sound/soc/pxa/e750_wm9705.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * e750-wm9705.c  --  SoC audio for e750
   4  *
   5  * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/moduleparam.h>
  10 #include <linux/gpio.h>
  11
  12 #include <sound/core.h>
  13 #include <sound/pcm.h>
  14 #include <sound/soc.h>
  15
  16 #include <mach/audio.h>
  17 #include <mach/eseries-gpio.h>
  18
  19 #include <asm/mach-types.h>
  20
  21 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
  22                                 struct snd_kcontrol *kcontrol, int event)
  23 {
  24         if (event & SND_SOC_DAPM_PRE_PMU)
  25                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
  26         else if (event & SND_SOC_DAPM_POST_PMD)
  27                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
  28
  29         return 0;
  30 }
  31
  32 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
  33                                 struct snd_kcontrol *kcontrol, int event)
  34 {
  35         if (event & SND_SOC_DAPM_PRE_PMU)
  36                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
  37         else if (event & SND_SOC_DAPM_POST_PMD)
  38                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
  39
  40         return 0;
  41 }
  42
  43 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  44         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  45         SND_SOC_DAPM_SPK("Speaker", NULL),
  46         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  47         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  48                         e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  49                         SND_SOC_DAPM_POST_PMD),
  50         SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  51                         e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  52                         SND_SOC_DAPM_POST_PMD),
  53 };
  54
  55 static const struct snd_soc_dapm_route audio_map[] = {
  56         {"Headphone Amp", NULL, "HPOUTL"},
  57         {"Headphone Amp", NULL, "HPOUTR"},
  58         {"Headphone Jack", NULL, "Headphone Amp"},
  59
  60         {"Speaker Amp", NULL, "MONOOUT"},
  61         {"Speaker", NULL, "Speaker Amp"},
  62
  63         {"MIC1", NULL, "Mic (Internal)"},
  64 };
  65
  66 static struct snd_soc_dai_link e750_dai[] = {
  67         {
  68                 .name = "AC97",
  69                 .stream_name = "AC97 HiFi",
  70                 .cpu_dai_name = "pxa2xx-ac97",
  71                 .codec_dai_name = "wm9705-hifi",
  72                 .platform_name = "pxa-pcm-audio",
  73                 .codec_name = "wm9705-codec",
  74                 /* use ops to check startup state */
  75         },
  76         {
  77                 .name = "AC97 Aux",
  78                 .stream_name = "AC97 Aux",
  79                 .cpu_dai_name = "pxa2xx-ac97-aux",
  80                 .codec_dai_name = "wm9705-aux",
  81                 .platform_name = "pxa-pcm-audio",
  82                 .codec_name = "wm9705-codec",
  83         },
  84 };
  85
  86 static struct snd_soc_card e750 = {
  87         .name = "Toshiba e750",
  88         .owner = THIS_MODULE,
  89         .dai_link = e750_dai,
  90         .num_links = ARRAY_SIZE(e750_dai),
  91
  92         .dapm_widgets = e750_dapm_widgets,
  93         .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
  94         .dapm_routes = audio_map,
  95         .num_dapm_routes = ARRAY_SIZE(audio_map),
  96         .fully_routed = true,
  97 };
  98
  99 static struct gpio e750_audio_gpios[] = {
 100         { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 101         { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 102 };
 103
 104 static int e750_probe(struct platform_device *pdev)
 105 {
 106         struct snd_soc_card *card = &e750;
 107         int ret;
 108
 109         ret = gpio_request_array(e750_audio_gpios,
 110                                  ARRAY_SIZE(e750_audio_gpios));
 111         if (ret)
 112                 return ret;
 113
 114         card->dev = &pdev->dev;
 115
 116         ret = devm_snd_soc_register_card(&pdev->dev, card);
 117         if (ret) {
 118                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 119                         ret);
 120                 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 121         }
 122         return ret;
 123 }
 124
 125 static int e750_remove(struct platform_device *pdev)
 126 {
 127         gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 128         return 0;
 129 }
 130
 131 static struct platform_driver e750_driver = {
 132         .driver         = {
 133                 .name   = "e750-audio",
 134                 .pm     = &snd_soc_pm_ops,
 135         },
 136         .probe          = e750_probe,
 137         .remove         = e750_remove,
 138 };
 139
 140 module_platform_driver(e750_driver);
 141
 142 /* Module information */
 143 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 144 MODULE_DESCRIPTION("ALSA SoC driver for e750");
 145 MODULE_LICENSE("GPL v2");
 146 MODULE_ALIAS("platform:e750-audio");