/* * Copyright (C) 2013 Freescale Semiconductor, Inc. * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #include #include #include 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) { dev_err(&pdev->dev, "snd_soc_register_card failed: %d\n", ret); goto end; } 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"); author'>author

path: root/include/uapi

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