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/regulator/consumer.h>
  21 #include <linux/mfd/dbx500-prcmu.h>
  22 #include <linux/platform_data/asoc-ux500-msp.h>
  23
  24 #include <sound/soc.h>
  25 #include <sound/soc-dai.h>
  26
  27 #include "ux500_msp_i2s.h"
  28 #include "ux500_msp_dai.h"
  29 #include "ux500_pcm.h"
  30
  31 static int setup_pcm_multichan(struct snd_soc_dai *dai,
  32                         struct ux500_msp_config *msp_config)
  33 {
  34         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
  35         struct msp_multichannel_config *multi =
  36                                         &msp_config->multichannel_config;
  37
  38         if (drvdata->slots > 1) {
  39                 msp_config->multichannel_configured = 1;
  40
  41                 multi->tx_multichannel_enable = true;
  42                 multi->rx_multichannel_enable = true;
  43                 multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED;
  44
  45                 multi->tx_channel_0_enable = drvdata->tx_mask;
  46                 multi->tx_channel_1_enable = 0;
  47                 multi->tx_channel_2_enable = 0;
  48                 multi->tx_channel_3_enable = 0;
  49
  50                 multi->rx_channel_0_enable = drvdata->rx_mask;
  51                 multi->rx_channel_1_enable = 0;
  52                 multi->rx_channel_2_enable = 0;
  53                 multi->rx_channel_3_enable = 0;
  54
  55                 dev_dbg(dai->dev,
  56                         "%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n",
  57                         __func__, drvdata->slots, multi->tx_channel_0_enable,
  58                         multi->rx_channel_0_enable);
  59         }
  60
  61         return 0;
  62 }
  63
  64 static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate,
  65                         struct msp_protdesc *prot_desc)
  66 {
  67         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
  68
  69         switch (drvdata->slots) {
  70         case 1:
  71                 switch (rate) {
  72                 case 8000:
  73                         prot_desc->frame_period =
  74                                 FRAME_PER_SINGLE_SLOT_8_KHZ;
  75                         break;
  76
  77                 case 16000:
  78                         prot_desc->frame_period =
  79                                 FRAME_PER_SINGLE_SLOT_16_KHZ;
  80                         break;
  81
  82                 case 44100:
  83                         prot_desc->frame_period =
  84                                 FRAME_PER_SINGLE_SLOT_44_1_KHZ;
  85                         break;
  86
  87                 case 48000:
  88                         prot_desc->frame_period =
  89                                 FRAME_PER_SINGLE_SLOT_48_KHZ;
  90                         break;
  91
  92                 default:
  93                         dev_err(dai->dev,
  94                                 "%s: Error: Unsupported sample-rate (freq = %d)!\n",
  95                                 __func__, rate);
  96                         return -EINVAL;
  97                 }
  98                 break;
  99
 100         case 2:
 101                 prot_desc->frame_period = FRAME_PER_2_SLOTS;
 102                 break;
 103
 104         case 8:
 105                 prot_desc->frame_period = FRAME_PER_8_SLOTS;
 106                 break;
 107
 108         case 16:
 109                 prot_desc->frame_period = FRAME_PER_16_SLOTS;
 110                 break;
 111         default:
 112                 dev_err(dai->dev,
 113                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
 114                         __func__, drvdata->slots);
 115                 return -EINVAL;
 116         }
 117
 118         prot_desc->clocks_per_frame =
 119                         prot_desc->frame_period+1;
 120
 121         dev_dbg(dai->dev, "%s: Clocks per frame: %u\n",
 122                 __func__,
 123                 prot_desc->clocks_per_frame);
 124
 125         return 0;
 126 }
 127
 128 static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate,
 129                         struct msp_protdesc *prot_desc)
 130 {
 131         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 132
 133         u32 frame_length = MSP_FRAME_LEN_1;
 134         prot_desc->frame_width = 0;
