kernel/sound/soc/pxa/brownstone.c

   1 /*
   2  * linux/sound/soc/pxa/brownstone.c
   3  *
   4  * Copyright (C) 2011 Marvell International Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  */
  12
  13 #include <linux/module.h>
  14 #include <sound/core.h>
  15 #include <sound/pcm.h>
  16 #include <sound/soc.h>
  17 #include <sound/jack.h>
  18
  19 #include "../codecs/wm8994.h"
  20 #include "mmp-sspa.h"
  21
  22 static const struct snd_kcontrol_new brownstone_dapm_control[] = {
  23         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  24 };
  25
  26 static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
  27         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  28         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  29         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  30         SND_SOC_DAPM_MIC("Main Mic", NULL),
  31 };
  32
  33 static const struct snd_soc_dapm_route brownstone_audio_map[] = {
  34         {"Ext Spk", NULL, "SPKOUTLP"},
  35         {"Ext Spk", NULL, "SPKOUTLN"},
  36         {"Ext Spk", NULL, "SPKOUTRP"},
  37         {"Ext Spk", NULL, "SPKOUTRN"},
  38
  39         {"Headset Stereophone", NULL, "HPOUT1L"},
  40         {"Headset Stereophone", NULL, "HPOUT1R"},
  41
  42         {"IN1RN", NULL, "Headset Mic"},
  43
  44         {"DMIC1DAT", NULL, "MICBIAS1"},
  45         {"MICBIAS1", NULL, "Main Mic"},
  46 };
  47
  48 static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
  49                                        struct snd_pcm_hw_params *params)
  50 {
  51         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  52         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  53         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  54         int freq_out, sspa_mclk, sysclk;
  55         int sspa_div;
  56
  57         if (params_rate(params) > 11025) {
  58                 freq_out  = params_rate(params) * 512;
  59                 sysclk    = params_rate(params) * 256;
  60                 sspa_mclk = params_rate(params) * 64;
  61         } else {
  62                 freq_out  = params_rate(params) * 1024;
  63                 sysclk    = params_rate(params) * 512;
  64                 sspa_mclk = params_rate(params) * 64;
  65         }
  66         sspa_div = freq_out;
  67         do_div(sspa_div, sspa_mclk);
  68
  69         snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
  70         snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
  71         snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
  72
  73         /* set wm8994 sysclk */
  74         snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
  75
  76         return 0;
  77 }
  78
  79 /* machine stream operations */
  80 static struct snd_soc_ops brownstone_ops = {
  81         .hw_params = brownstone_wm8994_hw_params,
  82 };
  83
  84 static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
  85 {
  86         .name           = "WM8994",
  87         .stream_name    = "WM8994 HiFi",
  88         .cpu_dai_name   = "mmp-sspa-dai.0",
  89         .codec_dai_name = "wm8994-aif1",
  90         .platform_name  = "mmp-pcm-audio",
  91         .codec_name     = "wm8994-codec",
  92         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  93                                 SND_SOC_DAIFMT_CBS_CFS,
  94         .ops            = &brownstone_ops,
  95 },
  96 };
  97
  98 /* audio machine driver */
  99 static struct snd_soc_card brownstone = {
 100         .name         = "brownstone",
 101         .owner        = THIS_MODULE,
 102         .dai_link     = brownstone_wm8994_dai,
 103         .num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
 104
 105         .controls = brownstone_dapm_control,
 106         .num_controls = ARRAY_SIZE(brownstone_dapm_control),
 107         .dapm_widgets = brownstone_dapm_widgets,
 108         .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
 109         .dapm_routes = brownstone_audio_map,
 110         .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
 111         .fully_routed = true,
 112 };
 113
 114 static int brownstone_probe(struct platform_device *pdev)
 115 {
 116         int ret;
 117
 118         brownstone.dev = &pdev->dev;
 119         ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
 120         if (ret)
 121                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 122                                 ret);
 123         return ret;
 124 }
 125
 126 static struct platform_driver mmp_driver = {
 127         .driver         = {
 128                 .name   = "brownstone-audio",
 129                 .pm     = &snd_soc_pm_ops,
 130         },
 131         .probe          = brownstone_probe,
 132 };
 133
 134 module_platform_driver(mmp_driver);
 135
 136 MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
 137 MODULE_DESCRIPTION("ALSA SoC Brownstone");
 138 MODULE_LICENSE("GPL");