7b6a09f3d6
On non-PS3, we get: | kernel BUG at drivers/rtc/rtc-ps3.c:36! because the rtc-ps3 platform device is registered unconditionally in a kernel with builtin support for PS3. Reported-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* PS3 time and rtc routines.
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*
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* Copyright (C) 2006 Sony Computer Entertainment Inc.
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* Copyright 2006 Sony Corp.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <asm/firmware.h>
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#include <asm/rtc.h>
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#include <asm/lv1call.h>
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#include <asm/ps3.h>
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#include "platform.h"
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#define dump_tm(_a) _dump_tm(_a, __func__, __LINE__)
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static void _dump_tm(const struct rtc_time *tm, const char* func, int line)
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{
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pr_debug("%s:%d tm_sec %d\n", func, line, tm->tm_sec);
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pr_debug("%s:%d tm_min %d\n", func, line, tm->tm_min);
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pr_debug("%s:%d tm_hour %d\n", func, line, tm->tm_hour);
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pr_debug("%s:%d tm_mday %d\n", func, line, tm->tm_mday);
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pr_debug("%s:%d tm_mon %d\n", func, line, tm->tm_mon);
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pr_debug("%s:%d tm_year %d\n", func, line, tm->tm_year);
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pr_debug("%s:%d tm_wday %d\n", func, line, tm->tm_wday);
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}
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#define dump_time(_a) _dump_time(_a, __func__, __LINE__)
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static void __maybe_unused _dump_time(int time, const char *func,
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int line)
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{
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struct rtc_time tm;
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to_tm(time, &tm);
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pr_debug("%s:%d time %d\n", func, line, time);
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_dump_tm(&tm, func, line);
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}
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void __init ps3_calibrate_decr(void)
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{
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int result;
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u64 tmp;
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result = ps3_repository_read_be_tb_freq(0, &tmp);
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BUG_ON(result);
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ppc_tb_freq = tmp;
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ppc_proc_freq = ppc_tb_freq * 40;
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}
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static u64 read_rtc(void)
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{
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int result;
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u64 rtc_val;
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u64 tb_val;
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result = lv1_get_rtc(&rtc_val, &tb_val);
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BUG_ON(result);
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return rtc_val;
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}
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unsigned long __init ps3_get_boot_time(void)
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{
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return read_rtc() + ps3_os_area_get_rtc_diff();
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}
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static int __init ps3_rtc_init(void)
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{
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struct platform_device *pdev;
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if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
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return -ENODEV;
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pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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return 0;
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}
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module_init(ps3_rtc_init);
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