[PATCH v5 0/6] gpio: pca953x: code refactoring

[Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>]

I'm working on converting the pca953x driver to using regmap, but since
it's not a trivial task I figured I'd post a couple refactoring patches
I did so far for 4.9.

The first patch just fixes a couple coding style issues. The second
removes a couple unnecessary switches. Last three refactor the
read/write_regs functions to avoid if-elses by using function pointers
to smaller, specialized routines.

Tested with pca9534 and pca9535 chips.

v1 -> v2:
- constified the offset structures in patch 2/5

v2 -> v3:
- modified the order of the patches so that minor coding style fixes
  no longer create noise for the later changes
- moved the **_write_regs_16() assignments to where other variants
  are assigned

v3 -> v4:
- minor style fixes

v4 -> v5:
- added a patch making the register offset names consistent
- bunch of style changes in patch 5/6
- renamed the structure containing the register offsets

Bartosz Golaszewski (6):
  gpio: pca953x: code shrink
  gpio: pca953x: refactor pca953x_write_regs()
  gpio: pca953x: refactor pca953x_read_regs()
  gpio: pca953x: remove an unused variable
  gpio: pca953x: coding style fixes
  gpio: pca953x: make the define names consistent

 drivers/gpio/gpio-pca953x.c | 284 ++++++++++++++++++++++----------------------
 1 file changed, 143 insertions(+), 141 deletions(-)

-- 
2.7.4

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