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