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 static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = {
 167         /* FE */
 168         [DAI_LINK_FE_MULTI_CH_OUT] = {
 169                 .name = "mt2701-cs42448-multi-ch-out",
 170                 .stream_name = "mt2701-cs42448-multi-ch-out",
 171                 .cpu_dai_name = "PCM_multi",
 172                 .codec_name = "snd-soc-dummy",
 173                 .codec_dai_name = "snd-soc-dummy-dai",
 174                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 175                             SND_SOC_DPCM_TRIGGER_POST},
 176                 .ops = &mt2701_cs42448_48k_fe_ops,
 177                 .dynamic = 1,
 178                 .dpcm_playback = 1,
 179         },
 180         [DAI_LINK_FE_PCM0_IN] = {
 181                 .name = "mt2701-cs42448-pcm0",
 182                 .stream_name = "mt2701-cs42448-pcm0-data-UL",
 183                 .cpu_dai_name = "PCM0",
 184                 .codec_name = "snd-soc-dummy",
 185                 .codec_dai_name = "snd-soc-dummy-dai",
 186                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 187                             SND_SOC_DPCM_TRIGGER_POST},
 188                 .ops = &mt2701_cs42448_48k_fe_ops,
 189                 .dynamic = 1,
 190                 .dpcm_capture = 1,
 191         },
 192         [DAI_LINK_FE_PCM1_IN] = {
 193                 .name = "mt2701-cs42448-pcm1-data-UL",
 194                 .stream_name = "mt2701-cs42448-pcm1-data-UL",
 195                 .cpu_dai_name = "PCM1",
 196                 .codec_name = "snd-soc-dummy",
 197                 .codec_dai_name = "snd-soc-dummy-dai",
 198                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 199                             SND_SOC_DPCM_TRIGGER_POST},
 200                 .ops = &mt2701_cs42448_48k_fe_ops,
 201                 .dynamic = 1,
 202                 .dpcm_capture = 1,
 203         },
 204         [DAI_LINK_FE_BT_OUT] = {
 205                 .name = "mt2701-cs42448-pcm-BT-out",
 206                 .stream_name = "mt2701-cs42448-pcm-BT",
 207                 .cpu_dai_name = "PCM_BT_DL",
 208                 .codec_name = "snd-soc-dummy",
 209                 .codec_dai_name = "snd-soc-dummy-dai",
 210                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 211                             SND_SOC_DPCM_TRIGGER_POST},
 212                 .dynamic = 1,
 213                 .dpcm_playback = 1,
 214         },
 215         [DAI_LINK_FE_BT_IN] = {
 216                 .name = "mt2701-cs42448-pcm-BT-in",
 217                 .stream_name = "mt2701-cs42448-pcm-BT",
 218                 .cpu_dai_name = "PCM_BT_UL",
 219                 .codec_name = "snd-soc-dummy",
 220                 .codec_dai_name = "snd-soc-dummy-dai",
 221                 .trigger = {SND_SOC_DPCM_TRIGGER_POST,
 222                             SND_SOC_DPCM_TRIGGER_POST},
 223                 .dynamic = 1,
 224                 .dpcm_capture = 1,
 225         },
 226         /* BE */
 227         [DAI_LINK_BE_I2S0] = {
 228                 .name = "mt2701-cs42448-I2S0",
 229                 .cpu_dai_name = "I2S0",
 230                 .no_pcm = 1,
 231                 .codec_dai_name = "cs42448",
 232                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 233                          | SND_SOC_DAIFMT_GATED,
 234                 .ops = &mt2701_cs42448_be_ops,
 235                 .dpcm_playback = 1,
 236                 .dpcm_capture = 1,
 237         },
 238         [DAI_LINK_BE_I2S1] = {
 239                 .name = "mt2701-cs42448-I2S1",
 240                 .cpu_dai_name = "I2S1",
 241                 .no_pcm = 1,
 242                 .codec_dai_name = "cs42448",
 243                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 244                          | SND_SOC_DAIFMT_GATED,
 245                 .ops = &mt2701_cs42448_be_ops,
 246                 .dpcm_playback = 1,
 247                 .dpcm_capture = 1,
 248         },
 249         [DAI_LINK_BE_I2S2] = {
 250                 .name = "mt2701-cs42448-I2S2",
 251                 .cpu_dai_name = "I2S2",
 252                 .no_pcm = 1,
 253                 .codec_dai_name = "cs42448",
 254                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 255                          | SND_SOC_DAIFMT_GATED,
 256                 .ops = &mt2701_cs42448_be_ops,
 257                 .dpcm_playback = 1,
 258                 .dpcm_capture = 1,
 259         },
 260         [DAI_LINK_BE_I2S3] = {
 261                 .name = "mt2701-cs42448-I2S3",
 262                 .cpu_dai_name = "I2S3",
 263                 .no_pcm = 1,
 264                 .codec_dai_name = "cs42448",
 265                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
 266                          | SND_SOC_DAIFMT_GATED,
 267                 .ops = &mt2701_cs42448_be_ops,
 268                 .dpcm_playback = 1,
 269                 .dpcm_capture = 1,
 270         },
 271         [DAI_LINK_BE_MRG_BT] = {
 272                 .name = "mt2701-cs42448-MRG-BT",
 273                 .cpu_dai_name = "MRG BT",
 274                 .no_pcm = 1,
 275                 .codec_dai_name = "bt-sco-pcm-wb",
 276                 .dpcm_playback = 1,
 277                 .dpcm_capture = 1,
 278         },
 279 };
 280
 281 static struct snd_soc_card mt2701_cs42448_soc_card = {
