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/dma-mapping.h> 22 #include <linux/dmapool.h> 23 #include <linux/gfp.h> 24 #include <linux/init.h> 25 #include <linux/interrupt.h> 26 #include <linux/io.h> 27 #include <linux/module.h> 28 29 #include <sound/asound.h> 30 #include <sound/control.h> 31 #include <sound/core.h> 32 #include <sound/initval.h> 33 #include <sound/memalloc.h> 34 #include <sound/pcm.h> 35 #include <sound/pcm_params.h> 36 37 #include <asm/dma.h> 38 #include <asm/firmware.h> 39 #include <asm/lv1call.h> 40 #include <asm/ps3.h> 41 #include <asm/ps3av.h> 42 43 #include "snd_ps3.h" 44 #include "snd_ps3_reg.h" 45 46 47 /* 48 * global 49 */ 50 static struct snd_ps3_card_info the_card; 51 52 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY; 53 54 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644); 55 MODULE_PARM_DESC(start_delay, "time to insert silent data in ms"); 56 57 static int index = SNDRV_DEFAULT_IDX1; 58 static char *id = SNDRV_DEFAULT_STR1; 59 60 module_param(index, int, 0444); 61 MODULE_PARM_DESC(index, "Index value for PS3 soundchip."); 62 module_param(id, charp, 0444); 63 MODULE_PARM_DESC(id, "ID string for PS3 soundchip."); 64 65 66 /* 67 * PS3 audio register access 68 */ 69 static inline u32 read_reg(unsigned int reg) 70 { 71 return in_be32(the_card.mapped_mmio_vaddr + reg); 72 } 73 static inline void write_reg(unsigned int reg, u32 val) 74 { 75 out_be32(the_card.mapped_mmio_vaddr + reg, val); 76 } 77 static inline void update_reg(unsigned int reg, u32 or_val) 78 { 79 u32 newval = read_reg(reg) | or_val; 80 write_reg(reg, newval); 81 } 82 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val) 83 { 84 u32 newval = (read_reg(reg) & mask) | or_val; 85 write_reg(reg, newval); 86 } 87 88 /* 89 * ALSA defs 90 */ 91 static const struct snd_pcm_hardware snd_ps3_pcm_hw = { 92 .info = (SNDRV_PCM_INFO_MMAP | 93 SNDRV_PCM_INFO_NONINTERLEAVED | 94 SNDRV_PCM_INFO_MMAP_VALID), 95 .formats = (SNDRV_PCM_FMTBIT_S16_BE | 96 SNDRV_PCM_FMTBIT_S24_BE), 97 .rates = (SNDRV_PCM_RATE_44100 | 98 SNDRV_PCM_RATE_48000 | 99 SNDRV_PCM_RATE_88200 | 100 SNDRV_PCM_RATE_96000), 101 .rate_min = 44100, 102 .rate_max = 96000, 103 104 .channels_min = 2, /* stereo only */ 105 .channels_max = 2, 106 107 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64, 108 109 /* interrupt by four stages */ 110 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 111 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 112 113 .periods_min = 16, 114 .periods_max = 32, /* buffer_size_max/ period_bytes_max */ 115 116 .fifo_size = PS3_AUDIO_FIFO_SIZE 117 }; 118 119 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card, 120 int count, int force_stop) 121 { 122 int dma_ch, done, retries, stop_forced = 0; 123 uint32_t status; 124 125 for (dma_ch = 0; dma_ch < 8; dma_ch++) { 126 retries = count; 127 do { 128 status = read_reg(PS3_AUDIO_KICK(dma_ch)) & 129 PS3_AUDIO_KICK_STATUS_MASK; 130 switch (status) { 131 case PS3_AUDIO_KICK_STATUS_DONE: 132 case PS3_AUDIO_KICK_STATUS_NOTIFY: 133 case PS3_AUDIO_KICK_STATUS_CLEAR: 134 case PS3_AUDIO_KICK_STATUS_ERROR: 135 done = 1; 136 break; 137 default: 138 done = 0; 139 udelay(10); 140 } 141 } while (!done && --retries); 142 if (!retries && force_stop) { 143 pr_info("%s: DMA ch %d is not stopped.", 144 __func__, dma_ch); 145 /* last resort. force to stop dma. 146 * NOTE: this cause DMA done interrupts 147 */ 148 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR); 149 stop_forced = 1; 150 } 151 } 152 return stop_forced; 153 } 154 155 /* 156 * wait for all dma is done. 157 * NOTE: caller should reset card->running before call. 158 * If not, the interrupt handler will re-start DMA, 159 * then DMA is never stopped. 160 */ 161 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card) 162 { 163 int stop_forced; 164 /* 165 * wait for the last dma is done 166 */ 167 168 /* 169 * expected maximum DMA done time is 5.7ms + something (DMA itself). 