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 if(reg == AC97_GPIO_STATUS) { 424 outl(val, VIAREG(chip, GPI_STATUS)); 425 return; 426 } 427 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; 428 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; 429 xval |= reg << VIA_REG_AC97_CMD_SHIFT; 430 xval |= val << VIA_REG_AC97_DATA_SHIFT; 431 snd_via82xx_codec_xwrite(chip, xval); 432 snd_via82xx_codec_ready(chip, ac97->num); 433 } 434 435 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg) 436 { 437 via82xx_t *chip = ac97->private_data; 438 unsigned int xval, val = 0xffff; 439 int again = 0; 440 441 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; 442 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; 443 xval |= VIA_REG_AC97_READ; 444 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; 445 while (1) { 446 if (again++ > 3) { 447 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 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(via82xx_t *chip, viadev_t *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, struct pt_regs *regs) 482 { 483 via82xx_t *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 viadev_t *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(snd_pcm_substream_t * substream, int cmd) 520 { 521 via82xx_t *chip = snd_pcm_substream_chip(substream); 522 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 523 unsigned char val = 0; 524 525 switch (cmd) { 526 case SNDRV_PCM_TRIGGER_START: 527 val |= VIA_REG_CTRL_START; 528 viadev->running = 1; 529 break; 530 case SNDRV_PCM_TRIGGER_STOP: 531 val = VIA_REG_CTRL_TERMINATE; 532 viadev->running = 0; 533 break; 534 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 535 val |= VIA_REG_CTRL_PAUSE; 536 viadev->running = 0; 537 break; 538 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 539 viadev->running = 1; 540 break; 541 default: 542 return -EINVAL; 543 } 544 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); 545 if (cmd == SNDRV_PCM_TRIGGER_STOP) 546 snd_via82xx_channel_reset(chip, viadev); 547 return 0; 548 } 549 550 /* 551 * pointer callbacks 552 */ 553 554 /* 555 * calculate the linear position at the given sg-buffer index and the rest count 556 */ 557 558 #define check_invalid_pos(viadev,pos) \ 559 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2)) 560 561 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count) 562 { 563 unsigned int size, res; 564 565 size = viadev->idx_table[idx].size; 566 res = viadev->idx_table[idx].offset + size - count; 567 568 /* check the validity of the calculated position */ 569 if (size < count) { 570 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count); 571 res = viadev->lastpos; 572 } else if (check_invalid_pos(viadev, res)) { 573 #ifdef POINTER_DEBUG 574 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); 575 #endif 576 if (count && size < count) { 577 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n"); 578 res = viadev->lastpos; 579 } else { 580 if (! count) 581 /* bogus count 0 on the DMA boundary? */ 582 res = viadev->idx_table[idx].offset; 583 else 584 /* count register returns full size when end of buffer is reached */ 585 res = viadev->idx_table[idx].offset + size; 586 if (check_invalid_pos(viadev, res)) { 587 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n"); 588 res = viadev->lastpos; 589 } 590 } 591 } 592 viadev->lastpos = res; /* remember the last position */ 593 if (res >= viadev->bufsize) 594 res -= viadev->bufsize; 595 return res; 596 } 597 598 /* 599 * get the current pointer on via686 600 */ 601 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream) 602 { 603 via82xx_t *chip = snd_pcm_substream_chip(substream); 604 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 605 unsigned int idx, ptr, count, res; 606 607 snd_assert(viadev->tbl_entries, return 0); 608 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) 609 return 0; 610 611 spin_lock(&chip->reg_lock); 612 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; 613 /* The