1 /*
2  * Copyright (C) 2017 Socionext Inc.
3  *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <linux/io.h>
9 #include <linux/types.h>
10 
11 #include "sg-regs.h"
12 #include "soc-info.h"
13 
14 static unsigned int __uniphier_get_revision_field(unsigned int mask,
15 						  unsigned int shift)
16 {
17 	u32 revision = readl(SG_REVISION);
18 
19 	return (revision >> shift) & mask;
20 }
21 
22 unsigned int uniphier_get_soc_id(void)
23 {
24 	return __uniphier_get_revision_field(0xff, 16);
25 }
26 
27 unsigned int uniphier_get_soc_model(void)
28 {
29 	return __uniphier_get_revision_field(0x3, 8);
30 }
31 
32 unsigned int uniphier_get_soc_revision(void)
33 {
34 	return __uniphier_get_revision_field(0x1f, 0);
35 }
36