1 /* 2 * ALSA modem driver for VIA VT82xx (South Bridge) 3 * 4 * VT82C686A/B/C, VT8233A/C, VT8235 5 * 6 * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz> 7 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com> 8 * 2002 Takashi Iwai <tiwai@suse.de> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 */ 25 26 /* 27 * Changes: 28 * 29 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org> 30 * Modified from original audio driver 'via82xx.c' to support AC97 31 * modems. 32 */ 33 34 #include <sound/driver.h> 35 #include <asm/io.h> 36 #include <linux/delay.h> 37 #include <linux/interrupt.h> 38 #include <linux/init.h> 39 #include <linux/pci.h> 40 #include <linux/slab.h> 41 #include <linux/moduleparam.h> 42 #include <sound/core.h> 43 #include <sound/pcm.h> 44 #include <sound/pcm_params.h> 45 #include <sound/info.h> 46 #include <sound/ac97_codec.h> 47 #include <sound/initval.h> 48 49 #if 0 50 #define POINTER_DEBUG 51 #endif 52 53 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.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 typedef struct _snd_via82xx_modem via82xx_t; 210 typedef struct via_dev viadev_t; 211 212 /* 213 * pcm stream 214 */ 215 216 struct snd_via_sg_table { 217 unsigned int offset; 218 unsigned int size; 219 } ; 220 221 #define VIA_TABLE_SIZE 255 222 223 struct via_dev { 224 unsigned int reg_offset; 225 unsigned long port; 226 int direction; /* playback = 0, capture = 1 */ 227 snd_pcm_substream_t *substream; 228 int running; 229 unsigned int tbl_entries; /* # descriptors */ 230 struct snd_dma_buffer table; 231 struct snd_via_sg_table *idx_table; 232 /* for recovery from the unexpected pointer */ 233 unsigned int lastpos; 234 unsigned int bufsize; 235 unsigned int bufsize2; 236 }; 237 238 enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 239 240 #define VIA_MAX_MODEM_DEVS 2 241 242 struct _snd_via82xx_modem { 243 int irq; 244 245 unsigned long port; 246 247 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 248 249 struct pci_dev *pci; 250 snd_card_t *card; 251 252 unsigned int num_devs; 253 unsigned int playback_devno, capture_devno; 254 viadev_t devs[VIA_MAX_MODEM_DEVS]; 255 256 snd_pcm_t *pcms[2]; 257 258 ac97_bus_t *ac97_bus; 259 ac97_t *ac97; 260 unsigned int ac97_clock; 261 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 262 263 spinlock_t reg_lock; 264 snd_info_entry_t *proc_entry; 265 }; 266 267 static struct pci_device_id snd_via82xx_modem_ids[] = { 268 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, }, 269 { 0, } 270 }; 271 272 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 273 274 /* 275 */ 276 277 /* 278 * allocate and initialize the descriptor buffers 279 * periods = number of periods 280 * fragsize = period size in bytes 281 */ 282 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream, 283 struct pci_dev *pci, 284 unsigned int periods, unsigned int fragsize) 285 { 286 unsigned int i, idx, ofs, rest; 287 via82xx_t *chip = snd_pcm_substream_chip(substream); 288 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); 289 290 if (dev->table.area == NULL) { 291 /* the start of each lists must be aligned to 8 bytes, 292 * but the kernel pages are much bigger, so we don't care 293 */ 294 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 295 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 296 &dev->table) < 0) 297 return -ENOMEM; 298 } 299 if (! dev->idx_table) { 300 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); 301 if (! dev->idx_table) 302 return -ENOMEM; 303 } 304 305 /* fill the entries */ 306 idx = 0; 307 ofs = 0; 308 for (i = 0; i < periods; i++) { 309 rest = fragsize; 310 /* fill descriptors for a period. 311 * a period can be split to several descriptors if it's 312 * over page boundary. 313 */ 314 do { 315 unsigned int r; 316 unsigned int flag; 317 318 if (idx >= VIA_TABLE_SIZE) { 319 snd_printk(KERN_ERR "via82xx: too much table size!