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 <asm/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 u32 addr; /* DMA buffer address */ 187 u16 status; /* status bits */ 188 u16 size; /* size of the packet in dwords */ 189 u32 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 DEFINE_PCI_DEVICE_TABLE(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 snd_printk(KERN_WARNING "atiixp-modem: 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 snd_printk(KERN_WARNING "atiixp-modem: 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 snd_printk(KERN_ERR "atiixp-modem: 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 snd_printk(KERN_ERR "atiixp-modem: 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 snd_printd("atiixp-modem: 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 snd_printdd("atiixp-modem: XRUN detected (DMA %d)\n", dma->ops->type); 641 snd_pcm_stream_lock(dma->substream); 642 snd_pcm_stop(dma->substream, SNDRV_PCM_STATE_XRUN); 643 snd_pcm_stream_unlock(dma->substream); 644 } 645 646 /* 647 * the period ack. update the substream. 648 */ 649 static void snd_atiixp_update_dma(struct atiixp_modem *chip, 650 struct atiixp_dma *dma) 651 { 652 if (! dma->substream || ! dma->running) 653 return; 654 snd_pcm_period_elapsed(dma->substream); 655 } 656 657 /* set BUS_BUSY interrupt bit if any DMA is running */ 658 /* call with spinlock held */ 659 static void snd_atiixp_check_bus_busy(struct atiixp_modem *chip) 660 { 661 unsigned int bus_busy; 662 if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN | 663 ATI_REG_CMD_MODEM_RECEIVE_EN)) 664 bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY; 665 else 666 bus_busy = 0; 667 atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy); 668 } 669 670 /* common trigger callback 671 * calling the lowlevel callbacks in it 672 */ 673 static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 674 { 675 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 676 struct atiixp_dma *dma = substream->runtime->private_data; 677 int err = 0; 678 679 if (snd_BUG_ON(!dma->ops->enable_transfer || 680 !dma->ops->flush_dma)) 681 return -EINVAL; 682 683 spin_lock(&chip->reg_lock); 684 switch(cmd) { 685 case SNDRV_PCM_TRIGGER_START: 686 dma->ops->enable_transfer(chip, 1); 687 dma->running = 1; 688 break; 689 case SNDRV_PCM_TRIGGER_STOP: 690 dma->ops->enable_transfer(chip, 0); 691 dma->running = 0; 692 break; 693 default: 694 err = -EINVAL; 695 break; 696 } 697 if (! err) { 698 snd_atiixp_check_bus_busy(chip); 699 if (cmd == SNDRV_PCM_TRIGGER_STOP) { 700 dma->ops->flush_dma(chip); 701 snd_atiixp_check_bus_busy(chip); 702 } 703 } 704 spin_unlock(&chip->reg_lock); 705 return err; 706 } 707 708 709 /* 710 * lowlevel callbacks for each DMA type 711 * 712 * every callback is supposed to be called in chip->reg_lock spinlock 713 */ 714 715 /* flush FIFO of analog OUT DMA */ 716 static void atiixp_out_flush_dma(struct atiixp_modem *chip) 717 { 718 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH); 719 } 720 721 /* enable/disable analog OUT DMA */ 722 static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on) 723 { 724 unsigned int data; 725 data = atiixp_read(chip, CMD); 726 if (on) { 727 if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN) 728 return; 729 atiixp_out_flush_dma(chip); 730 data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN; 731 } else 732 data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN; 733 atiixp_write(chip, CMD, data); 734 } 735 736 /* start/stop transfer over OUT