sound/soc/intel/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                 .pin    = "Ext Spk",
  68                 .mask   = SND_JACK_LINEOUT,
  69         },
  70         {
  71                 .pin    = "Int Mic",
  72                 .mask   = SND_JACK_LINEIN,
  73         },
  74 };
  75
  76 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  77         {
  78                 .name           = "hp-gpio",
  79                 .idx            = 0,
  80                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
  81                 .debounce_time  = 200,
  82         },
  83         {
  84                 .name           = "mic-gpio",
  85                 .idx            = 1,
  86                 .invert         = 1,
  87                 .report         = SND_JACK_MICROPHONE,
  88                 .debounce_time  = 200,
  89         },
  90 };
  91
  92 static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
  93 {
  94         int ret;
  95         struct snd_soc_codec *codec = runtime->codec;
  96         struct snd_soc_card *card = runtime->card;
  97         struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
  98         struct snd_soc_jack *jack = &drv->jack;
  99
 100         card->dapm.idle_bias_off = true;
 101
 102         ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
 103                                      M98090_REG_SYSTEM_CLOCK,
 104                                      25000000, SND_SOC_CLOCK_IN);
 105         if (ret < 0) {
 106                 dev_err(card->dev, "Can't set codec clock %d\n", ret);
 107                 return ret;
 108         }
 109
 110         /* Enable jack detection */
 111         ret = snd_soc_jack_new(codec, "Headset",
 112                                SND_JACK_LINEOUT | SND_JACK_HEADSET, jack);
 113         if (ret)
 114                 return ret;
 115
 116         ret = snd_soc_jack_add_pins(jack, ARRAY_SIZE(hs_jack_pins),
 117                                     hs_jack_pins);
 118         if (ret)
 119                 return ret;
 120
 121         return snd_soc_jack_add_gpiods(card->dev->parent, jack,
 122                                        ARRAY_SIZE(hs_jack_gpios),
 123                                        hs_jack_gpios);
 124 }
 125
 126 static struct snd_soc_dai_link byt_max98090_dais[] = {
 127         {
 128                 .name = "Baytrail Audio",
 129                 .stream_name = "Audio",
 130                 .cpu_dai_name = "baytrail-pcm-audio",
 131                 .codec_dai_name = "HiFi",
 132                 .codec_name = "i2c-193C9890:00",
 133                 .platform_name = "baytrail-pcm-audio",
 134                 .init = byt_max98090_init,
 135                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 136                            SND_SOC_DAIFMT_CBS_CFS,
 137         },
 138 };
 139
 140 static struct snd_soc_card byt_max98090_card = {
 141         .name = "byt-max98090",
 142         .dai_link = byt_max98090_dais,
 143         .num_links = ARRAY_SIZE(byt_max98090_dais),
 144         .dapm_widgets = byt_max98090_widgets,
 145         .num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
 146         .dapm_routes = byt_max98090_audio_map,
 147         .num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
 148         .controls = byt_max98090_controls,
 149         .num_controls = ARRAY_SIZE(byt_max98090_controls),
 150 };
 151
 152 static int byt_max98090_probe(struct platform_device *pdev)
 153 {
 154         int ret_val = 0;
 155         struct byt_max98090_private *priv;
 156
 157         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
 158         if (!priv) {
 159                 dev_err(&pdev->dev, "allocation failed\n");
 160                 return -ENOMEM;
 161         }
 162
 163         byt_max98090_card.dev = &pdev->dev;
 164         snd_soc_card_set_drvdata(&byt_max98090_card, priv);
 165         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
 166         if (ret_val) {
 167                 dev_err(&pdev->dev,
 168                         "snd_soc_register_card failed %d\n", ret_val);
 169                 return ret_val;
 170         }
 171
 172         return ret_val;
 173 }
 174
 175 static int byt_max98090_remove(struct platform_device *pdev)
 176 {
 177         struct snd_soc_card *card = platform_get_drvdata(pdev);
 178         struct byt_max98090_private *priv = snd_soc_card_get_drvdata(card);
 179
 180         snd_soc_jack_free_gpios(&priv->jack, ARRAY_SIZE(hs_jack_gpios),
 181                                 hs_jack_gpios);
 182
 183         return 0;
 184 }
 185
 186 static struct platform_driver byt_max98090_driver = {
 187         .probe = byt_max98090_probe,
 188         .remove = byt_max98090_remove,
 189         .driver = {
 190                 .name = "byt-max98090",
 191                 .owner = THIS_MODULE,
 192                 .pm = &snd_soc_pm_ops,
 193         },
 194 };
 195 module_platform_driver(byt_max98090_driver)
 196
 197 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
 198 MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
 199 MODULE_LICENSE("GPL v2");
 200 MODULE_ALIAS("platform:byt-max98090");