\n"); 320 return -EINVAL; 321 } 322 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); 323 r = PAGE_SIZE - (ofs % PAGE_SIZE); 324 if (rest < r) 325 r = rest; 326 rest -= r; 327 if (! rest) { 328 if (i == periods - 1) 329 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 330 else 331 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 332 } else 333 flag = 0; /* period continues to the next */ 334 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); 335 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 336 dev->idx_table[idx].offset = ofs; 337 dev->idx_table[idx].size = r; 338 ofs += r; 339 idx++; 340 } while (rest > 0); 341 } 342 dev->tbl_entries = idx; 343 dev->bufsize = periods * fragsize; 344 dev->bufsize2 = dev->bufsize / 2; 345 return 0; 346 } 347 348 349 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream, 350 struct pci_dev *pci) 351 { 352 if (dev->table.area) { 353 snd_dma_free_pages(&dev->table); 354 dev->table.area = NULL; 355 } 356 kfree(dev->idx_table); 357 dev->idx_table = NULL; 358 return 0; 359 } 360 361 /* 362 * Basic I/O 363 */ 364 365 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip) 366 { 367 return inl(VIAREG(chip, AC97)); 368 } 369 370 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val) 371 { 372 outl(val, VIAREG(chip, AC97)); 373 } 374 375 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary) 376 { 377 unsigned int timeout = 1000; /* 1ms */ 378 unsigned int val; 379 380 while (timeout-- > 0) { 381 udelay(1); 382 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 383 return val & 0xffff; 384 } 385 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip)); 386 return -EIO; 387 } 388 389 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary) 390 { 391 unsigned int timeout = 1000; /* 1ms */ 392 unsigned int val, val1; 393 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 394 VIA_REG_AC97_SECONDARY_VALID; 395 396 while (timeout-- > 0) { 397 val = snd_via82xx_codec_xread(chip); 398 val1 = val & (VIA_REG_AC97_BUSY | stat); 399 if (val1 == stat) 400 return val & 0xffff; 401 udelay(1); 402 } 403 return -EIO; 404 } 405 406 static void snd_via82xx_codec_wait(ac97_t *ac97) 407 { 408 via82xx_t *chip = ac97->private_data; 409 int err; 410 err = snd_via82xx_codec_ready(chip, ac97->num); 411 /* here we need to wait fairly for long time.. */ 412 msleep(500); 413 } 414 415 static void snd_via82xx_codec_write(ac97_t *ac97, 416 unsigned short reg, 417 unsigned short val) 418 { 419 via82xx_t *chip = ac97->private_data; 420 unsigned int xval; 421 if(reg == AC97_GPIO_STATUS) { 422 outl(val, VIAREG(chip, GPI_STATUS)); 423 return; 424 } 425 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 426 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 427 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 428 xval |= val << VIA_REG_AC97_DATA_SHIFT; 429 snd_via82xx_codec_xwrite(chip, xval); 430 snd_via82xx_codec_ready(chip, ac97->num); 431 } 432 433 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg) 434 { 435 via82xx_t *chip = ac97->private_data; 436 unsigned int xval, val = 0xffff; 437 int again = 0; 438 439 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 440 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 441 xval |= VIA_REG_AC97_READ; 442 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 443 while (1) { 444 if (again++ > 3) { 445 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip)); 446 return 0xffff; 447 } 448 snd_via82xx_codec_xwrite(chip, xval); 449 udelay (20); 450 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 451 udelay(25); 452 val = snd_via82xx_codec_xread(chip); 453 break; 454 } 455 } 456 return val & 0xffff; 457 } 458 459 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev) 460 { 461 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 462 VIADEV_REG(viadev, OFFSET_CONTROL)); 463 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 464 udelay(50); 465 /* disable interrupts */ 466 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 467 /* clear interrupts */ 468 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 469 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 470 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 471 viadev->lastpos = 0; 472 } 473 474 475 /* 476 * Interrupt handler 477 */ 478 479 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs) 480 { 481 via82xx_t *chip = dev_id; 482 unsigned int status; 483 unsigned int i; 484 485 status = inl(VIAREG(chip, SGD_SHADOW)); 486 if (! (status & chip->intr_mask)) { 487 return IRQ_NONE; 488 } 489 // _skip_sgd: 490 491 /* check status for each stream */ 492 spin_lock(&chip->reg_lock); 493 for (i = 0; i < chip->num_devs; i++) { 494 viadev_t *viadev = &chip->devs[i]; 495 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 496 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 497 if (! c_status) 498 continue; 499 if (viadev->substream && viadev->running) { 500 spin_unlock(&chip->reg_lock); 501 snd_pcm_period_elapsed(viadev->substream); 502 spin_lock(&chip->reg_lock); 503 } 504 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 505 } 506 spin_unlock(&chip->reg_lock); 507 return IRQ_HANDLED; 508 } 509 510 /* 511 * PCM callbacks 512 */ 513 514 /* 515 * trigger callback 516 */ 517 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd) 518 { 519 via82xx_t *chip = snd_pcm_substream_chip(substream); 520 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 521 unsigned char val = 0; 522 523 switch (cmd) { 524 case SNDRV_PCM_TRIGGER_START: 525 case SNDRV_PCM_TRIGGER_SUSPEND: 526 val |= VIA_REG_CTRL_START; 527 viadev->running = 1; 528 break; 529 case SNDRV_PCM_TRIGGER_STOP: 530 val = VIA_REG_CTRL_TERMINATE; 531 viadev->running = 0; 532 break; 533 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 534 val |= VIA_REG_CTRL_PAUSE; 535 viadev->running = 0; 536 break; 537 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 538 viadev->running = 1; 539 break; 540 default: 541 return -EINVAL; 542 } 543 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 544 if (cmd == SNDRV_PCM_TRIGGER_STOP) 545 snd_via82xx_channel_reset(chip, viadev); 546 return 0; 547 } 548 549 /* 550 * pointer callbacks 551 */ 552 553 /* 554 * calculate the linear position at the given sg-buffer index and the rest count 555 */ 556 557 #define check_invalid_pos(viadev,pos) \ 558 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2)) 559 560 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, 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", (int)size, (int)count); 570 res = viadev->lastpos; 571 } else if (check_invalid_pos(viadev, res)) { 572 #ifdef POINTER_DEBUG 573 printk("fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count); 574 #endif 575 if (count && size < count) { 576 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n"); 577 res = viadev->lastpos; 578 } else { 579 if (! count) 580 /* bogus count 0 on the DMA boundary? */ 581 res = viadev->idx_table[idx].offset; 582 else 583 /* count register returns full size when end of buffer is reached */ 584 res = viadev->idx_table[idx].offset + size; 585 if (check_invalid_pos(viadev, res)) { 586 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n"); 587 res = viadev->lastpos; 588 } 589 } 590 } 591 viadev->lastpos = res; /* remember the last position */ 592 if (res >= viadev->bufsize) 593 res -= viadev->bufsize; 594 return res; 595 } 596 597 /* 598 * get the current pointer on via686 599 */ 600 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream) 601 { 602 via82xx_t *chip = snd_pcm_substream_chip(substream); 603 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 604 unsigned int idx, ptr, count, res; 605 606 snd_assert(viadev->tbl_entries, return 0); 607 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 608 return 0; 609 610 spin_lock(&chip->reg_lock); 611 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 612 /* The via686a does not have the current index register, 613 * so we need to calculate the index from CURR_PTR. 614 */ 615 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 616 if (ptr <= (unsigned int)viadev->table.addr) 617 idx = 0; 618 else /* CURR_PTR holds the address + 8 */ 619 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries; 620 res = calc_linear_pos(viadev, idx, count); 621 spin_unlock(&chip->reg_lock); 622 623 return bytes_to_frames(substream->runtime, res); 