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@smlink.com> 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[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */ 59 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 60 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ 61 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000}; 62 63 module_param_array(index, int, NULL, 0444); 64 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); 65 module_param_array(id, charp, NULL, 0444); 66 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); 67 module_param_array(enable, bool, NULL, 0444); 68 MODULE_PARM_DESC(enable, "Enable modem part of VIA 82xx bridge."); 69 module_param_array(ac97_clock, int, NULL, 0444); 70 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 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 typedef struct _snd_via82xx_modem via82xx_t; 209 typedef struct via_dev viadev_t; 210 211 /* 212 * pcm stream 213 */ 214 215 struct snd_via_sg_table { 216 unsigned int offset; 217 unsigned int size; 218 } ; 219 220 #define VIA_TABLE_SIZE 255 221 222 struct via_dev { 223 unsigned int reg_offset; 224 unsigned long port; 225 int direction; /* playback = 0, capture = 1 */ 226 snd_pcm_substream_t *substream; 227 int running; 228 unsigned int tbl_entries; /* # descriptors */ 229 struct snd_dma_buffer table; 230 struct snd_via_sg_table *idx_table; 231 /* for recovery from the unexpected pointer */ 232 unsigned int lastpos; 233 unsigned int bufsize; 234 unsigned int bufsize2; 235 }; 236 237 enum { TYPE_CARD_VIA82XX_MODEM = 1 }; 238 239 #define VIA_MAX_MODEM_DEVS 2 240 241 struct _snd_via82xx_modem { 242 int irq; 243 244 unsigned long port; 245 246 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ 247 248 struct pci_dev *pci; 249 snd_card_t *card; 250 251 unsigned int num_devs; 252 unsigned int playback_devno, capture_devno; 253 viadev_t devs[VIA_MAX_MODEM_DEVS]; 254 255 snd_pcm_t *pcms[2]; 256 257 ac97_bus_t *ac97_bus; 258 ac97_t *ac97; 259 unsigned int ac97_clock; 260 unsigned int ac97_secondary; /* secondary AC'97 codec is present */ 261 262 spinlock_t reg_lock; 263 snd_info_entry_t *proc_entry; 264 }; 265 266 static struct pci_device_id snd_via82xx_modem_ids[] = { 267 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, }, 268 { 0, } 269 }; 270 271 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); 272 273 /* 274 */ 275 276 /* 277 * allocate and initialize the descriptor buffers 278 * periods = number of periods 279 * fragsize = period size in bytes 280 */ 281 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream, 282 struct pci_dev *pci, 283 unsigned int periods, unsigned int fragsize) 284 { 285 unsigned int i, idx, ofs, rest; 286 via82xx_t *chip = snd_pcm_substream_chip(substream); 287 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); 288 289 if (dev->table.area == NULL) { 290 /* the start of each lists must be aligned to 8 bytes, 291 * but the kernel pages are much bigger, so we don't care 292 */ 293 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 294 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), 295 &dev->table) < 0) 296 return -ENOMEM; 297 } 298 if (! dev->idx_table) { 299 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); 300 if (! dev->idx_table) 301 return -ENOMEM; 302 } 303 304 /* fill the entries */ 305 idx = 0; 306 ofs = 0; 307 for (i = 0; i < periods; i++) { 308 rest = fragsize; 309 /* fill descriptors for a period. 310 * a period can be split to several descriptors if it's 311 * over page boundary. 312 */ 313 do { 314 unsigned int r; 315 unsigned int flag; 316 317 if (idx >= VIA_TABLE_SIZE) { 318 snd_printk(KERN_ERR "via82xx: too much table size!\n"); 319 return -EINVAL; 320 } 321 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); 322 r = PAGE_SIZE - (ofs % PAGE_SIZE); 323 if (rest < r) 324 r = rest; 325 rest -= r; 326 if (! rest) { 327 if (i == periods - 1) 328 flag = VIA_TBL_BIT_EOL; /* buffer boundary */ 329 else 330 flag = VIA_TBL_BIT_FLAG; /* period boundary */ 331 } else 332 flag = 0; /* period continues to the next */ 333 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); 334 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); 335 dev->idx_table[idx].offset = ofs; 336 dev->idx_table[idx].size = r; 337 ofs += r; 338 idx++; 339 } while (rest > 0); 340 } 341 dev->tbl_entries = idx; 342 dev->bufsize = periods * fragsize; 343 dev->bufsize2 = dev->bufsize / 2; 344 return 0; 345 } 346 347 348 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream, 349 struct pci_dev *pci) 350 { 351 if (dev->table.area) { 352 snd_dma_free_pages(&dev->table); 353 dev->table.area = NULL; 354 } 355 if (dev->idx_table) { 356 kfree(dev->idx_table); 357 dev->idx_table = NULL; 358 } 359 return 0; 360 } 361 362 /* 363 * Basic I/O 364 */ 365 366 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip) 367 { 368 return inl(VIAREG(chip, AC97)); 369 } 370 371 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val) 372 { 373 outl(val, VIAREG(chip, AC97)); 374 } 375 376 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary) 377 { 378 unsigned int timeout = 1000; /* 1ms */ 379 unsigned int val; 380 381 while (timeout-- > 0) { 382 udelay(1); 383 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) 384 return val & 0xffff; 385 } 386 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip)); 387 return -EIO; 388 } 389 390 static int snd_via82xx_codec_valid(via82xx_t *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(ac97_t *ac97) 408 { 409 via82xx_t *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 set_current_state(TASK_UNINTERRUPTIBLE); 414 schedule_timeout(HZ/2); 415 } 416 417 static void snd_via82xx_codec_write(ac97_t *ac97, 418 unsigned short reg, 419 unsigned short val) 420 { 421 via82xx_t *chip = ac97->private_data; 422 unsigned int xval; 423 424 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 425 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 426 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 427 xval |= val << VIA_REG_AC97_DATA_SHIFT; 428 snd_via82xx_codec_xwrite(chip, xval); 429 snd_via82xx_codec_ready(chip, ac97->num); 430 } 431 432 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg) 433 { 434 via82xx_t *chip = ac97->private_data; 435 unsigned int xval, val = 0xffff; 436 int again = 0; 437 438 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 439 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 440 xval |= VIA_REG_AC97_READ; 441 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 442 while (1) { 443 if (again++ > 3) { 444 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 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(via82xx_t *chip, viadev_t *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, struct pt_regs *regs) 479 { 480 via82xx_t *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 viadev_t *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(snd_pcm_substream_t * substream, int cmd) 517 { 518 via82xx_t *chip = snd_pcm_substream_chip(substream); 519 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 520 unsigned char val = 0; 521 522 switch (cmd) { 523 case SNDRV_PCM_TRIGGER_START: 524 val |= VIA_REG_CTRL_START; 525 viadev->running = 1; 526 break; 527 case SNDRV_PCM_TRIGGER_STOP: 528 val = VIA_REG_CTRL_TERMINATE; 529 viadev->running = 0; 530 break; 531 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 532 val |= VIA_REG_CTRL_PAUSE; 533 viadev->running = 0; 534 break; 535 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 536 viadev->running = 1; 537 break; 538 default: 539 return -EINVAL; 540 } 541 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 542 if (cmd == SNDRV_PCM_TRIGGER_STOP) 543 snd_via82xx_channel_reset(chip, viadev); 544 return 0; 545 } 546 547 static int snd_via82xx_modem_pcm_trigger(snd_pcm_substream_t * substream, int cmd) 548 { 549 via82xx_t *chip = snd_pcm_substream_chip(substream); 550 unsigned int val = 0; 551 switch (cmd) { 552 case SNDRV_PCM_TRIGGER_START: 553 val = snd_ac97_read(chip->ac97, AC97_GPIO_STATUS); 554 outl(val|AC97_GPIO_LINE1_OH, VIAREG(chip, GPI_STATUS)); 555 break; 556 case SNDRV_PCM_TRIGGER_STOP: 557 val = snd_ac97_read(chip->ac97, AC97_GPIO_STATUS); 558 outl(val&~AC97_GPIO_LINE1_OH, VIAREG(chip, GPI_STATUS)); 559 break; 560 default: 561 break; 562 } 563 return snd_via82xx_pcm_trigger(substream, cmd); 564 } 565 566 /* 567 * pointer callbacks 568 */ 569 570 /* 571 * calculate the linear position at the given sg-buffer index and the rest count 572 */ 573 574 #define check_invalid_pos(viadev,pos) \ 575 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2)) 576 577 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count) 578 { 579 unsigned