1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * ALSA driver for ATI IXP 150/200/250 AC97 modem controllers 4 * 5 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> 6 */ 7 8 #include <linux/io.h> 9 #include <linux/delay.h> 10 #include <linux/interrupt.h> 11 #include <linux/init.h> 12 #include <linux/pci.h> 13 #include <linux/slab.h> 14 #include <linux/module.h> 15 #include <linux/mutex.h> 16 #include <sound/core.h> 17 #include <sound/pcm.h> 18 #include <sound/pcm_params.h> 19 #include <sound/info.h> 20 #include <sound/ac97_codec.h> 21 #include <sound/initval.h> 22 23 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 24 MODULE_DESCRIPTION("ATI IXP MC97 controller"); 25 MODULE_LICENSE("GPL"); 26 27 static int index = -2; /* Exclude the first card */ 28 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 29 static int ac97_clock = 48000; 30 31 module_param(index, int, 0444); 32 MODULE_PARM_DESC(index, "Index value for ATI IXP controller."); 33 module_param(id, charp, 0444); 34 MODULE_PARM_DESC(id, "ID string for ATI IXP controller."); 35 module_param(ac97_clock, int, 0444); 36 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 37 38 /* just for backward compatibility */ 39 static bool enable; 40 module_param(enable, bool, 0444); 41 42 43 /* 44 */ 45 46 #define ATI_REG_ISR 0x00 /* interrupt source */ 47 #define ATI_REG_ISR_MODEM_IN_XRUN (1U<<0) 48 #define ATI_REG_ISR_MODEM_IN_STATUS (1U<<1) 49 #define ATI_REG_ISR_MODEM_OUT1_XRUN (1U<<2) 50 #define ATI_REG_ISR_MODEM_OUT1_STATUS (1U<<3) 51 #define ATI_REG_ISR_MODEM_OUT2_XRUN (1U<<4) 52 #define ATI_REG_ISR_MODEM_OUT2_STATUS (1U<<5) 53 #define ATI_REG_ISR_MODEM_OUT3_XRUN (1U<<6) 54 #define ATI_REG_ISR_MODEM_OUT3_STATUS (1U<<7) 55 #define ATI_REG_ISR_PHYS_INTR (1U<<8) 56 #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9) 57 #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10) 58 #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11) 59 #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12) 60 #define ATI_REG_ISR_NEW_FRAME (1U<<13) 61 #define ATI_REG_ISR_MODEM_GPIO_DATA (1U<<14) 62 63 #define ATI_REG_IER 0x04 /* interrupt enable */ 64 #define ATI_REG_IER_MODEM_IN_XRUN_EN (1U<<0) 65 #define ATI_REG_IER_MODEM_STATUS_EN (1U<<1) 66 #define ATI_REG_IER_MODEM_OUT1_XRUN_EN (1U<<2) 67 #define ATI_REG_IER_MODEM_OUT2_XRUN_EN (1U<<4) 68 #define ATI_REG_IER_MODEM_OUT3_XRUN_EN (1U<<6) 69 #define ATI_REG_IER_PHYS_INTR_EN (1U<<8) 70 #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9) 71 #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10) 72 #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11) 73 #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12) 74 #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */ 75 #define ATI_REG_IER_MODEM_GPIO_DATA_EN (1U<<14) /* (WO) modem is running */ 76 #define ATI_REG_IER_MODEM_SET_BUS_BUSY (1U<<15) 77 78 #define ATI_REG_CMD 0x08 /* command */ 79 #define ATI_REG_CMD_POWERDOWN (1U<<0) 80 #define ATI_REG_CMD_MODEM_RECEIVE_EN (1U<<1) /* modem only */ 81 #define ATI_REG_CMD_MODEM_SEND1_EN (1U<<2) /* modem only */ 82 #define ATI_REG_CMD_MODEM_SEND2_EN (1U<<3) /* modem only */ 83 #define ATI_REG_CMD_MODEM_SEND3_EN (1U<<4) /* modem only */ 84 #define ATI_REG_CMD_MODEM_STATUS_MEM (1U<<5) /* modem only */ 85 #define ATI_REG_CMD_MODEM_IN_DMA_EN (1U<<8) /* modem only */ 86 #define ATI_REG_CMD_MODEM_OUT_DMA1_EN (1U<<9) /* modem only */ 87 #define ATI_REG_CMD_MODEM_OUT_DMA2_EN (1U<<10) /* modem only */ 88 #define ATI_REG_CMD_MODEM_OUT_DMA3_EN (1U<<11) /* modem only */ 89 #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20) 90 #define ATI_REG_CMD_MODEM_GPIO_THRU_DMA (1U<<22) /* modem only */ 91 #define ATI_REG_CMD_LOOPBACK_EN (1U<<23) 92 #define ATI_REG_CMD_PACKED_DIS (1U<<24) 93 #define ATI_REG_CMD_BURST_EN (1U<<25) 94 #define ATI_REG_CMD_PANIC_EN (1U<<26) 95 #define ATI_REG_CMD_MODEM_PRESENT (1U<<27) 96 #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28) 97 #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29) 98 #define ATI_REG_CMD_AC_SYNC (1U<<30) 99 #define ATI_REG_CMD_AC_RESET (1U<<31) 100 101 #define ATI_REG_PHYS_OUT_ADDR 0x0c 102 #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0) 103 #define ATI_REG_PHYS_OUT_RW (1U<<2) 104 #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8) 105 #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9 106 #define ATI_REG_PHYS_OUT_DATA_SHIFT 16 107 108 #define ATI_REG_PHYS_IN_ADDR 0x10 109 #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8) 110 #define ATI_REG_PHYS_IN_ADDR_SHIFT 9 111 #define ATI_REG_PHYS_IN_DATA_SHIFT 16 112 113 #define ATI_REG_SLOTREQ 0x14 114 115 #define ATI_REG_COUNTER 0x18 116 #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */ 117 #define ATI_REG_COUNTER_BITCLOCK (31U<<8) 118 119 #define ATI_REG_IN_FIFO_THRESHOLD 0x1c 120 121 #define ATI_REG_MODEM_IN_DMA_LINKPTR 0x20 122 #define ATI_REG_MODEM_IN_DMA_DT_START 0x24 /* RO */ 123 #define ATI_REG_MODEM_IN_DMA_DT_NEXT 0x28 /* RO */ 124 #define ATI_REG_MODEM_IN_DMA_DT_CUR 0x2c /* RO */ 125 #define ATI_REG_MODEM_IN_DMA_DT_SIZE 0x30 126 #define ATI_REG_MODEM_OUT_FIFO 0x34 /* output threshold */ 127 #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK (0xf<<16) 128 #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT 16 129 #define ATI_REG_MODEM_OUT_DMA1_LINKPTR 0x38 130 #define ATI_REG_MODEM_OUT_DMA2_LINKPTR 0x3c 131 #define ATI_REG_MODEM_OUT_DMA3_LINKPTR 0x40 132 #define ATI_REG_MODEM_OUT_DMA1_DT_START 0x44 133 #define ATI_REG_MODEM_OUT_DMA1_DT_NEXT 0x48 134 #define ATI_REG_MODEM_OUT_DMA1_DT_CUR 0x4c 135 #define ATI_REG_MODEM_OUT_DMA2_DT_START 0x50 136 #define ATI_REG_MODEM_OUT_DMA2_DT_NEXT 0x54 137 #define ATI_REG_MODEM_OUT_DMA2_DT_CUR 0x58 138 #define ATI_REG_MODEM_OUT_DMA3_DT_START 0x5c 139 #define ATI_REG_MODEM_OUT_DMA3_DT_NEXT 0x60 140 #define ATI_REG_MODEM_OUT_DMA3_DT_CUR 0x64 141 #define ATI_REG_MODEM_OUT_DMA12_DT_SIZE 0x68 142 #define ATI_REG_MODEM_OUT_DMA3_DT_SIZE 0x6c 143 #define ATI_REG_MODEM_OUT_FIFO_USED 0x70 144 #define ATI_REG_MODEM_OUT_GPIO 0x74 145 #define ATI_REG_MODEM_OUT_GPIO_EN 1 146 #define ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT 5 147 #define ATI_REG_MODEM_IN_GPIO 0x78 148 149 #define ATI_REG_MODEM_MIRROR 0x7c 150 #define ATI_REG_AUDIO_MIRROR 0x80 151 152 #define ATI_REG_MODEM_FIFO_FLUSH 0x88 153 #define ATI_REG_MODEM_FIFO_OUT1_FLUSH (1U<<0) 154 #define ATI_REG_MODEM_FIFO_OUT2_FLUSH (1U<<1) 155 #define ATI_REG_MODEM_FIFO_OUT3_FLUSH (1U<<2) 156 #define ATI_REG_MODEM_FIFO_IN_FLUSH (1U<<3) 157 158 /* LINKPTR */ 159 #define ATI_REG_LINKPTR_EN (1U<<0) 160 161 #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */ 162 163 164 struct atiixp_modem; 165 166 /* 167 * DMA packate descriptor 168 */ 169 170 struct atiixp_dma_desc { 171 __le32 addr; /* DMA buffer address */ 172 u16 status; /* status bits */ 173 u16 size; /* size of the packet in dwords */ 174 __le32 next; /* address of the next packet descriptor */ 175 }; 176 177 /* 178 * stream enum 179 */ 180 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */ 181 enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */ 182 enum { ATI_PCMDEV_ANALOG, NUM_ATI_PCMDEVS }; /* pcm devices */ 183 184 #define NUM_ATI_CODECS 3 185 186 187 /* 188 * constants and callbacks for each DMA type 189 */ 190 struct atiixp_dma_ops { 191 int type; /* ATI_DMA_XXX */ 192 unsigned int llp_offset; /* LINKPTR offset */ 193 unsigned int dt_cur; /* DT_CUR offset */ 194 /* called from open callback */ 195 void (*enable_dma)(struct atiixp_modem *chip, int on); 196 /* called from trigger (START/STOP) */ 197 void (*enable_transfer)(struct atiixp_modem *chip, int on); 198 /* called from trigger (STOP only) */ 199 void (*flush_dma)(struct atiixp_modem *chip); 200 }; 201 202 /* 203 * DMA stream 204 */ 205 struct atiixp_dma { 206 const struct atiixp_dma_ops *ops; 207 struct snd_dma_buffer desc_buf; 208 struct snd_pcm_substream *substream; /* assigned PCM substream */ 209 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */ 210 unsigned int period_bytes, periods; 211 int opened; 212 int running; 213 int pcm_open_flag; 214 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */ 215 }; 216 217 /* 218 * ATI IXP chip 219 */ 220 struct atiixp_modem { 221 struct snd_card *card; 222 struct pci_dev *pci; 223 224 struct resource *res; /* memory i/o */ 225 unsigned long addr; 226 void __iomem *remap_addr; 227 int irq; 228 229 struct snd_ac97_bus *ac97_bus; 230 struct snd_ac97 *ac97[NUM_ATI_CODECS]; 231 232 spinlock_t reg_lock; 233 234 struct atiixp_dma dmas[NUM_ATI_DMAS]; 235 struct ac97_pcm *pcms[NUM_ATI_PCMS]; 236 struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS]; 237 238 int max_channels; /* max. channels for PCM out */ 239 240 unsigned int codec_not_ready_bits; /* for codec detection */ 241 242 int spdif_over_aclink; /* passed from the module option */ 243 struct mutex open_mutex; /* playback open mutex */ 244 }; 245 246 247 /* 248 */ 249 static const struct pci_device_id snd_atiixp_ids[] = { 250 { PCI_VDEVICE(ATI, 0x434d), 0 }, /* SB200 */ 251 { PCI_VDEVICE(ATI, 0x4378), 0 }, /* SB400 */ 252 { 0, } 253 }; 254 255 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids); 256 257 258 /* 259 * lowlevel functions 260 */ 261 262 /* 263 * update the bits of the given register. 264 * return 1 if the bits changed. 