sound/soc/mediatek/mt2701/mt2701-cs42448.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * mt2701-cs42448.c  --  MT2701 CS42448 ALSA SoC machine driver
   4  *
   5  * Copyright (c) 2016 MediaTek Inc.
   6  * Author: Ir Lian <ir.lian@mediatek.com>
   7  *         Garlic Tseng <garlic.tseng@mediatek.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <sound/soc.h>
  12 #include <linux/delay.h>
  13 #include <linux/gpio.h>
  14 #include <linux/pinctrl/consumer.h>
  15 #include <linux/of_gpio.h>
  16
  17 #include "mt2701-afe-common.h"
  18
  19 struct mt2701_cs42448_private {
  20         int i2s1_in_mux;
  21         int i2s1_in_mux_gpio_sel_1;
  22         int i2s1_in_mux_gpio_sel_2;
  23 };
  24
  25 static const char * const i2sin_mux_switch_text[] = {
  26         "ADC_SDOUT2",
  27         "ADC_SDOUT3",
  28         "I2S_IN_1",
  29         "I2S_IN_2",
  30 };
  31
  32 static const struct soc_enum i2sin_mux_enum =
  33         SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text);
  34
  35 static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol,
  36                                          struct snd_ctl_elem_value *ucontrol)
  37 {
  38         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  39         struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
  40
  41         ucontrol->value.integer.value[0] = priv->i2s1_in_mux;
  42         return 0;
  43 }
  44
  45 static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol,
  46                                          struct snd_ctl_elem_value *ucontrol)
  47 {
  48         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
  49         struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
  50
  51         if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux)
  52                 return 0;
  53
  54         switch (ucontrol->value.integer.value[0]) {
  55         case 0:
  56                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
  57                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
  58                 break;
  59         case 1:
  60                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
  61                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
  62                 break;
  63         case 2:
  64                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
  65                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
  66                 break;
  67         case 3:
  68                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
  69                 gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
  70                 break;
  71         default:
  72                 dev_warn(card->dev, "%s invalid setting\n", __func__);
  73         }
  74
  75         priv->i2s1_in_mux = ucontrol->value.integer.value[0];
  76         return 0;
  77 }
  78
  79 static const struct snd_soc_dapm_widget
  80                         mt2701_cs42448_asoc_card_dapm_widgets[] = {
  81         SND_SOC_DAPM_LINE("Line Out Jack", NULL),
  82         SND_SOC_DAPM_MIC("AMIC", NULL),
  83         SND_SOC_DAPM_LINE("Tuner In", NULL),
  84         SND_SOC_DAPM_LINE("Satellite Tuner In", NULL),
  85         SND_SOC_DAPM_LINE("AUX In", NULL),
  86 };
  87
  88 static const struct snd_kcontrol_new mt2701_cs42448_controls[] = {
  89         SOC_DAPM_PIN_SWITCH("Line Out Jack"),
  90         SOC_DAPM_PIN_SWITCH("AMIC"),
  91         SOC_DAPM_PIN_SWITCH("Tuner In"),
  92         SOC_DAPM_PIN_SWITCH("Satellite Tuner In"),
  93         SOC_DAPM_PIN_SWITCH("AUX In"),
  94         SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum,
  95                      mt2701_cs42448_i2sin1_mux_get,
  96                      mt2701_cs42448_i2sin1_mux_set),
  97 };
  98
  99 static const unsigned int mt2701_cs42448_sampling_rates[] = {48000};
 100
 101 static const struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = {
 102                 .count = ARRAY_SIZE(mt2701_cs42448_sampling_rates),
 103                 .list = mt2701_cs42448_sampling_rates,
 104                 .mask = 0,
 105 };
 106
 107 static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream)
 108 {
 109         int err;
 110
 111         err = snd_pcm_hw_constraint_list(substream->runtime, 0,
 112                                          SNDRV_PCM_HW_PARAM_RATE,
 113                                          &mt2701_cs42448_constraints_rates);
 114         if (err < 0) {
 115                 dev_err(substream->pcm->card->dev,
 116                         "%s snd_pcm_hw_constraint_list failed: 0x%x\n",
 117                         __func__, err);
