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

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Freescale Generic ASoC Sound Card driver with ASRC
   4 //
   5 // Copyright (C) 2014 Freescale Semiconductor, Inc.
   6 //
   7 // Author: Nicolin Chen <nicoleotsuka@gmail.com>
   8
   9 #include <linux/clk.h>
  10 #include <linux/i2c.h>
  11 #include <linux/module.h>
  12 #include <linux/of_platform.h>
  13 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
  14 #include <sound/ac97_codec.h>
  15 #endif
  16 #include <sound/pcm_params.h>
  17 #include <sound/soc.h>
  18 #include <sound/jack.h>
  19 #include <sound/simple_card_utils.h>
  20
  21 #include "fsl_esai.h"
  22 #include "fsl_sai.h"
  23 #include "imx-audmux.h"
  24
  25 #include "../codecs/sgtl5000.h"
  26 #include "../codecs/wm8962.h"
  27 #include "../codecs/wm8960.h"
  28
  29 #define CS427x_SYSCLK_MCLK 0
  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  * struct codec_priv - CODEC private data
  39  * @mclk_freq: Clock rate of MCLK
  40  * @mclk_id: MCLK (or main clock) id for set_sysclk()
  41  * @fll_id: FLL (or secordary clock) id for set_sysclk()
  42  * @pll_id: PLL id for set_pll()
  43  */
  44 struct codec_priv {
  45         unsigned long mclk_freq;
  46         u32 mclk_id;
  47         u32 fll_id;
  48         u32 pll_id;
  49 };
  50
  51 /**
  52  * struct cpu_priv - CPU private data
  53  * @sysclk_freq: SYSCLK rates for set_sysclk()
  54  * @sysclk_dir: SYSCLK directions for set_sysclk()
  55  * @sysclk_id: SYSCLK ids for set_sysclk()
  56  * @slot_width: Slot width of each frame
  57  *
  58  * Note: [1] for tx and [0] for rx
  59  */
  60 struct cpu_priv {
  61         unsigned long sysclk_freq[2];
  62         u32 sysclk_dir[2];
  63         u32 sysclk_id[2];
  64         u32 slot_width;
  65 };
  66
  67 /**
  68  * struct fsl_asoc_card_priv - Freescale Generic ASOC card private data
  69  * @dai_link: DAI link structure including normal one and DPCM link
  70  * @hp_jack: Headphone Jack structure
  71  * @mic_jack: Microphone Jack structure
  72  * @pdev: platform device pointer
  73  * @codec_priv: CODEC private data
  74  * @cpu_priv: CPU private data
  75  * @card: ASoC card structure
  76  * @sample_rate: Current sample rate
  77  * @sample_format: Current sample format
  78  * @asrc_rate: ASRC sample rate used by Back-Ends
  79  * @asrc_format: ASRC sample format used by Back-Ends
  80  * @dai_fmt: DAI format between CPU and CODEC
  81  * @name: Card name
  82  */
  83
  84 struct fsl_asoc_card_priv {
  85         struct snd_soc_dai_link dai_link[3];
  86         struct asoc_simple_jack hp_jack;
  87         struct asoc_simple_jack mic_jack;
  88         struct platform_device *pdev;
  89         struct codec_priv codec_priv;
  90         struct cpu_priv cpu_priv;
  91         struct snd_soc_card card;
  92         u32 sample_rate;
  93         snd_pcm_format_t sample_format;
  94         u32 asrc_rate;
  95         snd_pcm_format_t asrc_format;
  96         u32 dai_fmt;
  97         char name[32];
  98 };
  99
 100 /*
 101  * This dapm route map exists for DPCM link only.
 102  * The other routes shall go through Device Tree.
 103  *
 104  * Note: keep all ASRC routes in the second half
 105  *       to drop them easily for non-ASRC cases.
