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Linux/sound/soc/pxa/tosa.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * tosa.c  --  SoC audio for Tosa
  4  *
  5  * Copyright 2005 Wolfson Microelectronics PLC.
  6  * Copyright 2005 Openedhand Ltd.
  7  *
  8  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
  9  *          Richard Purdie <richard@openedhand.com>
 10  *
 11  * GPIO's
 12  *  1 - Jack Insertion
 13  *  5 - Hookswitch (headset answer/hang up switch)
 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 
 25 #include <asm/mach-types.h>
 26 #include <mach/tosa.h>
 27 #include <mach/audio.h>
 28 
 29 #define TOSA_HP        0
 30 #define TOSA_MIC_INT   1
 31 #define TOSA_HEADSET   2
 32 #define TOSA_HP_OFF    3
 33 #define TOSA_SPK_ON    0
 34 #define TOSA_SPK_OFF   1
 35 
 36 static int tosa_jack_func;
 37 static int tosa_spk_func;
 38 
 39 static void tosa_ext_control(struct snd_soc_dapm_context *dapm)
 40 {
 41 
 42         snd_soc_dapm_mutex_lock(dapm);
 43 
 44         /* set up jack connection */
 45         switch (tosa_jack_func) {
 46         case TOSA_HP:
 47                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
 48                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 49                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 50                 break;
 51         case TOSA_MIC_INT:
 52                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic (Internal)");
 53                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 54                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
 55                 break;
 56         case TOSA_HEADSET:
 57                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic (Internal)");
 58                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 59                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
 60                 break;
 61         }
 62 
 63         if (tosa_spk_func == TOSA_SPK_ON)
 64                 snd_soc_dapm_enable_pin_unlocked(dapm, "Speaker");
 65         else
 66                 snd_soc_dapm_disable_pin_unlocked(dapm, "Speaker");
 67 
 68         snd_soc_dapm_sync_unlocked(dapm);
 69 
 70         snd_soc_dapm_mutex_unlock(dapm);
 71 }
 72 
 73 static int tosa_startup(struct snd_pcm_substream *substream)
 74 {
 75         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 76 
 77         /* check the jack status at stream startup */
 78         tosa_ext_control(&rtd->card->dapm);
 79 
 80         return 0;
 81 }
 82 
 83 static const struct snd_soc_ops tosa_ops = {
 84         .startup = tosa_startup,
 85 };
 86 
 87 static int tosa_get_jack(struct snd_kcontrol *kcontrol,
 88         struct snd_ctl_elem_value *ucontrol)
 89 {
 90         ucontrol->value.enumerated.item[0] = tosa_jack_func;
 91         return 0;
 92 }
 93 
 94 static int tosa_set_jack(struct snd_kcontrol *kcontrol,
 95         struct snd_ctl_elem_value *ucontrol)
 96 {
 97         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 98 
 99         if (tosa_jack_func == ucontrol->value.enumerated.item[0])
100                 return 0;
101 
102         tosa_jack_func = ucontrol->value.enumerated.item[0];
103         tosa_ext_control(&card->dapm);
104         return 1;
105 }
106 
107 static int tosa_get_spk(struct snd_kcontrol *kcontrol,
108         struct snd_ctl_elem_value *ucontrol)
109 {
110         ucontrol->value.enumerated.item[0] = tosa_spk_func;
111         return 0;
112 }
113 
114 static int tosa_set_spk(struct snd_kcontrol *kcontrol,
115         struct snd_ctl_elem_value *ucontrol)
116 {
117         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
118 
119         if (tosa_spk_func == ucontrol->value.enumerated.item[0])
120                 return 0;
121 
122         tosa_spk_func = ucontrol->value.enumerated.item[0];
123         tosa_ext_control(&card->dapm);
124         return 1;
125 }
126 
127 /* tosa dapm event handlers */
128 static int tosa_hp_event(struct snd_soc_dapm_widget *w,
129         struct snd_kcontrol *k, int event)
130 {
131         gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 : 0);
132         return 0;
133 }
134 
135 /* tosa machine dapm widgets */
136 static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
137 SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
