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 23MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 24MODULE_DESCRIPTION("ATI IXP MC97 controller"); 25MODULE_LICENSE("GPL"); 26 27static int index = -2; /* Exclude the first card */ 28static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 29static int ac97_clock = 48000; 30 31module_param(index, int, 0444); 32MODULE_PARM_DESC(index, "Index value for ATI IXP controller."); 33module_param(id, charp, 0444); 34MODULE_PARM_DESC(id, "ID string for ATI IXP controller."); 35module_param(ac97_clock, int, 0444); 36MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 37 38/* just for backward compatibility */ 39static bool enable; 40module_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 164struct atiixp_modem; 165 166/* 167 * DMA packate descriptor 168 */ 169 170struct 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 */ 180enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */ 181enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */ 182enum { 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 */ 190struct 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 */ 205struct 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 */ 220struct 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 */ 249static 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 255MODULE_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 */ 266static 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 */ 309static 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 */ 368static 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 */ 382static 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 396static 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 426static 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 441static 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 449static 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 */ 464static 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 499static int snd_atiixp_aclink_down(struct atiixp_modem *chip) 500{ 501 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */ 502 // return -EBUSY; 503 atiixp_update(chip, CMD, 504 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET, 505 ATI_REG_CMD_POWERDOWN); 506 return 0; 507} 508 509/* 510 * auto-detection of codecs 511 * 512 * the IXP chip can generate interrupts for the non-existing codecs. 513 * NEW_FRAME interrupt is used to make sure that the interrupt is generated 514 * even if all three codecs are connected. 515 */ 516 517#define ALL_CODEC_NOT_READY \ 518 (ATI_REG_ISR_CODEC0_NOT_READY |\ 519 ATI_REG_ISR_CODEC1_NOT_READY |\ 520 ATI_REG_ISR_CODEC2_NOT_READY) 521#define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME) 522 523static int snd_atiixp_codec_detect(struct atiixp_modem *chip) 524{ 525 int timeout; 526 527 chip->codec_not_ready_bits = 0; 528 atiixp_write(chip, IER, CODEC_CHECK_BITS); 529 /* wait for the interrupts */ 530 timeout = 50; 531 while (timeout-- > 0) { 532 msleep(1); 533 if (chip->codec_not_ready_bits) 534 break; 535 } 536 atiixp_write(chip, IER, 0); /* disable irqs */ 537 538 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) { 539 dev_err(chip->card->dev, "no codec detected!\n"); 540 return -ENXIO; 541 } 542 return 0; 543} 544 545 546/* 547 * enable DMA and irqs 548 */ 549static int snd_atiixp_chip_start(struct atiixp_modem *chip) 550{ 551 unsigned int reg; 552 553 /* set up spdif, enable burst mode */ 554 reg = atiixp_read(chip, CMD); 555 reg |= ATI_REG_CMD_BURST_EN; 556 if(!