From nobody Mon Feb 9 04:37:29 2026 Received: from gate2.alliedtelesis.co.nz (gate2.alliedtelesis.co.nz [202.36.163.20]) (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 55ABC3FE5D for ; Tue, 5 Mar 2024 03:59:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.36.163.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709611143; cv=none; b=NRuLBaqb94Wd2L9b67foK7/3cEnkoHQozAnZiVBQ+yj3PkYxpyPncIyxo1HRu/qDAMlrvm2Kyox9rckoU3Im8tddbrjOLWAfPh/YxRWYGey9JAlOiNb08WV1XUkZ8wKC4eOGmtOAC8uZiAjDJHwDfWZB8tXoPVn2LcXNtdgih2A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709611143; c=relaxed/simple; bh=Sj7U4W3Ba/4+V/i/FY3RRY6GACcDJt/3KeVFEHs2sfY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hdO2W3XwDyDmjtSJijuqvs996g0PnOERXyflujqg/ZIviVCoHEArXS3ureZwTcUeQa+G1+mYMnX/d9i1foqRwuNfKh4Kf//Z0tcGv108mBU/r9LS6nB4tG1lmhq+CGP6cv50eOX3H1cRpY1Xswfy9r95sjYNsDX8jIeU95/gqW0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=alliedtelesis.co.nz; spf=pass smtp.mailfrom=alliedtelesis.co.nz; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b=GSO/dPTp; arc=none smtp.client-ip=202.36.163.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=alliedtelesis.co.nz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alliedtelesis.co.nz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="GSO/dPTp" Received: from svr-chch-seg1.atlnz.lc (mmarshal3.atlnz.lc [10.32.18.43]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by gate2.alliedtelesis.co.nz (Postfix) with ESMTPS id 10ABE2C060F; Tue, 5 Mar 2024 16:58:58 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1709611138; bh=0BoqyozTHZaWo8C3MXXbuh2Lzve8Gtn7awG7ouEY9X4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GSO/dPTptTMjCMcbWMUbtjOFEC07r1xh+1TCG1zanjQlGAoCLurczYvvJ+oEbRYXD 4ZWmV5X4Qf+xot40pHdpZ12COJIsKprK6Sw1VLoqJBfIxfTbyoFArv+DRbQT3a3ilT F3nXD3VXjevvpjpxl/td/o+aDfyRbO+WDB7d4Nt+73uJ5T/Lt/x0KW4smTIo6YTpv8 k9HwzMJJxLGHM4LWGqmuDFEZ/ozveyG2e2V/Lr12vQf5CSM3gdiiEF4qh2UWP1dINq 89anH9OHpW4hGT8PhUOzcSg0UD/Mx3PPAUZUAGE6vHSl7i9gFd6N83IVfZq5mOBHlL 8zafOxW3Vupgw== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Tue, 05 Mar 2024 16:58:57 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id ABB9113EE6D; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id A52C12804F0; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) From: Chris Packham To: andy@kernel.org, geert@linux-m68k.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, lee@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, Chris Packham Subject: [PATCH v4 1/3] auxdisplay: Add 7-segment LED display driver Date: Tue, 5 Mar 2024 16:58:50 +1300 Message-ID: <20240305035853.916430-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240305035853.916430-1-chris.packham@alliedtelesis.co.nz> References: <20240305035853.916430-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65e69881 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=K6JAEmCyrfEA:10 a=U_IlPVK5r1qgVbMESHIA:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat Content-Type: text/plain; charset="utf-8" Add a driver for a 7-segment LED display. At the moment only one character is supported but it should be possible to expand this to support more characters and/or 14-segment displays in the future. Signed-off-by: Chris Packham Reviewed-by: Geert Uytterhoeven --- Notes: Changes in v4: - Fix one more usage of 7 segment - Move ASCII art diagram to DT binding - Include map_to_7segment.h for map_to_seg7() - Use initialiser for values in seg_led_update Changes in v3: - "7 segment" -> "7-Segment" in Kconfig help text - Update after feedback from Andy - Use compatible =3D "gpio-7-segment" as suggested by Rob Changes in v2: - Rebased on top of auxdisplay/for-next dropping unnecessary code for 7 segment maps. - Update for new linedisp_register() API - Include headers based on actual usage - Allow building as module - Use compatible =3D "generic-gpio-7seg" to keep checkpatch.pl happy drivers/auxdisplay/Kconfig | 10 +++ drivers/auxdisplay/Makefile | 1 + drivers/auxdisplay/seg-led-gpio.c | 109 ++++++++++++++++++++++++++++++ 3 files changed, 120 