sound/soc/samsung/universal8890_dummy.c - LeafOS-Devices/android_kernel_samsung_universal7904 - Gitiles

 /*
  *  espresso7420_dummy.c
  *
  *  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 <linux/of.h>
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/module.h>

 #include <sound/soc.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/initval.h>

 /*#include <mach/regs-pmu.h>*/

 #include "i2s.h"
 #include "i2s-regs.h"

 /* ESPRESSO use CLKOUT from AP */
 #define ESPRESSO_MCLK_FREQ		24000000
 #define ESPRESSO_AUD_PLL_FREQ		491520000

 static bool clkout_enabled;
 static struct snd_soc_card espresso;

 static void espresso_enable_mclk(bool on)
 {
 	pr_debug("%s: %s\n", __func__, on ? "on" : "off");

 	clkout_enabled = on;
 	/*
 	writel(on ? 0x1000 : 0x1001, EXYNOS_PMU_PMU_DEBUG);
 	*/
 }
 #if 0	/* later */
 static int set_aud_pll_rate(unsigned long rate)
 {
 	struct clk *fout_aud_pll;

 	fout_aud_pll = clk_get(espresso.dev, "aud_pll");
 	if (IS_ERR(fout_aud_pll)) {
 		printk(KERN_ERR "%s: failed to get fout_aud_pll\n", __func__);
 		return PTR_ERR(fout_aud_pll);
 	}

 	if (rate == clk_get_rate(fout_aud_pll))
 		goto out;

 	rate += 20;		/* margin */
 	clk_set_rate(fout_aud_pll, rate);
 	pr_debug("%s: aud_pll rate = %ld\n",
 		__func__, clk_get_rate(fout_aud_pll));
 out:
 	clk_put(fout_aud_pll);

 	return 0;
 }
 #endif
 /*
  * ESPRESSO I2S DAI operations. (AP master)
  */
 static int espresso_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;
 	int pll, div, sclk, bfs, psr, rfs, ret;
 	unsigned long rclk;

 	switch (params_format(params)) {
 	case SNDRV_PCM_FORMAT_U24:
 	case SNDRV_PCM_FORMAT_S24:
 		bfs = 48;
 		break;
 	case SNDRV_PCM_FORMAT_U16_LE:
 	case SNDRV_PCM_FORMAT_S16_LE:
 		bfs = 32;
 		break;
 	default:
 		return -EINVAL;
 	}

 	switch (params_rate(params)) {
 	case 16000:
 	case 22050:
 	case 24000:
 	case 32000:
 	case 44100:
 	case 48000:
 	case 88200:
 	case 96000:
 		if (bfs == 48)
 			rfs = 384;
 		else
 			rfs = 256;
 		break;
 	case 64000:
 		rfs = 384;
 		break;
 	case 8000:
 	case 11025:
 	case 12000:
 		if (bfs == 48)
 			rfs = 768;
 		else
 			rfs = 512;
 		break;
 	default:
 		return -EINVAL;
 	}

 	rclk = params_rate(params) * rfs;

 	switch (rclk) {
 	case 4096000:
 	case 5644800:
 	case 6144000:
 	case 8467200:
 	case 9216000:
 		psr = 8;
 		break;
 	case 8192000:
 	case 11289600:
 	case 12288000:
 	case 16934400:
 	case 18432000:
 		psr = 4;
 		break;
 	case 22579200:
 	case 24576000:
 	case 33868800:
 	case 36864000:
 		psr = 2;
 		break;
 	case 67737600:
 	case 73728000:
 		psr = 1;
 		break;
 	default:
 		printk("Not yet supported!\n");
 		return -EINVAL;
 	}

 	/* Set AUD_PLL frequency */
 	sclk = rclk * psr;
 	for (div = 2; div <= 16; div++) {
 		if (sclk * div > ESPRESSO_AUD_PLL_FREQ)
 			break;
 	}
 	pll = sclk * (div - 1);
 // later	set_aud_pll_rate(pll);

 	/* CLKOUT(XXTI) for Codec MCLK */
 	espresso_enable_mclk(true);

