1 /* 2 * Audio support for PS3 3 * Copyright (C) 2007 Sony Computer Entertainment Inc. 4 * All rights reserved. 5 * Copyright 2006, 2007 Sony Corporation 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; version 2 of the Licence. 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 #include <linux/init.h> 22 #include <linux/slab.h> 23 #include <linux/io.h> 24 #include <linux/interrupt.h> 25 #include <sound/driver.h> 26 #include <sound/core.h> 27 #include <sound/initval.h> 28 #include <sound/pcm.h> 29 #include <sound/asound.h> 30 #include <sound/memalloc.h> 31 #include <sound/pcm_params.h> 32 #include <sound/control.h> 33 #include <linux/dmapool.h> 34 #include <linux/dma-mapping.h> 35 #include <asm/firmware.h> 36 #include <asm/dma.h> 37 #include <asm/lv1call.h> 38 #include <asm/ps3.h> 39 #include <asm/ps3av.h> 40 41 #include "snd_ps3_reg.h" 42 #include "snd_ps3.h" 43 44 MODULE_LICENSE("GPL v2"); 45 MODULE_DESCRIPTION("PS3 sound driver"); 46 MODULE_AUTHOR("Sony Computer Entertainment Inc."); 47 48 /* module entries */ 49 static int __init snd_ps3_init(void); 50 static void __exit snd_ps3_exit(void); 51 52 /* ALSA snd driver ops */ 53 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream); 54 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream); 55 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream); 56 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 57 int cmd); 58 static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream 59 *substream); 60 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 61 struct snd_pcm_hw_params *hw_params); 62 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream); 63 64 65 /* ps3_system_bus_driver entries */ 66 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev); 67 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev); 68 69 /* address setup */ 70 static int snd_ps3_map_mmio(void); 71 static void snd_ps3_unmap_mmio(void); 72 static int snd_ps3_allocate_irq(void); 73 static void snd_ps3_free_irq(void); 74 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start); 75 76 /* interrupt handler */ 77 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id); 78 79 80 /* set sampling rate/format */ 81 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream); 82 /* take effect parameter change */ 83 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card); 84 /* initialize avsetting and take it effect */ 85 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card); 86 /* setup dma */ 87 static int snd_ps3_program_dma(struct snd_ps3_card_info *card, 88 enum snd_ps3_dma_filltype filltype); 89 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card); 90 91 static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void *vaddr, int ch); 92 93 94 module_init(snd_ps3_init); 95 module_exit(snd_ps3_exit); 96 97 /* 98 * global 99 */ 100 static struct snd_ps3_card_info the_card; 101 102 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY; 103 104 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644); 105 MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec"); 106 107 static int index = SNDRV_DEFAULT_IDX1; 108 static char *id = SNDRV_DEFAULT_STR1; 109 110 module_param(index, int, 0444); 111 MODULE_PARM_DESC(index, "Index value for PS3 soundchip."); 112 module_param(id, charp, 0444); 113 MODULE_PARM_DESC(id, "ID string for PS3 soundchip."); 114 115 116 /* 117 * PS3 audio register access 118 */ 119 static inline u32 read_reg(unsigned int reg) 120 { 121 return in_be32(the_card.mapped_mmio_vaddr + reg); 122 } 123 static inline void write_reg(unsigned int reg, u32 val) 124 { 125 out_be32(the_card.mapped_mmio_vaddr + reg, val); 126 } 127 static inline void update_reg(unsigned int reg, u32 or_val) 128 { 129 u32 newval = read_reg(reg) | or_val; 130 write_reg(reg, newval); 131 } 132 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val) 133 { 134 u32 newval = (read_reg(reg) & mask) | or_val; 