From patchwork Fri Mar 1 01:42:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 209095 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:fa17:b0:10a:f01:a869 with SMTP id ju23csp170258dyc; Fri, 1 Mar 2024 13:41:18 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCVkU/7Wj9qpyP1t398Sulh8URmtt6fmUNboQ0ujNmHqHxM45AhdA2d3SM8SDcTiCAy2pegD54Uw1JQBvokM669PJIV9CQ== X-Google-Smtp-Source: AGHT+IEtK9S3XxR2LQGzLk4yb0czfz0OG7qPrfcUtYpkvbVoprUIl4No1blk/uFGdghETxljKoPw X-Received: by 2002:a05:620a:2451:b0:787:bd92:4881 with SMTP id h17-20020a05620a245100b00787bd924881mr3679975qkn.76.1709329278000; Fri, 01 Mar 2024 13:41:18 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1709329277; cv=pass; d=google.com; s=arc-20160816; b=lihfOwJhgNh6UxmYm8uDP9yicFbukvPVSDU+qVL+YlxAyfZhT6oQBEnDPo6cPOpD4s 4PreH0ISkC5IE1k3+gfVBVRt7XKIL8ly9ZLVOpQzoF4DyUN8ll1JCeKAiJdly4Nt1OcQ yWqQpKb/MTKiEuOK2fS3vFfvl8gd85uPHRladpvw4gw7NQEFxmX+R2pDUtii1YKilQnY O3WMv5vgqclPVJczx2bFpfweXpk+NEmP5Sqz+j+FwCmc/iiDxrk69Y7yun11vo8V+St8 HRc1DrrG/CXfmXmbyPx+YXIKj5LO5kJO36ZzBLv8q37vhaH1/SGq8ggUuKrEp65IWUcl Hdmw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=zWXVDcjqgm2q5KyAz8sgdgp4FZWDT7x0PrMhgI7cPiA=; fh=gEbwnozYCT7UDgjpsH/BBNf0/YFo/VX4ZDnSwxv7zdA=; b=tGfl7oKBKWC0FkBkJyMgQrqQIkEksCYFOUYitf72I6ZL5vkeD58n9EdTVa0SHycZZ1 GMyUhCEL4W0IJIrr9bVtwglzQwkkPM81hWLg8fxmL969nRWqZTKXWVuUDOvAtMkSdx0W 77RI6ZshtrKGXKGhkVCuxO0lVt6+yxPBjDX8y9z78LA9wldUhwPjcCz3GPHvf5Q+D/w5 Tu8DWmIlibSKLmkamM+qKVI8kp65adkGz7TMlTlOlvFgsC35zV6xQVULCKijj6L1ae1e nT/NslTrIZBzdbhQl10GI7jRjyOH+S7dHIk52ilczF+004Zj0SP9UIe1E/SYYxLIwEaB G02g==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b=k0PcmdhK; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-87792-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-87792-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. [147.75.199.223]) by mx.google.com with ESMTPS id bm19-20020a05620a199300b0078804904a13si3224239qkb.655.2024.03.01.13.41.17 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Mar 2024 13:41:17 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-87792-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223; Authentication-Results: mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b=k0PcmdhK; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-87792-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-kernel+bounces-87792-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 5DB111C222BD for ; Fri, 1 Mar 2024 01:43:28 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 785AF3A1BD; Fri, 1 Mar 2024 01:42:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="k0PcmdhK" 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 5F1152E3F9 for ; Fri, 1 Mar 2024 01:42:12 +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=1709257336; cv=none; b=bpCdn6EM0Ly+yw29S9YU3/9mrxkayrpaOgfR9dxdCP7twFEERzL9qBFdxIZuzfuK0IwMaZACZ7iPVhsF0zmbuizGoBrR0eLhmHvvCo9LF2YYJKQZoNOMSkHZaemNBfR0OYyVURKCtjTeJwI58//vdpTCN5w5sau04Ah01HVHYw4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709257336; c=relaxed/simple; bh=RNUeX2QswcUV/QEhcNBHWEj8Ccpf3D8EvbFjfCOMyUE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gvlypJGHGfmhkjgHszqLsSAqmXCGrIL5eqsqenF5UPJLrpL56cfB/QaVQGykHCWzikghGdAjDwxBIE8vG4QimIJIx3enr7frz44DbpXxJOhYI8RaHlSBsplnXv8TxS7vlKqqClPBFyU8aQv/M8ws3DWhXPVB8gwuP2kqGQB5bhE= 