sound/soc/ux500/ux500_msp_dai.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) ST-Ericsson SA 2012
   4  *
   5  * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
   6  *         Roger Nilsson <roger.xr.nilsson@stericsson.com>
   7  *         for ST-Ericsson.
   8  *
   9  * License terms:
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/slab.h>
  14 #include <linux/bitops.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/clk.h>
  17 #include <linux/of.h>
  18 #include <linux/regulator/consumer.h>
  19 #include <linux/mfd/dbx500-prcmu.h>
  20 #include <linux/platform_data/asoc-ux500-msp.h>
  21
  22 #include <sound/soc.h>
  23 #include <sound/soc-dai.h>
  24 #include <sound/dmaengine_pcm.h>
  25
  26 #include "ux500_msp_i2s.h"
  27 #include "ux500_msp_dai.h"
  28 #include "ux500_pcm.h"
  29
  30 static int setup_pcm_multichan(struct snd_soc_dai *dai,
  31                         struct ux500_msp_config *msp_config)
  32 {
  33         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
  34         struct msp_multichannel_config *multi =
  35                                         &msp_config->multichannel_config;
  36
  37         if (drvdata->slots > 1) {
  38                 msp_config->multichannel_configured = 1;
  39
  40                 multi->tx_multichannel_enable = true;
  41                 multi->rx_multichannel_enable = true;
  42                 multi->rx_comparison_enable_mode = MSP_COMPARISON_DISABLED;
  43
  44                 multi->tx_channel_0_enable = drvdata->tx_mask;
  45                 multi->tx_channel_1_enable = 0;
  46                 multi->tx_channel_2_enable = 0;
  47                 multi->tx_channel_3_enable = 0;
  48
  49                 multi->rx_channel_0_enable = drvdata->rx_mask;
  50                 multi->rx_channel_1_enable = 0;
  51                 multi->rx_channel_2_enable = 0;
  52                 multi->rx_channel_3_enable = 0;
  53
  54                 dev_dbg(dai->dev,
  55                         "%s: Multichannel enabled. Slots: %d, TX: %u, RX: %u\n",
  56                         __func__, drvdata->slots, multi->tx_channel_0_enable,
  57                         multi->rx_channel_0_enable);
  58         }
  59
  60         return 0;
  61 }
  62
  63 static int setup_frameper(struct snd_soc_dai *dai, unsigned int rate,
  64                         struct msp_protdesc *prot_desc)
  65 {
  66         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
  67
  68         switch (drvdata->slots) {
  69         case 1:
  70                 switch (rate) {
  71                 case 8000:
  72                         prot_desc->frame_period =
  73                                 FRAME_PER_SINGLE_SLOT_8_KHZ;
  74                         break;
  75
  76                 case 16000:
  77                         prot_desc->frame_period =
  78                                 FRAME_PER_SINGLE_SLOT_16_KHZ;
  79                         break;
  80
  81                 case 44100:
  82                         prot_desc->frame_period =
  83                                 FRAME_PER_SINGLE_SLOT_44_1_KHZ;
  84                         break;
  85
  86                 case 48000:
  87                         prot_desc->frame_period =
  88                                 FRAME_PER_SINGLE_SLOT_48_KHZ;
  89                         break;
  90
  91                 default:
  92                         dev_err(dai->dev,
  93                                 "%s: Error: Unsupported sample-rate (freq = %d)!\n",
  94                                 __func__, rate);
  95                         return -EINVAL;
  96                 }
  97                 break;
  98
  99         case 2:
 100                 prot_desc->frame_period = FRAME_PER_2_SLOTS;
 101                 break;
 102
 103         case 8:
 104                 prot_desc->frame_period = FRAME_PER_8_SLOTS;
 105                 break;
 106
 107         case 16:
 108                 prot_desc->frame_period = FRAME_PER_16_SLOTS;
 109                 break;
 110         default:
 111                 dev_err(dai->dev,
 112                         "%s: Error: Unsupported slot-count (slots = %d)!\n",
 113                         __func__, drvdata->slots);
 114                 return -EINVAL;
 115         }
 116
 117         prot_desc->clocks_per_frame =
 118                         prot_desc->frame_period+1;
 119
 120         dev_dbg(dai->dev, "%s: Clocks per frame: %u\n",
 121                 __func__,
 122                 prot_desc->clocks_per_frame);
 123
 124         return 0;
 125 }
 126
 127 static int setup_pcm_framing(struct snd_soc_dai *dai, unsigned int rate,
 128                         struct msp_protdesc *prot_desc)
 129 {
 130         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 131
 132         u32 frame_length = MSP_FRAME_LEN_1;
 133
