@@ -3959,11 +3959,77 @@ intel_dp_get_sink_irq_esi(struct intel_dp *intel_dp, u8 *sink_irq_vector)
return true;
}
-static void
-intel_dp_handle_test_request(struct intel_dp *intel_dp)
+static uint8_t intel_dp_autotest_link_training(struct intel_dp *intel_dp)
+{
+ uint8_t test_result = DP_TEST_NAK;
+ return test_result;
+}
+
+static uint8_t intel_dp_autotest_video_pattern(struct intel_dp *intel_dp)
+{
+ uint8_t test_result = DP_TEST_NAK;
+ return test_result;
+}
+
+static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp)
+{
+ uint8_t test_result = DP_TEST_NAK;
+ return test_result;
+}
+
+static uint8_t intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
+{
+ uint8_t test_result = DP_TEST_NAK;
+ return test_result;
+}
+
+static void intel_dp_handle_test_request(struct intel_dp *intel_dp)
{
- /* NAK by default */
- drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_RESPONSE, DP_TEST_NAK);
+ uint8_t response = DP_TEST_NAK;
+ uint8_t rxdata = 0;
+ int status = 0;
+
+ status = drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_REQUEST, &rxdata, 1);
+ if (status != 0) {
+ response = DP_TEST_NAK;
+ DRM_DEBUG_KMS("Could not read test request from sink\n",
+ status);
+ return;
+ }
+
+ switch (rxdata) {
+ case DP_TEST_LINK_TRAINING:
+ DRM_DEBUG_KMS("LINK_TRAINING test requested\n");
+ response = intel_dp_autotest_link_training(intel_dp);
+ break;
+ case DP_TEST_LINK_VIDEO_PATTERN:
+ DRM_DEBUG_KMS("TEST_PATTERN test requested\n");
+ response = intel_dp_autotest_video_pattern(intel_dp);
+ break;
+ case DP_TEST_LINK_EDID_READ:
+ DRM_DEBUG_KMS("EDID test requested\n");
+ response = intel_dp_autotest_edid(intel_dp);
+ break;
+ case DP_TEST_LINK_PHY_TEST_PATTERN:
+ DRM_DEBUG_KMS("PHY_PATTERN test requested\n");
+ response = intel_dp_autotest_phy_pattern(intel_dp);
+ break;
+ /* FAUX is optional in DP 1.2*/
+ case DP_TEST_LINK_FAUX_PATTERN:
+ DRM_DEBUG_KMS("FAUX_PATTERN testing not supported\n");
+ break;
+ default:
+ DRM_DEBUG_KMS("Invalid test request '%02x'\n", rxdata);
+ break;
+ }
+ status = drm_dp_dpcd_write(&intel_dp->aux,
+ DP_TEST_RESPONSE,
+ &response, 1);
+ if (status != 0)
+ DRM_DEBUG_KMS("Could not write test response to sink\n",
+ status);
+
+ intel_dp->compliance_testing_active = 0;
}
static int
Add the skeleton framework for supporting automation for Displayport compliance testing. This patch adds the necessary framework for the source device to appropriately respond to test automation requests from a sink device. V2: - Addressed previous mailing list feedback - Fixed compilation issue (struct members declared in a later patch) - Updated debug messages to be more accurate - Added status checks for the DPCD read/write calls - Removed excess comments and debug messages Signed-off-by: Todd Previte <tprevite@gmail.com> --- drivers/gpu/drm/i915/intel_dp.c | 74 ++++++++++++++++++++++++++++++++++++++--- 1 file changed, 70 insertions(+), 4 deletions(-)