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/*
* Machine driver for EVAL-ADAV801 and EVAL-ADAV803 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/init.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include "../codecs/adav80x.h"
static const struct snd_soc_dapm_widget bfin_eval_adav80x_dapm_widgets[] = {
SND_SOC_DAPM_LINE("Line Out", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
};
static const struct snd_soc_dapm_route bfin_eval_adav80x_dapm_routes[] = {
{ "Line Out", NULL, "VOUTL" },
{ "Line Out", NULL, "VOUTR" },
{ "VINL", NULL, "Line In" },
{ "VINR", NULL, "Line In" },
};
static int bfin_eval_adav80x_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 *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
int ret;
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret)
return ret;
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
if (ret)
return ret;
ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL,
27000000, params_rate(params) * 256);
if (ret)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1,
params_rate(params) * 256, SND_SOC_CLOCK_IN);
return ret;
}
static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *codec_dai = rtd->codec_dai;
snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0,
SND_SOC_CLOCK_OUT);
snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0,
SND_SOC_CLOCK_OUT);
snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0,
SND_SOC_CLOCK_OUT);
snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0);
return 0;
}
static struct snd_soc_ops bfin_eval_adav80x_ops = {
.hw_params = bfin_eval_adav80x_hw_params,
};
static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = {
{
.name = "adav80x",
.stream_name = "ADAV80x HiFi",
.cpu_dai_name = "bfin-i2s.0",
.codec_dai_name = "adav80x-hifi",
.platform_name = "bfin-i2s-pcm-audio",
.init = bfin_eval_adav80x_codec_init,
.ops = &bfin_eval_adav80x_ops,
},
};
static struct snd_soc_card bfin_eval_adav80x = {
.name = "bfin-eval-adav80x",
.dai_link = bfin_eval_adav80x_dais,
.num_links = ARRAY_SIZE(bfin_eval_adav80x_dais),
.dapm_widgets = bfin_eval_adav80x_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets),
.dapm_routes = bfin_eval_adav80x_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(bfin_eval_adav80x_dapm_routes),
};
enum bfin_eval_adav80x_type {
BFIN_EVAL_ADAV801,
BFIN_EVAL_ADAV803,
};
static int bfin_eval_adav80x_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &bfin_eval_adav80x;
const char *codec_name;
switch (platform_get_device_id(pdev)->driver_data) {
case BFIN_EVAL_ADAV801:
codec_name = "spi0.1";
break;
case BFIN_EVAL_ADAV803:
codec_name = "adav803.0-0034";
break;
default:
return -EINVAL;
}
bfin_eval_adav80x_dais[0].codec_name = codec_name;
card->dev = &pdev->dev;
return snd_soc_register_card(&bfin_eval_adav80x);
}
static int __devexit bfin_eval_adav80x_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static const struct platform_device_id bfin_eval_adav80x_ids[] = {
{ "bfin-eval-adav801", BFIN_EVAL_ADAV801 },
{ "bfin-eval-adav803", BFIN_EVAL_ADAV803 },
{ },
};
MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
static struct platform_driver bfin_eval_adav80x_driver = {
.driver = {
.name = "bfin-eval-adav80x",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = bfin_eval_adav80x_probe,
.remove = __devexit_p(bfin_eval_adav80x_remove),
.id_table = bfin_eval_adav80x_ids,
};
static int __init bfin_eval_adav80x_init(void)
{
return platform_driver_register(&bfin_eval_adav80x_driver);
}
module_init(bfin_eval_adav80x_init);
static void __exit bfin_eval_adav80x_exit(void)
{
platform_driver_unregister(&bfin_eval_adav80x_driver);
}
module_exit(bfin_eval_adav80x_exit);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
MODULE_LICENSE("GPL");
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