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/core.h> 26 #include <sound/initval.h> 27 #include <sound/pcm.h> 28 #include <sound/asound.h> 29 #include <sound/memalloc.h> 30 #include <sound/pcm_params.h> 31 #include <sound/control.h> 32 #include <linux/dmapool.h> 33 #include <linux/dma-mapping.h> 34 #include <asm/firmware.h> 35 #include <asm/dma.h> 36 #include <asm/lv1call.h> 37 #include <asm/ps3.h> 38 #include <asm/ps3av.h> 39 40 #include "snd_ps3_reg.h" 41 #include "snd_ps3.h" 42 43 MODULE_LICENSE("GPL v2"); 44 MODULE_DESCRIPTION("PS3 sound driver"); 45 MODULE_AUTHOR("Sony Computer Entertainment Inc."); 46 47 /* module entries */ 48 static int __init snd_ps3_init(void); 49 static void __exit snd_ps3_exit(void); 50 51 /* ALSA snd driver ops */ 52 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream); 53 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream); 54 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream); 55 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 56 int cmd); 57 static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream 58 *substream); 59 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 60 struct snd_pcm_hw_params *hw_params); 61 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream); 62 63 64 /* ps3_system_bus_driver entries */ 65 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev); 66 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev); 67 68 /* address setup */ 69 static int snd_ps3_map_mmio(void); 70 static void snd_ps3_unmap_mmio(void); 71 static int snd_ps3_allocate_irq(void); 72 static void snd_ps3_free_irq(void); 73 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start); 74 75 /* interrupt handler */ 76 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id); 77 78 79 /* set sampling rate/format */ 80 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream); 81 /* take effect parameter change */ 82 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card); 83 /* initialize avsetting and take it effect */ 84 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card); 85 /* setup dma */ 86 static int snd_ps3_program_dma(struct snd_ps3_card_info *card, 87 enum snd_ps3_dma_filltype filltype); 88 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card); 89 90 static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void *vaddr, int ch); 91 92 93 module_init(snd_ps3_init); 94 module_exit(snd_ps3_exit); 95 96 /* 97 * global 98 */ 99 static struct snd_ps3_card_info the_card; 100 101 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY; 102 103 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644); 104 MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec"); 105 106 static int index = SNDRV_DEFAULT_IDX1; 107 static char *id = SNDRV_DEFAULT_STR1; 108 109 module_param(index, int, 0444); 110 MODULE_PARM_DESC(index, "Index value for PS3 soundchip."); 111 module_param(id, charp, 0444); 112 MODULE_PARM_DESC(id, "ID string for PS3 soundchip."); 113 114 115 /* 116 * PS3 audio register access 117 */ 118 static inline u32 read_reg(unsigned int reg) 119 { 120 return in_be32(the_card.mapped_mmio_vaddr + reg); 121 } 122 static inline void write_reg(unsigned int reg, u32 val) 123 { 124 out_be32(the_card.mapped_mmio_vaddr + reg, val); 125 } 126 static inline void update_reg(unsigned int reg, u32 or_val) 127 { 128 u32 newval = read_reg(reg) | or_val; 129 write_reg(reg, newval); 130 } 131 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val) 132 { 133 u32 newval = (read_reg(reg) & mask) | or_val; 134 write_reg(reg, newval); 135 } 136 137 /* 138 * ALSA defs 139 */ 140 static const struct snd_pcm_hardware snd_ps3_pcm_hw = { 141 .info = (SNDRV_PCM_INFO_MMAP | 142 SNDRV_PCM_INFO_NONINTERLEAVED | 143 SNDRV_PCM_INFO_MMAP_VALID), 144 .formats = (SNDRV_PCM_FMTBIT_S16_BE | 145 SNDRV_PCM_FMTBIT_S24_BE), 146 .rates = (SNDRV_PCM_RATE_44100 | 147 SNDRV_PCM_RATE_48000 | 148 SNDRV_PCM_RATE_88200 | 149 SNDRV_PCM_RATE_96000), 150 .rate_min = 44100, 151 .rate_max = 96000, 152 153 .channels_min = 2, /* stereo only */ 154 .channels_max = 2, 155 156 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64, 