sound/soc/sh/siu_dai.c

   1 /*
   2  * siu_dai.c - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
   3  *
   4  * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
   5  * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
   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 as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/delay.h>
  23 #include <linux/firmware.h>
  24 #include <linux/pm_runtime.h>
  25
  26 #include <asm/clock.h>
  27 #include <asm/siu.h>
  28
  29 #include <sound/control.h>
  30 #include <sound/soc-dai.h>
  31
  32 #include "siu.h"
  33
  34 /* Board specifics */
  35 #if defined(CONFIG_CPU_SUBTYPE_SH7722)
  36 # define SIU_MAX_VOLUME         0x1000
  37 #else
  38 # define SIU_MAX_VOLUME         0x7fff
  39 #endif
  40
  41 #define PRAM_SIZE       0x2000
  42 #define XRAM_SIZE       0x800
  43 #define YRAM_SIZE       0x800
  44
  45 #define XRAM_OFFSET     0x4000
  46 #define YRAM_OFFSET     0x6000
  47 #define REG_OFFSET      0xc000
  48
  49 #define PLAYBACK_ENABLED        1
  50 #define CAPTURE_ENABLED         2
  51
  52 #define VOLUME_CAPTURE          0
  53 #define VOLUME_PLAYBACK         1
  54 #define DFLT_VOLUME_LEVEL       0x08000800
  55
  56 /*
  57  * SPDIF is only available on port A and on some SIU implementations it is only
  58  * available for input. Due to the lack of hardware to test it, SPDIF is left
  59  * disabled in this driver version
  60  */
  61 struct format_flag {
  62         u32     i2s;
  63         u32     pcm;
  64         u32     spdif;
  65         u32     mask;
  66 };
  67
  68 struct port_flag {
  69         struct format_flag      playback;
  70         struct format_flag      capture;
  71 };
  72
  73 static struct port_flag siu_flags[SIU_PORT_NUM] = {
  74         [SIU_PORT_A] = {
  75                 .playback = {
  76                         .i2s    = 0x50000000,
  77                         .pcm    = 0x40000000,
  78                         .spdif  = 0x80000000,   /* not on all SIU versions */
  79                         .mask   = 0xd0000000,
  80                 },
  81                 .capture = {
  82                         .i2s    = 0x05000000,
  83                         .pcm    = 0x04000000,
  84                         .spdif  = 0x08000000,
  85                         .mask   = 0x0d000000,
  86                 },
  87         },
  88         [SIU_PORT_B] = {
  89                 .playback = {
  90                         .i2s    = 0x00500000,
  91                         .pcm    = 0x00400000,
  92                         .spdif  = 0,            /* impossible - turn off */
  93                         .mask   = 0x00500000,
  94                 },
  95                 .capture = {
  96                         .i2s    = 0x00050000,
  97                         .pcm    = 0x00040000,
  98                         .spdif  = 0,            /* impossible - turn off */
  99                         .mask   = 0x00050000,
 100                 },
 101         },
 102 };
 103
 104 static void siu_dai_start(struct siu_port *port_info)
 105 {
 106         struct siu_info *info = siu_i2s_dai.private_data;
 107         u32 __iomem *base = info->reg;
 108
 109         dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
 110
 111         /* Turn on SIU clock */
 112         pm_runtime_get_sync(siu_i2s_dai.dev);
 113
 114         /* Issue software reset to siu */
 115         siu_write32(base + SIU_SRCTL, 0);
 116
 117         /* Wait for the reset to take effect */
 118         udelay(1);
 119
 120         port_info->stfifo = 0;
 121         port_info->trdat = 0;
 122
 123         /* portA, portB, SIU operate */
 124         siu_write32(base + SIU_SRCTL, 0x301);
 125
 126         /* portA=256fs, portB=256fs */
 127         siu_write32(base + SIU_CKCTL, 0x40400000);
 128
 129         /* portA's BRG does not divide SIUCKA */
 130         siu_write32(base + SIU_BRGASEL, 0);
 131         siu_write32(base + SIU_BRRA, 0);
 132
 133         /* portB's BRG divides SIUCKB by half */
 134         siu_write32(base + SIU_BRGBSEL, 1);
 135         siu_write32(base + SIU_BRRB, 0);
 136
 137         siu_write32(base + SIU_IFCTL, 0x44440000);
 138
 139         /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */
 140         siu_write32(base + SIU_SFORM, 0x0c0c0000);
 141