170 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next 171 * DMA kick event would occur. 172 */ 173 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1); 174 175 /* 176 * clear outstanding interrupts. 177 */ 178 update_reg(PS3_AUDIO_INTR_0, 0); 179 update_reg(PS3_AUDIO_AX_IS, 0); 180 181 /* 182 *revert CLEAR bit since it will not reset automatically after DMA stop 183 */ 184 if (stop_forced) 185 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0); 186 /* ensure the hardware sees changes */ 187 wmb(); 188 } 189 190 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card) 191 { 192 193 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST); 194 /* ensure the hardware sees the change */ 195 wmb(); 196 } 197 198 /* 199 * convert virtual addr to ioif bus addr. 200 */ 201 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card, void *paddr, int ch) 202 { 203 return card->dma_start_bus_addr[ch] + 204 (paddr - card->dma_start_vaddr[ch]); 205 }; 206 207 208 /* 209 * increment ring buffer pointer. 210 * NOTE: caller must hold write spinlock 211 */ 212 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card, 213 enum snd_ps3_ch ch, size_t byte_count, 214 int stage) 215 { 216 if (!stage) 217 card->dma_last_transfer_vaddr[ch] = 218 card->dma_next_transfer_vaddr[ch]; 219 card->dma_next_transfer_vaddr[ch] += byte_count; 220 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <= 221 card->dma_next_transfer_vaddr[ch]) { 222 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch]; 223 } 224 } 225 /* 226 * setup dmac to send data to audio and attenuate samples on the ring buffer 227 */ 228 static int snd_ps3_program_dma(struct snd_ps3_card_info *card, 229 enum snd_ps3_dma_filltype filltype) 230 { 231 /* this dmac does not support over 4G */ 232 uint32_t dma_addr; 233 int fill_stages, dma_ch, stage; 234 enum snd_ps3_ch ch; 235 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */ 236 void *start_vaddr; 237 unsigned long irqsave; 238 int silent = 0; 239 240 switch (filltype) { 241 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL: 242 silent = 1; 243 /* intentionally fall thru */ 244 case SND_PS3_DMA_FILLTYPE_FIRSTFILL: 245 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS; 246 break; 247 248 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING: 249 silent = 1; 250 /* intentionally fall thru */ 251 case SND_PS3_DMA_FILLTYPE_RUNNING: 252 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY; 253 break; 254 } 255 256 snd_ps3_verify_dma_stop(card, 700, 0); 257 fill_stages = 4; 258 spin_lock_irqsave(&card->dma_lock, irqsave); 259 for (ch = 0; ch < 2; ch++) { 260 start_vaddr = card->dma_next_transfer_vaddr[0]; 261 for (stage = 0; stage < fill_stages; stage++) { 262 dma_ch = stage * 2 + ch; 263 if (silent) 264 dma_addr = card->null_buffer_start_dma_addr; 265 else 266 dma_addr = 267 v_to_bus(card, 268 card->dma_next_transfer_vaddr[ch], 269 ch); 270 271 write_reg(PS3_AUDIO_SOURCE(dma_ch), 272 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY | 273 dma_addr)); 274 275 /* dst: fixed to 3wire#0 */ 276 if (ch == 0) 277 write_reg(PS3_AUDIO_DEST(dma_ch), 278 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 279 PS3_AUDIO_AO_3W_LDATA(0))); 280 else 281 write_reg(PS3_AUDIO_DEST(dma_ch), 282 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 283 PS3_AUDIO_AO_3W_RDATA(0))); 284 285 /* count always 1 DMA block (1/2 stage = 128 bytes) */ 286 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0); 287 /* bump pointer if needed */ 288 if (!silent) 289 snd_ps3_bump_buffer(card, ch, 290 PS3_AUDIO_DMAC_BLOCK_SIZE, 291 stage); 292 293 /* kick event */ 294 if (dma_ch == 0) 295 write_reg(PS3_AUDIO_KICK(dma_ch), 296 ch0_kick_event); 297 else 298 write_reg(PS3_AUDIO_KICK(dma_ch), 299 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch 300 - 1) | 301 PS3_AUDIO_KICK_REQUEST); 302 } 303 } 304 /* ensure the hardware sees the change */ 305 wmb(); 306 spin_unlock_irqrestore(&card->dma_lock, irqsave); 307 308 return 0; 309 } 310 311 /* 312 * Interrupt handler 