 118                 return err;
 119         }
 120         return 0;
 121 }
 122
 123 static const struct snd_soc_ops mt2701_cs42448_48k_fe_ops = {
 124         .startup = mt2701_cs42448_fe_ops_startup,
 125 };
 126
 127 static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream,
 128                                            struct snd_pcm_hw_params *params)
 129 {
 130         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 131         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 132         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 133         unsigned int mclk_rate;
 134         unsigned int rate = params_rate(params);
 135         unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
 136         unsigned int div_bck_over_lrck = 64;
 137
 138         mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
 139
 140         /* mt2701 mclk */
 141         snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
 142
 143         /* codec mclk */
 144         snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
 145
 146         return 0;
 147 }
 148
 149 static struct snd_soc_ops mt2701_cs42448_be_ops = {
 150         .hw_params = mt2701_cs42448_be_ops_hw_params
 151 };
 152
 153 enum {
 154         DAI_LINK_FE_MULTI_CH_OUT,
 155         DAI_LINK_FE_PCM0_IN,
 156         DAI_LINK_FE_PCM1_IN,
 157         DAI_LINK_FE_BT_OUT,
 158         DAI_LINK_FE_BT_IN,
 159         DAI_LINK_BE_I2S0,
 160         DAI_LINK_BE_I2S1,
 161         DAI_LINK_BE_I2S2,
 162         DAI_LINK_BE_I2S3,
 163         DAI_LINK_BE_MRG_BT,
 164 };
 165
 166 SND_SOC_DAILINK_DEFS(fe_multi_ch_out,
 167         DAILINK_COMP_ARRAY(COMP_CPU("PCM_multi")),
 168         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 169         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 170
 171 SND_SOC_DAILINK_DEFS(fe_pcm0_in,
 172         DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),
 173         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 174         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 175
 176 SND_SOC_DAILINK_DEFS(fe_pcm1_in,
 177         DAILINK_COMP_ARRAY(COMP_CPU("PCM1")),
 178         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 179         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 180
 181 SND_SOC_DAILINK_DEFS(fe_bt_out,
 182         DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_DL")),
 183         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 184         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 185
 186 SND_SOC_DAILINK_DEFS(fe_bt_in,
 187         DAILINK_COMP_ARRAY(COMP_CPU("PCM_BT_UL")),
 188         DAILINK_COMP_ARRAY(COMP_DUMMY()),
 189         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 190
 191 SND_SOC_DAILINK_DEFS(be_i2s0,
 192         DAILINK_COMP_ARRAY(COMP_CPU("I2S0")),
 193         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
 194         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 195
 196 SND_SOC_DAILINK_DEFS(be_i2s1,
 197         DAILINK_COMP_ARRAY(COMP_CPU("I2S1")),
 198         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
 199         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 200
 201 SND_SOC_DAILINK_DEFS(be_i2s2,
 202         DAILINK_COMP_ARRAY(COMP_CPU("I2S2")),
 203         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
 204         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 205
 206 SND_SOC_DAILINK_DEFS(be_i2s3,
 207         DAILINK_COMP_ARRAY(COMP_CPU("I2S3")),
 208         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42448")),
 209         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 210
 211 SND_SOC_DAILINK_DEFS(be_mrg_bt,
 212         DAILINK_COMP_ARRAY(COMP_CPU("MRG BT")),
 213         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "bt-sco-pcm-wb")),
 214         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 215
 216 static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = {
 217         /* FE */
 218         [DAI_LINK_FE_MULTI_CH_OUT] = {
 219                 .name = "mt2701-cs42448-multi-ch-out",
 220                 .stream_name = "mt2701-cs42448-multi-ch-out",
 221                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 222                             SND_SOC_DPCM_TRIGGER_POST},
 223                 .ops = &mt2701_cs42448_48k_fe_ops,
 224                 .dynamic = 1,
 225                 .dpcm_playback = 1,
 226                 SND_SOC_DAILINK_REG(fe_multi_ch_out),
 227         },
 228         [DAI_LINK_FE_PCM0_IN] = {
 229                 .name = "mt2701-cs42448-pcm0",