 106  */
 107 static const struct snd_soc_dapm_route audio_map[] = {
 108         /* 1st half -- Normal DAPM routes */
 109         {"Playback",  NULL, "CPU-Playback"},
 110         {"CPU-Capture",  NULL, "Capture"},
 111         /* 2nd half -- ASRC DAPM routes */
 112         {"CPU-Playback",  NULL, "ASRC-Playback"},
 113         {"ASRC-Capture",  NULL, "CPU-Capture"},
 114 };
 115
 116 static const struct snd_soc_dapm_route audio_map_ac97[] = {
 117         /* 1st half -- Normal DAPM routes */
 118         {"Playback",  NULL, "AC97 Playback"},
 119         {"AC97 Capture",  NULL, "Capture"},
 120         /* 2nd half -- ASRC DAPM routes */
 121         {"AC97 Playback",  NULL, "ASRC-Playback"},
 122         {"ASRC-Capture",  NULL, "AC97 Capture"},
 123 };
 124
 125 static const struct snd_soc_dapm_route audio_map_tx[] = {
 126         /* 1st half -- Normal DAPM routes */
 127         {"Playback",  NULL, "CPU-Playback"},
 128         /* 2nd half -- ASRC DAPM routes */
 129         {"CPU-Playback",  NULL, "ASRC-Playback"},
 130 };
 131
 132 /* Add all possible widgets into here without being redundant */
 133 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
 134         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 135         SND_SOC_DAPM_LINE("Line In Jack", NULL),
 136         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 137         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 138         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 139         SND_SOC_DAPM_MIC("AMIC", NULL),
 140         SND_SOC_DAPM_MIC("DMIC", NULL),
 141 };
 142
 143 static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
 144 {
 145         return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
 146 }
 147
 148 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
 149                                    struct snd_pcm_hw_params *params)
 150 {
 151         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 152         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 153         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 154         struct cpu_priv *cpu_priv = &priv->cpu_priv;
 155         struct device *dev = rtd->card->dev;
 156         int ret;
 157
 158         priv->sample_rate = params_rate(params);
 159         priv->sample_format = params_format(params);
 160
 161         /*
 162          * If codec-dai is DAI Master and all configurations are already in the
 163          * set_bias_level(), bypass the remaining settings in hw_params().
 164          * Note: (dai_fmt & CBM_CFM) includes CBM_CFM and CBM_CFS.
 165          */
 166         if ((priv->card.set_bias_level &&
 167              priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) ||
 168             fsl_asoc_card_is_ac97(priv))
 169                 return 0;
 170
 171         /* Specific configurations of DAIs starts from here */
 172         ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), cpu_priv->sysclk_id[tx],
 173                                      cpu_priv->sysclk_freq[tx],
 174                                      cpu_priv->sysclk_dir[tx]);
 175         if (ret && ret != -ENOTSUPP) {
 176                 dev_err(dev, "failed to set sysclk for cpu dai\n");
 177                 return ret;
 178         }
 179
 180         if (cpu_priv->slot_width) {
 181                 ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2,
 182                                                cpu_priv->slot_width);
 183                 if (ret && ret != -ENOTSUPP) {
 184                         dev_err(dev, "failed to set TDM slot for cpu dai\n");
 185                         return ret;
 186                 }
 187         }
 188
 189         return 0;
 190 }
 191
 192 static const struct snd_soc_ops fsl_asoc_card_ops = {
 193         .hw_params = fsl_asoc_card_hw_params,
 194 };
 195
 196 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 197                               struct snd_pcm_hw_params *params)
 198 {
 199         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 200         struct snd_interval *rate;
 201         struct snd_mask *mask;
 202
 203         rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 204         rate->max = rate->min = priv->asrc_rate;
 205
 206         mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 207         snd_mask_none(mask);
 208         snd_mask_set_format(mask, priv->asrc_format);
 209
 210         return 0;
 211 }
 212
 213 SND_SOC_DAILINK_DEFS(hifi,
 214         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 215         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 216         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 217
 218 SND_SOC_DAILINK_DEFS(hifi_fe,
 219         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 220         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 221         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 222
 223 SND_SOC_DAILINK_DEFS(hifi_be,
