1eae9d2baSRodolfo Giometti /* 2eae9d2baSRodolfo Giometti * PPS API kernel header 3eae9d2baSRodolfo Giometti * 4eae9d2baSRodolfo Giometti * Copyright (C) 2009 Rodolfo Giometti <[email protected]> 5eae9d2baSRodolfo Giometti * 6eae9d2baSRodolfo Giometti * This program is free software; you can redistribute it and/or modify 7eae9d2baSRodolfo Giometti * it under the terms of the GNU General Public License as published by 8eae9d2baSRodolfo Giometti * the Free Software Foundation; either version 2 of the License, or 9eae9d2baSRodolfo Giometti * (at your option) any later version. 10eae9d2baSRodolfo Giometti * 11eae9d2baSRodolfo Giometti * This program is distributed in the hope that it will be useful, 12eae9d2baSRodolfo Giometti * but WITHOUT ANY WARRANTY; without even the implied warranty of 13eae9d2baSRodolfo Giometti * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14eae9d2baSRodolfo Giometti * GNU General Public License for more details. 15eae9d2baSRodolfo Giometti * 16eae9d2baSRodolfo Giometti * You should have received a copy of the GNU General Public License 17eae9d2baSRodolfo Giometti * along with this program; if not, write to the Free Software 18eae9d2baSRodolfo Giometti * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19eae9d2baSRodolfo Giometti */ 20eae9d2baSRodolfo Giometti 217a21a3ccSAlexander Gordeev #ifndef LINUX_PPS_KERNEL_H 227a21a3ccSAlexander Gordeev #define LINUX_PPS_KERNEL_H 237a21a3ccSAlexander Gordeev 24eae9d2baSRodolfo Giometti #include <linux/pps.h> 25eae9d2baSRodolfo Giometti 26eae9d2baSRodolfo Giometti #include <linux/cdev.h> 27eae9d2baSRodolfo Giometti #include <linux/device.h> 28eae9d2baSRodolfo Giometti #include <linux/time.h> 29eae9d2baSRodolfo Giometti 30eae9d2baSRodolfo Giometti /* 31eae9d2baSRodolfo Giometti * Global defines 32eae9d2baSRodolfo Giometti */ 33eae9d2baSRodolfo Giometti 34eae9d2baSRodolfo Giometti /* The specific PPS source info */ 35eae9d2baSRodolfo Giometti struct pps_source_info { 36eae9d2baSRodolfo Giometti char name[PPS_MAX_NAME_LEN]; /* simbolic name */ 37eae9d2baSRodolfo Giometti char path[PPS_MAX_NAME_LEN]; /* path of connected device */ 38eae9d2baSRodolfo Giometti int mode; /* PPS's allowed mode */ 39eae9d2baSRodolfo Giometti 40eae9d2baSRodolfo Giometti void (*echo)(int source, int event, void *data); /* PPS echo function */ 41eae9d2baSRodolfo Giometti 42eae9d2baSRodolfo Giometti struct module *owner; 43eae9d2baSRodolfo Giometti struct device *dev; 44eae9d2baSRodolfo Giometti }; 45eae9d2baSRodolfo Giometti 46eae9d2baSRodolfo Giometti /* The main struct */ 47eae9d2baSRodolfo Giometti struct pps_device { 48eae9d2baSRodolfo Giometti struct pps_source_info info; /* PSS source info */ 49eae9d2baSRodolfo Giometti 50eae9d2baSRodolfo Giometti struct pps_kparams params; /* PPS's current params */ 51eae9d2baSRodolfo Giometti 52eae9d2baSRodolfo Giometti __u32 assert_sequence; /* PPS' assert event seq # */ 53eae9d2baSRodolfo Giometti __u32 clear_sequence; /* PPS' clear event seq # */ 54eae9d2baSRodolfo Giometti struct pps_ktime assert_tu; 55eae9d2baSRodolfo Giometti struct pps_ktime clear_tu; 56eae9d2baSRodolfo Giometti int current_mode; /* PPS mode at event time */ 57eae9d2baSRodolfo Giometti 58*3003d55bSAlexander Gordeev unsigned int last_ev; /* last PPS event id */ 59eae9d2baSRodolfo Giometti wait_queue_head_t queue; /* PPS event queue */ 60eae9d2baSRodolfo Giometti 61eae9d2baSRodolfo Giometti unsigned int id; /* PPS source unique ID */ 62eae9d2baSRodolfo Giometti struct cdev cdev; 63eae9d2baSRodolfo Giometti struct device *dev; 64eae9d2baSRodolfo Giometti int devno; 65eae9d2baSRodolfo Giometti struct fasync_struct *async_queue; /* fasync method */ 66eae9d2baSRodolfo Giometti spinlock_t lock; 67eae9d2baSRodolfo Giometti 68eae9d2baSRodolfo Giometti atomic_t usage; /* usage count */ 69eae9d2baSRodolfo Giometti }; 70eae9d2baSRodolfo Giometti 71eae9d2baSRodolfo Giometti /* 72eae9d2baSRodolfo Giometti * Global variables 73eae9d2baSRodolfo Giometti */ 74eae9d2baSRodolfo Giometti 75eae9d2baSRodolfo Giometti extern spinlock_t pps_idr_lock; 76eae9d2baSRodolfo Giometti extern struct idr pps_idr; 77eae9d2baSRodolfo Giometti 78eae9d2baSRodolfo Giometti extern struct device_attribute pps_attrs[]; 79eae9d2baSRodolfo Giometti 80eae9d2baSRodolfo Giometti /* 81eae9d2baSRodolfo Giometti * Exported functions 82eae9d2baSRodolfo Giometti */ 83eae9d2baSRodolfo Giometti 84eae9d2baSRodolfo Giometti struct pps_device *pps_get_source(int source); 85eae9d2baSRodolfo Giometti extern void pps_put_source(struct pps_device *pps); 86eae9d2baSRodolfo Giometti extern int pps_register_source(struct pps_source_info *info, 87eae9d2baSRodolfo Giometti int default_params); 88eae9d2baSRodolfo Giometti extern void pps_unregister_source(int source); 89eae9d2baSRodolfo Giometti extern int pps_register_cdev(struct pps_device *pps); 90eae9d2baSRodolfo Giometti extern void pps_unregister_cdev(struct pps_device *pps); 91eae9d2baSRodolfo Giometti extern void pps_event(int source, struct pps_ktime *ts, int event, void *data); 927a21a3ccSAlexander Gordeev 937a21a3ccSAlexander Gordeev #endif /* LINUX_PPS_KERNEL_H */ 94