[RFC v1 0/4] generic pinmux dt_node_to_map implementation

[Conor Dooley]

From: Conor Dooley <conor.dooley at microchip.com>

Hey Linus,

Whipped this up last week, at to a first glance it appears to work,
although the spacemit platform I've used to implement this has very
limited in-tree use of pinctrl so it is hard to be sure.

What I don't love though is how similar the functions
pinctrl_generic_pins_function_dt_node_to_map() and
pinctrl_generic_pinmux_dt_node_to_map() are - essentially identical
other than which function they in turn call.

Basically, I wanna know if you think that that is acceptable, or if
you'd rather see something that's totally generic between the two
and figures out which foo_dt_subnode_to_map() function to call*,
or convert pinctrl_generic_pins_function_dt_node_to_map() and
pinctrl_generic_pinmux_dt_node_to_map() to wrappers that pass a function
pointer of the appropriate foo_dt_subnode_to_map() to a shared node
parsing function, or some third option that I have not considered.

If you try to apply this, it's on top of Frank's mux series. It's also
here if any of the spacemit-ters want to look at what I did to their
driver:
https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/log/?h=spacemit-pinctrl

None of the patches have real commit messages due to this being RFC :)

Cheers,
Conor.

* pinmux/pins + functions/groups + functions I think are the only
  really valid combinations here, so it wouldn't be too difficult to
  arrange that logic.

CC: Linus Walleij <linusw at kernel.org>
CC: Yixun Lan <dlan at kernel.org>
CC: Conor Dooley <conor.dooley at microchip.com>
CC: Troy Mitchell <troy.mitchell at linux.spacemit.com>
CC: linux-gpio at vger.kernel.org
CC: linux-kernel at vger.kernel.org
CC: linux-riscv at lists.infradead.org
CC: spacemit at lists.linux.dev

Conor Dooley (4):
  pinctrl: generic: change signature of pinctrl_generic_to_map() to pass
    void data
  pinctrl: add new generic groups/function creation function for pinmux
  pinctrl: spacemit: delete check_power()
  pinctrl: spacemit: move over to generic pinmux dt_node_to_map
    implementation

 drivers/pinctrl/pinconf.h             |  20 +++-
 drivers/pinctrl/pinctrl-generic.c     | 139 +++++++++++++++++++++++++-
 drivers/pinctrl/spacemit/pinctrl-k1.c |  70 +++----------
 3 files changed, 164 insertions(+), 65 deletions(-)

-- 
2.53.0