I am porting an AT91RM9200 driver developed in Linux 2.4.27 to 2.6.15
I note that hw header files
1)changed names AT91RM9200.h -> at91rm9200.h

2)all structure declarations c/o Atmel Rousset were completely removed
e.g in AT91RM9200.h the following declaration
#ifndef __ASSEMBLY__
typedef volatile unsigned int AT91RM_REG;
#endif
was removed in at91rm9200.h

2)macro definitions for hw register bits changed !
e.g
#define AT91C_ST_WDRST (0x1 << 0) in AT91RM9200_SYS.H
became ( a 'C" is missing...)
#define AT91_ST_WDRST (0x1 << 0) in at91rm9200_sys.h

3)macro definitions for hw registers bits have now a different distribution'
in the different header files...

As my driver accessed directly the hw registers, according to ATMEL
structures and macros, I am now very puzzled...

Which is the reason for this troublesome header files rearrangement ?
Any hint for a simple porting of AT91RM9200 driver projects ?
Thank you for your attention.