sound/soc/fsl/fsl-asoc-card.c

   1 /*
   2  * Freescale Generic ASoC Sound Card driver with ASRC
   3  *
   4  * Copyright (C) 2014 Freescale Semiconductor, Inc.
   5  *
   6  * Author: Nicolin Chen <nicoleotsuka@gmail.com>
   7  *
   8  * This file is licensed under the terms of the GNU General Public License
   9  * version 2. This program is licensed "as is" without any warranty of any
  10  * kind, whether express or implied.
  11  */
  12
  13 #include <linux/clk.h>
  14 #include <linux/i2c.h>
  15 #include <linux/module.h>
  16 #include <linux/of_platform.h>
  17 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
  18 #include <sound/ac97_codec.h>
  19 #endif
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22
  23 #include "fsl_esai.h"
  24 #include "fsl_sai.h"
  25 #include "imx-audmux.h"
  26
  27 #include "../codecs/sgtl5000.h"
  28 #include "../codecs/wm8962.h"
  29 #include "../codecs/wm8960.h"
  30
  31 #define RX 0
  32 #define TX 1
  33
  34 /* Default DAI format without Master and Slave flag */
  35 #define DAI_FMT_BASE (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF)
  36
  37 /**
  38  * CODEC private data
  39  *
  40  * @mclk_freq: Clock rate of MCLK
  41  * @mclk_id: MCLK (or main clock) id for set_sysclk()
  42  * @fll_id: FLL (or secordary clock) id for set_sysclk()
  43  * @pll_id: PLL id for set_pll()
  44  */
  45 struct codec_priv {
  46         unsigned long mclk_freq;
  47         u32 mclk_id;
  48         u32 fll_id;
  49         u32 pll_id;
  50 };
  51
  52 /**
  53  * CPU private data
  54  *
  55  * @sysclk_freq[2]: SYSCLK rates for set_sysclk()
  56  * @sysclk_dir[2]: SYSCLK directions for set_sysclk()
  57  * @sysclk_id[2]: SYSCLK ids for set_sysclk()
  58  * @slot_width: Slot width of each frame
  59  *
  60  * Note: [1] for tx and [0] for rx
  61  */
  62 struct cpu_priv {
  63         unsigned long sysclk_freq[2];
  64         u32 sysclk_dir[2];
  65         u32 sysclk_id[2];
  66         u32 slot_width;
  67 };
  68
  69 /**
  70  * Freescale Generic ASOC card private data
  71  *
  72  * @dai_link[3]: DAI link structure including normal one and DPCM link
  73  * @pdev: platform device pointer
  74  * @codec_priv: CODEC private data
  75  * @cpu_priv: CPU private data
  76  * @card: ASoC card structure
  77  * @sample_rate: Current sample rate
  78  * @sample_format: Current sample format
  79  * @asrc_rate: ASRC sample rate used by Back-Ends
  80  * @asrc_format: ASRC sample format used by Back-Ends
  81  * @dai_fmt: DAI format between CPU and CODEC
  82  * @name: Card name
  83  */
  84
  85 struct fsl_asoc_card_priv {
  86         struct snd_soc_dai_link dai_link[3];
  87         struct platform_device *pdev;
  88         struct codec_priv codec_priv;
  89         struct cpu_priv cpu_priv;
  90         struct snd_soc_card card;
  91         u32 sample_rate;
  92         u32 sample_format;
  93         u32 asrc_rate;
  94         u32 asrc_format;
  95         u32 dai_fmt;
  96         char name[32];
  97 };
  98
  99 /**
 100  * This dapm route map exsits for DPCM link only.
 101  * The other routes shall go through Device Tree.
