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Linux/sound/soc/pxa/tosa.c

  1 /*
  2  * tosa.c  --  SoC audio for Tosa
  3  *
  4  * Copyright 2005 Wolfson Microelectronics PLC.
  5  * Copyright 2005 Openedhand Ltd.
  6  *
  7  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
  8  *          Richard Purdie <richard@openedhand.com>
  9  *
 10  *  This program is free software; you can redistribute  it and/or modify it
 11  *  under  the terms of  the GNU General  Public License as published by the
 12  *  Free Software Foundation;  either version 2 of the  License, or (at your
 13  *  option) any later version.
 14  *
 15  * GPIO's
 16  *  1 - Jack Insertion
 17  *  5 - Hookswitch (headset answer/hang up switch)
 18  *
 19  */
 20 
 21 #include <linux/module.h>
 22 #include <linux/moduleparam.h>
 23 #include <linux/device.h>
 24 #include <linux/gpio.h>
 25 
 26 #include <sound/core.h>
 27 #include <sound/pcm.h>
 28 #include <sound/soc.h>
 29 
 30 #include <asm/mach-types.h>
 31 #include <mach/tosa.h>
 32 #include <mach/audio.h>
 33 
 34 #include "../codecs/wm9712.h"
 35 #include "pxa2xx-ac97.h"
 36 
 37 #define TOSA_HP        0
 38 #define TOSA_MIC_INT   1
 39 #define TOSA_HEADSET   2
 40 #define TOSA_HP_OFF    3
 41 #define TOSA_SPK_ON    0
 42 #define TOSA_SPK_OFF   1
 43 
 44 static int tosa_jack_func;
 45 static int tosa_spk_func;
 46 
 47 static void tosa_ext_control(struct snd_soc_dapm_context *dapm)
 48 {
 49 
 50         snd_soc_dapm_mutex_lock(dapm);
 51 
 52         /* set up jack connection */
 53         switch (tosa_jack_func) {
 54         case TOSA_HP:
 55                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
 56                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 57                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 58                 break;
 59         case TOSA_MIC_INT:
 60                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
 61                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 62                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 63                 break;
 64         case TOSA_HEADSET:
 65                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
 66                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 67                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
 68                 break;
 69         }
 70 
 71         if (tosa_spk_func == TOSA_SPK_ON)
 72                 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
 73         else
 74                 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
 75 
 76         snd_soc_dapm_sync_unlocked(dapm);
 77 
 78         snd_soc_dapm_mutex_unlock(dapm);
 79 }
 80 
 81 static int tosa_startup(struct snd_pcm_substream *substream)
 82 {
 83         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 84 
 85         /* check the jack status at stream startup */
 86         tosa_ext_control(&rtd->card->dapm);
 87 
 88         return 0;
 89 }
 90 
 91 static struct snd_soc_ops tosa_ops = {
 92         .startup = tosa_startup,
 93 };
 94 
 95 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
 96         struct snd_ctl_elem_value *ucontrol)
 97 {
 98         ucontrol->value.enumerated.item[0] = tosa_jack_func;
 99         return 0;
100 }
101 
102 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
103         struct snd_ctl_elem_value *ucontrol)
104 {
105         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
106 
107         if (tosa_jack_func == ucontrol->value.enumerated.item[0])
108                 return 0;
109 
110         tosa_jack_func = ucontrol->value.enumerated.item[0];
111         tosa_ext_control(&card->dapm);
112         return 1;
113 }
114 
115 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
116         struct snd_ctl_elem_value *ucontrol)
117 {
118         ucontrol->value.enumerated.item[0] = tosa_spk_func;
119         return 0;
120 }
121 
122 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
123         struct snd_ctl_elem_value *ucontrol)
124 {
125         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
126 
127         if (tosa_spk_func == ucontrol->value.enumerated.item[0])
128                 return 0;
129 
130         tosa_spk_func = ucontrol->value.enumerated.item[0];
131         tosa_ext_control(&card->dapm);
132         return 1;
133 }
134 
135 /* tosa dapm event handlers */
