From patchwork Wed Feb 28 11:27:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Th=C3=A9o_Lebrun?= X-Patchwork-Id: 13575211 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 411CD12E1FD; Wed, 28 Feb 2024 11:28:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709119701; cv=none; b=FTwS0rbrXvE4rtJnLYaQgLTXZmMIIlP/Jo/9C4pbWjBFDjwcxuNZ71R+45BuA1DQmcfXWcBj2Q99mGQKKFzZIcwU4Q28K+hJ37mHj8DW1bau4MztsO7DiK1P7Tb0jhVt3Mq1MONYgn0XkziEewcLtITejYamwpvHdUXixhETqU0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709119701; c=relaxed/simple; bh=4aOopf4jXtqDRDW3FIuhQ4/nRYsU/hj/5V3KCzXokSY=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=Ui63O6YfuMHcMQ0H57ErpTEoVP0GcnW0kFzAY84Y7UVUkzcsZ0qKs3R5b0vzDuKHnl0LVNG6A/cQjmWzKyLtMswwB5qgA2m2Dc4HiKfXQPfxzDHSHXqD/HyiC9r+OYq1kpt5B/TNnXci4yR3MLLLoHm1k9NkkYpH41DnwGGeaxg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=WVCfrTLG; arc=none smtp.client-ip=217.70.183.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="WVCfrTLG" Received: by mail.gandi.net (Postfix) with ESMTPSA id 6A0EF1BF213; Wed, 28 Feb 2024 11:28:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1709119690; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=VtE8ccdMBx2A8EhTVDOTFlKlJ4eQpPULg5/PMLwosXM=; b=WVCfrTLGmYi4GhNKJ4qT5hcVa3heEJca6ADyK1rjR6iMcCK9m+R9eXxoNbNxAWQfTq0y7c 3oAaRclaLppRM99Fo0jAL+h2v9v1p3MmJrGh9n1qyl0qEbyLYwa6zYrPabSaEqCXgWg3eP FxbS3gTETuKaj5DcOUqhMlnrlttlxH3wLKeD30gfhUaN/hGKh4Q/HnfShdl6yIobuK8EfH v0FmKOaKfToGfxloywYFapyy035wA+gL8IwNDG9vtuhXwiiWCTizB7nRsc+1jY+IFpN59l sL4WhNsKOV29g22nuO97IceD8m+Y3dHordn3RmXUAbzugl8MMG3E8/G4lAQrZg== From: =?utf-8?q?Th=C3=A9o_Lebrun?= Subject: [PATCH v2 00/30] Rework Nomadik GPIO to add Mobileye EyeQ5 support Date: Wed, 28 Feb 2024 12:27:58 +0100 Message-Id: <20240228-mbly-gpio-v2-0-3ba757474006@bootlin.com> Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAL8Y32UC/03MQQ6DIBCF4auYWZcGBhtJV71H40Io6CQKBgypM dy96KqLWfyTl++AZCPZBM/mgGgzJQq+Bt4aMNPgR8voUxuQoxT12KLnnY0rBTZI/uiENRKVhLp fo3X0vax3X3uitIW4X3QW5/dUWo6i/VOyYJw5pQw3xskO9UuHsM3k7yYs0JdSfuaBJNWkAAAA To: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Thomas Bogendoerfer Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, Gregory CLEMENT , Vladimir Kondratiev , Thomas Petazzoni , Tawfik Bayouk , =?utf-8?q?Th=C3=A9o_Lebrun?= , Krzysztof Kozlowski , Stephen Warren , Jonathan Corbet , linux-doc@vger.kernel.org X-Mailer: b4 0.13.0 X-GND-Sasl: theo.lebrun@bootlin.com Hi, This patch series reworks the Nomadik GPIO driver to bring it up to date to current kernel standards. We then add Mobileye EyeQ5 support that uses the same IP block but with limited functionality. We also add features required by our newly supported platform: - Dynamic GPIO ID allocation; - Make clock optional; - Shared IRQ (usecase: EyeQ5 has two banks using the same IRQ); - Handle variadic GPIO counts (usecase: EyeQ5 has <32 GPIOs per bank); - Grab optional reset at probe (usecase: EyeQ5 has a shared GPIO reset). This GPIO platform driver was previously declared & registered inside drivers/pinctrl/nomadik/pinctrl-nomadik.c, side-by-side with the pinctrl driver. Both are tightly integrated, mostly for muxing reasons. Now that gpio-nomadik is used for another platform, we loosen the relationship. The behavior should not change on already supported hardware but I do not have Nomadik hardware to test for that. We have some dependencies. Those are: - The base platform support series from Grégory [0], present in mips-next. It in turns depends on [1], also in mips-next. This relates to the last four patches (27 thru 30), ie defconfig and devicetree. - The OLB syscon support series [2]. It provides reset and pinctrl nodes inside the devicetree. This relates to the last two patches (29 and 30), ie resets and gpio-ranges DT props. GPIO works fine if patches 29 and 30 are dropped and bootloader deasserts the reset (it does). This has been tested on the EyeQ5 hardware, with the two parent series applied. It also works fine without the OLB syscon series when our last two patches are removed. It has been built on both Arm defconfigs that rely on pinctrl-nomadik: nhk8815_defconfig and u8500_defconfig. I don't have any Nomadik hardware to test though. Have a nice day, Théo [0]: https://lore.kernel.org/lkml/20240216174227.409400-1-gregory.clement@bootlin.com/ [1]: https://lore.kernel.org/linux-mips/20240209-regname-v1-0-2125efa016ef@flygoat.com/ [2]: https://lore.kernel.org/lkml/20240227-mbly-clk-v8-0-c57fbda7664a@bootlin.com/ To: Linus Walleij To: Bartosz Golaszewski To: Rob Herring To: Krzysztof Kozlowski To: Conor Dooley To: Philipp Zabel To: Thomas Bogendoerfer Cc: linux-gpio@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mips@vger.kernel.org Cc: Gregory CLEMENT Cc: Vladimir Kondratiev Cc: Thomas Petazzoni Cc: Tawfik Bayouk Signed-off-by: Théo Lebrun Changes in v2: - dt-bindings: add description to gpio-bank. - dt-bindings: fix disabling of st,supports-sleepmode prop with st,supports-sleepmode compatible. - gpio: move "fix offset bug in nmk_pmx_set()" to the start of the series and add a Fixes trailer. The patch changed because of that. - pinctrl: allow building PINCTRL_NOMADIK and co with COMPILE_TEST. - gpio: in "support shared GPIO IRQs" remove fake raw lock and use generic_handle_domain_irq_safe() helper. - gpio: remove OF API calls. of_property_read_*() => device_property_read_*() of_find_device_by_node() => bus_find_device_by_of_node() - gpio: use device_is_compatible() rather than match data to detect for Mobileye SoC. If GPIO device is populated by pinctrl match data is unavailable. - gpio: rename quirk_mbly field to is_mobileye_soc. - gpio: add comment about unbalanced reset_control_deassert() and disable bind sysfs attributes. - gpio: use devm_platform_ioremap_resource() helper. - gpio: use devres version of clk_get*() in case of probe failure. - gpio: add missing include. - Documentation: gpio: replace outdated comment of using a fake spin lock and mention the generic_handle_irq_safe() helper. - gpio: in "follow whitespace kernel coding conventions", add missing newline before headers. - Take 6 Reviewed-By Linus, 1 Reviewed-by and 1 Acked-by Krzysztof. - Link to v1: https://lore.kernel.org/r/20240214-mbly-gpio-v1-0-f88c0ccf372b@bootlin.com --- Théo Lebrun (30): dt-bindings: gpio: nomadik: convert into yaml format dt-bindings: gpio: nomadik: add optional ngpios property dt-bindings: gpio: nomadik: add mobileye,eyeq5-gpio compatible dt-bindings: gpio: nomadik: add optional reset property gpio: nomadik: fix offset bug in nmk_pmx_set() gpio: nomadik: extract GPIO platform driver from drivers/pinctrl/nomadik/ pinctrl: nomadik: Kconfig: allow building with COMPILE_TEST pinctrl: nomadik: fix build warning (-Wformat) pinctrl: nomadik: fix build warning (-Wpointer-to-int-cast) pinctrl: nomadik: minimise indentation in probe pinctrl: nomadik: follow type-system kernel coding conventions pinctrl: nomadik: follow whitespace kernel coding conventions pinctrl: nomadik: follow conditional kernel coding conventions gpio: nomadik: add #include gpio: nomadik: replace of_find_*() by bus_find_device_by_of_node() gpio: nomadik: replace of_property_read_*() by device_property_read_*() gpio: nomadik: use devm_platform_ioremap_resource() helper gpio: nomadik: use devres version of clk_get*() gpio: nomadik: request dynamic ID allocation gpio: nomadik: make clock optional gpio: nomadik: change driver name from gpio to gpio-nomadik gpio: nomadik: support shared GPIO IRQs gpio: nomadik: handle variadic GPIO count gpio: nomadik: support mobileye,eyeq5-gpio gpio: nomadik: grab optional reset control and deassert it at probe Documentation: gpio: mention generic_handle_irq_safe() MIPS: eyeq5_defconfig: enable GPIO by default MIPS: mobileye: eyeq5: add two GPIO bank nodes MIPS: mobileye: eyeq5: add resets to GPIO banks MIPS: mobileye: eyeq5: map GPIOs to pins using gpio-ranges .../devicetree/bindings/gpio/gpio-nmk.txt | 31 - .../devicetree/bindings/gpio/st,nomadik-gpio.yaml | 95 +++ Documentation/driver-api/gpio/driver.rst | 11 +- MAINTAINERS | 2 + arch/mips/boot/dts/mobileye/eyeq5.dtsi | 30 + arch/mips/configs/eyeq5_defconfig | 2 + drivers/gpio/Kconfig | 13 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-nomadik.c | 722 ++++++++++++++++ drivers/pinctrl/nomadik/Kconfig | 7 +- drivers/pinctrl/nomadik/pinctrl-nomadik-db8500.c | 3 +- drivers/pinctrl/nomadik/pinctrl-nomadik-stn8815.c | 3 +- drivers/pinctrl/nomadik/pinctrl-nomadik.c | 939 +++------------------ .../linux/gpio/gpio-nomadik.h | 123 ++- 14 files changed, 1117 insertions(+), 865 deletions(-) --- base-commit: 3ebad8a9638d4c667e8925968806a82e1b9025ea change-id: 20231023-mbly-gpio-a30571ec3283 Best regards,