1 /* 2 * ALSA driver for ATI IXP 150/200/250 AC97 modem controllers 3 * 4 * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 * 20 */ 21 22 #include <linux/io.h> 23 #include <linux/delay.h> 24 #include <linux/interrupt.h> 25 #include <linux/init.h> 26 #include <linux/pci.h> 27 #include <linux/slab.h> 28 #include <linux/module.h> 29 #include <linux/mutex.h> 30 #include <sound/core.h> 31 #include <sound/pcm.h> 32 #include <sound/pcm_params.h> 33 #include <sound/info.h> 34 #include <sound/ac97_codec.h> 35 #include <sound/initval.h> 36 37 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 38 MODULE_DESCRIPTION("ATI IXP MC97 controller"); 39 MODULE_LICENSE("GPL"); 40 MODULE_SUPPORTED_DEVICE("{{ATI,IXP150/200/250}}"); 41 42 static int index = -2; /* Exclude the first card */ 43 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 44 static int ac97_clock = 48000; 45 46 module_param(index, int, 0444); 47 MODULE_PARM_DESC(index, "Index value for ATI IXP controller."); 48 module_param(id, charp, 0444); 49 MODULE_PARM_DESC(id, "ID string for ATI IXP controller."); 50 module_param(ac97_clock, int, 0444); 51 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); 52 53 /* just for backward compatibility */ 54 static bool enable; 55 module_param(enable, bool, 0444); 56 57 58 /* 59 */ 60 61 #define ATI_REG_ISR 0x00 /* interrupt source */ 62 #define ATI_REG_ISR_MODEM_IN_XRUN (1U<<0) 63 #define ATI_REG_ISR_MODEM_IN_STATUS (1U<<1) 64 #define ATI_REG_ISR_MODEM_OUT1_XRUN (1U<<2) 65 #define ATI_REG_ISR_MODEM_OUT1_STATUS (1U<<3) 66 #define ATI_REG_ISR_MODEM_OUT2_XRUN (1U<<4) 67 #define ATI_REG_ISR_MODEM_OUT2_STATUS (1U<<5) 68 #define ATI_REG_ISR_MODEM_OUT3_XRUN (1U<<6) 69 #define ATI_REG_ISR_MODEM_OUT3_STATUS (1U<<7) 70 #define ATI_REG_ISR_PHYS_INTR (1U<<8) 71 #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9) 72 #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10) 73 #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11) 74 #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12) 75 #define ATI_REG_ISR_NEW_FRAME (1U<<13) 76 #define ATI_REG_ISR_MODEM_GPIO_DATA (1U<<14) 77 78 #define ATI_REG_IER 0x04 /* interrupt enable */ 79 #define ATI_REG_IER_MODEM_IN_XRUN_EN (1U<<0) 80 #define ATI_REG_IER_MODEM_STATUS_EN (1U<<1) 81 #define ATI_REG_IER_MODEM_OUT1_XRUN_EN (1U<<2) 82 #define ATI_REG_IER_MODEM_OUT2_XRUN_EN (1U<<4) 83 #define ATI_REG_IER_MODEM_OUT3_XRUN_EN (1U<<6) 84 #define ATI_REG_IER_PHYS_INTR_EN (1U<<8) 85 #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9) 86 #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10) 87 #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11) 88 #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12) 89 #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */ 90 #define ATI_REG_IER_MODEM_GPIO_DATA_EN (1U<<14) /* (WO) modem is running */ 91 #define ATI_REG_IER_MODEM_SET_BUS_BUSY (1U<<15) 92 93 #define ATI_REG_CMD 0x08 /* command */ 94 #define ATI_REG_CMD_POWERDOWN (1U<<0) 95 #define ATI_REG_CMD_MODEM_RECEIVE_EN (1U<<1) /* modem only */ 96 #define ATI_REG_CMD_MODEM_SEND1_EN (1U<<2) /* modem only */ 97 #define ATI_REG_CMD_MODEM_SEND2_EN (1U<<3) /* modem only */ 98 #define ATI_REG_CMD_MODEM_SEND3_EN (1U<<4) /* modem only */ 99 #define ATI_REG_CMD_MODEM_STATUS_MEM (1U<<5) /* modem only */ 100 #define ATI_REG_CMD_MODEM_IN_DMA_EN (1U<<8) /* modem only */ 101 #define ATI_REG_CMD_MODEM_OUT_DMA1_EN (1U<<9) /* modem only */ 102 #define ATI_REG_CMD_MODEM_OUT_DMA2_EN (1U<<10) /* modem only */ 103 #define ATI_REG_CMD_MODEM_OUT_DMA3_EN (1U<<11) /* modem only */ 104 #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20) 105 #define ATI_REG_CMD_MODEM_GPIO_THRU_DMA (1U<<22) /* modem only */ 106 #define ATI_REG_CMD_LOOPBACK_EN (1U<<23) 107 #define ATI_REG_CMD_PACKED_DIS (1U<<24) 108 #define ATI_REG_CMD_BURST_EN (1U<<25) 109 #define ATI_REG_CMD_PANIC_EN (1U<<26) 110 #define ATI_REG_CMD_MODEM_PRESENT (1U<<27) 111 #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28) 112 #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29) 113 #define ATI_REG_CMD_AC_SYNC (1U<<30) 114 #define ATI_REG_CMD_AC_RESET (1U<<31) 115 116 #define ATI_REG_PHYS_OUT_ADDR 0x0c 117 #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0) 118 #define ATI_REG_PHYS_OUT_RW (1U<<2) 119 #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8) 120 #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9 121 #define ATI_REG_PHYS_OUT_DATA_SHIFT 16 122 123 #define ATI_REG_PHYS_IN_ADDR 0x10 124 #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8) 125 #define ATI_REG_PHYS_IN_ADDR_SHIFT 9 126 #define ATI_REG_PHYS_IN_DATA_SHIFT 16 127 128 #define ATI_REG_SLOTREQ 0x14 129 130 #define ATI_REG_COUNTER 0x18 131 #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */ 132 #define ATI_REG_COUNTER_BITCLOCK (31U<<8) 133 134 #define ATI_REG_IN_FIFO_THRESHOLD 0x1c 135 136 #define