From patchwork Wed Apr 14 05:52:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 12201881 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 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 88B2CC433ED for ; Wed, 14 Apr 2021 05:53:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 68FD0611C9 for ; Wed, 14 Apr 2021 05:53:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347893AbhDNFx3 (ORCPT ); Wed, 14 Apr 2021 01:53:29 -0400 Received: from mail-lj1-f170.google.com ([209.85.208.170]:39899 "EHLO mail-lj1-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347801AbhDNFxP (ORCPT ); Wed, 14 Apr 2021 01:53:15 -0400 Received: by mail-lj1-f170.google.com with SMTP id u4so21995477ljo.6; Tue, 13 Apr 2021 22:52:54 -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=kK6ohouZ4UkyIjbGRwhMTiBkwG0HfqzEhxph13noG4AmDZ+aunuCYVWA9eST5apUH/ mblnZmI1t8yj+9i9qkw83m3kkaAhj5qHK1WmzuzH8z3kIeQwUuXFmLuVuTD8QmD/raiU WCgelVPR5VuT7w5AHvBaLGcxsgCPwRX/r98ieuo7ZJXBnu2uuxtzgSdDzEsw1agUxiO0 C2n1JxKYCw3OZVetgskN2Je2NNey3v3eo8mXoM6QpdAfVT27MFCmlD5yC00pIyZVdmWP Tc4ntYPpFu8E66fWzvhgF7+PEv4R5QTTHSxszjBZxDH3Z7fEnI3xsol3QTpgBVfd2c7A buxQ== X-Gm-Message-State: AOAM530e6sQGKcjwKD7s4spqv+0SbRy3XPdjaVRTsMue04Tm8EzuEiOb jR4PWaHhYy4/swvHamjqjgM= X-Google-Smtp-Source: ABdhPJyYM7EQLQ05u+txJ8bBXdlDINqA8zALgzkINnpaW5qMAG2eyLs+rC00Ur13wyACAiFIk7t/Fw== X-Received: by 2002:a05:651c:2049:: with SMTP id t9mr7603168ljo.370.1618379573649; Tue, 13 Apr 2021 22:52:53 -0700 (PDT) Received: from localhost.localdomain (dc7vkhyyyyyyyyyyyyydy-3.rev.dnainternet.fi. [2001:14ba:16e2:8300::6]) by smtp.gmail.com with ESMTPSA id m6sm2853795lfu.308.2021.04.13.22.52.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Apr 2021 22:52:53 -0700 (PDT) Date: Wed, 14 Apr 2021 08:52:47 +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 v7 3/9] regulator: add warning flags Message-ID: 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