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Linux/sound/soc/pxa/palm27x.c

  1 /*
  2  * linux/sound/soc/pxa/palm27x.c
  3  *
  4  * SoC Audio driver for Palm T|X, T5 and LifeDrive
  5  *
  6  * based on tosa.c
  7  *
  8  * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com>
  9  *
 10  * This program is free software; you can redistribute it and/or modify
 11  * it under the terms of the GNU General Public License version 2 as
 12  * published by the Free Software Foundation.
 13  *
 14  */
 15 
 16 #include <linux/module.h>
 17 #include <linux/moduleparam.h>
 18 #include <linux/device.h>
 19 #include <linux/gpio.h>
 20 
 21 #include <sound/core.h>
 22 #include <sound/pcm.h>
 23 #include <sound/soc.h>
 24 #include <sound/jack.h>
 25 
 26 #include <asm/mach-types.h>
 27 #include <mach/audio.h>
 28 #include <linux/platform_data/asoc-palm27x.h>
 29 
 30 #include "pxa2xx-ac97.h"
 31 
 32 static struct snd_soc_jack hs_jack;
 33 
 34 /* Headphones jack detection DAPM pins */
 35 static struct snd_soc_jack_pin hs_jack_pins[] = {
 36         {
 37                 .pin    = "Headphone Jack",
 38                 .mask   = SND_JACK_HEADPHONE,
 39         },
 40 };
 41 
 42 /* Headphones jack detection gpios */
 43 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 44         [0] = {
 45                 /* gpio is set on per-platform basis */
 46                 .name           = "hp-gpio",
 47                 .report         = SND_JACK_HEADPHONE,
 48                 .debounce_time  = 200,
 49         },
 50 };
 51 
 52 /* Palm27x machine dapm widgets */
 53 static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {
 54         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 55         SND_SOC_DAPM_SPK("Ext. Speaker", NULL),
 56         SND_SOC_DAPM_MIC("Ext. Microphone", NULL),
 57 };
 58 
 59 /* PalmTX audio map */
 60 static const struct snd_soc_dapm_route audio_map[] = {
 61         /* headphone connected to HPOUTL, HPOUTR */
 62         {"Headphone Jack", NULL, "HPOUTL"},
 63         {"Headphone Jack", NULL, "HPOUTR"},
 64 
 65         /* ext speaker connected to ROUT2, LOUT2 */
 66         {"Ext. Speaker", NULL, "LOUT2"},
 67         {"Ext. Speaker", NULL, "ROUT2"},
 68 
 69         /* mic connected to MIC1 */
 70         {"MIC1", NULL, "Ext. Microphone"},
 71 };
 72 
 73 static struct snd_soc_card palm27x_asoc;
 74 
 75 static int palm27x_ac97_init(struct snd_soc_pcm_runtime *rtd)
 76 {
 77         int err;
 78 
 79         /* Jack detection API stuff */
 80         err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
 81                                     SND_JACK_HEADPHONE, &hs_jack, hs_jack_pins,
 82                                     ARRAY_SIZE(hs_jack_pins));
 83         if (err)
 84                 return err;
 85 
 86         err = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 87                                 hs_jack_gpios);
 88 
 89         return err;
 90 }
 91 
 92 static struct snd_soc_dai_link palm27x_dai[] = {
 93 {
 94         .name = "AC97 HiFi",
 95         .stream_name = "AC97 HiFi",
 96         .cpu_dai_name = "pxa2xx-ac97",
 97         .codec_dai_name =  "wm9712-hifi",
 98         .codec_name = "wm9712-codec",
 99         .platform_name = "pxa-pcm-audio",
100         .init = palm27x_ac97_init,
101 },
102 {
103         .name = "AC97 Aux",
104         .stream_name = "AC97 Aux",
105         .cpu_dai_name = "pxa2xx-ac97-aux",
106         .codec_dai_name = "wm9712-aux",
107         .codec_name = "wm9712-codec",
108         .platform_name = "pxa-pcm-audio",
109 },
110 };
111 
112 static struct snd_soc_card palm27x_asoc = {
113         .name = "Palm/PXA27x",
114         .owner = THIS_MODULE,
115         .dai_link = palm27x_dai,
116         .num_links = ARRAY_SIZE(palm27x_dai),
117         .dapm_widgets = palm27x_dapm_widgets,
118         .num_dapm_widgets = ARRAY_SIZE(palm27x_dapm_widgets),
119         .dapm_routes = audio_map,
120         .num_dapm_routes = ARRAY_SIZE(audio_map),
121         .fully_routed = true,
122 };
123 
124 static int palm27x_asoc_probe(struct platform_device *pdev)
125 {
126         int ret;
127 
128         if (!(machine_is_palmtx() || machine_is_palmt5() ||
129                 machine_is_palmld() || machine_is_palmte2()))
130                 return -ENODEV;
131 
132         if (!pdev->dev.platform_data) {
133                 dev_err(&pdev->dev, "please supply platform_data\n");
134                 return -ENODEV;
135         }
136 
137         hs_jack_gpios[0].gpio = ((struct palm27x_asoc_info *)
138                         (pdev->dev.platform_data))->jack_gpio;
139 
140         palm27x_asoc.dev = &pdev->dev;
141 
142         ret = devm_snd_soc_register_card(&pdev->dev, &palm27x_asoc);
143         if (ret)
144                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
145                         ret);
146         return ret;
147 }
148 
149 static struct platform_driver palm27x_wm9712_driver = {
150         .probe          = palm27x_asoc_probe,
151         .driver         = {
152                 .name           = "palm27x-asoc",
153                 .pm     = &snd_soc_pm_ops,
154         },
155 };
156 
157 module_platform_driver(palm27x_wm9712_driver);
158 
159 /* Module information */
160 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
161 MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
162 MODULE_LICENSE("GPL");
163 MODULE_ALIAS("platform:palm27x-asoc");
164 

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