1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Audio support for PS3 4 * Copyright (C) 2007 Sony Computer Entertainment Inc. 5 * All rights reserved. 6 * Copyright 2006, 2007 Sony Corporation 7 */ 8 9 #include <linux/dma-mapping.h> 10 #include <linux/dmapool.h> 11 #include <linux/gfp.h> 12 #include <linux/init.h> 13 #include <linux/interrupt.h> 14 #include <linux/io.h> 15 #include <linux/module.h> 16 17 #include <sound/asound.h> 18 #include <sound/control.h> 19 #include <sound/core.h> 20 #include <sound/initval.h> 21 #include <sound/memalloc.h> 22 #include <sound/pcm.h> 23 #include <sound/pcm_params.h> 24 25 #include <asm/dma.h> 26 #include <asm/firmware.h> 27 #include <asm/lv1call.h> 28 #include <asm/ps3.h> 29 #include <asm/ps3av.h> 30 31 #include "snd_ps3.h" 32 #include "snd_ps3_reg.h" 33 34 35 /* 36 * global 37 */ 38 static struct snd_ps3_card_info the_card; 39 40 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY; 41 42 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644); 43 MODULE_PARM_DESC(start_delay, "time to insert silent data in ms"); 44 45 static int index = SNDRV_DEFAULT_IDX1; 46 static char *id = SNDRV_DEFAULT_STR1; 47 48 module_param(index, int, 0444); 49 MODULE_PARM_DESC(index, "Index value for PS3 soundchip."); 50 module_param(id, charp, 0444); 51 MODULE_PARM_DESC(id, "ID string for PS3 soundchip."); 52 53 54 /* 55 * PS3 audio register access 56 */ 57 static inline u32 read_reg(unsigned int reg) 58 { 59 return in_be32(the_card.mapped_mmio_vaddr + reg); 60 } 61 static inline void write_reg(unsigned int reg, u32 val) 62 { 63 out_be32(the_card.mapped_mmio_vaddr + reg, val); 64 } 65 static inline void update_reg(unsigned int reg, u32 or_val) 66 { 67 u32 newval = read_reg(reg) | or_val; 68 write_reg(reg, newval); 69 } 70 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val) 71 { 72 u32 newval = (read_reg(reg) & mask) | or_val; 73 write_reg(reg, newval); 74 } 75 76 /* 77 * ALSA defs 78 */ 79 static const struct snd_pcm_hardware snd_ps3_pcm_hw = { 80 .info = (SNDRV_PCM_INFO_MMAP | 81 SNDRV_PCM_INFO_NONINTERLEAVED | 82 SNDRV_PCM_INFO_MMAP_VALID), 83 .formats = (SNDRV_PCM_FMTBIT_S16_BE | 84 SNDRV_PCM_FMTBIT_S24_BE), 85 .rates = (SNDRV_PCM_RATE_44100 | 86 SNDRV_PCM_RATE_48000 | 87 SNDRV_PCM_RATE_88200 | 88 SNDRV_PCM_RATE_96000), 89 .rate_min = 44100, 90 .rate_max = 96000, 91 92 .channels_min = 2, /* stereo only */ 93 .channels_max = 2, 94 95 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64, 96 97 /* interrupt by four stages */ 98 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 99 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4, 100 101 .periods_min = 16, 102 .periods_max = 32, /* buffer_size_max/ period_bytes_max */ 103 104 .fifo_size = PS3_AUDIO_FIFO_SIZE 105 }; 106 107 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card, 108 int count, int force_stop) 109 { 110 int dma_ch, done, retries, stop_forced = 0; 111 uint32_t status; 112 113 for (dma_ch = 0; dma_ch < 8; dma_ch++) { 114 retries = count; 115 do { 116 status = read_reg(PS3_AUDIO_KICK(dma_ch)) & 117 PS3_AUDIO_KICK_STATUS_MASK; 118 switch (status) { 119 case PS3_AUDIO_KICK_STATUS_DONE: 120 case PS3_AUDIO_KICK_STATUS_NOTIFY: 121 case PS3_AUDIO_KICK_STATUS_CLEAR: 122 case PS3_AUDIO_KICK_STATUS_ERROR: 123 done = 1; 124 break; 125 default: 126 done = 0; 127 udelay(10); 128 } 129 } while (!done && --retries); 130 if (!retries && force_stop) { 131 pr_info("%s: DMA ch %d is not stopped.", 132 __func__, dma_ch); 133 /* last resort. force to stop dma. 134 * NOTE: this cause DMA done interrupts 135 */ 136 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR); 137 stop_forced = 1; 138 } 139 } 140 return stop_forced; 141 } 142 143 /* 144 * wait for all dma is done. 145 * NOTE: caller should reset card->running before call. 146 * If not, the interrupt handler will re-start DMA, 147 * then DMA is never stopped. 