[PATCH v2 10/12] drm/i915: Use ddi_update_pipe in intel_dp_mst

[Sean Paul]

From: Sean Paul <seanpaul at chromium.org>

In order to act upon content_protection property changes, we'll need to
implement the .update_pipe() hook. We can re-use intel_ddi_update_pipe
for this

Signed-off-by: Sean Paul <seanpaul at chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203173638.94919-10-sean@poorly.run #v1

Changes in v2:
-none
---
 drivers/gpu/drm/i915/display/intel_ddi.c    | 9 +++++----
 drivers/gpu/drm/i915/display/intel_dp.h     | 6 ++++++
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 1 +
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index ea8dd8dbc445..3742c5dbd8b4 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4097,9 +4097,9 @@ static void intel_ddi_update_pipe_dp(struct intel_encoder *encoder,
 	intel_panel_update_backlight(encoder, crtc_state, conn_state);
 }
 
-static void intel_ddi_update_pipe(struct intel_encoder *encoder,
-				  const struct intel_crtc_state *crtc_state,
-				  const struct drm_connector_state *conn_state)
+void intel_ddi_update_pipe(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state)
 {
 	struct intel_connector *connector =
 				to_intel_connector(conn_state->connector);
@@ -4109,7 +4109,8 @@ static void intel_ddi_update_pipe(struct intel_encoder *encoder,
 			 conn_state->content_protection !=
 			 DRM_MODE_CONTENT_PROTECTION_UNDESIRED);
 
-	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+	if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) &&
+	    !intel_encoder_is_mst(encoder))
 		intel_ddi_update_pipe_dp(encoder, crtc_state, conn_state);
 
 	/*
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 3da166054788..db732b432809 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -123,6 +123,12 @@ static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
 	return ~((1 << lane_count) - 1) & 0xf;
 }
 
+
 u32 intel_dp_mode_to_fec_clock(u32 mode_clock);
 
+/* Shared between intel_dp and intel_dp_mst */
+void intel_ddi_update_pipe(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   const struct drm_connector_state *conn_state);
+
 #endif /* __INTEL_DP_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 926e49f449a6..fbd9a6c543e7 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -655,6 +655,7 @@ intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum
 	intel_encoder->compute_config = intel_dp_mst_compute_config;
 	intel_encoder->disable = intel_mst_disable_dp;
 	intel_encoder->post_disable = intel_mst_post_disable_dp;
+	intel_encoder->update_pipe = intel_ddi_update_pipe;
 	intel_encoder->pre_pll_enable = intel_mst_pre_pll_enable_dp;
 	intel_encoder->post_pll_disable = intel_mst_post_pll_disable_dp;
 	intel_encoder->pre_enable = intel_mst_pre_enable_dp;
-- 
Sean Paul, Software Engineer, Google / Chromium OS