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

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