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/*
* File: sound/soc/blackfin/bf5xx-ad1938.c
* Author: Barry Song <Barry.Song@analog.com>
*
* Created: Thur June 4 2009
* Description: Board driver for ad1938 sound chip
*
* 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/soc-dapm.h>
#include <sound/pcm_params.h>
#include <asm/blackfin.h>
#include <asm/cacheflush.h>
#include <asm/irq.h>
#include <asm/dma.h>
#include <asm/portmux.h>
#include "../codecs/ad1938.h"
#include "bf5xx-sport.h"
#include "bf5xx-tdm-pcm.h"
#include "bf5xx-tdm.h"
static struct snd_soc_card bf5xx_ad1938;
static int bf5xx_ad1938_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
cpu_dai->private_data = sport_handle;
return 0;
}
static int bf5xx_ad1938_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 *cpu_dai = rtd->dai->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
int ret = 0;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set codec DAI slots, 8 channels, all channels are enabled */
ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 8);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops bf5xx_ad1938_ops = {
.startup = bf5xx_ad1938_startup,
.hw_params = bf5xx_ad1938_hw_params,
};
static struct snd_soc_dai_link bf5xx_ad1938_dai = {
.name = "ad1938",
.stream_name = "AD1938",
.cpu_dai = &bf5xx_tdm_dai,
.codec_dai = &ad1938_dai,
.ops = &bf5xx_ad1938_ops,
};
static struct snd_soc_card bf5xx_ad1938 = {
.name = "bf5xx_ad1938",
.platform = &bf5xx_tdm_soc_platform,
.dai_link = &bf5xx_ad1938_dai,
.num_links = 1,
};
static struct snd_soc_device bf5xx_ad1938_snd_devdata = {
.card = &bf5xx_ad1938,
.codec_dev = &soc_codec_dev_ad1938,
};
static struct platform_device *bfxx_ad1938_snd_device;
static int __init bf5xx_ad1938_init(void)
{
int ret;
bfxx_ad1938_snd_device = platform_device_alloc("soc-audio", -1);
if (!bfxx_ad1938_snd_device)
return -ENOMEM;
platform_set_drvdata(bfxx_ad1938_snd_device, &bf5xx_ad1938_snd_devdata);
bf5xx_ad1938_snd_devdata.dev = &bfxx_ad1938_snd_device->dev;
ret = platform_device_add(bfxx_ad1938_snd_device);
if (ret)
platform_device_put(bfxx_ad1938_snd_device);
return ret;
}
static void __exit bf5xx_ad1938_exit(void)
{
platform_device_unregister(bfxx_ad1938_snd_device);
}
module_init(bf5xx_ad1938_init);
module_exit(bf5xx_ad1938_exit);
/* Module information */
MODULE_AUTHOR("Barry Song");
MODULE_DESCRIPTION("ALSA SoC AD1938 board driver");
MODULE_LICENSE("GPL");
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