[PATCH v9 16/17] drm/i915/display: Add function to configure event for dc balance

[Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>]

Configure pipe dmc event for dc balance enable/disable.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dmc.c | 15 +++++++++++++++
 drivers/gpu/drm/i915/display/intel_dmc.h |  2 ++
 drivers/gpu/drm/i915/display/intel_vrr.c |  2 ++
 3 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 147adcd18320..8de8e69780fa 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -859,6 +859,21 @@ static void dmc_configure_event(struct intel_display *display,
 		      dmc_id, num_handlers, event_id);
 }
 
+/*
+ * intel_dmc_configure_dc_balance_event() - Configure event
+ * for dc balance enable/disable
+ * @display: display instance
+ * @pipe: pipe which register use to block
+ * @enable: enable/disable
+ */
+void intel_dmc_configure_dc_balance_event(struct intel_display *display,
+					  enum pipe pipe, bool enable)
+{
+	enum intel_dmc_id dmc_id = PIPE_TO_DMC_ID(pipe);
+
+	dmc_configure_event(display, dmc_id, PIPEDMC_EVENT_ADAPTIVE_DCB_TRIGGER, enable);
+}
+
 /**
  * intel_dmc_block_pkgc() - block PKG C-state
  * @display: display instance
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h
index 9c6a42fc820e..3d8a9a593319 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -25,6 +25,8 @@ void intel_dmc_enable_pipe(const struct intel_crtc_state *crtc_state);
 void intel_dmc_disable_pipe(const struct intel_crtc_state *crtc_state);
 void intel_dmc_block_pkgc(struct intel_display *display, enum pipe pipe,
 			  bool block);
+void intel_dmc_configure_dc_balance_event(struct intel_display *display,
+					  enum pipe pipe, bool enable);
 void intel_dmc_start_pkgc_exit_at_start_of_undelayed_vblank(struct intel_display *display,
 							    enum pipe pipe, bool enable);
 void intel_dmc_fini(struct intel_display *display);
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 286ffa35107b..ec2e5a94a99e 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -809,6 +809,7 @@ intel_vrr_enable_dc_balancing(const struct intel_crtc_state *crtc_state)
 		       crtc_state->vrr.dc_balance.slope);
 	intel_de_write(display, PIPEDMC_DCB_VBLANK(pipe),
 		       crtc_state->vrr.dc_balance.vblank_target);
+	intel_dmc_configure_dc_balance_event(display, pipe, true);
 	intel_de_write(display, TRANS_ADAPTIVE_SYNC_DCB_CTL(cpu_transcoder),
 		       ADAPTIVE_SYNC_COUNTER_EN);
 	intel_pipedmc_dcb_enable(NULL, crtc);
@@ -826,6 +827,7 @@ intel_vrr_disable_dc_balancing(const struct intel_crtc_state *old_crtc_state)
 		return;
 
 	intel_pipedmc_dcb_disable(NULL, crtc);
+	intel_dmc_configure_dc_balance_event(display, pipe, false);
 	intel_de_write(display, TRANS_ADAPTIVE_SYNC_DCB_CTL(cpu_transcoder), 0);
 	intel_de_write(display, PIPEDMC_DCB_VMIN(pipe), 0);
 	intel_de_write(display, PIPEDMC_DCB_VMAX(pipe), 0);
-- 
2.48.1