157 158 /* interrupt by four stages */ 159 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 160 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 161 162 .periods_min = 16, 163 .periods_max = 32, /* buffer_size_max/ period_bytes_max */ 164 165 .fifo_size = PS3_AUDIO_FIFO_SIZE 166 }; 167 168 static struct snd_pcm_ops snd_ps3_pcm_spdif_ops = 169 { 170 .open = snd_ps3_pcm_open, 171 .close = snd_ps3_pcm_close, 172 .prepare = snd_ps3_pcm_prepare, 173 .ioctl = snd_pcm_lib_ioctl, 174 .trigger = snd_ps3_pcm_trigger, 175 .pointer = snd_ps3_pcm_pointer, 176 .hw_params = snd_ps3_pcm_hw_params, 177 .hw_free = snd_ps3_pcm_hw_free 178 }; 179 180 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card, 181 int count, int force_stop) 182 { 183 int dma_ch, done, retries, stop_forced = 0; 184 uint32_t status; 185 186 for (dma_ch = 0; dma_ch < 8; dma_ch ++) { 187 retries = count; 188 do { 189 status = read_reg(PS3_AUDIO_KICK(dma_ch)) & 190 PS3_AUDIO_KICK_STATUS_MASK; 191 switch (status) { 192 case PS3_AUDIO_KICK_STATUS_DONE: 193 case PS3_AUDIO_KICK_STATUS_NOTIFY: 194 case PS3_AUDIO_KICK_STATUS_CLEAR: 195 case PS3_AUDIO_KICK_STATUS_ERROR: 196 done = 1; 197 break; 198 default: 199 done = 0; 200 udelay(10); 201 } 202 } while (!done && --retries); 203 if (!retries && force_stop) { 204 pr_info("%s: DMA ch %d is not stopped.", 205 __func__, dma_ch); 206 /* last resort. force to stop dma. 207 * NOTE: this cause DMA done interrupts 208 */ 209 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR); 210 stop_forced = 1; 211 } 212 } 213 return stop_forced; 214 } 215 216 /* 217 * wait for all dma is done. 218 * NOTE: caller should reset card->running before call. 219 * If not, the interrupt handler will re-start DMA, 220 * then DMA is never stopped. 221 */ 222 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card) 223 { 224 int stop_forced; 225 /* 226 * wait for the last dma is done 227 */ 228 229 /* 230 * expected maximum DMA done time is 5.7ms + something (DMA itself). 231 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next 232 * DMA kick event would occur. 233 */ 234 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1); 235 236 /* 237 * clear outstanding interrupts. 238 */ 239 update_reg(PS3_AUDIO_INTR_0, 0); 240 update_reg(PS3_AUDIO_AX_IS, 0); 241 242 /* 243 *revert CLEAR bit since it will not reset automatically after DMA stop 244 */ 245 if (stop_forced) 246 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0); 247 /* ensure the hardware sees changes */ 248 wmb(); 249 } 250 251 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card) 252 { 253 254 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST); 255 /* ensure the hardware sees the change */ 256 wmb(); 257 } 258 259 /* 260 * convert virtual addr to ioif bus addr. 261 */ 262 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card, 263 void * paddr, 264 int ch) 265 { 266 return card->dma_start_bus_addr[ch] + 267 (paddr - card->dma_start_vaddr[ch]); 268 }; 269 270 271 /* 272 * increment ring buffer pointer. 273 * NOTE: caller must hold write spinlock 274 */ 275 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card, 276 enum snd_ps3_ch ch, size_t byte_count, 277 int stage) 278 { 279 if (!stage) 280 card->dma_last_transfer_vaddr[ch] = 281 card->dma_next_transfer_vaddr[ch]; 282 card->dma_next_transfer_vaddr[ch] += byte_count; 283 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <= 284 card->dma_next_transfer_vaddr[ch]) { 285 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch]; 286 } 287 } 288 /* 289 * setup dmac to send data to audio and attenuate samples on the ring buffer 290 */ 291 static int snd_ps3_program_dma(struct snd_ps3_card_info *card, 292 enum snd_ps3_dma_filltype filltype) 293 { 294 /* this dmac does not support over 4G */ 295 uint32_t dma_addr; 296 int fill_stages, dma_ch, stage; 297 enum snd_ps3_ch ch; 298 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */ 299 void *start_vaddr; 300 unsigned long irqsave; 301 int silent = 0; 302 303 switch (filltype) { 304 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL: 305 silent = 1; 306 /* intentionally fall thru */ 307 