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__) 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__) 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 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 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 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 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 93 unsigned long __init ps3_get_boot_time(void) 94 { 95 return read_rtc() + ps3_os_area_get_rtc_diff(); 96 } 97