diff options
Diffstat (limited to 'include/uapi/linux/pps_gen.h')
| -rw-r--r-- | include/uapi/linux/pps_gen.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/uapi/linux/pps_gen.h b/include/uapi/linux/pps_gen.h new file mode 100644 index 000000000000..60a5d0fcfa68 --- /dev/null +++ b/include/uapi/linux/pps_gen.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * PPS generator API header + * + * Copyright (C) 2024 Rodolfo Giometti <giometti@enneenne.com> + */ + +#ifndef _PPS_GEN_H_ +#define _PPS_GEN_H_ + +#include <linux/types.h> +#include <linux/ioctl.h> + +/** + * struct pps_gen_event - the PPS generator events + * @event: the event type + * @sequence: the event sequence number + * + * Userspace can get the last PPS generator event by using the + * ioctl(pps_gen, PPS_GEN_FETCHEVENT, ...) syscall. + * The sequence field can be used to save the last event ID, while in the + * event field is stored the last event type. Currently known event is: + * + * PPS_GEN_EVENT_MISSEDPULSE : last pulse was not generated + */ +struct pps_gen_event { + unsigned int event; + unsigned int sequence; +}; + +#define PPS_GEN_EVENT_MISSEDPULSE 1 + +#define PPS_GEN_SETENABLE _IOW('p', 0xb1, unsigned int *) +#define PPS_GEN_USESYSTEMCLOCK _IOR('p', 0xb2, unsigned int *) +#define PPS_GEN_FETCHEVENT _IOR('p', 0xb3, struct pps_gen_event *) + +#endif /* _PPS_GEN_H_ */ |