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/module.h> 41 #include <sound/core.h> 42 #include <sound/pcm.h> 43 #include <sound/pcm_params.h> 44 #include <sound/info.h> 45 #include <sound/ac97_codec.h> 46 #include <sound/initval.h> 47 48 #if 0 49 #define POINTER_DEBUG 50 #endif 51 52 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 53 MODULE_DESCRIPTION("VIA VT82xx modem"); 54 MODULE_LICENSE("GPL"); 55 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); 56 57 static int index = -2; /* Exclude the first card */ 58 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 59 static int ac97_clock = 48000; 60 61 module_param(index, int, 0444); 62 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); 63 module_param(id, charp, 0444); 64 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); 65 module_param(ac97_clock, int, 0444); 66 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 67 68 /* just for backward compatibility */ 69 static bool enable; 70 module_param(enable, bool, 0444); 71 72 73 /* 74 * Direct registers 75 */ 76 77 #define VIAREG(via, x) ((via)->port + VIA_REG_##x) 78 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) 79 80 /* common offsets */ 81 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ 82 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */ 83 #define VIA_REG_STAT_PAUSED 0x40 /* RO */ 84 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ 85 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */ 86 #define VIA_REG_STAT_EOL 0x02 /* RWC */ 87 #define VIA_REG_STAT_FLAG 0x01 /* RWC */ 88 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ 89 #define VIA_REG_CTRL_START 0x80 /* WO */ 90 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ 91 #define VIA_REG_CTRL_AUTOSTART 0x20 92 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */ 93 #define VIA_REG_CTRL_INT_STOP 0x04 94 #define VIA_REG_CTRL_INT_EOL 0x02 95 #define VIA_REG_CTRL_INT_FLAG 0x01 96 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ 97 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) 98 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ 99 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ 100 #define VIA_REG_TYPE_16BIT 0x20 /* RW */ 101 #define VIA_REG_TYPE_STEREO 0x10 /* RW */ 102 #define VIA_REG_TYPE_INT_LLINE 0x00 103 #define VIA_REG_TYPE_INT_LSAMPLE 0x04 104 #define VIA_REG_TYPE_INT_LESSONE 0x08 105 #define VIA_REG_TYPE_INT_MASK 0x0c 106 #define VIA_REG_TYPE_INT_EOL 0x02 107 #define VIA_REG_TYPE_INT_FLAG 0x01 108 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ 109 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ 110 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ 111 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ 112 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ 113 114 #define DEFINE_VIA_REGSET(name,val) \ 115 enum {\ 116 VIA_REG_##name##_STATUS = (val),\ 117 VIA_REG_##name##_CONTROL = (val) + 0x01,\ 118 VIA_REG_##name##_TYPE = (val) + 0x02,\ 119 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ 120 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ 121 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ 122 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ 123 } 124 125 /* modem block */ 126 DEFINE_VIA_REGSET(MO, 0x40); 127 DEFINE_VIA_REGSET(MI, 0x50); 128 129 /* AC'97 */ 130 #define VIA_REG_AC97 0x80 /* dword */ 131 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30) 132 #define VIA_REG_AC97_CODEC_ID_SHIFT 30 133 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 134 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 135 #define VIA_REG_AC97_SECONDARY_VALID (1<<27) 136 #define VIA_REG_AC97_PRIMARY_VALID (1<<25) 137 #define VIA_REG_AC97_BUSY (1<<24) 138 #define VIA_REG_AC97_READ (1<<23) 139 #define VIA_REG_AC97_CMD_SHIFT 16 140 #define VIA_REG_AC97_CMD_MASK 0x7e 141 #define VIA_REG_AC97_DATA_SHIFT 0 142 #define VIA_REG_AC97_DATA_MASK 0xffff 143 144 #define VIA_REG_SGD_SHADOW 0x84 /* dword */ 145 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0) 146 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1) 147 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2) 148 #define VIA_REG_SGD_STAT_PB_EOL (1<<4) 149 #define VIA_REG_SGD_STAT_CP_EOL (1<<5) 150 #define VIA_REG_SGD_STAT_FM_EOL (1<<6) 151 #define VIA_REG_SGD_STAT_PB_STOP (1<<8) 152 #define VIA_REG_SGD_STAT_CP_STOP (1<<9) 153 #define VIA_REG_SGD_STAT_FM_STOP (1<<10) 154 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) 155 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) 156 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) 157 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16) 158 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17) 159 #define VIA_REG_SGD_STAT_MR_EOL (1<<20) 160 #define VIA_REG_SGD_STAT_MW_EOL (1<<21) 161 #define VIA_REG_SGD_STAT_MR_STOP (1<<24) 162 #define VIA_REG_SGD_STAT_MW_STOP (1<<25) 163 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) 164 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) 165 166 #define VIA_REG_GPI_STATUS 0x88 167 #define VIA_REG_GPI_INTR 0x8c 168 169 #define VIA_TBL_BIT_FLAG 0x40000000 170 #define VIA_TBL_BIT_EOL 0x80000000 171 172 /* pci space */ 173 #define VIA_ACLINK_STAT 0x40 174 #define VIA_ACLINK_C11_READY 0x20 175 #define VIA_ACLINK_C10_READY 0x10 176 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ 177 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ 178 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ 179 #define VIA_ACLINK_CTRL 0x41 180 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ 181 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ 182 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ 183 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ 184 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ 185 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ 186 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ 187 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ 188 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ 189 VIA_ACLINK_CTRL_RESET|\ 190 VIA_ACLINK_CTRL_PCM) 191 #define VIA_FUNC_ENABLE 0x42 192 #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ 193 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ 194 #define VIA_FUNC_RX2C_WRITE 0x20 195 #define VIA_FUNC_SB_FIFO_EMPTY 0x10 196 #define VIA_FUNC_ENABLE_GAME 0x08 197 #define VIA_FUNC_ENABLE_FM 0x04 198 #define VIA_FUNC_ENABLE_MIDI 0x02 199 #define VIA_FUNC_ENABLE_SB 0x01 200 #define VIA_PNP_CONTROL 0x43 201 #define VIA_MC97_CTRL 0x44 202 #define VIA_MC97_CTRL_ENABLE 0x80 203 #define VIA_MC97_CTRL_SECONDARY 0x40 204 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ 205 VIA_MC97_CTRL_SECONDARY) 206 207 208 /* 209 * pcm stream 210 */ 211 212 struct snd_via_sg_table { 213 unsigned int offset; 214 unsigned int size; 215 } ; 216 217 #define VIA_TABLE_SIZE 255 218 219 struct viadev { 220 unsigned int reg_offset; 221 unsigned long port; 222 int direction; /* playback = 0, capture = 1 */ 223 struct snd_pcm_substream *substream; 224 int running; 225 unsigned int tbl_entries; /* # descriptors */ 226 struct snd_dma_buffer table; 227 struct snd_via_sg_table *idx_table; 228 /* for recovery from the unexpected pointer */ 229 unsigned int lastpos; 230 unsigned int bufsize; 231 unsigned int bufsize2; 232 }; 233 234 enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 235 236 #define VIA_MAX_MODEM_DEVS 2 237 238 struct via82xx_modem { 239 int irq; 240 241 unsigned long port; 242 243 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 244 245 struct pci_dev *pci; 246 struct snd_card *card; 247 248 unsigned int num_devs; 249 unsigned int playback_devno, capture_devno; 250 struct viadev devs[VIA_MAX_MODEM_DEVS]; 251 252 struct snd_pcm *pcms[2]; 253 254 struct snd_ac97_bus *ac97_bus; 255 struct snd_ac97 *ac97; 256 unsigned int ac97_clock; 257 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 258 259 spinlock_t reg_lock; 260 struct snd_info_entry *proc_entry; 261 }; 262 263 static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_modem_ids) = { 264 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, 265 { 0, } 266 }; 267 268 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 269 270 /* 271 */ 272 273 /* 274 * allocate and initialize the descriptor buffers 275 * periods = number of periods 276 * fragsize = period size in bytes 277 */ 278 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, 279 struct pci_dev *pci, 280 unsigned int periods, unsigned int fragsize) 281 { 282 unsigned int i, idx, ofs, rest; 283 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 284 285 if (dev->table.area == NULL) { 286 /* the start of each lists must be aligned to 8 bytes, 287 * but the kernel pages are much bigger, so we don't care 288 */ 289 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 290 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 291 &dev->table) < 0) 292 return -ENOMEM; 293 } 294 if (! dev->idx_table) { 295 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); 296 if (! dev->idx_table) 297 return -ENOMEM; 298 } 299 300 /* fill the entries */ 301 idx = 0; 302 ofs = 0; 303 for (i = 0; i < periods; i++) { 304 rest = fragsize; 305 /* fill descriptors for a period. 