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 <sound/driver.h> 35 #include <asm/io.h> 36 #include <linux/delay.h> 37 #include <linux/interrupt.h> 38 #include <linux/init.h> 39 #include <linux/pci.h> 40 #include <linux/slab.h> 41 #include <linux/moduleparam.h> 42 #include <sound/core.h> 43 #include <sound/pcm.h> 44 #include <sound/pcm_params.h> 45 #include <sound/info.h> 46 #include <sound/ac97_codec.h> 47 #include <sound/initval.h> 48 49 #if 0 50 #define POINTER_DEBUG 51 #endif 52 53 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 54 MODULE_DESCRIPTION("VIA VT82xx modem"); 55 MODULE_LICENSE("GPL"); 56 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); 57 58 static int index = -2; /* Exclude the first card */ 59 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 60 static int ac97_clock = 48000; 61 62 module_param(index, int, 0444); 63 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); 64 module_param(id, charp, 0444); 65 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); 66 module_param(ac97_clock, int, 0444); 67 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 68 69 /* just for backward compatibility */ 70 static int enable; 71 module_param(enable, bool, 0444); 72 73 74 /* 75 * Direct registers 76 */ 77 78 #define VIAREG(via, x) ((via)->port + VIA_REG_##x) 79 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) 80 81 /* common offsets */ 82 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ 83 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */ 84 #define VIA_REG_STAT_PAUSED 0x40 /* RO */ 85 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ 86 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */ 87 #define VIA_REG_STAT_EOL 0x02 /* RWC */ 88 #define VIA_REG_STAT_FLAG 0x01 /* RWC */ 89 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ 90 #define VIA_REG_CTRL_START 0x80 /* WO */ 91 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ 92 #define VIA_REG_CTRL_AUTOSTART 0x20 93 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */ 94 #define VIA_REG_CTRL_INT_STOP 0x04 95 #define VIA_REG_CTRL_INT_EOL 0x02 96 #define VIA_REG_CTRL_INT_FLAG 0x01 97 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ 98 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) 99 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ 100 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ 101 #define VIA_REG_TYPE_16BIT 0x20 /* RW */ 102 #define VIA_REG_TYPE_STEREO 0x10 /* RW */ 103 #define VIA_REG_TYPE_INT_LLINE 0x00 104 #define VIA_REG_TYPE_INT_LSAMPLE 0x04 105 #define VIA_REG_TYPE_INT_LESSONE 0x08 106 #define VIA_REG_TYPE_INT_MASK 0x0c 107 #define VIA_REG_TYPE_INT_EOL 0x02 108 #define VIA_REG_TYPE_INT_FLAG 0x01 109 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ 110 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ 111 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ 112 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ 113 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ 114 115 #define DEFINE_VIA_REGSET(name,val) \ 116 enum {\ 117 VIA_REG_##name##_STATUS = (val),\ 118 VIA_REG_##name##_CONTROL = (val) + 0x01,\ 119 VIA_REG_##name##_TYPE = (val) + 0x02,\ 120 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ 121 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ 122 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ 123 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ 124 } 125 126 /* modem block */ 127 DEFINE_VIA_REGSET(MO, 0x40); 128 DEFINE_VIA_REGSET(MI, 0x50); 129 130 /* AC'97 */ 131 #define VIA_REG_AC97 0x80 /* dword */ 132 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30) 133 #define VIA_REG_AC97_CODEC_ID_SHIFT 30 134 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 135 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 136 #define VIA_REG_AC97_SECONDARY_VALID (1<<27) 137 #define VIA_REG_AC97_PRIMARY_VALID (1<<25) 138 #define VIA_REG_AC97_BUSY (1<<24) 139 #define VIA_REG_AC97_READ (1<<23) 140 #define VIA_REG_AC97_CMD_SHIFT 16 141 #define VIA_REG_AC97_CMD_MASK 0x7e 142 #define VIA_REG_AC97_DATA_SHIFT 0 143 #define VIA_REG_AC97_DATA_MASK 0xffff 144 145 #define VIA_REG_SGD_SHADOW 0x84 /* dword */ 146 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0) 147 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1) 148 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2) 149 #define VIA_REG_SGD_STAT_PB_EOL (1<<4) 150 #define VIA_REG_SGD_STAT_CP_EOL (1<<5) 151 #define