sound/soc/pxa/tosa.c

   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 <[email protected]>
   9  *          Richard Purdie <[email protected]>
  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 static struct snd_soc_dai_link tosa_dai[] = {
 181 {
 182         .name = "AC97",
 183         .stream_name = "AC97 HiFi",
 184         .cpu_dai_name = "pxa2xx-ac97",
 185         .codec_dai_name = "wm9712-hifi",
 186         .platform_name = "pxa-pcm-audio",
 187         .codec_name = "wm9712-codec",
 188         .ops = &tosa_ops,
 189 },
 190 {
 191         .name = "AC97 Aux",
 192         .stream_name = "AC97 Aux",
 193         .cpu_dai_name = "pxa2xx-ac97-aux",
 194         .codec_dai_name = "wm9712-aux",
 195         .platform_name = "pxa-pcm-audio",
 196         .codec_name = "wm9712-codec",
 197         .ops = &tosa_ops,
 198 },
 199 };
 200
 201 static struct snd_soc_card tosa = {
 202         .name = "Tosa",
 203         .owner = THIS_MODULE,
 204         .dai_link = tosa_dai,
 205         .num_links = ARRAY_SIZE(tosa_dai),
 206
 207         .controls = tosa_controls,
 208         .num_controls = ARRAY_SIZE(tosa_controls),
 209         .dapm_widgets = tosa_dapm_widgets,
 210         .num_dapm_widgets = ARRAY_SIZE(tosa_dapm_widgets),
 211         .dapm_routes = audio_map,
 212         .num_dapm_routes = ARRAY_SIZE(audio_map),
 213         .fully_routed = true,
 214 };
 215
 216 static int tosa_probe(struct platform_device *pdev)
 217 {
 218         struct snd_soc_card *card = &tosa;
 219         int ret;
 220
 221         ret = gpio_request_one(TOSA_GPIO_L_MUTE, GPIOF_OUT_INIT_LOW,
 222                                "Headphone Jack");
 223         if (ret)
 224                 return ret;
 225
 226         card->dev = &pdev->dev;
 227
 228         ret = devm_snd_soc_register_card(&pdev->dev, card);
 229         if (ret) {
 230                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 231                         ret);
 232                 gpio_free(TOSA_GPIO_L_MUTE);
 233         }
 234         return ret;
 235 }
 236
 237 static int tosa_remove(struct platform_device *pdev)
 238 {
 239         gpio_free(TOSA_GPIO_L_MUTE);
 240         return 0;
 241 }
 242
 243 static struct platform_driver tosa_driver = {
 244         .driver         = {
 245                 .name   = "tosa-audio",
 246                 .pm     = &snd_soc_pm_ops,
 247         },
 248         .probe          = tosa_probe,
 249         .remove         = tosa_remove,
 250 };
 251
 252 module_platform_driver(tosa_driver);
 253
 254 /* Module information */
 255 MODULE_AUTHOR("Richard Purdie");
 256 MODULE_DESCRIPTION("ALSA SoC Tosa");
 257 MODULE_LICENSE("GPL");
 258 MODULE_ALIAS("platform:tosa-audio");