linux/sound/soc/fsl/imx-spdif.c
Andra Danciu 58dbd1015d
ASoC: imx-spdif: Switch to SPDX identifier
Adopt the SPDX license identifier headers to ease license compliance
management.

Signed-off-by: Andra Danciu <andradanciu1997@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-04-08 13:53:02 +07:00

93 lines
2.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
//
// Copyright (C) 2013 Freescale Semiconductor, Inc.
#include <linux/module.h>
#include <linux/of_platform.h>
#include <sound/soc.h>
struct imx_spdif_data {
struct snd_soc_dai_link dai;
struct snd_soc_card card;
};
static int imx_spdif_audio_probe(struct platform_device *pdev)
{
struct device_node *spdif_np, *np = pdev->dev.of_node;
struct imx_spdif_data *data;
int ret = 0;
spdif_np = of_parse_phandle(np, "spdif-controller", 0);
if (!spdif_np) {
dev_err(&pdev->dev, "failed to find spdif-controller\n");
ret = -EINVAL;
goto end;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto end;
}
data->dai.name = "S/PDIF PCM";
data->dai.stream_name = "S/PDIF PCM";
data->dai.codec_dai_name = "snd-soc-dummy-dai";
data->dai.codec_name = "snd-soc-dummy";
data->dai.cpu_of_node = spdif_np;
data->dai.platform_of_node = spdif_np;
data->dai.playback_only = true;
data->dai.capture_only = true;
if (of_property_read_bool(np, "spdif-out"))
data->dai.capture_only = false;
if (of_property_read_bool(np, "spdif-in"))
data->dai.playback_only = false;
if (data->dai.playback_only && data->dai.capture_only) {
dev_err(&pdev->dev, "no enabled S/PDIF DAI link\n");
goto end;
}
data->card.dev = &pdev->dev;
data->card.dai_link = &data->dai;
data->card.num_links = 1;
data->card.owner = THIS_MODULE;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto end;
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret && ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "snd_soc_register_card failed: %d\n", ret);
end:
of_node_put(spdif_np);
return ret;
}
static const struct of_device_id imx_spdif_dt_ids[] = {
{ .compatible = "fsl,imx-audio-spdif", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_spdif_dt_ids);
static struct platform_driver imx_spdif_driver = {
.driver = {
.name = "imx-spdif",
.pm = &snd_soc_pm_ops,
.of_match_table = imx_spdif_dt_ids,
},
.probe = imx_spdif_audio_probe,
};
module_platform_driver(imx_spdif_driver);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("Freescale i.MX S/PDIF machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-spdif");