[linux-2.6-block.git] / sound / soc / fsl / imx-spdif.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;
	struct snd_soc_dai_link_component *comp;
	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);
	comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
	if (!data || !comp) {
		ret = -ENOMEM;
		goto end;
	}

	data->dai.cpus		= &comp[0];
	data->dai.codecs	= &comp[1];
	data->dai.platforms	= &comp[2];

	data->dai.num_cpus	= 1;
	data->dai.num_codecs	= 1;
	data->dai.num_platforms	= 1;

	data->dai.name = "S/PDIF PCM";
	data->dai.stream_name = "S/PDIF PCM";
	data->dai.codecs->dai_name = "snd-soc-dummy-dai";
	data->dai.codecs->name = "snd-soc-dummy";
	data->dai.cpus->of_node = spdif_np;
	data->dai.platforms->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");
Commit	Line	Data
58dbd101 AD	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// Copyright (C) 2013 Freescale Semiconductor, Inc.
2a956ec0 NC	4
	5	#include <linux/module.h>
	6	#include <linux/of_platform.h>
	7	#include <sound/soc.h>
	8
	9	struct imx_spdif_data {
14c3aa98	10	struct snd_soc_dai_link dai;
2a956ec0	11	struct snd_soc_card card;
2a956ec0 NC	12	};
	13
	14	static int imx_spdif_audio_probe(struct platform_device *pdev)
	15	{
	16	struct device_node spdif_np, np = pdev->dev.of_node;
	17	struct imx_spdif_data *data;
8337ef4f	18	struct snd_soc_dai_link_component *comp;
14c3aa98	19	int ret = 0;
2a956ec0 NC	20
	21	spdif_np = of_parse_phandle(np, "spdif-controller", 0);
	22	if (!spdif_np) {
	23	dev_err(&pdev->dev, "failed to find spdif-controller\n");
	24	ret = -EINVAL;
	25	goto end;
	26	}
	27
	28	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
9e8f5299	29	comp = devm_kzalloc(&pdev->dev, 3 * sizeof(*comp), GFP_KERNEL);
8337ef4f	30	if (!data \|\| !comp) {
2a956ec0 NC	31	ret = -ENOMEM;
	32	goto end;
	33	}
	34
8337ef4f KM	35	data->dai.cpus = &comp[0];
8337ef4f KM	36	data->dai.codecs = &comp[1];
9e8f5299	37	data->dai.platforms = &comp[2];
8337ef4f KM	38
	39	data->dai.num_cpus = 1;
	40	data->dai.num_codecs = 1;
9e8f5299	41	data->dai.num_platforms = 1;
8337ef4f	42
14c3aa98 NC	43	data->dai.name = "S/PDIF PCM";
14c3aa98 NC	44	data->dai.stream_name = "S/PDIF PCM";
8337ef4f KM	45	data->dai.codecs->dai_name = "snd-soc-dummy-dai";
	46	data->dai.codecs->name = "snd-soc-dummy";
	47	data->dai.cpus->of_node = spdif_np;
9e8f5299	48	data->dai.platforms->of_node = spdif_np;
14c3aa98 NC	49	data->dai.playback_only = true;
14c3aa98 NC	50	data->dai.capture_only = true;
2a956ec0	51
14c3aa98 NC	52	if (of_property_read_bool(np, "spdif-out"))
	53	data->dai.capture_only = false;
	54
	55	if (of_property_read_bool(np, "spdif-in"))
	56	data->dai.playback_only = false;
2a956ec0	57
14c3aa98	58	if (data->dai.playback_only && data->dai.capture_only) {
2a956ec0	59	dev_err(&pdev->dev, "no enabled S/PDIF DAI link\n");
14c3aa98	60	goto end;
2a956ec0 NC	61	}
	62
	63	data->card.dev = &pdev->dev;
14c3aa98 NC	64	data->card.dai_link = &data->dai;
14c3aa98 NC	65	data->card.num_links = 1;
7a3a9070	66	data->card.owner = THIS_MODULE;
2a956ec0 NC	67
	68	ret = snd_soc_of_parse_card_name(&data->card, "model");
	69	if (ret)
14c3aa98	70	goto end;
2a956ec0	71
ff27d9b3	72	ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
2363d85f	73	if (ret && ret != -EPROBE_DEFER)
2a956ec0	74	dev_err(&pdev->dev, "snd_soc_register_card failed: %d\n", ret);
2a956ec0	75
2a956ec0	76	end:
aa4ac920	77	of_node_put(spdif_np);
2a956ec0 NC	78
	79	return ret;
	80	}
	81
2a956ec0 NC	82	static const struct of_device_id imx_spdif_dt_ids[] = {
	83	{ .compatible = "fsl,imx-audio-spdif", },
	84	{ /* sentinel */ }
	85	};
	86	MODULE_DEVICE_TABLE(of, imx_spdif_dt_ids);
	87
	88	static struct platform_driver imx_spdif_driver = {
	89	.driver = {
	90	.name = "imx-spdif",
43ac9469	91	.pm = &snd_soc_pm_ops,
2a956ec0 NC	92	.of_match_table = imx_spdif_dt_ids,
	93	},
	94	.probe = imx_spdif_audio_probe,
2a956ec0 NC	95	};
	96
	97	module_platform_driver(imx_spdif_driver);
	98
	99	MODULE_AUTHOR("Freescale Semiconductor, Inc.");
	100	MODULE_DESCRIPTION("Freescale i.MX S/PDIF machine driver");
	101	MODULE_LICENSE("GPL v2");
	102	MODULE_ALIAS("platform:imx-spdif");