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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * I2C slave tracepoints4 *5 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.6 */7#undef TRACE_SYSTEM8#define TRACE_SYSTEM i2c_slave9 10#if !defined(_TRACE_I2C_SLAVE_H) || defined(TRACE_HEADER_MULTI_READ)11#define _TRACE_I2C_SLAVE_H12 13#include <linux/i2c.h>14#include <linux/tracepoint.h>15 16TRACE_DEFINE_ENUM(I2C_SLAVE_READ_REQUESTED);17TRACE_DEFINE_ENUM(I2C_SLAVE_WRITE_REQUESTED);18TRACE_DEFINE_ENUM(I2C_SLAVE_READ_PROCESSED);19TRACE_DEFINE_ENUM(I2C_SLAVE_WRITE_RECEIVED);20TRACE_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 30TRACE_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->buf62 ));63 64#endif /* _TRACE_I2C_SLAVE_H */65 66/* This part must be outside protection */67#include <trace/define_trace.h>68