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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Intel Baytrail SST MAX98090 machine driver
   4  * Copyright (c) 2014, Intel Corporation.
   5  */
   6
   7 #include <linux/init.h>
   8 #include <linux/module.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/acpi.h>
  11 #include <linux/device.h>
  12 #include <linux/gpio.h>
  13 #include <linux/gpio/consumer.h>
  14 #include <linux/slab.h>
  15 #include <sound/pcm.h>
  16 #include <sound/pcm_params.h>
  17 #include <sound/soc.h>
  18 #include <sound/jack.h>
  19 #include "../../codecs/max98090.h"
  20
  21 struct byt_max98090_private {
  22         struct snd_soc_jack jack;
  23 };
  24
  25 static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
  26         SND_SOC_DAPM_HP("Headphone", NULL),
  27         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  28         SND_SOC_DAPM_MIC("Int Mic", NULL),
  29         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  30 };
  31
  32 static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
  33         {"IN34", NULL, "Headset Mic"},
  34         {"Headset Mic", NULL, "MICBIAS"},
  35         {"DMICL", NULL, "Int Mic"},
  36         {"Headphone", NULL, "HPL"},
  37         {"Headphone", NULL, "HPR"},
  38         {"Ext Spk", NULL, "SPKL"},
  39         {"Ext Spk", NULL, "SPKR"},
  40 };
  41
  42 static const struct snd_kcontrol_new byt_max98090_controls[] = {
  43         SOC_DAPM_PIN_SWITCH("Headphone"),
  44         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  45         SOC_DAPM_PIN_SWITCH("Int Mic"),
  46         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  47 };
  48
  49 static struct snd_soc_jack_pin hs_jack_pins[] = {
  50         {
  51                 .pin    = "Headphone",
  52                 .mask   = SND_JACK_HEADPHONE,
  53         },
  54         {
  55                 .pin    = "Headset Mic",
  56                 .mask   = SND_JACK_MICROPHONE,
  57         },
  58 };
  59
  60 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  61         {
  62                 .name           = "hp",
  63                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
  64                 .debounce_time  = 200,
  65         },
  66         {
  67                 .name           = "mic",
  68                 .invert         = 1,
  69                 .report         = SND_JACK_MICROPHONE,
  70                 .debounce_time  = 200,
  71         },
  72 };
  73
  74 static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
  75 static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
  76
  77 static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
  78         { "hp-gpios", &hp_gpios, 1 },
  79         { "mic-gpios", &mic_gpios, 1 },
  80         {},
  81 };
  82
  83 static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
  84 {
  85         int ret;
  86         struct snd_soc_card *card = runtime->card;
  87         struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
  88         struct snd_soc_jack *jack = &drv->jack;
  89
  90         card->dapm.idle_bias_off = true;
  91
  92         ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
  93                                      M98090_REG_SYSTEM_CLOCK,
  94                                      25000000, SND_SOC_CLOCK_IN);
  95         if (ret < 0) {
  96                 dev_err(card->dev, "Can't set codec clock %d\n", ret);
  97                 return ret;
  98         }
  99
 100         /* Enable jack detection */
 101         ret = snd_soc_card_jack_new(runtime->card, "Headset",
 102                                     SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
 103                                     hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
 104         if (ret)
 105                 return ret;
 106
 107         return snd_soc_jack_add_gpiods(card->dev->parent, jack,
 108                                        ARRAY_SIZE(hs_jack_gpios),
 109                                        hs_jack_gpios);
 110 }
 111
 112 static struct snd_soc_dai_link byt_max98090_dais[] = {
 113         {
 114                 .name = "Baytrail Audio",
 115                 .stream_name = "Audio",
 116                 .cpu_dai_name = "baytrail-pcm-audio",
 117                 .codec_dai_name = "HiFi",
 118                 .codec_name = "i2c-193C9890:00",
 119                 .platform_name = "baytrail-pcm-audio",
 120                 .init = byt_max98090_init,
 121                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 122                            SND_SOC_DAIFMT_CBS_CFS,
 123         },
 124 };
 125
 126 static struct snd_soc_card byt_max98090_card = {
 127         .name = "byt-max98090",
 128         .owner = THIS_MODULE,
 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         struct device *dev = &pdev->dev;
 143         struct byt_max98090_private *priv;
 144         int ret_val;
 145
 146         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
 147         if (!priv) {
 148                 dev_err(&pdev->dev, "allocation failed\n");
 149                 return -ENOMEM;
 150         }
 151
 152         ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
 153         if (ret_val)
 154                 dev_dbg(dev, "Unable to add GPIO mapping table\n");
 155
 156         byt_max98090_card.dev = &pdev->dev;
 157         snd_soc_card_set_drvdata(&byt_max98090_card, priv);
 158         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
 159         if (ret_val) {
 160                 dev_err(&pdev->dev,
 161                         "snd_soc_register_card failed %d\n", ret_val);
 162                 return ret_val;
 163         }
 164
 165         return 0;
 166 }
 167
 168 static struct platform_driver byt_max98090_driver = {
 169         .probe = byt_max98090_probe,
 170         .driver = {
 171                 .name = "byt-max98090",
 172                 .pm = &snd_soc_pm_ops,
 173         },
 174 };
 175 module_platform_driver(byt_max98090_driver)
 176
 177 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
 178 MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
 179 MODULE_LICENSE("GPL v2");
 180 MODULE_ALIAS("platform:byt-max98090");