[U-Boot] [PATCH] include/ns16550.h: Unify structure declaration for registers

[Detlev Zundel <dzu@denx.de>]

Detlev Zundel <dzu@denx.de> writes:

> Instead of special casing the different access patterns, use common
> code with light macros sprinkled in to accomodate for the different
> layouts of the register structure.
>
> Note that this also changes the types of the registers for the
> "positively packed (>1)" cases.  As the registers truly are unsigned
> chars, this is surely the Right Thing, but it is a semantic change.
> Note that for this case depending on the endianness on the bus, we may
> see a change of behaviour.
>
> Signed-off-by: Detlev Zundel <dzu@denx.de>
> ---
>  include/ns16550.h |  130 +++++++++++++++--------------------------------------
>  1 files changed, 37 insertions(+), 93 deletions(-)

I forgot to say, this patch depend on the previous cleanup patch sent
earlier today (Rename-common-ns16550-constants-with-UART_-prefix).

Cheers
  Detlev

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