 142         /*
 143          * Volume levels: looks like the DSP firmware implements volume controls
 144          * differently from what's described in the datasheet
 145          */
 146         siu_write32(base + SIU_SBDVCA, port_info->playback.volume);
 147         siu_write32(base + SIU_SBDVCB, port_info->capture.volume);
 148 }
 149
 150 static void siu_dai_stop(void)
 151 {
 152         struct siu_info *info = siu_i2s_dai.private_data;
 153         u32 __iomem *base = info->reg;
 154
 155         /* SIU software reset */
 156         siu_write32(base + SIU_SRCTL, 0);
 157
 158         /* Turn off SIU clock */
 159         pm_runtime_put_sync(siu_i2s_dai.dev);
 160 }
 161
 162 static void siu_dai_spbAselect(struct siu_port *port_info)
 163 {
 164         struct siu_info *info = siu_i2s_dai.private_data;
 165         struct siu_firmware *fw = &info->fw;
 166         u32 *ydef = fw->yram0;
 167         u32 idx;
 168
 169         /* path A use */
 170         if (!info->port_id)
 171                 idx = 1;                /* portA */
 172         else
 173                 idx = 2;                /* portB */
 174
 175         ydef[0] = (fw->spbpar[idx].ab1a << 16) |
 176                 (fw->spbpar[idx].ab0a << 8) |
 177                 (fw->spbpar[idx].dir << 7) | 3;
 178         ydef[1] = fw->yram0[1]; /* 0x03000300 */
 179         ydef[2] = (16 / 2) << 24;
 180         ydef[3] = fw->yram0[3]; /* 0 */
 181         ydef[4] = fw->yram0[4]; /* 0 */
 182         ydef[7] = fw->spbpar[idx].event;
 183         port_info->stfifo |= fw->spbpar[idx].stfifo;
 184         port_info->trdat |= fw->spbpar[idx].trdat;
 185 }
 186
 187 static void siu_dai_spbBselect(struct siu_port *port_info)
 188 {
 189         struct siu_info *info = siu_i2s_dai.private_data;
 190         struct siu_firmware *fw = &info->fw;
 191         u32 *ydef = fw->yram0;
 192         u32 idx;
 193
 194         /* path B use */
 195         if (!info->port_id)
 196                 idx = 7;                /* portA */
 197         else
 198                 idx = 8;                /* portB */
 199
 200         ydef[5] = (fw->spbpar[idx].ab1a << 16) |
 201                 (fw->spbpar[idx].ab0a << 8) | 1;
 202         ydef[6] = fw->spbpar[idx].event;
 203         port_info->stfifo |= fw->spbpar[idx].stfifo;
 204         port_info->trdat |= fw->spbpar[idx].trdat;
 205 }
 206
 207 static void siu_dai_open(struct siu_stream *siu_stream)
 208 {
 209         struct siu_info *info = siu_i2s_dai.private_data;
 210         u32 __iomem *base = info->reg;
 211         u32 srctl, ifctl;
 212
 213         srctl = siu_read32(base + SIU_SRCTL);
 214         ifctl = siu_read32(base + SIU_IFCTL);
 215
 216         switch (info->port_id) {
 217         case SIU_PORT_A:
 218                 /* portA operates */
 219                 srctl |= 0x200;
 220                 ifctl &= ~0xc2;
 221                 break;
 222         case SIU_PORT_B:
 223                 /* portB operates */
 224                 srctl |= 0x100;
 225                 ifctl &= ~0x31;
 226                 break;
 227         }
 228
 229         siu_write32(base + SIU_SRCTL, srctl);
 230         /* Unmute and configure portA */
 231         siu_write32(base + SIU_IFCTL, ifctl);
 232 }
 233
 234 /*
 235  * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower
 236  * packing is supported
 237  */
 238 static void siu_dai_pcmdatapack(struct siu_stream *siu_stream)
 239 {
 240         struct siu_info *info = siu_i2s_dai.private_data;
 241         u32 __iomem *base = info->reg;
 242         u32 dpak;
 243
 244         dpak = siu_read32(base + SIU_DPAK);
 245
 246         switch (info->port_id) {
 247         case SIU_PORT_A:
 248                 dpak &= ~0xc0000000;
 249                 break;
 250         case SIU_PORT_B:
 251                 dpak &= ~0x00c00000;
 252                 break;
 253         }
 254
 255         siu_write32(base + SIU_DPAK, dpak);
 256 }
 257
 258 static int siu_dai_spbstart(struct siu_port *port_info)
 259 {
 260         struct siu_info *info = siu_i2s_dai.private_data;
 261         u32 __iomem *base = info->reg;
 262         struct siu_firmware *fw = &info->fw;
 263         u32 *ydef = fw->yram0;
 264         int cnt;
 265         u32 __iomem *add;
 266         u32 *ptr;
 267
 268         /* Load SPB Program in PRAM */
