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 <asm/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/moduleparam.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 int 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 struct pci_device_id snd_via82xx_modem_ids[] = { 264 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 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 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); 285 286 if (dev->table.area == NULL) { 287 /* the start of each lists must be aligned to 8 bytes, 288 * but the kernel pages are much bigger, so we don't care 289 */ 290 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 291 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 292 &dev->table) < 0) 293 return -ENOMEM; 294 } 295 if (! dev->idx_table) { 296 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); 297 if (! dev->idx_table) 298 return -ENOMEM; 299 } 300 301 /* fill the entries */ 302 idx = 0; 303 ofs = 0; 304 for (i = 0; i < periods; i++) { 305 rest = fragsize; 306 /* fill descriptors for a period. 307 * a period can be split to several descriptors if it's 308 * over page boundary. 309 */ 310 do { 311 unsigned int r; 312 unsigned int flag; 313 314 if (idx >= VIA_TABLE_SIZE) { 315 snd_printk(KERN_ERR "via82xx: too much table size!\n"); 316 return -EINVAL; 317 } 318 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); 319 r = PAGE_SIZE - (ofs % PAGE_SIZE); 320 if (rest < r) 321 r = rest; 322 rest -= r; 323 if (! rest) { 324 if (i == periods - 1) 325 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 326 else 327 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 328 } else 329 flag = 0; /* period continues to the next */ 330 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); 331 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 332 dev->idx_table[idx].offset = ofs; 333 dev->idx_table[idx].size = r; 334 ofs += r; 335 idx++; 336 } while (rest > 0); 337 } 338 dev->tbl_entries = idx; 339 dev->bufsize = periods * fragsize; 340 dev->bufsize2 = dev->bufsize / 2; 341 return 0; 342 } 343 344 345 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 346 struct pci_dev *pci) 347 { 348 if (dev->table.area) { 349 snd_dma_free_pages(&dev->table); 350 dev->table.area = NULL; 351 } 352 kfree(dev->idx_table); 353 dev->idx_table = NULL; 354 return 0; 355 } 356 357 /* 358 * Basic I/O 359 */ 360 361 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) 362 { 363 return inl(VIAREG(chip, AC97)); 364 } 365 366 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) 367 { 368 outl(val, VIAREG(chip, AC97)); 369 } 370 371 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) 372 { 373 unsigned int timeout = 1000; /* 1ms */ 374 unsigned int val; 375 376 while (timeout-- > 0) { 377 udelay(1); 378 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 379 return val & 0xffff; 380 } 381 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", 382 secondary, snd_via82xx_codec_xread(chip)); 383 return -EIO; 384 } 385 386 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) 387 { 388 unsigned int timeout = 1000; /* 1ms */ 389 unsigned int val, val1; 390 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 391 VIA_REG_AC97_SECONDARY_VALID; 392 393 while (timeout-- > 0) { 394 val = snd_via82xx_codec_xread(chip); 395 val1 = val & (VIA_REG_AC97_BUSY | stat); 396 if (val1 == stat) 397 return val & 0xffff; 398 udelay(1); 399 } 400 return -EIO; 401 } 402 403 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) 404 { 405 struct via82xx_modem *chip = ac97->private_data; 406 int err; 407 err = snd_via82xx_codec_ready(chip, ac97->num); 408 /* here we need to wait fairly for long time.. */ 409 msleep(500); 410 } 411 412 static void snd_via82xx_codec_write(struct snd_ac97 *ac97, 413 unsigned short reg, 414 unsigned short val) 415 { 416 struct via82xx_modem *chip = ac97->private_data; 417 unsigned int xval; 418 if(reg == AC97_GPIO_STATUS) { 419 outl(val, VIAREG(chip, GPI_STATUS)); 420 return; 421 } 422 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 423 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 424 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 425 xval |= val << VIA_REG_AC97_DATA_SHIFT; 426 