From: Pavel Machek <pavel@ucw.cz>
To: "Andreas Färber" <afaerber@suse.de>
Cc: linux-rtc@vger.kernel.org,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Roc He <hepeng@zidoo.tv>,
csd@princeton.com.tw, linux-realtek-soc@lists.infradead.org,
Mark Brown <broonie@kernel.org>,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Dan Murphy <dmurphy@ti.com>,
linux-leds@vger.kernel.org, zypeng@titanmec.com,
linux-amlogic@lists.infradead.org, sales@fdhisi.com,
linux-arm-kernel@lists.infradead.org,
Jacek Anaszewski <jacek.anaszewski@gmail.com>
Subject: Re: [RFC 00/25] arm64: realtek: Add Xnano X5 and implement TM1628/FD628/AiP1618 LED controllers
Date: Sat, 21 Dec 2019 19:20:57 +0100 [thread overview]
Message-ID: <20191221182057.GA32732@amd> (raw)
In-Reply-To: <20191212033952.5967-1-afaerber@suse.de>
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Hi!
> This patch series implements the LED controllers found in some RTD1295 based
> TV set-top boxes.
>
> Ever since I've had mainline Linux kernels booting on my Zidoo X9S TV box,
> it's been bugging me that it kept displaying "boot" on its front display.
> A hot lead was a TM1628 chip on the front display's daughterboard, which
> English and Chinese datasheets were available for. The biggest
> hurdle
Fun :-).
> It goes on to add a "text" attribute to the driver that enables DT-configured
> seven-segment displays; I was expecting to find precedence in auxdisplay
> subsystem but came up empty. So my driver currently integrates its own
> generic (but incomplete) character-to-8-segments mapping, as well as in a
> second step a combined-characters-to-8-segments mapping, which then gets
> mapped to the chipset's available output lines. Doing this as sysfs
> device
I did not investigate this in great detail; but if it is displaying
characters, auxdisplay is probably right subsystem to handle that. I
guess LEDs can still take the low-level parts...
Oh, and common dimming for many LEDs is seen on other hardware, too
(Turris routers). Not sure how to handle that, either :-(.
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:[~2019-12-21 18:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 3:39 [RFC 00/25] arm64: realtek: Add Xnano X5 and implement TM1628/FD628/AiP1618 LED controllers Andreas Färber
2019-12-12 13:14 ` Robin Murphy
2019-12-12 20:55 ` Andreas Färber
2019-12-13 14:07 ` Robin Murphy
2019-12-13 14:36 ` Geert Uytterhoeven
2020-02-25 21:42 ` Ezra Buehler
2020-02-26 13:03 ` Pavel Machek
2019-12-21 18:20 ` Pavel Machek [this message]
2019-12-21 21:07 ` Andreas Färber
2020-01-15 13:34 ` Andreas Färber
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