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[ARM] pxa: introduce cpu_is_pxaXXX macros 

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-05-15 10:26:49 +01:00 committed by Russell King
parent 7a2b94bc39
commit b23170c01f
2 changed files with 38 additions and 4 deletions
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6
arch/arm/mach-pxa/generic.c
View File

@ -448,16 +448,14 @@ static struct platform_device *devices[] __initdata = {
static int __init pxa_init(void)
{
int cpuid, ret;
int ret;
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
if (ret)
return ret;
/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
cpuid = read_cpuid(CPUID_ID);
if (((cpuid >> 4) & 0xfff) == 0x2d0 ||
((cpuid >> 4) & 0xfff) == 0x290)
if (cpu_is_pxa25x())
ret = platform_device_register(&hwuart_device);
return ret;

36
include/asm-arm/arch-pxa/hardware.h
View File

@ -62,6 +62,42 @@
#ifndef __ASSEMBLY__
#define __cpu_is_pxa21x(id) \
({ \
unsigned int _id = (id) >> 4 & 0xf3f; \
_id == 0x212; \
})
#define __cpu_is_pxa25x(id) \
({ \
unsigned int _id = (id) >> 4 & 0xfff; \
_id == 0x2d0 || _id == 0x290; \
})
#define __cpu_is_pxa27x(id) \
({ \
unsigned int _id = (id) >> 4 & 0xfff; \
_id == 0x411; \
})
#define cpu_is_pxa21x() \
({ \
unsigned int id = read_cpuid(CPUID_ID); \
__cpu_is_pxa21x(id); \
})
#define cpu_is_pxa25x() \
({ \
unsigned int id = read_cpuid(CPUID_ID); \
__cpu_is_pxa25x(id); \
})
#define cpu_is_pxa27x() \
({ \
unsigned int id = read_cpuid(CPUID_ID); \
__cpu_is_pxa27x(id); \
})
/*
* Handy routine to set GPIO alternate functions
*/