[PATCH i-g-t 2/2] tests/intel/kms_ccs: add hiberbate test

[Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>]

Add hibernate test which bring entire system down for short
hibernate. This mode is added to suspend tests to be run
manually with '-r' flag because this is not ci friendly test,
on hibernate ci would lose connection to the hibernated box.

For this test to work kernel resume point need to be set, from
kernel command line is checked if there is found something along
the lines of "resume=/dev/nvme0n1p2" or so to verify hibernate
will be successful.

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
---
 tests/intel/kms_ccs.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/tests/intel/kms_ccs.c b/tests/intel/kms_ccs.c
index 3e9a57863..d720de04a 100644
--- a/tests/intel/kms_ccs.c
+++ b/tests/intel/kms_ccs.c
@@ -190,6 +190,7 @@ typedef struct {
 	bool user_seed;
 	enum igt_commit_style commit;
 	int fb_list_length;
+	bool do_hibernate;
 	struct {
 		struct igt_fb fb;
 		int width, height;
@@ -839,8 +840,17 @@ static bool try_config(data_t *data, enum test_fb_flags fb_flags,
 
 	if (ret == 0 && !(fb_flags & TEST_BAD_ROTATION_90) && crc) {
 		if (data->flags & TEST_SUSPEND && fb_flags & FB_COMPRESSED) {
-			igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
-						      SUSPEND_TEST_NONE);
+			if (data->do_hibernate) {
+				igt_require_f(igt_pm_check_hibernation_support(),
+					      "Kernel is not cofigured for resume\n");
+				igt_require_f(igt_pm_ensure_grub_boots_same_kernel(),
+					      "Couldn't find correct kernel in grub.cfg\n");
+				igt_system_suspend_autoresume(SUSPEND_STATE_DISK,
+							      SUSPEND_TEST_NONE);
+			} else {
+				igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
+							      SUSPEND_TEST_NONE);
+			}
 
 			/* on resume check flat ccs is still compressed */
 			if (is_xe_device(data->drm_fd) &&
@@ -1044,6 +1054,9 @@ static int opt_handler(int opt, int opt_index, void *opt_data)
 		data->user_seed = true;
 		data->seed = strtoul(optarg, NULL, 0);
 		break;
+	case 'r':
+		data->do_hibernate = true;
+		break;
 	default:
 		return IGT_OPT_HANDLER_ERROR;
 	}
@@ -1056,9 +1069,10 @@ static data_t data;
 static const char *help_str =
 "  -c\t\tCheck the presence of compression meta-data\n"
 "  -s <seed>\tSeed for random number generator\n"
+"  -r\t\tOn suspend test do full hibernate with reboot\n"
 ;
 
-igt_main_args("cs:", NULL, help_str, opt_handler, &data)
+igt_main_args("csr:", NULL, help_str, opt_handler, &data)
 {
 	igt_fixture {
 		data.drm_fd = drm_open_driver_master(DRIVER_INTEL | DRIVER_XE);
-- 
2.45.2