linux-kernel - Re: [PATCH] iio: pulse: Support PWM capture with TI AM3358 eCAP module

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Message-ID: <CAHp75VcpyHgmkerPE7OmkM-FyF1YWLH0u1EPQhaTYcuOYj5htQ@mail.gmail.com>
Date:   Thu, 20 Aug 2020 16:02:01 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Darren Schachter <dts86@...nell.edu>,
        Christopher Hall <christopher.s.hall@...el.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald <pmeerw@...erw.net>,
        Matt Porter <mporter@...sulko.com>,
        robertcnelson@...gleboard.org, Drew Fustini <drew@...gleboard.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-iio <linux-iio@...r.kernel.org>
Subject: Re: [PATCH] iio: pulse: Support PWM capture with TI AM3358 eCAP module

+Cc: Chris

On Tue, Aug 18, 2020 at 6:37 PM Darren Schachter <dts86@...nell.edu> wrote:
>
> This IIO driver adds support for PWM capture with the TI eCAP module.
> This driver is based on Matt Porter's eCAP driver from January 2014,
> which was never merged into the mainline [1]. Like Matt's code, this
> driver implements interrupt driven triggered buffer capture. However,
> the driver has been updated based on previous suggestions in the IIO
> mailing list. Additionally, support for prescalar control and finer
> polarity control has been included. Users can now configure the
> polarities of CAP1 and CAP2 individually, allowing for the measurement
> of a signal's high-time, low-time, or period.

Chris, does this ring any bell (in terms of certain functionality of
Time-aware GPIO)?




-- 
With Best Regards,
Andy Shevchenko