linux-kernel - Re: [PATCH v2 00/36] platform/x86: Rework intel_scu_ipc and intel_pmc

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Date:   Mon, 13 Jan 2020 10:38:07 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Mika Westerberg <mika.westerberg@...ux.intel.com>
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>,
        Rajneesh Bhardwaj <rajneesh.bhardwaj@...ux.intel.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>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 00/36] platform/x86: Rework intel_scu_ipc and
 intel_pmc_ipc drivers

On Wed, 08 Jan 2020, Mika Westerberg wrote:

> Hi,
> 
> Currently both intel_scu_ipc.c and intel_pmc_ipc.c implement the same SCU
> IPC communications with minor differences. This duplication does not make
> much sense so this series reworks the two drivers so that there is only a
> single implementation of the SCU IPC. In addition to that the API will be
> updated to take SCU instance pointer as an argument, and most of the
> callers will be converted to this new API. The old API is left there but
> the plan is to get rid the callers and then the old API as well (this is
> something we are working with Andy Shevchenko).
> 
> The intel_pmc_ipc.c is then moved under MFD which suits better for this
> kind of a driver that pretty much sets up the SCU IPC and then creates a
> bunch of platform devices for the things sitting behind the PMC. The driver
> is renamed to intel_pmc_bxt.c which should follow the existing conventions
> under drivers/mfd (and it is only meant for Intel Broxton derivatives).
> 
> Previous version of the series:
> 
>   https://www.spinics.net/lists/platform-driver-x86/msg20359.html
> 
> Changes from the previous version:
> 
>   * Update changelog of patch 16 according to what the patch actually does.
>   * Add kernel-doc for struct intel_soc_pmic.
>   * Move octal permission patch to be before MFD conversion.
>   * Convert the intel_pmc_bxt.c to MFD APIs whilst it is being moved under
>     drivers/mfd.
> 
> I'm including all x86 maintainers just to be sure they are aware of this as
> I'm not sure if x86@...nel.org reaches them all. Let me know if you have
> issues with this series.
> 
> I would prefer this to be merged through platform/x86 or MFD trees assuming
> there are no objections.
> 
> I have tested this on Intel Edison (Merrifield) and Joule (Broxton-M).

FYI, I'm waiting until v3 before I conduct my review.

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