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=k0PcmdhK; 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 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 443812C04EC; Fri, 1 Mar 2024 14:42:10 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1709257330; bh=zWXVDcjqgm2q5KyAz8sgdgp4FZWDT7x0PrMhgI7cPiA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k0PcmdhKPs/9cboPxvtOFHvfUzIdthQ9LqF/xKRmwRptHtx1TXLLCoLkigNAgDiKb Jz6oO3xqsK3KjBwMVSkBAQ2ilskb3UOQGAhxgONBWXp0k93Xk8WRkK7jR+JKIP7AXB 4tlS8EfHc6c1QEV8IVn51LZBc3dpmKnVeAtvLYmNtOhih1i6fRNoCOaMzUwMogrbXz u6Kcd+PdjmxOdhIt7r0KlZeLS83ArER3WWb8TynYH9sJAfa1CK22vDqE185b1dpmPf U6Erg24lamFtAu0vBFFUU6cDy00pXcomrGy9mnH8R4fCbvzR2aHgMVq+upr+BkQTWI yhmDWbwFyZHTQ== 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 ; Fri, 01 Mar 2024 14:42:10 +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 0BCCA13EE4F; Fri, 1 Mar 2024 14:42:10 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 07A38280062; Fri, 1 Mar 2024 14:42:10 +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, pavel@ucw.cz, lee@kernel.org Cc: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Chris Packham Subject: [PATCH v3 1/4] auxdisplay: Add 7-segment LED display driver Date: Fri, 1 Mar 2024 14:42:00 +1300 Message-ID: <20240301014203.2033844-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301014203.2033844-1-chris.packham@alliedtelesis.co.nz> References: <20240301014203.2033844-1-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 X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65e13272 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=K6JAEmCyrfEA:10 a=F0jKMMnsshfnaHI64i4A:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792351847875017984 X-GMAIL-MSGID: 1792361657085423973 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 --- Notes: Changes in v3: - "7 segment" -> "7-Segment" in Kconfig help text - Update after feedback from Andy - Use compatible = "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 = "generic-gpio-7seg" to keep checkpatch.pl happy drivers/auxdisplay/Kconfig | 10 +++ drivers/auxdisplay/Makefile | 1 + drivers/auxdisplay/seg-led-gpio.c | 122 ++++++++++++++++++++++++++++++ 3 files changed, 133 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. +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-$(CONFIG_PARPORT_PANEL) += panel.o obj-$(CONFIG_LCD2S) += lcd2s.o obj-$(CONFIG_LINEDISP) += line-display.o obj-$(CONFIG_MAX6959) += max6959.o +obj-$(CONFIG_SEG_LED_GPIO) += 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..01aad84d0c82 --- /dev/null +++ b/drivers/auxdisplay/seg-led-gpio.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for a 7 segment LED display + * + * The GPIOs are wired to the 7 segments in a clockwise fashion starting from + * the top. + * + * -a- + * | | + * f b + * | | + * -g- + * | | + * e c + * | | + * -d- + * + * 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 "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 = container_of(work, struct seg_led_priv, work.work); + struct linedisp *linedisp = &priv->linedisp; + struct linedisp_map *map = linedisp->map; + DECLARE_BITMAP(values, 8); + + bitmap_zero(values, 8); + 