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