[igt-dev] [PATCH i-g-t] tests/psr: Skip if PSR cannot be enabled for the current mode.

[Dhinakaran Pandiyan]

PSR tests on ICL fail waiting for PSR to become active, whereas the
driver does not enable it on the HW due to unmet timing requirements
[  482.485873] [drm:intel_dp_compute_config [i915]] PSR condition failed: PSR setup time (330 us) too long
We should probably bring back the kernel patch that programmed an alternate
mode, but skip tests for now.

Cc: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
---
 tests/kms_psr.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tests/kms_psr.c b/tests/kms_psr.c
index 218b3960..89118ad4 100644
--- a/tests/kms_psr.c
+++ b/tests/kms_psr.c
@@ -193,11 +193,19 @@ static bool sink_support(data_t *data)
 	char buf[512];
 
 	igt_debugfs_read(data->drm_fd, "i915_edp_psr_status", buf);
-
 	return data->with_psr_disabled ||
 		strstr(buf, "Sink_Support: yes\n");
 }
 
+static bool mode_support(data_t *data)
+{
+	char buf[512];
+
+	igt_debugfs_read(data->drm_fd, "i915_edp_psr_status", buf);
+	return data->with_psr_disabled ||
+		strstr(buf, "Enabled: yes\n");
+}
+
 static bool psr_wait_entry_if_enabled(data_t *data)
 {
 	if (data->with_psr_disabled)
@@ -422,6 +430,8 @@ int main(int argc, char *argv[])
 		drm_intel_bufmgr_gem_enable_reuse(data.bufmgr);
 
 		display_init(&data);
+		igt_require_f(mode_support(&data),
+			     "PSR not enabled for current mode\n");
 	}
 
 	igt_subtest("basic") {
-- 
2.17.1