[deliverable/linux.git] / sound / soc / blackfin / bf5xx-ssm2602.c

/*
 * File:         sound/soc/blackfin/bf5xx-ssm2602.c
 * Author:       Cliff Cai <Cliff.Cai@analog.com>
 *
 * Created:      Tue June 06 2008
 * Description:  board driver for SSM2602 sound chip
 *
 * Modified:
 *               Copyright 2008 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * 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, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>

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

#include <asm/dma.h>
#include <asm/portmux.h>
#include <linux/gpio.h>
#include "../codecs/ssm2602.h"
#include "bf5xx-sport.h"
#include "bf5xx-i2s-pcm.h"

static struct snd_soc_card bf5xx_ssm2602;

static int bf5xx_ssm2602_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	pr_debug("%s enter\n", __func__);
	snd_soc_dai_set_drvdata(cpu_dai, sport_handle);
	return 0;
}

static int bf5xx_ssm2602_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 clk = 0;
	int ret = 0;

	pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
		params_format(params));
	/*
	 * If you are using a crystal source which frequency is not 12MHz
	 * then modify the below case statement with frequency of the crystal.
	 *
	 * If you are using the SPORT to generate clocking then this is
	 * where to do it.
	 */

	switch (params_rate(params)) {
	case 8000:
	case 16000:
	case 48000:
	case 96000:
	case 11025:
	case 22050:
	case 44100:
		clk = 12000000;
		break;
	}

	/*
	 * CODEC is master for BCLK and LRC in this configuration.
	 */

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;
	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk,
		SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops bf5xx_ssm2602_ops = {
	.startup = bf5xx_ssm2602_startup,
	.hw_params = bf5xx_ssm2602_hw_params,
};

static struct snd_soc_dai_link bf5xx_ssm2602_dai = {
	.name = "ssm2602",
	.stream_name = "SSM2602",
	.cpu_dai_name = "bf5xx-i2s",
	.codec_dai_name = "ssm2602-hifi",
	.platform_name = "bf5xx-pcm-audio",
	.codec_name = "ssm2602-codec.0-001b",
	.ops = &bf5xx_ssm2602_ops,
};

static struct snd_soc_card bf5xx_ssm2602 = {
	.name = "bf5xx_ssm2602",
	.dai_link = &bf5xx_ssm2602_dai,
	.num_links = 1,
};

static struct platform_device *bf5xx_ssm2602_snd_device;

static int __init bf5xx_ssm2602_init(void)
{
	int ret;

	pr_debug("%s enter\n", __func__);
	bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
	if (!bf5xx_ssm2602_snd_device)
		return -ENOMEM;

	platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
	ret = platform_device_add(bf5xx_ssm2602_snd_device);

	if (ret)
		platform_device_put(bf5xx_ssm2602_snd_device);

	return ret;
}

static void __exit bf5xx_ssm2602_exit(void)
{
	pr_debug("%s enter\n", __func__);
	platform_device_unregister(bf5xx_ssm2602_snd_device);
}

module_init(bf5xx_ssm2602_init);
module_exit(bf5xx_ssm2602_exit);