 102  */
 103 static const struct snd_soc_dapm_route audio_map[] = {
 104         {"CPU-Playback",  NULL, "ASRC-Playback"},
 105         {"Playback",  NULL, "CPU-Playback"},
 106         {"ASRC-Capture",  NULL, "CPU-Capture"},
 107         {"CPU-Capture",  NULL, "Capture"},
 108 };
 109
 110 static const struct snd_soc_dapm_route audio_map_ac97[] = {
 111         {"AC97 Playback",  NULL, "ASRC-Playback"},
 112         {"Playback",  NULL, "AC97 Playback"},
 113         {"ASRC-Capture",  NULL, "AC97 Capture"},
 114         {"AC97 Capture",  NULL, "Capture"},
 115 };
 116
 117 /* Add all possible widgets into here without being redundant */
 118 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
 119         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 120         SND_SOC_DAPM_LINE("Line In Jack", NULL),
 121         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 122         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 123         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 124         SND_SOC_DAPM_MIC("AMIC", NULL),
 125         SND_SOC_DAPM_MIC("DMIC", NULL),
 126 };
 127
 128 static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
 129 {
 130         return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
 131 }
 132
 133 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
 134                                    struct snd_pcm_hw_params *params)
 135 {
 136         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 137         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 138         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 139         struct cpu_priv *cpu_priv = &priv->cpu_priv;
 140         struct device *dev = rtd->card->dev;
 141         int ret;
 142
 143         priv->sample_rate = params_rate(params);
 144         priv->sample_format = params_format(params);
 145
 146         /*
 147          * If codec-dai is DAI Master and all configurations are already in the
 148          * set_bias_level(), bypass the remaining settings in hw_params().
 149          * Note: (dai_fmt & CBM_CFM) includes CBM_CFM and CBM_CFS.
 150          */
 151         if ((priv->card.set_bias_level &&
 152              priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) ||
 153             fsl_asoc_card_is_ac97(priv))
 154                 return 0;
 155
 156         /* Specific configurations of DAIs starts from here */
 157         ret = snd_soc_dai_set_sysclk(rtd->cpu_dai, cpu_priv->sysclk_id[tx],
 158                                      cpu_priv->sysclk_freq[tx],
 159                                      cpu_priv->sysclk_dir[tx]);
 160         if (ret) {
 161                 dev_err(dev, "failed to set sysclk for cpu dai\n");
 162                 return ret;
 163         }
 164
 165         if (cpu_priv->slot_width) {
 166                 ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2,
 167                                                cpu_priv->slot_width);
 168                 if (ret) {
 169                         dev_err(dev, "failed to set TDM slot for cpu dai\n");
 170                         return ret;
 171                 }
 172         }
 173
 174         return 0;
 175 }
 176
 177 static struct snd_soc_ops fsl_asoc_card_ops = {
 178         .hw_params = fsl_asoc_card_hw_params,
 179 };
 180
 181 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 182                               struct snd_pcm_hw_params *params)
 183 {
 184         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 185         struct snd_interval *rate;
 186         struct snd_mask *mask;
 187
 188         rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 189         rate->max = rate->min = priv->asrc_rate;
 190
 191         mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 192         snd_mask_none(mask);
 193         snd_mask_set(mask, priv->asrc_format);
 194
 195         return 0;
 196 }
 197
 198 static struct snd_soc_dai_link fsl_asoc_card_dai[] = {
 199         /* Default ASoC DAI Link*/
 200         {
 201                 .name = "HiFi",
 202                 .stream_name = "HiFi",
 203                 .ops = &fsl_asoc_card_ops,
 204         },
 205         /* DPCM Link between Front-End and Back-End (Optional) */
 206         {
 207                 .name = "HiFi-ASRC-FE",
 208                 .stream_name = "HiFi-ASRC-FE",
 209                 .codec_name = "snd-soc-dummy",
 210                 .codec_dai_name = "snd-soc-dummy-dai",
