drm/i915/dsi: Use private flags to indicate TE in cmd mode

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@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200312053841.2794-6-vandita.kulkarni@intel.com

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 949f4867402baf388c5cc905e493fe26d559fe15..d452037b1ac91715af383853acdeba800f8a5e1a 100644 (file)
--- 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;
 }