case SND_PS3_DMA_FILLTYPE_FIRSTFILL: 308 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS; 309 break; 310 311 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING: 312 silent = 1; 313 /* intentionally fall thru */ 314 case SND_PS3_DMA_FILLTYPE_RUNNING: 315 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY; 316 break; 317 } 318 319 snd_ps3_verify_dma_stop(card, 700, 0); 320 fill_stages = 4; 321 spin_lock_irqsave(&card->dma_lock, irqsave); 322 for (ch = 0; ch < 2; ch++) { 323 start_vaddr = card->dma_next_transfer_vaddr[0]; 324 for (stage = 0; stage < fill_stages; stage ++) { 325 dma_ch = stage * 2 + ch; 326 if (silent) 327 dma_addr = card->null_buffer_start_dma_addr; 328 else 329 dma_addr = 330 v_to_bus(card, 331 card->dma_next_transfer_vaddr[ch], 332 ch); 333 334 write_reg(PS3_AUDIO_SOURCE(dma_ch), 335 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY | 336 dma_addr)); 337 338 /* dst: fixed to 3wire#0 */ 339 if (ch == 0) 340 write_reg(PS3_AUDIO_DEST(dma_ch), 341 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 342 PS3_AUDIO_AO_3W_LDATA(0))); 343 else 344 write_reg(PS3_AUDIO_DEST(dma_ch), 345 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 346 PS3_AUDIO_AO_3W_RDATA(0))); 347 348 /* count always 1 DMA block (1/2 stage = 128 bytes) */ 349 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0); 350 /* bump pointer if needed */ 351 if (!silent) 352 snd_ps3_bump_buffer(card, ch, 353 PS3_AUDIO_DMAC_BLOCK_SIZE, 354 stage); 355 356 /* kick event */ 357 if (dma_ch == 0) 358 write_reg(PS3_AUDIO_KICK(dma_ch), 359 ch0_kick_event); 360 else 361 write_reg(PS3_AUDIO_KICK(dma_ch), 362 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch 363 - 1) | 364 PS3_AUDIO_KICK_REQUEST); 365 } 366 } 367 /* ensure the hardware sees the change */ 368 wmb(); 369 spin_unlock_irqrestore(&card->dma_lock, irqsave); 370 371 return 0; 372 } 373 374 /* 375 * audio mute on/off 376 * mute_on : 0 output enabled 377 * 1 mute 378 */ 379 static int snd_ps3_mute(int mute_on) 380 { 381 return ps3av_audio_mute(mute_on); 382 } 383 384 /* 385 * PCM operators 386 */ 387 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream) 388 { 389 struct snd_pcm_runtime *runtime = substream->runtime; 390 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 391 int pcm_index; 392 393 pcm_index = substream->pcm->device; 394 /* to retrieve substream/runtime in interrupt handler */ 395 card->substream = substream; 396 397 runtime->hw = snd_ps3_pcm_hw; 398 399 card->start_delay = snd_ps3_start_delay; 400 401 /* mute off */ 402 snd_ps3_mute(0); /* this function sleep */ 403 404 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 405 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2); 406 return 0; 407 }; 408 409 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 410 struct snd_pcm_hw_params *hw_params) 411 { 412 size_t size; 413 414 /* alloc transport buffer */ 415 size = params_buffer_bytes(hw_params); 416 snd_pcm_lib_malloc_pages(substream, size); 417 return 0; 418 }; 419 420 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream, 421 unsigned int delay_ms) 422 { 423 int ret; 424 int rate ; 425 426 rate = substream->runtime->rate; 427 ret = snd_pcm_format_size(substream->runtime->format, 428 rate * delay_ms / 1000) 429 * substream->runtime->channels; 430 431 pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n", 432 __func__, 433 delay_ms, 434 rate, 435 snd_pcm_format_size(substream->runtime->format, rate), 436 rate * delay_ms / 1000, 437 ret); 438 439 return ret; 440 }; 441 442 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream) 443 { 444 struct snd_pcm_runtime *runtime = substream->runtime; 445 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 446 unsigned long irqsave; 447 448 if (!snd_ps3_set_avsetting(substream)) { 449 /* some parameter changed */ 450 write_reg(PS3_AUDIO_AX_IE, 451 PS3_AUDIO_AX_IE_ASOBEIE(0) | 452 PS3_AUDIO_AX_IE_ASOBUIE(0)); 453 /* 454 * let SPDIF device re-lock with SPDIF signal, 455 * start with some silence 456 */ 457 card->silent = snd_ps3_delay_to_bytes(substream, 458 card->start_delay) / 459 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */ 