linux-kernel - Re: [PATCH v3 23/27] staging: iio: resolver: ad2s1210: convert DOS overrange threshold to event attr

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Message-ID: <20230930163318.7b9d6181@jic23-huawei>
Date:   Sat, 30 Sep 2023 16:33:18 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     David Lechner <dlechner@...libre.com>
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-staging@...ts.linux.dev,
        David Lechner <david@...hnology.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Nuno Sá <nuno.sa@...log.com>,
        Axel Haslam <ahaslam@...libre.com>,
        Philip Molloy <pmolloy@...libre.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 23/27] staging: iio: resolver: ad2s1210: convert DOS
 overrange threshold to event attr

On Fri, 29 Sep 2023 12:23:28 -0500
David Lechner <dlechner@...libre.com> wrote:

> From: David Lechner <david@...hnology.com>
> 
> From: David Lechner <dlechner@...libre.com>
> 
> The AD2S1210 has a programmable threshold for the degradation of signal
> (DOS) overrange fault. This fault is triggered when either the sine or
> cosine input rises the threshold voltage.

rises above the threshold voltage.

> 
> This patch converts the custom device DOS overrange threshold attribute
> to an event rising edge threshold attribute on the monitor signal
> channel.
> 
> The attribute now uses millivolts instead of the raw register value in
> accordance with the IIO ABI.
> 
> Emitting the event will be implemented in a later patch.
> 
> Signed-off-by: David Lechner <dlechner@...libre.com>