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@perex.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 <linux/io.h> 35 #include <linux/delay.h> 36 #include <linux/interrupt.h> 37 #include <linux/init.h> 38 #include <linux/pci.h> 39 #include <linux/slab.h> 40 #include <linux/module.h> 41 #include <sound/core.h> 42 #include <sound/pcm.h> 43 #include <sound/pcm_params.h> 44 #include <sound/info.h> 45 #include <sound/ac97_codec.h> 46 #include <sound/initval.h> 47 48 #if 0 49 #define POINTER_DEBUG 50 #endif 51 52 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 53 MODULE_DESCRIPTION("VIA VT82xx modem"); 54 MODULE_LICENSE("GPL"); 55 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); 56 57 static int index = -2; /* Exclude the first card */ 58 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 59 static int ac97_clock = 48000; 60 61 module_param(index, int, 0444); 62 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); 63 module_param(id, charp, 0444); 64 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); 65 module_param(ac97_clock, int, 0444); 66 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 67 68 /* just for backward compatibility */ 69 static bool enable; 70 module_param(enable, bool, 0444); 71 72 73 /* 74 * Direct registers 75 */ 76 77 #define VIAREG(via, x) ((via)->port + VIA_REG_##x) 78 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) 79 80 /* common offsets */ 81 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ 82 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */ 83 #define VIA_REG_STAT_PAUSED 0x40 /* RO */ 84 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ 85 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */ 86 #define VIA_REG_STAT_EOL 0x02 /* RWC */ 87 #define VIA_REG_STAT_FLAG 0x01 /* RWC */ 88 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ 89 #define VIA_REG_CTRL_START 0x80 /* WO */ 90 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ 91 #define VIA_REG_CTRL_AUTOSTART 0x20 92 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */ 93 #define VIA_REG_CTRL_INT_STOP 0x04 94 #define VIA_REG_CTRL_INT_EOL 0x02 95 #define VIA_REG_CTRL_INT_FLAG 0x01 96 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ 97 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) 98 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ 99 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ 100 #define VIA_REG_TYPE_16BIT 0x20 /* RW */ 101 #define VIA_REG_TYPE_STEREO 0x10 /* RW */ 102 #define VIA_REG_TYPE_INT_LLINE 0x00 103 #define VIA_REG_TYPE_INT_LSAMPLE 0x04 104 #define VIA_REG_TYPE_INT_LESSONE 0x08 105 #define VIA_REG_TYPE_INT_MASK 0x0c 106 #define VIA_REG_TYPE_INT_EOL 0x02 107 #define VIA_REG_TYPE_INT_FLAG 0x01 108 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ 109 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ 110 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ 111 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ 112 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ 113 114 #define DEFINE_VIA_REGSET(name,val) \ 115 enum {\ 116 VIA_REG_##name##_STATUS = (val),\ 117 VIA_REG_##name##_CONTROL = (val) + 0x01,\ 118 VIA_REG_##name##_TYPE = (val) + 0x02,\ 119 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ 120 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ 121 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ 122 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ 123 } 124 125 /* modem block */ 126 DEFINE_VIA_REGSET(MO, 0x40); 127 DEFINE_VIA_REGSET(MI, 0x50); 128 129 /* AC'97 */ 130 #define VIA_REG_AC97 0x80 /* dword */ 131 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30) 132 #define VIA_REG_AC97_CODEC_ID_SHIFT 30 133 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 134 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 135 #define VIA_REG_AC97_SECONDARY_VALID (1<<27) 136 #define VIA_REG_AC97_PRIMARY_VALID (1<<25) 137 #define VIA_REG_AC97_BUSY (1<<24) 138 #define VIA_REG_AC97_READ (1<<23) 139 #define VIA_REG_AC97_CMD_SHIFT 16 140 #define VIA_REG_AC97_CMD_MASK 0x7e 141 #define VIA_REG_AC97_DATA_SHIFT 0 142 #define VIA_REG_AC97_DATA_MASK 0xffff 143 144 #define VIA_REG_SGD_SHADOW 0x84 /* dword */ 145 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0) 146 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1) 147 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2) 148 #define VIA_REG_SGD_STAT_PB_EOL (1<<4) 149 #define VIA_REG_SGD_STAT_CP_EOL (1<<5) 150 #define VIA_REG_SGD_STAT_FM_EOL (1<<6) 151 #define VIA_REG_SGD_STAT_PB_STOP (1<<8) 152 #define VIA_REG_SGD_STAT_CP_STOP (1<<9) 153 #define VIA_REG_SGD_STAT_FM_STOP (1<<10) 154 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) 155 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) 156 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) 157 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16) 158 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17) 159 #define VIA_REG_SGD_STAT_MR_EOL (1<<20) 160 #define VIA_REG_SGD_STAT_MW_EOL (1<<21) 161 #define VIA_REG_SGD_STAT_MR_STOP (1<<24) 162 #define VIA_REG_SGD_STAT_MW_STOP (1<<25) 163 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) 164 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) 165 166 #define VIA_REG_GPI_STATUS 0x88 167 #define VIA_REG_GPI_INTR 0x8c 168 169 #define VIA_TBL_BIT_FLAG 0x40000000 170 #define VIA_TBL_BIT_EOL 0x80000000 171 172 /* pci space */ 173 #define VIA_ACLINK_STAT 0x40 174 #define VIA_ACLINK_C11_READY 0x20 175 #define VIA_ACLINK_C10_READY 0x10 176 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ 177 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ 178 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ 179 #define VIA_ACLINK_CTRL 0x41 180 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ 181 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ 182 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ 183 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ 184 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ 185 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ 186 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ 187 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ 188 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ 189 VIA_ACLINK_CTRL_RESET|\ 190 VIA_ACLINK_CTRL_PCM) 191 #define VIA_FUNC_ENABLE 0x42 192 #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ 193 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ 194 #define VIA_FUNC_RX2C_WRITE 0x20 195 #define VIA_FUNC_SB_FIFO_EMPTY 0x10 196 #define VIA_FUNC_ENABLE_GAME 0x08 197 #define VIA_FUNC_ENABLE_FM 0x04 198 #define VIA_FUNC_ENABLE_MIDI 0x02 199 #define VIA_FUNC_ENABLE_SB 0x01 200 #define VIA_PNP_CONTROL 0x43 201 #define VIA_MC97_CTRL 0x44 202 #define VIA_MC97_CTRL_ENABLE 0x80 203 #define VIA_MC97_CTRL_SECONDARY 0x40 204 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ 205 VIA_MC97_CTRL_SECONDARY) 206 207 208 /* 209 * pcm stream 210 */ 211 212 struct snd_via_sg_table { 213 unsigned int offset; 214 unsigned int size; 215 } ; 216 217 #define VIA_TABLE_SIZE 255 218 219 struct viadev { 220 unsigned int reg_offset; 221 unsigned long port; 222 int direction; /* playback = 0, capture = 1 */ 223 struct snd_pcm_substream *substream; 224 int running; 225 unsigned int tbl_entries; /* # descriptors */ 226 struct snd_dma_buffer table; 227 struct snd_via_sg_table *idx_table; 228 /* for recovery from the unexpected pointer */ 229 unsigned int lastpos; 230 unsigned int bufsize; 231 unsigned int bufsize2; 232 }; 233 234 enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 235 236 #define VIA_MAX_MODEM_DEVS 2 237 238 struct via82xx_modem { 239 int irq; 240 241 unsigned long port; 242 243 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 244 245 struct pci_dev *pci; 246 struct snd_card *card; 247 248 unsigned int num_devs; 249 unsigned int playback_devno, capture_devno; 250 struct viadev devs[VIA_MAX_MODEM_DEVS]; 251 252 struct snd_pcm *pcms[2]; 253 254 struct snd_ac97_bus *ac97_bus; 255 struct snd_ac97 *ac97; 256 unsigned int ac97_clock; 257 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 258 259 spinlock_t reg_lock; 260 struct snd_info_entry *proc_entry; 261 }; 262 263 static const struct pci_device_id snd_via82xx_modem_ids[] = { 264 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, 265 { 0, } 266 }; 267 268 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 269 270 /* 271 */ 272 273 /* 274 * allocate and initialize the descriptor buffers 275 * periods = number of periods 276 * fragsize = period size in bytes 277 */ 278 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 279 struct pci_dev *pci, 280 unsigned int periods, unsigned int fragsize) 281 { 282 unsigned int i, idx, ofs, rest; 283 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 284 285 if (dev->table.area == NULL) { 286 /* the start of each lists must be aligned to 8 bytes, 287 * but the kernel pages are much bigger, so we don't care 288 */ 289 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 290 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 291 &dev->table) < 0) 292 return -ENOMEM; 293 } 294 if (! dev->idx_table) { 295 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE, 296 sizeof(*dev->idx_table), 297 GFP_KERNEL); 298 if (! dev->idx_table) 299 return -ENOMEM; 300 } 301 302 /* fill the entries */ 303 idx = 0; 304 ofs = 0; 305 for (i = 0; i < periods; i++) { 306 rest = fragsize; 307 /* fill descriptors for a period. 