sound/soc/ux500/ux500_msp_dai.c

   1 /*
   2  * Copyright (C) ST-Ericsson SA 2012
   3  *
   4  * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
   5  *         Roger Nilsson <roger.xr.nilsson@stericsson.com>
   6  *         for ST-Ericsson.
   7  *
   8  * License terms:
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as published
  12  * by the Free Software Foundation.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/slab.h>
  17 #include <linux/bitops.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/clk.h>
  20 #include <linux/of.h>
  21 #include <linux/regulator/consumer.h>
  22 #include <linux/mfd/dbx500-prcmu.h>
  23 #include <linux/platform_data/asoc-ux500-msp.h>
  24
  25 #include <sound/soc.h>
  26 #include <sound/soc-dai.h>
  27 #include <sound/dmaengine_pcm.h>
  28
  29 #include "ux500_msp_i2s.h"
  30 #include "ux500_msp_dai.h"
  31 #include "ux500_pcm.h"
  32
  33 static int setup_pcm_multichan(struct snd_soc_dai *dai,
  34                         struct ux500_msp_config *msp_config)
  35 {
  36         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
  37         struct msp_multichannel_config *multi =
  38                                         &msp_config->multichannel_config;
  39
  40         if (drvdata->slots > 1) {
  41                 msp_config->multichannel_configured = 1;
  42
  43                 multi->tx_multichannel_enable = true;
  44                 multi->rx_multichannel_enable = true;
  45                 multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED;
  46
  47                 multi->tx_channel_0_enable = drvdata->tx_mask;
  48                 multi->tx_channel_1_enable = 0;
  49                 multi->tx_channel_2_enable = 0;
  50                 multi->tx_channel_3_enable = 0;
  51
  52                 multi->rx_channel_0_enable = drvdata->rx_mask;
  53                 multi->rx_channel_1_enable = 0;
  54                 multi->rx_channel_2_enable = 0;
  55                 multi->rx_channel_3_enable = 0;
  56
  57                 dev_dbg(dai->dev,
  58                         "%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n",
  59                         __func__, drvdata->slots, multi->tx_channel_0_enable,
  60                         multi->rx_channel_0_enable);
  61         }
  62
  63         return 0;
  64 }
  65
  66 static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate,
  67                         struct msp_protdesc *prot_desc)
  68 {
  69         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
  70
  71         switch (drvdata->slots) {
  72         case 1:
  73                 switch (rate) {
  74                 case 8000:
  75                         prot_desc->frame_period =
  76                                 FRAME_PER_SINGLE_SLOT_8_KHZ;
  77                         break;
  78
  79                 case 16000:
  80                         prot_desc->frame_period =
  81                                 FRAME_PER_SINGLE_SLOT_16_KHZ;
  82                         break;
  83
  84                 case 44100:
  85                         prot_desc->frame_period =
  86                                 FRAME_PER_SINGLE_SLOT_44_1_KHZ;
  87                         break;
  88
  89                 case 48000:
  90                         prot_desc->frame_period =
  91                                 FRAME_PER_SINGLE_SLOT_48_KHZ;
  92                         break;
  93
  94                 default:
  95                         dev_err(dai->dev,
  96                                 "%s: Error: Unsupported sample-rate (freq = %d)!\n",
  97                                 __func__, rate);
  98                         return -EINVAL;
  99                 }
 100                 break;
 101
 102         case 2:
 103                 prot_desc->frame_period = FRAME_PER_2_SLOTS;
 104                 break;
 105
 106         case 8:
 107                 prot_desc->frame_period = FRAME_PER_8_SLOTS;
 108                 break;
 109
 110         case 16:
 111                 prot_desc->frame_period = FRAME_PER_16_SLOTS;
 112                 break;
 113         default:
 114                 dev_err(dai->dev,
 115                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
 116                         __func__, drvdata->slots);
 117                 return -EINVAL;
 118         }
 119
 120         prot_desc->clocks_per_frame =
 121                         prot_desc->frame_period+1;
 122
 123         dev_dbg(dai->dev, "%s: Clocks per frame: %u\n",
 124                 __func__,
 125                 prot_desc->clocks_per_frame);
 126
 127         return 0;
 128 }
 129
 130 static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate,
 131                         struct msp_protdesc *prot_desc)
 132 {
 133         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 134
