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 unsigned long irqsave; 237 int silent = 0; 238 239 switch (filltype) { 240 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL: 241 silent = 1; 242 /* intentionally fall thru */ 243 case SND_PS3_DMA_FILLTYPE_FIRSTFILL: 244 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS; 245 break; 246 247 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING: 248 silent = 1; 249 /* intentionally fall thru */ 250 case SND_PS3_DMA_FILLTYPE_RUNNING: 251 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY; 252 break; 253 } 254 255 snd_ps3_verify_dma_stop(card, 700, 0); 256 fill_stages = 4; 257 spin_lock_irqsave(&card->dma_lock, irqsave); 258 for (ch = 0; ch < 2; ch++) { 259 for (stage = 0; stage < fill_stages; stage++) { 260 dma_ch = stage * 2 + ch; 261 if (silent) 262 dma_addr = card->null_buffer_start_dma_addr; 263 else 264 dma_addr = 265 v_to_bus(card, 266 card->dma_next_transfer_vaddr[ch], 267 ch); 268 269 write_reg(PS3_AUDIO_SOURCE(dma_ch), 270 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY | 271 dma_addr)); 272 273 /* dst: fixed to 3wire#0 */ 274 if (ch == 0) 275 write_reg(PS3_AUDIO_DEST(dma_ch), 276 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 277 PS3_AUDIO_AO_3W_LDATA(0))); 278 else 279 write_reg(PS3_AUDIO_DEST(dma_ch), 280 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 281 PS3_AUDIO_AO_3W_RDATA(0))); 282 283 /* count always 1 DMA block (1/2 stage = 128 bytes) */ 284 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0); 285 /* bump pointer if needed */ 286 if (!silent) 287 snd_ps3_bump_buffer(card, ch, 288 PS3_AUDIO_DMAC_BLOCK_SIZE, 289 stage); 290 291 /* kick event */ 292 if (dma_ch == 0) 293 write_reg(PS3_AUDIO_KICK(dma_ch), 294 ch0_kick_event); 295 else 296 write_reg(PS3_AUDIO_KICK(dma_ch), 297 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch 298 - 1) | 299 PS3_AUDIO_KICK_REQUEST); 300 } 301 } 302 /* ensure the hardware sees the change */ 303 wmb(); 304 spin_unlock_irqrestore(&card->dma_lock, irqsave); 305 306 return 0; 307 } 308 309 /* 310 * Interrupt handler 311 */ 312 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id) 313 { 314 315 uint32_t port_intr; 316 int underflow_occured = 0; 317 struct snd_ps3_card_info *card = dev_id; 318 319 if (!card->running) { 320 update_reg(PS3_AUDIO_AX_IS, 0); 321 update_reg(PS3_AUDIO_INTR_0, 0); 322 return IRQ_HANDLED; 323 } 324 325 port_intr = read_reg(PS3_AUDIO_AX_IS); 326 /* 327 *serial buffer empty detected (every 4 times), 328 *program next dma and kick it 329 */ 330 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) { 331 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0)); 332 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 333 write_reg(PS3_AUDIO_AX_IS, port_intr); 334 underflow_occured = 1; 335 } 336 if (card->silent) { 337 /* we are still in silent time */ 338 snd_ps3_program_dma(card, 339 (underflow_occured) ? 340 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL : 341 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 342 snd_ps3_kick_dma(card); 343 card->silent--; 344 } else { 345 snd_ps3_program_dma(card, 346 (underflow_occured) ? 347 SND_PS3_DMA_FILLTYPE_FIRSTFILL : 348 SND_PS3_DMA_FILLTYPE_RUNNING); 349 snd_ps3_kick_dma(card); 350 snd_pcm_period_elapsed(card->substream); 351 } 352 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 353 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0)); 354 /* 355 * serial out underflow, but buffer empty not detected. 356 * in this case, fill fifo with 0 to recover. After 357 * filling dummy data, serial automatically start to 358 * consume them and then will generate normal buffer 359 * empty interrupts. 360 * If both buffer underflow and buffer empty are occurred, 361 * it is better to do nomal data transfer than empty one 362 */ 363 snd_ps3_program_dma(card, 364 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 365 snd_ps3_kick_dma(card); 366 snd_ps3_program_dma(card, 367 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 368 snd_ps3_kick_dma(card); 369 } 370 /* clear interrupt cause */ 371 return IRQ_HANDLED; 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 * av setting 386 * NOTE: calling this function may generate audio interrupt. 