[deliverable/linux.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 <linux/of.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/soc-dapm.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 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;
	}

	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
	if (ret) {
		dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
			mclk / 1000000, mclk / 1000 % 1000);
		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) {
		dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
			mclk / 1000000, mclk / 1000 % 1000);
		return ret;
	}

	return 0;
}

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

#define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
	SND_SOC_DAIFMT_CBS_CFS)

static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
	{
		.name		= "HiFi Tx",
		.stream_name	= "HiFi Playback",
		.codec_dai_name	= "sgtl5000",
		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
		.ops		= &mxs_sgtl5000_hifi_ops,
		.playback_only	= true,
	}, {
		.name		= "HiFi Rx",
		.stream_name	= "HiFi Capture",
		.codec_dai_name	= "sgtl5000",
		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
		.ops		= &mxs_sgtl5000_hifi_ops,
		.capture_only	= true,
	},
};

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 mxs_sgtl5000_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &mxs_sgtl5000;
	int ret, i;
	struct device_node *np = pdev->dev.of_node;
	struct device_node *saif_np[2], *codec_np;

	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
	codec_np = of_parse_phandle(np, "audio-codec", 0);
	if (!saif_np[0] || !saif_np[1] || !codec_np) {
		dev_err(&pdev->dev, "phandle missing or invalid\n");
		return -EINVAL;
	}

	for (i = 0; i < 2; i++) {
		mxs_sgtl5000_dai[i].codec_name = NULL;
		mxs_sgtl5000_dai[i].codec_of_node = codec_np;
		mxs_sgtl5000_dai[i].cpu_dai_name = NULL;
		mxs_sgtl5000_dai[i].cpu_of_node = saif_np[i];
		mxs_sgtl5000_dai[i].platform_name = NULL;
		mxs_sgtl5000_dai[i].platform_of_node = saif_np[i];
	}

	of_node_put(codec_np);
	of_node_put(saif_np[0]);
	of_node_put(saif_np[1]);

	/*
	 * 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) {
		dev_err(&pdev->dev, "failed to get mclk\n");
		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 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 const struct of_device_id mxs_sgtl5000_dt_ids[] = {
	{ .compatible = "fsl,mxs-audio-sgtl5000", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);

