[deliverable/linux.git] / sound / soc / omap / omap2evm.c

/*
 * omap2evm.c  --  SoC audio machine driver for omap2evm board
 *
 * Author: Arun KS <arunks@mistralsolutions.com>
 *
 * Based on sound/soc/omap/overo.c by Steve Sakoman
 *
 * 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.
 *
 * 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 St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/clk.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <plat/mcbsp.h>

#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/twl4030.h"

static int omap2evm_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params,
	struct snd_soc_dai *dai)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	int ret;

	/* 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) {
		printk(KERN_ERR "can't set codec DAI configuration\n");
		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) {
		printk(KERN_ERR "can't set cpu DAI configuration\n");
		return ret;
	}

	/* Set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
					    SND_SOC_CLOCK_IN);
	if (ret < 0) {
		printk(KERN_ERR "can't set codec system clock\n");
		return ret;
	}

	return 0;
}

static struct snd_soc_ops omap2evm_ops = {
	.hw_params = omap2evm_hw_params,
};

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap2evm_dai = {
	.name = "TWL4030",
	.stream_name = "TWL4030",
	.cpu_dai = &omap_mcbsp_dai[0],
	.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
	.ops = &omap2evm_ops,
};

/* Audio machine driver */
static struct snd_soc_card snd_soc_omap2evm = {
	.name = "omap2evm",
	.platform = &omap_soc_platform,
	.dai_link = &omap2evm_dai,
	.num_links = 1,
};

/* Audio subsystem */
static struct snd_soc_device omap2evm_snd_devdata = {
	.card = &snd_soc_omap2evm,
	.codec_dev = &soc_codec_dev_twl4030,
};

static struct platform_device *omap2evm_snd_device;

static int __init omap2evm_soc_init(void)
{
	int ret;

	if (!machine_is_omap2evm()) {
		pr_debug("Not omap2evm!\n");
		return -ENODEV;
	}
	printk(KERN_INFO "omap2evm SoC init\n");

	omap2evm_snd_device = platform_device_alloc("soc-audio", -1);
	if (!omap2evm_snd_device) {
		printk(KERN_ERR "Platform device allocation failed\n");
		return -ENOMEM;
	}

	platform_set_drvdata(omap2evm_snd_device, &omap2evm_snd_devdata);
	omap2evm_snd_devdata.dev = &omap2evm_snd_device->dev;
	*(unsigned int *)omap2evm_dai.cpu_dai->private_data = 1; /* McBSP2 */

	ret = platform_device_add(omap2evm_snd_device);
	if (ret)
		goto err1;

	return 0;

err1:
	printk(KERN_ERR "Unable to add platform device\n");
	platform_device_put(omap2evm_snd_device);

	return ret;
}
module_init(omap2evm_soc_init);

static void __exit omap2evm_soc_exit(void)
{
	platform_device_unregister(omap2evm_snd_device);
}
module_exit(omap2evm_soc_exit);

MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
MODULE_DESCRIPTION("ALSA SoC omap2evm");
MODULE_LICENSE("GPL");
Commit	Line	Data
df573d2f AK	1	/*
	2	* omap2evm.c -- SoC audio machine driver for omap2evm board
	3	*
	4	* Author: Arun KS <arunks@mistralsolutions.com>
	5	*
	6	* Based on sound/soc/omap/overo.c by Steve Sakoman
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* version 2 as published by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*
	22	*/
	23
	24	#include <linux/clk.h>
	25	#include <linux/platform_device.h>
	26	#include <sound/core.h>
	27	#include <sound/pcm.h>
	28	#include <sound/soc.h>
	29	#include <sound/soc-dapm.h>
	30
	31	#include <asm/mach-types.h>
	32	#include <mach/hardware.h>
	33	#include <mach/gpio.h>
ce491cf8	34	#include <plat/mcbsp.h>
df573d2f AK	35
	36	#include "omap-mcbsp.h"
	37	#include "omap-pcm.h"
	38	#include "../codecs/twl4030.h"
	39
	40	static int omap2evm_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	41	struct snd_pcm_hw_params *params,
dee89c4d MB	42	struct snd_soc_dai *dai)
df573d2f AK	43	{
	44	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	45	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	46	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	47	int ret;
	48
	49	/* Set codec DAI configuration */
	50	ret = snd_soc_dai_set_fmt(codec_dai,
	51	SND_SOC_DAIFMT_I2S \|
	52	SND_SOC_DAIFMT_NB_NF \|
	53	SND_SOC_DAIFMT_CBM_CFM);
	54	if (ret < 0) {
	55	printk(KERN_ERR "can't set codec DAI configuration\n");
	56	return ret;
	57	}
	58
	59	/* Set cpu DAI configuration */
	60	ret = snd_soc_dai_set_fmt(cpu_dai,
	61	SND_SOC_DAIFMT_I2S \|
	62	SND_SOC_DAIFMT_NB_NF \|
	63	SND_SOC_DAIFMT_CBM_CFM);
	64	if (ret < 0) {
	65	printk(KERN_ERR "can't set cpu DAI configuration\n");
	66	return ret;
	67	}
	68
	69	/* Set the codec system clock for DAC and ADC */
	70	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	71	SND_SOC_CLOCK_IN);
	72	if (ret < 0) {
	73	printk(KERN_ERR "can't set codec system clock\n");
	74	return ret;
	75	}
	76
	77	return 0;
	78	}
	79
	80	static struct snd_soc_ops omap2evm_ops = {
	81	.hw_params = omap2evm_hw_params,
	82	};
	83
	84	/* Digital audio interface glue - connects codec <--> CPU */
	85	static struct snd_soc_dai_link omap2evm_dai = {
	86	.name = "TWL4030",
	87	.stream_name = "TWL4030",
	88	.cpu_dai = &omap_mcbsp_dai[0],
7154b3e8	89	.codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
df573d2f AK	90	.ops = &omap2evm_ops,
	91	};
	92
	93	/* Audio machine driver */
87506549	94	static struct snd_soc_card snd_soc_omap2evm = {
df573d2f	95	.name = "omap2evm",
87689d56	96	.platform = &omap_soc_platform,
df573d2f AK	97	.dai_link = &omap2evm_dai,
	98	.num_links = 1,
	99	};
	100
	101	/* Audio subsystem */
	102	static struct snd_soc_device omap2evm_snd_devdata = {
87506549	103	.card = &snd_soc_omap2evm,
df573d2f AK	104	.codec_dev = &soc_codec_dev_twl4030,
	105	};
	106
	107	static struct platform_device *omap2evm_snd_device;
	108
	109	static int __init omap2evm_soc_init(void)
	110	{
	111	int ret;
	112
	113	if (!machine_is_omap2evm()) {
	114	pr_debug("Not omap2evm!\n");
	115	return -ENODEV;
	116	}
	117	printk(KERN_INFO "omap2evm SoC init\n");
	118
	119	omap2evm_snd_device = platform_device_alloc("soc-audio", -1);
	120	if (!omap2evm_snd_device) {
	121	printk(KERN_ERR "Platform device allocation failed\n");
	122	return -ENOMEM;
	123	}
	124
	125	platform_set_drvdata(omap2evm_snd_device, &omap2evm_snd_devdata);
	126	omap2evm_snd_devdata.dev = &omap2evm_snd_device->dev;
	127	(unsigned int )omap2evm_dai.cpu_dai->private_data = 1; /* McBSP2 */
	128
	129	ret = platform_device_add(omap2evm_snd_device);
	130	if (ret)
	131	goto err1;
	132
	133	return 0;
	134
	135	err1:
	136	printk(KERN_ERR "Unable to add platform device\n");
	137	platform_device_put(omap2evm_snd_device);
	138
	139	return ret;
	140	}
	141	module_init(omap2evm_soc_init);
	142
	143	static void __exit omap2evm_soc_exit(void)
	144	{
	145	platform_device_unregister(omap2evm_snd_device);
	146	}
	147	module_exit(omap2evm_soc_exit);
	148
	149	MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
	150	MODULE_DESCRIPTION("ALSA SoC omap2evm");
	151	MODULE_LICENSE("GPL");