1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2017 Socionext Inc.
4  *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
5  */
6 
7 #include <linux/io.h>
8 #include <linux/types.h>
9 
10 #include "sg-regs.h"
11 #include "soc-info.h"
12 
13 static unsigned int __uniphier_get_revision_field(unsigned int mask,
14 						  unsigned int shift)
15 {
16 	u32 revision = readl(SG_REVISION);
17 
18 	return (revision >> shift) & mask;
19 }
20 
21 unsigned int uniphier_get_soc_id(void)
22 {
23 	return __uniphier_get_revision_field(0xff, 16);
24 }
25 
26 unsigned int uniphier_get_soc_model(void)
27 {
28 	return __uniphier_get_revision_field(0x7, 8);
29 }
30 
31 unsigned int uniphier_get_soc_revision(void)
32 {
33 	return __uniphier_get_revision_field(0x1f, 0);
34 }
35