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 = 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 = container_of(linedisp, struct seg_led_priv, linedisp); + + schedule_delayed_work(&priv->work, 0); +} + +static const struct linedisp_ops seg_led_linedisp_ops = { + .get_map_type = seg_led_linedisp_get_map_type, + .update = seg_led_linedisp_update, +}; + +static int seg_led_probe(struct platform_device *pdev) +{ + struct seg_led_priv *priv; + struct device *dev = &pdev->dev; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + + priv->segment_gpios = devm_gpiod_get_array(dev, "segment", GPIOD_OUT_LOW); + 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 = 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[] = { + { .compatible = "gpio-7-segment"}, + {} +}; +MODULE_DEVICE_TABLE(of, seg_led_of_match); + +static struct platform_driver seg_led_driver = { + .probe = seg_led_probe, + .remove = seg_led_remove, + .driver = { + .name = "seg-led-gpio", + .of_match_table = seg_led_of_match, + }, +}; +module_platform_driver(seg_led_driver); + +MODULE_AUTHOR("Chris Packham "); +MODULE_DESCRIPTION("7 segment LED driver"); +MODULE_LICENSE("GPL"); From patchwork Fri Mar 1 01:42:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 209267 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:fa17:b0:10a:f01:a869 with SMTP id ju23csp674997dyc; Sat, 2 Mar 2024 14:32:24 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCX3umdE91yO2+9ThpXpFEOXHEvhOSLJREOuqBR5BTwjKyL7oR3MyencUF1LEc8kZKCroSkCXCOfEb7v7XCzDVQHfkOY5w== X-Google-Smtp-Source: AGHT+IFXKbl3gT5YJRDfzvkVcOHZmSqWknO4+P3N2poXR53eU4H1So0SoVOvxKSRCr9Mg9RkGSlm X-Received: by 2002:a17:906:1906:b0:a44:7db8:a343 with SMTP id a6-20020a170906190600b00a447db8a343mr3796043eje.76.1709418744135; Sat, 02 Mar 2024 14:32:24 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1709418744; cv=pass; d=google.com; s=arc-20160816; b=XYZYIGj1t1KcdpzXqmuIYfeG7YUtPQfqEscPAXv54IBwNTxoKWdLS5C6OC6pvUS2Jf 6j2moYUvcQcI3WNrYCkIy9bGaz/aBx5y9Tbh8N/J2Fiy3p52V6C0YLgEnMgW7fhXtrVC qRC2DEilICqhyIk4HaGoJtbFuxlpyb7xabSYXxC6d6lsutqcrlM+yeIRq8sXnlY9ind1 0OWdRhT2QVU3q8ArY1lyMHY47S6DXXA/VhB8l2Vu7zY45ITxF/yQGh6IiAqLJQEwFEJA KWhXuJ8bMGyQdRL5fuaT4yun2VKBpU9tKuVrpZFwC3pJRcCwoo5aGqWuECrgkV1EJ2T+ zC9A== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=JW2bMplHMgFkl36aF3i5UY7E0A+/8mHR15PnOH9d9ek=; fh=gEbwnozYCT7UDgjpsH/BBNf0/YFo/VX4ZDnSwxv7zdA=; b=njYehGidNr26qlyrZzM7GGSdRLKR3yv+EZMsiJTX7yofno2z1YMKZ/IUVgHHDMTfKv Ns3X+TViKZLvs0+n25+saP35kf3fyyqqH/MUg9lr9L+w/D0y+fzBm1Q86WHC8FA7RY/H 77bOgLdczOFcuuBcOBX7LmMNk9eMLfurzFadyysv3uiKH66cg269VICGFEoaiZ7zaMld 0iQRBhwVZke2fWSOfMl2EeAKFHWUW4U/BWtJ28EHroDoL1zFEz5fUWxCwUo0+5HGP/lZ ZsH3zV0JbnMUakp/xvkKHnLh3zZb2zzMpjdUeGP5mdf09KpQuPl3OL7fmL9jsd/PiLl3 eFUg==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b="G/Zkkep3"; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-87793-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) smtp.mailfrom="linux-kernel+bounces-87793-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from am.mirrors.kernel.org (am.mirrors.kernel.org. [147.75.80.249]) by mx.google.com with ESMTPS id x9-20020a1709065ac900b00a3f17b3e98asi2596418ejs.870.2024.03.02.14.32.23 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Mar 