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/*
* Machine driver for EVAL-ADAU1x81 on Analog Devices bfin
* evaluation boards.
*
* Copyright 2011-2014 Analog Devices Inc.
* Author: Lars-Peter Clausen <lars@metafoo.de>
*
* Licensed under the GPL-2 or later.
*/
#include <linux/module.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include "../codecs/adau17x1.h"
static const struct snd_soc_dapm_widget bfin_eval_adau1x81_dapm_widgets[] = {
SND_SOC_DAPM_LINE("Stereo In", NULL),
SND_SOC_DAPM_LINE("Beep", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
SND_SOC_DAPM_HP("Headphone", NULL),
};
static const struct snd_soc_dapm_route bfin_eval_adau1x81_dapm_routes[] = {
{ "BEEP", NULL, "Beep" },
{ "LMIC", NULL, "Stereo In" },
{ "LMIC", NULL, "Stereo In" },
{ "Headphone", NULL, "AOUTL" },
{ "Headphone", NULL, "AOUTR" },
{ "Speaker", NULL, "SP" },
};
static int bfin_eval_adau1x81_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;
int pll_rate;
int ret;
switch (params_rate(params)) {
case 48000:
case 8000:
case 12000:
case 16000:
case 24000:
case 32000:
case 96000:
pll_rate = 48000 * 1024;
break;
case 44100:
case 7350:
case 11025:
case 14700:
case 22050:
case 29400:
case 88200:
pll_rate = 44100 * 1024;
break;
default:
return -EINVAL;
}
ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
if (ret)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
SND_SOC_CLOCK_IN);
return ret;
}
static const struct snd_soc_ops bfin_eval_adau1x81_ops = {
.hw_params = bfin_eval_adau1x81_hw_params,
};
static struct snd_soc_dai_link bfin_eval_adau1x81_dai = {
.name = "adau1x81",
.stream_name = "adau1x81",
.cpu_dai_name = "bfin-i2s.0",
.codec_dai_name = "adau-hifi",
.platform_name = "bfin-i2s-pcm-audio",
.codec_name = "adau1781.0-0038",
.ops = &bfin_eval_adau1x81_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
};
static struct snd_soc_card bfin_eval_adau1x81 = {
.name = "bfin-eval-adau1x81",
.driver_name = "eval-adau1x81",
.dai_link = &bfin_eval_adau1x81_dai,
.num_links = 1,
.dapm_widgets = bfin_eval_adau1x81_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x81_dapm_widgets),
.dapm_routes = bfin_eval_adau1x81_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x81_dapm_routes),
.fully_routed = true,
};
static int bfin_eval_adau1x81_probe(struct platform_device *pdev)
{
bfin_eval_adau1x81.dev = &pdev->dev;
return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x81);
}
static struct platform_driver bfin_eval_adau1x81_driver = {
.driver = {
.name = "bfin-eval-adau1x81",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = bfin_eval_adau1x81_probe,
};
module_platform_driver(bfin_eval_adau1x81_driver);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC bfin adau1x81 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bfin-eval-adau1x81");
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