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 #include "../codecs/wm8994.h"
  29
  30 #define CS427x_SYSCLK_MCLK 0
  31
  32 #define RX 0
  33 #define TX 1
  34
  35 /* Default DAI format without Master and Slave flag */
  36 #define DAI_FMT_BASE (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF)
  37
  38 /**
  39  * struct codec_priv - CODEC private data
  40  * @mclk_freq: Clock rate of MCLK
  41  * @free_freq: Clock rate of MCLK for hw_free()
  42  * @mclk_id: MCLK (or main clock) id for set_sysclk()
  43  * @fll_id: FLL (or secordary clock) id for set_sysclk()
  44  * @pll_id: PLL id for set_pll()
  45  */
  46 struct codec_priv {
  47         unsigned long mclk_freq;
  48         unsigned long free_freq;
  49         u32 mclk_id;
  50         u32 fll_id;
  51         u32 pll_id;
  52 };
  53
  54 /**
  55  * struct cpu_priv - CPU private data
  56  * @sysclk_freq: SYSCLK rates for set_sysclk()
  57  * @sysclk_dir: SYSCLK directions for set_sysclk()
  58  * @sysclk_id: SYSCLK ids for set_sysclk()
  59  * @slot_width: Slot width of each frame
  60  *
  61  * Note: [1] for tx and [0] for rx
  62  */
  63 struct cpu_priv {
  64         unsigned long sysclk_freq[2];
  65         u32 sysclk_dir[2];
  66         u32 sysclk_id[2];
  67         u32 slot_width;
  68 };
  69
  70 /**
  71  * struct fsl_asoc_card_priv - Freescale Generic ASOC card private data
  72  * @dai_link: DAI link structure including normal one and DPCM link
  73  * @hp_jack: Headphone Jack structure
  74  * @mic_jack: Microphone Jack structure
  75  * @pdev: platform device pointer
  76  * @codec_priv: CODEC private data
  77  * @cpu_priv: CPU private data
  78  * @card: ASoC card structure
  79  * @streams: Mask of current active streams
  80  * @sample_rate: Current sample rate
  81  * @sample_format: Current sample format
  82  * @asrc_rate: ASRC sample rate used by Back-Ends
  83  * @asrc_format: ASRC sample format used by Back-Ends
  84  * @dai_fmt: DAI format between CPU and CODEC
  85  * @name: Card name
  86  */
  87
  88 struct fsl_asoc_card_priv {
  89         struct snd_soc_dai_link dai_link[3];
  90         struct asoc_simple_jack hp_jack;
  91         struct asoc_simple_jack mic_jack;
  92         struct platform_device *pdev;
  93         struct codec_priv codec_priv;
  94         struct cpu_priv cpu_priv;
  95         struct snd_soc_card card;
  96         u8 streams;
  97         u32 sample_rate;
  98         snd_pcm_format_t sample_format;
  99         u32 asrc_rate;
 100         snd_pcm_format_t asrc_format;
 101         u32 dai_fmt;
 102         char name[32];
 103 };
 104
 105 /*
 106  * This dapm route map exists for DPCM link only.
 107  * The other routes shall go through Device Tree.
 108  *
 109  * Note: keep all ASRC routes in the second half
 110  *       to drop them easily for non-ASRC cases.