 269         ptr = fw->pram0;
 270         add = info->pram;
 271         for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++)
 272                 siu_write32(add, *ptr);
 273
 274         ptr = fw->pram1;
 275         add = info->pram + (0x0100 / sizeof(u32));
 276         for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++)
 277                 siu_write32(add, *ptr);
 278
 279         /* XRAM initialization */
 280         add = info->xram;
 281         for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++)
 282                 siu_write32(add, 0);
 283
 284         /* YRAM variable area initialization */
 285         add = info->yram;
 286         for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++)
 287                 siu_write32(add, ydef[cnt]);
 288
 289         /* YRAM FIR coefficient area initialization */
 290         add = info->yram + (0x0200 / sizeof(u32));
 291         for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++)
 292                 siu_write32(add, fw->yram_fir_coeff[cnt]);
 293
 294         /* YRAM IIR coefficient area initialization */
 295         add = info->yram + (0x0600 / sizeof(u32));
 296         for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++)
 297                 siu_write32(add, 0);
 298
 299         siu_write32(base + SIU_TRDAT, port_info->trdat);
 300         port_info->trdat = 0x0;
 301
 302
 303         /* SPB start condition: software */
 304         siu_write32(base + SIU_SBACTIV, 0);
 305         /* Start SPB */
 306         siu_write32(base + SIU_SBCTL, 0xc0000000);
 307         /* Wait for program to halt */
 308         cnt = 0x10000;
 309         while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000)
 310                 cpu_relax();
 311
 312         if (!cnt)
 313                 return -EBUSY;
 314
 315         /* SPB program start address setting */
 316         siu_write32(base + SIU_SBPSET, 0x00400000);
 317         /* SPB hardware start(FIFOCTL source) */
 318         siu_write32(base + SIU_SBACTIV, 0xc0000000);
 319
 320         return 0;
 321 }
 322
 323 static void siu_dai_spbstop(struct siu_port *port_info)
 324 {
 325         struct siu_info *info = siu_i2s_dai.private_data;
 326         u32 __iomem *base = info->reg;
 327
 328         siu_write32(base + SIU_SBACTIV, 0);
 329         /* SPB stop */
 330         siu_write32(base + SIU_SBCTL, 0);
 331
 332         port_info->stfifo = 0;
 333 }
 334
 335 /*              API functions           */
 336
 337 /* Playback and capture hardware properties are identical */
 338 static struct snd_pcm_hardware siu_dai_pcm_hw = {
 339         .info                   = SNDRV_PCM_INFO_INTERLEAVED,
 340         .formats                = SNDRV_PCM_FMTBIT_S16,
 341         .rates                  = SNDRV_PCM_RATE_8000_48000,
 342         .rate_min               = 8000,
 343         .rate_max               = 48000,
 344         .channels_min           = 2,
 345         .channels_max           = 2,
 346         .buffer_bytes_max       = SIU_BUFFER_BYTES_MAX,
 347         .period_bytes_min       = SIU_PERIOD_BYTES_MIN,
 348         .period_bytes_max       = SIU_PERIOD_BYTES_MAX,
 349         .periods_min            = SIU_PERIODS_MIN,
 350         .periods_max            = SIU_PERIODS_MAX,
 351 };
 352
 353 static int siu_dai_info_volume(struct snd_kcontrol *kctrl,
 354                                struct snd_ctl_elem_info *uinfo)
 355 {
 356         struct siu_port *port_info = snd_kcontrol_chip(kctrl);
 357
 358         dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
 359
 360         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 361         uinfo->count = 2;
 362         uinfo->value.integer.min = 0;
 363         uinfo->value.integer.max = SIU_MAX_VOLUME;
 364
 365         return 0;
 366 }
 367
 368 static int siu_dai_get_volume(struct snd_kcontrol *kctrl,
 369                               struct snd_ctl_elem_value *ucontrol)
 370 {
 371         struct siu_port *port_info = snd_kcontrol_chip(kctrl);
 372         struct device *dev = port_info->pcm->card->dev;
 373         u32 vol;
 374
 375         dev_dbg(dev, "%s\n", __func__);
 376
 377         switch (kctrl->private_value) {
 378         case VOLUME_PLAYBACK:
 379                 /* Playback is always on port 0 */
