8 files changed, 515 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 0c3fbd0d14e7..853543443072 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -264,6 +264,7 @@ i915-y += \
 	display/intel_fbc.o \
 	display/intel_fdi.o \
 	display/intel_fifo_underrun.o \
+	display/intel_flipq.o \
 	display/intel_frontbuffer.o \
 	display/intel_global_state.o \
 	display/intel_hdcp.o \
diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index e26216037e9c..8586ba102605 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -44,6 +44,7 @@
 #include "intel_fbc.h"
 #include "intel_fbdev.h"
 #include "intel_fdi.h"
+#include "intel_flipq.h"
 #include "intel_gmbus.h"
 #include "intel_hdcp.h"
 #include "intel_hotplug.h"
@@ -537,6 +538,8 @@ int intel_display_driver_probe(struct intel_display *display)
 	 */
 	intel_hdcp_component_init(display);
 
+	intel_flipq_init(display);
+
 	/*
 	 * Force all active planes to recompute their states. So that on
 	 * mode_setcrtc after probe, all the intel_plane_state variables
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index a67ca33ac57a..9e355d781e5c 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1371,6 +1371,21 @@ struct intel_pipe_crc {
 	enum intel_pipe_crc_source source;
 };
 
+enum intel_flipq_id {
+	INTEL_FLIPQ_PLANE_1,
+	INTEL_FLIPQ_PLANE_2,
+	INTEL_FLIPQ_PLANE_3,
+	INTEL_FLIPQ_GENERAL,
+	INTEL_FLIPQ_FAST,
+	MAX_INTEL_FLIPQ,
+};
+
+struct intel_flipq {
+	u32 start_mmioaddr;
+	enum intel_flipq_id flipq_id;
+	u8 tail;
+};
+
 struct intel_crtc {
 	struct drm_crtc base;
 	enum pipe pipe;
@@ -1402,6 +1417,8 @@ struct intel_crtc {
 	bool cpu_fifo_underrun_disabled;
 	bool pch_fifo_underrun_disabled;
 
+	struct intel_flipq flipq[MAX_INTEL_FLIPQ];
+
 	/* per-pipe watermark state */
 	struct {
 		/* watermarks currently being used  */
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 14625418a558..b8fe9a089bf2 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -24,6 +24,7 @@
 
 #include <linux/debugfs.h>
 #include <linux/firmware.h>
+#include <drm/drm_vblank.h>
 
 #include "i915_drv.h"
 #include "i915_reg.h"
@@ -35,6 +36,7 @@
 #include "intel_display_types.h"
 #include "intel_dmc.h"
 #include "intel_dmc_regs.h"
+#include "intel_flipq.h"
 #include "intel_step.h"
 
 /**
@@ -737,6 +739,8 @@ void intel_dmc_enable_pipe(const struct intel_crtc_state *crtc_state)
 	assert_dmc_loaded(display, dmc_id);
 
 	if (DISPLAY_VER(display) >= 20) {
+		intel_flipq_reset(display, pipe);
+
 		intel_de_write(display, PIPEDMC_INTERRUPT(pipe), pipedmc_interrupt_mask(display));
 		intel_de_write(display, PIPEDMC_INTERRUPT_MASK(pipe), ~pipedmc_interrupt_mask(display));
 	}
@@ -765,6 +769,8 @@ void intel_dmc_disable_pipe(const struct intel_crtc_state *crtc_state)
 	if (DISPLAY_VER(display) >= 20) {
 		intel_de_write(display, PIPEDMC_INTERRUPT_MASK(pipe), ~0);
 		intel_de_write(display, PIPEDMC_INTERRUPT(pipe), pipedmc_interrupt_mask(display));
+
+		intel_flipq_reset(display, pipe);
 	}
 }
 
@@ -853,6 +859,13 @@ void intel_dmc_load_program(struct intel_display *display)
 		assert_dmc_loaded(display, dmc_id);
 	}
 
