sound/ppc/snd_ps3.c

   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);