From: Pavel Machek <pavel@ucw.cz>
To: Gene Chen <gene.chen.richtek@gmail.com>
Cc: jacek.anaszewski@gmail.com, robh+dt@kernel.org,
Matthias Brugger <matthias.bgg@gmail.com>,
Dan Murphy <dmurphy@ti.com>,
linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
Gene Chen <gene_chen@richtek.com>,
Wilma.Wu@mediatek.com, shufan_lee@richtek.com,
cy_huang@richtek.com, benjamin.chao@mediatek.com
Subject: Re: [PATCH v3 1/2] leds: mt6360: Add LED driver for MT6360
Date: Thu, 10 Sep 2020 14:29:58 +0200 [thread overview]
Message-ID: <20200910122958.GF7907@duo.ucw.cz> (raw)
In-Reply-To: <CAE+NS34h9qbdHkYDYDnHGgk+9mFNTRpKEMKNEFZ+Secf6JyoZg@mail.gmail.com>
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Hi!
> > > +{
> > > + struct mt6360_led *led = container_of(lcdev, struct mt6360_led, flash.led_cdev);
> > > + struct mt6360_priv *priv = led->priv;
> > > + u32 enable_mask = MT6360_TORCHEN_MASK | MT6360_FLCSEN_MASK(led->led_no);
> > > + u32 val = (level) ? MT6360_FLCSEN_MASK(led->led_no) : 0;
> > > + u32 prev = priv->fled_torch_used, curr;
> > > + int ret;
> > > +
> > > + dev_dbg(lcdev->dev, "[%d] brightness %d\n", led->led_no, level);
> > > + if (priv->fled_strobe_used) {
> > > + dev_warn(lcdev->dev, "Please disable strobe first [%d]\n", priv->fled_strobe_used);
> > > + return -EINVAL;
> > > + }
> >
> > So... how does its userland interface look like?
> >
>
> 1. set FLED1 brightness
> # echo 1 > /sys/class/leds/white:flash1/flash_brightness
> 2. enable FLED1 strobe
> # echo 1 > /sys/class/leds/white:flash1/flash_strobe
> 3 . turn off FLED1 strobe (just used to gaurantee the strobe mode
> flash leds must be turned off)
> # echo 0 > /sys/class/leds/white:flash1/flash_strobe
I believe I'd preffer only exposing torch functionality in
/sys/class/leds. .. strobe can be supported using v4l2 APIs.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2020-09-10 12:33 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-07 10:27 [PATCH v3 0/2] leds: mt6360: Add LED driver for MT6360 Gene Chen
2020-09-07 10:27 ` [PATCH v3 1/2] " Gene Chen
2020-09-08 14:13 ` Dan Murphy
2020-09-08 22:25 ` Pavel Machek
2020-09-09 23:49 ` Gene Chen
2020-09-10 12:29 ` Pavel Machek [this message]
2020-09-10 20:23 ` Jacek Anaszewski
2020-09-10 20:25 ` Pavel Machek
2020-09-10 20:31 ` Jacek Anaszewski
2020-09-09 13:48 ` Andy Shevchenko
2020-09-10 0:11 ` Gene Chen
2020-09-10 8:18 ` Pavel Machek
2020-09-10 11:34 ` Andy Shevchenko
2020-09-10 12:28 ` Pavel Machek
2020-09-10 11:46 ` Andy Shevchenko
2020-09-10 21:42 ` Jacek Anaszewski
2020-09-11 7:05 ` Pavel Machek
2020-09-10 23:24 ` Gene Chen
2020-09-11 21:21 ` Jacek Anaszewski
2020-09-11 20:56 ` Jacek Anaszewski
2020-09-07 10:27 ` [PATCH v3 2/2] dt-bindings: leds: Add bindings for MT6360 LED Gene Chen
2020-09-08 13:55 ` Dan Murphy
2020-09-08 22:22 ` Pavel Machek
2020-09-15 15:51 ` Rob Herring
2020-09-08 14:14 ` [PATCH v3 0/2] leds: mt6360: Add LED driver for MT6360 Dan Murphy
2020-09-09 0:00 ` Gene Chen
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