From patchwork Thu Nov 3 21:34:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naresh Solanki X-Patchwork-Id: 621155 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 D38FEC4332F for ; Thu, 3 Nov 2022 21:34:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231244AbiKCVed (ORCPT ); Thu, 3 Nov 2022 17:34:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231238AbiKCVec (ORCPT ); Thu, 3 Nov 2022 17:34:32 -0400 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ACA3B6415 for ; Thu, 3 Nov 2022 14:34:31 -0700 (PDT) Received: by mail-wr1-x432.google.com with SMTP id o4so4624384wrq.6 for ; Thu, 03 Nov 2022 14:34:31 -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=P/4+eXF8HpUTTm4kFgWKs+phL3AAN+t5ZDemm/5nRcY=; b=PrW+5YO0RqZuycpkoGoR7au2Gky5LVucJ5S5PjQpqvNXOEHXW3Xz+AxA5e9sVmISrj WJaLy6Rsp++C+JwD8FTp4eGzx1ZHUp2x1LhgtGcAkENl5QQXWCKkqVP1OcbgosQIS4va VOT5K0tWFR3HQ1lHW7tp4E7aAgj+twVdE2AlCC8fnxBVdHeVlekowm+KS9ZG6cIIbCE0 wAnPRymqoyEWpwgh24cbvV3M9mXDDPmgjapfZ8chkG1FTXDkbW9oUqSdLbSiZ2unHQBI BWFKUk2PqVAQTfNoLkt39zBHbs6j0WcFDeR6tt5P9qO74om9SNfPvggN7+uvhZ9v89Z4 2RyA== 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=P/4+eXF8HpUTTm4kFgWKs+phL3AAN+t5ZDemm/5nRcY=; b=zk6u3Qo5VF2IbXfFHdHm6QRo3rM/SdY5wbj8CEPOQmM5R9fEabl4noXIriVDKsNyG7 Gxbgq5yxckmb9hGCqh+gfI9EsfhIMP4xd+Hf21FQLqKOIUCOOJ1V6qYHPmFGqKzY2XCr JlRY9dt3tbRaYMm9Dj/vPoHgWwCvAdEEuZm89UtXDl8Wdl38kKjaF2TDTvh0DobpbOVr 3ZNhVzm3NgJiWDA54hVOOgcHplRwhw+nwU/tJ+SQbpgtfTQzr+sLolDz0Mpl9xfFRKC9 QfIIiXSq24rKFk1MbX8eAr1K273RPeKJqVbhzZ3+6HQBrH8yOhdhpO/FG9U9IUqW24h0 s9gQ== X-Gm-Message-State: ACrzQf0KyLjfqIZrZ+qkgtZOTSUAILInIDScldnBHR9/fDnS+5LPy3q9 3oVEVhGf0AhiHg50WeP4bNfh8A== X-Google-Smtp-Source: AMsMyM7D4lkmsOJ8neYB3b1pQuPm4VYuEleyUd61sV9Kt3mtr2AzjuQ99iRjK/K7FtF/sI8cEhPvOA== X-Received: by 2002:adf:ec0b:0:b0:236:d76e:273f with SMTP id x11-20020adfec0b000000b00236d76e273fmr14078688wrn.179.1667511270177; Thu, 03 Nov 2022 14:34:30 -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 bq7-20020a5d5a07000000b0022e035a4e93sm1757027wrb.87.2022.11.03.14.34.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Nov 2022 14:34:29 -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 v8 1/2] dt-bindings: mfd: Add bindings for MAX5970 and MAX5978 Date: Thu, 3 Nov 2022 22:34:24 +0100 Message-Id: <20221103213425.2474772-2-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221103213425.2474772-1-Naresh.Solanki@9elements.com> References: <20221103213425.2474772-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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 | 170 ++++++++++++++++++ 1 file changed, 170 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/maxim,max5970.yaml diff --git a/Documentation/devicetree/bindings/mfd/maxim,max5970.yaml b/Documentation/devicetree/bindings/mfd/maxim,max5970.yaml new file mode 100644 index 000000000000..25079c518f68 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/maxim,max5970.yaml @@ -0,0 +1,170 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/maxim,max5970.yaml# +$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 protection + 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. + + properties: + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + patternProperties: + "^led@[0-3]$": + $ref: /schemas/leds/common.yaml# + type: object + + additionalProperties: false + + vss1-supply: + description: Supply of the first channel. + + vss2-supply: + description: Supply of the first channel. + + "#io-channel-cells": + const: 1 + + regulators: + type: object + description: + Properties for single channel. + + patternProperties: + "^(SW[0-1])$": + $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: false + +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 = <1>; + #size-cells = <0>; + regulator@3a { + compatible = "maxim,max5978"; + reg = <0x3a>; + vss1-supply = <&p3v3>; + + regulators { + sw0_ref_0: SW0 { + regulator-compatible = "SW0"; + shunt-resistor-micro-ohms = <12000>; + }; + }; + + leds { + #address-cells = <1>; + #size-cells = <0>; + led@0 { + reg = <0>; + label = "led0"; + default-state = "on"; + }; + led@1 { + reg = <1>; + label = "led1"; + default-state = "on"; + }; + }; + }; + }; + + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + regulator@3a { + compatible = "maxim,max5970"; + reg = <0x3a>; + vss1-supply = <&p3v3>; + vss2-supply = <&p5v>; + + regulators { + sw0_ref_1: SW0 { + regulator-compatible = "SW0"; + shunt-resistor-micro-ohms = <12000>; + }; + sw1_ref_1: SW1 { + regulator-compatible = "SW1"; + shunt-resistor-micro-ohms = <10000>; + }; + }; + }; + }; +... From patchwork Thu Nov 3 21:34:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naresh Solanki X-Patchwork-Id: 621154 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 A370BC433FE for ; Thu, 3 Nov 2022 21:34:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231542AbiKCVem (ORCPT ); Thu, 3 Nov 2022 17:34:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231324AbiKCVee (ORCPT ); Thu, 3 Nov 2022 17:34:34 -0400 Received: from mail-wr1-x42f.google.com (mail-wr1-x42f.google.com [IPv6:2a00:1450:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7152CE5 for ; Thu, 3 Nov 2022 14:34:32 -0700 (PDT) Received: by mail-wr1-x42f.google.com with SMTP id g12so4582455wrs.10 for ; Thu, 03 Nov 2022 14:34:32 -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=gQq8sLmEkIeltkSpm4pd+eT7NfXL9x7/lLuF/cuoFjUeC63lxS9Vvr77CZqLdseth/ HVzKpQL5MgFfOt/jDIlFToPoq1I9HIZefHxdkYa953KONAdlNkBLEW5hleSoZaDhNuiu QbjxN1YyTgYqUzjrwJEqGsaatj8N0Hi9E1EQJULixH/6lvcnwIUMFHtT7M4a+ov/mFF1 JXLUMyCTGQd5GAi2nqUd6ds+MB7lpXrCJvD9heEkPHI7SlBz8xIfdN3XdtKLRCgWzehX MnfEoFg33ba7/ILHZsGaZVeRyExVbZpenhfCgxEHJJVeMMSdjDV7XE9FSVU0jKAuCouU uHSw== 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=Dr53T0SMt11jwSDfpulQjbximGhrOLbValrRikF+LcIUjavjv+vgftTvH6RrLDfzL7 i+FeFscBMfOEQHgWm7kNZpRNbVDY37ZU6H4eEZSga11bLSeUB4aRZSGdQK8H1Bl65ecH knHwF9efkWWxNq52ahu+Qu1t+AcaUKJrJLFNgAiXFTjGBk7j5I0w0zEgcxhSvQWPWMKy jaPtP4x2w05F0gjh1OjdLcDyeNGKw/aL4ZpCLIDhmgacuUgyuUxMvJS8oCOT78l22P8u SovZi6V3CgkIW7xNvDjwEEvVLtQT+ghdpMrXetnvX10iCOPvJp6KgQAn7gXYTdNEM9MM 8mnw== X-Gm-Message-State: ACrzQf1BUl44m/2UUTc8r1KI6l39rK5D031YJQ4diVQRKbsebzohNNYF k91m9GLSV3i8P86bwjkLSYxd+w== X-Google-Smtp-Source: AMsMyM5tl9mFED8bp5/G8PfTUFr87Y8g0uGLp6Lf8kS2qKJ4ZjP4PNve1AN6AQRUjihQL+8wazNYRQ== X-Received: by 2002:a5d:49d0:0:b0:236:ba53:ec39 with SMTP id t16-20020a5d49d0000000b00236ba53ec39mr18606719wrs.412.1667511271167; Thu, 03 Nov 2022 14:34:31 -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 bq7-20020a5d5a07000000b0022e035a4e93sm1757027wrb.87.2022.11.03.14.34.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Nov 2022 14:34:30 -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 v8 2/2] mfd: max597x: Add support for MAX5970 and MAX5978 Date: Thu, 3 Nov 2022 22:34:25 +0100 Message-Id: <20221103213425.2474772-3-Naresh.Solanki@9elements.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221103213425.2474772-1-Naresh.Solanki@9elements.com> References: <20221103213425.2474772-1-Naresh.Solanki@9elements.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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. +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) += da9063.o obj-$(CONFIG_MFD_DA9150) += da9150-core.o obj-$(CONFIG_MFD_MAX14577) += max14577.o +obj-$(CONFIG_MFD_MAX597X) += max597x.o obj-$(CONFIG_MFD_MAX77620) += max77620.o obj-$(CONFIG_MFD_MAX77650) += max77650.o obj-$(CONFIG_MFD_MAX77686) += 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 = { + .reg_bits = 8, + .val_bits = 8, + .max_register = MAX_REGISTERS, +}; + +static const struct mfd_cell max597x_cells[] = { + { .name = "max597x-regulator", }, + { .name = "max597x-iio", }, + { .name = "max597x-led", }, +}; + +static int max597x_probe(struct i2c_client *i2c, const struct i2c_device_id *id) +{ + struct max597x_data *ddata; + enum max597x_chip_type chip = id->driver_data; + + ddata = 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 = MAX5970_NUM_SWITCHES; + break; + case MAX597x_TYPE_MAX5978: + ddata->num_switches = MAX5978_NUM_SWITCHES; + break; + } + + ddata->regmap = 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 = i2c->irq; + ddata->dev = &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[] = { + { .name = "max5970", MAX597x_TYPE_MAX5970 }, + { .name = "max5978", MAX597x_TYPE_MAX5978 }, +}; + +MODULE_DEVICE_TABLE(i2c, max597x_table); + +static const struct of_device_id max597x_of_match[] = { + { .compatible = "maxim,max5970", .data = (void *)MAX597x_TYPE_MAX5970 }, + { .compatible = "maxim,max5978", .data = (void *)MAX597x_TYPE_MAX5978 }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, max597x_of_match); + +static struct i2c_driver max597x_driver = { + .id_table = max597x_table, + .driver = { + .name = "max597x", + .of_match_table = of_match_ptr(max597x_of_match), + }, + .probe = 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 = 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 */