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/*
* File: sound/soc/blackfin/bf5xx-ad193x.c
* Author: Barry Song <Barry.Song@analog.com>
*
* Created: Thur June 4 2009
* Description: Board driver for ad193x 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/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/ad193x.h"
#include "bf5xx-tdm.h"
static struct snd_soc_card bf5xx_ad193x;
static int bf5xx_ad193x_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->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
unsigned int clk = 0;
unsigned int channel_map[] = {0, 1, 2, 3, 4, 5, 6, 7};
int ret = 0;
switch (params_rate(params)) {
case 48000:
clk = 24576000;
break;
}
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk,
SND_SOC_CLOCK_IN);
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;
}
#define BF5XX_AD193X_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
SND_SOC_DAIFMT_CBM_CFM)
static struct snd_soc_ops bf5xx_ad193x_ops = {
.hw_params = bf5xx_ad193x_hw_params,
};
static struct snd_soc_dai_link bf5xx_ad193x_dai[] = {
{
.name = "ad193x",
.stream_name = "AD193X",
.cpu_dai_name = "bfin-tdm.0",
.codec_dai_name ="ad193x-hifi",
.platform_name = "bfin-tdm-pcm-audio",
.codec_name = "spi0.5",
.ops = &bf5xx_ad193x_ops,
.dai_fmt = BF5XX_AD193X_DAIFMT,
},
{
.name = "ad193x",
.stream_name = "AD193X",
.cpu_dai_name = "bfin-tdm.1",
.codec_dai_name ="ad193x-hifi",
.platform_name = "bfin-tdm-pcm-audio",
.codec_name = "spi0.5",
.ops = &bf5xx_ad193x_ops,
.dai_fmt = BF5XX_AD193X_DAIFMT,
},
};
static struct snd_soc_card bf5xx_ad193x = {
.name = "bfin-ad193x",
.owner = THIS_MODULE,
.dai_link = &bf5xx_ad193x_dai[CONFIG_SND_BF5XX_SPORT_NUM],
.num_links = 1,
};
static struct platform_device *bfxx_ad193x_snd_device;
static int __init bf5xx_ad193x_init(void)
{
int ret;
bfxx_ad193x_snd_device = platform_device_alloc("soc-audio", -1);
if (!bfxx_ad193x_snd_device)
return -ENOMEM;
platform_set_drvdata(bfxx_ad193x_snd_device, &bf5xx_ad193x);
ret = platform_device_add(bfxx_ad193x_snd_device);
if (ret)
platform_device_put(bfxx_ad193x_snd_device);
return ret;
}
static void __exit bf5xx_ad193x_exit(void)
{
platform_device_unregister(bfxx_ad193x_snd_device);
}
module_init(bf5xx_ad193x_init);
module_exit(bf5xx_ad193x_exit);
/* Module information */
MODULE_AUTHOR("Barry Song");
MODULE_DESCRIPTION("ALSA SoC AD193X board driver");
MODULE_LICENSE("GPL");
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