From nobody Thu Apr 9 06:20:19 2026 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 C7CABC4332F for ; Thu, 3 Nov 2022 08:06:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230315AbiKCIGG (ORCPT ); Thu, 3 Nov 2022 04:06:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231378AbiKCIFy (ORCPT ); Thu, 3 Nov 2022 04:05:54 -0400 Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B0CA6331 for ; Thu, 3 Nov 2022 01:05:53 -0700 (PDT) Received: by mail-wm1-x335.google.com with SMTP id v124-20020a1cac82000000b003cf7a4ea2caso2733259wme.5 for ; Thu, 03 Nov 2022 01:05:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=9elements.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=MZ0nurQiHwcmABVhZQ6fsJaRCHN3DbbSn9QOwvJTur8=; b=O2CjI+o8KTh80XPnG2VKHVxJIg75vzxuPVm3sbmGlo09EzKo+m6cjOyCMDk4R9lNza 5xPQL+fVPHViwqpjpQTyKUPr+idUmO/lXCG3p4tYp7byU4BDo5AuvnlMZnkmup/AwO7/ HLMmvA0x9GvKRlMsLOvubLxNlsSoeWr+1jI3964RIoabC+6QNQxWVRDFa04ODAU8EPdE 0I0qhJEQ779aZT+xOcmjXY9mXg8GoA4aDzF5XGAIMZ9hYPIPI5f4ZcBjY32r99u+ZcrS PGf6jLPkxSjWkp9iMVen1faZYJaaA6r3Sqyc3ZNWdyJ6M133AONBUVc4RGBgd7BWuIUU O56g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=MZ0nurQiHwcmABVhZQ6fsJaRCHN3DbbSn9QOwvJTur8=; b=cWvByaB9esW7vvoRTSwwCJXVsP3kfbqQc5HWK4mOf7eYEFzkOsFMZyLqvDSYMEWNI6 ZsN+pdtvoLPmT9f/492OxM+y0MqdkSt/kdFBRvsSOfsBTF4sX/FE8l27H6V2y8mqwhYI JIQy8GlIf2cC+Xnam3z40X4tFPlsq3KQavmbSJ+xRIrFJl7xhsfvEZCsrTkztbLltmSi jAMTFgzJzR4dKpf0hFUfcHbReTMYJT/ZPNPP3gcs+WG0LIPUNm/H56jJRnFDnzdvSaFp PRa6tHRiiHonC+bjckDGIqlBxuaj+R6yhZvolHi8PpFvBVondZFpJfYGggetUAymn6gx mBeA== X-Gm-Message-State: ACrzQf2eU7KMs57SZVF6nOwR4O1t1YcuVhRx4hGmPomTACGI+ATJmSqm 3V9dKvamIclv/7who+EP439nTn4iu4o0JL/E X-Google-Smtp-Source: AMsMyM6XqZ59cL0KPhIZvQi5ku5wZXLvRYZaPrxQHSNLZUx5/twa0U1ZjJriiEJjqOts7pcx1S+2MA== X-Received: by 2002:a05:600c:474a:b0:3c8:3299:5ba9 with SMTP id w10-20020a05600c474a00b003c832995ba9mr18798400wmo.3.1667462751296; Thu, 03 Nov 2022 01:05:51 -0700 (PDT) Received: from stroh80.sec.9e.network (ip-078-094-000-051.um19.pools.vodafone-ip.de. [78.94.0.51]) by smtp.gmail.com with ESMTPSA id r9-20020a05600c424900b003bfaba19a8fsm402772wmm.35.2022.11.03.01.05.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Nov 2022 01:05:50 -0700 (PDT) From: Naresh Solanki X-Google-Original-From: Naresh Solanki To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Lee Jones , Rob Herring , Krzysztof Kozlowski , Patrick Rudolph Cc: Marcello Sylvester Bauer , Naresh Solanki Subject: [PATCH v6 1/2] dt-bindings: mfd: Add bindings for MAX5970 and MAX5978 Date: Thu, 3 Nov 2022 09:05:44 +0100 Message-Id: <20221103080545.1400424-2-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221103080545.1400424-1-Naresh.Solanki@9elements.com> References: <20221103080545.1400424-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Marcello Sylvester Bauer The MAX597x is a hot swap controller with configurable fault protection. It also has 10bit ADC for current & voltage measurements. Signed-off-by: Patrick Rudolph Signed-off-by: Marcello Sylvester Bauer Signed-off-by: Naresh Solanki --- .../bindings/mfd/maxim,max5970.yaml | 164 ++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/maxim,max5970.yaml diff --git a/Documentation/devicetree/bindings/mfd/maxim,max5970.yaml b/Doc= umentation/devicetree/bindings/mfd/maxim,max5970.yaml new file mode 100644 index 000000000000..fc9d6d3647b3 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/maxim,max5970.yaml @@ -0,0 +1,164 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/max5970.