drm/i915/dsi: Add details about TE in get_config

We need details about enabling TE on which port before we enable TE
through vblank enable path. This is based on the configuration that we
receive from the VBT wrt ports, dual_link.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200924124209.17916-2-vandita.kulkarni@intel.com

drivers/gpu/drm/i915/display/icl_dsi.c

@@ -1447,6 +1447,18 @@ static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi)
 	return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE);
 }
 
+static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi,
+					  struct intel_crtc_state *pipe_config)
+{
+	if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A)))
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 |
+					    I915_MODE_FLAG_DSI_USE_TE0;
+	else if (intel_dsi->ports == BIT(PORT_B))
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1;
+	else
+		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0;
+}
+
 static void gen11_dsi_get_config(struct intel_encoder *encoder,
 				 struct intel_crtc_state *pipe_config)
 {
@@ -1468,6 +1480,10 @@ static void gen11_dsi_get_config(struct intel_encoder *encoder,
 	pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI);
 	pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc);
 
+	/* Get the details on which TE should be enabled */
+	if (is_cmd_mode(intel_dsi))
+		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
+
 	if (gen11_dsi_is_periodic_cmd_mode(intel_dsi))
 		pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE;
 }
@@ -1562,18 +1578,8 @@ static int gen11_dsi_compute_config(struct intel_encoder *encoder,
 	 * 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->mode_flags |=
-						I915_MODE_FLAG_DSI_USE_TE1 |
-						I915_MODE_FLAG_DSI_USE_TE0;
-		else if (intel_dsi->ports == BIT(PORT_B))
-			pipe_config->mode_flags |=
-						I915_MODE_FLAG_DSI_USE_TE1;
-		else
-			pipe_config->mode_flags |=
-						I915_MODE_FLAG_DSI_USE_TE0;
-	}
+	if (is_cmd_mode(intel_dsi))
+		gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config);
 
 	return 0;
 }