2 * Copyright © 2014 NVIDIA Corporation
3 * Copyright © 2015 Broadcom Corporation
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
17 #include <linux/of_address.h>
18 #include <linux/slab.h>
19 #include <linux/soc/brcmstb/brcmstb.h>
20 #include <linux/sys_soc.h>
22 #include <soc/brcmstb/common.h>
25 static u32 product_id;
27 static const struct of_device_id brcmstb_machine_match[] = {
28 { .compatible = "brcm,brcmstb", },
32 bool soc_is_brcmstb(void)
34 const struct of_device_id *match;
35 struct device_node *root;
37 root = of_find_node_by_path("/");
41 match = of_match_node(brcmstb_machine_match, root);
47 static const struct of_device_id sun_top_ctrl_match[] = {
48 { .compatible = "brcm,brcmstb-sun-top-ctrl", },
52 static int __init brcmstb_soc_device_init(void)
54 struct soc_device_attribute *soc_dev_attr;
55 struct soc_device *soc_dev;
56 struct device_node *sun_top_ctrl;
57 void __iomem *sun_top_ctrl_base;
60 sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
64 sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
65 if (!sun_top_ctrl_base)
68 family_id = readl(sun_top_ctrl_base);
69 product_id = readl(sun_top_ctrl_base + 0x4);
71 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
77 soc_dev_attr->family = kasprintf(GFP_KERNEL, "%x",
79 family_id >> 16 : family_id >> 8);
80 soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%x",
82 product_id >> 16 : product_id >> 8);
83 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c%d",
84 ((product_id & 0xf0) >> 4) + 'A',
87 soc_dev = soc_device_register(soc_dev_attr);
88 if (IS_ERR(soc_dev)) {
89 kfree(soc_dev_attr->family);
90 kfree(soc_dev_attr->soc_id);
91 kfree(soc_dev_attr->revision);
100 iounmap(sun_top_ctrl_base);
103 arch_initcall(brcmstb_soc_device_init);