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Regulator for MAX5970 smart switch from Maxim Integrated. + +maintainers: + - Patrick Rudolph + +description: | + The smart switch provides no output regulation, but independent fault pr= otection + and voltage and current sensing. + Programming is done through I2C bus. + + Datasheets: + https://datasheets.maximintegrated.com/en/ds/MAX5970.pdf + https://datasheets.maximintegrated.com/en/ds/MAX5978.pdf + +properties: + compatible: + enum: + - maxim,max5970 + - maxim,max5978 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + leds: + type: object + description: + Properties for single channel. + + patternProperties: + "^led@[0-3]$": + $ref: /schemas/leds/common.yaml# + type: object + + additionalProperties: true + + vss1-supply: + description: Supply of the first channel. + + vss2-supply: + description: Supply of the first channel. + + "#io-channel-cells": + const: 1 + + regulators: + type: object + description: + Properties for single channel. + + patternProperties: + "^(sw[0-1])$": + $ref: /schemas/regulator/regulator.yaml# + type: object + + shunt-resistor-micro-ohms: + description: | + The value of curent sense resistor in microohms. + Must be specified for each channel. + + additionalProperties: true + +required: + - compatible + - reg + - regulators + - vss1-supply + + +allOf: + - if: + properties: + compatible: + enum: + - maxim,max5970 + then: + properties: + io-channels: + items: + - description: voltage first channel + - description: current first channel + - description: voltage second channel + - description: current second channel + description: | + Voltage and current for first and second channel. + required: + - vss2-supply + else: + properties: + io-channels: + items: + - description: voltage first channel + - description: current first channel + description: | + Voltage and current for first channel. + +additionalProperties: false + +examples: + - | + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + regulator@3a { + compatible =3D "maxim,max5978"; + reg =3D <0x3a>; + vss1-supply =3D <&p3v3>; + + regulators { + sw0_ref_0: SW0 { + regulator-compatible =3D "SW0"; + shunt-resistor-micro-ohms =3D <12000>; + }; + }; + + leds { + #address-cells =3D <1>; + #size-cells =3D <0>; + led@0 { + reg =3D <0>; + label =3D "led0"; + default-state =3D "on"; + }; + led@1 { + reg =3D <1>; + label =3D "led1"; + default-state =3D "on"; + }; + }; + }; + }; + + - | + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + regulator@3a { + compatible =3D "maxim,max5970"; + reg =3D <0x3a>; + vss1-supply =3D <&p3v3>; + vss2-supply =3D <&p5v>; + + regulators { + sw0_ref_1: SW0 { + regulator-compatible =3D "SW0"; + shunt-resistor-micro-ohms =3D <12000>; + }; + sw1_ref_1: SW1 { + regulator-compatible =3D "SW1"; + shunt-resistor-micro-ohms =3D <10000>; + }; + }; + }; + }; +... --=20 2.37.3 From nobody Thu Apr 9 06:20:19 2026 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 982CCC4332F for ; Thu, 3 Nov 2022 08:06:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230491AbiKCIGI (ORCPT ); Thu, 3 Nov 2022 04:06:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53960 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231391AbiKCIF4 (ORCPT ); Thu, 3 Nov 2022 04:05:56 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E89A6153 for ; Thu, 3 Nov 2022 01:05:54 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id v124-20020a1cac82000000b003cf7a4ea2caso2733282wme.5 for ; Thu, 03 Nov 2022 01:05:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=9elements.