mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 08:31:03 +00:00
4395e06eb9
Implement a Miscellaneous uclass with generic read or write operations. This class is used only for those do not fit other more general classes. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Simon Glass <sjg@chromium.org>
51 lines
1 KiB
C
51 lines
1 KiB
C
/*
|
|
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <misc.h>
|
|
|
|
/*
|
|
* Implement a miscellaneous uclass for those do not fit other more
|
|
* general classes. A set of generic read, write and ioctl methods may
|
|
* be used to access the device.
|
|
*/
|
|
|
|
int misc_read(struct udevice *dev, int offset, void *buf, int size)
|
|
{
|
|
const struct misc_ops *ops = device_get_ops(dev);
|
|
|
|
if (!ops->read)
|
|
return -ENOSYS;
|
|
|
|
return ops->read(dev, offset, buf, size);
|
|
}
|
|
|
|
int misc_write(struct udevice *dev, int offset, void *buf, int size)
|
|
{
|
|
const struct misc_ops *ops = device_get_ops(dev);
|
|
|
|
if (!ops->write)
|
|
return -ENOSYS;
|
|
|
|
return ops->write(dev, offset, buf, size);
|
|
}
|
|
|
|
int misc_ioctl(struct udevice *dev, unsigned long request, void *buf)
|
|
{
|
|
const struct misc_ops *ops = device_get_ops(dev);
|
|
|
|
if (!ops->ioctl)
|
|
return -ENOSYS;
|
|
|
|
return ops->ioctl(dev, request, buf);
|
|
}
|
|
|
|
UCLASS_DRIVER(misc) = {
|
|
.id = UCLASS_MISC,
|
|
.name = "misc",
|
|
};
|