265 */ 266 static int snd_atiixp_update_bits(struct atiixp_modem *chip, unsigned int reg, 267 unsigned int mask, unsigned int value) 268 { 269 void __iomem *addr = chip->remap_addr + reg; 270 unsigned int data, old_data; 271 old_data = data = readl(addr); 272 data &= ~mask; 273 data |= value; 274 if (old_data == data) 275 return 0; 276 writel(data, addr); 277 return 1; 278 } 279 280 /* 281 * macros for easy use 282 */ 283 #define atiixp_write(chip,reg,value) \ 284 writel(value, chip->remap_addr + ATI_REG_##reg) 285 #define atiixp_read(chip,reg) \ 286 readl(chip->remap_addr + ATI_REG_##reg) 287 #define atiixp_update(chip,reg,mask,val) \ 288 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val) 289 290 /* 291 * handling DMA packets 292 * 293 * we allocate a linear buffer for the DMA, and split it to each packet. 294 * in a future version, a scatter-gather buffer should be implemented. 295 */ 296 297 #define ATI_DESC_LIST_SIZE \ 298 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc)) 299 300 /* 301 * build packets ring for the given buffer size. 302 * 303 * IXP handles the buffer descriptors, which are connected as a linked 304 * list. although we can change the list dynamically, in this version, 305 * a static RING of buffer descriptors is used. 306 * 307 * the ring is built in this function, and is set up to the hardware. 308 */ 309 static int atiixp_build_dma_packets(struct atiixp_modem *chip, 310 struct atiixp_dma *dma, 311 struct snd_pcm_substream *substream, 312 unsigned int periods, 313 unsigned int period_bytes) 314 { 315 unsigned int i; 316 u32 addr, desc_addr; 317 unsigned long flags; 318 319 if (periods > ATI_MAX_DESCRIPTORS) 320 return -ENOMEM; 321 322 if (dma->desc_buf.area == NULL) { 323 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev, 324 ATI_DESC_LIST_SIZE, &dma->desc_buf) < 0) 325 return -ENOMEM; 326 dma->period_bytes = dma->periods = 0; /* clear */ 327 } 328 329 if (dma->periods == periods && dma->period_bytes == period_bytes) 330 return 0; 331 332 /* reset DMA before changing the descriptor table */ 333 spin_lock_irqsave(&chip->reg_lock, flags); 334 writel(0, chip->remap_addr + dma->ops->llp_offset); 335 dma->ops->enable_dma(chip, 0); 336 dma->ops->enable_dma(chip, 1); 337 spin_unlock_irqrestore(&chip->reg_lock, flags); 338 339 /* fill the entries */ 340 addr = (u32)substream->runtime->dma_addr; 341 desc_addr = (u32)dma->desc_buf.addr; 342 for (i = 0; i < periods; i++) { 343 struct atiixp_dma_desc *desc; 344 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i]; 345 desc->addr = cpu_to_le32(addr); 346 desc->status = 0; 347 desc->size = period_bytes >> 2; /* in dwords */ 348 desc_addr += sizeof(struct atiixp_dma_desc); 349 if (i == periods - 1) 350 desc->next = cpu_to_le32((u32)dma->desc_buf.addr); 351 else 352 desc->next = cpu_to_le32(desc_addr); 353 addr += period_bytes; 354 } 355 356 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN, 357 chip->remap_addr + dma->ops->llp_offset); 358 359 dma->period_bytes = period_bytes; 360 dma->periods = periods; 361 362 return 0; 363 } 364 365 /* 366 * remove the ring buffer and release it if assigned 367 */ 368 static void atiixp_clear_dma_packets(struct atiixp_modem *chip, 369 struct atiixp_dma *dma, 370 struct snd_pcm_substream *substream) 371 { 372 if (dma->desc_buf.area) { 373 writel(0, chip->remap_addr + dma->ops->llp_offset); 374 snd_dma_free_pages(&dma->desc_buf); 375 dma->desc_buf.area = NULL; 376 } 377 } 378 379 /* 380 * AC97 interface 381 */ 382 static int snd_atiixp_acquire_codec(struct atiixp_modem *chip) 383 { 384 int timeout = 1000; 385 386 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) { 387 if (! timeout--) { 388 dev_warn(chip->card->dev, "codec acquire timeout\n"); 389 return -EBUSY; 390 } 391 udelay(1); 392 } 393 return 0; 394 } 395 396 static unsigned short snd_atiixp_codec_read(struct atiixp_modem *chip, 397 unsigned short codec, 398 unsigned short reg) 399 { 400 unsigned int data; 401 int timeout; 402 403 if (snd_atiixp_acquire_codec(chip) < 0) 404 return 0xffff; 405 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | 406 ATI_REG_PHYS_OUT_ADDR_EN | 407 ATI_REG_PHYS_OUT_RW | 408 codec; 409 atiixp_write(chip, PHYS_OUT_ADDR, data); 410 if (snd_atiixp_acquire_codec(chip) < 0) 411 return 0xffff; 412 timeout = 1000; 413 do { 414 data = atiixp_read(chip, PHYS_IN_ADDR); 415 if (data & ATI_REG_PHYS_IN_READ_FLAG) 416 return data >> ATI_REG_PHYS_IN_DATA_SHIFT; 417 udelay(1); 418 } while (--timeout); 419 /* time out may happen during reset */ 420 if (reg < 0x7c) 421 dev_warn(chip->card->dev, "codec read timeout (reg %x)\n", reg); 422 return 0xffff; 423 } 424 425 426 static void snd_atiixp_codec_write(struct atiixp_modem *chip, 427 unsigned short codec, 428 unsigned short reg, unsigned short