linux-kernel - [PATCH 0/4] rockchip: support configuring pins as input

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Date:   Mon, 28 Mar 2022 01:50:01 +0100
From:   Caleb Connolly <kc@...tmarketos.org>
To:     Caleb Connolly <kc@...tmarketos.org>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, martijn@...xit.nl,
        Arnaud Ferraris <arnaud.ferraris@...labora.com>
Subject: [PATCH 0/4] rockchip: support configuring pins as input

Add support for configuring pins as input to the rockchip pinctrl
driver. This is required for example for devices which use non-standard
configurations for gpio interrupts, specifically for the light/proximity
sensor on the RK3399 powered PinePhone Pro (which will be coming
upstream in a future patch series).

Due to the complicated layout of the RK pinctrl/gpio drivers, some extra
work is required to handle deferring the GPIO configuration. On RK3399
the pinctrl driver always probes before the GPIO controller driver, so
the PIN_CONFIG_OUTPUT and PIN_CONFIG_INPUT_ENABLE params both have to be
deferred, this series also reworks the deferred pin handling to be
generic and support any param rather than only the PIN_CONFIG_OUTPUT
param.

---
Caleb Connolly (4):
  pinctrl/rockchip: support deferring other gpio params
  pinctrl/rockchip: support setting input-enable param
  gpio/rockchip: handle deferring input-enable pinconfs
  arm64: dts: rockchip: rk3399: add an input enable pinconf

 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 16 ++++++
 drivers/gpio/gpio-rockchip.c             | 29 ++++++++---
 drivers/pinctrl/pinctrl-rockchip.c       | 64 +++++++++++++++---------
 drivers/pinctrl/pinctrl-rockchip.h       |  7 ++-
 4 files changed, 81 insertions(+), 35 deletions(-)

-- 
2.35.1