136 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
137         struct snd_kcontrol *k, int event)
138 {
139         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
140         return 0;
141 }
142 
143 /* tosa machine dapm widgets */
144 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
145 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
146 SND_SOC_DAPM_HP("Headset Jack", NULL),
147 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
148 SND_SOC_DAPM_SPK("Speaker", NULL),
149 };
150 
151 /* tosa audio map */
152 static const struct snd_soc_dapm_route audio_map[] = {
153 
154         /* headphone connected to HPOUTL, HPOUTR */
155         {"Headphone Jack", NULL, "HPOUTL"},
156         {"Headphone Jack", NULL, "HPOUTR"},
157 
158         /* ext speaker connected to LOUT2, ROUT2 */
159         {"Speaker", NULL, "LOUT2"},
160         {"Speaker", NULL, "ROUT2"},
161 
162         /* internal mic is connected to mic1, mic2 differential - with bias */
163         {"MIC1", NULL, "Mic Bias"},
164         {"MIC2", NULL, "Mic Bias"},
165         {"Mic Bias", NULL, "Mic (Internal)"},
166 
167         /* headset is connected to HPOUTR, and LINEINR with bias */
168         {"Headset Jack", NULL, "HPOUTR"},
169         {"LINEINR", NULL, "Mic Bias"},
170         {"Mic Bias", NULL, "Headset Jack"},
171 };
172 
173 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
174         "Off"};
175 static const char *spk_function[] = {"On", "Off"};
176 static const struct soc_enum tosa_enum[] = {
177         SOC_ENUM_SINGLE_EXT(5, jack_function),
178         SOC_ENUM_SINGLE_EXT(2, spk_function),
179 };
180 
181 static const struct snd_kcontrol_new tosa_controls[] = {
182         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
183                 tosa_set_jack),
184         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
185                 tosa_set_spk),
186 };
187 
188 static struct snd_soc_dai_link tosa_dai[] = {
189 {
190         .name = "AC97",
191         .stream_name = "AC97 HiFi",
192         .cpu_dai_name = "pxa2xx-ac97",
193         .codec_dai_name = "wm9712-hifi",
194         .platform_name = "pxa-pcm-audio",
195         .codec_name = "wm9712-codec",
196         .ops = &tosa_ops,
197 },
198 {
199         .name = "AC97 Aux",
200         .stream_name = "AC97 Aux",
201         .cpu_dai_name = "pxa2xx-ac97-aux",
202         .codec_dai_name = "wm9712-aux",
203         .platform_name = "pxa-pcm-audio",
204         .codec_name = "wm9712-codec",
205         .ops = &tosa_ops,
206 },
207 };
208 
209 static struct snd_soc_card tosa = {
210         .name = "Tosa",
211         .owner = THIS_MODULE,
212         .dai_link = tosa_dai,
213         .num_links = ARRAY_SIZE(tosa_dai),
214 
215         .controls = tosa_controls,
216         .num_controls = ARRAY_SIZE(tosa_controls),
217         .dapm_widgets = tosa_dapm_widgets,
218         .num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
219         .dapm_routes = audio_map,
220         .num_dapm_routes = ARRAY_SIZE(audio_map),
221         .fully_routed = true,
222 };
223 
224 static int tosa_probe(struct platform_device *pdev)
225 {
226         struct snd_soc_card *card = &tosa;
227         int ret;
228 
229         ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
230                                "Headphone Jack");
231         if (ret)
232                 return ret;
233 
234         card->dev = &pdev->dev;
235 
236         ret = devm_snd_soc_register_card(&pdev->dev, card);
237         if (ret) {
238                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
239                         ret);
240                 gpio_free(TOSA_GPIO_L_MUTE);
241         }
242         return ret;
243 }
244 
245 static int tosa_remove(struct platform_device *pdev)
246 {
247         gpio_free(TOSA_GPIO_L_MUTE);
248         return 0;
249 }
250 
251 static struct platform_driver tosa_driver = {
252         .driver         = {
253                 .name   = "tosa-audio",
254                 .pm     = &snd_soc_pm_ops,
255         },
256         .probe          = tosa_probe,
257         .remove         = tosa_remove,
258 };
259 
260 module_platform_driver(tosa_driver);
261 
262 /* Module information */
263 MODULE_AUTHOR("Richard Purdie");
264 MODULE_DESCRIPTION("ALSA SoC Tosa");
265 MODULE_LICENSE("GPL");
266 MODULE_ALIAS("platform:tosa-audio");
267 

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