From patchwork Sun Feb 7 15:46:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12073087 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=-19.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 B2FEEC433E0 for ; Sun, 7 Feb 2021 15:50:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7ACFF64E3E for ; Sun, 7 Feb 2021 15:50:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229618AbhBGPuM (ORCPT ); Sun, 7 Feb 2021 10:50:12 -0500 Received: from mail.kernel.org ([198.145.29.99]:34032 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229623AbhBGPuJ (ORCPT ); Sun, 7 Feb 2021 10:50:09 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id C5BAD64E53; Sun, 7 Feb 2021 15:48:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612712938; bh=/MAkf+rmyWrWdd25iKKkrS07W14XZXRkgsf8cbh2gM8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JQX3dYiMFYUxCymAGC3vI6Yg6LqdBUtmQd72h3iTiuiFcvjBZG0j3pibYx56DWZkg eU9y7bf+gzZ65SRD8cqc0lV+nbVfzW9G7ZFNW8JNRH7DSnedso2CwguQzCRf+VNavN aaNPo/8JPtHgrE2kWnAjLA/5YBk6XE5dr5yDdPyLjwtL+D2HF5wWK+9q1+XnJJWDnx 3B7oJoW9wdzud9ug3kAij8CeEE/t8Sj9pIdACkJrxp8WX0fSpwlQV02QbIokldHCBD RAObs8dmfTBHZS89CnJbNcsCZ/9mzADWWnzcRXA/WLcMJKPoJzdYH4YjCrrlAFpugv wRTbLQX21ndfA== From: Jonathan Cameron To: linux-iio@vger.kernel.org Cc: Lars-Peter Clausen , Michael Hennerich , song.bao.hua@hisilicon.com, robh+dt@kernel.org, Jonathan Cameron Subject: [PATCH 10/24] iio:event: Add timeout event info type Date: Sun, 7 Feb 2021 15:46:09 +0000 Message-Id: <20210207154623.433442-11-jic23@kernel.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210207154623.433442-1-jic23@kernel.org> References: <20210207154623.433442-1-jic23@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Jonathan Cameron For adaptive threshold events, the current value is compared with a (typically) low pass filtered version of the same signal that slowly tracks large scale changes. However, sometimes a step change can result in a large lag before the low pass filtered version begins to track the signal again. Timeouts can be used to made an instantaneous 'correction'. Documentation of this attribute is added in a later patch. Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-event.c | 1 + include/linux/iio/types.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index 7e532117ac55..ad01b4d84562 100644 --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -245,6 +245,7 @@ static const char * const iio_ev_info_text[] = { [IIO_EV_INFO_PERIOD] = "period", [IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db", [IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db", + [IIO_EV_INFO_TIMEOUT] = "timeout", }; static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr) diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 1e3ed6f55bca..f2e7c96e6e81 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -16,6 +16,7 @@ enum iio_event_info { IIO_EV_INFO_PERIOD, IIO_EV_INFO_HIGH_PASS_FILTER_3DB, IIO_EV_INFO_LOW_PASS_FILTER_3DB, + IIO_EV_INFO_TIMEOUT, }; #define IIO_VAL_INT 1