val) 429 { 430 unsigned int data; 431 432 if (snd_atiixp_acquire_codec(chip) < 0) 433 return; 434 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) | 435 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | 436 ATI_REG_PHYS_OUT_ADDR_EN | codec; 437 atiixp_write(chip, PHYS_OUT_ADDR, data); 438 } 439 440 441 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97, 442 unsigned short reg) 443 { 444 struct atiixp_modem *chip = ac97->private_data; 445 return snd_atiixp_codec_read(chip, ac97->num, reg); 446 447 } 448 449 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg, 450 unsigned short val) 451 { 452 struct atiixp_modem *chip = ac97->private_data; 453 if (reg == AC97_GPIO_STATUS) { 454 atiixp_write(chip, MODEM_OUT_GPIO, 455 (val << ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT) | ATI_REG_MODEM_OUT_GPIO_EN); 456 return; 457 } 458 snd_atiixp_codec_write(chip, ac97->num, reg, val); 459 } 460 461 /* 462 * reset AC link 463 */ 464 static int snd_atiixp_aclink_reset(struct atiixp_modem *chip) 465 { 466 int timeout; 467 468 /* reset powerdoewn */ 469 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0)) 470 udelay(10); 471 472 /* perform a software reset */ 473 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET); 474 atiixp_read(chip, CMD); 475 udelay(10); 476 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0); 477 478 timeout = 10; 479 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) { 480 /* do a hard reset */ 481 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET, 482 ATI_REG_CMD_AC_SYNC); 483 atiixp_read(chip, CMD); 484 msleep(1); 485 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET); 486 if (!--timeout) { 487 dev_err(chip->card->dev, "codec reset timeout\n"); 488 break; 489 } 490 } 491 492 /* deassert RESET and assert SYNC to make sure */ 493 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET, 494 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET); 495 496 return 0; 497 } 498 499 #ifdef CONFIG_PM_SLEEP 500 static int snd_atiixp_aclink_down(struct atiixp_modem *chip) 501 { 502 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */ 503 // return -EBUSY; 504 atiixp_update(chip, CMD, 505 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET, 506 ATI_REG_CMD_POWERDOWN); 507 return 0; 508 } 509 #endif 510 511 /* 512 * auto-detection of codecs 513 * 514 * the IXP chip can generate interrupts for the non-existing codecs. 515 * NEW_FRAME interrupt is used to make sure that the interrupt is generated 516 * even if all three codecs are connected. 517 */ 518 519 #define ALL_CODEC_NOT_READY \ 520 (ATI_REG_ISR_CODEC0_NOT_READY |\ 521 ATI_REG_ISR_CODEC1_NOT_READY |\ 522 ATI_REG_ISR_CODEC2_NOT_READY) 523 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME) 524 525 static int snd_atiixp_codec_detect(struct atiixp_modem *chip) 526 { 527 int timeout; 528 529 chip->codec_not_ready_bits = 0; 530 atiixp_write(chip, IER, CODEC_CHECK_BITS); 531 /* wait for the interrupts */ 532 timeout = 50; 533 while (timeout-- > 0) { 534 msleep(1); 535 if (chip->codec_not_ready_bits) 536 break; 537 } 538 atiixp_write(chip, IER, 0); /* disable irqs */ 539 540 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) { 541 dev_err(chip->card->dev, "no codec detected!\n"); 542 return -ENXIO; 543 } 544 return 0; 545 } 546 547 548 /* 549 * enable DMA and irqs 550 */ 551 static int snd_atiixp_chip_start(struct atiixp_modem *chip) 552 { 553 unsigned int reg; 554 555 /* set up spdif, enable burst mode */ 556 reg = atiixp_read(chip, CMD); 557 reg |= ATI_REG_CMD_BURST_EN; 558 if(!(reg & ATI_REG_CMD_MODEM_PRESENT)) 559 reg |= ATI_REG_CMD_MODEM_PRESENT; 560 atiixp_write(chip, CMD, reg); 561 562 /* clear all interrupt source */ 563 atiixp_write(chip, ISR, 0xffffffff); 564 /* enable irqs */ 565 atiixp_write(chip, IER, 566 ATI_REG_IER_MODEM_STATUS_EN | 567 ATI_REG_IER_MODEM_IN_XRUN_EN | 568 ATI_REG_IER_MODEM_OUT1_XRUN_EN); 569 return 0; 570 } 571 572 573 /* 574 * disable DMA and IRQs 575 */ 576 static int snd_atiixp_chip_stop(struct atiixp_modem *chip) 577 { 578 /* clear interrupt source */ 579 atiixp_write(chip, ISR, atiixp_read(chip, ISR)); 580 /* disable irqs */ 581 atiixp_write(chip, IER, 0); 582 return 0; 583 } 584 585 586 /* 587 * PCM section 588 */ 589 590 /* 591 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current 592 * position. when SG-buffer is implemented, the offset must be calculated 593 * correctly... 