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_pcm_runtime *rtd;
 233         struct snd_soc_dai *codec_dai;
 234         struct codec_priv *codec_priv = &priv->codec_priv;
 235         struct device *dev = card->dev;
 236         unsigned int pll_out;
 237         int ret;
 238
 239         rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
 240         codec_dai = rtd->codec_dai;
 241         if (dapm->dev != codec_dai->dev)
 242                 return 0;
 243
 244         switch (level) {
 245         case SND_SOC_BIAS_PREPARE:
 246                 if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
 247                         break;
 248
 249                 if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
 250                         pll_out = priv->sample_rate * 384;
 251                 else
 252                         pll_out = priv->sample_rate * 256;
 253
 254                 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id,
 255                                           codec_priv->mclk_id,
 256                                           codec_priv->mclk_freq, pll_out);
 257                 if (ret) {
 258                         dev_err(dev, "failed to start FLL: %d\n", ret);
 259                         return ret;
 260                 }
 261
 262                 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->fll_id,
 263                                              pll_out, SND_SOC_CLOCK_IN);
 264                 if (ret) {
 265                         dev_err(dev, "failed to set SYSCLK: %d\n", ret);
 266                         return ret;
 267                 }
 268                 break;
 269
 270         case SND_SOC_BIAS_STANDBY:
 271                 if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
 272                         break;
 273
 274                 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 275                                              codec_priv->mclk_freq,
 276                                              SND_SOC_CLOCK_IN);
 277                 if (ret) {
 278                         dev_err(dev, "failed to switch away from FLL: %d\n", ret);
 279                         return ret;
 280                 }
 281
 282                 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 0, 0, 0);
 283                 if (ret) {
 284                         dev_err(dev, "failed to stop FLL: %d\n", ret);
 285                         return ret;
 286                 }
 287                 break;
 288
 289         default:
 290                 break;
 291         }
 292
 293         return 0;
 294 }
 295
 296 static int fsl_asoc_card_audmux_init(struct device_node *np,
 297                                      struct fsl_asoc_card_priv *priv)
 298 {
 299         struct device *dev = &priv->pdev->dev;
 300         u32 int_ptcr = 0, ext_ptcr = 0;
 301         int int_port, ext_port;
 302         int ret;
 303
 304         ret = of_property_read_u32(np, "mux-int-port", &int_port);
 305         if (ret) {
 306                 dev_err(dev, "mux-int-port missing or invalid\n");
 307                 return ret;
 308         }
 309         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
 310         if (ret) {
 311                 dev_err(dev, "mux-ext-port missing or invalid\n");
 312                 return ret;
 313         }
 314
 315         /*
 316          * The port numbering in the hardware manual starts at 1, while
 317          * the AUDMUX API expects it starts at 0.
 318          */
 319         int_port--;
 320         ext_port--;
 321
 322         /*
 323          * Use asynchronous mode (6 wires) for all cases except AC97.
 324          * If only 4 wires are needed, just set SSI into
 325          * synchronous mode and enable 4 PADs in IOMUX.
 326          */
 327         switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 328         case SND_SOC_DAIFMT_CBM_CFM:
 329                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 330                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 331                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 332                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 333                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 334                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 335                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 336                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 337                 break;
 338         case SND_SOC_DAIFMT_CBM_CFS:
 339                 int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 340                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 341                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 342                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 343                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 344                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 345                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 346                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 347                 break;
 348         case SND_SOC_DAIFMT_CBS_CFM:
 349                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 350                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 351                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 352                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 353                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 354                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 355                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 356                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 357                 break;
 358         case SND_SOC_DAIFMT_CBS_CFS:
 359                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 360                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 361                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 362                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 363                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 364                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 365                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 366                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 367                 break;
 368         default:
 369                 if (!fsl_asoc_card_is_ac97(priv))
 370                         return -EINVAL;
 371         }
 372
 373         if (fsl_asoc_card_is_ac97(priv)) {
 374                 int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 375                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 376                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 377                 ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 378                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 379                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 380         }
 381
 382         /* Asynchronous mode can not be set along with RCLKDIR */
 383         if (!fsl_asoc_card_is_ac97(priv)) {
 384                 unsigned int pdcr =
 385                                 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
 386
 387                 ret = imx_audmux_v2_configure_port(int_port, 0,
 388                                                    pdcr);
 389                 if (ret) {
 390                         dev_err(dev, "audmux internal port setup failed\n");
 391                         return ret;
 392                 }
 393         }
 394
 395         ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
 396                                            IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 397         if (ret) {
 398                 dev_err(dev, "audmux internal port setup failed\n");
 399                 return ret;
 400         }
 401
 402         if (!fsl_asoc_card_is_ac97(priv)) {
 403                 unsigned int pdcr =
 404                                 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
 405
 406                 ret = imx_audmux_v2_configure_port(ext_port, 0,
 407                                                    pdcr);