 135         u32 frame_length = MSP_FRAME_LEN_1;
 136
 137         prot_desc->frame_width = 0;
 138
 139         switch (drvdata->slots) {
 140         case 1:
 141                 frame_length = MSP_FRAME_LEN_1;
 142                 break;
 143
 144         case 2:
 145                 frame_length = MSP_FRAME_LEN_2;
 146                 break;
 147
 148         case 8:
 149                 frame_length = MSP_FRAME_LEN_8;
 150                 break;
 151
 152         case 16:
 153                 frame_length = MSP_FRAME_LEN_16;
 154                 break;
 155         default:
 156                 dev_err(dai->dev,
 157                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
 158                         __func__, drvdata->slots);
 159                 return -EINVAL;
 160         }
 161
 162         prot_desc->tx_frame_len_1 = frame_length;
 163         prot_desc->rx_frame_len_1 = frame_length;
 164         prot_desc->tx_frame_len_2 = frame_length;
 165         prot_desc->rx_frame_len_2 = frame_length;
 166
 167         prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
 168         prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
 169         prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
 170         prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
 171
 172         return setup_frameper(dai, rate, prot_desc);
 173 }
 174
 175 static int setup_clocking(struct snd_soc_dai *dai,
 176                         unsigned int fmt,
 177                         struct ux500_msp_config *msp_config)
 178 {
 179         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 180         case SND_SOC_DAIFMT_NB_NF:
 181                 break;
 182
 183         case SND_SOC_DAIFMT_NB_IF:
 184                 msp_config->tx_fsync_pol ^= 1 << TFSPOL_SHIFT;
 185                 msp_config->rx_fsync_pol ^= 1 << RFSPOL_SHIFT;
 186
 187                 break;
 188
 189         default:
 190                 dev_err(dai->dev,
 191                         "%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
 192                         __func__, fmt);
 193
 194                 return -EINVAL;
 195         }
 196
 197         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 198         case SND_SOC_DAIFMT_CBM_CFM:
 199                 dev_dbg(dai->dev, "%s: Codec is master.\n", __func__);
 200
 201                 msp_config->iodelay = 0x20;
 202                 msp_config->rx_fsync_sel = 0;
 203                 msp_config->tx_fsync_sel = 1 << TFSSEL_SHIFT;
 204                 msp_config->tx_clk_sel = 0;
 205                 msp_config->rx_clk_sel = 0;
 206                 msp_config->srg_clk_sel = 0x2 << SCKSEL_SHIFT;
 207
 208                 break;
 209
 210         case SND_SOC_DAIFMT_CBS_CFS:
 211                 dev_dbg(dai->dev, "%s: Codec is slave.\n", __func__);
 212
 213                 msp_config->tx_clk_sel = TX_CLK_SEL_SRG;
 214                 msp_config->tx_fsync_sel = TX_SYNC_SRG_PROG;
 215                 msp_config->rx_clk_sel = RX_CLK_SEL_SRG;
 216                 msp_config->rx_fsync_sel = RX_SYNC_SRG;
 217                 msp_config->srg_clk_sel = 1 << SCKSEL_SHIFT;
 218
 219                 break;
 220
 221         default:
 222                 dev_err(dai->dev, "%s: Error: Unsupported master (fmt = 0x%x)!\n",
 223                         __func__, fmt);
 224
 225                 return -EINVAL;
 226         }
 227
 228         return 0;
 229 }
 230
 231 static int setup_pcm_protdesc(struct snd_soc_dai *dai,
 232                                 unsigned int fmt,
 233                                 struct msp_protdesc *prot_desc)
 234 {
 235         prot_desc->rx_phase_mode = MSP_SINGLE_PHASE;
 236         prot_desc->tx_phase_mode = MSP_SINGLE_PHASE;
 237         prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
 238         prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
 239         prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
 240         prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
 241         prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_HI);
 242         prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_HI << RFSPOL_SHIFT;
 243
 244         if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A) {
 245                 dev_dbg(dai->dev, "%s: DSP_A.\n", __func__);
 246                 prot_desc->rx_clk_pol = MSP_RISING_EDGE;
 247                 prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
 248
 249                 prot_desc->rx_data_delay = MSP_DELAY_1;
 250                 prot_desc->tx_data_delay = MSP_DELAY_1;
 251         } else {
 252                 dev_dbg(dai->dev, "%s: DSP_B.\n", __func__);
 253                 prot_desc->rx_clk_pol = MSP_FALLING_EDGE;
 254                 prot_desc->tx_clk_pol = MSP_RISING_EDGE;
 255
 256                 prot_desc->rx_data_delay = MSP_DELAY_0;