135 write_reg(reg, newval); 136 } 137 138 /* 139 * ALSA defs 140 */ 141 const static struct snd_pcm_hardware snd_ps3_pcm_hw = { 142 .info = (SNDRV_PCM_INFO_MMAP | 143 SNDRV_PCM_INFO_NONINTERLEAVED | 144 SNDRV_PCM_INFO_MMAP_VALID), 145 .formats = (SNDRV_PCM_FMTBIT_S16_BE | 146 SNDRV_PCM_FMTBIT_S24_BE), 147 .rates = (SNDRV_PCM_RATE_44100 | 148 SNDRV_PCM_RATE_48000 | 149 SNDRV_PCM_RATE_88200 | 150 SNDRV_PCM_RATE_96000), 151 .rate_min = 44100, 152 .rate_max = 96000, 153 154 .channels_min = 2, /* stereo only */ 155 .channels_max = 2, 156 157 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64, 158 159 /* interrupt by four stages */ 160 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 161 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 162 163 .periods_min = 16, 164 .periods_max = 32, /* buffer_size_max/ period_bytes_max */ 165 166 .fifo_size = PS3_AUDIO_FIFO_SIZE 167 }; 168 169 static struct snd_pcm_ops snd_ps3_pcm_spdif_ops = 170 { 171 .open = snd_ps3_pcm_open, 172 .close = snd_ps3_pcm_close, 173 .prepare = snd_ps3_pcm_prepare, 174 .ioctl = snd_pcm_lib_ioctl, 175 .trigger = snd_ps3_pcm_trigger, 176 .pointer = snd_ps3_pcm_pointer, 177 .hw_params = snd_ps3_pcm_hw_params, 178 .hw_free = snd_ps3_pcm_hw_free 179 }; 180 181 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card, 182 int count, int force_stop) 183 { 184 int dma_ch, done, retries, stop_forced = 0; 185 uint32_t status; 186 187 for (dma_ch = 0; dma_ch < 8; dma_ch ++) { 188 retries = count; 189 do { 190 status = read_reg(PS3_AUDIO_KICK(dma_ch)) & 191 PS3_AUDIO_KICK_STATUS_MASK; 192 switch (status) { 193 case PS3_AUDIO_KICK_STATUS_DONE: 194 case PS3_AUDIO_KICK_STATUS_NOTIFY: 195 case PS3_AUDIO_KICK_STATUS_CLEAR: 196 case PS3_AUDIO_KICK_STATUS_ERROR: 197 done = 1; 198 break; 199 default: 200 done = 0; 201 udelay(10); 202 } 203 } while (!done && --retries); 204 if (!retries && force_stop) { 205 pr_info("%s: DMA ch %d is not stopped.", 206 __func__, dma_ch); 207 /* last resort. force to stop dma. 208 * NOTE: this cause DMA done interrupts 209 */ 210 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR); 211 stop_forced = 1; 212 } 213 } 214 return stop_forced; 215 } 216 217 /* 218 * wait for all dma is done. 219 * NOTE: caller should reset card->running before call. 220 * If not, the interrupt handler will re-start DMA, 221 * then DMA is never stopped. 222 */ 223 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card) 224 { 225 int stop_forced; 226 /* 227 * wait for the last dma is done 228 */ 229 230 /* 231 * expected maximum DMA done time is 5.7ms + something (DMA itself). 232 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next 233 * DMA kick event would occur. 234 */ 235 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1); 236 237 /* 238 * clear outstanding interrupts. 239 */ 240 update_reg(PS3_AUDIO_INTR_0, 0); 241 update_reg(PS3_AUDIO_AX_IS, 0); 242 243 /* 244 *revert CLEAR bit since it will not reset automatically after DMA stop 245 */ 246 if (stop_forced) 247 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0); 248 /* ensure the hardware sees changes */ 249 wmb(); 250 } 251 252 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card) 253 { 254 255 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST); 256 /* ensure the hardware sees the change */ 257 wmb(); 258 } 259 260 /* 261 * convert virtual addr to ioif bus addr. 262 */ 263 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card, 264 void * paddr, 265 int ch) 266 { 267 return card->dma_start_bus_addr[ch] + 268 (paddr - card->dma_start_vaddr[ch]); 269 }; 270 271 272 /* 273 * increment ring buffer pointer. 