460 } 461 462 /* restart ring buffer pointer */ 463 spin_lock_irqsave(&card->dma_lock, irqsave); 464 { 465 card->dma_buffer_size = runtime->dma_bytes; 466 467 card->dma_last_transfer_vaddr[SND_PS3_CH_L] = 468 card->dma_next_transfer_vaddr[SND_PS3_CH_L] = 469 card->dma_start_vaddr[SND_PS3_CH_L] = 470 runtime->dma_area; 471 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr; 472 473 card->dma_last_transfer_vaddr[SND_PS3_CH_R] = 474 card->dma_next_transfer_vaddr[SND_PS3_CH_R] = 475 card->dma_start_vaddr[SND_PS3_CH_R] = 476 runtime->dma_area + (runtime->dma_bytes / 2); 477 card->dma_start_bus_addr[SND_PS3_CH_R] = 478 runtime->dma_addr + (runtime->dma_bytes / 2); 479 480 pr_debug("%s: vaddr=%p bus=%#lx\n", __func__, 481 card->dma_start_vaddr[SND_PS3_CH_L], 482 card->dma_start_bus_addr[SND_PS3_CH_L]); 483 484 } 485 spin_unlock_irqrestore(&card->dma_lock, irqsave); 486 487 /* ensure the hardware sees the change */ 488 mb(); 489 490 return 0; 491 }; 492 493 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 494 int cmd) 495 { 496 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 497 int ret = 0; 498 499 switch (cmd) { 500 case SNDRV_PCM_TRIGGER_START: 501 /* clear outstanding interrupts */ 502 update_reg(PS3_AUDIO_AX_IS, 0); 503 504 spin_lock(&card->dma_lock); 505 { 506 card->running = 1; 507 } 508 spin_unlock(&card->dma_lock); 509 510 snd_ps3_program_dma(card, 511 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 512 snd_ps3_kick_dma(card); 513 while (read_reg(PS3_AUDIO_KICK(7)) & 514 PS3_AUDIO_KICK_STATUS_MASK) { 515 udelay(1); 516 } 517 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 518 snd_ps3_kick_dma(card); 519 break; 520 521 case SNDRV_PCM_TRIGGER_STOP: 522 spin_lock(&card->dma_lock); 523 { 524 card->running = 0; 525 } 526 spin_unlock(&card->dma_lock); 527 snd_ps3_wait_for_dma_stop(card); 528 break; 529 default: 530 break; 531 532 } 533 534 return ret; 535 }; 536 537 /* 538 * report current pointer 539 */ 540 static snd_pcm_uframes_t snd_ps3_pcm_pointer( 541 struct snd_pcm_substream *substream) 542 { 543 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 544 size_t bytes; 545 snd_pcm_uframes_t ret; 546 547 spin_lock(&card->dma_lock); 548 { 549 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] - 550 card->dma_start_vaddr[SND_PS3_CH_L]); 551 } 552 spin_unlock(&card->dma_lock); 553 554 ret = bytes_to_frames(substream->runtime, bytes * 2); 555 556 return ret; 557 }; 558 559 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream) 560 { 561 int ret; 562 ret = snd_pcm_lib_free_pages(substream); 563 return ret; 564 }; 565 566 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream) 567 { 568 /* mute on */ 569 snd_ps3_mute(1); 570 return 0; 571 }; 572 573 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card) 574 { 575 /* 576 * avsetting driver seems to never change the followings 577 * so, init them here once 578 */ 579 580 /* no dma interrupt needed */ 581 write_reg(PS3_AUDIO_INTR_EN_0, 0); 582 583 /* use every 4 buffer empty interrupt */ 584 update_mask_reg(PS3_AUDIO_AX_IC, 585 PS3_AUDIO_AX_IC_AASOIMD_MASK, 586 PS3_AUDIO_AX_IC_AASOIMD_EVERY4); 587 588 /* enable 3wire clocks */ 589 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 590 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED | 591 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED), 592 0); 593 update_reg(PS3_AUDIO_AO_3WMCTRL, 594 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT); 595 } 596 597 /* 598 * av setting 599 * NOTE: calling this function may generate audio interrupt. 