From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: linux-mips@vger.kernel.org, "Huacai Chen" <chenhc@lemote.com>,
"Serge Semin" <Sergey.Semin@baikalelectronics.ru>,
"Alexey Malahov" <Alexey.Malahov@baikalelectronics.ru>,
"WANG Xuerui" <git@xen0n.name>,
"Paul Burton" <paulburton@kernel.org>,
"周琰杰 (Zhou Yanjie)" <zhouyanjie@wanyeetech.com>,
"afzal mohammed" <afzal.mohd.ma@gmail.com>,
"Paul Cercueil" <paul@crapouillou.net>,
"Liangliang Huang" <huanglllzu@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] MIPS: cevt-r4k: Enable intimer for Loongson64 CPUs with extimer
Date: Sun, 4 Oct 2020 22:12:49 +0200 [thread overview]
Message-ID: <20201004201249.GA8186@alpha.franken.de> (raw)
In-Reply-To: <CA420A99-C226-4A22-B3A6-4464DD8CFA1D@flygoat.com>
On Sat, Oct 03, 2020 at 02:25:42PM +0800, Jiaxun Yang wrote:
>
>
> 于 2020年10月2日 GMT+08:00 下午9:27:21, Thomas Bogendoerfer <tsbogend@alpha.franken.de> 写到:
> >On Wed, Sep 23, 2020 at 07:02:54PM +0800, Jiaxun Yang wrote:
> >>
> >> +#ifdef CONFIG_CPU_LOONGSON64
> >> +static int c0_compare_int_enable(struct clock_event_device *cd)
> >> +{
> >> + if (cpu_has_extimer)
> >> + set_c0_config6(LOONGSON_CONF6_INTIMER);
> >
> >why are you not simply do this in loognson64 board setup code and avoid
> >the whole cluttering of #ifdef CONFIG_CPU_LOONGSON64 over common code ?
>
> Because I'm going to add extimer support later that require dynamic
> switch of cevt-r4k.
another case of misdesigned hardware or why does this need to be
dynamic ?
> This callback is required.
please find a solution without #ifdef CONFIG_CPU_LOONGSON64. I dislike
the pollution of common code with all kinds of #ifdefs and in this case
there are better options.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
next prev parent reply other threads:[~2020-10-04 20:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-23 11:02 [PATCH] MIPS: cevt-r4k: Enable intimer for Loongson64 CPUs with extimer Jiaxun Yang
2020-10-02 13:27 ` Thomas Bogendoerfer
2020-10-03 6:25 ` Jiaxun Yang
2020-10-04 20:12 ` Thomas Bogendoerfer [this message]
2020-10-04 20:49 ` Paul Cercueil
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