274 * NOTE: caller must hold write spinlock 275 */ 276 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card, 277 enum snd_ps3_ch ch, size_t byte_count, 278 int stage) 279 { 280 if (!stage) 281 card->dma_last_transfer_vaddr[ch] = 282 card->dma_next_transfer_vaddr[ch]; 283 card->dma_next_transfer_vaddr[ch] += byte_count; 284 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <= 285 card->dma_next_transfer_vaddr[ch]) { 286 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch]; 287 } 288 } 289 /* 290 * setup dmac to send data to audio and attenuate samples on the ring buffer 291 */ 292 static int snd_ps3_program_dma(struct snd_ps3_card_info *card, 293 enum snd_ps3_dma_filltype filltype) 294 { 295 /* this dmac does not support over 4G */ 296 uint32_t dma_addr; 297 int fill_stages, dma_ch, stage; 298 enum snd_ps3_ch ch; 299 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */ 300 void *start_vaddr; 301 unsigned long irqsave; 302 int silent = 0; 303 304 switch (filltype) { 305 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL: 306 silent = 1; 307 /* intentionally fall thru */ 308 case SND_PS3_DMA_FILLTYPE_FIRSTFILL: 309 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS; 310 break; 311 312 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING: 313 silent = 1; 314 /* intentionally fall thru */ 315 case SND_PS3_DMA_FILLTYPE_RUNNING: 316 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY; 317 break; 318 } 319 320 snd_ps3_verify_dma_stop(card, 700, 0); 321 fill_stages = 4; 322 spin_lock_irqsave(&card->dma_lock, irqsave); 323 for (ch = 0; ch < 2; ch++) { 324 start_vaddr = card->dma_next_transfer_vaddr[0]; 325 for (stage = 0; stage < fill_stages; stage ++) { 326 dma_ch = stage * 2 + ch; 327 if (silent) 328 dma_addr = card->null_buffer_start_dma_addr; 329 else 330 dma_addr = 331 v_to_bus(card, 332 card->dma_next_transfer_vaddr[ch], 333 ch); 334 335 write_reg(PS3_AUDIO_SOURCE(dma_ch), 336 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY | 337 dma_addr)); 338 339 /* dst: fixed to 3wire#0 */ 340 if (ch == 0) 341 write_reg(PS3_AUDIO_DEST(dma_ch), 342 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 343 PS3_AUDIO_AO_3W_LDATA(0))); 344 else 345 write_reg(PS3_AUDIO_DEST(dma_ch), 346 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 347 PS3_AUDIO_AO_3W_RDATA(0))); 348 349 /* count always 1 DMA block (1/2 stage = 128 bytes) */ 350 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0); 351 /* bump pointer if needed */ 352 if (!silent) 353 snd_ps3_bump_buffer(card, ch, 354 PS3_AUDIO_DMAC_BLOCK_SIZE, 355 stage); 356 357 /* kick event */ 358 if (dma_ch == 0) 359 write_reg(PS3_AUDIO_KICK(dma_ch), 360 ch0_kick_event); 361 else 362 write_reg(PS3_AUDIO_KICK(dma_ch), 363 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch 364 - 1) | 365 PS3_AUDIO_KICK_REQUEST); 366 } 367 } 368 /* ensure the hardware sees the change */ 369 wmb(); 370 spin_unlock_irqrestore(&card->dma_lock, irqsave); 371 372 return 0; 373 } 374 375 /* 376 * audio mute on/off 377 * mute_on : 0 output enabled 378 * 1 mute 379 */ 380 static int snd_ps3_mute(int mute_on) 381 { 382 return ps3av_audio_mute(mute_on); 383 } 384 385 /* 386 * PCM operators 387 */ 388 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream) 389 { 390 struct snd_pcm_runtime *runtime = substream->runtime; 391 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 392 int pcm_index; 393 394 pcm_index = substream->pcm->device; 395 /* to retrieve substream/runtime in interrupt handler */ 396 card->substream = substream; 397 398 runtime->hw = snd_ps3_pcm_hw; 399 400 card->start_delay = snd_ps3_start_delay; 401 402 /* mute off */ 403 snd_ps3_mute(0); /* this function sleep */ 404 405 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 406 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2); 407 return 0; 408 }; 409 410 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 411 struct snd_pcm_hw_params *hw_params) 412 { 413 size_t size; 414 415 /* alloc transport buffer */ 416 size = params_buffer_bytes(hw_params); 417 snd_pcm_lib_malloc_pages(substream, size); 418 return 0; 419 }; 420 421 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream, 422 unsigned int