150 строки
4.0 KiB
C
150 строки
4.0 KiB
C
/*
|
|
* 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;
|
|
unsigned int channel_map[] = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
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, 0xFF, 8, 32);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set cpu DAI channel mapping */
|
|
ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map),
|
|
channel_map, ARRAY_SIZE(channel_map), channel_map);
|
|
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");
|
|
|