bfin-eval-adau1373.c
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/*
* Machine driver for EVAL-ADAU1373 on Analog Devices bfin
* evaluation boards.
*
* Copyright 2011 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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include "../codecs/adau1373.h"
static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = {
SND_SOC_DAPM_LINE("Line In1", NULL),
SND_SOC_DAPM_LINE("Line In2", NULL),
SND_SOC_DAPM_LINE("Line In3", NULL),
SND_SOC_DAPM_LINE("Line In4", NULL),
SND_SOC_DAPM_LINE("Line Out1", NULL),
SND_SOC_DAPM_LINE("Line Out2", NULL),
SND_SOC_DAPM_LINE("Stereo Out", NULL),
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_HP("Earpiece", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
};
static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = {
{ "AIN1L", NULL, "Line In1" },
{ "AIN1R", NULL, "Line In1" },
{ "AIN2L", NULL, "Line In2" },
{ "AIN2R", NULL, "Line In2" },
{ "AIN3L", NULL, "Line In3" },
{ "AIN3R", NULL, "Line In3" },
{ "AIN4L", NULL, "Line In4" },
{ "AIN4R", NULL, "Line In4" },
/* MICBIAS can be connected via a jumper to the line-in jack, since w
don't know which one is going to be used, just power both. */
{ "Line In1", NULL, "MICBIAS1" },
{ "Line In2", NULL, "MICBIAS1" },
{ "Line In3", NULL, "MICBIAS1" },
{ "Line In4", NULL, "MICBIAS1" },
{ "Line In1", NULL, "MICBIAS2" },
{ "Line In2", NULL, "MICBIAS2" },
{ "Line In3", NULL, "MICBIAS2" },
{ "Line In4", NULL, "MICBIAS2" },
{ "Line Out1", NULL, "LOUT1L" },
{ "Line Out1", NULL, "LOUT1R" },
{ "Line Out2", NULL, "LOUT2L" },
{ "Line Out2", NULL, "LOUT2R" },
{ "Headphone", NULL, "HPL" },
{ "Headphone", NULL, "HPR" },
{ "Earpiece", NULL, "EP" },
{ "Speaker", NULL, "SPKL" },
{ "Stereo Out", NULL, "SPKR" },
};
static int bfin_eval_adau1373_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 ret;
int pll_rate;
switch (params_rate(params)) {
case 48000:
case 8000:
case 12000:
case 16000:
case 24000:
case 32000:
pll_rate = 48000 * 1024;
break;
case 44100:
case 7350:
case 11025:
case 14700:
case 22050:
case 29400:
pll_rate = 44100 * 1024;
break;
default:
return -EINVAL;
}
ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
if (ret)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
SND_SOC_CLOCK_IN);
return ret;
}
static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *codec_dai = rtd->codec_dai;
unsigned int pll_rate = 48000 * 1024;
int ret;
ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
if (ret)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
SND_SOC_CLOCK_IN);
return ret;
}
static struct snd_soc_ops bfin_eval_adau1373_ops = {
.hw_params = bfin_eval_adau1373_hw_params,
};
static struct snd_soc_dai_link bfin_eval_adau1373_dai = {
.name = "adau1373",
.stream_name = "adau1373",
.cpu_dai_name = "bfin-i2s.0",
.codec_dai_name = "adau1373-aif1",
.platform_name = "bfin-i2s-pcm-audio",
.codec_name = "adau1373.0-001a",
.ops = &bfin_eval_adau1373_ops,
.init = bfin_eval_adau1373_codec_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
};
static struct snd_soc_card bfin_eval_adau1373 = {
.name = "bfin-eval-adau1373",
.owner = THIS_MODULE,
.dai_link = &bfin_eval_adau1373_dai,
.num_links = 1,
.dapm_widgets = bfin_eval_adau1373_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets),
.dapm_routes = bfin_eval_adau1373_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1373_dapm_routes),
};
static int bfin_eval_adau1373_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &bfin_eval_adau1373;
card->dev = &pdev->dev;
return snd_soc_register_card(&bfin_eval_adau1373);
}
static int bfin_eval_adau1373_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static struct platform_driver bfin_eval_adau1373_driver = {
.driver = {
.name = "bfin-eval-adau1373",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = bfin_eval_adau1373_probe,
.remove = bfin_eval_adau1373_remove,
};
module_platform_driver(bfin_eval_adau1373_driver);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bfin-eval-adau1373");