(reg & ATI_REG_CMD_MODEM_PRESENT)) 557 reg |= ATI_REG_CMD_MODEM_PRESENT; 558 atiixp_write(chip, CMD, reg); 559 560 /* clear all interrupt source */ 561 atiixp_write(chip, ISR, 0xffffffff); 562 /* enable irqs */ 563 atiixp_write(chip, IER, 564 ATI_REG_IER_MODEM_STATUS_EN | 565 ATI_REG_IER_MODEM_IN_XRUN_EN | 566 ATI_REG_IER_MODEM_OUT1_XRUN_EN); 567 return 0; 568} 569 570 571/* 572 * disable DMA and IRQs 573 */ 574static int snd_atiixp_chip_stop(struct atiixp_modem *chip) 575{ 576 /* clear interrupt source */ 577 atiixp_write(chip, ISR, atiixp_read(chip, ISR)); 578 /* disable irqs */ 579 atiixp_write(chip, IER, 0); 580 return 0; 581} 582 583 584/* 585 * PCM section 586 */ 587 588/* 589 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current 590 * position. when SG-buffer is implemented, the offset must be calculated 591 * correctly... 592 */ 593static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream) 594{ 595 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 596 struct snd_pcm_runtime *runtime = substream->runtime; 597 struct atiixp_dma *dma = runtime->private_data; 598 unsigned int curptr; 599 int timeout = 1000; 600 601 while (timeout--) { 602 curptr = readl(chip->remap_addr + dma->ops->dt_cur); 603 if (curptr < dma->buf_addr) 604 continue; 605 curptr -= dma->buf_addr; 606 if (curptr >= dma->buf_bytes) 607 continue; 608 return bytes_to_frames(runtime, curptr); 609 } 610 dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n", 611 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr); 612 return 0; 613} 614 615/* 616 * XRUN detected, and stop the PCM substream 617 */ 618static void snd_atiixp_xrun_dma(struct atiixp_modem *chip, 619 struct atiixp_dma *dma) 620{ 621 if (! dma->substream || ! dma->running) 622 return; 623 dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type); 624 snd_pcm_stop_xrun(dma->substream); 625} 626 627/* 628 * the period ack. update the substream. 629 */ 630static void snd_atiixp_update_dma(struct atiixp_modem *chip, 631 struct atiixp_dma *dma) 632{ 633 if (! dma->substream || ! dma->running) 634 return; 635 snd_pcm_period_elapsed(dma->substream); 636} 637 638/* set BUS_BUSY interrupt bit if any DMA is running */ 639/* call with spinlock held */ 640static void snd_atiixp_check_bus_busy(struct atiixp_modem *chip) 641{ 642 unsigned int bus_busy; 643 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN | 644 ATI_REG_CMD_MODEM_RECEIVE_EN)) 645 bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY; 646 else 647 bus_busy = 0; 648 atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy); 649} 650 651/* common trigger callback 652 * calling the lowlevel callbacks in it 653 */ 654static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 655{ 656 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 657 struct atiixp_dma *dma = substream->runtime->private_data; 658 int err = 0; 659 660 if (snd_BUG_ON(!dma->ops->enable_transfer || 661 !dma->ops->flush_dma)) 662 return -EINVAL; 663 664 spin_lock(&chip->reg_lock); 665 switch(cmd) { 666 case SNDRV_PCM_TRIGGER_START: 667 dma->ops->enable_transfer(chip, 1); 668 dma->running = 1; 669 break; 670 case SNDRV_PCM_TRIGGER_STOP: 671 dma->ops->enable_transfer(chip, 0); 672 dma->running = 0; 673 break; 674 default: 675 err = -EINVAL; 676 break; 677 } 678 if (! err) { 679 snd_atiixp_check_bus_busy(chip); 680 if (cmd == SNDRV_PCM_TRIGGER_STOP) { 681 dma->ops->flush_dma(chip); 682 snd_atiixp_check_bus_busy(chip); 683 } 684 } 685 spin_unlock(&chip->reg_lock); 686 return err; 687} 688 689 690/* 691 * lowlevel callbacks for each DMA type 692 * 693 * every callback is supposed to be called in chip->reg_lock spinlock 694 */ 695 696/* flush FIFO of analog OUT DMA */ 697static void atiixp_out_flush_dma(struct atiixp_modem *chip) 698{ 699 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH); 700} 701 702/* enable/disable analog OUT DMA */ 703static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on) 704{ 705 unsigned int data; 706 data = atiixp_read(chip, CMD); 707 if (on) { 708 if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN) 709 return; 710 atiixp_out_flush_dma(chip); 711 data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN; 712 } else 713 data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN; 714 atiixp_write(chip, CMD, data); 715} 716 717/* start/stop transfer over OUT DMA */ 718static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on) 719{ 720 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN, 721 on ? ATI_REG_CMD_MODEM_SEND1_EN : 0); 722} 723 724/* enable/disable analog IN DMA */ 725static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on) 726{ 727 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN, 728 on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0); 729} 730 731/* start/stop analog IN DMA */ 732static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on) 733{ 734 if (on) { 735 unsigned int data = atiixp_read(chip, CMD); 736 if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) { 737 data |= ATI_REG_CMD_MODEM_RECEIVE_EN; 738 atiixp_write(chip, CMD, data); 739 } 740 } else 741 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0); 742} 743 744/* flush FIFO of analog IN DMA */ 745static void atiixp_in_flush_dma(struct atiixp_modem *chip) 746{ 747 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH); 748} 749 750/* set up slots and formats for analog OUT */ 751static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream) 752{ 753 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 754 unsigned int data; 755 756 spin_lock_irq(&chip->reg_lock); 757 /* set output threshold */ 758 data = atiixp_read(chip, MODEM_OUT_FIFO); 759 data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK; 760 data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT; 761 atiixp_write(chip, MODEM_OUT_FIFO, data); 762 spin_unlock_irq(&chip->reg_lock); 763 return 0; 764} 765 766/* set up slots and formats for analog IN */ 767static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream) 768{ 769 return 0; 770} 771 772/* 773 * hw_params - allocate the buffer and set up buffer descriptors 774 */ 775static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream, 776 struct snd_pcm_hw_params *hw_params) 777{ 778 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 779 struct atiixp_dma *dma = substream->runtime->private_data; 780 int err; 781 int i; 782 783 dma->buf_addr = substream->runtime->dma_addr; 784 dma->buf_bytes = params_buffer_bytes(hw_params); 785 786 err = atiixp_build_dma_packets(chip, dma, substream, 787 params_periods(hw_params), 788 params_period_bytes(hw_params)); 789 if (err < 0) 790 return err; 791 792 /* set up modem rate */ 793 for (i = 0; i < NUM_ATI_CODECS; i++) { 794 if (! chip->ac97[i]) 795 continue; 796 snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params)); 797 snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0); 798 } 799 800 return err; 801} 802 803static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream) 804{ 805 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 806 struct atiixp_dma *dma = substream->runtime->private_data; 807 808 atiixp_clear_dma_packets(chip, dma, substream); 809 return 0; 810} 811 812 813/* 814 * pcm hardware definition, identical for all DMA types 815 */ 816static const struct snd_pcm_hardware snd_atiixp_pcm_hw = 817{ 818 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 819 SNDRV_PCM_INFO_BLOCK_TRANSFER | 820 SNDRV_PCM_INFO_MMAP_VALID), 821 .formats = SNDRV_PCM_FMTBIT_S16_LE, 822 .rates = (SNDRV_PCM_RATE_8000 | 823 SNDRV_PCM_RATE_16000 | 824 SNDRV_PCM_RATE_KNOT), 825 .rate_min = 8000, 826 .rate_max = 16000, 827 .channels_min = 2, 828 .channels_max = 2, 829 .buffer_bytes_max = 256 * 1024, 830 .period_bytes_min = 32, 831 .period_bytes_max = 128 * 1024, 832 .periods_min = 2, 833 .periods_max = ATI_MAX_DESCRIPTORS, 834}; 835 836static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream, 837 struct atiixp_dma *dma, int pcm_type) 838{ 839 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 840 struct snd_pcm_runtime *runtime = substream->runtime; 841 int err; 842 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 843 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { 844 .count = ARRAY_SIZE(rates), 845 .list = rates, 846 .mask = 0, 847 }; 848 849 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 850 return -EINVAL; 851 852 if (dma->opened) 853 return -EBUSY; 854 dma->substream = substream; 855 runtime->hw = snd_atiixp_pcm_hw; 856 dma->ac97_pcm_type = pcm_type; 857 err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 858 &hw_constraints_rates); 859 if (err < 0) 860 return err; 861 err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); 862 if (err < 0) 863 return err; 864 runtime->private_data = dma; 865 866 /* enable DMA bits */ 867 spin_lock_irq(&chip->reg_lock); 868 dma->ops->enable_dma(chip, 1); 869 spin_unlock_irq(&chip->reg_lock); 870 dma->opened = 1; 871 872 return 0; 873} 874 875static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream, 876 struct atiixp_dma *dma) 877{ 878 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 879 /* disable DMA bits */ 880 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 881 return -EINVAL; 882 spin_lock_irq(&chip->reg_lock); 883 dma->ops->enable_dma(chip, 0); 884 spin_unlock_irq(&chip->reg_lock); 885 dma->substream = NULL; 886 dma->opened = 0; 887 return 0; 888} 889 890/* 891 */ 892static int snd_atiixp_playback_open(struct snd_pcm_substream *substream) 893{ 894 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 895 int err; 896 897 mutex_lock(&chip->open_mutex); 898 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0); 899 mutex_unlock(&chip->open_mutex); 900 if (err < 0) 901 return err; 902 return 0; 903} 904 905static int snd_atiixp_playback_close(struct snd_pcm_substream *substream) 906{ 907 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 908 int err; 909 mutex_lock(&chip->open_mutex); 910 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]); 911 mutex_unlock(&chip->open_mutex); 912 return err; 913} 914 915static int snd_atiixp_capture_open(struct snd_pcm_substream *substream) 916{ 917 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 918 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1); 919} 920 921static int snd_atiixp_capture_close(struct snd_pcm_substream *substream) 922{ 923 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 924 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]); 925} 926 927 928/* AC97 playback */ 929static const struct snd_pcm_ops snd_atiixp_playback_ops = { 930 .open = snd_atiixp_playback_open, 931 .close = snd_atiixp_playback_close, 932 .hw_params = snd_atiixp_pcm_hw_params, 933 .hw_free = snd_atiixp_pcm_hw_free, 934 .prepare = snd_atiixp_playback_prepare, 935 .trigger = snd_atiixp_pcm_trigger, 936 .pointer = snd_atiixp_pcm_pointer, 937}; 938 939/* AC97 capture */ 940static const struct snd_pcm_ops snd_atiixp_capture_ops = { 941 .open = snd_atiixp_capture_open, 942 .close = snd_atiixp_capture_close, 943 .hw_params = snd_atiixp_pcm_hw_params, 944 .hw_free = snd_atiixp_pcm_hw_free, 945 .prepare = snd_atiixp_capture_prepare, 946 .trigger = snd_atiixp_pcm_trigger, 947 .pointer = snd_atiixp_pcm_pointer, 948}; 949 950static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = { 951 .type = ATI_DMA_PLAYBACK, 952 .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR, 953 .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR, 954 .enable_dma = atiixp_out_enable_dma, 955 .enable_transfer = atiixp_out_enable_transfer, 956 .flush_dma = atiixp_out_flush_dma, 957}; 958 959static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = { 960 .type = ATI_DMA_CAPTURE, 961 .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR, 962 .