 211                 .dpcm_playback = 1,
 212                 .dpcm_capture = 1,
 213                 .dynamic = 1,
 214         },
 215         {
 216                 .name = "HiFi-ASRC-BE",
 217                 .stream_name = "HiFi-ASRC-BE",
 218                 .platform_name = "snd-soc-dummy",
 219                 .be_hw_params_fixup = be_hw_params_fixup,
 220                 .ops = &fsl_asoc_card_ops,
 221                 .dpcm_playback = 1,
 222                 .dpcm_capture = 1,
 223                 .no_pcm = 1,
 224         },
 225 };
 226
 227 static int fsl_asoc_card_set_bias_level(struct snd_soc_card *card,
 228                                         struct snd_soc_dapm_context *dapm,
 229                                         enum snd_soc_bias_level level)
 230 {
 231         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
 232         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
 233         struct codec_priv *codec_priv = &priv->codec_priv;
 234         struct device *dev = card->dev;
 235         unsigned int pll_out;
 236         int ret;
 237
 238         if (dapm->dev != codec_dai->dev)
 239                 return 0;
 240
 241         switch (level) {
 242         case SND_SOC_BIAS_PREPARE:
 243                 if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
 244                         break;
 245
 246                 if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
 247                         pll_out = priv->sample_rate * 384;
 248                 else
 249                         pll_out = priv->sample_rate * 256;
 250
 251                 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id,
 252                                           codec_priv->mclk_id,
 253                                           codec_priv->mclk_freq, pll_out);
 254                 if (ret) {
 255                         dev_err(dev, "failed to start FLL: %d\n", ret);
 256                         return ret;
 257                 }
 258
 259                 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->fll_id,
 260                                              pll_out, SND_SOC_CLOCK_IN);
 261                 if (ret) {
 262                         dev_err(dev, "failed to set SYSCLK: %d\n", ret);
 263                         return ret;
 264                 }
 265                 break;
 266
 267         case SND_SOC_BIAS_STANDBY:
 268                 if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
 269                         break;
 270
 271                 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 272                                              codec_priv->mclk_freq,
 273                                              SND_SOC_CLOCK_IN);
 274                 if (ret) {
 275                         dev_err(dev, "failed to switch away from FLL: %d\n", ret);
 276                         return ret;
 277                 }
 278
 279                 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 0, 0, 0);
 280                 if (ret) {
 281                         dev_err(dev, "failed to stop FLL: %d\n", ret);
 282                         return ret;
 283                 }
 284                 break;
 285
 286         default:
 287                 break;
 288         }
 289
 290         return 0;
 291 }
 292
 293 static int fsl_asoc_card_audmux_init(struct device_node *np,
 294                                      struct fsl_asoc_card_priv *priv)
 295 {
 296         struct device *dev = &priv->pdev->dev;
 297         u32 int_ptcr = 0, ext_ptcr = 0;
 298         int int_port, ext_port;
 299         int ret;
 300
 301         ret = of_property_read_u32(np, "mux-int-port", &int_port);
 302         if (ret) {
 303                 dev_err(dev, "mux-int-port missing or invalid\n");
 304                 return ret;
 305         }
 306         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
 307         if (ret) {
 308                 dev_err(dev, "mux-ext-port missing or invalid\n");
 309                 return ret;
 310         }
 311
 312         /*
 313          * The port numbering in the hardware manual starts at 1, while
 314          * the AUDMUX API expects it starts at 0.
 315          */
 316         int_port--;
 317         ext_port--;
 318
 319         /*
 320          * Use asynchronous mode (6 wires) for all cases except AC97.
 321          * If only 4 wires are needed, just set SSI into
 322          * synchronous mode and enable 4 PADs in IOMUX.
