sound/soc/pxa/e740_wm9705.c

   1 /*
   2  * e740-wm9705.c  --  SoC audio for e740
   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
  29 #define E740_AUDIO_OUT 1
  30 #define E740_AUDIO_IN  2
  31
  32 static int e740_audio_power;
  33
  34 static void e740_sync_audio_power(int status)
  35 {
  36         gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
  37         gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
  38         gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
  39 }
  40
  41 static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
  42                                 struct snd_kcontrol *kcontrol, int event)
  43 {
  44         if (event & SND_SOC_DAPM_PRE_PMU)
  45                 e740_audio_power |= E740_AUDIO_IN;
  46         else if (event & SND_SOC_DAPM_POST_PMD)
  47                 e740_audio_power &= ~E740_AUDIO_IN;
  48
  49         e740_sync_audio_power(e740_audio_power);
  50
  51         return 0;
  52 }
  53
  54 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
  55                                 struct snd_kcontrol *kcontrol, int event)
  56 {
  57         if (event & SND_SOC_DAPM_PRE_PMU)
  58                 e740_audio_power |= E740_AUDIO_OUT;
  59         else if (event & SND_SOC_DAPM_POST_PMD)
  60                 e740_audio_power &= ~E740_AUDIO_OUT;
  61
  62         e740_sync_audio_power(e740_audio_power);
  63
  64         return 0;
  65 }
  66
  67 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
  68         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  69         SND_SOC_DAPM_SPK("Speaker", NULL),
  70         SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
  71         SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  72                         e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
  73                         SND_SOC_DAPM_POST_PMD),
  74         SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
  75                         e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
  76                         SND_SOC_DAPM_POST_PMD),
  77 };
  78
  79 static const struct snd_soc_dapm_route audio_map[] = {
  80         {"Output Amp", NULL, "LOUT"},
  81         {"Output Amp", NULL, "ROUT"},
  82         {"Output Amp", NULL, "MONOOUT"},
  83
  84         {"Speaker", NULL, "Output Amp"},
  85         {"Headphone Jack", NULL, "Output Amp"},
  86
  87         {"MIC1", NULL, "Mic Amp"},
  88         {"Mic Amp", NULL, "Mic (Internal)"},
  89 };
  90
  91 static struct snd_soc_dai_link e740_dai[] = {
  92         {
  93                 .name = "AC97",
  94                 .stream_name = "AC97 HiFi",
  95                 .cpu_dai_name = "pxa2xx-ac97",
  96                 .codec_dai_name = "wm9705-hifi",
  97                 .platform_name = "pxa-pcm-audio",
  98                 .codec_name = "wm9705-codec",
  99         },
 100         {
 101                 .name = "AC97 Aux",
 102                 .stream_name = "AC97 Aux",
 103                 .cpu_dai_name = "pxa2xx-ac97-aux",
 104                 .codec_dai_name = "wm9705-aux",
 105                 .platform_name = "pxa-pcm-audio",
 106                 .codec_name = "wm9705-codec",
 107         },
 108 };
 109
 110 static struct snd_soc_card e740 = {
 111         .name = "Toshiba e740",
 112         .owner = THIS_MODULE,
 113         .dai_link = e740_dai,
 114         .num_links = ARRAY_SIZE(e740_dai),
 115
 116         .dapm_widgets = e740_dapm_widgets,
 117         .num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
 118         .dapm_routes = audio_map,
 119         .num_dapm_routes = ARRAY_SIZE(audio_map),
 120         .fully_routed = true,
 121 };
 122
 123 static struct gpio e740_audio_gpios[] = {
 124         { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
 125         { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
 126         { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
 127 };
 128
 129 static int e740_probe(struct platform_device *pdev)
 130 {
 131         struct snd_soc_card *card = &e740;
 132         int ret;
 133
 134         ret = gpio_request_array(e740_audio_gpios,
 135                                  ARRAY_SIZE(e740_audio_gpios));
 136         if (ret)
 137                 return ret;
 138
 139         card->dev = &pdev->dev;
 140
 141         ret = devm_snd_soc_register_card(&pdev->dev, card);
 142         if (ret) {
 143                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 144                         ret);
 145                 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
 146         }
 147         return ret;
 148 }
 149
 150 static int e740_remove(struct platform_device *pdev)
 151 {
 152         gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
 153         return 0;
 154 }
 155
 156 static struct platform_driver e740_driver = {
 157         .driver         = {
 158                 .name   = "e740-audio",
 159                 .pm     = &snd_soc_pm_ops,
 160         },
 161         .probe          = e740_probe,
 162         .remove         = e740_remove,
 163 };
 164
 165 module_platform_driver(e740_driver);
 166
 167 /* Module information */
 168 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
 169 MODULE_DESCRIPTION("ALSA SoC driver for e740");
 170 MODULE_LICENSE("GPL v2");
 171 MODULE_ALIAS("platform:e740-audio");