 111  */
 112 static const struct snd_soc_dapm_route audio_map[] = {
 113         /* 1st half -- Normal DAPM routes */
 114         {"Playback",  NULL, "CPU-Playback"},
 115         {"CPU-Capture",  NULL, "Capture"},
 116         /* 2nd half -- ASRC DAPM routes */
 117         {"CPU-Playback",  NULL, "ASRC-Playback"},
 118         {"ASRC-Capture",  NULL, "CPU-Capture"},
 119 };
 120
 121 static const struct snd_soc_dapm_route audio_map_ac97[] = {
 122         /* 1st half -- Normal DAPM routes */
 123         {"Playback",  NULL, "AC97 Playback"},
 124         {"AC97 Capture",  NULL, "Capture"},
 125         /* 2nd half -- ASRC DAPM routes */
 126         {"AC97 Playback",  NULL, "ASRC-Playback"},
 127         {"ASRC-Capture",  NULL, "AC97 Capture"},
 128 };
 129
 130 static const struct snd_soc_dapm_route audio_map_tx[] = {
 131         /* 1st half -- Normal DAPM routes */
 132         {"Playback",  NULL, "CPU-Playback"},
 133         /* 2nd half -- ASRC DAPM routes */
 134         {"CPU-Playback",  NULL, "ASRC-Playback"},
 135 };
 136
 137 static const struct snd_soc_dapm_route audio_map_rx[] = {
 138         /* 1st half -- Normal DAPM routes */
 139         {"CPU-Capture",  NULL, "Capture"},
 140         /* 2nd half -- ASRC DAPM routes */
 141         {"ASRC-Capture",  NULL, "CPU-Capture"},
 142 };
 143
 144 /* Add all possible widgets into here without being redundant */
 145 static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
 146         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
 147         SND_SOC_DAPM_LINE("Line In Jack", NULL),
 148         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 149         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 150         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 151         SND_SOC_DAPM_MIC("AMIC", NULL),
 152         SND_SOC_DAPM_MIC("DMIC", NULL),
 153 };
 154
 155 static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
 156 {
 157         return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
 158 }
 159
 160 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
 161                                    struct snd_pcm_hw_params *params)
 162 {
 163         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 164         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 165         bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 166         struct codec_priv *codec_priv = &priv->codec_priv;
 167         struct cpu_priv *cpu_priv = &priv->cpu_priv;
 168         struct device *dev = rtd->card->dev;
 169         unsigned int pll_out;
 170         int ret;
 171
 172         priv->sample_rate = params_rate(params);
 173         priv->sample_format = params_format(params);
 174         priv->streams |= BIT(substream->stream);
 175
 176         if (fsl_asoc_card_is_ac97(priv))
 177                 return 0;
 178
 179         /* Specific configurations of DAIs starts from here */
 180         ret = snd_soc_dai_set_sysclk(asoc_rtd_to_cpu(rtd, 0), cpu_priv->sysclk_id[tx],
 181                                      cpu_priv->sysclk_freq[tx],
 182                                      cpu_priv->sysclk_dir[tx]);
 183         if (ret && ret != -ENOTSUPP) {
 184                 dev_err(dev, "failed to set sysclk for cpu dai\n");
 185                 goto fail;
 186         }
 187
 188         if (cpu_priv->slot_width) {
 189                 ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2,
 190                                                cpu_priv->slot_width);
 191                 if (ret && ret != -ENOTSUPP) {
 192                         dev_err(dev, "failed to set TDM slot for cpu dai\n");
 193                         goto fail;
 194                 }
 195         }
 196
 197         /* Specific configuration for PLL */
 198         if (codec_priv->pll_id && codec_priv->fll_id) {
 199                 if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE)
 200                         pll_out = priv->sample_rate * 384;
 201                 else
 202                         pll_out = priv->sample_rate * 256;
 203
 204                 ret = snd_soc_dai_set_pll(asoc_rtd_to_codec(rtd, 0),
 205                                           codec_priv->pll_id,
 206                                           codec_priv->mclk_id,
 207                                           codec_priv->mclk_freq, pll_out);
 208                 if (ret) {
 209                         dev_err(dev, "failed to start FLL: %d\n", ret);
 210                         goto fail;
 211                 }
 212
 213                 ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0),
 214                                              codec_priv->fll_id,
 215                                              pll_out, SND_SOC_CLOCK_IN);
 216
 217                 if (ret && ret != -ENOTSUPP) {
 218                         dev_err(dev, "failed to set SYSCLK: %d\n", ret);
 219                         goto fail;
 220                 }
 221         }
 222
 223         return 0;
 224
 225 fail:
 226         priv->streams &= ~BIT(substream->stream);
 227         return ret;
 228 }
 229