 	/* Set CPU DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
 					| SND_SOC_DAIFMT_NB_NF
 					| SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
 					0, SND_SOC_CLOCK_OUT);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
 					0, MOD_OPCLK_PCLK);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_1, 0, 0);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct snd_soc_ops espresso_ops = {
 	.hw_params = espresso_hw_params,
 };
 static const struct snd_soc_component_driver dummy_cmpnt = {
 	.name	= "espresso-audio",
 };
 static struct snd_soc_dai_driver dummy_ext_dai[] = {
 	{
 		.name = "dummy-ext voice call",
 		.playback = {
 			.channels_min = 1,
 			.channels_max = 4,
 			.rate_min = 8000,
 			.rate_max = 48000,
 			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
 					SNDRV_PCM_RATE_48000),
 			.formats = SNDRV_PCM_FMTBIT_S16_LE,
 		},
 		.capture = {
 			.channels_min = 1,
 			.channels_max = 4,
 			.rate_min = 8000,
 			.rate_max = 48000,
 			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
 					SNDRV_PCM_RATE_48000),
 			.formats = SNDRV_PCM_FMTBIT_S16_LE,
 		},
 	},
 	{
 		.name = "dummy-ext bluetooth sco",
 		.playback = {
 			.channels_min = 1,
 			.channels_max = 4,
 			.rate_min = 8000,
 			.rate_max = 16000,
 			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
 			.formats = SNDRV_PCM_FMTBIT_S16_LE,
 		},
 		.capture = {
 			.channels_min = 1,
 			.channels_max = 2,
 			.rate_min = 8000,
 			.rate_max = 16000,
 			.rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
 			.formats = SNDRV_PCM_FMTBIT_S16_LE,
 		},
 	},
 };


 static struct snd_soc_dai_link espresso_dai[] = {
 	{ /* Primary DAI i/f */
 		.name = "playback-pri",
 		.stream_name = "i2s0-pri",
 		.codec_dai_name = "dummy-aif3",
 		.ops = &espresso_ops,
 	},
 	{ /* Secondary DAI i/f */
 		.name = "playback-sec",
 		.stream_name = "i2s0-sec",
 		.cpu_dai_name = "samsung-i2s-sec",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif3",
 		.ops = &espresso_ops,
 	},
 	{ /* voice call */
 		.name = "baseband",
 		.stream_name = "dummy-ext voice call",
 		.cpu_dai_name = "dummy-ext voice call",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif2",
 		.ops = &espresso_ops,
 		.ignore_suspend = 1,
 	},
 	{ /* eax0 playback */
 		.name = "playback-eax0",
 		.stream_name = "eax0",
 		.cpu_dai_name = "samsung-eax.0",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif1",
 		.ops = &espresso_ops,
 	},
 	{ /* eax1 playback */
 		.name = "playback-eax1",
 		.stream_name = "eax1",
 		.cpu_dai_name = "samsung-eax.1",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif1",
 		.ops = &espresso_ops,
 	},
 	{ /* eax2 playback */
 		.name = "playback-eax2",
 		.stream_name = "eax2",
 		.cpu_dai_name = "samsung-eax.2",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif1",
 		.ops = &espresso_ops,
 	},
 	{ /* eax3 playback */
 		.name = "playback-eax3",
 		.stream_name = "eax3",
 		.cpu_dai_name = "samsung-eax.3",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif1",
 		.ops = &espresso_ops,
 	},
 #if defined(CONFIG_SND_SAMSUNG_COMPR)
 	{ /* compress playback */
 		.name = "playback offload",
 		.stream_name = "i2s0-compr",
 		.cpu_dai_name = "samsung-i2s-compr",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif1",
 		.ops = &espresso_ops,
 	},
 #endif
 	{ /* compress capture for visualizer */
 		.name = "compress capture",
 		.stream_name = "compr-cap",
 		.codec_dai_name = "dummy-aif1",
 	},
 	{ /* bluetooth sco */
 		.name = "bluetooth sco",
 		.stream_name = "dummy-ext bluetooth sco",
 		.cpu_dai_name = "dummy-ext bluetooth sco",
 		.platform_name = "snd-soc-dummy",
 		.codec_dai_name = "dummy-aif3",
 		.ops = &espresso_ops,
 		.ignore_suspend = 1,
 	},
 };

 static int espresso_suspend_post(struct snd_soc_card *card)
 {
 	espresso_enable_mclk(false);
 	return 0;
 }

 static int espresso_resume_pre(struct snd_soc_card *card)
 {
 	espresso_enable_mclk(true);
 	return 0;
 }

 static struct snd_soc_card espresso = {
 	.name = "ESPRESSO-I2S",
 	.owner = THIS_MODULE,
 	.suspend_post = espresso_suspend_post,
 	.resume_pre = espresso_resume_pre,
 	.dai_link = espresso_dai,
 	.num_links = ARRAY_SIZE(espresso_dai),
 };

