1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2014 NVIDIA Corporation
4 * Copyright © 2015 Broadcom Corporation
9 #include <linux/of_address.h>
10 #include <linux/slab.h>
11 #include <linux/soc/brcmstb/brcmstb.h>
12 #include <linux/sys_soc.h>
14 #include <soc/brcmstb/common.h>
17 static u32 product_id;
19 static const struct of_device_id brcmstb_machine_match[] = {
20 { .compatible = "brcm,brcmstb", },
24 bool soc_is_brcmstb(void)
26 const struct of_device_id *match;
27 struct device_node *root;
29 root = of_find_node_by_path("/");
33 match = of_match_node(brcmstb_machine_match, root);
39 u32 brcmstb_get_family_id(void)
43 EXPORT_SYMBOL(brcmstb_get_family_id);
45 u32 brcmstb_get_product_id(void)
49 EXPORT_SYMBOL(brcmstb_get_product_id);
51 static const struct of_device_id sun_top_ctrl_match[] = {
52 { .compatible = "brcm,bcm7125-sun-top-ctrl", },
53 { .compatible = "brcm,bcm7346-sun-top-ctrl", },
54 { .compatible = "brcm,bcm7358-sun-top-ctrl", },
55 { .compatible = "brcm,bcm7360-sun-top-ctrl", },
56 { .compatible = "brcm,bcm7362-sun-top-ctrl", },
57 { .compatible = "brcm,bcm7420-sun-top-ctrl", },
58 { .compatible = "brcm,bcm7425-sun-top-ctrl", },
59 { .compatible = "brcm,bcm7429-sun-top-ctrl", },
60 { .compatible = "brcm,bcm7435-sun-top-ctrl", },
61 { .compatible = "brcm,brcmstb-sun-top-ctrl", },
65 static int __init brcmstb_soc_device_early_init(void)
67 struct device_node *sun_top_ctrl;
68 void __iomem *sun_top_ctrl_base;
71 /* We could be on a multi-platform kernel, don't make this fatal but
74 sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
78 sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
79 if (!sun_top_ctrl_base) {
84 family_id = readl(sun_top_ctrl_base);
85 product_id = readl(sun_top_ctrl_base + 0x4);
86 iounmap(sun_top_ctrl_base);
88 of_node_put(sun_top_ctrl);
91 early_initcall(brcmstb_soc_device_early_init);
93 static int __init brcmstb_soc_device_init(void)
95 struct soc_device_attribute *soc_dev_attr;
96 struct device_node *sun_top_ctrl;
97 struct soc_device *soc_dev;
100 /* We could be on a multi-platform kernel, don't make this fatal but
103 sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
107 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
113 soc_dev_attr->family = kasprintf(GFP_KERNEL, "%x",
115 family_id >> 16 : family_id >> 8);
116 soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%x",
118 product_id >> 16 : product_id >> 8);
119 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c%d",
120 ((product_id & 0xf0) >> 4) + 'A',
123 soc_dev = soc_device_register(soc_dev_attr);
124 if (IS_ERR(soc_dev)) {
125 kfree(soc_dev_attr->family);
126 kfree(soc_dev_attr->soc_id);
127 kfree(soc_dev_attr->revision);
132 of_node_put(sun_top_ctrl);
135 arch_initcall(brcmstb_soc_device_init);