tests: Test suspend/resume on active pipelines

Provide a test to verify the hardware completes a functional test whilst
performing a suspend resume cycle in parallel. Make use of the
/sys/power/pm_test functionality provided by CONFIG_PM_DEBUG to perform
the testing

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/tests/vsp-unit-test-0020.sh b/tests/vsp-unit-test-0020.sh
new file mode 100755
index 0000000..db383b5
--- /dev/null
+++ b/tests/vsp-unit-test-0020.sh
@@ -0,0 +1,92 @@
+#!/bin/sh
+
+#
+# Test power-management suspend/resume whilst pipelines are active
+#
+# Utilise the basic RPF->WPF packing test case as a measure that the hardware
+# is operable while we perform test suspend and resume, and verify that it is
+# still successful even with a suspend resume cycle in the middle of the test.
+#
+
+source vsp-lib.sh
+
+features="rpf.0 wpf.0"
+
+# These can be extracted from /sys/power/pm_test
+suspend_modes="freezer devices platform processors core"
+
+# This extended function performs the same
+# as it's non-extended name-sake - but runs the pipeline
+# for 300 frames. The suspend action occurs between frame #150~#200
+
+test_extended_wpf_packing() {
+	local format=$1
+
+	pipe_configure rpf-wpf 0 0
+	format_configure rpf-wpf 0 0 ARGB32 1024x768 $format
+
+	vsp_runner rpf.0 --count=300 &
+	vsp_runner wpf.0 --count=300 --skip=297
+
+	local result=$(compare_frames)
+	[ x$result == xpass ] && return 0 || return 1
+}
+
+test_hw_pipe() {
+	test_extended_wpf_packing RGB24
+}
+
+test_suspend_resume() {
+	local result
+	local test_pid
+
+	test_start "Testing active pipeline suspend/resume in suspend:$mode"
+
+	# Verify the test is available
+	grep -q $mode /sys/power/pm_test
+	if [ $? != 0 ]; then
+		test_complete skip
+		return
+	fi
+
+	# Set the hardware running in parallel while we suspend
+	test_hw_pipe &
+	test_pid=$!
+
+	# Make sure the pipeline has time to start
+	sleep 1
+
+	# Set the test mode
+	echo $mode > /sys/power/pm_test
+
+	# Commence suspend
+	# The pm_test framework will automatically resume after 5 seconds
+	echo mem > /sys/power/state
+
+	# Wait for the pipeline to complete
+	wait $test_pid
+	result=$?
+
+	if [ $result == 0 ]; then
+		test_complete pass
+	else
+		test_complete fail
+	fi
+}
+
+test_main() {
+	local mode
+
+	# Check for pm-suspend test option
+	if [ ! -e /sys/power/pm_test ] ; then
+		echo "$0: suspend/resume testing requires CONFIG_PM_DEBUG"
+		return
+	fi;
+
+	for mode in $suspend_modes ; do
+		test_suspend_resume $mode
+	done;
+}
+
+test_init $0 "$features"
+test_run