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

   1/*
   2 * Copyright (c) 2013 Google, Inc
   3 *
   4 * (C) Copyright 2012
   5 * Pavel Herrmann <morpheus.ibis@gmail.com>
   6 *
   7 * SPDX-License-Identifier:     GPL-2.0+
   8 */
   9
  10#include <common.h>
  11#include <dm.h>
  12#include <dm-demo.h>
  13#include <errno.h>
  14#include <fdtdec.h>
  15#include <malloc.h>
  16#include <asm/io.h>
  17#include <linux/list.h>
  18
  19DECLARE_GLOBAL_DATA_PTR;
  20
  21UCLASS_DRIVER(demo) = {
  22        .name           = "demo",
  23        .id             = UCLASS_DEMO,
  24};
  25
  26int demo_hello(struct udevice *dev, int ch)
  27{
  28        const struct demo_ops *ops = device_get_ops(dev);
  29
  30        if (!ops->hello)
  31                return -ENOSYS;
  32
  33        return ops->hello(dev, ch);
  34}
  35
  36int demo_status(struct udevice *dev, int *status)
  37{
  38        const struct demo_ops *ops = device_get_ops(dev);
  39
  40        if (!ops->status)
  41                return -ENOSYS;
  42
  43        return ops->status(dev, status);
  44}
  45
  46int demo_parse_dt(struct udevice *dev)
  47{
  48        struct dm_demo_pdata *pdata = dev_get_platdata(dev);
  49        int dn = dev->of_offset;
  50
  51        pdata->sides = fdtdec_get_int(gd->fdt_blob, dn, "sides", 0);
  52        pdata->colour = fdt_getprop(gd->fdt_blob, dn, "colour", NULL);
  53        if (!pdata->sides || !pdata->colour) {
  54                debug("%s: Invalid device tree data\n", __func__);
  55                return -EINVAL;
  56        }
  57
  58        return 0;
  59}
  60