[igt-dev] [PATCH i-g-t v1 4/6] [intel-gfx][intel-dev] tests/pm_dc : This patch adds test to validate DC6 on SKL. DC6 on SKL is achieved with RPM enabled and DPMS OFF sequence.

[Jyoti Yadav]

Signed-off-by: Jyoti Yadav <jyoti.r.yadav at intel.com>
---
 tests/pm_dc.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tests/pm_dc.c b/tests/pm_dc.c
index b609fad..0f18ece 100644
--- a/tests/pm_dc.c
+++ b/tests/pm_dc.c
@@ -146,6 +146,18 @@ static uint32_t read_dc5_dc6_counter(uint32_t dev_id)
 	return dc5_dc6_count;
 }
 
+static void dpms_off_on(data_t *data)
+{
+	for (int i = 0; i < data->display.n_outputs; i++) {
+		kmstest_set_connector_dpms(data->drm_fd, data->display.outputs[i].config.connector,
+					   DRM_MODE_DPMS_OFF);
+	}
+	for (int i = 0; i < data->display.n_outputs; i++) {
+		kmstest_set_connector_dpms(data->drm_fd, data->display.outputs[i].config.connector,
+				   DRM_MODE_DPMS_ON);
+	}
+}
+
 static void test_dc5(data_t *data)
 {
 	uint32_t dc3_dc5_counter_before_psr, dc3_dc5_counter_after_psr;
@@ -162,6 +174,7 @@ int main(int argc, char *argv[])
 {
 	data_t data = {};
 	uint32_t dc5_dc6_counter_before_psr, dc5_dc6_counter_after_psr;
+	uint32_t dc5_dc6_counter_before_suspend, dc5_dc6_counter_after_resume;
 
 	igt_skip_on_simulation();
 	igt_fixture {
@@ -193,6 +206,14 @@ int main(int argc, char *argv[])
 				"DC6 State is not achieved\n");
 		cleanup(&data);
 	}
+	igt_subtest("DC6_state_on_gen9") {
+		dc5_dc6_counter_before_suspend = read_dc5_dc6_counter(data.devid);
+		dpms_off_on(&data);
+		dc5_dc6_counter_after_resume = read_dc5_dc6_counter(data.devid);
+		igt_require_f(dc5_dc6_counter_after_resume > dc5_dc6_counter_before_suspend,
+				"DC6 State is not achieved\n");
+		cleanup(&data);
+	}
 	igt_fixture {
 		psr_disable(data.debugfs_fd);
 		close(data.debugfs_fd);
-- 
2.7.4