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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-3-08 GuEe-GUI the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
static void *ofw_iio_channel_get_by_index(struct rt_ofw_node *np, int index, int *out_channel)
{
void *iio = RT_NULL;
#ifdef RT_USING_OFW
struct rt_ofw_node *iio_np;
struct rt_ofw_cell_args iio_args;
if (!rt_ofw_parse_phandle_cells(np, "io-channels", "#io-channel-cells", index, &iio_args))
{
iio_np = iio_args.data;
if (!rt_ofw_data(iio_np))
{
rt_platform_ofw_request(iio_np);
}
iio = rt_ofw_data(iio_np);
rt_ofw_node_put(iio_np);
if (out_channel)
{
*out_channel = iio_args.args[0];
}
}
#endif /* RT_USING_OFW */
return iio;
}
void *rt_iio_channel_get_by_index(struct rt_device *dev, int index, int *out_channel)
{
void *iio = RT_NULL;
if (!dev || index < 0)
{
return RT_NULL;
}
if (dev->ofw_node)
{
iio = ofw_iio_channel_get_by_index(dev->ofw_node, index, out_channel);
}
return iio;
}
void *rt_iio_channel_get_by_name(struct rt_device *dev, const char *name, int *out_channel)
{
int index;
if (!dev || !name)
{
return RT_NULL;
}
index = rt_dm_dev_prop_index_of_string(dev, "io-channel-names", name);
return rt_iio_channel_get_by_index(dev, index, out_channel);
}
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