 257                 prot_desc->tx_data_delay = MSP_DELAY_0;
 258         }
 259
 260         prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
 261         prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
 262         prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
 263         prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
 264         prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
 265
 266         return 0;
 267 }
 268
 269 static int setup_i2s_protdesc(struct msp_protdesc *prot_desc)
 270 {
 271         prot_desc->rx_phase_mode = MSP_DUAL_PHASE;
 272         prot_desc->tx_phase_mode = MSP_DUAL_PHASE;
 273         prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
 274         prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
 275         prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
 276         prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
 277         prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_LO);
 278         prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_LO << RFSPOL_SHIFT;
 279
 280         prot_desc->rx_frame_len_1 = MSP_FRAME_LEN_1;
 281         prot_desc->rx_frame_len_2 = MSP_FRAME_LEN_1;
 282         prot_desc->tx_frame_len_1 = MSP_FRAME_LEN_1;
 283         prot_desc->tx_frame_len_2 = MSP_FRAME_LEN_1;
 284         prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
 285         prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
 286         prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
 287         prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
 288
 289         prot_desc->rx_clk_pol = MSP_RISING_EDGE;
 290         prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
 291
 292         prot_desc->rx_data_delay = MSP_DELAY_0;
 293         prot_desc->tx_data_delay = MSP_DELAY_0;
 294
 295         prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
 296         prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
 297         prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
 298         prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
 299         prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
 300
 301         return 0;
 302 }
 303
 304 static int setup_msp_config(struct snd_pcm_substream *substream,
 305                         struct snd_soc_dai *dai,
 306                         struct ux500_msp_config *msp_config)
 307 {
 308         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 309         struct msp_protdesc *prot_desc = &msp_config->protdesc;
 310         struct snd_pcm_runtime *runtime = substream->runtime;
 311         unsigned int fmt = drvdata->fmt;
 312         int ret;
 313
 314         memset(msp_config, 0, sizeof(*msp_config));
 315
 316         msp_config->f_inputclk = drvdata->master_clk;
 317
 318         msp_config->tx_fifo_config = TX_FIFO_ENABLE;
 319         msp_config->rx_fifo_config = RX_FIFO_ENABLE;
 320         msp_config->def_elem_len = 1;
 321         msp_config->direction = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 322                                 MSP_DIR_TX : MSP_DIR_RX;
 323         msp_config->data_size = MSP_DATA_BITS_32;
 324         msp_config->frame_freq = runtime->rate;
 325
 326         dev_dbg(dai->dev, "%s: f_inputclk = %u, frame_freq = %u.\n",
 327                __func__, msp_config->f_inputclk, msp_config->frame_freq);
 328         /* To avoid division by zero */
 329         prot_desc->clocks_per_frame = 1;
 330
 331         dev_dbg(dai->dev, "%s: rate: %u, channels: %d.\n", __func__,
 332                 runtime->rate, runtime->channels);
 333         switch (fmt &
 334                 (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_MASTER_MASK)) {
 335         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
 336                 dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
 337
 338                 msp_config->default_protdesc = 1;
 339                 msp_config->protocol = MSP_I2S_PROTOCOL;
 340                 break;
 341
 342         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
 343                 dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
 344
 345                 msp_config->data_size = MSP_DATA_BITS_16;
 346                 msp_config->protocol = MSP_I2S_PROTOCOL;
 347
 348                 ret = setup_i2s_protdesc(prot_desc);
 349                 if (ret < 0)
 350                         return ret;
 351
 352                 break;
 353
 354         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
 355         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
 356         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
 357         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
 358                 dev_dbg(dai->dev, "%s: PCM format.\n", __func__);
 359
