1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * I2C slave tracepoints |
4 | * |
5 | * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. |
6 | */ |
7 | #undef TRACE_SYSTEM |
8 | #define TRACE_SYSTEM i2c_slave |
9 | |
10 | #if !defined(_TRACE_I2C_SLAVE_H) || defined(TRACE_HEADER_MULTI_READ) |
11 | #define _TRACE_I2C_SLAVE_H |
12 | |
13 | #include <linux/i2c.h> |
14 | #include <linux/tracepoint.h> |
15 | |
16 | TRACE_DEFINE_ENUM(I2C_SLAVE_READ_REQUESTED); |
17 | TRACE_DEFINE_ENUM(I2C_SLAVE_WRITE_REQUESTED); |
18 | TRACE_DEFINE_ENUM(I2C_SLAVE_READ_PROCESSED); |
19 | TRACE_DEFINE_ENUM(I2C_SLAVE_WRITE_RECEIVED); |
20 | TRACE_DEFINE_ENUM(I2C_SLAVE_STOP); |
21 | |
22 | #define show_event_type(type) \ |
23 | __print_symbolic(type, \ |
24 | { I2C_SLAVE_READ_REQUESTED, "RD_REQ" }, \ |
25 | { I2C_SLAVE_WRITE_REQUESTED, "WR_REQ" }, \ |
26 | { I2C_SLAVE_READ_PROCESSED, "RD_PRO" }, \ |
27 | { I2C_SLAVE_WRITE_RECEIVED, "WR_RCV" }, \ |
28 | { I2C_SLAVE_STOP, " STOP" }) |
29 | |
30 | TRACE_EVENT(i2c_slave, |
31 | TP_PROTO(const struct i2c_client *client, enum i2c_slave_event event, |
32 | __u8 *val, int cb_ret), |
33 | TP_ARGS(client, event, val, cb_ret), |
34 | TP_STRUCT__entry( |
35 | __field(int, adapter_nr ) |
36 | __field(int, ret ) |
37 | __field(__u16, addr ) |
38 | __field(__u16, len ) |
39 | __field(enum i2c_slave_event, event ) |
40 | __array(__u8, buf, 1) ), |
41 | |
42 | TP_fast_assign( |
43 | __entry->adapter_nr = client->adapter->nr; |
44 | __entry->addr = client->addr; |
45 | __entry->event = event; |
46 | __entry->ret = cb_ret; |
47 | switch (event) { |
48 | case I2C_SLAVE_READ_REQUESTED: |
49 | case I2C_SLAVE_READ_PROCESSED: |
50 | case I2C_SLAVE_WRITE_RECEIVED: |
51 | __entry->len = 1; |
52 | memcpy(__entry->buf, val, __entry->len); |
53 | break; |
54 | default: |
55 | __entry->len = 0; |
56 | break; |
57 | } |
58 | ), |
59 | TP_printk("i2c-%d a=%03x ret=%d %s [%*phD]" , |
60 | __entry->adapter_nr, __entry->addr, __entry->ret, |
61 | show_event_type(__entry->event), __entry->len, __entry->buf |
62 | )); |
63 | |
64 | #endif /* _TRACE_I2C_SLAVE_H */ |
65 | |
66 | /* This part must be outside protection */ |
67 | #include <trace/define_trace.h> |
68 | |