VIA_ACLINK_CTRL_PCM) 177 #define VIA_FUNC_ENABLE 0x42 178 #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ 179 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ 180 #define VIA_FUNC_RX2C_WRITE 0x20 181 #define VIA_FUNC_SB_FIFO_EMPTY 0x10 182 #define VIA_FUNC_ENABLE_GAME 0x08 183 #define VIA_FUNC_ENABLE_FM 0x04 184 #define VIA_FUNC_ENABLE_MIDI 0x02 185 #define VIA_FUNC_ENABLE_SB 0x01 186 #define VIA_PNP_CONTROL 0x43 187 #define VIA_MC97_CTRL 0x44 188 #define VIA_MC97_CTRL_ENABLE 0x80 189 #define VIA_MC97_CTRL_SECONDARY 0x40 190 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ 191 VIA_MC97_CTRL_SECONDARY) 192 193 194 /* 195 * pcm stream 196 */ 197 198 struct snd_via_sg_table { 199 unsigned int offset; 200 unsigned int size; 201 } ; 202 203 #define VIA_TABLE_SIZE 255 204 205 struct viadev { 206 unsigned int reg_offset; 207 unsigned long port; 208 int direction; /* playback = 0, capture = 1 */ 209 struct snd_pcm_substream *substream; 210 int running; 211 unsigned int tbl_entries; /* # descriptors */ 212 struct snd_dma_buffer table; 213 struct snd_via_sg_table *idx_table; 214 /* for recovery from the unexpected pointer */ 215 unsigned int lastpos; 216 unsigned int bufsize; 217 unsigned int bufsize2; 218 }; 219 220 enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 221 222 #define VIA_MAX_MODEM_DEVS 2 223 224 struct via82xx_modem { 225 int irq; 226 227 unsigned long port; 228 229 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 230 231 struct pci_dev *pci; 232 struct snd_card *card; 233 234 unsigned int num_devs; 235 unsigned int playback_devno, capture_devno; 236 struct viadev devs[VIA_MAX_MODEM_DEVS]; 237 238 struct snd_pcm *pcms[2]; 239 240 struct snd_ac97_bus *ac97_bus; 241 struct snd_ac97 *ac97; 242 unsigned int ac97_clock; 243 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 244 245 spinlock_t reg_lock; 246 struct snd_info_entry *proc_entry; 247 }; 248 249 static const struct pci_device_id snd_via82xx_modem_ids[] = { 250 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, 251 { 0, } 252 }; 253 254 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 255 256 /* 257 */ 258 259 /* 260 * allocate and initialize the descriptor buffers 261 * periods = number of periods 262 * fragsize = period size in bytes 263 */ 264 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 265 struct pci_dev *pci, 266 unsigned int periods, unsigned int fragsize) 267 { 268 unsigned int i, idx, ofs, rest; 269 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 270 271 if (dev->table.area == NULL) { 272 /* the start of each lists must be aligned to 8 bytes, 273 * but the kernel pages are much bigger, so we don't care 274 */ 275 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev, 276 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 277 &dev->table) < 0) 278 return -ENOMEM; 279 } 280 if (! dev->idx_table) { 281 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE, 282 sizeof(*dev->idx_table), 283 GFP_KERNEL); 284 if (! dev->idx_table) 285 return -ENOMEM; 286 } 287 288 /* fill the entries */ 289 idx = 0; 290 ofs = 0; 291 for (i = 0; i < periods; i++) { 292 rest = fragsize; 293 /* fill descriptors for a period. 294 * a period can be split to several descriptors if it's 295 * over page boundary. 296 */ 297 do { 298 unsigned int r; 299 unsigned int flag; 300 unsigned int addr; 301 302 if (idx >= VIA_TABLE_SIZE) { 303 dev_err(&pci->dev, "too much table size!