313 */ 314 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id) 315 { 316 317 uint32_t port_intr; 318 int underflow_occured = 0; 319 struct snd_ps3_card_info *card = dev_id; 320 321 if (!card->running) { 322 update_reg(PS3_AUDIO_AX_IS, 0); 323 update_reg(PS3_AUDIO_INTR_0, 0); 324 return IRQ_HANDLED; 325 } 326 327 port_intr = read_reg(PS3_AUDIO_AX_IS); 328 /* 329 *serial buffer empty detected (every 4 times), 330 *program next dma and kick it 331 */ 332 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) { 333 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0)); 334 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 335 write_reg(PS3_AUDIO_AX_IS, port_intr); 336 underflow_occured = 1; 337 } 338 if (card->silent) { 339 /* we are still in silent time */ 340 snd_ps3_program_dma(card, 341 (underflow_occured) ? 342 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL : 343 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 344 snd_ps3_kick_dma(card); 345 card->silent--; 346 } else { 347 snd_ps3_program_dma(card, 348 (underflow_occured) ? 349 SND_PS3_DMA_FILLTYPE_FIRSTFILL : 350 SND_PS3_DMA_FILLTYPE_RUNNING); 351 snd_ps3_kick_dma(card); 352 snd_pcm_period_elapsed(card->substream); 353 } 354 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 355 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0)); 356 /* 357 * serial out underflow, but buffer empty not detected. 358 * in this case, fill fifo with 0 to recover. After 359 * filling dummy data, serial automatically start to 360 * consume them and then will generate normal buffer 361 * empty interrupts. 362 * If both buffer underflow and buffer empty are occurred, 363 * it is better to do nomal data transfer than empty one 364 */ 365 snd_ps3_program_dma(card, 366 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 367 snd_ps3_kick_dma(card); 368 snd_ps3_program_dma(card, 369 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 370 snd_ps3_kick_dma(card); 371 } 372 /* clear interrupt cause */ 373 return IRQ_HANDLED; 374 }; 375 376 /* 377 * audio mute on/off 378 * mute_on : 0 output enabled 379 * 1 mute 380 */ 381 static int snd_ps3_mute(int mute_on) 382 { 383 return ps3av_audio_mute(mute_on); 384 } 385 386 /* 387 * av setting 388 * NOTE: calling this function may generate audio interrupt. 389 */ 390 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card) 391 { 392 int ret, retries, i; 393 pr_debug("%s: start\n", __func__); 394 395 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch, 396 card->avs.avs_audio_rate, 397 card->avs.avs_audio_width, 398 card->avs.avs_audio_format, 399 card->avs.avs_audio_source); 400 /* 401 * Reset the following unwanted settings: 402 */ 403 404 /* disable all 3wire buffers */ 405 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 406 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) | 407 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) | 408 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) | 409 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)), 410 0); 411 wmb(); /* ensure the hardware sees the change */ 412 /* wait for actually stopped */ 413 retries = 1000; 414 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) & 415 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) | 416 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) | 417 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) | 418 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) && 419 --retries) { 420 udelay(1); 421 } 422 423 /* reset buffer pointer */ 424 for (i = 0; i < 4; i++) { 425 update_reg(PS3_AUDIO_AO_3WCTRL(i), 426 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET); 427 udelay(10); 428 } 429 wmb(); /* ensure the hardware actually start resetting */ 430 431 /* enable 3wire#0 buffer */ 432 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0)); 433 434 435 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */ 436 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0), 437 ~PS3_AUDIO_AO_3WCTRL_ASODF, 