mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
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+
|
|
/*
|
|
* Copyright 2018 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <i2s.h>
|
|
|
|
int i2s_tx_data(struct udevice *dev, void *data, uint data_size)
|
|
{
|
|
struct i2s_ops *ops = i2s_get_ops(dev);
|
|
|
|
if (!ops->tx_data)
|
|
return -ENOSYS;
|
|
|
|
return ops->tx_data(dev, data, data_size);
|
|
}
|
|
|
|
UCLASS_DRIVER(i2s) = {
|
|
.id = UCLASS_I2S,
|
|
.name = "i2s",
|
|
.per_device_auto_alloc_size = sizeof(struct i2s_uc_priv),
|
|
};
|