ATI_REG_MODEM_IN_DMA_LINKPTR 0x20 137 #define ATI_REG_MODEM_IN_DMA_DT_START 0x24 /* RO */ 138 #define ATI_REG_MODEM_IN_DMA_DT_NEXT 0x28 /* RO */ 139 #define ATI_REG_MODEM_IN_DMA_DT_CUR 0x2c /* RO */ 140 #define ATI_REG_MODEM_IN_DMA_DT_SIZE 0x30 141 #define ATI_REG_MODEM_OUT_FIFO 0x34 /* output threshold */ 142 #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK (0xf<<16) 143 #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT 16 144 #define ATI_REG_MODEM_OUT_DMA1_LINKPTR 0x38 145 #define ATI_REG_MODEM_OUT_DMA2_LINKPTR 0x3c 146 #define ATI_REG_MODEM_OUT_DMA3_LINKPTR 0x40 147 #define ATI_REG_MODEM_OUT_DMA1_DT_START 0x44 148 #define ATI_REG_MODEM_OUT_DMA1_DT_NEXT 0x48 149 #define ATI_REG_MODEM_OUT_DMA1_DT_CUR 0x4c 150 #define ATI_REG_MODEM_OUT_DMA2_DT_START 0x50 151 #define ATI_REG_MODEM_OUT_DMA2_DT_NEXT 0x54 152 #define ATI_REG_MODEM_OUT_DMA2_DT_CUR 0x58 153 #define ATI_REG_MODEM_OUT_DMA3_DT_START 0x5c 154 #define ATI_REG_MODEM_OUT_DMA3_DT_NEXT 0x60 155 #define ATI_REG_MODEM_OUT_DMA3_DT_CUR 0x64 156 #define ATI_REG_MODEM_OUT_DMA12_DT_SIZE 0x68 157 #define ATI_REG_MODEM_OUT_DMA3_DT_SIZE 0x6c 158 #define ATI_REG_MODEM_OUT_FIFO_USED 0x70 159 #define ATI_REG_MODEM_OUT_GPIO 0x74 160 #define ATI_REG_MODEM_OUT_GPIO_EN 1 161 #define ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT 5 162 #define ATI_REG_MODEM_IN_GPIO 0x78 163 164 #define ATI_REG_MODEM_MIRROR 0x7c 165 #define ATI_REG_AUDIO_MIRROR 0x80 166 167 #define ATI_REG_MODEM_FIFO_FLUSH 0x88 168 #define ATI_REG_MODEM_FIFO_OUT1_FLUSH (1U<<0) 169 #define ATI_REG_MODEM_FIFO_OUT2_FLUSH (1U<<1) 170 #define ATI_REG_MODEM_FIFO_OUT3_FLUSH (1U<<2) 171 #define ATI_REG_MODEM_FIFO_IN_FLUSH (1U<<3) 172 173 /* LINKPTR */ 174 #define ATI_REG_LINKPTR_EN (1U<<0) 175 176 #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */ 177 178 179 struct atiixp_modem; 180 181 /* 182 * DMA packate descriptor 183 */ 184 185 struct atiixp_dma_desc { 186 __le32 addr; /* DMA buffer address */ 187 u16 status; /* status bits */ 188 u16 size; /* size of the packet in dwords */ 189 __le32 next; /* address of the next packet descriptor */ 190 }; 191 192 /* 193 * stream enum 194 */ 195 enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */ 196 enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */ 197 enum { ATI_PCMDEV_ANALOG, NUM_ATI_PCMDEVS }; /* pcm devices */ 198 199 #define NUM_ATI_CODECS 3 200 201 202 /* 203 * constants and callbacks for each DMA type 204 */ 205 struct atiixp_dma_ops { 206 int type; /* ATI_DMA_XXX */ 207 unsigned int llp_offset; /* LINKPTR offset */ 208 unsigned int dt_cur; /* DT_CUR offset */ 209 /* called from open callback */ 210 void (*enable_dma)(struct atiixp_modem *chip, int on); 211 /* called from trigger (START/STOP) */ 212 void (*enable_transfer)(struct atiixp_modem *chip, int on); 213 /* called from trigger (STOP only) */ 214 void (*flush_dma)(struct atiixp_modem *chip); 215 }; 216 217 /* 218 * DMA stream 219 */ 220 struct atiixp_dma { 221 const struct atiixp_dma_ops *ops; 222 struct snd_dma_buffer desc_buf; 223 struct snd_pcm_substream *substream; /* assigned PCM substream */ 224 unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */ 225 unsigned int period_bytes, periods; 226 int opened; 227 int running; 228 int pcm_open_flag; 229 int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */ 230 }; 231 232 /* 233 * ATI IXP chip 234 */ 235 struct atiixp_modem { 236 struct snd_card *card; 237 struct pci_dev *pci; 238 239 struct resource *res; /* memory i/o */ 240 unsigned long addr; 241 void __iomem *remap_addr; 242 int irq; 243 244 struct snd_ac97_bus *ac97_bus; 245 struct snd_ac97 *ac97[NUM_ATI_CODECS]; 246 247 spinlock_t reg_lock; 248 249 struct atiixp_dma dmas[NUM_ATI_DMAS]; 250 struct ac97_pcm *pcms[NUM_ATI_PCMS]; 251 struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS]; 252 253 int max_channels; /* max. channels for PCM out */ 254 255 unsigned int codec_not_ready_bits; /* for codec detection */ 256 257 int spdif_over_aclink; /* passed from the module option */ 258 struct mutex open_mutex; /* playback open mutex */ 259 }; 260 261 262 /* 263 */ 264 static const struct pci_device_id snd_atiixp_ids[] = { 265 { PCI_VDEVICE(ATI, 0x434d), 0 }, /* SB200 */ 266 { PCI_VDEVICE(ATI, 0x4378), 0 }, /* SB400 */ 267 { 0, } 268 }; 269 270 MODULE_DEVICE_TABLE(pci, snd_atiixp_ids); 271 272 273 /* 274 * lowlevel functions 275 */ 276 277 /* 278 * update the bits of the given register. 279 * return 1 if the bits changed. 280 */ 281 static int snd_atiixp_update_bits(struct atiixp_modem *chip, unsigned int reg, 282 unsigned int mask, unsigned int value) 283 { 284 void __iomem *addr = chip->remap_addr + reg; 285 unsigned int data, old_data; 286 old_data = data = readl(addr); 287 data &= ~mask; 288 data |= value; 289 if (old_data == data) 290 return 0; 291 writel(data, addr); 292 return 1; 293 } 294 295 /* 296 * macros for easy use 297 */ 298 #define atiixp_write(chip,reg,value) \ 299 writel(value, chip->remap_addr + ATI_REG_##reg) 300 #define atiixp_read(chip,reg) \ 301 readl(chip->remap_addr + ATI_REG_##reg) 302 #define atiixp_update(chip,reg,mask,val) \ 303 snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val) 304 305 /* 306 * handling DMA packets 307 * 308 * we allocate a linear buffer for the DMA, and split it to each packet. 