sound/soc/pxa/palm27x.c

   1 /*
   2  * linux/sound/soc/pxa/palm27x.c
   3  *
   4  * SoC Audio driver for Palm T|X, T5 and LifeDrive
   5  *
   6  * based on tosa.c
   7  *
   8  * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/device.h>
  19 #include <linux/gpio.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/irq.h>
  22
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/soc.h>
  26 #include <sound/soc-dapm.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <mach/audio.h>
  30 #include <mach/palmasoc.h>
  31
  32 #include "../codecs/wm9712.h"
  33 #include "pxa2xx-pcm.h"
  34 #include "pxa2xx-ac97.h"
  35
  36 static int palm27x_jack_func = 1;
  37 static int palm27x_spk_func = 1;
  38 static int palm27x_ep_gpio = -1;
  39
  40 static void palm27x_ext_control(struct snd_soc_codec *codec)
  41 {
  42         if (!palm27x_spk_func)
  43                 snd_soc_dapm_enable_pin(codec, "Speaker");
  44         else
  45                 snd_soc_dapm_disable_pin(codec, "Speaker");
  46
  47         if (!palm27x_jack_func)
  48                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  49         else
  50                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  51
  52         snd_soc_dapm_sync(codec);
  53 }
  54
  55 static int palm27x_startup(struct snd_pcm_substream *substream)
  56 {
  57         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  58         struct snd_soc_codec *codec = rtd->socdev->codec;
  59
  60         /* check the jack status at stream startup */
  61         palm27x_ext_control(codec);
  62         return 0;
  63 }
  64
  65 static struct snd_soc_ops palm27x_ops = {
  66         .startup = palm27x_startup,
  67 };
  68
  69 static irqreturn_t palm27x_interrupt(int irq, void *v)
  70 {
  71         palm27x_spk_func = gpio_get_value(palm27x_ep_gpio);
  72         palm27x_jack_func = !palm27x_spk_func;
  73         return IRQ_HANDLED;
  74 }
  75
  76 static int palm27x_get_jack(struct snd_kcontrol *kcontrol,
  77         struct snd_ctl_elem_value *ucontrol)
  78 {
  79         ucontrol->value.integer.value[0] = palm27x_jack_func;
  80         return 0;
  81 }
  82
  83 static int palm27x_set_jack(struct snd_kcontrol *kcontrol,
  84         struct snd_ctl_elem_value *ucontrol)
  85 {
  86         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
  87
  88         if (palm27x_jack_func == ucontrol->value.integer.value[0])
  89                 return 0;
  90
  91         palm27x_jack_func = ucontrol->value.integer.value[0];
  92         palm27x_ext_control(codec);
  93         return 1;
  94 }
  95
  96 static int palm27x_get_spk(struct snd_kcontrol *kcontrol,
  97         struct snd_ctl_elem_value *ucontrol)
  98 {
  99         ucontrol->value.integer.value[0] = palm27x_spk_func;
 100         return 0;
 101 }
 102
 103 static int palm27x_set_spk(struct snd_kcontrol *kcontrol,
 104         struct snd_ctl_elem_value *ucontrol)
 105 {
 106         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 107
 108         if (palm27x_spk_func == ucontrol->value.integer.value[0])
 109                 return 0;
 110
 111         palm27x_spk_func = ucontrol->value.integer.value[0];
 112         palm27x_ext_control(codec);
 113         return 1;
 114 }
 115
 116 /* PalmTX machine dapm widgets */
 117 static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {
 118         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 119         SND_SOC_DAPM_SPK("Speaker", NULL),
 120 };
 121
 122 /* PalmTX audio map */
 123 static const struct snd_soc_dapm_route audio_map[] = {
 124         /* headphone connected to HPOUTL, HPOUTR */
 125         {"Headphone Jack", NULL, "HPOUTL"},
 126         {"Headphone Jack", NULL, "HPOUTR"},
 127
 128         /* ext speaker connected to ROUT2, LOUT2 */
 129         {"Speaker", NULL, "LOUT2"},
 130         {"Speaker", NULL, "ROUT2"},
 131 };
 132
 133 static const char *jack_function[] = {"Headphone", "Off"};
 134 static const char *spk_function[] = {"On", "Off"};
 135 static const struct soc_enum palm27x_enum[] = {
 136         SOC_ENUM_SINGLE_EXT(2, jack_function),
 137         SOC_ENUM_SINGLE_EXT(2, spk_function),
 138 };
 139
 140 static const struct snd_kcontrol_new palm27x_controls[] = {
 141         SOC_ENUM_EXT("Jack Function", palm27x_enum[0], palm27x_get_jack,
 142                 palm27x_set_jack),
 143         SOC_ENUM_EXT("Speaker Function", palm27x_enum[1], palm27x_get_spk,
 144                 palm27x_set_spk),
 145 };
 146
 147 static int palm27x_ac97_init(struct snd_soc_codec *codec)
 148 {
 149         int i, err;
 150
 151         snd_soc_dapm_nc_pin(codec, "OUT3");
 152         snd_soc_dapm_nc_pin(codec, "MONOOUT");
 153
 154         /* add palm27x specific controls */
 155         for (i = 0; i < ARRAY_SIZE(palm27x_controls); i++) {
 156                 err = snd_ctl_add(codec->card,
 157                                 snd_soc_cnew(&palm27x_controls[i],
 158                                                 codec, NULL));
 159                 if (err < 0)
 160                         return err;
 161         }
 162
 163         /* add palm27x specific widgets */
 164         snd_soc_dapm_new_controls(codec, palm27x_dapm_widgets,
 165                                 ARRAY_SIZE(palm27x_dapm_widgets));
 166
 167         /* set up palm27x specific audio path audio_map */
 168         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 169
 170         snd_soc_dapm_sync(codec);
 171         return 0;
 172 }
 173
 174 static struct snd_soc_dai_link palm27x_dai[] = {
 175 {
 176         .name = "AC97 HiFi",
 177         .stream_name = "AC97 HiFi",
 178         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 179         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
 180         .init = palm27x_ac97_init,
 181         .ops = &palm27x_ops,
 182 },
 183 {
 184         .name = "AC97 Aux",
 185         .stream_name = "AC97 Aux",
 186         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 187         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 188         .ops = &palm27x_ops,
 189 },
 190 };
 191
 192 static struct snd_soc_card palm27x_asoc = {
 193         .name = "Palm/PXA27x",
 194         .platform = &pxa2xx_soc_platform,
 195         .dai_link = palm27x_dai,
 196         .num_links = ARRAY_SIZE(palm27x_dai),
 197 };
 198
 199 static struct snd_soc_device palm27x_snd_devdata = {
 200         .card = &palm27x_asoc,
 201         .codec_dev = &soc_codec_dev_wm9712,
 202 };
 203
 204 static struct platform_device *palm27x_snd_device;
 205
 206 static int __init palm27x_asoc_init(void)
 207 {
 208         int ret;
 209
 210         if (!(machine_is_palmtx() || machine_is_palmt5() ||
 211                 machine_is_palmld()))
 212                 return -ENODEV;
 213
 214         ret = gpio_request(palm27x_ep_gpio, "Headphone Jack");
 215         if (ret)
 216                 return ret;
 217         ret = gpio_direction_input(palm27x_ep_gpio);
 218         if (ret)
 219                 goto err_alloc;
 220
 221         if (request_irq(gpio_to_irq(palm27x_ep_gpio), palm27x_interrupt,
 222                         IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 223                         "Headphone jack", NULL))
 224                 goto err_alloc;
 225
 226         palm27x_snd_device = platform_device_alloc("soc-audio", -1);
 227         if (!palm27x_snd_device) {
 228                 ret = -ENOMEM;
 229                 goto err_dev;
 230         }
 231
 232         platform_set_drvdata(palm27x_snd_device, &palm27x_snd_devdata);
 233         palm27x_snd_devdata.dev = &palm27x_snd_device->dev;
 234         ret = platform_device_add(palm27x_snd_device);
 235
 236         if (ret != 0)
 237                 goto put_device;
 238
 239         return 0;
 240
 241 put_device:
 242         platform_device_put(palm27x_snd_device);
 243 err_dev:
 244         free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
 245 err_alloc:
 246         gpio_free(palm27x_ep_gpio);
 247
 248         return ret;
 249 }
 250
 251 static void __exit palm27x_asoc_exit(void)
 252 {
 253         free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
 254         gpio_free(palm27x_ep_gpio);
 255         platform_device_unregister(palm27x_snd_device);
 256 }
 257
 258 void __init palm27x_asoc_set_pdata(struct palm27x_asoc_info *data)
 259 {
 260         palm27x_ep_gpio = data->jack_gpio;
 261 }
 262
 263 module_init(palm27x_asoc_init);
 264 module_exit(palm27x_asoc_exit);
 265
 266 /* Module information */
 267 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
 268 MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
 269 MODULE_LICENSE("GPL");