148 */ 149 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card) 150 { 151 int stop_forced; 152 /* 153 * wait for the last dma is done 154 */ 155 156 /* 157 * expected maximum DMA done time is 5.7ms + something (DMA itself). 158 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next 159 * DMA kick event would occur. 160 */ 161 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1); 162 163 /* 164 * clear outstanding interrupts. 165 */ 166 update_reg(PS3_AUDIO_INTR_0, 0); 167 update_reg(PS3_AUDIO_AX_IS, 0); 168 169 /* 170 *revert CLEAR bit since it will not reset automatically after DMA stop 171 */ 172 if (stop_forced) 173 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0); 174 /* ensure the hardware sees changes */ 175 wmb(); 176 } 177 178 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card) 179 { 180 181 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST); 182 /* ensure the hardware sees the change */ 183 wmb(); 184 } 185 186 /* 187 * convert virtual addr to ioif bus addr. 188 */ 189 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card, void *paddr, int ch) 190 { 191 return card->dma_start_bus_addr[ch] + 192 (paddr - card->dma_start_vaddr[ch]); 193 }; 194 195 196 /* 197 * increment ring buffer pointer. 198 * NOTE: caller must hold write spinlock 199 */ 200 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card, 201 enum snd_ps3_ch ch, size_t byte_count, 202 int stage) 203 { 204 if (!stage) 205 card->dma_last_transfer_vaddr[ch] = 206 card->dma_next_transfer_vaddr[ch]; 207 card->dma_next_transfer_vaddr[ch] += byte_count; 208 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <= 209 card->dma_next_transfer_vaddr[ch]) { 210 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch]; 211 } 212 } 213 /* 214 * setup dmac to send data to audio and attenuate samples on the ring buffer 215 */ 216 static int snd_ps3_program_dma(struct snd_ps3_card_info *card, 217 enum snd_ps3_dma_filltype filltype) 218 { 219 /* this dmac does not support over 4G */ 220 uint32_t dma_addr; 221 int fill_stages, dma_ch, stage; 222 enum snd_ps3_ch ch; 223 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */ 224 unsigned long irqsave; 225 int silent = 0; 226 227 switch (filltype) { 228 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL: 229 silent = 1; 230 /* intentionally fall thru */ 231 case SND_PS3_DMA_FILLTYPE_FIRSTFILL: 232 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS; 233 break; 234 235 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING: 236 silent = 1; 237 /* intentionally fall thru */ 238 case SND_PS3_DMA_FILLTYPE_RUNNING: 239 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY; 240 break; 241 } 242 243 snd_ps3_verify_dma_stop(card, 700, 0); 244 fill_stages = 4; 245 spin_lock_irqsave(&card->dma_lock, irqsave); 246 for (ch = 0; ch < 2; ch++) { 247 for (stage = 0; stage < fill_stages; stage++) { 248 dma_ch = stage * 2 + ch; 249 if (silent) 250 dma_addr = card->null_buffer_start_dma_addr; 251 else 252 dma_addr = 253 v_to_bus(card, 254 card->dma_next_transfer_vaddr[ch], 255 ch); 256 257 write_reg(PS3_AUDIO_SOURCE(dma_ch), 258 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY | 259 dma_addr)); 260 261 /* dst: fixed to 3wire#0 */ 262 if (ch == 0) 263 write_reg(PS3_AUDIO_DEST(dma_ch), 264 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 265 PS3_AUDIO_AO_3W_LDATA(0))); 266 else 267 write_reg(PS3_AUDIO_DEST(dma_ch), 268 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO | 269 PS3_AUDIO_AO_3W_RDATA(0))); 270 271 /* count always 1 DMA block (1/2 stage = 128 bytes) */ 272 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0); 273 /* bump pointer if needed */ 274 if (!silent) 275 snd_ps3_bump_buffer(card, ch, 276 PS3_AUDIO_DMAC_BLOCK_SIZE, 277 stage); 278 279 /* kick event */ 280 if (dma_ch == 0) 281 