snd_via82xx_codec_xwrite(chip, xval); 427 snd_via82xx_codec_ready(chip, ac97->num); 428 } 429 430 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) 431 { 432 struct via82xx_modem *chip = ac97->private_data; 433 unsigned int xval, val = 0xffff; 434 int again = 0; 435 436 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 437 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 438 xval |= VIA_REG_AC97_READ; 439 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 440 while (1) { 441 if (again++ > 3) { 442 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 443 ac97->num, snd_via82xx_codec_xread(chip)); 444 return 0xffff; 445 } 446 snd_via82xx_codec_xwrite(chip, xval); 447 udelay (20); 448 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 449 udelay(25); 450 val = snd_via82xx_codec_xread(chip); 451 break; 452 } 453 } 454 return val & 0xffff; 455 } 456 457 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) 458 { 459 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 460 VIADEV_REG(viadev, OFFSET_CONTROL)); 461 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 462 udelay(50); 463 /* disable interrupts */ 464 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 465 /* clear interrupts */ 466 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 467 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 468 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 469 viadev->lastpos = 0; 470 } 471 472 473 /* 474 * Interrupt handler 475 */ 476 477 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) 478 { 479 struct via82xx_modem *chip = dev_id; 480 unsigned int status; 481 unsigned int i; 482 483 status = inl(VIAREG(chip, SGD_SHADOW)); 484 if (! (status & chip->intr_mask)) { 485 return IRQ_NONE; 486 } 487 // _skip_sgd: 488 489 /* check status for each stream */ 490 spin_lock(&chip->reg_lock); 491 for (i = 0; i < chip->num_devs; i++) { 492 struct viadev *viadev = &chip->devs[i]; 493 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 494 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 495 if (! c_status) 496 continue; 497 if (viadev->substream && viadev->running) { 498 spin_unlock(&chip->reg_lock); 499 snd_pcm_period_elapsed(viadev->substream); 500 spin_lock(&chip->reg_lock); 501 } 502 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 503 } 504 spin_unlock(&chip->reg_lock); 505 return IRQ_HANDLED; 506 } 507 508 /* 509 * PCM callbacks 510 */ 511 512 /* 513 * trigger callback 514 */ 515 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 516 { 517 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 518 struct viadev *viadev = substream->runtime->private_data; 519 unsigned char val = 0; 520 521 switch (cmd) { 522 case SNDRV_PCM_TRIGGER_START: 523 case SNDRV_PCM_TRIGGER_SUSPEND: 524 val |= VIA_REG_CTRL_START; 525 viadev->running = 1; 526 break; 527 case SNDRV_PCM_TRIGGER_STOP: 528 val = VIA_REG_CTRL_TERMINATE; 529 viadev->running = 0; 530 break; 531 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 532 val |= VIA_REG_CTRL_PAUSE; 533 viadev->running = 0; 534 break; 535 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 536 viadev->running = 1; 537 break; 538 default: 539 return -EINVAL; 540 } 541 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 542 if (cmd == SNDRV_PCM_TRIGGER_STOP) 543 snd_via82xx_channel_reset(chip, viadev); 544 return 0; 545 } 546 547 /* 548 * pointer callbacks 549 */ 550 551 /* 552 * calculate the linear position at the given sg-buffer index and the rest count 553 */ 554 555 #define check_invalid_pos(viadev,pos) \ 556 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ 557 viadev->lastpos < viadev->bufsize2)) 558 559 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx, 560 unsigned int count) 561 { 562 unsigned int size, res; 563 564 size = viadev->idx_table[idx].size; 565 res = viadev->idx_table[idx].offset + size - count; 566 567 /* check the validity of the calculated position */ 568 if (size < count) { 569 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", 570 (int)size, (int)count); 571 res = viadev->lastpos; 572 } else if (check_invalid_pos(viadev, res)) { 573 #ifdef POINTER_DEBUG 574 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, " 575 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, " 