From patchwork Tue May 18 11:26:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 442593 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=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 3C763C433B4 for ; Tue, 18 May 2021 11:26:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 222E461209 for ; Tue, 18 May 2021 11:26:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233486AbhERL17 (ORCPT ); Tue, 18 May 2021 07:27:59 -0400 Received: from mail-lf1-f47.google.com ([209.85.167.47]:46652 "EHLO mail-lf1-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233393AbhERL16 (ORCPT ); Tue, 18 May 2021 07:27:58 -0400 Received: by mail-lf1-f47.google.com with SMTP id i9so13558159lfe.13; Tue, 18 May 2021 04:26:39 -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=9UP0Ve8zPlcDC6ko6Yn1C9bDcYQbHNon0ynodga2ftY=; b=p0QHulf8CQuAP2M+ySriE9B2JAuTsX92KeNSpekkEhrtPYwKzfdieeB6GmnJAXyI4p L0SayRe/drFQHZEjJam1a9BIGWhXCXo8WrSqaSuUnocmFW2NEJhCt2uyw4vEM7QaCYAP jCgzkhFVVB28CVV1vwNqCQw8zppFLigFwV5eGgfQqQUiFbxCuuIPJ/zN8EVtmTxhgZ7y P0uBdcjbSbnhFZHwNBsqWsHeoJ4gwy8xbjBtewodt90qdMAwOYMpQ80g5qT3mo+CgDJX Q9yUKw6JAPpajKeru/2FWeR8EeaTGeR4VhWh+9gNIDRemiAztqVZDuVrKT50INSTv4GX BpjQ== X-Gm-Message-State: AOAM533pjAiRD+sp4bR9rmfEbXiEYn+41F8NEmpEkFJ2L9MzKh4btkrY EAohR8WRTACUwRA28huDkuw= X-Google-Smtp-Source: ABdhPJzDYHNNxgJ27Y/fsTnyCSkA52sefFwuudJ2N0R7TR2XgC/vabSADcgYwIo+FjEhSkSU/ME6LA== X-Received: by 2002:ac2:5dfc:: with SMTP id z28mr3803962lfq.297.1621337199080; Tue, 18 May 2021 04:26:39 -0700 (PDT) Received: from localhost.localdomain (dc7vkhyyyyyyyyyyyyyyt-3.rev.dnainternet.fi. [2001:14ba:16e2:8300::1]) by smtp.gmail.com with ESMTPSA id m12sm2279010lfb.72.2021.05.18.04.26.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 May 2021 04:26:38 -0700 (PDT) Date: Tue, 18 May 2021 14:26:31 +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 v10 04/11] 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-arm-msm@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