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authorVitaly Bordug <vbordug@ru.mvista.com>2006-09-21 22:37:58 +0400
committerVitaly Bordug <vbordug@ru.mvista.com>2006-09-21 22:37:58 +0400
commitfc8e50e349aa722d9f97ed9ba30e324ede8fa408 (patch)
tree8ed14947a5c448f697240006efab77aac60281b7 /include/asm-powerpc
parent902f392d011d0a781ea4695c464345faa6664540 (diff)
POWERPC: Get rid of remapping the whole immr
The stuff below cleans up the code attempting to remap the whole cpm2_immr early, as well as places happily assuming that fact. This is more like the 2.4 legacy stuff, and is at least confusing and unclear now. To keep the world comfortable, a new mechanism is introduced: before accessing specific immr register/register set, one needs to map it, using cpm2_map(<reg>), for instance, access to CPM command register will look like volatile cpm_cpm2_t *cp = cpm2_map(im_cpm); keeping the code clear, yet without "already defined somewhere" cpm2_immr. So far, unmapping code is not implemented, but it's not a big deal to add it, if the whole idea makes sense. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/fs_pd.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-powerpc/fs_pd.h b/include/asm-powerpc/fs_pd.h
index d530f68b4ee..3d0e819d37f 100644
--- a/include/asm-powerpc/fs_pd.h
+++ b/include/asm-powerpc/fs_pd.h
@@ -11,6 +11,7 @@
#ifndef FS_PD_H
#define FS_PD_H
+#include <asm/cpm2.h>
#include <sysdev/fsl_soc.h>
#include <asm/time.h>
@@ -24,4 +25,21 @@ static inline int uart_clock(void)
return ppc_proc_freq;
}
+#define cpm2_map(member) \
+({ \
+ u32 offset = offsetof(cpm2_map_t, member); \
+ void *addr = ioremap (CPM_MAP_ADDR + offset, \
+ sizeof( ((cpm2_map_t*)0)->member)); \
+ addr; \
+})
+
+#define cpm2_map_size(member, size) \
+({ \
+ u32 offset = offsetof(cpm2_map_t, member); \
+ void *addr = ioremap (CPM_MAP_ADDR + offset, size); \
+ addr; \
+})
+
+#define cpm2_unmap(addr) iounmap(addr)
+
#endif