sound/soc/tegra/tegra_sgtl5000.c

   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
  31 struct tegra_sgtl5000 {
  32         struct tegra_asoc_utils_data util_data;
  33 };
  34
  35 static 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
  74 static const struct snd_soc_ops tegra_sgtl5000_ops = {
  75         .hw_params = tegra_sgtl5000_hw_params,
  76 };
  77
  78 static 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
  84 SND_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
  89 static 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
  98 static 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
 108 static 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
 164 err_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;
 168 err_put_codec_of_node:
 169         of_node_put(tegra_sgtl5000_dai.codecs->of_node);
 170         tegra_sgtl5000_dai.codecs->of_node = NULL;
 171 err:
 172         return ret;
 173 }
 174
 175 static 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
 191 static const struct of_device_id tegra_sgtl5000_of_match[] = {
 192         { .compatible = "nvidia,tegra-audio-sgtl5000", },
 193         { /* sentinel */ },
 194 };
 195
 196 static 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 };
 205 module_platform_driver(tegra_sgtl5000_driver);
 206
 207 MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
 208 MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
 209 MODULE_LICENSE("GPL v2");
 210 MODULE_ALIAS("platform:" DRV_NAME);
 211 MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);