2024 14:32:24 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-87793-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249; Authentication-Results: mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b="G/Zkkep3"; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-87793-ouuuleilei=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) smtp.mailfrom="linux-kernel+bounces-87793-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 58AA31F2526C for ; Fri, 1 Mar 2024 01:43:25 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id EF9763A1A8; Fri, 1 Mar 2024 01:42:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="G/Zkkep3" 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 5F3072EB0A for ; Fri, 1 Mar 2024 01:42:12 +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=1709257336; cv=none; b=eV425iuUB9naFQMgy0aEFi/XKk2+8kywbkPhQoFX9H3F2n5o7YxOkl+W3eLr6sPWTM6aCb8IqOuAnEA124ZeyKq7+lcCU7mExj31Cz7GLhdvoCR1pLFTuhj+AvDFWRBB0zEQvNiEjKKRW3VgPKWMZPhDto/Gu1f+hkyC/McHpN4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709257336; c=relaxed/simple; bh=+K2NA3pCkHMP4WVGu6nTDubCMHmDN2IFGsQxB8tXWZM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pUsSpnIzJNDI8PhMqaSByjwToj3DGpBAQ+UGOLwO8dosYsNvddfHKW0vMjIbkF2a4LsVtpmyNufnlOOJer5oSyhNP7qP1KvT5XjdVdqnhNKySDcH1bFWpK2MGivIAo631YJf5PMBGsg5p/HuMW4YHB4xPxzw92p2jBjp94Crv/g= 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=G/Zkkep3; 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 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 6D5AB2C061F; Fri, 1 Mar 2024 14:42:10 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1709257330; bh=JW2bMplHMgFkl36aF3i5UY7E0A+/8mHR15PnOH9d9ek=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G/Zkkep3XzfHlKmKvzBs6P9Yso6NjjSoJyj4FDMCLIw2WrK1p84ThJ+x4YziJ6zfM g/Duod0tr8tQYMojeUoR20WJ9r6+oJUyHOoQiawlwhovRLKU9nfck2K9L1mTU9PGTU flvSc7eaIwXTubOTTm1NSSB7TxJM0YwxyrIEbKUq3Z3B+1q8G7yeHwMZNfGO7m4jI3 4WiZEzv9QTq1Zje47UeN7KeZl2nkIfp3SnoqZZJAl6KWPDX8LN4d8g4TayZ/cWxROa jBsNN/yovkU0WI3e6jE+eMGayXFM3xsB0HDihJC0lbicAUhmGpWsROCu/eKn5J5BMB axCHyyvsnC6eQ== 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 ; Fri, 01 Mar 2024 14:42:10 +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 12B8313EDA8; Fri, 1 Mar 2024 14:42:10 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 0FBE8280062; Fri, 1 Mar 2024 14:42:10 +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, pavel@ucw.cz, lee@kernel.org Cc: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Chris Packham Subject: [PATCH v3 2/4] dt-bindings: auxdisplay: Add bindings for generic 7-segment LED Date: Fri, 1 Mar 2024 14:42:01 +1300 Message-ID: <20240301014203.2033844-3-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301014203.2033844-1-chris.packham@alliedtelesis.co.nz> References: <20240301014203.2033844-1-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 X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65e13272 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=K6JAEmCyrfEA:10 a=gEfo2CItAAAA:8 a=UL8_YvhhsuCliVb0JXoA:9 a=3ZKOabzyN94A:10 a=sptkURWiP4Gy88Gu7hUp:22 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792349291478769982 X-GMAIL-MSGID: 1792455468735118349 Add bindings for a generic 7-segment LED display using