 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: Unsupported 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: Unsupported 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: Unsupported 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                  */
 485                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 486                                         "ux500-msp-i2s", 100);
 487                 drvdata->vape_opp_constraint = 1;
 488         } else {
 489                 prcmu_qos_update_requirement(PRCMU_QOS_APE_OPP,
 490                                         "ux500-msp-i2s", 50);
 491                 drvdata->vape_opp_constraint = 0;
 492         }
 493
 494         return ret;
 495 }
 496
 497 static int ux500_msp_dai_hw_params(struct snd_pcm_substream *substream,
 498                                 struct snd_pcm_hw_params *params,
 499                                 struct snd_soc_dai *dai)
 500 {
 501         unsigned int mask, slots_active;
 502         struct snd_pcm_runtime *runtime = substream->runtime;
 503         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 504
 505         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter.\n",
 506                         __func__, dai->id, snd_pcm_stream_str(substream));
 507
 508         switch (drvdata->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 509         case SND_SOC_DAIFMT_I2S:
 510                 snd_pcm_hw_constraint_minmax(runtime,
 511                                 SNDRV_PCM_HW_PARAM_CHANNELS,
 512                                 1, 2);
 513                 break;
 514
 515         case SND_SOC_DAIFMT_DSP_B:
 516         case SND_SOC_DAIFMT_DSP_A:
 517                 mask = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
 518                         drvdata->tx_mask :
 519                         drvdata->rx_mask;
 520
 521                 slots_active = hweight32(mask);
 522                 dev_dbg(dai->dev, "TDM-slots active: %d", slots_active);
 523
 524                 snd_pcm_hw_constraint_single(runtime,
 525                                 SNDRV_PCM_HW_PARAM_CHANNELS,
 526                                 slots_active);
 527                 break;
 528
 529         default:
 530                 dev_err(dai->dev,
 531                         "%s: Error: Unsupported protocol (fmt = 0x%x)!\n",
 532                         __func__, drvdata->fmt);
 533                 return -EINVAL;
 534         }
 535
 536         return 0;
 537 }
 538
 539 static int ux500_msp_dai_set_dai_fmt(struct snd_soc_dai *dai,
 540                                 unsigned int fmt)
 541 {
 542         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 543
 544         dev_dbg(dai->dev, "%s: MSP %d: Enter.\n", __func__, dai->id);
 545
 546         switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK |
 547                 SND_SOC_DAIFMT_MASTER_MASK)) {
 548         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS:
 549         case SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM:
 550         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBS_CFS:
 551         case SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM:
 552         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBS_CFS:
 553         case SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_CBM_CFM:
 554                 break;
 555
 556         default:
 557                 dev_err(dai->dev,
 558                         "%s: Error: Unsupported protocol/master (fmt = 0x%x)!\n",
 559                         __func__, drvdata->fmt);
 560                 return -EINVAL;
 561         }
 562
 563         switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 564         case SND_SOC_DAIFMT_NB_NF:
 565         case SND_SOC_DAIFMT_NB_IF:
 566         case SND_SOC_DAIFMT_IB_IF:
 567                 break;
 568
 569         default:
 570                 dev_err(dai->dev,
 571                         "%s: Error: Unsupported inversion (fmt = 0x%x)!\n",
 572                         __func__, drvdata->fmt);
 573                 return -EINVAL;
 574         }
 575
 576         drvdata->fmt = fmt;
 577         return 0;
 578 }
 579
 580 static int ux500_msp_dai_set_tdm_slot(struct snd_soc_dai *dai,
 581                                 unsigned int tx_mask,
 582                                 unsigned int rx_mask,
 583                                 int slots, int slot_width)
 584 {
 585         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 586         unsigned int cap;
 587
 588         switch (slots) {
 589         case 1:
 590                 cap = 0x01;
 591                 break;
 592         case 2:
 593                 cap = 0x03;
 594                 break;
 595         case 8:
 596                 cap = 0xFF;
 597                 break;
 598         case 16:
 599                 cap = 0xFFFF;
 600                 break;
 601         default:
 602                 dev_err(dai->dev, "%s: Error: Unsupported slot-count (%d)!\n",
