Date: Mon, 22 Jan 2018 09:02:24 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r328257 - in head/sys: arm/broadcom/bcm2835 dts/arm modules Message-ID: <86939.1516611744@critter.freebsd.dk> In-Reply-To: <20180122094629.f292f9f239174f0865b046ea@bidouilliste.com> References: <201801220710.w0M7AUm9091853@repo.freebsd.org> <20180122094629.f292f9f239174f0865b046ea@bidouilliste.com>
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In message <20180122094629.f292f9f239174f0865b046ea@bidouilliste.com>, Emmanuel
Vadot writes:
>> + * Copyright (C) 2013-2015 Daisuke Aoyama <aoyama@peach.ne.jp>
>
> Was is based on some file ?
> Also someone will probably complain about SDPX tag here :)
Yes, I grabbed the blurp from a nearby file and forgot to edit it,
it's fixed now.
>> + if (unit != BCM_PWM_CLKSRC) {
>> + device_printf(sc->sc_dev,
>> + "Unsupported unit 0x%x", unit);
>> + return (0);
>> + }
>
> Uhg, this is ... ugly ...
Yes, very much so.
> The proper way will be to introduce a real clock manager exposing a
>clock domain and clocks using the extres/clk framework.
Yes, Somebody[tm] should really do that[1], just like Somebody[tm] should
write drivers for all sorts of other stuff on all sorts of platforms.
Eventually Somebody[tm] may even get around to that, but in the
meantime people who play with FreeBSD on Rpi's can at least get
the PWM output to work.
Poul-Henning
[1] Are you tired of Nice & Accurate[tm] chip documentation which
leaves no room for creativity and exploration?
Do you love to extrapolate and second-guess chip-designers mental
process from random snippets of incompetently written code ?
If so, you may find welcome relief trying to write a device driver
for the "BCM283x - Documentation - Scmockumentation!" family of
devices!
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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