 224         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 225         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 226         DAILINK_COMP_ARRAY(COMP_DUMMY()));
 227
 228 static struct snd_soc_dai_link fsl_asoc_card_dai[] = {
 229         /* Default ASoC DAI Link*/
 230         {
 231                 .name = "HiFi",
 232                 .stream_name = "HiFi",
 233                 .ops = &fsl_asoc_card_ops,
 234                 SND_SOC_DAILINK_REG(hifi),
 235         },
 236         /* DPCM Link between Front-End and Back-End (Optional) */
 237         {
 238                 .name = "HiFi-ASRC-FE",
 239                 .stream_name = "HiFi-ASRC-FE",
 240                 .dpcm_playback = 1,
 241                 .dpcm_capture = 1,
 242                 .dynamic = 1,
 243                 SND_SOC_DAILINK_REG(hifi_fe),
 244         },
 245         {
 246                 .name = "HiFi-ASRC-BE",
 247                 .stream_name = "HiFi-ASRC-BE",
 248                 .be_hw_params_fixup = be_hw_params_fixup,
 249                 .ops = &fsl_asoc_card_ops,
 250                 .dpcm_playback = 1,
 251                 .dpcm_capture = 1,
 252                 .no_pcm = 1,
 253                 SND_SOC_DAILINK_REG(hifi_be),
 254         },
 255 };
 256
 257 static int fsl_asoc_card_set_bias_level(struct snd_soc_card *card,
 258                                         struct snd_soc_dapm_context *dapm,
 259                                         enum snd_soc_bias_level level)
 260 {
 261         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
 262         struct snd_soc_pcm_runtime *rtd;
 263         struct snd_soc_dai *codec_dai;
 264         struct codec_priv *codec_priv = &priv->codec_priv;
 265         struct device *dev = card->dev;
 266         unsigned int pll_out;
 267         int ret;
 268
 269         rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
 270         codec_dai = asoc_rtd_to_codec(rtd, 0);
 271         if (dapm->dev != codec_dai->dev)
 272                 return 0;
 273
 274         switch (level) {
 275         case SND_SOC_BIAS_PREPARE:
 276                 if (dapm->bias_level != SND_SOC_BIAS_STANDBY)
 277                         break;
 278
 279                 if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
 280                         pll_out = priv->sample_rate * 384;
 281                 else
 282                         pll_out = priv->sample_rate * 256;
 283
 284                 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id,
 285                                           codec_priv->mclk_id,
 286                                           codec_priv->mclk_freq, pll_out);
 287                 if (ret) {
 288                         dev_err(dev, "failed to start FLL: %d\n", ret);
 289                         return ret;
 290                 }
 291
 292                 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->fll_id,
 293                                              pll_out, SND_SOC_CLOCK_IN);
 294                 if (ret && ret != -ENOTSUPP) {
 295                         dev_err(dev, "failed to set SYSCLK: %d\n", ret);
 296                         return ret;
 297                 }
 298                 break;
 299
 300         case SND_SOC_BIAS_STANDBY:
 301                 if (dapm->bias_level != SND_SOC_BIAS_PREPARE)
 302                         break;
 303
 304                 ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 305                                              codec_priv->mclk_freq,
 306                                              SND_SOC_CLOCK_IN);
 307                 if (ret && ret != -ENOTSUPP) {
 308                         dev_err(dev, "failed to switch away from FLL: %d\n", ret);
 309                         return ret;
 310                 }
 311
 312                 ret = snd_soc_dai_set_pll(codec_dai, codec_priv->pll_id, 0, 0, 0);
 313                 if (ret) {
 314                         dev_err(dev, "failed to stop FLL: %d\n", ret);
 315                         return ret;
 316                 }
 317                 break;
 318
 319         default:
 320                 break;
 321         }
 322
 323         return 0;
 324 }
 325
 326 static int fsl_asoc_card_audmux_init(struct device_node *np,
 327                                      struct fsl_asoc_card_priv *priv)
 328 {
 329         struct device *dev = &priv->pdev->dev;
 330         u32 int_ptcr = 0, ext_ptcr = 0;
 331         int int_port, ext_port;
 332         int ret;
 333
 334         ret = of_property_read_u32(np, "mux-int-port", &int_port);
 335         if (ret) {
 336                 dev_err(dev, "mux-int-port missing or invalid\n");
 337                 return ret;
 338         }
 339         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
 340         if (ret) {
 341                 dev_err(dev, "mux-ext-port missing or invalid\n");
 342                 return ret;
 343         }
 344
 345         /*
 346          * The port numbering in the hardware manual starts at 1, while
 347          * the AUDMUX API expects it starts at 0.
