xref: /openbmc/linux/tools/testing/selftests/ptp/phc.sh (revision e021ae7f) 
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4ALL_TESTS="
5	settime
6	adjtime
7	adjfreq
8"
9DEV=$1
10
11##############################################################################
12# Sanity checks
13
14if [[ "$(id -u)" -ne 0 ]]; then
15	echo "SKIP: need root privileges"
16	exit 0
17fi
18
19if [[ "$DEV" == "" ]]; then
20	echo "SKIP: PTP device not provided"
21	exit 0
22fi
23
24require_command()
25{
26	local cmd=$1; shift
27
28	if [[ ! -x "$(command -v "$cmd")" ]]; then
29		echo "SKIP: $cmd not installed"
30		exit 1
31	fi
32}
33
34phc_sanity()
35{
36	phc_ctl $DEV get &> /dev/null
37
38	if [ $? != 0 ]; then
39		echo "SKIP: unknown clock $DEV: No such device"
40		exit 1
41	fi
42}
43
44require_command phc_ctl
45phc_sanity
46
47##############################################################################
48# Helpers
49
50# Exit status to return at the end. Set in case one of the tests fails.
51EXIT_STATUS=0
52# Per-test return value. Clear at the beginning of each test.
53RET=0
54
55check_err()
56{
57	local err=$1
58
59	if [[ $RET -eq 0 && $err -ne 0 ]]; then
60		RET=$err
61	fi
62}
63
64log_test()
65{
66	local test_name=$1
67
68	if [[ $RET -ne 0 ]]; then
69		EXIT_STATUS=1
70		printf "TEST: %-60s  [FAIL]\n" "$test_name"
71		return 1
72	fi
73
74	printf "TEST: %-60s  [ OK ]\n" "$test_name"
75	return 0
76}
77
78tests_run()
79{
80	local current_test
81
82	for current_test in ${TESTS:-$ALL_TESTS}; do
83		$current_test
84	done
85}
86
87##############################################################################
88# Tests
89
90settime_do()
91{
92	local res
93
94	res=$(phc_ctl $DEV set 0 wait 120.5 get 2> /dev/null \
95		| awk '/clock time is/{print $5}' \
96		| awk -F. '{print $1}')
97
98	(( res == 120 ))
99}
100
101adjtime_do()
102{
103	local res
104
105	res=$(phc_ctl $DEV set 0 adj 10 get 2> /dev/null \
106		| awk '/clock time is/{print $5}' \
107		| awk -F. '{print $1}')
108
109	(( res == 10 ))
110}
111
112adjfreq_do()
113{
114	local res
115
116	# Set the clock to be 1% faster
117	res=$(phc_ctl $DEV freq 10000000 set 0 wait 100.5 get 2> /dev/null \
118		| awk '/clock time is/{print $5}' \
119		| awk -F. '{print $1}')
120
121	(( res == 101 ))
122}
123
124##############################################################################
125
126cleanup()
127{
128	phc_ctl $DEV freq 0.0 &> /dev/null
129	phc_ctl $DEV set &> /dev/null
130}
131
132settime()
133{
134	RET=0
135
136	settime_do
137	check_err $?
138	log_test "settime"
139	cleanup
140}
141
142adjtime()
143{
144	RET=0
145
146	adjtime_do
147	check_err $?
148	log_test "adjtime"
149	cleanup
150}
151
152adjfreq()
153{
154	RET=0
155
156	adjfreq_do
157	check_err $?
158	log_test "adjfreq"
159	cleanup
160}
161
162trap cleanup EXIT
163
164tests_run
165
166exit $EXIT_STATUS
167