[Intel-gfx] [PATCH 10/14] drm/i915: Enable Tearing effect trigger by GPIO pin

[Gaurav K Singh]

While enabling MIPI Port in command mode, enable tearing effect
by GPIO pin.

Signed-off-by: Gaurav K Singh <gaurav.k.singh at intel.com>
Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu at intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar at intel.com>
---
 drivers/gpu/drm/i915/intel_dsi.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 70c4e56..0f1bec4 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -445,7 +445,10 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder)
 				temp |= LANE_CONFIGURATION_DUAL_LINK_ENABLE;
 		}
 		/* assert ip_tg_enable signal */
-		I915_WRITE(port_ctrl, temp | DPI_ENABLE);
+		if (is_cmd_mode(intel_dsi))
+			I915_WRITE(port_ctrl, temp | TEARING_EFFECT_GPIO);
+		else
+			I915_WRITE(port_ctrl, temp | DPI_ENABLE);
 		POSTING_READ(port_ctrl);
 	}
 }
-- 
1.7.9.5