From patchwork Mon Apr 19 11:49:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 12211677 X-Patchwork-Delegate: geert@linux-m68k.org 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=ham 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 B2E8BC433ED for ; Mon, 19 Apr 2021 11:50:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 95F2D61166 for ; Mon, 19 Apr 2021 11:50:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238617AbhDSLub (ORCPT ); Mon, 19 Apr 2021 07:50:31 -0400 Received: from mail-lf1-f45.google.com ([209.85.167.45]:44759 "EHLO mail-lf1-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238879AbhDSLub (ORCPT ); Mon, 19 Apr 2021 07:50:31 -0400 Received: by mail-lf1-f45.google.com with SMTP id i10so19563839lfe.11; Mon, 19 Apr 2021 04:49:59 -0700 (PDT) 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=PF17I0NH3tYVAA1Iv/q8DPWO007JsrI/3wrjpR3VDTQ=; b=G3HV/M8M5F+pcvaJRkQvOIRVTPdwGH3F2kM8Xl+KEjzPO2kEa5X0w3Js91y1CmPWS+ yEJ77WaaX4JR9TMzJTGDcqF4awkrWgHTbE5uRwAmWwLE55ei6v2f0992nk9pC8w+sR63 m8wb/dIp2DaG5MmvS8CsV5TTnBHtpO046hrl1+o8AiQVWEdOAHhPSK0QaItdKYHJ34NE W0keYg1iFszk9YI+yiCyYVW8lNXORJelSaL/KfiO2TdzdXdScLfLIYSN34rv5PvgJUCg k3rBBm0DSKfkxtGIaMHzIzdjckik4OtwK5Kb4Y5h9B39/L9SOCCy3eJagpR23wenNDv7 WceQ== X-Gm-Message-State: AOAM530og4LLlPnCjfeIjLr7STqiD331sbscyU/JGdfP5xRbRRxsdcUH 0sDBXIj4luHCHGLs/AGe4ZY= X-Google-Smtp-Source: ABdhPJw2LdZwxyIVT/FHARbZCd64TVLOgAK93f/IhsfWYiRxJskvM21mc2X+ozY/W6Cd0LLOA7F1+A== X-Received: by 2002:a19:f241:: with SMTP id d1mr2742579lfk.26.1618832998670; Mon, 19 Apr 2021 04:49:58 -0700 (PDT) Received: from localhost.localdomain (dc7vkhyyyyyyyyyyyyydy-3.rev.dnainternet.fi. [2001:14ba:16e2:8300::6]) by smtp.gmail.com with ESMTPSA id a30sm1803727lfi.47.2021.04.19.04.49.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Apr 2021 04:49:58 -0700 (PDT) Date: Mon, 19 Apr 2021 14:49:52 +0300 From: Matti Vaittinen To: Matti Vaittinen , Matti Vaittinen Cc: Mark Brown , Kees Cook , Andy Shevchenko , Zhang Rui , Guenter Roeck , "agross@kernel.org" , "devicetree@vger.kernel.org" , linux-power , "linux-kernel@vger.kernel.org" , "linux-renesas-soc@vger.kernel.org" , "linux-arm-msm@vger.kernel.org" , "bjorn.andersson@linaro.org" , "lgirdwood@gmail.com" , "robh+dt@kernel.org" Subject: [PATCH v8 04/10] regulator: add warning flags Message-ID: <8085635fc4b6586ae41f7fa4a3cd1d3374bc9e6d.1618832466.git.matti.vaittinen@fi.rohmeurope.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@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 --- No changes since RFC-v2 --- 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