From patchwork Thu Jul 27 08:52:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sahin, Okan" X-Patchwork-Id: 126871 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:a985:0:b0:3e4:2afc:c1 with SMTP id t5csp979440vqo; Thu, 27 Jul 2023 02:50:08 -0700 (PDT) X-Google-Smtp-Source: APBJJlFcnQFZzbtJbW0PmFo7GqfmcwH334o+LpZ+nmcjd8wdMNUqKQc1SSNimM6BnbQYC/MqtRaT X-Received: by 2002:a17:902:ec8c:b0:1ab:11c8:777a with SMTP id x12-20020a170902ec8c00b001ab11c8777amr5829500plg.13.1690451408458; Thu, 27 Jul 2023 02:50:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1690451408; cv=none; d=google.com; s=arc-20160816; b=dnrkwSuryu33/8uo4fnxEejOF0vjImcZbapDOceksJMjJlN1nKn/7c0UmyEFUQPdRg opFFrMqS+E8tujvYoj3TWOrQjiO8sZTyq5vDqNaz1zV0iA1iNZOcrXDMqCbWGGfa8jSY IR9wEKgz8QDt0yLFf6FAQXtEvXCbsm+fJLnGHq5AAunmSxnJaJep8pB7C9EkMOCw0aPo /m7y/5u9UhxKNuucQIhAvw1uH6LEYDwlZXvmfFA1GaWrfdEA0ZMp3S2pmfVvp3pzbWGz Ey59WwihOXpGdj2HLLucliuMDk3Q+4jAIRNkk4hSdzo1pLPGU9frjullp6bx3li+zWqK x6SA== 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=OWf3/QzbjNXxOh6EJkYmwO/B1tfWOAEuGApnIWArWOA=; fh=d/0EcIKwGwtM9dTfl/zL4aGsiVBeIP6TkXcWEpoznfs=; b=R5C4OxR1qYcdr7B//IiYLx01OtcCGJj/MzdBUDl5QglY/XbtgYZsJgPdCyW3jjiqLP Dna1uq9ndTJqi/NHOTOK4fKAbLppNlW2EH88luGjT83eqSDvs1mM8UiC7frSFoA8DsGm 3HQcWr4hvgOb/M64wlXf19MAfjv/JuyucZtZaRgM8PwuwytnCGk217oaE3aHTmm5kv+H iQ5DoGLgYhvb8KIX+WmUJkVnx97PQvvAGzq4DHFL2bbplo6zaCs5be1uRjp97Cb/cO3V VF1CUhdPqE5HN9sA+DDd8jVOwoLmD9K1mbMEwl5ztrYJbuV0Ry9ZuquwTxIsrOMpDrnb HmFQ== 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 lk3-20020a17090308c300b001b9e29fe870si1110261plb.62.2023.07.27.02.49.55; Thu, 27 Jul 2023 02:50:08 -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 S233632AbjG0JJz (ORCPT + 99 others); Thu, 27 Jul 2023 05:09:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232815AbjG0JJU (ORCPT ); Thu, 27 Jul 2023 05:09:20 -0400 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAFAB5BBF; Thu, 27 Jul 2023 01:53:16 -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 36R76KNu027855; Thu, 27 Jul 2023 04:53:12 -0400 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3s36afn5x8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Jul 2023 04:53:12 -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 36R8rBsx025592 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 27 Jul 2023 04:53:11 -0400 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) 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; Thu, 27 Jul 2023 04:53:10 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Thu, 27 Jul 2023 04:53:10 -0400 Received: from okan.localdomain ([10.158.19.61]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 36R8qn6r026993; Thu, 27 Jul 2023 04:53:03 -0400 From: Okan Sahin To: CC: Krzysztof Kozlowski , Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , , , Subject: [PATCH v4 1/2] dt-bindings: gpio: ds4520: Add ADI DS4520 Date: Thu, 27 Jul 2023 11:52:37 +0300 Message-ID: <20230727085239.4326-2-okan.sahin@analog.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230727085239.4326-1-okan.sahin@analog.com> References: <20230727085239.4326-1-okan.sahin@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: -0OCd5Ec3amyyqGQNyfrdMDE1Eey4xT0 X-Proofpoint-ORIG-GUID: -0OCd5Ec3amyyqGQNyfrdMDE1Eey4xT0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-26_08,2023-07-26_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 phishscore=0 suspectscore=0 mlxscore=0 bulkscore=0 mlxlogscore=999 clxscore=1015 spamscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307270078 X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW, 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: INBOX X-GMAIL-THRID: 1772566776295084803 X-GMAIL-MSGID: 1772566776295084803 Add ADI DS4520 devicetree document. Signed-off-by: Okan Sahin Reviewed-by: Krzysztof Kozlowski Reviewed-by: Linus Walleij --- .../bindings/gpio/adi,ds4520-gpio.yaml | 51 +++++++++++++++++++ 1 file changed, 51 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..25b3198c4d3e --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/adi,ds4520-gpio.yaml @@ -0,0 +1,51 @@ +# 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 + + ngpios: + minimum: 1 + maximum: 9 + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + - ngpios + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + gpio@50 { + compatible = "adi,ds4520-gpio"; + reg = <0x50>; + ngpios = <9>; + gpio-controller; + #gpio-cells = <2>; + }; + }; From patchwork Thu Jul 27 08:52:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sahin, Okan" X-Patchwork-Id: 126853 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:a985:0:b0:3e4:2afc:c1 