linux-kernel - Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG

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Message-ID: <CAOCOHw7N9EHcxSSe6n8828oy2fh6xNxRYf9OUXkY4SQh6gtVLw@mail.gmail.com>
Date:   Tue, 24 May 2022 10:02:51 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Pavel Machek <pavel@....cz>,
        Marijn Suijten <marijn.suijten@...ainline.org>
Cc:     Richard Purdie <rpurdie@...ys.net>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG

On Mon, May 23, 2022 at 11:30 AM Pavel Machek <pavel@....cz> wrote:
>
> Hi!
>
> > The Light Pulse Generator (LPG) is a PWM-block found in a wide range of
> > PMICs from Qualcomm. It can operate on fixed parameters or based on a
> > lookup-table, altering the duty cycle over time - which provides the
> > means for e.g. hardware assisted transitions of LED brightness.
> >
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
>
> I'd really like to see the patch fixing the pattern interface (or
> disabling it). I don't want to push the tree to Linus with that bug.
>

Please find a proposed update to lpg_pattern_set() and the documentation at:
https://lore.kernel.org/linux-arm-msm/20220523233719.1496297-1-bjorn.andersson@linaro.org/T/#u

@Marijn, would love to get your input on this proposal.

Regards,
Bjorn