DMA */ 737 static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on) 738 { 739 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN, 740 on ? ATI_REG_CMD_MODEM_SEND1_EN : 0); 741 } 742 743 /* enable/disable analog IN DMA */ 744 static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on) 745 { 746 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN, 747 on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0); 748 } 749 750 /* start/stop analog IN DMA */ 751 static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on) 752 { 753 if (on) { 754 unsigned int data = atiixp_read(chip, CMD); 755 if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) { 756 data |= ATI_REG_CMD_MODEM_RECEIVE_EN; 757 atiixp_write(chip, CMD, data); 758 } 759 } else 760 atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0); 761 } 762 763 /* flush FIFO of analog IN DMA */ 764 static void atiixp_in_flush_dma(struct atiixp_modem *chip) 765 { 766 atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH); 767 } 768 769 /* set up slots and formats for analog OUT */ 770 static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream) 771 { 772 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 773 unsigned int data; 774 775 spin_lock_irq(&chip->reg_lock); 776 /* set output threshold */ 777 data = atiixp_read(chip, MODEM_OUT_FIFO); 778 data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK; 779 data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT; 780 atiixp_write(chip, MODEM_OUT_FIFO, data); 781 spin_unlock_irq(&chip->reg_lock); 782 return 0; 783 } 784 785 /* set up slots and formats for analog IN */ 786 static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream) 787 { 788 return 0; 789 } 790 791 /* 792 * hw_params - allocate the buffer and set up buffer descriptors 793 */ 794 static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream, 795 struct snd_pcm_hw_params *hw_params) 796 { 797 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 798 struct atiixp_dma *dma = substream->runtime->private_data; 799 int err; 800 int i; 801 802 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); 803 if (err < 0) 804 return err; 805 dma->buf_addr = substream->runtime->dma_addr; 806 dma->buf_bytes = params_buffer_bytes(hw_params); 807 808 err = atiixp_build_dma_packets(chip, dma, substream, 809 params_periods(hw_params), 810 params_period_bytes(hw_params)); 811 if (err < 0) 812 return err; 813 814 /* set up modem rate */ 815 for (i = 0; i < NUM_ATI_CODECS; i++) { 816 if (! chip->ac97[i]) 817 continue; 818 snd_ac97_write(chip->ac97[i], AC97_LINE1_RATE, params_rate(hw_params)); 819 snd_ac97_write(chip->ac97[i], AC97_LINE1_LEVEL, 0); 820 } 821 822 return err; 823 } 824 825 static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream) 826 { 827 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 828 struct atiixp_dma *dma = substream->runtime->private_data; 829 830 atiixp_clear_dma_packets(chip, dma, substream); 831 snd_pcm_lib_free_pages(substream); 832 return 0; 833 } 834 835 836 /* 837 * pcm hardware definition, identical for all DMA types 838 */ 839 static struct snd_pcm_hardware snd_atiixp_pcm_hw = 840 { 841 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | 842 SNDRV_PCM_INFO_BLOCK_TRANSFER | 843 SNDRV_PCM_INFO_MMAP_VALID), 844 .formats = SNDRV_PCM_FMTBIT_S16_LE, 845 .rates = (SNDRV_PCM_RATE_8000 | 846 SNDRV_PCM_RATE_16000 | 847 SNDRV_PCM_RATE_KNOT), 848 .rate_min = 8000, 849 .rate_max = 16000, 850 .channels_min = 2, 851 .channels_max = 2, 852 .buffer_bytes_max = 