 230 static int fsl_asoc_card_hw_free(struct snd_pcm_substream *substream)
 231 {
 232         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 233         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 234         struct codec_priv *codec_priv = &priv->codec_priv;
 235         struct device *dev = rtd->card->dev;
 236         int ret;
 237
 238         priv->streams &= ~BIT(substream->stream);
 239
 240         if (!priv->streams && codec_priv->pll_id && codec_priv->fll_id) {
 241                 /* Force freq to be free_freq to avoid error message in codec */
 242                 ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0),
 243                                              codec_priv->mclk_id,
 244                                              codec_priv->free_freq,
 245                                              SND_SOC_CLOCK_IN);
 246                 if (ret) {
 247                         dev_err(dev, "failed to switch away from FLL: %d\n", ret);
 248                         return ret;
 249                 }
 250
 251                 ret = snd_soc_dai_set_pll(asoc_rtd_to_codec(rtd, 0),
 252                                           codec_priv->pll_id, 0, 0, 0);
 253                 if (ret && ret != -ENOTSUPP) {
 254                         dev_err(dev, "failed to stop FLL: %d\n", ret);
 255                         return ret;
 256                 }
 257         }
 258
 259         return 0;
 260 }
 261
 262 static const struct snd_soc_ops fsl_asoc_card_ops = {
 263         .hw_params = fsl_asoc_card_hw_params,
 264         .hw_free = fsl_asoc_card_hw_free,
 265 };
 266
 267 static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 268                               struct snd_pcm_hw_params *params)
 269 {
 270         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 271         struct snd_interval *rate;
 272         struct snd_mask *mask;
 273
 274         rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
 275         rate->max = rate->min = priv->asrc_rate;
 276
 277         mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 278         snd_mask_none(mask);
 279         snd_mask_set_format(mask, priv->asrc_format);
 280
 281         return 0;
 282 }
 283
 284 SND_SOC_DAILINK_DEFS(hifi,
 285         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 286         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 287         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 288
 289 SND_SOC_DAILINK_DEFS(hifi_fe,
 290         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 291         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 292         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 293
 294 SND_SOC_DAILINK_DEFS(hifi_be,
 295         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 296         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 297         DAILINK_COMP_ARRAY(COMP_DUMMY()));
 298
 299 static struct snd_soc_dai_link fsl_asoc_card_dai[] = {
 300         /* Default ASoC DAI Link*/
 301         {
 302                 .name = "HiFi",
 303                 .stream_name = "HiFi",
 304                 .ops = &fsl_asoc_card_ops,
 305                 SND_SOC_DAILINK_REG(hifi),
 306         },
 307         /* DPCM Link between Front-End and Back-End (Optional) */
 308         {
 309                 .name = "HiFi-ASRC-FE",
 310                 .stream_name = "HiFi-ASRC-FE",
 311                 .dpcm_playback = 1,
 312                 .dpcm_capture = 1,
 313                 .dynamic = 1,
 314                 SND_SOC_DAILINK_REG(hifi_fe),
 315         },
 316         {
 317                 .name = "HiFi-ASRC-BE",
 318                 .stream_name = "HiFi-ASRC-BE",
 319                 .be_hw_params_fixup = be_hw_params_fixup,
 320                 .ops = &fsl_asoc_card_ops,
 321                 .dpcm_playback = 1,
 322                 .dpcm_capture = 1,
 323                 .no_pcm = 1,
 324                 SND_SOC_DAILINK_REG(hifi_be),
 325         },
 326 };
 327
 328 static int fsl_asoc_card_audmux_init(struct device_node *np,
 329                                      struct fsl_asoc_card_priv *priv)
 330 {
 331         struct device *dev = &priv->pdev->dev;
 332         u32 int_ptcr = 0, ext_ptcr = 0;
 333         int int_port, ext_port;
 334         int ret;
 335
 336         ret = of_property_read_u32(np, "mux-int-port", &int_port);
 337         if (ret) {
 338                 dev_err(dev, "mux-int-port missing or invalid\n");
 339                 return ret;
 340         }
 341         ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
 342         if (ret) {
 343                 dev_err(dev, "mux-ext-port missing or invalid\n");
 344                 return ret;
 345         }
 346
 347         /*
 348          * The port numbering in the hardware manual starts at 1, while
 349          * the AUDMUX API expects it starts at 0.
 350          */
 351         int_port--;
 352         ext_port--;
 353
 354         /*
 355          * Use asynchronous mode (6 wires) for all cases except AC97.
 356          * If only 4 wires are needed, just set SSI into
 357          * synchronous mode and enable 4 PADs in IOMUX.