VIA_REG_SGD_STAT_FM_EOL (1<<6) 152 #define VIA_REG_SGD_STAT_PB_STOP (1<<8) 153 #define VIA_REG_SGD_STAT_CP_STOP (1<<9) 154 #define VIA_REG_SGD_STAT_FM_STOP (1<<10) 155 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) 156 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) 157 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) 158 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16) 159 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17) 160 #define VIA_REG_SGD_STAT_MR_EOL (1<<20) 161 #define VIA_REG_SGD_STAT_MW_EOL (1<<21) 162 #define VIA_REG_SGD_STAT_MR_STOP (1<<24) 163 #define VIA_REG_SGD_STAT_MW_STOP (1<<25) 164 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) 165 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) 166 167 #define VIA_REG_GPI_STATUS 0x88 168 #define VIA_REG_GPI_INTR 0x8c 169 170 #define VIA_TBL_BIT_FLAG 0x40000000 171 #define VIA_TBL_BIT_EOL 0x80000000 172 173 /* pci space */ 174 #define VIA_ACLINK_STAT 0x40 175 #define VIA_ACLINK_C11_READY 0x20 176 #define VIA_ACLINK_C10_READY 0x10 177 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ 178 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ 179 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ 180 #define VIA_ACLINK_CTRL 0x41 181 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ 182 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ 183 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ 184 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ 185 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ 186 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ 187 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ 188 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ 189 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ 190 VIA_ACLINK_CTRL_RESET|\ 191 VIA_ACLINK_CTRL_PCM) 192 #define VIA_FUNC_ENABLE 0x42 193 #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ 194 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ 195 #define VIA_FUNC_RX2C_WRITE 0x20 196 #define VIA_FUNC_SB_FIFO_EMPTY 0x10 197 #define VIA_FUNC_ENABLE_GAME 0x08 198 #define VIA_FUNC_ENABLE_FM 0x04 199 #define VIA_FUNC_ENABLE_MIDI 0x02 200 #define VIA_FUNC_ENABLE_SB 0x01 201 #define VIA_PNP_CONTROL 0x43 202 #define VIA_MC97_CTRL 0x44 203 #define VIA_MC97_CTRL_ENABLE 0x80 204 #define VIA_MC97_CTRL_SECONDARY 0x40 205 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ 206 VIA_MC97_CTRL_SECONDARY) 207 208 209 /* 210 * pcm stream 211 */ 212 213 struct snd_via_sg_table { 214 unsigned int offset; 215 unsigned int size; 216 } ; 217 218 #define VIA_TABLE_SIZE 255 219 220 struct viadev { 221 unsigned int reg_offset; 222 unsigned long port; 223 int direction; /* playback = 0, capture = 1 */ 224 struct snd_pcm_substream *substream; 225 int running; 226 unsigned int tbl_entries; /* # descriptors */ 227 struct snd_dma_buffer table; 228 struct snd_via_sg_table *idx_table; 229 /* for recovery from the unexpected pointer */ 230 unsigned int lastpos; 231 unsigned int bufsize; 232 unsigned int bufsize2; 233 }; 234 235 enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 236 237 #define VIA_MAX_MODEM_DEVS 2 238 239 struct via82xx_modem { 240 int irq; 241 242 unsigned long port; 243 244 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 245 246 struct pci_dev *pci; 247 struct snd_card *card; 248 249 unsigned int num_devs; 250 unsigned int playback_devno, capture_devno; 251 struct viadev devs[VIA_MAX_MODEM_DEVS]; 252 253 struct snd_pcm *pcms[2]; 254 255 struct snd_ac97_bus *ac97_bus; 256 struct snd_ac97 *ac97; 257 unsigned int ac97_clock; 258 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 259 260 spinlock_t reg_lock; 261 struct snd_info_entry *proc_entry; 262 }; 263 264 static struct pci_device_id snd_via82xx_modem_ids[] = { 265 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, }, 266 { 0, } 267 }; 268 269 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 270 271 /* 272 */ 273 274 /* 275 * allocate and initialize the descriptor buffers 276 * periods = number of periods 277 * fragsize = period size in bytes 278 */ 279 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 280 struct pci_dev *pci, 281 unsigned int periods, unsigned int fragsize) 282 { 283 unsigned int i, idx, ofs, rest; 284 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 285 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); 286 287 if (dev->table.area == NULL) { 288 /* the start of each lists must be aligned to 8 bytes, 289 * but the kernel pages are much bigger, so we don't care 290 */ 291 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 292 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 293 &dev->table) < 0) 294 return -ENOMEM; 295 } 296 if (! dev->idx_table) { 297 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, 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; 314 315 if (idx >= VIA_TABLE_SIZE) { 316 snd_printk(KERN_ERR "via82xx: too much table size!