From patchwork Mon Jan 13 12:42:25 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: 13937280 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) (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 CC8C322AE7E; Mon, 13 Jan 2025 12:43:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.193 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736772192; cv=none; b=J6WiKgvkm5+ct2Z5TXQkzxpQriHfxcIjCEciz8MpCFIIAIxWDvzJwgP2JwAdpGW3mc7m3p2XOG5zzhBq1UColxzxhcrI+hYhZko9noPKwOO54/LtsfWr82AM9yGKfIfxEqNkvnGFrn1igYxfRMn4+voiVAlmV856Rivp31NS/Tw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736772192; c=relaxed/simple; bh=ODglhPFVnVDN8BVGkHDVoqefXYYgnyBsrHtnytIzUrU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=XsXn2i+c09+E37I2WR3nNWF7y0bZFZCy9prgrBZPrjE1oAyHMqmS7PMRMVo8wwuSDZwQiZMT+31iVCl0WLQPnaC2zab4rMdBL4zQsn1UW+dIpIQ7oRVmiPCcEjNW8VQu0vBa7PUsuCoadl615xuEom79+CNkBjX+nWGOwQ8hP5U= 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=F3njNEED; arc=none smtp.client-ip=217.70.183.193 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="F3njNEED" Received: by mail.gandi.net (Postfix) with ESMTPSA id 8C7A124000C; Mon, 13 Jan 2025 12:43:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1736772187; 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=w54nrKtmVpJfltBl3RujGp31pqn4kM3sN6PJMGjGl1Q=; b=F3njNEEDVP7zwiV+YOLRH8vLlcvjcRPVG5HRKl1SwopNH6c4clNpclkyETYPgSEYmzzOPW tjwH2cSF3uowbe7c23KVlfhjt1Z+eUSDfyTgX9+f1jmL0UY/Hd37d6jbVtLEwPve3Aaa48 xzJkRhf9jPR55NCP/uvY7V/kQbakKUauEQ+S2BGu/aoyuukgaIqHsJWwOVaIFuE54sM3DL Py/fOdj6+49jK9CWBnJ6zf0CcaxkIC1KmO7gIqo62Y4wC4nl81OtCz1EuJqqZreL+yFo8U ZTIA7ejx774+KMiE+wNR0mScBrRoyTCJEJkbjvj7JnjfP7dWwcUu8OFZ96ZuMA== From: Mathieu Dubois-Briand Date: Mon, 13 Jan 2025 13:42:25 +0100 Subject: [PATCH v3 1/7] 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: <20250113-mdb-max7360-support-v3-1-9519b4acb0b1@bootlin.com> References: <20250113-mdb-max7360-support-v3-0-9519b4acb0b1@bootlin.com> In-Reply-To: <20250113-mdb-max7360-support-v3-0-9519b4acb0b1@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?= 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, =?utf-8?q?Gr=C3=A9gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1736772185; l=6813; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=ODglhPFVnVDN8BVGkHDVoqefXYYgnyBsrHtnytIzUrU=; b=2lS3OIy428EVwKiB5/sLfwGQPUHoun7zGs+glc1ZG0cyPi4eqBZY7/dTt3KF5tVGLem6En+3n aI1BlIvQ3uYC5BSTHjfI7eRExwaJJsIcPwm1WWz8oXAQfW43kCggQqJ X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= 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. Signed-off-by: Mathieu Dubois-Briand --- .../bindings/gpio/maxim,max7360-gpio.yaml | 90 +++++++++++++ .../devicetree/bindings/mfd/maxim,max7360.yaml | 140 +++++++++++++++++++++ 2 files changed, 230 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..95e9ccd455c2 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml @@ -0,0 +1,90 @@ +# 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 provide 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 torary encoder and + PWM functionalities. + + COL2 to COL7 pins can be used as GPOs, there is no input capability. COL pins + will be partitionned, with the first pins being affected to the keypad + functionality and the last ones as GPOs. This partioning must be described + here using the ngpios property. + +properties: + compatible: + enum: + - maxim,max7360-gpio + - maxim,max7360-gpo + + gpio-controller: true + + "#gpio-cells": + const: 2 + + ngpios: + minimum: 0 + maximum: 8 + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + + maxim,constant-current-disable: + $ref: /schemas/types.yaml#/definitions/uint32 + description: > + Bit field, each bit disables constant-current output of the associated + GPIO, starting from the least significant bit for the first GPIO. + +required: + - compatible + - gpio-controller + - ngpios + +if: + properties: + compatible: + contains: + enum: + - maxim,max7360-gpio +then: + required: + - interrupt-controller +else: + properties: + interrupt-controller: false + maxim,constant-current-disable: false + + ngpios: + maximum: 6 + +additionalProperties: false + +examples: + - | + gpio { + compatible = "maxim,max7360-gpio"; + + gpio-controller; + #gpio-cells = <2>; + ngpios = <8>; + maxim,constant-current-disable = <0x06>; + + interrupt-controller; + #interrupt-cells = <2>; + }; diff --git a/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml b/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml new file mode 100644 index 000000000000..7c50bab8c6d6 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/maxim,max7360.yaml @@ -0,0 +1,140 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$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 + + autorepeat: true + + rotary-debounce-delay-ms: + description: Rotary encoder debounce delay in ms + minimum: 0 + maximum: 15 + default: 0 + + linux,axis: + description: The input subsystem axis to map to this rotary encoder. + + "#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. Value + of ngpios must be coherent with the value of keypad,num-columns, as their + sum must not exceed the number of physical lines. + +required: + - compatible + - reg + - interrupts + - interrupt-names + - linux,keymap + - linux,axis + - "#pwm-cells" + +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 */ + + #pwm-cells = <3>; + + max7360_gpio: gpio { + compatible = "maxim,max7360-gpio"; + + gpio-controller; + #gpio-cells = <2>; + ngpios = <8>; + maxim,constant-current-disable = <0x06>; + + interrupt-controller; + #interrupt-cells = <0x2>; + }; + + max7360_gpo: gpo { + compatible = "maxim,max7360-gpo"; + + gpio-controller; + #gpio-cells = <2>; + ngpios = <4>; + }; + }; + };