594 */ 595 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream) 596 { 597 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 598 struct snd_pcm_runtime *runtime = substream->runtime; 599 struct atiixp_dma *dma = runtime->private_data; 600 unsigned int curptr; 601 int timeout = 1000; 602 603 while (timeout--) { 604 curptr = readl(chip->remap_addr + dma->ops->dt_cur); 605 if (curptr < dma->buf_addr) 606 continue; 607 curptr -= dma->buf_addr; 608 if (curptr >= dma->buf_bytes) 609 continue; 610 return bytes_to_frames(runtime, curptr); 611 } 612 dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n", 613 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr); 614 return 0; 615 } 616 617 /* 618 * XRUN detected, and stop the PCM substream 619 */ 620 static void snd_atiixp_xrun_dma(struct atiixp_modem *chip, 621 struct atiixp_dma *dma) 622 { 623 if (! dma->substream || ! dma->running) 624 return; 625 dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type); 626 snd_pcm_stop_xrun(dma->substream); 627 } 628 629 /* 630 * the period ack. update the substream. 631 */ 632 static void snd_atiixp_update_dma(struct atiixp_modem *chip, 633 struct atiixp_dma *dma) 634 { 635 if (! dma->substream || ! dma->running) 636 return; 637 snd_pcm_period_elapsed(dma->substream); 638 } 639 640 /* set BUS_BUSY interrupt bit if any DMA is running */ 641 /* call with spinlock held */ 642 static void snd_atiixp_check_bus_busy(struct atiixp_modem *chip) 643 { 644 unsigned int bus_busy; 645 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN | 646 ATI_REG_CMD_MODEM_RECEIVE_EN)) 647 bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY; 648 else 649 bus_busy = 0; 650 atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy); 651 } 652 653 /* common trigger callback 654 * calling the lowlevel callbacks in it 655 */ 656 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 657 { 658 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 659 struct atiixp_dma *dma = substream->runtime->private_data; 660 int err = 0; 661 662 if (snd_BUG_ON(!dma->ops->enable_transfer || 663 !dma->ops->flush_dma)) 664 return -EINVAL; 665 666 spin_lock(&chip->reg_lock); 667 switch(cmd) { 668 case SNDRV_PCM_TRIGGER_START: 669 dma->ops->enable_transfer(chip, 1); 670 dma->running = 1; 671 break; 672 case SNDRV_PCM_TRIGGER_STOP: 673 dma->ops->enable_transfer(chip, 0); 674 dma->running = 0; 675 break; 676 default: 677 err = -EINVAL; 678 break; 679 } 680 if (! err) { 681 snd_atiixp_check_bus_busy(chip); 682 if (cmd == SNDRV_PCM_TRIGGER_STOP) { 683 dma->ops->flush_dma(chip); 684 snd_atiixp_check_bus_busy(chip); 685 } 686 } 687 spin_unlock(&chip->reg_lock); 688 return err; 689 } 690 691 692 /* 693 * lowlevel callbacks for each DMA type 694 * 695 * every callback is supposed to be called in chip->reg_lock spinlock 696 */ 697 698 /* flush FIFO of analog OUT DMA */ 699 static void atiixp_out_flush_dma(struct atiixp_modem *chip) 700 { 701 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH); 702 } 703 704 /* enable/disable analog OUT DMA */ 705 static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on) 706 { 707 unsigned int data; 708 data = atiixp_read(chip, CMD); 709 if (on) { 710 if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN) 711 return; 712 atiixp_out_flush_dma(chip); 713 data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN; 714 } else 715 data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN; 716 atiixp_write(chip, CMD, data); 717 } 718 719 /* start/stop transfer over OUT DMA */ 720 static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on) 721 { 722 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN, 723 on ? ATI_REG_CMD_MODEM_SEND1_EN : 0); 724 } 725 726 /* enable/disable analog IN DMA */ 727 static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on) 728 { 729 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN, 730 on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0); 731 } 732 733 /* start/stop analog IN DMA */ 734 static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on) 735 { 736 if (on) { 737 unsigned int data = atiixp_read(chip, CMD); 738 if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) { 739 data |= ATI_REG_CMD_MODEM_RECEIVE_EN; 740 atiixp_write(chip, CMD, data); 741 } 742 } else 743 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0); 744 } 745 746 /* flush FIFO of analog IN DMA */ 747 static void atiixp_in_flush_dma(struct atiixp_modem *chip) 748 { 749 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH); 750 } 751 752 /* set up slots and formats for analog OUT */ 753 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream) 754 { 755 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 756 unsigned int data; 757 758 spin_lock_irq(&chip->reg_lock); 759 /* set output threshold */ 760 data = atiixp_read(chip, MODEM_OUT_FIFO); 761 data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK; 762 data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT; 