Merge tag 'drm-intel-next-2025-06-18' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next

drm/i915 feature pull for v6.17:

Features and functionality:
- Add support for DSC fractional link bpp on DP MST (Imre)
- Add support for simultaneous Panel Replay and Adaptive Sync (Jouni)
- Add support for PTL+ double buffered LUT registers (Chaitanya, Ville)
- Add PIPEDMC event handling in preparation for flip queue (Ville)

Refactoring and cleanups:
- Rename lots of DPLL interfaces to unify them (Suraj)
- Allocate struct intel_display dynamically (Jani)
- Abstract VLV IOSF sideband better (Jani)
- Use str_true_false() helper (Yumeng Fang)
- Refactor DSB code in preparation for flip queue (Ville)
- Use drm_modeset_lock_assert_held() instead of open coding (Luca)
- Remove unused arg from skl_scaler_get_filter_select() (Luca)
- Split out a separate display register header (Jani)
- Abstract DRAM detection better (Jani)
- Convert LPT/WPT SBI sideband to struct intel_display (Jani)

Fixes:
- Fix DSI HS command dispatch with forced pipeline flush (Gareth Yu)
- Fix BMG and LNL+ DP adaptive sync SDP programming (Ankit)
- Fix error path for xe display workqueue allocation (Haoxiang Li)
- Disable DP AUX access probe where not required (Imre)
- Fix DKL PHY access if the port is invalid (Luca)
- Fix PSR2_SU_STATUS access on ADL+ (Jouni)
- Add sanity checks for porch and sync on BXT/GLK DSI (Ville)

DRM core changes:
- Change AUX DPCD access probe address (Imre)
- Refactor EDID quirks, amd make them available to drivers (Imre)
- Add quirk for DPCD access probe (Imre)
- Add DPCD definitions for Panel Replay capabilities (Jouni)

Merges:
- Backmerges to sync with v6.15-rcs and v6.16-rc1 (Jani)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://lore.kernel.org/r/fff9f231850ed410bd81b53de43eff0b98240d31@intel.com

1 files changed, 24 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index c6565baf815a1..3eed37f271b02 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -6,8 +6,8 @@
 
 #include <drm/drm_print.h>
 
-#include "i915_reg.h"
 #include "intel_de.h"
+#include "intel_display_regs.h"
 #include "intel_display_types.h"
 #include "intel_dp.h"
 #include "intel_vrr.h"
@@ -576,6 +576,25 @@ bool intel_vrr_always_use_vrr_tg(struct intel_display *display)
 	return false;
 }
 
+static
+void intel_vrr_set_db_point_and_transmission_line(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+	/*
+	 * For BMG and LNL+ onwards the EMP_AS_SDP_TL is used for programming
+	 * double buffering point and transmission line for VRR packets for
+	 * HDMI2.1/DP/eDP/DP->HDMI2.1 PCON.
+	 * Since currently we support VRR only for DP/eDP, so this is programmed
+	 * to for Adaptive Sync SDP to Vsync start.
+	 */
+	if (DISPLAY_VERx100(display) == 1401 || DISPLAY_VER(display) >= 20)
+		intel_de_write(display,
+			       EMP_AS_SDP_TL(display, cpu_transcoder),
+			       EMP_AS_SDP_DB_TL(crtc_state->vrr.vsync_start));
+}
+
 void intel_vrr_enable(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(crtc_state);
@@ -595,6 +614,8 @@ void intel_vrr_enable(const struct intel_crtc_state *crtc_state)
 		       TRANS_PUSH_EN);
 
 	if (!intel_vrr_always_use_vrr_tg(display)) {
+		intel_vrr_set_db_point_and_transmission_line(crtc_state);
+
 		if (crtc_state->cmrr.enable) {
 			intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder),
 				       VRR_CTL_VRR_ENABLE | VRR_CTL_CMRR_ENABLE |
@@ -646,6 +667,8 @@ void intel_vrr_transcoder_enable(const struct intel_crtc_state *crtc_state)
 	intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
 		       TRANS_PUSH_EN);
 
+	intel_vrr_set_db_point_and_transmission_line(crtc_state);
+
 	intel_de_write(display, TRANS_VRR_CTL(display, cpu_transcoder),
 		       VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state));
 }