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_asoc_utils.h"
  33
  34 #define DRV_NAME "tegra-alc5632"
  35
  36 struct tegra_alc5632 {
  37         struct tegra_asoc_utils_data util_data;
  38         int gpio_hp_det;
  39 };
  40
  41 static int tegra_alc5632_asoc_hw_params(struct snd_pcm_substream *substream,
  42                                         struct snd_pcm_hw_params *params)
  43 {
  44         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  45         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  46         struct snd_soc_codec *codec = codec_dai->codec;
  47         struct snd_soc_card *card = codec->card;
  48         struct tegra_alc5632 *alc5632 = snd_soc_card_get_drvdata(card);
  49         int srate, mclk;
  50         int err;
  51
  52         srate = params_rate(params);
  53         mclk = 512 * srate;
  54
  55         err = tegra_asoc_utils_set_rate(&alc5632->util_data, srate, mclk);
  56         if (err < 0) {
  57                 dev_err(card->dev, "Can't configure clocks\n");
  58                 return err;
  59         }
  60
  61         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  62                                         SND_SOC_CLOCK_IN);
  63         if (err < 0) {
  64                 dev_err(card->dev, "codec_dai clock not set\n");
  65                 return err;
  66         }
  67
  68         return 0;
  69 }
  70
  71 static struct snd_soc_ops tegra_alc5632_asoc_ops = {
  72         .hw_params = tegra_alc5632_asoc_hw_params,
  73 };
  74
  75 static struct snd_soc_jack tegra_alc5632_hs_jack;
  76
  77 static struct snd_soc_jack_pin tegra_alc5632_hs_jack_pins[] = {
  78         {
  79                 .pin = "Headset Mic",
  80                 .mask = SND_JACK_MICROPHONE,
  81         },
  82         {
  83                 .pin = "Headset Stereophone",
  84                 .mask = SND_JACK_HEADPHONE,
  85         },
  86 };
  87
  88 static struct snd_soc_jack_gpio tegra_alc5632_hp_jack_gpio = {
  89         .name = "Headset detection",
  90         .report = SND_JACK_HEADSET,
  91         .debounce_time = 150,
  92 };
  93
  94 static const struct snd_soc_dapm_widget tegra_alc5632_dapm_widgets[] = {
  95         SND_SOC_DAPM_SPK("Int Spk", NULL),
  96         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  97         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  98         SND_SOC_DAPM_MIC("Digital Mic", NULL),
  99 };
 100
 101 static const struct snd_kcontrol_new tegra_alc5632_controls[] = {
 102         SOC_DAPM_PIN_SWITCH("Int Spk"),
 103 };
 104
 105 static int tegra_alc5632_asoc_init(struct snd_soc_pcm_runtime *rtd)
 106 {
 107         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 108         struct snd_soc_codec *codec = codec_dai->codec;
 109         struct snd_soc_dapm_context *dapm = &codec->dapm;
 110         struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(codec->card);
 111
 112         snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
 113                          &tegra_alc5632_hs_jack);
 114         snd_soc_jack_add_pins(&tegra_alc5632_hs_jack,
 115                         ARRAY_SIZE(tegra_alc5632_hs_jack_pins),
 116                         tegra_alc5632_hs_jack_pins);
 117
 118         if (gpio_is_valid(machine->gpio_hp_det)) {
 119                 tegra_alc5632_hp_jack_gpio.gpio = machine->gpio_hp_det;
 120                 snd_soc_jack_add_gpios(&tegra_alc5632_hs_jack,
 121                                                 1,
 122                                                 &tegra_alc5632_hp_jack_gpio);
 123         }
 124
 125         snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
 126
 127         return 0;
 128 }
 129
 130 static struct snd_soc_dai_link tegra_alc5632_dai = {
 131         .name = "ALC5632",
 132         .stream_name = "ALC5632 PCM",
 133         .codec_dai_name = "alc5632-hifi",
 134         .init = tegra_alc5632_asoc_init,
 135         .ops = &tegra_alc5632_asoc_ops,
 136         .dai_fmt = SND_SOC_DAIFMT_I2S
 137                            | SND_SOC_DAIFMT_NB_NF
 138                            | SND_SOC_DAIFMT_CBS_CFS,
 139 };
 140
 141 static struct snd_soc_card snd_soc_tegra_alc5632 = {
 142         .name = "tegra-alc5632",
 143         .owner = THIS_MODULE,
 144         .dai_link = &tegra_alc5632_dai,
 145         .num_links = 1,
 146         .controls = tegra_alc5632_controls,