\n"); 304 return -EINVAL; 305 } 306 addr = snd_pcm_sgbuf_get_addr(substream, ofs); 307 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); 308 r = PAGE_SIZE - (ofs % PAGE_SIZE); 309 if (rest < r) 310 r = rest; 311 rest -= r; 312 if (! rest) { 313 if (i == periods - 1) 314 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 315 else 316 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 317 } else 318 flag = 0; /* period continues to the next */ 319 /* 320 dev_dbg(&pci->dev, 321 "tbl %d: at %d size %d (rest %d)\n", 322 idx, ofs, r, rest); 323 */ 324 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 325 dev->idx_table[idx].offset = ofs; 326 dev->idx_table[idx].size = r; 327 ofs += r; 328 idx++; 329 } while (rest > 0); 330 } 331 dev->tbl_entries = idx; 332 dev->bufsize = periods * fragsize; 333 dev->bufsize2 = dev->bufsize / 2; 334 return 0; 335 } 336 337 338 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 339 struct pci_dev *pci) 340 { 341 if (dev->table.area) { 342 snd_dma_free_pages(&dev->table); 343 dev->table.area = NULL; 344 } 345 kfree(dev->idx_table); 346 dev->idx_table = NULL; 347 return 0; 348 } 349 350 /* 351 * Basic I/O 352 */ 353 354 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) 355 { 356 return inl(VIAREG(chip, AC97)); 357 } 358 359 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) 360 { 361 outl(val, VIAREG(chip, AC97)); 362 } 363 364 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) 365 { 366 unsigned int timeout = 1000; /* 1ms */ 367 unsigned int val; 368 369 while (timeout-- > 0) { 370 udelay(1); 371 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 372 return val & 0xffff; 373 } 374 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", 375 secondary, snd_via82xx_codec_xread(chip)); 376 return -EIO; 377 } 378 379 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) 380 { 381 unsigned int timeout = 1000; /* 1ms */ 382 unsigned int val, val1; 383 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 384 VIA_REG_AC97_SECONDARY_VALID; 385 386 while (timeout-- > 0) { 387 val = snd_via82xx_codec_xread(chip); 388 val1 = val & (VIA_REG_AC97_BUSY | stat); 389 if (val1 == stat) 390 return val & 0xffff; 391 udelay(1); 392 } 393 return -EIO; 394 } 395 396 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) 397 { 398 struct via82xx_modem *chip = ac97->private_data; 399 int err; 400 err = snd_via82xx_codec_ready(chip, ac97->num); 401 /* here we need to wait fairly for long time.. */ 402 msleep(500); 403 } 404 405 static void snd_via82xx_codec_write(struct snd_ac97 *ac97, 406 unsigned short reg, 407 unsigned short val) 408 { 409 struct via82xx_modem *chip = ac97->private_data; 410 unsigned int xval; 411 if(reg == AC97_GPIO_STATUS) { 412 outl(val, VIAREG(chip, GPI_STATUS)); 413 return; 414 } 415 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 416 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 417 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 418 xval |= val << VIA_REG_AC97_DATA_SHIFT; 419 snd_via82xx_codec_xwrite(chip, xval); 420 snd_via82xx_codec_ready(chip, ac97->num); 421 } 422 423 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) 424 { 425 struct via82xx_modem *chip = ac97->private_data; 426 unsigned int xval, val = 0xffff; 427 int again = 0; 428 429 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 430 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 431 xval |= VIA_REG_AC97_READ; 432 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 433 while (1) { 434 if (again++ > 3) { 435 dev_err(chip->card->dev, 436 "codec_read: codec %i is not valid [0x%x]\n", 437 ac97->num, snd_via82xx_codec_xread(chip)); 438 return 0xffff; 439 } 440 snd_via82xx_codec_xwrite(chip, xval); 441 udelay (20); 442 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 443 udelay(25); 444 val = snd_via82xx_codec_xread(chip); 445 break; 446 } 447 } 448 return val & 0xffff; 449 } 450 451 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) 452 { 453 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 454 VIADEV_REG(viadev, OFFSET_CONTROL)); 455 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 456 udelay(50); 457 /* disable interrupts */ 458 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 459 /* clear interrupts */ 460 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 461 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 462 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 463 viadev->lastpos = 0; 464 } 465 466 467 /* 468 * Interrupt handler 469 */ 470 471 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) 472 { 473 struct via82xx_modem *chip = dev_id; 474 unsigned int