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