 358          */
 359         switch (priv->dai_fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 360         case SND_SOC_DAIFMT_CBM_CFM:
 361                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 362                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 363                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 364                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 365                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 366                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 367                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 368                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 369                 break;
 370         case SND_SOC_DAIFMT_CBM_CFS:
 371                 int_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | ext_port) |
 372                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 373                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 374                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 375                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 376                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 377                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 378                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 379                 break;
 380         case SND_SOC_DAIFMT_CBS_CFM:
 381                 int_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | ext_port) |
 382                            IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
 383                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 384                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 385                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 386                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 387                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 388                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 389                 break;
 390         case SND_SOC_DAIFMT_CBS_CFS:
 391                 ext_ptcr = IMX_AUDMUX_V2_PTCR_RFSEL(8 | int_port) |
 392                            IMX_AUDMUX_V2_PTCR_RCSEL(8 | int_port) |
 393                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 394                            IMX_AUDMUX_V2_PTCR_TCSEL(int_port) |
 395                            IMX_AUDMUX_V2_PTCR_RFSDIR |
 396                            IMX_AUDMUX_V2_PTCR_RCLKDIR |
 397                            IMX_AUDMUX_V2_PTCR_TFSDIR |
 398                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 399                 break;
 400         default:
 401                 if (!fsl_asoc_card_is_ac97(priv))
 402                         return -EINVAL;
 403         }
 404
 405         if (fsl_asoc_card_is_ac97(priv)) {
 406                 int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 407                            IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
 408                            IMX_AUDMUX_V2_PTCR_TCLKDIR;
 409                 ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
 410                            IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
 411                            IMX_AUDMUX_V2_PTCR_TFSDIR;
 412         }
 413
 414         /* Asynchronous mode can not be set along with RCLKDIR */
 415         if (!fsl_asoc_card_is_ac97(priv)) {
 416                 unsigned int pdcr =
 417                                 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
 418
 419                 ret = imx_audmux_v2_configure_port(int_port, 0,
 420                                                    pdcr);
 421                 if (ret) {
 422                         dev_err(dev, "audmux internal port setup failed\n");
 423                         return ret;
 424                 }
 425         }
 426
 427         ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
 428                                            IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
 429         if (ret) {
 430                 dev_err(dev, "audmux internal port setup failed\n");
 431                 return ret;
 432         }
 433
 434         if (!fsl_asoc_card_is_ac97(priv)) {
 435                 unsigned int pdcr =
 436                                 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
 437
 438                 ret = imx_audmux_v2_configure_port(ext_port, 0,
 439                                                    pdcr);
 440                 if (ret) {
 441                         dev_err(dev, "audmux external port setup failed\n");
 442                         return ret;
 443                 }
 444         }
 445
 446         ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
 447                                            IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
 448         if (ret) {
 449                 dev_err(dev, "audmux external port setup failed\n");
 450                 return ret;
 451         }
 452
 453         return 0;
 454 }
 455
 456 static int hp_jack_event(struct notifier_block *nb, unsigned long event,
 457                          void *data)
 458 {
 459         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 460         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 461
