Re: [RFC PATCH 1/3] pps: Add PPS_SETCLOCK ioctl

[Rodolfo Giometti]

On 27/06/2026 22:50, Gerik Kubiak wrote:
> Add the PPS_SETCLOCK ioctl to the pps driver and an associated
> pps_kclock_source structure used as an arugment in the ioctl. This ioctl
> allows userspace to specify the clock used in timestamping PPS events.
>
> Adds a pps_kclock_source structure for this ioctl. It contains one value,
> clock_id, which holds the requested clock source for subsequent PPS events.
>
> Signed-off-by: Gerik Kubiak <gerikkub@xxxxxxxxx>
> ---
>   include/uapi/linux/pps.h | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/include/uapi/linux/pps.h b/include/uapi/linux/pps.h
> index 009ebcd8ced5..db233511c6ef 100644
> --- a/include/uapi/linux/pps.h
> +++ b/include/uapi/linux/pps.h
> @@ -87,6 +87,10 @@ struct pps_kparams {
>   	struct pps_ktime clear_off_tu;	/* offset compensation for clear */
>   };
>   
> +struct pps_kclock_source {
> +	__u32 clock_id;  /* System clock id */
> +};
> +
>   /*
>    * 3.3 Mode bit definitions
>    */
> @@ -140,6 +144,7 @@ struct pps_bind_args {
>   	int consumer;	/* selected kernel consumer */
>   };
>   
> +
>   #include <linux/ioctl.h>

Don't add not needed empty lines.

>   
>   #define PPS_GETPARAMS		_IOR('p', 0xa1, struct pps_kparams *)
> @@ -147,5 +152,6 @@ struct pps_bind_args {
>   #define PPS_GETCAP		_IOR('p', 0xa3, int *)
>   #define PPS_FETCH		_IOWR('p', 0xa4, struct pps_fdata *)
>   #define PPS_KC_BIND		_IOW('p', 0xa5, struct pps_bind_args *)
> +#define PPS_SETCLOCK		_IOW('p', 0xa6, struct pps_clock_source *)

Why not merge this patch with patch 3?

>   
>   #endif /* _PPS_H_ */

Rodolfo

--
GNU/Linux Solutions                  e-mail: giometti@xxxxxxxxxxxx
Linux Device Driver                          giometti@xxxxxxxx
Embedded Systems                     phone:  +39 349 2432127
UNIX programming