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Linux/sound/soc/pxa/e800_wm9712.c

  1 /*
  2  * e800-wm9712.c  --  SoC audio for e800
  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 <asm/mach-types.h>
 21 #include <mach/audio.h>
 22 #include <mach/eseries-gpio.h>
 23 
 24 #include "pxa2xx-ac97.h"
 25 
 26 static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
 27                                 struct snd_kcontrol *kcontrol, int event)
 28 {
 29         if (event & SND_SOC_DAPM_PRE_PMU)
 30                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
 31         else if (event & SND_SOC_DAPM_POST_PMD)
 32                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
 33 
 34         return 0;
 35 }
 36 
 37 static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
 38                                 struct snd_kcontrol *kcontrol, int event)
 39 {
 40         if (event & SND_SOC_DAPM_PRE_PMU)
 41                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
 42         else if (event & SND_SOC_DAPM_POST_PMD)
 43                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
 44 
 45         return 0;
 46 }
 47 
 48 static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
 49         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 50         SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
 51         SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
 52         SND_SOC_DAPM_SPK("Speaker", NULL),
 53         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
 54                         e800_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                         e800_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 Jack", NULL, "HPOUTL"},
 63         {"Headphone Jack", NULL, "HPOUTR"},
 64         {"Headphone Jack", NULL, "Headphone Amp"},
 65 
 66         {"Speaker Amp", NULL, "MONOOUT"},
 67         {"Speaker", NULL, "Speaker Amp"},
 68 
 69         {"MIC1", NULL, "Mic (Internal1)"},
 70         {"MIC2", NULL, "Mic (Internal2)"},
 71 };
 72 
 73 static struct snd_soc_dai_link e800_dai[] = {
 74         {
 75                 .name = "AC97",
 76                 .stream_name = "AC97 HiFi",
 77                 .cpu_dai_name = "pxa2xx-ac97",
 78                 .codec_dai_name = "wm9712-hifi",
 79                 .platform_name = "pxa-pcm-audio",
 80                 .codec_name = "wm9712-codec",
 81         },
 82         {
 83                 .name = "AC97 Aux",
 84                 .stream_name = "AC97 Aux",
 85                 .cpu_dai_name = "pxa2xx-ac97-aux",
 86                 .codec_dai_name ="wm9712-aux",
 87                 .platform_name = "pxa-pcm-audio",
 88                 .codec_name = "wm9712-codec",
 89         },
 90 };
 91 
 92 static struct snd_soc_card e800 = {
 93         .name = "Toshiba e800",
 94         .owner = THIS_MODULE,
 95         .dai_link = e800_dai,
 96         .num_links = ARRAY_SIZE(e800_dai),
 97 
 98         .dapm_widgets = e800_dapm_widgets,
 99         .num_dapm_widgets = ARRAY_SIZE(e800_dapm_widgets),
100         .dapm_routes = audio_map,
101         .num_dapm_routes = ARRAY_SIZE(audio_map),
102 };
103 
104 static struct gpio e800_audio_gpios[] = {
105         { GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
106         { GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
107 };
108 
109 static int e800_probe(struct platform_device *pdev)
110 {
111         struct snd_soc_card *card = &e800;
112         int ret;
113 
114         ret = gpio_request_array(e800_audio_gpios,
115                                  ARRAY_SIZE(e800_audio_gpios));
116         if (ret)
117                 return ret;
118 
119         card->dev = &pdev->dev;
120 
121         ret = devm_snd_soc_register_card(&pdev->dev, card);
122         if (ret) {
123                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
124                         ret);
125                 gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
126         }
127         return ret;
128 }
129 
130 static int e800_remove(struct platform_device *pdev)
131 {
132         gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
133         return 0;
134 }
135 
136 static struct platform_driver e800_driver = {
137         .driver         = {
138                 .name   = "e800-audio",
139                 .pm     = &snd_soc_pm_ops,
140         },
141         .probe          = e800_probe,
142         .remove         = e800_remove,
143 };
144 
145 module_platform_driver(e800_driver);
146 
147 /* Module information */
148 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
149 MODULE_DESCRIPTION("ALSA SoC driver for e800");
150 MODULE_LICENSE("GPL v2");
151 MODULE_ALIAS("platform:e800-audio");
152 

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