sound/soc/pxa/e750_wm9705.c

   1 /*
   2  * e750-wm9705.c  --  SoC audio for e750
   3  *
   4  * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation; version 2 ONLY.
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/gpio.h>
  15
  16 #include <sound/core.h>
  17 #include <sound/pcm.h>
  18 #include <sound/soc.h>
  19
  20 #include <mach/audio.h>
  21 #include <mach/eseries-gpio.h>
  22
  23 #include <asm/mach-types.h>
  24
  25 #include "pxa2xx-ac97.h"
  26
  27 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
  28                                 struct snd_kcontrol *kcontrol, int event)
  29 {
  30         if (event & SND_SOC_DAPM_PRE_PMU)
  31                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
  32         else if (event & SND_SOC_DAPM_POST_PMD)
  33                 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
  34
  35         return 0;
  36 }
  37
  38 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
  39                                 struct snd_kcontrol *kcontrol, int event)
  40 {
  41         if (event & SND_SOC_DAPM_PRE_PMU)
  42                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
  43         else if (event & SND_SOC_DAPM_POST_PMD)
  44                 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
  45
  46         return 0;
  47 }
  48
  49 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
  50         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  51         SND_SOC_DAPM_SPK("Speaker", NULL),
  52         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  53         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  54                         e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
  55                         SND_SOC_DAPM_POST_PMD),
  56         SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  57                         e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
  58                         SND_SOC_DAPM_POST_PMD),
  59 };
  60
  61 static const struct snd_soc_dapm_route audio_map[] = {
  62         {"Headphone Amp", NULL, "HPOUTL"},
  63         {"Headphone Amp", NULL, "HPOUTR"},
  64         {"Headphone Jack", NULL, "Headphone Amp"},
  65
  66         {"Speaker Amp", NULL, "MONOOUT"},
  67         {"Speaker", NULL, "Speaker Amp"},
  68
  69         {"MIC1", NULL, "Mic (Internal)"},
  70 };
  71
  72 static struct snd_soc_dai_link e750_dai[] = {
  73         {
  74                 .name = "AC97",
  75                 .stream_name = "AC97 HiFi",
  76                 .cpu_dai_name = "pxa2xx-ac97",
  77                 .codec_dai_name = "wm9705-hifi",
  78                 .platform_name = "pxa-pcm-audio",
  79                 .codec_name = "wm9705-codec",
  80                 /* use ops to check startup state */
  81         },
  82         {
  83                 .name = "AC97 Aux",
  84                 .stream_name = "AC97 Aux",
  85                 .cpu_dai_name = "pxa2xx-ac97-aux",
  86                 .codec_dai_name ="wm9705-aux",
  87                 .platform_name = "pxa-pcm-audio",
  88                 .codec_name = "wm9705-codec",
  89         },
  90 };
  91
  92 static struct snd_soc_card e750 = {
  93         .name = "Toshiba e750",
  94         .owner = THIS_MODULE,
  95         .dai_link = e750_dai,
  96         .num_links = ARRAY_SIZE(e750_dai),
  97
  98         .dapm_widgets = e750_dapm_widgets,
  99         .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
 100         .dapm_routes = audio_map,
 101         .num_dapm_routes = ARRAY_SIZE(audio_map),
 102         .fully_routed = true,
 103 };
 104
 105 static struct gpio e750_audio_gpios[] = {
 106         { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
 107         { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
 108 };
 109
 110 static int e750_probe(struct platform_device *pdev)
 111 {
 112         struct snd_soc_card *card = &e750;
 113         int ret;
 114
 115         ret = gpio_request_array(e750_audio_gpios,
 116                                  ARRAY_SIZE(e750_audio_gpios));
 117         if (ret)
 118                 return ret;
 119
 120         card->dev = &pdev->dev;
 121
 122         ret = devm_snd_soc_register_card(&pdev->dev, card);
 123         if (ret) {
 124                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 125                         ret);
 126                 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 127         }
 128         return ret;
 129 }
 130
 131 static int e750_remove(struct platform_device *pdev)
 132 {
 133         gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
 134         return 0;
 135 }
 136
 137 static struct platform_driver e750_driver = {
 138         .driver         = {
 139                 .name   = "e750-audio",
 140                 .pm     = &snd_soc_pm_ops,
 141         },
 142         .probe          = e750_probe,
 143         .remove         = e750_remove,
 144 };
 145
 146 module_platform_driver(e750_driver);
 147
 148 /* Module information */
 149 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 150 MODULE_DESCRIPTION("ALSA SoC driver for e750");
 151 MODULE_LICENSE("GPL v2");
 152 MODULE_ALIAS("platform:e750-audio");