309 * in a future version, a scatter-gather buffer should be implemented. 310 */ 311 312 #define ATI_DESC_LIST_SIZE \ 313 PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc)) 314 315 /* 316 * build packets ring for the given buffer size. 317 * 318 * IXP handles the buffer descriptors, which are connected as a linked 319 * list. although we can change the list dynamically, in this version, 320 * a static RING of buffer descriptors is used. 321 * 322 * the ring is built in this function, and is set up to the hardware. 323 */ 324 static int atiixp_build_dma_packets(struct atiixp_modem *chip, 325 struct atiixp_dma *dma, 326 struct snd_pcm_substream *substream, 327 unsigned int periods, 328 unsigned int period_bytes) 329 { 330 unsigned int i; 331 u32 addr, desc_addr; 332 unsigned long flags; 333 334 if (periods > ATI_MAX_DESCRIPTORS) 335 return -ENOMEM; 336 337 if (dma->desc_buf.area == NULL) { 338 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), 339 ATI_DESC_LIST_SIZE, &dma->desc_buf) < 0) 340 return -ENOMEM; 341 dma->period_bytes = dma->periods = 0; /* clear */ 342 } 343 344 if (dma->periods == periods && dma->period_bytes == period_bytes) 345 return 0; 346 347 /* reset DMA before changing the descriptor table */ 348 spin_lock_irqsave(&chip->reg_lock, flags); 349 writel(0, chip->remap_addr + dma->ops->llp_offset); 350 dma->ops->enable_dma(chip, 0); 351 dma->ops->enable_dma(chip, 1); 352 spin_unlock_irqrestore(&chip->reg_lock, flags); 353 354 /* fill the entries */ 355 addr = (u32)substream->runtime->dma_addr; 356 desc_addr = (u32)dma->desc_buf.addr; 357 for (i = 0; i < periods; i++) { 358 struct atiixp_dma_desc *desc; 359 desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i]; 360 desc->addr = cpu_to_le32(addr); 361 desc->status = 0; 362 desc->size = period_bytes >> 2; /* in dwords */ 363 desc_addr += sizeof(struct atiixp_dma_desc); 364 if (i == periods - 1) 365 desc->next = cpu_to_le32((u32)dma->desc_buf.addr); 366 else 367 desc->next = cpu_to_le32(desc_addr); 368 addr += period_bytes; 369 } 370 371 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN, 372 chip->remap_addr + dma->ops->llp_offset); 373 374 dma->period_bytes = period_bytes; 375 dma->periods = periods; 376 377 return 0; 378 } 379 380 /* 381 * remove the ring buffer and release it if assigned 382 */ 383 static void atiixp_clear_dma_packets(struct atiixp_modem *chip, 384 struct atiixp_dma *dma, 385 struct snd_pcm_substream *substream) 386 { 387 if (dma->desc_buf.area) { 388 writel(0, chip->remap_addr + dma->ops->llp_offset); 389 snd_dma_free_pages(&dma->desc_buf); 390 dma->desc_buf.area = NULL; 391 } 392 } 393 394 /* 395 * AC97 interface 396 */ 397 static int snd_atiixp_acquire_codec(struct atiixp_modem *chip) 398 { 399 int timeout = 1000; 400 401 while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) { 402 if (! timeout--) { 403 dev_warn(chip->card->dev, "codec acquire timeout\n"); 404 return -EBUSY; 405 } 406 udelay(1); 407 } 408 return 0; 409 } 410 411 static unsigned short snd_atiixp_codec_read(struct atiixp_modem *chip, 412 unsigned short codec, 413 unsigned short reg) 414 { 415 unsigned int data; 416 int timeout; 417 418 if (snd_atiixp_acquire_codec(chip) < 0) 419 return 0xffff; 420 data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | 421 ATI_REG_PHYS_OUT_ADDR_EN | 422 ATI_REG_PHYS_OUT_RW | 423 codec; 424 atiixp_write(chip, PHYS_OUT_ADDR, data); 425 if (snd_atiixp_acquire_codec(chip) < 0) 426 return 0xffff; 427 timeout = 1000; 428 do { 429 data = atiixp_read(chip, PHYS_IN_ADDR); 430 if (data & ATI_REG_PHYS_IN_READ_FLAG) 431 return data >> ATI_REG_PHYS_IN_DATA_SHIFT; 432 udelay(1); 433 } while (--timeout); 434 /* time out may happen during reset */ 435 if (reg < 0x7c) 436 dev_warn(chip->card->dev, "codec read timeout (reg %x)\n", reg); 437 return 0xffff; 438 } 439 440 441 static void snd_atiixp_codec_write(struct atiixp_modem *chip, 442 unsigned short codec, 443 unsigned short reg, unsigned short val) 444 { 445 unsigned int data; 446 447 if (snd_atiixp_acquire_codec(chip) < 0) 448 return; 449 data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) | 450 ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | 451 ATI_REG_PHYS_OUT_ADDR_EN | codec; 452 atiixp_write(chip, PHYS_OUT_ADDR, data); 453 } 454 455 456 static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97, 457 unsigned short reg) 458 { 459 struct atiixp_modem *chip = ac97->private_data; 460 return