 603                         __func__, slots);
 604                 return -EINVAL;
 605         }
 606         drvdata->slots = slots;
 607
 608         if (!(slot_width == 16)) {
 609                 dev_err(dai->dev, "%s: Error: Unsupported slot-width (%d)!\n",
 610                         __func__, slot_width);
 611                 return -EINVAL;
 612         }
 613         drvdata->slot_width = slot_width;
 614
 615         drvdata->tx_mask = tx_mask & cap;
 616         drvdata->rx_mask = rx_mask & cap;
 617
 618         return 0;
 619 }
 620
 621 static int ux500_msp_dai_set_dai_sysclk(struct snd_soc_dai *dai,
 622                                         int clk_id, unsigned int freq, int dir)
 623 {
 624         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 625
 626         dev_dbg(dai->dev, "%s: MSP %d: Enter. clk-id: %d, freq: %u.\n",
 627                 __func__, dai->id, clk_id, freq);
 628
 629         switch (clk_id) {
 630         case UX500_MSP_MASTER_CLOCK:
 631                 drvdata->master_clk = freq;
 632                 break;
 633
 634         default:
 635                 dev_err(dai->dev, "%s: MSP %d: Invalid clk-id (%d)!\n",
 636                         __func__, dai->id, clk_id);
 637                 return -EINVAL;
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int ux500_msp_dai_trigger(struct snd_pcm_substream *substream,
 644                                 int cmd, struct snd_soc_dai *dai)
 645 {
 646         int ret = 0;
 647         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 648
 649         dev_dbg(dai->dev, "%s: MSP %d (%s): Enter (msp->id = %d, cmd = %d).\n",
 650                 __func__, dai->id, snd_pcm_stream_str(substream),
 651                 (int)drvdata->msp->id, cmd);
 652
 653         ret = ux500_msp_i2s_trigger(drvdata->msp, cmd, substream->stream);
 654
 655         return ret;
 656 }
 657
 658 static int ux500_msp_dai_of_probe(struct snd_soc_dai *dai)
 659 {
 660         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 661         struct snd_dmaengine_dai_dma_data *playback_dma_data;
 662         struct snd_dmaengine_dai_dma_data *capture_dma_data;
 663
 664         playback_dma_data = devm_kzalloc(dai->dev,
 665                                          sizeof(*playback_dma_data),
 666                                          GFP_KERNEL);
 667         if (!playback_dma_data)
 668                 return -ENOMEM;
 669
 670         capture_dma_data = devm_kzalloc(dai->dev,
 671                                         sizeof(*capture_dma_data),
 672                                         GFP_KERNEL);
 673         if (!capture_dma_data)
 674                 return -ENOMEM;
 675
 676         playback_dma_data->addr = drvdata->msp->playback_dma_data.tx_rx_addr;
 677         capture_dma_data->addr = drvdata->msp->capture_dma_data.tx_rx_addr;
 678
 679         playback_dma_data->maxburst = 4;
 680         capture_dma_data->maxburst = 4;
 681
 682         snd_soc_dai_init_dma_data(dai, playback_dma_data, capture_dma_data);
 683
 684         return 0;
 685 }
 686
 687 static int ux500_msp_dai_probe(struct snd_soc_dai *dai)
 688 {
 689         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(dai->dev);
 690         struct msp_i2s_platform_data *pdata = dai->dev->platform_data;
 691         int ret;
 692
 693         if (!pdata) {
 694                 ret = ux500_msp_dai_of_probe(dai);
 695                 return ret;
 696         }
 697
 698         drvdata->msp->playback_dma_data.data_size = drvdata->slot_width;
 699         drvdata->msp->capture_dma_data.data_size = drvdata->slot_width;
 700
 701         snd_soc_dai_init_dma_data(dai,
 702                                   &drvdata->msp->playback_dma_data,
 703                                   &drvdata->msp->capture_dma_data);
 704         return 0;
 705 }
 706
 707 static const struct snd_soc_dai_ops ux500_msp_dai_ops[] = {
 708         {
 709                 .set_sysclk = ux500_msp_dai_set_dai_sysclk,
 710                 .set_fmt = ux500_msp_dai_set_dai_fmt,
 711                 .set_tdm_slot = ux500_msp_dai_set_tdm_slot,
 712                 .startup = ux500_msp_dai_startup,
 713                 .shutdown = ux500_msp_dai_shutdown,
 714                 .prepare = ux500_msp_dai_prepare,
 715                 .trigger = ux500_msp_dai_trigger,
 716                 .hw_params = ux500_msp_dai_hw_params,
 717         }
 718 };
 719
 720 static struct snd_soc_dai_driver ux500_msp_dai_drv = {
 721         .probe                 = ux500_msp_dai_probe,
 722         .suspend               = NULL,
 723         .resume                = NULL,
 724         .playback.channels_min = UX500_MSP_MIN_CHANNELS,
 725         .playback.channels_max = UX500_MSP_MAX_CHANNELS,
 726         .playback.rates        = UX500_I2S_RATES,
 727         .playback.formats      = UX500_I2S_FORMATS,