763 atiixp_write(chip, MODEM_OUT_FIFO, data); 764 spin_unlock_irq(&chip->reg_lock); 765 return 0; 766 } 767 768 /* set up slots and formats for analog IN */ 769 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream) 770 { 771 return 0; 772 } 773 774 /* 775 * hw_params - allocate the buffer and set up buffer descriptors 776 */ 777 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream, 778 struct snd_pcm_hw_params *hw_params) 779 { 780 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 781 struct atiixp_dma *dma = substream->runtime->private_data; 782 int err; 783 int i; 784 785 dma->buf_addr = substream->runtime->dma_addr; 786 dma->buf_bytes = params_buffer_bytes(hw_params); 787 788 err = atiixp_build_dma_packets(chip, dma, substream, 789 params_periods(hw_params), 790 params_period_bytes(hw_params)); 791 if (err < 0) 792 return err; 793 794 /* set up modem rate */ 795 for (i = 0; i < NUM_ATI_CODECS; i++) { 796 if (! chip->ac97[i]) 797 continue; 798 snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params)); 799 snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0); 800 } 801 802 return err; 803 } 804 805 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream) 806 { 807 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 808 struct atiixp_dma *dma = substream->runtime->private_data; 809 810 atiixp_clear_dma_packets(chip, dma, substream); 811 return 0; 812 } 813 814 815 /* 816 * pcm hardware definition, identical for all DMA types 817 */ 818 static const struct snd_pcm_hardware snd_atiixp_pcm_hw = 819 { 820 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 821 SNDRV_PCM_INFO_BLOCK_TRANSFER | 822 SNDRV_PCM_INFO_MMAP_VALID), 823 .formats = SNDRV_PCM_FMTBIT_S16_LE, 824 .rates = (SNDRV_PCM_RATE_8000 | 825 SNDRV_PCM_RATE_16000 | 826 SNDRV_PCM_RATE_KNOT), 827 .rate_min = 8000, 828 .rate_max = 16000, 829 .channels_min = 2, 830 .channels_max = 2, 831 .buffer_bytes_max = 256 * 1024, 832 .period_bytes_min = 32, 833 .period_bytes_max = 128 * 1024, 834 .periods_min = 2, 835 .periods_max = ATI_MAX_DESCRIPTORS, 836 }; 837 838 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream, 839 struct atiixp_dma *dma, int pcm_type) 840 { 841 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 842 struct snd_pcm_runtime *runtime = substream->runtime; 843 int err; 844 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 845 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { 846 .count = ARRAY_SIZE(rates), 847 .list = rates, 848 .mask = 0, 849 }; 850 851 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 852 return -EINVAL; 853 854 if (dma->opened) 855 return -EBUSY; 856 dma->substream = substream; 857 runtime->hw = snd_atiixp_pcm_hw; 858 dma->ac97_pcm_type = pcm_type; 859 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 860 &hw_constraints_rates); 861 if (err < 0) 862 return err; 863 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 864 if (err < 0) 865 return err; 866 runtime->private_data = dma; 867 868 /* enable DMA bits */ 869 spin_lock_irq(&chip->reg_lock); 870 dma->ops->enable_dma(chip, 1); 871 spin_unlock_irq(&chip->reg_lock); 872 dma->opened = 1; 873 874 return 0; 875 } 876 877 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream, 878 struct atiixp_dma *dma) 879 { 880 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 881 /* disable DMA bits */ 882 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 883 return -EINVAL; 884 spin_lock_irq(&chip->reg_lock); 885 dma->ops->enable_dma(chip, 0); 886 spin_unlock_irq(&chip->reg_lock); 887 dma->substream = NULL; 888 dma->opened = 0; 889 return 0; 890 } 891 892 /* 893 */ 894 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream) 895 { 896 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 897 int err; 898 899 mutex_lock(&chip->open_mutex); 900 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0); 901 mutex_unlock(&chip->open_mutex); 902 if (err < 0) 903 return err; 904 return 0; 905 } 906 907 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream) 908 { 909 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 910 int err; 911 mutex_lock(&chip->open_mutex); 912 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]); 913 mutex_unlock(&chip->open_mutex); 914 return err; 915 } 916 917 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream) 918 { 919 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 920 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1); 921 } 922 923 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream) 924 { 925 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 926 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]); 927 } 928 929 930 /* AC97 playback */ 931 static const struct snd_pcm_ops snd_atiixp_playback_ops = { 932 .open = snd_atiixp_playback_open, 933 .close = snd_atiixp_playback_close, 934 .hw_params = snd_atiixp_pcm_hw_params, 935 .hw_free = snd_atiixp_pcm_hw_free, 936 .prepare = snd_atiixp_playback_prepare, 937 .trigger = snd_atiixp_pcm_trigger, 938 .pointer = snd_atiixp_pcm_pointer, 939 }; 940 941 /* AC97 capture */ 942 static const struct snd_pcm_ops snd_atiixp_capture_ops = { 943 .open = snd_atiixp_capture_open, 944 .close = snd_atiixp_capture_close, 945 .hw_params = snd_atiixp_pcm_hw_params, 946 .hw_free = snd_atiixp_pcm_hw_free, 947 .prepare = snd_atiixp_capture_prepare, 948 .trigger = snd_atiixp_pcm_trigger, 949 .pointer = snd_atiixp_pcm_pointer, 950 }; 951 952 static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = { 953 .type = ATI_DMA_PLAYBACK, 954 .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR, 955 .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR, 956 .enable_dma = atiixp_out_enable_dma, 957 .enable_transfer = atiixp_out_enable_transfer, 958 .flush_dma = atiixp_out_flush_dma, 959 }; 960 961 static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = { 962 .type = ATI_DMA_CAPTURE, 963 .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR, 964 .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR, 965 .enable_dma = atiixp_in_enable_dma, 966 .enable_transfer = atiixp_in_enable_transfer, 967 .flush_dma = atiixp_in_flush_dma, 968 }; 969 970 static int snd_atiixp_pcm_new(struct atiixp_modem *chip) 971 { 972 struct snd_pcm *pcm; 973 int err; 974 975 /* initialize constants */ 976 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops; 977 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops; 978 979 /* PCM #0: analog I/O */ 980 err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm); 981 if (err < 0) 982 return err; 983 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops); 984 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops); 985 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 986 pcm->private_data = chip; 987 strcpy(pcm->name, "ATI IXP MC97"); 988 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm; 989 990 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, 991 &chip->pci->dev, 64*1024, 128*1024); 992 993 return 0; 994 } 995 996 997 998 /* 999 * interrupt handler 1000 */ 1001 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id) 1002 { 1003 struct atiixp_modem *chip = dev_id; 1004 unsigned int status; 1005 1006 status = atiixp_read(chip, ISR); 1007 1008 if (! status) 1009 return IRQ_NONE; 1010 1011 /* process audio DMA */ 1012 if (status & ATI_REG_ISR_MODEM_OUT1_XRUN) 1013 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1014 else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS) 1015 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1016 if (status & ATI_REG_ISR_MODEM_IN_XRUN) 1017 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1018 else if (status & ATI_REG_ISR_MODEM_IN_STATUS) 1019 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1020 1021 /* for codec detection */ 1022 if (status & CODEC_CHECK_BITS) { 1023 unsigned int detected; 1024 detected = status & CODEC_CHECK_BITS; 1025 spin_lock(&chip->reg_lock); 1026 chip->codec_not_ready_bits |= detected; 1027 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */ 1028 spin_unlock(&chip->reg_lock); 1029 } 1030 1031 /* ack */ 1032 atiixp_write(chip, ISR, status); 1033 1034 return IRQ_HANDLED; 1035 } 1036 1037 1038 /* 1039 * ac97 mixer section 1040 */ 1041 1042 static int snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock) 1043 { 1044 struct snd_ac97_bus *pbus; 1045 struct snd_ac97_template ac97; 1046 int i, err; 1047 int codec_count; 1048 static const struct snd_ac97_bus_ops ops = { 1049 .write = snd_atiixp_ac97_write, 1050 .read = snd_atiixp_ac97_read, 1051 }; 1052 static const unsigned int codec_skip[NUM_ATI_CODECS] = { 1053 ATI_REG_ISR_CODEC0_NOT_READY, 1054 ATI_REG_ISR_CODEC1_NOT_READY, 1055 ATI_REG_ISR_CODEC2_NOT_READY, 1056 }; 1057 1058 if (snd_atiixp_codec_detect(chip) < 0) 1059 return -ENXIO; 1060 1061 err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus); 1062 if (err < 0) 1063 return err; 1064 pbus->clock = clock; 1065 chip->ac97_bus = pbus; 1066 1067 codec_count = 0; 1068 for (i = 0; i < NUM_ATI_CODECS; i++) { 1069 if (chip->codec_not_ready_bits & codec_skip[i]) 1070 continue; 1071 memset(&ac97, 0, sizeof(ac97)); 1072 ac97.private_data = chip; 1073 ac97.pci = chip->pci; 1074 ac97.num = i; 1075 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 1076 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i]); 1077 if (err < 0) { 1078 chip->ac97[i] = NULL; /* to be sure */ 1079 