 348          */
 349         int_port--;
 350         ext_port--;
 351
 352         /*
 353          * Use asynchronous mode (6 wires) for all cases except AC97.
 354          * If only 4 wires are needed, just set SSI into
 355          * synchronous mode and enable 4 PADs in IOMUX.
 356          */
 357         switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 358         case SND_SOC_DAIFMT_CBM_CFM:
 359                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 360                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 361                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 362                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_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         case SND_SOC_DAIFMT_CBM_CFS:
 369                 int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 370                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 371                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 372                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 373                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 374                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 375                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 376                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 377                 break;
 378         case SND_SOC_DAIFMT_CBS_CFM:
 379                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 380                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 381                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 382                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 383                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 384                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 385                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 386                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 387                 break;
 388         case SND_SOC_DAIFMT_CBS_CFS:
 389                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 390                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 391                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 392                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 393                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 394                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 395                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 396                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 397                 break;
 398         default:
 399                 if (!fsl_asoc_card_is_ac97(priv))
 400                         return -EINVAL;
 401         }
 402
 403         if (fsl_asoc_card_is_ac97(priv)) {
 404                 int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 405                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 406                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 407                 ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 408                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 409                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 410         }
 411
 412         /* Asynchronous mode can not be set along with RCLKDIR */
 413         if (!fsl_asoc_card_is_ac97(priv)) {
 414                 unsigned int pdcr =
 415                                 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
 416
 417                 ret = imx_audmux_v2_configure_port(int_port, 0,
 418                                                    pdcr);
 419                 if (ret) {
 420                         dev_err(dev, "audmux internal port setup failed\n");
 421                         return ret;
 422                 }
 423         }
 424
 425         ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
 426                                            IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 427         if (ret) {
 428                 dev_err(dev, "audmux internal port setup failed\n");
 429                 return ret;
 430         }
 431
 432         if (!fsl_asoc_card_is_ac97(priv)) {
 433                 unsigned int pdcr =
 434                                 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
 435
 436                 ret = imx_audmux_v2_configure_port(ext_port, 0,
 437                                                    pdcr);
 438                 if (ret) {
 439                         dev_err(dev, "audmux external port setup failed\n");
 440                         return ret;
 441                 }
 442         }
 443
 444         ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
 445                                            IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 446         if (ret) {
 447                 dev_err(dev, "audmux external port setup failed\n");
 448                 return ret;
 449         }
 450
 451         return 0;
 452 }
 453
 454 static int hp_jack_event(struct notifier_block *nb, unsigned long event,
 455                          void *data)
 456 {