576 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, 577 viadev->bufsize2, viadev->idx_table[idx].offset, 578 viadev->idx_table[idx].size, count); 579 #endif 580 if (count && size < count) { 581 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " 582 "using last valid pointer\n"); 583 res = viadev->lastpos; 584 } else { 585 if (! count) 586 /* bogus count 0 on the DMA boundary? */ 587 res = viadev->idx_table[idx].offset; 588 else 589 /* count register returns full size 590 * when end of buffer is reached 591 */ 592 res = viadev->idx_table[idx].offset + size; 593 if (check_invalid_pos(viadev, res)) { 594 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), " 595 "using last valid pointer\n"); 596 res = viadev->lastpos; 597 } 598 } 599 } 600 viadev->lastpos = res; /* remember the last position */ 601 if (res >= viadev->bufsize) 602 res -= viadev->bufsize; 603 return res; 604 } 605 606 /* 607 * get the current pointer on via686 608 */ 609 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) 610 { 611 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 612 struct viadev *viadev = substream->runtime->private_data; 613 unsigned int idx, ptr, count, res; 614 615 snd_assert(viadev->tbl_entries, return 0); 616 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 617 return 0; 618 619 spin_lock(&chip->reg_lock); 620 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 621 /* The via686a does not have the current index register, 622 * so we need to calculate the index from CURR_PTR. 623 */ 624 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 625 if (ptr <= (unsigned int)viadev->table.addr) 626 idx = 0; 627 else /* CURR_PTR holds the address + 8 */ 628 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % 629 viadev->tbl_entries; 630 res = calc_linear_pos(viadev, idx, count); 631 spin_unlock(&chip->reg_lock); 632 633 return bytes_to_frames(substream->runtime, res); 634 } 635 636 /* 637 * hw_params callback: 638 * allocate the buffer and build up the buffer description table 639 */ 640 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, 641 struct snd_pcm_hw_params *hw_params) 642 { 643 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 644 struct viadev *viadev = substream->runtime->private_data; 645 int err; 646 647 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 648 if (err < 0) 649 return err; 650 err = build_via_table(viadev, substream, chip->pci, 651 params_periods(hw_params), 652 params_period_bytes(hw_params)); 653 if (err < 0) 654 return err; 655 656 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 657 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 658 659 return 0; 660 } 661 662 /* 663 * hw_free callback: 664 * clean up the buffer description table and release the buffer 665 */ 666 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) 667 { 668 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 669 struct viadev *viadev = substream->runtime->private_data; 670 671 clean_via_table(viadev, substream, chip->pci); 672 snd_pcm_lib_free_pages(substream); 673 return 0; 674 } 675 676 677 /* 678 * set up the table pointer 679 */ 680 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) 681 { 682 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 683 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 684 udelay(20); 685 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 686 } 687 688 /* 689 * prepare callback for playback and capture 690 */ 691 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) 692 { 693 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 694 struct viadev *viadev = substream->runtime->private_data; 695 696 snd_via82xx_channel_reset(chip, viadev); 697 /* this must be set after channel_reset */ 698 snd_via82xx_set_table_ptr(chip, viadev); 699 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 700 VIADEV_REG(viadev, OFFSET_TYPE)); 701 return 0; 702 } 703 704 /* 705 * pcm hardware definition, identical for both playback and capture 706 */ 707 static struct snd_pcm_hardware snd_via82xx_hw = 708 { 709 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 710 SNDRV_PCM_INFO_BLOCK_TRANSFER | 711 SNDRV_PCM_INFO_MMAP_VALID | 712 /* SNDRV_PCM_INFO_RESUME | */ 713 SNDRV_PCM_INFO_PAUSE), 