 323          */
 324         switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 325         case SND_SOC_DAIFMT_CBM_CFM:
 326                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 327                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 328                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 329                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 330                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 331                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 332                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 333                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 334                 break;
 335         case SND_SOC_DAIFMT_CBM_CFS:
 336                 int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 337                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 338                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 339                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 340                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 341                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 342                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 343                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 344                 break;
 345         case SND_SOC_DAIFMT_CBS_CFM:
 346                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 347                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 348                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 349                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 350                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 351                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 352                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 353                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 354                 break;
 355         case SND_SOC_DAIFMT_CBS_CFS:
 356                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 357                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 358                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 359                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 360                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 361                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 362                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 363                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 364                 break;
 365         default:
 366                 if (!fsl_asoc_card_is_ac97(priv))
 367                         return -EINVAL;
 368         }
 369
 370         if (fsl_asoc_card_is_ac97(priv)) {
 371                 int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 372                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 373                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 374                 ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 375                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 376                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 377         }
 378
 379         /* Asynchronous mode can not be set along with RCLKDIR */
 380         if (!fsl_asoc_card_is_ac97(priv)) {
 381                 unsigned int pdcr =
 382                                 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
 383
 384                 ret = imx_audmux_v2_configure_port(int_port, 0,
 385                                                    pdcr);
 386                 if (ret) {
 387                         dev_err(dev, "audmux internal port setup failed\n");
 388                         return ret;
 389                 }
 390         }
 391
 392         ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
 393                                            IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 394         if (ret) {
 395                 dev_err(dev, "audmux internal port setup failed\n");
 396                 return ret;
 397         }
 398
 399         if (!fsl_asoc_card_is_ac97(priv)) {
 400                 unsigned int pdcr =
 401                                 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
 402
 403                 ret = imx_audmux_v2_configure_port(ext_port, 0,
 404                                                    pdcr);
 405                 if (ret) {
 406                         dev_err(dev, "audmux external port setup failed\n");
 407                         return ret;
 408                 }
 409         }
 410
 411         ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
 412                                            IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 413         if (ret) {
 414                 dev_err(dev, "audmux external port setup failed\n");
 415                 return ret;
 416         }
 417
 418         return 0;
 419 }
 420
 421 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
 422 {
 423         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
 424         struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
 425         struct codec_priv *codec_priv = &priv->codec_priv;
 426         struct device *dev = card->dev;
 427         int ret;
 428
 429         if (fsl_asoc_card_is_ac97(priv)) {
 430 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
 431                 struct snd_soc_codec *codec = card->rtd[0].codec;
 432                 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 433
 434                 /*
 435                  * Use slots 3/4 for S/PDIF so SSI won't try to enable
 436                  * other slots and send some samples there
 437                  * due to SLOTREQ bits for S/PDIF received from codec
 438                  */
 439                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
 440                                      AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
 441 #endif
 442
 443                 return 0;
 444         }
 445
 446         ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 447                                      codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