\n"); 317 return -EINVAL; 318 } 319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); 320 r = PAGE_SIZE - (ofs % PAGE_SIZE); 321 if (rest < r) 322 r = rest; 323 rest -= r; 324 if (! rest) { 325 if (i == periods - 1) 326 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 327 else 328 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 329 } else 330 flag = 0; /* period continues to the next */ 331 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); 332 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 333 dev->idx_table[idx].offset = ofs; 334 dev->idx_table[idx].size = r; 335 ofs += r; 336 idx++; 337 } while (rest > 0); 338 } 339 dev->tbl_entries = idx; 340 dev->bufsize = periods * fragsize; 341 dev->bufsize2 = dev->bufsize / 2; 342 return 0; 343 } 344 345 346 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 347 struct pci_dev *pci) 348 { 349 if (dev->table.area) { 350 snd_dma_free_pages(&dev->table); 351 dev->table.area = NULL; 352 } 353 kfree(dev->idx_table); 354 dev->idx_table = NULL; 355 return 0; 356 } 357 358 /* 359 * Basic I/O 360 */ 361 362 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) 363 { 364 return inl(VIAREG(chip, AC97)); 365 } 366 367 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) 368 { 369 outl(val, VIAREG(chip, AC97)); 370 } 371 372 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) 373 { 374 unsigned int timeout = 1000; /* 1ms */ 375 unsigned int val; 376 377 while (timeout-- > 0) { 378 udelay(1); 379 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 380 return val & 0xffff; 381 } 382 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", 383 secondary, snd_via82xx_codec_xread(chip)); 384 return -EIO; 385 } 386 387 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) 388 { 389 unsigned int timeout = 1000; /* 1ms */ 390 unsigned int val, val1; 391 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 392 VIA_REG_AC97_SECONDARY_VALID; 393 394 while (timeout-- > 0) { 395 val = snd_via82xx_codec_xread(chip); 396 val1 = val & (VIA_REG_AC97_BUSY | stat); 397 if (val1 == stat) 398 return val & 0xffff; 399 udelay(1); 400 } 401 return -EIO; 402 } 403 404 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) 405 { 406 struct via82xx_modem *chip = ac97->private_data; 407 int err; 408 err = snd_via82xx_codec_ready(chip, ac97->num); 409 /* here we need to wait fairly for long time.. */ 410 msleep(500); 411 } 412 413 static void snd_via82xx_codec_write(struct snd_ac97 *ac97, 414 unsigned short reg, 415 unsigned short val) 416 { 417 struct via82xx_modem *chip = ac97->private_data; 418 unsigned int xval; 419 if(reg == AC97_GPIO_STATUS) { 420 outl(val, VIAREG(chip, GPI_STATUS)); 421 return; 422 } 423 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 424 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 425 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 426 xval |= val << VIA_REG_AC97_DATA_SHIFT; 427 snd_via82xx_codec_xwrite(chip, xval); 428 snd_via82xx_codec_ready(chip, ac97->num); 429 } 430 431 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) 432 { 433 struct via82xx_modem *chip = ac97->private_data; 434 unsigned int xval, val = 0xffff; 435 int again = 0; 436 437 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 438 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 439 xval |= VIA_REG_AC97_READ; 440 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 441 while (1) { 442 if (again++ > 3) { 443 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 444 ac97->num, snd_via82xx_codec_xread(chip)); 445 return 0xffff; 446 } 447 snd_via82xx_codec_xwrite(chip, xval); 448 udelay (20); 449 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 450 udelay(25); 451 val = snd_via82xx_codec_xread(chip); 452 break; 453 } 454 } 455 return val & 0xffff; 456 } 457 458 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) 459 { 460 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 461 VIADEV_REG(viadev, OFFSET_CONTROL)); 