tests/kms_fbcon_fbt: Reduce execution time by not calling wait_until_enabled()

After unset all CRTCs is expected that FBC and PSR is disabled,
calling wait_until_enabled() will make it wait until timeout to it
return false and pass the test.

So instead lets implement is_disabled() hook, as the
kmstest_unset_all_crtcs() is a synchronous call, the features will
be already disabled after it, so no need to do any wait.

Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

2 files changed, 11 insertions, 0 deletions

diff --git a/lib/igt_psr.c b/lib/igt_psr.c
index 83ccacdd4..f92eff6ce 100644
--- a/lib/igt_psr.c
+++ b/lib/igt_psr.c
@@ -25,6 +25,16 @@
 #include "igt_sysfs.h"
 #include <errno.h>
 
+bool psr_disabled_check(int debugfs_fd)
+{
+	char buf[PSR_STATUS_MAX_LEN];
+
+	igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
+				sizeof(buf));
+
+	return strstr(buf, "PSR mode: disabled\n");
+}
+
 static bool psr_active_check(int debugfs_fd, enum psr_mode mode)
 {
 	char buf[PSR_STATUS_MAX_LEN];
diff --git a/lib/igt_psr.h b/lib/igt_psr.h
index ca3857367..02ce760b2 100644
--- a/lib/igt_psr.h
+++ b/lib/igt_psr.h
@@ -35,6 +35,7 @@ enum psr_mode {
 	PSR_MODE_2
 };
 
+bool psr_disabled_check(int debugfs_fd);
 bool psr_wait_entry(int debugfs_fd, enum psr_mode mode);
 bool psr_wait_update(int debugfs_fd, enum psr_mode mode);
 bool psr_long_wait_update(int debugfs_fd, enum psr_mode mode);