[PATCH] mfd: qcom-pm8xxx: Clean up PM8XXX namespace

On Wed, 26 Oct 2016, Linus Walleij wrote:

The Kconfig and file naming for the PM8xxx driver is totally
confusing:

- Kconfig options MFD_PM8XXX and MFD_PM8921_CORE, some in-kernel
  users depending on or selecting either at random.
- A driver file named pm8921-core.c even if it is indeed
  used by the whole PM8xxx family of chips.
- An irqchip named pm8xxx since it was (I guess) realized that
  the driver was generic for all pm8xxx PMICs.

As I may want to add support for PM8901 this is starting to get
really messy. Fix this situation by:

- Remove the MFD_PM8921_CORE symbol and rely solely on MFD_PM8XXX
  and convert all users, including LEDs Kconfig and ARM defconfigs
  for qcom and multi_v7 to use that single symbol.
- Renaming the driver to qcom-pm8xxx.c to fit along the two
  other qcom* prefixed drivers.
- Rename functions withing the driver from 8921 to 8xxx to
  indicate it is generic.
- Just drop the =m config from the pxa_defconfig, I have no clue
  why it is even there, it is not a Qualcomm platform. (Possibly
  older Kconfig noise from saveconfig.)

Cc: Stephen Boyd <redacted>
Cc: Bjorn Andersson <redacted>
Cc: Neil Armstrong <redacted>
Cc: Abhijeet Dharmapurikar <redacted>
Signed-off-by: Linus Walleij <redacted>
---
I do NOT think it is a good idea to try to split this commit up,
I rather prefer that Lee simply merge it into MFD.

The reason is that files like qcom_defconfig already contain both
the right symbols, but the MFD_PM8921_CORE symbol cannot be removed
until this rename has happened, whereas multi_v7_defconfig needs
it added etc, and this is just a clean nice cut.

Jacek, ARM SoC person: please ACK this patch to get merged into
MFD.
---
 arch/arm/configs/multi_v7_defconfig          |  2 +-
 arch/arm/configs/pxa_defconfig               |  1 -
 arch/arm/configs/qcom_defconfig              |  1 -
 drivers/leds/Kconfig                         |  2 +-
 drivers/mfd/Kconfig                          | 14 ++++------
 drivers/mfd/Makefile                         |  2 +-
 drivers/mfd/{pm8921-core.c => qcom-pm8xxx.c} | 42 ++++++++++++++--------------

For my own reference:
  Acked-for-MFD-by: Lee Jones [off-list ref]

 7 files changed, 29 insertions(+), 35 deletions(-)
 rename drivers/mfd/{pm8921-core.c => qcom-pm8xxx.c} (92%)

How many more Acks do we need?

[...]

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
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