write_reg(PS3_AUDIO_KICK(dma_ch), 282 ch0_kick_event); 283 else 284 write_reg(PS3_AUDIO_KICK(dma_ch), 285 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch 286 - 1) | 287 PS3_AUDIO_KICK_REQUEST); 288 } 289 } 290 /* ensure the hardware sees the change */ 291 wmb(); 292 spin_unlock_irqrestore(&card->dma_lock, irqsave); 293 294 return 0; 295 } 296 297 /* 298 * Interrupt handler 299 */ 300 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id) 301 { 302 303 uint32_t port_intr; 304 int underflow_occured = 0; 305 struct snd_ps3_card_info *card = dev_id; 306 307 if (!card->running) { 308 update_reg(PS3_AUDIO_AX_IS, 0); 309 update_reg(PS3_AUDIO_INTR_0, 0); 310 return IRQ_HANDLED; 311 } 312 313 port_intr = read_reg(PS3_AUDIO_AX_IS); 314 /* 315 *serial buffer empty detected (every 4 times), 316 *program next dma and kick it 317 */ 318 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) { 319 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0)); 320 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 321 write_reg(PS3_AUDIO_AX_IS, port_intr); 322 underflow_occured = 1; 323 } 324 if (card->silent) { 325 /* we are still in silent time */ 326 snd_ps3_program_dma(card, 327 (underflow_occured) ? 328 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL : 329 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 330 snd_ps3_kick_dma(card); 331 card->silent--; 332 } else { 333 snd_ps3_program_dma(card, 334 (underflow_occured) ? 335 SND_PS3_DMA_FILLTYPE_FIRSTFILL : 336 SND_PS3_DMA_FILLTYPE_RUNNING); 337 snd_ps3_kick_dma(card); 338 snd_pcm_period_elapsed(card->substream); 339 } 340 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) { 341 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0)); 342 /* 343 * serial out underflow, but buffer empty not detected. 344 * in this case, fill fifo with 0 to recover. After 345 * filling dummy data, serial automatically start to 346 * consume them and then will generate normal buffer 347 * empty interrupts. 348 * If both buffer underflow and buffer empty are occurred, 349 * it is better to do nomal data transfer than empty one 350 */ 351 snd_ps3_program_dma(card, 352 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 353 snd_ps3_kick_dma(card); 354 snd_ps3_program_dma(card, 355 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 356 snd_ps3_kick_dma(card); 357 } 358 /* clear interrupt cause */ 359 return IRQ_HANDLED; 360 }; 361 362 /* 363 * audio mute on/off 364 * mute_on : 0 output enabled 365 * 1 mute 366 */ 367 static int snd_ps3_mute(int mute_on) 368 { 369 return ps3av_audio_mute(mute_on); 370 } 371 372 /* 373 * av setting 374 * NOTE: calling this function may generate audio interrupt. 375 */ 376 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card) 377 { 378 int ret, retries, i; 379 pr_debug("%s: start\n", __func__); 380 381 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch, 382 card->avs.avs_audio_rate, 383 card->avs.avs_audio_width, 384 card->avs.avs_audio_format, 385 card->avs.avs_audio_source); 386 /* 387 * Reset the following unwanted settings: 388 */ 389 390 /* disable all 3wire buffers */ 391 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 392 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) | 393 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) | 394 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) | 395 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)), 396 0); 397 wmb(); /* ensure the hardware sees the change */ 398 /* wait for actually stopped */ 399 retries = 1000; 400 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) & 401 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) | 402 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) | 403 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) | 404 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) && 405 --retries) { 