status; 475 unsigned int i; 476 477 status = inl(VIAREG(chip, SGD_SHADOW)); 478 if (! (status & chip->intr_mask)) { 479 return IRQ_NONE; 480 } 481 // _skip_sgd: 482 483 /* check status for each stream */ 484 spin_lock(&chip->reg_lock); 485 for (i = 0; i < chip->num_devs; i++) { 486 struct viadev *viadev = &chip->devs[i]; 487 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 488 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 489 if (! c_status) 490 continue; 491 if (viadev->substream && viadev->running) { 492 spin_unlock(&chip->reg_lock); 493 snd_pcm_period_elapsed(viadev->substream); 494 spin_lock(&chip->reg_lock); 495 } 496 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 497 } 498 spin_unlock(&chip->reg_lock); 499 return IRQ_HANDLED; 500 } 501 502 /* 503 * PCM callbacks 504 */ 505 506 /* 507 * trigger callback 508 */ 509 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 510 { 511 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 512 struct viadev *viadev = substream->runtime->private_data; 513 unsigned char val = 0; 514 515 switch (cmd) { 516 case SNDRV_PCM_TRIGGER_START: 517 case SNDRV_PCM_TRIGGER_SUSPEND: 518 val |= VIA_REG_CTRL_START; 519 viadev->running = 1; 520 break; 521 case SNDRV_PCM_TRIGGER_STOP: 522 val = VIA_REG_CTRL_TERMINATE; 523 viadev->running = 0; 524 break; 525 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 526 val |= VIA_REG_CTRL_PAUSE; 527 viadev->running = 0; 528 break; 529 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 530 viadev->running = 1; 531 break; 532 default: 533 return -EINVAL; 534 } 535 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 536 if (cmd == SNDRV_PCM_TRIGGER_STOP) 537 snd_via82xx_channel_reset(chip, viadev); 538 return 0; 539 } 540 541 /* 542 * pointer callbacks 543 */ 544 545 /* 546 * calculate the linear position at the given sg-buffer index and the rest count 547 */ 548 549 #define check_invalid_pos(viadev,pos) \ 550 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ 551 viadev->lastpos < viadev->bufsize2)) 552 553 static inline unsigned int calc_linear_pos(struct via82xx_modem *chip, 554 struct viadev *viadev, 555 unsigned int idx, 556 unsigned int count) 557 { 558 unsigned int size, res; 559 560 size = viadev->idx_table[idx].size; 561 res = viadev->idx_table[idx].offset + size - count; 562 563 /* check the validity of the calculated position */ 564 if (size < count) { 565 dev_err(chip->card->dev, 566 "invalid via82xx_cur_ptr (size = %d, count = %d)\n", 567 (int)size, (int)count); 568 res = viadev->lastpos; 569 } else if (check_invalid_pos(viadev, res)) { 570 #ifdef POINTER_DEBUG 571 dev_dbg(chip->card->dev, 572 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", 573 idx, viadev->tbl_entries, viadev->lastpos, 574 viadev->bufsize2, viadev->idx_table[idx].offset, 575 viadev->idx_table[idx].size, count); 576 #endif 577 if (count && size < count) { 578 dev_dbg(chip->card->dev, 579 "invalid via82xx_cur_ptr, using last valid pointer\n"); 580 res = viadev->lastpos; 581 } else { 582 if (! count) 583 /* bogus count 0 on the DMA boundary? */ 584 res = viadev->idx_table[idx].offset; 585 else 586 /* count register returns full size 587 * when end of buffer is reached 588 */ 589 res = viadev->idx_table[idx].offset + size; 590 if (check_invalid_pos(viadev, res)) { 591 dev_dbg(chip->card->dev, 592 "invalid via82xx_cur_ptr (2), using last valid pointer\n"); 593 res = viadev->lastpos; 594 } 595 } 596 } 597 viadev->lastpos = res; /* remember the last position */ 598 if (res >= viadev->bufsize) 599 res -= viadev->bufsize; 600 return res; 601 } 602 603 /* 604 * get the current pointer on via686 605 */ 606 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) 607 { 608 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 609 struct viadev *viadev = substream->runtime->private_data; 610 unsigned int idx, ptr, count, res; 611 612 if (snd_BUG_ON(!viadev->tbl_entries)) 613 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(chip, 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 */ 