sound/soc/mediatek/mt8173-max98090.c

   1 /*
   2  * mt8173-max98090.c  --  MT8173 MAX98090 ALSA SoC machine driver
   3  *
   4  * Copyright (c) 2015 MediaTek Inc.
   5  * Author: Koro Chen <koro.chen@mediatek.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 and
   9  * only version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <sound/soc.h>
  19 #include <sound/jack.h>
  20 #include <linux/gpio.h>
  21 #include "../codecs/max98090.h"
  22
  23 static struct snd_soc_jack mt8173_max98090_jack;
  24
  25 static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = {
  26         {
  27                 .pin    = "Headphone",
  28                 .mask   = SND_JACK_HEADPHONE,
  29         },
  30         {
  31                 .pin    = "Headset Mic",
  32                 .mask   = SND_JACK_MICROPHONE,
  33         },
  34 };
  35
  36 static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = {
  37         SND_SOC_DAPM_SPK("Speaker", NULL),
  38         SND_SOC_DAPM_MIC("Int Mic", NULL),
  39         SND_SOC_DAPM_HP("Headphone", NULL),
  40         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  41 };
  42
  43 static const struct snd_soc_dapm_route mt8173_max98090_routes[] = {
  44         {"Speaker", NULL, "SPKL"},
  45         {"Speaker", NULL, "SPKR"},
  46         {"DMICL", NULL, "Int Mic"},
  47         {"Headphone", NULL, "HPL"},
  48         {"Headphone", NULL, "HPR"},
  49         {"Headset Mic", NULL, "MICBIAS"},
  50         {"IN34", NULL, "Headset Mic"},
  51 };
  52
  53 static const struct snd_kcontrol_new mt8173_max98090_controls[] = {
  54         SOC_DAPM_PIN_SWITCH("Speaker"),
  55         SOC_DAPM_PIN_SWITCH("Int Mic"),
  56         SOC_DAPM_PIN_SWITCH("Headphone"),
  57         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  58 };
  59
  60 static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream,
  61                                      struct snd_pcm_hw_params *params)
  62 {
  63         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  64         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  65
  66         return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256,
  67                                       SND_SOC_CLOCK_IN);
  68 }
  69
  70 static struct snd_soc_ops mt8173_max98090_ops = {
  71         .hw_params = mt8173_max98090_hw_params,
  72 };
  73
  74 static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime)
  75 {
  76         int ret;
  77         struct snd_soc_card *card = runtime->card;
  78         struct snd_soc_codec *codec = runtime->codec;
  79
  80         /* enable jack detection */
  81         ret = snd_soc_card_jack_new(card, "Headphone", SND_JACK_HEADPHONE,
  82                                     &mt8173_max98090_jack, NULL, 0);
  83         if (ret) {
  84                 dev_err(card->dev, "Can't snd_soc_jack_new %d\n", ret);
  85                 return ret;
  86         }
  87
  88         ret = snd_soc_jack_add_pins(&mt8173_max98090_jack,
  89                                     ARRAY_SIZE(mt8173_max98090_jack_pins),
  90                                     mt8173_max98090_jack_pins);
  91         if (ret) {
  92                 dev_err(card->dev, "Can't snd_soc_jack_add_pins %d\n", ret);
  93                 return ret;
  94         }
  95
  96         return max98090_mic_detect(codec, &mt8173_max98090_jack);
  97 }
  98
  99 /* Digital audio interface glue - connects codec <---> CPU */
 100 static struct snd_soc_dai_link mt8173_max98090_dais[] = {
 101         /* Front End DAI links */
 102         {
 103                 .name = "MAX98090 Playback",
 104                 .stream_name = "MAX98090 Playback",
 105                 .cpu_dai_name = "DL1",
 106                 .codec_name = "snd-soc-dummy",
 107                 .codec_dai_name = "snd-soc-dummy-dai",
 108                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 109                 .dynamic = 1,
 110                 .dpcm_playback = 1,
 111         },
 112         {
 113                 .name = "MAX98090 Capture",