with SMTP id t5csp968765vqo; Thu, 27 Jul 2023 02:24:37 -0700 (PDT) X-Google-Smtp-Source: APBJJlGWHATCTxW/fmuzTBUqG/qSfgeqS5Rfg6Orlh4oHkeW5d5dM5BUSRF58wYprpneROCthYhV X-Received: by 2002:a17:906:20d5:b0:997:e79c:99dc with SMTP id c21-20020a17090620d500b00997e79c99dcmr1662391ejc.74.1690449876722; Thu, 27 Jul 2023 02:24:36 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1690449876; cv=none; d=google.com; s=arc-20160816; b=qhKp6LGpBgpne3Q7027wYJewOX9ubQFc/PvcSgbKCM9dAPe1uOukZER0ShvVfUAtfY Zhsb/ZkPZrAOGclV30177BvA6ddQAqkuBs2o1MC7lsrq/JBmMkLWHD9l4c4/aWoQyhG9 w5C10/y2mzHYrwVPjQ4EJHfi0DK82b/qTRCuWkGRZmZOnQNRgvoswPBsNEAvgDgA5V6l ixUgn9hcCtP4NInTqHWGKpXKmlD9B8BkeJFmwrJnI+2PV8A6UvSqJ2FvBJLWtR5dz3yg hZBfgu+oF5DSNQcHcvZCIXuhvIJNLZTpqU13HOibbEq5+9oAE+PH7GwQshq8MC4hzhQ2 VsPQ== 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=/KKRUNUeRWknIF1JSsg2CCrsBYja1ReO4amtepW3oY8=; fh=P00EuBDF4XpJQsjM4AE1z3Sbx7B6QAr6ahKq5EmHWHA=; b=unxOGIbBBFczDnarEW9EectdUxdjP0urY+Bnc+TE9ceMi+R9nbdvzuvUY/q839+BiP Fn1etgdrJiyBkY/R0sqZeI2irf7n7poIiG7H9xBblHam5QObJAYpf1CLrDgNUHMFbl85 unKwvDLsHo6OzOTQpEjXy1rcz+VlwSbr/3TY3lHf2K527xbSNTzbqDA3fPmazMiXqS/f KdO8xKOGG5fWRjEYDnayTGpaQ5qynt0MfY9o5jsMmoe7vGmE441LmBgacfhZYH6j3cjL v/pzO/smAtrxBxN8DaitXbeYISSwAEolaZxuvN/qZBOnWsbbgXW3MK/CYG1rSLKTS6jY TfZQ== 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 oz2-20020a170906cd0200b0097650856f55si661029ejb.695.2023.07.27.02.24.12; Thu, 27 Jul 2023 02:24:36 -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 S233319AbjG0JKD (ORCPT + 99 others); Thu, 27 Jul 2023 05:10:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36042 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233077AbjG0JJV (ORCPT ); Thu, 27 Jul 2023 05:09:21 -0400 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47F395FC6; Thu, 27 Jul 2023 01:53:25 -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 36R74V6b027847; Thu, 27 Jul 2023 04:53:21 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3s36afn5xq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 27 Jul 2023 04:53:21 -0400 Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 36R8rKE1005784 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 27 Jul 2023 04:53:20 -0400 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Thu, 27 Jul 2023 04:53:19 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Thu, 27 Jul 2023 04:53:19 -0400 Received: from okan.localdomain ([10.158.19.61]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 36R8qn6s026993; Thu, 27 Jul 2023 04:53:09 -0400 From: Okan Sahin To: CC: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , , , Subject: [PATCH v4 2/2] gpio: ds4520: Add ADI DS4520 GPIO Expander Support Date: Thu, 27 Jul 2023 11:52:38 +0300 Message-ID: <20230727085239.4326-3-okan.sahin@analog.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230727085239.4326-1-okan.sahin@analog.com> References: <20230727085239.4326-1-okan.sahin@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: O1KQoexNbEz6LG8CwH80BPxnLlffTZ1U X-Proofpoint-ORIG-GUID: O1KQoexNbEz6LG8CwH80BPxnLlffTZ1U X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-26_08,2023-07-26_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 phishscore=0 suspectscore=0 mlxscore=0 bulkscore=0 mlxlogscore=859 clxscore=1015 spamscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307270078 X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW, 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: INBOX X-GMAIL-THRID: 1772565170148233004 X-GMAIL-MSGID: 1772565170148233004 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 | 89 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 101 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..0a9fdbfed6ee --- /dev/null +++ b/drivers/gpio/gpio-ds4520.c @@ -0,0 +1,89 @@ +// 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 +#include + +#define DS4520_PULLUP0 0xF0 +#define DS4520_IO_CONTROL0 0xF2 +#define DS4520_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 = { }; + struct device *dev = &client->dev; + struct regmap *regmap; + u32 ngpio; + u32 base; + int ret; + + ret = device_property_read_u32(dev, "reg", &base); + if (ret) { + dev_err_probe(dev, ret, + "Missing 'reg' property.\n"); + return -EINVAL; + } + + ret = device_property_read_u32(dev, "ngpios", &ngpio); + if (ret) { + dev_err_probe(dev, ret, + "Missing 'ngpios' property.\n"); + 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 + DS4520_IO_STATUS0; + config.reg_set_base = base + DS4520_PULLUP0; + config.reg_dir_out_base = base + DS4520_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");