308 * a period can be split to several descriptors if it's 309 * over page boundary. 310 */ 311 do { 312 unsigned int r; 313 unsigned int flag; 314 unsigned int addr; 315 316 if (idx >= VIA_TABLE_SIZE) { 317 dev_err(&pci->dev, "too much table size!\n"); 318 return -EINVAL; 319 } 320 addr = snd_pcm_sgbuf_get_addr(substream, ofs); 321 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); 322 r = PAGE_SIZE - (ofs % PAGE_SIZE); 323 if (rest < r) 324 r = rest; 325 rest -= r; 326 if (! rest) { 327 if (i == periods - 1) 328 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 329 else 330 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 331 } else 332 flag = 0; /* period continues to the next */ 333 /* 334 dev_dbg(&pci->dev, 335 "tbl %d: at %d size %d (rest %d)\n", 336 idx, ofs, r, rest); 337 */ 338 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 339 dev->idx_table[idx].offset = ofs; 340 dev->idx_table[idx].size = r; 341 ofs += r; 342 idx++; 343 } while (rest > 0); 344 } 345 dev->tbl_entries = idx; 346 dev->bufsize = periods * fragsize; 347 dev->bufsize2 = dev->bufsize / 2; 348 return 0; 349 } 350 351 352 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 353 struct pci_dev *pci) 354 { 355 if (dev->table.area) { 356 snd_dma_free_pages(&dev->table); 357 dev->table.area = NULL; 358 } 359 kfree(dev->idx_table); 360 dev->idx_table = NULL; 361 return 0; 362 } 363 364 /* 365 * Basic I/O 366 */ 367 368 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) 369 { 370 return inl(VIAREG(chip, AC97)); 371 } 372 373 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) 374 { 375 outl(val, VIAREG(chip, AC97)); 376 } 377 378 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) 379 { 380 unsigned int timeout = 1000; /* 1ms */ 381 unsigned int val; 382 383 while (timeout-- > 0) { 384 udelay(1); 385 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 386 return val & 0xffff; 387 } 388 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", 389 secondary, snd_via82xx_codec_xread(chip)); 390 return -EIO; 391 } 392 393 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) 394 { 395 unsigned int timeout = 1000; /* 1ms */ 396 unsigned int val, val1; 397 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 398 VIA_REG_AC97_SECONDARY_VALID; 399 400 while (timeout-- > 0) { 401 val = snd_via82xx_codec_xread(chip); 402 val1 = val & (VIA_REG_AC97_BUSY | stat); 403 if (val1 == stat) 404 return val & 0xffff; 405 udelay(1); 406 } 407 return -EIO; 408 } 409 410 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) 411 { 412 struct via82xx_modem *chip = ac97->private_data; 413 int err; 414 err = snd_via82xx_codec_ready(chip, ac97->num); 415 /* here we need to wait fairly for long time.. */ 416 msleep(500); 417 } 418 419 static void snd_via82xx_codec_write(struct snd_ac97 *ac97, 420 unsigned short reg, 421 unsigned short val) 422 { 423 struct via82xx_modem *chip = ac97->private_data; 424 unsigned int xval; 425 if(reg == AC97_GPIO_STATUS) { 426 outl(val, VIAREG(chip, GPI_STATUS)); 427 return; 428 } 429 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 430 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 431 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 432 xval |= val << VIA_REG_AC97_DATA_SHIFT; 433 snd_via82xx_codec_xwrite(chip, xval); 434 snd_via82xx_codec_ready(chip, ac97->num); 435 } 436 437 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) 438 { 439 struct via82xx_modem *chip = ac97->private_data; 440 unsigned int xval, val = 0xffff; 441 int again = 0; 442 443 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 444 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 445 xval |= VIA_REG_AC97_READ; 446 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 447 while (1) { 448 if (again++ > 3) { 449 