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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_codec *codec)
 48 {
 49         struct snd_soc_dapm_context *dapm = &codec->dapm;
 50 
 51         /* set up jack connection */
 52         switch (tosa_jack_func) {
 53         case TOSA_HP:
 54                 snd_soc_dapm_disable_pin(dapm, "Mic (Internal)");
 55                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 56                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
 57                 break;
 58         case TOSA_MIC_INT:
 59                 snd_soc_dapm_enable_pin(dapm, "Mic (Internal)");
 60                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
 61                 snd_soc_dapm_disable_pin(dapm, "Headset Jack");
 62                 break;
 63         case TOSA_HEADSET:
 64                 snd_soc_dapm_disable_pin(dapm, "Mic (Internal)");
 65                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
 66                 snd_soc_dapm_enable_pin(dapm, "Headset Jack");
 67                 break;
 68         }
 69 
 70         if (tosa_spk_func == TOSA_SPK_ON)
 71                 snd_soc_dapm_enable_pin(dapm, "Speaker");
 72         else
 73                 snd_soc_dapm_disable_pin(dapm, "Speaker");
 74 
 75         snd_soc_dapm_sync(dapm);
 76 }
 77 
 78 static int tosa_startup(struct snd_pcm_substream *substream)
 79 {
 80         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 81         struct snd_soc_codec *codec = rtd->codec;
 82 
 83         mutex_lock(&codec->mutex);
 84 
 85         /* check the jack status at stream startup */
 86         tosa_ext_control(codec);
 87 
 88         mutex_unlock(&codec->mutex);
 89 
 90         return 0;
 91 }
 92 
 93 static struct snd_soc_ops tosa_ops = {
 94         .startup = tosa_startup,
 95 };
 96 
 97 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
 98         struct snd_ctl_elem_value *ucontrol)
 99 {
100         ucontrol->value.integer.value[0] = tosa_jack_func;
101         return 0;
102 }
103 
104 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
105         struct snd_ctl_elem_value *ucontrol)
106 {
107         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
108 
109         if (tosa_jack_func == ucontrol->value.integer.value[0])
110                 return 0;
111 
112         tosa_jack_func = ucontrol->value.integer.value[0];
113         tosa_ext_control(codec);
114         return 1;
115 }
116 
117 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
118         struct snd_ctl_elem_value *ucontrol)
119 {
120         ucontrol->value.integer.value[0] = tosa_spk_func;
121         return 0;
122 }
123 
124 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
125         struct snd_ctl_elem_value *ucontrol)
126 {
127         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
128 
129         if (tosa_spk_func == ucontrol->value.integer.value[0])
130                 return 0;
131 
132         tosa_spk_func = ucontrol->value.integer.value[0];
133         tosa_ext_control(codec);
134         return 1;
135 }
136 
137 /* tosa dapm event handlers */
138 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
139         struct snd_kcontrol *k, int event)
140 {
141         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
142         return 0;
143 }
144 
145 /* tosa machine dapm widgets */
146 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
147 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
148 SND_SOC_DAPM_HP("Headset Jack", NULL),
149 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
150 SND_SOC_DAPM_SPK("Speaker", NULL),
151 };
152 
153 /* tosa audio map */
154 static const struct snd_soc_dapm_route audio_map[] = {
155 
156         /* headphone connected to HPOUTL, HPOUTR */
157         {"Headphone Jack", NULL, "HPOUTL"},
158         {"Headphone Jack", NULL, "HPOUTR"},
159 
160         /* ext speaker connected to LOUT2, ROUT2 */
161         {"Speaker", NULL, "LOUT2"},
162         {"Speaker", NULL, "ROUT2"},
163 
164         /* internal mic is connected to mic1, mic2 differential - with bias */
165         {"MIC1", NULL, "Mic Bias"},
