summaryrefslogtreecommitdiffstats
path: root/include/trace/events/i2c_slave.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/trace/events/i2c_slave.h')
-rw-r--r--include/trace/events/i2c_slave.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/include/trace/events/i2c_slave.h b/include/trace/events/i2c_slave.h
new file mode 100644
index 0000000000..811166abbe
--- /dev/null
+++ b/include/trace/events/i2c_slave.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * I2C slave tracepoints
+ *
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM i2c_slave
+
+#if !defined(_TRACE_I2C_SLAVE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_I2C_SLAVE_H
+
+#include <linux/i2c.h>
+#include <linux/tracepoint.h>
+
+TRACE_DEFINE_ENUM(I2C_SLAVE_READ_REQUESTED);
+TRACE_DEFINE_ENUM(I2C_SLAVE_WRITE_REQUESTED);
+TRACE_DEFINE_ENUM(I2C_SLAVE_READ_PROCESSED);
+TRACE_DEFINE_ENUM(I2C_SLAVE_WRITE_RECEIVED);
+TRACE_DEFINE_ENUM(I2C_SLAVE_STOP);
+
+#define show_event_type(type) \
+ __print_symbolic(type, \
+ { I2C_SLAVE_READ_REQUESTED, "RD_REQ" }, \
+ { I2C_SLAVE_WRITE_REQUESTED, "WR_REQ" }, \
+ { I2C_SLAVE_READ_PROCESSED, "RD_PRO" }, \
+ { I2C_SLAVE_WRITE_RECEIVED, "WR_RCV" }, \
+ { I2C_SLAVE_STOP, " STOP" })
+
+TRACE_EVENT(i2c_slave,
+ TP_PROTO(const struct i2c_client *client, enum i2c_slave_event event,
+ __u8 *val, int cb_ret),
+ TP_ARGS(client, event, val, cb_ret),
+ TP_STRUCT__entry(
+ __field(int, adapter_nr )
+ __field(int, ret )
+ __field(__u16, addr )
+ __field(__u16, len )
+ __field(enum i2c_slave_event, event )
+ __array(__u8, buf, 1) ),
+
+ TP_fast_assign(
+ __entry->adapter_nr = client->adapter->nr;
+ __entry->addr = client->addr;
+ __entry->event = event;
+ __entry->ret = cb_ret;
+ switch (event) {
+ case I2C_SLAVE_READ_REQUESTED:
+ case I2C_SLAVE_READ_PROCESSED:
+ case I2C_SLAVE_WRITE_RECEIVED:
+ __entry->len = 1;
+ memcpy(__entry->buf, val, __entry->len);
+ break;
+ default:
+ __entry->len = 0;
+ break;
+ }
+ ),
+ TP_printk("i2c-%d a=%03x ret=%d %s [%*phD]",
+ __entry->adapter_nr, __entry->addr, __entry->ret,
+ show_event_type(__entry->event), __entry->len, __entry->buf
+ ));
+
+#endif /* _TRACE_I2C_SLAVE_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>