 230                 .stream_name = "mt2701-cs42448-pcm0-data-UL",
 231                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 232                             SND_SOC_DPCM_TRIGGER_POST},
 233                 .ops = &mt2701_cs42448_48k_fe_ops,
 234                 .dynamic = 1,
 235                 .dpcm_capture = 1,
 236                 SND_SOC_DAILINK_REG(fe_pcm0_in),
 237         },
 238         [DAI_LINK_FE_PCM1_IN] = {
 239                 .name = "mt2701-cs42448-pcm1-data-UL",
 240                 .stream_name = "mt2701-cs42448-pcm1-data-UL",
 241                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 242                             SND_SOC_DPCM_TRIGGER_POST},
 243                 .ops = &mt2701_cs42448_48k_fe_ops,
 244                 .dynamic = 1,
 245                 .dpcm_capture = 1,
 246                 SND_SOC_DAILINK_REG(fe_pcm1_in),
 247         },
 248         [DAI_LINK_FE_BT_OUT] = {
 249                 .name = "mt2701-cs42448-pcm-BT-out",
 250                 .stream_name = "mt2701-cs42448-pcm-BT",
 251                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 252                             SND_SOC_DPCM_TRIGGER_POST},
 253                 .dynamic = 1,
 254                 .dpcm_playback = 1,
 255                 SND_SOC_DAILINK_REG(fe_bt_out),
 256         },
 257         [DAI_LINK_FE_BT_IN] = {
 258                 .name = "mt2701-cs42448-pcm-BT-in",
 259                 .stream_name = "mt2701-cs42448-pcm-BT",
 260                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 261                             SND_SOC_DPCM_TRIGGER_POST},
 262                 .dynamic = 1,
 263                 .dpcm_capture = 1,
 264                 SND_SOC_DAILINK_REG(fe_bt_in),
 265         },
 266         /* BE */
 267         [DAI_LINK_BE_I2S0] = {
 268                 .name = "mt2701-cs42448-I2S0",
 269                 .no_pcm = 1,
 270                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 271                          | SND_SOC_DAIFMT_GATED,
 272                 .ops = &mt2701_cs42448_be_ops,
 273                 .dpcm_playback = 1,
 274                 .dpcm_capture = 1,
 275                 SND_SOC_DAILINK_REG(be_i2s0),
 276         },
 277         [DAI_LINK_BE_I2S1] = {
 278                 .name = "mt2701-cs42448-I2S1",
 279                 .no_pcm = 1,
 280                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 281                          | SND_SOC_DAIFMT_GATED,
 282                 .ops = &mt2701_cs42448_be_ops,
 283                 .dpcm_playback = 1,
 284                 .dpcm_capture = 1,
 285                 SND_SOC_DAILINK_REG(be_i2s1),
 286         },
 287         [DAI_LINK_BE_I2S2] = {
 288                 .name = "mt2701-cs42448-I2S2",
 289                 .no_pcm = 1,
 290                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 291                          | SND_SOC_DAIFMT_GATED,
 292                 .ops = &mt2701_cs42448_be_ops,
 293                 .dpcm_playback = 1,
 294                 .dpcm_capture = 1,
 295                 SND_SOC_DAILINK_REG(be_i2s2),
 296         },
 297         [DAI_LINK_BE_I2S3] = {
 298                 .name = "mt2701-cs42448-I2S3",
 299                 .no_pcm = 1,
 300                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 301                          | SND_SOC_DAIFMT_GATED,
 302                 .ops = &mt2701_cs42448_be_ops,
 303                 .dpcm_playback = 1,
 304                 .dpcm_capture = 1,
 305                 SND_SOC_DAILINK_REG(be_i2s3),
 306         },
 307         [DAI_LINK_BE_MRG_BT] = {
 308                 .name = "mt2701-cs42448-MRG-BT",
 309                 .no_pcm = 1,
 310                 .dpcm_playback = 1,
 311                 .dpcm_capture = 1,
 312                 SND_SOC_DAILINK_REG(be_mrg_bt),
 313         },
 314 };
 315
 316 static struct snd_soc_card mt2701_cs42448_soc_card = {
 317         .name = "mt2701-cs42448",
 318         .owner = THIS_MODULE,
 319         .dai_link = mt2701_cs42448_dai_links,
 320         .num_links = ARRAY_SIZE(mt2701_cs42448_dai_links),
 321         .controls = mt2701_cs42448_controls,
 322         .num_controls = ARRAY_SIZE(mt2701_cs42448_controls),
 323         .dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets,
 324         .num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets),
 325 };
 326
 327 static int mt2701_cs42448_machine_probe(struct platform_device *pdev)
 328 {
 329         struct snd_soc_card *card = &mt2701_cs42448_soc_card;
 330         int ret;
 331         int i;
 332         struct device_node *platform_node, *codec_node, *codec_node_bt_mrg;
