| /* |
| * ASoC HDMI Transmitter driver for IMX development boards |
| * |
| * Copyright (C) 2011-2014 Freescale Semiconductor, Inc. |
| * |
| * based on stmp3780_devb_hdmi.c |
| * |
| * Vladimir Barinov <vbarinov@embeddedalley.com> |
| * |
| * Copyright 2008 SigmaTel, Inc |
| * Copyright 2008 Embedded Alley Solutions, Inc |
| * |
| * 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/module.h> |
| #include <linux/of_platform.h> |
| #include <linux/mfd/mxc-hdmi-core.h> |
| #include <sound/soc.h> |
| |
| #include "imx-hdmi.h" |
| |
| /* imx digital audio interface glue - connects codec <--> CPU */ |
| static struct snd_soc_dai_link imx_hdmi_dai_link = { |
| .name = "i.MX HDMI Audio Tx", |
| .stream_name = "i.MX HDMI Audio Tx", |
| .codec_dai_name = "hdmi-hifi", |
| .codec_name = "hdmi-audio-codec", |
| .platform_name = "imx-hdmi-audio", |
| }; |
| |
| static struct snd_soc_card snd_soc_card_imx_hdmi = { |
| .name = "imx-hdmi-soc", |
| .dai_link = &imx_hdmi_dai_link, |
| .num_links = 1, |
| }; |
| |
| static int imx_hdmi_audio_probe(struct platform_device *pdev) |
| { |
| struct device_node *hdmi_np, *np = pdev->dev.of_node; |
| struct snd_soc_card *card = &snd_soc_card_imx_hdmi; |
| struct platform_device *hdmi_pdev; |
| int ret = 0; |
| |
| if (!hdmi_get_registered()) { |
| dev_err(&pdev->dev, "initialize HDMI-audio failed. load HDMI-video first!\n"); |
| return -ENODEV; |
| } |
| |
| hdmi_np = of_parse_phandle(np, "hdmi-controller", 0); |
| if (!hdmi_np) { |
| dev_err(&pdev->dev, "failed to find hdmi-audio cpudai\n"); |
| ret = -EINVAL; |
| goto end; |
| } |
| |
| hdmi_pdev = of_find_device_by_node(hdmi_np); |
| if (!hdmi_pdev) { |
| dev_err(&pdev->dev, "failed to find SSI platform device\n"); |
| ret = -EINVAL; |
| goto end; |
| } |
| |
| card->dev = &pdev->dev; |
| card->dai_link->cpu_dai_name = dev_name(&hdmi_pdev->dev); |
| |
| platform_set_drvdata(pdev, card); |
| |
| ret = snd_soc_register_card(card); |
| if (ret) |
| dev_err(&pdev->dev, "failed to register card: %d\n", ret); |
| |
| end: |
| if (hdmi_np) |
| of_node_put(hdmi_np); |
| |
| return ret; |
| } |
| |
| static int imx_hdmi_audio_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_card(card); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id imx_hdmi_dt_ids[] = { |
| { .compatible = "fsl,imx-audio-hdmi", }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, imx_hdmi_dt_ids); |
| |
| static struct platform_driver imx_hdmi_audio_driver = { |
| .probe = imx_hdmi_audio_probe, |
| .remove = imx_hdmi_audio_remove, |
| .driver = { |
| .of_match_table = imx_hdmi_dt_ids, |
| .name = "imx-audio-hdmi", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| }, |
| }; |
| |
| module_platform_driver(imx_hdmi_audio_driver); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("IMX HDMI TX ASoC driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:imx-audio-hdmi"); |