600 */ 601 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card) 602 { 603 int ret, retries, i; 604 pr_debug("%s: start\n", __func__); 605 606 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch, 607 card->avs.avs_audio_rate, 608 card->avs.avs_audio_width, 609 card->avs.avs_audio_format, 610 card->avs.avs_audio_source); 611 /* 612 * Reset the following unwanted settings: 613 */ 614 615 /* disable all 3wire buffers */ 616 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 617 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) | 618 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) | 619 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) | 620 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)), 621 0); 622 wmb(); /* ensure the hardware sees the change */ 623 /* wait for actually stopped */ 624 retries = 1000; 625 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) & 626 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) | 627 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) | 628 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) | 629 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) && 630 --retries) { 631 udelay(1); 632 } 633 634 /* reset buffer pointer */ 635 for (i = 0; i < 4; i++) { 636 update_reg(PS3_AUDIO_AO_3WCTRL(i), 637 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET); 638 udelay(10); 639 } 640 wmb(); /* ensure the hardware actually start resetting */ 641 642 /* enable 3wire#0 buffer */ 643 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0)); 644 645 646 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */ 647 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0), 648 ~PS3_AUDIO_AO_3WCTRL_ASODF, 649 PS3_AUDIO_AO_3WCTRL_ASODF_LSB); 650 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0), 651 ~PS3_AUDIO_AO_SPDCTRL_SPODF, 652 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB); 653 /* ensure all the setting above is written back to register */ 654 wmb(); 655 /* avsetting driver altered AX_IE, caller must reset it if you want */ 656 pr_debug("%s: end\n", __func__); 657 return ret; 658 } 659 660 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card) 661 { 662 int ret; 663 pr_debug("%s: start\n", __func__); 664 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2; 665 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 666 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 667 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM; 668 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL; 669 memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8); 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 int ret; 690 691 avs = card->avs; 692 693 pr_debug("%s: called freq=%d width=%d\n", __func__, 694 substream->runtime->rate, 695 snd_pcm_format_width(substream->runtime->format)); 696 697 pr_debug("%s: before freq=%d width=%d\n", __func__, 698 card->avs.avs_audio_rate, card->avs.avs_audio_width); 699 700 /* sample rate */ 701 switch (substream->runtime->rate) { 702 case 44100: 703 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K; 704 break; 705 case 48000: 706 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 707 break; 708 case 88200: 709 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K; 710 break; 711 case 96000: 712 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K; 713 break; 714 default: 715 pr_info("%s: invalid rate %d\n", __func__, 716 substream->runtime->rate); 717 return 1; 718 } 719 720 /* width */ 721 switch (snd_pcm_format_width(substream->runtime->format)) { 722 case 16: 723 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 724 break; 725 case 24: 726 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24; 727 break; 728 default: 729 pr_info("%s: invalid width %d\n", __func__, 730 snd_pcm_format_width(substream->runtime->format)); 731 return 1; 732 } 733 734 memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8); 735 736 if (memcmp(&card->avs, &avs, sizeof(avs))) { 737 pr_debug("%s: after freq=%d width=%d\n", __func__, 738 card->avs.avs_audio_rate, card->avs.avs_audio_width); 739 740 card->avs = avs; 741 snd_ps3_change_avsetting(card); 742 ret = 0; 743 } else 744 ret = 1; 745 746 /* check CS non-audio bit and mute accordingly */ 747 if (avs.avs_cs_info[0] & 0x02) 748 ps3av_audio_mute_analog(1); /* mute if non-audio */ 749 else 750 ps3av_audio_mute_analog(0); 751 752 return ret; 753 } 754 755 /* 756 * SPDIF status bits controls 757 */ 758 static int snd_ps3_spdif_mask_info(struct snd_kcontrol *kcontrol, 759 struct snd_ctl_elem_info *uinfo) 760 { 761 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 762 uinfo->count = 1; 763 return 0; 764 } 765 766 /* FIXME: ps3av_set_audio_mode() assumes