256 * 1024, 853 .period_bytes_min = 32, 854 .period_bytes_max = 128 * 1024, 855 .periods_min = 2, 856 .periods_max = ATI_MAX_DESCRIPTORS, 857 }; 858 859 static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream, 860 struct atiixp_dma *dma, int pcm_type) 861 { 862 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 863 struct snd_pcm_runtime *runtime = substream->runtime; 864 int err; 865 static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; 866 static struct snd_pcm_hw_constraint_list hw_constraints_rates = { 867 .count = ARRAY_SIZE(rates), 868 .list = rates, 869 .mask = 0, 870 }; 871 872 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 873 return -EINVAL; 874 875 if (dma->opened) 876 return -EBUSY; 877 dma->substream = substream; 878 runtime->hw = snd_atiixp_pcm_hw; 879 dma->ac97_pcm_type = pcm_type; 880 if ((err = snd_pcm_hw_constraint_list(runtime, 0, 881 SNDRV_PCM_HW_PARAM_RATE, 882 &hw_constraints_rates)) < 0) 883 return err; 884 if ((err = snd_pcm_hw_constraint_integer(runtime, 885 SNDRV_PCM_HW_PARAM_PERIODS)) < 0) 886 return err; 887 runtime->private_data = dma; 888 889 /* enable DMA bits */ 890 spin_lock_irq(&chip->reg_lock); 891 dma->ops->enable_dma(chip, 1); 892 spin_unlock_irq(&chip->reg_lock); 893 dma->opened = 1; 894 895 return 0; 896 } 897 898 static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream, 899 struct atiixp_dma *dma) 900 { 901 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 902 /* disable DMA bits */ 903 if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) 904 return -EINVAL; 905 spin_lock_irq(&chip->reg_lock); 906 dma->ops->enable_dma(chip, 0); 907 spin_unlock_irq(&chip->reg_lock); 908 dma->substream = NULL; 909 dma->opened = 0; 910 return 0; 911 } 912 913 /* 914 */ 915 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream) 916 { 917 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 918 int err; 919 920 mutex_lock(&chip->open_mutex); 921 err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0); 922 mutex_unlock(&chip->open_mutex); 923 if (err < 0) 924 return err; 925 return 0; 926 } 927 928 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream) 929 { 930 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 931 int err; 932 mutex_lock(&chip->open_mutex); 933 err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]); 934 mutex_unlock(&chip->open_mutex); 935 return err; 936 } 937 938 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream) 939 { 940 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 941 return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_CAPTURE], 1); 942 } 943 944 static int snd_atiixp_capture_close(struct snd_pcm_substream *substream) 945 { 946 struct atiixp_modem *chip = snd_pcm_substream_chip(substream); 947 return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_CAPTURE]); 948 } 949 950 951 /* AC97 playback */ 952 static struct snd_pcm_ops snd_atiixp_playback_ops = { 953 .open = snd_atiixp_playback_open, 954 .close = snd_atiixp_playback_close, 955 .ioctl = snd_pcm_lib_ioctl, 956 .hw_params = snd_atiixp_pcm_hw_params, 957 .hw_free = snd_atiixp_pcm_hw_free, 958 .prepare = snd_atiixp_playback_prepare, 959 .trigger = snd_atiixp_pcm_trigger, 960 .pointer = snd_atiixp_pcm_pointer, 961 }; 962 963 /* AC97 capture */ 964 static struct snd_pcm_ops snd_atiixp_capture_ops = { 965 .open = snd_atiixp_capture_open, 966 .close = snd_atiixp_capture_close, 967 .ioctl = snd_pcm_lib_ioctl, 968 .hw_params = snd_atiixp_pcm_hw_params, 969 .hw_free = snd_atiixp_pcm_hw_free, 970 .prepare = snd_atiixp_capture_prepare, 971 .trigger = snd_atiixp_pcm_trigger, 972 .pointer = snd_atiixp_pcm_pointer, 973 }; 974 975 static struct atiixp_dma_ops snd_atiixp_playback_dma_ops = { 976 .type = ATI_DMA_PLAYBACK, 977 .