306 * a period can be split to several descriptors if it's 307 * over page boundary. 308 */ 309 do { 310 unsigned int r; 311 unsigned int flag; 312 unsigned int addr; 313 314 if (idx >= VIA_TABLE_SIZE) { 315 snd_printk(KERN_ERR "via82xx: too much table size!\n"); 316 return -EINVAL; 317 } 318 addr = snd_pcm_sgbuf_get_addr(substream, ofs); 319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); 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 /* 332 printk(KERN_DEBUG "via: tbl %d: at %d size %d " 333 "(rest %d)\n", idx, ofs, r, rest); 334 */ 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(struct viadev *dev, struct snd_pcm_substream *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(struct via82xx_modem *chip) 366 { 367 return inl(VIAREG(chip, AC97)); 368 } 369 370 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) 371 { 372 outl(val, VIAREG(chip, AC97)); 373 } 374 375 static int snd_via82xx_codec_ready(struct via82xx_modem *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", 386 secondary, snd_via82xx_codec_xread(chip)); 387 return -EIO; 388 } 389 390 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) 391 { 392 unsigned int timeout = 1000; /* 1ms */ 393 unsigned int val, val1; 394 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : 395 VIA_REG_AC97_SECONDARY_VALID; 396 397 while (timeout-- > 0) { 398 val = snd_via82xx_codec_xread(chip); 399 val1 = val & (VIA_REG_AC97_BUSY | stat); 400 if (val1 == stat) 401 return val & 0xffff; 402 udelay(1); 403 } 404 return -EIO; 405 } 406 407 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) 408 { 409 struct via82xx_modem *chip = ac97->private_data; 410 int err; 411 err = snd_via82xx_codec_ready(chip, ac97->num); 412 /* here we need to wait fairly for long time.. */ 413 msleep(500); 414 } 415 416 static void snd_via82xx_codec_write(struct snd_ac97 *ac97, 417 unsigned short reg, 418 unsigned short val) 419 { 420 struct via82xx_modem *chip = ac97->private_data; 421 unsigned int xval; 422 if(reg == AC97_GPIO_STATUS) { 423 outl(val, VIAREG(chip, GPI_STATUS)); 424 return; 425 } 426 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 427 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 428 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 429 xval |= val << VIA_REG_AC97_DATA_SHIFT; 430 snd_via82xx_codec_xwrite(chip, xval); 431 snd_via82xx_codec_ready(chip, ac97->num); 432 } 433 434 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) 435 { 436 struct via82xx_modem *chip = ac97->private_data; 437 unsigned int xval, val = 0xffff; 438 int again = 0; 439 440 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 441 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 442 xval |= VIA_REG_AC97_READ; 443 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 444 while (1) { 445 if (again++ > 3) { 446 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 447 ac97->num, snd_via82xx_codec_xread(chip)); 448 return 0xffff; 449 } 450 snd_via82xx_codec_xwrite(chip, xval); 451 udelay (20); 452 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { 453 udelay(25); 454 val = snd_via82xx_codec_xread(chip); 455 break; 456 } 457 } 458 return val & 0xffff; 459 } 460 461 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) 462 { 463 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, 464 VIADEV_REG(viadev, OFFSET_CONTROL)); 465 inb(VIADEV_REG(viadev, OFFSET_CONTROL)); 466 udelay(50); 467 /* disable interrupts */ 468 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); 469 /* clear interrupts */ 470 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); 471 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ 472 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); 473 viadev->lastpos = 0; 474 } 475 476 477 /* 478 * Interrupt