int size, res; 580 581 size = viadev->idx_table[idx].size; 582 res = viadev->idx_table[idx].offset + size - count; 583 584 /* check the validity of the calculated position */ 585 if (size < count) { 586 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count); 587 res = viadev->lastpos; 588 } else if (check_invalid_pos(viadev, res)) { 589 #ifdef POINTER_DEBUG 590 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); 591 #endif 592 if (count && size < count) { 593 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n"); 594 res = viadev->lastpos; 595 } else { 596 if (! count) 597 /* bogus count 0 on the DMA boundary? */ 598 res = viadev->idx_table[idx].offset; 599 else 600 /* count register returns full size when end of buffer is reached */ 601 res = viadev->idx_table[idx].offset + size; 602 if (check_invalid_pos(viadev, res)) { 603 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n"); 604 res = viadev->lastpos; 605 } 606 } 607 } 608 viadev->lastpos = res; /* remember the last position */ 609 if (res >= viadev->bufsize) 610 res -= viadev->bufsize; 611 return res; 612 } 613 614 /* 615 * get the current pointer on via686 616 */ 617 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream) 618 { 619 via82xx_t *chip = snd_pcm_substream_chip(substream); 620 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 621 unsigned int idx, ptr, count, res; 622 623 snd_assert(viadev->tbl_entries, return 0); 624 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 625 return 0; 626 627 spin_lock(&chip->reg_lock); 628 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 629 /* The via686a does not have the current index register, 630 * so we need to calculate the index from CURR_PTR. 631 */ 632 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 633 if (ptr <= (unsigned int)viadev->table.addr) 634 idx = 0; 635 else /* CURR_PTR holds the address + 8 */ 636 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries; 637 res = calc_linear_pos(viadev, idx, count); 638 spin_unlock(&chip->reg_lock); 639 640 return bytes_to_frames(substream->runtime, res); 641 } 642 643 /* 644 * hw_params callback: 645 * allocate the buffer and build up the buffer description table 646 */ 647 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream, 648 snd_pcm_hw_params_t * hw_params) 649 { 650 via82xx_t *chip = snd_pcm_substream_chip(substream); 651 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 652 int err; 653 654 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 655 if (err < 0) 656 return err; 657 err = build_via_table(viadev, substream, chip->pci, 658 params_periods(hw_params), 659 params_period_bytes(hw_params)); 660 if (err < 0) 661 return err; 662 663 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 664 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 665 666 return 0; 667 } 668 669 /* 670 * hw_free callback: 671 * clean up the buffer description table and release the buffer 672 */ 673 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream) 674 { 675 via82xx_t *chip = snd_pcm_substream_chip(substream); 676 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 677 678 clean_via_table(viadev, substream, chip->pci); 679 snd_pcm_lib_free_pages(substream); 680 return 0; 681 } 682 683 684 /* 685 * set up the table pointer 686 */ 687 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev) 688 { 689 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 690 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 691 udelay(20); 692 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 693 } 694 695 /* 696 * prepare callback for playback and capture 697 */ 698 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream) 699 { 700 via82xx_t *chip = snd_pcm_substream_chip(substream); 701 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 702 703 snd_via82xx_channel_reset(chip, viadev); 704 /* this must be set after channel_reset */ 705 snd_via82xx_set_table_ptr(chip, viadev); 706 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 707 VIADEV_REG(viadev, OFFSET_TYPE)); 708 return 0; 709 } 710 711 /* 712 * pcm hardware definition, identical for both playback and capture 713 */ 714 static snd_pcm_hardware_t snd_via82xx_hw = 715 { 716 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 717 SNDRV_PCM_INFO_BLOCK_TRANSFER | 718 SNDRV_PCM_INFO_MMAP_VALID | 719 SNDRV_PCM_INFO_RESUME | 720 SNDRV_PCM_INFO_PAUSE), 721 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 722 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 723 .rate_min = 8000, 724 .rate_max = 16000, 725 .channels_min = 1, 726 .channels_max = 1, 727 .buffer_bytes_max = 128 * 1024, 728 .period_bytes_min = 32, 729 .period_bytes_max = 128 * 1024, 730 .periods_min = 2, 731 .periods_max = VIA_TABLE_SIZE / 2, 732 .fifo_size = 0, 733 }; 734 735 736 /* 737 * open callback skeleton 738 */ 739 static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream) 740 { 741 snd_pcm_runtime_t *runtime = substream->runtime; 742 int err; 743 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 744 static snd_pcm_hw_constraint_list_t hw_constraints_rates = { 745 .count = ARRAY_SIZE(rates), 746 .list = rates, 747 .mask = 0, 748 }; 749 750 runtime->hw = snd_via82xx_hw; 751 752 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &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(snd_pcm_substream_t * substream) 771 { 772 via82xx_t *chip = snd_pcm_substream_chip(substream); 773 viadev_t *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(snd_pcm_substream_t * substream) 782 { 783 via82xx_t *chip = snd_pcm_substream_chip(substream); 784 viadev_t *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(snd_pcm_substream_t * substream) 793 { 794 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 795 796 viadev->substream = NULL; 797 return 0; 798 } 799 800 801 /* via686 playback callbacks */ 802 static snd_pcm_ops_t 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_modem_pcm_trigger, 810 .pointer = snd_via686_pcm_pointer, 811 .page = snd_pcm_sgbuf_ops_page, 812 }; 813 814 /* via686 capture callbacks */ 815 static snd_pcm_ops_t 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_modem_pcm_trigger, 823 .pointer = snd_via686_pcm_pointer, 824 .page = snd_pcm_sgbuf_ops_page, 825 }; 826 827 828 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction) 829 { 830 chip->devs[idx].reg_offset = reg_offset; 831 chip->devs[idx].direction = direction; 832 chip->devs[idx].port = chip->port + reg_offset; 833 } 834 835 /* 836 * create a pcm instance for via686a/b 837 */ 838 static int __devinit snd_via686_pcm_new(via82xx_t *chip) 839 { 840 snd_pcm_t *pcm; 841 int err; 842 843 chip->playback_devno = 0; 844 chip->capture_devno = 1; 845 chip->num_devs = 2; 846 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 847 848 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 849 if (err < 0) 850 return err; 851 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 852 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 853 pcm->private_data = chip; 854 strcpy(pcm->name, chip->card->shortname); 855 chip->pcms[0] = pcm; 856 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); 857 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); 858 859 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, 860 snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0) 861 return err; 862 863 return 0; 864 } 865 866 867 /* 868 * Mixer part 869 */ 870 871 872 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus) 873 { 874 via82xx_t *chip = bus->private_data; 875 chip->ac97_bus = NULL; 876 } 877 878 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97) 879 { 880 via82xx_t *chip = ac97->private_data; 881 chip->ac97 = NULL; 882 } 883 884 885 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip) 886 { 887 ac97_template_t ac97; 888 int err; 889 static ac97_bus_ops_t ops = { 890 .write = snd_via82xx_codec_write, 891 .read = snd_via82xx_codec_read, 892 .wait = snd_via82xx_codec_wait, 893 }; 894 895 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) 896 return err; 897 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; 898 chip->ac97_bus->clock = chip->ac97_clock; 899 chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA; 900 901 memset(&ac97, 0, sizeof(ac97)); 902 ac97.private_data = chip; 903 ac97.private_free = snd_via82xx_mixer_free_ac97; 904 ac97.pci = chip->pci; 905 ac97.scaps = AC97_SCAP_SKIP_AUDIO; 906 ac97.num = chip->ac97_secondary; 907 908 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 909 return err; 910 911 return 0; 912 } 913 914 915 /* 916 * proc interface 917 */ 918 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) 919 { 920 via82xx_t *chip = entry->private_data; 921 int i; 922 