 135
 136         switch (drvdata->slots) {
 137         case 1:
 138                 frame_length = MSP_FRAME_LEN_1;
 139                 break;
 140
 141         case 2:
 142                 frame_length = MSP_FRAME_LEN_2;
 143                 break;
 144
 145         case 8:
 146                 frame_length = MSP_FRAME_LEN_8;
 147                 break;
 148
 149         case 16:
 150                 frame_length = MSP_FRAME_LEN_16;
 151                 break;
 152         default:
 153                 dev_err(dai->dev,
 154                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
 155                         __func__, drvdata->slots);
 156                 return -EINVAL;
 157         }
 158
 159         prot_desc->tx_frame_len_1 = frame_length;
 160         prot_desc->rx_frame_len_1 = frame_length;
 161         prot_desc->tx_frame_len_2 = frame_length;
 162         prot_desc->rx_frame_len_2 = frame_length;
 163
 164         prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
 165         prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
 166         prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
 167         prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
 168
 169         return setup_frameper(dai, rate, prot_desc);
 170 }
 171
 172 static int setup_clocking(struct snd_soc_dai *dai,
 173                         unsigned int fmt,
 174                         struct ux500_msp_config *msp_config)
 175 {
 176         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 177         case SND_SOC_DAIFMT_NB_NF:
 178                 break;
 179
 180         case SND_SOC_DAIFMT_NB_IF:
 181                 msp_config->tx_fsync_pol ^= 1 << TFSPOL_SHIFT;
 182                 msp_config->rx_fsync_pol ^= 1 << RFSPOL_SHIFT;
 183
 184                 break;
 185
 186         default:
 187                 dev_err(dai->dev,
 188                         "%s: Error: Unsopported inversion (fmt = 0x%x)!\n",
 189                         __func__, fmt);
 190
 191                 return -EINVAL;
 192         }
 193
 194         switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 195         case SND_SOC_DAIFMT_CBM_CFM:
 196                 dev_dbg(dai->dev, "%s: Codec is master.\n", __func__);
 197
 198                 msp_config->iodelay = 0x20;
 199                 msp_config->rx_fsync_sel = 0;
 200                 msp_config->tx_fsync_sel = 1 << TFSSEL_SHIFT;
 201                 msp_config->tx_clk_sel = 0;
 202                 msp_config->rx_clk_sel = 0;
 203                 msp_config->srg_clk_sel = 0x2 << SCKSEL_SHIFT;
 204
 205                 break;
 206
 207         case SND_SOC_DAIFMT_CBS_CFS:
 208                 dev_dbg(dai->dev, "%s: Codec is slave.\n", __func__);
 209
 210                 msp_config->tx_clk_sel = TX_CLK_SEL_SRG;
 211                 msp_config->tx_fsync_sel = TX_SYNC_SRG_PROG;
 212                 msp_config->rx_clk_sel = RX_CLK_SEL_SRG;
 213                 msp_config->rx_fsync_sel = RX_SYNC_SRG;
 214                 msp_config->srg_clk_sel = 1 << SCKSEL_SHIFT;
 215
 216                 break;
 217
 218         default:
 219                 dev_err(dai->dev, "%s: Error: Unsopported master (fmt = 0x%x)!\n",
 220                         __func__, fmt);
 221
 222                 return -EINVAL;
 223         }
 224
 225         return 0;
 226 }
 227
 228 static int setup_pcm_protdesc(struct snd_soc_dai *dai,
 229                                 unsigned int fmt,
 230                                 struct msp_protdesc *prot_desc)
 231 {
 232         prot_desc->rx_phase_mode = MSP_SINGLE_PHASE;
 233         prot_desc->tx_phase_mode = MSP_SINGLE_PHASE;
 234         prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
 235         prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_IMEDIATE;
 236         prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
 237         prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
 238         prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_HI);
 239         prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_HI << RFSPOL_SHIFT;
 240
 241         if ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_DSP_A) {
 242                 dev_dbg(dai->dev, "%s: DSP_A.\n", __func__);
 243                 prot_desc->rx_clk_pol = MSP_RISING_EDGE;