handler 479 */ 480 481 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) 482 { 483 struct via82xx_modem *chip = dev_id; 484 unsigned int status; 485 unsigned int i; 486 487 status = inl(VIAREG(chip, SGD_SHADOW)); 488 if (! (status & chip->intr_mask)) { 489 return IRQ_NONE; 490 } 491 // _skip_sgd: 492 493 /* check status for each stream */ 494 spin_lock(&chip->reg_lock); 495 for (i = 0; i < chip->num_devs; i++) { 496 struct viadev *viadev = &chip->devs[i]; 497 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); 498 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); 499 if (! c_status) 500 continue; 501 if (viadev->substream && viadev->running) { 502 spin_unlock(&chip->reg_lock); 503 snd_pcm_period_elapsed(viadev->substream); 504 spin_lock(&chip->reg_lock); 505 } 506 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ 507 } 508 spin_unlock(&chip->reg_lock); 509 return IRQ_HANDLED; 510 } 511 512 /* 513 * PCM callbacks 514 */ 515 516 /* 517 * trigger callback 518 */ 519 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 520 { 521 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 522 struct viadev *viadev = substream->runtime->private_data; 523 unsigned char val = 0; 524 525 switch (cmd) { 526 case SNDRV_PCM_TRIGGER_START: 527 case SNDRV_PCM_TRIGGER_SUSPEND: 528 val |= VIA_REG_CTRL_START; 529 viadev->running = 1; 530 break; 531 case SNDRV_PCM_TRIGGER_STOP: 532 val = VIA_REG_CTRL_TERMINATE; 533 viadev->running = 0; 534 break; 535 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 536 val |= VIA_REG_CTRL_PAUSE; 537 viadev->running = 0; 538 break; 539 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 540 viadev->running = 1; 541 break; 542 default: 543 return -EINVAL; 544 } 545 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 546 if (cmd == SNDRV_PCM_TRIGGER_STOP) 547 snd_via82xx_channel_reset(chip, viadev); 548 return 0; 549 } 550 551 /* 552 * pointer callbacks 553 */ 554 555 /* 556 * calculate the linear position at the given sg-buffer index and the rest count 557 */ 558 559 #define check_invalid_pos(viadev,pos) \ 560 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ 561 viadev->lastpos < viadev->bufsize2)) 562 563 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx, 564 unsigned int count) 565 { 566 unsigned int size, res; 567 568 size = viadev->idx_table[idx].size; 569 res = viadev->idx_table[idx].offset + size - count; 570 571 /* check the validity of the calculated position */ 572 if (size < count) { 573 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", 574 (int)size, (int)count); 575 res = viadev->lastpos; 576 } else if (check_invalid_pos(viadev, res)) { 577 #ifdef POINTER_DEBUG 578 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, " 579 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, " 580 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, 581 viadev->bufsize2, viadev->idx_table[idx].offset, 582 viadev->idx_table[idx].size, count); 583 #endif 584 if (count && size < count) { 585 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " 586 "using last valid pointer\n"); 587 res = viadev->lastpos; 588 } else { 589 if (! count) 590 /* bogus count 0 on the DMA boundary? */ 591 res = viadev->idx_table[idx].offset; 592 else 593 /* count register returns full size 594 * when end of buffer is reached 595 */ 596 res = viadev->idx_table[idx].offset + size; 597 if (check_invalid_pos(viadev, res)) { 598 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), " 599 "using last valid pointer\n"); 600 res = viadev->lastpos; 601 } 602 } 603 } 604 viadev->lastpos = res; /* remember the last position */ 605 if (res >= viadev->bufsize) 606 res -= viadev->bufsize; 607 return res; 608 } 609 610 /* 611 * get the current pointer on via686 612 */ 613 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) 614 { 615 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 616 struct viadev *viadev = substream->runtime->private_data; 617 unsigned int idx, ptr, count, res; 618 619 if (snd_BUG_ON(!viadev->tbl_entries)) 620 return 0; 621 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 622 return 0; 623 624 spin_lock(&chip->reg_lock); 625 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 626 /* The via686a does not have the current index register, 627 * so we need to calculate the index from