94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/**************************************************************************
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*
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* BRIEF MODULE DESCRIPTION
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* timer setup for Ralink RT2880 solution
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*
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* Copyright 2007 Ralink Inc. (bruce_chang@ralinktech.com.tw)
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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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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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**************************************************************************
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* May 2007 Bruce Chang
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*
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* Initial Release
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*
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*
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*
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**************************************************************************
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/timex.h>
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#include <linux/jiffies.h>
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#include <linux/delay.h>
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#include <asm/mipsregs.h>
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#include <asm/hardirq.h>
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#include <asm/div64.h>
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#include <asm/cpu.h>
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#include <asm/time.h>
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#ifdef CONFIG_CLKSRC_MIPS_GIC
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#include <linux/irqchip/mips-gic.h>
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#endif
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#include <asm/rt2880/generic.h>
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#include <asm/rt2880/prom.h>
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#include <asm/rt2880/rt_mmap.h>
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extern unsigned int mips_hpt_frequency;
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extern u32 mips_cpu_feq;
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extern u32 surfboard_sysclk;
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#if defined(CONFIG_RALINK_MT7621)
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static int udelay_recal(void)
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{
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unsigned int i;
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for (i = 1; i < num_present_cpus(); i++)
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cpu_data[i].udelay_val = cpu_data[0].udelay_val;
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return 0;
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}
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postcore_initcall(udelay_recal);
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#endif
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void __init plat_time_init(void)
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{
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#ifdef CONFIG_CLKSRC_MIPS_GIC
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gic_clocksource_init(mips_cpu_feq);
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#else
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mips_hpt_frequency = mips_cpu_feq / 2;
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#endif
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}
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u32 get_surfboard_sysclk(void)
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{
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return surfboard_sysclk;
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}
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EXPORT_SYMBOL(get_surfboard_sysclk);
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