snd_atiixp_codec_read(chip, ac97->num, reg); 461 462 } 463 464 static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg, 465 unsigned short val) 466 { 467 struct atiixp_modem *chip = ac97->private_data; 468 if (reg == AC97_GPIO_STATUS) { 469 atiixp_write(chip, MODEM_OUT_GPIO, 470 (val << ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT) | ATI_REG_MODEM_OUT_GPIO_EN); 471 return; 472 } 473 snd_atiixp_codec_write(chip, ac97->num, reg, val); 474 } 475 476 /* 477 * reset AC link 478 */ 479 static int snd_atiixp_aclink_reset(struct atiixp_modem *chip) 480 { 481 int timeout; 482 483 /* reset powerdoewn */ 484 if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0)) 485 udelay(10); 486 487 /* perform a software reset */ 488 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET); 489 atiixp_read(chip, CMD); 490 udelay(10); 491 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0); 492 493 timeout = 10; 494 while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) { 495 /* do a hard reset */ 496 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET, 497 ATI_REG_CMD_AC_SYNC); 498 atiixp_read(chip, CMD); 499 msleep(1); 500 atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET); 501 if (!--timeout) { 502 dev_err(chip->card->dev, "codec reset timeout\n"); 503 break; 504 } 505 } 506 507 /* deassert RESET and assert SYNC to make sure */ 508 atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET, 509 ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET); 510 511 return 0; 512 } 513 514 #ifdef CONFIG_PM_SLEEP 515 static int snd_atiixp_aclink_down(struct atiixp_modem *chip) 516 { 517 // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */ 518 // return -EBUSY; 519 atiixp_update(chip, CMD, 520 ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET, 521 ATI_REG_CMD_POWERDOWN); 522 return 0; 523 } 524 #endif 525 526 /* 527 * auto-detection of codecs 528 * 529 * the IXP chip can generate interrupts for the non-existing codecs. 530 * NEW_FRAME interrupt is used to make sure that the interrupt is generated 531 * even if all three codecs are connected. 532 */ 533 534 #define ALL_CODEC_NOT_READY \ 535 (ATI_REG_ISR_CODEC0_NOT_READY |\ 536 ATI_REG_ISR_CODEC1_NOT_READY |\ 537 ATI_REG_ISR_CODEC2_NOT_READY) 538 #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME) 539 540 static int snd_atiixp_codec_detect(struct atiixp_modem *chip) 541 { 542 int timeout; 543 544 chip->codec_not_ready_bits = 0; 545 atiixp_write(chip, IER, CODEC_CHECK_BITS); 546 /* wait for the interrupts */ 547 timeout = 50; 548 while (timeout-- > 0) { 549 msleep(1); 550 if (chip->codec_not_ready_bits) 551 break; 552 } 553 atiixp_write(chip, IER, 0); /* disable irqs */ 554 555 if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) { 556 dev_err(chip->card->dev, "no codec detected!\n"); 557 return -ENXIO; 558 } 559 return 0; 560 } 561 562 563 /* 564 * enable DMA and irqs 565 */ 566 static int snd_atiixp_chip_start(struct atiixp_modem *chip) 567 { 568 unsigned int reg; 569 570 /* set up spdif, enable burst mode */ 571 reg = atiixp_read(chip, CMD); 572 reg |= ATI_REG_CMD_BURST_EN; 573 if(!(reg & ATI_REG_CMD_MODEM_PRESENT)) 574 reg |= ATI_REG_CMD_MODEM_PRESENT; 575 atiixp_write(chip, CMD, reg); 576 577 /* clear all interrupt source */ 578 atiixp_write(chip, ISR, 0xffffffff); 579 /* enable irqs */ 580 atiixp_write(chip, IER, 581 ATI_REG_IER_MODEM_STATUS_EN | 582 ATI_REG_IER_MODEM_IN_XRUN_EN | 583 ATI_REG_IER_MODEM_OUT1_XRUN_EN); 584 return 0; 585 } 586 587 588 /* 589 * disable DMA and IRQs 590 */ 591 static int snd_atiixp_chip_stop(struct atiixp_modem *chip) 592 { 593 /* clear interrupt source */ 594 atiixp_write(chip, ISR, atiixp_read(chip, ISR)); 595 /* disable irqs */ 596 atiixp_write(chip, IER, 0); 597 return 0; 598 } 599 600 601 /* 602 * PCM section 603 */ 604 605 /* 606 * pointer callback simplly reads XXX_DMA_DT_CUR register as the current 607 * position. when SG-buffer is implemented, the offset must be calculated 608 * correctly... 609 */ 610 static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream) 611 { 612 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 613 struct snd_pcm_runtime *runtime = substream->runtime; 614 struct atiixp_dma *dma = runtime->private_data; 615 unsigned int curptr; 616 int timeout = 1000; 617 618 while (timeout--) { 619 curptr = readl(chip->remap_addr + dma->ops->dt_cur); 620 if (curptr < dma->buf_addr) 621 continue; 622 curptr -= dma->buf_addr; 623 if (curptr >= dma->buf_bytes) 624 continue; 625 return bytes_to_frames(runtime, curptr); 626 } 627 dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n", 628 readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr); 629 return 0; 630 } 631 632 /* 633 * XRUN detected, and stop the PCM substream 634 */ 635 static void snd_atiixp_xrun_dma(struct atiixp_modem *chip, 636 struct atiixp_dma *dma) 637 { 638 if (! dma->substream || ! dma->running) 639 return; 640 dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n", dma->ops->type); 641 snd_pcm_stop_xrun(dma->substream); 642 } 643 644 /* 645 * the period ack. update the substream. 