only consumer mode */ 767 static int snd_ps3_spdif_cmask_get(struct snd_kcontrol *kcontrol, 768 struct snd_ctl_elem_value *ucontrol) 769 { 770 memset(ucontrol->value.iec958.status, 0xff, 8); 771 return 0; 772 } 773 774 static int snd_ps3_spdif_pmask_get(struct snd_kcontrol *kcontrol, 775 struct snd_ctl_elem_value *ucontrol) 776 { 777 return 0; 778 } 779 780 static int snd_ps3_spdif_default_get(struct snd_kcontrol *kcontrol, 781 struct snd_ctl_elem_value *ucontrol) 782 { 783 memcpy(ucontrol->value.iec958.status, ps3av_mode_cs_info, 8); 784 return 0; 785 } 786 787 static int snd_ps3_spdif_default_put(struct snd_kcontrol *kcontrol, 788 struct snd_ctl_elem_value *ucontrol) 789 { 790 if (memcmp(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8)) { 791 memcpy(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8); 792 return 1; 793 } 794 return 0; 795 } 796 797 static struct snd_kcontrol_new spdif_ctls[] = { 798 { 799 .access = SNDRV_CTL_ELEM_ACCESS_READ, 800 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 801 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK), 802 .info = snd_ps3_spdif_mask_info, 803 .get = snd_ps3_spdif_cmask_get, 804 }, 805 { 806 .access = SNDRV_CTL_ELEM_ACCESS_READ, 807 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 808 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK), 809 .info = snd_ps3_spdif_mask_info, 810 .get = snd_ps3_spdif_pmask_get, 811 }, 812 { 813 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 814 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT), 815 .info = snd_ps3_spdif_mask_info, 816 .get = snd_ps3_spdif_default_get, 817 .put = snd_ps3_spdif_default_put, 818 }, 819 }; 820 821 822 static int snd_ps3_map_mmio(void) 823 { 824 the_card.mapped_mmio_vaddr = 825 ioremap(the_card.ps3_dev->m_region->bus_addr, 826 the_card.ps3_dev->m_region->len); 827 828 if (!the_card.mapped_mmio_vaddr) { 829 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n", 830 __func__, the_card.ps3_dev->m_region->lpar_addr, 831 the_card.ps3_dev->m_region->len); 832 return -ENXIO; 833 } 834 835 return 0; 836 }; 837 838 static void snd_ps3_unmap_mmio(void) 839 { 840 iounmap(the_card.mapped_mmio_vaddr); 841 the_card.mapped_mmio_vaddr = NULL; 842 } 843 844 static int snd_ps3_allocate_irq(void) 845 { 846 int ret; 847 u64 lpar_addr, lpar_size; 848 u64 __iomem *mapped; 849 850 /* FIXME: move this to device_init (H/W probe) */ 851 852 /* get irq outlet */ 853 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size); 854 if (ret) { 855 pr_info("%s: device map 1 failed %d\n", __func__, 856 ret); 857 return -ENXIO; 858 } 859 860 mapped = ioremap(lpar_addr, lpar_size); 861 if (!mapped) { 862 pr_info("%s: ioremap 1 failed \n", __func__); 863 return -ENXIO; 864 } 865 866 the_card.audio_irq_outlet = in_be64(mapped); 867 868 iounmap(mapped); 869 ret = lv1_gpu_device_unmap(1); 870 if (ret) 871 pr_info("%s: unmap 1 failed\n", __func__); 872 873 /* irq */ 874 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, 875 the_card.audio_irq_outlet, 876 &the_card.irq_no); 877 if (ret) { 878 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret); 879 return ret; 880 } 881 882 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED, 883 SND_PS3_DRIVER_NAME, &the_card); 884 if (ret) { 885 pr_info("%s: request_irq failed (%d)\n", __func__, ret); 886 goto cleanup_irq; 887 } 888 889 return 0; 890 891 cleanup_irq: 892 ps3_irq_plug_destroy(the_card.irq_no); 893 return ret; 894 }; 895 896 static void snd_ps3_free_irq(void) 897 { 898 free_irq(the_card.irq_no, &the_card); 899 ps3_irq_plug_destroy(the_card.irq_no); 900 } 901 902 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start) 903 { 904 uint64_t val; 905 int ret; 906 907 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) | 908 (0x03UL << 24) | 909 (0x0fUL << 12) | 910 (PS3_AUDIO_IOID); 911 912 ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0); 913 if (ret) 914 pr_info("%s: gpu_attribute failed %d\n", __func__, 915 ret); 916 } 917 918 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev) 919 { 920 int i, ret; 921 u64 lpar_addr, lpar_size; 922 923 BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1)); 924 BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND); 925 926 the_card.ps3_dev = dev; 927 928 ret = ps3_open_hv_device(dev); 929 930 if (ret) 931 return -ENXIO; 932 933 /* setup MMIO */ 934 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size); 935 if (ret) { 936 pr_info("%s: device map 2 failed %d\n", __func__, ret); 937 goto clean_open; 938 } 939 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size, 940 PAGE_SHIFT); 941 942 ret = snd_ps3_map_mmio(); 943 if (ret) 944 goto clean_dev_map; 945 946 /* setup DMA area */ 947 ps3_dma_region_init(dev, dev->d_region, 948 PAGE_SHIFT, /* use system page size */ 949 0, /* dma type; not used */ 950 NULL, 951 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE)); 952 dev->d_region->ioid = PS3_AUDIO_IOID; 953 954 ret = ps3_dma_region_create(dev->d_region); 955 if (ret) { 956 pr_info("%s: region_create\n", __func__); 957 goto clean_mmio; 958 } 959 960 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr); 961 962 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */ 963 the_card.start_delay = snd_ps3_start_delay; 964 965 /* irq */ 966 if (snd_ps3_allocate_irq()) { 967 ret = -ENXIO; 968 goto clean_dma_region; 969 } 970 971 /* create card instance */ 972 the_card.card = snd_card_new(index, id, THIS_MODULE, 0); 973 if (!the_card.card) { 974 ret = -ENXIO; 975 goto clean_irq; 976 } 977 978 strcpy(the_card.card->driver, "PS3"); 979 strcpy(the_card.card->shortname, "PS3"); 980 strcpy(the_card.card->longname, "PS3 sound"); 981 982 /* create control elements */ 983 for (i = 0; i < ARRAY_SIZE(spdif_ctls); i++) { 984 ret = snd_ctl_add(the_card.card, 985 snd_ctl_new1(&spdif_ctls[i], &the_card)); 986 if (ret < 0) 987 goto clean_card; 988 } 989 990 /* create PCM devices instance */ 991 /* NOTE:this driver works assuming pcm:substream = 1:1 */ 992 ret = snd_pcm_new(the_card.card, 993 "SPDIF", 994 0, /* instance index, will be stored pcm.device*/ 995 1, /* output substream */ 996 0, /* input substream */ 997 &(the_card.pcm)); 998 if (ret) 999 goto clean_card; 1000 1001 the_card.pcm->private_data = &the_card; 1002 strcpy(the_card.pcm->name, "SPDIF"); 1003 1004 /* set pcm ops */ 1005 snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK, 1006 &snd_ps3_pcm_spdif_ops); 1007 1008 the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED; 1009 /* pre-alloc PCM DMA buffer*/ 1010 ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm, 1011 SNDRV_DMA_TYPE_DEV, 1012 &dev->core, 1013 SND_PS3_PCM_PREALLOC_SIZE, 1014 SND_PS3_PCM_PREALLOC_SIZE); 1015 if (ret < 0) { 1016 pr_info("%s: prealloc failed\n", __func__); 1017 goto clean_card; 1018 } 1019 1020 /* 1021 * allocate null buffer 1022 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2 1023 * PAGE_SIZE is enogh 1024 */ 1025 if (!(the_card.null_buffer_start_vaddr = 1026 dma_alloc_coherent(&the_card.ps3_dev->core, 1027 PAGE_SIZE, 1028 &the_card.null_buffer_start_dma_addr, 1029 GFP_KERNEL))) { 1030 pr_info("%s: nullbuffer alloc failed\n", __func__); 1031 goto clean_preallocate; 1032 } 1033 pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__, 1034 the_card.null_buffer_start_vaddr, 1035 the_card.null_buffer_start_dma_addr); 1036 /* set default sample rate/word width */ 1037 snd_ps3_init_avsetting(&the_card); 1038 1039 /* register the card */ 1040 snd_card_set_dev(the_card.card, &dev->core); 1041 ret = snd_card_register(the_card.card); 1042 if (ret < 0) 1043 goto clean_dma_map; 1044 1045 pr_info("%s started. start_delay=%dms\n", 1046 the_card.card->longname, the_card.start_delay); 1047 return 0; 1048 1049 clean_dma_map: 1050 dma_free_coherent(&the_card.ps3_dev->core, 1051 PAGE_SIZE, 1052 the_card.null_buffer_start_vaddr, 1053 the_card.null_buffer_start_dma_addr); 1054 clean_preallocate: 1055 snd_pcm_lib_preallocate_free_for_all(the_card.pcm); 1056 clean_card: 1057 snd_card_free(the_card.card); 1058 clean_irq: 1059 snd_ps3_free_irq(); 1060 clean_dma_region: 1061 ps3_dma_region_free(dev->d_region); 1062 clean_mmio: 1063 snd_ps3_unmap_mmio(); 1064 clean_dev_map: 1065 lv1_gpu_device_unmap(2); 1066 clean_open: 1067 ps3_close_hv_device(dev); 