From patchwork Mon May 1 23:05:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sahin, Okan" X-Patchwork-Id: 89200 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp234486vqo; Mon, 1 May 2023 16:18:42 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4oq90y8RI5vGfvh9kltDYHvkEjFPYFfH2Pk5T9EOj5AtOTpqoCfTzZERwVC0Wk+ik9RyIj X-Received: by 2002:a17:902:d2c5:b0:1a1:bf22:2b6e with SMTP id n5-20020a170902d2c500b001a1bf222b6emr20064011plc.43.1682983121992; Mon, 01 May 2023 16:18:41 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1682983121; cv=none; d=google.com; s=arc-20160816; b=jbb1KRvUvcHgUZoxvUHrIMFNu9KWwTPzPGXtmET7EB5Rn/q5qzNkDd5Suv5apSkixk Xl+A5x0Ki+GcKSEiT0KFweBQJmchbPtXqET6z0sHU4x/IAVsYrYD9ggH59UYqaGV2PrO D8vLsA8uDSUhbReT0Fo/BvzShiIJUNyXISKySJyaX0UFm3nIXumm7CrtYfl2ncrAdkHq X7aJz7Mil0XA7Ly0NsXxCri/MnEQt+ZifVOb4K2OLGUs8BSlPfpKSNnw0uu0P9AJUD7l I72LbA/n06JBtfL0qYsU3bNyydECKs3rIAryROlsS641fDwUo0syz5M1Z/9XlLTVFd6f 9OsQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=I1TteJlCdYg3P7ZwJega8NPLmTnf/l75JhGjIWM/FgU=; b=NUfV4X4NgrrXlFcClco+bUbFDjHcmPh2sgz3PYl+NxSGiECEwDCtYzLGWFeAorFu2h 7iPfBjD8YRW6TCniegWZSFDjaTTlnoDrGu4MaNTVhAaFamx+eSAvlp5Kk5qj5nTneDqG D5e5yVcERG+HpM63yr77MOz0t1hPqJbwClLMeckAAmT08FZ8nrclb7vqLvYAH2Fl8atz ukUTP162c1+BGAS5xsLKIXZtH/ttgYtw3JnMU2CzuOMz74m0xnwNYQuBS1Fg0xmJhdqz YxNIAh4nZTgppmlY4pIx3yFKYDt1/ssezlIJsN/rQmAa/+uUb2EzNDQvV6a4h5qUMY1v W9rA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=analog.com Received: from out1.vger.email (out1.vger.email. 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Signed-off-by: Okan Sahin Reviewed-by: Krzysztof Kozlowski Reviewed-by: Linus Walleij --- .../bindings/gpio/adi,ds4520-gpio.yaml | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml diff --git a/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml b/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml new file mode 100644 index 000000000000..ea2cfbebda9b --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/adi,ds4520-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: DS4520 I2C GPIO expander + +maintainers: + - Okan Sahin + +properties: + compatible: + enum: + - adi,ds4520-gpio + + reg: + maxItems: 1 + + gpio-controller: true + + "#gpio-cells": + const: 2 + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + gpio@50 { + compatible = "adi,ds4520-gpio"; + reg = <0x50>; + gpio-controller; + #gpio-cells = <2>; + }; + }; From patchwork Mon May 1 23:05:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sahin, Okan" X-Patchwork-Id: 89198 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp234262vqo; Mon, 1 May 2023 16:18:11 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ71bbXDmq26L/kUP7YJCK5aw6EAzLtsPhIdZf0czLboAQDux6zWOXg/TfHefzD4XTPc1bWj X-Received: by 2002:a05:6a20:3d8f:b0:f3:c08:cdef with SMTP id s15-20020a056a203d8f00b000f30c08cdefmr19916974pzi.58.1682983091585; Mon, 01 May 2023 16:18:11 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1682983091; cv=none; d=google.com; s=arc-20160816; b=caz++eKyqUyB3DsA4o9Nr97Iggp8GEM4r9Vcy3wvsfdTU2t2hLGuB4JDYp1K6uhuMx r6D/UXECEprqya4qvw8XSUoC/3tmi/3iTroaPyLFKWLF4CP+EZRpGErppyQ+G/XtO+Zl sLT9c5TCMtS2/J/WavbkKtW2hderC93u2kTgLjqJ1G1dKLUYwO8qPEpNYwmOzVlFuF4b jQk2yxTLLecFZ0PJ0XDrY0RHHWsajARBjtXL8XZ95hP2vW979WGO65FwSrbHSyOZFR6/ ZKbX4AgQxzDKXHyjogCo28fn98daceUstclgpYY2zjr55rt+Zzo/jypNscI94VKgnutZ E3nQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=+TftSbiVGicudaMZMoXxQlrP61km7Y7PDm3yOc2TVqY=; b=dmpjvWi5XBlvuUoe//krtb0U8YFya6HLpGbpa2tPkMcKA12rLjjZBQpDM5MrI/8aSn 4Ks0WJ2/O+xM8AAxA5e2Os0pSDoVqE0Yth+FGPwj4e+SM8ynFQi/4vWK0pg56pQSc3zk NP9r1OviPhg5bdp/0SExZPd3df3rgyno8bLI5i7ImZBg6FvJcFMZHRsI1gUNryr4n+AA IJpPZOlrwEkcP1gqpBBE1fVgRN8ZNwyWGSinHhEpTz4S+Vs/0FiXlGjDUMsAHHg5G3yD 3WU4+C2i8atLQEOReFC9ufFWzXfAPWabBrudSaGcytgADT8wjJel1r3HaHJiIqZUG3tQ evuQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=analog.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id b3-20020a63d303000000b0050bd8dd1b5asi24496631pgg.43.2023.05.01.16.17.58; Mon, 01 May 2023 16:18:11 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=analog.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233234AbjEAXGG (ORCPT + 99 others); Mon, 1 May 2023 19:06:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233156AbjEAXGD (ORCPT ); Mon, 1 May 2023 19:06:03 -0400 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 14665358B; Mon, 1 May 2023 16:06:01 -0700 (PDT) Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 341MdjXh003950; Mon, 1 May 2023 19:05:57 -0400 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3q8w3aef67-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 01 May 2023 19:05:57 -0400 Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 341N5uDA056200 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 1 May 2023 19:05:56 -0400 Received: from ASHBCASHYB4.ad.analog.com (10.64.17.132) by ASHBMBX9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 1 May 2023 19:05:55 -0400 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBCASHYB4.ad.analog.com (10.64.17.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 1 May 2023 19:05:54 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 1 May 2023 19:05:54 -0400 Received: from okan.localdomain ([10.158.19.61]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 341N5QQj005911; Mon, 1 May 2023 19:05:49 -0400 From: Okan Sahin To: CC: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , , , Subject: [PATCH v2 2/2] gpio: ds4520: Add ADI DS4520 GPIO Expander Support Date: Tue, 2 May 2023 02:05:16 +0300 Message-ID: <20230501230517.4491-3-okan.sahin@analog.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230501230517.4491-1-okan.sahin@analog.com> References: <20230501230517.4491-1-okan.sahin@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: 61MpMiK2BLsEvwWznN-jo9SNWWj8kRyt X-Proofpoint-ORIG-GUID: 61MpMiK2BLsEvwWznN-jo9SNWWj8kRyt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-01_14,2023-04-27_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=897 impostorscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 bulkscore=0 adultscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2305010186 X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1764735678073350359?= X-GMAIL-MSGID: =?utf-8?q?1764735678073350359?