linux-kernel - Re: [RFC PATCH 1/3] leds: Add driver for QPNP flash led

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Date:   Sun, 8 Nov 2020 17:52:56 +0100
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     Nícolas F. R. A. Prado 
        <nfraprado@...tonmail.com>, Pavel Machek <pavel@....cz>,
        Dan Murphy <dmurphy@...com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-leds@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        Brian Masney <masneyb@...tation.org>,
        Luca Weiss <luca@...tu.xyz>,
        Russell King <linux@...linux.org.uk>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        linux-kernel@...r.kernel.org, lkcamp@...ts.libreplanetbr.org,
        andrealmeid@...labora.com
Subject: Re: [RFC PATCH 1/3] leds: Add driver for QPNP flash led

Hi Nicolas,

We have LED flash class framework since 2015. Please refer to the
following files:

Documentation/leds/leds-class-flash.rst
Documentation/ABI/testing/sysfs-class-led-flash
Documentation/devicetree/bindings/leds/common.yaml
drivers/leds/led-class-flash.c

Thare are also few LED flash drivers in the tree. Since there seems to
be boost feature present on the the device then you might want to
compare drivers/leds/leds-max77693.c with its bindings
Documentation/devicetree/bindings/mfd/max77693.txt (refer to LED part).

Please also remember to include DT bindings patch to your series.

On 11/6/20 5:58 PM, Nícolas F. R. A. Prado wrote:
> Add driver for the QPNP flash LED. It works over SPMI and is part of the
> PM8941 PMIC.
> 
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...tonmail.com>
> ---
>   drivers/leds/Kconfig     |    9 +
>   drivers/leds/Makefile    |    1 +
>   drivers/leds/leds-qpnp.c | 1351 ++++++++++++++++++++++++++++++++++++++
>   3 files changed, 1361 insertions(+)
>   create mode 100644 drivers/leds/leds-qpnp.c
> 

-- 
Best regards,
Jacek Anaszewski