923 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 924 for (i = 0; i < 0xa0; i += 4) { 925 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 926 } 927 } 928 929 static void __devinit snd_via82xx_proc_init(via82xx_t *chip) 930 { 931 snd_info_entry_t *entry; 932 933 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 934 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read); 935 } 936 937 /* 938 * 939 */ 940 941 static int snd_via82xx_chip_init(via82xx_t *chip) 942 { 943 unsigned int val; 944 int max_count; 945 unsigned char pval; 946 947 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 948 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 949 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 950 udelay(100); 951 } 952 953 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 954 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 955 /* deassert ACLink reset, force SYNC */ 956 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 957 VIA_ACLINK_CTRL_ENABLE | 958 VIA_ACLINK_CTRL_RESET | 959 VIA_ACLINK_CTRL_SYNC); 960 udelay(100); 961 #if 1 /* FIXME: should we do full reset here for all chip models? */ 962 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 963 udelay(100); 964 #else 965 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 966 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 967 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 968 udelay(2); 969 #endif 970 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 971 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 972 udelay(100); 973 } 974 975 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 976 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 977 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 978 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 979 udelay(100); 980 } 981 982 /* wait until codec ready */ 983 max_count = ((3 * HZ) / 4) + 1; 984 do { 985 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 986 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 987 break; 988 set_current_state(TASK_UNINTERRUPTIBLE); 989 schedule_timeout(1); 990 } while (--max_count > 0); 991 992 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 993 snd_printk("AC'97 codec is not ready [0x%x]\n", val); 994 995 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 996 VIA_REG_AC97_SECONDARY_VALID | 997 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 998 max_count = ((3 * HZ) / 4) + 1; 999 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 1000 VIA_REG_AC97_SECONDARY_VALID | 1001 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 1002 do { 1003 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 1004 chip->ac97_secondary = 1; 1005 goto __ac97_ok2; 1006 } 1007 set_current_state(TASK_INTERRUPTIBLE); 1008 schedule_timeout(1); 1009 } while (--max_count > 0); 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 1023 /* 1024 * power management 1025 */ 1026 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state) 1027 { 1028 via82xx_t *chip = card->pm_private_data; 1029 int i; 1030 1031 for (i = 0; i < 2; i++) 1032 if (chip->pcms[i]) 1033 snd_pcm_suspend_all(chip->pcms[i]); 1034 for (i = 0; i < chip->num_devs; i++) 1035 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1036 synchronize_irq(chip->irq); 1037 snd_ac97_suspend(chip->ac97); 1038 pci_set_power_state(chip->pci, 3); 1039 pci_disable_device(chip->pci); 1040 return 0; 1041 } 1042 1043 static int snd_via82xx_resume(snd_card_t *card) 1044 { 1045 via82xx_t *chip = card->pm_private_data; 1046 int i; 1047 1048 pci_enable_device(chip->pci); 1049 pci_set_power_state(chip->pci, 0); 1050 pci_set_master(chip->pci); 1051 1052 snd_via82xx_chip_init(chip); 1053 1054 snd_ac97_resume(chip->ac97); 1055 1056 for (i = 0; i < chip->num_devs; i++) 1057 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1058 1059 return 0; 1060 } 1061 #endif /* CONFIG_PM */ 1062 1063 static int snd_via82xx_free(via82xx_t *chip) 1064 { 1065 unsigned int i; 1066 1067 if (chip->irq < 0) 1068 goto __end_hw; 1069 /* disable interrupts */ 1070 for (i = 0; i < chip->num_devs; i++) 1071 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1072 synchronize_irq(chip->irq); 1073 __end_hw: 1074 if (chip->irq >= 0) 1075 free_irq(chip->irq, (void *)chip); 1076 pci_release_regions(chip->pci); 1077 pci_disable_device(chip->pci); 1078 