 380                 vol = port_info->playback.volume;
 381                 ucontrol->value.integer.value[0] = vol & 0xffff;
 382                 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
 383                 break;
 384         case VOLUME_CAPTURE:
 385                 /* Capture is always on port 1 */
 386                 vol = port_info->capture.volume;
 387                 ucontrol->value.integer.value[0] = vol & 0xffff;
 388                 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
 389                 break;
 390         default:
 391                 dev_err(dev, "%s() invalid private_value=%ld\n",
 392                         __func__, kctrl->private_value);
 393                 return -EINVAL;
 394         }
 395
 396         return 0;
 397 }
 398
 399 static int siu_dai_put_volume(struct snd_kcontrol *kctrl,
 400                               struct snd_ctl_elem_value *ucontrol)
 401 {
 402         struct siu_port *port_info = snd_kcontrol_chip(kctrl);
 403         struct device *dev = port_info->pcm->card->dev;
 404         struct siu_info *info = siu_i2s_dai.private_data;
 405         u32 __iomem *base = info->reg;
 406         u32 new_vol;
 407         u32 cur_vol;
 408
 409         dev_dbg(dev, "%s\n", __func__);
 410
 411         if (ucontrol->value.integer.value[0] < 0 ||
 412             ucontrol->value.integer.value[0] > SIU_MAX_VOLUME ||
 413             ucontrol->value.integer.value[1] < 0 ||
 414             ucontrol->value.integer.value[1] > SIU_MAX_VOLUME)
 415                 return -EINVAL;
 416
 417         new_vol = ucontrol->value.integer.value[0] |
 418                 ucontrol->value.integer.value[1] << 16;
 419
 420         /* See comment above - DSP firmware implementation */
 421         switch (kctrl->private_value) {
 422         case VOLUME_PLAYBACK:
 423                 /* Playback is always on port 0 */
 424                 cur_vol = port_info->playback.volume;
 425                 siu_write32(base + SIU_SBDVCA, new_vol);
 426                 port_info->playback.volume = new_vol;
 427                 break;
 428         case VOLUME_CAPTURE:
 429                 /* Capture is always on port 1 */
 430                 cur_vol = port_info->capture.volume;
 431                 siu_write32(base + SIU_SBDVCB, new_vol);
 432                 port_info->capture.volume = new_vol;
 433                 break;
 434         default:
 435                 dev_err(dev, "%s() invalid private_value=%ld\n",
 436                         __func__, kctrl->private_value);
 437                 return -EINVAL;
 438         }
 439
 440         if (cur_vol != new_vol)
 441                 return 1;
 442
 443         return 0;
 444 }
 445
 446 static struct snd_kcontrol_new playback_controls = {
 447         .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
 448         .name           = "PCM Playback Volume",
 449         .index          = 0,
 450         .info           = siu_dai_info_volume,
 451         .get            = siu_dai_get_volume,
 452         .put            = siu_dai_put_volume,
 453         .private_value  = VOLUME_PLAYBACK,
 454 };
 455
 456 static struct snd_kcontrol_new capture_controls = {
 457         .iface          = SNDRV_CTL_ELEM_IFACE_MIXER,
 458         .name           = "PCM Capture Volume",
 459         .index          = 0,
 460         .info           = siu_dai_info_volume,
 461         .get            = siu_dai_get_volume,
 462         .put            = siu_dai_put_volume,
 463         .private_value  = VOLUME_CAPTURE,
 464 };
 465
 466 int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card)
 467 {
 468         struct device *dev = card->dev;
 469         struct snd_kcontrol *kctrl;
 470         int ret;
 471
 472         *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL);
 473         if (!*port_info)
 474                 return -ENOMEM;
 475
 476         dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info);
 477
 478         (*port_info)->playback.volume = DFLT_VOLUME_LEVEL;
 479         (*port_info)->capture.volume = DFLT_VOLUME_LEVEL;
 480
 481         /*
 482          * Add mixer support. The SPB is used to change the volume. Both
 483          * ports use the same SPB. Therefore, we only register one
 484          * control instance since it will be used by both channels.