624 } 625 626 /* 627 * hw_params callback: 628 * allocate the buffer and build up the buffer description table 629 */ 630 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream, 631 snd_pcm_hw_params_t * hw_params) 632 { 633 via82xx_t *chip = snd_pcm_substream_chip(substream); 634 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 635 int err; 636 637 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 638 if (err < 0) 639 return err; 640 err = build_via_table(viadev, substream, chip->pci, 641 params_periods(hw_params), 642 params_period_bytes(hw_params)); 643 if (err < 0) 644 return err; 645 646 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 647 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 648 649 return 0; 650 } 651 652 /* 653 * hw_free callback: 654 * clean up the buffer description table and release the buffer 655 */ 656 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream) 657 { 658 via82xx_t *chip = snd_pcm_substream_chip(substream); 659 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 660 661 clean_via_table(viadev, substream, chip->pci); 662 snd_pcm_lib_free_pages(substream); 663 return 0; 664 } 665 666 667 /* 668 * set up the table pointer 669 */ 670 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev) 671 { 672 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 673 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 674 udelay(20); 675 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 676 } 677 678 /* 679 * prepare callback for playback and capture 680 */ 681 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream) 682 { 683 via82xx_t *chip = snd_pcm_substream_chip(substream); 684 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 685 686 snd_via82xx_channel_reset(chip, viadev); 687 /* this must be set after channel_reset */ 688 snd_via82xx_set_table_ptr(chip, viadev); 689 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 690 VIADEV_REG(viadev, OFFSET_TYPE)); 691 return 0; 692 } 693 694 /* 695 * pcm hardware definition, identical for both playback and capture 696 */ 697 static snd_pcm_hardware_t snd_via82xx_hw = 698 { 699 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 700 SNDRV_PCM_INFO_BLOCK_TRANSFER | 701 SNDRV_PCM_INFO_MMAP_VALID | 702 /* SNDRV_PCM_INFO_RESUME | */ 703 SNDRV_PCM_INFO_PAUSE), 704 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 705 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 706 .rate_min = 8000, 707 .rate_max = 16000, 708 .channels_min = 1, 709 .channels_max = 1, 710 .buffer_bytes_max = 128 * 1024, 711 .period_bytes_min = 32, 712 .period_bytes_max = 128 * 1024, 713 .periods_min = 2, 714 .periods_max = VIA_TABLE_SIZE / 2, 715 .fifo_size = 0, 716 }; 717 718 719 /* 720 * open callback skeleton 721 */ 722 static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream) 723 { 724 snd_pcm_runtime_t *runtime = substream->runtime; 725 int err; 726 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 727 static snd_pcm_hw_constraint_list_t hw_constraints_rates = { 728 .count = ARRAY_SIZE(rates), 729 .list = rates, 730 .mask = 0, 731 }; 732 733 runtime->hw = snd_via82xx_hw; 734 735 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0) 736 return err; 737 738 /* we may remove following constaint when we modify table entries 739 in interrupt */ 740 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 741 return err; 742 743 runtime->private_data = viadev; 744 viadev->substream = substream; 745 746 return 0; 747 } 748 749 750 /* 751 * open callback for playback 752 */ 753 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream) 754 { 755 via82xx_t *chip = snd_pcm_substream_chip(substream); 756 viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number]; 757 758 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 759 } 760 761 /* 762 * open callback for capture 763 */ 764 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream) 765 { 766 via82xx_t *chip = snd_pcm_substream_chip(substream); 767 viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 768 769 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 