714 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 715 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 716 .rate_min = 8000, 717 .rate_max = 16000, 718 .channels_min = 1, 719 .channels_max = 1, 720 .buffer_bytes_max = 128 * 1024, 721 .period_bytes_min = 32, 722 .period_bytes_max = 128 * 1024, 723 .periods_min = 2, 724 .periods_max = VIA_TABLE_SIZE / 2, 725 .fifo_size = 0, 726 }; 727 728 729 /* 730 * open callback skeleton 731 */ 732 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, 733 struct snd_pcm_substream *substream) 734 { 735 struct snd_pcm_runtime *runtime = substream->runtime; 736 int err; 737 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 738 static struct snd_pcm_hw_constraint_list hw_constraints_rates = { 739 .count = ARRAY_SIZE(rates), 740 .list = rates, 741 .mask = 0, 742 }; 743 744 runtime->hw = snd_via82xx_hw; 745 746 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 747 &hw_constraints_rates)) < 0) 748 return err; 749 750 /* we may remove following constaint when we modify table entries 751 in interrupt */ 752 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 753 return err; 754 755 runtime->private_data = viadev; 756 viadev->substream = substream; 757 758 return 0; 759 } 760 761 762 /* 763 * open callback for playback 764 */ 765 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) 766 { 767 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 768 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; 769 770 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 771 } 772 773 /* 774 * open callback for capture 775 */ 776 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) 777 { 778 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 779 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 780 781 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 782 } 783 784 /* 785 * close callback 786 */ 787 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) 788 { 789 struct viadev *viadev = substream->runtime->private_data; 790 791 viadev->substream = NULL; 792 return 0; 793 } 794 795 796 /* via686 playback callbacks */ 797 static struct snd_pcm_ops snd_via686_playback_ops = { 798 .open = snd_via82xx_playback_open, 799 .close = snd_via82xx_pcm_close, 800 .ioctl = snd_pcm_lib_ioctl, 801 .hw_params = snd_via82xx_hw_params, 802 .hw_free = snd_via82xx_hw_free, 803 .prepare = snd_via82xx_pcm_prepare, 804 .trigger = snd_via82xx_pcm_trigger, 805 .pointer = snd_via686_pcm_pointer, 806 .page = snd_pcm_sgbuf_ops_page, 807 }; 808 809 /* via686 capture callbacks */ 810 static struct snd_pcm_ops snd_via686_capture_ops = { 811 .open = snd_via82xx_capture_open, 812 .close = snd_via82xx_pcm_close, 813 .ioctl = snd_pcm_lib_ioctl, 814 .hw_params = snd_via82xx_hw_params, 815 .hw_free = snd_via82xx_hw_free, 816 .prepare = snd_via82xx_pcm_prepare, 817 .trigger = snd_via82xx_pcm_trigger, 818 .pointer = snd_via686_pcm_pointer, 819 .page = snd_pcm_sgbuf_ops_page, 820 }; 821 822 823 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, 824 int direction) 825 { 826 chip->devs[idx].reg_offset = reg_offset; 827 chip->devs[idx].direction = direction; 828 chip->devs[idx].port = chip->port + reg_offset; 829 } 830 831 /* 832 * create a pcm instance for via686a/b 833 */ 834 static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip) 835 { 836 struct snd_pcm *pcm; 837 int err; 838 839 chip->playback_devno = 0; 840 chip->capture_devno = 1; 841 chip->num_devs = 2; 842 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 843 844 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 845 if (err < 0) 846 return err; 847 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 848 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 849 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 850 pcm->private_data = chip; 851 strcpy(pcm->name, chip->card->shortname); 852 chip->pcms[0] = pcm; 853 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 854 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 855 856 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 857 snd_dma_pci_data(chip->pci), 858 64*1024, 128*1024)) < 0) 859 return err; 860 861 return 0; 862 } 863 864 865 /* 866 * Mixer part 867 */ 868 869 870 