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