sound/soc/tegra/tegra_wm8753.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * tegra_wm8753.c - Tegra machine ASoC driver for boards using WM8753 codec.
   4  *
   5  * Author: Stephen Warren <swarren@nvidia.com>
   6  * Copyright (C) 2010-2012 - NVIDIA, Inc.
   7  *
   8  * Based on code copyright/by:
   9  *
  10  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  11  *
  12  * Copyright 2007 Wolfson Microelectronics PLC.
  13  * Author: Graeme Gregory
  14  *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/slab.h>
  20 #include <linux/gpio.h>
  21 #include <linux/of_gpio.h>
  22
  23 #include <sound/core.h>
  24 #include <sound/jack.h>
  25 #include <sound/pcm.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/soc.h>
  28
  29 #include "../codecs/wm8753.h"
  30
  31 #include "tegra_asoc_utils.h"
  32
  33 #define DRV_NAME "tegra-snd-wm8753"
  34
  35 struct tegra_wm8753 {
  36         struct tegra_asoc_utils_data util_data;
  37 };
  38
  39 static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream,
  40                                         struct snd_pcm_hw_params *params)
  41 {
  42         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  43         struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  44         struct snd_soc_card *card = rtd->card;
  45         struct tegra_wm8753 *machine = snd_soc_card_get_drvdata(card);
  46         int srate, mclk;
  47         int err;
  48
  49         srate = params_rate(params);
  50         switch (srate) {
  51         case 11025:
  52         case 22050:
  53         case 44100:
  54         case 88200:
  55                 mclk = 11289600;
  56                 break;
  57         default:
  58                 mclk = 12288000;
  59                 break;
  60         }
  61
  62         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
  63         if (err < 0) {
  64                 dev_err(card->dev, "Can't configure clocks\n");
  65                 return err;
  66         }
  67
  68         err = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, mclk,
  69                                         SND_SOC_CLOCK_IN);
  70         if (err < 0) {
  71                 dev_err(card->dev, "codec_dai clock not set\n");
  72                 return err;
  73         }
  74
  75         return 0;
  76 }
  77
  78 static const struct snd_soc_ops tegra_wm8753_ops = {
  79         .hw_params = tegra_wm8753_hw_params,
  80 };
  81
  82 static const struct snd_soc_dapm_widget tegra_wm8753_dapm_widgets[] = {
  83         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  84         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  85 };
  86
  87 SND_SOC_DAILINK_DEFS(pcm,
  88         DAILINK_COMP_ARRAY(COMP_EMPTY()),
  89         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8753-hifi")),
  90         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  91
  92 static struct snd_soc_dai_link tegra_wm8753_dai = {
  93         .name = "WM8753",
  94         .stream_name = "WM8753 PCM",
  95         .ops = &tegra_wm8753_ops,
  96         .dai_fmt = SND_SOC_DAIFMT_I2S |
  97                         SND_SOC_DAIFMT_NB_NF |
  98                         SND_SOC_DAIFMT_CBS_CFS,
  99         SND_SOC_DAILINK_REG(pcm),
 100 };
 101
 102 static struct snd_soc_card snd_soc_tegra_wm8753 = {
 103         .name = "tegra-wm8753",
 104         .owner = THIS_MODULE,
 105         .dai_link = &tegra_wm8753_dai,
 106         .num_links = 1,
 107
 108         .dapm_widgets = tegra_wm8753_dapm_widgets,
 109         .num_dapm_widgets = ARRAY_SIZE(tegra_wm8753_dapm_widgets),
 110         .fully_routed = true,
 111 };
 112
 113 static int tegra_wm8753_driver_probe(struct platform_device *pdev)
 114 {
 115         struct device_node *np = pdev->dev.of_node;
 116         struct snd_soc_card *card = &snd_soc_tegra_wm8753;
 117         struct tegra_wm8753 *machine;
 118         int ret;
 119
 120         machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8753),
 121                                GFP_KERNEL);
 122         if (!machine)
 123                 return -ENOMEM;
 124
 125         card->dev = &pdev->dev;
 126         snd_soc_card_set_drvdata(card, machine);
 127
 128         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 129         if (ret)
 130                 return ret;
 131
 132         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 133         if (ret)
 134                 return ret;
 135
 136         tegra_wm8753_dai.codecs->of_node = of_parse_phandle(np,
 137                         "nvidia,audio-codec", 0);
 138         if (!tegra_wm8753_dai.codecs->of_node) {
 139                 dev_err(&pdev->dev,
 140                         "Property 'nvidia,audio-codec' missing or invalid\n");
 141                 return -EINVAL;
 142         }
 143
 144         tegra_wm8753_dai.cpus->of_node = of_parse_phandle(np,
 145                         "nvidia,i2s-controller", 0);
 146         if (!tegra_wm8753_dai.cpus->of_node) {
 147                 dev_err(&pdev->dev,
 148                         "Property 'nvidia,i2s-controller' missing or invalid\n");
 149                 return -EINVAL;
 150         }
 151
 152         tegra_wm8753_dai.platforms->of_node = tegra_wm8753_dai.cpus->of_node;
 153
 154         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 155         if (ret)
 156                 return ret;
 157
 158         ret = devm_snd_soc_register_card(&pdev->dev, card);
 159         if (ret)
 160                 return dev_err_probe(&pdev->dev, ret,
 161                                      "snd_soc_register_card failed\n");
 162
 163         return 0;
 164 }
 165
 166 static const struct of_device_id tegra_wm8753_of_match[] = {
 167         { .compatible = "nvidia,tegra-audio-wm8753", },
 168         {},
 169 };
 170
 171 static struct platform_driver tegra_wm8753_driver = {
 172         .driver = {
 173                 .name = DRV_NAME,
 174                 .pm = &snd_soc_pm_ops,
 175                 .of_match_table = tegra_wm8753_of_match,
 176         },
 177         .probe = tegra_wm8753_driver_probe,
 178 };
 179 module_platform_driver(tegra_wm8753_driver);
 180
 181 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 182 MODULE_DESCRIPTION("Tegra+WM8753 machine ASoC driver");
 183 MODULE_LICENSE("GPL");
 184 MODULE_ALIAS("platform:" DRV_NAME);
 185 MODULE_DEVICE_TABLE(of, tegra_wm8753_of_match);