[PATCH v11 04/11] drm/i915/vrr: Add helper for PSR to enable Frame Change event on trans push

["Jouni Högander" <jouni.hogander@intel.com>]

Add new helper to enable PSR Frame Change event generation using trans push
mechanism. This helper is to be used by PSR code on PSR enable.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
---
 drivers/gpu/drm/i915/display/intel_vrr.c | 9 +++++++++
 drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index f26989c74268..66c68e7f3a49 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -973,6 +973,15 @@ void intel_vrr_transcoder_disable(const struct intel_crtc_state *old_crtc_state)
 		intel_vrr_tg_disable(old_crtc_state);
 }
 
+void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
+		       trans_vrr_push(crtc_state, false));
+}
+
 bool intel_vrr_is_fixed_rr(const struct intel_crtc_state *crtc_state)
 {
 	return crtc_state->vrr.flipline &&
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index bedcc8c4bff2..4f16ca4af91f 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -33,6 +33,7 @@ void intel_vrr_dcb_increment_flip_count(struct intel_crtc_state *crtc_state,
 					struct intel_crtc *crtc);
 bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state);
 void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
+void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state *crtc_state);
 void intel_vrr_get_config(struct intel_crtc_state *crtc_state);
 int intel_vrr_vmax_vtotal(const struct intel_crtc_state *crtc_state);
 int intel_vrr_vmin_vtotal(const struct intel_crtc_state *crtc_state);
-- 
2.43.0