638 static 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 */ 664 static 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 */ 678 static 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 */ 689 static 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 */ 705 static const 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 */ 730 static 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 const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 736 static const 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 */ 763 static 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 */ 774 static 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 */ 785 static 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 */ 795 static const 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 }; 805 806 /* via686 capture callbacks */ 807 static const struct snd_pcm_ops snd_via686_capture_ops = { 808 .open = snd_via82xx_capture_open, 809 .close = snd_via82xx_pcm_close, 810 .ioctl = snd_pcm_lib_ioctl, 811 .hw_params = snd_via82xx_hw_params, 812 .hw_free = snd_via82xx_hw_free, 813 .prepare = snd_via82xx_pcm_prepare, 814 .trigger = snd_via82xx_pcm_trigger, 815 .pointer = snd_via686_pcm_pointer, 816 }; 817 818 819 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, 820 int direction) 821 { 822 chip->devs[idx].reg_offset = reg_offset; 823 chip->devs[idx].direction = direction; 824 chip->devs[idx].port = chip->port + reg_offset; 825 } 826 827 /* 828 * create a pcm instance for via686a/b 829 */ 830 static int snd_via686_pcm_new(struct via82xx_modem *chip) 831 { 832 struct snd_pcm *pcm; 833 int err; 834 835 chip->playback_devno = 0; 836 chip->capture_devno = 1; 837 chip->num_devs = 2; 838 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 839 840 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 841 if (err < 0) 842 return err; 843 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 844 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 845 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 846 pcm->private_data = chip; 847 strcpy(pcm->name, chip->card->shortname); 848 chip->pcms[0] = pcm; 849 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 850 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 851 852 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 853 &chip->pci->dev, 854 64*1024, 128*1024); 855 return 0; 856 } 857 858 859 /* 860 * Mixer part 861 */ 862 863 864 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) 865 { 866 struct via82xx_modem *chip = bus->private_data; 867 chip->ac97_bus = NULL; 868 } 869 870 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) 871 { 872 struct via82xx_modem *chip = ac97->private_data; 873 chip->ac97 = NULL; 874 } 875 876 877 static int snd_via82xx_mixer_new(struct via82xx_modem *chip) 878 { 879 struct snd_ac97_template ac97; 880 int err; 881 static struct snd_ac97_bus_ops ops = { 882 .write = snd_via82xx_codec_write, 883 .read = snd_via82xx_codec_read, 884 .wait = snd_via82xx_codec_wait, 885 }; 886 887 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 888 return err; 889 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 890 chip->ac97_bus->clock = chip->ac97_clock; 891 892 memset(&ac97, 0, sizeof(ac97)); 893 ac97.private_data = chip; 894 ac97.private_free = snd_via82xx_mixer_free_ac97; 895 ac97.pci = chip->pci; 896 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 897 ac97.num = chip->ac97_secondary; 898 899 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 900 return err; 901 902 return 0; 903 } 904 905 906 /* 907 * proc interface 908 */ 909 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 910 { 911 struct via82xx_modem *chip = entry->private_data; 912 int i; 913 914 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 915 for (i = 0; i < 0xa0; i += 4) { 916 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 917 } 918 } 919 920 static void snd_via82xx_proc_init(struct via82xx_modem *chip) 921 { 922 snd_card_ro_proc_new(chip->card, "via82xx", chip, 923 