linux-kernel - Re: [PATCH v5 2/2] leds: mt6360: Add LED driver for MT6360

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Message-ID: <CAE+NS35Y41mFKNhj+54BeeSYFu2J9BtvMWOxyMcf9a==39cbdA@mail.gmail.com>
Date:   Tue, 20 Oct 2020 14:44:04 +0800
From:   Gene Chen <gene.chen.richtek@...il.com>
To:     Jacek Anaszewski <jacek.anaszewski@...il.com>
Cc:     Pavel Machek <pavel@....cz>, Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Dan Murphy <dmurphy@...com>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Gene Chen <gene_chen@...htek.com>, Wilma.Wu@...iatek.com,
        shufan_lee@...htek.com, cy_huang@...htek.com,
        benjamin.chao@...iatek.com
Subject: Re: [PATCH v5 2/2] leds: mt6360: Add LED driver for MT6360

Jacek Anaszewski <jacek.anaszewski@...il.com> 於 2020年10月9日 週五 上午5:51寫道：
>
> Hi Gene,
>
> On 10/7/20 3:42 AM, Gene Chen wrote:
> > From: Gene Chen <gene_chen@...htek.com>
> >
> > Add MT6360 LED driver include 2-channel Flash LED with torch/strobe mode,
> > 3-channel RGB LED support Register/Flash/Breath Mode, and 1-channel for
> > moonlight LED.
> >
> > Signed-off-by: Gene Chen <gene_chen@...htek.com>
> > ---
> >   drivers/leds/Kconfig       |  12 +
> >   drivers/leds/Makefile      |   1 +
> >   drivers/leds/leds-mt6360.c | 783 +++++++++++++++++++++++++++++++++++++++++++++
> >   3 files changed, 796 insertions(+)
> >   create mode 100644 drivers/leds/leds-mt6360.c
> >
> > diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
> > index 1c181df..c7192dd 100644
> > --- a/drivers/leds/Kconfig
> > +++ b/drivers/leds/Kconfig
> > @@ -271,6 +271,18 @@ config LEDS_MT6323
> >         This option enables support for on-chip LED drivers found on
> >         Mediatek MT6323 PMIC.
> >
> > +config LEDS_MT6360
> > +     tristate "LED Support for Mediatek MT6360 PMIC"
> > +     depends on LEDS_CLASS_FLASH && OF
> > +     depends on LEDS_CLASS_MULTICOLOR
>
> Since CONFIG_LED_CLASS_MULTICOLOR can be turned off you need to have
> below instead:
>
> depends on LEDS_CLASS_MULTICOLOR || !!LEDS_CLASS_MULTICOLOR
>
> Unless you want to prevent enabling the driver without RGB LED,
> but that does not seem to be reasonable at first glance.
>

May I change to "select LEDS_CLASS_MULTICOLOR"?
I suppose RGB always use multicolor mode.

> > +     depends on V4L2_FLASH_LED_CLASS || !V4L2_FLASH_LED_CLASS
> > +     depends on MFD_MT6360
> > +     help
> > +       This option enables support for dual Flash LED drivers found on
> > +       Mediatek MT6360 PMIC.
> > +       Independent current sources supply for each flash LED support torch
> > +       and strobe mode.
> > +
>
> --
> Best regards,
> Jacek Anaszewski