 462         if (event & SND_JACK_HEADPHONE)
 463                 /* Disable speaker if headphone is plugged in */
 464                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
 465         else
 466                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 467
 468         return 0;
 469 }
 470
 471 static struct notifier_block hp_jack_nb = {
 472         .notifier_call = hp_jack_event,
 473 };
 474
 475 static int mic_jack_event(struct notifier_block *nb, unsigned long event,
 476                           void *data)
 477 {
 478         struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
 479         struct snd_soc_dapm_context *dapm = &jack->card->dapm;
 480
 481         if (event & SND_JACK_MICROPHONE)
 482                 /* Disable dmic if microphone is plugged in */
 483                 snd_soc_dapm_disable_pin(dapm, "DMIC");
 484         else
 485                 snd_soc_dapm_enable_pin(dapm, "DMIC");
 486
 487         return 0;
 488 }
 489
 490 static struct notifier_block mic_jack_nb = {
 491         .notifier_call = mic_jack_event,
 492 };
 493
 494 static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
 495 {
 496         struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(card);
 497         struct snd_soc_pcm_runtime *rtd = list_first_entry(
 498                         &card->rtd_list, struct snd_soc_pcm_runtime, list);
 499         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
 500         struct codec_priv *codec_priv = &priv->codec_priv;
 501         struct device *dev = card->dev;
 502         int ret;
 503
 504         if (fsl_asoc_card_is_ac97(priv)) {
 505 #if IS_ENABLED(CONFIG_SND_AC97_CODEC)
 506                 struct snd_soc_component *component = asoc_rtd_to_codec(rtd, 0)->component;
 507                 struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
 508
 509                 /*
 510                  * Use slots 3/4 for S/PDIF so SSI won't try to enable
 511                  * other slots and send some samples there
 512                  * due to SLOTREQ bits for S/PDIF received from codec
 513                  */
 514                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
 515                                      AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
 516 #endif
 517
 518                 return 0;
 519         }
 520
 521         ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 522                                      codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
 523         if (ret && ret != -ENOTSUPP) {
 524                 dev_err(dev, "failed to set sysclk in %s\n", __func__);
 525                 return ret;
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int fsl_asoc_card_probe(struct platform_device *pdev)
 532 {
 533         struct device_node *cpu_np, *codec_np, *asrc_np;
 534         struct device_node *np = pdev->dev.of_node;
 535         struct platform_device *asrc_pdev = NULL;
 536         struct device_node *bitclkmaster = NULL;
 537         struct device_node *framemaster = NULL;
 538         struct platform_device *cpu_pdev;
 539         struct fsl_asoc_card_priv *priv;
 540         struct device *codec_dev = NULL;
 541         const char *codec_dai_name;
 542         const char *codec_dev_name;
 543         unsigned int daifmt;
 544         u32 width;
 545         int ret;
 546
 547         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 548         if (!priv)
 549                 return -ENOMEM;
 550
 551         cpu_np = of_parse_phandle(np, "audio-cpu", 0);
 552         /* Give a chance to old DT binding */
 553         if (!cpu_np)
 554                 cpu_np = of_parse_phandle(np, "ssi-controller", 0);
 555         if (!cpu_np) {
 556                 dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
 557                 ret = -EINVAL;
 558                 goto fail;
 559         }
 560
 561         cpu_pdev = of_find_device_by_node(cpu_np);
 562         if (!cpu_pdev) {
 563                 dev_err(&pdev->dev, "failed to find CPU DAI device\n");
 564                 ret = -EINVAL;
 565                 goto fail;
 566         }
 567
 568         codec_np = of_parse_phandle(np, "audio-codec", 0);
 569         if (codec_np) {
 570                 struct platform_device *codec_pdev;
 571                 struct i2c_client *codec_i2c;
 572
 573                 codec_i2c = of_find_i2c_device_by_node(codec_np);
 574                 if (codec_i2c) {
 575                         codec_dev = &codec_i2c->dev;
 576                         codec_dev_name = codec_i2c->name;
 577                 }
 578                 if (!codec_dev) {
 579                         codec_pdev = of_find_device_by_node(codec_np);
 580                         if (codec_pdev) {
 581                                 codec_dev = &codec_pdev->dev;
 582                                 codec_dev_name = codec_pdev->name;
 583                         }
 584                 }
 585         }
 586
 587         asrc_np = of_parse_phandle(np, "audio-asrc", 0);
 588         if (asrc_np)
 589                 asrc_pdev = of_find_device_by_node(asrc_np);
 590
 591         /* Get the MCLK rate only, and leave it controlled by CODEC drivers */
 592         if (codec_dev) {
 593                 struct clk *codec_clk = clk_get(codec_dev, NULL);
 594
 595                 if (!IS_ERR(codec_clk)) {
 596                         priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