 457         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 458         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 459
 460         if (event & SND_JACK_HEADPHONE)
 461                 /* Disable speaker if headphone is plugged in */
 462                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
 463         else
 464                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 465
 466         return 0;
 467 }
 468
 469 static struct notifier_block hp_jack_nb = {
 470         .notifier_call = hp_jack_event,
 471 };
 472
 473 static int mic_jack_event(struct notifier_block *nb, unsigned long event,
 474                           void *data)
 475 {
 476         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 477         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 478
 479         if (event & SND_JACK_MICROPHONE)
 480                 /* Disable dmic if microphone is plugged in */
 481                 snd_soc_dapm_disable_pin(dapm, "DMIC");
 482         else
 483                 snd_soc_dapm_enable_pin(dapm, "DMIC");
 484
 485         return 0;
 486 }
 487
 488 static struct notifier_block mic_jack_nb = {
 489         .notifier_call = mic_jack_event,
 490 };
 491
 492 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
 493 {
 494         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
 495         struct snd_soc_pcm_runtime *rtd = list_first_entry(
 496                         &card->rtd_list, struct snd_soc_pcm_runtime, list);
 497         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 498         struct codec_priv *codec_priv = &priv->codec_priv;
 499         struct device *dev = card->dev;
 500         int ret;
 501
 502         if (fsl_asoc_card_is_ac97(priv)) {
 503 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
 504                 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
 505                 struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
 506
 507                 /*
 508                  * Use slots 3/4 for S/PDIF so SSI won't try to enable
 509                  * other slots and send some samples there
 510                  * due to SLOTREQ bits for S/PDIF received from codec
 511                  */
 512                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
 513                                      AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
 514 #endif
 515
 516                 return 0;
 517         }
 518
 519         ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 520                                      codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
 521         if (ret && ret != -ENOTSUPP) {
 522                 dev_err(dev, "failed to set sysclk in %s\n", __func__);
 523                 return ret;
 524         }
 525
 526         return 0;
 527 }
 528
 529 static int fsl_asoc_card_probe(struct platform_device *pdev)
 530 {
 531         struct device_node *cpu_np, *codec_np, *asrc_np;
 532         struct device_node *np = pdev->dev.of_node;
 533         struct platform_device *asrc_pdev = NULL;
 534         struct device_node *bitclkmaster = NULL;
 535         struct device_node *framemaster = NULL;
 536         struct platform_device *cpu_pdev;
 537         struct fsl_asoc_card_priv *priv;
 538         struct device *codec_dev = NULL;
 539         const char *codec_dai_name;
 540         const char *codec_dev_name;
 541         unsigned int daifmt;
 542         u32 width;
 543         int ret;
 544
 545         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 546         if (!priv)
 547                 return -ENOMEM;
 548
 549         cpu_np = of_parse_phandle(np, "audio-cpu", 0);
 550         /* Give a chance to old DT binding */
 551         if (!cpu_np)
 552                 cpu_np = of_parse_phandle(np, "ssi-controller", 0);
 553         if (!cpu_np) {
 554                 dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
 555                 ret = -EINVAL;
 556                 goto fail;
 557         }
 558
 559         cpu_pdev = of_find_device_by_node(cpu_np);
 560         if (!cpu_pdev) {
 561                 dev_err(&pdev->dev, "failed to find CPU DAI device\n");
 562                 ret = -EINVAL;
 563                 goto fail;
 564         }
 565
 566         codec_np = of_parse_phandle(np, "audio-codec", 0);
 567         if (codec_np) {
 568                 struct platform_device *codec_pdev;
 569                 struct i2c_client *codec_i2c;
 570
 571                 codec_i2c = of_find_i2c_device_by_node(codec_np);
 572                 if (codec_i2c) {
 573                         codec_dev = &codec_i2c->dev;
 574                         codec_dev_name = codec_i2c->name;
 575                 }
 576                 if (!codec_dev) {
 577                         codec_pdev = of_find_device_by_node(codec_np);
 578                         if (codec_pdev) {
 579                                 codec_dev = &codec_pdev->dev;
 580                                 codec_dev_name = codec_pdev->name;
 581                         }
 582                 }
 583         }
 584
 585         asrc_np = of_parse_phandle(np, "audio-asrc", 0);
 586         if (asrc_np)
 587                 asrc_pdev = of_find_device_by_node(asrc_np);
 588
 589         /* Get the MCLK rate only, and leave it controlled by CODEC drivers */
 590         if (codec_dev) {
