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gerrit-public.fairphone.software / kernel / msm-5.4 / ad3793fc3945173f64d82d05d3ecde41f6c0435c / . / include / trace / events / i2c.h
blob: 86a401190df9dedec14bfcc7502b59cfc51d1f1b [file] [log] [blame]
Wolfram Sang22c78d12017-05-23 12:27:17 +0200[diff] [blame]1/* I2C message transfer tracepoints
David Howellsd9a83d62014-03-06 13:35:59 +0000[diff] [blame]2 *
3 * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#undef TRACE_SYSTEM
12#define TRACE_SYSTEM i2c
13
14#if !defined(_TRACE_I2C_H) || defined(TRACE_HEADER_MULTI_READ)
15#define _TRACE_I2C_H
16
17#include <linux/i2c.h>
18#include <linux/tracepoint.h>
19
20/*
Wolfram Sang22c78d12017-05-23 12:27:17 +0200[diff] [blame]21 * drivers/i2c/i2c-core-base.c
David Howellsd9a83d62014-03-06 13:35:59 +0000[diff] [blame]22 */
Steven Rostedt (Red Hat)8cf868a2016-11-28 13:03:21 -0500[diff] [blame]23extern int i2c_transfer_trace_reg(void);
David Howellsd9a83d62014-03-06 13:35:59 +0000[diff] [blame]24extern void i2c_transfer_trace_unreg(void);
25
26/*
27 * __i2c_transfer() write request
28 */
29TRACE_EVENT_FN(i2c_write,
30 TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
31 int num),
32 TP_ARGS(adap, msg, num),
33 TP_STRUCT__entry(
34 __field(int, adapter_nr )
35 __field(__u16, msg_nr )
36 __field(__u16, addr )
37 __field(__u16, flags )
38 __field(__u16, len )
39 __dynamic_array(__u8, buf, msg->len) ),
40 TP_fast_assign(
41 __entry->adapter_nr = adap->nr;
42 __entry->msg_nr = num;
43 __entry->addr = msg->addr;
44 __entry->flags = msg->flags;
45 __entry->len = msg->len;
46 memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
47 ),
48 TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
49 __entry->adapter_nr,
50 __entry->msg_nr,
51 __entry->addr,
52 __entry->flags,
53 __entry->len,
54 __entry->len, __get_dynamic_array(buf)
55 ),
56 i2c_transfer_trace_reg,
57 i2c_transfer_trace_unreg);
58
59/*
60 * __i2c_transfer() read request
61 */
62TRACE_EVENT_FN(i2c_read,
63 TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
64 int num),
65 TP_ARGS(adap, msg, num),
66 TP_STRUCT__entry(
67 __field(int, adapter_nr )
68 __field(__u16, msg_nr )
69 __field(__u16, addr )
70 __field(__u16, flags )
71 __field(__u16, len )
72 ),
73 TP_fast_assign(
74 __entry->adapter_nr = adap->nr;
75 __entry->msg_nr = num;
76 __entry->addr = msg->addr;
77 __entry->flags = msg->flags;
78 __entry->len = msg->len;
79 ),
80 TP_printk("i2c-%d #%u a=%03x f=%04x l=%u",
81 __entry->adapter_nr,
82 __entry->msg_nr,
83 __entry->addr,
84 __entry->flags,
85 __entry->len
86 ),
87 i2c_transfer_trace_reg,
88 i2c_transfer_trace_unreg);
89
90/*
91 * __i2c_transfer() read reply
92 */
93TRACE_EVENT_FN(i2c_reply,
94 TP_PROTO(const struct i2c_adapter *adap, const struct i2c_msg *msg,
95 int num),
96 TP_ARGS(adap, msg, num),
97 TP_STRUCT__entry(
98 __field(int, adapter_nr )
99 __field(__u16, msg_nr )
100 __field(__u16, addr )
101 __field(__u16, flags )
102 __field(__u16, len )
103 __dynamic_array(__u8, buf, msg->len) ),
104 TP_fast_assign(
105 __entry->adapter_nr = adap->nr;
106 __entry->msg_nr = num;
107 __entry->addr = msg->addr;
108 __entry->flags = msg->flags;
109 __entry->len = msg->len;
110 memcpy(__get_dynamic_array(buf), msg->buf, msg->len);
111 ),
112 TP_printk("i2c-%d #%u a=%03x f=%04x l=%u [%*phD]",
113 __entry->adapter_nr,
114 __entry->msg_nr,
115 __entry->addr,
116 __entry->flags,
117 __entry->len,
118 __entry->len, __get_dynamic_array(buf)
119 ),
120 i2c_transfer_trace_reg,
121 i2c_transfer_trace_unreg);
122
123/*
124 * __i2c_transfer() result
125 */
126TRACE_EVENT_FN(i2c_result,
127 TP_PROTO(const struct i2c_adapter *adap, int num, int ret),
128 TP_ARGS(adap, num, ret),
129 TP_STRUCT__entry(
130 __field(int, adapter_nr )
131 __field(__u16, nr_msgs )
132 __field(__s16, ret )
133 ),
134 TP_fast_assign(
135 __entry->adapter_nr = adap->nr;
136 __entry->nr_msgs = num;
137 __entry->ret = ret;
138 ),
139 TP_printk("i2c-%d n=%u ret=%d",
140 __entry->adapter_nr,
141 __entry->nr_msgs,
142 __entry->ret
143 ),
144 i2c_transfer_trace_reg,
145 i2c_transfer_trace_unreg);
146
David Howellsd9a83d62014-03-06 13:35:59 +0000[diff] [blame]147#endif /* _TRACE_I2C_H */
148
149/* This part must be outside protection */
150#include <trace/define_trace.h>