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/*
* linux/sound/soc/pxa/brownstone.c
*
* Copyright (C) 2011 Marvell International Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*/
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../codecs/wm8994.h"
#include "mmp-sspa.h"
static const struct snd_kcontrol_new brownstone_dapm_control[] = {
SOC_DAPM_PIN_SWITCH("Ext Spk"),
};
static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_HP("Headset Stereophone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Main Mic", NULL),
};
static const struct snd_soc_dapm_route brownstone_audio_map[] = {
{"Ext Spk", NULL, "SPKOUTLP"},
{"Ext Spk", NULL, "SPKOUTLN"},
{"Ext Spk", NULL, "SPKOUTRP"},
{"Ext Spk", NULL, "SPKOUTRN"},
{"Headset Stereophone", NULL, "HPOUT1L"},
{"Headset Stereophone", NULL, "HPOUT1R"},
{"IN1RN", NULL, "Headset Mic"},
{"DMIC1DAT", NULL, "MICBIAS1"},
{"MICBIAS1", NULL, "Main Mic"},
};
static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int freq_out, sspa_mclk, sysclk;
int sspa_div;
if (params_rate(params) > 11025) {
freq_out = params_rate(params) * 512;
sysclk = params_rate(params) * 256;
sspa_mclk = params_rate(params) * 64;
} else {
freq_out = params_rate(params) * 1024;
sysclk = params_rate(params) * 512;
sspa_mclk = params_rate(params) * 64;
}
sspa_div = freq_out;
do_div(sspa_div, sspa_mclk);
snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
/* set wm8994 sysclk */
snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
return 0;
}
/* machine stream operations */
static struct snd_soc_ops brownstone_ops = {
.hw_params = brownstone_wm8994_hw_params,
};
static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
{
.name = "WM8994",
.stream_name = "WM8994 HiFi",
.cpu_dai_name = "mmp-sspa-dai.0",
.codec_dai_name = "wm8994-aif1",
.platform_name = "mmp-pcm-audio",
.codec_name = "wm8994-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &brownstone_ops,
},
};
/* audio machine driver */
static struct snd_soc_card brownstone = {
.name = "brownstone",
.owner = THIS_MODULE,
.dai_link = brownstone_wm8994_dai,
.num_links = ARRAY_SIZE(brownstone_wm8994_dai),
.controls = brownstone_dapm_control,
.num_controls = ARRAY_SIZE(brownstone_dapm_control),
.dapm_widgets = brownstone_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
.dapm_routes = brownstone_audio_map,
.num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
.fully_routed = true,
};
static int brownstone_probe(struct platform_device *pdev)
{
int ret;
brownstone.dev = &pdev->dev;
ret = snd_soc_register_card(&brownstone);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
return ret;
}
static int brownstone_remove(struct platform_device *pdev)
{
snd_soc_unregister_card(&brownstone);
return 0;
}
static struct platform_driver mmp_driver = {
.driver = {
.name = "brownstone-audio",
.pm = &snd_soc_pm_ops,
},
.probe = brownstone_probe,
.remove = brownstone_remove,
};
module_platform_driver(mmp_driver);
MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
MODULE_DESCRIPTION("ALSA SoC Brownstone");
MODULE_LICENSE("GPL");
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