/*
 * Machine driver for EVAL-ADAU1x61MINIZ 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_adau1x61_dapm_widgets[] = {
	SND_SOC_DAPM_LINE("In 1", NULL),
	SND_SOC_DAPM_LINE("In 2", NULL),
	SND_SOC_DAPM_LINE("In 3-4", NULL),

	SND_SOC_DAPM_LINE("Diff Out L", NULL),
	SND_SOC_DAPM_LINE("Diff Out R", NULL),
	SND_SOC_DAPM_LINE("Stereo Out", NULL),
	SND_SOC_DAPM_HP("Capless HP Out", NULL),
};

static const struct snd_soc_dapm_route bfin_eval_adau1x61_dapm_routes[] = {
	{ "LAUX", NULL, "In 3-4" },
	{ "RAUX", NULL, "In 3-4" },
	{ "LINP", NULL, "In 1" },
	{ "LINN", NULL, "In 1"},
	{ "RINP", NULL, "In 2" },
	{ "RINN", NULL, "In 2" },

	{ "In 1", NULL, "MICBIAS" },
	{ "In 2", NULL, "MICBIAS" },

	{ "Capless HP Out", NULL, "LHP" },
	{ "Capless HP Out", NULL, "RHP" },
	{ "Diff Out L", NULL, "LOUT" },
	{ "Diff Out R", NULL, "ROUT" },
	{ "Stereo Out", NULL, "LOUT" },
	{ "Stereo Out", NULL, "ROUT" },
};

static int bfin_eval_adau1x61_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_adau1x61_ops = {
	.hw_params = bfin_eval_adau1x61_hw_params,
};

static struct snd_soc_dai_link bfin_eval_adau1x61_dai = {
	.name = "adau1x61",
	.stream_name = "adau1x61",
	.cpu_dai_name = "bfin-i2s.0",
	.codec_dai_name = "adau-hifi",
	.platform_name = "bfin-i2s-pcm-audio",
	.codec_name = "adau1761.0-0038",
	.ops = &bfin_eval_adau1x61_ops,
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		SND_SOC_DAIFMT_CBM_CFM,
};

static struct snd_soc_card bfin_eval_adau1x61 = {
	.name = "bfin-eval-adau1x61",
	.owner = THIS_MODULE,
	.driver_name = "eval-adau1x61",
	.dai_link = &bfin_eval_adau1x61_dai,
	.num_links = 1,

	.dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
	.dapm_routes = bfin_eval_adau1x61_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
	.fully_routed = true,
};

static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
{
	bfin_eval_adau1x61.dev = &pdev->dev;

	return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
}

static struct platform_driver bfin_eval_adau1x61_driver = {
	.driver = {
		.name = "bfin-eval-adau1x61",
		.pm = &snd_soc_pm_ops,
	},
	.probe = bfin_eval_adau1x61_probe,
};
module_platform_driver(bfin_eval_adau1x61_driver);

MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:bfin-eval-adau1x61");
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