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) 871 { 872 struct via82xx_modem *chip = bus->private_data; 873 chip->ac97_bus = NULL; 874 } 875 876 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) 877 { 878 struct via82xx_modem *chip = ac97->private_data; 879 chip->ac97 = NULL; 880 } 881 882 883 static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip) 884 { 885 struct snd_ac97_template ac97; 886 int err; 887 static struct snd_ac97_bus_ops ops = { 888 .write = snd_via82xx_codec_write, 889 .read = snd_via82xx_codec_read, 890 .wait = snd_via82xx_codec_wait, 891 }; 892 893 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 894 return err; 895 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 896 chip->ac97_bus->clock = chip->ac97_clock; 897 898 memset(&ac97, 0, sizeof(ac97)); 899 ac97.private_data = chip; 900 ac97.private_free = snd_via82xx_mixer_free_ac97; 901 ac97.pci = chip->pci; 902 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 903 ac97.num = chip->ac97_secondary; 904 905 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 906 return err; 907 908 return 0; 909 } 910 911 912 /* 913 * proc interface 914 */ 915 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 916 { 917 struct via82xx_modem *chip = entry->private_data; 918 int i; 919 920 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 921 for (i = 0; i < 0xa0; i += 4) { 922 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 923 } 924 } 925 926 static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip) 927 { 928 struct snd_info_entry *entry; 929 930 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 931 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); 932 } 933 934 /* 935 * 936 */ 937 938 static int snd_via82xx_chip_init(struct via82xx_modem *chip) 939 { 940 unsigned int val; 941 unsigned long end_time; 942 unsigned char pval; 943 944 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 945 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 946 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 947 udelay(100); 948 } 949 950 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 951 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 952 /* deassert ACLink reset, force SYNC */ 953 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 954 VIA_ACLINK_CTRL_ENABLE | 955 VIA_ACLINK_CTRL_RESET | 956 VIA_ACLINK_CTRL_SYNC); 957 udelay(100); 958 #if 1 /* FIXME: should we do full reset here for all chip models? */ 959 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 960 udelay(100); 961 #else 962 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 963 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 964 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 965 udelay(2); 966 #endif 967 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 968 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 969 udelay(100); 970 } 971 972 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 973 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 974 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 975 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 976 udelay(100); 977 } 978 979 /* wait until codec ready */ 980 end_time = jiffies + msecs_to_jiffies(750); 981 do { 982 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 983 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 984 break; 985 schedule_timeout_uninterruptible(1); 986 } while (time_before(jiffies, end_time)); 987 988 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 989 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); 990 991 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 992 VIA_REG_AC97_SECONDARY_VALID | 993 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 994 end_time = jiffies + msecs_to_jiffies(750); 995 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 996 VIA_REG_AC97_SECONDARY_VALID | 997 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 998 do { 999 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 1000 chip->ac97_secondary = 1; 1001 goto __ac97_ok2; 1002 } 1003 schedule_timeout_uninterruptible(1); 1004 } while (time_before(jiffies, end_time)); 1005 /* This is ok, the most of motherboards have only one codec */ 1006 1007 __ac97_ok2: 1008 1009 /* route FM