[linux-2.6-block.git] / sound / soc / mxs / mxs-sgtl5000.c

/*
 * Copyright 2011 Freescale Semiconductor, Inc.
 *
 * 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.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <linux/module.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>

#include "../codecs/sgtl5000.h"
#include "mxs-saif.h"

static int mxs_sgtl5000_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;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	unsigned int rate = params_rate(params);
	u32 dai_format, mclk;
	int ret;

	/* sgtl5000 does not support 512*rate when in 96000 fs */
	switch (rate) {
	case 96000:
		mclk = 256 * rate;
		break;
	default:
		mclk = 512 * rate;
		break;
	}

	/* Sgtl5000 sysclk should be >= 8MHz and <= 27M */
	if (mclk < 8000000 || mclk > 27000000)
		return -EINVAL;

	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
	if (ret)
		return ret;

	/* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
	ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
	if (ret)
		return ret;

	/* set codec to slave mode */
	dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBS_CFS;

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, dai_format);
	if (ret)
		return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, dai_format);
	if (ret)
		return ret;

	return 0;
}

static struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
	.hw_params = mxs_sgtl5000_hw_params,
};

static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
	{
		.name		= "HiFi Tx",
		.stream_name	= "HiFi Playback",
		.codec_dai_name	= "sgtl5000",
		.codec_name	= "sgtl5000.0-000a",
		.cpu_dai_name	= "mxs-saif.0",
		.platform_name	= "mxs-pcm-audio.0",
		.ops		= &mxs_sgtl5000_hifi_ops,
	}, {
		.name		= "HiFi Rx",
		.stream_name	= "HiFi Capture",
		.codec_dai_name	= "sgtl5000",
		.codec_name	= "sgtl5000.0-000a",
		.cpu_dai_name	= "mxs-saif.1",
		.platform_name	= "mxs-pcm-audio.1",
		.ops		= &mxs_sgtl5000_hifi_ops,
	},
};

static struct snd_soc_card mxs_sgtl5000 = {
	.name		= "mxs_sgtl5000",
	.owner		= THIS_MODULE,
	.dai_link	= mxs_sgtl5000_dai,
	.num_links	= ARRAY_SIZE(mxs_sgtl5000_dai),
};

static int __devinit mxs_sgtl5000_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &mxs_sgtl5000;
	int ret;

	/*
	 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
	 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
	 * should be >= 8MHz and <= 27M.
	 */
	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
	if (ret)
		return ret;

	card->dev = &pdev->dev;
	platform_set_drvdata(pdev, card);

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

	return 0;
}

static int __devexit mxs_sgtl5000_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	mxs_saif_put_mclk(0);

	snd_soc_unregister_card(card);

	return 0;
}

static struct platform_driver mxs_sgtl5000_audio_driver = {
	.driver = {
		.name = "mxs-sgtl5000",
		.owner = THIS_MODULE,
	},
	.probe = mxs_sgtl5000_probe,
	.remove = __devexit_p(mxs_sgtl5000_remove),
};

module_platform_driver(mxs_sgtl5000_audio_driver);

MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:mxs-sgtl5000");
Commit	Line	Data
fcb5e47e DA	1	/*
	2	* Copyright 2011 Freescale Semiconductor, Inc.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along
	15	* with this program; if not, write to the Free Software Foundation, Inc.,
	16	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/device.h>
	21	#include <sound/core.h>
	22	#include <sound/pcm.h>
	23	#include <sound/soc.h>
	24	#include <sound/jack.h>
	25	#include <sound/soc-dapm.h>
	26	#include <asm/mach-types.h>
	27
	28	#include "../codecs/sgtl5000.h"
	29	#include "mxs-saif.h"
	30
	31	static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
	32	struct snd_pcm_hw_params *params)
	33	{
	34	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	35	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	36	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	37	unsigned int rate = params_rate(params);
	38	u32 dai_format, mclk;
	39	int ret;
	40
	41	/* sgtl5000 does not support 512rate when in 96000 fs /
	42	switch (rate) {
	43	case 96000:
	44	mclk = 256 * rate;
	45	break;
	46	default:
	47	mclk = 512 * rate;
	48	break;
	49	}
	50
	51	/* Sgtl5000 sysclk should be >= 8MHz and <= 27M */
	52	if (mclk < 8000000 \|\| mclk > 27000000)
	53	return -EINVAL;
	54
	55	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
	56	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
	57	if (ret)
	58	return ret;
	59
	60	/* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
	61	ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
	62	if (ret)
	63	return ret;
	64
65	/* set codec to slave mode */
66	dai_format = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
67	SND_SOC_DAIFMT_CBS_CFS;
68
69	/* set codec DAI configuration */
70	ret = snd_soc_dai_set_fmt(codec_dai, dai_format);
71	if (ret)
72	return ret;
73
74	/* set cpu DAI configuration */
75	ret = snd_soc_dai_set_fmt(cpu_dai, dai_format);
76	if (ret)
77	return ret;
78
79	return 0;
80	}
81
82	static struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
83	.hw_params = mxs_sgtl5000_hw_params,
84	};
85
86	static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
87	{
78a262c8	88	.name = "HiFi Tx",
fcb5e47e DA	89	.stream_name = "HiFi Playback",
	90	.codec_dai_name = "sgtl5000",
	91	.codec_name = "sgtl5000.0-000a",
	92	.cpu_dai_name = "mxs-saif.0",
	93	.platform_name = "mxs-pcm-audio.0",
	94	.ops = &mxs_sgtl5000_hifi_ops,
78a262c8 DA	95	}, {
	96	.name = "HiFi Rx",
	97	.stream_name = "HiFi Capture",
	98	.codec_dai_name = "sgtl5000",
	99	.codec_name = "sgtl5000.0-000a",
	100	.cpu_dai_name = "mxs-saif.1",
	101	.platform_name = "mxs-pcm-audio.1",
	102	.ops = &mxs_sgtl5000_hifi_ops,
fcb5e47e DA	103	},
	104	};
	105
	106	static struct snd_soc_card mxs_sgtl5000 = {
	107	.name = "mxs_sgtl5000",
a5b68348	108	.owner = THIS_MODULE,
fcb5e47e DA	109	.dai_link = mxs_sgtl5000_dai,
	110	.num_links = ARRAY_SIZE(mxs_sgtl5000_dai),
	111	};
	112
	113	static int __devinit mxs_sgtl5000_probe(struct platform_device *pdev)
	114	{
	115	struct snd_soc_card *card = &mxs_sgtl5000;
	116	int ret;
	117
	118	/*
	119	* Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
	120	* The Sgtl5000 sysclk is derived from saif0 mclk and it's range
	121	* should be >= 8MHz and <= 27M.
	122	*/
	123	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
	124	if (ret)
	125	return ret;
	126
	127	card->dev = &pdev->dev;
	128	platform_set_drvdata(pdev, card);
	129
	130	ret = snd_soc_register_card(card);
	131	if (ret) {
	132	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
	133	ret);
	134	return ret;
	135	}
	136
	137	return 0;
	138	}
	139
	140	static int __devexit mxs_sgtl5000_remove(struct platform_device *pdev)
	141	{
	142	struct snd_soc_card *card = platform_get_drvdata(pdev);
	143
	144	mxs_saif_put_mclk(0);
	145
	146	snd_soc_unregister_card(card);
	147
	148	return 0;
	149	}
	150
	151	static struct platform_driver mxs_sgtl5000_audio_driver = {
	152	.driver = {
	153	.name = "mxs-sgtl5000",
	154	.owner = THIS_MODULE,
	155	},
	156	.probe = mxs_sgtl5000_probe,
	157	.remove = __devexit_p(mxs_sgtl5000_remove),
	158	};
	159
85aa0960	160	module_platform_driver(mxs_sgtl5000_audio_driver);
fcb5e47e DA	161
	162	MODULE_AUTHOR("Freescale Semiconductor, Inc.");
	163	MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
	164	MODULE_LICENSE("GPL");
9fd369b1	165	MODULE_ALIAS("platform:mxs-sgtl5000");