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Use common cpu_is_xxx() macros on AT91 and AVR32
Several drivers shared between AT91 and AVR32 chips use cpu_is_xxx() to handle CPU-specific differences. Currently, such code needs to be inside #ifdef CONFIG_ARCH_AT91 because the macros don't exist on AVR32. By defining the same macros on both AT91 and AVR32, these #ifdefs can be eliminated. Since the macros will evaluate to a constant value for CPUs that aren't supported by the current architecture, any code that is only needed on AT91 will be optimized away on AVR32 and vice versa. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: David Brownell <david-b@pacbell.net> Acked-by: Andrew Victor <andrew@sanpeople.com> Cc: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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2 changed files with 39 additions and 0 deletions
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@ -68,4 +68,10 @@ static inline unsigned long at91_arch_identify(void)
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#define cpu_is_at91sam9263() (0)
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#endif
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/*
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* Since this is ARM, we will never run on any AVR32 CPU. But these
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* definitions may reduce clutter in common drivers.
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*/
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#define cpu_is_at32ap7000() (0)
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#endif
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33
include/asm-avr32/arch-at32ap/cpu.h
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33
include/asm-avr32/arch-at32ap/cpu.h
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@ -0,0 +1,33 @@
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/*
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* AVR32 and (fake) AT91 CPU identification
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*
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* Copyright (C) 2007 Atmel Corporation
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_CPU_H
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#define __ASM_ARCH_CPU_H
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/*
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* Only AT32AP7000 is defined for now. We can identify the specific
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* chip at runtime, but I'm not sure if it's really worth it.
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*/
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#ifdef CONFIG_CPU_AT32AP7000
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# define cpu_is_at32ap7000() (1)
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#else
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# define cpu_is_at32ap7000() (0)
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#endif
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/*
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* Since this is AVR32, we will never run on any AT91 CPU. But these
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* definitions may reduce clutter in common drivers.
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*/
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#define cpu_is_at91rm9200() (0)
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#define cpu_is_at91sam9xe() (0)
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#define cpu_is_at91sam9260() (0)
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#define cpu_is_at91sam9261() (0)
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#define cpu_is_at91sam9263() (0)
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#endif /* __ASM_ARCH_CPU_H */
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