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 #include <linux/platform_device.h> 23 24 #include <asm/rtc.h> 25 #include <asm/lv1call.h> 26 #include <asm/ps3.h> 27 28 #include "platform.h" 29 30 #define dump_tm(_a) _dump_tm(_a, __func__, __LINE__) 31 static void _dump_tm(const struct rtc_time *tm, const char* func, int line) 32 { 33 pr_debug("%s:%d tm_sec %d\n", func, line, tm->tm_sec); 34 pr_debug("%s:%d tm_min %d\n", func, line, tm->tm_min); 35 pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour); 36 pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday); 37 pr_debug("%s:%d tm_mon %d\n", func, line, tm->tm_mon); 38 pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year); 39 pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday); 40 } 41 42 #define dump_time(_a) _dump_time(_a, __func__, __LINE__) 43 static void __maybe_unused _dump_time(int time, const char *func, 44 int line) 45 { 46 struct rtc_time tm; 47 48 to_tm(time, &tm); 49 50 pr_debug("%s:%d time %d\n", func, line, time); 51 _dump_tm(&tm, func, line); 52 } 53 54 void __init ps3_calibrate_decr(void) 55 { 56 int result; 57 u64 tmp; 58 59 result = ps3_repository_read_be_tb_freq(0, &tmp); 60 BUG_ON(result); 61 62 ppc_tb_freq = tmp; 63 ppc_proc_freq = ppc_tb_freq * 40; 64 } 65 66 static u64 read_rtc(void) 67 { 68 int result; 69 u64 rtc_val; 70 u64 tb_val; 71 72 result = lv1_get_rtc(&rtc_val, &tb_val); 73 BUG_ON(result); 74 75 return rtc_val; 76 } 77 78 unsigned long __init ps3_get_boot_time(void) 79 { 80 return read_rtc() + ps3_os_area_get_rtc_diff(); 81 } 82 83 static int __init ps3_rtc_init(void) 84 { 85 struct platform_device *pdev; 86 87 pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0); 88 if (IS_ERR(pdev)) 89 return PTR_ERR(pdev); 90 91 return 0; 92 } 93 94 module_init(ps3_rtc_init); 95