 591                 struct clk *codec_clk = clk_get(codec_dev, NULL);
 592
 593                 if (!IS_ERR(codec_clk)) {
 594                         priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
 595                         clk_put(codec_clk);
 596                 }
 597         }
 598
 599         /* Default sample rate and format, will be updated in hw_params() */
 600         priv->sample_rate = 44100;
 601         priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
 602
 603         /* Assign a default DAI format, and allow each card to overwrite it */
 604         priv->dai_fmt = DAI_FMT_BASE;
 605
 606         memcpy(priv->dai_link, fsl_asoc_card_dai,
 607                sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
 608
 609         priv->card.dapm_routes = audio_map;
 610         priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
 611         /* Diversify the card configurations */
 612         if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
 613                 codec_dai_name = "cs42888";
 614                 priv->card.set_bias_level = NULL;
 615                 priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
 616                 priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
 617                 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
 618                 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
 619                 priv->cpu_priv.slot_width = 32;
 620                 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 621         } else if (of_device_is_compatible(np, "fsl,imx-audio-cs427x")) {
 622                 codec_dai_name = "cs4271-hifi";
 623                 priv->codec_priv.mclk_id = CS427x_SYSCLK_MCLK;
 624                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 625         } else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
 626                 codec_dai_name = "sgtl5000";
 627                 priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
 628                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 629         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
 630                 codec_dai_name = "wm8962";
 631                 priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 632                 priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
 633                 priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
 634                 priv->codec_priv.pll_id = WM8962_FLL;
 635                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 636         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
 637                 codec_dai_name = "wm8960-hifi";
 638                 priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 639                 priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
 640                 priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
 641                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 642         } else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
 643                 codec_dai_name = "ac97-hifi";
 644                 priv->card.set_bias_level = NULL;
 645                 priv->dai_fmt = SND_SOC_DAIFMT_AC97;
 646                 priv->card.dapm_routes = audio_map_ac97;
 647                 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_ac97);
 648         } else if (of_device_is_compatible(np, "fsl,imx-audio-mqs")) {
 649                 codec_dai_name = "fsl-mqs-dai";
 650                 priv->card.set_bias_level = NULL;
 651                 priv->dai_fmt = SND_SOC_DAIFMT_LEFT_J |
 652                                 SND_SOC_DAIFMT_CBS_CFS |
 653                                 SND_SOC_DAIFMT_NB_NF;
 654                 priv->dai_link[1].dpcm_capture = 0;
 655                 priv->dai_link[2].dpcm_capture = 0;
 656                 priv->card.dapm_routes = audio_map_tx;
 657                 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
 658         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8524")) {
 659                 codec_dai_name = "wm8524-hifi";
 660                 priv->card.set_bias_level = NULL;
 661                 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 662                 priv->dai_link[1].dpcm_capture = 0;
 663                 priv->dai_link[2].dpcm_capture = 0;
 664                 priv->cpu_priv.slot_width = 32;
 665                 priv->card.dapm_routes = audio_map_tx;
 666                 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
 667         } else {
 668                 dev_err(&pdev->dev, "unknown Device Tree compatible\n");
 669                 ret = -EINVAL;
 670                 goto asrc_fail;
 671         }
 672
 673         /* Format info from DT is optional. */
 674         daifmt = snd_soc_of_parse_daifmt(np, NULL,
 675                                          &bitclkmaster, &framemaster);
 676         daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
 677         if (bitclkmaster || framemaster) {
 678                 if (codec_np == bitclkmaster)
 679                         daifmt |= (codec_np == framemaster) ?
 680                                 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
 681                 else
 682                         daifmt |= (codec_np == framemaster) ?