 597                         clk_put(codec_clk);
 598                 }
 599         }
 600
 601         /* Default sample rate and format, will be updated in hw_params() */
 602         priv->sample_rate = 44100;
 603         priv->sample_format = SNDRV_PCM_FORMAT_S16_LE;
 604
 605         /* Assign a default DAI format, and allow each card to overwrite it */
 606         priv->dai_fmt = DAI_FMT_BASE;
 607
 608         memcpy(priv->dai_link, fsl_asoc_card_dai,
 609                sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
 610
 611         priv->card.dapm_routes = audio_map;
 612         priv->card.num_dapm_routes = ARRAY_SIZE(audio_map);
 613         /* Diversify the card configurations */
 614         if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
 615                 codec_dai_name = "cs42888";
 616                 priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
 617                 priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
 618                 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_OUT;
 619                 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_OUT;
 620                 priv->cpu_priv.slot_width = 32;
 621                 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 622         } else if (of_device_is_compatible(np, "fsl,imx-audio-cs427x")) {
 623                 codec_dai_name = "cs4271-hifi";
 624                 priv->codec_priv.mclk_id = CS427x_SYSCLK_MCLK;
 625                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 626         } else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
 627                 codec_dai_name = "sgtl5000";
 628                 priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
 629                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 630         } else if (of_device_is_compatible(np, "fsl,imx-audio-tlv320aic32x4")) {
 631                 codec_dai_name = "tlv320aic32x4-hifi";
 632                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 633         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
 634                 codec_dai_name = "wm8962";
 635                 priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
 636                 priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
 637                 priv->codec_priv.pll_id = WM8962_FLL;
 638                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 639         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
 640                 codec_dai_name = "wm8960-hifi";
 641                 priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
 642                 priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
 643                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 644         } else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
 645                 codec_dai_name = "ac97-hifi";
 646                 priv->dai_fmt = SND_SOC_DAIFMT_AC97;
 647                 priv->card.dapm_routes = audio_map_ac97;
 648                 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_ac97);
 649         } else if (of_device_is_compatible(np, "fsl,imx-audio-mqs")) {
 650                 codec_dai_name = "fsl-mqs-dai";
 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->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 661                 priv->dai_link[1].dpcm_capture = 0;
 662                 priv->dai_link[2].dpcm_capture = 0;
 663                 priv->cpu_priv.slot_width = 32;
 664                 priv->card.dapm_routes = audio_map_tx;
 665                 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_tx);
 666         } else if (of_device_is_compatible(np, "fsl,imx-audio-si476x")) {
 667                 codec_dai_name = "si476x-codec";
 668                 priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 669                 priv->card.dapm_routes = audio_map_rx;
 670                 priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_rx);
 671         } else if (of_device_is_compatible(np, "fsl,imx-audio-wm8958")) {
 672                 codec_dai_name = "wm8994-aif1";
 673                 priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 674                 priv->codec_priv.mclk_id = WM8994_FLL_SRC_MCLK1;
 675                 priv->codec_priv.fll_id = WM8994_SYSCLK_FLL1;
 676                 priv->codec_priv.pll_id = WM8994_FLL1;
 677                 priv->codec_priv.free_freq = priv->codec_priv.mclk_freq;
 678                 priv->card.dapm_routes = NULL;
 679                 priv->card.num_dapm_routes = 0;
 680         } else {
 681                 dev_err(&pdev->dev, "unknown Device Tree compatible\n");
 682                 ret = -EINVAL;
 683                 goto asrc_fail;
 684         }
 685
 686         /* Format info from DT is optional. */
 687         daifmt = snd_soc_of_parse_daifmt(np, NULL,
 688                                          &bitclkmaster, &framemaster);
 689         daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
 690         if (bitclkmaster || framemaster) {
 691                 if (codec_np == bitclkmaster)
 692                         daifmt |= (codec_np == framemaster) ?
 693                                 SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
 694                 else
 695                         daifmt |= (codec_np == framemaster) ?
