mirror of https://gitee.com/openkylin/linux.git
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
|
|
* arch/arm/mach-at91/include/mach/system.h
|
|
*
|
|
* Copyright (C) 2003 SAN People
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __ASM_ARCH_SYSTEM_H
|
|
#define __ASM_ARCH_SYSTEM_H
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/at91_st.h>
|
|
#include <mach/at91_dbgu.h>
|
|
#include <mach/at91_pmc.h>
|
|
|
|
static inline void arch_idle(void)
|
|
{
|
|
/*
|
|
* Disable the processor clock. The processor will be automatically
|
|
* re-enabled by an interrupt or by a reset.
|
|
*/
|
|
#ifdef AT91_PS
|
|
at91_sys_write(AT91_PS_CR, AT91_PS_CR_CPU);
|
|
#else
|
|
at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK);
|
|
#endif
|
|
#ifndef CONFIG_CPU_ARM920T
|
|
/*
|
|
* Set the processor (CP15) into 'Wait for Interrupt' mode.
|
|
* Post-RM9200 processors need this in conjunction with the above
|
|
* to save power when idle.
|
|
*/
|
|
cpu_do_idle();
|
|
#endif
|
|
}
|
|
|
|
#endif
|