 333         struct mt2701_cs42448_private *priv =
 334                 devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private),
 335                              GFP_KERNEL);
 336         struct device *dev = &pdev->dev;
 337         struct snd_soc_dai_link *dai_link;
 338
 339         if (!priv)
 340                 return -ENOMEM;
 341
 342         platform_node = of_parse_phandle(pdev->dev.of_node,
 343                                          "mediatek,platform", 0);
 344         if (!platform_node) {
 345                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
 346                 return -EINVAL;
 347         }
 348         for_each_card_prelinks(card, i, dai_link) {
 349                 if (dai_link->platforms->name)
 350                         continue;
 351                 dai_link->platforms->of_node = platform_node;
 352         }
 353
 354         card->dev = dev;
 355
 356         codec_node = of_parse_phandle(pdev->dev.of_node,
 357                                       "mediatek,audio-codec", 0);
 358         if (!codec_node) {
 359                 dev_err(&pdev->dev,
 360                         "Property 'audio-codec' missing or invalid\n");
 361                 return -EINVAL;
 362         }
 363         for_each_card_prelinks(card, i, dai_link) {
 364                 if (dai_link->codecs->name)
 365                         continue;
 366                 dai_link->codecs->of_node = codec_node;
 367         }
 368
 369         codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node,
 370                                              "mediatek,audio-codec-bt-mrg", 0);
 371         if (!codec_node_bt_mrg) {
 372                 dev_err(&pdev->dev,
 373                         "Property 'audio-codec-bt-mrg' missing or invalid\n");
 374                 return -EINVAL;
 375         }
 376         mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codecs->of_node
 377                                                         = codec_node_bt_mrg;
 378
 379         ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
 380         if (ret) {
 381                 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 382                 return ret;
 383         }
 384
 385         priv->i2s1_in_mux_gpio_sel_1 =
 386                 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0);
 387         if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) {
 388                 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1,
 389                                         "i2s1_in_mux_gpio_sel_1");
 390                 if (ret)
 391                         dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n",
 392                                  __func__, ret);
 393                 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0);
 394         }
 395
 396         priv->i2s1_in_mux_gpio_sel_2 =
 397                 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0);
 398         if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) {
 399                 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2,
 400                                         "i2s1_in_mux_gpio_sel_2");
 401                 if (ret)
 402                         dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n",
 403                                  __func__, ret);
 404                 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0);
 405         }
 406         snd_soc_card_set_drvdata(card, priv);
 407
 408         ret = devm_snd_soc_register_card(&pdev->dev, card);
 409
 410         if (ret)
 411                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 412                         __func__, ret);
 413         return ret;
 414 }
 415
 416 #ifdef CONFIG_OF
 417 static const struct of_device_id mt2701_cs42448_machine_dt_match[] = {
 418         {.compatible = "mediatek,mt2701-cs42448-machine",},
 419         {}
 420 };
 421 #endif
 422
 423 static struct platform_driver mt2701_cs42448_machine = {
 424         .driver = {
 425                 .name = "mt2701-cs42448",
 426                    #ifdef CONFIG_OF
 427                    .of_match_table = mt2701_cs42448_machine_dt_match,
 428                    #endif
 429         },
 430         .probe = mt2701_cs42448_machine_probe,
 431 };
 432
 433 module_platform_driver(mt2701_cs42448_machine);
 434
 435 /* Module information */
 436 MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver");
 437 MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>");
 438 MODULE_LICENSE("GPL v2");
 439 MODULE_ALIAS("mt2701 cs42448 soc card");