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR, 963 .enable_dma = atiixp_in_enable_dma, 964 .enable_transfer = atiixp_in_enable_transfer, 965 .flush_dma = atiixp_in_flush_dma, 966}; 967 968static int snd_atiixp_pcm_new(struct atiixp_modem *chip) 969{ 970 struct snd_pcm *pcm; 971 int err; 972 973 /* initialize constants */ 974 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops; 975 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops; 976 977 /* PCM #0: analog I/O */ 978 err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm); 979 if (err < 0) 980 return err; 981 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops); 982 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops); 983 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 984 pcm->private_data = chip; 985 strcpy(pcm->name, "ATI IXP MC97"); 986 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm; 987 988 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, 989 &chip->pci->dev, 64*1024, 128*1024); 990 991 return 0; 992} 993 994 995 996/* 997 * interrupt handler 998 */ 999static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id) 1000{ 1001 struct atiixp_modem *chip = dev_id; 1002 unsigned int status; 1003 1004 status = atiixp_read(chip, ISR); 1005 1006 if (! status) 1007 return IRQ_NONE; 1008 1009 /* process audio DMA */ 1010 if (status & ATI_REG_ISR_MODEM_OUT1_XRUN) 1011 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1012 else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS) 1013 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1014 if (status & ATI_REG_ISR_MODEM_IN_XRUN) 1015 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1016 else if (status & ATI_REG_ISR_MODEM_IN_STATUS) 1017 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1018 1019 /* for codec detection */ 1020 if (status & CODEC_CHECK_BITS) { 1021 unsigned int detected; 1022 detected = status & CODEC_CHECK_BITS; 1023 spin_lock(&chip->reg_lock); 1024 chip->codec_not_ready_bits |= detected; 1025 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */ 1026 spin_unlock(&chip->reg_lock); 1027 } 1028 1029 /* ack */ 1030 atiixp_write(chip, ISR, status); 1031 1032 return IRQ_HANDLED; 1033} 1034 1035 1036/* 1037 * ac97 mixer section 1038 */ 1039 1040static int snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock) 1041{ 1042 struct snd_ac97_bus *pbus; 1043 struct snd_ac97_template ac97; 1044 int i, err; 1045 int codec_count; 1046 static const struct snd_ac97_bus_ops ops = { 1047 .write = snd_atiixp_ac97_write, 1048 .read = snd_atiixp_ac97_read, 1049 }; 1050 static const unsigned int codec_skip[NUM_ATI_CODECS] = { 1051 ATI_REG_ISR_CODEC0_NOT_READY, 1052 ATI_REG_ISR_CODEC1_NOT_READY, 1053 ATI_REG_ISR_CODEC2_NOT_READY, 1054 }; 1055 1056 if (snd_atiixp_codec_detect(chip) < 0) 1057 return -ENXIO; 1058 1059 err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus); 1060 if (err < 0) 1061 return err; 1062 pbus->clock = clock; 1063 chip->ac97_bus = pbus; 1064 1065 codec_count = 0; 1066 for (i = 0; i < NUM_ATI_CODECS; i++) { 1067 if (chip->codec_not_ready_bits & codec_skip[i]) 1068 continue; 1069 memset(&ac97, 0, sizeof(ac97)); 1070 ac97.private_data = chip; 1071 ac97.pci = chip->pci; 1072 ac97.num = i; 1073 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 1074 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i]); 1075 if (err < 0) { 1076 chip->ac97[i] = NULL; /* to be sure */ 1077 dev_dbg(chip->card->dev, 1078 "codec %d not available for modem\n", i); 1079 continue; 1080 } 1081 codec_count++; 1082 } 1083 1084 if (! codec_count) { 1085 dev_err(chip->card->dev, "no codec available\n"); 1086 return -ENODEV; 1087 } 1088 1089 /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */ 1090 1091 return 0; 1092} 1093 1094 1095/* 1096 * power management 1097 */ 1098static int snd_atiixp_suspend(struct device *dev) 1099{ 1100 struct snd_card *card = dev_get_drvdata(dev); 1101 struct atiixp_modem *chip = card->private_data; 1102 int i; 1103 1104 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1105 for (i = 