linux-kernel - Re: [PATCH v6 1/5] platform/x86/intel: intel_pmc_core: Move intel_pmc

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Date:   Sat, 31 Jul 2021 11:41:45 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Gayatri Kammela <gayatri.kammela@...el.com>
Cc:     Platform Driver <platform-driver-x86@...r.kernel.org>,
        Mark Gross <mgross@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        You-Sheng Yang <vicamo.yang@...onical.com>,
        "Pandruvada, Srinivas" <srinivas.pandruvada@...el.com>,
        "Box, David E" <david.e.box@...el.com>, chao.qin@...el.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Tamar Mashiah <tamar.mashiah@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rajat Jain <rajatja@...gle.com>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>,
        Alex Deucher <Alexander.Deucher@....com>, mlimonci@....com
Subject: Re: [PATCH v6 1/5] platform/x86/intel: intel_pmc_core: Move
 intel_pmc_core* files to pmc subfolder

On Sat, Jul 31, 2021 at 9:10 AM Gayatri Kammela
<gayatri.kammela@...el.com> wrote:
>
> As part of collecting Intel x86 specific drivers in their own
> folder, move intel_pmc_core* files to its own subfolder there.

...

>  .../pmc/pltdrv.c}                             |  0

I would go further and spell it as platform.c.

...

> -F:     drivers/platform/x86/intel_pmc_core*
> +F:     drivers/platform/x86/intel/pmc/core*

This seems incorrect.

...

> +         Supported features:
> +               - SLP_S0_RESIDENCY counter
> +               - PCH IP Power Gating status
> +               - LTR Ignore / LTR Show

> +               - MPHY/PLL gating status (Sunrisepoint PCH only)
> +               - SLPS0 Debug registers (Cannonlake/Icelake PCH)
> +               - Low Power Mode registers (Tigerlake and beyond)

Perhaps you may use the opportunity to spell codenames in a better way, i.e.
Sunrise Point
Cannon Lake
Ice Lake
Tiger Lake

as it's done almost everywhere else in the kernel.

...

> +obj-$(CONFIG_INTEL_PMC_CORE)   += intel_pmc_core.o
> +intel_pmc_core-objs            += core.o

objs suffix is not for kernel modules.
Moreover, := has a difference to +=. Why is the latter in use?

> +obj-$(CONFIG_INTEL_PMC_CORE)   += pltdrv.o

This will have the very same issue as with the core module. On top of
that, do you need a separate module for it? If so, why?

-- 
With Best Regards,
Andy Shevchenko