 360                 msp_config->data_size = MSP_DATA_BITS_16;
 361                 msp_config->protocol = MSP_PCM_PROTOCOL;
 362
 363                 ret = setup_pcm_protdesc(dai, fmt, prot_desc);
 364                 if (ret < 0)
 365                         return ret;
 366
 367                 ret = setup_pcm_multichan(dai, msp_config);
 368                 if (ret < 0)
 369                         return ret;
 370
 371                 ret = setup_pcm_framing(dai, runtime->rate, prot_desc);
 372                 if (ret < 0)
 373                         return ret;
 374
 375                 break;
 376
 377         default:
 378                 dev_err(dai->dev, "%s: Error: Unsupported format (%d)!\n",
 379                         __func__, fmt);
 380                 return -EINVAL;
 381         }
 382
 383         return setup_clocking(dai, fmt, msp_config);
 384 }
 385
 386 static int ux500_msp_dai_startup(struct snd_pcm_substream *substream,
 387                                 struct snd_soc_dai *dai)
 388 {
 389         int ret = 0;
 390         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 391
 392         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
 393                 snd_pcm_stream_str(substream));
 394
 395         /* Enable regulator */
 396         ret = regulator_enable(drvdata->reg_vape);
 397         if (ret != 0) {
 398                 dev_err(drvdata->msp->dev,
 399                         "%s: Failed to enable regulator!\n", __func__);
 400                 return ret;
 401         }
 402
 403         /* Prepare and enable clocks */
 404         dev_dbg(dai->dev, "%s: Enabling MSP-clocks.\n", __func__);
 405         ret = clk_prepare_enable(drvdata->pclk);
 406         if (ret) {
 407                 dev_err(drvdata->msp->dev,
 408                         "%s: Failed to prepare/enable pclk!\n", __func__);
 409                 goto err_pclk;
 410         }
 411
 412         ret = clk_prepare_enable(drvdata->clk);
 413         if (ret) {
 414                 dev_err(drvdata->msp->dev,
 415                         "%s: Failed to prepare/enable clk!\n", __func__);
 416                 goto err_clk;
 417         }
 418
 419         return ret;
 420 err_clk:
 421         clk_disable_unprepare(drvdata->pclk);
 422 err_pclk:
 423         regulator_disable(drvdata->reg_vape);
 424         return ret;
 425 }
 426
 427 static void ux500_msp_dai_shutdown(struct snd_pcm_substream *substream,
 428                                 struct snd_soc_dai *dai)
 429 {
 430         int ret;
 431         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 432         bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
 433
 434         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
 435                 snd_pcm_stream_str(substream));
 436
 437         if (drvdata->vape_opp_constraint == 1) {
 438                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 439                                         "ux500_msp_i2s", 50);
 440                 drvdata->vape_opp_constraint = 0;
 441         }
 442
 443         if (ux500_msp_i2s_close(drvdata->msp,
 444                                 is_playback ? MSP_DIR_TX : MSP_DIR_RX)) {
 445                 dev_err(dai->dev,
 446                         "%s: Error: MSP %d (%s): Unable to close i2s.\n",
 447                         __func__, dai->id, snd_pcm_stream_str(substream));
 448         }
 449
 450         /* Disable and unprepare clocks */
 451         clk_disable_unprepare(drvdata->clk);
 452         clk_disable_unprepare(drvdata->pclk);
 453
 454         /* Disable regulator */
 455         ret = regulator_disable(drvdata->reg_vape);
 456         if (ret < 0)
 457                 dev_err(dai->dev,
 458                         "%s: ERROR: Failed to disable regulator (%d)!\n",
 459                         __func__, ret);
 460 }
 461
 462 static int ux500_msp_dai_prepare(struct snd_pcm_substream *substream,
 463                                 struct snd_soc_dai *dai)
 464 {
 465         int ret = 0;
 466         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 467         struct snd_pcm_runtime *runtime = substream->runtime;
 468         struct ux500_msp_config msp_config;
 469
 470         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (rate = %d).\n", __func__,
 471                 dai->id, snd_pcm_stream_str(substream), runtime->rate);
 472
 473         setup_msp_config(substream, dai, &msp_config);
 474
 475         ret = ux500_msp_i2s_open(drvdata->msp, &msp_config);
 476         if (ret < 0) {
 477                 dev_err(dai->dev, "%s: Error: msp_setup failed (ret = %d)!\n",
 478                         __func__, ret);
 479                 return ret;
 480         }
 481
 482         /* Set OPP-level */
 483         if ((drvdata->fmt & SND_SOC_DAIFMT_MASTER_MASK) &&
 484                 (drvdata->msp->f_bitclk > 19200000)) {