delay_ms) 423 { 424 int ret; 425 int rate ; 426 427 rate = substream->runtime->rate; 428 ret = snd_pcm_format_size(substream->runtime->format, 429 rate * delay_ms / 1000) 430 * substream->runtime->channels; 431 432 pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n", 433 __func__, 434 delay_ms, 435 rate, 436 snd_pcm_format_size(substream->runtime->format, rate), 437 rate * delay_ms / 1000, 438 ret); 439 440 return ret; 441 }; 442 443 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream) 444 { 445 struct snd_pcm_runtime *runtime = substream->runtime; 446 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 447 unsigned long irqsave; 448 449 if (!snd_ps3_set_avsetting(substream)) { 450 /* some parameter changed */ 451 write_reg(PS3_AUDIO_AX_IE, 452 PS3_AUDIO_AX_IE_ASOBEIE(0) | 453 PS3_AUDIO_AX_IE_ASOBUIE(0)); 454 /* 455 * let SPDIF device re-lock with SPDIF signal, 456 * start with some silence 457 */ 458 card->silent = snd_ps3_delay_to_bytes(substream, 459 card->start_delay) / 460 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */ 461 } 462 463 /* restart ring buffer pointer */ 464 spin_lock_irqsave(&card->dma_lock, irqsave); 465 { 466 card->dma_buffer_size = runtime->dma_bytes; 467 468 card->dma_last_transfer_vaddr[SND_PS3_CH_L] = 469 card->dma_next_transfer_vaddr[SND_PS3_CH_L] = 470 card->dma_start_vaddr[SND_PS3_CH_L] = 471 runtime->dma_area; 472 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr; 473 474 card->dma_last_transfer_vaddr[SND_PS3_CH_R] = 475 card->dma_next_transfer_vaddr[SND_PS3_CH_R] = 476 card->dma_start_vaddr[SND_PS3_CH_R] = 477 runtime->dma_area + (runtime->dma_bytes / 2); 478 card->dma_start_bus_addr[SND_PS3_CH_R] = 479 runtime->dma_addr + (runtime->dma_bytes / 2); 480 481 pr_debug("%s: vaddr=%p bus=%#lx\n", __func__, 482 card->dma_start_vaddr[SND_PS3_CH_L], 483 card->dma_start_bus_addr[SND_PS3_CH_L]); 484 485 } 486 spin_unlock_irqrestore(&card->dma_lock, irqsave); 487 488 /* ensure the hardware sees the change */ 489 mb(); 490 491 return 0; 492 }; 493 494 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 495 int cmd) 496 { 497 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 498 int ret = 0; 499 500 switch (cmd) { 501 case SNDRV_PCM_TRIGGER_START: 502 /* clear outstanding interrupts */ 503 update_reg(PS3_AUDIO_AX_IS, 0); 504 505 spin_lock(&card->dma_lock); 506 { 507 card->running = 1; 508 } 509 spin_unlock(&card->dma_lock); 510 511 snd_ps3_program_dma(card, 512 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 513 snd_ps3_kick_dma(card); 514 while (read_reg(PS3_AUDIO_KICK(7)) & 515 PS3_AUDIO_KICK_STATUS_MASK) { 516 udelay(1); 517 } 518 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 519 snd_ps3_kick_dma(card); 520 break; 521 522 case SNDRV_PCM_TRIGGER_STOP: 523 spin_lock(&card->dma_lock); 524 { 525 card->running = 0; 526 } 527 spin_unlock(&card->dma_lock); 528 snd_ps3_wait_for_dma_stop(card); 529 break; 530 default: 531 break; 532 533 } 534 535 return ret; 536 }; 537 538 /* 539 * report current pointer 540 */ 541 static snd_pcm_uframes_t snd_ps3_pcm_pointer( 542 struct snd_pcm_substream *substream) 543 { 544 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 545 size_t bytes; 546 snd_pcm_uframes_t ret; 547 548 spin_lock(&card->dma_lock); 549 { 550 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] - 551 card->dma_start_vaddr[SND_PS3_CH_L]); 552 } 553 spin_unlock(&card->dma_lock); 554 555 ret = bytes_to_frames(substream->runtime, bytes * 2); 556 557 return ret; 558 }; 559 560 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream) 561 { 562 int ret; 563 ret = snd_pcm_lib_free_pages(substream); 564 return ret; 565 }; 566 567 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream) 568 { 569 /* mute on */ 570 snd_ps3_mute(1); 571 return 0; 572 }; 573 574 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card) 575 { 576 /* 577 * avsetting driver seems to never change the