 485          * In error case we continue without controls.
 486          */
 487         kctrl = snd_ctl_new1(&playback_controls, *port_info);
 488         ret = snd_ctl_add(card, kctrl);
 489         if (ret < 0)
 490                 dev_err(dev,
 491                         "failed to add playback controls %p port=%d err=%d\n",
 492                         kctrl, port, ret);
 493
 494         kctrl = snd_ctl_new1(&capture_controls, *port_info);
 495         ret = snd_ctl_add(card, kctrl);
 496         if (ret < 0)
 497                 dev_err(dev,
 498                         "failed to add capture controls %p port=%d err=%d\n",
 499                         kctrl, port, ret);
 500
 501         return 0;
 502 }
 503
 504 void siu_free_port(struct siu_port *port_info)
 505 {
 506         kfree(port_info);
 507 }
 508
 509 static int siu_dai_startup(struct snd_pcm_substream *substream,
 510                            struct snd_soc_dai *dai)
 511 {
 512         struct siu_info *info = siu_i2s_dai.private_data;
 513         struct snd_pcm_runtime *rt = substream->runtime;
 514         struct siu_port *port_info = siu_port_info(substream);
 515         int ret;
 516
 517         dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
 518                 info->port_id, port_info);
 519
 520         snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw);
 521
 522         ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
 523         if (unlikely(ret < 0))
 524                 return ret;
 525
 526         siu_dai_start(port_info);
 527
 528         return 0;
 529 }
 530
 531 static void siu_dai_shutdown(struct snd_pcm_substream *substream,
 532                              struct snd_soc_dai *dai)
 533 {
 534         struct siu_info *info = siu_i2s_dai.private_data;
 535         struct siu_port *port_info = siu_port_info(substream);
 536
 537         dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
 538                 info->port_id, port_info);
 539
 540         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 541                 port_info->play_cap &= ~PLAYBACK_ENABLED;
 542         else
 543                 port_info->play_cap &= ~CAPTURE_ENABLED;
 544
 545         /* Stop the siu if the other stream is not using it */
 546         if (!port_info->play_cap) {
 547                 /* during stmread or stmwrite ? */
 548                 BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg);
 549                 siu_dai_spbstop(port_info);
 550                 siu_dai_stop();
 551         }
 552 }
 553
 554 /* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */
 555 static int siu_dai_prepare(struct snd_pcm_substream *substream,
 556                            struct snd_soc_dai *dai)
 557 {
 558         struct siu_info *info = siu_i2s_dai.private_data;
 559         struct snd_pcm_runtime *rt = substream->runtime;
 560         struct siu_port *port_info = siu_port_info(substream);
 561         struct siu_stream *siu_stream;
 562         int self, ret;
 563
 564         dev_dbg(substream->pcm->card->dev,
 565                 "%s: port %d, active streams %lx, %d channels\n",
 566                 __func__, info->port_id, port_info->play_cap, rt->channels);
 567
 568         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 569                 self = PLAYBACK_ENABLED;
 570                 siu_stream = &port_info->playback;
 571         } else {
 572                 self = CAPTURE_ENABLED;
 573                 siu_stream = &port_info->capture;
 574         }
 575
 576         /* Set up the siu if not already done */
 577         if (!port_info->play_cap) {
 578                 siu_stream->rw_flg = 0; /* stream-data transfer flag */
 579
 580                 siu_dai_spbAselect(port_info);
 581                 siu_dai_spbBselect(port_info);
 582
 583                 siu_dai_open(siu_stream);
 584
 585                 siu_dai_pcmdatapack(siu_stream);
 586
 587                 ret = siu_dai_spbstart(port_info);
 588                 if (ret < 0)
 589                         goto fail;
 590         }
 591
 592         port_info->play_cap |= self;
 593
 594 fail:
 595         return ret;
 596 }
 597
 598 /*
 599  * SIU can set bus format to I2S / PCM / SPDIF independently for playback and
 600  * capture, however, the current API sets the bus format globally for a DAI.