 147         .num_controls = ARRAY_SIZE(tegra_alc5632_controls),
 148         .dapm_widgets = tegra_alc5632_dapm_widgets,
 149         .num_dapm_widgets = ARRAY_SIZE(tegra_alc5632_dapm_widgets),
 150         .fully_routed = true,
 151 };
 152
 153 static __devinit int tegra_alc5632_probe(struct platform_device *pdev)
 154 {
 155         struct device_node *np = pdev->dev.of_node;
 156         struct snd_soc_card *card = &snd_soc_tegra_alc5632;
 157         struct tegra_alc5632 *alc5632;
 158         int ret;
 159
 160         alc5632 = devm_kzalloc(&pdev->dev,
 161                         sizeof(struct tegra_alc5632), GFP_KERNEL);
 162         if (!alc5632) {
 163                 dev_err(&pdev->dev, "Can't allocate tegra_alc5632\n");
 164                 ret = -ENOMEM;
 165                 goto err;
 166         }
 167
 168         card->dev = &pdev->dev;
 169         platform_set_drvdata(pdev, card);
 170         snd_soc_card_set_drvdata(card, alc5632);
 171
 172         if (!(pdev->dev.of_node)) {
 173                 dev_err(&pdev->dev, "Must be instantiated using device tree\n");
 174                 ret = -EINVAL;
 175                 goto err;
 176         }
 177
 178         alc5632->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 179         if (alc5632->gpio_hp_det == -EPROBE_DEFER)
 180                 return -EPROBE_DEFER;
 181
 182         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 183         if (ret)
 184                 goto err;
 185
 186         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 187         if (ret)
 188                 goto err;
 189
 190         tegra_alc5632_dai.codec_of_node = of_parse_phandle(
 191                         pdev->dev.of_node, "nvidia,audio-codec", 0);
 192
 193         if (!tegra_alc5632_dai.codec_of_node) {
 194                 dev_err(&pdev->dev,
 195                         "Property 'nvidia,audio-codec' missing or invalid\n");
 196                 ret = -EINVAL;
 197                 goto err;
 198         }
 199
 200         tegra_alc5632_dai.cpu_of_node = of_parse_phandle(
 201                         pdev->dev.of_node, "nvidia,i2s-controller", 0);
 202         if (!tegra_alc5632_dai.cpu_of_node) {
 203                 dev_err(&pdev->dev,
 204                 "Property 'nvidia,i2s-controller' missing or invalid\n");
 205                 ret = -EINVAL;
 206                 goto err;
 207         }
 208
 209         tegra_alc5632_dai.platform_of_node = tegra_alc5632_dai.cpu_of_node;
 210
 211         ret = tegra_asoc_utils_init(&alc5632->util_data, &pdev->dev);
 212         if (ret)
 213                 goto err;
 214
 215         ret = snd_soc_register_card(card);
 216         if (ret) {
 217                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 218                         ret);
 219                 goto err_fini_utils;
 220         }
 221
 222         return 0;
 223
 224 err_fini_utils:
 225         tegra_asoc_utils_fini(&alc5632->util_data);
 226 err:
 227         return ret;
 228 }
 229
 230 static int __devexit tegra_alc5632_remove(struct platform_device *pdev)
 231 {
 232         struct snd_soc_card *card = platform_get_drvdata(pdev);
 233         struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
 234
 235         snd_soc_jack_free_gpios(&tegra_alc5632_hs_jack, 1,
 236                                 &tegra_alc5632_hp_jack_gpio);
 237
 238         snd_soc_unregister_card(card);
 239
 240         tegra_asoc_utils_fini(&machine->util_data);
 241
 242         return 0;
 243 }
 244
 245 static const struct of_device_id tegra_alc5632_of_match[] __devinitconst = {
 246         { .compatible = "nvidia,tegra-audio-alc5632", },
 247         {},
 248 };
 249
 250 static struct platform_driver tegra_alc5632_driver = {
 251         .driver = {
 252                 .name = DRV_NAME,
 253                 .owner = THIS_MODULE,
 254                 .pm = &snd_soc_pm_ops,
 255                 .of_match_table = tegra_alc5632_of_match,
 256         },
 257         .probe = tegra_alc5632_probe,
 258         .remove = __devexit_p(tegra_alc5632_remove),
 259 };
 260 module_platform_driver(tegra_alc5632_driver);
 261
 262 MODULE_AUTHOR("Leon Romanovsky <leon@leon.nu>");
 263 MODULE_DESCRIPTION("Tegra+ALC5632 machine ASoC driver");
 264 MODULE_LICENSE("GPL");
 265 MODULE_ALIAS("platform:" DRV_NAME);
 266 MODULE_DEVICE_TABLE(of, tegra_alc5632_of_match);