 683                                 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
 684
 685                 /* Override dai_fmt with value from DT */
 686                 priv->dai_fmt = daifmt;
 687         }
 688
 689         /* Change direction according to format */
 690         if (priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) {
 691                 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_IN;
 692                 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_IN;
 693         }
 694
 695         of_node_put(bitclkmaster);
 696         of_node_put(framemaster);
 697
 698         if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
 699                 dev_err(&pdev->dev, "failed to find codec device\n");
 700                 ret = -EPROBE_DEFER;
 701                 goto asrc_fail;
 702         }
 703
 704         /* Common settings for corresponding Freescale CPU DAI driver */
 705         if (of_node_name_eq(cpu_np, "ssi")) {
 706                 /* Only SSI needs to configure AUDMUX */
 707                 ret = fsl_asoc_card_audmux_init(np, priv);
 708                 if (ret) {
 709                         dev_err(&pdev->dev, "failed to init audmux\n");
 710                         goto asrc_fail;
 711                 }
 712         } else if (of_node_name_eq(cpu_np, "esai")) {
 713                 priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
 714                 priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
 715         } else if (of_node_name_eq(cpu_np, "sai")) {
 716                 priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
 717                 priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
 718         }
 719
 720         /* Initialize sound card */
 721         priv->pdev = pdev;
 722         priv->card.dev = &pdev->dev;
 723         ret = snd_soc_of_parse_card_name(&priv->card, "model");
 724         if (ret) {
 725                 snprintf(priv->name, sizeof(priv->name), "%s-audio",
 726                          fsl_asoc_card_is_ac97(priv) ? "ac97" : codec_dev_name);
 727                 priv->card.name = priv->name;
 728         }
 729         priv->card.dai_link = priv->dai_link;
 730         priv->card.late_probe = fsl_asoc_card_late_probe;
 731         priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
 732         priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
 733
 734         /* Drop the second half of DAPM routes -- ASRC */
 735         if (!asrc_pdev)
 736                 priv->card.num_dapm_routes /= 2;
 737
 738         if (of_property_read_bool(np, "audio-routing")) {
 739                 ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
 740                 if (ret) {
 741                         dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 742                         goto asrc_fail;
 743                 }
 744         }
 745
 746         /* Normal DAI Link */
 747         priv->dai_link[0].cpus->of_node = cpu_np;
 748         priv->dai_link[0].codecs->dai_name = codec_dai_name;
 749
 750         if (!fsl_asoc_card_is_ac97(priv))
 751                 priv->dai_link[0].codecs->of_node = codec_np;
 752         else {
 753                 u32 idx;
 754
 755                 ret = of_property_read_u32(cpu_np, "cell-index", &idx);
 756                 if (ret) {
 757                         dev_err(&pdev->dev,
 758                                 "cannot get CPU index property\n");
 759                         goto asrc_fail;
 760                 }
 761
 762                 priv->dai_link[0].codecs->name =
 763                                 devm_kasprintf(&pdev->dev, GFP_KERNEL,
 764                                                "ac97-codec.%u",
 765                                                (unsigned int)idx);
 766                 if (!priv->dai_link[0].codecs->name) {
 767                         ret = -ENOMEM;
 768                         goto asrc_fail;
 769                 }
 770         }
 771
 772         priv->dai_link[0].platforms->of_node = cpu_np;
 773         priv->dai_link[0].dai_fmt = priv->dai_fmt;
 774         priv->card.num_links = 1;
 775
 776         if (asrc_pdev) {
 777                 /* DPCM DAI Links only if ASRC exsits */
 778                 priv->dai_link[1].cpus->of_node = asrc_np;
 779                 priv->dai_link[1].platforms->of_node = asrc_np;
 780                 priv->dai_link[2].codecs->dai_name = codec_dai_name;
 781                 priv->dai_link[2].codecs->of_node = codec_np;
 782                 priv->dai_link[2].codecs->name =
