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

/*
 * overo.c  --  SoC audio for Gumstix Overo
 *
 * Author: Steve Sakoman <steve@sakoman.com>
 *
 * 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 <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.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"

static int overo_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;
	int 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 overo_ops = {
	.hw_params = overo_hw_params,
};

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link overo_dai = {
	.name = "TWL4030",
	.stream_name = "TWL4030",
	.cpu_dai_name = "omap-mcbsp.2",
	.codec_dai_name = "twl4030-hifi",
	.platform_name = "omap-pcm-audio",
	.codec_name = "twl4030-codec",
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBM_CFM,
	.ops = &overo_ops,
};

/* Audio machine driver */
static struct snd_soc_card snd_soc_card_overo = {
	.name = "overo",
	.owner = THIS_MODULE,
	.dai_link = &overo_dai,
	.num_links = 1,
};

static struct platform_device *overo_snd_device;

static int __init overo_soc_init(void)
{
	int ret;

	if (!(machine_is_overo() || machine_is_cm_t35())) {
		pr_debug("Incomatible machine!\n");
		return -ENODEV;
	}
	printk(KERN_INFO "overo SoC init\n");

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

	platform_set_drvdata(overo_snd_device, &snd_soc_card_overo);

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

	return 0;

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

	return ret;
}
module_init(overo_soc_init);

static void __exit overo_soc_exit(void)
{
	platform_device_unregister(overo_snd_device);
}
module_exit(overo_soc_exit);

MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>");
MODULE_DESCRIPTION("ALSA SoC overo");
MODULE_LICENSE("GPL");
Commit	Line	Data
4e207873 SS	1	/*
	2	* overo.c -- SoC audio for Gumstix Overo
	3	*
	4	* Author: Steve Sakoman <steve@sakoman.com>
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* version 2 as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	18	* 02110-1301 USA
	19	*
	20	*/
	21
	22	#include <linux/clk.h>
	23	#include <linux/platform_device.h>
da155d5b	24	#include <linux/module.h>
4e207873 SS	25	#include <sound/core.h>
	26	#include <sound/pcm.h>
	27	#include <sound/soc.h>
4e207873 SS	28
	29	#include <asm/mach-types.h>
	30	#include <mach/hardware.h>
	31	#include <mach/gpio.h>
ce491cf8	32	#include <plat/mcbsp.h>
4e207873 SS	33
	34	#include "omap-mcbsp.h"
	35	#include "omap-pcm.h"
4e207873 SS	36
	37	static int overo_hw_params(struct snd_pcm_substream *substream,
	38	struct snd_pcm_hw_params *params)
	39	{
	40	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad	41	struct snd_soc_dai *codec_dai = rtd->codec_dai;
4e207873 SS	42	int ret;
4e207873 SS	43
4e207873 SS	44	/* Set the codec system clock for DAC and ADC */
	45	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
	46	SND_SOC_CLOCK_IN);
	47	if (ret < 0) {
	48	printk(KERN_ERR "can't set codec system clock\n");
	49	return ret;
	50	}
	51
	52	return 0;
	53	}
	54
	55	static struct snd_soc_ops overo_ops = {
	56	.hw_params = overo_hw_params,
	57	};
	58
	59	/* Digital audio interface glue - connects codec <--> CPU */
	60	static struct snd_soc_dai_link overo_dai = {
	61	.name = "TWL4030",
	62	.stream_name = "TWL4030",
45656b44	63	.cpu_dai_name = "omap-mcbsp.2",
f0fba2ad LG	64	.codec_dai_name = "twl4030-hifi",
	65	.platform_name = "omap-pcm-audio",
	66	.codec_name = "twl4030-codec",
cf9feff2 JN	67	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
cf9feff2 JN	68	SND_SOC_DAIFMT_CBM_CFM,
4e207873 SS	69	.ops = &overo_ops,
	70	};
	71
	72	/* Audio machine driver */
87506549	73	static struct snd_soc_card snd_soc_card_overo = {
4e207873	74	.name = "overo",
b425b884	75	.owner = THIS_MODULE,
4e207873 SS	76	.dai_link = &overo_dai,
	77	.num_links = 1,
	78	};
	79
4e207873 SS	80	static struct platform_device *overo_snd_device;
	81
	82	static int __init overo_soc_init(void)
	83	{
	84	int ret;
	85
8df89bc3 MR	86	if (!(machine_is_overo() \|\| machine_is_cm_t35())) {
8df89bc3 MR	87	pr_debug("Incomatible machine!\n");
4e207873 SS	88	return -ENODEV;
	89	}
	90	printk(KERN_INFO "overo SoC init\n");
	91
	92	overo_snd_device = platform_device_alloc("soc-audio", -1);
	93	if (!overo_snd_device) {
	94	printk(KERN_ERR "Platform device allocation failed\n");
	95	return -ENOMEM;
	96	}
	97
f0fba2ad	98	platform_set_drvdata(overo_snd_device, &snd_soc_card_overo);
4e207873 SS	99
	100	ret = platform_device_add(overo_snd_device);
	101	if (ret)
	102	goto err1;
	103
	104	return 0;
	105
	106	err1:
	107	printk(KERN_ERR "Unable to add platform device\n");
	108	platform_device_put(overo_snd_device);
	109
	110	return ret;
	111	}
	112	module_init(overo_soc_init);
	113
	114	static void __exit overo_soc_exit(void)
	115	{
	116	platform_device_unregister(overo_snd_device);
	117	}
	118	module_exit(overo_soc_exit);
	119
	120	MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>");
	121	MODULE_DESCRIPTION("ALSA SoC overo");
	122	MODULE_LICENSE("GPL");