via686a does not have the current index register, 614 * so we need to calculate the index from CURR_PTR. 615 */ 616 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); 617 if (ptr <= (unsigned int)viadev->table.addr) 618 idx = 0; 619 else /* CURR_PTR holds the address + 8 */ 620 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries; 621 res = calc_linear_pos(viadev, idx, count); 622 spin_unlock(&chip->reg_lock); 623 624 return bytes_to_frames(substream->runtime, res); 625 } 626 627 /* 628 * hw_params callback: 629 * allocate the buffer and build up the buffer description table 630 */ 631 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream, 632 snd_pcm_hw_params_t * hw_params) 633 { 634 via82xx_t *chip = snd_pcm_substream_chip(substream); 635 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 636 int err; 637 638 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 639 if (err < 0) 640 return err; 641 err = build_via_table(viadev, substream, chip->pci, 642 params_periods(hw_params), 643 params_period_bytes(hw_params)); 644 if (err < 0) 645 return err; 646 647 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); 648 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); 649 650 return 0; 651 } 652 653 /* 654 * hw_free callback: 655 * clean up the buffer description table and release the buffer 656 */ 657 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream) 658 { 659 via82xx_t *chip = snd_pcm_substream_chip(substream); 660 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 661 662 clean_via_table(viadev, substream, chip->pci); 663 snd_pcm_lib_free_pages(substream); 664 return 0; 665 } 666 667 668 /* 669 * set up the table pointer 670 */ 671 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev) 672 { 673 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 674 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); 675 udelay(20); 676 snd_via82xx_codec_ready(chip, chip->ac97_secondary); 677 } 678 679 /* 680 * prepare callback for playback and capture 681 */ 682 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream) 683 { 684 via82xx_t *chip = snd_pcm_substream_chip(substream); 685 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 686 687 snd_via82xx_channel_reset(chip, viadev); 688 /* this must be set after channel_reset */ 689 snd_via82xx_set_table_ptr(chip, viadev); 690 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, 691 VIADEV_REG(viadev, OFFSET_TYPE)); 692 return 0; 693 } 694 695 /* 696 * pcm hardware definition, identical for both playback and capture 697 */ 698 static snd_pcm_hardware_t snd_via82xx_hw = 699 { 700 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 701 SNDRV_PCM_INFO_BLOCK_TRANSFER | 702 SNDRV_PCM_INFO_MMAP_VALID | 703 SNDRV_PCM_INFO_RESUME | 704 SNDRV_PCM_INFO_PAUSE), 705 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 706 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, 707 .rate_min = 8000, 708 .rate_max = 16000, 709 .channels_min = 1, 710 .channels_max = 1, 711 .buffer_bytes_max = 128 * 1024, 712 .period_bytes_min = 32, 713 .period_bytes_max = 128 * 1024, 714 .periods_min = 2, 715 .periods_max = VIA_TABLE_SIZE / 2, 716 .fifo_size = 0, 717 }; 718 719 720 /* 721 * open callback skeleton 722 */ 723 static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream) 724 { 725 snd_pcm_runtime_t *runtime = substream->runtime; 726 int err; 727 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 728 static snd_pcm_hw_constraint_list_t hw_constraints_rates = { 729 .count = ARRAY_SIZE(rates), 730 .list = rates, 731 .mask = 0, 732 }; 733 734 runtime->hw = snd_via82xx_hw; 735 736 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0) 737 return err; 738 739 /* we may remove following constaint when we modify table entries 740 in interrupt */ 741 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 742 return err; 743 744 runtime->private_data = viadev; 745 viadev->substream = substream; 746 747 return 0; 748 } 749 750 751 /* 752 * open callback for playback 