From patchwork Fri May 9 09:14:35 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 889081 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 DCFEB274669; Fri, 9 May 2025 09:14:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746782090; cv=none; b=MWF/8EQgbBhd1W8tlsO3S74dZ5a2prgFGEm5DaqxmtjXWMFvzNoryRA0S1kDJ4fYRslhaEtzYLPzrDLlldoUWnikaoJXNcaO/ybSg1g7VSbWQngQXSpAwm24+irNqNNTbvzY0j8ErS87c+/J0xwqgXu17xDm4fqPU7JSDxHgdAE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746782090; c=relaxed/simple; bh=dk/vOyekPaxUPGQVlP91l7WD880+k0K+cVWxAiOYEDA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IhlSi2EbKSR2hSFZmUIysdZguiuWyFrEKZG2OfNaUH5mT66zHmSUALq151l8VmkO9MS5Fqx5i8DnHz4GcFMOoKOmUj1aU2QrzdmBF1TFqc88nEb7Ykylp8nBU8hXoKk4Ugr6Sm9z1aDUJ02wlqM4WxBkj5Tq8xfRLqjpOGXREAE= 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=S4aNeFKS; arc=none smtp.client-ip=217.70.183.195 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="S4aNeFKS" Received: by mail.gandi.net (Postfix) with ESMTPSA id 41B701FCF4; Fri, 9 May 2025 09:14:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1746782085; 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: in-reply-to:in-reply-to:references:references; bh=QEoiRvlYtbFSAa8oj8odOk/YLCxewSlJ4hvGsB2qEJ8=; b=S4aNeFKSTh1eSdd80YbrDsvJV0vp8EZE+yMSGZnkU1f9dg1SFkn09/DKbLzx7WhiRK0Oqv 58PwB39aAu6iOzWJ+f55KhMpKOlr1yIe7QSUdXQoAjxb3QErvA7Txy2p2X378tr+NAFSyv +tIEF2Wt98Y2TAaCcI3QGp3LG5M62G6CL5x49syiMF0I5tBMJL2eEQJLnBxNteGtFLbecq dT1jRkRt9H/JyYVWemZxgsDsP1S2hXM4pdKBsvOPDI2YMWKbUsoaQ3fc/IeMqh7LX5YoC5 JX2ENuuh3Y0FVboEthw5r9MWipZNpfAFSflqFyYWRLfEg3dpRlgMOmcOXDkvbA== From: Mathieu Dubois-Briand Date: Fri, 09 May 2025 11:14:35 +0200 Subject: [PATCH v8 01/11] dt-bindings: mfd: gpio: Add MAX7360 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250509-mdb-max7360-support-v8-1-bbe486f6bcb7@bootlin.com> References: <20250509-mdb-max7360-support-v8-0-bbe486f6bcb7@bootlin.com> In-Reply-To: <20250509-mdb-max7360-support-v8-0-bbe486f6bcb7@bootlin.com> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kamel Bouhara , Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Michael Walle , Mark Brown , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1746782082; l=8394; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=dk/vOyekPaxUPGQVlP91l7WD880+k0K+cVWxAiOYEDA=; b=Hx6c/UtTS+C/QNcqZaK3RCbCbxfzco4/wXJBO+9LrJpjzCfDA4EeHrxQWDxVRqA6/iwDAUHIL RVSJkK9kvJKBIBcH01w72tXlA7fTFcSpac1bg3APKZ1TIWPYq59hc/G X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvledvvdefucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrthhhihgvuhcuffhusghoihhsqdeurhhirghnugcuoehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeehjedtffefgeefleelkeetvdeggfetgedtjeetuddtveetgedtieelfefgvdeihfenucffohhmrghinhepuggvvhhitggvthhrvggvrdhorhhgpdgrnhgrlhhoghdrtghomhenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvfedprhgtphhtthhopegtohhnohhrodgutheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprhhosghhs ehkvghrnhgvlhdrohhrghdprhgtphhtthhopehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhrtghpthhtoheplhhinhhugidqphifmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtohepuhhklhgvihhnvghksehkvghrnhgvlhdrohhrghdprhgtphhtthhopehgrhgvghhkhheslhhinhhugihfohhunhgurghtihhonhdrohhrgh X-GND-Sasl: mathieu.dubois-briand@bootlin.com Add device tree bindings for Maxim Integrated MAX7360 device with support for keypad, rotary, gpios and pwm functionalities. Reviewed-by: Rob Herring (Arm) Signed-off-by: Mathieu Dubois-Briand --- .../bindings/gpio/maxim,max7360-gpio.yaml | 83 +++++++++ .../devicetree/bindings/mfd/maxim,max7360.yaml | 191 +++++++++++++++++++++ 2 files changed, 274 insertions(+) diff --git a/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml b/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml new file mode 100644 index 000000000000..c5c3fc4c816f --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/maxim,max7360-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim MAX7360 GPIO controller + +maintainers: + - Kamel Bouhara + - Mathieu Dubois-Briand + +description: | + Maxim MAX7360 GPIO controller, in MAX7360 chipset + https://www.analog.com/en/products/max7360.html + + The device provides two series of GPIOs, referred here as GPIOs and GPOs. + + PORT0 to PORT7 pins can be used as GPIOs, with support for interrupts and + constant-current mode. These pins will also be used by the rotary encoder and + PWM functionalities. + + COL2 to COL7 pins can be used as GPOs, there is no input capability. COL pins + will be partitioned, with the first pins being affected to the keypad + functionality and the last ones as GPOs. + +properties: + compatible: + enum: + - maxim,max7360-gpio + - maxim,max7360-gpo + + gpio-controller: true + + "#gpio-cells": + const: 2 + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + + maxim,constant-current-disable: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Bit field, each bit disables constant-current