 696                                 SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
 697
 698                 /* Override dai_fmt with value from DT */
 699                 priv->dai_fmt = daifmt;
 700         }
 701
 702         /* Change direction according to format */
 703         if (priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) {
 704                 priv->cpu_priv.sysclk_dir[TX] = SND_SOC_CLOCK_IN;
 705                 priv->cpu_priv.sysclk_dir[RX] = SND_SOC_CLOCK_IN;
 706         }
 707
 708         of_node_put(bitclkmaster);
 709         of_node_put(framemaster);
 710
 711         if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
 712                 dev_err(&pdev->dev, "failed to find codec device\n");
 713                 ret = -EPROBE_DEFER;
 714                 goto asrc_fail;
 715         }
 716
 717         /* Common settings for corresponding Freescale CPU DAI driver */
 718         if (of_node_name_eq(cpu_np, "ssi")) {
 719                 /* Only SSI needs to configure AUDMUX */
 720                 ret = fsl_asoc_card_audmux_init(np, priv);
 721                 if (ret) {
 722                         dev_err(&pdev->dev, "failed to init audmux\n");
 723                         goto asrc_fail;
 724                 }
 725         } else if (of_node_name_eq(cpu_np, "esai")) {
 726                 struct clk *esai_clk = clk_get(&cpu_pdev->dev, "extal");
 727
 728                 if (!IS_ERR(esai_clk)) {
 729                         priv->cpu_priv.sysclk_freq[TX] = clk_get_rate(esai_clk);
 730                         priv->cpu_priv.sysclk_freq[RX] = clk_get_rate(esai_clk);
 731                         clk_put(esai_clk);
 732                 } else if (PTR_ERR(esai_clk) == -EPROBE_DEFER) {
 733                         ret = -EPROBE_DEFER;
 734                         goto asrc_fail;
 735                 }
 736
 737                 priv->cpu_priv.sysclk_id[1] = ESAI_HCKT_EXTAL;
 738                 priv->cpu_priv.sysclk_id[0] = ESAI_HCKR_EXTAL;
 739         } else if (of_node_name_eq(cpu_np, "sai")) {
 740                 priv->cpu_priv.sysclk_id[1] = FSL_SAI_CLK_MAST1;
 741                 priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
 742         }
 743
 744         /* Initialize sound card */
 745         priv->pdev = pdev;
 746         priv->card.dev = &pdev->dev;
 747         priv->card.owner = THIS_MODULE;
 748         ret = snd_soc_of_parse_card_name(&priv->card, "model");
 749         if (ret) {
 750                 snprintf(priv->name, sizeof(priv->name), "%s-audio",
 751                          fsl_asoc_card_is_ac97(priv) ? "ac97" : codec_dev_name);
 752                 priv->card.name = priv->name;
 753         }
 754         priv->card.dai_link = priv->dai_link;
 755         priv->card.late_probe = fsl_asoc_card_late_probe;
 756         priv->card.dapm_widgets = fsl_asoc_card_dapm_widgets;
 757         priv->card.num_dapm_widgets = ARRAY_SIZE(fsl_asoc_card_dapm_widgets);
 758
 759         /* Drop the second half of DAPM routes -- ASRC */
 760         if (!asrc_pdev)
 761                 priv->card.num_dapm_routes /= 2;
 762
 763         if (of_property_read_bool(np, "audio-routing")) {
 764                 ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
 765                 if (ret) {
 766                         dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 767                         goto asrc_fail;
 768                 }
 769         }
 770
 771         /* Normal DAI Link */
 772         priv->dai_link[0].cpus->of_node = cpu_np;
 773         priv->dai_link[0].codecs->dai_name = codec_dai_name;
 774
 775         if (!fsl_asoc_card_is_ac97(priv))
 776                 priv->dai_link[0].codecs->of_node = codec_np;
 777         else {
 778                 u32 idx;
 779
 780                 ret = of_property_read_u32(cpu_np, "cell-index", &idx);
 781                 if (ret) {
 782                         dev_err(&pdev->dev,
 783                                 "cannot get CPU index property\n");
 784                         goto asrc_fail;
 785                 }
 786
 787                 priv->dai_link[0].codecs->name =
 788                                 devm_kasprintf(&pdev->dev, GFP_KERNEL,
 789                                                "ac97-codec.%u",
 790                                                (unsigned int)idx);
 791                 if (!priv->dai_link[0].codecs->name) {
 792                         ret = -ENOMEM;
 793                         goto asrc_fail;
 794                 }
 795         }
 796
 797         priv->dai_link[0].platforms->of_node = cpu_np;
 798         priv->dai_link[0].dai_fmt = priv->dai_fmt;
 799         priv->card.num_links = 1;
 800
 801         if (asrc_pdev) {
 802                 /* DPCM DAI Links only if ASRC exsits */
 803                 priv->dai_link[1].cpus->of_node = asrc_np;
 804                 priv->dai_link[1].platforms->of_node = asrc_np;