GPIOs. Signed-off-by: Chris Packham --- Notes: Changes in v3: - Set maxItems: 7 - Expand description of segment-gpios property. - Use compatible = "gpio-7-segment" as suggested by Rob Changes in v2: - Use compatible = "generic-gpio-7seg" to keep checkpatch.pl happy .../bindings/auxdisplay/gpio-7-segment.yaml | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml diff --git a/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml new file mode 100644 index 000000000000..76af4bf4e9a6 --- /dev/null +++ b/Documentation/devicetree/bindings/auxdisplay/gpio-7-segment.yaml @@ -0,0 +1,42 @@ +# 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. + minItems: 7 + maxItems: 7 + +required: + - segment-gpios + +additionalProperties: false + +examples: + - | + + #include + + led-7seg { + compatible = "gpio-7-segment"; + segment-gpios = <&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>; + }; From patchwork Fri Mar 1 01:42:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 209096 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7301:fa17:b0:10a:f01:a869 with SMTP id ju23csp172410dyc; Fri, 1 Mar 2024 13:46:31 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCVkyimvQPCmxqtepvQH2iFbLkSva4T1m9dTJld2MdktYku8qZ5nFAMHC3Luie8cmsTiA1I4WNQ04q6IEMZO2LQYE4HXhA== X-Google-Smtp-Source: AGHT+IE69Z6WNgQwJLFD0Qp3unilZXkGc3TF5UhXgx05B3ZhIvEkLMT1olEgFrKFkxfkabXKZmoK X-Received: by 2002:a05:6a20:438a:b0:1a0:f1d2:7094 with SMTP id i10-20020a056a20438a00b001a0f1d27094mr9862860pzl.3.1709329591296; Fri, 01 Mar 2024 13:46:31 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1709329591; cv=pass; d=google.com; s=arc-20160816; b=r0EWwb7N5E3NaqJ8P46JBNjKNt3Yd6J9OxxlM3UqHFkSb0IrUJWYlK37Rp9kG0EEMn 1DEab8TRpqc0UzyfEIu+PUQfHJo5i3jDYj0RSRGOZgK9n5IZrr2D3/3Beo0Gd9ywIhPW PDU0SEO8hfVepv2yAUVGIfqqG3XWou7FUetnaSGKKedMm9kzjx6vk5vk7ChYxq1hWZ/p jRlDJiXLMxXL3Ah61nT2foPTWrOBsa7SUPQRzcq7UK1WJPFInrtpkQ2qvLmsr16FjeNa C+J8ZfKIpcAMHUzS8FtdX0uq8fTYGcMV2ayxXGHe9KK/SunBewZJLDUcfQE1NVCjcEsK Lz0g== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=2OH3OgCTooM4dlx8pTy20vLATdgGUykmG4vimpbjzRY=; fh=gEbwnozYCT7UDgjpsH/BBNf0/YFo/VX4ZDnSwxv7zdA=; b=bd6e1D9d7lIpQchg5U6ps4sYo/19SQD6joIxvDirKAsZEigBufot2Rukwii6RpTzNk oaHEt9v4C/OuXDVNw/UaOCGQq5ehihrQCs7iJZo2c8BhZ5PLS1JdTg/tiRdwdtpYdd5t JBN4MWB39Io65aMGk+1Rn4E71nEorZlzy+dJwLm7QzCOWsudeutyUw+qCjIExVjmJzVy p2YUivtcYd7lUJsCKMsGqxc0gDqCBVNl7s9rE78G20SSGoDmIkah+V9jG706tOHXwBA1 hru/d0L1TpBQ4D3zxO9BSAdoH+Hm0/d2azrJLsaEN4Eim6lnd76fwmszwQ7apAz1bK2y Dl1w==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b=l67SaZlz; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-87789-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-87789-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org. [2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id k5-20020a6568c5000000b005dc82d9ff85si4178335pgt.599.2024.03.01.13.46.31 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Mar 2024 13:46:31 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-87789-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b=l67SaZlz; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-87789-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-87789-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id A0C1E286208 for ; Fri, 