 601  */
 602 static int siu_dai_set_fmt(struct snd_soc_dai *dai,
 603                            unsigned int fmt)
 604 {
 605         struct siu_info *info = siu_i2s_dai.private_data;
 606         u32 __iomem *base = info->reg;
 607         u32 ifctl;
 608
 609         dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n",
 610                 __func__, fmt, info->port_id);
 611
 612         if (info->port_id < 0)
 613                 return -ENODEV;
 614
 615         /* Here select between I2S / PCM / SPDIF */
 616         switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 617         case SND_SOC_DAIFMT_I2S:
 618                 ifctl = siu_flags[info->port_id].playback.i2s |
 619                         siu_flags[info->port_id].capture.i2s;
 620                 break;
 621         case SND_SOC_DAIFMT_LEFT_J:
 622                 ifctl = siu_flags[info->port_id].playback.pcm |
 623                         siu_flags[info->port_id].capture.pcm;
 624                 break;
 625         /* SPDIF disabled - see comment at the top */
 626         default:
 627                 return -EINVAL;
 628         }
 629
 630         ifctl |= ~(siu_flags[info->port_id].playback.mask |
 631                    siu_flags[info->port_id].capture.mask) &
 632                 siu_read32(base + SIU_IFCTL);
 633         siu_write32(base + SIU_IFCTL, ifctl);
 634
 635         return 0;
 636 }
 637
 638 static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 639                               unsigned int freq, int dir)
 640 {
 641         struct clk *siu_clk, *parent_clk;
 642         char *siu_name, *parent_name;
 643         int ret;
 644
 645         if (dir != SND_SOC_CLOCK_IN)
 646                 return -EINVAL;
 647
 648         dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id);
 649
 650         switch (clk_id) {
 651         case SIU_CLKA_PLL:
 652                 siu_name = "siua_clk";
 653                 parent_name = "pll_clk";
 654                 break;
 655         case SIU_CLKA_EXT:
 656                 siu_name = "siua_clk";
 657                 parent_name = "siumcka_clk";
 658                 break;
 659         case SIU_CLKB_PLL:
 660                 siu_name = "siub_clk";
 661                 parent_name = "pll_clk";
 662                 break;
 663         case SIU_CLKB_EXT:
 664                 siu_name = "siub_clk";
 665                 parent_name = "siumckb_clk";
 666                 break;
 667         default:
 668                 return -EINVAL;
 669         }
 670
 671         siu_clk = clk_get(siu_i2s_dai.dev, siu_name);
 672         if (IS_ERR(siu_clk))
 673                 return PTR_ERR(siu_clk);
 674
 675         parent_clk = clk_get(siu_i2s_dai.dev, parent_name);
 676         if (!IS_ERR(parent_clk)) {
 677                 ret = clk_set_parent(siu_clk, parent_clk);
 678                 if (!ret)
 679                         clk_set_rate(siu_clk, freq);
 680                 clk_put(parent_clk);
 681         }
 682
 683         clk_put(siu_clk);
 684
 685         return 0;
 686 }
 687
 688 static struct snd_soc_dai_ops siu_dai_ops = {
 689         .startup        = siu_dai_startup,
 690         .shutdown       = siu_dai_shutdown,
 691         .prepare        = siu_dai_prepare,
 692         .set_sysclk     = siu_dai_set_sysclk,
 693         .set_fmt        = siu_dai_set_fmt,
 694 };
 695
 696 struct snd_soc_dai siu_i2s_dai = {
 697         .name = "sh-siu",
 698         .id = 0,
 699         .playback = {
 700                 .channels_min = 2,
 701                 .channels_max = 2,
 702                 .formats = SNDRV_PCM_FMTBIT_S16,
 703                 .rates = SNDRV_PCM_RATE_8000_48000,
 704         },
 705         .capture = {
 706                 .channels_min = 2,
 707                 .channels_max = 2,
 708                 .formats = SNDRV_PCM_FMTBIT_S16,
 709                 .rates = SNDRV_PCM_RATE_8000_48000,
 710          },
 711         .ops = &siu_dai_ops,
 712 };
 713 EXPORT_SYMBOL_GPL(siu_i2s_dai);
 714
 715 static int __devinit siu_probe(struct platform_device *pdev)
 716 {