462 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 463 udelay(50); 464 /* disable interrupts */ 465 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 466 /* clear interrupts */ 467 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 468 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 469 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 470 viadev->lastpos = 0; 471 } 472 473 474 /* 475 * Interrupt handler 476 */ 477 478 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) 479 { 480 struct via82xx_modem *chip = dev_id; 481 unsigned int status; 482 unsigned int i; 483 484 status = inl(VIAREG(chip, SGD_SHADOW)); 485 if (! (status & chip->intr_mask)) { 486 return IRQ_NONE; 487 } 488 // _skip_sgd: 489 490 /* check status for each stream */ 491 spin_lock(&chip->reg_lock); 492 for (i = 0; i < chip->num_devs; i++) { 493 struct viadev *viadev = &chip->devs[i]; 494 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 495 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 496 if (! c_status) 497 continue; 498 if (viadev->substream && viadev->running) { 499 spin_unlock(&chip->reg_lock); 500 snd_pcm_period_elapsed(viadev->substream); 501 spin_lock(&chip->reg_lock); 502 } 503 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 504 } 505 spin_unlock(&chip->reg_lock); 506 return IRQ_HANDLED; 507 } 508 509 /* 510 * PCM callbacks 511 */ 512 513 /* 514 * trigger callback 515 */ 516 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 517 { 518 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 519 struct viadev *viadev = substream->runtime->private_data; 520 unsigned char val = 0; 521 522 switch (cmd) { 523 case SNDRV_PCM_TRIGGER_START: 524 case SNDRV_PCM_TRIGGER_SUSPEND: 525 val |= VIA_REG_CTRL_START; 526 viadev->running = 1; 527 break; 528 case SNDRV_PCM_TRIGGER_STOP: 529 val = VIA_REG_CTRL_TERMINATE; 530 viadev->running = 0; 531 break; 532 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 533 val |= VIA_REG_CTRL_PAUSE; 534 viadev->running = 0; 535 break; 536 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 537 viadev->running = 1; 538 break; 539 default: 540 return -EINVAL; 541 } 542 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 543 if (cmd == SNDRV_PCM_TRIGGER_STOP) 544 snd_via82xx_channel_reset(chip, viadev); 545 return 0; 546 } 547 548 /* 549 * pointer callbacks 550 */ 551 552 /* 553 * calculate the linear position at the given sg-buffer index and the rest count 554 */ 555 556 #define check_invalid_pos(viadev,pos) \ 557 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ 558 viadev->lastpos < viadev->bufsize2)) 559 560 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx, 561 unsigned int count) 562 { 563 unsigned int size, res; 564 565 size = viadev->idx_table[idx].size; 566 res = viadev->idx_table[idx].offset + size - count; 567 568 /* check the validity of the calculated position */ 569 if (size < count) { 570 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", 571 (int)size, (int)count); 572 res = viadev->lastpos; 573 } else if (check_invalid_pos(viadev, res)) { 574 #ifdef POINTER_DEBUG 575 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, " 576 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, " 577 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, 578 viadev->bufsize2, viadev->idx_table[idx].offset, 579 viadev->idx_table[idx].size, count); 580 #endif 581 if (count && size < count) { 582 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " 583 "using last valid pointer\n"); 584 res = viadev->lastpos; 585 } else { 586 if (! count) 587 /* bogus count 0 on the DMA boundary? */ 588 res = viadev->idx_table[idx].offset; 589 else 590 /* count register returns full size 591 * when end of buffer is reached 592 */ 593 res = viadev->idx_table[idx].offset + size; 594 if (check_invalid_pos(viadev, res)) { 595 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), " 596 "using last valid pointer\n"); 597 res = viadev->lastpos; 598 } 599 } 600 } 601 viadev->lastpos = res; /* remember the last position */ 602 if (res >= viadev->bufsize) 603 res -= viadev->bufsize; 604 return res; 605 } 606 607 /* 608 * get the current pointer on via686 609 */ 610 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) 611 { 612 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 613 struct viadev *viadev = substream->runtime->private_data; 614 unsigned int idx, ptr, count, res; 615 616 snd_assert(viadev->tbl_entries, return 