406 udelay(1); 407 } 408 409 /* reset buffer pointer */ 410 for (i = 0; i < 4; i++) { 411 update_reg(PS3_AUDIO_AO_3WCTRL(i), 412 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET); 413 udelay(10); 414 } 415 wmb(); /* ensure the hardware actually start resetting */ 416 417 /* enable 3wire#0 buffer */ 418 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0)); 419 420 421 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */ 422 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0), 423 ~PS3_AUDIO_AO_3WCTRL_ASODF, 424 PS3_AUDIO_AO_3WCTRL_ASODF_LSB); 425 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0), 426 ~PS3_AUDIO_AO_SPDCTRL_SPODF, 427 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB); 428 /* ensure all the setting above is written back to register */ 429 wmb(); 430 /* avsetting driver altered AX_IE, caller must reset it if you want */ 431 pr_debug("%s: end\n", __func__); 432 return ret; 433 } 434 435 /* 436 * set sampling rate according to the substream 437 */ 438 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream) 439 { 440 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 441 struct snd_ps3_avsetting_info avs; 442 int ret; 443 444 avs = card->avs; 445 446 pr_debug("%s: called freq=%d width=%d\n", __func__, 447 substream->runtime->rate, 448 snd_pcm_format_width(substream->runtime->format)); 449 450 pr_debug("%s: before freq=%d width=%d\n", __func__, 451 card->avs.avs_audio_rate, card->avs.avs_audio_width); 452 453 /* sample rate */ 454 switch (substream->runtime->rate) { 455 case 44100: 456 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K; 457 break; 458 case 48000: 459 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 460 break; 461 case 88200: 462 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K; 463 break; 464 case 96000: 465 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K; 466 break; 467 default: 468 pr_info("%s: invalid rate %d\n", __func__, 469 substream->runtime->rate); 470 return 1; 471 } 472 473 /* width */ 474 switch (snd_pcm_format_width(substream->runtime->format)) { 475 case 16: 476 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 477 break; 478 case 24: 479 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24; 480 break; 481 default: 482 pr_info("%s: invalid width %d\n", __func__, 483 snd_pcm_format_width(substream->runtime->format)); 484 return 1; 485 } 486 487 memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8); 488 489 if (memcmp(&card->avs, &avs, sizeof(avs))) { 490 pr_debug("%s: after freq=%d width=%d\n", __func__, 491 card->avs.avs_audio_rate, card->avs.avs_audio_width); 492 493 card->avs = avs; 494 snd_ps3_change_avsetting(card); 495 ret = 0; 496 } else 497 ret = 1; 498 499 /* check CS non-audio bit and mute accordingly */ 500 if (avs.avs_cs_info[0] & 0x02) 501 ps3av_audio_mute_analog(1); /* mute if non-audio */ 502 else 503 ps3av_audio_mute_analog(0); 504 505 return ret; 506 } 507 508 /* 509 * PCM operators 510 */ 511 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream) 512 { 513 struct snd_pcm_runtime *runtime = substream->runtime; 514 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 515 516 /* to retrieve substream/runtime in interrupt handler */ 517 card->substream = substream; 518 519 runtime->hw = snd_ps3_pcm_hw; 520 521 card->start_delay = snd_ps3_start_delay; 522 523 /* mute off */ 524 snd_ps3_mute(0); /* this function sleep */ 525 526 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 527 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2); 528 return 0; 529 }; 530 531 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream) 532 { 533 /* mute on */ 534 snd_ps3_mute(1); 535 return 0; 536 }; 537 538 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream, 539 struct snd_pcm_hw_params *hw_params) 540 { 541 size_t size; 542 543 /* alloc transport