PTP_CLOCK_GETCAPS 128 drivers/ptp/ptp_chardev.c case PTP_CLOCK_GETCAPS: PTP_CLOCK_GETCAPS 262 tools/testing/selftests/ptp/testptp.c if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) { PTP_CLOCK_GETCAPS 376 tools/testing/selftests/ptp/testptp.c if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) {