 244                 prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
 245
 246                 prot_desc->rx_data_delay = MSP_DELAY_1;
 247                 prot_desc->tx_data_delay = MSP_DELAY_1;
 248         } else {
 249                 dev_dbg(dai->dev, "%s: DSP_B.\n", __func__);
 250                 prot_desc->rx_clk_pol = MSP_FALLING_EDGE;
 251                 prot_desc->tx_clk_pol = MSP_RISING_EDGE;
 252
 253                 prot_desc->rx_data_delay = MSP_DELAY_0;
 254                 prot_desc->tx_data_delay = MSP_DELAY_0;
 255         }
 256
 257         prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
 258         prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
 259         prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
 260         prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
 261         prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
 262
 263         return 0;
 264 }
 265
 266 static int setup_i2s_protdesc(struct msp_protdesc *prot_desc)
 267 {
 268         prot_desc->rx_phase_mode = MSP_DUAL_PHASE;
 269         prot_desc->tx_phase_mode = MSP_DUAL_PHASE;
 270         prot_desc->rx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
 271         prot_desc->tx_phase2_start_mode = MSP_PHASE2_START_MODE_FSYNC;
 272         prot_desc->rx_byte_order = MSP_BTF_MS_BIT_FIRST;
 273         prot_desc->tx_byte_order = MSP_BTF_MS_BIT_FIRST;
 274         prot_desc->tx_fsync_pol = MSP_FSYNC_POL(MSP_FSYNC_POL_ACT_LO);
 275         prot_desc->rx_fsync_pol = MSP_FSYNC_POL_ACT_LO << RFSPOL_SHIFT;
 276
 277         prot_desc->rx_frame_len_1 = MSP_FRAME_LEN_1;
 278         prot_desc->rx_frame_len_2 = MSP_FRAME_LEN_1;
 279         prot_desc->tx_frame_len_1 = MSP_FRAME_LEN_1;
 280         prot_desc->tx_frame_len_2 = MSP_FRAME_LEN_1;
 281         prot_desc->rx_elem_len_1 = MSP_ELEM_LEN_16;
 282         prot_desc->rx_elem_len_2 = MSP_ELEM_LEN_16;
 283         prot_desc->tx_elem_len_1 = MSP_ELEM_LEN_16;
 284         prot_desc->tx_elem_len_2 = MSP_ELEM_LEN_16;
 285
 286         prot_desc->rx_clk_pol = MSP_RISING_EDGE;
 287         prot_desc->tx_clk_pol = MSP_FALLING_EDGE;
 288
 289         prot_desc->rx_data_delay = MSP_DELAY_0;
 290         prot_desc->tx_data_delay = MSP_DELAY_0;
 291
 292         prot_desc->tx_half_word_swap = MSP_SWAP_NONE;
 293         prot_desc->rx_half_word_swap = MSP_SWAP_NONE;
 294         prot_desc->compression_mode = MSP_COMPRESS_MODE_LINEAR;
 295         prot_desc->expansion_mode = MSP_EXPAND_MODE_LINEAR;
 296         prot_desc->frame_sync_ignore = MSP_FSYNC_IGNORE;
 297
 298         return 0;
 299 }
 300
 301 static int setup_msp_config(struct snd_pcm_substream *substream,
 302                         struct snd_soc_dai *dai,
 303                         struct ux500_msp_config *msp_config)
 304 {
 305         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 306         struct msp_protdesc *prot_desc = &msp_config->protdesc;
 307         struct snd_pcm_runtime *runtime = substream->runtime;
 308         unsigned int fmt = drvdata->fmt;
 309         int ret;
 310
 311         memset(msp_config, 0, sizeof(*msp_config));
 312
 313         msp_config->f_inputclk = drvdata->master_clk;
 314
 315         msp_config->tx_fifo_config = TX_FIFO_ENABLE;
 316         msp_config->rx_fifo_config = RX_FIFO_ENABLE;
 317         msp_config->def_elem_len = 1;
 318         msp_config->direction = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 319                                 MSP_DIR_TX : MSP_DIR_RX;
 320         msp_config->data_size = MSP_DATA_BITS_32;
 321         msp_config->frame_freq = runtime->rate;
 322
 323         dev_dbg(dai->dev, "%s: f_inputclk = %u, frame_freq = %u.\n",
 324                __func__, msp_config->f_inputclk, msp_config->frame_freq);
 325         /* To avoid division by zero */
 326         prot_desc->clocks_per_frame = 1;
 327
 328         dev_dbg(dai->dev, "%s: rate: %u, channels: %d.\n", __func__,
 329                 runtime->rate, runtime->channels);
 330         switch (fmt &
 331                 (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_MASTER_MASK)) {
 332         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
 333                 dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
 334
 335                 msp_config->default_protdesc = 1;
 336                 msp_config->protocol = MSP_I2S_PROTOCOL;