 static int espresso_audio_probe(struct platform_device *pdev)
 {
 	int n, ret;
 	struct device_node *np = pdev->dev.of_node;
 	struct snd_soc_card *card = &espresso;

 	card->dev = &pdev->dev;

 	ret = snd_soc_register_component(card->dev, &dummy_cmpnt,
 			dummy_ext_dai, ARRAY_SIZE(dummy_ext_dai));
 	if (ret != 0)
 		dev_err(&pdev->dev, "Failed to register component: %d\n", ret);

 	for (n = 0; np && n < ARRAY_SIZE(espresso_dai); n++) {
 		if (!espresso_dai[n].cpu_dai_name) {
 			espresso_dai[n].cpu_of_node = of_parse_phandle(np,
 					"samsung,audio-cpu", n);

 			if (!espresso_dai[n].cpu_of_node) {
 				dev_err(&pdev->dev, "Property "
 				"'samsung,audio-cpu' missing or invalid\n");
 				ret = -EINVAL;
 			}
 		}

 		if (!espresso_dai[n].platform_name)
 			espresso_dai[n].platform_of_node = espresso_dai[n].cpu_of_node;

 		espresso_dai[n].codec_name = NULL;
 		espresso_dai[n].codec_of_node = of_parse_phandle(np,
 				"samsung,audio-codec", n);
 		if (!espresso_dai[0].codec_of_node) {
 			dev_err(&pdev->dev,
 			"Property 'samsung,audio-codec' missing or invalid\n");
 			ret = -EINVAL;
 		}
 	}

 	ret = snd_soc_register_card(card);

 	if (ret)
 		dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);

 	return ret;
 }

 static int espresso_audio_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);

 	snd_soc_unregister_card(card);

 	return 0;
 }

 #ifdef CONFIG_OF
 static const struct of_device_id samsung_dummy_of_match[] = {
 	{ .compatible = "samsung,universal-dummy", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, samsung_dummy_of_match);
 #endif /* CONFIG_OF */

 static struct platform_driver espresso_audio_driver = {
 	.driver		= {
 		.name	= "espresso-audio",
 		.owner	= THIS_MODULE,
 		.pm = &snd_soc_pm_ops,
 		.of_match_table = of_match_ptr(samsung_dummy_of_match),
 	},
 	.probe		= espresso_audio_probe,
 	.remove		= espresso_audio_remove,
 };

 module_platform_driver(espresso_audio_driver);

 MODULE_DESCRIPTION("ALSA SoC UNIVERSAL8890 DUMMY");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:espresso-audio");
	/*
	* espresso7420_dummy.c
	*
	* 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 <linux/of.h>
	#include <linux/clk.h>
	#include <linux/io.h>
	#include <linux/module.h>

	#include <sound/soc.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/initval.h>

	/#include <mach/regs-pmu.h>/

	#include "i2s.h"
	#include "i2s-regs.h"

	/* ESPRESSO use CLKOUT from AP */
	#define ESPRESSO_MCLK_FREQ 24000000
	#define ESPRESSO_AUD_PLL_FREQ 491520000

	static bool clkout_enabled;
	static struct snd_soc_card espresso;

	static void espresso_enable_mclk(bool on)
	{
	pr_debug("%s: %s\n", __func__, on ? "on" : "off");

	clkout_enabled = on;
	/*
	writel(on ? 0x1000 : 0x1001, EXYNOS_PMU_PMU_DEBUG);
	*/
	}
	#if 0 /* later */
	static int set_aud_pll_rate(unsigned long rate)
	{
	struct clk *fout_aud_pll;

	fout_aud_pll = clk_get(espresso.dev, "aud_pll");
	if (IS_ERR(fout_aud_pll)) {
	printk(KERN_ERR "%s: failed to get fout_aud_pll\n", __func__);
	return PTR_ERR(fout_aud_pll);
	}

	if (rate == clk_get_rate(fout_aud_pll))
	goto out;

	rate += 20; /* margin */
	clk_set_rate(fout_aud_pll, rate);
	pr_debug("%s: aud_pll rate = %ld\n",
	__func__, clk_get_rate(fout_aud_pll));
	out:
	clk_put(fout_aud_pll);

