sound/soc/cirrus/snappercl15.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
   4  *
   5  * Copyright (C) 2008 Bluewater Systems Ltd
   6  * Author: Ryan Mallon
   7  */
   8
   9 #include <linux/platform_device.h>
  10 #include <linux/module.h>
  11 #include <linux/soc/cirrus/ep93xx.h>
  12 #include <sound/core.h>
  13 #include <sound/pcm.h>
  14 #include <sound/soc.h>
  15
  16 #include <asm/mach-types.h>
  17
  18 #include "../codecs/tlv320aic23.h"
  19
  20 #define CODEC_CLOCK 5644800
  21
  22 static int snappercl15_hw_params(struct snd_pcm_substream *substream,
  23                                  struct snd_pcm_hw_params *params)
  24 {
  25         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  26         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  27         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  28         int err;
  29
  30         err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
  31                                      SND_SOC_CLOCK_IN);
  32         if (err)
  33                 return err;
  34
  35         err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
  36                                      SND_SOC_CLOCK_OUT);
  37         if (err)
  38                 return err;
  39
  40         return 0;
  41 }
  42
  43 static const struct snd_soc_ops snappercl15_ops = {
  44         .hw_params      = snappercl15_hw_params,
  45 };
  46
  47 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  48         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  49         SND_SOC_DAPM_LINE("Line In", NULL),
  50         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  51 };
  52
  53 static const struct snd_soc_dapm_route audio_map[] = {
  54         {"Headphone Jack", NULL, "LHPOUT"},
  55         {"Headphone Jack", NULL, "RHPOUT"},
  56
  57         {"LLINEIN", NULL, "Line In"},
  58         {"RLINEIN", NULL, "Line In"},
  59
  60         {"MICIN", NULL, "Mic Jack"},
  61 };
  62
  63 static struct snd_soc_dai_link snappercl15_dai = {
  64         .name           = "tlv320aic23",
  65         .stream_name    = "AIC23",
  66         .cpu_dai_name   = "ep93xx-i2s",
  67         .codec_dai_name = "tlv320aic23-hifi",
  68         .codec_name     = "tlv320aic23-codec.0-001a",
  69         .platform_name  = "ep93xx-i2s",
  70         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  71                           SND_SOC_DAIFMT_CBS_CFS,
  72         .ops            = &snappercl15_ops,
  73 };
  74
  75 static struct snd_soc_card snd_soc_snappercl15 = {
  76         .name           = "Snapper CL15",
  77         .owner          = THIS_MODULE,
  78         .dai_link       = &snappercl15_dai,
  79         .num_links      = 1,
  80
  81         .dapm_widgets           = tlv320aic23_dapm_widgets,
  82         .num_dapm_widgets       = ARRAY_SIZE(tlv320aic23_dapm_widgets),
  83         .dapm_routes            = audio_map,
  84         .num_dapm_routes        = ARRAY_SIZE(audio_map),
  85 };
  86
  87 static int snappercl15_probe(struct platform_device *pdev)
  88 {
  89         struct snd_soc_card *card = &snd_soc_snappercl15;
  90         int ret;
  91
  92         ret = ep93xx_i2s_acquire();
  93         if (ret)
  94                 return ret;
  95
  96         card->dev = &pdev->dev;
  97
  98         ret = snd_soc_register_card(card);
  99         if (ret) {
 100                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 101                         ret);
 102                 ep93xx_i2s_release();
 103         }
 104
 105         return ret;
 106 }
 107
 108 static int snappercl15_remove(struct platform_device *pdev)
 109 {
 110         struct snd_soc_card *card = platform_get_drvdata(pdev);
 111
 112         snd_soc_unregister_card(card);
 113         ep93xx_i2s_release();
 114
 115         return 0;
 116 }
 117
 118 static struct platform_driver snappercl15_driver = {
 119         .driver         = {
 120                 .name   = "snappercl15-audio",
 121         },
 122         .probe          = snappercl15_probe,
 123         .remove         = snappercl15_remove,
 124 };
 125
 126 module_platform_driver(snappercl15_driver);
 127
 128 MODULE_AUTHOR("Ryan Mallon");
 129 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
 130 MODULE_LICENSE("GPL");
 131 MODULE_ALIAS("platform:snappercl15-audio");