1 /*
2 * PS3 time and rtc routines.
3 *
4 * Copyright (C) 2006 Sony Computer Entertainment Inc.
5 * Copyright 2006 Sony Corp.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <linux/kernel.h>
22
23 #include <asm/rtc.h>
24 #include <asm/lv1call.h>
25 #include <asm/ps3.h>
26
27 #include "platform.h"
28
29 #define dump_tm(_a) _dump_tm(_a, __func__, __LINE__)
_dump_tm(const struct rtc_time * tm,const char * func,int line)30 static void _dump_tm(const struct rtc_time *tm, const char* func, int line)
31 {
32 pr_debug("%s:%d tm_sec %d\n", func, line, tm->tm_sec);
33 pr_debug("%s:%d tm_min %d\n", func, line, tm->tm_min);
34 pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour);
35 pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday);
36 pr_debug("%s:%d tm_mon %d\n", func, line, tm->tm_mon);
37 pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year);
38 pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday);
39 }
40
41 #define dump_time(_a) _dump_time(_a, __func__, __LINE__)
_dump_time(int time,const char * func,int line)42 static void __maybe_unused _dump_time(int time, const char *func,
43 int line)
44 {
45 struct rtc_time tm;
46
47 to_tm(time, &tm);
48
49 pr_debug("%s:%d time %d\n", func, line, time);
50 _dump_tm(&tm, func, line);
51 }
52
ps3_calibrate_decr(void)53 void __init ps3_calibrate_decr(void)
54 {
55 int result;
56 u64 tmp;
57
58 result = ps3_repository_read_be_tb_freq(0, &tmp);
59 BUG_ON(result);
60
61 ppc_tb_freq = tmp;
62 ppc_proc_freq = ppc_tb_freq * 40;
63 }
64
read_rtc(void)65 static u64 read_rtc(void)
66 {
67 int result;
68 u64 rtc_val;
69 u64 tb_val;
70
71 result = lv1_get_rtc(&rtc_val, &tb_val);
72 BUG_ON(result);
73
74 return rtc_val;
75 }
76
ps3_set_rtc_time(struct rtc_time * tm)77 int ps3_set_rtc_time(struct rtc_time *tm)
78 {
79 u64 now = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
80 tm->tm_hour, tm->tm_min, tm->tm_sec);
81
82 ps3_os_area_set_rtc_diff(now - read_rtc());
83 return 0;
84 }
85
ps3_get_rtc_time(struct rtc_time * tm)86 void ps3_get_rtc_time(struct rtc_time *tm)
87 {
88 to_tm(read_rtc() + ps3_os_area_get_rtc_diff(), tm);
89 tm->tm_year -= 1900;
90 tm->tm_mon -= 1;
91 }
92
ps3_get_boot_time(void)93 unsigned long __init ps3_get_boot_time(void)
94 {
95 return read_rtc() + ps3_os_area_get_rtc_diff();
96 }
97