 337                 break;
 338
 339         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
 340                 dev_dbg(dai->dev, "%s: SND_SOC_DAIFMT_I2S.\n", __func__);
 341
 342                 msp_config->data_size = MSP_DATA_BITS_16;
 343                 msp_config->protocol = MSP_I2S_PROTOCOL;
 344
 345                 ret = setup_i2s_protdesc(prot_desc);
 346                 if (ret < 0)
 347                         return ret;
 348
 349                 break;
 350
 351         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
 352         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
 353         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
 354         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
 355                 dev_dbg(dai->dev, "%s: PCM format.\n", __func__);
 356
 357                 msp_config->data_size = MSP_DATA_BITS_16;
 358                 msp_config->protocol = MSP_PCM_PROTOCOL;
 359
 360                 ret = setup_pcm_protdesc(dai, fmt, prot_desc);
 361                 if (ret < 0)
 362                         return ret;
 363
 364                 ret = setup_pcm_multichan(dai, msp_config);
 365                 if (ret < 0)
 366                         return ret;
 367
 368                 ret = setup_pcm_framing(dai, runtime->rate, prot_desc);
 369                 if (ret < 0)
 370                         return ret;
 371
 372                 break;
 373
 374         default:
 375                 dev_err(dai->dev, "%s: Error: Unsopported format (%d)!\n",
 376                         __func__, fmt);
 377                 return -EINVAL;
 378         }
 379
 380         return setup_clocking(dai, fmt, msp_config);
 381 }
 382
 383 static int ux500_msp_dai_startup(struct snd_pcm_substream *substream,
 384                                 struct snd_soc_dai *dai)
 385 {
 386         int ret = 0;
 387         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 388
 389         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
 390                 snd_pcm_stream_str(substream));
 391
 392         /* Enable regulator */
 393         ret = regulator_enable(drvdata->reg_vape);
 394         if (ret != 0) {
 395                 dev_err(drvdata->msp->dev,
 396                         "%s: Failed to enable regulator!\n", __func__);
 397                 return ret;
 398         }
 399
 400         /* Prepare and enable clocks */
 401         dev_dbg(dai->dev, "%s: Enabling MSP-clocks.\n", __func__);
 402         ret = clk_prepare_enable(drvdata->pclk);
 403         if (ret) {
 404                 dev_err(drvdata->msp->dev,
 405                         "%s: Failed to prepare/enable pclk!\n", __func__);
 406                 goto err_pclk;
 407         }
 408
 409         ret = clk_prepare_enable(drvdata->clk);
 410         if (ret) {
 411                 dev_err(drvdata->msp->dev,
 412                         "%s: Failed to prepare/enable clk!\n", __func__);
 413                 goto err_clk;
 414         }
 415
 416         return ret;
 417 err_clk:
 418         clk_disable_unprepare(drvdata->pclk);
 419 err_pclk:
 420         regulator_disable(drvdata->reg_vape);
 421         return ret;
 422 }
 423
 424 static void ux500_msp_dai_shutdown(struct snd_pcm_substream *substream,
 425                                 struct snd_soc_dai *dai)
 426 {
 427         int ret;
 428         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 429         bool is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
 430
 431         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id,
 432                 snd_pcm_stream_str(substream));
 433
 434         if (drvdata->vape_opp_constraint == 1) {
 435                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 436                                         "ux500_msp_i2s", 50);
 437                 drvdata->vape_opp_constraint = 0;
 438         }
 439
 440         if (ux500_msp_i2s_close(drvdata->msp,
 441                                 is_playback ? MSP_DIR_TX : MSP_DIR_RX)) {
 442                 dev_err(dai->dev,
 443                         "%s: Error: MSP %d (%s): Unable to close i2s.\n",
 444                         __func__, dai->id, snd_pcm_stream_str(substream));
 445         }
 446
 447         /* Disable and unprepare clocks */
 448         clk_disable_unprepare(drvdata->clk);
