916daba8a9
CPUFreq support for Loongson 2F requires an external timer. Because the frequency of the MIPS Timer is related to the CPU frequency which itself is variable another timer of constant frequency is required. Export the mfgpt0 counter disable / enable operations for the coming suspend support to suspend / resume the timer. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: cpufreq@vger.kernel.org, Cc: Dave Jones <davej@redhat.com>, Cc: Dominik Brodowski <linux@dominikbrodowski.net>, Cc: yanh@lemote.com Cc: huhb@lemote.com, Patchwork: http://patchwork.linux-mips.org/patch/658/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
31 lines
852 B
C
31 lines
852 B
C
/*
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* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
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* Author: Fuxin Zhang, zhangfx@lemote.com
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*
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* Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
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* Author: Wu Zhangjin, wuzj@lemote.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <asm/mc146818-time.h>
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#include <asm/time.h>
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#include <loongson.h>
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#include <cs5536/cs5536_mfgpt.h>
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void __init plat_time_init(void)
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{
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/* setup mips r4k timer */
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mips_hpt_frequency = cpu_clock_freq / 2;
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setup_mfgpt0_timer();
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}
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void read_persistent_clock(struct timespec *ts)
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{
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ts->tv_sec = mc146818_get_cmos_time();
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ts->tv_nsec = 0;
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}
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