linux/sound/soc/tegra/tegra_sgtl5000.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec
   4 *
   5 * Author: Marcel Ziswiler <marcel@ziswiler.com>
   6 *
   7 * Based on code copyright/by:
   8 *
   9 * Copyright (C) 2010-2012 - NVIDIA, Inc.
  10 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  11 * Copyright 2007 Wolfson Microelectronics PLC.
  12 */
  13
  14#include <linux/module.h>
  15#include <linux/platform_device.h>
  16#include <linux/slab.h>
  17#include <linux/gpio.h>
  18#include <linux/of_gpio.h>
  19
  20#include <sound/core.h>
  21#include <sound/pcm.h>
  22#include <sound/pcm_params.h>
  23#include <sound/soc.h>
  24
  25#include "../codecs/sgtl5000.h"
  26
  27#include "tegra_asoc_utils.h"
  28
  29#define DRV_NAME "tegra-snd-sgtl5000"
  30
  31struct tegra_sgtl5000 {
  32        struct tegra_asoc_utils_data util_data;
  33};
  34
  35static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream,
  36                                        struct snd_pcm_hw_params *params)
  37{
  38        struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  39        struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  40        struct snd_soc_card *card = rtd->card;
  41        struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
  42        int srate, mclk;
  43        int err;
  44
  45        srate = params_rate(params);
  46        switch (srate) {
  47        case 11025:
  48        case 22050:
  49        case 44100:
  50        case 88200:
  51                mclk = 11289600;
  52                break;
  53        default:
  54                mclk = 12288000;
  55                break;
  56        }
  57
  58        err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  59        if (err < 0) {
  60                dev_err(card->dev, "Can't configure clocks\n");
  61                return err;
  62        }
  63
  64        err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk,
  65                                     SND_SOC_CLOCK_IN);
  66        if (err < 0) {
  67                dev_err(card->dev, "codec_dai clock not set\n");
  68                return err;
  69        }
  70
  71        return 0;
  72}
  73
  74static const struct snd_soc_ops tegra_sgtl5000_ops = {
  75        .hw_params = tegra_sgtl5000_hw_params,
  76};
  77
  78static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = {
  79        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  80        SND_SOC_DAPM_LINE("Line In Jack", NULL),
  81        SND_SOC_DAPM_MIC("Mic Jack", NULL),
  82};
  83
  84SND_SOC_DAILINK_DEFS(hifi,
  85        DAILINK_COMP_ARRAY(COMP_EMPTY()),
  86        DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
  87        DAILINK_COMP_ARRAY(COMP_EMPTY()));
  88
  89static struct snd_soc_dai_link tegra_sgtl5000_dai = {
  90        .name = "sgtl5000",
  91        .stream_name = "HiFi",
  92        .ops = &tegra_sgtl5000_ops,
  93        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  94                        SND_SOC_DAIFMT_CBS_CFS,
  95        SND_SOC_DAILINK_REG(hifi),
  96};
  97
  98static struct snd_soc_card snd_soc_tegra_sgtl5000 = {
  99        .name = "tegra-sgtl5000",
 100        .owner = THIS_MODULE,
 101        .dai_link = &tegra_sgtl5000_dai,
 102        .num_links = 1,
 103        .dapm_widgets = tegra_sgtl5000_dapm_widgets,
 104        .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
 105        .fully_routed = true,
 106};
 107
 108static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
 109{
 110        struct device_node *np = pdev->dev.of_node;
 111        struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
 112        struct tegra_sgtl5000 *machine;
 113        int ret;
 114
 115        machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
 116                               GFP_KERNEL);
 117        if (!machine)
 118                return -ENOMEM;
 119
 120        card->dev = &pdev->dev;
 121        snd_soc_card_set_drvdata(card, machine);
 122
 123        ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 124        if (ret)
 125                goto err;
 126
 127        ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 128        if (ret)
 129                goto err;
 130
 131        tegra_sgtl5000_dai.codecs->of_node = of_parse_phandle(np,
 132                        "nvidia,audio-codec", 0);
 133        if (!tegra_sgtl5000_dai.codecs->of_node) {
 134                dev_err(&pdev->dev,
 135                        "Property 'nvidia,audio-codec' missing or invalid\n");
 136                ret = -EINVAL;
 137                goto err;
 138        }
 139
 140        tegra_sgtl5000_dai.cpus->of_node = of_parse_phandle(np,
 141                        "nvidia,i2s-controller", 0);
 142        if (!tegra_sgtl5000_dai.cpus->of_node) {
 143                dev_err(&pdev->dev,
 144                        "Property 'nvidia,i2s-controller' missing/invalid\n");
 145                ret = -EINVAL;
 146                goto err_put_codec_of_node;
 147        }
 148
 149        tegra_sgtl5000_dai.platforms->of_node = tegra_sgtl5000_dai.cpus->of_node;
 150
 151        ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 152        if (ret)
 153                goto err_put_cpu_of_node;
 154
 155        ret = snd_soc_register_card(card);
 156        if (ret) {
 157                dev_err_probe(&pdev->dev, ret,
 158                              "snd_soc_register_card failed\n");
 159                goto err_put_cpu_of_node;
 160        }
 161
 162        return 0;
 163
 164err_put_cpu_of_node:
 165        of_node_put(tegra_sgtl5000_dai.cpus->of_node);
 166        tegra_sgtl5000_dai.cpus->of_node = NULL;
 167        tegra_sgtl5000_dai.platforms->of_node = NULL;
 168err_put_codec_of_node:
 169        of_node_put(tegra_sgtl5000_dai.codecs->of_node);
 170        tegra_sgtl5000_dai.codecs->of_node = NULL;
 171err:
 172        return ret;
 173}
 174
 175static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
 176{
 177        struct snd_soc_card *card = platform_get_drvdata(pdev);
 178        int ret;
 179
 180        ret = snd_soc_unregister_card(card);
 181
 182        of_node_put(tegra_sgtl5000_dai.cpus->of_node);
 183        tegra_sgtl5000_dai.cpus->of_node = NULL;
 184        tegra_sgtl5000_dai.platforms->of_node = NULL;
 185        of_node_put(tegra_sgtl5000_dai.codecs->of_node);
 186        tegra_sgtl5000_dai.codecs->of_node = NULL;
 187
 188        return ret;
 189}
 190
 191static const struct of_device_id tegra_sgtl5000_of_match[] = {
 192        { .compatible = "nvidia,tegra-audio-sgtl5000", },
 193        { /* sentinel */ },
 194};
 195
 196static struct platform_driver tegra_sgtl5000_driver = {
 197        .driver = {
 198                .name = DRV_NAME,
 199                .pm = &snd_soc_pm_ops,
 200                .of_match_table = tegra_sgtl5000_of_match,
 201        },
 202        .probe = tegra_sgtl5000_driver_probe,
 203        .remove = tegra_sgtl5000_driver_remove,
 204};
 205module_platform_driver(tegra_sgtl5000_driver);
 206
 207MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
 208MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
 209MODULE_LICENSE("GPL v2");
 210MODULE_ALIAS("platform:" DRV_NAME);
 211MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);
 212