387 */ 388 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card) 389 { 390 int ret, retries, i; 391 pr_debug("%s: start\n", __func__); 392 393 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch, 394 card->avs.avs_audio_rate, 395 card->avs.avs_audio_width, 396 card->avs.avs_audio_format, 397 card->avs.avs_audio_source); 398 /* 399 * Reset the following unwanted settings: 400 */ 401 402 /* disable all 3wire buffers */ 403 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 404 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) | 405 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) | 406 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) | 407 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)), 408 0); 409 wmb(); /* ensure the hardware sees the change */ 410 /* wait for actually stopped */ 411 retries = 1000; 412 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) & 413 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) | 414 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) | 415 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) | 416 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) && 417 --retries) { 418 udelay(1); 419 } 420 421 /* reset buffer pointer */ 422 for (i = 0; i < 4; i++) { 423 update_reg(PS3_AUDIO_AO_3WCTRL(i), 424 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET); 425 udelay(10); 426 } 427 wmb(); /* ensure the hardware actually start resetting */ 428 429 /* enable 3wire#0 buffer */ 430 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0)); 431 432 433 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */ 434 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0), 435 ~PS3_AUDIO_AO_3WCTRL_ASODF, 436 PS3_AUDIO_AO_3WCTRL_ASODF_LSB); 437 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0), 438 ~PS3_AUDIO_AO_SPDCTRL_SPODF, 439 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB); 440 /* ensure all the setting above is written back to register */ 441 wmb(); 442 /* avsetting driver altered AX_IE, caller must reset it if you want */ 443 pr_debug("%s: end\n", __func__); 444 return ret; 445 } 446 447 /* 448 * set sampling rate according to the substream 449 */ 450 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream) 451 { 452 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 453 struct snd_ps3_avsetting_info avs; 454 int ret; 455 456 avs = card->avs; 457 458 pr_debug("%s: called freq=%d width=%d\n", __func__, 459 substream->runtime->rate, 460 snd_pcm_format_width(substream->runtime->format)); 461 462 pr_debug("%s: before freq=%d width=%d\n", __func__, 463 card->avs.avs_audio_rate, card->avs.avs_audio_width); 464 465 /* sample rate */ 466 switch (substream->runtime->rate) { 467 case 44100: 468 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K; 469 break; 470 case 48000: 471 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 472 break; 473 case 88200: 474 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K; 475 break; 476 case 96000: 477 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K; 478 break; 479 default: 480 pr_info("%s: invalid rate %d\n", __func__, 481 substream->runtime->rate); 482 return 1; 483 } 484 485 /* width */ 486 switch (snd_pcm_format_width(substream->runtime->format)) { 487 case 16: 488 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 489 break; 490 case 24: 491 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24; 492 break; 493 default: 494 pr_info("%s: invalid width %d\n", __func__, 495 snd_pcm_format_width(substream->runtime->format)); 496 return 1; 497 } 498 499 memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8); 500 501 if (memcmp(&card->avs, &avs, sizeof(avs))) { 502 pr_debug("%s: after freq=%d width=%d\n", __func__, 503 card->avs.avs_audio_rate, card->avs.avs_audio_width); 504 505 card->avs = avs; 506 snd_ps3_change_avsetting(card); 507 ret = 0; 508 } else 509 ret = 1; 510 511 /* check CS non-audio bit and mute accordingly */ 512 if (avs.avs_cs_info[0] & 