David Vrabel [off-list ref] :
[...]

quoted

   ipg: replace #define with enum
   
   Added some underscores to improve readability.
   
   Signed-off-by: Francois Romieu [off-list ref]

Nack.  Register names in code should match those used in the 
documentation (even if they are a bit unreadable).  Though I will 
conceed that the available datasheet doesn't actually describe the 
majority of the registers.

We will have to agree to disagree. Feel free to open a different
branch.

-- 
Ueimor