CURR_PTR. 628 */ 629 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 630 if (ptr <= (unsigned int)viadev->table.addr) 631 idx = 0; 632 else /* CURR_PTR holds the address + 8 */ 633 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % 634 viadev->tbl_entries; 635 res = calc_linear_pos(viadev, idx, count); 636 spin_unlock(&chip->reg_lock); 637 638 return bytes_to_frames(substream->runtime, res); 639 } 640 641 /* 642 * hw_params callback: 643 * allocate the buffer and build up the buffer description table 644 */ 645 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, 646 struct snd_pcm_hw_params *hw_params) 647 { 648 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 649 struct viadev *viadev = substream->runtime->private_data; 650 int err; 651 652 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 653 if (err < 0) 654 return err; 655 err = build_via_table(viadev, substream, chip->pci, 656 params_periods(hw_params), 657 params_period_bytes(hw_params)); 658 if (err < 0) 659 return err; 660 661 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 662 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 663 664 return 0; 665 } 666 667 /* 668 * hw_free callback: 669 * clean up the buffer description table and release the buffer 670 */ 671 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) 672 { 673 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 674 struct viadev *viadev = substream->runtime->private_data; 675 676 clean_via_table(viadev, substream, chip->pci); 677 snd_pcm_lib_free_pages(substream); 678 return 0; 679 } 680 681 682 /* 683 * set up the table pointer 684 */ 685 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) 686 { 687 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 688 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 689 udelay(20); 690 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 691 } 692 693 /* 694 * prepare callback for playback and capture 695 */ 696 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) 697 { 698 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 699 struct viadev *viadev = substream->runtime->private_data; 700 701 snd_via82xx_channel_reset(chip, viadev); 702 /* this must be set after channel_reset */ 703 snd_via82xx_set_table_ptr(chip, viadev); 704 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 705 VIADEV_REG(viadev, OFFSET_TYPE)); 706 return 0; 707 } 708 709 /* 710 * pcm hardware definition, identical for both playback and capture 711 */ 712 static struct snd_pcm_hardware snd_via82xx_hw = 713 { 714 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 715 SNDRV_PCM_INFO_BLOCK_TRANSFER | 716 SNDRV_PCM_INFO_MMAP_VALID | 717 /* SNDRV_PCM_INFO_RESUME | */ 718 SNDRV_PCM_INFO_PAUSE), 719 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 720 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 721 .rate_min = 8000, 722 .rate_max = 16000, 723 .channels_min = 1, 724 .channels_max = 1, 725 .buffer_bytes_max = 128 * 1024, 726 .period_bytes_min = 32, 727 .period_bytes_max = 128 * 1024, 728 .periods_min = 2, 729 .periods_max = VIA_TABLE_SIZE / 2, 730 .fifo_size = 0, 731 }; 732 733 734 /* 735 * open callback skeleton 736 */ 737 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, 738 struct snd_pcm_substream *substream) 739 { 740 struct snd_pcm_runtime *runtime = substream->runtime; 741 int err; 742 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 743 static struct snd_pcm_hw_constraint_list hw_constraints_rates = { 744 .count = ARRAY_SIZE(rates), 745 .list = rates, 746 .mask = 0, 747 }; 748 749 runtime->hw = snd_via82xx_hw; 750 751 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 752 &hw_constraints_rates)) < 0) 753 return err; 754 755 /* we may remove following constaint when we modify table entries 756 in interrupt */ 757 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 758 return err; 759 760 runtime->private_data = viadev; 761 viadev->substream = substream; 762 763 return 0; 764 } 765 766 767 /* 768 * open callback for playback 769 */ 770 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) 771 { 772 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 773 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; 774 775 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 776 } 777 778 /* 779 * open callback for capture 780 */ 781 