 449         clk_disable_unprepare(drvdata->pclk);
 450
 451         /* Disable regulator */
 452         ret = regulator_disable(drvdata->reg_vape);
 453         if (ret < 0)
 454                 dev_err(dai->dev,
 455                         "%s: ERROR: Failed to disable regulator (%d)!\n",
 456                         __func__, ret);
 457 }
 458
 459 static int ux500_msp_dai_prepare(struct snd_pcm_substream *substream,
 460                                 struct snd_soc_dai *dai)
 461 {
 462         int ret = 0;
 463         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 464         struct snd_pcm_runtime *runtime = substream->runtime;
 465         struct ux500_msp_config msp_config;
 466
 467         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (rate = %d).\n", __func__,
 468                 dai->id, snd_pcm_stream_str(substream), runtime->rate);
 469
 470         setup_msp_config(substream, dai, &msp_config);
 471
 472         ret = ux500_msp_i2s_open(drvdata->msp, &msp_config);
 473         if (ret < 0) {
 474                 dev_err(dai->dev, "%s: Error: msp_setup failed (ret = %d)!\n",
 475                         __func__, ret);
 476                 return ret;
 477         }
 478
 479         /* Set OPP-level */
 480         if ((drvdata->fmt & SND_SOC_DAIFMT_MASTER_MASK) &&
 481                 (drvdata->msp->f_bitclk > 19200000)) {
 482                 /* If the bit-clock is higher than 19.2MHz, Vape should be
 483                  * run in 100% OPP. Only when bit-clock is used (MSP master) */
 484                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 485                                         "ux500-msp-i2s", 100);
 486                 drvdata->vape_opp_constraint = 1;
 487         } else {
 488                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 489                                         "ux500-msp-i2s", 50);
 490                 drvdata->vape_opp_constraint = 0;
 491         }
 492
 493         return ret;
 494 }
 495
 496 static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream,
 497                                 struct snd_pcm_hw_params *params,
 498                                 struct snd_soc_dai *dai)
 499 {
 500         unsigned int mask, slots_active;
 501         struct snd_pcm_runtime *runtime = substream->runtime;
 502         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 503
 504         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n",
 505                         __func__, dai->id, snd_pcm_stream_str(substream));
 506
 507         switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 508         case SND_SOC_DAIFMT_I2S:
 509                 snd_pcm_hw_constraint_minmax(runtime,
 510                                 SNDRV_PCM_HW_PARAM_CHANNELS,
 511                                 1, 2);
 512                 break;
 513
 514         case SND_SOC_DAIFMT_DSP_B:
 515         case SND_SOC_DAIFMT_DSP_A:
 516                 mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 517                         drvdata->tx_mask :
 518                         drvdata->rx_mask;
 519
 520                 slots_active = hweight32(mask);
 521                 dev_dbg(dai->dev, "TDM-slots active: %d", slots_active);
 522
 523                 snd_pcm_hw_constraint_minmax(runtime,
 524                                 SNDRV_PCM_HW_PARAM_CHANNELS,
 525                                 slots_active, slots_active);
 526                 break;
 527
 528         default:
 529                 dev_err(dai->dev,
 530                         "%s: Error: Unsupported protocol (fmt = 0x%x)!\n",
 531                         __func__, drvdata->fmt);
 532                 return -EINVAL;
 533         }
 534
 535         return 0;
 536 }
 537
 538 static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai,
 539                                 unsigned int fmt)
 540 {
 541         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 542
 543         dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id);
 544
 545         switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
 546                 SND_SOC_DAIFMT_MASTER_MASK)) {
 547         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
 548         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
 549         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