followings 578 * so, init them here once 579 */ 580 581 /* no dma interrupt needed */ 582 write_reg(PS3_AUDIO_INTR_EN_0, 0); 583 584 /* use every 4 buffer empty interrupt */ 585 update_mask_reg(PS3_AUDIO_AX_IC, 586 PS3_AUDIO_AX_IC_AASOIMD_MASK, 587 PS3_AUDIO_AX_IC_AASOIMD_EVERY4); 588 589 /* enable 3wire clocks */ 590 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 591 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED | 592 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED), 593 0); 594 update_reg(PS3_AUDIO_AO_3WMCTRL, 595 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT); 596 } 597 598 /* 599 * av setting 600 * NOTE: calling this function may generate audio interrupt. 601 */ 602 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card) 603 { 604 int ret, retries, i; 605 pr_debug("%s: start\n", __func__); 606 607 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch, 608 card->avs.avs_audio_rate, 609 card->avs.avs_audio_width, 610 card->avs.avs_audio_format, 611 card->avs.avs_audio_source); 612 /* 613 * Reset the following unwanted settings: 614 */ 615 616 /* disable all 3wire buffers */ 617 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 618 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) | 619 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) | 620 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) | 621 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)), 622 0); 623 wmb(); /* ensure the hardware sees the change */ 624 /* wait for actually stopped */ 625 retries = 1000; 626 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) & 627 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) | 628 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) | 629 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) | 630 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) && 631 --retries) { 632 udelay(1); 633 } 634 635 /* reset buffer pointer */ 636 for (i = 0; i < 4; i++) { 637 update_reg(PS3_AUDIO_AO_3WCTRL(i), 638 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET); 639 udelay(10); 640 } 641 wmb(); /* ensure the hardware actually start resetting */ 642 643 /* enable 3wire#0 buffer */ 644 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0)); 645 646 647 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */ 648 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0), 649 ~PS3_AUDIO_AO_3WCTRL_ASODF, 650 PS3_AUDIO_AO_3WCTRL_ASODF_LSB); 651 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0), 652 ~PS3_AUDIO_AO_SPDCTRL_SPODF, 653 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB); 654 /* ensure all the setting above is written back to register */ 655 wmb(); 656 /* avsetting driver altered AX_IE, caller must reset it if you want */ 657 pr_debug("%s: end\n", __func__); 658 return ret; 659 } 660 661 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card) 662 { 663 int ret; 664 pr_debug("%s: start\n", __func__); 665 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2; 666 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 667 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 668 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM; 669 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL; 670 671 ret = snd_ps3_change_avsetting(card); 672 673 snd_ps3_audio_fixup(card); 674 675 /* to start to generate SPDIF signal, fill data */ 676 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 677 snd_ps3_kick_dma(card); 678 pr_debug("%s: end\n", __func__); 679 return ret; 680 } 681 682 /* 683 * set sampling rate according to the substream 684 */ 685 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream) 686 { 687 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 688 struct snd_ps3_avsetting_info avs; 689 690 avs = card->avs; 691 692 pr_debug("%s: called freq=%d width=%d\n", __func__, 693 substream->runtime->rate, 694 snd_pcm_format_width(substream->runtime->format)); 695 