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 struct device_node *root;
36 root = of_find_node_by_path("/");
40 return of_match_node(brcmstb_machine_match, root) != NULL;
43 static const struct of_device_id sun_top_ctrl_match[] = {
44 { .compatible = "brcm,bcm7125-sun-top-ctrl", },
45 { .compatible = "brcm,bcm7346-sun-top-ctrl", },
46 { .compatible = "brcm,bcm7358-sun-top-ctrl", },
47 { .compatible = "brcm,bcm7360-sun-top-ctrl", },
48 { .compatible = "brcm,bcm7362-sun-top-ctrl", },
49 { .compatible = "brcm,bcm7420-sun-top-ctrl", },
50 { .compatible = "brcm,bcm7425-sun-top-ctrl", },
51 { .compatible = "brcm,bcm7429-sun-top-ctrl", },
52 { .compatible = "brcm,bcm7425-sun-top-ctrl", },
53 { .compatible = "brcm,brcmstb-sun-top-ctrl", },
57 static int __init brcmstb_soc_device_init(void)
59 struct soc_device_attribute *soc_dev_attr;
60 struct soc_device *soc_dev;
61 struct device_node *sun_top_ctrl;
62 void __iomem *sun_top_ctrl_base;
65 sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
69 sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
70 if (!sun_top_ctrl_base)
73 family_id = readl(sun_top_ctrl_base);
74 product_id = readl(sun_top_ctrl_base + 0x4);
76 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
82 soc_dev_attr->family = kasprintf(GFP_KERNEL, "%x",
84 family_id >> 16 : family_id >> 8);
85 soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%x",
87 product_id >> 16 : product_id >> 8);
88 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c%d",
89 ((product_id & 0xf0) >> 4) + 'A',
92 soc_dev = soc_device_register(soc_dev_attr);
93 if (IS_ERR(soc_dev)) {
94 kfree(soc_dev_attr->family);
95 kfree(soc_dev_attr->soc_id);
96 kfree(soc_dev_attr->revision);
105 iounmap(sun_top_ctrl_base);
108 arch_initcall(brcmstb_soc_device_init);