753 */ 754 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream) 755 { 756 via82xx_t *chip = snd_pcm_substream_chip(substream); 757 viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number]; 758 759 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 760 } 761 762 /* 763 * open callback for capture 764 */ 765 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream) 766 { 767 via82xx_t *chip = snd_pcm_substream_chip(substream); 768 viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; 769 770 return snd_via82xx_modem_pcm_open(chip, viadev, substream); 771 } 772 773 /* 774 * close callback 775 */ 776 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream) 777 { 778 viadev_t *viadev = (viadev_t *)substream->runtime->private_data; 779 780 viadev->substream = NULL; 781 return 0; 782 } 783 784 785 /* via686 playback callbacks */ 786 static snd_pcm_ops_t snd_via686_playback_ops = { 787 .open = snd_via82xx_playback_open, 788 .close = snd_via82xx_pcm_close, 789 .ioctl = snd_pcm_lib_ioctl, 790 .hw_params = snd_via82xx_hw_params, 791 .hw_free = snd_via82xx_hw_free, 792 .prepare = snd_via82xx_pcm_prepare, 793 .trigger = snd_via82xx_pcm_trigger, 794 .pointer = snd_via686_pcm_pointer, 795 .page = snd_pcm_sgbuf_ops_page, 796 }; 797 798 /* via686 capture callbacks */ 799 static snd_pcm_ops_t snd_via686_capture_ops = { 800 .open = snd_via82xx_capture_open, 801 .close = snd_via82xx_pcm_close, 802 .ioctl = snd_pcm_lib_ioctl, 803 .hw_params = snd_via82xx_hw_params, 804 .hw_free = snd_via82xx_hw_free, 805 .prepare = snd_via82xx_pcm_prepare, 806 .trigger = snd_via82xx_pcm_trigger, 807 .pointer = snd_via686_pcm_pointer, 808 .page = snd_pcm_sgbuf_ops_page, 809 }; 810 811 812 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction) 813 { 814 chip->devs[idx].reg_offset = reg_offset; 815 chip->devs[idx].direction = direction; 816 chip->devs[idx].port = chip->port + reg_offset; 817 } 818 819 /* 820 * create a pcm instance for via686a/b 821 */ 822 static int __devinit snd_via686_pcm_new(via82xx_t *chip) 823 { 824 snd_pcm_t *pcm; 825 int err; 826 827 chip->playback_devno = 0; 828 chip->capture_devno = 1; 829 chip->num_devs = 2; 830 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ 831 832 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); 833 if (err < 0) 834 return err; 835 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); 836 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); 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 chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA; 884 885 memset(&ac97, 0, sizeof(ac97)); 886 ac97.private_data = chip; 887 ac97.private_free = snd_via82xx_mixer_free_ac97; 888 ac97.pci = chip->pci; 889 ac97.scaps = AC97_SCAP_SKIP_AUDIO; 890 ac97.num = chip->ac97_secondary; 891 892 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) 893 return err; 894 895 return 0; 896 } 897 898 899 /* 900 * proc interface 901 */ 902 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) 903 { 904 via82xx_t *chip = entry->private_data; 905 int i; 906 907 snd_iprintf(buffer, "%s\n\n", chip->card->longname); 908 for (i = 0; i < 0xa0; i += 4) { 909 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); 910 } 911 } 912 913 static void __devinit snd_via82xx_proc_init(via82xx_t *chip) 914 { 915 snd_info_entry_t *entry; 916 917 if (! snd_card_proc_new(chip->card, "via82xx", &entry)) 918 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read); 919 } 920 921 /* 922 * 923 */ 924 925 static int snd_via82xx_chip_init(via82xx_t *chip) 926 { 927 unsigned int val; 928 int max_count; 929 unsigned char pval; 930 931 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); 932 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { 933 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); 934 udelay(100); 935 } 936 937 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 938 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ 939 /* deassert ACLink reset, force SYNC */ 940 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 