 485                 /* If the bit-clock is higher than 19.2MHz, Vape should be
 486                  * run in 100% OPP. Only when bit-clock is used (MSP master)
 487                  */
 488                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 489                                         "ux500-msp-i2s", 100);
 490                 drvdata->vape_opp_constraint = 1;
 491         } else {
 492                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 493                                         "ux500-msp-i2s", 50);
 494                 drvdata->vape_opp_constraint = 0;
 495         }
 496
 497         return ret;
 498 }
 499
 500 static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream,
 501                                 struct snd_pcm_hw_params *params,
 502                                 struct snd_soc_dai *dai)
 503 {
 504         unsigned int mask, slots_active;
 505         struct snd_pcm_runtime *runtime = substream->runtime;
 506         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 507
 508         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n",
 509                         __func__, dai->id, snd_pcm_stream_str(substream));
 510
 511         switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 512         case SND_SOC_DAIFMT_I2S:
 513                 snd_pcm_hw_constraint_minmax(runtime,
 514                                 SNDRV_PCM_HW_PARAM_CHANNELS,
 515                                 1, 2);
 516                 break;
 517
 518         case SND_SOC_DAIFMT_DSP_B:
 519         case SND_SOC_DAIFMT_DSP_A:
 520                 mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 521                         drvdata->tx_mask :
 522                         drvdata->rx_mask;
 523
 524                 slots_active = hweight32(mask);
 525                 dev_dbg(dai->dev, "TDM-slots active: %d", slots_active);
 526
 527                 snd_pcm_hw_constraint_single(runtime,
 528                                 SNDRV_PCM_HW_PARAM_CHANNELS,
 529                                 slots_active);
 530                 break;
 531
 532         default:
 533                 dev_err(dai->dev,
 534                         "%s: Error: Unsupported protocol (fmt = 0x%x)!\n",
 535                         __func__, drvdata->fmt);
 536                 return -EINVAL;
 537         }
 538
 539         return 0;
 540 }
 541
 542 static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai,
 543                                 unsigned int fmt)
 544 {
 545         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 546
 547         dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id);
 548
 549         switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
 550                 SND_SOC_DAIFMT_MASTER_MASK)) {
 551         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
 552         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
 553         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
 554         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
 555         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
 556         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
 557                 break;
 558
 559         default:
 560                 dev_err(dai->dev,
 561                         "%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n",
 562                         __func__, drvdata->fmt);
 563                 return -EINVAL;
 564         }
 565
 566         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 567         case SND_SOC_DAIFMT_NB_NF:
 568         case SND_SOC_DAIFMT_NB_IF:
 569         case SND_SOC_DAIFMT_IB_IF:
 570                 break;
 571
 572         default:
 573                 dev_err(dai->dev,
 574                         "%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
 575                         __func__, drvdata->fmt);
 576                 return -EINVAL;
 577         }
 578
 579         drvdata->fmt = fmt;
 580         return 0;
 581 }
 582
 583 static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai,
 584                                 unsigned int tx_mask,
 585                                 unsigned int rx_mask,
 586                                 int slots, int slot_width)
 587 {
 588         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 589         unsigned int cap;
 590
 591         switch (slots) {
 592         case 1:
 593                 cap = 0x01;
 594                 break;
 595         case 2:
 596                 cap = 0x03;
 597                 break;
 598         case 8:
 599                 cap = 0xFF;
 600                 break;
 601         case 16:
 602                 cap = 0xFFFF;
 603                 break;
 604         default:
 605                 dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n",
