sound/soc/tegra/tegra_rt5640.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3 * tegra_rt5640.c - Tegra machine ASoC driver for boards using RT5640 codec.
   4  *
   5  * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
   6  *
   7  * Based on code copyright/by:
   8  *
   9  * Copyright (C) 2010-2012 - NVIDIA, Inc.
  10  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  11  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  12  * Copyright 2007 Wolfson Microelectronics PLC.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/slab.h>
  18 #include <linux/gpio.h>
  19 #include <linux/of_gpio.h>
  20
  21 #include <sound/core.h>
  22 #include <sound/jack.h>
  23 #include <sound/pcm.h>
  24 #include <sound/pcm_params.h>
  25 #include <sound/soc.h>
  26
  27 #include "../codecs/rt5640.h"
  28
  29 #include "tegra_asoc_utils.h"
  30
  31 #define DRV_NAME "tegra-snd-rt5640"
  32
  33 struct tegra_rt5640 {
  34         struct tegra_asoc_utils_data util_data;
  35         int gpio_hp_det;
  36         enum of_gpio_flags gpio_hp_det_flags;
  37 };
  38
  39 static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
  40                                         struct snd_pcm_hw_params *params)
  41 {
  42         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  44         struct snd_soc_card *card = rtd->card;
  45         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
  46         int srate, mclk;
  47         int err;
  48
  49         srate = params_rate(params);
  50         mclk = 256 * srate;
  51
  52         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  53         if (err < 0) {
  54                 dev_err(card->dev, "Can't configure clocks\n");
  55                 return err;
  56         }
  57
  58         err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
  59                                         SND_SOC_CLOCK_IN);
  60         if (err < 0) {
  61                 dev_err(card->dev, "codec_dai clock not set\n");
  62                 return err;
  63         }
  64
  65         return 0;
  66 }
  67
  68 static const struct snd_soc_ops tegra_rt5640_ops = {
  69         .hw_params = tegra_rt5640_asoc_hw_params,
  70 };
  71
  72 static struct snd_soc_jack tegra_rt5640_hp_jack;
  73
  74 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
  75         {
  76                 .pin = "Headphones",
  77                 .mask = SND_JACK_HEADPHONE,
  78         },
  79 };
  80
  81 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
  82         .name = "Headphone detection",
  83         .report = SND_JACK_HEADPHONE,
  84         .debounce_time = 150,
  85         .invert = 1,
  86 };
  87
  88 static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
  89         SND_SOC_DAPM_HP("Headphones", NULL),
  90         SND_SOC_DAPM_SPK("Speakers", NULL),
  91         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  92 };
  93
  94 static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
  95         SOC_DAPM_PIN_SWITCH("Speakers"),
  96 };
  97
  98 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
  99 {
 100         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
 101
 102         snd_soc_card_jack_new(rtd->card, "Headphones", SND_JACK_HEADPHONE,
 103                               &tegra_rt5640_hp_jack, tegra_rt5640_hp_jack_pins,
 104                               ARRAY_SIZE(tegra_rt5640_hp_jack_pins));
 105
 106         if (gpio_is_valid(machine->gpio_hp_det)) {
 107                 tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
 108                 tegra_rt5640_hp_jack_gpio.invert =
 109                         !!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
 110                 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
 111                                                 1,
 112                                                 &tegra_rt5640_hp_jack_gpio);
 113         }
 114
 115         return 0;
 116 }
 117
 118 SND_SOC_DAILINK_DEFS(aif1,
 119         DAILINK_COMP_ARRAY(COMP_EMPTY()),
 120         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5640-aif1")),
 121         DAILINK_COMP_ARRAY(COMP_EMPTY()));
 122
 123 static struct snd_soc_dai_link tegra_rt5640_dai = {
 124         .name = "RT5640",
 125         .stream_name = "RT5640 PCM",