	return 0;
	}
	#endif
	/*
	* ESPRESSO I2S DAI operations. (AP master)
	*/
	static int espresso_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;
	int pll, div, sclk, bfs, psr, rfs, ret;
	unsigned long rclk;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_U24:
	case SNDRV_PCM_FORMAT_S24:
	bfs = 48;
	break;
	case SNDRV_PCM_FORMAT_U16_LE:
	case SNDRV_PCM_FORMAT_S16_LE:
	bfs = 32;
	break;
	default:
	return -EINVAL;
	}

	switch (params_rate(params)) {
	case 16000:
	case 22050:
	case 24000:
	case 32000:
	case 44100:
	case 48000:
	case 88200:
	case 96000:
	if (bfs == 48)
	rfs = 384;
	else
	rfs = 256;
	break;
	case 64000:
	rfs = 384;
	break;
	case 8000:
	case 11025:
	case 12000:
	if (bfs == 48)
	rfs = 768;
	else
	rfs = 512;
	break;
	default:
	return -EINVAL;
	}

	rclk = params_rate(params) * rfs;

	switch (rclk) {
	case 4096000:
	case 5644800:
	case 6144000:
	case 8467200:
	case 9216000:
	psr = 8;
	break;
	case 8192000:
	case 11289600:
	case 12288000:
	case 16934400:
	case 18432000:
	psr = 4;
	break;
	case 22579200:
	case 24576000:
	case 33868800:
	case 36864000:
	psr = 2;
	break;
	case 67737600:
	case 73728000:
	psr = 1;
	break;
	default:
	printk("Not yet supported!\n");
	return -EINVAL;
	}

	/* Set AUD_PLL frequency */
	sclk = rclk * psr;
	for (div = 2; div <= 16; div++) {
	if (sclk * div > ESPRESSO_AUD_PLL_FREQ)
	break;
	}
	pll = sclk * (div - 1);
	// later set_aud_pll_rate(pll);

	/* CLKOUT(XXTI) for Codec MCLK */
	espresso_enable_mclk(true);

	/* Set CPU DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	\| SND_SOC_DAIFMT_NB_NF
	\| SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
	0, SND_SOC_CLOCK_OUT);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
	0, MOD_OPCLK_PCLK);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_1, 0, 0);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct snd_soc_ops espresso_ops = {
	.hw_params = espresso_hw_params,
	};
	static const struct snd_soc_component_driver dummy_cmpnt = {
	.name = "espresso-audio",
	};
	static struct snd_soc_dai_driver dummy_ext_dai[] = {
	{
	.name = "dummy-ext voice call",
	.playback = {
	.channels_min = 1,
	.channels_max = 4,
	.rate_min = 8000,
	.rate_max = 48000,
	.rates = (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000 \|
	SNDRV_PCM_RATE_48000),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	.capture = {
	.channels_min = 1,
	.channels_max = 4,
	.rate_min = 8000,
	.rate_max = 48000,
	.rates = (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000 \|
	SNDRV_PCM_RATE_48000),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	},
	{
	.name = "dummy-ext bluetooth sco",
	.playback = {
	.channels_min = 1,
	.channels_max = 4,
	.rate_min = 8000,
	.rate_max = 16000,
	.rates = (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	.capture = {
	.channels_min = 1,
	.channels_max = 2,
	.rate_min = 8000,
	.rate_max = 16000,
	.rates = (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_16000),
	.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	},
	};


