sound/soc/pxa/e740_wm9705.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * e740-wm9705.c  --  SoC audio for e740
   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 #define E740_AUDIO_OUT 1
  22 #define E740_AUDIO_IN  2
  23
  24 static int e740_audio_power;
  25
  26 static void e740_sync_audio_power(int status)
  27 {
  28         gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
  29         gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
  30         gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
  31 }
  32
  33 static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
  34                                 struct snd_kcontrol *kcontrol, int event)
  35 {
  36         if (event & SND_SOC_DAPM_PRE_PMU)
  37                 e740_audio_power |= E740_AUDIO_IN;
  38         else if (event & SND_SOC_DAPM_POST_PMD)
  39                 e740_audio_power &= ~E740_AUDIO_IN;
  40
  41         e740_sync_audio_power(e740_audio_power);
  42
  43         return 0;
  44 }
  45
  46 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
  47                                 struct snd_kcontrol *kcontrol, int event)
  48 {
  49         if (event & SND_SOC_DAPM_PRE_PMU)
  50                 e740_audio_power |= E740_AUDIO_OUT;
  51         else if (event & SND_SOC_DAPM_POST_PMD)
  52                 e740_audio_power &= ~E740_AUDIO_OUT;
  53
  54         e740_sync_audio_power(e740_audio_power);
  55
  56         return 0;
  57 }
  58
  59 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
  60         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  61         SND_SOC_DAPM_SPK("Speaker", NULL),
  62         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  63         SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  64                         e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
  65                         SND_SOC_DAPM_POST_PMD),
  66         SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  67                         e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
  68                         SND_SOC_DAPM_POST_PMD),
  69 };
  70
  71 static const struct snd_soc_dapm_route audio_map[] = {
  72         {"Output Amp", NULL, "LOUT"},
  73         {"Output Amp", NULL, "ROUT"},
  74         {"Output Amp", NULL, "MONOOUT"},
  75
  76         {"Speaker", NULL, "Output Amp"},
  77         {"Headphone Jack", NULL, "Output Amp"},
  78
  79         {"MIC1", NULL, "Mic Amp"},
  80         {"Mic Amp", NULL, "Mic (Internal)"},
  81 };
  82
  83 static struct snd_soc_dai_link e740_dai[] = {
  84         {
  85                 .name = "AC97",
  86                 .stream_name = "AC97 HiFi",
  87                 .cpu_dai_name = "pxa2xx-ac97",
  88                 .codec_dai_name = "wm9705-hifi",
  89                 .platform_name = "pxa-pcm-audio",
  90                 .codec_name = "wm9705-codec",
  91         },
  92         {
  93                 .name = "AC97 Aux",
  94                 .stream_name = "AC97 Aux",
  95                 .cpu_dai_name = "pxa2xx-ac97-aux",
  96                 .codec_dai_name = "wm9705-aux",
  97                 .platform_name = "pxa-pcm-audio",
  98                 .codec_name = "wm9705-codec",
  99         },
 100 };
 101
 102 static struct snd_soc_card e740 = {
 103         .name = "Toshiba e740",
 104         .owner = THIS_MODULE,
 105         .dai_link = e740_dai,
 106         .num_links = ARRAY_SIZE(e740_dai),
 107
 108         .dapm_widgets = e740_dapm_widgets,
 109         .num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
 110         .dapm_routes = audio_map,
 111         .num_dapm_routes = ARRAY_SIZE(audio_map),
 112         .fully_routed = true,
 113 };
 114
 115 static struct gpio e740_audio_gpios[] = {
 116         { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
 117         { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
 118         { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
 119 };
 120
 121 static int e740_probe(struct platform_device *pdev)
 122 {
 123         struct snd_soc_card *card = &e740;
 124         int ret;
 125
 126         ret = gpio_request_array(e740_audio_gpios,
 127                                  ARRAY_SIZE(e740_audio_gpios));
 128         if (ret)
 129                 return ret;
 130
 131         card->dev = &pdev->dev;
 132
 133         ret = devm_snd_soc_register_card(&pdev->dev, card);
 134         if (ret) {
 135                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 136                         ret);
 137                 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
 138         }
 139         return ret;
 140 }
 141
 142 static int e740_remove(struct platform_device *pdev)
 143 {
 144         gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
 145         return 0;
 146 }
 147
 148 static struct platform_driver e740_driver = {
 149         .driver         = {
 150                 .name   = "e740-audio",
 151                 .pm     = &snd_soc_pm_ops,
 152         },
 153         .probe          = e740_probe,
 154         .remove         = e740_remove,
 155 };
 156
 157 module_platform_driver(e740_driver);
 158
 159 /* Module information */
 160 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 161 MODULE_DESCRIPTION("ALSA SoC driver for e740");
 162 MODULE_LICENSE("GPL v2");
 163 MODULE_ALIAS("platform:e740-audio");