sound/soc/blackfin/bfin-eval-adau1373.c

   1 /*
   2  * Machine driver for EVAL-ADAU1373 on Analog Devices bfin
   3  * evaluation boards.
   4  *
   5  * Copyright 2011 Analog Devices Inc.
   6  * Author: Lars-Peter Clausen <lars@metafoo.de>
   7  *
   8  * Licensed under the GPL-2 or later.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/device.h>
  13 #include <sound/core.h>
  14 #include <sound/pcm.h>
  15 #include <sound/soc.h>
  16 #include <sound/pcm_params.h>
  17
  18 #include "../codecs/adau1373.h"
  19
  20 static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = {
  21         SND_SOC_DAPM_LINE("Line In1", NULL),
  22         SND_SOC_DAPM_LINE("Line In2", NULL),
  23         SND_SOC_DAPM_LINE("Line In3", NULL),
  24         SND_SOC_DAPM_LINE("Line In4", NULL),
  25
  26         SND_SOC_DAPM_LINE("Line Out1", NULL),
  27         SND_SOC_DAPM_LINE("Line Out2", NULL),
  28         SND_SOC_DAPM_LINE("Stereo Out", NULL),
  29         SND_SOC_DAPM_HP("Headphone", NULL),
  30         SND_SOC_DAPM_HP("Earpiece", NULL),
  31         SND_SOC_DAPM_SPK("Speaker", NULL),
  32 };
  33
  34 static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = {
  35         { "AIN1L", NULL, "Line In1" },
  36         { "AIN1R", NULL, "Line In1" },
  37         { "AIN2L", NULL, "Line In2" },
  38         { "AIN2R", NULL, "Line In2" },
  39         { "AIN3L", NULL, "Line In3" },
  40         { "AIN3R", NULL, "Line In3" },
  41         { "AIN4L", NULL, "Line In4" },
  42         { "AIN4R", NULL, "Line In4" },
  43
  44         /* MICBIAS can be connected via a jumper to the line-in jack, since w
  45            don't know which one is going to be used, just power both. */
  46         { "Line In1", NULL, "MICBIAS1" },
  47         { "Line In2", NULL, "MICBIAS1" },
  48         { "Line In3", NULL, "MICBIAS1" },
  49         { "Line In4", NULL, "MICBIAS1" },
  50         { "Line In1", NULL, "MICBIAS2" },
  51         { "Line In2", NULL, "MICBIAS2" },
  52         { "Line In3", NULL, "MICBIAS2" },
  53         { "Line In4", NULL, "MICBIAS2" },
  54
  55         { "Line Out1", NULL, "LOUT1L" },
  56         { "Line Out1", NULL, "LOUT1R" },
  57         { "Line Out2", NULL, "LOUT2L" },
  58         { "Line Out2", NULL, "LOUT2R" },
  59         { "Headphone", NULL, "HPL" },
  60         { "Headphone", NULL, "HPR" },
  61         { "Earpiece", NULL, "EP" },
  62         { "Speaker", NULL, "SPKL" },
  63         { "Stereo Out", NULL, "SPKR" },
  64 };
  65
  66 static int bfin_eval_adau1373_hw_params(struct snd_pcm_substream *substream,
  67         struct snd_pcm_hw_params *params)
  68 {
  69         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  70         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  71         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  72         int ret;
  73         int pll_rate;
  74
  75         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  76                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  77         if (ret)
  78                 return ret;
  79
  80         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  81                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  82         if (ret)
  83                 return ret;
  84
  85         switch (params_rate(params)) {
  86         case 48000:
  87         case 8000:
  88         case 12000:
  89         case 16000:
  90         case 24000:
  91         case 32000:
  92                 pll_rate = 48000 * 1024;
  93                 break;
  94         case 44100:
  95         case 7350:
  96         case 11025:
  97         case 14700:
  98         case 22050:
  99         case 29400:
 100                 pll_rate = 44100 * 1024;
 101                 break;
 102         default:
 103                 return -EINVAL;
 104         }
 105
 106         ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
 107                         ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
 108         if (ret)
 109                 return ret;
 110
 111         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
 112                         SND_SOC_CLOCK_IN);
 113
 114         return ret;
 115 }
 116
 117 static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
 118 {
 119         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 120         unsigned int pll_rate = 48000 * 1024;
 121         int ret;
 122
 123         ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
 124                         ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
 125         if (ret)
 126                 return ret;
 127
 128         ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
 129                         SND_SOC_CLOCK_IN);
 130
 131         return ret;
 132 }
 133 static struct snd_soc_ops bfin_eval_adau1373_ops = {
 134         .hw_params = bfin_eval_adau1373_hw_params,
 135 };
 136
 137 static struct snd_soc_dai_link bfin_eval_adau1373_dai = {
 138         .name = "adau1373",
 139         .stream_name = "adau1373",
 140         .cpu_dai_name = "bfin-i2s.0",
 141         .codec_dai_name = "adau1373-aif1",
 142         .platform_name = "bfin-i2s-pcm-audio",
 143         .codec_name = "adau1373.0-001a",
 144         .ops = &bfin_eval_adau1373_ops,
 145         .init = bfin_eval_adau1373_codec_init,
 146 };
 147
 148 static struct snd_soc_card bfin_eval_adau1373 = {
 149         .name = "bfin-eval-adau1373",
 150         .dai_link = &bfin_eval_adau1373_dai,
 151         .num_links = 1,
 152
 153         .dapm_widgets           = bfin_eval_adau1373_dapm_widgets,
 154         .num_dapm_widgets       = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets),
 155         .dapm_routes            = bfin_eval_adau1373_dapm_routes,
 156         .num_dapm_routes        = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes),
 157 };
 158
 159 static int bfin_eval_adau1373_probe(struct platform_device *pdev)
 160 {
 161         struct snd_soc_card *card = &bfin_eval_adau1373;
 162
 163         card->dev = &pdev->dev;
 164
 165         return snd_soc_register_card(&bfin_eval_adau1373);
 166 }
 167
 168 static int __devexit bfin_eval_adau1373_remove(struct platform_device *pdev)
 169 {
 170         struct snd_soc_card *card = platform_get_drvdata(pdev);
 171
 172         snd_soc_unregister_card(card);
 173
 174         return 0;
 175 }
 176
 177 static struct platform_driver bfin_eval_adau1373_driver = {
 178         .driver = {
 179                 .name = "bfin-eval-adau1373",
 180                 .owner = THIS_MODULE,
 181                 .pm = &snd_soc_pm_ops,
 182         },
 183         .probe = bfin_eval_adau1373_probe,
 184         .remove = __devexit_p(bfin_eval_adau1373_remove),
 185 };
 186
 187 static int __init bfin_eval_adau1373_init(void)
 188 {
 189         return platform_driver_register(&bfin_eval_adau1373_driver);
 190 }
 191 module_init(bfin_eval_adau1373_init);
 192
 193 static void __exit bfin_eval_adau1373_exit(void)
 194 {
 195         platform_driver_unregister(&bfin_eval_adau1373_driver);
 196 }
 197 module_exit(bfin_eval_adau1373_exit);
 198
 199 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 200 MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver");
 201 MODULE_LICENSE("GPL");
 202 MODULE_ALIAS("platform:bfin-eval-adau1373");