buffer */ 544 size = params_buffer_bytes(hw_params); 545 snd_pcm_lib_malloc_pages(substream, size); 546 return 0; 547 }; 548 549 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream) 550 { 551 return snd_pcm_lib_free_pages(substream); 552 }; 553 554 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream, 555 unsigned int delay_ms) 556 { 557 int ret; 558 int rate ; 559 560 rate = substream->runtime->rate; 561 ret = snd_pcm_format_size(substream->runtime->format, 562 rate * delay_ms / 1000) 563 * substream->runtime->channels; 564 565 pr_debug("%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n", 566 __func__, 567 delay_ms, 568 rate, 569 snd_pcm_format_size(substream->runtime->format, rate), 570 rate * delay_ms / 1000, 571 ret); 572 573 return ret; 574 }; 575 576 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream) 577 { 578 struct snd_pcm_runtime *runtime = substream->runtime; 579 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 580 unsigned long irqsave; 581 582 if (!snd_ps3_set_avsetting(substream)) { 583 /* some parameter changed */ 584 write_reg(PS3_AUDIO_AX_IE, 585 PS3_AUDIO_AX_IE_ASOBEIE(0) | 586 PS3_AUDIO_AX_IE_ASOBUIE(0)); 587 /* 588 * let SPDIF device re-lock with SPDIF signal, 589 * start with some silence 590 */ 591 card->silent = snd_ps3_delay_to_bytes(substream, 592 card->start_delay) / 593 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */ 594 } 595 596 /* restart ring buffer pointer */ 597 spin_lock_irqsave(&card->dma_lock, irqsave); 598 { 599 card->dma_buffer_size = runtime->dma_bytes; 600 601 card->dma_last_transfer_vaddr[SND_PS3_CH_L] = 602 card->dma_next_transfer_vaddr[SND_PS3_CH_L] = 603 card->dma_start_vaddr[SND_PS3_CH_L] = 604 runtime->dma_area; 605 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr; 606 607 card->dma_last_transfer_vaddr[SND_PS3_CH_R] = 608 card->dma_next_transfer_vaddr[SND_PS3_CH_R] = 609 card->dma_start_vaddr[SND_PS3_CH_R] = 610 runtime->dma_area + (runtime->dma_bytes / 2); 611 card->dma_start_bus_addr[SND_PS3_CH_R] = 612 runtime->dma_addr + (runtime->dma_bytes / 2); 613 614 pr_debug("%s: vaddr=%p bus=%#llx\n", __func__, 615 card->dma_start_vaddr[SND_PS3_CH_L], 616 card->dma_start_bus_addr[SND_PS3_CH_L]); 617 618 } 619 spin_unlock_irqrestore(&card->dma_lock, irqsave); 620 621 /* ensure the hardware sees the change */ 622 mb(); 623 624 return 0; 625 }; 626 627 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream, 628 int cmd) 629 { 630 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 631 632 switch (cmd) { 633 case SNDRV_PCM_TRIGGER_START: 634 /* clear outstanding interrupts */ 635 update_reg(PS3_AUDIO_AX_IS, 0); 636 637 spin_lock(&card->dma_lock); 638 { 639 card->running = 1; 640 } 641 spin_unlock(&card->dma_lock); 642 643 snd_ps3_program_dma(card, 644 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 645 snd_ps3_kick_dma(card); 646 while (read_reg(PS3_AUDIO_KICK(7)) & 647 PS3_AUDIO_KICK_STATUS_MASK) { 648 udelay(1); 649 } 650 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING); 651 snd_ps3_kick_dma(card); 652 break; 653 654 case SNDRV_PCM_TRIGGER_STOP: 655 spin_lock(&card->dma_lock); 656 { 657 card->running = 0; 658 } 659 spin_unlock(&card->dma_lock); 660 snd_ps3_wait_for_dma_stop(card); 661 break; 662 default: 663 break; 664 665 } 666 667 return 0; 668 }; 669 670 /* 671 * report current pointer 672 */ 673 static snd_pcm_uframes_t snd_ps3_pcm_pointer( 674 struct snd_pcm_substream *substream) 675 { 676 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream); 677 size_t bytes; 678 snd_pcm_uframes_t ret; 679 680 spin_lock(&card->dma_lock); 681 { 682 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] - 683 card->dma_start_vaddr[SND_PS3_CH_L]); 684 } 685 spin_unlock(&card->dma_lock); 686 687 ret = bytes_to_frames(substream->runtime, bytes * 2); 688 689 return ret; 690 }; 691 692 /* 