trap to IRQ, disable FM trap */ 1010 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1011 /* disable all GPI interrupts */ 1012 outl(0, VIAREG(chip, GPI_INTR)); 1013 1014 return 0; 1015 } 1016 1017 #ifdef CONFIG_PM 1018 /* 1019 * power management 1020 */ 1021 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state) 1022 { 1023 struct snd_card *card = pci_get_drvdata(pci); 1024 struct via82xx_modem *chip = card->private_data; 1025 int i; 1026 1027 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1028 for (i = 0; i < 2; i++) 1029 snd_pcm_suspend_all(chip->pcms[i]); 1030 for (i = 0; i < chip->num_devs; i++) 1031 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1032 synchronize_irq(chip->irq); 1033 snd_ac97_suspend(chip->ac97); 1034 1035 pci_disable_device(pci); 1036 pci_save_state(pci); 1037 pci_set_power_state(pci, pci_choose_state(pci, state)); 1038 return 0; 1039 } 1040 1041 static int snd_via82xx_resume(struct pci_dev *pci) 1042 { 1043 struct snd_card *card = pci_get_drvdata(pci); 1044 struct via82xx_modem *chip = card->private_data; 1045 int i; 1046 1047 pci_set_power_state(pci, PCI_D0); 1048 pci_restore_state(pci); 1049 if (pci_enable_device(pci) < 0) { 1050 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, " 1051 "disabling device\n"); 1052 snd_card_disconnect(card); 1053 return -EIO; 1054 } 1055 pci_set_master(pci); 1056 1057 snd_via82xx_chip_init(chip); 1058 1059 snd_ac97_resume(chip->ac97); 1060 1061 for (i = 0; i < chip->num_devs; i++) 1062 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1063 1064 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1065 return 0; 1066 } 1067 #endif /* CONFIG_PM */ 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 __devinit 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 card->driver, chip)) { 1128 snd_printk(KERN_ERR "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 snd_card_set_dev(card, &pci->dev); 1153 1154 *r_via = chip; 1155 return 0; 1156 } 1157 1158 1159 static int __devinit snd_via82xx_probe(struct pci_dev *pci, 1160 const struct pci_device_id *pci_id) 1161 { 1162 struct snd_card *card; 1163 struct via82xx_modem *chip; 1164 int chip_type = 0, card_type; 1165 unsigned int i; 1166 int err; 1167 1168 card = snd_card_new(index, id, THIS_MODULE, 0); 1169 if (card == NULL) 1170 return -ENOMEM; 1171 1172 card_type = pci_id->driver_data; 1173 switch (card_type) { 1174 case TYPE_CARD_VIA82XX_MODEM: 1175 strcpy(card->driver, "VIA82XX-MODEM"); 1176 sprintf(card->shortname, "VIA 82XX modem"); 1177 break; 1178 default: 1179 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1180 err = -EINVAL; 1181 goto __error; 1182 } 1183 1184 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, 1185 ac97_clock, &chip)) < 0) 1186 goto __error; 1187 card->private_data = chip; 1188 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1189 goto __error; 1190 1191 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1192 goto __error; 1193 1194 /* disable interrupts */ 1195 for (i = 0; i < chip->num_devs; i++) 1196 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1197 1198 sprintf(card->longname, "%s at 0x%lx, irq %d", 1199 card->shortname, chip->port, chip->irq); 1200 1201 snd_via82xx_proc_init(chip); 1202 1203 if ((err = snd_card_register(card)) < 0) { 1204 snd_card_free(card); 1205 return err; 1206 } 1207 pci_set_drvdata(pci, card); 1208 return 0; 1209 1210 __error: 1211 snd_card_free(card); 1212 return err; 1213 } 1214 1215 static void __devexit snd_via82xx_remove(struct pci_dev *pci) 1216 { 1217 snd_card_free(pci_get_drvdata(pci)); 1218 pci_set_drvdata(pci, NULL); 1219 } 1220 1221 static struct pci_driver driver = { 1222 .name = "VIA 82xx Modem", 1223 .id_table = snd_via82xx_modem_ids, 1224 .probe = snd_via82xx_probe, 1225 .remove = __devexit_p(snd_via82xx_remove), 1226 #ifdef CONFIG_PM 1227 .suspend = snd_via82xx_suspend, 1228 .resume = snd_via82xx_resume, 1229 #endif 1230 }; 1231 1232 static int __init alsa_card_via82xx_init(void) 1233 { 1234 return pci_register_driver(&driver); 1235 } 1236 1237 static void __exit alsa_card_via82xx_exit(void) 1238 { 1239 pci_unregister_driver(&driver); 1240 } 1241 1242 module_init(alsa_card_via82xx_init) 1243 module_exit(alsa_card_via82xx_exit) 1244