696 pr_debug("%s: before freq=%d width=%d\n", __func__, 697 card->avs.avs_audio_rate, card->avs.avs_audio_width); 698 699 /* sample rate */ 700 switch (substream->runtime->rate) { 701 case 44100: 702 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K; 703 break; 704 case 48000: 705 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 706 break; 707 case 88200: 708 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K; 709 break; 710 case 96000: 711 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K; 712 break; 713 default: 714 pr_info("%s: invalid rate %d\n", __func__, 715 substream->runtime->rate); 716 return 1; 717 } 718 719 /* width */ 720 switch (snd_pcm_format_width(substream->runtime->format)) { 721 case 16: 722 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 723 break; 724 case 24: 725 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24; 726 break; 727 default: 728 pr_info("%s: invalid width %d\n", __func__, 729 snd_pcm_format_width(substream->runtime->format)); 730 return 1; 731 } 732 733 if ((card->avs.avs_audio_width != avs.avs_audio_width) || 734 (card->avs.avs_audio_rate != avs.avs_audio_rate)) { 735 card->avs = avs; 736 snd_ps3_change_avsetting(card); 737 738 pr_debug("%s: after freq=%d width=%d\n", __func__, 739 card->avs.avs_audio_rate, card->avs.avs_audio_width); 740 741 return 0; 742 } else 743 return 1; 744 } 745 746 747 748 static int snd_ps3_map_mmio(void) 749 { 750 the_card.mapped_mmio_vaddr = 751 ioremap(the_card.ps3_dev->m_region->bus_addr, 752 the_card.ps3_dev->m_region->len); 753 754 if (!the_card.mapped_mmio_vaddr) { 755 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n", 756 __func__, the_card.ps3_dev->m_region->lpar_addr, 757 the_card.ps3_dev->m_region->len); 758 return -ENXIO; 759 } 760 761 return 0; 762 }; 763 764 static void snd_ps3_unmap_mmio(void) 765 { 766 iounmap(the_card.mapped_mmio_vaddr); 767 the_card.mapped_mmio_vaddr = NULL; 768 } 769 770 static int snd_ps3_allocate_irq(void) 771 { 772 int ret; 773 u64 lpar_addr, lpar_size; 774 u64 __iomem *mapped; 775 776 /* FIXME: move this to device_init (H/W probe) */ 777 778 /* get irq outlet */ 779 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size); 780 if (ret) { 781 pr_info("%s: device map 1 failed %d\n", __func__, 782 ret); 783 return -ENXIO; 784 } 785 786 mapped = ioremap(lpar_addr, lpar_size); 787 if (!mapped) { 788 pr_info("%s: ioremap 1 failed \n", __func__); 789 return -ENXIO; 790 } 791 792 the_card.audio_irq_outlet = in_be64(mapped); 793 794 iounmap(mapped); 795 ret = lv1_gpu_device_unmap(1); 796 if (ret) 797 pr_info("%s: unmap 1 failed\n", __func__); 798 799 /* irq */ 800 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, 801 the_card.audio_irq_outlet, 802 &the_card.irq_no); 803 if (ret) { 804 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret); 805 return ret; 806 } 807 808 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED, 809 SND_PS3_DRIVER_NAME, &the_card); 810 if (ret) { 811 pr_info("%s: request_irq failed (%d)\n", __func__, ret); 812 goto cleanup_irq; 813 } 814 815 return 0; 816 817 cleanup_irq: 818 ps3_irq_plug_destroy(the_card.irq_no); 819 return ret; 820 }; 821 822 static void snd_ps3_free_irq(void) 823 { 824 free_irq(the_card.irq_no, &the_card); 825 ps3_irq_plug_destroy(the_card.irq_no); 826 } 827 828 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start) 829 { 830 uint64_t val; 831 int ret; 832 833 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) | 834 (0x03UL << 24) | 835 (0x0fUL << 12) | 836 (PS3_AUDIO_IOID); 837 838 ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0); 839 if (ret) 840 pr_info("%s: gpu_attribute failed %d\n", __func__, 841 ret); 842 } 843 844 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev) 845 { 846 int ret; 847 u64 lpar_addr, lpar_size; 848 849 BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1)); 850 BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND); 