693 * SPDIF status bits controls 694 */ 695 static int snd_ps3_spdif_mask_info(struct snd_kcontrol *kcontrol, 696 struct snd_ctl_elem_info *uinfo) 697 { 698 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; 699 uinfo->count = 1; 700 return 0; 701 } 702 703 /* FIXME: ps3av_set_audio_mode() assumes only consumer mode */ 704 static int snd_ps3_spdif_cmask_get(struct snd_kcontrol *kcontrol, 705 struct snd_ctl_elem_value *ucontrol) 706 { 707 memset(ucontrol->value.iec958.status, 0xff, 8); 708 return 0; 709 } 710 711 static int snd_ps3_spdif_pmask_get(struct snd_kcontrol *kcontrol, 712 struct snd_ctl_elem_value *ucontrol) 713 { 714 return 0; 715 } 716 717 static int snd_ps3_spdif_default_get(struct snd_kcontrol *kcontrol, 718 struct snd_ctl_elem_value *ucontrol) 719 { 720 memcpy(ucontrol->value.iec958.status, ps3av_mode_cs_info, 8); 721 return 0; 722 } 723 724 static int snd_ps3_spdif_default_put(struct snd_kcontrol *kcontrol, 725 struct snd_ctl_elem_value *ucontrol) 726 { 727 if (memcmp(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8)) { 728 memcpy(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8); 729 return 1; 730 } 731 return 0; 732 } 733 734 static struct snd_kcontrol_new spdif_ctls[] = { 735 { 736 .access = SNDRV_CTL_ELEM_ACCESS_READ, 737 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 738 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK), 739 .info = snd_ps3_spdif_mask_info, 740 .get = snd_ps3_spdif_cmask_get, 741 }, 742 { 743 .access = SNDRV_CTL_ELEM_ACCESS_READ, 744 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 745 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK), 746 .info = snd_ps3_spdif_mask_info, 747 .get = snd_ps3_spdif_pmask_get, 748 }, 749 { 750 .iface = SNDRV_CTL_ELEM_IFACE_PCM, 751 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), 752 .info = snd_ps3_spdif_mask_info, 753 .get = snd_ps3_spdif_default_get, 754 .put = snd_ps3_spdif_default_put, 755 }, 756 }; 757 758 static const struct snd_pcm_ops snd_ps3_pcm_spdif_ops = { 759 .open = snd_ps3_pcm_open, 760 .close = snd_ps3_pcm_close, 761 .ioctl = snd_pcm_lib_ioctl, 762 .hw_params = snd_ps3_pcm_hw_params, 763 .hw_free = snd_ps3_pcm_hw_free, 764 .prepare = snd_ps3_pcm_prepare, 765 .trigger = snd_ps3_pcm_trigger, 766 .pointer = snd_ps3_pcm_pointer, 767 }; 768 769 770 static int snd_ps3_map_mmio(void) 771 { 772 the_card.mapped_mmio_vaddr = 773 ioremap(the_card.ps3_dev->m_region->bus_addr, 774 the_card.ps3_dev->m_region->len); 775 776 if (!the_card.mapped_mmio_vaddr) { 777 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n", 778 __func__, the_card.ps3_dev->m_region->lpar_addr, 779 the_card.ps3_dev->m_region->len); 780 return -ENXIO; 781 } 782 783 return 0; 784 }; 785 786 static void snd_ps3_unmap_mmio(void) 787 { 788 iounmap(the_card.mapped_mmio_vaddr); 789 the_card.mapped_mmio_vaddr = NULL; 790 } 791 792 static int snd_ps3_allocate_irq(void) 793 { 794 int ret; 795 u64 lpar_addr, lpar_size; 796 u64 __iomem *mapped; 797 798 /* FIXME: move this to device_init (H/W probe) */ 799 800 /* get irq outlet */ 801 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size); 802 if (ret) { 803 pr_info("%s: device map 1 failed %d\n", __func__, 804 ret); 805 return -ENXIO; 806 } 807 808 mapped = ioremap(lpar_addr, lpar_size); 809 if (!mapped) { 810 pr_info("%s: ioremap 1 failed \n", __func__); 811 return -ENXIO; 812 } 813 814 the_card.audio_irq_outlet = in_be64(mapped); 815 816 iounmap(mapped); 817 ret = lv1_gpu_device_unmap(1); 818 if (ret) 819 pr_info("%s: unmap 1 failed\n", __func__); 820 821 /* irq */ 822 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, 823 the_card.audio_irq_outlet, 824 &the_card.irq_no); 825 if (ret) { 826 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret); 827 return ret; 828 } 829 830 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, 0, 831 