From nobody Tue Sep 9 01:20:01 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3083C001E0 for ; Mon, 24 Jul 2023 06:36:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229550AbjGXGgG (ORCPT ); Mon, 24 Jul 2023 02:36:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230259AbjGXGf6 (ORCPT ); Mon, 24 Jul 2023 02:35:58 -0400 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 72BB410FD; Sun, 23 Jul 2023 23:35:23 -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 36O3aO8G028655; Mon, 24 Jul 2023 02:34:51 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3s08y5hn0u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 02:34:51 -0400 Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 36O6Yn1u027310 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 24 Jul 2023 02:34:50 -0400 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) 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, 24 Jul 2023 02:34:49 -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, 24 Jul 2023 02:34:48 -0400 Received: from okan.localdomain (IST-LT-43126.ad.analog.com [10.25.36.11]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 36O6YSOK029336; Mon, 24 Jul 2023 02:34:40 -0400 From: Okan Sahin To: CC: Krzysztof Kozlowski , Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , , , Subject: [PATCH v3 1/2] dt-bindings: gpio: ds4520: Add ADI DS4520 Date: Mon, 24 Jul 2023 09:34:13 +0300 Message-ID: <20230724063414.102805-2-okan.sahin@analog.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230724063414.102805-1-okan.sahin@analog.com> References: <20230724063414.102805-1-okan.sahin@analog.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: M1uH2Aphuxs-jdSK1KDcbSpP17hoFDLq X-Proofpoint-GUID: M1uH2Aphuxs-jdSK1KDcbSpP17hoFDLq 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=2023-07-24_04,2023-07-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 bulkscore=0 clxscore=1011 spamscore=0 adultscore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307240060 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 =3D <1>; + #size-cells =3D <0>; + + gpio@50 { + compatible =3D "adi,ds4520-gpio"; + reg =3D <0x50>; + ngpios =3D <9>; + gpio-controller; + #gpio-cells =3D <2>; + }; + }; --=20 2.30.2 From nobody Tue Sep 9 01:20:01 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8B01C001B0 for ; Mon, 24 Jul 2023 06:36:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230151AbjGXGgV (ORCPT ); Mon, 24 Jul 2023 02:36:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60070 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230259AbjGXGgL (ORCPT ); Mon, 24 Jul 2023 02:36:11 -0400 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 190E9107; Sun, 23 Jul 2023 23:35:46 -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 36O3F1gV028642; Mon, 24 Jul 2023 02:34:56 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3s08y5hn19-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 02:34:55 -0400 Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 36O6YskP027320 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 24 Jul 2023 02:34:54 -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, 24 Jul 2023 02:34:53 -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, 24 Jul 2023 02:34:53 -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, 24 Jul 2023 02:34:53 -0400 Received: from okan.localdomain (IST-LT-43126.ad.analog.com [10.25.36.11]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 36O6YSOL029336; Mon, 24 Jul 2023 02:34:45 -0400 From: Okan Sahin To: CC: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , , , Subject: [PATCH v3 2/2] gpio: ds4520: Add ADI DS4520 GPIO Expander Support Date: Mon, 24 Jul 2023 09:34:14 +0300 Message-ID: <20230724063414.102805-3-okan.sahin@analog.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230724063414.102805-1-okan.sahin@analog.com> References: <20230724063414.102805-1-okan.sahin@analog.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-ORIG-GUID: 3L-5zvWyWvZjggp42dYT5djnyB5PTgKW X-Proofpoint-GUID: 3L-5zvWyWvZjggp42dYT5djnyB5PTgKW 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=2023-07-24_04,2023-07-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 suspectscore=0 mlxlogscore=856 bulkscore=0 clxscore=1015 spamscore=0 adultscore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307240060 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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). =20 +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-$(CONFIG_GPIO_DA9052) +=3D gpio-da9052.o obj-$(CONFIG_GPIO_DA9055) +=3D gpio-da9055.o obj-$(CONFIG_GPIO_DAVINCI) +=3D gpio-davinci.o obj-$(CONFIG_GPIO_DLN2) +=3D gpio-dln2.o +obj-$(CONFIG_GPIO_DS4520) +=3D gpio-ds4520.o obj-$(CONFIG_GPIO_DWAPB) +=3D gpio-dwapb.o obj-$(CONFIG_GPIO_EIC_SPRD) +=3D gpio-eic-sprd.o obj-$(CONFIG_GPIO_EM) +=3D gpio-em.o diff --git a/drivers/gpio/gpio-ds4520.c b/drivers/gpio/gpio-ds4520.c new file mode 100644 index 000000000000..577ffb4b8c50 --- /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 =3D { + .reg_bits =3D 8, + .val_bits =3D 8, +}; + +static int ds4520_gpio_probe(struct i2c_client *client) +{ + struct gpio_regmap_config config =3D { }; + struct device *dev =3D &client->dev; + struct regmap *regmap; + u32 ngpio; + u32 base; + int ret; + + ret =3D device_property_read_u32(dev, "reg", &base); + if (ret) { + dev_err_probe(dev, ret, + "Missing 'reg' property.\n"); + return -EINVAL; + } + ret =3D device_property_read_u32(dev, "ngpios", &ngpio); + if (ret) { + dev_err_probe(dev, ret, + "Missing 'ngpios' property.\n"); + return -EINVAL; + } + regmap =3D devm_regmap_init_i2c(client, &ds4520_regmap_config); + if (IS_ERR(regmap)) { + ret =3D PTR_ERR(regmap); + dev_err_probe(dev, ret, + "Failed to allocate register map\n"); + return ret; + } + + config.regmap =3D regmap; + config.parent =3D dev; + config.ngpio =3D ngpio; + + config.reg_dat_base =3D base + DS4520_IO_STATUS0; + config.reg_set_base =3D base + DS4520_PULLUP0; + config.reg_dir_out_base =3D 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[] =3D { + { + .compatible =3D "adi,ds4520-gpio" + }, + { } +}; +MODULE_DEVICE_TABLE(of, ds4520_gpio_of_match_table); + +static const struct i2c_device_id ds4520_gpio_id_table[] =3D { + { "ds4520-gpio" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ds4520_gpio_id_table); + +static struct i2c_driver ds4520_gpio_driver =3D { + .driver =3D { + .name =3D "ds4520-gpio", + .of_match_table =3D ds4520_gpio_of_match_table, + }, + .probe_new =3D ds4520_gpio_probe, + .id_table =3D ds4520_gpio_id_table, +}; +module_i2c_driver(ds4520_gpio_driver); + +MODULE_DESCRIPTION("DS4520 I/O Expander"); +MODULE_AUTHOR("Okan Sahin "); +MODULE_LICENSE("GPL"); --=20 2.30.2