+	if (DISPLAY_VER(display) >= 20)
+		intel_de_write(display, DMC_FQ_W2_PTS_CFG_SEL,
+			       PIPE_D_DMC_W2_PTS_CONFIG_SELECT(PIPE_D) |
+			       PIPE_C_DMC_W2_PTS_CONFIG_SELECT(PIPE_C) |
+			       PIPE_B_DMC_W2_PTS_CONFIG_SELECT(PIPE_B) |
+			       PIPE_A_DMC_W2_PTS_CONFIG_SELECT(PIPE_A));
+
 	power_domains->dc_state = 0;
 
 	gen9_set_dc_state_debugmask(display);
@@ -1371,6 +1384,17 @@ void intel_dmc_suspend(struct intel_display *display)
 		intel_dmc_runtime_pm_put(display);
 }
 
+void intel_dmc_wait_fw_load(struct intel_display *display)
+{
+	struct intel_dmc *dmc = display_to_dmc(display);
+
+	if (!HAS_DMC(display))
+		return;
+
+	if (dmc)
+		flush_work(&dmc->work);
+}
+
 /**
  * intel_dmc_resume() - init DMC firmware during system resume
  * @display: display instance
@@ -1606,3 +1630,30 @@ 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_enable_event(struct intel_crtc *crtc,
+				enum pipedmc_event_id event)
+{
+	struct intel_display *display = to_intel_display(crtc);
+	enum intel_dmc_id dmc_id = PIPE_TO_DMC_ID(crtc->pipe);
+
+	dmc_configure_event(display, dmc_id, event, true);
+}
+
+void intel_pipedmc_disable_event(struct intel_crtc *crtc,
+				 enum pipedmc_event_id event)
+{
+	struct intel_display *display = to_intel_display(crtc);
+	enum intel_dmc_id dmc_id = PIPE_TO_DMC_ID(crtc->pipe);
+
+	dmc_configure_event(display, dmc_id, event, false);
+}
+
+u32 intel_pipedmc_start_mmioaddr(struct intel_crtc *crtc)
+{
+	struct intel_display *display = to_intel_display(crtc);
+	struct intel_dmc *dmc = display_to_dmc(display);
+	enum intel_dmc_id dmc_id = PIPE_TO_DMC_ID(crtc->pipe);
+
+	return dmc ? dmc->dmc_info[dmc_id].start_mmioaddr : 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h
index 7820fa5aed3e..40e9dcb033cc 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -9,13 +9,16 @@
 #include <linux/types.h>
 
 enum pipe;
+enum pipedmc_event_id;
 struct drm_printer;
+struct intel_crtc;
 struct intel_crtc_state;
 struct intel_display;
 struct intel_dmc_snapshot;
 
 void intel_dmc_init(struct intel_display *display);
 void intel_dmc_load_program(struct intel_display *display);
+void intel_dmc_wait_fw_load(struct intel_display *display);
 void intel_dmc_disable_program(struct intel_display *display);
 void intel_dmc_enable_pipe(const struct intel_crtc_state *crtc_state);
 void intel_dmc_disable_pipe(const struct intel_crtc_state *crtc_state);
@@ -37,4 +40,12 @@ void assert_main_dmc_loaded(struct intel_display *display);
 
 void intel_pipedmc_irq_handler(struct intel_display *display, enum pipe pipe);
 
