linux-kernel - Re: [PATCH V5 1/2] backlight: qcom-wled: Fix FSC update issue for WLED5

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Date:   Mon, 22 Mar 2021 17:34:13 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Kiran Gunda <kgunda@...eaurora.org>
Cc:     bjorn.andersson@...aro.org, jingoohan1@...il.com,
        b.zolnierkie@...sung.com, dri-devel@...ts.freedesktop.org,
        daniel.thompson@...aro.org, jacek.anaszewski@...il.com,
        pavel@....cz, robh+dt@...nel.org, mark.rutland@....com,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        Andy Gross <agross@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-fbdev@...r.kernel.org
Subject: Re: [PATCH V5 1/2] backlight: qcom-wled: Fix FSC update issue for
 WLED5

On Thu, 18 Mar 2021, Kiran Gunda wrote:

> Currently, for WLED5, the FSC (Full scale current) setting is not
> updated properly due to driver toggling the wrong register after
> an FSC update.
> 
> On WLED5 we should only toggle the MOD_SYNC bit after a brightness
> update. For an FSC update we need to toggle the SYNC bits instead.
> 
> Fix it by adopting the common wled3_sync_toggle() for WLED5 and
> introducing new code to the brightness update path to compensate.
> 
> Signed-off-by: Kiran Gunda <kgunda@...eaurora.org>
> Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>
> ---
>  drivers/video/backlight/qcom-wled.c | 25 +++++++++++++++++++------
>  1 file changed, 19 insertions(+), 6 deletions(-)

Applied, thanks.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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