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| author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2007-05-09 02:33:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:50 -0700 |
| commit | e7498281d3caec1141d7542ec494c4e4a1d404c9 (patch) | |
| tree | fcf4d2d82cb52211a4a1c7f7c6965d4996b99ac4 /include/asm-avr32 | |
| parent | 31143d5d515ece617ffccb7df5ff75e4d1dfa120 (diff) | |
| download | linux-e7498281d3caec1141d7542ec494c4e4a1d404c9.tar.gz linux-e7498281d3caec1141d7542ec494c4e4a1d404c9.tar.bz2 linux-e7498281d3caec1141d7542ec494c4e4a1d404c9.zip | |
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>
Diffstat (limited to 'include/asm-avr32')
| -rw-r--r-- | include/asm-avr32/arch-at32ap/cpu.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/asm-avr32/arch-at32ap/cpu.h b/include/asm-avr32/arch-at32ap/cpu.h new file mode 100644 index 000000000000..2bdc5bd6f793 --- /dev/null +++ b/include/asm-avr32/arch-at32ap/cpu.h @@ -0,0 +1,33 @@ +/* + * AVR32 and (fake) AT91 CPU identification + * + * Copyright (C) 2007 Atmel Corporation + * + * 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_CPU_H +#define __ASM_ARCH_CPU_H + +/* + * Only AT32AP7000 is defined for now. We can identify the specific + * chip at runtime, but I'm not sure if it's really worth it. + */ +#ifdef CONFIG_CPU_AT32AP7000 +# define cpu_is_at32ap7000() (1) +#else +# define cpu_is_at32ap7000() (0) +#endif + +/* + * Since this is AVR32, we will never run on any AT91 CPU. But these + * definitions may reduce clutter in common drivers. + */ +#define cpu_is_at91rm9200() (0) +#define cpu_is_at91sam9xe() (0) +#define cpu_is_at91sam9260() (0) +#define cpu_is_at91sam9261() (0) +#define cpu_is_at91sam9263() (0) + +#endif /* __ASM_ARCH_CPU_H */ |