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_init(struct snd_soc_pcm_runtime *rtd)
  49 {
  50         struct snd_soc_codec *codec = rtd->codec;
  51         struct snd_soc_dapm_context *dapm = &codec->dapm;
  52
  53         /* set endpoints to not connected */
  54         snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
  55         snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
  56         snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
  57         snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
  58         snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
  59         snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
  60         snd_soc_dapm_nc_pin(dapm, "IN1LN");
  61         snd_soc_dapm_nc_pin(dapm, "IN1LP");
  62         snd_soc_dapm_nc_pin(dapm, "IN1RP");
  63         snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
  64         snd_soc_dapm_nc_pin(dapm, "IN2RN");
  65         snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
  66         snd_soc_dapm_nc_pin(dapm, "IN2LN");
  67
  68         return 0;
  69 }
  70
  71 static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
  72                                        struct snd_pcm_hw_params *params)
  73 {
  74         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  75         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  76         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  77         int freq_out, sspa_mclk, sysclk;
  78         int sspa_div;
  79
  80         if (params_rate(params) > 11025) {
  81                 freq_out  = params_rate(params) * 512;
  82                 sysclk    = params_rate(params) * 256;
  83                 sspa_mclk = params_rate(params) * 64;
  84         } else {
  85                 freq_out  = params_rate(params) * 1024;
  86                 sysclk    = params_rate(params) * 512;
  87                 sspa_mclk = params_rate(params) * 64;
  88         }
  89         sspa_div = freq_out;
  90         do_div(sspa_div, sspa_mclk);
  91
  92         snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
  93         snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
  94         snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
  95
  96         /* set wm8994 sysclk */
  97         snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
  98
  99         return 0;
 100 }
 101
 102 /* machine stream operations */
 103 static struct snd_soc_ops brownstone_ops = {
 104         .hw_params = brownstone_wm8994_hw_params,
 105 };
 106
 107 static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
 108 {
 109         .name           = "WM8994",
 110         .stream_name    = "WM8994 HiFi",
 111         .cpu_dai_name   = "mmp-sspa-dai.0",
 112         .codec_dai_name = "wm8994-aif1",
 113         .platform_name  = "mmp-pcm-audio",
 114         .codec_name     = "wm8994-codec",
 115         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 116                                 SND_SOC_DAIFMT_CBS_CFS,
 117         .ops            = &brownstone_ops,
 118         .init           = brownstone_wm8994_init,
 119 },
 120 };
 121
 122 /* audio machine driver */
 123 static struct snd_soc_card brownstone = {
 124         .name         = "brownstone",
 125         .owner        = THIS_MODULE,
 126         .dai_link     = brownstone_wm8994_dai,
 127         .num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
 128
 129         .controls = brownstone_dapm_control,
 130         .num_controls = ARRAY_SIZE(brownstone_dapm_control),
 131         .dapm_widgets = brownstone_dapm_widgets,
 132         .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
 133         .dapm_routes = brownstone_audio_map,
 134         .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
 135 };
 136
 137 static int brownstone_probe(struct platform_device *pdev)
 138 {
 139         int ret;
 140
 141         brownstone.dev = &pdev->dev;
 142         ret = snd_soc_register_card(&brownstone);
 143         if (ret)
 144                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 145                                 ret);
 146         return ret;
 147 }
 148
 149 static int brownstone_remove(struct platform_device *pdev)
 150 {
 151         snd_soc_unregister_card(&brownstone);
 152         return 0;
 153 }
 154
 155 static struct platform_driver mmp_driver = {
 156         .driver         = {
 157                 .name   = "brownstone-audio",
 158                 .pm     = &snd_soc_pm_ops,
 159         },
 160         .probe          = brownstone_probe,
 161         .remove         = brownstone_remove,
 162 };
 163
 164 module_platform_driver(mmp_driver);
 165
 166 MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
 167 MODULE_DESCRIPTION("ALSA SoC Brownstone");
 168 MODULE_LICENSE("GPL");