[Intel-gfx] [PATCH i-g-t 3/5] tests/pm_dc: Added test for DC6 during PSR

[Anshuman Gupta]

From: Jyoti Yadav <jyoti.r.yadav at intel.com>

This patch add subtest to check DC6 entry on PSR for the supported
platforms.

v2: Rename the subtest with more meaningful name.
v3: Rebased.
v4: Rebased, to fix compilation error in psr_enable().
    Addressed review comment by fixing typo in comment description
    of DC6 PSR subtest.
v5: Addressed the review comment by removing redundant read_dc_counter(),
    clubbed cleanup() function in test_dc_state_psr() suggested by Imre.
    Listing actual change in patch set changelog to make review easier.
v6: Rebased due to test name pm_dc changed to i915_pm_dc, aligning to
    other PM tests.

Signed-off-by: Jyoti Yadav <jyoti.r.yadav at intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 tests/i915/i915_pm_dc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/i915/i915_pm_dc.c b/tests/i915/i915_pm_dc.c
index 3bb8083..cf79790 100644
--- a/tests/i915/i915_pm_dc.c
+++ b/tests/i915/i915_pm_dc.c
@@ -200,6 +200,14 @@ int main(int argc, char *argv[])
 			      "Sink does not support PSR\n");
 		test_dc_state_psr(&data, CHECK_DC5);
 	}
+
+	igt_subtest("dc6-psr") {
+		data.op_psr_mode = PSR_MODE_1;
+		psr_enable(data.debugfs_fd, data.op_psr_mode);
+		igt_require_f(edp_psr_sink_support(&data),
+			      "Sink does not support PSR\n");
+		test_dc_state_psr(&data, CHECK_DC6);
+	}
 	igt_fixture {
 		close(data.debugfs_fd);
 		display_fini(&data);
-- 
2.7.4