438 PS3_AUDIO_AO_3WCTRL_ASODF_LSB); 439 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0), 440 ~PS3_AUDIO_AO_SPDCTRL_SPODF, 441 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB); 442 /* ensure all the setting above is written back to register */ 443 wmb(); 444 /* avsetting driver altered AX_IE, caller must reset it if you want */ 445 pr_debug("%s: end\n", __func__); 446 return ret; 447 } 448 449 /* 450 * set sampling rate according to the substream 451 */ 452 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream) 453 { 454 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 455 struct snd_ps3_avsetting_info avs; 456 int ret; 457 458 avs = card->avs; 459 460 pr_debug("%s: called freq=%d width=%d\n", __func__, 461 substream->runtime->rate, 462 snd_pcm_format_width(substream->runtime->format)); 463 464 pr_debug("%s: before freq=%d width=%d\n", __func__, 465 card->avs.avs_audio_rate, card->avs.avs_audio_width); 466 467 /* sample rate */ 468 switch (substream->runtime->rate) { 469 case 44100: 470 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K; 471 break; 472 case 48000: 473 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 474 break; 475 case 88200: 476 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K; 477 break; 478 case 96000: 479 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K; 480 break; 481 default: 482 pr_info("%s: invalid rate %d\n", __func__, 483 substream->runtime->rate); 484 return 1; 485 } 486 487 /* width */ 488 switch (snd_pcm_format_width(substream->runtime->format)) { 489 case 16: 490 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 491 break; 492 case 24: 493 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24; 494 break; 495 default: 496 pr_info("%s: invalid width %d\n", __func__, 497 snd_pcm_format_width(substream->runtime->format)); 498 return 1; 499 } 500 501 memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8); 502 503 if (memcmp(&card->avs, &avs, sizeof(avs))) { 504 pr_debug("%s: after freq=%d width=%d\n", __func__, 505 card->avs.avs_audio_rate, card->avs.avs_audio_width); 506 507 card->avs = avs; 508 snd_ps3_change_avsetting(card); 509 ret = 0; 510 } else 511 ret = 1; 512 513 /* check CS non-audio bit and mute accordingly */ 514 if (avs.avs_cs_info[0] & 0x02) 515 ps3av_audio_mute_analog(1); /* mute if non-audio */ 516 else 517 ps3av_audio_mute_analog(0); 518 519 return ret; 520 } 521 522 /* 523 * PCM operators 524 */ 525 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream) 526 { 527 struct snd_pcm_runtime *runtime = substream->runtime; 528 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 529 int pcm_index; 530 531 pcm_index = substream->pcm->device; 532 /* to retrieve substream/runtime in interrupt handler */ 533 card->substream = substream; 534 535 runtime->hw = snd_ps3_pcm_hw; 536 537 card->start_delay = snd_ps3_start_delay; 538 539 /* mute off */ 540 snd_ps3_mute(0); /* this function sleep */ 541 542 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 543 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2); 544 return 0; 545 }; 546 547 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream) 548 { 549 /* mute on */ 550 snd_ps3_mute(1); 551 return 0; 552 }; 553 554 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 555 struct snd_pcm_hw_params *hw_params) 556 { 557 size_t size; 558 559 /* alloc transport buffer */ 560 size = params_buffer_bytes(hw_params); 561 snd_pcm_lib_malloc_pages(substream, size); 562 return 0; 563 }; 564 565 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream) 566 { 567 int ret; 568 ret = snd_pcm_lib_free_pages(substream); 569 return ret; 570 }; 571 572 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream, 573 unsigned int delay_ms) 574 { 575 int ret; 576 int rate ; 577 578 rate = substream->runtime->rate; 579 ret = snd_pcm_format_size(substream->runtime->format, 580 rate * delay_ms / 1000) 581 * substream->runtime->channels; 582 583 pr_debug("%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n", 