 282         .name = "mt2701-cs42448",
 283         .owner = THIS_MODULE,
 284         .dai_link = mt2701_cs42448_dai_links,
 285         .num_links = ARRAY_SIZE(mt2701_cs42448_dai_links),
 286         .controls = mt2701_cs42448_controls,
 287         .num_controls = ARRAY_SIZE(mt2701_cs42448_controls),
 288         .dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets,
 289         .num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets),
 290 };
 291
 292 static int mt2701_cs42448_machine_probe(struct platform_device *pdev)
 293 {
 294         struct snd_soc_card *card = &mt2701_cs42448_soc_card;
 295         int ret;
 296         int i;
 297         struct device_node *platform_node, *codec_node, *codec_node_bt_mrg;
 298         struct mt2701_cs42448_private *priv =
 299                 devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private),
 300                              GFP_KERNEL);
 301         struct device *dev = &pdev->dev;
 302
 303         if (!priv)
 304                 return -ENOMEM;
 305
 306         platform_node = of_parse_phandle(pdev->dev.of_node,
 307                                          "mediatek,platform", 0);
 308         if (!platform_node) {
 309                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
 310                 return -EINVAL;
 311         }
 312         for (i = 0; i < card->num_links; i++) {
 313                 if (mt2701_cs42448_dai_links[i].platform_name)
 314                         continue;
 315                 mt2701_cs42448_dai_links[i].platform_of_node = platform_node;
 316         }
 317
 318         card->dev = dev;
 319
 320         codec_node = of_parse_phandle(pdev->dev.of_node,
 321                                       "mediatek,audio-codec", 0);
 322         if (!codec_node) {
 323                 dev_err(&pdev->dev,
 324                         "Property 'audio-codec' missing or invalid\n");
 325                 return -EINVAL;
 326         }
 327         for (i = 0; i < card->num_links; i++) {
 328                 if (mt2701_cs42448_dai_links[i].codec_name)
 329                         continue;
 330                 mt2701_cs42448_dai_links[i].codec_of_node = codec_node;
 331         }
 332
 333         codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node,
 334                                              "mediatek,audio-codec-bt-mrg", 0);
 335         if (!codec_node_bt_mrg) {
 336                 dev_err(&pdev->dev,
 337                         "Property 'audio-codec-bt-mrg' missing or invalid\n");
 338                 return -EINVAL;
 339         }
 340         mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codec_of_node
 341                                                         = codec_node_bt_mrg;
 342
 343         ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
 344         if (ret) {
 345                 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
 346                 return ret;
 347         }
 348
 349         priv->i2s1_in_mux_gpio_sel_1 =
 350                 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0);
 351         if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) {
 352                 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1,
 353                                         "i2s1_in_mux_gpio_sel_1");
 354                 if (ret)
 355                         dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n",
 356                                  __func__, ret);
 357                 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0);
 358         }
 359
 360         priv->i2s1_in_mux_gpio_sel_2 =
 361                 of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0);
 362         if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) {
 363                 ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2,
 364                                         "i2s1_in_mux_gpio_sel_2");
 365                 if (ret)
 366                         dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n",
 367                                  __func__, ret);
 368                 gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0);
 369         }
 370         snd_soc_card_set_drvdata(card, priv);
 371
 372         ret = devm_snd_soc_register_card(&pdev->dev, card);
 373
 374         if (ret)
 375                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 376                         __func__, ret);
 377         return ret;
 378 }
 379
 380 #ifdef CONFIG_OF
 381 static const struct of_device_id mt2701_cs42448_machine_dt_match[] = {
 382         {.compatible = "mediatek,mt2701-cs42448-machine",},
 383         {}
 384 };
 385 #endif
 386
 387 static struct platform_driver mt2701_cs42448_machine = {
 388         .driver = {
 389                 .name = "mt2701-cs42448",
 390                    #ifdef CONFIG_OF
 391                    .of_match_table = mt2701_cs42448_machine_dt_match,
 392                    #endif
 393         },
 394         .probe = mt2701_cs42448_machine_probe,
 395 };
 396
 397 module_platform_driver(mt2701_cs42448_machine);
 398
 399 /* Module information */
 400 MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver");
 401 MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>");
 402 MODULE_LICENSE("GPL v2");
 403 MODULE_ALIAS("mt2701 cs42448 soc card");