[PATCH v6 12/17] drm/i915/dsb: Add pipedmc dc balance enable/disable
Mitul Golani
mitulkumar.ajitkumar.golani at intel.com
Tue Jun 3 19:35:17 UTC 2025
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Add function to control DC balance enable/disable bit via DSB.
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
drivers/gpu/drm/i915/display/intel_dmc.c | 17 +++++++++++++++++
drivers/gpu/drm/i915/display/intel_dmc.h | 4 ++++
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 a7ba17361d63..13652dd1ed2a 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -1478,3 +1478,20 @@ 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 a98e8deff13a..12912e80bbc6 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -9,9 +9,11 @@
#include <linux/types.h>
enum pipe;
+struct intel_crtc;
struct drm_printer;
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);
@@ -35,5 +37,7 @@ void intel_dmc_update_dc6_allowed_count(struct intel_display *display, bool star
void assert_dmc_loaded(struct intel_display *display);
void intel_pipedmc_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
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