linux-kernel - Re: [PATCH v3 2/3] hwmon: (peci/cputemp) Add Intel Sapphire Rapids support

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Message-ID: <f3e6303e867b7a335289bf2ea3aacec5a637fb8b.camel@intel.com>
Date:   Wed, 19 Jul 2023 20:01:01 +0000
From:   "Winiarska, Iwona" <iwona.winiarska@...el.com>
To:     "linux@...ck-us.net" <linux@...ck-us.net>,
        "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Solanki, Naresh" <naresh.solanki@...ements.com>,
        "jdelvare@...e.com" <jdelvare@...e.com>
CC:     "Rudolph, Patrick" <patrick.rudolph@...ements.com>
Subject: Re: [PATCH v3 2/3] hwmon: (peci/cputemp) Add Intel Sapphire Rapids
 support

On Wed, 2023-07-19 at 20:41 +0200, Naresh Solanki wrote:
> From: Patrick Rudolph <patrick.rudolph@...ements.com>
> 
> Add support to read DTS for reading Intel Sapphire Rapids platform.
> 
> Signed-off-by: Patrick Rudolph <patrick.rudolph@...ements.com>
> Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
> Acked-by: Guenter Roeck <linux@...ck-us.net>

Reviewed-by: Iwona Winiarska <iwona.winiarska@...el.com>

Thanks
-Iwona

> ---
> Chagnes in V3:
> - Update Acked-by in commit message.
> Changes in V2:
> - Refactored from previous patchset as seperate patch based on subsystem.
> ---
>  drivers/hwmon/peci/cputemp.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/drivers/hwmon/peci/cputemp.c b/drivers/hwmon/peci/cputemp.c
> index e5b65a382772..a812c15948d9 100644
> --- a/drivers/hwmon/peci/cputemp.c
> +++ b/drivers/hwmon/peci/cputemp.c
> @@ -363,6 +363,7 @@ static int init_core_mask(struct peci_cputemp *priv)
>         switch (peci_dev->info.model) {
>         case INTEL_FAM6_ICELAKE_X:
>         case INTEL_FAM6_ICELAKE_D:
> +       case INTEL_FAM6_SAPPHIRERAPIDS_X:
>                 ret = peci_ep_pci_local_read(peci_dev, 0, reg->bus, reg->dev,
>                                              reg->func, reg->offset + 4,
> &data);
>                 if (ret)
> @@ -531,6 +532,13 @@ static struct resolved_cores_reg resolved_cores_reg_icx =
> {
>         .offset = 0xd0,
>  };
>  
> +static struct resolved_cores_reg resolved_cores_reg_spr = {
> +       .bus = 31,
> +       .dev = 30,
> +       .func = 6,
> +       .offset = 0x80,
> +};
> +
>  static const struct cpu_info cpu_hsx = {
>         .reg            = &resolved_cores_reg_hsx,
>         .min_peci_revision = 0x33,
> @@ -549,6 +557,12 @@ static const struct cpu_info cpu_icx = {
>         .thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
>  };
>  
> +static const struct cpu_info cpu_spr = {
> +       .reg            = &resolved_cores_reg_spr,
> +       .min_peci_revision = 0x40,
> +       .thermal_margin_to_millidegree = &dts_ten_dot_six_to_millidegree,
> +};
> +
>  static const struct auxiliary_device_id peci_cputemp_ids[] = {
>         {
>                 .name = "peci_cpu.cputemp.hsx",
> @@ -574,6 +588,10 @@ static const struct auxiliary_device_id
> peci_cputemp_ids[] = {
>                 .name = "peci_cpu.cputemp.icxd",
>                 .driver_data = (kernel_ulong_t)&cpu_icx,
>         },
> +       {
> +               .name = "peci_cpu.cputemp.spr",
> +               .driver_data = (kernel_ulong_t)&cpu_spr,
> +       },
>         { }
>  };
>  MODULE_DEVICE_TABLE(auxiliary, peci_cputemp_ids);