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) 782 { 783 struct via82xx_modem *chip = snd_pcm_substream_chip(substream); 784 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 785 786 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 787 } 788 789 /* 790 * close callback 791 */ 792 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) 793 { 794 struct viadev *viadev = substream->runtime->private_data; 795 796 viadev->substream = NULL; 797 return 0; 798 } 799 800 801 /* via686 playback callbacks */ 802 static struct snd_pcm_ops snd_via686_playback_ops = { 803 .open = snd_via82xx_playback_open, 804 .close = snd_via82xx_pcm_close, 805 .ioctl = snd_pcm_lib_ioctl, 806 .hw_params = snd_via82xx_hw_params, 807 .hw_free = snd_via82xx_hw_free, 808 .prepare = snd_via82xx_pcm_prepare, 809 .trigger = snd_via82xx_pcm_trigger, 810 .pointer = snd_via686_pcm_pointer, 811 .page = snd_pcm_sgbuf_ops_page, 812 }; 813 814 /* via686 capture callbacks */ 815 static struct snd_pcm_ops snd_via686_capture_ops = { 816 .open = snd_via82xx_capture_open, 817 .close = snd_via82xx_pcm_close, 818 .ioctl = snd_pcm_lib_ioctl, 819 .hw_params = snd_via82xx_hw_params, 820 .hw_free = snd_via82xx_hw_free, 821 .prepare = snd_via82xx_pcm_prepare, 822 .trigger = snd_via82xx_pcm_trigger, 823 .pointer = snd_via686_pcm_pointer, 824 .page = snd_pcm_sgbuf_ops_page, 825 }; 826 827 828 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, 829 int direction) 830 { 831 chip->devs[idx].reg_offset = reg_offset; 832 chip->devs[idx].direction = direction; 833 chip->devs[idx].port = chip->port + reg_offset; 834 } 835 836 /* 837 * create a pcm instance for via686a/b 838 */ 839 static int snd_via686_pcm_new(struct via82xx_modem *chip) 840 { 841 struct snd_pcm *pcm; 842 int err; 843 844 chip->playback_devno = 0; 845 chip->capture_devno = 1; 846 chip->num_devs = 2; 847 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 848 849 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 850 if (err < 0) 851 return err; 852 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 853 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 854 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 855 pcm->private_data = chip; 856 strcpy(pcm->name, chip->card->shortname); 857 chip->pcms[0] = pcm; 858 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 859 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 860 861 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 862 snd_dma_pci_data(chip->pci), 863 64*1024, 128*1024)) < 0) 864 return err; 865 866 return 0; 867 } 868 869 870 /* 871 * Mixer part 872 */ 873 874 875 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) 876 { 877 struct via82xx_modem *chip = bus->private_data; 878 chip->ac97_bus = NULL; 879 } 880 881 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) 882 { 883 struct via82xx_modem *chip = ac97->private_data; 884 chip->ac97 = NULL; 885 } 886 887 888 static int snd_via82xx_mixer_new(struct via82xx_modem *chip) 889 { 890 struct snd_ac97_template ac97; 891 int err; 892 static struct snd_ac97_bus_ops ops = { 893 .write = snd_via82xx_codec_write, 894 .read = snd_via82xx_codec_read, 895 .wait = snd_via82xx_codec_wait, 896 }; 897 898 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 899 return err; 900 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 901 chip->ac97_bus->clock = chip->ac97_clock; 902 903 memset(&ac97, 0, sizeof(ac97)); 904 ac97.private_data = chip; 905 ac97.private_free = snd_via82xx_mixer_free_ac97; 906 ac97.pci = chip->pci; 907 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 908 ac97.num = chip->ac97_secondary; 909 910 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 911 return err; 912 913 return 0; 914 } 915 916 917 /* 918 * proc interface 919 */ 920 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 921 { 922 struct via82xx_modem *chip = entry->private_data; 923 int i; 924 925 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 926 for (i = 0; i < 0xa0; i += 4) { 927 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 928 } 929 } 930 931 static void snd_via82xx_proc_init(struct via82xx_modem *chip) 932 { 933 struct snd_info_entry *entry; 934 935 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 936 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); 937 } 938 939 /* 940 * 