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 19 DECLARE_GLOBAL_DATA_PTR; 20 21 UCLASS_DRIVER(demo) = { 22 .id = UCLASS_DEMO, 23 }; 24 25 int demo_hello(struct udevice *dev, int ch) 26 { 27 const struct demo_ops *ops = device_get_ops(dev); 28 29 if (!ops->hello) 30 return -ENOSYS; 31 32 return ops->hello(dev, ch); 33 } 34 35 int demo_status(struct udevice *dev, int *status) 36 { 37 const struct demo_ops *ops = device_get_ops(dev); 38 39 if (!ops->status) 40 return -ENOSYS; 41 42 return ops->status(dev, status); 43 } 44 45 int demo_parse_dt(struct udevice *dev) 46 { 47 struct dm_demo_pdata *pdata = dev_get_platdata(dev); 48 int dn = dev->of_offset; 49 50 pdata->sides = fdtdec_get_int(gd->fdt_blob, dn, "sides", 0); 51 pdata->colour = fdt_getprop(gd->fdt_blob, dn, "colour", NULL); 52 if (!pdata->sides || !pdata->colour) { 53 debug("%s: Invalid device tree data\n", __func__); 54 return -EINVAL; 55 } 56 57 return 0; 58 } 59