 448         if (ret) {
 449                 dev_err(dev, "failed to set sysclk in %s\n", __func__);
 450                 return ret;
 451         }
 452
 453         return 0;
 454 }
 455
 456 static int fsl_asoc_card_probe(struct platform_device *pdev)
 457 {
 458         struct device_node *cpu_np, *codec_np, *asrc_np;
 459         struct device_node *np = pdev->dev.of_node;
 460         struct platform_device *asrc_pdev = NULL;
 461         struct platform_device *cpu_pdev;
 462         struct fsl_asoc_card_priv *priv;
 463         struct i2c_client *codec_dev;
 464         const char *codec_dai_name;
 465         u32 width;
 466         int ret;
 467
 468         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 469         if (!priv)
 470                 return -ENOMEM;
 471
 472         cpu_np = of_parse_phandle(np, "audio-cpu", 0);
 473         /* Give a chance to old DT binding */
 474         if (!cpu_np)
 475                 cpu_np = of_parse_phandle(np, "ssi-controller", 0);
 476         if (!cpu_np) {
 477                 dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
 478                 ret = -EINVAL;
 479                 goto fail;
 480         }
 481
 482         cpu_pdev = of_find_device_by_node(cpu_np);
 483         if (!cpu_pdev) {
 484                 dev_err(&pdev->dev, "failed to find CPU DAI device\n");
 485                 ret = -EINVAL;
 486                 goto fail;
 487         }
 488
 489         codec_np = of_parse_phandle(np, "audio-codec", 0);
 490         if (codec_np)
 491                 codec_dev = of_find_i2c_device_by_node(codec_np);
 492         else
 493                 codec_dev = NULL;
 494
 495         asrc_np = of_parse_phandle(np, "audio-asrc", 0);
 496         if (asrc_np)
 497                 asrc_pdev = of_find_device_by_node(asrc_np);
 498
 499         /* Get the MCLK rate only, and leave it controlled by CODEC drivers */
 500         if (codec_dev) {
 501                 struct clk *codec_clk = clk_get(&codec_dev->dev, NULL);
 502
 503                 if (!IS_ERR(codec_clk)) {
 504                         priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
 505                         clk_put(codec_clk);
 506                 }
 507         }
 508
 509         /* Default sample rate and format, will be updated in hw_params() */
 510         priv->sample_rate = 44100;
 511         priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
 512
 513         /* Assign a default DAI format, and allow each card to overwrite it */
 514         priv->dai_fmt = DAI_FMT_BASE;
 515
 516         /* Diversify the card configurations */
 517         if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
 518                 codec_dai_name = "cs42888";
 519                 priv->card.set_bias_level = NULL;
 520                 priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
 521                 priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
 522                 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
 523                 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
 524                 priv->cpu_priv.slot_width = 32;
 525                 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 526         } else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
 527                 codec_dai_name = "sgtl5000";
 528                 priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
 529                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 530         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
 531                 codec_dai_name = "wm8962";
 532                 priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 533                 priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
 534                 priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
 535                 priv->codec_priv.pll_id = WM8962_FLL;
 536                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 537         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
 538                 codec_dai_name = "wm8960-hifi";
 539                 priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 540                 priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
 541                 priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
 542                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 543         } else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
 544                 codec_dai_name = "ac97-hifi";
 545                 priv->card.set_bias_level = NULL;
 546                 priv->dai_fmt = SND_SOC_DAIFMT_AC97;
 547         } else {
 548                 dev_err(&pdev->dev, "unknown Device Tree compatible\n");
 549                 ret = -EINVAL;
 550                 goto asrc_fail;
 551         }
 552
 553         if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
 554                 dev_err(&pdev->dev, "failed to find codec device\n");
 555                 ret = -EINVAL;
 556                 goto asrc_fail;
 557         }
 558
 559         /* Common settings for corresponding Freescale CPU DAI driver */
 560         if (strstr(cpu_np->name, "ssi")) {
 561                 /* Only SSI needs to configure AUDMUX */
 562                 ret = fsl_asoc_card_audmux_init(np, priv);
 563                 if (ret) {
 564                         dev_err(&pdev->dev, "failed to init audmux\n");
 565                         goto asrc_fail;
 566                 }
 567         } else if (strstr(cpu_np->name, "esai")) {
 568                 priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
 569                 priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
 570         } else if (strstr(cpu_np->name, "sai")) {
 571                 priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
 572                 priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
 573         }
 574
 575         snprintf(priv->name, sizeof(priv->name), "%s-audio",
 576                  fsl_asoc_card_is_ac97(priv) ? "ac97" :
 577                  codec_dev->name);
 578
 579         /* Initialize sound card */
 580         priv->pdev = pdev;
 581         priv->card.dev = &pdev->dev;
 582         priv->card.name = priv->name;
 583         priv->card.dai_link = priv->dai_link;
 584         priv->card.dapm_routes = fsl_asoc_card_is_ac97(priv) ?