 408                 if (ret) {
 409                         dev_err(dev, "audmux external port setup failed\n");
 410                         return ret;
 411                 }
 412         }
 413
 414         ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
 415                                            IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 416         if (ret) {
 417                 dev_err(dev, "audmux external port setup failed\n");
 418                 return ret;
 419         }
 420
 421         return 0;
 422 }
 423
 424 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
 425 {
 426         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
 427         struct snd_soc_pcm_runtime *rtd = list_first_entry(
 428                         &card->rtd_list, struct snd_soc_pcm_runtime, list);
 429         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 430         struct codec_priv *codec_priv = &priv->codec_priv;
 431         struct device *dev = card->dev;
 432         int ret;
 433
 434         if (fsl_asoc_card_is_ac97(priv)) {
 435 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
 436                 struct snd_soc_codec *codec = rtd->codec;
 437                 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
 438
 439                 /*
 440                  * Use slots 3/4 for S/PDIF so SSI won't try to enable
 441                  * other slots and send some samples there
 442                  * due to SLOTREQ bits for S/PDIF received from codec
 443                  */
 444                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
 445                                      AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
 446 #endif
 447
 448                 return 0;
 449         }
 450
 451         ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 452                                      codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
 453         if (ret) {
 454                 dev_err(dev, "failed to set sysclk in %s\n", __func__);
 455                 return ret;
 456         }
 457
 458         return 0;
 459 }
 460
 461 static int fsl_asoc_card_probe(struct platform_device *pdev)
 462 {
 463         struct device_node *cpu_np, *codec_np, *asrc_np;
 464         struct device_node *np = pdev->dev.of_node;
 465         struct platform_device *asrc_pdev = NULL;
 466         struct platform_device *cpu_pdev;
 467         struct fsl_asoc_card_priv *priv;
 468         struct i2c_client *codec_dev;
 469         const char *codec_dai_name;
 470         u32 width;
 471         int ret;
 472
 473         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 474         if (!priv)
 475                 return -ENOMEM;
 476
 477         cpu_np = of_parse_phandle(np, "audio-cpu", 0);
 478         /* Give a chance to old DT binding */
 479         if (!cpu_np)
 480                 cpu_np = of_parse_phandle(np, "ssi-controller", 0);
 481         if (!cpu_np) {
 482                 dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
 483                 ret = -EINVAL;
 484                 goto fail;
 485         }
 486
 487         cpu_pdev = of_find_device_by_node(cpu_np);
 488         if (!cpu_pdev) {
 489                 dev_err(&pdev->dev, "failed to find CPU DAI device\n");
 490                 ret = -EINVAL;
 491                 goto fail;
 492         }
 493
 494         codec_np = of_parse_phandle(np, "audio-codec", 0);
 495         if (codec_np)
 496                 codec_dev = of_find_i2c_device_by_node(codec_np);
 497         else
 498                 codec_dev = NULL;
 499
 500         asrc_np = of_parse_phandle(np, "audio-asrc", 0);
 501         if (asrc_np)
 502                 asrc_pdev = of_find_device_by_node(asrc_np);
 503
 504         /* Get the MCLK rate only, and leave it controlled by CODEC drivers */
 505         if (codec_dev) {
 506                 struct clk *codec_clk = clk_get(&codec_dev->dev, NULL);
 507
 508                 if (!IS_ERR(codec_clk)) {
 509                         priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
 510                         clk_put(codec_clk);
 511                 }
 512         }
 513
 514         /* Default sample rate and format, will be updated in hw_params() */
 515         priv->sample_rate = 44100;
 516         priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
 517
 518         /* Assign a default DAI format, and allow each card to overwrite it */
 519         priv->dai_fmt = DAI_FMT_BASE;
 520
 521         /* Diversify the card configurations */
 522         if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
 523                 codec_dai_name = "cs42888";
 524                 priv->card.set_bias_level = NULL;
 525                 priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
 526                 priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
 527                 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
 528                 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
 529                 priv->cpu_priv.slot_width = 32;
 530                 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 531         } else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
 532                 codec_dai_name = "sgtl5000";
 533                 priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
 534                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 535         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
 536                 codec_dai_name = "wm8962";
 537                 priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 538                 priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
 539                 priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
 540                 priv->codec_priv.pll_id = WM8962_FLL;
 541                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 542         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
 543                 codec_dai_name = "wm8960-hifi";
 544                 priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 545                 priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
 546                 priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
 547                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 548         } else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
 549                 codec_dai_name = "ac97-hifi";
 550                 priv->card.set_bias_level = NULL;
 551                 priv->dai_fmt = SND_SOC_DAIFMT_AC97;
 552         } else {
 553                 dev_err(&pdev->dev, "unknown Device Tree compatible\n");
 554                 ret = -EINVAL;
 555                 goto asrc_fail;
 556         }
 557
 558         if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
 559                 dev_err(&pdev->dev, "failed to find codec device\n");
 560                 ret = -EINVAL;
 561                 goto asrc_fail;
 562         }
 563
 564         /* Common settings for corresponding Freescale CPU DAI driver */
 565         if (strstr(cpu_np->name, "ssi")) {
 566                 /* Only SSI needs to configure AUDMUX */
 567                 ret = fsl_asoc_card_audmux_init(np, priv);
 568                 if (ret) {
 569                         dev_err(&pdev->dev, "failed to init audmux\n");
 570                         goto asrc_fail;
 571                 }
 572         } else if (strstr(cpu_np->name, "esai")) {
 573                 priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
 574                 priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
 575         } else if (strstr(cpu_np->name, "sai")) {
 576                 priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
 577                 priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
 578         }
 579
 580         snprintf(priv->name, sizeof(priv->name), "%s-audio",
 581                  fsl_asoc_card_is_ac97(priv) ? "ac97" :
 582                  codec_dev->name);
 583
 584         /* Initialize sound card */
 585         priv->pdev = pdev;
 586         priv->card.dev = &pdev->dev;
 587         priv->card.name = priv->name;
 588         priv->card.dai_link = priv->dai_link;
 589         priv->card.dapm_routes = fsl_asoc_card_is_ac97(priv) ?