dev_err(chip->card->dev, 450 "codec_read: codec %i is not valid [0x%x]\n", 451 ac97->num, snd_via82xx_codec_xread(chip)); 452 return 0xffff; 453 } 454 snd_via82xx_codec_xwrite(chip, xval); 455 udelay (20); 456 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 457 udelay(25); 458 val = snd_via82xx_codec_xread(chip); 459 break; 460 } 461 } 462 return val & 0xffff; 463 } 464 465 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) 466 { 467 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 468 VIADEV_REG(viadev, OFFSET_CONTROL)); 469 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 470 udelay(50); 471 /* disable interrupts */ 472 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 473 /* clear interrupts */ 474 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 475 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 476 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 477 viadev->lastpos = 0; 478 } 479 480 481 /* 482 * Interrupt handler 483 */ 484 485 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) 486 { 487 struct via82xx_modem *chip = dev_id; 488 unsigned int status; 489 unsigned int i; 490 491 status = inl(VIAREG(chip, SGD_SHADOW)); 492 if (! (status & chip->intr_mask)) { 493 return IRQ_NONE; 494 } 495 // _skip_sgd: 496 497 /* check status for each stream */ 498 spin_lock(&chip->reg_lock); 499 for (i = 0; i < chip->num_devs; i++) { 500 struct viadev *viadev = &chip->devs[i]; 501 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 502 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 503 if (! c_status) 504 continue; 505 if (viadev->substream && viadev->running) { 506 spin_unlock(&chip->reg_lock); 507 snd_pcm_period_elapsed(viadev->substream); 508 spin_lock(&chip->reg_lock); 509 } 510 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 511 } 512 spin_unlock(&chip->reg_lock); 513 return IRQ_HANDLED; 514 } 515 516 /* 517 * PCM callbacks 518 */ 519 520 /* 521 * trigger callback 522 */ 523 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 524 { 525 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 526 struct viadev *viadev = substream->runtime->private_data; 527 unsigned char val = 0; 528 529 switch (cmd) { 530 case SNDRV_PCM_TRIGGER_START: 531 case SNDRV_PCM_TRIGGER_SUSPEND: 532 val |= VIA_REG_CTRL_START; 533 viadev->running = 1; 534 break; 535 case SNDRV_PCM_TRIGGER_STOP: 536 val = VIA_REG_CTRL_TERMINATE; 537 viadev->running = 0; 538 break; 539 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 540 val |= VIA_REG_CTRL_PAUSE; 541 viadev->running = 0; 542 break; 543 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 544 viadev->running = 1; 545 break; 546 default: 547 return -EINVAL; 548 } 549 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 550 if (cmd == SNDRV_PCM_TRIGGER_STOP) 551 snd_via82xx_channel_reset(chip, viadev); 552 return 0; 553 } 554 555 /* 556 * pointer callbacks 557 */ 558 559 /* 560 * calculate the linear position at the given sg-buffer index and the rest count 561 */ 562 563 #define check_invalid_pos(viadev,pos) \ 564 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ 565 viadev->lastpos < viadev->bufsize2)) 566 567 static inline unsigned int calc_linear_pos(struct via82xx_modem *chip, 568 struct viadev *viadev, 569 unsigned int idx, 570 unsigned int count) 571 { 572 unsigned int size, res; 573 574 size = viadev->idx_table[idx].size; 575 res = viadev->idx_table[idx].offset + size - count; 576 577 /* check the validity of the calculated position */ 578 if (size < count) { 579 dev_err(chip->card->dev, 580 "invalid via82xx_cur_ptr (size = %d, count = %d)\n", 581 (int)size, (int)count); 582 res = viadev->lastpos; 583 } else if (check_invalid_pos(viadev, res)) { 584 #ifdef POINTER_DEBUG 585 dev_dbg(chip->card->dev, 586 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", 587 idx, viadev->tbl_entries, viadev->lastpos, 588 viadev->bufsize2, viadev->idx_table[idx].offset, 589 viadev->idx_table[idx].size, count); 590 #endif 591 if (count && size < count) { 592 dev_dbg(chip->card->dev, 593 "invalid via82xx_cur_ptr, using last valid pointer\n"); 594 res = viadev->lastpos; 595 } else { 596 if (! count) 597 /* bogus count 0 on the DMA boundary? */ 598 res = viadev->idx_table[idx].offset; 599 else 600 /* count register returns full size 601 * when end of buffer is reached 602 */ 603 res = viadev->idx_table[idx].offset + size; 604 if (check_invalid_pos(viadev, res)) { 605 