851 852 the_card.ps3_dev = dev; 853 854 ret = ps3_open_hv_device(dev); 855 856 if (ret) 857 return -ENXIO; 858 859 /* setup MMIO */ 860 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size); 861 if (ret) { 862 pr_info("%s: device map 2 failed %d\n", __func__, ret); 863 goto clean_open; 864 } 865 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size, 866 PAGE_SHIFT); 867 868 ret = snd_ps3_map_mmio(); 869 if (ret) 870 goto clean_dev_map; 871 872 /* setup DMA area */ 873 ps3_dma_region_init(dev, dev->d_region, 874 PAGE_SHIFT, /* use system page size */ 875 0, /* dma type; not used */ 876 NULL, 877 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE)); 878 dev->d_region->ioid = PS3_AUDIO_IOID; 879 880 ret = ps3_dma_region_create(dev->d_region); 881 if (ret) { 882 pr_info("%s: region_create\n", __func__); 883 goto clean_mmio; 884 } 885 886 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr); 887 888 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */ 889 the_card.start_delay = snd_ps3_start_delay; 890 891 /* irq */ 892 if (snd_ps3_allocate_irq()) { 893 ret = -ENXIO; 894 goto clean_dma_region; 895 } 896 897 /* create card instance */ 898 the_card.card = snd_card_new(index, id, THIS_MODULE, 0); 899 if (!the_card.card) { 900 ret = -ENXIO; 901 goto clean_irq; 902 } 903 904 strcpy(the_card.card->driver, "PS3"); 905 strcpy(the_card.card->shortname, "PS3"); 906 strcpy(the_card.card->longname, "PS3 sound"); 907 /* create PCM devices instance */ 908 /* NOTE:this driver works assuming pcm:substream = 1:1 */ 909 ret = snd_pcm_new(the_card.card, 910 "SPDIF", 911 0, /* instance index, will be stored pcm.device*/ 912 1, /* output substream */ 913 0, /* input substream */ 914 &(the_card.pcm)); 915 if (ret) 916 goto clean_card; 917 918 the_card.pcm->private_data = &the_card; 919 strcpy(the_card.pcm->name, "SPDIF"); 920 921 /* set pcm ops */ 922 snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK, 923 &snd_ps3_pcm_spdif_ops); 924 925 the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED; 926 /* pre-alloc PCM DMA buffer*/ 927 ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm, 928 SNDRV_DMA_TYPE_DEV, 929 &dev->core, 930 SND_PS3_PCM_PREALLOC_SIZE, 931 SND_PS3_PCM_PREALLOC_SIZE); 932 if (ret < 0) { 933 pr_info("%s: prealloc failed\n", __func__); 934 goto clean_card; 935 } 936 937 /* 938 * allocate null buffer 939 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2 940 * PAGE_SIZE is enogh 941 */ 942 if (!(the_card.null_buffer_start_vaddr = 943 dma_alloc_coherent(&the_card.ps3_dev->core, 944 PAGE_SIZE, 945 &the_card.null_buffer_start_dma_addr, 946 GFP_KERNEL))) { 947 pr_info("%s: nullbuffer alloc failed\n", __func__); 948 goto clean_preallocate; 949 } 950 pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__, 951 the_card.null_buffer_start_vaddr, 952 the_card.null_buffer_start_dma_addr); 953 /* set default sample rate/word width */ 954 snd_ps3_init_avsetting(&the_card); 955 956 /* register the card */ 957 ret = snd_card_register(the_card.card); 958 if (ret < 0) 959 goto clean_dma_map; 960 961 pr_info("%s started. start_delay=%dms\n", 962 the_card.card->longname, the_card.start_delay); 963 return 0; 964 965 clean_dma_map: 966 dma_free_coherent(&the_card.ps3_dev->core, 967 PAGE_SIZE, 968 the_card.null_buffer_start_vaddr, 969 the_card.null_buffer_start_dma_addr); 970 clean_preallocate: 971 snd_pcm_lib_preallocate_free_for_all(the_card.pcm); 972 clean_card: 973 snd_card_free(the_card.card); 974 clean_irq: 975 snd_ps3_free_irq(); 976 clean_dma_region: 977 ps3_dma_region_free(dev->d_region); 978 clean_mmio: 979 snd_ps3_unmap_mmio(); 980 clean_dev_map: 981 lv1_gpu_device_unmap(2); 982 clean_open: 983 ps3_close_hv_device(dev); 984 /* 985 * there is no destructor function to pcm. 986 * midlayer automatically releases if the card removed 987 */ 988 return ret; 989 }; /* snd_ps3_probe */ 990 991 /* called when module removal */ 