[igt-dev] [PATCH i-g-t 2/2] tests/kms_psr2_su: Print debugfs when skipping test

José Roberto de Souza
2020-05-30T01:15:06Z

This tests is being sporadically skipped in CI as it is not due
"PSR sink not reliable: yes" lets print the i915_edp_psr_status to
find out the reason.
This can be reverted afterwards.

Reference: https://gitlab.freedesktop.org/drm/intel/-/issues/1911
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
lib/igt_psr.c | 13 +++++++++++++
lib/igt_psr.h | 1 +
tests/kms_psr2_su.c | 2 ++
3 files changed, 16 insertions(+)

diff --git a/lib/igt_psr.c b/lib/igt_psr.c
index 956f6219c..8c2f4ce6c 100644
--- a/lib/igt_psr.c
+++ b/lib/igt_psr.c
@@ -229,3 +229,16 @@ bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks)
{
return igt_wait(psr2_read_last_num_su_blocks_val(debugfs_fd, num_su_blocks), 40, 1);
}
+
+void psr_print_debugfs(int debugfs_fd)
+{
+ char buf[PSR_STATUS_MAX_LEN];
+ int ret;
+
+ ret = igt_debugfs_simple_read(debugfs_fd, "i915_edp_psr_status", buf,
+ sizeof(buf));
+ if (ret < 0)
+ return;
+
+ igt_debug("%s", buf);
+}
diff --git a/lib/igt_psr.h b/lib/igt_psr.h
index b2afb6119..8368ecb49 100644
--- a/lib/igt_psr.h
+++ b/lib/igt_psr.h
@@ -43,5 +43,6 @@ bool psr_enable(int device, int debugfs_fd, enum psr_mode);
bool psr_disable(int device, int debugfs_fd);
bool psr_sink_support(int device, int debugfs_fd, enum psr_mode mode);
bool psr2_wait_su(int debugfs_fd, uint16_t *num_su_blocks);
+void psr_print_debugfs(int debugfs_fd);

#endif
diff --git a/tests/kms_psr2_su.c b/tests/kms_psr2_su.c
index a834a96e3..0ee02fc8b 100644
--- a/tests/kms_psr2_su.c
+++ b/tests/kms_psr2_su.c
@@ -261,6 +261,8 @@ igt_main
prepare(&data);
r = psr_wait_entry(data.debugfs_fd, PSR_MODE_2);
cleanup(&data);
+ if (!r)
+ psr_print_debugfs(data.debugfs_fd);
igt_require_f(r, "PSR2 can not be enabled\n");

/* blocking timerfd */
--
2.26.2