	static struct snd_soc_dai_link espresso_dai[] = {
	{ /* Primary DAI i/f */
	.name = "playback-pri",
	.stream_name = "i2s0-pri",
	.codec_dai_name = "dummy-aif3",
	.ops = &espresso_ops,
	},
	{ /* Secondary DAI i/f */
	.name = "playback-sec",
	.stream_name = "i2s0-sec",
	.cpu_dai_name = "samsung-i2s-sec",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif3",
	.ops = &espresso_ops,
	},
	{ /* voice call */
	.name = "baseband",
	.stream_name = "dummy-ext voice call",
	.cpu_dai_name = "dummy-ext voice call",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif2",
	.ops = &espresso_ops,
	.ignore_suspend = 1,
	},
	{ /* eax0 playback */
	.name = "playback-eax0",
	.stream_name = "eax0",
	.cpu_dai_name = "samsung-eax.0",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif1",
	.ops = &espresso_ops,
	},
	{ /* eax1 playback */
	.name = "playback-eax1",
	.stream_name = "eax1",
	.cpu_dai_name = "samsung-eax.1",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif1",
	.ops = &espresso_ops,
	},
	{ /* eax2 playback */
	.name = "playback-eax2",
	.stream_name = "eax2",
	.cpu_dai_name = "samsung-eax.2",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif1",
	.ops = &espresso_ops,
	},
	{ /* eax3 playback */
	.name = "playback-eax3",
	.stream_name = "eax3",
	.cpu_dai_name = "samsung-eax.3",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif1",
	.ops = &espresso_ops,
	},
	#if defined(CONFIG_SND_SAMSUNG_COMPR)
	{ /* compress playback */
	.name = "playback offload",
	.stream_name = "i2s0-compr",
	.cpu_dai_name = "samsung-i2s-compr",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif1",
	.ops = &espresso_ops,
	},
	#endif
	{ /* compress capture for visualizer */
	.name = "compress capture",
	.stream_name = "compr-cap",
	.codec_dai_name = "dummy-aif1",
	},
	{ /* bluetooth sco */
	.name = "bluetooth sco",
	.stream_name = "dummy-ext bluetooth sco",
	.cpu_dai_name = "dummy-ext bluetooth sco",
	.platform_name = "snd-soc-dummy",
	.codec_dai_name = "dummy-aif3",
	.ops = &espresso_ops,
	.ignore_suspend = 1,
	},
	};

	static int espresso_suspend_post(struct snd_soc_card *card)
	{
	espresso_enable_mclk(false);
	return 0;
	}

	static int espresso_resume_pre(struct snd_soc_card *card)
	{
	espresso_enable_mclk(true);
	return 0;
	}

	static struct snd_soc_card espresso = {
	.name = "ESPRESSO-I2S",
	.owner = THIS_MODULE,
	.suspend_post = espresso_suspend_post,
	.resume_pre = espresso_resume_pre,
	.dai_link = espresso_dai,
	.num_links = ARRAY_SIZE(espresso_dai),
	};

	static int espresso_audio_probe(struct platform_device *pdev)
	{
	int n, ret;
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &espresso;

	card->dev = &pdev->dev;

	ret = snd_soc_register_component(card->dev, &dummy_cmpnt,
	dummy_ext_dai, ARRAY_SIZE(dummy_ext_dai));
	if (ret != 0)
	dev_err(&pdev->dev, "Failed to register component: %d\n", ret);

	for (n = 0; np && n < ARRAY_SIZE(espresso_dai); n++) {
	if (!espresso_dai[n].cpu_dai_name) {
	espresso_dai[n].cpu_of_node = of_parse_phandle(np,
	"samsung,audio-cpu", n);

	if (!espresso_dai[n].cpu_of_node) {
	dev_err(&pdev->dev, "Property "
	"'samsung,audio-cpu' missing or invalid\n");
	ret = -EINVAL;
	}
	}

	if (!espresso_dai[n].platform_name)
	espresso_dai[n].platform_of_node = espresso_dai[n].cpu_of_node;

	espresso_dai[n].codec_name = NULL;
	espresso_dai[n].codec_of_node = of_parse_phandle(np,
	"samsung,audio-codec", n);
	if (!espresso_dai[0].codec_of_node) {
	dev_err(&pdev->dev,
	"Property 'samsung,audio-codec' missing or invalid\n");
	ret = -EINVAL;
	}
	}

	ret = snd_soc_register_card(card);

	if (ret)
	dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);

	return ret;
	}

	static int espresso_audio_remove(struct platform_device *pdev)
	{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	snd_soc_unregister_card(card);

	return 0;
	}

	#ifdef CONFIG_OF
	static const struct of_device_id samsung_dummy_of_match[] = {
	{ .compatible = "samsung,universal-dummy", },
	{},
	};
	MODULE_DEVICE_TABLE(of, samsung_dummy_of_match);
	#endif /* CONFIG_OF */

	static struct platform_driver espresso_audio_driver = {
	.driver = {
	.name = "espresso-audio",
	.owner = THIS_MODULE,
	.pm = &snd_soc_pm_ops,
	.of_match_table = of_match_ptr(samsung_dummy_of_match),
	},
	.probe = espresso_audio_probe,
	.remove = espresso_audio_remove,
	};

	module_platform_driver(espresso_audio_driver);

	MODULE_DESCRIPTION("ALSA SoC UNIVERSAL8890 DUMMY");
	MODULE_LICENSE("GPL");
	MODULE_ALIAS("platform:espresso-audio");