dev_dbg(chip->card->dev, 606 "invalid via82xx_cur_ptr (2), using last valid pointer\n"); 607 res = viadev->lastpos; 608 } 609 } 610 } 611 viadev->lastpos = res; /* remember the last position */ 612 if (res >= viadev->bufsize) 613 res -= viadev->bufsize; 614 return res; 615 } 616 617 /* 618 * get the current pointer on via686 619 */ 620 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) 621 { 622 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 623 struct viadev *viadev = substream->runtime->private_data; 624 unsigned int idx, ptr, count, res; 625 626 if (snd_BUG_ON(!viadev->tbl_entries)) 627 return 0; 628 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 629 return 0; 630 631 spin_lock(&chip->reg_lock); 632 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 633 /* The via686a does not have the current index register, 634 * so we need to calculate the index from CURR_PTR. 635 */ 636 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 637 if (ptr <= (unsigned int)viadev->table.addr) 638 idx = 0; 639 else /* CURR_PTR holds the address + 8 */ 640 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % 641 viadev->tbl_entries; 642 res = calc_linear_pos(chip, viadev, idx, count); 643 spin_unlock(&chip->reg_lock); 644 645 return bytes_to_frames(substream->runtime, res); 646 } 647 648 /* 649 * hw_params callback: 650 * allocate the buffer and build up the buffer description table 651 */ 652 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, 653 struct snd_pcm_hw_params *hw_params) 654 { 655 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 656 struct viadev *viadev = substream->runtime->private_data; 657 int err; 658 659 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 660 if (err < 0) 661 return err; 662 err = build_via_table(viadev, substream, chip->pci, 663 params_periods(hw_params), 664 params_period_bytes(hw_params)); 665 if (err < 0) 666 return err; 667 668 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 669 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 670 671 return 0; 672 } 673 674 /* 675 * hw_free callback: 676 * clean up the buffer description table and release the buffer 677 */ 678 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) 679 { 680 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 681 struct viadev *viadev = substream->runtime->private_data; 682 683 clean_via_table(viadev, substream, chip->pci); 684 snd_pcm_lib_free_pages(substream); 685 return 0; 686 } 687 688 689 /* 690 * set up the table pointer 691 */ 692 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) 693 { 694 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 695 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 696 udelay(20); 697 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 698 } 699 700 /* 701 * prepare callback for playback and capture 702 */ 703 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) 704 { 705 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 706 struct viadev *viadev = substream->runtime->private_data; 707 708 snd_via82xx_channel_reset(chip, viadev); 709 /* this must be set after channel_reset */ 710 snd_via82xx_set_table_ptr(chip, viadev); 711 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 712 VIADEV_REG(viadev, OFFSET_TYPE)); 713 return 0; 714 } 715 716 /* 717 * pcm hardware definition, identical for both playback and capture 718 */ 719 static const struct snd_pcm_hardware snd_via82xx_hw = 720 { 721 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 722 SNDRV_PCM_INFO_BLOCK_TRANSFER | 723 SNDRV_PCM_INFO_MMAP_VALID | 724 /* SNDRV_PCM_INFO_RESUME | */ 725 SNDRV_PCM_INFO_PAUSE), 726 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 727 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 728 .rate_min = 8000, 729 .rate_max = 16000, 730 .channels_min = 1, 731 .channels_max = 1, 732 .buffer_bytes_max = 128 * 1024, 733 .period_bytes_min = 32, 734 .period_bytes_max = 128 * 1024, 735 .periods_min = 2, 736 .periods_max = VIA_TABLE_SIZE / 2, 737 .fifo_size = 0, 738 }; 739 740 741 /* 742 * open callback skeleton 743 */ 744 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, 745 struct snd_pcm_substream *substream) 746 { 747 struct snd_pcm_runtime *runtime = substream->runtime; 748 int err; 749 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 750 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { 751 .count = ARRAY_SIZE(rates), 752 .list = rates, 753 .mask = 0, 754 }; 755 756 runtime->hw = snd_via82xx_hw; 757 758 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 759 &hw_constraints_rates)) < 0) 760 return err; 761 762 /* we may remove following constaint when we modify table entries 763 in interrupt */ 764 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 765 return err; 766 767 runtime->private_data = viadev; 768 viadev->substream = substream; 769 770 return 0; 771 } 772 773 774 /* 775 * open callback for playback 776 */ 777 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) 778 { 779 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 780 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; 781 782 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 783 } 784 785 /* 786 * open callback for capture 787 */ 788 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) 789 { 790 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 791 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 792 793 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 794 } 795 796 /* 797 * close callback 798 */ 799 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) 800 { 801 struct viadev *viadev = substream->runtime->private_data; 802 803 viadev->substream = NULL; 804 return 0; 805 } 806 807 808 /* via686 playback callbacks */ 809 static const struct snd_pcm_ops snd_via686_playback_ops = { 810 .open = snd_via82xx_playback_open, 811 .close = snd_via82xx_pcm_close, 812 .ioctl = snd_pcm_lib_ioctl, 813 .hw_params = snd_via82xx_hw_params, 814 .hw_free = snd_via82xx_hw_free, 815 .prepare = snd_via82xx_pcm_prepare, 816 .trigger = snd_via82xx_pcm_trigger, 817 .pointer = snd_via686_pcm_pointer, 818 .page = snd_pcm_sgbuf_ops_page, 819 }; 820 821 /* via686 capture callbacks */ 822 static const struct snd_pcm_ops snd_via686_capture_ops = { 823 .open = snd_via82xx_capture_open, 824 .close = snd_via82xx_pcm_close, 825 .ioctl = snd_pcm_lib_ioctl, 826 .hw_params = snd_via82xx_hw_params, 827 .hw_free = snd_via82xx_hw_free, 828 .prepare = snd_via82xx_pcm_prepare, 829 .trigger = snd_via82xx_pcm_trigger, 830 .pointer = snd_via686_pcm_pointer, 831 .page = snd_pcm_sgbuf_ops_page, 832 }; 833 834 835 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, 836 int direction) 837 { 838 chip->devs[idx].reg_offset = reg_offset; 839 chip->devs[idx].direction = direction; 840 chip->devs[idx].port = chip->port + reg_offset; 841 } 842 843 /* 844 * create a pcm instance for via686a/b 845 */ 846 static int snd_via686_pcm_new(struct via82xx_modem *chip) 847 { 848 struct snd_pcm *pcm; 849 int err; 850 851 chip->playback_devno = 0; 852 chip->capture_devno = 1; 853 chip->num_devs = 2; 854 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 855 856 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 857 if (err < 0) 858 return err; 859 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 860 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 861 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 862 pcm->private_data = chip; 863 strcpy(pcm->name, chip->card->shortname); 864 chip->pcms[0] = pcm; 865 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 866 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 867 868 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 869 snd_dma_pci_data(chip->pci), 870 64*1024, 128*1024); 871 return 0; 872 } 873 874 875 /* 876 * Mixer part 877 */ 878 879 880 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) 881 { 882 struct via82xx_modem *chip = bus->private_data; 883 chip->ac97_bus = NULL; 884 } 885 886 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) 887 { 888 struct via82xx_modem *chip = ac97->private_data; 889 chip->ac97 = NULL; 890 } 891 892 893 static int snd_via82xx_mixer_new(struct via82xx_modem *chip) 894 { 895 struct snd_ac97_template ac97; 896 int err; 897 static struct snd_ac97_bus_ops ops = { 898 .write = snd_via82xx_codec_write, 899 .read = snd_via82xx_codec_read, 900 .wait = snd_via82xx_codec_wait, 901 }; 902 903 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 904 return err; 905 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 906 chip->ac97_bus->clock = chip->ac97_clock; 907 908 memset(&ac97, 0, sizeof(ac97)); 909 ac97.private_data = chip; 910 ac97.private_free = snd_via82xx_mixer_free_ac97; 911 ac97.pci = chip->pci; 912 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 913 ac97.num = chip->ac97_secondary; 914 915 