kernel/sound/soc/intel/boards/byt-max98090.c

   1 /*
   2  * Intel Baytrail SST MAX98090 machine driver
   3  * Copyright (c) 2014, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  */
  14
  15 #include <linux/init.h>
  16 #include <linux/module.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/acpi.h>
  19 #include <linux/device.h>
  20 #include <linux/gpio.h>
  21 #include <linux/gpio/consumer.h>
  22 #include <linux/slab.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26 #include <sound/jack.h>
  27 #include "../../codecs/max98090.h"
  28
  29 struct byt_max98090_private {
  30         struct snd_soc_jack jack;
  31 };
  32
  33 static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
  34         SND_SOC_DAPM_HP("Headphone", NULL),
  35         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  36         SND_SOC_DAPM_MIC("Int Mic", NULL),
  37         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  38 };
  39
  40 static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
  41         {"IN34", NULL, "Headset Mic"},
  42         {"Headset Mic", NULL, "MICBIAS"},
  43         {"DMICL", NULL, "Int Mic"},
  44         {"Headphone", NULL, "HPL"},
  45         {"Headphone", NULL, "HPR"},
  46         {"Ext Spk", NULL, "SPKL"},
  47         {"Ext Spk", NULL, "SPKR"},
  48 };
  49
  50 static const struct snd_kcontrol_new byt_max98090_controls[] = {
  51         SOC_DAPM_PIN_SWITCH("Headphone"),
  52         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  53         SOC_DAPM_PIN_SWITCH("Int Mic"),
  54         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  55 };
  56
  57 static struct snd_soc_jack_pin hs_jack_pins[] = {
  58         {
  59                 .pin    = "Headphone",
  60                 .mask   = SND_JACK_HEADPHONE,
  61         },
  62         {
  63                 .pin    = "Headset Mic",
  64                 .mask   = SND_JACK_MICROPHONE,
  65         },
  66 };
  67
  68 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  69         {
  70                 .name           = "hp-gpio",
  71                 .idx            = 0,
  72                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
  73                 .debounce_time  = 200,
  74         },
  75         {
  76                 .name           = "mic-gpio",
  77                 .idx            = 1,
  78                 .invert         = 1,
  79                 .report         = SND_JACK_MICROPHONE,
  80                 .debounce_time  = 200,
  81         },
  82 };
  83
  84 static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
  85 {
  86         int ret;
  87         struct snd_soc_card *card = runtime->card;
  88         struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
  89         struct snd_soc_jack *jack = &drv->jack;
  90
  91         card->dapm.idle_bias_off = true;
  92
  93         ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
  94                                      M98090_REG_SYSTEM_CLOCK,
  95                                      25000000, SND_SOC_CLOCK_IN);
  96         if (ret < 0) {
  97                 dev_err(card->dev, "Can't set codec clock %d\n", ret);
  98                 return ret;
  99         }
 100
 101         /* Enable jack detection */
 102         ret = snd_soc_card_jack_new(runtime->card, "Headset",
 103                                     SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
 104                                     hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
 105         if (ret)
 106                 return ret;
 107
 108         return snd_soc_jack_add_gpiods(card->dev->parent, jack,
 109                                        ARRAY_SIZE(hs_jack_gpios),
 110                                        hs_jack_gpios);
 111 }
 112
 113 static struct snd_soc_dai_link byt_max98090_dais[] = {
 114         {
 115                 .name = "Baytrail Audio",
 116                 .stream_name = "Audio",
 117                 .cpu_dai_name = "baytrail-pcm-audio",
 118                 .codec_dai_name = "HiFi",
 119                 .codec_name = "i2c-193C9890:00",
 120                 .platform_name = "baytrail-pcm-audio",
 121                 .init = byt_max98090_init,
 122                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 123                            SND_SOC_DAIFMT_CBS_CFS,
 124         },
 125 };
 126
 127 static struct snd_soc_card byt_max98090_card = {
 128         .name = "byt-max98090",
 129         .dai_link = byt_max98090_dais,
 130         .num_links = ARRAY_SIZE(byt_max98090_dais),
 131         .dapm_widgets = byt_max98090_widgets,
 132         .num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
 133         .dapm_routes = byt_max98090_audio_map,
 134         .num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
 135         .controls = byt_max98090_controls,
 136         .num_controls = ARRAY_SIZE(byt_max98090_controls),
 137         .fully_routed = true,
 138 };
 139
 140 static int byt_max98090_probe(struct platform_device *pdev)
 141 {
 142         int ret_val = 0;
 143         struct byt_max98090_private *priv;
 144
 145         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
 146         if (!priv) {
 147                 dev_err(&pdev->dev, "allocation failed\n");
 148                 return -ENOMEM;
 149         }
 150
 151         byt_max98090_card.dev = &pdev->dev;
 152         snd_soc_card_set_drvdata(&byt_max98090_card, priv);
 153         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
 154         if (ret_val) {
 155                 dev_err(&pdev->dev,
 156                         "snd_soc_register_card failed %d\n", ret_val);
 157                 return ret_val;
 158         }
 159
 160         return ret_val;
 161 }
 162
 163 static int byt_max98090_remove(struct platform_device *pdev)
 164 {
 165         struct snd_soc_card *card = platform_get_drvdata(pdev);
 166         struct byt_max98090_private *priv = snd_soc_card_get_drvdata(card);
 167
 168         snd_soc_jack_free_gpios(&priv->jack, ARRAY_SIZE(hs_jack_gpios),
 169                                 hs_jack_gpios);
 170
 171         return 0;
 172 }
 173
 174 static struct platform_driver byt_max98090_driver = {
 175         .probe = byt_max98090_probe,
 176         .remove = byt_max98090_remove,
 177         .driver = {
 178                 .name = "byt-max98090",
 179                 .pm = &snd_soc_pm_ops,
 180         },
 181 };
 182 module_platform_driver(byt_max98090_driver)
 183
 184 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
 185 MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
 186 MODULE_LICENSE("GPL v2");
 187 MODULE_ALIAS("platform:byt-max98090");