snd_via82xx_proc_read); 924 } 925 926 /* 927 * 928 */ 929 930 static int snd_via82xx_chip_init(struct via82xx_modem *chip) 931 { 932 unsigned int val; 933 unsigned long end_time; 934 unsigned char pval; 935 936 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 937 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 938 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 939 udelay(100); 940 } 941 942 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 943 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 944 /* deassert ACLink reset, force SYNC */ 945 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 946 VIA_ACLINK_CTRL_ENABLE | 947 VIA_ACLINK_CTRL_RESET | 948 VIA_ACLINK_CTRL_SYNC); 949 udelay(100); 950 #if 1 /* FIXME: should we do full reset here for all chip models? */ 951 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 952 udelay(100); 953 #else 954 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 955 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 956 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 957 udelay(2); 958 #endif 959 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 960 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 961 udelay(100); 962 } 963 964 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 965 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 966 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 967 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 968 udelay(100); 969 } 970 971 /* wait until codec ready */ 972 end_time = jiffies + msecs_to_jiffies(750); 973 do { 974 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 975 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 976 break; 977 schedule_timeout_uninterruptible(1); 978 } while (time_before(jiffies, end_time)); 979 980 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 981 dev_err(chip->card->dev, 982 "AC'97 codec is not ready [0x%x]\n", val); 983 984 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 985 VIA_REG_AC97_SECONDARY_VALID | 986 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 987 end_time = jiffies + msecs_to_jiffies(750); 988 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 989 VIA_REG_AC97_SECONDARY_VALID | 990 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 991 do { 992 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 993 chip->ac97_secondary = 1; 994 goto __ac97_ok2; 995 } 996 schedule_timeout_uninterruptible(1); 997 } while (time_before(jiffies, end_time)); 998 /* This is ok, the most of motherboards have only one codec */ 999 1000 __ac97_ok2: 1001 1002 /* route FM trap to IRQ, disable FM trap */ 1003 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1004 /* disable all GPI interrupts */ 1005 outl(0, VIAREG(chip, GPI_INTR)); 1006 1007 return 0; 1008 } 1009 1010 #ifdef CONFIG_PM_SLEEP 1011 /* 1012 * power management 1013 */ 1014 static int snd_via82xx_suspend(struct device *dev) 1015 { 1016 struct snd_card *card = dev_get_drvdata(dev); 1017 struct via82xx_modem *chip = card->private_data; 1018 int i; 1019 1020 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 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 return 0; 1026 } 1027 1028 static int snd_via82xx_resume(struct device *dev) 1029 { 1030 struct snd_card *card = dev_get_drvdata(dev); 1031 struct via82xx_modem *chip = card->private_data; 1032 int i; 1033 1034 snd_via82xx_chip_init(chip); 1035 1036 snd_ac97_resume(chip->ac97); 1037 1038 for (i = 0; i < chip->num_devs; i++) 1039 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1040 1041 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1042 return 0; 1043 } 1044 1045 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); 1046 #define SND_VIA82XX_PM_OPS &snd_via82xx_pm 1047 #else 1048 #define SND_VIA82XX_PM_OPS NULL 1049 #endif /* CONFIG_PM_SLEEP */ 1050 1051 static int snd_via82xx_free(struct via82xx_modem *chip) 1052 { 1053 unsigned int i; 1054 1055 if (chip->irq < 0) 1056 goto __end_hw; 1057 /* disable interrupts */ 1058 for (i = 0; i < chip->num_devs; i++) 