646 */ 647 static void snd_atiixp_update_dma(struct atiixp_modem *chip, 648 struct atiixp_dma *dma) 649 { 650 if (! dma->substream || ! dma->running) 651 return; 652 snd_pcm_period_elapsed(dma->substream); 653 } 654 655 /* set BUS_BUSY interrupt bit if any DMA is running */ 656 /* call with spinlock held */ 657 static void snd_atiixp_check_bus_busy(struct atiixp_modem *chip) 658 { 659 unsigned int bus_busy; 660 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN | 661 ATI_REG_CMD_MODEM_RECEIVE_EN)) 662 bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY; 663 else 664 bus_busy = 0; 665 atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy); 666 } 667 668 /* common trigger callback 669 * calling the lowlevel callbacks in it 670 */ 671 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 672 { 673 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 674 struct atiixp_dma *dma = substream->runtime->private_data; 675 int err = 0; 676 677 if (snd_BUG_ON(!dma->ops->enable_transfer || 678 !dma->ops->flush_dma)) 679 return -EINVAL; 680 681 spin_lock(&chip->reg_lock); 682 switch(cmd) { 683 case SNDRV_PCM_TRIGGER_START: 684 dma->ops->enable_transfer(chip, 1); 685 dma->running = 1; 686 break; 687 case SNDRV_PCM_TRIGGER_STOP: 688 dma->ops->enable_transfer(chip, 0); 689 dma->running = 0; 690 break; 691 default: 692 err = -EINVAL; 693 break; 694 } 695 if (! err) { 696 snd_atiixp_check_bus_busy(chip); 697 if (cmd == SNDRV_PCM_TRIGGER_STOP) { 698 dma->ops->flush_dma(chip); 699 snd_atiixp_check_bus_busy(chip); 700 } 701 } 702 spin_unlock(&chip->reg_lock); 703 return err; 704 } 705 706 707 /* 708 * lowlevel callbacks for each DMA type 709 * 710 * every callback is supposed to be called in chip->reg_lock spinlock 711 */ 712 713 /* flush FIFO of analog OUT DMA */ 714 static void atiixp_out_flush_dma(struct atiixp_modem *chip) 715 { 716 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH); 717 } 718 719 /* enable/disable analog OUT DMA */ 720 static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on) 721 { 722 unsigned int data; 723 data = atiixp_read(chip, CMD); 724 if (on) { 725 if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN) 726 return; 727 atiixp_out_flush_dma(chip); 728 data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN; 729 } else 730 data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN; 731 atiixp_write(chip, CMD, data); 732 } 733 734 /* start/stop transfer over OUT DMA */ 735 static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on) 736 { 737 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN, 738 on ? ATI_REG_CMD_MODEM_SEND1_EN : 0); 739 } 740 741 /* enable/disable analog IN DMA */ 742 static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on) 743 { 744 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN, 745 on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0); 746 } 747 748 /* start/stop analog IN DMA */ 749 static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on) 750 { 751 if (on) { 752 unsigned int data = atiixp_read(chip, CMD); 753 if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) { 754 data |= ATI_REG_CMD_MODEM_RECEIVE_EN; 755 atiixp_write(chip, CMD, data); 756 } 757 } else 758 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0); 759 } 760 761 /* flush FIFO of analog IN DMA */ 762 static void atiixp_in_flush_dma(struct atiixp_modem *chip) 763 { 764 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH); 765 } 766 767 /* set up slots and formats for analog OUT */ 768 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream) 769 { 770 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 771 unsigned int data; 772 773 spin_lock_irq(&chip->reg_lock); 774 /* set output threshold */ 775 data = atiixp_read(chip, MODEM_OUT_FIFO); 776 data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK; 777 data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT; 778 atiixp_write(chip, MODEM_OUT_FIFO, data); 779 spin_unlock_irq(&chip->reg_lock); 780 return 0; 781 } 782 783 /* set up slots and formats for analog IN */ 784 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream) 785 { 786 return 0; 787 } 788 789 /* 790 * hw_params - allocate the buffer and set up buffer descriptors 791 */ 792 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream, 793 struct snd_pcm_hw_params *hw_params) 794 { 795 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 796 struct atiixp_dma *dma = substream->runtime->private_data; 797 int err; 798 int i; 799 800 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 801 if (err < 0) 802 return err; 803 dma->buf_addr = substream->runtime->dma_addr; 804 dma->buf_bytes = params_buffer_bytes(hw_params); 