LXR uboot/drivers/misc/misc-uclass.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
   4 */
   5
   6#include <common.h>
   7#include <dm.h>
   8#include <errno.h>
   9#include <misc.h>
  10
  11/*
  12 * Implement a  miscellaneous uclass for those do not fit other more
  13 * general classes. A set of generic read, write and ioctl methods may
  14 * be used to access the device.
  15 */
  16
  17int misc_read(struct udevice *dev, int offset, void *buf, int size)
  18{
  19        const struct misc_ops *ops = device_get_ops(dev);
  20
  21        if (!ops->read)
  22                return -ENOSYS;
  23
  24        return ops->read(dev, offset, buf, size);
  25}
  26
  27int misc_write(struct udevice *dev, int offset, void *buf, int size)
  28{
  29        const struct misc_ops *ops = device_get_ops(dev);
  30
  31        if (!ops->write)
  32                return -ENOSYS;
  33
  34        return ops->write(dev, offset, buf, size);
  35}
  36
  37int misc_ioctl(struct udevice *dev, unsigned long request, void *buf)
  38{
  39        const struct misc_ops *ops = device_get_ops(dev);
  40
  41        if (!ops->ioctl)
  42                return -ENOSYS;
  43
  44        return ops->ioctl(dev, request, buf);
  45}
  46
  47int misc_call(struct udevice *dev, int msgid, void *tx_msg, int tx_size,
  48              void *rx_msg, int rx_size)
  49{
  50        const struct misc_ops *ops = device_get_ops(dev);
  51
  52        if (!ops->call)
  53                return -ENOSYS;
  54
  55        return ops->call(dev, msgid, tx_msg, tx_size, rx_msg, rx_size);
  56}
  57
  58int misc_set_enabled(struct udevice *dev, bool val)
  59{
  60        const struct misc_ops *ops = device_get_ops(dev);
  61
  62        if (!ops->set_enabled)
  63                return -ENOSYS;
  64
  65        return ops->set_enabled(dev, val);
  66}
  67
  68UCLASS_DRIVER(misc) = {
  69        .id             = UCLASS_MISC,
  70        .name           = "misc",
  71#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
  72        .post_bind      = dm_scan_fdt_dev,
  73#endif
  74};
  75