linux-kernel - Re: [PATCH] thermal: intel_pch_thermal: Add PCI ids for Lewisburg PCH.

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Date:   Sat, 14 Nov 2020 18:41:23 +0000
From:   "Pandruvada, Srinivas" <srinivas.pandruvada@...el.com>
To:     "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "andres@...razel.de" <andres@...razel.de>
CC:     "Zhang, Rui" <rui.zhang@...el.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] thermal: intel_pch_thermal: Add PCI ids for Lewisburg
 PCH.

On Fri, 2020-11-13 at 12:49 -0800, Andres Freund wrote:
> I noticed that I couldn't read the PCH temperature on my workstation
> (C620 series chipset, w/ 2x Xeon Gold 5215 CPUs) directly, but had to
> go
> through IPMI. Looking at the data sheet, it looks to me like the
> existing intel PCH thermal driver should work without changes for
> Lewisburg.
> 
> I suspect there's some other PCI IDs missing. But I hope somebody at
> Intel would have an easier time figuring that out than I...
> 
> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
> Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> Cc: Tushar Dave <tushar.n.dave@...el.com>
> Cc: Zhang Rui <rui.zhang@...el.com>
> Cc: linux-pm@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Link: 
> https://lore.kernel.org/lkml/20200115184415.1726953-1-andres@anarazel.de/
> Signed-off-by: Andres Freund <andres@...razel.de>
Reviewed-by: Pandruvada, Srinivas <srinivas.pandruvada@...ux.intel.com>

> ---
>  drivers/thermal/intel/intel_pch_thermal.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/intel/intel_pch_thermal.c
> b/drivers/thermal/intel/intel_pch_thermal.c
> index 3b813ebb6ca1..7785e05f46f0 100644
> --- a/drivers/thermal/intel/intel_pch_thermal.c
> +++ b/drivers/thermal/intel/intel_pch_thermal.c
> @@ -26,6 +26,7 @@
>  #define PCH_THERMAL_DID_CNL_H	0xA379 /* CNL-H PCH */
>  #define PCH_THERMAL_DID_CNL_LP	0x02F9 /* CNL-LP PCH */
>  #define PCH_THERMAL_DID_CML_H	0X06F9 /* CML-H PCH */
> +#define PCH_THERMAL_DID_LWB	0xA1B1 /* Lewisburg PCH */
>  
>  /* Wildcat Point-LP  PCH Thermal registers */
>  #define WPT_TEMP	0x0000	/* Temperature */
> @@ -276,6 +277,7 @@ enum board_ids {
>  	board_skl,
>  	board_cnl,
>  	board_cml,
> +	board_lwb,
>  };
>  
>  static const struct board_info {
> @@ -301,7 +303,11 @@ static const struct board_info {
>  	[board_cml] = {
>  		.name = "pch_cometlake",
>  		.ops = &pch_dev_ops_wpt,
> -	}
> +	},
> +	[board_lwb] = {
> +		.name = "pch_lewisburg",
> +		.ops = &pch_dev_ops_wpt,
> +	},
>  };
>  
>  static int intel_pch_thermal_probe(struct pci_dev *pdev,
> @@ -415,6 +421,8 @@ static const struct pci_device_id
> intel_pch_thermal_id[] = {
>  		.driver_data = board_cnl, },
>  	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_CML_H),
>  		.driver_data = board_cml, },
> +	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_LWB),
> +		.driver_data = board_lwb, },
>  	{ 0, },
>  };
>  MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id);