805 806 err = atiixp_build_dma_packets(chip, dma, substream, 807 params_periods(hw_params), 808 params_period_bytes(hw_params)); 809 if (err < 0) 810 return err; 811 812 /* set up modem rate */ 813 for (i = 0; i < NUM_ATI_CODECS; i++) { 814 if (! chip->ac97[i]) 815 continue; 816 snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params)); 817 snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0); 818 } 819 820 return err; 821 } 822 823 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream) 824 { 825 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 826 struct atiixp_dma *dma = substream->runtime->private_data; 827 828 atiixp_clear_dma_packets(chip, dma, substream); 829 snd_pcm_lib_free_pages(substream); 830 return 0; 831 } 832 833 834 /* 835 * pcm hardware definition, identical for all DMA types 836 */ 837 static const struct snd_pcm_hardware snd_atiixp_pcm_hw = 838 { 839 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 840 SNDRV_PCM_INFO_BLOCK_TRANSFER | 841 SNDRV_PCM_INFO_MMAP_VALID), 842 .formats = SNDRV_PCM_FMTBIT_S16_LE, 843 .rates = (SNDRV_PCM_RATE_8000 | 844 SNDRV_PCM_RATE_16000 | 845 SNDRV_PCM_RATE_KNOT), 846 .rate_min = 8000, 847 .rate_max = 16000, 848 .channels_min = 2, 849 .channels_max = 2, 850 .buffer_bytes_max = 256 * 1024, 851 .period_bytes_min = 32, 852 .period_bytes_max = 128 * 1024, 853 .periods_min = 2, 854 .periods_max = ATI_MAX_DESCRIPTORS, 855 }; 856 857 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream, 858 struct atiixp_dma *dma, int pcm_type) 859 { 860 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 861 struct snd_pcm_runtime *runtime = substream->runtime; 862 int err; 863 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 864 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { 865 .count = ARRAY_SIZE(rates), 866 .list = rates, 867 .mask = 0, 868 }; 869 870 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 871 return -EINVAL; 872 873 if (dma->opened) 874 return -EBUSY; 875 dma->substream = substream; 876 runtime->hw = snd_atiixp_pcm_hw; 877 dma->ac97_pcm_type = pcm_type; 878 if ((err = snd_pcm_hw_constraint_list(runtime, 0, 879 SNDRV_PCM_HW_PARAM_RATE, 880 &hw_constraints_rates)) < 0) 881 return err; 882 if ((err = snd_pcm_hw_constraint_integer(runtime, 883 SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 884 return err; 885 runtime->private_data = dma; 886 887 /* enable DMA bits */ 888 spin_lock_irq(&chip->reg_lock); 889 dma->ops->enable_dma(chip, 1); 890 spin_unlock_irq(&chip->reg_lock); 891 dma->opened = 1; 892 893 return 0; 894 } 895 896 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream, 897 struct atiixp_dma *dma) 898 { 899 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 900 /* disable DMA bits */ 901 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 902 return -EINVAL; 903 spin_lock_irq(&chip->reg_lock); 904 dma->ops->enable_dma(chip, 0); 905 spin_unlock_irq(&chip->reg_lock); 906 dma->substream = NULL; 907 dma->opened = 0; 908 return 0; 909 } 910 911 /* 912 */ 913 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream) 914 { 915 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 916 int err; 917 918 mutex_lock(&chip->open_mutex); 919 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0); 920 mutex_unlock(&chip->open_mutex); 921 if (err < 0) 922 return err; 923 return 0; 924 } 925 926 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream) 927 { 928 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 929 int err; 930 mutex_lock(&chip->open_mutex); 931 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]); 932 mutex_unlock(&chip->open_mutex); 933 return err; 934 } 935 936 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream) 937 { 938 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 939 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1); 940 } 941 942 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream) 943 { 944 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 945 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]); 946 } 947 948 949 /* AC97 playback */ 950 static const struct snd_pcm_ops snd_atiixp_playback_ops = { 951 .open = snd_atiixp_playback_open, 952 .close = snd_atiixp_playback_close, 953 .ioctl = snd_pcm_lib_ioctl, 954 .hw_params = snd_atiixp_pcm_hw_params, 955 .hw_free = snd_atiixp_pcm_hw_free, 956 .prepare = snd_atiixp_playback_prepare, 957 .trigger = snd_atiixp_pcm_trigger, 958 .pointer = snd_atiixp_pcm_pointer, 959 }; 960 961 /* AC97 capture */ 962 static const struct snd_pcm_ops snd_atiixp_capture_ops = { 963 .open = snd_atiixp_capture_open, 964 .close = snd_atiixp_capture_close, 965 .ioctl = snd_pcm_lib_ioctl, 966 .hw_params = snd_atiixp_pcm_hw_params, 967 .hw_free = snd_atiixp_pcm_hw_free, 968 .prepare = snd_atiixp_capture_prepare, 969 .trigger = snd_atiixp_pcm_trigger, 970 .pointer = snd_atiixp_pcm_pointer, 971 }; 972 973 static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = { 974 .type = ATI_DMA_PLAYBACK, 975 .