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Linux/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 
 56         if (params_rate(params) > 11025) {
 57                 freq_out  = params_rate(params) * 512;
 58                 sysclk    = params_rate(params) * 256;
 59                 sspa_mclk = params_rate(params) * 64;
 60         } else {
 61                 freq_out  = params_rate(params) * 1024;
 62                 sysclk    = params_rate(params) * 512;
 63                 sspa_mclk = params_rate(params) * 64;
 64         }
 65 
 66         snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
 67         snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
 68         snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
 69 
 70         /* set wm8994 sysclk */
 71         snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
 72 
 73         return 0;
 74 }
 75 
 76 /* machine stream operations */
 77 static struct snd_soc_ops brownstone_ops = {
 78         .hw_params = brownstone_wm8994_hw_params,
 79 };
 80 
 81 static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
 82 {
 83         .name           = "WM8994",
 84         .stream_name    = "WM8994 HiFi",
 85         .cpu_dai_name   = "mmp-sspa-dai.0",
 86         .codec_dai_name = "wm8994-aif1",
 87         .platform_name  = "mmp-pcm-audio",
 88         .codec_name     = "wm8994-codec",
 89         .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 90                                 SND_SOC_DAIFMT_CBS_CFS,
 91         .ops            = &brownstone_ops,
 92 },
 93 };
 94 
 95 /* audio machine driver */
 96 static struct snd_soc_card brownstone = {
 97         .name         = "brownstone",
 98         .owner        = THIS_MODULE,
 99         .dai_link     = brownstone_wm8994_dai,
100         .num_links    = ARRAY_SIZE(brownstone_wm8994_dai),
101 
102         .controls = brownstone_dapm_control,
103         .num_controls = ARRAY_SIZE(brownstone_dapm_control),
104         .dapm_widgets = brownstone_dapm_widgets,
105         .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
106         .dapm_routes = brownstone_audio_map,
107         .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
108         .fully_routed = true,
109 };
110 
111 static int brownstone_probe(struct platform_device *pdev)
112 {
113         int ret;
114 
115         brownstone.dev = &pdev->dev;
116         ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
117         if (ret)
118                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
119                                 ret);
120         return ret;
121 }
122 
123 static struct platform_driver mmp_driver = {
124         .driver         = {
125                 .name   = "brownstone-audio",
126                 .pm     = &snd_soc_pm_ops,
127         },
128         .probe          = brownstone_probe,
129 };
130 
131 module_platform_driver(mmp_driver);
132 
133 MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
134 MODULE_DESCRIPTION("ALSA SoC Brownstone");
135 MODULE_LICENSE("GPL");
136 

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