[ARM] pxa: introduce cpu_is_pxaXXX macros

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 38 insertions, 4 deletions

diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 64b08b744f9f..147b7c40d9f9 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -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;
diff --git a/include/asm-arm/arch-pxa/hardware.h b/include/asm-arm/arch-pxa/hardware.h
index e2bdc2fbede1..386121746417 100644
--- a/include/asm-arm/arch-pxa/hardware.h
+++ b/include/asm-arm/arch-pxa/hardware.h
@@ -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
  */