linux-kernel - Re: [PATCH v4 37/38] platform/x86: intel_pmc

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Message-ID: <20200122144523.GX2665@lahna.fi.intel.com>
Date:   Wed, 22 Jan 2020 16:45:23 +0200
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Darren Hart <dvhart@...radead.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>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Mark Brown <broonie@...nel.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 37/38] platform/x86: intel_pmc_ipc: Convert to MFD

On Wed, Jan 22, 2020 at 01:27:57PM +0000, Lee Jones wrote:
> > Which type of device you suggest here? And which bus it should be
> > registered to? I think we can make this create a platform_device but
> > then we would need to do that from the PCI driver as well which seems
> > unnecessary since we already have the struct pci_dev.
> 
> What kind of device is it?

It is either part of an ACPI device (platform_device) or a PCI device
depending on the platform.

> Refrain from using platform device, unless it is one please.

OK.

Greg suggested making the SCU IPC functionality a class and I think it
fits here nicely so I'm going to try that next if nobody objects. I'll
send the first cleanup patches separately.