linux-kernel - Re: [PATCH v6 5/6] platform/x86:intel/pmc: Move arch specific action to init function

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Message-ID: <69b2b41b-5fcd-a7f2-576a-b00f2d390d8e@linux.intel.com>
Date: Mon, 10 Feb 2025 13:58:06 +0200 (EET)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Xi Pardee <xi.pardee@...ux.intel.com>
cc: rajvi0912@...il.com, irenic.rajneesh@...il.com, 
    david.e.box@...ux.intel.com, Hans de Goede <hdegoede@...hat.com>, 
    platform-driver-x86@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, 
    linux-pm@...r.kernel.org
Subject: Re: [PATCH v6 5/6] platform/x86:intel/pmc: Move arch specific action
 to init function

On Fri, 7 Feb 2025, Xi Pardee wrote:

> Move arch specific action from core.c to the init() function of spt.c.
> 
> Signed-off-by: Xi Pardee <xi.pardee@...ux.intel.com>
> ---
>  drivers/platform/x86/intel/pmc/core.c | 13 -------------
>  drivers/platform/x86/intel/pmc/spt.c  | 21 +++++++++++++++++++++
>  2 files changed, 21 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
> index 628cb22221fbc..06821c41fbeb9 100644
> --- a/drivers/platform/x86/intel/pmc/core.c
> +++ b/drivers/platform/x86/intel/pmc/core.c
> @@ -1416,11 +1416,6 @@ static const struct x86_cpu_id intel_pmc_core_ids[] = {
>  
>  MODULE_DEVICE_TABLE(x86cpu, intel_pmc_core_ids);
>  
> -static const struct pci_device_id pmc_pci_ids[] = {
> -	{ PCI_VDEVICE(INTEL, SPT_PMC_PCI_DEVICE_ID) },
> -	{ }
> -};
> -
>  /*
>   * This quirk can be used on those platforms where
>   * the platform BIOS enforces 24Mhz crystal to shutdown
> @@ -1531,14 +1526,6 @@ static int pmc_core_probe(struct platform_device *pdev)
>  	if (!pmcdev->pkgc_res_cnt)
>  		return -ENOMEM;
>  
> -	/*
> -	 * Coffee Lake has CPU ID of Kaby Lake and Cannon Lake PCH. So here
> -	 * Sunrisepoint PCH regmap can't be used. Use Cannon Lake PCH regmap
> -	 * in this case.
> -	 */
> -	if (pmc_dev_info == &spt_pmc_dev && !pci_dev_present(pmc_pci_ids))
> -		pmc_dev_info = &cnp_pmc_dev;
> -
>  	mutex_init(&pmcdev->lock);
>  
>  	if (pmc_dev_info->init)
> diff --git a/drivers/platform/x86/intel/pmc/spt.c b/drivers/platform/x86/intel/pmc/spt.c
> index 956b2ec1c7510..9289cd76b0145 100644
> --- a/drivers/platform/x86/intel/pmc/spt.c
> +++ b/drivers/platform/x86/intel/pmc/spt.c
> @@ -8,6 +8,8 @@
>   *
>   */
>  
> +#include <linux/pci.h>
> +
>  #include "core.h"
>  
>  const struct pmc_bit_map spt_pll_map[] = {
> @@ -134,6 +136,25 @@ const struct pmc_reg_map spt_reg_map = {
>  	.pm_vric1_offset = SPT_PMC_VRIC1_OFFSET,
>  };
>  
> +static const struct pci_device_id pmc_pci_ids[] = {
> +	{ PCI_VDEVICE(INTEL, SPT_PMC_PCI_DEVICE_ID) },
> +	{ }
> +};
> +
> +static int spt_core_init(struct pmc_dev *pmcdev, struct pmc_dev_info *pmc_dev_info)
> +{
> +	/*
> +	 * Coffee Lake has CPU ID of Kaby Lake and Cannon Lake PCH. So here
> +	 * Sunrisepoint PCH regmap can't be used. Use Cannon Lake PCH regmap
> +	 * in this case.
> +	 */
> +	if (!pci_dev_present(pmc_pci_ids))
> +		return generic_core_init(pmcdev, &cnp_pmc_dev);
> +
> +	return generic_core_init(pmcdev, pmc_dev_info);
> +}
> +
>  struct pmc_dev_info spt_pmc_dev = {
>  	.map = &spt_reg_map,
> +	.init = spt_core_init,
>  };
> 

Hi,

I've applied all but this patch into the review-ilpo-next branch.

This change is good otherwise but I'd prefer the pmc_pci_ids be named 
better such that it actually relates to why it exists :-). So please 
respin this patch.

-- 
 i.