2 * Instantiate mmio-mapped RTC chips based on device tree information
4 * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
11 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/of_platform.h>
15 #include <linux/slab.h>
17 static __initdata struct {
18 const char *compatible;
21 { "ds1743-nvram", "rtc-ds1742" },
24 void __init of_instantiate_rtc(void)
26 struct device_node *node;
30 for (i = 0; i < ARRAY_SIZE(of_rtc_table); i++) {
31 char *plat_name = of_rtc_table[i].plat_name;
33 for_each_compatible_node(node, NULL,
34 of_rtc_table[i].compatible) {
37 res = kmalloc(sizeof(*res), GFP_KERNEL);
39 printk(KERN_ERR "OF RTC: Out of memory "
40 "allocating resource structure for %s\n",
45 err = of_address_to_resource(node, 0, res);
47 printk(KERN_ERR "OF RTC: Error "
48 "translating resources for %s\n",
53 printk(KERN_INFO "OF_RTC: %s is a %s @ 0x%llx-0x%llx\n",
54 node->full_name, plat_name,
55 (unsigned long long)res->start,
56 (unsigned long long)res->end);
57 platform_device_register_simple(plat_name, -1, res, 1);