sound/soc/tegra/tegra_max98090.c

   1 /*
   2  * Tegra machine ASoC driver for boards using a MAX90809 CODEC.
   3  *
   4  * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Based on code copyright/by:
  19  *
  20  * Copyright (C) 2010-2012 - NVIDIA, Inc.
  21  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  22  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  23  * Copyright 2007 Wolfson Microelectronics PLC.
  24  */
  25
  26 #include <linux/module.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/slab.h>
  29 #include <linux/gpio.h>
  30 #include <linux/of_gpio.h>
  31
  32 #include <sound/core.h>
  33 #include <sound/jack.h>
  34 #include <sound/pcm.h>
  35 #include <sound/pcm_params.h>
  36 #include <sound/soc.h>
  37
  38 #include "tegra_asoc_utils.h"
  39
  40 #define DRV_NAME "tegra-snd-max98090"
  41
  42 struct tegra_max98090 {
  43         struct tegra_asoc_utils_data util_data;
  44         int gpio_hp_det;
  45 };
  46
  47 static int tegra_max98090_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 = codec_dai->codec;
  53         struct snd_soc_card *card = codec->card;
  54         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
  55         int srate, mclk;
  56         int err;
  57
  58         srate = params_rate(params);
  59         switch (srate) {
  60         case 8000:
  61         case 16000:
  62         case 24000:
  63         case 32000:
  64         case 48000:
  65         case 64000:
  66         case 96000:
  67                 mclk = 12288000;
  68                 break;
  69         case 11025:
  70         case 22050:
  71         case 44100:
  72         case 88200:
  73                 mclk = 11289600;
  74                 break;
  75         default:
  76                 mclk = 12000000;
  77                 break;
  78         }
  79
  80         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  81         if (err < 0) {
  82                 dev_err(card->dev, "Can't configure clocks\n");
  83                 return err;
  84         }
  85
  86         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
  87                                         SND_SOC_CLOCK_IN);
  88         if (err < 0) {
  89                 dev_err(card->dev, "codec_dai clock not set\n");
  90                 return err;
  91         }
  92
  93         return 0;
  94 }
  95
  96 static struct snd_soc_ops tegra_max98090_ops = {
  97         .hw_params = tegra_max98090_asoc_hw_params,
  98 };
  99
 100 static struct snd_soc_jack tegra_max98090_hp_jack;
 101
 102 static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
 103         {
 104                 .pin = "Headphones",
 105                 .mask = SND_JACK_HEADPHONE,
 106         },
 107 };
 108
 109 static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
 110         .name = "Headphone detection",
 111         .report = SND_JACK_HEADPHONE,
 112         .debounce_time = 150,
 113         .invert = 1,
 114 };
 115
 116 static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
 117         SND_SOC_DAPM_HP("Headphones", NULL),
 118         SND_SOC_DAPM_SPK("Speakers", NULL),
 119         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 120 };
 121
 122 static const struct snd_kcontrol_new tegra_max98090_controls[] = {
 123         SOC_DAPM_PIN_SWITCH("Speakers"),
 124 };
 125
 126 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
 127 {
 128         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 129         struct snd_soc_codec *codec = codec_dai->codec;
 130         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(codec->card);
 131
 132         if (gpio_is_valid(machine->gpio_hp_det)) {
 133                 snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
 134                                 &tegra_max98090_hp_jack);
 135                 snd_soc_jack_add_pins(&tegra_max98090_hp_jack,
 136                                 ARRAY_SIZE(tegra_max98090_hp_jack_pins),
 137                                 tegra_max98090_hp_jack_pins);
 138
 139                 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
 140                 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
 141                                         1,
 142                                         &tegra_max98090_hp_jack_gpio);
 143         }
 144
 145         return 0;
 146 }
 147
 148 static int tegra_max98090_card_remove(struct snd_soc_card *card)
 149 {
 150         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
 151
 152         if (gpio_is_valid(machine->gpio_hp_det)) {
 153                 snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
 154                                         &tegra_max98090_hp_jack_gpio);