 728         .capture.channels_min  = UX500_MSP_MIN_CHANNELS,
 729         .capture.channels_max  = UX500_MSP_MAX_CHANNELS,
 730         .capture.rates         = UX500_I2S_RATES,
 731         .capture.formats       = UX500_I2S_FORMATS,
 732         .ops                   = ux500_msp_dai_ops,
 733 };
 734
 735 static const struct snd_soc_component_driver ux500_msp_component = {
 736         .name           = "ux500-msp",
 737 };
 738
 739
 740 static int ux500_msp_drv_probe(struct platform_device *pdev)
 741 {
 742         struct ux500_msp_i2s_drvdata *drvdata;
 743         struct msp_i2s_platform_data *pdata = pdev->dev.platform_data;
 744         struct device_node *np = pdev->dev.of_node;
 745         int ret = 0;
 746
 747         if (!pdata && !np) {
 748                 dev_err(&pdev->dev, "No platform data or Device Tree found\n");
 749                 return -ENODEV;
 750         }
 751
 752         drvdata = devm_kzalloc(&pdev->dev,
 753                                 sizeof(struct ux500_msp_i2s_drvdata),
 754                                 GFP_KERNEL);
 755         if (!drvdata)
 756                 return -ENOMEM;
 757
 758         drvdata->fmt = 0;
 759         drvdata->slots = 1;
 760         drvdata->tx_mask = 0x01;
 761         drvdata->rx_mask = 0x01;
 762         drvdata->slot_width = 16;
 763         drvdata->master_clk = MSP_INPUT_FREQ_APB;
 764
 765         drvdata->reg_vape = devm_regulator_get(&pdev->dev, "v-ape");
 766         if (IS_ERR(drvdata->reg_vape)) {
 767                 ret = (int)PTR_ERR(drvdata->reg_vape);
 768                 dev_err(&pdev->dev,
 769                         "%s: ERROR: Failed to get Vape supply (%d)!\n",
 770                         __func__, ret);
 771                 return ret;
 772         }
 773         prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, (char *)pdev->name, 50);
 774
 775         drvdata->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
 776         if (IS_ERR(drvdata->pclk)) {
 777                 ret = (int)PTR_ERR(drvdata->pclk);
 778                 dev_err(&pdev->dev,
 779                         "%s: ERROR: devm_clk_get of pclk failed (%d)!\n",
 780                         __func__, ret);
 781                 return ret;
 782         }
 783
 784         drvdata->clk = devm_clk_get(&pdev->dev, NULL);
 785         if (IS_ERR(drvdata->clk)) {
 786                 ret = (int)PTR_ERR(drvdata->clk);
 787                 dev_err(&pdev->dev,
 788                         "%s: ERROR: devm_clk_get failed (%d)!\n",
 789                         __func__, ret);
 790                 return ret;
 791         }
 792
 793         ret = ux500_msp_i2s_init_msp(pdev, &drvdata->msp,
 794                                 pdev->dev.platform_data);
 795         if (!drvdata->msp) {
 796                 dev_err(&pdev->dev,
 797                         "%s: ERROR: Failed to init MSP-struct (%d)!",
 798                         __func__, ret);
 799                 return ret;
 800         }
 801         dev_set_drvdata(&pdev->dev, drvdata);
 802
 803         ret = snd_soc_register_component(&pdev->dev, &ux500_msp_component,
 804                                          &ux500_msp_dai_drv, 1);
 805         if (ret < 0) {
 806                 dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
 807                         __func__, drvdata->msp->id);
 808                 return ret;
 809         }
 810
 811         ret = ux500_pcm_register_platform(pdev);
 812         if (ret < 0) {
 813                 dev_err(&pdev->dev,
 814                         "Error: %s: Failed to register PCM platform device!\n",
 815                         __func__);
 816                 goto err_reg_plat;
 817         }
 818
 819         return 0;
 820
 821 err_reg_plat:
 822         snd_soc_unregister_component(&pdev->dev);
 823         return ret;
 824 }
 825
 826 static int ux500_msp_drv_remove(struct platform_device *pdev)
 827 {
 828         struct ux500_msp_i2s_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
 829
 830         ux500_pcm_unregister_platform(pdev);
 831
 832         snd_soc_unregister_component(&pdev->dev);
 833
 834         prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, "ux500_msp_i2s");
 835
 836         ux500_msp_i2s_cleanup_msp(pdev, drvdata->msp);
 837
 838         return 0;
 839 }
 840
 841 static const struct of_device_id ux500_msp_i2s_match[] = {
 842         { .compatible = "stericsson,ux500-msp-i2s", },
 843         {},
 844 };
 845 MODULE_DEVICE_TABLE(of, ux500_msp_i2s_match);
 846
 847 static struct platform_driver msp_i2s_driver = {
 848         .driver = {
 849                 .name = "ux500-msp-i2s",
 850                 .of_match_table = ux500_msp_i2s_match,
 851         },
 852         .probe = ux500_msp_drv_probe,
 853         .remove = ux500_msp_drv_remove,
 854 };
 855 module_platform_driver(msp_i2s_driver);
 856
 857 MODULE_LICENSE("GPL v2");