770 } 771 772 /* 773 * close callback 774 */ 775 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream) 776 { 777 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 778 779 viadev->substream = NULL; 780 return 0; 781 } 782 783 784 /* via686 playback callbacks */ 785 static snd_pcm_ops_t snd_via686_playback_ops = { 786 .open = snd_via82xx_playback_open, 787 .close = snd_via82xx_pcm_close, 788 .ioctl = snd_pcm_lib_ioctl, 789 .hw_params = snd_via82xx_hw_params, 790 .hw_free = snd_via82xx_hw_free, 791 .prepare = snd_via82xx_pcm_prepare, 792 .trigger = snd_via82xx_pcm_trigger, 793 .pointer = snd_via686_pcm_pointer, 794 .page = snd_pcm_sgbuf_ops_page, 795 }; 796 797 /* via686 capture callbacks */ 798 static snd_pcm_ops_t snd_via686_capture_ops = { 799 .open = snd_via82xx_capture_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 }; 809 810 811 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction) 812 { 813 chip->devs[idx].reg_offset = reg_offset; 814 chip->devs[idx].direction = direction; 815 chip->devs[idx].port = chip->port + reg_offset; 816 } 817 818 /* 819 * create a pcm instance for via686a/b 820 */ 821 static int __devinit snd_via686_pcm_new(via82xx_t *chip) 822 { 823 snd_pcm_t *pcm; 824 int err; 825 826 chip->playback_devno = 0; 827 chip->capture_devno = 1; 828 chip->num_devs = 2; 829 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 830 831 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 832 if (err < 0) 833 return err; 834 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 835 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 836 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 837 pcm->private_data = chip; 838 strcpy(pcm->name, chip->card->shortname); 839 chip->pcms[0] = pcm; 840 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 841 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 842 843 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 844 snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0) 845 return err; 846 847 return 0; 848 } 849 850 851 /* 852 * Mixer part 853 */ 854 855 856 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus) 857 { 858 via82xx_t *chip = bus->private_data; 859 chip->ac97_bus = NULL; 860 } 861 862 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97) 863 { 864 via82xx_t *chip = ac97->private_data; 865 chip->ac97 = NULL; 866 } 867 868 869 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip) 870 { 871 ac97_template_t ac97; 872 int err; 873 static ac97_bus_ops_t ops = { 874 .write = snd_via82xx_codec_write, 875 .read = snd_via82xx_codec_read, 876 .wait = snd_via82xx_codec_wait, 877 }; 878 879 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 880 return err; 881 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 882 chip->ac97_bus->clock = chip->ac97_clock; 883 884 memset(&ac97, 0, sizeof(ac97)); 885 ac97.private_data = chip; 886 ac97.private_free = snd_via82xx_mixer_free_ac97; 887 ac97.pci = chip->pci; 888 ac97.scaps = AC97_SCAP_SKIP_AUDIO; 889 ac97.num = chip->ac97_secondary; 890 891 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 892 return err; 893 894 return 0; 895 } 896 897 898 /* 899 * proc interface 900 */ 901 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) 902 { 903 via82xx_t *chip = entry->private_data; 904 int i; 905 906 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 907 for (i = 0; i < 0xa0; i += 4) { 908 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 909 } 910 } 911 912 static void __devinit snd_via82xx_proc_init(via82xx_t *chip) 913 { 914 snd_info_entry_t *entry; 915 916 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 917 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read); 918 } 919 920 /* 921 * 922 */ 923 924 static int snd_via82xx_chip_init(via82xx_t *chip) 925 { 926 unsigned int val; 927 unsigned long end_time; 928 unsigned char pval; 929 930 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 931 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 932 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 933 udelay(100); 934 } 935 936 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 937 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 938 /* deassert ACLink reset, force SYNC */ 939 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 940 VIA_ACLINK_CTRL_ENABLE | 941 VIA_ACLINK_CTRL_RESET | 942 VIA_ACLINK_CTRL_SYNC); 943 udelay(100); 944 #if 1 /* FIXME: should we do full reset here for all chip models? */ 945 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 946 udelay(100); 947 #else 948 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 949 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 950 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 951 udelay(2); 952 #endif 953 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 954 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 955 udelay(100); 956 } 957 958 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 959 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 960 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 961 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 962 udelay(100); 963 } 964 965 /* wait until codec ready */ 966 end_time = jiffies + msecs_to_jiffies(750); 967 do { 968 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 969 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 970 break; 971 set_current_state(TASK_UNINTERRUPTIBLE); 972 schedule_timeout(1); 973 } while (time_before(jiffies, end_time)); 974 975 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 976 snd_printk("AC'97 codec is not ready [0x%x]\n", val); 977 978 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 979 VIA_REG_AC97_SECONDARY_VALID | 980 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 981 end_time = jiffies + msecs_to_jiffies(750); 982 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 983 VIA_REG_AC97_SECONDARY_VALID | 984 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 985 do { 986 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 987 chip->ac97_secondary = 1; 988 goto __ac97_ok2; 989 } 990 set_current_state(TASK_INTERRUPTIBLE); 991 schedule_timeout(1); 992 } while (time_before(jiffies, end_time)); 993 /* This is ok, the most of motherboards have only one codec */ 994 995 __ac97_ok2: 996 997 /* route FM trap to IRQ, disable FM trap */ 998 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 999 /* disable all GPI interrupts */ 1000 outl(0, VIAREG(chip, GPI_INTR)); 1001 1002 return 0; 1003 } 1004 1005 #ifdef CONFIG_PM 1006 /* 1007 * power management 1008 */ 1009 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state) 1010 { 1011 via82xx_t *chip = card->pm_private_data; 1012 int i; 1013 1014 for (i = 0; i < 2; i++) 1015 if (chip->pcms[i]) 1016 snd_pcm_suspend_all(chip->pcms[i]); 1017 for (i = 0; i < chip->num_devs; i++) 1018 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1019 synchronize_irq(chip->irq); 1020 snd_ac97_suspend(chip->ac97); 1021 pci_set_power_state(chip->pci, 3); 1022 pci_disable_device(chip->pci); 1023 return 0; 1024 } 1025 1026 static int snd_via82xx_resume(snd_card_t *card) 1027 { 1028 via82xx_t *chip = card->pm_private_data; 1029 int i; 1030 1031 pci_enable_device(chip->pci); 1032 pci_set_power_state(chip->pci, 0); 1033 pci_set_master(chip->pci); 1034 1035 snd_via82xx_chip_init(chip); 1036 1037 snd_ac97_resume(chip->ac97); 1038 1039 for (i = 0; i < chip->num_devs; i++) 1040 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1041 1042 return 0; 1043 } 1044 #endif /* CONFIG_PM */ 1045 1046 static int snd_via82xx_free(via82xx_t *chip) 1047 { 1048 unsigned int i; 1049 1050 if (chip->irq < 0) 1051 goto __end_hw; 1052 /* disable interrupts */ 1053 for (i = 0; i < chip->num_devs; i++) 1054 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1055 synchronize_irq(chip->irq); 1056 __end_hw: 1057 if (chip->irq >= 0) 1058 free_irq(chip->irq, (void *)chip); 1059 pci_release_regions(chip->pci); 1060 pci_disable_device(chip->pci); 1061 kfree(chip); 1062 return 0; 1063 } 1064 1065 static int snd_via82xx_dev_free(snd_device_t *device) 1066 { 1067 via82xx_t *chip = device->device_data; 1068 return