166         {"MIC2", NULL, "Mic Bias"},
167         {"Mic Bias", NULL, "Mic (Internal)"},
168 
169         /* headset is connected to HPOUTR, and LINEINR with bias */
170         {"Headset Jack", NULL, "HPOUTR"},
171         {"LINEINR", NULL, "Mic Bias"},
172         {"Mic Bias", NULL, "Headset Jack"},
173 };
174 
175 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
176         "Off"};
177 static const char *spk_function[] = {"On", "Off"};
178 static const struct soc_enum tosa_enum[] = {
179         SOC_ENUM_SINGLE_EXT(5, jack_function),
180         SOC_ENUM_SINGLE_EXT(2, spk_function),
181 };
182 
183 static const struct snd_kcontrol_new tosa_controls[] = {
184         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
185                 tosa_set_jack),
186         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
187                 tosa_set_spk),
188 };
189 
190 static int tosa_ac97_init(struct snd_soc_pcm_runtime *rtd)
191 {
192         struct snd_soc_codec *codec = rtd->codec;
193         struct snd_soc_dapm_context *dapm = &codec->dapm;
194         int err;
195 
196         snd_soc_dapm_nc_pin(dapm, "OUT3");
197         snd_soc_dapm_nc_pin(dapm, "MONOOUT");
198 
199         /* add tosa specific controls */
200         err = snd_soc_add_codec_controls(codec, tosa_controls,
201                                 ARRAY_SIZE(tosa_controls));
202         if (err < 0)
203                 return err;
204 
205         /* add tosa specific widgets */
206         snd_soc_dapm_new_controls(dapm, tosa_dapm_widgets,
207                                   ARRAY_SIZE(tosa_dapm_widgets));
208 
209         /* set up tosa specific audio path audio_map */
210         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
211 
212         return 0;
213 }
214 
215 static struct snd_soc_dai_link tosa_dai[] = {
216 {
217         .name = "AC97",
218         .stream_name = "AC97 HiFi",
219         .cpu_dai_name = "pxa2xx-ac97",
220         .codec_dai_name = "wm9712-hifi",
221         .platform_name = "pxa-pcm-audio",
222         .codec_name = "wm9712-codec",
223         .init = tosa_ac97_init,
224         .ops = &tosa_ops,
225 },
226 {
227         .name = "AC97 Aux",
228         .stream_name = "AC97 Aux",
229         .cpu_dai_name = "pxa2xx-ac97-aux",
230         .codec_dai_name = "wm9712-aux",
231         .platform_name = "pxa-pcm-audio",
232         .codec_name = "wm9712-codec",
233         .ops = &tosa_ops,
234 },
235 };
236 
237 static struct snd_soc_card tosa = {
238         .name = "Tosa",
239         .owner = THIS_MODULE,
240         .dai_link = tosa_dai,
241         .num_links = ARRAY_SIZE(tosa_dai),
242 };
243 
244 static int tosa_probe(struct platform_device *pdev)
245 {
246         struct snd_soc_card *card = &tosa;
247         int ret;
248 
249         ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
250                                "Headphone Jack");
251         if (ret)
252                 return ret;
253 
254         card->dev = &pdev->dev;
255 
256         ret = snd_soc_register_card(card);
257         if (ret) {
258                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
259                         ret);
260                 gpio_free(TOSA_GPIO_L_MUTE);
261         }
262         return ret;
263 }
264 
265 static int tosa_remove(struct platform_device *pdev)
266 {
267         struct snd_soc_card *card = platform_get_drvdata(pdev);
268 
269         gpio_free(TOSA_GPIO_L_MUTE);
270         snd_soc_unregister_card(card);
271         return 0;
272 }
273 
274 static struct platform_driver tosa_driver = {
275         .driver         = {
276                 .name   = "tosa-audio",
277                 .owner  = THIS_MODULE,
278                 .pm     = &snd_soc_pm_ops,
279         },
280         .probe          = tosa_probe,
281         .remove         = tosa_remove,
282 };
283 
284 module_platform_driver(tosa_driver);
285 
286 /* Module information */
287 MODULE_AUTHOR("Richard Purdie");
288 MODULE_DESCRIPTION("ALSA SoC Tosa");
289 MODULE_LICENSE("GPL");
290 MODULE_ALIAS("platform:tosa-audio");
291 

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