= The DS4520 is a 9-bit nonvolatile (NV) I/O expander. It offers users a digitally programmable alternative to hardware jumpers and mechanical switches that are being used to control digital logic node. Signed-off-by: Okan Sahin --- drivers/gpio/Kconfig | 11 +++++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-ds4520.c | 83 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 95 insertions(+) create mode 100644 drivers/gpio/gpio-ds4520.c diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 13be729710f2..5f89e46d6411 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1000,6 +1000,17 @@ config GPIO_ADNP enough to represent all pins, but the driver will assume a register layout for 64 pins (8 registers). +config GPIO_DS4520 + tristate "DS4520 I2C GPIO expander" + select REGMAP_I2C + select GPIO_REGMAP + help + GPIO driver for ADI DS4520 I2C-based GPIO expander. + Say yes here to enable the GPIO driver for the ADI DS4520 chip. + + To compile this driver as a module, choose M here: the module will + be called gpio-ds4520. + config GPIO_GW_PLD tristate "Gateworks PLD GPIO Expander" depends on OF_GPIO diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index c048ba003367..6f8656d5d617 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -52,6 +52,7 @@ obj-$(CONFIG_GPIO_DA9052) += gpio-da9052.o obj-$(CONFIG_GPIO_DA9055) += gpio-da9055.o obj-$(CONFIG_GPIO_DAVINCI) += gpio-davinci.o obj-$(CONFIG_GPIO_DLN2) += gpio-dln2.o +obj-$(CONFIG_GPIO_DS4520) += gpio-ds4520.o obj-$(CONFIG_GPIO_DWAPB) += gpio-dwapb.o obj-$(CONFIG_GPIO_EIC_SPRD) += gpio-eic-sprd.o obj-$(CONFIG_GPIO_EM) += gpio-em.o diff --git a/drivers/gpio/gpio-ds4520.c b/drivers/gpio/gpio-ds4520.c new file mode 100644 index 000000000000..3358c2faa787 --- /dev/null +++ b/drivers/gpio/gpio-ds4520.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2023 Analog Devices, Inc. + * Driver for the DS4520 I/O Expander + */ + +#include +#include +#include +#include +#include + +#define NUMBER_OF_GPIO 9 + +#define PULLUP0 0xF0 +#define IO_CONTROL0 0xF2 +#define IO_STATUS0 0xF8 + +static const struct regmap_config ds4520_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int ds4520_gpio_probe(struct i2c_client *client) +{ + struct gpio_regmap_config config = {0}; + struct device *dev = &client->dev; + struct regmap *regmap; + u32 ngpio; + u32 base; + int ret; + + ngpio = NUMBER_OF_GPIO; + + ret = device_property_read_u32(dev, "reg", &base); + if (ret) + return -EINVAL; + regmap = devm_regmap_init_i2c(client, &ds4520_regmap_config); + if (IS_ERR(regmap)) { + ret = PTR_ERR(regmap); + dev_err_probe(dev, ret, + "Failed to allocate register map\n"); + return ret; + } + + config.regmap = regmap; + config.parent = dev; + config.ngpio = ngpio; + + config.reg_dat_base = base + IO_STATUS0; + config.reg_set_base = base + PULLUP0; + config.reg_dir_out_base = base + IO_CONTROL0; + + return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(dev, &config)); +} + +static const struct of_device_id ds4520_gpio_of_match_table[] = { + { + .compatible = "adi,ds4520-gpio" + }, + { } +}; +MODULE_DEVICE_TABLE(of, ds4520_gpio_of_match_table); + +static const struct i2c_device_id ds4520_gpio_id_table[] = { + { "ds4520-gpio" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ds4520_gpio_id_table); + +static struct i2c_driver ds4520_gpio_driver = { + .driver = { + .name = "ds4520-gpio", + .of_match_table = ds4520_gpio_of_match_table, + }, + .probe_new = ds4520_gpio_probe, + .id_table = ds4520_gpio_id_table, +}; +module_i2c_driver(ds4520_gpio_driver); + +MODULE_DESCRIPTION("DS4520 I/O Expander"); +MODULE_AUTHOR("Okan Sahin "); +MODULE_LICENSE("GPL");