On Wed, Mar 21, 2012 at 12:41:41PM -0700, Saravana Kannan wrote:

The meaning of clk_enable/disable has been changed and they won't work  
without calling clk_prepare/unprepare. So, these are definitely new  
APIs. If it weren't new APIs, then none of the general drivers would  
need to change.

Yes and no.  I disagree that the meaning of clk_enable/disable() has
changed.  It hasn't.  What has changed is the preconditions for calling
those functions, and necessarily so in the interest of being able to
unify the different implementations.