584 __func__, 585 delay_ms, 586 rate, 587 snd_pcm_format_size(substream->runtime->format, rate), 588 rate * delay_ms / 1000, 589 ret); 590 591 return ret; 592 }; 593 594 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream) 595 { 596 struct snd_pcm_runtime *runtime = substream->runtime; 597 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 598 unsigned long irqsave; 599 600 if (!snd_ps3_set_avsetting(substream)) { 601 /* some parameter changed */ 602 write_reg(PS3_AUDIO_AX_IE, 603 PS3_AUDIO_AX_IE_ASOBEIE(0) | 604 PS3_AUDIO_AX_IE_ASOBUIE(0)); 605 /* 606 * let SPDIF device re-lock with SPDIF signal, 607 * start with some silence 608 */ 609 card->silent = snd_ps3_delay_to_bytes(substream, 610 card->start_delay) / 611 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */ 612 } 613 614 /* restart ring buffer pointer */ 615 spin_lock_irqsave(&card->dma_lock, irqsave); 616 { 617 card->dma_buffer_size = runtime->dma_bytes; 618 619 card->dma_last_transfer_vaddr[SND_PS3_CH_L] = 620 card->dma_next_transfer_vaddr[SND_PS3_CH_L] = 621 card->dma_start_vaddr[SND_PS3_CH_L] = 622 runtime->dma_area; 623 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr; 624 625 card->dma_last_transfer_vaddr[SND_PS3_CH_R] = 626 card->dma_next_transfer_vaddr[SND_PS3_CH_R] = 627 card->dma_start_vaddr[SND_PS3_CH_R] = 628 runtime->dma_area + (runtime->dma_bytes / 2); 629 card->dma_start_bus_addr[SND_PS3_CH_R] = 630 runtime->dma_addr + (runtime->dma_bytes / 2); 631 632 pr_debug("%s: vaddr=%p bus=%#llx\n", __func__, 633 card->dma_start_vaddr[SND_PS3_CH_L], 634 card->dma_start_bus_addr[SND_PS3_CH_L]); 635 636 } 637 spin_unlock_irqrestore(&card->dma_lock, irqsave); 638 639 /* ensure the hardware sees the change */ 640 mb(); 641 642 return 0; 643 }; 644 645 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 646 int cmd) 647 { 648 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 649 int ret = 0; 650 651 switch (cmd) { 652 case SNDRV_PCM_TRIGGER_START: 653 /* clear outstanding interrupts */ 654 update_reg(PS3_AUDIO_AX_IS, 0); 655 656 spin_lock(&card->dma_lock); 657 { 658 card->running = 1; 659 } 660 spin_unlock(&card->dma_lock); 661 662 snd_ps3_program_dma(card, 663 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 664 snd_ps3_kick_dma(card); 665 while (read_reg(PS3_AUDIO_KICK(7)) & 666 PS3_AUDIO_KICK_STATUS_MASK) { 667 udelay(1); 668 } 669 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 670 snd_ps3_kick_dma(card); 671 break; 672 673 case SNDRV_PCM_TRIGGER_STOP: 674 spin_lock(&card->dma_lock); 675 { 676 card->running = 0; 677 } 678 spin_unlock(&card->dma_lock); 679 snd_ps3_wait_for_dma_stop(card); 680 break; 681 default: 682 break; 683 684 } 685 686 return ret; 687 }; 688 689 /* 690 * report current pointer 691 */ 692 static snd_pcm_uframes_t snd_ps3_pcm_pointer( 693 struct snd_pcm_substream *substream) 694 { 695 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 696 size_t bytes; 697 snd_pcm_uframes_t ret; 698 699 spin_lock(&card->dma_lock); 700 { 701 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] - 702 card->dma_start_vaddr[SND_PS3_CH_L]); 703 } 704 spin_unlock(&card->dma_lock); 705 706 ret = bytes_to_frames(substream->runtime, bytes * 2); 707 708 return ret; 709 }; 710 711 /* 712 * SPDIF status bits controls 713 */ 714 static int snd_ps3_spdif_mask_info(struct snd_kcontrol *kcontrol, 715 struct snd_ctl_elem_info *uinfo) 716 { 717 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 718 uinfo->count = 1; 719 return 0; 720 } 721 722 /* FIXME: ps3av_set_audio_mode() assumes only consumer mode */ 723 static int snd_ps3_spdif_cmask_get(struct snd_kcontrol *kcontrol, 724 struct snd_ctl_elem_value *ucontrol) 725 { 726 memset(ucontrol->value.iec958.status, 0xff, 8); 727 return 0; 728 } 729 730 static int snd_ps3_spdif_pmask_get(struct snd_kcontrol *kcontrol, 731 struct snd_ctl_elem_value *ucontrol) 732 { 733 return 0; 734 } 735 736 static int snd_ps3_spdif_default_get(struct snd_kcontrol *kcontrol, 