From patchwork Wed Mar 10 13:08:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 397846 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51FC3C433E6 for ; Wed, 10 Mar 2021 13:09:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C9D964F9D for ; Wed, 10 Mar 2021 13:09:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232627AbhCJNJB (ORCPT ); Wed, 10 Mar 2021 08:09:01 -0500 Received: from mail-lf1-f51.google.com ([209.85.167.51]:46896 "EHLO mail-lf1-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232088AbhCJNId (ORCPT ); Wed, 10 Mar 2021 08:08:33 -0500 Received: by mail-lf1-f51.google.com with SMTP id r3so25155430lfc.13; Wed, 10 Mar 2021 05:08:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=IDSJEhR3nj5vbJCjgS5WrWjZtxX52Thgjco29XIGLgY=; b=JT8ejpoxgIz50uEJkFDHHBBgmZLtL58201nGKz7lZvn7BPHm1MXClOepL2hgwABjht fFYM1SwdZ6b8h/bmBcukQfqD2voQ+ij5CpwG/YVZAsN76tnEDpDFk6b1K8aAgT5h3w57 Ul0nQ+l1bQ1bH72ZAs3HfEUu9bbA++nUhQTERoSqcg7AUtbEVkFA8QFaJ2YSWHVgESdT MqutPH0lV0lLV1IFWyd7W/sO0Ta/54tqb/lxlCSVfoM7a6ifTFLuKa+JYXyjYUrpeQmy belXHU8t0DYs/bH8PQuJh6L8VIgohSJ3SwF2WIpr6ido78+1eeZ9jOI094KtmiAV68oQ NVkQ== X-Gm-Message-State: AOAM5315Cqa7dquYRIV83asLPVQ9V4uqlzMWJ6/FYY99uPNTv2nRdWoo 46nUezMqOEflK4ZlUcKm+6g= X-Google-Smtp-Source: ABdhPJwfQ0bt5y8RwlLFpXp+rNneUOk7FdAyE1c/hGg5LRZAlzot2uD8ixavdxwaSp3DLs+cK6wDew== X-Received: by 2002:a19:4147:: with SMTP id o68mr2161232lfa.295.1615381711228; Wed, 10 Mar 2021 05:08:31 -0800 (PST) Received: from localhost.localdomain (dc7vkhyyyyyyyyyyyyycy-3.rev.dnainternet.fi. [2001:14ba:16e2:8300::4]) by smtp.gmail.com with ESMTPSA id x31sm2934474lfu.10.2021.03.10.05.08.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Mar 2021 05:08:30 -0800 (PST) Date: Wed, 10 Mar 2021 15:08:24 +0200 From: Matti Vaittinen To: mazziesaccount@gmail.com, matti.vaittinen@fi.rohmeurope.com Cc: Liam Girdwood , Mark Brown , Rob Herring , Matti Vaittinen , Andy Gross , Bjorn Andersson , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-power@fi.rohmeurope.com, linux-arm-msm@vger.kernel.org Subject: [RFC PATCH v2 2/7] regulator: add warning flags Message-ID: <2a89e9208164b44b8179abe8719dc16100da4848.1615367099.git.matti.vaittinen@fi.rohmeurope.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add 'warning' level events and error flags to regulator core. Current regulator core notifications are used to inform consumers about errors where HW is misbehaving in such way it is assumed to be broken/unrecoverable. There are PMICs which are designed for system(s) that may have use for regulator indications sent before HW is damaged so that some board/consumer specific recovery-event can be performed while continuing most of the normal operations. Add new WARNING level events and notifications to be used for that purpose. Signed-off-by: Matti Vaittinen --- include/linux/regulator/consumer.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index 20e84a84fb77..f72ca73631be 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -119,6 +119,16 @@ struct regulator_dev; #define REGULATOR_EVENT_PRE_DISABLE 0x400 #define REGULATOR_EVENT_ABORT_DISABLE 0x800 #define REGULATOR_EVENT_ENABLE 0x1000 +/* + * Following notifications should be emitted only if detected condition + * is such that the HW is likely to still be working but consumers should + * take a recovery action to prevent problems esacalating into errors. + */ +#define REGULATOR_EVENT_UNDER_VOLTAGE_WARN 0x2000 +#define REGULATOR_EVENT_OVER_CURRENT_WARN 0x4000 +#define REGULATOR_EVENT_OVER_VOLTAGE_WARN 0x8000 +#define REGULATOR_EVENT_OVER_TEMP_WARN 0x10000 +#define REGULATOR_EVENT_WARN_MASK 0x1E000 /* * Regulator errors that can be queried using regulator_get_error_flags @@ -138,6 +148,10 @@ struct regulator_dev; #define REGULATOR_ERROR_FAIL BIT(4) #define REGULATOR_ERROR_OVER_TEMP BIT(5) +#define REGULATOR_ERROR_UNDER_VOLTAGE_WARN BIT(6) +#define REGULATOR_ERROR_OVER_CURRENT_WARN BIT(7) +#define REGULATOR_ERROR_OVER_VOLTAGE_WARN BIT(8) +#define REGULATOR_ERROR_OVER_TEMP_WARN BIT(9) /** * struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event