 550         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
 551         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
 552         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
 553                 break;
 554
 555         default:
 556                 dev_err(dai->dev,
 557                         "%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n",
 558                         __func__, drvdata->fmt);
 559                 return -EINVAL;
 560         }
 561
 562         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 563         case SND_SOC_DAIFMT_NB_NF:
 564         case SND_SOC_DAIFMT_NB_IF:
 565         case SND_SOC_DAIFMT_IB_IF:
 566                 break;
 567
 568         default:
 569                 dev_err(dai->dev,
 570                         "%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
 571                         __func__, drvdata->fmt);
 572                 return -EINVAL;
 573         }
 574
 575         drvdata->fmt = fmt;
 576         return 0;
 577 }
 578
 579 static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai,
 580                                 unsigned int tx_mask,
 581                                 unsigned int rx_mask,
 582                                 int slots, int slot_width)
 583 {
 584         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 585         unsigned int cap;
 586
 587         switch (slots) {
 588         case 1:
 589                 cap = 0x01;
 590                 break;
 591         case 2:
 592                 cap = 0x03;
 593                 break;
 594         case 8:
 595                 cap = 0xFF;
 596                 break;
 597         case 16:
 598                 cap = 0xFFFF;
 599                 break;
 600         default:
 601                 dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n",
 602                         __func__, slots);
 603                 return -EINVAL;
 604         }
 605         drvdata->slots = slots;
 606
 607         if (!(slot_width == 16)) {
 608                 dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n",
 609                         __func__, slot_width);
 610                 return -EINVAL;
 611         }
 612         drvdata->slot_width = slot_width;
 613
 614         drvdata->tx_mask = tx_mask & cap;
 615         drvdata->rx_mask = rx_mask & cap;
 616
 617         return 0;
 618 }
 619
 620 static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai,
 621                                         int clk_id, unsigned int freq, int dir)
 622 {
 623         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 624
 625         dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n",
 626                 __func__, dai->id, clk_id, freq);
 627
 628         switch (clk_id) {
 629         case UX500_MSP_MASTER_CLOCK:
 630                 drvdata->master_clk = freq;
 631                 break;
 632
 633         default:
 634                 dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n",
 635                         __func__, dai->id, clk_id);
 636                 return -EINVAL;
 637         }
 638
 639         return 0;
 640 }
 641
 642 static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream,
 643                                 int cmd, struct snd_soc_dai *dai)
 644 {
 645         int ret = 0;
 646         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 647
 648         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n",
 649                 __func__, dai->id, snd_pcm_stream_str(substream),
 650                 (int)drvdata->msp->id, cmd);
 651
 652         ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream);
 653
 654         return ret;
 655 }
 656
 657 static int ux500_msp_dai_probe(struct snd_soc_dai *dai)
 658 {
 659         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 660
 661         dai->playback_dma_data = &drvdata->msp->playback_dma_data;
 662         dai->capture_dma_data = &drvdata->msp->capture_dma_data;
 663
 664         drvdata->msp->playback_dma_data.data_size = drvdata->slot_width;
 665         drvdata->msp->capture_dma_data.data_size = drvdata->slot_width;
 666
 667         return 0;
 668 }
 669
 670 static struct snd_soc_dai_ops ux500_msp_dai_ops[] = {
 671         {
 672                 .set_sysclk = ux500_msp_dai_set_dai_sysclk,
