SAFE public projects git trees. - safe/jmp/linux-2.6/blob - sound/soc/pxa/zylonite.c

   1 /*
   2  * zylonite.c  --  SoC audio for Zylonite
   3  *
   4  * Copyright 2008 Wolfson Microelectronics PLC.
   5  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/device.h>
  17 #include <linux/i2c.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/soc.h>
  22 #include <sound/soc-dapm.h>
  23
  24 #include "../codecs/wm9713.h"
  25 #include "pxa2xx-pcm.h"
  26 #include "pxa2xx-ac97.h"
  27 #include "pxa-ssp.h"
  28
  29 static struct snd_soc_card zylonite;
  30
  31 static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
  32         SND_SOC_DAPM_HP("Headphone", NULL),
  33         SND_SOC_DAPM_MIC("Headset Microphone", NULL),
  34         SND_SOC_DAPM_MIC("Handset Microphone", NULL),
  35         SND_SOC_DAPM_SPK("Multiactor", NULL),
  36         SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
  37 };
  38
  39 /* Currently supported audio map */
  40 static const struct snd_soc_dapm_route audio_map[] = {
  41
  42         /* Headphone output connected to HPL/HPR */
  43         { "Headphone", NULL,  "HPL" },
  44         { "Headphone", NULL,  "HPR" },
  45
  46         /* On-board earpiece */
  47         { "Headset Earpiece", NULL, "OUT3" },
  48
  49         /* Headphone mic */
  50         { "MIC2A", NULL, "Mic Bias" },
  51         { "Mic Bias", NULL, "Headset Microphone" },
  52
  53         /* On-board mic */
  54         { "MIC1", NULL, "Mic Bias" },
  55         { "Mic Bias", NULL, "Handset Microphone" },
  56
  57         /* Multiactor differentially connected over SPKL/SPKR */
  58         { "Multiactor", NULL, "SPKL" },
  59         { "Multiactor", NULL, "SPKR" },
  60 };
  61
  62 static int zylonite_wm9713_init(struct snd_soc_codec *codec)
  63 {
  64         /* Currently we only support use of the AC97 clock here.  If
  65          * CLK_POUT is selected by SW15 then the clock API will need
  66          * to be used to request and enable it here.
  67          */
  68
  69         snd_soc_dapm_new_controls(codec, zylonite_dapm_widgets,
  70                                   ARRAY_SIZE(zylonite_dapm_widgets));
  71
  72         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
  73
  74         /* Static setup for now */
  75         snd_soc_dapm_enable_pin(codec, "Headphone");
  76         snd_soc_dapm_enable_pin(codec, "Headset Earpiece");
  77
  78         snd_soc_dapm_sync(codec);
  79         return 0;
  80 }
  81
  82 static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
  83                                     struct snd_pcm_hw_params *params)
  84 {
  85         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  86         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  87         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  88         unsigned int pll_out = 0;
  89         unsigned int acds = 0;
  90         unsigned int wm9713_div = 0;
  91         int ret = 0;
  92
  93         switch (params_rate(params)) {
  94         case 8000:
  95                 wm9713_div = 12;
  96                 pll_out = 2048000;
  97                 break;
  98         case 16000:
  99                 wm9713_div = 6;
 100                 pll_out = 4096000;
 101                 break;
 102         case 48000:
 103         default:
 104                 wm9713_div = 2;
 105                 pll_out = 12288000;
 106                 acds = 1;
 107                 break;
 108         }
 109
 110         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 111                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 112         if (ret < 0)
 113                 return ret;
 114
 115         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 116                 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 117         if (ret < 0)
 118                 return ret;
 119
 120         ret = snd_soc_dai_set_tdm_slot(cpu_dai,
 121                                        params_channels(params),
 122                                        params_channels(params));
 123         if (ret < 0)
 124                 return ret;
 125
 126         ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, pll_out);
 127         if (ret < 0)
 128                 return ret;
 129
 130         ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_ACDS, acds);
 131         if (ret < 0)
 132                 return ret;
 133
 134         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
 135         if (ret < 0)
 136                 return ret;
 137
 138         /* Note that if the PLL is in use the WM9713_PCMCLK_PLL_DIV needs
 139          * to be set instead.
 140          */
 141         ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
 142                                      WM9713_PCMDIV(wm9713_div));
 143         if (ret < 0)
 144                 return ret;
 145
 146         return 0;
 147 }
 148
 149 static struct snd_soc_ops zylonite_voice_ops = {
 150         .hw_params = zylonite_voice_hw_params,
 151 };
 152
 153 static struct snd_soc_dai_link zylonite_dai[] = {
 154 {
 155         .name = "AC97",
 156         .stream_name = "AC97 HiFi",
 157         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
 158         .codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
 159         .init = zylonite_wm9713_init,
 160 },
 161 {
 162         .name = "AC97 Aux",
 163         .stream_name = "AC97 Aux",
 164         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
 165         .codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],
 166 },
 167 {
 168         .name = "WM9713 Voice",
 169         .stream_name = "WM9713 Voice",
 170         .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3],
 171         .codec_dai = &wm9713_dai[WM9713_DAI_PCM_VOICE],
 172         .ops = &zylonite_voice_ops,
 173 },
 174 };
 175
 176 static struct snd_soc_card zylonite = {
 177         .name = "Zylonite",
 178         .platform = &pxa2xx_soc_platform,
 179         .dai_link = zylonite_dai,
 180         .num_links = ARRAY_SIZE(zylonite_dai),
 181 };
 182
 183 static struct snd_soc_device zylonite_snd_ac97_devdata = {
 184         .card = &zylonite,
 185         .codec_dev = &soc_codec_dev_wm9713,
 186 };
 187
 188 static struct platform_device *zylonite_snd_ac97_device;
 189
 190 static int __init zylonite_init(void)
 191 {
 192         int ret;
 193
 194         zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
 195         if (!zylonite_snd_ac97_device)
 196                 return -ENOMEM;
 197
 198         platform_set_drvdata(zylonite_snd_ac97_device,
 199                              &zylonite_snd_ac97_devdata);
 200         zylonite_snd_ac97_devdata.dev = &zylonite_snd_ac97_device->dev;
 201
 202         ret = platform_device_add(zylonite_snd_ac97_device);
 203         if (ret != 0)
 204                 platform_device_put(zylonite_snd_ac97_device);
 205
 206         return ret;
 207 }
 208
 209 static void __exit zylonite_exit(void)
 210 {
 211         platform_device_unregister(zylonite_snd_ac97_device);
 212 }
 213
 214 module_init(zylonite_init);
 215 module_exit(zylonite_exit);
 216
 217 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
 218 MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
 219 MODULE_LICENSE("GPL");