 590                                  audio_map_ac97 : audio_map;
 591         priv->card.late_probe = fsl_asoc_card_late_probe;
 592         priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
 593         priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
 594         priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
 595
 596         memcpy(priv->dai_link, fsl_asoc_card_dai,
 597                sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
 598
 599         ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
 600         if (ret) {
 601                 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 602                 goto asrc_fail;
 603         }
 604
 605         /* Normal DAI Link */
 606         priv->dai_link[0].cpu_of_node = cpu_np;
 607         priv->dai_link[0].codec_dai_name = codec_dai_name;
 608
 609         if (!fsl_asoc_card_is_ac97(priv))
 610                 priv->dai_link[0].codec_of_node = codec_np;
 611         else {
 612                 u32 idx;
 613
 614                 ret = of_property_read_u32(cpu_np, "cell-index", &idx);
 615                 if (ret) {
 616                         dev_err(&pdev->dev,
 617                                 "cannot get CPU index property\n");
 618                         goto asrc_fail;
 619                 }
 620
 621                 priv->dai_link[0].codec_name =
 622                                 devm_kasprintf(&pdev->dev, GFP_KERNEL,
 623                                                "ac97-codec.%u",
 624                                                (unsigned int)idx);
 625         }
 626
 627         priv->dai_link[0].platform_of_node = cpu_np;
 628         priv->dai_link[0].dai_fmt = priv->dai_fmt;
 629         priv->card.num_links = 1;
 630
 631         if (asrc_pdev) {
 632                 /* DPCM DAI Links only if ASRC exsits */
 633                 priv->dai_link[1].cpu_of_node = asrc_np;
 634                 priv->dai_link[1].platform_of_node = asrc_np;
 635                 priv->dai_link[2].codec_dai_name = codec_dai_name;
 636                 priv->dai_link[2].codec_of_node = codec_np;
 637                 priv->dai_link[2].codec_name =
 638                                 priv->dai_link[0].codec_name;
 639                 priv->dai_link[2].cpu_of_node = cpu_np;
 640                 priv->dai_link[2].dai_fmt = priv->dai_fmt;
 641                 priv->card.num_links = 3;
 642
 643                 ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
 644                                            &priv->asrc_rate);
 645                 if (ret) {
 646                         dev_err(&pdev->dev, "failed to get output rate\n");
 647                         ret = -EINVAL;
 648                         goto asrc_fail;
 649                 }
 650
 651                 ret = of_property_read_u32(asrc_np, "fsl,asrc-width", &width);
 652                 if (ret) {
 653                         dev_err(&pdev->dev, "failed to get output rate\n");
 654                         ret = -EINVAL;
 655                         goto asrc_fail;
 656                 }
 657
 658                 if (width == 24)
 659                         priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
 660                 else
 661                         priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
 662         }
 663
 664         /* Finish card registering */
 665         platform_set_drvdata(pdev, priv);
 666         snd_soc_card_set_drvdata(&priv->card, priv);
 667
 668         ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
 669         if (ret)
 670                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 671
 672 asrc_fail:
 673         of_node_put(asrc_np);
 674         of_node_put(codec_np);
 675 fail:
 676         of_node_put(cpu_np);
 677
 678         return ret;
 679 }
 680
 681 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
 682         { .compatible = "fsl,imx-audio-ac97", },
 683         { .compatible = "fsl,imx-audio-cs42888", },
 684         { .compatible = "fsl,imx-audio-sgtl5000", },
 685         { .compatible = "fsl,imx-audio-wm8962", },
 686         { .compatible = "fsl,imx-audio-wm8960", },
 687         {}
 688 };
 689 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
 690
 691 static struct platform_driver fsl_asoc_card_driver = {
 692         .probe = fsl_asoc_card_probe,
 693         .driver = {
 694                 .name = "fsl-asoc-card",
 695                 .pm = &snd_soc_pm_ops,
 696                 .of_match_table = fsl_asoc_card_dt_ids,
 697         },
 698 };
 699 module_platform_driver(fsl_asoc_card_driver);
 700
 701 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
 702 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
 703 MODULE_ALIAS("platform:fsl-asoc-card");
 704 MODULE_LICENSE("GPL");