On Wed, Nov 18, 2020 at 09:30:10PM +0100, Christian Eggers wrote: > Add control routines required for TX hardware time stamping. > > The KSZ9563 only supports one step time stamping > (HWTSTAMP_TX_ONESTEP_P2P), which requires linuxptp-2.0 or later. > > Currently, only P2P delay measurement is supported. See patchwork > discussion and comments in ksz9477_ptp_init() for details: > https://patchwork.ozlabs.org/project/netdev/patch/20201019172435.4416-8-ceggers@xxxxxxx/ > > Signed-off-by: Christian Eggers <ceggers@xxxxxxx> > --- Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx> > +static int ksz9477_set_hwtstamp_config(struct ksz_device *dev, int port, > + struct hwtstamp_config *config) > +{ > + struct ksz_port *prt = &dev->ports[port]; > + > + /* reserved for future extensions */ > + if (config->flags) > + return -EINVAL; > + > + switch (config->tx_type) { > + case HWTSTAMP_TX_OFF: > + prt->hwts_tx_en = false; > + break; > + case HWTSTAMP_TX_ONESTEP_P2P: > + prt->hwts_tx_en = true; > + break; > + default: > + return -ERANGE; > + } > + > + switch (config->rx_filter) { > + case HWTSTAMP_FILTER_NONE: > + break; > + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: > + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: > + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; > + break; > + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: > + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: > + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; > + break; > + case HWTSTAMP_FILTER_PTP_V2_EVENT: > + case HWTSTAMP_FILTER_PTP_V2_SYNC: > + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; > + break; > + case HWTSTAMP_FILTER_ALL: Putting anything in the same "case" statement as "default" is useless. > + default: > + config->rx_filter = HWTSTAMP_FILTER_NONE; > + return -ERANGE; > + } > + > + return 0; > +}