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 916 return err; 917 918 return 0; 919 } 920 921 922 /* 923 * proc interface 924 */ 925 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 926 { 927 struct via82xx_modem *chip = entry->private_data; 928 int i; 929 930 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 931 for (i = 0; i < 0xa0; i += 4) { 932 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 933 } 934 } 935 936 static void snd_via82xx_proc_init(struct via82xx_modem *chip) 937 { 938 struct snd_info_entry *entry; 939 940 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 941 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); 942 } 943 944 /* 945 * 946 */ 947 948 static int snd_via82xx_chip_init(struct via82xx_modem *chip) 949 { 950 unsigned int val; 951 unsigned long end_time; 952 unsigned char pval; 953 954 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 955 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 956 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 957 udelay(100); 958 } 959 960 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 961 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 962 /* deassert ACLink reset, force SYNC */ 963 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 964 VIA_ACLINK_CTRL_ENABLE | 965 VIA_ACLINK_CTRL_RESET | 966 VIA_ACLINK_CTRL_SYNC); 967 udelay(100); 968 #if 1 /* FIXME: should we do full reset here for all chip models? */ 969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 970 udelay(100); 971 #else 972 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 973 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 974 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 975 udelay(2); 976 #endif 977 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 978 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 979 udelay(100); 980 } 981 982 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 983 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 984 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 985 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 986 udelay(100); 987 } 988 989 /* wait until codec ready */ 990 end_time = jiffies + msecs_to_jiffies(750); 991 do { 992 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 993 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 994 break; 995 schedule_timeout_uninterruptible(1); 996 } while (time_before(jiffies, end_time)); 997 998 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 999 dev_err(chip->card->dev, 1000 "AC'97 codec is not ready [0x%x]\n", val); 1001 1002 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 1003 VIA_REG_AC97_SECONDARY_VALID | 1004 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 1005 end_time = jiffies + msecs_to_jiffies(750); 1006 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 1007 VIA_REG_AC97_SECONDARY_VALID | 1008 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 1009 do { 1010 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 1011 chip->ac97_secondary = 1; 1012 goto __ac97_ok2; 1013 } 1014 schedule_timeout_uninterruptible(1); 1015 } while (time_before(jiffies, end_time)); 1016 /* This is ok, the most of motherboards have only one codec */ 1017 1018 __ac97_ok2: 1019 1020 /* route FM trap to IRQ, disable FM trap */ 1021 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1022 /* disable all GPI interrupts */ 1023 outl(0, VIAREG(chip, GPI_INTR)); 1024 1025 return 0; 1026 } 1027 1028 #ifdef CONFIG_PM_SLEEP 1029 /* 1030 * power management 1031 */ 1032 static int snd_via82xx_suspend(struct device *dev) 1033 { 1034 struct snd_card *card = dev_get_drvdata(dev); 1035 struct via82xx_modem *chip = card->private_data; 1036 int i; 1037 1038 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1039 for (i = 0; i < chip->num_devs; i++) 1040 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1041 synchronize_irq(chip->irq); 1042 snd_ac97_suspend(chip->ac97); 1043 return 0; 1044 } 1045 1046 static int snd_via82xx_resume(struct device *dev) 1047 { 1048 struct snd_card *card = dev_get_drvdata(dev); 1049 struct via82xx_modem *chip = card->private_data; 1050 int i; 1051 1052 snd_via82xx_chip_init(chip); 1053 1054 snd_ac97_resume(chip->ac97); 1055 1056 for (i = 0; i < chip->num_devs; i++) 1057 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1058 1059 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1060 return 0; 1061 } 1062 1063 