+u32 intel_pipedmc_start_mmioaddr(struct intel_crtc *crtc);
+void intel_pipedmc_enable_event(struct intel_crtc *crtc,
+				enum pipedmc_event_id event);
+void intel_pipedmc_disable_event(struct intel_crtc *crtc,
+				 enum pipedmc_event_id event);
+
+void intel_pipedmc_irq_handler(struct intel_display *display, enum pipe pipe);
+
 #endif /* __INTEL_DMC_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_flipq.c b/drivers/gpu/drm/i915/display/intel_flipq.c
new file mode 100644
index 000000000000..92324d207c24
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_flipq.c
@@ -0,0 +1,399 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#include <linux/pci.h>
+
+#include <drm/drm_print.h>
+
+#include "i915_utils.h"
+#include "intel_step.h"
+#include "intel_crtc.h"
+#include "intel_de.h"
+#include "intel_display_core.h"
+#include "intel_display_types.h"
+#include "intel_flipq.h"
+#include "intel_dmc.h"
+#include "intel_dmc_regs.h"
+#include "intel_dsb.h"
+#include "intel_vblank.h"
+#include "intel_vrr.h"
+
+/**
+ * DOC: DMC Flip Queue
+ *
+ * A flip queue is a ring buffer implemented by the pipe DMC firmware.
+ * The driver inserts entries into the queues to be executed by the
+ * pipe DMC at a specified presentation timestamp (PTS).
+ *
+ * Each pipe DMC provides several queues:
+ *
+ * - 1 general queue (two DSB buffers executed per entry)
+ * - 3 plane queues (one DSB buffer executed per entry)
+ * - 1 fast queue (deprecated)
+ */
+
+#define for_each_flipq(flipq_id) \
+	for ((flipq_id) = INTEL_FLIPQ_PLANE_1; (flipq_id) < MAX_INTEL_FLIPQ; (flipq_id)++)
+
+static int intel_flipq_offset(enum intel_flipq_id flipq_id)
+{
+	switch (flipq_id) {
+	case INTEL_FLIPQ_PLANE_1:
+		return 0x008;
+	case INTEL_FLIPQ_PLANE_2:
+		return 0x108;
+	case INTEL_FLIPQ_PLANE_3:
+		return 0x208;
+	case INTEL_FLIPQ_GENERAL:
+		return 0x308;
+	case INTEL_FLIPQ_FAST:
+		return 0x3c8;
+	default:
+		MISSING_CASE(flipq_id);
+		return 0;
+	}
+}
+
+static int intel_flipq_size_dw(enum intel_flipq_id flipq_id)
+{
+	switch (flipq_id) {
+	case INTEL_FLIPQ_PLANE_1:
+	case INTEL_FLIPQ_PLANE_2:
+	case INTEL_FLIPQ_PLANE_3:
+		return 64;
+	case INTEL_FLIPQ_GENERAL:
+	case INTEL_FLIPQ_FAST:
+		return 48;
+	default:
+		MISSING_CASE(flipq_id);
+		return 1;
+	}
+}
+
+static int intel_flipq_elem_size_dw(enum intel_flipq_id flipq_id)
+{
+	switch (flipq_id) {
+	case INTEL_FLIPQ_PLANE_1:
+	case INTEL_FLIPQ_PLANE_2:
+	case INTEL_FLIPQ_PLANE_3:
+		return 4;
+	case INTEL_FLIPQ_GENERAL:
+	case INTEL_FLIPQ_FAST:
+		return 6;
+	default:
+		MISSING_CASE(flipq_id);
+		return 1;
+	}
+}
+
+static int intel_flipq_size_entries(enum intel_flipq_id flipq_id)
+{
+	return intel_flipq_size_dw(flipq_id) / intel_flipq_elem_size_dw(flipq_id);
+}
+
+static void intel_flipq_crtc_init(struct intel_crtc *crtc)
+{
+	struct intel_display *display = to_intel_display(crtc);
+	enum intel_flipq_id flipq_id;
+
+	for_each_flipq(flipq_id) {
+		struct intel_flipq *flipq = &crtc->flipq[flipq_id];
+