 114                 .stream_name = "MAX98090 Capture",
 115                 .cpu_dai_name = "VUL",
 116                 .codec_name = "snd-soc-dummy",
 117                 .codec_dai_name = "snd-soc-dummy-dai",
 118                 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
 119                 .dynamic = 1,
 120                 .dpcm_capture = 1,
 121         },
 122         /* Back End DAI links */
 123         {
 124                 .name = "Codec",
 125                 .cpu_dai_name = "I2S",
 126                 .no_pcm = 1,
 127                 .codec_dai_name = "HiFi",
 128                 .init = mt8173_max98090_init,
 129                 .ops = &mt8173_max98090_ops,
 130                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 131                            SND_SOC_DAIFMT_CBS_CFS,
 132                 .dpcm_playback = 1,
 133                 .dpcm_capture = 1,
 134         },
 135 };
 136
 137 static struct snd_soc_card mt8173_max98090_card = {
 138         .name = "mt8173-max98090",
 139         .owner = THIS_MODULE,
 140         .dai_link = mt8173_max98090_dais,
 141         .num_links = ARRAY_SIZE(mt8173_max98090_dais),
 142         .controls = mt8173_max98090_controls,
 143         .num_controls = ARRAY_SIZE(mt8173_max98090_controls),
 144         .dapm_widgets = mt8173_max98090_widgets,
 145         .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),
 146         .dapm_routes = mt8173_max98090_routes,
 147         .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),
 148 };
 149
 150 static int mt8173_max98090_dev_probe(struct platform_device *pdev)
 151 {
 152         struct snd_soc_card *card = &mt8173_max98090_card;
 153         struct device_node *codec_node, *platform_node;
 154         int ret, i;
 155
 156         platform_node = of_parse_phandle(pdev->dev.of_node,
 157                                          "mediatek,platform", 0);
 158         if (!platform_node) {
 159                 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
 160                 return -EINVAL;
 161         }
 162         for (i = 0; i < card->num_links; i++) {
 163                 if (mt8173_max98090_dais[i].platform_name)
 164                         continue;
 165                 mt8173_max98090_dais[i].platform_of_node = platform_node;
 166         }
 167
 168         codec_node = of_parse_phandle(pdev->dev.of_node,
 169                                       "mediatek,audio-codec", 0);
 170         if (!codec_node) {
 171                 dev_err(&pdev->dev,
 172                         "Property 'audio-codec' missing or invalid\n");
 173                 return -EINVAL;
 174         }
 175         for (i = 0; i < card->num_links; i++) {
 176                 if (mt8173_max98090_dais[i].codec_name)
 177                         continue;
 178                 mt8173_max98090_dais[i].codec_of_node = codec_node;
 179         }
 180         card->dev = &pdev->dev;
 181
 182         ret = devm_snd_soc_register_card(&pdev->dev, card);
 183         if (ret)
 184                 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
 185                         __func__, ret);
 186         return ret;
 187 }
 188
 189 static const struct of_device_id mt8173_max98090_dt_match[] = {
 190         { .compatible = "mediatek,mt8173-max98090", },
 191         { }
 192 };
 193 MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);
 194
 195 static struct platform_driver mt8173_max98090_driver = {
 196         .driver = {
 197                    .name = "mt8173-max98090",
 198                    .of_match_table = mt8173_max98090_dt_match,
 199 #ifdef CONFIG_PM
 200                    .pm = &snd_soc_pm_ops,
 201 #endif
 202         },
 203         .probe = mt8173_max98090_dev_probe,
 204 };
 205
 206 module_platform_driver(mt8173_max98090_driver);
 207
 208 /* Module information */
 209 MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
 210 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
 211 MODULE_LICENSE("GPL v2");
 212 MODULE_ALIAS("platform:mt8173-max98090");
 213