[PATCH v7 12/18] drm/i915/dsb: Add pipedmc dc balance enable/disable

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

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

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

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>
---
 drivers/gpu/drm/i915/display/intel_dmc.c | 18 ++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dmc.h |  5 +++++
 2 files changed, 23 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 4572e87d9bfa..1726c0ab18c2 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -1607,3 +1607,21 @@ void intel_pipedmc_irq_handler(struct intel_display *display, enum pipe pipe)
 		drm_err(display->drm, "[CRTC:%d:%s]] PIPEDMC interrupt vector 0x%x\n",
 			crtc->base.base.id, crtc->base.name, tmp);
 }
+
+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 7820fa5aed3e..d45d51bedb87 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -8,11 +8,14 @@
 
 #include <linux/types.h>
 
+
 enum pipe;
+struct intel_crtc;
 struct drm_printer;
 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);
@@ -36,5 +39,7 @@ 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);
 
 #endif /* __INTEL_DMC_H__ */
-- 
2.48.1