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR, 976 .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR, 977 .enable_dma = atiixp_out_enable_dma, 978 .enable_transfer = atiixp_out_enable_transfer, 979 .flush_dma = atiixp_out_flush_dma, 980 }; 981 982 static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = { 983 .type = ATI_DMA_CAPTURE, 984 .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR, 985 .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR, 986 .enable_dma = atiixp_in_enable_dma, 987 .enable_transfer = atiixp_in_enable_transfer, 988 .flush_dma = atiixp_in_flush_dma, 989 }; 990 991 static int snd_atiixp_pcm_new(struct atiixp_modem *chip) 992 { 993 struct snd_pcm *pcm; 994 int err; 995 996 /* initialize constants */ 997 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops; 998 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops; 999 1000 /* PCM #0: analog I/O */ 1001 err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm); 1002 if (err < 0) 1003 return err; 1004 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops); 1005 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops); 1006 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 1007 pcm->private_data = chip; 1008 strcpy(pcm->name, "ATI IXP MC97"); 1009 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm; 1010 1011 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 1012 snd_dma_pci_data(chip->pci), 1013 64*1024, 128*1024); 1014 1015 return 0; 1016 } 1017 1018 1019 1020 /* 1021 * interrupt handler 1022 */ 1023 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id) 1024 { 1025 struct atiixp_modem *chip = dev_id; 1026 unsigned int status; 1027 1028 status = atiixp_read(chip, ISR); 1029 1030 if (! status) 1031 return IRQ_NONE; 1032 1033 /* process audio DMA */ 1034 if (status & ATI_REG_ISR_MODEM_OUT1_XRUN) 1035 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1036 else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS) 1037 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1038 if (status & ATI_REG_ISR_MODEM_IN_XRUN) 1039 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1040 else if (status & ATI_REG_ISR_MODEM_IN_STATUS) 1041 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1042 1043 /* for codec detection */ 1044 if (status & CODEC_CHECK_BITS) { 1045 unsigned int detected; 1046 detected = status & CODEC_CHECK_BITS; 1047 spin_lock(&chip->reg_lock); 1048 chip->codec_not_ready_bits |= detected; 1049 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */ 1050 spin_unlock(&chip->reg_lock); 1051 } 1052 1053 /* ack */ 1054 atiixp_write(chip, ISR, status); 1055 1056 return IRQ_HANDLED; 1057 } 1058 1059 1060 /* 1061 * ac97 mixer section 1062 */ 1063 1064 static int snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock) 1065 { 1066 struct snd_ac97_bus *pbus; 1067 struct snd_ac97_template ac97; 1068 int i, err; 1069 int codec_count; 1070 static struct snd_ac97_bus_ops ops = { 1071 .write = snd_atiixp_ac97_write, 1072 .read = snd_atiixp_ac97_read, 1073 }; 1074 static unsigned int codec_skip[NUM_ATI_CODECS] = { 1075 ATI_REG_ISR_CODEC0_NOT_READY, 1076 ATI_REG_ISR_CODEC1_NOT_READY, 1077 ATI_REG_ISR_CODEC2_NOT_READY, 1078 }; 1079 1080 if (snd_atiixp_codec_detect(chip) < 0) 1081 return -ENXIO; 1082 1083 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0) 1084 return err; 1085 pbus->clock = clock; 1086 chip->ac97_bus = pbus; 1087 1088 codec_count = 0; 1089 for (i = 0; i < NUM_ATI_CODECS; i++) { 1090 if (chip->codec_not_ready_bits & codec_skip[i]) 1091 continue; 1092 memset(&ac97, 0, sizeof(ac97)); 1093 ac97.private_data = chip; 1094 ac97.pci = chip->pci; 1095 ac97.num = i; 1096 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 1097 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) { 1098 chip->ac97[i] = NULL; /* to be sure */ 1099 dev_dbg(chip->card->dev, 1100 "codec %d not available for modem\n", i); 1101 continue; 1102 } 1103 codec_count++; 1104 } 1105 1106 if (! codec_count) { 1107 dev_err(chip->card->dev, "no codec available\n"); 1108 return -ENODEV; 1109 } 1110 1111 /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */ 1112 1113 return 0; 1114 } 1115 1116 1117 #ifdef CONFIG_PM_SLEEP 1118 /* 1119 * power management 1120 */ 1121 static int snd_atiixp_suspend(struct device *dev) 1122 { 1123 struct snd_card *card = dev_get_drvdata(dev); 1124 struct atiixp_modem *chip = card->private_data; 1125 int i; 1126 1127 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1128 for (i = 0; i < NUM_ATI_PCMDEVS; i++) 1129 snd_pcm_suspend_all(chip->pcmdevs[i]); 1130 for (i = 0; i < NUM_ATI_CODECS; i++) 1131 snd_ac97_suspend(chip->ac97[i]); 1132 snd_atiixp_aclink_down(chip); 1133 snd_atiixp_chip_stop(chip); 1134 return 0; 1135 } 1136 1137 static