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->card->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 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         err = snd_soc_add_controls(codec, palm27x_controls,
 156                                 ARRAY_SIZE(palm27x_controls));
 157         if (err < 0)
 158                 return err;
 159
 160         /* add palm27x specific widgets */
 161         snd_soc_dapm_new_controls(codec, palm27x_dapm_widgets,
 162                                 ARRAY_SIZE(palm27x_dapm_widgets));
 163
 164         /* set up palm27x specific audio path audio_map */
 165         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 166
 167         snd_soc_dapm_sync(codec);
 168         return 0;
 169 }
 170
 171 static struct snd_soc_dai_link palm27x_dai[] = {
 172 {
 173         .name = "AC97 HiFi",
 174         .stream_name = "AC97 HiFi",
 175         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 176         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
 177         .init = palm27x_ac97_init,
 178         .ops = &palm27x_ops,
 179 },
 180 {
 181         .name = "AC97 Aux",
 182         .stream_name = "AC97 Aux",
 183         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 184         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
 185         .ops = &palm27x_ops,
 186 },
 187 };
 188
 189 static struct snd_soc_card palm27x_asoc = {
 190         .name = "Palm/PXA27x",
 191         .platform = &pxa2xx_soc_platform,
 192         .dai_link = palm27x_dai,
 193         .num_links = ARRAY_SIZE(palm27x_dai),
 194 };
 195
 196 static struct snd_soc_device palm27x_snd_devdata = {
 197         .card = &palm27x_asoc,
 198         .codec_dev = &soc_codec_dev_wm9712,
 199 };
 200
 201 static struct platform_device *palm27x_snd_device;
 202
 203 static int palm27x_asoc_probe(struct platform_device *pdev)
 204 {
 205         int ret;
 206
 207         if (!(machine_is_palmtx() || machine_is_palmt5() ||
 208                 machine_is_palmld() || machine_is_palmte2()))
 209                 return -ENODEV;
 210
 211         if (pdev->dev.platform_data)
 212                 palm27x_ep_gpio = ((struct palm27x_asoc_info *)
 213                         (pdev->dev.platform_data))->jack_gpio;
 214
 215         ret = gpio_request(palm27x_ep_gpio, "Headphone Jack");
 216         if (ret)
 217                 return ret;
 218         ret = gpio_direction_input(palm27x_ep_gpio);
 219         if (ret)
 220                 goto err_alloc;
 221
 222         if (request_irq(gpio_to_irq(palm27x_ep_gpio), palm27x_interrupt,
 223                         IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 224                         "Headphone jack", NULL))
 225                 goto err_alloc;
 226
 227         palm27x_snd_device = platform_device_alloc("soc-audio", -1);
 228         if (!palm27x_snd_device) {
 229                 ret = -ENOMEM;
 230                 goto err_dev;
 231         }
 232
 233         platform_set_drvdata(palm27x_snd_device, &palm27x_snd_devdata);
 234         palm27x_snd_devdata.dev = &palm27x_snd_device->dev;
 235         ret = platform_device_add(palm27x_snd_device);
 236
 237         if (ret != 0)
 238                 goto put_device;
 239
 240         return 0;
 241
 242 put_device:
 243         platform_device_put(palm27x_snd_device);
 244 err_dev:
 245         free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
 246 err_alloc:
 247         gpio_free(palm27x_ep_gpio);
 248
 249         return ret;
 250 }
 251
 252 static int __devexit palm27x_asoc_remove(struct platform_device *pdev)
 253 {
 254         free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);
 255         gpio_free(palm27x_ep_gpio);
 256         platform_device_unregister(palm27x_snd_device);
 257         return 0;
 258 }
 259
 260 static struct platform_driver palm27x_wm9712_driver = {
 261         .probe          = palm27x_asoc_probe,
 262         .remove         = __devexit_p(palm27x_asoc_remove),
 263         .driver         = {
 264                 .name           = "palm27x-asoc",
 265                 .owner          = THIS_MODULE,
 266         },
 267 };
 268
 269 static int __init palm27x_asoc_init(void)
 270 {
 271         return platform_driver_register(&palm27x_wm9712_driver);
 272 }
 273
 274 static void __exit palm27x_asoc_exit(void)
 275 {
 276         platform_driver_unregister(&palm27x_wm9712_driver);
 277 }
 278
 279 module_init(palm27x_asoc_init);
 280 module_exit(palm27x_asoc_exit);
 281
 282 /* Module information */
 283 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
 284 MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
 285 MODULE_LICENSE("GPL");