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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         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 = snd_soc_register_card(&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 int brownstone_remove(struct platform_device *pdev)
127 {
128         snd_soc_unregister_card(&brownstone);
129         return 0;
130 }
131 
132 static struct platform_driver mmp_driver = {
133         .driver         = {
134                 .name   = "brownstone-audio",
135                 .pm     = &snd_soc_pm_ops,
136         },
137         .probe          = brownstone_probe,
138         .remove         = brownstone_remove,
139 };
140 
141 module_platform_driver(mmp_driver);
142 
143 MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
144 MODULE_DESCRIPTION("ALSA SoC Brownstone");
145 MODULE_LICENSE("GPL");
146 

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