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/*
* ALSA SoC HDMI Audio Layer for MXS
*
* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
*
* Based on stmp3xxx_spdif_dai.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/init.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <mach/dma.h>
#include <mach/hardware.h>
#include <linux/mfd/mxc-hdmi-core.h>
#include "imx-hdmi.h"
static struct snd_soc_dai_driver imx_hdmi_dai = {
.playback = {
.channels_min = 2,
.channels_max = 8,
.rates = MXC_HDMI_RATES_PLAYBACK,
.formats = MXC_HDMI_FORMATS_PLAYBACK,
},
};
static int imx_hdmi_dai_probe(struct platform_device *pdev)
{
struct imx_hdmi *hdmi_data;
int ret = 0;
if (!hdmi_get_registered()) {
dev_err(&pdev->dev, "Failed: Load HDMI-video first.\n");
return -ENODEV;
}
hdmi_data = kzalloc(sizeof(*hdmi_data), GFP_KERNEL);
if (!hdmi_data)
return -ENOMEM;
dev_set_drvdata(&pdev->dev, hdmi_data);
hdmi_data->pdev = pdev;
hdmi_data->irq = platform_get_irq(pdev, 0);
if (hdmi_data->irq <= 0) {
dev_err(&pdev->dev, "MXC hdmi: invalid irq number (%d)\n",
hdmi_data->irq);
goto e_reg_dai;
}
ret = snd_soc_register_dai(&pdev->dev, &imx_hdmi_dai);
if (ret) {
dev_err(&pdev->dev, "register DAI failed\n");
goto e_reg_dai;
}
hdmi_data->soc_platform_pdev =
platform_device_alloc("imx-hdmi-soc-audio", 0);
if (!hdmi_data->soc_platform_pdev) {
dev_err(&pdev->dev, "failed platform_device_alloc\n");
goto e_alloc_dai;
}
platform_set_drvdata(hdmi_data->soc_platform_pdev, hdmi_data);
ret = platform_device_add(hdmi_data->soc_platform_pdev);
if (ret) {
dev_err(&pdev->dev, "failed to add platform device\n");
platform_device_put(hdmi_data->soc_platform_pdev);
goto e_pdev_add;
}
return 0;
e_pdev_add:
platform_device_put(hdmi_data->soc_platform_pdev);
e_alloc_dai:
snd_soc_unregister_dai(&pdev->dev);
e_reg_dai:
kfree(hdmi_data);
return ret;
}
static int __devexit imx_hdmi_dai_remove(struct platform_device *pdev)
{
struct imx_hdmi *hdmi_data = platform_get_drvdata(pdev);
snd_soc_unregister_dai(&pdev->dev);
kfree(hdmi_data);
return 0;
}
static struct platform_driver imx_hdmi_driver = {
.probe = imx_hdmi_dai_probe,
.remove = __devexit_p(imx_hdmi_dai_remove),
.driver = {
.name = "imx-hdmi-soc-dai",
.owner = THIS_MODULE,
},
};
static int __init imx_hdmi_dai_init(void)
{
return platform_driver_register(&imx_hdmi_driver);
}
static void __exit imx_hdmi_dai_exit(void)
{
platform_driver_unregister(&imx_hdmi_driver);
}
module_init(imx_hdmi_dai_init);
module_exit(imx_hdmi_dai_exit);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("IMX HDMI TX DAI");
MODULE_LICENSE("GPL");
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