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR, 978 .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR, 979 .enable_dma = atiixp_out_enable_dma, 980 .enable_transfer = atiixp_out_enable_transfer, 981 .flush_dma = atiixp_out_flush_dma, 982 }; 983 984 static struct atiixp_dma_ops snd_atiixp_capture_dma_ops = { 985 .type = ATI_DMA_CAPTURE, 986 .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR, 987 .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR, 988 .enable_dma = atiixp_in_enable_dma, 989 .enable_transfer = atiixp_in_enable_transfer, 990 .flush_dma = atiixp_in_flush_dma, 991 }; 992 993 static int snd_atiixp_pcm_new(struct atiixp_modem *chip) 994 { 995 struct snd_pcm *pcm; 996 int err; 997 998 /* initialize constants */ 999 chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops; 1000 chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops; 1001 1002 /* PCM #0: analog I/O */ 1003 err = snd_pcm_new(chip->card, "ATI IXP MC97", ATI_PCMDEV_ANALOG, 1, 1, &pcm); 1004 if (err < 0) 1005 return err; 1006 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_atiixp_playback_ops); 1007 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_atiixp_capture_ops); 1008 pcm->dev_class = SNDRV_PCM_CLASS_MODEM; 1009 pcm->private_data = chip; 1010 strcpy(pcm->name, "ATI IXP MC97"); 1011 chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm; 1012 1013 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, 1014 snd_dma_pci_data(chip->pci), 1015 64*1024, 128*1024); 1016 1017 return 0; 1018 } 1019 1020 1021 1022 /* 1023 * interrupt handler 1024 */ 1025 static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id) 1026 { 1027 struct atiixp_modem *chip = dev_id; 1028 unsigned int status; 1029 1030 status = atiixp_read(chip, ISR); 1031 1032 if (! status) 1033 return IRQ_NONE; 1034 1035 /* process audio DMA */ 1036 if (status & ATI_REG_ISR_MODEM_OUT1_XRUN) 1037 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1038 else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS) 1039 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_PLAYBACK]); 1040 if (status & ATI_REG_ISR_MODEM_IN_XRUN) 1041 snd_atiixp_xrun_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1042 else if (status & ATI_REG_ISR_MODEM_IN_STATUS) 1043 snd_atiixp_update_dma(chip, &chip->dmas[ATI_DMA_CAPTURE]); 1044 1045 /* for codec detection */ 1046 if (status & CODEC_CHECK_BITS) { 1047 unsigned int detected; 1048 detected = status & CODEC_CHECK_BITS; 1049 spin_lock(&chip->reg_lock); 1050 chip->codec_not_ready_bits |= detected; 1051 atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */ 1052 spin_unlock(&chip->reg_lock); 1053 } 1054 1055 /* ack */ 1056 atiixp_write(chip, ISR, status); 1057 1058 return IRQ_HANDLED; 1059 } 1060 1061 1062 /* 1063 * ac97 mixer section 1064 */ 1065 1066 static int snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock) 1067 { 1068 struct snd_ac97_bus *pbus; 1069 struct snd_ac97_template ac97; 1070 int i, err; 1071 int codec_count; 1072 static struct snd_ac97_bus_ops ops = { 1073 .write = snd_atiixp_ac97_write, 1074 .read = snd_atiixp_ac97_read, 1075 }; 1076 static unsigned int codec_skip[NUM_ATI_CODECS] = { 1077 ATI_REG_ISR_CODEC0_NOT_READY, 1078 ATI_REG_ISR_CODEC1_NOT_READY, 1079 ATI_REG_ISR_CODEC2_NOT_READY, 1080 }; 1081 1082 if (snd_atiixp_codec_detect(chip) < 0) 1083 return -ENXIO; 1084 1085 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0) 1086 return err; 1087 pbus->clock = clock; 1088 chip->ac97_bus = pbus; 1089 1090 codec_count = 0; 1091 for (i = 0; i < NUM_ATI_CODECS; i++) { 1092 if (chip->codec_not_ready_bits & codec_skip[i]) 1093 continue; 1094 memset(&ac97, 0, sizeof(ac97)); 1095 ac97.private_data = chip; 1096 ac97.pci = chip->pci; 1097 ac97.num = i; 1098 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; 1099 if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97[i])) < 0) { 1100 chip->ac97[i] = NULL; /* to be sure */ 1101 snd_printdd("atiixp-modem: codec %d not available for modem\n", i); 1102 continue; 1103 } 1104 codec_count++; 1105 } 1106 1107 if (! codec_count) { 1108 snd_printk(KERN_ERR "atiixp-modem: no codec available\n"); 1109 return -ENODEV; 1110 } 1111 1112 /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */ 1113 1114 return 0; 1115 } 1116 1117 1118 #ifdef CONFIG_PM_SLEEP 1119 /* 1120 * power management 1121 */ 1122 static int snd_atiixp_suspend(struct device *dev) 1123 { 1124 struct pci_dev *pci = to_pci_dev(dev); 1125 struct snd_card *card = dev_get_drvdata(dev); 1126 struct atiixp_modem *chip = card->private_data; 1127 int i; 1128 1129 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1130 for (i = 0; i < NUM_ATI_PCMDEVS; i++) 1131 snd_pcm_suspend_all(chip->pcmdevs[i]); 1132 for (i = 0; i < NUM_ATI_CODECS; i++) 1133 snd_ac97_suspend(chip->ac97[i]); 1134 snd_atiixp_aclink_down(chip); 1135 snd_atiixp_chip_stop(chip); 1136 1137 pci_disable_device(pci); 1138 pci_save_state(pci); 1139 pci_set_power_state(pci, PCI_D3hot); 1140 return 0; 1141 } 1142 1143 static int snd_atiixp_resume(struct device *dev) 1144 { 1145 struct pci_dev *pci = to_pci_dev(dev); 1146 struct snd_card *card = dev_get_drvdata(dev); 1147 struct atiixp_modem *chip = card->private_data; 1148 int i; 1149 1150 pci_set_power_state(pci, PCI_D0); 1151 pci_restore_state(pci); 1152 if (pci_enable_device(pci) < 0) { 1153 printk(KERN_ERR "atiixp-modem: pci_enable_device failed, " 1154 "disabling device\n"); 1155 snd_card_disconnect(card); 1156 return -EIO; 1157 } 1158 pci_set_master(pci); 1159 1160 snd_atiixp_aclink_reset(chip); 1161 snd_atiixp_chip_start(chip); 1162 1163 for (i = 0; i < NUM_ATI_CODECS; i++) 1164 snd_ac97_resume(chip->ac97[i]); 1165 1166 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1167 return 0; 1168 } 1169 1170 static SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume); 1171 #define SND_ATIIXP_PM_OPS &snd_atiixp_pm 1172 #else 1173 #define SND_ATIIXP_PM_OPS NULL 1174 #endif /* CONFIG_PM_SLEEP */ 1175 1176 #ifdef CONFIG_PROC_FS 1177 /* 1178 * proc interface for register dump 1179 */ 1180 1181 static void snd_atiixp_proc_read(struct snd_info_entry *entry, 1182 struct snd_info_buffer *buffer) 1183 { 1184 struct atiixp_modem *chip = entry->private_data; 1185 int i; 1186 1187 for (i = 0; i < 256; i += 4) 1188 snd_iprintf(buffer, "%02x: %08x\n", i, readl(chip->remap_addr + i)); 1189 } 1190 1191 static void snd_atiixp_proc_init(struct atiixp_modem *chip) 1192 { 1193 struct snd_info_entry *entry; 1194 1195 if (! snd_card_proc_new(chip->card, "atiixp-modem", &entry)) 1196 snd_info_set_text_ops(entry, chip, snd_atiixp_proc_read); 1197 } 1198 #else 1199 #define snd_atiixp_proc_init(chip) 1200 #endif 1201 1202 1203 /* 1204 * destructor 1205 */ 1206 1207 static int snd_atiixp_free(struct atiixp_modem *chip) 1208 { 1209 if (chip->irq < 0) 1210 goto __hw_end; 1211 snd_atiixp_chip_stop(chip); 