insertions(+) create mode 100644 drivers/auxdisplay/seg-led-gpio.c diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig index d4be0a3695ce..898ecfb34ed7 100644 --- a/drivers/auxdisplay/Kconfig +++ b/drivers/auxdisplay/Kconfig @@ -211,6 +211,16 @@ config ARM_CHARLCD line and the Linux version on the second line, but that's still useful. =20 +config SEG_LED_GPIO + tristate "Generic 7-segment LED display" + select LINEDISP + help + This driver supports a generic 7-segment LED display made up + of GPIO pins connected to the individual segments. + + This driver can also be built as a module. If so, the module + will be called seg-led-gpio. + menuconfig PARPORT_PANEL tristate "Parallel port LCD/Keypad Panel support" depends on PARPORT diff --git a/drivers/auxdisplay/Makefile b/drivers/auxdisplay/Makefile index a725010ca651..4a8ea41b0550 100644 --- a/drivers/auxdisplay/Makefile +++ b/drivers/auxdisplay/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_PARPORT_PANEL) +=3D panel.o obj-$(CONFIG_LCD2S) +=3D lcd2s.o obj-$(CONFIG_LINEDISP) +=3D line-display.o obj-$(CONFIG_MAX6959) +=3D max6959.o +obj-$(CONFIG_SEG_LED_GPIO) +=3D seg-led-gpio.o diff --git a/drivers/auxdisplay/seg-led-gpio.c b/drivers/auxdisplay/seg-led= -gpio.c new file mode 100644 index 000000000000..6c97c068f4c1 --- /dev/null +++ b/drivers/auxdisplay/seg-led-gpio.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for a 7-segment LED display + * + * The decimal point LED present on some devices is currently not + * supported. + * + * Copyright (C) Allied Telesis Labs + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "line-display.h" + +struct seg_led_priv { + struct linedisp linedisp; + struct delayed_work work; + struct gpio_descs *segment_gpios; +}; + +static void seg_led_update(struct work_struct *work) +{ + struct seg_led_priv *priv =3D container_of(work, struct seg_led_priv, wor= k.work); + struct linedisp *linedisp =3D &priv->linedisp; + struct linedisp_map *map =3D linedisp->map; + DECLARE_BITMAP(values, 8) =3D { 0 }; + + bitmap_set_value8(values, map_to_seg7(&map->map.seg7, linedisp->buf[0]), = 0); + + gpiod_set_array_value_cansleep(priv->segment_gpios->ndescs, priv->segment= _gpios->desc, + priv->segment_gpios->info, values); +} + +static int seg_led_linedisp_get_map_type(struct linedisp *linedisp) +{ + struct seg_led_priv *priv =3D container_of(linedisp, struct seg_led_priv,= linedisp); + + INIT_DELAYED_WORK(&priv->work, seg_led_update); + return LINEDISP_MAP_SEG7; +} + +static void seg_led_linedisp_update(struct linedisp *linedisp) +{ + struct seg_led_priv *priv =3D container_of(linedisp, struct seg_led_priv,= linedisp); + + schedule_delayed_work(&priv->work, 0); +} + +static const struct linedisp_ops seg_led_linedisp_ops =3D { + .get_map_type =3D seg_led_linedisp_get_map_type, + .update =3D seg_led_linedisp_update, +}; + +static int seg_led_probe(struct platform_device *pdev) +{ + struct seg_led_priv *priv; + struct device *dev =3D &pdev->dev; + + priv =3D devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + + priv->segment_gpios =3D devm_gpiod_get_array(dev, "segment", GPIOD_OUT_LO= W); + if (IS_ERR(priv->segment_gpios)) + return PTR_ERR(priv->segment_gpios); + + return linedisp_register(&priv->linedisp, dev, 1, &seg_led_linedisp_ops); +} + +static int seg_led_remove(struct platform_device *pdev) +{ + struct seg_led_priv *priv =3D platform_get_drvdata(pdev); + + cancel_delayed_work_sync(&priv->work); + linedisp_unregister(&priv->linedisp); + + return 0; +} + +static const struct of_device_id seg_led_of_match[] =3D { + { .compatible =3D "gpio-7-segment"}, + {} +}; +MODULE_DEVICE_TABLE(of, seg_led_of_match); + +static struct platform_driver seg_led_driver =3D { + .probe =3D seg_led_probe, + .remove =3D seg_led_remove, + .driver =3D { + .name =3D "seg-led-gpio", + .of_match_table =3D seg_led_of_match, + }, +}; +module_platform_driver(seg_led_driver); + +MODULE_AUTHOR("Chris Packham "); +MODULE_DESCRIPTION("7 segment LED driver"); +MODULE_LICENSE("GPL"); --=20 2.43.2 From nobody Mon Feb 9 04:37:29 2026 Received: from gate2.alliedtelesis.co.nz (gate2.alliedtelesis.co.nz [202.36.163.20]) (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 5BA39405FD for ; Tue, 5 Mar 2024 03:59:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.36.163.