[Intel-wired-lan] [PATCH net v1] i40e: allow controlling PTP external clock features
Maciej Fijalkowski
maciej.fijalkowski at intel.com
Mon Nov 23 13:49:34 UTC 2020
On Mon, Nov 23, 2020 at 01:46:56PM +0000, Mateusz Palczewski wrote:
> From: Piotr Kwapulinski <piotr.kwapulinski at intel.com>
>
> Provide information what functions are supported by PTP pins and allow
> controlling them.
> Implemented in i40e_ptp_verify() and i40e_pps_configure().
> Previously it was not possible to control PTP external clock features.
Why you target that to 'net' tree? it's not a bug fix if you ask me, but a
feature implementation.
>
> Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski at intel.com>
> ---
> drivers/net/ethernet/intel/i40e/i40e_ptp.c | 16 ++++++++++++++--
> 1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_ptp.c b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
> index 26f583f..6182d42 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_ptp.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
> @@ -241,7 +241,15 @@ static void i40_ptp_reset_timing_events(struct i40e_pf *pf)
> static int i40e_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin,
> enum ptp_pin_function func, unsigned int chan)
I don't see i40e_ptp_verify in the upstream code. Am I missing something?
It also looks to me that you only make use of 1 out of 4 functions args.
This will produce compiler warnings.
> {
> - /* TODO: implement pin checking */
> + switch (func) {
> + case PTP_PF_NONE:
> + case PTP_PF_EXTTS:
> + case PTP_PF_PEROUT:
> + break;
> + case PTP_PF_PHYSYNC:
> + return -EOPNOTSUPP;
> + }
> +
> return 0;
> }
>
> @@ -486,7 +494,11 @@ static int i40e_pps_configure(struct ptp_clock_info *ptp,
> struct ptp_clock_request *rq,
> int on)
> {
Again, 'rq' is unused. Also it looks like it could return void.
> - /* TODO: implement PPS events */
> + struct i40e_pf *pf = container_of(ptp, struct i40e_pf, ptp_caps);
> +
> + if (!!on)
> + i40e_ptp_set_1pps_signal_hw(pf);
> +
> return 0;
> }
>
> --
> 2.17.1
>
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