0); 617 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 618 return 0; 619 620 spin_lock(&chip->reg_lock); 621 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 622 /* The via686a does not have the current index register, 623 * so we need to calculate the index from CURR_PTR. 624 */ 625 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 626 if (ptr <= (unsigned int)viadev->table.addr) 627 idx = 0; 628 else /* CURR_PTR holds the address + 8 */ 629 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % 630 viadev->tbl_entries; 631 res = calc_linear_pos(viadev, idx, count); 632 spin_unlock(&chip->reg_lock); 633 634 return bytes_to_frames(substream->runtime, res); 635 } 636 637 /* 638 * hw_params callback: 639 * allocate the buffer and build up the buffer description table 640 */ 641 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, 642 struct snd_pcm_hw_params *hw_params) 643 { 644 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 645 struct viadev *viadev = substream->runtime->private_data; 646 int err; 647 648 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 649 if (err < 0) 650 return err; 651 err = build_via_table(viadev, substream, chip->pci, 652 params_periods(hw_params), 653 params_period_bytes(hw_params)); 654 if (err < 0) 655 return err; 656 657 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 658 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 659 660 return 0; 661 } 662 663 /* 664 * hw_free callback: 665 * clean up the buffer description table and release the buffer 666 */ 667 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) 668 { 669 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 670 struct viadev *viadev = substream->runtime->private_data; 671 672 clean_via_table(viadev, substream, chip->pci); 673 snd_pcm_lib_free_pages(substream); 674 return 0; 675 } 676 677 678 /* 679 * set up the table pointer 680 */ 681 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) 682 { 683 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 684 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 685 udelay(20); 686 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 687 } 688 689 /* 690 * prepare callback for playback and capture 691 */ 692 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) 693 { 694 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 695 struct viadev *viadev = substream->runtime->private_data; 696 697 snd_via82xx_channel_reset(chip, viadev); 698 /* this must be set after channel_reset */ 699 snd_via82xx_set_table_ptr(chip, viadev); 700 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 701 VIADEV_REG(viadev, OFFSET_TYPE)); 702 return 0; 703 } 704 705 /* 706 * pcm hardware definition, identical for both playback and capture 707 */ 708 static struct snd_pcm_hardware snd_via82xx_hw = 709 { 710 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 711 SNDRV_PCM_INFO_BLOCK_TRANSFER | 712 SNDRV_PCM_INFO_MMAP_VALID | 713 /* SNDRV_PCM_INFO_RESUME | */ 714 SNDRV_PCM_INFO_PAUSE), 715 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 716 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 717 .rate_min = 8000, 718 .rate_max = 16000, 719 .channels_min = 1, 720 .channels_max = 1, 721 .buffer_bytes_max = 128 * 1024, 722 .period_bytes_min = 32, 723 .period_bytes_max = 128 * 1024, 724 .periods_min = 2, 725 .periods_max = VIA_TABLE_SIZE / 2, 726 .fifo_size = 0, 727 }; 728 729 730 /* 731 * open callback skeleton 732 */ 733 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, 734 struct snd_pcm_substream *substream) 735 { 736 struct snd_pcm_runtime *runtime = substream->runtime; 737 int err; 738 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 739 static struct snd_pcm_hw_constraint_list hw_constraints_rates = { 740 .count = ARRAY_SIZE(rates), 741 .list = rates, 742 .mask = 0, 743 }; 744 745 runtime->hw = snd_via82xx_hw; 746 747 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 748 &hw_constraints_rates)) < 0) 749 return err; 750 751 /* we may remove following constaint when we modify table entries 752 in interrupt */ 753 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 754 return err; 755 756 runtime->private_data = viadev; 757 viadev->substream = substream; 758 759 return 0; 760 } 761 762 763 /* 764 * open callback for playback 765 */ 766 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) 767 { 768 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 769 