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); 1064 #define SND_VIA82XX_PM_OPS &snd_via82xx_pm 1065 #else 1066 #define SND_VIA82XX_PM_OPS NULL 1067 #endif /* CONFIG_PM_SLEEP */ 1068 1069 static int snd_via82xx_free(struct via82xx_modem *chip) 1070 { 1071 unsigned int i; 1072 1073 if (chip->irq < 0) 1074 goto __end_hw; 1075 /* disable interrupts */ 1076 for (i = 0; i < chip->num_devs; i++) 1077 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1078 1079 __end_hw: 1080 if (chip->irq >= 0) 1081 free_irq(chip->irq, chip); 1082 pci_release_regions(chip->pci); 1083 pci_disable_device(chip->pci); 1084 kfree(chip); 1085 return 0; 1086 } 1087 1088 static int snd_via82xx_dev_free(struct snd_device *device) 1089 { 1090 struct via82xx_modem *chip = device->device_data; 1091 return snd_via82xx_free(chip); 1092 } 1093 1094 static int snd_via82xx_create(struct snd_card *card, 1095 struct pci_dev *pci, 1096 int chip_type, 1097 int revision, 1098 unsigned int ac97_clock, 1099 struct via82xx_modem **r_via) 1100 { 1101 struct via82xx_modem *chip; 1102 int err; 1103 static struct snd_device_ops ops = { 1104 .dev_free = snd_via82xx_dev_free, 1105 }; 1106 1107 if ((err = pci_enable_device(pci)) < 0) 1108 return err; 1109 1110 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 1111 pci_disable_device(pci); 1112 return -ENOMEM; 1113 } 1114 1115 spin_lock_init(&chip->reg_lock); 1116 chip->card = card; 1117 chip->pci = pci; 1118 chip->irq = -1; 1119 1120 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1121 kfree(chip); 1122 pci_disable_device(pci); 1123 return err; 1124 } 1125 chip->port = pci_resource_start(pci, 0); 1126 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, 1127 KBUILD_MODNAME, chip)) { 1128 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1129 snd_via82xx_free(chip); 1130 return -EBUSY; 1131 } 1132 chip->irq = pci->irq; 1133 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1134 chip->ac97_clock = ac97_clock; 1135 synchronize_irq(chip->irq); 1136 1137 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1138 snd_via82xx_free(chip); 1139 return err; 1140 } 1141 1142 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1143 snd_via82xx_free(chip); 1144 return err; 1145 } 1146 1147 /* The 8233 ac97 controller does not implement the master bit 1148 * in the pci command register. IMHO this is a violation of the PCI spec. 1149 * We call pci_set_master here because it does not hurt. */ 1150 pci_set_master(pci); 1151 1152 *r_via = chip; 1153 return 0; 1154 } 1155 1156 1157 static int snd_via82xx_probe(struct pci_dev *pci, 1158 const struct pci_device_id *pci_id) 1159 { 1160 struct snd_card *card; 1161 struct via82xx_modem *chip; 1162 int chip_type = 0, card_type; 1163 unsigned int i; 1164 int err; 1165 1166 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); 1167 if (err < 0) 1168 return err; 1169 1170 card_type = pci_id->driver_data; 1171 switch (card_type) { 1172 case TYPE_CARD_VIA82XX_MODEM: 1173 strcpy(card->driver, "VIA82XX-MODEM"); 1174 sprintf(card->shortname, "VIA 82XX modem"); 1175 break; 1176 default: 1177 dev_err(card->dev, "invalid card type %d\n", card_type); 1178 err = -EINVAL; 1179 goto __error; 1180 } 1181 1182 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, 1183 ac97_clock, &chip)) < 0) 1184 goto __error; 1185 card->private_data = chip; 1186 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1187 goto __error; 1188 1189 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1190 goto __error; 1191 1192 /* disable interrupts */ 1193 for (i = 0; i < chip->num_devs; i++) 1194 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1195 1196 sprintf(card->longname, "%s at 0x%lx, irq %d", 1197 card->shortname, chip->port, chip->irq); 1198 1199 snd_via82xx_proc_init(chip); 1200 1201 if ((err = snd_card_register(card)) < 0) { 1202 snd_card_free(card); 1203 return err; 1204 } 1205 pci_set_drvdata(pci, card); 1206 return 0; 1207 1208 __error: 1209 snd_card_free(card); 1210 return err; 1211 } 1212 1213 static void snd_via82xx_remove(struct pci_dev *pci) 1214 { 1215 snd_card_free(pci_get_drvdata(pci)); 1216 } 1217 1218 static struct pci_driver via82xx_modem_driver = { 1219 .name = KBUILD_MODNAME, 1220 .id_table = snd_via82xx_modem_ids, 1221 .probe = snd_via82xx_probe, 1222 .remove = snd_via82xx_remove, 1223 .driver = { 1224 .pm = SND_VIA82XX_PM_OPS, 1225 }, 1226 }; 1227 1228 module_pci_driver(via82xx_modem_driver); 1229