1068 /* 1069 * there is no destructor function to pcm. 1070 * midlayer automatically releases if the card removed 1071 */ 1072 return ret; 1073 }; /* snd_ps3_probe */ 1074 1075 /* called when module removal */ 1076 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev) 1077 { 1078 int ret; 1079 pr_info("%s:start id=%d\n", __func__, dev->match_id); 1080 if (dev->match_id != PS3_MATCH_ID_SOUND) 1081 return -ENXIO; 1082 1083 /* 1084 * ctl and preallocate buffer will be freed in 1085 * snd_card_free 1086 */ 1087 ret = snd_card_free(the_card.card); 1088 if (ret) 1089 pr_info("%s: ctl freecard=%d\n", __func__, ret); 1090 1091 dma_free_coherent(&dev->core, 1092 PAGE_SIZE, 1093 the_card.null_buffer_start_vaddr, 1094 the_card.null_buffer_start_dma_addr); 1095 1096 ps3_dma_region_free(dev->d_region); 1097 1098 snd_ps3_free_irq(); 1099 snd_ps3_unmap_mmio(); 1100 1101 lv1_gpu_device_unmap(2); 1102 ps3_close_hv_device(dev); 1103 pr_info("%s:end id=%d\n", __func__, dev->match_id); 1104 return 0; 1105 } /* snd_ps3_remove */ 1106 1107 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = { 1108 .match_id = PS3_MATCH_ID_SOUND, 1109 .probe = snd_ps3_driver_probe, 1110 .remove = snd_ps3_driver_remove, 1111 .shutdown = snd_ps3_driver_remove, 1112 .core = { 1113 .name = SND_PS3_DRIVER_NAME, 1114 .owner = THIS_MODULE, 1115 }, 1116 }; 1117 1118 1119 /* 1120 * Interrupt handler 1121 */ 1122 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id) 1123 { 1124 1125 uint32_t port_intr; 1126 int underflow_occured = 0; 1127 struct snd_ps3_card_info *card = dev_id; 1128 1129 if (!card->running) { 1130 update_reg(PS3_AUDIO_AX_IS, 0); 1131 update_reg(PS3_AUDIO_INTR_0, 0); 1132 return IRQ_HANDLED; 1133 } 1134 1135 port_intr = read_reg(PS3_AUDIO_AX_IS); 1136 /* 1137 *serial buffer empty detected (every 4 times), 1138 *program next dma and kick it 1139 */ 1140 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) { 1141 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0)); 1142 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 1143 write_reg(PS3_AUDIO_AX_IS, port_intr); 1144 underflow_occured = 1; 1145 } 1146 if (card->silent) { 1147 /* we are still in silent time */ 1148 snd_ps3_program_dma(card, 1149 (underflow_occured) ? 1150 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL : 1151 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 1152 snd_ps3_kick_dma(card); 1153 card->silent --; 1154 } else { 1155 snd_ps3_program_dma(card, 1156 (underflow_occured) ? 1157 SND_PS3_DMA_FILLTYPE_FIRSTFILL : 1158 SND_PS3_DMA_FILLTYPE_RUNNING); 1159 snd_ps3_kick_dma(card); 1160 snd_pcm_period_elapsed(card->substream); 1161 } 1162 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 1163 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0)); 1164 /* 1165 * serial out underflow, but buffer empty not detected. 1166 * in this case, fill fifo with 0 to recover. After 1167 * filling dummy data, serial automatically start to 1168 * consume them and then will generate normal buffer 1169 * empty interrupts. 1170 * If both buffer underflow and buffer empty are occured, 1171 * it is better to do nomal data transfer than empty one 1172 */ 1173 snd_ps3_program_dma(card, 1174 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 1175 snd_ps3_kick_dma(card); 1176 snd_ps3_program_dma(card, 1177 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 1178 snd_ps3_kick_dma(card); 1179 } 1180 /* clear interrupt cause */ 1181 return IRQ_HANDLED; 1182 }; 1183 1184 /* 1185 * module/subsystem initialize/terminate 1186 */ 1187 static int __init snd_ps3_init(void) 1188 { 1189 int ret; 1190 1191 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 1192 return -ENXIO; 1193 1194 memset(&the_card, 0, sizeof(the_card)); 1195 spin_lock_init(&the_card.dma_lock); 1196 1197 /* register systembus DRIVER, this calls our probe() func */ 1198 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info); 1199 1200 return ret; 1201 } 1202 1203 static void __exit snd_ps3_exit(void) 1204 { 1205 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info); 1206 } 1207 1208 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND); 1209