[Intel-gfx] [V8 5/9] drm/i915/dsi: Use private flags to indicate TE in cmd mode

[Vandita Kulkarni]

On dsi cmd mode we do not receive vblanks instead
we would get TE and these flags indicate TE is expected on
which port.

Signed-off-by: Vandita Kulkarni <vandita.kulkarni at intel.com>
Reviewed-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/display/icl_dsi.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 949f4867402b..d452037b1ac9 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1550,6 +1550,24 @@ static int gen11_dsi_compute_config(struct intel_encoder *encoder,
 	pipe_config->hw.adjusted_mode.private_flags &=
 					~I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE;
 
+	/*
+	 * In case of TE GATE cmd mode, we
+	 * receive TE from the slave if
+	 * dual link is enabled
+	 */
+	if (is_cmd_mode(intel_dsi)) {
+		if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A)))
+			pipe_config->hw.adjusted_mode.private_flags |=
+						I915_MODE_FLAG_DSI_USE_TE1 |
+						I915_MODE_FLAG_DSI_USE_TE0;
+		else if (intel_dsi->ports == BIT(PORT_B))
+			pipe_config->hw.adjusted_mode.private_flags |=
+						I915_MODE_FLAG_DSI_USE_TE1;
+		else
+			pipe_config->hw.adjusted_mode.private_flags |=
+						I915_MODE_FLAG_DSI_USE_TE0;
+	}
+
 	return 0;
 }
 
-- 
2.21.0.5.gaeb582a