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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 "../codecs/wm9712.h"
 25 #include "pxa2xx-ac97.h"
 26 
 27 static int e800_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_E800_SPK_AMP_ON, 1);
 32         else if (event & SND_SOC_DAPM_POST_PMD)
 33                 gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
 34 
 35         return 0;
 36 }
 37 
 38 static int e800_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_E800_HP_AMP_OFF, 0);
 43         else if (event & SND_SOC_DAPM_POST_PMD)
 44                 gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
 45 
 46         return 0;
 47 }
 48 
 49 static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
 50         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 51         SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
 52         SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
 53         SND_SOC_DAPM_SPK("Speaker", NULL),
 54         SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
 55                         e800_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                         e800_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 Jack", NULL, "HPOUTL"},
 64         {"Headphone Jack", NULL, "HPOUTR"},
 65         {"Headphone Jack", NULL, "Headphone Amp"},
 66 
 67         {"Speaker Amp", NULL, "MONOOUT"},
 68         {"Speaker", NULL, "Speaker Amp"},
 69 
 70         {"MIC1", NULL, "Mic (Internal1)"},
 71         {"MIC2", NULL, "Mic (Internal2)"},
 72 };
 73 
 74 static int e800_ac97_init(struct snd_soc_pcm_runtime *rtd)
 75 {
 76         struct snd_soc_codec *codec = rtd->codec;
 77         struct snd_soc_dapm_context *dapm = &codec->dapm;
 78 
 79         snd_soc_dapm_new_controls(dapm, e800_dapm_widgets,
 80                                         ARRAY_SIZE(e800_dapm_widgets));
 81 
 82         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 83 
 84         return 0;
 85 }
 86 
 87 static struct snd_soc_dai_link e800_dai[] = {
 88         {
 89                 .name = "AC97",
 90                 .stream_name = "AC97 HiFi",
 91                 .cpu_dai_name = "pxa2xx-ac97",
 92                 .codec_dai_name = "wm9712-hifi",
 93                 .platform_name = "pxa-pcm-audio",
 94                 .codec_name = "wm9712-codec",
 95                 .init = e800_ac97_init,
 96         },
 97         {
 98                 .name = "AC97 Aux",
 99                 .stream_name = "AC97 Aux",
100                 .cpu_dai_name = "pxa2xx-ac97-aux",
101                 .codec_dai_name ="wm9712-aux",
102                 .platform_name = "pxa-pcm-audio",
103                 .codec_name = "wm9712-codec",
104         },
105 };
106 
107 static struct snd_soc_card e800 = {
108         .name = "Toshiba e800",
109         .owner = THIS_MODULE,
110         .dai_link = e800_dai,
111         .num_links = ARRAY_SIZE(e800_dai),
112 };
113 
114 static struct gpio e800_audio_gpios[] = {
115         { GPIO_E800_SPK_AMP_ON, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
116         { GPIO_E800_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
117 };
118 
119 static int e800_probe(struct platform_device *pdev)
120 {
121         struct snd_soc_card *card = &e800;
122         int ret;
123 
124         ret = gpio_request_array(e800_audio_gpios,
125                                  ARRAY_SIZE(e800_audio_gpios));
126         if (ret)
127                 return ret;
128 
129         card->dev = &pdev->dev;
130 
131         ret = snd_soc_register_card(card);
132         if (ret) {
133                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
134                         ret);
135                 gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
136         }
137         return ret;
138 }
139 
140 static int e800_remove(struct platform_device *pdev)
141 {
142         struct snd_soc_card *card = platform_get_drvdata(pdev);
143 
144         gpio_free_array(e800_audio_gpios, ARRAY_SIZE(e800_audio_gpios));
145         snd_soc_unregister_card(card);
146         return 0;
147 }
148 
149 static struct platform_driver e800_driver = {
150         .driver         = {
151                 .name   = "e800-audio",
152                 .owner  = THIS_MODULE,
153                 .pm     = &snd_soc_pm_ops,
154         },
155         .probe          = e800_probe,
156         .remove         = e800_remove,
157 };
158 
159 module_platform_driver(e800_driver);
160 
161 /* Module information */
162 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
163 MODULE_DESCRIPTION("ALSA SoC driver for e800");
164 MODULE_LICENSE("GPL v2");
165 MODULE_ALIAS("platform:e800-audio");
166 

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