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; 770 771 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 772 } 773 774 /* 775 * open callback for capture 776 */ 777 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) 778 { 779 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 780 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 781 782 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 783 } 784 785 /* 786 * close callback 787 */ 788 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) 789 { 790 struct viadev *viadev = substream->runtime->private_data; 791 792 viadev->substream = NULL; 793 return 0; 794 } 795 796 797 /* via686 playback callbacks */ 798 static struct snd_pcm_ops snd_via686_playback_ops = { 799 .open = snd_via82xx_playback_open, 800 .close = snd_via82xx_pcm_close, 801 .ioctl = snd_pcm_lib_ioctl, 802 .hw_params = snd_via82xx_hw_params, 803 .hw_free = snd_via82xx_hw_free, 804 .prepare = snd_via82xx_pcm_prepare, 805 .trigger = snd_via82xx_pcm_trigger, 806 .pointer = snd_via686_pcm_pointer, 807 .page = snd_pcm_sgbuf_ops_page, 808 }; 809 810 /* via686 capture callbacks */ 811 static struct snd_pcm_ops snd_via686_capture_ops = { 812 .open = snd_via82xx_capture_open, 813 .close = snd_via82xx_pcm_close, 814 .ioctl = snd_pcm_lib_ioctl, 815 .hw_params = snd_via82xx_hw_params, 816 .hw_free = snd_via82xx_hw_free, 817 .prepare = snd_via82xx_pcm_prepare, 818 .trigger = snd_via82xx_pcm_trigger, 819 .pointer = snd_via686_pcm_pointer, 820 .page = snd_pcm_sgbuf_ops_page, 821 }; 822 823 824 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, 825 int direction) 826 { 827 chip->devs[idx].reg_offset = reg_offset; 828 chip->devs[idx].direction = direction; 829 chip->devs[idx].port = chip->port + reg_offset; 830 } 831 832 /* 833 * create a pcm instance for via686a/b 834 */ 835 static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip) 836 { 837 struct snd_pcm *pcm; 838 int err; 839 840 chip->playback_devno = 0; 841 chip->capture_devno = 1; 842 chip->num_devs = 2; 843 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 844 845 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 846 if (err < 0) 847 return err; 848 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 849 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 850 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 851 pcm->private_data = chip; 852 strcpy(pcm->name, chip->card->shortname); 853 chip->pcms[0] = pcm; 854 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 855 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 856 857 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 858 snd_dma_pci_data(chip->pci), 859 64*1024, 128*1024)) < 0) 860 return err; 861 862 return 0; 863 } 864 865 866 /* 867 * Mixer part 868 */ 869 870 871 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) 872 { 873 struct via82xx_modem *chip = bus->private_data; 874 chip->ac97_bus = NULL; 875 } 876 877 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) 878 { 879 struct via82xx_modem *chip = ac97->private_data; 880 chip->ac97 = NULL; 881 } 882 883 884 static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip) 885 { 886 struct snd_ac97_template ac97; 887 int err; 888 static struct snd_ac97_bus_ops ops = { 889 .write = snd_via82xx_codec_write, 890 .read = snd_via82xx_codec_read, 891 .wait = snd_via82xx_codec_wait, 892 }; 893 894 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 895 return err; 896 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 897 chip->ac97_bus->clock = chip->ac97_clock; 898 899 memset(&ac97, 0, sizeof(ac97)); 900 ac97.private_data = chip; 901 ac97.private_free = snd_via82xx_mixer_free_ac97; 902 ac97.pci = chip->pci; 903 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 904 ac97.num = chip->ac97_secondary; 905 906 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 907 return err; 908 909 return 0; 910 } 911 912 913 /* 914 * proc interface 915 */ 916 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 917 { 918 struct via82xx_modem *chip = entry->private_data; 919 int i; 920 921 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 922 for (i = 0; i < 0xa0; i += 4) { 923 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 924 } 925 } 926 927 static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip) 928 { 929 struct snd_info_entry *entry; 930 931 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 932 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); 