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709611143; cv=none; b=mjj2e+kMmUofraFucAHAzYc/U1UTVVJCh9fDZfKdWdDjP7sCR1VPLu0QnEvb/EhZ75cW451VIzfJaCp0MJKSEOBQE2+3mhEYLAcofnfIGmBX4QrKJ55eebk1EXxPkgLNbbCBvMTRk6wGX8WIgkncOogXoA/qBcXjzfRhvzQtao4= ARC-Message-Signature: i=1; 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Tue, 5 Mar 2024 16:58:58 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1709611138; bh=xNOHpglBjcYe1JZrqyyKifiDXG6JqFWYwr4cN2SpPQ0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PP4nYQ5bqvTqBXQh34le5pK/pYPJpMFP6v57pXioPu2NW58CvyS3233Oz/z3RA9sJ aBFY2jcZy4TlKFsBPbVd48Q/ji/yHqI6do6DROuKhS1U0bnzfV6C9PYNuLilLP8ODa Vq9bzx6COhJAYFsU06JWyjIW3ZRfZA9QPC81RxMRUvOFBx0QbN7HtytlnKKNPBlmFT 09vuUf+NwClPXwSKMt2ZpCjwmhACfCtCnumEk8K4qJ/0oMODIqa+xDSVem+33eSasg BONiQAaQTmnk6BM5pHOcqKl1kcf5AnJsP5UUvHCJpEkzjKmm3byWZHzW+Gxg9oHcrD nu45U0/J0/Omg== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Tue, 05 Mar 2024 16:58:57 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id B141C13ED56; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id AB22A28091F; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) From: Chris Packham To: andy@kernel.org, geert@linux-m68k.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, lee@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, Chris Packham Subject: [PATCH v4 2/3] dt-bindings: auxdisplay: Add bindings for generic 7-segment LED Date: Tue, 5 Mar 2024 16:58:51 +1300 Message-ID: <20240305035853.916430-3-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240305035853.916430-1-chris.packham@alliedtelesis.co.nz> References: <20240305035853.916430-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65e69881 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=K6JAEmCyrfEA:10 a=gEfo2CItAAAA:8 a=9jK-yGTeFsMUMglnDkMA:9 a=3ZKOabzyN94A:10 a=sptkURWiP4Gy88Gu7hUp:22 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat Content-Type: text/plain; charset="utf-8" Add bindings for a generic 7-segment LED display using GPIOs. Signed-off-by: Chris Packham --- Notes: Changes in v4: - Add ASCII art diagram showing arrangement of segments Changes in v3: - Set maxItems: 7 - Expand description of segment-gpios property. - Use compatible =3D "gpio-7-segment" as suggested by Rob Changes in v2: - Use compatible =3D "generic-gpio-7seg" to keep checkpatch.pl happy .../bindings/auxdisplay/gpio-7-segment.yaml | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/auxdisplay/gpio-7-seg= ment.yaml diff --git a/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.ya= ml b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml new file mode 100644 index 000000000000..172548dfb142 --- /dev/null +++ b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/auxdisplay/gpio-7-segment.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO based LED segment display + +maintainers: + - Chris Packham + +properties: + compatible: + const: gpio-7-segment + + segment-gpios: + description: + An array of GPIOs one per segment. The first GPIO corresponds to the= A + segment the last GPIO corresponds to the G segment. Some LED blocks = also + have a decimal point (currently ignored). + + -a- + | | + f b + | | + -g- + | | + e c + | | + -d- dp + + minItems: 7 + maxItems: 7 + +required: + - segment-gpios + +additionalProperties: false + +examples: + - | + + #include + + led-7seg { + compatible =3D "gpio-7-segment"; + segment-gpios =3D <&gpio 0 GPIO_ACTIVE_LOW + &gpio 1 GPIO_ACTIVE_LOW + &gpio 2 GPIO_ACTIVE_LOW + &gpio 3 GPIO_ACTIVE_LOW + &gpio 4 GPIO_ACTIVE_LOW + &gpio 5 GPIO_ACTIVE_LOW + &gpio 6 GPIO_ACTIVE_LOW>; + }; --=20 2.43.2 From nobody Mon Feb 9 04:37:29 2026 Received: from gate2.alliedtelesis.co.nz (gate2.alliedtelesis.co.nz [202.36.163.20]) (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 57A6F405DC for ; Tue, 5 Mar 2024 03:59:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.36.163.