121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
/*
|
|
* igep0020.c -- SoC audio for IGEP v2
|
|
*
|
|
* 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 <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 igep2_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 igep2_ops = {
|
|
.hw_params = igep2_hw_params,
|
|
};
|
|
|
|
/* Digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link igep2_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 = &igep2_ops,
|
|
};
|
|
|
|
/* Audio machine driver */
|
|
static struct snd_soc_card snd_soc_card_igep2 = {
|
|
.name = "igep2",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = &igep2_dai,
|
|
.num_links = 1,
|
|
};
|
|
|
|
static struct platform_device *igep2_snd_device;
|
|
|
|
static int __init igep2_soc_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_igep0020())
|
|
return -ENODEV;
|
|
printk(KERN_INFO "IGEP v2 SoC init\n");
|
|
|
|
igep2_snd_device = platform_device_alloc("soc-audio", -1);
|
|
if (!igep2_snd_device) {
|
|
printk(KERN_ERR "Platform device allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
platform_set_drvdata(igep2_snd_device, &snd_soc_card_igep2);
|
|
|
|
ret = platform_device_add(igep2_snd_device);
|
|
if (ret)
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
printk(KERN_ERR "Unable to add platform device\n");
|
|
platform_device_put(igep2_snd_device);
|
|
|
|
return ret;
|
|
}
|
|
module_init(igep2_soc_init);
|
|
|
|
static void __exit igep2_soc_exit(void)
|
|
{
|
|
platform_device_unregister(igep2_snd_device);
|
|
}
|
|
module_exit(igep2_soc_exit);
|
|
|
|
MODULE_AUTHOR("Enric Balletbo i Serra <eballetbo@iseebcn.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC IGEP v2");
|
|
MODULE_LICENSE("GPL");
|