1212 1213 __hw_end: 1214 if (chip->irq >= 0) 1215 free_irq(chip->irq, chip); 1216 if (chip->remap_addr) 1217 iounmap(chip->remap_addr); 1218 pci_release_regions(chip->pci); 1219 pci_disable_device(chip->pci); 1220 kfree(chip); 1221 return 0; 1222 } 1223 1224 static int snd_atiixp_dev_free(struct snd_device *device) 1225 { 1226 struct atiixp_modem *chip = device->device_data; 1227 return snd_atiixp_free(chip); 1228 } 1229 1230 /* 1231 * constructor for chip instance 1232 */ 1233 static int snd_atiixp_create(struct snd_card *card, 1234 struct pci_dev *pci, 1235 struct atiixp_modem **r_chip) 1236 { 1237 static struct snd_device_ops ops = { 1238 .dev_free = snd_atiixp_dev_free, 1239 }; 1240 struct atiixp_modem *chip; 1241 int err; 1242 1243 if ((err = pci_enable_device(pci)) < 0) 1244 return err; 1245 1246 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1247 if (chip == NULL) { 1248 pci_disable_device(pci); 1249 return -ENOMEM; 1250 } 1251 1252 spin_lock_init(&chip->reg_lock); 1253 mutex_init(&chip->open_mutex); 1254 chip->card = card; 1255 chip->pci = pci; 1256 chip->irq = -1; 1257 if ((err = pci_request_regions(pci, "ATI IXP MC97")) < 0) { 1258 kfree(chip); 1259 pci_disable_device(pci); 1260 return err; 1261 } 1262 chip->addr = pci_resource_start(pci, 0); 1263 chip->remap_addr = pci_ioremap_bar(pci, 0); 1264 if (chip->remap_addr == NULL) { 1265 snd_printk(KERN_ERR "AC'97 space ioremap problem\n"); 1266 snd_atiixp_free(chip); 1267 return -EIO; 1268 } 1269 1270 if (request_irq(pci->irq, snd_atiixp_interrupt, IRQF_SHARED, 1271 KBUILD_MODNAME, chip)) { 1272 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); 1273 snd_atiixp_free(chip); 1274 return -EBUSY; 1275 } 1276 chip->irq = pci->irq; 1277 pci_set_master(pci); 1278 synchronize_irq(chip->irq); 1279 1280 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { 1281 snd_atiixp_free(chip); 1282 return err; 1283 } 1284 1285 snd_card_set_dev(card, &pci->dev); 1286 1287 *r_chip = chip; 1288 return 0; 1289 } 1290 1291 1292 static int snd_atiixp_probe(struct pci_dev *pci, 1293 const struct pci_device_id *pci_id) 1294 { 1295 struct snd_card *card; 1296 struct atiixp_modem *chip; 1297 int err; 1298 1299 err = snd_card_create(index, id, THIS_MODULE, 0, &card); 1300 if (err < 0) 1301 return err; 1302 1303 strcpy(card->driver, "ATIIXP-MODEM"); 1304 strcpy(card->shortname, "ATI IXP Modem"); 1305 if ((err = snd_atiixp_create(card, pci, &chip)) < 0) 1306 goto __error; 1307 card->private_data = chip; 1308 1309 if ((err = snd_atiixp_aclink_reset(chip)) < 0) 1310 goto __error; 1311 1312 if ((err = snd_atiixp_mixer_new(chip, ac97_clock)) < 0) 1313 goto __error; 1314 1315 if ((err = snd_atiixp_pcm_new(chip)) < 0) 1316 goto __error; 1317 1318 snd_atiixp_proc_init(chip); 1319 1320 snd_atiixp_chip_start(chip); 1321 1322 sprintf(card->longname, "%s rev %x at 0x%lx, irq %i", 1323 card->shortname, pci->revision, chip->addr, chip->irq); 1324 1325 if ((err = snd_card_register(card)) < 0) 1326 goto __error; 1327 1328 pci_set_drvdata(pci, card); 1329 return 0; 1330 1331 __error: 1332 snd_card_free(card); 1333 return err; 1334 } 1335 1336 static void snd_atiixp_remove(struct pci_dev *pci) 1337 { 1338 snd_card_free(pci_get_drvdata(pci)); 1339 } 1340 1341 static struct pci_driver atiixp_modem_driver = { 1342 .name = KBUILD_MODNAME, 1343 .id_table = snd_atiixp_ids, 1344 .probe = snd_atiixp_probe, 1345 .remove = snd_atiixp_remove, 1346 .driver = { 1347 .pm = SND_ATIIXP_PM_OPS, 1348 }, 1349 }; 1350 1351 module_pci_driver(atiixp_modem_driver); 1352