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=TC/S8fegbzAu0hQykhV2xCdnvqKdkE9Dz0YGKKQfFpI=; b=akVGZUU61tkL3+d0eI2jHwVoz0aMXsC+clYm9vjGyvOVSpQTDZEcLL8FSUZfA3h5Rl DerBiknwJn8L3H+67EsoWnUeod8AHBUWUMTjSqOJn3bkCaEhmJzLstJr/8Eu6bitq1Gg K20gXFpHchlwUXzNtTzNY+zLc9Yw7XrhC18a7kTdWbPjSH1kR18JfuRjWj/TU5qmoodI z8iOa96iNtsQge5JZR/0/5iEkVhZF0u+pJ3AZNSF82rqepSN9Vy9tv8ew5K5OBuI3FZj x1cxAAnl/B1DNJEKUFR6OgyK8lrLpbQeWEm4METazQjaVL9SgSSRjVXKUT3U839WeC26 8qYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=TC/S8fegbzAu0hQykhV2xCdnvqKdkE9Dz0YGKKQfFpI=; b=1IOrdzVHTw6YNbtFeTGsNgoq0pxIfdJrL9XBNHDg+tPBqq0S8IRr582Sbcrg689v7L FC5QND4lhkG3LjkHJeIjmMoNLy5f3ttvGjk82N0dzgYl6Wdh+v/odGa7aItRJaFRTiIG w/tK66Ls2M4/Q4+DGACysdqllKcMEyhJFbIqNhrdDvLcdy7jILuarX48LA6/NeY/RtOS F+4c3etSMAKYhqDg5idz/2esMIq8hkr0cxJXr2VNmIbTPmn34zFJQXWitDGknMUH7o0i YNFUbLbpAbb0XUT/WJo7XUdsWbcPbiZpFKz8V7GjV8IYBj5yFcxmwoZqhC8rMNHEBahK jNqw== X-Gm-Message-State: ACrzQf0W8/fCcdryeQoyfjvKoAOC0ZqfzHxNEF7Gh1JJyYaVj+8PaZKX 09ydv3M+QCW18PA4l4QagVjCTAuGhFeSHuY3 X-Google-Smtp-Source: AMsMyM6qKb2FAlAOgIK05X9wxgp2iCxbO4/SsS4qlPfLGV/Q2nCXMCHZtUtJW9GHiPlwkfS5L05SuA== X-Received: by 2002:a1c:f30d:0:b0:3c3:7c80:67f4 with SMTP id q13-20020a1cf30d000000b003c37c8067f4mr18399239wmq.86.1667462752375; Thu, 03 Nov 2022 01:05:52 -0700 (PDT) Received: from stroh80.sec.9e.network (ip-078-094-000-051.um19.pools.vodafone-ip.de. [78.94.0.51]) by smtp.gmail.com with ESMTPSA id r9-20020a05600c424900b003bfaba19a8fsm402772wmm.35.2022.11.03.01.05.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Nov 2022 01:05:52 -0700 (PDT) From: Naresh Solanki X-Google-Original-From: Naresh Solanki To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Lee Jones Cc: Patrick Rudolph , Marcello Sylvester Bauer , Naresh Solanki Subject: [PATCH v6 2/2] mfd: max597x: Add support for MAX5970 and MAX5978 Date: Thu, 3 Nov 2022 09:05:45 +0100 Message-Id: <20221103080545.1400424-3-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221103080545.1400424-1-Naresh.Solanki@9elements.com> References: <20221103080545.1400424-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Patrick Rudolph Implement a regulator driver with IRQ support for fault management. Written against documentation [1] and [2] and tested on real hardware. Every channel has its own regulator supplies nammed 'vss1-supply' and 'vss2-supply'. The regulator supply is used to determine the output voltage, as the smart switch provides no output regulation. The driver requires the 'shunt-resistor-micro-ohms' property to be present in Device Tree to properly calculate current related values. Datasheet links: 1: https://datasheets.maximintegrated.com/en/ds/MAX5970.pdf 2: https://datasheets.maximintegrated.com/en/ds/MAX5978.pdf Signed-off-by: Patrick Rudolph Signed-off-by: Marcello Sylvester Bauer Signed-off-by: Naresh Solanki --- drivers/mfd/Kconfig | 12 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/max597x.c | 92 ++++++++++++++++++++++++++++++++ include/linux/mfd/max597x.h | 103 ++++++++++++++++++++++++++++++++++++ 4 files changed, 208 insertions(+) create mode 100644 drivers/mfd/max597x.c create mode 100644 include/linux/mfd/max597x.