2008-11-21 14:01:41 +00:00
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/*
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* zylonite.c -- SoC audio for Zylonite
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*
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* Copyright 2008 Wolfson Microelectronics PLC.
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include "../codecs/wm9713.h"
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#include "pxa2xx-pcm.h"
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#include "pxa2xx-ac97.h"
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#include "pxa-ssp.h"
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static struct snd_soc_card zylonite;
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static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_MIC("Headset Microphone", NULL),
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SND_SOC_DAPM_MIC("Handset Microphone", NULL),
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SND_SOC_DAPM_SPK("Multiactor", NULL),
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SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
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};
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/* Currently supported audio map */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* Headphone output connected to HPL/HPR */
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{ "Headphone", NULL, "HPL" },
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{ "Headphone", NULL, "HPR" },
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/* On-board earpiece */
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{ "Headset Earpiece", NULL, "OUT3" },
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/* Headphone mic */
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{ "MIC2A", NULL, "Mic Bias" },
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{ "Mic Bias", NULL, "Headset Microphone" },
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/* On-board mic */
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{ "MIC1", NULL, "Mic Bias" },
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{ "Mic Bias", NULL, "Handset Microphone" },
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/* Multiactor differentially connected over SPKL/SPKR */
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{ "Multiactor", NULL, "SPKL" },
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{ "Multiactor", NULL, "SPKR" },
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};
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static int zylonite_wm9713_init(struct snd_soc_codec *codec)
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{
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/* Currently we only support use of the AC97 clock here. If
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* CLK_POUT is selected by SW15 then the clock API will need
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* to be used to request and enable it here.
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*/
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snd_soc_dapm_new_controls(codec, zylonite_dapm_widgets,
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ARRAY_SIZE(zylonite_dapm_widgets));
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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/* Static setup for now */
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snd_soc_dapm_enable_pin(codec, "Headphone");
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snd_soc_dapm_enable_pin(codec, "Headset Earpiece");
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snd_soc_dapm_sync(codec);
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return 0;
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}
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static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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unsigned int pll_out = 0;
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unsigned int acds = 0;
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unsigned int wm9713_div = 0;
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int ret = 0;
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switch (params_rate(params)) {
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case 8000:
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wm9713_div = 12;
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pll_out = 2048000;
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break;
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case 16000:
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wm9713_div = 6;
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pll_out = 4096000;
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break;
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case 48000:
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default:
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wm9713_div = 2;
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pll_out = 12288000;
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acds = 1;
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break;
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}
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_tdm_slot(cpu_dai,
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params_channels(params),
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params_channels(params));
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, pll_out);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_AUDIO_DIV_ACDS, acds);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
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if (ret < 0)
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return ret;
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/* Note that if the PLL is in use the WM9713_PCMCLK_PLL_DIV needs
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* to be set instead.
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*/
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ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
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WM9713_PCMDIV(wm9713_div));
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops zylonite_voice_ops = {
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.hw_params = zylonite_voice_hw_params,
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};
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static struct snd_soc_dai_link zylonite_dai[] = {
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{
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.name = "AC97",
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.stream_name = "AC97 HiFi",
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.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
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.codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
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.init = zylonite_wm9713_init,
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},
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{
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.name = "AC97 Aux",
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.stream_name = "AC97 Aux",
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.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
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.codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],
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},
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{
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.name = "WM9713 Voice",
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.stream_name = "WM9713 Voice",
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.cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3],
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.codec_dai = &wm9713_dai[WM9713_DAI_PCM_VOICE],
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.ops = &zylonite_voice_ops,
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},
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};
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static struct snd_soc_card zylonite = {
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.name = "Zylonite",
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2008-12-02 16:01:14 +00:00
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.platform = &pxa2xx_soc_platform,
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2008-11-21 14:01:41 +00:00
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.dai_link = zylonite_dai,
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.num_links = ARRAY_SIZE(zylonite_dai),
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};
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static struct snd_soc_device zylonite_snd_ac97_devdata = {
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.card = &zylonite,
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.codec_dev = &soc_codec_dev_wm9713,
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};
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static struct platform_device *zylonite_snd_ac97_device;
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static int __init zylonite_init(void)
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{
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int ret;
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zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
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if (!zylonite_snd_ac97_device)
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return -ENOMEM;
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platform_set_drvdata(zylonite_snd_ac97_device,
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&zylonite_snd_ac97_devdata);
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zylonite_snd_ac97_devdata.dev = &zylonite_snd_ac97_device->dev;
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ret = platform_device_add(zylonite_snd_ac97_device);
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if (ret != 0)
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platform_device_put(zylonite_snd_ac97_device);
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return ret;
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}
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static void __exit zylonite_exit(void)
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{
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platform_device_unregister(zylonite_snd_ac97_device);
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}
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module_init(zylonite_init);
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module_exit(zylonite_exit);
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
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MODULE_LICENSE("GPL");
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