dev_dbg(chip->card->dev, 1080 "codec %d not available for modem\n", i); 1081 continue; 1082 } 1083 codec_count++; 1084 } 1085 1086 if (! codec_count) { 1087 dev_err(chip->card->dev, "no codec available\n"); 1088 return -ENODEV; 1089 } 1090 1091 /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */ 1092 1093 return 0; 1094 } 1095 1096 1097 #ifdef CONFIG_PM_SLEEP 1098 /* 1099 * power management 1100 */ 1101 static int snd_atiixp_suspend(struct device *dev) 1102 { 1103 struct snd_card *card = dev_get_drvdata(dev); 1104 struct atiixp_modem *chip = card->private_data; 1105 int i; 1106 1107 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1108 for (i = 0; i < NUM_ATI_CODECS; i++) 1109 snd_ac97_suspend(chip->ac97[i]); 1110 snd_atiixp_aclink_down(chip); 1111 snd_atiixp_chip_stop(chip); 1112 return 0; 1113 } 1114 1115 static int snd_atiixp_resume(struct device *dev) 1116 { 1117 struct snd_card *card = dev_get_drvdata(dev); 1118 struct atiixp_modem *chip = card->private_data; 1119 int i; 1120 1121 snd_atiixp_aclink_reset(chip); 1122 snd_atiixp_chip_start(chip); 1123 1124 for (i = 0; i < NUM_ATI_CODECS; i++) 1125 snd_ac97_resume(chip->ac97[i]); 1126 1127 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1128 return 0; 1129 } 1130 1131 static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume); 1132 #define SND_ATIIXP_PM_OPS &snd_atiixp_pm 1133 #else 1134 #define SND_ATIIXP_PM_OPS NULL 1135 #endif /* CONFIG_PM_SLEEP */ 1136 1137 /* 1138 * proc interface for register dump 1139 */ 1140 1141 static void snd_atiixp_proc_read(struct snd_info_entry *entry, 1142 struct snd_info_buffer *buffer) 1143 { 1144 struct atiixp_modem *chip = entry->private_data; 1145 int i; 1146 1147 for (i = 0; i < 256; i += 4) 1148 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i)); 1149 } 1150 1151 static void snd_atiixp_proc_init(struct atiixp_modem *chip) 1152 { 1153 snd_card_ro_proc_new(chip->card, "atiixp-modem", chip, 1154 snd_atiixp_proc_read); 1155 } 1156 1157 1158 /* 1159 * destructor 1160 */ 1161 1162 static void snd_atiixp_free(struct snd_card *card) 1163 { 1164 snd_atiixp_chip_stop(card->private_data); 1165 } 1166 1167 /* 1168 * constructor for chip instance 1169 */ 1170 static int snd_atiixp_init(struct snd_card *card, struct pci_dev *pci) 1171 { 1172 struct atiixp_modem *chip = card->private_data; 1173 int err; 1174 1175 err = pcim_enable_device(pci); 1176 if (err < 0) 1177 return err; 1178 1179 spin_lock_init(&chip->reg_lock); 1180 mutex_init(&chip->open_mutex); 1181 chip->card = card; 1182 chip->pci = pci; 1183 chip->irq = -1; 1184 err = pcim_iomap_regions(pci, 1 << 0, "ATI IXP MC97"); 1185 if (err < 0) 1186 return err; 1187 chip->addr = pci_resource_start(pci, 0); 1188 chip->remap_addr = pcim_iomap_table(pci)[0]; 1189 1190 if (devm_request_irq(&pci->dev, pci->irq, snd_atiixp_interrupt, 1191 IRQF_SHARED, KBUILD_MODNAME, chip)) { 1192 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1193 return -EBUSY; 1194 } 1195 chip->irq = pci->irq; 1196 card->sync_irq = chip->irq; 1197 card->private_free = snd_atiixp_free; 1198 pci_set_master(pci); 1199 1200 return 0; 1201 } 1202 1203 1204 static int __snd_atiixp_probe(struct pci_dev *pci, 1205 const struct pci_device_id *pci_id) 1206 { 1207 struct snd_card *card; 1208 struct atiixp_modem *chip; 1209 int err; 1210 1211 err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE, 1212 sizeof(*chip), &card); 1213 if (err < 0) 1214 return err; 1215 chip = card->private_data; 1216 1217 strcpy(card->driver, "ATIIXP-MODEM"); 1218 strcpy(card->shortname, "ATI IXP Modem"); 1219 err = snd_atiixp_init(card, pci); 1220 if (err < 0) 1221 return err; 1222 1223 err = snd_atiixp_aclink_reset(chip); 1224 if (err < 0) 1225 return err; 1226 1227 err = snd_atiixp_mixer_new(chip, ac97_clock); 1228 if (err < 0) 1229 return err; 1230 1231 err = snd_atiixp_pcm_new(chip); 1232 if (err < 0) 1233 return err; 1234 1235 snd_atiixp_proc_init(chip); 1236 1237 snd_atiixp_chip_start(chip); 1238 1239 sprintf(card->longname, "%s rev %x at 0x%lx, irq %i", 1240 card->shortname, pci->revision, chip->addr, chip->irq); 1241 1242 err = snd_card_register(card); 1243 if (err < 0) 1244 return err; 1245 1246 pci_set_drvdata(pci, card); 1247 return 0; 1248 } 1249 1250 static int snd_atiixp_probe(struct pci_dev *pci, 1251 const struct pci_device_id *pci_id) 1252 { 1253 return snd_card_free_on_error(&pci->dev, __snd_atiixp_probe(pci, pci_id)); 1254 } 1255 1256 static struct pci_driver atiixp_modem_driver = { 1257 .name = KBUILD_MODNAME, 1258 .id_table = snd_atiixp_ids, 1259 .probe = snd_atiixp_probe, 1260 .driver = { 1261 .pm = SND_ATIIXP_PM_OPS, 1262 }, 1263 }; 1264 1265 module_pci_driver(atiixp_modem_driver); 1266