/* Module information */
MODULE_AUTHOR("Cliff Cai");
MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
MODULE_LICENSE("GPL");
Commit	Line	Data
a7e7f54f CC	1	/*
	2	* File: sound/soc/blackfin/bf5xx-ssm2602.c
	3	* Author: Cliff Cai <Cliff.Cai@analog.com>
	4	*
	5	* Created: Tue June 06 2008
	6	* Description: board driver for SSM2602 sound chip
	7	*
	8	* Modified:
	9	* Copyright 2008 Analog Devices Inc.
	10	*
	11	* Bugs: Enter bugs at http://blackfin.uclinux.org/
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or
	16	* (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, see the file COPYING, or write
	25	* to the Free Software Foundation, Inc.,
	26	* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	27	*/
	28
	29	#include <linux/module.h>
	30	#include <linux/moduleparam.h>
	31	#include <linux/device.h>
	32
	33	#include <sound/core.h>
	34	#include <sound/pcm.h>
	35	#include <sound/soc.h>
a7e7f54f CC	36	#include <sound/pcm_params.h>
	37
	38	#include <asm/dma.h>
	39	#include <asm/portmux.h>
	40	#include <linux/gpio.h>
	41	#include "../codecs/ssm2602.h"
	42	#include "bf5xx-sport.h"
	43	#include "bf5xx-i2s-pcm.h"
a7e7f54f	44
87506549	45	static struct snd_soc_card bf5xx_ssm2602;
a7e7f54f CC	46
	47	static int bf5xx_ssm2602_startup(struct snd_pcm_substream *substream)
	48	{
	49	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	50	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
a7e7f54f CC	51
a7e7f54f CC	52	pr_debug("%s enter\n", __func__);
f0fba2ad	53	snd_soc_dai_set_drvdata(cpu_dai, sport_handle);
a7e7f54f CC	54	return 0;
	55	}
	56
	57	static int bf5xx_ssm2602_hw_params(struct snd_pcm_substream *substream,
	58	struct snd_pcm_hw_params *params)
	59	{
	60	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	61	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	62	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
a7e7f54f CC	63	unsigned int clk = 0;
	64	int ret = 0;
	65
	66	pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
	67	params_format(params));
	68	/*
	69	* If you are using a crystal source which frequency is not 12MHz
	70	* then modify the below case statement with frequency of the crystal.
	71	*
	72	* If you are using the SPORT to generate clocking then this is
	73	* where to do it.
	74	*/
	75
	76	switch (params_rate(params)) {
	77	case 8000:
	78	case 16000:
	79	case 48000:
	80	case 96000:
	81	case 11025:
	82	case 22050:
	83	case 44100:
	84	clk = 12000000;
	85	break;
	86	}
	87
	88	/*
	89	* CODEC is master for BCLK and LRC in this configuration.
	90	*/
	91
	92	/* set codec DAI configuration */
9b0db7e7	93	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
a7e7f54f CC	94	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBM_CFM);
	95	if (ret < 0)
	96	return ret;
	97	/* set cpu DAI configuration */
9b0db7e7	98	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
a7e7f54f CC	99	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBM_CFM);
	100	if (ret < 0)
	101	return ret;
	102
9b0db7e7	103	ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk,
a7e7f54f CC	104	SND_SOC_CLOCK_IN);
	105	if (ret < 0)
	106	return ret;
	107
	108	return 0;
	109	}
	110
	111	static struct snd_soc_ops bf5xx_ssm2602_ops = {
	112	.startup = bf5xx_ssm2602_startup,
	113	.hw_params = bf5xx_ssm2602_hw_params,
	114	};
	115
	116	static struct snd_soc_dai_link bf5xx_ssm2602_dai = {
	117	.name = "ssm2602",
	118	.stream_name = "SSM2602",
f0fba2ad LG	119	.cpu_dai_name = "bf5xx-i2s",
	120	.codec_dai_name = "ssm2602-hifi",
	121	.platform_name = "bf5xx-pcm-audio",
81d7da54	122	.codec_name = "ssm2602-codec.0-001b",
a7e7f54f CC	123	.ops = &bf5xx_ssm2602_ops,
	124	};
	125
87506549	126	static struct snd_soc_card bf5xx_ssm2602 = {
a7e7f54f CC	127	.name = "bf5xx_ssm2602",
	128	.dai_link = &bf5xx_ssm2602_dai,
	129	.num_links = 1,
	130	};
	131
f274143f	132	static struct platform_device *bf5xx_ssm2602_snd_device;
a7e7f54f CC	133
	134	static int __init bf5xx_ssm2602_init(void)
	135	{
	136	int ret;
	137
	138	pr_debug("%s enter\n", __func__);
f274143f BS	139	bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
f274143f BS	140	if (!bf5xx_ssm2602_snd_device)
a7e7f54f CC	141	return -ENOMEM;
a7e7f54f CC	142
f0fba2ad	143	platform_set_drvdata(bf5xx_ssm2602_snd_device, &bf5xx_ssm2602);
f274143f	144	ret = platform_device_add(bf5xx_ssm2602_snd_device);
a7e7f54f CC	145
a7e7f54f CC	146	if (ret)
f274143f	147	platform_device_put(bf5xx_ssm2602_snd_device);
a7e7f54f CC	148
	149	return ret;
	150	}
	151
	152	static void __exit bf5xx_ssm2602_exit(void)
	153	{
	154	pr_debug("%s enter\n", __func__);
f274143f	155	platform_device_unregister(bf5xx_ssm2602_snd_device);
a7e7f54f CC	156	}
	157
	158	module_init(bf5xx_ssm2602_init);
	159	module_exit(bf5xx_ssm2602_exit);
	160
	161	/* Module information */
	162	MODULE_AUTHOR("Cliff Cai");
	163	MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
	164	MODULE_LICENSE("GPL");
	165