Root/
1 | /* |
2 | * PPS API kernel header |
3 | * |
4 | * Copyright (C) 2009 Rodolfo Giometti <giometti@linux.it> |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | */ |
20 | |
21 | #include <linux/pps.h> |
22 | |
23 | #include <linux/cdev.h> |
24 | #include <linux/device.h> |
25 | #include <linux/time.h> |
26 | |
27 | /* |
28 | * Global defines |
29 | */ |
30 | |
31 | /* The specific PPS source info */ |
32 | struct pps_source_info { |
33 | char name[PPS_MAX_NAME_LEN]; /* simbolic name */ |
34 | char path[PPS_MAX_NAME_LEN]; /* path of connected device */ |
35 | int mode; /* PPS's allowed mode */ |
36 | |
37 | void (*echo)(int source, int event, void *data); /* PPS echo function */ |
38 | |
39 | struct module *owner; |
40 | struct device *dev; |
41 | }; |
42 | |
43 | /* The main struct */ |
44 | struct pps_device { |
45 | struct pps_source_info info; /* PSS source info */ |
46 | |
47 | struct pps_kparams params; /* PPS's current params */ |
48 | |
49 | __u32 assert_sequence; /* PPS' assert event seq # */ |
50 | __u32 clear_sequence; /* PPS' clear event seq # */ |
51 | struct pps_ktime assert_tu; |
52 | struct pps_ktime clear_tu; |
53 | int current_mode; /* PPS mode at event time */ |
54 | |
55 | int go; /* PPS event is arrived? */ |
56 | wait_queue_head_t queue; /* PPS event queue */ |
57 | |
58 | unsigned int id; /* PPS source unique ID */ |
59 | struct cdev cdev; |
60 | struct device *dev; |
61 | int devno; |
62 | struct fasync_struct *async_queue; /* fasync method */ |
63 | spinlock_t lock; |
64 | |
65 | atomic_t usage; /* usage count */ |
66 | }; |
67 | |
68 | /* |
69 | * Global variables |
70 | */ |
71 | |
72 | extern spinlock_t pps_idr_lock; |
73 | extern struct idr pps_idr; |
74 | extern struct timespec pps_irq_ts[]; |
75 | |
76 | extern struct device_attribute pps_attrs[]; |
77 | |
78 | /* |
79 | * Exported functions |
80 | */ |
81 | |
82 | struct pps_device *pps_get_source(int source); |
83 | extern void pps_put_source(struct pps_device *pps); |
84 | extern int pps_register_source(struct pps_source_info *info, |
85 | int default_params); |
86 | extern void pps_unregister_source(int source); |
87 | extern int pps_register_cdev(struct pps_device *pps); |
88 | extern void pps_unregister_cdev(struct pps_device *pps); |
89 | extern void pps_event(int source, struct pps_ktime *ts, int event, void *data); |
90 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9