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https://github.com/AsahiLinux/u-boot
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e96fa6c911
The i2s bus is commonly used with audio codecs. It provides a way to stream digital data sychronously in both directions. U-Boot only supports audio output, so this uclass is very simple, with a single tx_data() method. Add a uclass and a test for i2s. Signed-off-by: Simon Glass <sjg@chromium.org>
25 lines
490 B
C
25 lines
490 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2018 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <i2s.h>
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int i2s_tx_data(struct udevice *dev, void *data, uint data_size)
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{
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struct i2s_ops *ops = i2s_get_ops(dev);
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if (!ops->tx_data)
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return -ENOSYS;
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return ops->tx_data(dev, data, data_size);
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}
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UCLASS_DRIVER(i2s) = {
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.id = UCLASS_I2S,
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.name = "i2s",
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.per_device_auto_alloc_size = sizeof(struct i2s_uc_priv),
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};
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