linux/sound/soc/intel/boards/byt-max98090.c
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   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
  29struct byt_max98090_private {
  30        struct snd_soc_jack jack;
  31};
  32
  33static 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
  40static 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
  50static 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
  57static 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
  68static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  69        {
  70                .name           = "hp",
  71                .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
  72                .debounce_time  = 200,
  73        },
  74        {
  75                .name           = "mic",
  76                .invert         = 1,
  77                .report         = SND_JACK_MICROPHONE,
  78                .debounce_time  = 200,
  79        },
  80};
  81
  82static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
  83static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
  84
  85static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
  86        { "hp-gpios", &hp_gpios, 1 },
  87        { "mic-gpios", &mic_gpios, 1 },
  88        {},
  89};
  90
  91static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
  92{
  93        int ret;
  94        struct snd_soc_card *card = runtime->card;
  95        struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
  96        struct snd_soc_jack *jack = &drv->jack;
  97
  98        card->dapm.idle_bias_off = true;
  99
 100        ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
 101                                     M98090_REG_SYSTEM_CLOCK,
 102                                     25000000, SND_SOC_CLOCK_IN);
 103        if (ret < 0) {
 104                dev_err(card->dev, "Can't set codec clock %d\n", ret);
 105                return ret;
 106        }
 107
 108        /* Enable jack detection */
 109        ret = snd_soc_card_jack_new(runtime->card, "Headset",
 110                                    SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
 111                                    hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
 112        if (ret)
 113                return ret;
 114
 115        return snd_soc_jack_add_gpiods(card->dev->parent, jack,
 116                                       ARRAY_SIZE(hs_jack_gpios),
 117                                       hs_jack_gpios);
 118}
 119
 120static struct snd_soc_dai_link byt_max98090_dais[] = {
 121        {
 122                .name = "Baytrail Audio",
 123                .stream_name = "Audio",
 124                .cpu_dai_name = "baytrail-pcm-audio",
 125                .codec_dai_name = "HiFi",
 126                .codec_name = "i2c-193C9890:00",
 127                .platform_name = "baytrail-pcm-audio",
 128                .init = byt_max98090_init,
 129                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 130                           SND_SOC_DAIFMT_CBS_CFS,
 131        },
 132};
 133
 134static struct snd_soc_card byt_max98090_card = {
 135        .name = "byt-max98090",
 136        .owner = THIS_MODULE,
 137        .dai_link = byt_max98090_dais,
 138        .num_links = ARRAY_SIZE(byt_max98090_dais),
 139        .dapm_widgets = byt_max98090_widgets,
 140        .num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
 141        .dapm_routes = byt_max98090_audio_map,
 142        .num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
 143        .controls = byt_max98090_controls,
 144        .num_controls = ARRAY_SIZE(byt_max98090_controls),
 145        .fully_routed = true,
 146};
 147
 148static int byt_max98090_probe(struct platform_device *pdev)
 149{
 150        struct device *dev = &pdev->dev;
 151        struct byt_max98090_private *priv;
 152        int ret_val;
 153
 154        priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 155        if (!priv) {
 156                dev_err(&pdev->dev, "allocation failed\n");
 157                return -ENOMEM;
 158        }
 159
 160        ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
 161        if (ret_val)
 162                dev_dbg(dev, "Unable to add GPIO mapping table\n");
 163
 164        byt_max98090_card.dev = &pdev->dev;
 165        snd_soc_card_set_drvdata(&byt_max98090_card, priv);
 166        ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
 167        if (ret_val) {
 168                dev_err(&pdev->dev,
 169                        "snd_soc_register_card failed %d\n", ret_val);
 170                return ret_val;
 171        }
 172
 173        return 0;
 174}
 175
 176static struct platform_driver byt_max98090_driver = {
 177        .probe = byt_max98090_probe,
 178        .driver = {
 179                .name = "byt-max98090",
 180                .pm = &snd_soc_pm_ops,
 181        },
 182};
 183module_platform_driver(byt_max98090_driver)
 184
 185MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
 186MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
 187MODULE_LICENSE("GPL v2");
 188MODULE_ALIAS("platform:byt-max98090");
 189