[PATCH v1 7/8] drm/i915/dsb: Add pipedmc dc balance enable/disable

[Mitul Golani]

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

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dmc.c | 16 ++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dmc.h |  5 +++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c 
b/drivers/gpu/drm/i915/display/intel_dmc.c
index 98f80a6c63e8..17835b297f6d 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -30,6 +30,7 @@
 #include "intel_de.h"
 #include "intel_display_rpm.h"
 #include "intel_display_power_well.h"
+#include "intel_display_types.h"
 #include "intel_dmc.h"
 #include "intel_dmc_regs.h"
 #include "intel_step.h"
@@ -1362,3 +1363,18 @@ void intel_dmc_debugfs_register(struct intel_display 
*display)
        debugfs_create_file("i915_dmc_info", 0444, minor->debugfs_root,
                            display, &intel_dmc_debugfs_status_fops);
 }
+
+void intel_pipedmc_dcb_enable(struct intel_dsb *dsb, struct intel_crtc *crtc)
+{
+       struct intel_display *display = to_intel_display(crtc);
+
+       intel_de_write_dsb(display, dsb, PIPEDMC_DCB_CTL(crtc->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);
+
+       intel_de_write_dsb(display, dsb, PIPEDMC_DCB_CTL(crtc->pipe), 0);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h 
b/drivers/gpu/drm/i915/display/intel_dmc.h
index c78426eb4cd5..74dcd142f5b1 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -10,8 +10,10 @@
 
 enum pipe;
 struct drm_printer;
+struct intel_crtc;
 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);
@@ -30,4 +32,7 @@ void intel_dmc_update_dc6_allowed_count(struct intel_display 
*display, bool star
 
 void assert_dmc_loaded(struct intel_display *display);
 
+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