737 struct snd_ctl_elem_value *ucontrol) 738 { 739 memcpy(ucontrol->value.iec958.status, ps3av_mode_cs_info, 8); 740 return 0; 741 } 742 743 static int snd_ps3_spdif_default_put(struct snd_kcontrol *kcontrol, 744 struct snd_ctl_elem_value *ucontrol) 745 { 746 if (memcmp(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8)) { 747 memcpy(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8); 748 return 1; 749 } 750 return 0; 751 } 752 753 static struct snd_kcontrol_new spdif_ctls[] = { 754 { 755 .access = SNDRV_CTL_ELEM_ACCESS_READ, 756 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 757 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK), 758 .info = snd_ps3_spdif_mask_info, 759 .get = snd_ps3_spdif_cmask_get, 760 }, 761 { 762 .access = SNDRV_CTL_ELEM_ACCESS_READ, 763 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 764 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK), 765 .info = snd_ps3_spdif_mask_info, 766 .get = snd_ps3_spdif_pmask_get, 767 }, 768 { 769 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 770 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), 771 .info = snd_ps3_spdif_mask_info, 772 .get = snd_ps3_spdif_default_get, 773 .put = snd_ps3_spdif_default_put, 774 }, 775 }; 776 777 static struct snd_pcm_ops snd_ps3_pcm_spdif_ops = { 778 .open = snd_ps3_pcm_open, 779 .close = snd_ps3_pcm_close, 780 .ioctl = snd_pcm_lib_ioctl, 781 .hw_params = snd_ps3_pcm_hw_params, 782 .hw_free = snd_ps3_pcm_hw_free, 783 .prepare = snd_ps3_pcm_prepare, 784 .trigger = snd_ps3_pcm_trigger, 785 .pointer = snd_ps3_pcm_pointer, 786 }; 787 788 789 static int snd_ps3_map_mmio(void) 790 { 791 the_card.mapped_mmio_vaddr = 792 ioremap(the_card.ps3_dev->m_region->bus_addr, 793 the_card.ps3_dev->m_region->len); 794 795 if (!the_card.mapped_mmio_vaddr) { 796 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n", 797 __func__, the_card.ps3_dev->m_region->lpar_addr, 798 the_card.ps3_dev->m_region->len); 799 return -ENXIO; 800 } 801 802 return 0; 803 }; 804 805 static void snd_ps3_unmap_mmio(void) 806 { 807 iounmap(the_card.mapped_mmio_vaddr); 808 the_card.mapped_mmio_vaddr = NULL; 809 } 810 811 static int snd_ps3_allocate_irq(void) 812 { 813 int ret; 814 u64 lpar_addr, lpar_size; 815 u64 __iomem *mapped; 816 817 /* FIXME: move this to device_init (H/W probe) */ 818 819 /* get irq outlet */ 820 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size); 821 if (ret) { 822 pr_info("%s: device map 1 failed %d\n", __func__, 823 ret); 824 return -ENXIO; 825 } 826 827 mapped = ioremap(lpar_addr, lpar_size); 828 if (!mapped) { 829 pr_info("%s: ioremap 1 failed \n", __func__); 830 return -ENXIO; 831 } 832 833 the_card.audio_irq_outlet = in_be64(mapped); 834 835 iounmap(mapped); 836 ret = lv1_gpu_device_unmap(1); 837 if (ret) 838 pr_info("%s: unmap 1 failed\n", __func__); 839 840 /* irq */ 841 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, 842 the_card.audio_irq_outlet, 843 &the_card.irq_no); 844 if (ret) { 845 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret); 846 return ret; 847 } 848 849 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, 0, 850 SND_PS3_DRIVER_NAME, &the_card); 851 if (ret) { 852 pr_info("%s: request_irq failed (%d)\n", __func__, ret); 853 goto cleanup_irq; 854 } 855 856 return 0; 857 858 cleanup_irq: 859 ps3_irq_plug_destroy(the_card.irq_no); 860 return ret; 861 }; 862 863 static void snd_ps3_free_irq(void) 864 { 865 free_irq(the_card.irq_no, &the_card); 866 ps3_irq_plug_destroy(the_card.irq_no); 867 } 868 869 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start) 870 { 871 uint64_t val; 872 int ret; 873 874 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) | 875 (0x03UL << 24) | 876 (0x0fUL << 12) | 877 (PS3_AUDIO_IOID); 878 879 ret = lv1_gpu_attribute(0x100, 0x007, val); 880 if (ret) 881 pr_info("%s: gpu_attribute failed %d\n", __func__, 882 ret); 883 } 884 885 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card) 886 { 887 /* 888 * avsetting driver seems