ARM: OMAP2: Use omap_rev() instead of system_rev

system_rev is meant for board revision, this patch changes
all relevant instances to use the new omap_rev() function
liberating system_rev to be used with ATAG_REVISION as it
has been designed.

Signed-off-by: Lauri Leukkunen <lauri.leukkunen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

3 files changed, 10 insertions, 7 deletions

diff --git a/arch/arm/plat-omap/include/mach/board-apollon.h b/arch/arm/plat-omap/include/mach/board-apollon.h
index 731c858cf3fe..61bd5e8f09b1 100644
--- a/arch/arm/plat-omap/include/mach/board-apollon.h
+++ b/arch/arm/plat-omap/include/mach/board-apollon.h
@@ -29,12 +29,14 @@
 #ifndef __ASM_ARCH_OMAP_APOLLON_H
 #define __ASM_ARCH_OMAP_APOLLON_H
 
+#include <mach/cpu.h>
+
 extern void apollon_mmc_init(void);
 
 static inline int apollon_plus(void)
 {
         /* The apollon plus has IDCODE revision 5 */
-        return system_rev & 0xc0;
+        return omap_rev() & 0xc0;
 }
 
 /* Placeholder for APOLLON specific defines */
diff --git a/arch/arm/plat-omap/include/mach/cpu.h b/arch/arm/plat-omap/include/mach/cpu.h
index 4325bbc97477..b2062f1175de 100644
--- a/arch/arm/plat-omap/include/mach/cpu.h
+++ b/arch/arm/plat-omap/include/mach/cpu.h
@@ -34,12 +34,12 @@ struct omap_chip_id {
 #define OMAP_CHIP_INIT(x)       { .oc = x }
 
 /*
- * system_rev bits:
+ * omap_rev bits:
  * CPU id bits  (0730, 1510, 1710, 2422...)     [31:16]
  * CPU revision (See _REV_ defined in cpu.h)    [15:08]
  * CPU class bits (15xx, 16xx, 24xx, 34xx...)   [07:00]
  */
-extern unsigned int system_rev;
+unsigned int omap_rev(void);
 
 /*
  * Test if multicore OMAP support is needed
@@ -113,7 +113,7 @@ extern unsigned int system_rev;
  * cpu_is_omap243x():   True for OMAP2430
  * cpu_is_omap343x():   True for OMAP3430
  */
-#define GET_OMAP_CLASS  (system_rev & 0xff)
+#define GET_OMAP_CLASS  (omap_rev() & 0xff)
 
 #define IS_OMAP_CLASS(class, id)                        \
 static inline int is_omap ##class (void)                \
@@ -121,7 +121,7 @@ static inline int is_omap ##class (void)		\
         return (GET_OMAP_CLASS == (id)) ? 1 : 0;        \
 }
 
-#define GET_OMAP_SUBCLASS       ((system_rev >> 20) & 0x0fff)
+#define GET_OMAP_SUBCLASS       ((omap_rev() >> 20) & 0x0fff)
 
 #define IS_OMAP_SUBCLASS(subclass, id)                  \
 static inline int is_omap ##subclass (void)             \
@@ -231,7 +231,7 @@ IS_OMAP_SUBCLASS(343x, 0x343)
  * cpu_is_omap2430():   True for OMAP2430
  * cpu_is_omap3430():   True for OMAP3430
  */
-#define GET_OMAP_TYPE   ((system_rev >> 16) & 0xffff)
+#define GET_OMAP_TYPE   ((omap_rev() >> 16) & 0xffff)
 
 #define IS_OMAP_TYPE(type, id)                          \
 static inline int is_omap ##type (void)                 \
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index dcd9d16da2e9..be7bcaf2b832 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -24,6 +24,7 @@
 
 #include <mach/sram.h>
 #include <mach/board.h>
+#include <mach/cpu.h>
 
 #include <mach/control.h>
 
@@ -87,7 +88,7 @@ static int is_sram_locked(void)
         int type = 0;
 
         if (cpu_is_omap242x())
-                type = system_rev & OMAP2_DEVICETYPE_MASK;
+                type = omap_rev() & OMAP2_DEVICETYPE_MASK;
 
         if (type == GP_DEVICE) {
                 /* RAMFW: R/W access to all initiators for all qualifier sets */