 155         }
 156
 157         return 0;
 158 }
 159
 160 static struct snd_soc_dai_link tegra_max98090_dai = {
 161         .name = "max98090",
 162         .stream_name = "max98090 PCM",
 163         .codec_dai_name = "HiFi",
 164         .init = tegra_max98090_asoc_init,
 165         .ops = &tegra_max98090_ops,
 166         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 167                         SND_SOC_DAIFMT_CBS_CFS,
 168 };
 169
 170 static struct snd_soc_card snd_soc_tegra_max98090 = {
 171         .name = "tegra-max98090",
 172         .owner = THIS_MODULE,
 173         .remove = tegra_max98090_card_remove,
 174         .dai_link = &tegra_max98090_dai,
 175         .num_links = 1,
 176         .controls = tegra_max98090_controls,
 177         .num_controls = ARRAY_SIZE(tegra_max98090_controls),
 178         .dapm_widgets = tegra_max98090_dapm_widgets,
 179         .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
 180         .fully_routed = true,
 181 };
 182
 183 static int tegra_max98090_probe(struct platform_device *pdev)
 184 {
 185         struct device_node *np = pdev->dev.of_node;
 186         struct snd_soc_card *card = &snd_soc_tegra_max98090;
 187         struct tegra_max98090 *machine;
 188         int ret;
 189
 190         machine = devm_kzalloc(&pdev->dev,
 191                         sizeof(struct tegra_max98090), GFP_KERNEL);
 192         if (!machine) {
 193                 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
 194                 return -ENOMEM;
 195         }
 196
 197         card->dev = &pdev->dev;
 198         platform_set_drvdata(pdev, card);
 199         snd_soc_card_set_drvdata(card, machine);
 200
 201         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 202         if (machine->gpio_hp_det == -EPROBE_DEFER)
 203                 return -EPROBE_DEFER;
 204
 205         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 206         if (ret)
 207                 goto err;
 208
 209         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 210         if (ret)
 211                 goto err;
 212
 213         tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
 214                         "nvidia,audio-codec", 0);
 215         if (!tegra_max98090_dai.codec_of_node) {
 216                 dev_err(&pdev->dev,
 217                         "Property 'nvidia,audio-codec' missing or invalid\n");
 218                 ret = -EINVAL;
 219                 goto err;
 220         }
 221
 222         tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
 223                         "nvidia,i2s-controller", 0);
 224         if (!tegra_max98090_dai.cpu_of_node) {
 225                 dev_err(&pdev->dev,
 226                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 227                 ret = -EINVAL;
 228                 goto err;
 229         }
 230
 231         tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
 232
 233         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 234         if (ret)
 235                 goto err;
 236
 237         ret = snd_soc_register_card(card);
 238         if (ret) {
 239                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 240                         ret);
 241                 goto err_fini_utils;
 242         }
 243
 244         return 0;
 245
 246 err_fini_utils:
 247         tegra_asoc_utils_fini(&machine->util_data);
 248 err:
 249         return ret;
 250 }
 251
 252 static int tegra_max98090_remove(struct platform_device *pdev)
 253 {
 254         struct snd_soc_card *card = platform_get_drvdata(pdev);
 255         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
 256
 257         snd_soc_unregister_card(card);
 258
 259         tegra_asoc_utils_fini(&machine->util_data);
 260
 261         return 0;
 262 }
 263
 264 static const struct of_device_id tegra_max98090_of_match[] = {
 265         { .compatible = "nvidia,tegra-audio-max98090", },
 266         {},
 267 };
 268
 269 static struct platform_driver tegra_max98090_driver = {
 270         .driver = {
 271                 .name = DRV_NAME,
 272                 .owner = THIS_MODULE,
 273                 .pm = &snd_soc_pm_ops,
 274                 .of_match_table = tegra_max98090_of_match,
 275         },
 276         .probe = tegra_max98090_probe,
 277         .remove = tegra_max98090_remove,
 278 };
 279 module_platform_driver(tegra_max98090_driver);
 280
 281 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 282 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
 283 MODULE_LICENSE("GPL v2");
 284 MODULE_ALIAS("platform:" DRV_NAME);
 285 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);