941 */ 942 943 static int snd_via82xx_chip_init(struct via82xx_modem *chip) 944 { 945 unsigned int val; 946 unsigned long end_time; 947 unsigned char pval; 948 949 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 950 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 951 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 952 udelay(100); 953 } 954 955 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 956 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 957 /* deassert ACLink reset, force SYNC */ 958 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 959 VIA_ACLINK_CTRL_ENABLE | 960 VIA_ACLINK_CTRL_RESET | 961 VIA_ACLINK_CTRL_SYNC); 962 udelay(100); 963 #if 1 /* FIXME: should we do full reset here for all chip models? */ 964 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 965 udelay(100); 966 #else 967 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 968 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 969 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 970 udelay(2); 971 #endif 972 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 973 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 974 udelay(100); 975 } 976 977 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 978 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 979 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 980 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 981 udelay(100); 982 } 983 984 /* wait until codec ready */ 985 end_time = jiffies + msecs_to_jiffies(750); 986 do { 987 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 988 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 989 break; 990 schedule_timeout_uninterruptible(1); 991 } while (time_before(jiffies, end_time)); 992 993 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 994 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); 995 996 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 end_time = jiffies + msecs_to_jiffies(750); 1000 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 1001 VIA_REG_AC97_SECONDARY_VALID | 1002 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 1003 do { 1004 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 1005 chip->ac97_secondary = 1; 1006 goto __ac97_ok2; 1007 } 1008 schedule_timeout_uninterruptible(1); 1009 } while (time_before(jiffies, end_time)); 1010 /* This is ok, the most of motherboards have only one codec */ 1011 1012 __ac97_ok2: 1013 1014 /* route FM trap to IRQ, disable FM trap */ 1015 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1016 /* disable all GPI interrupts */ 1017 outl(0, VIAREG(chip, GPI_INTR)); 1018 1019 return 0; 1020 } 1021 1022 #ifdef CONFIG_PM_SLEEP 1023 /* 1024 * power management 1025 */ 1026 static int snd_via82xx_suspend(struct device *dev) 1027 { 1028 struct pci_dev *pci = to_pci_dev(dev); 1029 struct snd_card *card = dev_get_drvdata(dev); 1030 struct via82xx_modem *chip = card->private_data; 1031 int i; 1032 1033 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1034 for (i = 0; i < 2; i++) 1035 snd_pcm_suspend_all(chip->pcms[i]); 1036 for (i = 0; i < chip->num_devs; i++) 1037 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1038 synchronize_irq(chip->irq); 1039 snd_ac97_suspend(chip->ac97); 1040 1041 pci_disable_device(pci); 1042 pci_save_state(pci); 1043 pci_set_power_state(pci, PCI_D3hot); 1044 return 0; 1045 } 1046 1047 static int snd_via82xx_resume(struct device *dev) 1048 { 1049 struct pci_dev *pci = to_pci_dev(dev); 1050 struct snd_card *card = dev_get_drvdata(dev); 1051 struct via82xx_modem *chip = card->private_data; 1052 int i; 1053 1054 pci_set_power_state(pci, PCI_D0); 1055 pci_restore_state(pci); 1056 if (pci_enable_device(pci) < 0) { 1057 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, " 1058 "disabling device\n"); 1059 snd_card_disconnect(card); 1060 return -EIO; 1061 } 1062 pci_set_master(pci); 1063 1064 snd_via82xx_chip_init(chip); 1065 1066 snd_ac97_resume(chip->ac97); 1067 1068 for (i = 0; i < chip->num_devs; i++) 1069 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1070 1071 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1072 return 0; 1073 } 1074 1075 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); 1076 #define SND_VIA82XX_PM_OPS &snd_via82xx_pm 1077 #else 1078 #define SND_VIA82XX_PM_OPS NULL 1079 #endif /* CONFIG_PM_SLEEP */ 1080 1081 static int snd_via82xx_free(struct via82xx_modem *chip) 1082 { 1083 unsigned int i; 1084 1085 if (chip->irq < 0) 1086 goto __end_hw; 1087 /* disable interrupts */ 1088 for (i = 0; i < chip->num_devs; i++) 1089 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1090 1091 __end_hw: 1092 if (chip->irq >= 0) 1093 free_irq(chip->irq, chip); 1094 pci_release_regions(chip->pci); 1095 pci_disable_device(chip->pci); 1096 kfree(chip); 1097 return 0; 1098 } 1099 1100 static int snd_via82xx_dev_free(struct snd_device *device) 1101 { 1102 struct via82xx_modem *chip = device->device_data; 1103 return snd_via82xx_free(chip); 1104 } 1105 1106 static int snd_via82xx_create(struct snd_card *card, 1107 struct pci_dev *pci, 1108 int chip_type, 1109 int revision, 1110 unsigned int ac97_clock, 1111 struct via82xx_modem **r_via) 1112 { 1113 struct via82xx_modem *chip; 1114 int err; 1115 static struct snd_device_ops ops = { 1116 .dev_free = snd_via82xx_dev_free, 1117 }; 1118 1119 if ((err = pci_enable_device(pci)) < 0) 1120 return err; 1121 1122 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { 1123 pci_disable_device(pci); 1124 return -ENOMEM; 1125 } 1126 1127 spin_lock_init(&chip->reg_lock); 1128 chip->card = card; 1129 chip->pci = pci; 1130 chip->irq = -1; 1131 1132 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1133 kfree(chip); 1134 pci_disable_device(pci); 1135 return err; 1136 } 1137 chip->port = pci_resource_start(pci, 0); 1138 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, 1139 KBUILD_MODNAME, chip)) { 1140 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); 1141 snd_via82xx_free(chip); 1142 return -EBUSY; 1143 } 1144 chip->irq = pci->irq; 1145 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1146 chip->ac97_clock = ac97_clock; 1147 synchronize_irq(chip->irq); 1148 1149 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1150 snd_via82xx_free(chip); 1151 return err; 1152 } 1153 1154 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1155 snd_via82xx_free(chip); 1156 return err; 1157 } 1158 1159 /* The 8233 ac97 controller does not implement the master bit 1160 * in the pci command register. IMHO this is a violation of the PCI spec. 1161 * We call pci_set_master here because it does not hurt. */ 1162 pci_set_master(pci); 1163 1164 snd_card_set_dev(card, &pci->dev); 1165 1166 *r_via = chip; 1167 return 0; 1168 } 1169 1170 1171 static int snd_via82xx_probe(struct pci_dev *pci, 1172 const struct pci_device_id *pci_id) 1173 { 1174 struct snd_card *card; 1175 struct via82xx_modem *chip; 1176 int chip_type = 0, card_type; 1177 unsigned int i; 1178 int err; 1179 1180 err = snd_card_create(index, id, THIS_MODULE, 0, &card); 1181 if (err < 0) 1182 return err; 1183 1184 card_type = pci_id->driver_data; 1185 switch (card_type) { 1186 case TYPE_CARD_VIA82XX_MODEM: 1187 strcpy(card->driver, "VIA82XX-MODEM"); 1188 sprintf(card->shortname, "VIA 82XX modem"); 1189 break; 1190 default: 1191 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1192 err = -EINVAL; 1193 goto __error; 1194 } 1195 1196 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, 1197 ac97_clock, &chip)) < 0) 1198 goto __error; 1199 card->private_data = chip; 1200 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1201 goto __error; 1202 1203 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1204 goto __error; 1205 1206 /* disable interrupts */ 1207 for (i = 0; i < chip->num_devs; i++) 1208 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1209 1210 sprintf(card->longname, "%s at 0x%lx, irq %d", 1211 card->shortname, chip->port, chip->irq); 1212 1213 snd_via82xx_proc_init(chip); 1214 1215 if ((err = snd_card_register(card)) < 0) { 1216 snd_card_free(card); 1217 return err; 1218 } 1219 pci_set_drvdata(pci, card); 1220 return 0; 1221 1222 __error: 1223 snd_card_free(card); 1224 return err; 1225 } 1226 1227 static void snd_via82xx_remove(struct pci_dev *pci) 1228 { 1229 snd_card_free(pci_get_drvdata(pci)); 1230 } 1231 1232 static struct pci_driver via82xx_modem_driver = { 1233 .name = KBUILD_MODNAME, 1234 .id_table = snd_via82xx_modem_ids, 1235 .probe = snd_via82xx_probe, 1236 .remove = snd_via82xx_remove, 1237 .driver = { 1238 .pm = SND_VIA82XX_PM_OPS, 1239 }, 1240 }; 1241 1242 module_pci_driver(via82xx_modem_driver); 1243