1059 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1060 1061 __end_hw: 1062 if (chip->irq >= 0) 1063 free_irq(chip->irq, chip); 1064 pci_release_regions(chip->pci); 1065 pci_disable_device(chip->pci); 1066 kfree(chip); 1067 return 0; 1068 } 1069 1070 static int snd_via82xx_dev_free(struct snd_device *device) 1071 { 1072 struct via82xx_modem *chip = device->device_data; 1073 return snd_via82xx_free(chip); 1074 } 1075 1076 static int snd_via82xx_create(struct snd_card *card, 1077 struct pci_dev *pci, 1078 int chip_type, 1079 int revision, 1080 unsigned int ac97_clock, 1081 struct via82xx_modem **r_via) 1082 { 1083 struct via82xx_modem *chip; 1084 int err; 1085 static struct snd_device_ops ops = { 1086 .dev_free = snd_via82xx_dev_free, 1087 }; 1088 1089 if ((err = pci_enable_device(pci)) < 0) 1090 return err; 1091 1092 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 1093 pci_disable_device(pci); 1094 return -ENOMEM; 1095 } 1096 1097 spin_lock_init(&chip->reg_lock); 1098 chip->card = card; 1099 chip->pci = pci; 1100 chip->irq = -1; 1101 1102 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1103 kfree(chip); 1104 pci_disable_device(pci); 1105 return err; 1106 } 1107 chip->port = pci_resource_start(pci, 0); 1108 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, 1109 KBUILD_MODNAME, chip)) { 1110 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1111 snd_via82xx_free(chip); 1112 return -EBUSY; 1113 } 1114 chip->irq = pci->irq; 1115 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1116 chip->ac97_clock = ac97_clock; 1117 synchronize_irq(chip->irq); 1118 1119 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1120 snd_via82xx_free(chip); 1121 return err; 1122 } 1123 1124 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1125 snd_via82xx_free(chip); 1126 return err; 1127 } 1128 1129 /* The 8233 ac97 controller does not implement the master bit 1130 * in the pci command register. IMHO this is a violation of the PCI spec. 1131 * We call pci_set_master here because it does not hurt. */ 1132 pci_set_master(pci); 1133 1134 *r_via = chip; 1135 return 0; 1136 } 1137 1138 1139 static int snd_via82xx_probe(struct pci_dev *pci, 1140 const struct pci_device_id *pci_id) 1141 { 1142 struct snd_card *card; 1143 struct via82xx_modem *chip; 1144 int chip_type = 0, card_type; 1145 unsigned int i; 1146 int err; 1147 1148 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); 1149 if (err < 0) 1150 return err; 1151 1152 card_type = pci_id->driver_data; 1153 switch (card_type) { 1154 case TYPE_CARD_VIA82XX_MODEM: 1155 strcpy(card->driver, "VIA82XX-MODEM"); 1156 sprintf(card->shortname, "VIA 82XX modem"); 1157 break; 1158 default: 1159 dev_err(card->dev, "invalid card type %d\n", card_type); 1160 err = -EINVAL; 1161 goto __error; 1162 } 1163 1164 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, 1165 ac97_clock, &chip)) < 0) 1166 goto __error; 1167 card->private_data = chip; 1168 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1169 goto __error; 1170 1171 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1172 goto __error; 1173 1174 /* disable interrupts */ 1175 for (i = 0; i < chip->num_devs; i++) 1176 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1177 1178 sprintf(card->longname, "%s at 0x%lx, irq %d", 1179 card->shortname, chip->port, chip->irq); 1180 1181 snd_via82xx_proc_init(chip); 1182 1183 if ((err = snd_card_register(card)) < 0) { 1184 snd_card_free(card); 1185 return err; 1186 } 1187 pci_set_drvdata(pci, card); 1188 return 0; 1189 1190 __error: 1191 snd_card_free(card); 1192 return err; 1193 } 1194 1195 static void snd_via82xx_remove(struct pci_dev *pci) 1196 { 1197 snd_card_free(pci_get_drvdata(pci)); 1198 } 1199 1200 static struct pci_driver via82xx_modem_driver = { 1201 .name = KBUILD_MODNAME, 1202 .id_table = snd_via82xx_modem_ids, 1203 .probe = snd_via82xx_probe, 1204 .remove = snd_via82xx_remove, 1205 .driver = { 1206 .pm = SND_VIA82XX_PM_OPS, 1207 }, 1208 }; 1209 1210 module_pci_driver(via82xx_modem_driver); 1211