941 VIA_ACLINK_CTRL_ENABLE | 942 VIA_ACLINK_CTRL_RESET | 943 VIA_ACLINK_CTRL_SYNC); 944 udelay(100); 945 #if 1 /* FIXME: should we do full reset here for all chip models? */ 946 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); 947 udelay(100); 948 #else 949 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ 950 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 951 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); 952 udelay(2); 953 #endif 954 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 955 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 956 udelay(100); 957 } 958 959 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); 960 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { 961 /* ACLink on, deassert ACLink reset, VSR, SGD data out */ 962 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); 963 udelay(100); 964 } 965 966 /* wait until codec ready */ 967 max_count = ((3 * HZ) / 4) + 1; 968 do { 969 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); 970 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ 971 break; 972 set_current_state(TASK_UNINTERRUPTIBLE); 973 schedule_timeout(1); 974 } while (--max_count > 0); 975 976 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) 977 snd_printk("AC'97 codec is not ready [0x%x]\n", val); 978 979 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 980 VIA_REG_AC97_SECONDARY_VALID | 981 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 982 max_count = ((3 * HZ) / 4) + 1; 983 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | 984 VIA_REG_AC97_SECONDARY_VALID | 985 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); 986 do { 987 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { 988 chip->ac97_secondary = 1; 989 goto __ac97_ok2; 990 } 991 set_current_state(TASK_INTERRUPTIBLE); 992 schedule_timeout(1); 993 } while (--max_count > 0); 994 /* This is ok, the most of motherboards have only one codec */ 995 996 __ac97_ok2: 997 998 /* route FM trap to IRQ, disable FM trap */ 999 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); 1000 /* disable all GPI interrupts */ 1001 outl(0, VIAREG(chip, GPI_INTR)); 1002 1003 return 0; 1004 } 1005 1006 #ifdef CONFIG_PM 1007 /* 1008 * power management 1009 */ 1010 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state) 1011 { 1012 via82xx_t *chip = card->pm_private_data; 1013 int i; 1014 1015 for (i = 0; i < 2; i++) 1016 if (chip->pcms[i]) 1017 snd_pcm_suspend_all(chip->pcms[i]); 1018 for (i = 0; i < chip->num_devs; i++) 1019 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1020 synchronize_irq(chip->irq); 1021 snd_ac97_suspend(chip->ac97); 1022 pci_set_power_state(chip->pci, 3); 1023 pci_disable_device(chip->pci); 1024 return 0; 1025 } 1026 1027 static int snd_via82xx_resume(snd_card_t *card) 1028 { 1029 via82xx_t *chip = card->pm_private_data; 1030 int i; 1031 1032 pci_enable_device(chip->pci); 1033 pci_set_power_state(chip->pci, 0); 1034 pci_set_master(chip->pci); 1035 1036 snd_via82xx_chip_init(chip); 1037 1038 snd_ac97_resume(chip->ac97); 1039 1040 for (i = 0; i < chip->num_devs; i++) 1041 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1042 1043 return 0; 1044 } 1045 #endif /* CONFIG_PM */ 1046 1047 static int snd_via82xx_free(via82xx_t *chip) 1048 { 1049 unsigned int i; 1050 1051 if (chip->irq < 0) 1052 goto __end_hw; 1053 /* disable interrupts */ 1054 for (i = 0; i < chip->num_devs; i++) 1055 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1056 synchronize_irq(chip->irq); 1057 __end_hw: 1058 if (chip->irq >= 0) 1059 free_irq(chip->irq, (void *)chip); 1060 pci_release_regions(chip->pci); 1061 pci_disable_device(chip->pci); 1062 kfree(chip); 1063 return 0; 1064 } 1065 1066 static int snd_via82xx_dev_free(snd_device_t *device) 1067 { 1068 via82xx_t *chip = device->device_data; 1069 return snd_via82xx_free(chip); 1070 } 1071 1072 static int __devinit snd_via82xx_create(snd_card_t * card, 1073 struct pci_dev *pci, 1074 int chip_type, 1075 int revision, 