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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 int e750_ac97_init(struct snd_soc_pcm_runtime *rtd)
 74 {
 75         struct snd_soc_codec *codec = rtd->codec;
 76         struct snd_soc_dapm_context *dapm = &codec->dapm;
 77 
 78         snd_soc_dapm_nc_pin(dapm, "LOUT");
 79         snd_soc_dapm_nc_pin(dapm, "ROUT");
 80         snd_soc_dapm_nc_pin(dapm, "PHONE");
 81         snd_soc_dapm_nc_pin(dapm, "LINEINL");
 82         snd_soc_dapm_nc_pin(dapm, "LINEINR");
 83         snd_soc_dapm_nc_pin(dapm, "CDINL");
 84         snd_soc_dapm_nc_pin(dapm, "CDINR");
 85         snd_soc_dapm_nc_pin(dapm, "PCBEEP");
 86         snd_soc_dapm_nc_pin(dapm, "MIC2");
 87 
 88         snd_soc_dapm_new_controls(dapm, e750_dapm_widgets,
 89                                         ARRAY_SIZE(e750_dapm_widgets));
 90 
 91         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 92 
 93         return 0;
 94 }
 95 
 96 static struct snd_soc_dai_link e750_dai[] = {
 97         {
 98                 .name = "AC97",
 99                 .stream_name = "AC97 HiFi",
100                 .cpu_dai_name = "pxa2xx-ac97",
101                 .codec_dai_name = "wm9705-hifi",
102                 .platform_name = "pxa-pcm-audio",
103                 .codec_name = "wm9705-codec",
104                 .init = e750_ac97_init,
105                 /* use ops to check startup state */
106         },
107         {
108                 .name = "AC97 Aux",
109                 .stream_name = "AC97 Aux",
110                 .cpu_dai_name = "pxa2xx-ac97-aux",
111                 .codec_dai_name ="wm9705-aux",
112                 .platform_name = "pxa-pcm-audio",
113                 .codec_name = "wm9705-codec",
114         },
115 };
116 
117 static struct snd_soc_card e750 = {
118         .name = "Toshiba e750",
119         .owner = THIS_MODULE,
120         .dai_link = e750_dai,
121         .num_links = ARRAY_SIZE(e750_dai),
122 };
123 
124 static struct gpio e750_audio_gpios[] = {
125         { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
126         { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
127 };
128 
129 static int e750_probe(struct platform_device *pdev)
130 {
131         struct snd_soc_card *card = &e750;
132         int ret;
133 
134         ret = gpio_request_array(e750_audio_gpios,
135                                  ARRAY_SIZE(e750_audio_gpios));
136         if (ret)
137                 return ret;
138 
139         card->dev = &pdev->dev;
140 
141         ret = snd_soc_register_card(card);
142         if (ret) {
143                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
144                         ret);
145                 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
146         }
147         return ret;
148 }
149 
150 static int e750_remove(struct platform_device *pdev)
151 {
152         struct snd_soc_card *card = platform_get_drvdata(pdev);
153 
154         gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
155         snd_soc_unregister_card(card);
156         return 0;
157 }
158 
159 static struct platform_driver e750_driver = {
160         .driver         = {
161                 .name   = "e750-audio",
162                 .owner  = THIS_MODULE,
163                 .pm     = &snd_soc_pm_ops,
164         },
165         .probe          = e750_probe,
166         .remove         = e750_remove,
167 };
168 
169 module_platform_driver(e750_driver);
170 
171 /* Module information */
172 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
173 MODULE_DESCRIPTION("ALSA SoC driver for e750");
174 MODULE_LICENSE("GPL v2");
175 MODULE_ALIAS("platform:e750-audio");
176 

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