int snd_atiixp_resume(struct device *dev) 1138 { 1139 struct snd_card *card = dev_get_drvdata(dev); 1140 struct atiixp_modem *chip = card->private_data; 1141 int i; 1142 1143 snd_atiixp_aclink_reset(chip); 1144 snd_atiixp_chip_start(chip); 1145 1146 for (i = 0; i < NUM_ATI_CODECS; i++) 1147 snd_ac97_resume(chip->ac97[i]); 1148 1149 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1150 return 0; 1151 } 1152 1153 static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume); 1154 #define SND_ATIIXP_PM_OPS &snd_atiixp_pm 1155 #else 1156 #define SND_ATIIXP_PM_OPS NULL 1157 #endif /* CONFIG_PM_SLEEP */ 1158 1159 /* 1160 * proc interface for register dump 1161 */ 1162 1163 static void snd_atiixp_proc_read(struct snd_info_entry *entry, 1164 struct snd_info_buffer *buffer) 1165 { 1166 struct atiixp_modem *chip = entry->private_data; 1167 int i; 1168 1169 for (i = 0; i < 256; i += 4) 1170 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i)); 1171 } 1172 1173 static void snd_atiixp_proc_init(struct atiixp_modem *chip) 1174 { 1175 struct snd_info_entry *entry; 1176 1177 if (! snd_card_proc_new(chip->card, "atiixp-modem", &entry)) 1178 snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read); 1179 } 1180 1181 1182 /* 1183 * destructor 1184 */ 1185 1186 static int snd_atiixp_free(struct atiixp_modem *chip) 1187 { 1188 if (chip->irq < 0) 1189 goto __hw_end; 1190 snd_atiixp_chip_stop(chip); 1191 1192 __hw_end: 1193 if (chip->irq >= 0) 1194 free_irq(chip->irq, chip); 1195 iounmap(chip->remap_addr); 1196 pci_release_regions(chip->pci); 1197 pci_disable_device(chip->pci); 1198 kfree(chip); 1199 return 0; 1200 } 1201 1202 static int snd_atiixp_dev_free(struct snd_device *device) 1203 { 1204 struct atiixp_modem *chip = device->device_data; 1205 return snd_atiixp_free(chip); 1206 } 1207 1208 /* 1209 * constructor for chip instance 1210 */ 1211 static int snd_atiixp_create(struct snd_card *card, 1212 struct pci_dev *pci, 1213 struct atiixp_modem **r_chip) 1214 { 1215 static struct snd_device_ops ops = { 1216 .dev_free = snd_atiixp_dev_free, 1217 }; 1218 struct atiixp_modem *chip; 1219 int err; 1220 1221 if ((err = pci_enable_device(pci)) < 0) 1222 return err; 1223 1224 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1225 if (chip == NULL) { 1226 pci_disable_device(pci); 1227 return -ENOMEM; 1228 } 1229 1230 spin_lock_init(&chip->reg_lock); 1231 mutex_init(&chip->open_mutex); 1232 chip->card = card; 1233 chip->pci = pci; 1234 chip->irq = -1; 1235 if ((err = pci_request_regions(pci, "ATI IXP MC97")) < 0) { 1236 kfree(chip); 1237 pci_disable_device(pci); 1238 return err; 1239 } 1240 chip->addr = pci_resource_start(pci, 0); 1241 chip->remap_addr = pci_ioremap_bar(pci, 0); 1242 if (chip->remap_addr == NULL) { 1243 dev_err(card->dev, "AC'97 space ioremap problem\n"); 1244 snd_atiixp_free(chip); 1245 return -EIO; 1246 } 1247 1248 if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED, 1249 KBUILD_MODNAME, chip)) { 1250 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 1251 snd_atiixp_free(chip); 1252 return -EBUSY; 1253 } 1254 chip->irq = pci->irq; 1255 pci_set_master(pci); 1256 synchronize_irq(chip->irq); 1257 1258 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1259 snd_atiixp_free(chip); 1260 return err; 1261 } 1262 1263 *r_chip = chip; 1264 return 0; 1265 } 1266 1267 1268 static int snd_atiixp_probe(struct pci_dev *pci, 1269 const struct pci_device_id *pci_id) 1270 { 1271 struct snd_card *card; 1272 struct atiixp_modem *chip; 1273 int err; 1274 1275 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); 1276 if (err < 0) 1277 return err; 1278 1279 strcpy(card->driver, "ATIIXP-MODEM"); 1280 strcpy(card->shortname, "ATI IXP Modem"); 1281 if ((err = snd_atiixp_create(card, pci, &chip)) < 0) 1282 goto __error; 1283 card->private_data = chip; 1284 1285 if ((err = snd_atiixp_aclink_reset(chip)) < 0) 1286 goto __error; 1287 1288 if ((err = snd_atiixp_mixer_new(chip, ac97_clock)) < 0) 1289 goto __error; 1290 1291 if ((err = snd_atiixp_pcm_new(chip)) < 0) 1292 goto __error; 1293 1294 snd_atiixp_proc_init(chip); 1295 1296 snd_atiixp_chip_start(chip); 1297 1298 sprintf(card->longname, "%s rev %x at 0x%lx, irq %i", 1299 card->shortname, pci->revision, chip->addr, chip->irq); 1300 1301 if ((err = snd_card_register(card)) < 0) 1302 goto __error; 1303 1304 pci_set_drvdata(pci, card); 1305 return 0; 1306 1307 __error: 1308 snd_card_free(card); 1309 return err; 1310 } 1311 1312 static void snd_atiixp_remove(struct pci_dev *pci) 1313 { 1314 snd_card_free(pci_get_drvdata(pci)); 1315 } 1316 1317 static struct pci_driver atiixp_modem_driver = { 1318 .name = KBUILD_MODNAME, 1319 .id_table = snd_atiixp_ids, 1320 .probe = snd_atiixp_probe, 1321 .remove = snd_atiixp_remove, 1322 .driver = { 1323 .pm = SND_ATIIXP_PM_OPS, 1324 }, 1325 }; 1326 1327 module_pci_driver(atiixp_modem_driver); 1328