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Linux/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 = snd_soc_register_card(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         struct snd_soc_card *card = platform_get_drvdata(pdev);
135 
136         gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
137         snd_soc_unregister_card(card);
138         return 0;
139 }
140 
141 static struct platform_driver e750_driver = {
142         .driver         = {
143                 .name   = "e750-audio",
144                 .pm     = &snd_soc_pm_ops,
145         },
146         .probe          = e750_probe,
147         .remove         = e750_remove,
148 };
149 
150 module_platform_driver(e750_driver);
151 
152 /* Module information */
153 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
154 MODULE_DESCRIPTION("ALSA SoC driver for e750");
155 MODULE_LICENSE("GPL v2");
156 MODULE_ALIAS("platform:e750-audio");
157 

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