linux-kernel - Re: [PATCH v1 3/4] pps: generators: tio: Introduce Intel Elkhart Lake PSE TIO

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Message-ID: <c52718b2-138d-48ec-9b79-e8e07549a069@enneenne.com>
Date: Wed, 26 Feb 2025 08:51:08 +0100
From: Rodolfo Giometti <giometti@...eenne.com>
To: Raag Jadav <raag.jadav@...el.com>, lee@...nel.org,
 gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com,
 raymond.tan@...el.com
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/4] pps: generators: tio: Introduce Intel Elkhart Lake
 PSE TIO

On 26/02/25 07:15, Raag Jadav wrote:
> Add initial support for Intel Elkhart Lake PSE TIO controller.
> 
> Signed-off-by: Raag Jadav <raag.jadav@...el.com>

Acked-by: Rodolfo Giometti <giometti@...eenne.com>

> ---
>   drivers/pps/generators/pps_gen_tio.c | 17 ++++++++++++++++-
>   drivers/pps/generators/pps_gen_tio.h |  5 +++++
>   2 files changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pps/generators/pps_gen_tio.c b/drivers/pps/generators/pps_gen_tio.c
> index 89b08301d21e..8339d8c8f8bb 100644
> --- a/drivers/pps/generators/pps_gen_tio.c
> +++ b/drivers/pps/generators/pps_gen_tio.c
> @@ -22,6 +22,14 @@
>   
>   #include "pps_gen_tio.h"
>   
> +static const struct pps_tio_data ehl_pse_data = {
> +	.regs = {
> +		.ctl = TIOCTL_PSE,
> +		.compv = TIOCOMPV_PSE,
> +		.ec = TIOEC_PSE,
> +	},
> +};
> +
>   static const struct pps_tio_data pmc_data = {
>   	.regs = {
>   		.ctl = TIOCTL_PMC,
> @@ -240,9 +248,16 @@ static const struct acpi_device_id intel_pmc_tio_acpi_match[] = {
>   };
>   MODULE_DEVICE_TABLE(acpi, intel_pmc_tio_acpi_match);
>   
> +static const struct platform_device_id pps_gen_tio_ids[] = {
> +	{ "pps-gen-tio", (kernel_ulong_t)&ehl_pse_data },
> +	{ }
> +};
> +MODULE_DEVICE_TABLE(platform, pps_gen_tio_ids);
> +
>   static struct platform_driver pps_gen_tio_driver = {
>   	.probe          = pps_gen_tio_probe,
>   	.remove         = pps_gen_tio_remove,
> +	.id_table	= pps_gen_tio_ids,
>   	.driver         = {
>   		.name                   = "intel-pps-gen-tio",
>   		.acpi_match_table       = intel_pmc_tio_acpi_match,
> @@ -255,5 +270,5 @@ MODULE_AUTHOR("Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>");
>   MODULE_AUTHOR("Pandith N <pandith.n@...el.com>");
>   MODULE_AUTHOR("Thejesh Reddy T R <thejesh.reddy.t.r@...el.com>");
>   MODULE_AUTHOR("Subramanian Mohan <subramanian.mohan@...el.com>");
> -MODULE_DESCRIPTION("Intel PMC Time-Aware IO Generator Driver");
> +MODULE_DESCRIPTION("Intel Time-Aware IO Generator Driver");
>   MODULE_LICENSE("GPL");
> diff --git a/drivers/pps/generators/pps_gen_tio.h b/drivers/pps/generators/pps_gen_tio.h
> index e652f976e455..bbf5b994e7ff 100644
> --- a/drivers/pps/generators/pps_gen_tio.h
> +++ b/drivers/pps/generators/pps_gen_tio.h
> @@ -14,6 +14,11 @@
>   #include <linux/pps_gen_kernel.h>
>   #include <linux/spinlock_types.h>
>   
> +/* EHL PSE Registers */
> +#define TIOCTL_PSE			0x00
> +#define TIOCOMPV_PSE			0x04
> +#define TIOEC_PSE			0x24
> +
>   /* PMC Registers */
>   #define TIOCTL_PMC			0x00
>   #define TIOCOMPV_PMC			0x10

-- 
GNU/Linux Solutions                  e-mail: giometti@...eenne.com
Linux Device Driver                          giometti@...ux.it
Embedded Systems                     phone:  +39 349 2432127
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