0x02) 513 ps3av_audio_mute_analog(1); /* mute if non-audio */ 514 else 515 ps3av_audio_mute_analog(0); 516 517 return ret; 518 } 519 520 /* 521 * PCM operators 522 */ 523 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream) 524 { 525 struct snd_pcm_runtime *runtime = substream->runtime; 526 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 527 528 /* to retrieve substream/runtime in interrupt handler */ 529 card->substream = substream; 530 531 runtime->hw = snd_ps3_pcm_hw; 532 533 card->start_delay = snd_ps3_start_delay; 534 535 /* mute off */ 536 snd_ps3_mute(0); /* this function sleep */ 537 538 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 539 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2); 540 return 0; 541 }; 542 543 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream) 544 { 545 /* mute on */ 546 snd_ps3_mute(1); 547 return 0; 548 }; 549 550 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 551 struct snd_pcm_hw_params *hw_params) 552 { 553 size_t size; 554 555 /* alloc transport buffer */ 556 size = params_buffer_bytes(hw_params); 557 snd_pcm_lib_malloc_pages(substream, size); 558 return 0; 559 }; 560 561 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream) 562 { 563 return snd_pcm_lib_free_pages(substream); 564 }; 565 566 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream, 567 unsigned int delay_ms) 568 { 569 int ret; 570 int rate ; 571 572 rate = substream->runtime->rate; 573 ret = snd_pcm_format_size(substream->runtime->format, 574 rate * delay_ms / 1000) 575 * substream->runtime->channels; 576 577 pr_debug("%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n", 578 __func__, 579 delay_ms, 580 rate, 581 snd_pcm_format_size(substream->runtime->format, rate), 582 rate * delay_ms / 1000, 583 ret); 584 585 return ret; 586 }; 587 588 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream) 589 { 590 struct snd_pcm_runtime *runtime = substream->runtime; 591 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 592 unsigned long irqsave; 593 594 if (!snd_ps3_set_avsetting(substream)) { 595 /* some parameter changed */ 596 write_reg(PS3_AUDIO_AX_IE, 597 PS3_AUDIO_AX_IE_ASOBEIE(0) | 598 PS3_AUDIO_AX_IE_ASOBUIE(0)); 599 /* 600 * let SPDIF device re-lock with SPDIF signal, 601 * start with some silence 602 */ 603 card->silent = snd_ps3_delay_to_bytes(substream, 604 card->start_delay) / 605 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */ 606 } 607 608 /* restart ring buffer pointer */ 609 spin_lock_irqsave(&card->dma_lock, irqsave); 610 { 611 card->dma_buffer_size = runtime->dma_bytes; 612 613 card->dma_last_transfer_vaddr[SND_PS3_CH_L] = 614 card->dma_next_transfer_vaddr[SND_PS3_CH_L] = 615 card->dma_start_vaddr[SND_PS3_CH_L] = 616 runtime->dma_area; 617 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr; 618 619 card->dma_last_transfer_vaddr[SND_PS3_CH_R] = 620 card->dma_next_transfer_vaddr[SND_PS3_CH_R] = 621 card->dma_start_vaddr[SND_PS3_CH_R] = 622 runtime->dma_area + (runtime->dma_bytes / 2); 623 card->dma_start_bus_addr[SND_PS3_CH_R] = 624 runtime->dma_addr + (runtime->dma_bytes / 2); 625 626 pr_debug("%s: vaddr=%p bus=%#llx\n", __func__, 627 card->dma_start_vaddr[SND_PS3_CH_L], 628 card->dma_start_bus_addr[SND_PS3_CH_L]); 629 630 } 631 spin_unlock_irqrestore(&card->dma_lock, irqsave); 632 633 /* ensure the hardware sees the change */ 634 mb(); 635 636 return 0; 637 }; 638 639 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 640 int cmd) 641 { 642 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 643 int ret = 0; 644 645 switch (cmd) { 646 case SNDRV_PCM_TRIGGER_START: 647 /* clear outstanding interrupts */ 648 update_reg(PS3_AUDIO_AX_IS, 0); 649 650 spin_lock(&card->dma_lock); 651 { 652 card->running = 1; 653 } 654 spin_unlock(&card->dma_lock); 655 656 snd_ps3_program_dma(card, 657 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 658 snd_ps3_kick_dma(card); 659 while (read_reg(PS3_AUDIO_KICK(7)) & 660 PS3_AUDIO_KICK_STATUS_MASK) { 661 udelay(1); 662 } 663 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 664 snd_ps3_kick_dma(card); 