875065491f
One of the issues with the ASoC v1 API which has been addressed in the ASoC v2 work that Liam Girdwood has done is that the ALSA card provided by ASoC is distributed around the ASoC structures. For example, machine wide data such as the struct snd_card are maintained as part of the CODEC data structure, preventing the use of multiple codecs. This has been addressed by refactoring the data structures so that all the data for the ALSA card is contained in a single structure snd_soc_card which replaces the existing snd_soc_machine and snd_soc_device. Begin the process of backporting this by renaming struct snd_soc_machine to struct snd_soc_card, better reflecting its function and bringing it closer to standard ALSA terminology. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
|
|
* omap3beagle.c -- SoC audio for OMAP3 Beagle
|
|
*
|
|
* 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 <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 <mach/mcbsp.h>
|
|
|
|
#include "omap-mcbsp.h"
|
|
#include "omap-pcm.h"
|
|
#include "../codecs/twl4030.h"
|
|
|
|
static int omap3beagle_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->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 omap3beagle_ops = {
|
|
.hw_params = omap3beagle_hw_params,
|
|
};
|
|
|
|
/* Digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link omap3beagle_dai = {
|
|
.name = "TWL4030",
|
|
.stream_name = "TWL4030",
|
|
.cpu_dai = &omap_mcbsp_dai[0],
|
|
.codec_dai = &twl4030_dai,
|
|
.ops = &omap3beagle_ops,
|
|
};
|
|
|
|
/* Audio machine driver */
|
|
static struct snd_soc_card snd_soc_omap3beagle = {
|
|
.name = "omap3beagle",
|
|
.dai_link = &omap3beagle_dai,
|
|
.num_links = 1,
|
|
};
|
|
|
|
/* Audio subsystem */
|
|
static struct snd_soc_device omap3beagle_snd_devdata = {
|
|
.card = &snd_soc_omap3beagle,
|
|
.platform = &omap_soc_platform,
|
|
.codec_dev = &soc_codec_dev_twl4030,
|
|
};
|
|
|
|
static struct platform_device *omap3beagle_snd_device;
|
|
|
|
static int __init omap3beagle_soc_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_omap3_beagle()) {
|
|
pr_debug("Not OMAP3 Beagle!\n");
|
|
return -ENODEV;
|
|
}
|
|
pr_info("OMAP3 Beagle SoC init\n");
|
|
|
|
omap3beagle_snd_device = platform_device_alloc("soc-audio", -1);
|
|
if (!omap3beagle_snd_device) {
|
|
printk(KERN_ERR "Platform device allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
platform_set_drvdata(omap3beagle_snd_device, &omap3beagle_snd_devdata);
|
|
omap3beagle_snd_devdata.dev = &omap3beagle_snd_device->dev;
|
|
*(unsigned int *)omap3beagle_dai.cpu_dai->private_data = 1; /* McBSP2 */
|
|
|
|
ret = platform_device_add(omap3beagle_snd_device);
|
|
if (ret)
|
|
goto err1;
|
|
|
|
return 0;
|
|
|
|
err1:
|
|
printk(KERN_ERR "Unable to add platform device\n");
|
|
platform_device_put(omap3beagle_snd_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit omap3beagle_soc_exit(void)
|
|
{
|
|
platform_device_unregister(omap3beagle_snd_device);
|
|
}
|
|
|
|
module_init(omap3beagle_soc_init);
|
|
module_exit(omap3beagle_soc_exit);
|
|
|
|
MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>");
|
|
MODULE_DESCRIPTION("ALSA SoC OMAP3 Beagle");
|
|
MODULE_LICENSE("GPL");
|