992 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev) 993 { 994 int ret; 995 pr_info("%s:start id=%d\n", __func__, dev->match_id); 996 if (dev->match_id != PS3_MATCH_ID_SOUND) 997 return -ENXIO; 998 999 /* 1000 * ctl and preallocate buffer will be freed in 1001 * snd_card_free 1002 */ 1003 ret = snd_card_free(the_card.card); 1004 if (ret) 1005 pr_info("%s: ctl freecard=%d\n", __func__, ret); 1006 1007 dma_free_coherent(&dev->core, 1008 PAGE_SIZE, 1009 the_card.null_buffer_start_vaddr, 1010 the_card.null_buffer_start_dma_addr); 1011 1012 ps3_dma_region_free(dev->d_region); 1013 1014 snd_ps3_free_irq(); 1015 snd_ps3_unmap_mmio(); 1016 1017 lv1_gpu_device_unmap(2); 1018 ps3_close_hv_device(dev); 1019 pr_info("%s:end id=%d\n", __func__, dev->match_id); 1020 return 0; 1021 } /* snd_ps3_remove */ 1022 1023 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = { 1024 .match_id = PS3_MATCH_ID_SOUND, 1025 .probe = snd_ps3_driver_probe, 1026 .remove = snd_ps3_driver_remove, 1027 .shutdown = snd_ps3_driver_remove, 1028 .core = { 1029 .name = SND_PS3_DRIVER_NAME, 1030 .owner = THIS_MODULE, 1031 }, 1032 }; 1033 1034 1035 /* 1036 * Interrupt handler 1037 */ 1038 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id) 1039 { 1040 1041 uint32_t port_intr; 1042 int underflow_occured = 0; 1043 struct snd_ps3_card_info *card = dev_id; 1044 1045 if (!card->running) { 1046 update_reg(PS3_AUDIO_AX_IS, 0); 1047 update_reg(PS3_AUDIO_INTR_0, 0); 1048 return IRQ_HANDLED; 1049 } 1050 1051 port_intr = read_reg(PS3_AUDIO_AX_IS); 1052 /* 1053 *serial buffer empty detected (every 4 times), 1054 *program next dma and kick it 1055 */ 1056 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) { 1057 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0)); 1058 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 1059 write_reg(PS3_AUDIO_AX_IS, port_intr); 1060 underflow_occured = 1; 1061 } 1062 if (card->silent) { 1063 /* we are still in silent time */ 1064 snd_ps3_program_dma(card, 1065 (underflow_occured) ? 1066 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL : 1067 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 1068 snd_ps3_kick_dma(card); 1069 card->silent --; 1070 } else { 1071 snd_ps3_program_dma(card, 1072 (underflow_occured) ? 1073 SND_PS3_DMA_FILLTYPE_FIRSTFILL : 1074 SND_PS3_DMA_FILLTYPE_RUNNING); 1075 snd_ps3_kick_dma(card); 1076 snd_pcm_period_elapsed(card->substream); 1077 } 1078 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 1079 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0)); 1080 /* 1081 * serial out underflow, but buffer empty not detected. 1082 * in this case, fill fifo with 0 to recover. After 1083 * filling dummy data, serial automatically start to 1084 * consume them and then will generate normal buffer 1085 * empty interrupts. 1086 * If both buffer underflow and buffer empty are occured, 1087 * it is better to do nomal data transfer than empty one 1088 */ 1089 snd_ps3_program_dma(card, 1090 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 1091 snd_ps3_kick_dma(card); 1092 snd_ps3_program_dma(card, 1093 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 1094 snd_ps3_kick_dma(card); 1095 } 1096 /* clear interrupt cause */ 1097 return IRQ_HANDLED; 1098 }; 1099 1100 /* 1101 * module/subsystem initialize/terminate 1102 */ 1103 static int __init snd_ps3_init(void) 1104 { 1105 int ret; 1106 1107 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 1108 return -ENXIO; 1109 1110 memset(&the_card, 0, sizeof(the_card)); 1111 spin_lock_init(&the_card.dma_lock); 1112 1113 /* register systembus DRIVER, this calls our probe() func */ 1114 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info); 1115 1116 return ret; 1117 } 1118 1119 static void __exit snd_ps3_exit(void) 1120 { 1121 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info); 1122 } 1123 1124 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND); 1125