 805                 priv->dai_link[2].codecs->dai_name = codec_dai_name;
 806                 priv->dai_link[2].codecs->of_node = codec_np;
 807                 priv->dai_link[2].codecs->name =
 808                                 priv->dai_link[0].codecs->name;
 809                 priv->dai_link[2].cpus->of_node = cpu_np;
 810                 priv->dai_link[2].dai_fmt = priv->dai_fmt;
 811                 priv->card.num_links = 3;
 812
 813                 ret = of_property_read_u32(asrc_np, "fsl,asrc-rate",
 814                                            &priv->asrc_rate);
 815                 if (ret) {
 816                         dev_err(&pdev->dev, "failed to get output rate\n");
 817                         ret = -EINVAL;
 818                         goto asrc_fail;
 819                 }
 820
 821                 ret = of_property_read_u32(asrc_np, "fsl,asrc-format",
 822                                            &priv->asrc_format);
 823                 if (ret) {
 824                         /* Fallback to old binding; translate to asrc_format */
 825                         ret = of_property_read_u32(asrc_np, "fsl,asrc-width",
 826                                                    &width);
 827                         if (ret) {
 828                                 dev_err(&pdev->dev,
 829                                         "failed to decide output format\n");
 830                                 goto asrc_fail;
 831                         }
 832
 833                         if (width == 24)
 834                                 priv->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
 835                         else
 836                                 priv->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
 837                 }
 838         }
 839
 840         /* Finish card registering */
 841         platform_set_drvdata(pdev, priv);
 842         snd_soc_card_set_drvdata(&priv->card, priv);
 843
 844         ret = devm_snd_soc_register_card(&pdev->dev, &priv->card);
 845         if (ret) {
 846                 if (ret != -EPROBE_DEFER)
 847                         dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 848                 goto asrc_fail;
 849         }
 850
 851         /*
 852          * Properties "hp-det-gpio" and "mic-det-gpio" are optional, and
 853          * asoc_simple_init_jack uses these properties for creating
 854          * Headphone Jack and Microphone Jack.
 855          *
 856          * The notifier is initialized in snd_soc_card_jack_new(), then
 857          * snd_soc_jack_notifier_register can be called.
 858          */
 859         if (of_property_read_bool(np, "hp-det-gpio")) {
 860                 ret = asoc_simple_init_jack(&priv->card, &priv->hp_jack,
 861                                             1, NULL, "Headphone Jack");
 862                 if (ret)
 863                         goto asrc_fail;
 864
 865                 snd_soc_jack_notifier_register(&priv->hp_jack.jack, &hp_jack_nb);
 866         }
 867
 868         if (of_property_read_bool(np, "mic-det-gpio")) {
 869                 ret = asoc_simple_init_jack(&priv->card, &priv->mic_jack,
 870                                             0, NULL, "Mic Jack");
 871                 if (ret)
 872                         goto asrc_fail;
 873
 874                 snd_soc_jack_notifier_register(&priv->mic_jack.jack, &mic_jack_nb);
 875         }
 876
 877 asrc_fail:
 878         of_node_put(asrc_np);
 879         of_node_put(codec_np);
 880         put_device(&cpu_pdev->dev);
 881 fail:
 882         of_node_put(cpu_np);
 883
 884         return ret;
 885 }
 886
 887 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
 888         { .compatible = "fsl,imx-audio-ac97", },
 889         { .compatible = "fsl,imx-audio-cs42888", },
 890         { .compatible = "fsl,imx-audio-cs427x", },
 891         { .compatible = "fsl,imx-audio-tlv320aic32x4", },
 892         { .compatible = "fsl,imx-audio-sgtl5000", },
 893         { .compatible = "fsl,imx-audio-wm8962", },
 894         { .compatible = "fsl,imx-audio-wm8960", },
 895         { .compatible = "fsl,imx-audio-mqs", },
 896         { .compatible = "fsl,imx-audio-wm8524", },
 897         { .compatible = "fsl,imx-audio-si476x", },
 898         { .compatible = "fsl,imx-audio-wm8958", },
 899         {}
 900 };
 901 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
 902
 903 static struct platform_driver fsl_asoc_card_driver = {
 904         .probe = fsl_asoc_card_probe,
 905         .driver = {
 906                 .name = "fsl-asoc-card",
 907                 .pm = &snd_soc_pm_ops,
 908                 .of_match_table = fsl_asoc_card_dt_ids,
 909         },
 910 };
 911 module_platform_driver(fsl_asoc_card_driver);
 912
 913 MODULE_DESCRIPTION("Freescale Generic ASoC Sound Card driver with ASRC");
 914 MODULE_AUTHOR("Nicolin Chen <nicoleotsuka@gmail.com>");
 915 MODULE_ALIAS("platform:fsl-asoc-card");
 916 MODULE_LICENSE("GPL");