bf5xx-ad1836.c
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/*
* File: sound/soc/blackfin/bf5xx-ad1836.c
* Author: Barry Song <Barry.Song@analog.com>
*
* Created: Aug 4 2009
* Description: Board driver for ad1836 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.
*
*/
#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/ad1836.h"
static struct snd_soc_card bf5xx_ad1836;
static int bf5xx_ad1836_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7};
int ret = 0;
/* 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;
ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32);
if (ret < 0)
return ret;
return 0;
}
#define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \
SND_SOC_DAIFMT_CBM_CFM)
static struct snd_soc_dai_link bf5xx_ad1836_dai = {
.name = "ad1836",
.stream_name = "AD1836",
.codec_dai_name = "ad1836-hifi",
.platform_name = "bfin-i2s-pcm-audio",
.dai_fmt = BF5XX_AD1836_DAIFMT,
.init = bf5xx_ad1836_init,
};
static struct snd_soc_card bf5xx_ad1836 = {
.name = "bfin-ad1836",
.owner = THIS_MODULE,
.dai_link = &bf5xx_ad1836_dai,
.num_links = 1,
};
static int bf5xx_ad1836_driver_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &bf5xx_ad1836;
const char **link_name;
int ret;
link_name = pdev->dev.platform_data;
if (!link_name) {
dev_err(&pdev->dev, "No platform data supplied\n");
return -EINVAL;
}
bf5xx_ad1836_dai.cpu_dai_name = link_name[0];
bf5xx_ad1836_dai.codec_name = link_name[1];
card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);
ret = snd_soc_register_card(card);
if (ret)
dev_err(&pdev->dev, "Failed to register card\n");
return ret;
}
static int bf5xx_ad1836_driver_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static struct platform_driver bf5xx_ad1836_driver = {
.driver = {
.name = "bfin-snd-ad1836",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = bf5xx_ad1836_driver_probe,
.remove = bf5xx_ad1836_driver_remove,
};
module_platform_driver(bf5xx_ad1836_driver);
/* Module information */
MODULE_AUTHOR("Barry Song");
MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
MODULE_LICENSE("GPL");