 606                         __func__, slots);
 607                 return -EINVAL;
 608         }
 609         drvdata->slots = slots;
 610
 611         if (!(slot_width == 16)) {
 612                 dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n",
 613                         __func__, slot_width);
 614                 return -EINVAL;
 615         }
 616         drvdata->slot_width = slot_width;
 617
 618         drvdata->tx_mask = tx_mask & cap;
 619         drvdata->rx_mask = rx_mask & cap;
 620
 621         return 0;
 622 }
 623
 624 static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai,
 625                                         int clk_id, unsigned int freq, int dir)
 626 {
 627         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 628
 629         dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n",
 630                 __func__, dai->id, clk_id, freq);
 631
 632         switch (clk_id) {
 633         case UX500_MSP_MASTER_CLOCK:
 634                 drvdata->master_clk = freq;
 635                 break;
 636
 637         default:
 638                 dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n",
 639                         __func__, dai->id, clk_id);
 640                 return -EINVAL;
 641         }
 642
 643         return 0;
 644 }
 645
 646 static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream,
 647                                 int cmd, struct snd_soc_dai *dai)
 648 {
 649         int ret = 0;
 650         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 651
 652         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n",
 653                 __func__, dai->id, snd_pcm_stream_str(substream),
 654                 (int)drvdata->msp->id, cmd);
 655
 656         ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream);
 657
 658         return ret;
 659 }
 660
 661 static int ux500_msp_dai_of_probe(struct snd_soc_dai *dai)
 662 {
 663         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 664         struct snd_dmaengine_dai_dma_data *playback_dma_data;
 665         struct snd_dmaengine_dai_dma_data *capture_dma_data;
 666
 667         playback_dma_data = devm_kzalloc(dai->dev,
 668                                          sizeof(*playback_dma_data),
 669                                          GFP_KERNEL);
 670         if (!playback_dma_data)
 671                 return -ENOMEM;
 672
 673         capture_dma_data = devm_kzalloc(dai->dev,
 674                                         sizeof(*capture_dma_data),
 675                                         GFP_KERNEL);
 676         if (!capture_dma_data)
 677                 return -ENOMEM;
 678
 679         playback_dma_data->addr = drvdata->msp->playback_dma_data.tx_rx_addr;
 680         capture_dma_data->addr = drvdata->msp->capture_dma_data.tx_rx_addr;
 681
 682         playback_dma_data->maxburst = 4;
 683         capture_dma_data->maxburst = 4;
 684
 685         snd_soc_dai_init_dma_data(dai, playback_dma_data, capture_dma_data);
 686
 687         return 0;
 688 }
 689
 690 static int ux500_msp_dai_probe(struct snd_soc_dai *dai)
 691 {
 692         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 693         struct msp_i2s_platform_data *pdata = dai->dev->platform_data;
 694         int ret;
 695
 696         if (!pdata) {
 697                 ret = ux500_msp_dai_of_probe(dai);
 698                 return ret;
 699         }
 700
 701         drvdata->msp->playback_dma_data.data_size = drvdata->slot_width;
 702         drvdata->msp->capture_dma_data.data_size = drvdata->slot_width;
 703
 704         snd_soc_dai_init_dma_data(dai,
 705                                   &drvdata->msp->playback_dma_data,
 706                                   &drvdata->msp->capture_dma_data);
 707         return 0;
 708 }
 709
 710 static const struct snd_soc_dai_ops ux500_msp_dai_ops[] = {
 711         {
 712                 .set_sysclk = ux500_msp_dai_set_dai_sysclk,
 713                 .set_fmt = ux500_msp_dai_set_dai_fmt,
 714                 .set_tdm_slot = ux500_msp_dai_set_tdm_slot,
 715                 .startup = ux500_msp_dai_startup,
 716                 .shutdown = ux500_msp_dai_shutdown,
 717                 .prepare = ux500_msp_dai_prepare,
 718                 .trigger = ux500_msp_dai_trigger,
 719                 .hw_params = ux500_msp_dai_hw_params,
 720         }
 721 };
 722
 723 static struct snd_soc_dai_driver ux500_msp_dai_drv = {
 724         .probe                 = ux500_msp_dai_probe,
 725         .suspend               = NULL,
 726         .resume                = NULL,
 727         .playback.channels_min = UX500_MSP_MIN_CHANNELS,
 728         .playback.channels_max = UX500_MSP_MAX_CHANNELS,
 729         .playback.rates        = UX500_I2S_RATES,
 730         .playback.formats      = UX500_I2S_FORMATS,
