linux-kernel - Re: [PATCH v5 01/18] platform/x86: intel_scu_ipc: Split out SCU IPC functionality from the SCU driver

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Date:   Wed, 12 Feb 2020 13:34:16 +0200
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Darren Hart <dvhart@...radead.org>,
        Lee Jones <lee.jones@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Zha Qipeng <qipeng.zha@...el.com>,
        "David E . Box" <david.e.box@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 01/18] platform/x86: intel_scu_ipc: Split out SCU IPC
 functionality from the SCU driver

On Tue, Feb 11, 2020 at 05:39:24PM +0200, Andy Shevchenko wrote:
> On Tue, Feb 11, 2020 at 04:25:46PM +0300, Mika Westerberg wrote:
> > The SCU IPC functionality is usable outside of Intel MID devices. For
> > example modern Intel CPUs include the same thing but now it is called
> > PMC (Power Management Controller) instead of SCU. To make the IPC
> > available for those split the driver into core part (intel_scu_ipc.c)
> > and the SCU PCI driver part (intel_scu_pcidrv.c) which then calls the
> > former before it goes and creates rest of the SCU devices. The SCU IPC
> > will also register a new class that gets assigned to the device that is
> > created under the parent PCI device.
> > 
> > We also split the Kconfig symbols so that INTEL_SCU_IPC enables the SCU
> > IPC library and INTEL_SCU_PCI the SCU driver and convert the users
> > accordingly. While there remove default y from the INTEL_SCU_PCI symbol
> > as it is already selected by X86_INTEL_MID.
> 
> ...
> 
> >  config INTEL_SCU_IPC
> 
> > +config INTEL_SCU
> 
> > +config INTEL_SCU_PCI
> 
> >  config INTEL_SCU_IPC_UTIL
> ...
> 
> >  obj-$(CONFIG_INTEL_PUNIT_IPC)		+= intel_punit_ipc.o
> >  obj-$(CONFIG_INTEL_SCU_IPC)		+= intel_scu_ipc.o
> >  obj-$(CONFIG_INTEL_SCU_IPC_UTIL)	+= intel_scu_ipcutil.o
> > +obj-$(CONFIG_INTEL_SCU_PCI)		+= intel_scu_pcidrv.o
> 
> Please, keep the symbol ordering (whatever you choose) the same
> in Makefile and Kconfig.

OK, will do.