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Code Issues Releases Activity

Switch polarity of PPS events.

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PR:		196897
Submitted by:	ian @
MFC after:	1 week
This commit is contained in:
Hans Petter Selasky 2015-03-08 08:34:49 +00:00
parent 8a502e7434
commit efccd9f054
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=279773
1 changed files with 8 additions and 3 deletions
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11
sys/dev/usb/serial/usb_serial.c
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@ -1102,14 +1102,19 @@ ucom_cfg_status_change(struct usb_proc_msg *_task)
sc->sc_msr = new_msr; sc->sc_msr = new_msr;
sc->sc_lsr = new_lsr; sc->sc_lsr = new_lsr;
/* time pulse counting support */ /*
* Time pulse counting support. Note that both CTS and DCD are
* active-low signals. The status bit is high to indicate that
* the signal on the line is low, which corresponds to a PPS
* clear event.
*/
switch(ucom_pps_mode) { switch(ucom_pps_mode) {
case 1: case 1:
if ((sc->sc_pps.ppsparam.mode & PPS_CAPTUREBOTH) && if ((sc->sc_pps.ppsparam.mode & PPS_CAPTUREBOTH) &&
(msr_delta & SER_CTS)) { (msr_delta & SER_CTS)) {
pps_capture(&sc->sc_pps); pps_capture(&sc->sc_pps);
pps_event(&sc->sc_pps, (sc->sc_msr & SER_CTS) ? pps_event(&sc->sc_pps, (sc->sc_msr & SER_CTS) ?
PPS_CAPTUREASSERT : PPS_CAPTURECLEAR); PPS_CAPTURECLEAR : PPS_CAPTUREASSERT);
} }
break; break;
case 2: case 2:
@ -1117,7 +1122,7 @@ ucom_cfg_status_change(struct usb_proc_msg *_task)
(msr_delta & SER_DCD)) { (msr_delta & SER_DCD)) {
pps_capture(&sc->sc_pps); pps_capture(&sc->sc_pps);
pps_event(&sc->sc_pps, (sc->sc_msr & SER_DCD) ? pps_event(&sc->sc_pps, (sc->sc_msr & SER_DCD) ?
PPS_CAPTUREASSERT : PPS_CAPTURECLEAR); PPS_CAPTURECLEAR : PPS_CAPTUREASSERT);
} }
break; break;
default: default: