sound/soc/tegra/tegra_alc5632.c

   1 /*
   2  * tegra_alc5632.c  --  Toshiba AC100(PAZ00) machine ASoC driver
   3  *
   4  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
   5  * Copyright (C) 2012 - NVIDIA, Inc.
   6  *
   7  * Authors:  Leon Romanovsky <leon@leon.nu>
   8  *           Andrey Danin <danindrey@mail.ru>
   9  *           Marc Dietrich <marvin24@gmx.de>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <asm/mach-types.h>
  17
  18 #include <linux/module.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/slab.h>
  21 #include <linux/gpio.h>
  22 #include <linux/of_gpio.h>
  23
  24 #include <sound/core.h>
  25 #include <sound/jack.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/soc.h>
  29
  30 #include "../codecs/alc5632.h"
  31
  32 #include "tegra_das.h"
  33 #include "tegra_i2s.h"
  34 #include "tegra_pcm.h"
  35 #include "tegra_asoc_utils.h"
  36
  37 #define DRV_NAME "tegra-alc5632"
  38
  39 #define GPIO_HP_DET     BIT(0)
  40
  41 struct tegra_alc5632 {
  42         struct tegra_asoc_utils_data util_data;
  43         int gpio_requested;
  44         int gpio_hp_det;
  45 };
  46
  47 static int tegra_alc5632_asoc_hw_params(struct snd_pcm_substream *substream,
  48                                         struct snd_pcm_hw_params *params)
  49 {
  50         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  51         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  52         struct snd_soc_codec *codec = rtd->codec;
  53         struct snd_soc_card *card = codec->card;
  54         struct tegra_alc5632 *alc5632 = snd_soc_card_get_drvdata(card);
  55         int srate, mclk;
  56         int err;
  57
  58         srate = params_rate(params);
  59         mclk = 512 * srate;
  60
  61         err = tegra_asoc_utils_set_rate(&alc5632->util_data, srate, mclk);
  62         if (err < 0) {
  63                 dev_err(card->dev, "Can't configure clocks\n");
  64                 return err;
  65         }
  66
  67         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  68                                         SND_SOC_CLOCK_IN);
  69         if (err < 0) {
  70                 dev_err(card->dev, "codec_dai clock not set\n");
  71                 return err;
  72         }
  73
  74         return 0;
  75 }
  76
  77 static struct snd_soc_ops tegra_alc5632_asoc_ops = {
  78         .hw_params = tegra_alc5632_asoc_hw_params,
  79 };
  80
  81 static struct snd_soc_jack tegra_alc5632_hs_jack;
  82
  83 static struct snd_soc_jack_pin tegra_alc5632_hs_jack_pins[] = {
  84         {
  85                 .pin = "Headset Mic",
  86                 .mask = SND_JACK_MICROPHONE,
  87         },
  88         {
  89                 .pin = "Headset Stereophone",
  90                 .mask = SND_JACK_HEADPHONE,
  91         },
  92 };
  93
  94 static struct snd_soc_jack_gpio tegra_alc5632_hp_jack_gpio = {
  95         .name = "Headset detection",
  96         .report = SND_JACK_HEADSET,
  97         .debounce_time = 150,
  98         .invert = 1,
  99 };
 100
 101 static const struct snd_soc_dapm_widget tegra_alc5632_dapm_widgets[] = {
 102         SND_SOC_DAPM_SPK("Int Spk", NULL),
 103         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 104         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 105         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 106 };
 107
 108 static const struct snd_kcontrol_new tegra_alc5632_controls[] = {
 109         SOC_DAPM_PIN_SWITCH("Int Spk"),
 110 };
 111
 112 static int tegra_alc5632_asoc_init(struct snd_soc_pcm_runtime *rtd)
 113 {
 114         struct snd_soc_codec *codec = rtd->codec;
 115         struct snd_soc_dapm_context *dapm = &codec->dapm;
 116         struct device_node *np = codec->card->dev->of_node;
 117         struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(codec->card);
 118
 119         snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
 120                          &tegra_alc5632_hs_jack);
 121         snd_soc_jack_add_pins(&tegra_alc5632_hs_jack,
 122                         ARRAY_SIZE(tegra_alc5632_hs_jack_pins),
 123                         tegra_alc5632_hs_jack_pins);
 124
 125         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 126
 127         if (gpio_is_valid(machine->gpio_hp_det)) {
 128                 tegra_alc5632_hp_jack_gpio.gpio = machine->gpio_hp_det;
 129                 snd_soc_jack_add_gpios(&tegra_alc5632_hs_jack,
 130                                                 1,
 131                                                 &tegra_alc5632_hp_jack_gpio);
 132                 machine->gpio_requested |= GPIO_HP_DET;
 133         }
 134
 135         snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
 136
 137         return 0;
 138 }
 139
 140 static struct snd_soc_dai_link tegra_alc5632_dai = {
 141         .name = "ALC5632",
 142         .stream_name = "ALC5632 PCM",
 143         .codec_dai_name = "alc5632-hifi",
 144         .init = tegra_alc5632_asoc_init,
 145         .ops = &tegra_alc5632_asoc_ops,
 146         .dai_fmt = SND_SOC_DAIFMT_I2S
 147                            | SND_SOC_DAIFMT_NB_NF
 148                            | SND_SOC_DAIFMT_CBS_CFS,
 149 };
 150
 151 static struct snd_soc_card snd_soc_tegra_alc5632 = {
 152         .name = "tegra-alc5632",
 153         .owner = THIS_MODULE,
 154         .dai_link = &tegra_alc5632_dai,
 155         .num_links = 1,
 156         .controls = tegra_alc5632_controls,
 157         .num_controls = ARRAY_SIZE(tegra_alc5632_controls),
 158         .dapm_widgets = tegra_alc5632_dapm_widgets,
 159         .num_dapm_widgets = ARRAY_SIZE(tegra_alc5632_dapm_widgets),
 160         .fully_routed = true,
 161 };
 162
 163 static __devinit int tegra_alc5632_probe(struct platform_device *pdev)
 164 {
 165         struct snd_soc_card *card = &snd_soc_tegra_alc5632;
 166         struct tegra_alc5632 *alc5632;
 167         int ret;
 168
 169         alc5632 = devm_kzalloc(&pdev->dev,
 170                         sizeof(struct tegra_alc5632), GFP_KERNEL);
 171         if (!alc5632) {
 172                 dev_err(&pdev->dev, "Can't allocate tegra_alc5632\n");
 173                 ret = -ENOMEM;
 174                 goto err;
 175         }
 176
 177         card->dev = &pdev->dev;
 178         platform_set_drvdata(pdev, card);
 179         snd_soc_card_set_drvdata(card, alc5632);
 180
 181         if (!(pdev->dev.of_node)) {
 182                 dev_err(&pdev->dev, "Must be instantiated using device tree\n");
 183                 ret = -EINVAL;
 184                 goto err;
 185         }
 186
 187         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 188         if (ret)
 189                 goto err;
 190
 191         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 192         if (ret)
 193                 goto err;
 194
 195         tegra_alc5632_dai.codec_of_node = of_parse_phandle(
 196                         pdev->dev.of_node, "nvidia,audio-codec", 0);
 197
 198         if (!tegra_alc5632_dai.codec_of_node) {
 199                 dev_err(&pdev->dev,
 200                         "Property 'nvidia,audio-codec' missing or invalid\n");
 201                 ret = -EINVAL;
 202                 goto err;
 203         }
 204
 205         tegra_alc5632_dai.cpu_dai_of_node = of_parse_phandle(
 206                         pdev->dev.of_node, "nvidia,i2s-controller", 0);
 207         if (!tegra_alc5632_dai.cpu_dai_of_node) {
 208                 dev_err(&pdev->dev,
 209                 "Property 'nvidia,i2s-controller' missing or invalid\n");
 210                 ret = -EINVAL;
 211                 goto err;
 212         }
 213
 214         tegra_alc5632_dai.platform_of_node = tegra_alc5632_dai.cpu_dai_of_node;
 215
 216         ret = tegra_asoc_utils_init(&alc5632->util_data, &pdev->dev);
 217         if (ret)
 218                 goto err;
 219
 220         ret = snd_soc_register_card(card);
 221         if (ret) {
 222                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 223                         ret);
 224                 goto err_fini_utils;
 225         }
 226
 227         return 0;
 228
 229 err_fini_utils:
 230         tegra_asoc_utils_fini(&alc5632->util_data);
 231 err:
 232         return ret;
 233 }
 234
 235 static int __devexit tegra_alc5632_remove(struct platform_device *pdev)
 236 {
 237         struct snd_soc_card *card = platform_get_drvdata(pdev);
 238         struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
 239
 240         if (machine->gpio_requested & GPIO_HP_DET)
 241                 snd_soc_jack_free_gpios(&tegra_alc5632_hs_jack,
 242                                         1,
 243                                         &tegra_alc5632_hp_jack_gpio);
 244         machine->gpio_requested = 0;
 245
 246         snd_soc_unregister_card(card);
 247
 248         tegra_asoc_utils_fini(&machine->util_data);
 249
 250         return 0;
 251 }
 252
 253 static const struct of_device_id tegra_alc5632_of_match[] __devinitconst = {
 254         { .compatible = "nvidia,tegra-audio-alc5632", },
 255         {},
 256 };
 257
 258 static struct platform_driver tegra_alc5632_driver = {
 259         .driver = {
 260                 .name = DRV_NAME,
 261                 .owner = THIS_MODULE,
 262                 .pm = &snd_soc_pm_ops,
 263                 .of_match_table = tegra_alc5632_of_match,
 264         },
 265         .probe = tegra_alc5632_probe,
 266         .remove = __devexit_p(tegra_alc5632_remove),
 267 };
 268 module_platform_driver(tegra_alc5632_driver);
 269
 270 MODULE_AUTHOR("Leon Romanovsky <leon@leon.nu>");
 271 MODULE_DESCRIPTION("Tegra+ALC5632 machine ASoC driver");
 272 MODULE_LICENSE("GPL");
 273 MODULE_ALIAS("platform:" DRV_NAME);
 274 MODULE_DEVICE_TABLE(of, tegra_alc5632_of_match);