snd_via82xx_free(chip); 1069 } 1070 1071 static int __devinit snd_via82xx_create(snd_card_t * card, 1072 struct pci_dev *pci, 1073 int chip_type, 1074 int revision, 1075 unsigned int ac97_clock, 1076 via82xx_t ** r_via) 1077 { 1078 via82xx_t *chip; 1079 int err; 1080 static snd_device_ops_t ops = { 1081 .dev_free = snd_via82xx_dev_free, 1082 }; 1083 1084 if ((err = pci_enable_device(pci)) < 0) 1085 return err; 1086 1087 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 1088 pci_disable_device(pci); 1089 return -ENOMEM; 1090 } 1091 1092 spin_lock_init(&chip->reg_lock); 1093 chip->card = card; 1094 chip->pci = pci; 1095 chip->irq = -1; 1096 1097 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1098 kfree(chip); 1099 pci_disable_device(pci); 1100 return err; 1101 } 1102 chip->port = pci_resource_start(pci, 0); 1103 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ, 1104 card->driver, (void *)chip)) { 1105 snd_printk("unable to grab IRQ %d\n", pci->irq); 1106 snd_via82xx_free(chip); 1107 return -EBUSY; 1108 } 1109 chip->irq = pci->irq; 1110 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1111 chip->ac97_clock = ac97_clock; 1112 synchronize_irq(chip->irq); 1113 1114 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1115 snd_via82xx_free(chip); 1116 return err; 1117 } 1118 1119 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1120 snd_via82xx_free(chip); 1121 return err; 1122 } 1123 1124 /* The 8233 ac97 controller does not implement the master bit 1125 * in the pci command register. IMHO this is a violation of the PCI spec. 1126 * We call pci_set_master here because it does not hurt. */ 1127 pci_set_master(pci); 1128 1129 snd_card_set_dev(card, &pci->dev); 1130 1131 *r_via = chip; 1132 return 0; 1133 } 1134 1135 1136 static int __devinit snd_via82xx_probe(struct pci_dev *pci, 1137 const struct pci_device_id *pci_id) 1138 { 1139 snd_card_t *card; 1140 via82xx_t *chip; 1141 unsigned char revision; 1142 int chip_type = 0, card_type; 1143 unsigned int i; 1144 int err; 1145 1146 card = snd_card_new(index, id, THIS_MODULE, 0); 1147 if (card == NULL) 1148 return -ENOMEM; 1149 1150 card_type = pci_id->driver_data; 1151 pci_read_config_byte(pci, PCI_REVISION_ID, &revision); 1152 switch (card_type) { 1153 case TYPE_CARD_VIA82XX_MODEM: 1154 strcpy(card->driver, "VIA82XX-MODEM"); 1155 sprintf(card->shortname, "VIA 82XX modem"); 1156 break; 1157 default: 1158 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1159 err = -EINVAL; 1160 goto __error; 1161 } 1162 1163 if ((err = snd_via82xx_create(card, pci, chip_type, revision, 1164 ac97_clock, &chip)) < 0) 1165 goto __error; 1166 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1167 goto __error; 1168 1169 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1170 goto __error; 1171 1172 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip); 1173 1174 /* disable interrupts */ 1175 for (i = 0; i < chip->num_devs; i++) 1176 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1177 1178 sprintf(card->longname, "%s at 0x%lx, irq %d", 1179 card->shortname, chip->port, chip->irq); 1180 1181 snd_via82xx_proc_init(chip); 1182 1183 if ((err = snd_card_register(card)) < 0) { 1184 snd_card_free(card); 1185 return err; 1186 } 1187 pci_set_drvdata(pci, card); 1188 return 0; 1189 1190 __error: 1191 snd_card_free(card); 1192 return err; 1193 } 1194 1195 static void __devexit snd_via82xx_remove(struct pci_dev *pci) 1196 { 1197 snd_card_free(pci_get_drvdata(pci)); 1198 pci_set_drvdata(pci, NULL); 1199 } 1200 1201 static struct pci_driver driver = { 1202 .name = "VIA 82xx Modem", 1203 .owner = THIS_MODULE, 1204 .id_table = snd_via82xx_modem_ids, 1205 .probe = snd_via82xx_probe, 1206 .remove = __devexit_p(snd_via82xx_remove), 1207 SND_PCI_PM_CALLBACKS 1208 }; 1209 1210 static int __init alsa_card_via82xx_init(void) 1211 { 1212 return pci_register_driver(&driver); 1213 } 1214 1215 static void __exit alsa_card_via82xx_exit(void) 1216 { 1217 pci_unregister_driver(&driver); 1218 } 1219 1220 module_init(alsa_card_via82xx_init) 1221 module_exit(alsa_card_via82xx_exit) 1222