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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 "../codecs/wm9712.h"
 31 #include "pxa2xx-ac97.h"
 32 
 33 static struct snd_soc_jack hs_jack;
 34 
 35 /* Headphones jack detection DAPM pins */
 36 static struct snd_soc_jack_pin hs_jack_pins[] = {
 37         {
 38                 .pin    = "Headphone Jack",
 39                 .mask   = SND_JACK_HEADPHONE,
 40         },
 41 };
 42 
 43 /* Headphones jack detection gpios */
 44 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 45         [0] = {
 46                 /* gpio is set on per-platform basis */
 47                 .name           = "hp-gpio",
 48                 .report         = SND_JACK_HEADPHONE,
 49                 .debounce_time  = 200,
 50         },
 51 };
 52 
 53 /* Palm27x machine dapm widgets */
 54 static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {
 55         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 56         SND_SOC_DAPM_SPK("Ext. Speaker", NULL),
 57         SND_SOC_DAPM_MIC("Ext. Microphone", NULL),
 58 };
 59 
 60 /* PalmTX audio map */
 61 static const struct snd_soc_dapm_route audio_map[] = {
 62         /* headphone connected to HPOUTL, HPOUTR */
 63         {"Headphone Jack", NULL, "HPOUTL"},
 64         {"Headphone Jack", NULL, "HPOUTR"},
 65 
 66         /* ext speaker connected to ROUT2, LOUT2 */
 67         {"Ext. Speaker", NULL, "LOUT2"},
 68         {"Ext. Speaker", NULL, "ROUT2"},
 69 
 70         /* mic connected to MIC1 */
 71         {"MIC1", NULL, "Ext. Microphone"},
 72 };
 73 
 74 static struct snd_soc_card palm27x_asoc;
 75 
 76 static int palm27x_ac97_init(struct snd_soc_pcm_runtime *rtd)
 77 {
 78         int err;
 79 
 80         /* Jack detection API stuff */
 81         err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
 82                                     SND_JACK_HEADPHONE, &hs_jack, hs_jack_pins,
 83                                     ARRAY_SIZE(hs_jack_pins));
 84         if (err)
 85                 return err;
 86 
 87         err = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 88                                 hs_jack_gpios);
 89 
 90         return err;
 91 }
 92 
 93 static struct snd_soc_dai_link palm27x_dai[] = {
 94 {
 95         .name = "AC97 HiFi",
 96         .stream_name = "AC97 HiFi",
 97         .cpu_dai_name = "pxa2xx-ac97",
 98         .codec_dai_name =  "wm9712-hifi",
 99         .codec_name = "wm9712-codec",
100         .platform_name = "pxa-pcm-audio",
101         .init = palm27x_ac97_init,
102 },
103 {
104         .name = "AC97 Aux",
105         .stream_name = "AC97 Aux",
106         .cpu_dai_name = "pxa2xx-ac97-aux",
107         .codec_dai_name = "wm9712-aux",
108         .codec_name = "wm9712-codec",
109         .platform_name = "pxa-pcm-audio",
110 },
111 };
112 
113 static struct snd_soc_card palm27x_asoc = {
114         .name = "Palm/PXA27x",
115         .owner = THIS_MODULE,
116         .dai_link = palm27x_dai,
117         .num_links = ARRAY_SIZE(palm27x_dai),
118         .dapm_widgets = palm27x_dapm_widgets,
119         .num_dapm_widgets = ARRAY_SIZE(palm27x_dapm_widgets),
120         .dapm_routes = audio_map,
121         .num_dapm_routes = ARRAY_SIZE(audio_map),
122         .fully_routed = true,
123 };
124 
125 static int palm27x_asoc_probe(struct platform_device *pdev)
126 {
127         int ret;
128 
129         if (!(machine_is_palmtx() || machine_is_palmt5() ||
130                 machine_is_palmld() || machine_is_palmte2()))
131                 return -ENODEV;
132 
133         if (!pdev->dev.platform_data) {
134                 dev_err(&pdev->dev, "please supply platform_data\n");
135                 return -ENODEV;
136         }
137 
138         hs_jack_gpios[0].gpio = ((struct palm27x_asoc_info *)
139                         (pdev->dev.platform_data))->jack_gpio;
140 
141         palm27x_asoc.dev = &pdev->dev;
142 
143         ret = snd_soc_register_card(&palm27x_asoc);
144         if (ret)
145                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
146                         ret);
147         return ret;
148 }
149 
150 static int palm27x_asoc_remove(struct platform_device *pdev)
151 {
152         snd_soc_unregister_card(&palm27x_asoc);
153         return 0;
154 }
155 
156 static struct platform_driver palm27x_wm9712_driver = {
157         .probe          = palm27x_asoc_probe,
158         .remove         = palm27x_asoc_remove,
159         .driver         = {
160                 .name           = "palm27x-asoc",
161                 .pm     = &snd_soc_pm_ops,
162         },
163 };
164 
165 module_platform_driver(palm27x_wm9712_driver);
166 
167 /* Module information */
168 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
169 MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
170 MODULE_LICENSE("GPL");
171 

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