to never change the followings 889 * so, init them here once 890 */ 891 892 /* no dma interrupt needed */ 893 write_reg(PS3_AUDIO_INTR_EN_0, 0); 894 895 /* use every 4 buffer empty interrupt */ 896 update_mask_reg(PS3_AUDIO_AX_IC, 897 PS3_AUDIO_AX_IC_AASOIMD_MASK, 898 PS3_AUDIO_AX_IC_AASOIMD_EVERY4); 899 900 /* enable 3wire clocks */ 901 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 902 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED | 903 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED), 904 0); 905 update_reg(PS3_AUDIO_AO_3WMCTRL, 906 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT); 907 } 908 909 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card) 910 { 911 int ret; 912 pr_debug("%s: start\n", __func__); 913 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2; 914 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 915 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 916 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM; 917 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL; 918 memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8); 919 920 ret = snd_ps3_change_avsetting(card); 921 922 snd_ps3_audio_fixup(card); 923 924 /* to start to generate SPDIF signal, fill data */ 925 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 926 snd_ps3_kick_dma(card); 927 pr_debug("%s: end\n", __func__); 928 return ret; 929 } 930 931 static int snd_ps3_driver_probe(struct ps3_system_bus_device *dev) 932 { 933 int i, ret; 934 u64 lpar_addr, lpar_size; 935 936 if (WARN_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1))) 937 return -ENODEV; 938 if (WARN_ON(dev->match_id != PS3_MATCH_ID_SOUND)) 939 return -ENODEV; 940 941 the_card.ps3_dev = dev; 942 943 ret = ps3_open_hv_device(dev); 944 945 if (ret) 946 return -ENXIO; 947 948 /* setup MMIO */ 949 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size); 950 if (ret) { 951 pr_info("%s: device map 2 failed %d\n", __func__, ret); 952 goto clean_open; 953 } 954 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size, 955 PAGE_SHIFT); 956 957 ret = snd_ps3_map_mmio(); 958 if (ret) 959 goto clean_dev_map; 960 961 /* setup DMA area */ 962 ps3_dma_region_init(dev, dev->d_region, 963 PAGE_SHIFT, /* use system page size */ 964 0, /* dma type; not used */ 965 NULL, 966 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE)); 967 dev->d_region->ioid = PS3_AUDIO_IOID; 968 969 ret = ps3_dma_region_create(dev->d_region); 970 if (ret) { 971 pr_info("%s: region_create\n", __func__); 972 goto clean_mmio; 973 } 974 975 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr); 976 977 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */ 978 the_card.start_delay = snd_ps3_start_delay; 979 980 /* irq */ 981 if (snd_ps3_allocate_irq()) { 982 ret = -ENXIO; 983 goto clean_dma_region; 984 } 985 986 /* create card instance */ 987 ret = snd_card_create(index, id, THIS_MODULE, 0, &the_card.card); 988 if (ret < 0) 989 goto clean_irq; 990 991 strcpy(the_card.card->driver, "PS3"); 992 strcpy(the_card.card->shortname, "PS3"); 993 strcpy(the_card.card->longname, "PS3 sound"); 994 995 /* create control elements */ 996 for (i = 0; i < ARRAY_SIZE(spdif_ctls); i++) { 997 ret = snd_ctl_add(the_card.card, 998 snd_ctl_new1(&spdif_ctls[i], &the_card)); 999 if (ret < 0) 1000 goto clean_card; 1001 } 1002 1003 /* create PCM devices instance */ 1004 /* NOTE:this driver works assuming pcm:substream = 1:1 */ 1005 ret = snd_pcm_new(the_card.card, 1006 "SPDIF", 1007 0, /* instance index, will be stored pcm.device*/ 1008 1, /* output substream */ 1009 0, /* input substream */ 1010 &(the_card.pcm)); 1011 if (ret) 1012 goto clean_card; 1013 1014 the_card.pcm->private_data = &the_card; 1015 strcpy(the_card.pcm->name, "SPDIF"); 1016 1017 /* set pcm ops */ 1018 snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK, 1019 &snd_ps3_pcm_spdif_ops); 1020 1021 the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED; 1022 /* pre-alloc PCM DMA buffer*/ 1023 ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm, 1024 SNDRV_DMA_TYPE_DEV, 1025 &dev->core, 1026 SND_PS3_PCM_PREALLOC_SIZE, 1027 SND_PS3_PCM_PREALLOC_SIZE); 1028 if (ret < 0) { 1029 pr_info("%s: prealloc failed\n", __func__); 1030 goto clean_card; 1031 } 1032 1033 /* 1034 * allocate null buffer 1035 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2 1036 * PAGE_SIZE is enogh 1037 */ 1038 the_card.null_buffer_start_vaddr = 1039 dma_alloc_coherent(&the_card.ps3_dev->core, 1040 PAGE_SIZE, 1041 &the_card.null_buffer_start_dma_addr, 1042 GFP_KERNEL); 1043 if (!the_card.null_buffer_start_vaddr) { 1044 pr_info("%s: nullbuffer alloc failed\n", __func__); 1045 ret = -ENOMEM; 1046 goto clean_preallocate; 1047 } 1048 pr_debug("%s: null vaddr=%p dma=%#llx\n", __func__, 1049 the_card.null_buffer_start_vaddr, 1050 the_card.null_buffer_start_dma_addr); 1051 /* set default sample rate/word width */ 1052 snd_ps3_init_avsetting(&the_card); 1053 1054 /* register the card */ 1055 snd_card_set_dev(the_card.card, &dev->core); 1056 ret = snd_card_register(the_card.card); 1057 if (ret < 0) 1058 goto clean_dma_map; 1059 1060 pr_info("%s started. start_delay=%dms\n", 1061 the_card.card->longname, the_card.start_delay); 1062 return 0; 1063 1064 clean_dma_map: 1065 dma_free_coherent(&the_card.ps3_dev->core, 1066 PAGE_SIZE, 1067 the_card.null_buffer_start_vaddr, 1068 the_card.null_buffer_start_dma_addr); 1069 clean_preallocate: 1070 snd_pcm_lib_preallocate_free_for_all(the_card.pcm); 1071 clean_card: 1072 snd_card_free(the_card.card); 1073 clean_irq: 1074 snd_ps3_free_irq(); 1075 clean_dma_region: 1076 ps3_dma_region_free(dev->d_region); 1077 clean_mmio: 1078 snd_ps3_unmap_mmio(); 1079 clean_dev_map: 1080 lv1_gpu_device_unmap(2); 1081 clean_open: 1082 ps3_close_hv_device(dev); 1083 /* 1084 * there is no destructor function to pcm. 1085 * midlayer automatically releases if the card removed 1086 */ 1087 return ret; 1088 }; /* snd_ps3_probe */ 1089 1090 /* called when module removal */ 1091 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev) 1092 { 1093 int ret; 1094 pr_info("%s:start id=%d\n", __func__, dev->match_id); 1095 if (dev->match_id != PS3_MATCH_ID_SOUND) 1096 return -ENXIO; 1097 1098 /* 1099 * ctl and preallocate buffer will be freed in 1100 * snd_card_free 1101 */ 1102 ret = snd_card_free(the_card.card); 1103 if (ret) 1104 pr_info("%s: ctl freecard=%d\n", __func__, ret); 1105 1106 dma_free_coherent(&dev->core, 1107 PAGE_SIZE, 1108 the_card.null_buffer_start_vaddr, 1109 the_card.null_buffer_start_dma_addr); 1110 1111 ps3_dma_region_free(dev->d_region); 1112 1113 snd_ps3_free_irq(); 1114 snd_ps3_unmap_mmio(); 1115 1116 lv1_gpu_device_unmap(2); 1117 ps3_close_hv_device(dev); 1118 pr_info("%s:end id=%d\n", __func__, dev->match_id); 1119 return 0; 1120 } /* snd_ps3_remove */ 1121 1122 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = { 1123 .match_id = PS3_MATCH_ID_SOUND, 1124 .probe = snd_ps3_driver_probe, 1125 .remove = snd_ps3_driver_remove, 1126 .shutdown = snd_ps3_driver_remove, 1127 .core = { 1128 .name = SND_PS3_DRIVER_NAME, 1129 .owner = THIS_MODULE, 1130 }, 1131 }; 1132 1133 1134 /* 1135 * module/subsystem initialize/terminate 1136 */ 1137 static int __init snd_ps3_init(void) 1138 { 1139 int ret; 1140 1141 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 1142 return -ENXIO; 1143 1144 memset(&the_card, 0, sizeof(the_card)); 1145 spin_lock_init(&the_card.dma_lock); 1146 1147 /* register systembus DRIVER, this calls our probe() func */ 1148 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info); 1149 1150 return ret; 1151 } 1152 module_init(snd_ps3_init); 1153 1154 static void __exit snd_ps3_exit(void) 1155 { 1156 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info); 1157 } 1158 module_exit(snd_ps3_exit); 1159 1160 MODULE_LICENSE("GPL v2"); 1161 MODULE_DESCRIPTION("PS3 sound driver"); 1162 MODULE_AUTHOR("Sony Computer Entertainment Inc."); 1163 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND); 1164