[PATCH 00/11] pinctrl: scmi: fixes and GPIO function support

[Clément Le Goffic]

Five fixes: the drive strength went out in milliamperes, the schmitt
trigger enable was mapped to the input buffer, the settings Linux
carries without argument went out as disabled, a setting the platform
reports off read as set, and the protocol layer read past a
PINCTRL_LIST_ASSOCIATIONS reply larger than its receive buffer.

Then GPIO function support: report the pin-only and GPIO attributes of
a function, give pin-only functions no groups, mark the GPIO functions,
and select the GPIO function of a pin on a GPIO request.

Tested on R-Car X5H with a v6.18 backport that needed adapting, all but
the schmitt mapping, which the platform does not implement. An LLM was
used to review the patches and to set up the tests.

---
Clément Le Goffic (11):
      pinctrl: scmi: send the drive strength in microamperes
      pinctrl: scmi: map the schmitt trigger enable to its SCMI type
      pinctrl: scmi: send the settings without argument as enabled
      pinctrl: scmi: report an off setting as not set
      firmware: arm_scmi: stop reading past PINCTRL_LIST_ASSOCIATIONS replies
      firmware: arm_scmi: report the pin-only and GPIO flags of functions
      pinctrl: scmi: give no groups to pin-only functions
      pinctrl: scmi: mark the GPIO functions
      pinctrl: scmi: report whether a function is GPIO
      firmware: arm_scmi: add an operation to set the function of a single pin
      pinctrl: scmi: select the GPIO function on GPIO requests

 drivers/firmware/arm_scmi/pinctrl.c |  62 +++++++++++--
 drivers/pinctrl/pinctrl-scmi.c      | 170 +++++++++++++++++++++++++++++++++---
 include/linux/scmi_protocol.h       |   9 +-
 3 files changed, 222 insertions(+), 19 deletions(-)
---
base-commit: a39c950806213f6861d00f90729acaaa21f2d95a
base-tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
change-id: 20261030-clegoffic-pinctrl-scmi-gpio-48cfe014bb11

Best regards,
--  
Clément Le Goffic <clegoffic at baylibre.com>