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