1 Mar 2024 01:43:11 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 45F2039FCF; Fri, 1 Mar 2024 01:42:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="l67SaZlz" 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 5F2C92E842 for ; Fri, 1 Mar 2024 01:42:12 +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=1709257335; cv=none; b=MaSmRrcx/KebcdkD3NK0LZx5nMCAQ3NlaVqaLTb/Dg40tcqD6eGq5Y/gLx+McSFLuGTRaSMnQiioXc8JmLExjrtMZUsrvQ46ow/UKPHjhyVLolLFpbqMJFZ0WLpVDosGmv961br9KYDaP33CGqjyjNKQgqXAfQUuTVVa0sV+oV4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709257335; c=relaxed/simple; bh=mqJ/h7AKCJjaQlaxgMWt2R0Pal/NayZ3fO20oRdoXeU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VYdIRISShwObdn4hWEGl2UKx7AHRNC88jY7HWBe65ulTcBRCZqxoXVzzb/gmTn7OKij1tCp/9schtAMAyquoUI99aJ3XHxBc8DQyU4DLpjXn2ONjuTdJPAhUUyDmCukbddx0RFEDvmc9AHIBgRfdWVq6BAqRbLxgYXZiBgUg8Fw= 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=l67SaZlz; 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 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 4DC852C05E7; Fri, 1 Mar 2024 14:42:10 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1709257330; bh=2OH3OgCTooM4dlx8pTy20vLATdgGUykmG4vimpbjzRY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l67SaZlzE/pE9H68zgUNjYcx621jCphPo5OKM+07TZ4S8tEhsanBfIVODaMgfdTom DCdFRTr0RGMvz4XgP8I7x38fHpSPgYsra51iFAneZSgFCkVWwpR5vmw4hrQ00hOw+g IWVcf8RM3Z/vqCP5KRP90ax2xvhhLFkDSKc6BgG6p85GpIXjdJSlbwFCgAtAFQ49PO 7QQJgb9Y17CEtx+VQSEh3pmWatc5EhBK/WeTafgpmYMpJJe0tCx3d+/G4fXLmRAL3/ uaSKytU1i0VghXyRUEnJBGe32kHprkMRnI6tn8T8OodRlaGSVZ/TuPMjYUWnW+Umnq uzoBUhZxlR+rQ== 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 ; Fri, 01 Mar 2024 14:42:10 +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 1974113EE4F; Fri, 1 Mar 2024 14:42:10 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 16C3D280062; Fri, 1 Mar 2024 14:42:10 +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, pavel@ucw.cz, lee@kernel.org Cc: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Chris Packham Subject: [PATCH v3 3/4] ARM: dts: marvell: Add 7-segment LED display on x530 Date: Fri, 1 Mar 2024 14:42:02 +1300 Message-ID: <20240301014203.2033844-4-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301014203.2033844-1-chris.packham@alliedtelesis.co.nz> References: <20240301014203.2033844-1-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 X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65e13272 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=K6JAEmCyrfEA:10 a=ZwCSNx74X_mE_I29kl4A:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1792349337693567021 X-GMAIL-MSGID: 1792361985447619824 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 generic-gpio-7seg device. Signed-off-by: Chris Packham --- Notes: Changes in v3: - Use compatible = "gpio-7-segment" as suggested by Rob Changes in v2: - Use compatible = "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/boot/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 = "gpio-7-segment"; + segment-gpios = <&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>; + }; }; &pciec { @@ -149,7 +160,7 @@ i2c@3 { #size-cells = <0>; reg = <3>; - gpio@20 { + led_7seg_gpio: gpio@20 { compatible = "nxp,pca9554"; gpio-controller; #gpio-cells = <2>;