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net:phy:dp83640: Do not hardcode timestamping event edge

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Currently the external timestamping code is hardcoded to use the
rising edge even though the hardware has configurable event edge
detection. This patch changes the code to use falling edge detection
if PTP_FALLING_EDGE is set in the user supplied flags.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Sørensen 2014-02-03 15:36:50 +01:00 committed by David S. Miller
parent e2e2f51dd0
commit 80671bd2a9
1 changed files with 4 additions and 1 deletions
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5
drivers/net/phy/dp83640.c
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@ -437,7 +437,10 @@ static int ptp_dp83640_enable(struct ptp_clock_info *ptp,
if (on) {
gpio_num = gpio_tab[EXTTS0_GPIO + index];
evnt |= (gpio_num & EVNT_GPIO_MASK) << EVNT_GPIO_SHIFT;
evnt |= EVNT_RISE;
if (rq->extts.flags & PTP_FALLING_EDGE)
evnt |= EVNT_FALL;
else
evnt |= EVNT_RISE;
}
ext_write(0, phydev, PAGE5, PTP_EVNT, evnt);
return 0;