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Date:   Mon, 20 Jul 2020 15:54:32 +0100
From:   Lee Jones <lee.jones@linaro.org>
To:     Linus Walleij <linus.walleij@linaro.org>
Cc:     ricky_wu@realtek.com, Arnd Bergmann <arnd@arndb.de>,
        Greg KH <gregkh@linuxfoundation.org>,
        Ulf Hansson <ulf.hansson@linaro.org>, rui_feng@realsil.com.cn,
        Bjorn Helgaas <bhelgaas@google.com>, kdlnx@doth.eu,
        Rui Miguel Silva <rmfrfs@gmail.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        linux-mmc <linux-mmc@vger.kernel.org>
Subject: Re: [PATCH] misc: rtsx: Add support new chip rts5228 mmc: rtsx: Add
 support MMC_CAP2_NO_MMC
Message-ID: <20200720145432.GB621928@dell>
References: <20200706070259.32565-1-ricky_wu@realtek.com>
 <CACRpkdbkpwMaS3FR1F1-WU5AjwvBchwLDKDhgHAA+-sKZLRpsg@mail.gmail.com>
 <20200720145202.GA621928@dell>
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On Mon, 20 Jul 2020, Lee Jones wrote:

> On Mon, 20 Jul 2020, Linus Walleij wrote:
> 
> > On Mon, Jul 6, 2020 at 9:03 AM <ricky_wu@realtek.com> wrote:
> > 
> > >  drivers/misc/cardreader/Makefile   |   2 +-
> > >  drivers/misc/cardreader/rts5228.c  | 740 +++++++++++++++++++++++++++++
> > >  drivers/misc/cardreader/rts5228.h  | 168 +++++++
> > >  drivers/misc/cardreader/rtsx_pcr.c |  89 ++--
> > >  drivers/misc/cardreader/rtsx_pcr.h |   5 +
> > 
> > This drivers/misc/cardreader business is a big confusion for my mind.
> > 
> > Is it really that fantastic that it needs to be a unique special case?
> > 
> > To me it looks like a drivers/mfd thing which should have separate
> > drivers/regulator/rts5228.c (LDOs)
> > drivers/clk/rts5228.c (clocks)
> > subdrivers.
> > 
> > See for example drivers/mfd/sta2x11-mfd.c thay spawns a few
> > devices off a PCI card.
> 
> Thanks for Cc'ing me Linus.
> 
> Can you please bounce the diff to me too?

Never mind, I found it.

So you may use MFD to register the (regulator, clk, card reader) child
devices, but pretty much none of that *functional* code belongs in
drivers/mfd.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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