+		flipq->start_mmioaddr = intel_pipedmc_start_mmioaddr(crtc) + intel_flipq_offset(flipq_id);
+		flipq->flipq_id = flipq_id;
+
+		drm_dbg_kms(display->drm, "[CRTC:%d:%s] FQ %d: start 0x%x\n",
+			    crtc->base.base.id, crtc->base.name,
+			    flipq_id, flipq->start_mmioaddr);
+	}
+}
+
+bool intel_flipq_supported(struct intel_display *display)
+{
+	if (!display->dmc.dmc)
+		return false;
+
+	if (DISPLAY_VER(display) == 20)
+		return true;
+
+	/* DMC firmware expects VRR timing generator to be used */
+	return DISPLAY_VER(display) >= 30 && intel_vrr_always_use_vrr_tg(display);
+}
+
+void intel_flipq_init(struct intel_display *display)
+{
+	struct intel_crtc *crtc;
+
+	intel_dmc_wait_fw_load(display);
+
+	for_each_intel_crtc(display->drm, crtc)
+		intel_flipq_crtc_init(crtc);
+}
+
+static int cdclk_factor(struct intel_display *display)
+{
+	if (DISPLAY_VER(display) >= 30)
+		return 120;
+	else
+		return 280;
+}
+
+static int intel_flipq_exec_time_us(struct intel_display *display)
+{
+	return intel_dsb_exec_time_us() +
+		DIV_ROUND_UP(display->cdclk.hw.cdclk * cdclk_factor(display), 540000) +
+		display->sagv.block_time_us;
+}
+
+static int intel_flipq_preempt_timeout_ms(struct intel_display *display)
+{
+	return DIV_ROUND_UP(intel_flipq_exec_time_us(display), 1000);
+}
+
+static void intel_flipq_preempt(struct intel_crtc *crtc, bool preempt)
+{
+	struct intel_display *display = to_intel_display(crtc);
+
+	intel_de_rmw(display, PIPEDMC_FQ_CTRL(crtc->pipe),
+		     PIPEDMC_FQ_CTRL_PREEMPT, preempt ? PIPEDMC_FQ_CTRL_PREEMPT : 0);
+
+	if (preempt &&
+	    intel_de_wait_for_clear(display,
+				    PIPEDMC_FQ_STATUS(crtc->pipe),
+				    PIPEDMC_FQ_STATUS_BUSY,
+				    intel_flipq_preempt_timeout_ms(display)))
+		drm_err(display->drm, "[CRTC:%d:%s] flip queue preempt timeout\n",
+			crtc->base.base.id, crtc->base.name);
+}
+
+static int intel_flipq_current_head(struct intel_crtc *crtc, enum intel_flipq_id flipq_id)
+{
+	struct intel_display *display = to_intel_display(crtc);
+
+	return intel_de_read(display, PIPEDMC_FPQ_CHP(crtc->pipe, flipq_id));
+}
+
+static void intel_flipq_write_tail(struct intel_crtc *crtc)
+{
+	struct intel_display *display = to_intel_display(crtc);
+
+	intel_de_write(display, PIPEDMC_FPQ_ATOMIC_TP(crtc->pipe),
+		       PIPEDMC_FPQ_PLANEQ_3_TP(crtc->flipq[INTEL_FLIPQ_PLANE_3].tail) |
+		       PIPEDMC_FPQ_PLANEQ_2_TP(crtc->flipq[INTEL_FLIPQ_PLANE_2].tail) |
+		       PIPEDMC_FPQ_PLANEQ_1_TP(crtc->flipq[INTEL_FLIPQ_PLANE_1].tail) |
+		       PIPEDMC_FPQ_FASTQ_TP(crtc->flipq[INTEL_FLIPQ_FAST].tail) |
+		       PIPEDMC_FPQ_GENERALQ_TP(crtc->flipq[INTEL_FLIPQ_GENERAL].tail));
+}
+
+static void intel_flipq_sw_dmc_wake(struct intel_crtc *crtc)
+{
+	struct intel_display *display = to_intel_display(crtc);
+
+	intel_de_write(display, PIPEDMC_FPQ_CTL1(crtc->pipe), PIPEDMC_SW_DMC_WAKE);
+}
+
+static int intel_flipq_exec_time_lines(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+