665 break; 666 667 case SNDRV_PCM_TRIGGER_STOP: 668 spin_lock(&card->dma_lock); 669 { 670 card->running = 0; 671 } 672 spin_unlock(&card->dma_lock); 673 snd_ps3_wait_for_dma_stop(card); 674 break; 675 default: 676 break; 677 678 } 679 680 return ret; 681 }; 682 683 /* 684 * report current pointer 685 */ 686 static snd_pcm_uframes_t snd_ps3_pcm_pointer( 687 struct snd_pcm_substream *substream) 688 { 689 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 690 size_t bytes; 691 snd_pcm_uframes_t ret; 692 693 spin_lock(&card->dma_lock); 694 { 695 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] - 696 card->dma_start_vaddr[SND_PS3_CH_L]); 697 } 698 spin_unlock(&card->dma_lock); 699 700 ret = bytes_to_frames(substream->runtime, bytes * 2); 701 702 return ret; 703 }; 704 705 /* 706 * SPDIF status bits controls 707 */ 708 static int snd_ps3_spdif_mask_info(struct snd_kcontrol *kcontrol, 709 struct snd_ctl_elem_info *uinfo) 710 { 711 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 712 uinfo->count = 1; 713 return 0; 714 } 715 716 /* FIXME: ps3av_set_audio_mode() assumes only consumer mode */ 717 static int snd_ps3_spdif_cmask_get(struct snd_kcontrol *kcontrol, 718 struct snd_ctl_elem_value *ucontrol) 719 { 720 memset(ucontrol->value.iec958.status, 0xff, 8); 721 return 0; 722 } 723 724 static int snd_ps3_spdif_pmask_get(struct snd_kcontrol *kcontrol, 725 struct snd_ctl_elem_value *ucontrol) 726 { 727 return 0; 728 } 729 730 static int snd_ps3_spdif_default_get(struct snd_kcontrol *kcontrol, 731 struct snd_ctl_elem_value *ucontrol) 732 { 733 memcpy(ucontrol->value.iec958.status, ps3av_mode_cs_info, 8); 734 return 0; 735 } 736 737 static int snd_ps3_spdif_default_put(struct snd_kcontrol *kcontrol, 738 struct snd_ctl_elem_value *ucontrol) 739 { 740 if (memcmp(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8)) { 741 memcpy(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8); 742 return 1; 743 } 744 return 0; 745 } 746 747 static struct snd_kcontrol_new spdif_ctls[] = { 748 { 749 .access = SNDRV_CTL_ELEM_ACCESS_READ, 750 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 751 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK), 752 .info = snd_ps3_spdif_mask_info, 753 .get = snd_ps3_spdif_cmask_get, 754 }, 755 { 756 .access = SNDRV_CTL_ELEM_ACCESS_READ, 757 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 758 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK), 759 .info = snd_ps3_spdif_mask_info, 760 .get = snd_ps3_spdif_pmask_get, 761 }, 762 { 763 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 764 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), 765 .info = snd_ps3_spdif_mask_info, 766 .get = snd_ps3_spdif_default_get, 767 .put = snd_ps3_spdif_default_put, 768 }, 769 }; 770 771 static const struct snd_pcm_ops snd_ps3_pcm_spdif_ops = { 772 .open = snd_ps3_pcm_open, 773 .close = snd_ps3_pcm_close, 774 .ioctl = snd_pcm_lib_ioctl, 775 .hw_params = snd_ps3_pcm_hw_params, 776 .hw_free = snd_ps3_pcm_hw_free, 777 .prepare = snd_ps3_pcm_prepare, 778 .trigger = snd_ps3_pcm_trigger, 779 .pointer = snd_ps3_pcm_pointer, 780 }; 781 782 783 static int snd_ps3_map_mmio(void) 784 { 785 the_card.mapped_mmio_vaddr = 786 ioremap(the_card.ps3_dev->m_region->bus_addr, 787 the_card.ps3_dev->m_region->len); 788 789 if (!the_card.mapped_mmio_vaddr) { 790 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n", 791 __func__, the_card.ps3_dev->m_region->lpar_addr, 792 the_card.ps3_dev->m_region->len); 793 return -ENXIO; 794 } 795 796 return 0; 797 }; 798 799 static void snd_ps3_unmap_mmio(void) 800 { 801 iounmap(the_card.mapped_mmio_vaddr); 802 the_card.mapped_mmio_vaddr = NULL; 803 } 804 805 static int snd_ps3_allocate_irq(void) 806 { 807 int ret; 808 u64 lpar_addr, lpar_size; 809 u64 __iomem *mapped; 810 811 /* FIXME: move this to device_init (H/W probe) */ 812 813 /* get irq outlet */ 814 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size); 815 if (ret) { 816 pr_info("%s: device map 1 failed %d\n", __func__, 817 ret); 818 return -ENXIO; 819 } 820 821 mapped = ioremap(lpar_addr, lpar_size); 822 if (!mapped) { 823 pr_info("%s: ioremap 1 failed \n", __func__); 824 return -ENXIO; 825 } 826 827 the_card.audio_irq_outlet = in_be64(mapped); 828 829 iounmap(mapped); 830 ret = lv1_gpu_device_unmap(1); 831 if (ret) 832 pr_info("%s: unmap 1 failed\n", __func__); 833 834 /* irq */ 835 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, 836 the_card.audio_irq_outlet, 837 &the_card.irq_no); 838 if (ret) { 839 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret); 840 return ret; 841 } 842 843 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, 0, 844 SND_PS3_DRIVER_NAME, &the_card); 845 if (ret) { 846 pr_info("%s: request_irq failed (%d)\n", __func__, ret); 847 goto cleanup_irq; 848 } 849 850 return 0; 851 852 cleanup_irq: 853 ps3_irq_plug_destroy(the_card.irq_no); 854 return ret; 855 }; 856 857 static void snd_ps3_free_irq(void) 858 { 859 free_irq(the_card.irq_no, &the_card); 860 ps3_irq_plug_destroy(the_card.irq_no); 861 } 862 863 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start) 864 { 865 uint64_t val; 866 int ret; 867 868 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) | 869 (0x03UL << 24) | 870 (0x0fUL << 12) | 871 (PS3_AUDIO_IOID); 872 873 ret = lv1_gpu_attribute(0x100, 0x007, val); 874 if (ret) 875 pr_info("%s: gpu_attribute failed %d\n", __func__, 876 ret); 877 } 878 879 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card) 880 { 881 /* 882 * avsetting driver seems to never change the following 883 * so, init them here once 884 */ 885 886 /* no dma interrupt needed */ 887 write_reg(PS3_AUDIO_INTR_EN_0, 0); 888 889 /* use every 4 buffer empty interrupt */ 890 update_mask_reg(PS3_AUDIO_AX_IC, 891 PS3_AUDIO_AX_IC_AASOIMD_MASK, 892 PS3_AUDIO_AX_IC_AASOIMD_EVERY4); 893 894 /* enable 3wire clocks */ 895 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 896 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED | 897 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED), 898 0); 899 update_reg(PS3_AUDIO_AO_3WMCTRL, 900 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT); 901 } 902 903 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card) 904 { 905 int ret; 906 pr_debug("%s: start\n", __func__); 907 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2; 908 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 909 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 910 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM; 911 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL; 912 memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8); 913 914 ret = snd_ps3_change_avsetting(card); 915 916 snd_ps3_audio_fixup(card); 917 918 /* to start to generate SPDIF signal, fill data */ 919 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 920 snd_ps3_kick_dma(card); 921 pr_debug("%s: end\n", __func__); 922 return ret; 923 } 924 925 static int snd_ps3_driver_probe(struct ps3_system_bus_device *dev) 926 { 927 int i, ret; 928 u64 lpar_addr, lpar_size; 929 static u64 dummy_mask; 930 931 if (WARN_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1))) 932 return -ENODEV; 933 if (WARN_ON(dev->match_id != PS3_MATCH_ID_SOUND)) 934 return -ENODEV; 935 936 the_card.ps3_dev = dev; 937 938 ret = ps3_open_hv_device(dev); 939 940 if (ret) 941 return -ENXIO; 942 943 /* setup MMIO */ 944 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size); 945 if (ret) { 946 pr_info("%s: device map 2 failed %d\n", __func__, ret); 947 goto clean_open; 948 } 949 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size, 950 PAGE_SHIFT); 951 952 ret = snd_ps3_map_mmio(); 953 if (ret) 954 goto clean_dev_map; 955 956 /* setup DMA area */ 957 ps3_dma_region_init(dev, dev->d_region, 958 PAGE_SHIFT, /* use system page size */ 959 0, /* dma type; not used */ 960 NULL, 961 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE)); 962 dev->d_region->ioid = PS3_AUDIO_IOID; 963 964 ret = ps3_dma_region_create(dev->d_region); 965 if (ret) { 966 pr_info("%s: region_create\n", __func__); 967 goto clean_mmio; 968 } 969 970 dummy_mask = DMA_BIT_MASK(32); 971 dev->core.dma_mask = &dummy_mask; 972 dma_set_coherent_mask(&dev->core, dummy_mask); 