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

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