1076 unsigned int ac97_clock, 1077 via82xx_t ** r_via) 1078 { 1079 via82xx_t *chip; 1080 int err; 1081 static snd_device_ops_t ops = { 1082 .dev_free = snd_via82xx_dev_free, 1083 }; 1084 1085 if ((err = pci_enable_device(pci)) < 0) 1086 return err; 1087 1088 if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) { 1089 pci_disable_device(pci); 1090 return -ENOMEM; 1091 } 1092 1093 spin_lock_init(&chip->reg_lock); 1094 chip->card = card; 1095 chip->pci = pci; 1096 chip->irq = -1; 1097 1098 if ((err = pci_request_regions(pci, card->driver)) < 0) { 1099 kfree(chip); 1100 pci_disable_device(pci); 1101 return err; 1102 } 1103 chip->port = pci_resource_start(pci, 0); 1104 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ, 1105 card->driver, (void *)chip)) { 1106 snd_printk("unable to grab IRQ %d\n", pci->irq); 1107 snd_via82xx_free(chip); 1108 return -EBUSY; 1109 } 1110 chip->irq = pci->irq; 1111 if (ac97_clock >= 8000 && ac97_clock <= 48000) 1112 chip->ac97_clock = ac97_clock; 1113 synchronize_irq(chip->irq); 1114 1115 if ((err = snd_via82xx_chip_init(chip)) < 0) { 1116 snd_via82xx_free(chip); 1117 return err; 1118 } 1119 1120 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1121 snd_via82xx_free(chip); 1122 return err; 1123 } 1124 1125 /* The 8233 ac97 controller does not implement the master bit 1126 * in the pci command register. IMHO this is a violation of the PCI spec. 1127 * We call pci_set_master here because it does not hurt. */ 1128 pci_set_master(pci); 1129 1130 snd_card_set_dev(card, &pci->dev); 1131 1132 *r_via = chip; 1133 return 0; 1134 } 1135 1136 1137 static int __devinit snd_via82xx_probe(struct pci_dev *pci, 1138 const struct pci_device_id *pci_id) 1139 { 1140 static int dev; 1141 snd_card_t *card; 1142 via82xx_t *chip; 1143 unsigned char revision; 1144 int chip_type = 0, card_type; 1145 unsigned int i; 1146 int err; 1147 1148 if (dev >= SNDRV_CARDS) 1149 return -ENODEV; 1150 if (!enable[dev]) { 1151 dev++; 1152 return -ENOENT; 1153 } 1154 1155 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 1156 if (card == NULL) 1157 return -ENOMEM; 1158 1159 card_type = pci_id->driver_data; 1160 pci_read_config_byte(pci, PCI_REVISION_ID, &revision); 1161 switch (card_type) { 1162 case TYPE_CARD_VIA82XX_MODEM: 1163 strcpy(card->driver, "VIA82XX-MODEM"); 1164 sprintf(card->shortname, "VIA 82XX modem"); 1165 break; 1166 default: 1167 snd_printk(KERN_ERR "invalid card type %d\n", card_type); 1168 err = -EINVAL; 1169 goto __error; 1170 } 1171 1172 if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0) 1173 goto __error; 1174 if ((err = snd_via82xx_mixer_new(chip)) < 0) 1175 goto __error; 1176 1177 if ((err = snd_via686_pcm_new(chip)) < 0 ) 1178 goto __error; 1179 1180 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip); 1181 1182 /* disable interrupts */ 1183 for (i = 0; i < chip->num_devs; i++) 1184 snd_via82xx_channel_reset(chip, &chip->devs[i]); 1185 1186 sprintf(card->longname, "%s at 0x%lx, irq %d", 1187 card->shortname, chip->port, chip->irq); 1188 1189 snd_via82xx_proc_init(chip); 1190 1191 if ((err = snd_card_register(card)) < 0) { 1192 snd_card_free(card); 1193 return err; 1194 } 1195 pci_set_drvdata(pci, card); 1196 dev++; 1197 return 0; 1198 1199 __error: 1200 snd_card_free(card); 1201 return err; 1202 } 1203 1204 static void __devexit snd_via82xx_remove(struct pci_dev *pci) 1205 { 1206 snd_card_free(pci_get_drvdata(pci)); 1207 pci_set_drvdata(pci, NULL); 1208 } 1209 1210 static struct pci_driver driver = { 1211 .name = "VIA 82xx Modem", 1212 .id_table = snd_via82xx_modem_ids, 1213 .probe = snd_via82xx_probe, 1214 .remove = __devexit_p(snd_via82xx_remove), 1215 SND_PCI_PM_CALLBACKS 1216 }; 1217 1218 static int __init alsa_card_via82xx_init(void) 1219 { 1220 return pci_register_driver(&driver); 1221 } 1222 1223 static void __exit alsa_card_via82xx_exit(void) 1224 { 1225 pci_unregister_driver(&driver); 1226 } 1227 1228 module_init(alsa_card_via82xx_init) 1229 module_exit(alsa_card_via82xx_exit) 1230