From patchwork Wed Aug 23 16:10:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 13362807 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 136A1EE49A0 for ; Wed, 23 Aug 2023 16:10:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) id CD095C433C7; Wed, 23 Aug 2023 16:10:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66666C433C8; Wed, 23 Aug 2023 16:10:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692807016; bh=xq73xdRnCcL0bnQPwVu9tQIeHuXpmZ7FdGKm2MiXfj0=; h=From:List-Id:To:Cc:Subject:Date:From; b=H6qtqiCSdkAd6+wLsmgT1Izh81F6nemSOdLM+EQgX/fmNza33eX7pzto2USvj7DdC sNGWA1Hjp1IlHVJPQpO99Nm73CxJoKfRhCO2KjMZIwS51x0ZBa37owi9ctCRY1uWoU U4LYYkRAOKeka0lM9xXiS4TGmpZUYDLHkkhlJ7bFWWnnuhTGSHjq3WUqCpiyElZmho nweHiYytO3iF4ocGYC/79FoQ/feogzzcK5bLPo0cAVqWYw+aMAET3gw2nlFSfDTMml NWwgjqsr6s7LA5NQyPlngKZWzmd4ie1etvq7hKg+tfBwiP1G4ii5yyr5w7SO4c92fQ mnyAiysNzuvYQ== From: =?utf-8?q?Marek_Beh=C3=BAn?= List-Id: To: Gregory CLEMENT , Arnd Bergmann , soc@kernel.org, arm@kernel.org, linux-gpio@vger.kernel.org Cc: =?utf-8?q?Marek_Beh=C3=BAn?= Subject: [PATCH 0/4] Turris Omnia MCU driver Date: Wed, 23 Aug 2023 18:10:08 +0200 Message-ID: <20230823161012.6986-1-kabel@kernel.org> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Hello Arnd, Gregory, this series adds support for the MCU provided features on Turris Omnia: - board poweroff and wakeup (via rtcwake), - MCU watchdog, - GPIOs and interrupts. The first two parts are simple enough. The GPIOs and interrupts part is a little bit more complicated because boards with newer MCU firmware support new interrupt reading API, but I wanted to also add support for older MCU firmwares, for users who do not use our system and won't get automatic upgrade to newer version. There are 4 patches: - 1st adds device-tree binding, - 2nd adds the driver proper, - 3rd and 4th add nodes to Omnia's device tree. The driver is added to the drivers/platform/cznic directory. Gregory, could you give ack/review for the device-tree patches so that they can be merged with the series if everything else is ok? Marek Marek Behún (4): dt-bindings: arm: add cznic,turris-omnia-mcu binding platform/cznic: Add support for Turris Omnia MCU ARM: dts: turris-omnia: Add MCU system-controller node ARM: dts: turris-omnia: Add GPIO key node for front button .../sysfs-bus-i2c-devices-turris-omnia-mcu | 77 ++ .../bindings/arm/cznic,turris-omnia-mcu.yaml | 72 ++ MAINTAINERS | 4 + .../dts/marvell/armada-385-turris-omnia.dts | 37 +- drivers/platform/Kconfig | 2 + drivers/platform/Makefile | 1 + drivers/platform/cznic/Kconfig | 48 + drivers/platform/cznic/Makefile | 7 + .../platform/cznic/turris-omnia-mcu-base.c | 275 +++++ .../platform/cznic/turris-omnia-mcu-gpio.c | 967 ++++++++++++++++++ .../cznic/turris-omnia-mcu-sys-off-wakeup.c | 245 +++++ .../cznic/turris-omnia-mcu-watchdog.c | 126 +++ drivers/platform/cznic/turris-omnia-mcu.h | 161 +++ include/linux/turris-omnia-mcu-interface.h | 194 ++++ 14 files changed, 2215 insertions(+), 1 deletion(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu create mode 100644 Documentation/devicetree/bindings/arm/cznic,turris-omnia-mcu.yaml create mode 100644 drivers/platform/cznic/Kconfig create mode 100644 drivers/platform/cznic/Makefile create mode 100644 drivers/platform/cznic/turris-omnia-mcu-base.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-gpio.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-sys-off-wakeup.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu-watchdog.c create mode 100644 drivers/platform/cznic/turris-omnia-mcu.h create mode 100644 include/linux/turris-omnia-mcu-interface.h