 783                                 priv->dai_link[0].codecs->name;
 784                 priv->dai_link[2].cpus->of_node = cpu_np;
 785                 priv->dai_link[2].dai_fmt = priv->dai_fmt;
 786                 priv->card.num_links = 3;
 787
 788                 ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
 789                                            &priv->asrc_rate);
 790                 if (ret) {
 791                         dev_err(&pdev->dev, "failed to get output rate\n");
 792                         ret = -EINVAL;
 793                         goto asrc_fail;
 794                 }
 795
 796                 ret = of_property_read_u32(asrc_np, "fsl,asrc-format",
 797                                            &priv->asrc_format);
 798                 if (ret) {
 799                         /* Fallback to old binding; translate to asrc_format */
 800                         ret = of_property_read_u32(asrc_np, "fsl,asrc-width",
 801                                                    &width);
 802                         if (ret) {
 803                                 dev_err(&pdev->dev,
 804                                         "failed to decide output format\n");
 805                                 goto asrc_fail;
 806                         }
 807
 808                         if (width == 24)
 809                                 priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
 810                         else
 811                                 priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
 812                 }
 813         }
 814
 815         /* Finish card registering */
 816         platform_set_drvdata(pdev, priv);
 817         snd_soc_card_set_drvdata(&priv->card, priv);
 818
 819         ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
 820         if (ret) {
 821                 if (ret != -EPROBE_DEFER)
 822                         dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 823                 goto asrc_fail;
 824         }
 825
 826         /*
 827          * Properties "hp-det-gpio" and "mic-det-gpio" are optional, and
 828          * asoc_simple_init_jack uses these properties for creating
 829          * Headphone Jack and Microphone Jack.
 830          *
 831          * The notifier is initialized in snd_soc_card_jack_new(), then
 832          * snd_soc_jack_notifier_register can be called.
 833          */
 834         if (of_property_read_bool(np, "hp-det-gpio")) {
 835                 ret = asoc_simple_init_jack(&priv->card, &priv->hp_jack,
 836                                             1, NULL, "Headphone Jack");
 837                 if (ret)
 838                         goto asrc_fail;
 839
 840                 snd_soc_jack_notifier_register(&priv->hp_jack.jack, &hp_jack_nb);
 841         }
 842
 843         if (of_property_read_bool(np, "mic-det-gpio")) {
 844                 ret = asoc_simple_init_jack(&priv->card, &priv->mic_jack,
 845                                             0, NULL, "Mic Jack");
 846                 if (ret)
 847                         goto asrc_fail;
 848
 849                 snd_soc_jack_notifier_register(&priv->mic_jack.jack, &mic_jack_nb);
 850         }
 851
 852 asrc_fail:
 853         of_node_put(asrc_np);
 854         of_node_put(codec_np);
 855         put_device(&cpu_pdev->dev);
 856 fail:
 857         of_node_put(cpu_np);
 858
 859         return ret;
 860 }
 861
 862 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
 863         { .compatible = "fsl,imx-audio-ac97", },
 864         { .compatible = "fsl,imx-audio-cs42888", },
 865         { .compatible = "fsl,imx-audio-cs427x", },
 866         { .compatible = "fsl,imx-audio-sgtl5000", },
 867         { .compatible = "fsl,imx-audio-wm8962", },
 868         { .compatible = "fsl,imx-audio-wm8960", },
 869         { .compatible = "fsl,imx-audio-mqs", },
 870         { .compatible = "fsl,imx-audio-wm8524", },
 871         {}
 872 };
 873 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
 874
 875 static struct platform_driver fsl_asoc_card_driver = {
 876         .probe = fsl_asoc_card_probe,
 877         .driver = {
 878                 .name = "fsl-asoc-card",
 879                 .pm = &snd_soc_pm_ops,
 880                 .of_match_table = fsl_asoc_card_dt_ids,
 881         },
 882 };
 883 module_platform_driver(fsl_asoc_card_driver);
 884
 885 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
 886 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
 887 MODULE_ALIAS("platform:fsl-asoc-card");
 888 MODULE_LICENSE("GPL");