 673                 .set_fmt = ux500_msp_dai_set_dai_fmt,
 674                 .set_tdm_slot = ux500_msp_dai_set_tdm_slot,
 675                 .startup = ux500_msp_dai_startup,
 676                 .shutdown = ux500_msp_dai_shutdown,
 677                 .prepare = ux500_msp_dai_prepare,
 678                 .trigger = ux500_msp_dai_trigger,
 679                 .hw_params = ux500_msp_dai_hw_params,
 680         }
 681 };
 682
 683 static struct snd_soc_dai_driver ux500_msp_dai_drv[UX500_NBR_OF_DAI] = {
 684         {
 685                 .name = "ux500-msp-i2s.0",
 686                 .probe = ux500_msp_dai_probe,
 687                 .id = 0,
 688                 .suspend = NULL,
 689                 .resume = NULL,
 690                 .playback = {
 691                         .channels_min = UX500_MSP_MIN_CHANNELS,
 692                         .channels_max = UX500_MSP_MAX_CHANNELS,
 693                         .rates = UX500_I2S_RATES,
 694                         .formats = UX500_I2S_FORMATS,
 695                 },
 696                 .capture = {
 697                         .channels_min = UX500_MSP_MIN_CHANNELS,
 698                         .channels_max = UX500_MSP_MAX_CHANNELS,
 699                         .rates = UX500_I2S_RATES,
 700                         .formats = UX500_I2S_FORMATS,
 701                 },
 702                 .ops = ux500_msp_dai_ops,
 703         },
 704         {
 705                 .name = "ux500-msp-i2s.1",
 706                 .probe = ux500_msp_dai_probe,
 707                 .id = 1,
 708                 .suspend = NULL,
 709                 .resume = NULL,
 710                 .playback = {
 711                         .channels_min = UX500_MSP_MIN_CHANNELS,
 712                         .channels_max = UX500_MSP_MAX_CHANNELS,
 713                         .rates = UX500_I2S_RATES,
 714                         .formats = UX500_I2S_FORMATS,
 715                 },
 716                 .capture = {
 717                         .channels_min = UX500_MSP_MIN_CHANNELS,
 718                         .channels_max = UX500_MSP_MAX_CHANNELS,
 719                         .rates = UX500_I2S_RATES,
 720                         .formats = UX500_I2S_FORMATS,
 721                 },
 722                 .ops = ux500_msp_dai_ops,
 723         },
 724         {
 725                 .name = "ux500-msp-i2s.2",
 726                 .id = 2,
 727                 .probe = ux500_msp_dai_probe,
 728                 .suspend = NULL,
 729                 .resume = NULL,
 730                 .playback = {
 731                         .channels_min = UX500_MSP_MIN_CHANNELS,
 732                         .channels_max = UX500_MSP_MAX_CHANNELS,
 733                         .rates = UX500_I2S_RATES,
 734                         .formats = UX500_I2S_FORMATS,
 735                 },
 736                 .capture = {
 737                         .channels_min = UX500_MSP_MIN_CHANNELS,
 738                         .channels_max = UX500_MSP_MAX_CHANNELS,
 739                         .rates = UX500_I2S_RATES,
 740                         .formats = UX500_I2S_FORMATS,
 741                 },
 742                 .ops = ux500_msp_dai_ops,
 743         },
 744         {
 745                 .name = "ux500-msp-i2s.3",
 746                 .probe = ux500_msp_dai_probe,
 747                 .id = 3,
 748                 .suspend = NULL,
 749                 .resume = NULL,
 750                 .playback = {
 751                         .channels_min = UX500_MSP_MIN_CHANNELS,
 752                         .channels_max = UX500_MSP_MAX_CHANNELS,
 753                         .rates = UX500_I2S_RATES,
 754                         .formats = UX500_I2S_FORMATS,
 755                 },
 756                 .capture = {
 757                         .channels_min = UX500_MSP_MIN_CHANNELS,
 758                         .channels_max = UX500_MSP_MAX_CHANNELS,
 759                         .rates = UX500_I2S_RATES,
 760                         .formats = UX500_I2S_FORMATS,
 761                 },
 762                 .ops = ux500_msp_dai_ops,
 763         },
 764 };
 765
 766 static const struct snd_soc_component_driver ux500_msp_component = {
 767         .name           = "ux500-msp",
 768 };
 769
 770
 771 static int ux500_msp_drv_probe(struct platform_device *pdev)
 772 {
 773         struct ux500_msp_i2s_drvdata *drvdata;
