[V2] dmaengine: fsl-qdma: add NXP Layerscape qDMA engine driver support

[Vinod Koul <vinod.koul@intel.com>]

On Tue, Jan 09, 2018 at 03:30:43AM +0000, Wen He wrote:
> 
> 
> > -----Original Message-----
> > From: dmaengine-owner@vger.kernel.org
> > [mailto:dmaengine-owner@vger.kernel.org] On Behalf Of Vinod Koul
> > Sent: 2018年1月8日 18:42
> > To: Wen He <wen.he_1@nxp.com>
> > Cc: kbuild test robot <lkp@intel.com>; kbuild-all@01.org; Leo Li
> > <leoyang.li@nxp.com>; dmaengine@vger.kernel.org; Jiafei Pan
> > <jiafei.pan@nxp.com>; Jiaheng Fan <jiaheng.fan@nxp.com>
> > Subject: Re: [V2] dmaengine: fsl-qdma: add NXP Layerscape qDMA engine
> > driver support
> > 
> > On Thu, Jan 04, 2018 at 07:36:09AM +0000, Wen He wrote:
> > > Hi Vinod,
> > 
> > Hi,
> > 
> > Please wrap you replies to 80 chars, I have reflow below..
> 
> okay
> 
> > >
> > > I don't know what's them compile? Does means 'the driver has public
> > > driver, so any arch will compile it'?
> > 
> > Today it does compile on all archs
> > 
> > >
> > > If so, the compile qdma module need enable config options
> > > 'CONFIG_FSl_QDMA' and other architecture should be hide the options.
> > > The driver supported arm or arm64 arch, If I change Kconfig to solve
> > > compile issues, Can I do that?
> > 
> > yes but as a last resort, it would still help if driver has no dependency on arch
> > and is able to compile on others..
> > 
> 
> Hi,
> 
> I want to do the same, but I can only verify in x86/x86_64, arm/arm64 and powerpc.
> 
> For now, the issues is ioread32/64 ioread32/64be and iowrite32/64 iowrite32/64be depends on arch defined.
> most arch defined it, but other not defined(such as x86,s390..).
> 
> do you have any good ideas?

ah okay that sounds okay then, I think putting "depends on ARM || ARM64"
sounds fair to me