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authorLuwei Zhou <b45643@freescale.com>2014-10-10 09:15:30 +0400
committerDavid S. Miller <davem@davemloft.net>2014-10-14 22:45:08 +0400
commit278d24047891a1bf4a98128eaa8ecafd019e58c2 (patch)
tree57cb9578e7e20ab6700a715e67834d08b399a11a /drivers/net/ethernet/freescale/fec.h
parent89bddcda7e4f4ff2586e736427405115c362bed4 (diff)
downloadlinux-278d24047891a1bf4a98128eaa8ecafd019e58c2.tar.xz
net: fec: ptp: Enable PPS output based on ptp clock
FEC ptp timer has 4 channel compare/trigger function. It can be used to enable pps output. The pulse would be ouput high exactly on N second. The pulse ouput high on compare event mode is used to produce pulse per second. The pulse width would be one cycle based on ptp timer clock source.Since 31-bit ptp hardware timer is used, the timer will wrap more than 2 seconds. We need to reload the compare compare event about every 1 second. Signed-off-by: Luwei Zhou <b45643@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/fec.h')
-rw-r--r--drivers/net/ethernet/freescale/fec.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index b0e60258d403..1e65917a9381 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -487,12 +487,19 @@ struct fec_enet_private {
/* ptp clock period in ns*/
unsigned int ptp_inc;
+
+ /* pps */
+ int pps_channel;
+ unsigned int reload_period;
+ int pps_enable;
+ unsigned int next_counter;
};
void fec_ptp_init(struct platform_device *pdev);
void fec_ptp_start_cyclecounter(struct net_device *ndev);
int fec_ptp_set(struct net_device *ndev, struct ifreq *ifr);
int fec_ptp_get(struct net_device *ndev, struct ifreq *ifr);
+uint fec_ptp_check_pps_event(struct fec_enet_private *fep);
/****************************************************************************/
#endif /* FEC_H */