1f58a9d17SGeoff Levand /* 2f58a9d17SGeoff Levand * PS3 time and rtc routines. 3f58a9d17SGeoff Levand * 4f58a9d17SGeoff Levand * Copyright (C) 2006 Sony Computer Entertainment Inc. 5f58a9d17SGeoff Levand * Copyright 2006 Sony Corp. 6f58a9d17SGeoff Levand * 7f58a9d17SGeoff Levand * This program is free software; you can redistribute it and/or modify 8f58a9d17SGeoff Levand * it under the terms of the GNU General Public License as published by 9f58a9d17SGeoff Levand * the Free Software Foundation; version 2 of the License. 10f58a9d17SGeoff Levand * 11f58a9d17SGeoff Levand * This program is distributed in the hope that it will be useful, 12f58a9d17SGeoff Levand * but WITHOUT ANY WARRANTY; without even the implied warranty of 13f58a9d17SGeoff Levand * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14f58a9d17SGeoff Levand * GNU General Public License for more details. 15f58a9d17SGeoff Levand * 16f58a9d17SGeoff Levand * You should have received a copy of the GNU General Public License 17f58a9d17SGeoff Levand * along with this program; if not, write to the Free Software 18f58a9d17SGeoff Levand * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19f58a9d17SGeoff Levand */ 20f58a9d17SGeoff Levand 21f58a9d17SGeoff Levand #include <linux/kernel.h> 220b5f037aSGeert Uytterhoeven #include <linux/platform_device.h> 23*835ea93eSArnd Bergmann #include <linux/rtc.h> 24f58a9d17SGeoff Levand 257b6a09f3SGeert Uytterhoeven #include <asm/firmware.h> 26f58a9d17SGeoff Levand #include <asm/lv1call.h> 27f58a9d17SGeoff Levand #include <asm/ps3.h> 28f58a9d17SGeoff Levand 29f58a9d17SGeoff Levand #include "platform.h" 30f58a9d17SGeoff Levand 31f58a9d17SGeoff Levand #define dump_tm(_a) _dump_tm(_a, __func__, __LINE__) 32f58a9d17SGeoff Levand static void _dump_tm(const struct rtc_time *tm, const char* func, int line) 33f58a9d17SGeoff Levand { 34f58a9d17SGeoff Levand pr_debug("%s:%d tm_sec %d\n", func, line, tm->tm_sec); 35f58a9d17SGeoff Levand pr_debug("%s:%d tm_min %d\n", func, line, tm->tm_min); 36f58a9d17SGeoff Levand pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour); 37f58a9d17SGeoff Levand pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday); 38f58a9d17SGeoff Levand pr_debug("%s:%d tm_mon %d\n", func, line, tm->tm_mon); 39f58a9d17SGeoff Levand pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year); 40f58a9d17SGeoff Levand pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday); 41f58a9d17SGeoff Levand } 42f58a9d17SGeoff Levand 43f58a9d17SGeoff Levand #define dump_time(_a) _dump_time(_a, __func__, __LINE__) 44848cfdc5SGeoff Levand static void __maybe_unused _dump_time(int time, const char *func, 45f58a9d17SGeoff Levand int line) 46f58a9d17SGeoff Levand { 47f58a9d17SGeoff Levand struct rtc_time tm; 48f58a9d17SGeoff Levand 49f58a9d17SGeoff Levand to_tm(time, &tm); 50f58a9d17SGeoff Levand 51f58a9d17SGeoff Levand pr_debug("%s:%d time %d\n", func, line, time); 52f58a9d17SGeoff Levand _dump_tm(&tm, func, line); 53f58a9d17SGeoff Levand } 54f58a9d17SGeoff Levand 55f58a9d17SGeoff Levand void __init ps3_calibrate_decr(void) 56f58a9d17SGeoff Levand { 57f58a9d17SGeoff Levand int result; 58f58a9d17SGeoff Levand u64 tmp; 59f58a9d17SGeoff Levand 60f58a9d17SGeoff Levand result = ps3_repository_read_be_tb_freq(0, &tmp); 61f58a9d17SGeoff Levand BUG_ON(result); 62f58a9d17SGeoff Levand 63f58a9d17SGeoff Levand ppc_tb_freq = tmp; 64f58a9d17SGeoff Levand ppc_proc_freq = ppc_tb_freq * 40; 65f58a9d17SGeoff Levand } 66f58a9d17SGeoff Levand 67f58a9d17SGeoff Levand static u64 read_rtc(void) 68f58a9d17SGeoff Levand { 69f58a9d17SGeoff Levand int result; 70f58a9d17SGeoff Levand u64 rtc_val; 71f58a9d17SGeoff Levand u64 tb_val; 72f58a9d17SGeoff Levand 73f58a9d17SGeoff Levand result = lv1_get_rtc(&rtc_val, &tb_val); 74f58a9d17SGeoff Levand BUG_ON(result); 75f58a9d17SGeoff Levand 76f58a9d17SGeoff Levand return rtc_val; 77f58a9d17SGeoff Levand } 78f58a9d17SGeoff Levand 79f58a9d17SGeoff Levand unsigned long __init ps3_get_boot_time(void) 80f58a9d17SGeoff Levand { 81d7b98e3dSGeoff Levand return read_rtc() + ps3_os_area_get_rtc_diff(); 82f58a9d17SGeoff Levand } 830b5f037aSGeert Uytterhoeven 840b5f037aSGeert Uytterhoeven static int __init ps3_rtc_init(void) 850b5f037aSGeert Uytterhoeven { 860b5f037aSGeert Uytterhoeven struct platform_device *pdev; 870b5f037aSGeert Uytterhoeven 887b6a09f3SGeert Uytterhoeven if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) 897b6a09f3SGeert Uytterhoeven return -ENODEV; 907b6a09f3SGeert Uytterhoeven 910b5f037aSGeert Uytterhoeven pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0); 920b5f037aSGeert Uytterhoeven 938c6ffba0SRusty Russell return PTR_ERR_OR_ZERO(pdev); 940b5f037aSGeert Uytterhoeven } 958f6b9512SPaul Gortmaker device_initcall(ps3_rtc_init); 96