 585                                  audio_map_ac97 : audio_map;
 586         priv->card.late_probe = fsl_asoc_card_late_probe;
 587         priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
 588         priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
 589         priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
 590
 591         memcpy(priv->dai_link, fsl_asoc_card_dai,
 592                sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
 593
 594         ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
 595         if (ret) {
 596                 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 597                 goto asrc_fail;
 598         }
 599
 600         /* Normal DAI Link */
 601         priv->dai_link[0].cpu_of_node = cpu_np;
 602         priv->dai_link[0].codec_dai_name = codec_dai_name;
 603
 604         if (!fsl_asoc_card_is_ac97(priv))
 605                 priv->dai_link[0].codec_of_node = codec_np;
 606         else {
 607                 u32 idx;
 608
 609                 ret = of_property_read_u32(cpu_np, "cell-index", &idx);
 610                 if (ret) {
 611                         dev_err(&pdev->dev,
 612                                 "cannot get CPU index property\n");
 613                         goto asrc_fail;
 614                 }
 615
 616                 priv->dai_link[0].codec_name =
 617                                 devm_kasprintf(&pdev->dev, GFP_KERNEL,
 618                                                "ac97-codec.%u",
 619                                                (unsigned int)idx);
 620         }
 621
 622         priv->dai_link[0].platform_of_node = cpu_np;
 623         priv->dai_link[0].dai_fmt = priv->dai_fmt;
 624         priv->card.num_links = 1;
 625
 626         if (asrc_pdev) {
 627                 /* DPCM DAI Links only if ASRC exsits */
 628                 priv->dai_link[1].cpu_of_node = asrc_np;
 629                 priv->dai_link[1].platform_of_node = asrc_np;
 630                 priv->dai_link[2].codec_dai_name = codec_dai_name;
 631                 priv->dai_link[2].codec_of_node = codec_np;
 632                 priv->dai_link[2].codec_name =
 633                                 priv->dai_link[0].codec_name;
 634                 priv->dai_link[2].cpu_of_node = cpu_np;
 635                 priv->dai_link[2].dai_fmt = priv->dai_fmt;
 636                 priv->card.num_links = 3;
 637
 638                 ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
 639                                            &priv->asrc_rate);
 640                 if (ret) {
 641                         dev_err(&pdev->dev, "failed to get output rate\n");
 642                         ret = -EINVAL;
 643                         goto asrc_fail;
 644                 }
 645
 646                 ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
 647                 if (ret) {
 648                         dev_err(&pdev->dev, "failed to get output rate\n");
 649                         ret = -EINVAL;
 650                         goto asrc_fail;
 651                 }
 652
 653                 if (width == 24)
 654                         priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
 655                 else
 656                         priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
 657         }
 658
 659         /* Finish card registering */
 660         platform_set_drvdata(pdev, priv);
 661         snd_soc_card_set_drvdata(&priv->card, priv);
 662
 663         ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
 664         if (ret)
 665                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 666
 667 asrc_fail:
 668         of_node_put(asrc_np);
 669         of_node_put(codec_np);
 670 fail:
 671         of_node_put(cpu_np);
 672
 673         return ret;
 674 }
 675
 676 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
 677         { .compatible = "fsl,imx-audio-ac97", },
 678         { .compatible = "fsl,imx-audio-cs42888", },
 679         { .compatible = "fsl,imx-audio-sgtl5000", },
 680         { .compatible = "fsl,imx-audio-wm8962", },
 681         { .compatible = "fsl,imx-audio-wm8960", },
 682         {}
 683 };
 684 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
 685
 686 static struct platform_driver fsl_asoc_card_driver = {
 687         .probe = fsl_asoc_card_probe,
 688         .driver = {
 689                 .name = "fsl-asoc-card",
 690                 .pm = &snd_soc_pm_ops,
 691                 .of_match_table = fsl_asoc_card_dt_ids,
 692         },
 693 };
 694 module_platform_driver(fsl_asoc_card_driver);
 695
 696 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
 697 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
 698 MODULE_ALIAS("platform:fsl-asoc-card");
 699 MODULE_LICENSE("GPL");