kfree(chip); 1079 return 0; 1080 } 1081 1082 static int snd_via82xx_dev_free(snd_device_t *device) 1083 { 1084 via82xx_t *chip = device->device_data; 1085 return snd_via82xx_free(chip); 1086 } 1087 1088 static int __devinit snd_via82xx_create(snd_card_t * card, 1089 struct pci_dev *pci, 1090 int chip_type, 1091 int revision, 1092 unsigned int ac97_clock, 1093 via82xx_t ** r_via) 1094 { 1095 via82xx_t *chip; 1096 int err; 1097 static snd_device_ops_t ops = { 1098 .dev_free = snd_via82xx_dev_free, 1099 }; 1100 1101 if ((err = pci_enable_device(pci)) < 0) 1102 return err; 1103 1104 if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) { 1105 pci_disable_device(pci); 1106 return -ENOMEM; 1107 } 1108 1109 spin_lock_init(&chip->reg_lock); 1110 chip->card = card; 1111 chip->pci = pci; 1112 chip->irq = -1; 1113 1114 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1115 kfree(chip); 1116 pci_disable_device(pci); 1117 return err; 1118 } 1119 chip->port = pci_resource_start(pci, 0); 1120 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ, 1121 card->driver, (void *)chip)) { 1122 snd_printk("unable to grab IRQ %d\n", pci->irq); 1123 snd_via82xx_free(chip); 1124 return -EBUSY; 1125 } 1126 chip->irq = pci->irq; 1127 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1128 chip->ac97_clock = ac97_clock; 1129 synchronize_irq(chip->irq); 1130 1131 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1132 snd_via82xx_free(chip); 1133 return err; 1134 } 1135 1136 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1137 snd_via82xx_free(chip); 1138 return err; 1139 } 1140 1141 /* The 8233 ac97 controller does not implement the master bit 1142 * in the pci command register. IMHO this is a violation of the PCI spec. 1143 * We call pci_set_master here because it does not hurt. */ 1144 pci_set_master(pci); 1145 1146 snd_card_set_dev(card, &pci->dev); 1147 1148 *r_via = chip; 1149 return 0; 1150 } 1151 1152 1153 static int __devinit snd_via82xx_probe(struct pci_dev *pci, 1154 const struct pci_device_id *pci_id) 1155 { 1156 static int dev; 1157 snd_card_t *card; 1158 via82xx_t *chip; 1159 unsigned char revision; 1160 int chip_type = 0, card_type; 1161 unsigned int i; 1162 int err; 1163 1164 if (dev >= SNDRV_CARDS) 1165 return -ENODEV; 1166 if (!enable[dev]) { 1167 dev++; 1168 return -ENOENT; 1169 } 1170 1171 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 1172 if (card == NULL) 1173 return -ENOMEM; 1174 1175 card_type = pci_id->driver_data; 1176 pci_read_config_byte(pci, PCI_REVISION_ID, &revision); 1177 switch (card_type) { 1178 case TYPE_CARD_VIA82XX_MODEM: 1179 strcpy(card->driver, "VIA82XX-MODEM"); 1180 sprintf(card->shortname, "VIA 82XX modem"); 1181 break; 1182 default: 1183 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1184 err = -EINVAL; 1185 goto __error; 1186 } 1187 1188 if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0) 1189 goto __error; 1190 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1191 goto __error; 1192 1193 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1194 goto __error; 1195 1196 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip); 1197 1198 /* disable interrupts */ 1199 for (i = 0; i < chip->num_devs; i++) 1200 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1201 1202 sprintf(card->longname, "%s at 0x%lx, irq %d", 1203 card->shortname, chip->port, chip->irq); 1204 1205 snd_via82xx_proc_init(chip); 1206 1207 if ((err = snd_card_register(card)) < 0) { 1208 snd_card_free(card); 1209 return err; 1210 } 1211 pci_set_drvdata(pci, card); 1212 dev++; 1213 return 0; 1214 1215 __error: 1216 snd_card_free(card); 1217 return err; 1218 } 1219 1220 static void __devexit snd_via82xx_remove(struct pci_dev *pci) 1221 { 1222 snd_card_free(pci_get_drvdata(pci)); 1223 pci_set_drvdata(pci, NULL); 1224 } 1225 1226 static struct pci_driver driver = { 1227 .name = "VIA 82xx Modem", 1228 .id_table = snd_via82xx_modem_ids, 1229 .probe = snd_via82xx_probe, 1230 .remove = __devexit_p(snd_via82xx_remove), 1231 SND_PCI_PM_CALLBACKS 1232 }; 1233 1234 static int __init alsa_card_via82xx_init(void) 1235 { 1236 return pci_register_driver(&driver); 1237 } 1238 1239 static void __exit alsa_card_via82xx_exit(void) 1240 { 1241 pci_unregister_driver(&driver); 1242 } 1243 1244 module_init(alsa_card_via82xx_init) 1245 module_exit(alsa_card_via82xx_exit) 1246