 731         .capture.channels_min  = UX500_MSP_MIN_CHANNELS,
 732         .capture.channels_max  = UX500_MSP_MAX_CHANNELS,
 733         .capture.rates         = UX500_I2S_RATES,
 734         .capture.formats       = UX500_I2S_FORMATS,
 735         .ops                   = ux500_msp_dai_ops,
 736 };
 737
 738 static const struct snd_soc_component_driver ux500_msp_component = {
 739         .name           = "ux500-msp",
 740 };
 741
 742
 743 static int ux500_msp_drv_probe(struct platform_device *pdev)
 744 {
 745         struct ux500_msp_i2s_drvdata *drvdata;
 746         struct msp_i2s_platform_data *pdata = pdev->dev.platform_data;
 747         struct device_node *np = pdev->dev.of_node;
 748         int ret = 0;
 749
 750         if (!pdata && !np) {
 751                 dev_err(&pdev->dev, "No platform data or Device Tree found\n");
 752                 return -ENODEV;
 753         }
 754
 755         drvdata = devm_kzalloc(&pdev->dev,
 756                                 sizeof(struct ux500_msp_i2s_drvdata),
 757                                 GFP_KERNEL);
 758         if (!drvdata)
 759                 return -ENOMEM;
 760
 761         drvdata->fmt = 0;
 762         drvdata->slots = 1;
 763         drvdata->tx_mask = 0x01;
 764         drvdata->rx_mask = 0x01;
 765         drvdata->slot_width = 16;
 766         drvdata->master_clk = MSP_INPUT_FREQ_APB;
 767
 768         drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape");
 769         if (IS_ERR(drvdata->reg_vape)) {
 770                 ret = (int)PTR_ERR(drvdata->reg_vape);
 771                 dev_err(&pdev->dev,
 772                         "%s: ERROR: Failed to get Vape supply (%d)!\n",
 773                         __func__, ret);
 774                 return ret;
 775         }
 776         prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);
 777
 778         drvdata->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
 779         if (IS_ERR(drvdata->pclk)) {
 780                 ret = (int)PTR_ERR(drvdata->pclk);
 781                 dev_err(&pdev->dev,
 782                         "%s: ERROR: devm_clk_get of pclk failed (%d)!\n",
 783                         __func__, ret);
 784                 return ret;
 785         }
 786
 787         drvdata->clk = devm_clk_get(&pdev->dev, NULL);
 788         if (IS_ERR(drvdata->clk)) {
 789                 ret = (int)PTR_ERR(drvdata->clk);
 790                 dev_err(&pdev->dev,
 791                         "%s: ERROR: devm_clk_get failed (%d)!\n",
 792                         __func__, ret);
 793                 return ret;
 794         }
 795
 796         ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
 797                                 pdev->dev.platform_data);
 798         if (!drvdata->msp) {
 799                 dev_err(&pdev->dev,
 800                         "%s: ERROR: Failed to init MSP-struct (%d)!",
 801                         __func__, ret);
 802                 return ret;
 803         }
 804         dev_set_drvdata(&pdev->dev, drvdata);
 805
 806         ret = snd_soc_register_component(&pdev->dev, &ux500_msp_component,
 807                                          &ux500_msp_dai_drv, 1);
 808         if (ret < 0) {
 809                 dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
 810                         __func__, drvdata->msp->id);
 811                 return ret;
 812         }
 813
 814         ret = ux500_pcm_register_platform(pdev);
 815         if (ret < 0) {
 816                 dev_err(&pdev->dev,
 817                         "Error: %s: Failed to register PCM platform device!\n",
 818                         __func__);
 819                 goto err_reg_plat;
 820         }
 821
 822         return 0;
 823
 824 err_reg_plat:
 825         snd_soc_unregister_component(&pdev->dev);
 826         return ret;
 827 }
 828
 829 static int ux500_msp_drv_remove(struct platform_device *pdev)
 830 {
 831         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
 832
 833         ux500_pcm_unregister_platform(pdev);
 834
 835         snd_soc_unregister_component(&pdev->dev);
 836
 837         prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
 838
 839         ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
 840
 841         return 0;
 842 }
 843
 844 static const struct of_device_id ux500_msp_i2s_match[] = {
 845         { .compatible = "stericsson,ux500-msp-i2s", },
 846         {},
 847 };
 848 MODULE_DEVICE_TABLE(of, ux500_msp_i2s_match);
 849
 850 static struct platform_driver msp_i2s_driver = {
 851         .driver = {
 852                 .name = "ux500-msp-i2s",
 853                 .of_match_table = ux500_msp_i2s_match,
 854         },
 855         .probe = ux500_msp_drv_probe,
 856         .remove = ux500_msp_drv_remove,
 857 };
 858 module_platform_driver(msp_i2s_driver);
 859
 860 MODULE_LICENSE("GPL v2");