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