linux-kernel - 答复: [PATCH] staging: rtsx: Add support for RTS5260

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Date:   Fri, 13 Oct 2017 10:30:20 +0000
From:   冯锐 <rui_feng@...lsil.com.cn>
To:     Greg KH <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>
CC:     "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "ricky_wu@...ltek.com" <ricky_wu@...ltek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        王炜 <wei_wang@...lsil.com.cn>
Subject: 答复: [PATCH] staging: rtsx: Add support for RTS5260

Loop Wei Wang

> On Fri, Oct 13, 2017 at 11:11:15AM +0100, Lee Jones wrote:
> > On Fri, 13 Oct 2017, Greg KH wrote:
> >
> > > On Fri, Oct 13, 2017 at 10:54:22AM +0100, Lee Jones wrote:
> > > > On Fri, 13 Oct 2017, Greg KH wrote:
> > > >
> > > > > On Fri, Oct 13, 2017 at 04:50:35PM +0800, rui_feng@...lsil.com.cn
> wrote:
> > > > > > From: rui_feng <rui_feng@...lsil.com.cn>
> > > > > >
> > > > > > Add support for new chip rts5260.
> > > > > > In order to support rts5260，the definitions of some internal
> > > > > > registers and workflow have to be modified and are different
> > > > > > from its predecessors and OCP function is added for RTS5260.
> > > > > > So we need this patch to ensure RTS5260 can work.
> > > > > >
> > > > > > Signed-off-by: Rui Feng <rui_feng@...lsil.com.cn>
> > > > >
> > > > > Your from and signed-off-by name does not match :(
> > > > >
> > > > > > ---
> > > > > >  drivers/mfd/Makefile              |   4 +
> > > > > >  drivers/mfd/rtsx_pcr.c            | 127 ++++++-
> > > > > >  drivers/mfd/rtsx_pcr.h            |  12 +
> > > > > >  drivers/staging/Kconfig           |   2 +
> > > > > >  drivers/staging/rts5260/Kconfig   |   6 +
> > > > > >  drivers/staging/rts5260/rts5260.c | 748
> > > > > > ++++++++++++++++++++++++++++++++++++++
> > > > > >  drivers/staging/rts5260/rts5260.h |  45 +++
> > > > > >  include/linux/mfd/rtsx_pci.h      | 234 +++++++++++-
> > > > >
> > > > > I do not see a reason why this is a staging driver.  Where is
> > > > > the TODO file listing what needs to be done to get it out of
> > > > > staging?  Why can it not just go into the "real" part of the kernel?
> > > >
> > > > It's not a staging driver.  Rui's focus appears to be to have this
> > > > driver accepted into Mainline by hook or by crock.  He's tried
> > > > MFD, Misc and now Staging!
> > >
> > > Yeah, I've watched it too :)
> > >
> > > > Background:
> > > >
> > > > There are a number of drivers in this family which currently
> > > > reside in MFD.  These were accepted before my time.  After a
> > > > recent review I've made the decision that these aren't MFD drivers at all.
> > > >
> > > > MFD drivers are ones which aid in registering and setting up
> > > > shared resources for sub-devices which reside on the same piece of
> silicon.
> > > > This driver does basically none of that.  Instead it *is* the
> > > > (what we describe above as) sub-device.  It does everything.
> > >
> > > I agree with your assessment.
> > >
> > > > In the absence of a subsystem which covers this type of device, I
> > > > suggested Misk as a good location to place these drivers.
> >
> > Sorry, that should have been "Misc"
> >
> > > What type of device is this thing?  I can't seem to figure that out.
> > > If we can determine that, then we can find the proper place for it
> > > in the kernel.
> >
> > It's a card (MMC, (u)SD, etc) reader.
> 
> Ok, how does it hook up to the hardware to talk to the reader?
> 
> And we have other card readers in drivers/misc/ so maybe that is the right
> place for it, depending on the api to the hardware.
> 
> thanks,
> 
> greg k-h
> 
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