On Mon, May 07, 2012 at 08:15:13PM +0530, Laxman Dewangan wrote:

> Actually I saw the multiple driver which uses
> set_bits()/clear_bits() and thought that this is good way of writing
> clean code and so developed multiple driver surrounding these apis.
> Now seems it is easy for me to use these apis. May be it is my
> personal taste.

It's a taste thing, a lot of those drivers are doing this because they
cloned the wm8350 driver (or something else which was based off the
wm8350 driver - it was the first of these).