933 } 934 935 /* 936 * 937 */ 938 939 static int snd_via82xx_chip_init(struct via82xx_modem *chip) 940 { 941 unsigned int val; 942 unsigned long end_time; 943 unsigned char pval; 944 945 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 946 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 947 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 948 udelay(100); 949 } 950 951 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 952 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 953 /* deassert ACLink reset, force SYNC */ 954 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 955 VIA_ACLINK_CTRL_ENABLE | 956 VIA_ACLINK_CTRL_RESET | 957 VIA_ACLINK_CTRL_SYNC); 958 udelay(100); 959 #if 1 /* FIXME: should we do full reset here for all chip models? */ 960 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 961 udelay(100); 962 #else 963 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 964 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 965 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 966 udelay(2); 967 #endif 968 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 970 udelay(100); 971 } 972 973 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 974 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 975 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 976 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 977 udelay(100); 978 } 979 980 /* wait until codec ready */ 981 end_time = jiffies + msecs_to_jiffies(750); 982 do { 983 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 984 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 985 break; 986 schedule_timeout_uninterruptible(1); 987 } while (time_before(jiffies, end_time)); 988 989 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 990 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); 991 992 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 993 VIA_REG_AC97_SECONDARY_VALID | 994 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 995 end_time = jiffies + msecs_to_jiffies(750); 996 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 997 VIA_REG_AC97_SECONDARY_VALID | 998 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 999 do { 1000 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 1001 chip->ac97_secondary = 1; 1002 goto __ac97_ok2; 1003 } 1004 schedule_timeout_uninterruptible(1); 1005 } while (time_before(jiffies, end_time)); 1006 /* This is ok, the most of motherboards have only one codec */ 1007 1008 __ac97_ok2: 1009 1010 /* route FM trap to IRQ, disable FM trap */ 1011 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1012 /* disable all GPI interrupts */ 1013 outl(0, VIAREG(chip, GPI_INTR)); 1014 1015 return 0; 1016 } 1017 1018 #ifdef CONFIG_PM 1019 /* 1020 * power management 1021 */ 1022 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state) 1023 { 1024 struct snd_card *card = pci_get_drvdata(pci); 1025 struct via82xx_modem *chip = card->private_data; 1026 int i; 1027 1028 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1029 for (i = 0; i < 2; i++) 1030 snd_pcm_suspend_all(chip->pcms[i]); 1031 for (i = 0; i < chip->num_devs; i++) 1032 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1033 synchronize_irq(chip->irq); 1034 snd_ac97_suspend(chip->ac97); 1035 1036 pci_disable_device(pci); 1037 pci_save_state(pci); 1038 pci_set_power_state(pci, pci_choose_state(pci, state)); 1039 return 0; 1040 } 1041 1042 static int snd_via82xx_resume(struct pci_dev *pci) 1043 { 1044 struct snd_card *card = pci_get_drvdata(pci); 1045 struct via82xx_modem *chip = card->private_data; 1046 int i; 1047 1048 pci_set_power_state(pci, PCI_D0); 1049 pci_restore_state(pci); 1050 if (pci_enable_device(pci) < 0) { 1051 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, " 1052 "disabling device\n"); 1053 snd_card_disconnect(card); 1054 return -EIO; 1055 } 1056 pci_set_master(pci); 1057 1058 snd_via82xx_chip_init(chip); 1059 1060 snd_ac97_resume(chip->ac97); 1061 1062 for (i = 0; i < chip->num_devs; i++) 1063 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1064 1065 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1066 return 0; 1067 } 1068 #endif /* CONFIG_PM */ 1069 1070 static int snd_via82xx_free(struct via82xx_modem *chip) 1071 { 1072 unsigned int i; 1073 1074 if (chip->irq < 0) 1075 goto __end_hw; 1076 /* disable interrupts */ 1077 for (i = 0; i < chip->num_devs; i++) 1078 