sound/soc/jz4740/qi_lb60.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/moduleparam.h>
   8 #include <linux/timer.h>
   9 #include <linux/interrupt.h>
  10 #include <linux/platform_device.h>
  11 #include <sound/core.h>
  12 #include <sound/pcm.h>
  13 #include <sound/soc.h>
  14 #include <linux/gpio/consumer.h>
  15
  16 struct qi_lb60 {
  17         struct gpio_desc *snd_gpio;
  18         struct gpio_desc *amp_gpio;
  19 };
  20
  21 static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
  22                              struct snd_kcontrol *ctrl, int event)
  23 {
  24         struct qi_lb60 *qi_lb60 = snd_soc_card_get_drvdata(widget->dapm->card);
  25         int on = !SND_SOC_DAPM_EVENT_OFF(event);
  26
  27         gpiod_set_value_cansleep(qi_lb60->snd_gpio, on);
  28         gpiod_set_value_cansleep(qi_lb60->amp_gpio, on);
  29
  30         return 0;
  31 }
  32
  33 static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
  34         SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
  35         SND_SOC_DAPM_MIC("Mic", NULL),
  36 };
  37
  38 static const struct snd_soc_dapm_route qi_lb60_routes[] = {
  39         {"Mic", NULL, "MIC"},
  40         {"Speaker", NULL, "LOUT"},
  41         {"Speaker", NULL, "ROUT"},
  42 };
  43
  44 SND_SOC_DAILINK_DEFS(hifi,
  45         DAILINK_COMP_ARRAY(COMP_CPU("jz4740-i2s")),
  46         DAILINK_COMP_ARRAY(COMP_CODEC("jz4740-codec", "jz4740-hifi")),
  47         DAILINK_COMP_ARRAY(COMP_PLATFORM("jz4740-i2s")));
  48
  49 static struct snd_soc_dai_link qi_lb60_dai = {
  50         .name = "jz4740",
  51         .stream_name = "jz4740",
  52         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  53                 SND_SOC_DAIFMT_CBM_CFM,
  54         SND_SOC_DAILINK_REG(hifi),
  55 };
  56
  57 static struct snd_soc_card qi_lb60_card = {
  58         .name = "QI LB60",
  59         .owner = THIS_MODULE,
  60         .dai_link = &qi_lb60_dai,
  61         .num_links = 1,
  62
  63         .dapm_widgets = qi_lb60_widgets,
  64         .num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
  65         .dapm_routes = qi_lb60_routes,
  66         .num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
  67         .fully_routed = true,
  68 };
  69
  70 static int qi_lb60_probe(struct platform_device *pdev)
  71 {
  72         struct qi_lb60 *qi_lb60;
  73         struct snd_soc_card *card = &qi_lb60_card;
  74
  75         qi_lb60 = devm_kzalloc(&pdev->dev, sizeof(*qi_lb60), GFP_KERNEL);
  76         if (!qi_lb60)
  77                 return -ENOMEM;
  78
  79         qi_lb60->snd_gpio = devm_gpiod_get(&pdev->dev, "snd", GPIOD_OUT_LOW);
  80         if (IS_ERR(qi_lb60->snd_gpio))
  81                 return PTR_ERR(qi_lb60->snd_gpio);
  82
  83         qi_lb60->amp_gpio = devm_gpiod_get(&pdev->dev, "amp", GPIOD_OUT_LOW);
  84         if (IS_ERR(qi_lb60->amp_gpio))
  85                 return PTR_ERR(qi_lb60->amp_gpio);
  86
  87         card->dev = &pdev->dev;
  88
  89         snd_soc_card_set_drvdata(card, qi_lb60);
  90
  91         return devm_snd_soc_register_card(&pdev->dev, card);
  92 }
  93
  94 static struct platform_driver qi_lb60_driver = {
  95         .driver         = {
  96                 .name   = "qi-lb60-audio",
  97         },
  98         .probe          = qi_lb60_probe,
  99 };
 100
 101 module_platform_driver(qi_lb60_driver);
 102
 103 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 104 MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
 105 MODULE_LICENSE("GPL v2");
 106 MODULE_ALIAS("platform:qi-lb60-audio");