drm/i915/dsb: Add pipedmc dc balance enable/disable

Add function to control DC balance enable/disable bit via DSB.

--v2:
Remove redundant forward declaration.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20251223104542.2688548-16-mitulkumar.ajitkumar.golani@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 2fb6fec6dc99f20b9123ad009ee729276c705912..e076ba7e0f28e847b7f3cdd988d1bb2cd0064e01 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -1755,3 +1755,20 @@ u32 intel_pipedmc_start_mmioaddr(struct intel_crtc *crtc)
 
        return dmc ? dmc->dmc_info[dmc_id].start_mmioaddr : 0;
 }
+
+void intel_pipedmc_dcb_enable(struct intel_dsb *dsb, struct intel_crtc *crtc)
+{
+       struct intel_display *display = to_intel_display(crtc);
+       enum pipe pipe = crtc->pipe;
+
+       intel_de_write_dsb(display, dsb, PIPEDMC_DCB_CTL(pipe),
+                          PIPEDMC_ADAPTIVE_DCB_ENABLE);
+}
+
+void intel_pipedmc_dcb_disable(struct intel_dsb *dsb, struct intel_crtc *crtc)
+{
+       struct intel_display *display = to_intel_display(crtc);
+       enum pipe pipe = crtc->pipe;
+
+       intel_de_write_dsb(display, dsb, PIPEDMC_DCB_CTL(pipe), 0);
+}

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h
index 40e9dcb033cc6af1736c75a220de0a872f7673cb..9c6a42fc820e6499ab14c1f5bfd4a05d0e2998df 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -15,6 +15,7 @@ struct intel_crtc;
 struct intel_crtc_state;
 struct intel_display;
 struct intel_dmc_snapshot;
+struct intel_dsb;
 
 void intel_dmc_init(struct intel_display *display);
 void intel_dmc_load_program(struct intel_display *display);
@@ -39,6 +40,8 @@ void intel_dmc_update_dc6_allowed_count(struct intel_display *display, bool star
 void assert_main_dmc_loaded(struct intel_display *display);
 
 void intel_pipedmc_irq_handler(struct intel_display *display, enum pipe pipe);
+void intel_pipedmc_dcb_enable(struct intel_dsb *dsb, struct intel_crtc *crtc);
+void intel_pipedmc_dcb_disable(struct intel_dsb *dsb, struct intel_crtc *crtc);
 
 u32 intel_pipedmc_start_mmioaddr(struct intel_crtc *crtc);
 void intel_pipedmc_enable_event(struct intel_crtc *crtc,