[deliverable/linux.git] / sound / soc / samsung / snow.c

/*
 * ASoC machine driver for Snow boards
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>

#include <sound/soc.h>

#include "i2s.h"

#define FIN_PLL_RATE		24000000

static struct snd_soc_dai_link snow_dai[] = {
	{
		.name = "Primary",
		.stream_name = "Primary",
		.codec_dai_name = "HiFi",
		.dai_fmt = SND_SOC_DAIFMT_I2S |
				SND_SOC_DAIFMT_NB_NF |
				SND_SOC_DAIFMT_CBS_CFS,
	},
};

static int snow_late_probe(struct snd_soc_card *card)
{
	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
	int ret;

	/* Set the MCLK rate for the codec */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
					FIN_PLL_RATE, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* Select I2S Bus clock to set RCLK and BCLK */
	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
					0, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_card snow_snd = {
	.name = "Snow-I2S",
	.owner = THIS_MODULE,
	.dai_link = snow_dai,
	.num_links = ARRAY_SIZE(snow_dai),

	.late_probe = snow_late_probe,
};

static int snow_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &snow_snd;
	struct device_node *i2s_node, *codec_node;
	int i, ret;

	i2s_node = of_parse_phandle(pdev->dev.of_node,
				    "samsung,i2s-controller", 0);
	if (!i2s_node) {
		dev_err(&pdev->dev,
			"Property 'i2s-controller' missing or invalid\n");
		return -EINVAL;
	}

	codec_node = of_parse_phandle(pdev->dev.of_node,
				      "samsung,audio-codec", 0);
	if (!codec_node) {
		dev_err(&pdev->dev,
			"Property 'audio-codec' missing or invalid\n");
		return -EINVAL;
	}

	for (i = 0; i < ARRAY_SIZE(snow_dai); i++) {
		snow_dai[i].codec_of_node = codec_node;
		snow_dai[i].cpu_of_node = i2s_node;
		snow_dai[i].platform_of_node = i2s_node;
	}

	card->dev = &pdev->dev;

	/* Update card-name if provided through DT, else use default name */
	snd_soc_of_parse_card_name(card, "samsung,model");

	ret = devm_snd_soc_register_card(&pdev->dev, card);
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
		return ret;
	}

	return ret;
}

static const struct of_device_id snow_of_match[] = {
	{ .compatible = "google,snow-audio-max98090", },
	{ .compatible = "google,snow-audio-max98091", },
	{ .compatible = "google,snow-audio-max98095", },
	{},
};
MODULE_DEVICE_TABLE(of, snow_of_match);

static struct platform_driver snow_driver = {
	.driver = {
		.name = "snow-audio",
		.pm = &snd_soc_pm_ops,
		.of_match_table = snow_of_match,
	},
	.probe = snow_probe,
};

module_platform_driver(snow_driver);

MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
MODULE_LICENSE("GPL");
Commit	Line	Data
31c26a6a TB	1	/*
	2	* ASoC machine driver for Snow boards
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* version 2 as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but
	9	* WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	11	* General Public License for more details.
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/platform_device.h>
	16	#include <linux/of.h>
	17	#include <linux/of_device.h>
	18
	19	#include <sound/soc.h>
	20
	21	#include "i2s.h"
	22
	23	#define FIN_PLL_RATE 24000000
	24
	25	static struct snd_soc_dai_link snow_dai[] = {
	26	{
	27	.name = "Primary",
	28	.stream_name = "Primary",
	29	.codec_dai_name = "HiFi",
	30	.dai_fmt = SND_SOC_DAIFMT_I2S \|
	31	SND_SOC_DAIFMT_NB_NF \|
	32	SND_SOC_DAIFMT_CBS_CFS,
	33	},
	34	};
	35
	36	static int snow_late_probe(struct snd_soc_card *card)
	37	{
	38	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
	39	struct snd_soc_dai *cpu_dai = card->rtd[0].cpu_dai;
	40	int ret;
	41
	42	/* Set the MCLK rate for the codec */
	43	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
	44	FIN_PLL_RATE, SND_SOC_CLOCK_IN);
	45	if (ret < 0)
	46	return ret;
	47
	48	/* Select I2S Bus clock to set RCLK and BCLK */
	49	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
	50	0, SND_SOC_CLOCK_IN);
	51	if (ret < 0)
	52	return ret;
	53
	54	return 0;
	55	}
	56
	57	static struct snd_soc_card snow_snd = {
	58	.name = "Snow-I2S",
54d8697f	59	.owner = THIS_MODULE,
31c26a6a TB	60	.dai_link = snow_dai,
	61	.num_links = ARRAY_SIZE(snow_dai),
	62
	63	.late_probe = snow_late_probe,
	64	};
	65
	66	static int snow_probe(struct platform_device *pdev)
	67	{
	68	struct snd_soc_card *card = &snow_snd;
	69	struct device_node i2s_node, codec_node;
	70	int i, ret;
	71
	72	i2s_node = of_parse_phandle(pdev->dev.of_node,
	73	"samsung,i2s-controller", 0);
	74	if (!i2s_node) {
	75	dev_err(&pdev->dev,
	76	"Property 'i2s-controller' missing or invalid\n");
	77	return -EINVAL;
	78	}
	79
	80	codec_node = of_parse_phandle(pdev->dev.of_node,
	81	"samsung,audio-codec", 0);
	82	if (!codec_node) {
	83	dev_err(&pdev->dev,
	84	"Property 'audio-codec' missing or invalid\n");
	85	return -EINVAL;
	86	}
	87
	88	for (i = 0; i < ARRAY_SIZE(snow_dai); i++) {
	89	snow_dai[i].codec_of_node = codec_node;
	90	snow_dai[i].cpu_of_node = i2s_node;
	91	snow_dai[i].platform_of_node = i2s_node;
	92	}
	93
	94	card->dev = &pdev->dev;
	95
00ad93e2 TB	96	/* Update card-name if provided through DT, else use default name */
	97	snd_soc_of_parse_card_name(card, "samsung,model");
	98
31c26a6a TB	99	ret = devm_snd_soc_register_card(&pdev->dev, card);
	100	if (ret) {
	101	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
	102	return ret;
	103	}
	104
	105	return ret;
	106	}
	107
	108	static const struct of_device_id snow_of_match[] = {
	109	{ .compatible = "google,snow-audio-max98090", },
46aed597	110	{ .compatible = "google,snow-audio-max98091", },
31c26a6a TB	111	{ .compatible = "google,snow-audio-max98095", },
	112	{},
	113	};
62e6a3b6	114	MODULE_DEVICE_TABLE(of, snow_of_match);
31c26a6a TB	115
	116	static struct platform_driver snow_driver = {
	117	.driver = {
	118	.name = "snow-audio",
deeaa686	119	.pm = &snd_soc_pm_ops,
31c26a6a TB	120	.of_match_table = snow_of_match,
	121	},
	122	.probe = snow_probe,
	123	};
	124
	125	module_platform_driver(snow_driver);
	126
	127	MODULE_DESCRIPTION("ALSA SoC Audio machine driver for Snow");
	128	MODULE_LICENSE("GPL");