SND_PS3_DRIVER_NAME, &the_card); 832 if (ret) { 833 pr_info("%s: request_irq failed (%d)\n", __func__, ret); 834 goto cleanup_irq; 835 } 836 837 return 0; 838 839 cleanup_irq: 840 ps3_irq_plug_destroy(the_card.irq_no); 841 return ret; 842 }; 843 844 static void snd_ps3_free_irq(void) 845 { 846 free_irq(the_card.irq_no, &the_card); 847 ps3_irq_plug_destroy(the_card.irq_no); 848 } 849 850 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start) 851 { 852 uint64_t val; 853 int ret; 854 855 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) | 856 (0x03UL << 24) | 857 (0x0fUL << 12) | 858 (PS3_AUDIO_IOID); 859 860 ret = lv1_gpu_attribute(0x100, 0x007, val); 861 if (ret) 862 pr_info("%s: gpu_attribute failed %d\n", __func__, 863 ret); 864 } 865 866 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card) 867 { 868 /* 869 * avsetting driver seems to never change the following 870 * so, init them here once 871 */ 872 873 /* no dma interrupt needed */ 874 write_reg(PS3_AUDIO_INTR_EN_0, 0); 875 876 /* use every 4 buffer empty interrupt */ 877 update_mask_reg(PS3_AUDIO_AX_IC, 878 PS3_AUDIO_AX_IC_AASOIMD_MASK, 879 PS3_AUDIO_AX_IC_AASOIMD_EVERY4); 880 881 /* enable 3wire clocks */ 882 update_mask_reg(PS3_AUDIO_AO_3WMCTRL, 883 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED | 884 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED), 885 0); 886 update_reg(PS3_AUDIO_AO_3WMCTRL, 887 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT); 888 } 889 890 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card) 891 { 892 int ret; 893 pr_debug("%s: start\n", __func__); 894 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2; 895 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K; 896 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16; 897 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM; 898 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL; 899 memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8); 900 901 ret = snd_ps3_change_avsetting(card); 902 903 snd_ps3_audio_fixup(card); 904 905 /* to start to generate SPDIF signal, fill data */ 906 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL); 907 snd_ps3_kick_dma(card); 908 pr_debug("%s: end\n", __func__); 909 return ret; 910 } 911 912 static int snd_ps3_driver_probe(struct ps3_system_bus_device *dev) 913 { 914 int i, ret; 915 u64 lpar_addr, lpar_size; 916 static u64 dummy_mask; 917 918 if (WARN_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1))) 919 return -ENODEV; 920 if (WARN_ON(dev->match_id != PS3_MATCH_ID_SOUND)) 921 return -ENODEV; 922 923 the_card.ps3_dev = dev; 924 925 ret = ps3_open_hv_device(dev); 926 927 if (ret) 928 return -ENXIO; 929 930 /* setup MMIO */ 931 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size); 932 if (ret) { 933 pr_info("%s: device map 2 failed %d\n", __func__, ret); 934 goto clean_open; 935 } 936 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size, 937 PAGE_SHIFT); 938 939 ret = snd_ps3_map_mmio(); 940 if (ret) 941 goto clean_dev_map; 942 943 /* setup DMA area */ 944 ps3_dma_region_init(dev, dev->d_region, 945 PAGE_SHIFT, /* use system page size */ 946 0, /* dma type; not used */ 947 NULL, 948 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE)); 949 dev->d_region->ioid = PS3_AUDIO_IOID; 950 951 ret = ps3_dma_region_create(dev->d_region); 952 if (ret) { 953 pr_info("%s: region_create\n", __func__); 954 goto clean_mmio; 955 } 956 957 dummy_mask = DMA_BIT_MASK(32); 958 dev->core.dma_mask = &dummy_mask; 959 dma_set_coherent_mask(&dev->core, dummy_mask); 960 961 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr); 962 963 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */ 964 the_card.start_delay = snd_ps3_start_delay; 965 966 /* irq */ 967 if (snd_ps3_allocate_irq()) { 968 ret = -ENXIO; 969 goto clean_dma_region; 970 } 971 972 /* create card instance */ 973 ret = snd_card_new(&dev->core, index, id, THIS_MODULE, 974 0, &the_card.card); 975 if (ret < 0) 976 goto clean_irq; 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 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 1016 /* 1017 * allocate null buffer 1018 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2 1019 * PAGE_SIZE is enogh 1020 */ 1021 the_card.null_buffer_start_vaddr = 1022 dma_alloc_coherent(&the_card.ps3_dev->core, 1023 PAGE_SIZE, 1024 &the_card.null_buffer_start_dma_addr, 1025 GFP_KERNEL); 1026 if (!the_card.null_buffer_start_vaddr) { 1027 pr_info("%s: nullbuffer alloc failed\n", __func__); 1028 ret = -ENOMEM; 1029 goto clean_card; 1030 } 1031 pr_debug("%s: null vaddr=%p dma=%#llx\n", __func__, 1032 the_card.null_buffer_start_vaddr, 1033 the_card.null_buffer_start_dma_addr); 1034 /* set default sample rate/word width */ 1035 snd_ps3_init_avsetting(&the_card); 1036 1037 /* register the card */ 1038 ret = snd_card_register(the_card.card); 1039 if (ret < 0) 1040 goto clean_dma_map; 1041 1042 pr_info("%s started. start_delay=%dms\n", 1043 the_card.card->longname, the_card.start_delay); 1044 return 0; 1045 1046 clean_dma_map: 1047 dma_free_coherent(&the_card.ps3_dev->core, 1048 PAGE_SIZE, 1049 the_card.null_buffer_start_vaddr, 1050 the_card.null_buffer_start_dma_addr); 1051 clean_card: 1052 snd_card_free(the_card.card); 1053 clean_irq: 1054 snd_ps3_free_irq(); 1055 clean_dma_region: 1056 ps3_dma_region_free(dev->d_region); 1057 clean_mmio: 1058 snd_ps3_unmap_mmio(); 1059 clean_dev_map: 1060 lv1_gpu_device_unmap(2); 1061 clean_open: 1062 ps3_close_hv_device(dev); 1063 /* 1064 * there is no destructor function to pcm. 1065 * midlayer automatically releases if the card removed 1066 */ 1067 return ret; 1068 }; /* snd_ps3_probe */ 1069 1070 /* called when module removal */ 1071 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev) 1072 { 1073 int ret; 1074 pr_info("%s:start id=%d\n", __func__, dev->match_id); 1075 if (dev->match_id != PS3_MATCH_ID_SOUND) 1076 return -ENXIO; 1077 1078 /* 1079 * ctl and preallocate buffer will be freed in 1080 * snd_card_free 1081 */ 1082 ret = snd_card_free(the_card.card); 1083 if (ret) 1084 pr_info("%s: ctl freecard=%d\n", __func__, ret); 1085 1086 dma_free_coherent(&dev->core, 1087 PAGE_SIZE, 1088 the_card.null_buffer_start_vaddr, 1089 the_card.null_buffer_start_dma_addr); 1090 1091 ps3_dma_region_free(dev->d_region); 1092 1093 snd_ps3_free_irq(); 1094 snd_ps3_unmap_mmio(); 1095 1096 lv1_gpu_device_unmap(2); 1097 ps3_close_hv_device(dev); 1098 pr_info("%s:end id=%d\n", __func__, dev->match_id); 1099 return 0; 1100 } /* snd_ps3_remove */ 1101 1102 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = { 1103 .match_id = PS3_MATCH_ID_SOUND, 1104 .probe = snd_ps3_driver_probe, 1105 .remove = snd_ps3_driver_remove, 1106 .shutdown = snd_ps3_driver_remove, 1107 .core = { 1108 .name = SND_PS3_DRIVER_NAME, 1109 .owner = THIS_MODULE, 1110 }, 1111 }; 1112 1113 1114 /* 1115 * module/subsystem initialize/terminate 1116 */ 1117 static int __init snd_ps3_init(void) 1118 { 1119 int ret; 1120 1121 if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 1122 return -ENXIO; 1123 1124 memset(&the_card, 0, sizeof(the_card)); 1125 spin_lock_init(&the_card.dma_lock); 1126 1127 /* register systembus DRIVER, this calls our probe() func */ 1128 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info); 1129 1130 return ret; 1131 } 1132 module_init(snd_ps3_init); 1133 1134 static void __exit snd_ps3_exit(void) 1135 { 1136 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info); 1137 } 1138 module_exit(snd_ps3_exit); 1139 1140 MODULE_LICENSE("GPL v2"); 1141 MODULE_DESCRIPTION("PS3 sound driver"); 1142 MODULE_AUTHOR("Sony Computer Entertainment Inc."); 1143 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND); 1144