973 974 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr); 975 976 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */ 977 the_card.start_delay = snd_ps3_start_delay; 978 979 /* irq */ 980 if (snd_ps3_allocate_irq()) { 981 ret = -ENXIO; 982 goto clean_dma_region; 983 } 984 985 /* create card instance */ 986 ret = snd_card_new(&dev->core, index, id, THIS_MODULE, 987 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 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 1029 /* 1030 * allocate null buffer 1031 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2 1032 * PAGE_SIZE is enogh 1033 */ 1034 the_card.null_buffer_start_vaddr = 1035 dma_alloc_coherent(&the_card.ps3_dev->core, 1036 PAGE_SIZE, 1037 &the_card.null_buffer_start_dma_addr, 1038 GFP_KERNEL); 1039 if (!the_card.null_buffer_start_vaddr) { 1040 pr_info("%s: nullbuffer alloc failed\n", __func__); 1041 ret = -ENOMEM; 1042 goto clean_card; 1043 } 1044 pr_debug("%s: null vaddr=%p dma=%#llx\n", __func__, 1045 the_card.null_buffer_start_vaddr, 1046 the_card.null_buffer_start_dma_addr); 1047 /* set default sample rate/word width */ 1048 snd_ps3_init_avsetting(&the_card); 1049 1050 /* register the card */ 1051 ret = snd_card_register(the_card.card); 1052 if (ret < 0) 1053 goto clean_dma_map; 1054 1055 pr_info("%s started. start_delay=%dms\n", 1056 the_card.card->longname, the_card.start_delay); 1057 return 0; 1058 1059 clean_dma_map: 1060 dma_free_coherent(&the_card.ps3_dev->core, 1061 PAGE_SIZE, 1062 the_card.null_buffer_start_vaddr, 1063 the_card.null_buffer_start_dma_addr); 1064 clean_card: 1065 snd_card_free(the_card.card); 1066 clean_irq: 1067 snd_ps3_free_irq(); 1068 clean_dma_region: 1069 ps3_dma_region_free(dev->d_region); 1070 clean_mmio: 1071 snd_ps3_unmap_mmio(); 1072 clean_dev_map: 1073 lv1_gpu_device_unmap(2); 1074 clean_open: 1075 ps3_close_hv_device(dev); 1076 /* 1077 * there is no destructor function to pcm. 1078 * midlayer automatically releases if the card removed 1079 */ 1080 return ret; 1081 }; /* snd_ps3_probe */ 1082 1083 /* called when module removal */ 1084 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev) 1085 { 1086 int ret; 1087 pr_info("%s:start id=%d\n", __func__, dev->match_id); 1088 if (dev->match_id != PS3_MATCH_ID_SOUND) 1089 return -ENXIO; 1090 1091 /* 1092 * ctl and preallocate buffer will be freed in 1093 * snd_card_free 1094 */ 1095 ret = snd_card_free(the_card.card); 1096 if (ret) 1097 pr_info("%s: ctl freecard=%d\n", __func__, ret); 1098 1099 dma_free_coherent(&dev->core, 1100 PAGE_SIZE, 1101 the_card.null_buffer_start_vaddr, 1102 the_card.null_buffer_start_dma_addr); 1103 1104 ps3_dma_region_free(dev->d_region); 1105 1106 snd_ps3_free_irq(); 1107 snd_ps3_unmap_mmio(); 1108 1109 lv1_gpu_device_unmap(2); 1110 ps3_close_hv_device(dev); 1111 pr_info("%s:end id=%d\n", __func__, dev->match_id); 1112 return 0; 1113 } /* snd_ps3_remove */ 1114 1115 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = { 1116 .match_id = PS3_MATCH_ID_SOUND, 1117 .probe = snd_ps3_driver_probe, 1118 .remove = snd_ps3_driver_remove, 1119 .shutdown = snd_ps3_driver_remove, 1120 .core = { 1121 .name = SND_PS3_DRIVER_NAME, 1122 .owner = THIS_MODULE, 1123 }, 1124 }; 1125 1126 1127 /* 1128 * module/subsystem initialize/terminate 1129 */ 1130 static int __init snd_ps3_init(void) 1131 { 1132 int ret; 1133 1134 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 1135 return -ENXIO; 1136 1137 memset(&the_card, 0, sizeof(the_card)); 1138 spin_lock_init(&the_card.dma_lock); 1139 1140 /* register systembus DRIVER, this calls our probe() func */ 1141 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info); 1142 1143 return ret; 1144 } 1145 module_init(snd_ps3_init); 1146 1147 static void __exit snd_ps3_exit(void) 1148 { 1149 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info); 1150 } 1151 module_exit(snd_ps3_exit); 1152 1153 MODULE_LICENSE("GPL v2"); 1154 MODULE_DESCRIPTION("PS3 sound driver"); 1155 MODULE_AUTHOR("Sony Computer Entertainment Inc."); 1156 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND); 1157