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author | Ingo Molnar <mingo@kernel.org> | 2012-03-30 10:47:19 +0400 |
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committer | Ingo Molnar <mingo@kernel.org> | 2012-03-30 10:50:06 +0400 |
commit | 186e54cbe1145f4d11e32fe10e7e20a11f1b27dd (patch) | |
tree | 9b6cf3667a3ea90e0cec0ea7119688ba76c55a71 /arch/arm/mach-ebsa110/include/mach/system.h | |
parent | 99dd5497e5be4fe4194cad181d45fd6569a930db (diff) | |
parent | 4bde23f8751f388867766b0a62ed1ef8b7e01561 (diff) | |
download | linux-186e54cbe1145f4d11e32fe10e7e20a11f1b27dd.tar.xz |
Merge branch 'linus' into x86/urgent
Merge reason: Needed for include file dependencies.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/arm/mach-ebsa110/include/mach/system.h')
-rw-r--r-- | arch/arm/mach-ebsa110/include/mach/system.h | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/arm/mach-ebsa110/include/mach/system.h b/arch/arm/mach-ebsa110/include/mach/system.h deleted file mode 100644 index 2e4af65edb6f..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/system.h +++ /dev/null @@ -1,37 +0,0 @@ -/* - * arch/arm/mach-ebsa110/include/mach/system.h - * - * Copyright (C) 1996-2000 Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#ifndef __ASM_ARCH_SYSTEM_H -#define __ASM_ARCH_SYSTEM_H - -/* - * EBSA110 idling methodology: - * - * We can not execute the "wait for interrupt" instruction since that - * will stop our MCLK signal (which provides the clock for the glue - * logic, and therefore the timer interrupt). - * - * Instead, we spin, polling the IRQ_STAT register for the occurrence - * of any interrupt with core clock down to the memory clock. - */ -static inline void arch_idle(void) -{ - const char *irq_stat = (char *)0xff000000; - - /* disable clock switching */ - asm volatile ("mcr p15, 0, ip, c15, c2, 2" : : : "cc"); - - /* wait for an interrupt to occur */ - while (!*irq_stat); - - /* enable clock switching */ - asm volatile ("mcr p15, 0, ip, c15, c1, 2" : : : "cc"); -} - -#endif |