On 11/3/2025 10:59 AM, Mitul Golani wrote:
Add function which resets all accumulated DC Balance parameters whenever adaptive mode of VRR goes off. This helps to give a fresh start when VRR is re-enabled. Signed-off-by: Mitul Golani <[email protected]> --- drivers/gpu/drm/i915/display/intel_display.c | 1 + drivers/gpu/drm/i915/display/intel_vrr.c | 13 +++++++++++++ drivers/gpu/drm/i915/display/intel_vrr.h | 2 ++ 3 files changed, 16 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 323293f4bf6d..b256517d58cf 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -1149,6 +1149,7 @@ static void intel_pre_plane_update(struct intel_atomic_state *state, if (intel_crtc_vrr_disabling(state, crtc)) { intel_vrr_disable(old_crtc_state); intel_vrr_dcb_reset_flip_count(old_crtc_state, crtc); + intel_vrr_dcb_balance_reset(old_crtc_state, crtc);
Lets have both the reset functions in the intel_vrr_dcb_balance_reset(). Move this patch before the dcb_flip_count introduction patch. Call the function to reset the flip_count from intel_vrr_dcb_balance_reset() Regards, Ankit
intel_crtc_update_active_timings(old_crtc_state, false); }diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.cindex 2ae27751e5b4..6168caff9cf0 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -639,6 +639,19 @@ void intel_vrr_dcb_reset_flip_count(const struct intel_crtc_state *crtc_state, intel_de_write(display, PIPEDMC_DCB_FLIP_COUNT(pipe), 0); }+void+intel_vrr_dcb_balance_reset(const struct intel_crtc_state *crtc_state, + struct intel_crtc *crtc) +{ + struct intel_display *display = to_intel_display(crtc_state); + enum pipe pipe = crtc->pipe; + + if (!crtc_state->vrr.dc_balance.enable) + return; + + intel_de_write(display, PIPEDMC_DCB_BALANCE_RESET(pipe), 0); +} + void intel_vrr_send_push(struct intel_dsb *dsb, const struct intel_crtc_state *crtc_state) { diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h index 8f97525b8e2d..a713d1a1e3dd 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.h +++ b/drivers/gpu/drm/i915/display/intel_vrr.h @@ -44,6 +44,8 @@ void intel_vrr_dcb_increment_flip_count(struct intel_crtc_state *crtc_state, struct intel_crtc *crtc); void intel_vrr_dcb_reset_flip_count(const struct intel_crtc_state *crtc_state, struct intel_crtc *crtc); +void intel_vrr_dcb_balance_reset(const struct intel_crtc_state *crtc_state, + struct intel_crtc *crtc); bool intel_vrr_always_use_vrr_tg(struct intel_display *display); int intel_vrr_safe_window_start(const struct intel_crtc_state *crtc_state); int intel_vrr_vmin_safe_window_end(const struct intel_crtc_state *crtc_state);