+	return intel_usecs_to_scanlines(&crtc_state->hw.adjusted_mode,
+					intel_flipq_exec_time_us(display));
+}
+
+void intel_flipq_reset(struct intel_display *display, enum pipe pipe)
+{
+	struct intel_crtc *crtc = intel_crtc_for_pipe(display, pipe);
+	enum intel_flipq_id flipq_id;
+
+	intel_de_write(display, PIPEDMC_FQ_CTRL(pipe), 0);
+
+	intel_de_write(display, PIPEDMC_SCANLINECMPLOWER(pipe), 0);
+	intel_de_write(display, PIPEDMC_SCANLINECMPUPPER(pipe), 0);
+
+	for_each_flipq(flipq_id) {
+		struct intel_flipq *flipq = &crtc->flipq[flipq_id];
+
+		intel_de_write(display, PIPEDMC_FPQ_HP(pipe, flipq_id), 0);
+		intel_de_write(display, PIPEDMC_FPQ_CHP(pipe, flipq_id), 0);
+
+		flipq->tail = 0;
+	}
+
+	intel_de_write(display, PIPEDMC_FPQ_ATOMIC_TP(pipe), 0);
+}
+
+static enum pipedmc_event_id flipq_event_id(struct intel_display *display)
+{
+	if (DISPLAY_VER(display) >= 30)
+		return PIPEDMC_EVENT_FULL_FQ_WAKE_TRIGGER;
+	else
+		return PIPEDMC_EVENT_SCANLINE_INRANGE_FQ_TRIGGER;
+}
+
+void intel_flipq_enable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	/* FIXME what to do with VRR? */
+	int scanline = intel_mode_vblank_start(&crtc_state->hw.adjusted_mode) -
+		intel_flipq_exec_time_lines(crtc_state);
+
+	if (DISPLAY_VER(display) >= 30) {
+		u32 start_mmioaddr = intel_pipedmc_start_mmioaddr(crtc);
+
+		/* undocumented magic DMC variables */
+		intel_de_write(display, PTL_PIPEDMC_EXEC_TIME_LINES(start_mmioaddr),
+			       intel_flipq_exec_time_lines(crtc_state));
+		intel_de_write(display, PTL_PIPEDMC_END_OF_EXEC_GB(start_mmioaddr),
+			       100);
+	}
+
+	intel_de_write(display, PIPEDMC_SCANLINECMPUPPER(crtc->pipe),
+		       PIPEDMC_SCANLINE_UPPER(scanline));
+	intel_de_write(display, PIPEDMC_SCANLINECMPLOWER(crtc->pipe),
+		       PIPEDMC_SCANLINEINRANGECMP_EN |
+		       PIPEDMC_SCANLINE_LOWER(scanline - 2));
+
+	intel_pipedmc_enable_event(crtc, flipq_event_id(display));
+
+	intel_de_write(display, PIPEDMC_FQ_CTRL(crtc->pipe), PIPEDMC_FQ_CTRL_ENABLE);
+}
+
+void intel_flipq_disable(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	intel_flipq_preempt(crtc, true);
+
+	intel_de_write(display, PIPEDMC_FQ_CTRL(crtc->pipe), 0);
+
+	intel_pipedmc_disable_event(crtc, flipq_event_id(display));
+
+	intel_de_write(display, PIPEDMC_SCANLINECMPLOWER(crtc->pipe), 0);
+	intel_de_write(display, PIPEDMC_SCANLINECMPUPPER(crtc->pipe), 0);
+}
+
+static bool assert_flipq_has_room(struct intel_crtc *crtc,
+				  enum intel_flipq_id flipq_id)
+{
+	struct intel_display *display = to_intel_display(crtc);
+	struct intel_flipq *flipq = &crtc->flipq[flipq_id];
+	int head, size = intel_flipq_size_entries(flipq_id);
+
+	head = intel_flipq_current_head(crtc, flipq_id);
+
+	return !drm_WARN(display->drm,
+			 (flipq->tail + size - head) % size >= size - 1,
+			 "[CRTC:%d:%s] FQ %d overflow (head %d, tail %d, size %d)\n",
+			 crtc->base.base.id, crtc->base.name, flipq_id,
+			 head, flipq->tail, size);
+}
+
+static void intel_flipq_write(struct intel_display *display,