0; i < NUM_ATI_CODECS; i++) 1106 snd_ac97_suspend(chip->ac97[i]); 1107 snd_atiixp_aclink_down(chip); 1108 snd_atiixp_chip_stop(chip); 1109 return 0; 1110} 1111 1112static int snd_atiixp_resume(struct device *dev) 1113{ 1114 struct snd_card *card = dev_get_drvdata(dev); 1115 struct atiixp_modem *chip = card->private_data; 1116 int i; 1117 1118 snd_atiixp_aclink_reset(chip); 1119 snd_atiixp_chip_start(chip); 1120 1121 for (i = 0; i < NUM_ATI_CODECS; i++) 1122 snd_ac97_resume(chip->ac97[i]); 1123 1124 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1125 return 0; 1126} 1127 1128static DEFINE_SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume); 1129 1130/* 1131 * proc interface for register dump 1132 */ 1133 1134static void snd_atiixp_proc_read(struct snd_info_entry *entry, 1135 struct snd_info_buffer *buffer) 1136{ 1137 struct atiixp_modem *chip = entry->private_data; 1138 int i; 1139 1140 for (i = 0; i < 256; i += 4) 1141 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i)); 1142} 1143 1144static void snd_atiixp_proc_init(struct atiixp_modem *chip) 1145{ 1146 snd_card_ro_proc_new(chip->card, "atiixp-modem", chip, 1147 snd_atiixp_proc_read); 1148} 1149 1150 1151/* 1152 * destructor 1153 */ 1154 1155static void snd_atiixp_free(struct snd_card *card) 1156{ 1157 snd_atiixp_chip_stop(card->private_data); 1158} 1159 1160/* 1161 * constructor for chip instance 1162 */ 1163static int snd_atiixp_init(struct snd_card *card, struct pci_dev *pci) 1164{ 1165 struct atiixp_modem *chip = card->private_data; 1166 int err; 1167 1168 err = pcim_enable_device(pci); 1169 if (err < 0) 1170 return err; 1171 1172 spin_lock_init(&chip->reg_lock); 1173 mutex_init(&chip->open_mutex); 1174 chip->card = card; 1175 chip->pci = pci; 1176 chip->irq = -1; 1177 err = pcim_iomap_regions(pci, 1 << 0, "ATI IXP MC97"); 1178 if (err < 0) 1179 return err; 1180 chip->addr = pci_resource_start(pci, 0); 1181 chip->remap_addr = pcim_iomap_table(pci)[0]; 1182 1183 if (devm_request_irq(&pci->dev, pci->irq, snd_atiixp_interrupt, 1184 IRQF_SHARED, KBUILD_MODNAME, chip)) { 1185 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1186 return -EBUSY; 1187 } 1188 chip->irq = pci->irq; 1189 card->sync_irq = chip->irq; 1190 card->private_free = snd_atiixp_free; 1191 pci_set_master(pci); 1192 1193 return 0; 1194} 1195 1196 1197static int __snd_atiixp_probe(struct pci_dev *pci, 1198 const struct pci_device_id *pci_id) 1199{ 1200 struct snd_card *card; 1201 struct atiixp_modem *chip; 1202 int err; 1203 1204 err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE, 1205 sizeof(*chip), &card); 1206 if (err < 0) 1207 return err; 1208 chip = card->private_data; 1209 1210 strcpy(card->driver, "ATIIXP-MODEM"); 1211 strcpy(card->shortname, "ATI IXP Modem"); 1212 err = snd_atiixp_init(card, pci); 1213 if (err < 0) 1214 return err; 1215 1216 err = snd_atiixp_aclink_reset(chip); 1217 if (err < 0) 1218 return err; 1219 1220 err = snd_atiixp_mixer_new(chip, ac97_clock); 1221 if (err < 0) 1222 return err; 1223 1224 err = snd_atiixp_pcm_new(chip); 1225 if (err < 0) 1226 return err; 1227 1228 snd_atiixp_proc_init(chip); 1229 1230 snd_atiixp_chip_start(chip); 1231 1232 sprintf(card->longname, "%s rev %x at 0x%lx, irq %i", 1233 card->shortname, pci->revision, chip->addr, chip->irq); 1234 1235 err = snd_card_register(card); 1236 if (err < 0) 1237 return err; 1238 1239 pci_set_drvdata(pci, card); 1240 return 0; 1241} 1242 1243static int snd_atiixp_probe(struct pci_dev *pci, 1244 const struct pci_device_id *pci_id) 1245{ 1246 return snd_card_free_on_error(&pci->dev, __snd_atiixp_probe(pci, pci_id)); 1247} 1248 1249static struct pci_driver atiixp_modem_driver = { 1250 .name = KBUILD_MODNAME, 1251 .id_table = snd_atiixp_ids, 1252 .probe = snd_atiixp_probe, 1253 .driver = { 1254 .pm = &snd_atiixp_pm, 1255 }, 1256}; 1257 1258module_pci_driver(atiixp_modem_driver); 1259