static struct platform_driver mxs_sgtl5000_audio_driver = {
	.driver = {
		.name = "mxs-sgtl5000",
		.of_match_table = mxs_sgtl5000_dt_ids,
	},
	.probe = mxs_sgtl5000_probe,
	.remove = 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>
e968194b SG	21	#include <linux/of.h>
e968194b SG	22	#include <linux/of_device.h>
fcb5e47e DA	23	#include <sound/core.h>
	24	#include <sound/pcm.h>
	25	#include <sound/soc.h>
	26	#include <sound/jack.h>
	27	#include <sound/soc-dapm.h>
fcb5e47e DA	28
	29	#include "../codecs/sgtl5000.h"
	30	#include "mxs-saif.h"
	31
	32	static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
	33	struct snd_pcm_hw_params *params)
	34	{
	35	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	36	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	37	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	38	unsigned int rate = params_rate(params);
bc6a5d64	39	u32 mclk;
fcb5e47e DA	40	int ret;
	41
	42	/* sgtl5000 does not support 512rate when in 96000 fs /
	43	switch (rate) {
	44	case 96000:
	45	mclk = 256 * rate;
	46	break;
	47	default:
	48	mclk = 512 * rate;
	49	break;
	50	}
	51
fcb5e47e DA	52	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
fcb5e47e DA	53	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
d66a5b9c LW	54	if (ret) {
	55	dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
	56	mclk / 1000000, mclk / 1000 % 1000);
fcb5e47e	57	return ret;
d66a5b9c	58	}
fcb5e47e DA	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);
d66a5b9c LW	62	if (ret) {
	63	dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
	64	mclk / 1000000, mclk / 1000 % 1000);
fcb5e47e	65	return ret;
d66a5b9c	66	}
fcb5e47e	67
fcb5e47e DA	68	return 0;
	69	}
	70
	71	static struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
	72	.hw_params = mxs_sgtl5000_hw_params,
	73	};
	74
bc6a5d64 LPC	75	#define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \| \
	76	SND_SOC_DAIFMT_CBS_CFS)
	77
fcb5e47e DA	78	static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
fcb5e47e DA	79	{
78a262c8	80	.name = "HiFi Tx",
fcb5e47e DA	81	.stream_name = "HiFi Playback",
fcb5e47e DA	82	.codec_dai_name = "sgtl5000",
bc6a5d64	83	.dai_fmt = MXS_SGTL5000_DAI_FMT,
fcb5e47e	84	.ops = &mxs_sgtl5000_hifi_ops,
a90e6053	85	.playback_only = true,
78a262c8 DA	86	}, {
	87	.name = "HiFi Rx",
	88	.stream_name = "HiFi Capture",
	89	.codec_dai_name = "sgtl5000",
bc6a5d64	90	.dai_fmt = MXS_SGTL5000_DAI_FMT,
78a262c8	91	.ops = &mxs_sgtl5000_hifi_ops,
a90e6053	92	.capture_only = true,
fcb5e47e DA	93	},
	94	};
	95
	96	static struct snd_soc_card mxs_sgtl5000 = {
	97	.name = "mxs_sgtl5000",
a5b68348	98	.owner = THIS_MODULE,
fcb5e47e DA	99	.dai_link = mxs_sgtl5000_dai,
	100	.num_links = ARRAY_SIZE(mxs_sgtl5000_dai),
	101	};
	102
38f2b8cb	103	static int mxs_sgtl5000_probe(struct platform_device *pdev)
e968194b	104	{
38f2b8cb FE	105	struct snd_soc_card *card = &mxs_sgtl5000;
38f2b8cb FE	106	int ret, i;
e968194b SG	107	struct device_node *np = pdev->dev.of_node;
e968194b SG	108	struct device_node saif_np[2], codec_np;
e968194b SG	109
	110	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
	111	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
	112	codec_np = of_parse_phandle(np, "audio-codec", 0);
	113	if (!saif_np[0] \|\| !saif_np[1] \|\| !codec_np) {
	114	dev_err(&pdev->dev, "phandle missing or invalid\n");
	115	return -EINVAL;
	116	}
	117
	118	for (i = 0; i < 2; i++) {
	119	mxs_sgtl5000_dai[i].codec_name = NULL;
	120	mxs_sgtl5000_dai[i].codec_of_node = codec_np;
	121	mxs_sgtl5000_dai[i].cpu_dai_name = NULL;
bc92657a	122	mxs_sgtl5000_dai[i].cpu_of_node = saif_np[i];
e968194b SG	123	mxs_sgtl5000_dai[i].platform_name = NULL;
	124	mxs_sgtl5000_dai[i].platform_of_node = saif_np[i];
	125	}
	126
	127	of_node_put(codec_np);
	128	of_node_put(saif_np[0]);
	129	of_node_put(saif_np[1]);
	130
fcb5e47e DA	131	/*
	132	* Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
	133	* The Sgtl5000 sysclk is derived from saif0 mclk and it's range
	134	* should be >= 8MHz and <= 27M.
	135	*/
	136	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
d66a5b9c LW	137	if (ret) {
d66a5b9c LW	138	dev_err(&pdev->dev, "failed to get mclk\n");
fcb5e47e	139	return ret;
d66a5b9c	140	}
fcb5e47e DA	141
	142	card->dev = &pdev->dev;
	143	platform_set_drvdata(pdev, card);
	144
	145	ret = snd_soc_register_card(card);
	146	if (ret) {
	147	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
	148	ret);
	149	return ret;
	150	}
	151
	152	return 0;
	153	}
	154
fd582736	155	static int mxs_sgtl5000_remove(struct platform_device *pdev)
fcb5e47e DA	156	{
	157	struct snd_soc_card *card = platform_get_drvdata(pdev);
	158
	159	mxs_saif_put_mclk(0);
	160
	161	snd_soc_unregister_card(card);
	162
	163	return 0;
	164	}
	165
e968194b SG	166	static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
	167	{ .compatible = "fsl,mxs-audio-sgtl5000", },
	168	{ /* sentinel */ }
	169	};
	170	MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);
	171
fcb5e47e DA	172	static struct platform_driver mxs_sgtl5000_audio_driver = {
	173	.driver = {
	174	.name = "mxs-sgtl5000",
e968194b	175	.of_match_table = mxs_sgtl5000_dt_ids,
fcb5e47e DA	176	},
fcb5e47e DA	177	.probe = mxs_sgtl5000_probe,
fd582736	178	.remove = mxs_sgtl5000_remove,
fcb5e47e DA	179	};
fcb5e47e DA	180
85aa0960	181	module_platform_driver(mxs_sgtl5000_audio_driver);
fcb5e47e DA	182
	183	MODULE_AUTHOR("Freescale Semiconductor, Inc.");
	184	MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
	185	MODULE_LICENSE("GPL");
9fd369b1	186	MODULE_ALIAS("platform:mxs-sgtl5000");