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1079 synchronize_irq(chip->irq); 1080 __end_hw: 1081 if (chip->irq >= 0) 1082 free_irq(chip->irq, chip); 1083 pci_release_regions(chip->pci); 1084 pci_disable_device(chip->pci); 1085 kfree(chip); 1086 return 0; 1087 } 1088 1089 static int snd_via82xx_dev_free(struct snd_device *device) 1090 { 1091 struct via82xx_modem *chip = device->device_data; 1092 return snd_via82xx_free(chip); 1093 } 1094 1095 static int __devinit snd_via82xx_create(struct snd_card *card, 1096 struct pci_dev *pci, 1097 int chip_type, 1098 int revision, 1099 unsigned int ac97_clock, 1100 struct via82xx_modem ** r_via) 1101 { 1102 struct via82xx_modem *chip; 1103 int err; 1104 static struct snd_device_ops ops = { 1105 .dev_free = snd_via82xx_dev_free, 1106 }; 1107 1108 if ((err = pci_enable_device(pci)) < 0) 1109 return err; 1110 1111 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 1112 pci_disable_device(pci); 1113 return -ENOMEM; 1114 } 1115 1116 spin_lock_init(&chip->reg_lock); 1117 chip->card = card; 1118 chip->pci = pci; 1119 chip->irq = -1; 1120 1121 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1122 kfree(chip); 1123 pci_disable_device(pci); 1124 return err; 1125 } 1126 chip->port = pci_resource_start(pci, 0); 1127 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, 1128 card->driver, chip)) { 1129 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); 1130 snd_via82xx_free(chip); 1131 return -EBUSY; 1132 } 1133 chip->irq = pci->irq; 1134 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1135 chip->ac97_clock = ac97_clock; 1136 synchronize_irq(chip->irq); 1137 1138 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1139 snd_via82xx_free(chip); 1140 return err; 1141 } 1142 1143 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1144 snd_via82xx_free(chip); 1145 return err; 1146 } 1147 1148 /* The 8233 ac97 controller does not implement the master bit 1149 * in the pci command register. IMHO this is a violation of the PCI spec. 1150 * We call pci_set_master here because it does not hurt. */ 1151 pci_set_master(pci); 1152 1153 snd_card_set_dev(card, &pci->dev); 1154 1155 *r_via = chip; 1156 return 0; 1157 } 1158 1159 1160 static int __devinit snd_via82xx_probe(struct pci_dev *pci, 1161 const struct pci_device_id *pci_id) 1162 { 1163 struct snd_card *card; 1164 struct via82xx_modem *chip; 1165 int chip_type = 0, card_type; 1166 unsigned int i; 1167 int err; 1168 1169 card = snd_card_new(index, id, THIS_MODULE, 0); 1170 if (card == NULL) 1171 return -ENOMEM; 1172 1173 card_type = pci_id->driver_data; 1174 switch (card_type) { 1175 case TYPE_CARD_VIA82XX_MODEM: 1176 strcpy(card->driver, "VIA82XX-MODEM"); 1177 sprintf(card->shortname, "VIA 82XX modem"); 1178 break; 1179 default: 1180 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1181 err = -EINVAL; 1182 goto __error; 1183 } 1184 1185 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, 1186 ac97_clock, &chip)) < 0) 1187 goto __error; 1188 card->private_data = chip; 1189 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1190 goto __error; 1191 1192 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1193 goto __error; 1194 1195 /* disable interrupts */ 1196 for (i = 0; i < chip->num_devs; i++) 1197 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1198 1199 sprintf(card->longname, "%s at 0x%lx, irq %d", 1200 card->shortname, chip->port, chip->irq); 1201 1202 snd_via82xx_proc_init(chip); 1203 1204 if ((err = snd_card_register(card)) < 0) { 1205 snd_card_free(card); 1206 return err; 1207 } 1208 pci_set_drvdata(pci, card); 1209 return 0; 1210 1211 __error: 1212 snd_card_free(card); 1213 return err; 1214 } 1215 1216 static void __devexit snd_via82xx_remove(struct pci_dev *pci) 1217 { 1218 snd_card_free(pci_get_drvdata(pci)); 1219 pci_set_drvdata(pci, NULL); 1220 } 1221 1222 static struct pci_driver driver = { 1223 .name = "VIA 82xx Modem", 1224 .id_table = snd_via82xx_modem_ids, 1225 .probe = snd_via82xx_probe, 1226 .remove = __devexit_p(snd_via82xx_remove), 1227 #ifdef CONFIG_PM 1228 .suspend = snd_via82xx_suspend, 1229 .resume = snd_via82xx_resume, 1230 #endif 1231 }; 1232 1233 static int __init alsa_card_via82xx_init(void) 1234 { 1235 return pci_register_driver(&driver); 1236 } 1237 1238 static void __exit alsa_card_via82xx_exit(void) 1239 { 1240 pci_unregister_driver(&driver); 1241 } 1242 1243 module_init(alsa_card_via82xx_init) 1244 module_exit(alsa_card_via82xx_exit) 1245