 717         const struct firmware *fw_entry;
 718         struct resource *res, *region;
 719         struct siu_info *info;
 720         int ret;
 721
 722         info = kmalloc(sizeof(*info), GFP_KERNEL);
 723         if (!info)
 724                 return -ENOMEM;
 725
 726         ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev);
 727         if (ret)
 728                 goto ereqfw;
 729
 730         /*
 731          * Loaded firmware is "const" - read only, but we have to modify it in
 732          * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect()
 733          */
 734         memcpy(&info->fw, fw_entry->data, fw_entry->size);
 735
 736         release_firmware(fw_entry);
 737
 738         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 739         if (!res) {
 740                 ret = -ENODEV;
 741                 goto egetres;
 742         }
 743
 744         region = request_mem_region(res->start, resource_size(res),
 745                                     pdev->name);
 746         if (!region) {
 747                 dev_err(&pdev->dev, "SIU region already claimed\n");
 748                 ret = -EBUSY;
 749                 goto ereqmemreg;
 750         }
 751
 752         ret = -ENOMEM;
 753         info->pram = ioremap(res->start, PRAM_SIZE);
 754         if (!info->pram)
 755                 goto emappram;
 756         info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE);
 757         if (!info->xram)
 758                 goto emapxram;
 759         info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE);
 760         if (!info->yram)
 761                 goto emapyram;
 762         info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) -
 763                             REG_OFFSET);
 764         if (!info->reg)
 765                 goto emapreg;
 766
 767         siu_i2s_dai.dev = &pdev->dev;
 768         siu_i2s_dai.private_data = info;
 769
 770         ret = snd_soc_register_dais(&siu_i2s_dai, 1);
 771         if (ret < 0)
 772                 goto edaiinit;
 773
 774         ret = snd_soc_register_platform(&siu_platform);
 775         if (ret < 0)
 776                 goto esocregp;
 777
 778         pm_runtime_enable(&pdev->dev);
 779
 780         return ret;
 781
 782 esocregp:
 783         snd_soc_unregister_dais(&siu_i2s_dai, 1);
 784 edaiinit:
 785         iounmap(info->reg);
 786 emapreg:
 787         iounmap(info->yram);
 788 emapyram:
 789         iounmap(info->xram);
 790 emapxram:
 791         iounmap(info->pram);
 792 emappram:
 793         release_mem_region(res->start, resource_size(res));
 794 ereqmemreg:
 795 egetres:
 796 ereqfw:
 797         kfree(info);
 798
 799         return ret;
 800 }
 801
 802 static int __devexit siu_remove(struct platform_device *pdev)
 803 {
 804         struct siu_info *info = siu_i2s_dai.private_data;
 805         struct resource *res;
 806
 807         pm_runtime_disable(&pdev->dev);
 808
 809         snd_soc_unregister_platform(&siu_platform);
 810         snd_soc_unregister_dais(&siu_i2s_dai, 1);
 811
 812         iounmap(info->reg);
 813         iounmap(info->yram);
 814         iounmap(info->xram);
 815         iounmap(info->pram);
 816         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 817         if (res)
 818                 release_mem_region(res->start, resource_size(res));
 819         kfree(info);
 820
 821         return 0;
 822 }
 823
 824 static struct platform_driver siu_driver = {
 825         .driver         = {
 826                 .name   = "sh_siu",
 827         },
 828         .probe          = siu_probe,
 829         .remove         = __devexit_p(siu_remove),
 830 };
 831
 832 static int __init siu_init(void)
 833 {
 834         return platform_driver_register(&siu_driver);
 835 }
 836
 837 static void __exit siu_exit(void)
 838 {
 839         platform_driver_unregister(&siu_driver);
 840 }
 841
 842 module_init(siu_init)
 843 module_exit(siu_exit)
 844
 845 MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>");
 846 MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver");
 847 MODULE_LICENSE("GPL");