138 SND_SOC_DAPM_HP("Headset Jack", NULL),
139 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
140 SND_SOC_DAPM_SPK("Speaker", NULL),
141 };
142 
143 /* tosa audio map */
144 static const struct snd_soc_dapm_route audio_map[] = {
145 
146         /* headphone connected to HPOUTL, HPOUTR */
147         {"Headphone Jack", NULL, "HPOUTL"},
148         {"Headphone Jack", NULL, "HPOUTR"},
149 
150         /* ext speaker connected to LOUT2, ROUT2 */
151         {"Speaker", NULL, "LOUT2"},
152         {"Speaker", NULL, "ROUT2"},
153 
154         /* internal mic is connected to mic1, mic2 differential - with bias */
155         {"MIC1", NULL, "Mic Bias"},
156         {"MIC2", NULL, "Mic Bias"},
157         {"Mic Bias", NULL, "Mic (Internal)"},
158 
159         /* headset is connected to HPOUTR, and LINEINR with bias */
160         {"Headset Jack", NULL, "HPOUTR"},
161         {"LINEINR", NULL, "Mic Bias"},
162         {"Mic Bias", NULL, "Headset Jack"},
163 };
164 
165 static const char * const jack_function[] = {"Headphone", "Mic", "Line",
166         "Headset", "Off"};
167 static const char * const spk_function[] = {"On", "Off"};
168 static const struct soc_enum tosa_enum[] = {
169         SOC_ENUM_SINGLE_EXT(5, jack_function),
170         SOC_ENUM_SINGLE_EXT(2, spk_function),
171 };
172 
173 static const struct snd_kcontrol_new tosa_controls[] = {
174         SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
175                 tosa_set_jack),
176         SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
177                 tosa_set_spk),
178 };
179 
180 SND_SOC_DAILINK_DEFS(ac97,
181         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
182         DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
183         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
184 
185 SND_SOC_DAILINK_DEFS(ac97_aux,
186         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
187         DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
188         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
189 
190 static struct snd_soc_dai_link tosa_dai[] = {
191 {
192         .name = "AC97",
193         .stream_name = "AC97 HiFi",
194         .ops = &tosa_ops,
195         SND_SOC_DAILINK_REG(ac97),
196 },
197 {
198         .name = "AC97 Aux",
199         .stream_name = "AC97 Aux",
200         .ops = &tosa_ops,
201         SND_SOC_DAILINK_REG(ac97_aux),
202 },
203 };
204 
205 static struct snd_soc_card tosa = {
206         .name = "Tosa",
207         .owner = THIS_MODULE,
208         .dai_link = tosa_dai,
209         .num_links = ARRAY_SIZE(tosa_dai),
210 
211         .controls = tosa_controls,
212         .num_controls = ARRAY_SIZE(tosa_controls),
213         .dapm_widgets = tosa_dapm_widgets,
214         .num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
215         .dapm_routes = audio_map,
216         .num_dapm_routes = ARRAY_SIZE(audio_map),
217         .fully_routed = true,
218 };
219 
220 static int tosa_probe(struct platform_device *pdev)
221 {
222         struct snd_soc_card *card = &tosa;
223         int ret;
224 
225         ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
226                                "Headphone Jack");
227         if (ret)
228                 return ret;
229 
230         card->dev = &pdev->dev;
231 
232         ret = devm_snd_soc_register_card(&pdev->dev, card);
233         if (ret) {
234                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
235                         ret);
236                 gpio_free(TOSA_GPIO_L_MUTE);
237         }
238         return ret;
239 }
240 
241 static int tosa_remove(struct platform_device *pdev)
242 {
243         gpio_free(TOSA_GPIO_L_MUTE);
244         return 0;
245 }
246 
247 static struct platform_driver tosa_driver = {
248         .driver         = {
249                 .name   = "tosa-audio",
250                 .pm     = &snd_soc_pm_ops,
251         },
252         .probe          = tosa_probe,
253         .remove         = tosa_remove,
254 };
255 
256 module_platform_driver(tosa_driver);
257 
258 /* Module information */
259 MODULE_AUTHOR("Richard Purdie");
260 MODULE_DESCRIPTION("ALSA SoC Tosa");
261 MODULE_LICENSE("GPL");
262 MODULE_ALIAS("platform:tosa-audio");
263 

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