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