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709611142; cv=none; b=Apa8xRCbwPQumJJpwvq6/x9KbZ5RVIag/i5Tk95+gqiN7sH6p3mN0POcDmmmdizovgDWF832QQb8zuc8tbgE409tLPRkZYJWj31bNofk1KZFlgSjA0fl6W5dzcex3k9pjUoyZzntSGQPbDzEzWpOKV3zNABEPBl+80nnijCw4jM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709611142; c=relaxed/simple; bh=+cOgSZtXjjMtnKVw1LPuAiZ6Mn8UevCnRyLJXg+DB5E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pkRd5Lq+hbtxAmQl2MwD9bqPVcnjTNPA74eExNBMv77o0esUYJaJC4kqGIqyqpoEyFPkMBvDJRU/UgOzSaelK5R9GKiC6Gny6MPmXEFDH1aRXd0c4pcGmPz+lkxw3TUyxndV9Eo7YCzOG+/ZrIMNKQUJ0AvPaOw9ExhmCOvQuZU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=alliedtelesis.co.nz; spf=pass smtp.mailfrom=alliedtelesis.co.nz; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b=JZ+sQf8I; arc=none smtp.client-ip=202.36.163.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=alliedtelesis.co.nz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alliedtelesis.co.nz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="JZ+sQf8I" Received: from svr-chch-seg1.atlnz.lc (mmarshal3.atlnz.lc [10.32.18.43]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by gate2.alliedtelesis.co.nz (Postfix) with ESMTPS id EBFB12C0191; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1709611137; bh=jv/qZKUBNtFx0wjDYe7udNJ1VJ7C8qUMETi24rpmi5U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JZ+sQf8IkMImYFNUjBSxpyFSJcv5YsSMABU8wqRukBTLo+A6R0N1YlLEzmIxXMH+w ibkIgUjRV9QwgjlrZ9kce/UECwwt6pz9X7GZsbaPu1wcPBLa49r+c+3G9VhkfJ77Q8 uHeyQqJMoW/qmILnVhpChGuYmNMocXQcbHgOIyy16vRkZnz12RHIve3Go6mBVFaheS ktLaXlxNPOUCbuetk0L/UMWh1g2xsMvLpgvbTXEfttv+aCl5J0LQb53akg3okF5i28 OVhzlw6YPRcO47qHgM1I2vkPRNRzzzaQKdLjtWBMcPlE6iqoBFQLyZ518SK66ik7DM +U1FEKQQta5zw== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Tue, 05 Mar 2024 16:58:57 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id B376513EE85; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id AFB3728084D; Tue, 5 Mar 2024 16:58:57 +1300 (NZDT) From: Chris Packham To: andy@kernel.org, geert@linux-m68k.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, lee@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, Chris Packham Subject: [PATCH v4 3/3] ARM: dts: marvell: Add 7-segment LED display on x530 Date: Tue, 5 Mar 2024 16:58:52 +1300 Message-ID: <20240305035853.916430-4-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240305035853.916430-1-chris.packham@alliedtelesis.co.nz> References: <20240305035853.916430-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65e69881 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=K6JAEmCyrfEA:10 a=Eze4_Z_RUzIZFoL9sA8A:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat Content-Type: text/plain; charset="utf-8" The Allied Telesis x530 products have a 7-segment LED display which is used for node identification when the devices are stacked. Represent this as a gpio-7-segment device. Signed-off-by: Chris Packham --- Notes: Changes in v4: - Use correct compatible name in commit message Changes in v3: - Use compatible =3D "gpio-7-segment" as suggested by Rob Changes in v2: - Use compatible =3D "generic-gpio-7seg" to keep checkpatch.pl happy arch/arm/boot/dts/marvell/armada-385-atl-x530.dts | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts b/arch/arm/b= oot/dts/marvell/armada-385-atl-x530.dts index 5a9ab8410b7b..60c2abf572b6 100644 --- a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts +++ b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts @@ -43,6 +43,17 @@ uart0: serial@12000 { }; }; }; + + led-7seg { + compatible =3D "gpio-7-segment"; + segment-gpios =3D <&led_7seg_gpio 0 GPIO_ACTIVE_LOW + &led_7seg_gpio 1 GPIO_ACTIVE_LOW + &led_7seg_gpio 2 GPIO_ACTIVE_LOW + &led_7seg_gpio 3 GPIO_ACTIVE_LOW + &led_7seg_gpio 4 GPIO_ACTIVE_LOW + &led_7seg_gpio 5 GPIO_ACTIVE_LOW + &led_7seg_gpio 6 GPIO_ACTIVE_LOW>; + }; }; =20 &pciec { @@ -149,7 +160,7 @@ i2c@3 { #size-cells =3D <0>; reg =3D <3>; =20 - gpio@20 { + led_7seg_gpio: gpio@20 { compatible =3D "nxp,pca9554"; gpio-controller; #gpio-cells =3D <2>; --=20 2.43.2