 126         .init = tegra_rt5640_asoc_init,
 127         .ops = &tegra_rt5640_ops,
 128         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 129                         SND_SOC_DAIFMT_CBS_CFS,
 130         SND_SOC_DAILINK_REG(aif1),
 131 };
 132
 133 static struct snd_soc_card snd_soc_tegra_rt5640 = {
 134         .name = "tegra-rt5640",
 135         .owner = THIS_MODULE,
 136         .dai_link = &tegra_rt5640_dai,
 137         .num_links = 1,
 138         .controls = tegra_rt5640_controls,
 139         .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
 140         .dapm_widgets = tegra_rt5640_dapm_widgets,
 141         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
 142         .fully_routed = true,
 143 };
 144
 145 static int tegra_rt5640_probe(struct platform_device *pdev)
 146 {
 147         struct device_node *np = pdev->dev.of_node;
 148         struct snd_soc_card *card = &snd_soc_tegra_rt5640;
 149         struct tegra_rt5640 *machine;
 150         int ret;
 151
 152         machine = devm_kzalloc(&pdev->dev,
 153                         sizeof(struct tegra_rt5640), GFP_KERNEL);
 154         if (!machine)
 155                 return -ENOMEM;
 156
 157         card->dev = &pdev->dev;
 158         snd_soc_card_set_drvdata(card, machine);
 159
 160         machine->gpio_hp_det = of_get_named_gpio_flags(
 161                 np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
 162         if (machine->gpio_hp_det == -EPROBE_DEFER)
 163                 return -EPROBE_DEFER;
 164
 165         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 166         if (ret)
 167                 goto err;
 168
 169         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 170         if (ret)
 171                 goto err;
 172
 173         tegra_rt5640_dai.codecs->of_node = of_parse_phandle(np,
 174                         "nvidia,audio-codec", 0);
 175         if (!tegra_rt5640_dai.codecs->of_node) {
 176                 dev_err(&pdev->dev,
 177                         "Property 'nvidia,audio-codec' missing or invalid\n");
 178                 ret = -EINVAL;
 179                 goto err;
 180         }
 181
 182         tegra_rt5640_dai.cpus->of_node = of_parse_phandle(np,
 183                         "nvidia,i2s-controller", 0);
 184         if (!tegra_rt5640_dai.cpus->of_node) {
 185                 dev_err(&pdev->dev,
 186                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 187                 ret = -EINVAL;
 188                 goto err;
 189         }
 190
 191         tegra_rt5640_dai.platforms->of_node = tegra_rt5640_dai.cpus->of_node;
 192
 193         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 194         if (ret)
 195                 goto err;
 196
 197         ret = snd_soc_register_card(card);
 198         if (ret) {
 199                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 200                         ret);
 201                 goto err_fini_utils;
 202         }
 203
 204         return 0;
 205
 206 err_fini_utils:
 207         tegra_asoc_utils_fini(&machine->util_data);
 208 err:
 209         return ret;
 210 }
 211
 212 static int tegra_rt5640_remove(struct platform_device *pdev)
 213 {
 214         struct snd_soc_card *card = platform_get_drvdata(pdev);
 215         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
 216
 217         snd_soc_unregister_card(card);
 218
 219         tegra_asoc_utils_fini(&machine->util_data);
 220
 221         return 0;
 222 }
 223
 224 static const struct of_device_id tegra_rt5640_of_match[] = {
 225         { .compatible = "nvidia,tegra-audio-rt5640", },
 226         {},
 227 };
 228
 229 static struct platform_driver tegra_rt5640_driver = {
 230         .driver = {
 231                 .name = DRV_NAME,
 232                 .pm = &snd_soc_pm_ops,
 233                 .of_match_table = tegra_rt5640_of_match,
 234         },
 235         .probe = tegra_rt5640_probe,
 236         .remove = tegra_rt5640_remove,
 237 };
 238 module_platform_driver(tegra_rt5640_driver);
 239
 240 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 241 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
 242 MODULE_LICENSE("GPL v2");
 243 MODULE_ALIAS("platform:" DRV_NAME);
 244 MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);