output of the associated + GPIO, starting from the least significant bit for the first GPIO. + maximum: 0xff + +required: + - compatible + - gpio-controller + +allOf: + - if: + properties: + compatible: + contains: + enum: + - maxim,max7360-gpio + ngpios: false + then: + required: + - interrupt-controller + else: + properties: + interrupt-controller: false + maxim,constant-current-disable: false + +additionalProperties: false + +examples: + - | + gpio { + compatible = "maxim,max7360-gpio"; + + gpio-controller; + #gpio-cells = <2>; + maxim,constant-current-disable = <0x06>; + + interrupt-controller; + #interrupt-cells = <2>; + }; diff --git a/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml b/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml new file mode 100644 index 000000000000..3fc920c8639d --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml @@ -0,0 +1,191 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/maxim,max7360.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim MAX7360 Keypad, Rotary encoder, PWM and GPIO controller + +maintainers: + - Kamel Bouhara + - Mathieu Dubois-Briand + +description: | + Maxim MAX7360 device, with following functions: + - keypad controller + - rotary controller + - GPIO and GPO controller + - PWM controller + + https://www.analog.com/en/products/max7360.html + +allOf: + - $ref: /schemas/input/matrix-keymap.yaml# + - $ref: /schemas/input/input.yaml# + +properties: + compatible: + enum: + - maxim,max7360 + + reg: + maxItems: 1 + + interrupts: + maxItems: 2 + + interrupt-names: + items: + - const: inti + - const: intk + + keypad-debounce-delay-ms: + description: Keypad debounce delay in ms + minimum: 9 + maximum: 40 + default: 9 + + rotary-debounce-delay-ms: + description: Rotary encoder debounce delay in ms + minimum: 0 + maximum: 15 + default: 0 + + linux,axis: + $ref: /schemas/input/rotary-encoder.yaml#/properties/linux,axis + + rotary-encoder,relative-axis: + $ref: /schemas/types.yaml#/definitions/flag + description: + Register a relative axis rather than an absolute one. + + rotary-encoder,steps: + $ref: /schemas/types.yaml#/definitions/uint32 + default: 24 + description: + Number of steps in a full turnaround of the + encoder. Only relevant for absolute axis. Defaults to 24 which is a + typical value for such devices. + + rotary-encoder,rollover: + $ref: /schemas/types.yaml#/definitions/flag + description: + Automatic rollover when the rotary value becomes + greater than the specified steps or smaller than 0. For absolute axis only. + + "#pwm-cells": + const: 3 + + gpio: + $ref: /schemas/gpio/maxim,max7360-gpio.yaml# + description: + PORT0 to PORT7 general purpose input/output pins configuration. + + gpo: + $ref: /schemas/gpio/maxim,max7360-gpio.yaml# + description: > + COL2 to COL7 general purpose output pins configuration. Allows to use + unused keypad columns as outputs. + + The MAX7360 has 8 column lines and 6 of them can be used as GPOs. GPIOs + numbers used for this gpio-controller node do correspond to the column + numbers: values 0 and 1 are never valid, values from 2 to 7 might be valid + depending on the value of the keypad,num-column property. + +patternProperties: + '-pins$': + type: object + description: + Pinctrl node's client devices use subnodes for desired pin configuration. + Client device subnodes use below standard properties. + $ref: /schemas/pinctrl/pincfg-node.yaml + + properties: + pins: + description: + List of gpio pins affected by the properties specified in this + subnode. + items: + pattern: '^(PORT[0-7]|ROTARY)$' + minItems: 1 + maxItems: 8 + + function: + description: + Specify the alternative function to be configured for the specified + pins. + enum: [gpio, pwm, rotary] + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - interrupt-names + - linux,keymap + - linux,axis + - "#pwm-cells" + - gpio + - gpo + +unevaluatedProperties: false + +examples: + - | + #include + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + io-expander@38 { + compatible = "maxim,max7360"; + reg = <0x38>; + + interrupt-parent = <&gpio1>; + interrupts = <23 IRQ_TYPE_LEVEL_LOW>, + <24 IRQ_TYPE_LEVEL_LOW>; + interrupt-names = "inti", "intk"; + + keypad,num-rows = <8>; + keypad,num-columns = <4>; + linux,keymap = < + MATRIX_KEY(0x00, 0x00, KEY_F5) + MATRIX_KEY(0x01, 0x00, KEY_F4) + MATRIX_KEY(0x02, 0x01, KEY_F6) + >; + keypad-debounce-delay-ms = <10>; + autorepeat; + + rotary-debounce-delay-ms = <2>; + linux,axis = <0>; /* REL_X */ + rotary-encoder,relative-axis; + + #pwm-cells = <3>; + + max7360_gpio: gpio { + compatible = "maxim,max7360-gpio"; + + gpio-controller; + #gpio-cells = <2>; + maxim,constant-current-disable = <0x06>; + + interrupt-controller; + #interrupt-cells = <0x2>; + }; + + max7360_gpo: gpo { + compatible = "maxim,max7360-gpo"; + + gpio-controller; + #gpio-cells = <2>; + }; + + backlight_pins: backlight-pins { + pins = "PORT2"; + function = "pwm"; + }; + }; + };