 774         int ret = 0;
 775
 776         dev_dbg(&pdev->dev, "%s: Enter (pdev->name = %s).\n", __func__,
 777                 pdev->name);
 778
 779         drvdata = devm_kzalloc(&pdev->dev,
 780                                 sizeof(struct ux500_msp_i2s_drvdata),
 781                                 GFP_KERNEL);
 782         if (!drvdata)
 783                 return -ENOMEM;
 784
 785         drvdata->fmt = 0;
 786         drvdata->slots = 1;
 787         drvdata->tx_mask = 0x01;
 788         drvdata->rx_mask = 0x01;
 789         drvdata->slot_width = 16;
 790         drvdata->master_clk = MSP_INPUT_FREQ_APB;
 791
 792         drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape");
 793         if (IS_ERR(drvdata->reg_vape)) {
 794                 ret = (int)PTR_ERR(drvdata->reg_vape);
 795                 dev_err(&pdev->dev,
 796                         "%s: ERROR: Failed to get Vape supply (%d)!\n",
 797                         __func__, ret);
 798                 return ret;
 799         }
 800         prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);
 801
 802         drvdata->pclk = clk_get(&pdev->dev, "apb_pclk");
 803         if (IS_ERR(drvdata->pclk)) {
 804                 ret = (int)PTR_ERR(drvdata->pclk);
 805                 dev_err(&pdev->dev, "%s: ERROR: clk_get of pclk failed (%d)!\n",
 806                         __func__, ret);
 807                 goto err_pclk;
 808         }
 809
 810         drvdata->clk = clk_get(&pdev->dev, NULL);
 811         if (IS_ERR(drvdata->clk)) {
 812                 ret = (int)PTR_ERR(drvdata->clk);
 813                 dev_err(&pdev->dev, "%s: ERROR: clk_get failed (%d)!\n",
 814                         __func__, ret);
 815                 goto err_clk;
 816         }
 817
 818         ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
 819                                 pdev->dev.platform_data);
 820         if (!drvdata->msp) {
 821                 dev_err(&pdev->dev,
 822                         "%s: ERROR: Failed to init MSP-struct (%d)!",
 823                         __func__, ret);
 824                 goto err_init_msp;
 825         }
 826         dev_set_drvdata(&pdev->dev, drvdata);
 827
 828         ret = snd_soc_register_component(&pdev->dev, &ux500_msp_component,
 829                                          &ux500_msp_dai_drv[drvdata->msp->id], 1);
 830         if (ret < 0) {
 831                 dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
 832                         __func__, drvdata->msp->id);
 833                 goto err_init_msp;
 834         }
 835
 836         ret = ux500_pcm_register_platform(pdev);
 837         if (ret < 0) {
 838                 dev_err(&pdev->dev,
 839                         "Error: %s: Failed to register PCM platform device!\n",
 840                         __func__);
 841                 goto err_reg_plat;
 842         }
 843
 844         return 0;
 845
 846 err_reg_plat:
 847         snd_soc_unregister_component(&pdev->dev);
 848 err_init_msp:
 849         clk_put(drvdata->clk);
 850 err_clk:
 851         clk_put(drvdata->pclk);
 852 err_pclk:
 853         devm_regulator_put(drvdata->reg_vape);
 854
 855         return ret;
 856 }
 857
 858 static int ux500_msp_drv_remove(struct platform_device *pdev)
 859 {
 860         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
 861
 862         ux500_pcm_unregister_platform(pdev);
 863
 864         snd_soc_unregister_component(&pdev->dev);
 865
 866         devm_regulator_put(drvdata->reg_vape);
 867         prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
 868
 869         clk_put(drvdata->clk);
 870         clk_put(drvdata->pclk);
 871
 872         ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
 873
 874         return 0;
 875 }
 876
 877 static const struct of_device_id ux500_msp_i2s_match[] = {
 878         { .compatible = "stericsson,ux500-msp-i2s", },
 879         {},
 880 };
 881
 882 static struct platform_driver msp_i2s_driver = {
 883         .driver = {
 884                 .name = "ux500-msp-i2s",
 885                 .owner = THIS_MODULE,
 886                 .of_match_table = ux500_msp_i2s_match,
 887         },
 888         .probe = ux500_msp_drv_probe,
 889         .remove = ux500_msp_drv_remove,
 890 };
 891 module_platform_driver(msp_i2s_driver);
 892
 893 MODULE_LICENSE("GPL v2");