pcm030-audio-fabric.c
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/*
* Phytec pcm030 driver for the PSC of the Freescale MPC52xx
* configured as AC97 interface
*
* Copyright 2008 Jon Smirl, Digispeaker
* Author: Jon Smirl <jonsmirl@gmail.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <sound/soc.h>
#include "mpc5200_dma.h"
#define DRV_NAME "pcm030-audio-fabric"
struct pcm030_audio_data {
struct snd_soc_card *card;
struct platform_device *codec_device;
};
static struct snd_soc_dai_link pcm030_fabric_dai[] = {
{
.name = "AC97.0",
.stream_name = "AC97 Analog",
.codec_dai_name = "wm9712-hifi",
.cpu_dai_name = "mpc5200-psc-ac97.0",
.codec_name = "wm9712-codec",
},
{
.name = "AC97.1",
.stream_name = "AC97 IEC958",
.codec_dai_name = "wm9712-aux",
.cpu_dai_name = "mpc5200-psc-ac97.1",
.codec_name = "wm9712-codec",
},
};
static struct snd_soc_card pcm030_card = {
.name = "pcm030",
.owner = THIS_MODULE,
.dai_link = pcm030_fabric_dai,
.num_links = ARRAY_SIZE(pcm030_fabric_dai),
};
static int pcm030_fabric_probe(struct platform_device *op)
{
struct device_node *np = op->dev.of_node;
struct device_node *platform_np;
struct snd_soc_card *card = &pcm030_card;
struct pcm030_audio_data *pdata;
int ret;
int i;
if (!of_machine_is_compatible("phytec,pcm030"))
return -ENODEV;
pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data),
GFP_KERNEL);
if (!pdata)
return -ENOMEM;
card->dev = &op->dev;
pdata->card = card;
platform_np = of_parse_phandle(np, "asoc-platform", 0);
if (!platform_np) {
dev_err(&op->dev, "ac97 not registered\n");
return -ENODEV;
}
for (i = 0; i < card->num_links; i++)
card->dai_link[i].platform_of_node = platform_np;
ret = request_module("snd-soc-wm9712");
if (ret)
dev_err(&op->dev, "request_module returned: %d\n", ret);
pdata->codec_device = platform_device_alloc("wm9712-codec", -1);
if (!pdata->codec_device)
dev_err(&op->dev, "platform_device_alloc() failed\n");
ret = platform_device_add(pdata->codec_device);
if (ret)
dev_err(&op->dev, "platform_device_add() failed: %d\n", ret);
ret = snd_soc_register_card(card);
if (ret)
dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
platform_set_drvdata(op, pdata);
return ret;
}
static int pcm030_fabric_remove(struct platform_device *op)
{
struct pcm030_audio_data *pdata = platform_get_drvdata(op);
int ret;
ret = snd_soc_unregister_card(pdata->card);
platform_device_unregister(pdata->codec_device);
return ret;
}
static struct of_device_id pcm030_audio_match[] = {
{ .compatible = "phytec,pcm030-audio-fabric", },
{}
};
MODULE_DEVICE_TABLE(of, pcm030_audio_match);
static struct platform_driver pcm030_fabric_driver = {
.probe = pcm030_fabric_probe,
.remove = pcm030_fabric_remove,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
.of_match_table = pcm030_audio_match,
},
};
module_platform_driver(pcm030_fabric_driver);
MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
MODULE_LICENSE("GPL");