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 8b93856de432..416fe7986b7b 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -253,6 +253,18 @@ config MFD_MADERA_SPI Support for the Cirrus Logic Madera platform audio SoC core functionality controlled via SPI. =20 +config MFD_MAX597X + tristate "Maxim 597x Power Switch and Monitor" + depends on I2C + depends on OF + select MFD_CORE + select REGMAP_I2C + help + This driver controls a Maxim 5970/5978 switch via I2C bus. + The MAX5970/5978 is a smart switch with no output regulation, but + fault protection and voltage and current monitoring capabilities. + Also it supports upto 4 indication LEDs. + config MFD_CS47L15 bool "Cirrus Logic CS47L15" select PINCTRL_CS47L15 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 7ed3ef4a698c..819d711fa748 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -161,6 +161,7 @@ obj-$(CONFIG_MFD_DA9063) +=3D da9063.o obj-$(CONFIG_MFD_DA9150) +=3D da9150-core.o =20 obj-$(CONFIG_MFD_MAX14577) +=3D max14577.o +obj-$(CONFIG_MFD_MAX597X) +=3D max597x.o obj-$(CONFIG_MFD_MAX77620) +=3D max77620.o obj-$(CONFIG_MFD_MAX77650) +=3D max77650.o obj-$(CONFIG_MFD_MAX77686) +=3D max77686.o diff --git a/drivers/mfd/max597x.c b/drivers/mfd/max597x.c new file mode 100644 index 000000000000..2c64edb6b6dd --- /dev/null +++ b/drivers/mfd/max597x.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Maxim MAX5970/MAX5978 MFD Driver + * + * Copyright (c) 2022 9elements GmbH + * + * Author: Patrick Rudolph + */ + +#include +#include +#include +#include + +static const struct regmap_config max597x_regmap_config =3D { + .reg_bits =3D 8, + .val_bits =3D 8, + .max_register =3D MAX_REGISTERS, +}; + +static const struct mfd_cell max597x_cells[] =3D { + { .name =3D "max597x-regulator", }, + { .name =3D "max597x-iio", }, + { .name =3D "max597x-led", }, +}; + +static int max597x_probe(struct i2c_client *i2c, const struct i2c_device_i= d *id) +{ + struct max597x_data *ddata; + enum max597x_chip_type chip =3D id->driver_data; + + ddata =3D devm_kzalloc(&i2c->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + /* Initialize num of switch based on chip type for later use by regulator + * & iio cells + */ + switch (chip) { + case MAX597x_TYPE_MAX5970: + ddata->num_switches =3D MAX5970_NUM_SWITCHES; + break; + case MAX597x_TYPE_MAX5978: + ddata->num_switches =3D MAX5978_NUM_SWITCHES; + break; + } + + ddata->regmap =3D devm_regmap_init_i2c(i2c, &max597x_regmap_config); + if (IS_ERR(ddata->regmap)) { + dev_err(&i2c->dev, "Failed to initialise regmap"); + return -EINVAL; + } + + /* IRQ used by regulator cell */ + ddata->irq =3D i2c->irq; + ddata->dev =3D &i2c->dev; + i2c_set_clientdata(i2c, ddata); + + return devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, + max597x_cells, ARRAY_SIZE(max597x_cells), + NULL, 0, NULL); +} + +static const struct i2c_device_id max597x_table[] =3D { + { .name =3D "max5970", MAX597x_TYPE_MAX5970 }, + { .name =3D "max5978", MAX597x_TYPE_MAX5978 }, +}; + +MODULE_DEVICE_TABLE(i2c, max597x_table); + +static const struct of_device_id max597x_of_match[] =3D { + { .compatible =3D "maxim,max5970", .data =3D (void *)MAX597x_TYPE_MAX5970= }, + { .compatible =3D "maxim,max5978", .data =3D (void *)MAX597x_TYPE_MAX5978= }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, max597x_of_match); + +static struct i2c_driver max597x_driver =3D { + .id_table =3D max597x_table, + .driver =3D { + .name =3D "max597x", + .of_match_table =3D of_match_ptr(max597x_of_match), + }, + .probe =3D max597x_probe, +}; + +module_i2c_driver(max597x_driver); + +MODULE_AUTHOR("Patrick Rudolph "); +MODULE_DESCRIPTION("MAX597X Power Switch and Monitor"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/max597x.h b/include/linux/mfd/max597x.h new file mode 100644 index 000000000000..f88a57f0e4f2 --- /dev/null +++ b/include/linux/mfd/max597x.h @@ -0,0 +1,103 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Maxim MAX5970/MAX5978 MFD Driver + * + * Copyright (c) 2022 9elements GmbH + * + * Author: Patrick Rudolph + */ + +#ifndef MFD_MAX597X_H +#define MFD_MAX597X_H + +#include +#include + +/* Number of switch based on chip variant */ +#define MAX5970_NUM_SWITCHES 2 +#define MAX5978_NUM_SWITCHES 1 +/* Both chip variant have 4 indication LEDs used by LED cell */ +#define MAX597X_NUM_LEDS 4 + +enum max597x_chip_type { + MAX597x_TYPE_MAX5978 =3D 1, + MAX597x_TYPE_MAX5970, +}; + +#define MAX5970_REG_CURRENT_L(ch) (0x01 + (ch) * 4) +#define MAX5970_REG_CURRENT_H(ch) (0x00 + (ch) * 4) +#define MAX5970_REG_VOLTAGE_L(ch) (0x03 + (ch) * 4) +#define MAX5970_REG_VOLTAGE_H(ch) (0x02 + (ch) * 4) +#define MAX5970_REG_MON_RANGE 0x18 +#define MAX5970_MON_MASK 0x3 +#define MAX5970_MON(reg, ch) (((reg) >> ((ch) * 2)) & MAX5970_MON_MASK) +#define MAX5970_MON_MAX_RANGE_UV 16000000 + +#define MAX5970_REG_CH_UV_WARN_H(ch) (0x1A + (ch) * 10) +#define MAX5970_REG_CH_UV_WARN_L(ch) (0x1B + (ch) * 10) +#define MAX5970_REG_CH_UV_CRIT_H(ch) (0x1C + (ch) * 10) +#define MAX5970_REG_CH_UV_CRIT_L(ch) (0x1D + (ch) * 10) +#define MAX5970_REG_CH_OV_WARN_H(ch) (0x1E + (ch) * 10) +#define MAX5970_REG_CH_OV_WARN_L(ch) (0x1F + (ch) * 10) +#define MAX5970_REG_CH_OV_CRIT_H(ch) (0x20 + (ch) * 10) +#define MAX5970_REG_CH_OV_CRIT_L(ch) (0x21 + (ch) * 10) + +#define MAX5970_VAL2REG_H(x) (((x) >> 2) & 0xFF) +#define MAX5970_VAL2REG_L(x) ((x) & 0x3) + +#define MAX5970_REG_DAC_FAST(ch) (0x2E + (ch)) + +#define MAX5970_FAST2SLOW_RATIO 200 + +#define MAX5970_REG_STATUS0 0x31 +#define MAX5970_CB_IFAULTF(ch) (1 << (ch)) +#define MAX5970_CB_IFAULTS(ch) (1 << ((ch) + 4)) + +#define MAX5970_REG_STATUS1 0x32 +#define STATUS1_PROT_MASK 0x3 +#define STATUS1_PROT(reg) \ + (((reg) >> 6) & STATUS1_PROT_MASK) +#define STATUS1_PROT_SHUTDOWN 0 +#define STATUS1_PROT_CLEAR_PG 1 +#define STATUS1_PROT_ALERT_ONLY 2 + +#define MAX5970_REG_STATUS2 0x33 +#define MAX5970_IRNG_MASK 0x3 +#define MAX5970_IRNG(reg, ch) \ + (((reg) >> ((ch) * 2)) & MAX5970_IRNG_MASK) + +#define MAX5970_REG_STATUS3 0x34 +#define MAX5970_STATUS3_ALERT BIT(4) +#define MAX5970_STATUS3_PG(ch) BIT(ch) + +#define MAX5970_REG_FAULT0 0x35 +#define UV_STATUS_WARN(ch) BIT(ch) +#define UV_STATUS_CRIT(ch) BIT(ch + 4) + +#define MAX5970_REG_FAULT1 0x36 +#define OV_STATUS_WARN(ch) BIT(ch) +#define OV_STATUS_CRIT(ch) BIT(ch + 4) + +#define MAX5970_REG_FAULT2 0x37 +#define OC_STATUS_WARN(ch) BIT(ch) + +#define MAX5970_REG_CHXEN 0x3b +#define CHXEN(ch) (3 << (ch * 2)) + +#define MAX5970_REG_LED_FLASH 0x43 + +#define MAX_REGISTERS 0x49 +#define ADC_MASK 0x3FF + +struct max597x_data { + struct device *dev; + int irq; + int num_switches; + struct regmap *regmap; + /* Chip specific parameters needed by regulator & iio cells */ + u32 irng[MAX5970_NUM_SWITCHES]; + u32 mon_rng[MAX5970_NUM_SWITCHES]; + u32 shunt_micro_ohms[MAX5970_NUM_SWITCHES]; +}; + +#endif /* _MAX597X_H */ --=20 2.37.3