sound/soc/mxs/mxs-sgtl5000.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright 2011 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include <linux/module.h>
   7 #include <linux/device.h>
   8 #include <linux/of.h>
   9 #include <linux/of_device.h>
  10 #include <sound/core.h>
  11 #include <sound/pcm.h>
  12 #include <sound/soc.h>
  13 #include <sound/jack.h>
  14 #include <sound/soc-dapm.h>
  15
  16 #include "../codecs/sgtl5000.h"
  17 #include "mxs-saif.h"
  18
  19 static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
  20         struct snd_pcm_hw_params *params)
  21 {
  22         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  23         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  24         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  25         unsigned int rate = params_rate(params);
  26         u32 mclk;
  27         int ret;
  28
  29         /* sgtl5000 does not support 512*rate when in 96000 fs */
  30         switch (rate) {
  31         case 96000:
  32                 mclk = 256 * rate;
  33                 break;
  34         default:
  35                 mclk = 512 * rate;
  36                 break;
  37         }
  38
  39         /* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
  40         ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
  41         if (ret) {
  42                 dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
  43                         mclk / 1000000, mclk / 1000 % 1000);
  44                 return ret;
  45         }
  46
  47         /* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
  48         ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
  49         if (ret) {
  50                 dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
  51                         mclk / 1000000, mclk / 1000 % 1000);
  52                 return ret;
  53         }
  54
  55         return 0;
  56 }
  57
  58 static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
  59         .hw_params = mxs_sgtl5000_hw_params,
  60 };
  61
  62 #define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
  63         SND_SOC_DAIFMT_CBS_CFS)
  64
  65
  66 SND_SOC_DAILINK_DEFS(hifi_tx,
  67         DAILINK_COMP_ARRAY(COMP_EMPTY()),
  68         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
  69         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  70
  71 SND_SOC_DAILINK_DEFS(hifi_rx,
  72         DAILINK_COMP_ARRAY(COMP_EMPTY()),
  73         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
  74         DAILINK_COMP_ARRAY(COMP_EMPTY()));
  75
  76 static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
  77         {
  78                 .name           = "HiFi Tx",
  79                 .stream_name    = "HiFi Playback",
  80                 .dai_fmt        = MXS_SGTL5000_DAI_FMT,
  81                 .ops            = &mxs_sgtl5000_hifi_ops,
  82                 .playback_only  = true,
  83                 SND_SOC_DAILINK_REG(hifi_tx),
  84         }, {
  85                 .name           = "HiFi Rx",
  86                 .stream_name    = "HiFi Capture",
  87                 .dai_fmt        = MXS_SGTL5000_DAI_FMT,
  88                 .ops            = &mxs_sgtl5000_hifi_ops,
  89                 .capture_only   = true,
  90                 SND_SOC_DAILINK_REG(hifi_rx),
  91         },
  92 };
  93
  94 static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = {
  95         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  96         SND_SOC_DAPM_LINE("Line In Jack", NULL),
  97         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  98         SND_SOC_DAPM_SPK("Line Out Jack", NULL),
  99         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 100 };
 101
 102 static struct snd_soc_card mxs_sgtl5000 = {
 103         .name           = "mxs_sgtl5000",
 104         .owner          = THIS_MODULE,
 105         .dai_link       = mxs_sgtl5000_dai,
 106         .num_links      = ARRAY_SIZE(mxs_sgtl5000_dai),
 107 };
 108
 109 static int mxs_sgtl5000_probe(struct platform_device *pdev)
 110 {
 111         struct snd_soc_card *card = &mxs_sgtl5000;
 112         int ret, i;
 113         struct device_node *np = pdev->dev.of_node;
 114         struct device_node *saif_np[2], *codec_np;
 115
 116         saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
 117         saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
 118         codec_np = of_parse_phandle(np, "audio-codec", 0);
 119         if (!saif_np[0] || !saif_np[1] || !codec_np) {
 120                 dev_err(&pdev->dev, "phandle missing or invalid\n");
 121                 return -EINVAL;
 122         }
 123
 124         for (i = 0; i < 2; i++) {
 125                 mxs_sgtl5000_dai[i].codecs->name = NULL;
 126                 mxs_sgtl5000_dai[i].codecs->of_node = codec_np;
 127                 mxs_sgtl5000_dai[i].cpus->dai_name = NULL;
 128                 mxs_sgtl5000_dai[i].cpus->of_node = saif_np[i];
 129                 mxs_sgtl5000_dai[i].platforms->name = NULL;
 130                 mxs_sgtl5000_dai[i].platforms->of_node = saif_np[i];
 131         }
 132
 133         of_node_put(codec_np);
 134         of_node_put(saif_np[0]);
 135         of_node_put(saif_np[1]);
 136
 137         /*
 138          * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
 139          * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
 140          * should be >= 8MHz and <= 27M.
 141          */
 142         ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
 143         if (ret) {
 144                 dev_err(&pdev->dev, "failed to get mclk\n");
 145                 return ret;
 146         }
 147
 148         card->dev = &pdev->dev;
 149
 150         if (of_find_property(np, "audio-routing", NULL)) {
 151                 card->dapm_widgets = mxs_sgtl5000_dapm_widgets;
 152                 card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets);
 153
 154                 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
 155                 if (ret) {
 156                         dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n",
 157                                 ret);
 158                         return ret;
 159                 }
 160         }
 161
 162         ret = devm_snd_soc_register_card(&pdev->dev, card);
 163         if (ret) {
 164                 if (ret != -EPROBE_DEFER)
 165                         dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 166                                 ret);
 167                 return ret;
 168         }
 169
 170         return 0;
 171 }
 172
 173 static int mxs_sgtl5000_remove(struct platform_device *pdev)
 174 {
 175         mxs_saif_put_mclk(0);
 176
 177         return 0;
 178 }
 179
 180 static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
 181         { .compatible = "fsl,mxs-audio-sgtl5000", },
 182         { /* sentinel */ }
 183 };
 184 MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);
 185
 186 static struct platform_driver mxs_sgtl5000_audio_driver = {
 187         .driver = {
 188                 .name = "mxs-sgtl5000",
 189                 .of_match_table = mxs_sgtl5000_dt_ids,
 190         },
 191         .probe = mxs_sgtl5000_probe,
 192         .remove = mxs_sgtl5000_remove,
 193 };
 194
 195 module_platform_driver(mxs_sgtl5000_audio_driver);
 196
 197 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
 198 MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
 199 MODULE_LICENSE("GPL");
 200 MODULE_ALIAS("platform:mxs-sgtl5000");