+			      struct intel_flipq *flipq, u32 data, int i)
+{
+	intel_de_write(display, PIPEDMC_FQ_RAM(flipq->start_mmioaddr, flipq->tail *
+					       intel_flipq_elem_size_dw(flipq->flipq_id) + i), data);
+}
+
+static void lnl_flipq_add(struct intel_display *display,
+			  struct intel_flipq *flipq,
+			  unsigned int pts,
+			  enum intel_dsb_id dsb_id,
+			  struct intel_dsb *dsb)
+{
+	int i = 0;
+
+	switch (flipq->flipq_id) {
+	case INTEL_FLIPQ_GENERAL:
+		intel_flipq_write(display, flipq, pts, i++);
+		intel_flipq_write(display, flipq, intel_dsb_head(dsb), i++);
+		intel_flipq_write(display, flipq, LNL_FQ_INTERRUPT |
+				  LNL_FQ_DSB_ID(dsb_id) |
+				  LNL_FQ_DSB_SIZE(intel_dsb_size(dsb) / 64), i++);
+		intel_flipq_write(display, flipq, 0, i++);
+		intel_flipq_write(display, flipq, 0, i++); /* head for second DSB */
+		intel_flipq_write(display, flipq, 0, i++); /* DSB engine + size for second DSB */
+		break;
+	case INTEL_FLIPQ_PLANE_1:
+	case INTEL_FLIPQ_PLANE_2:
+	case INTEL_FLIPQ_PLANE_3:
+		intel_flipq_write(display, flipq, pts, i++);
+		intel_flipq_write(display, flipq, intel_dsb_head(dsb), i++);
+		intel_flipq_write(display, flipq, LNL_FQ_INTERRUPT |
+				  LNL_FQ_DSB_ID(dsb_id) |
+				  LNL_FQ_DSB_SIZE(intel_dsb_size(dsb) / 64), i++);
+		intel_flipq_write(display, flipq, 0, i++);
+		break;
+	default:
+		MISSING_CASE(flipq->flipq_id);
+		return;
+	}
+}
+
+static void ptl_flipq_add(struct intel_display *display,
+			  struct intel_flipq *flipq,
+			  unsigned int pts,
+			  enum intel_dsb_id dsb_id,
+			  struct intel_dsb *dsb)
+{
+	int i = 0;
+
+	switch (flipq->flipq_id) {
+	case INTEL_FLIPQ_GENERAL:
+		intel_flipq_write(display, flipq, pts, i++);
+		intel_flipq_write(display, flipq, 0, i++);
+		intel_flipq_write(display, flipq, PTL_FQ_INTERRUPT |
+				  PTL_FQ_DSB_ID(dsb_id) |
+				  PTL_FQ_DSB_SIZE(intel_dsb_size(dsb) / 64), i++);
+		intel_flipq_write(display, flipq, intel_dsb_head(dsb), i++);
+		intel_flipq_write(display, flipq, 0, i++); /* DSB engine + size for second DSB */
+		intel_flipq_write(display, flipq, 0, i++); /* head for second DSB */
+		break;
+	case INTEL_FLIPQ_PLANE_1:
+	case INTEL_FLIPQ_PLANE_2:
+	case INTEL_FLIPQ_PLANE_3:
+		intel_flipq_write(display, flipq, pts, i++);
+		intel_flipq_write(display, flipq, 0, i++);
+		intel_flipq_write(display, flipq, PTL_FQ_INTERRUPT |
+				  PTL_FQ_DSB_ID(dsb_id) |
+				  PTL_FQ_DSB_SIZE(intel_dsb_size(dsb) / 64), i++);
+		intel_flipq_write(display, flipq, intel_dsb_head(dsb), i++);
+		break;
+	default:
+		MISSING_CASE(flipq->flipq_id);
+		return;
+	}
+}
+
+void intel_flipq_add(struct intel_crtc *crtc,
+		     enum intel_flipq_id flipq_id,
+		     unsigned int pts,
+		     enum intel_dsb_id dsb_id,
+		     struct intel_dsb *dsb)
+{
+	struct intel_display *display = to_intel_display(crtc);
+	struct intel_flipq *flipq = &crtc->flipq[flipq_id];
+
+	if (!assert_flipq_has_room(crtc, flipq_id))
+		return;
+
+	pts += intel_de_read(display, PIPEDMC_FPQ_TS(crtc->pipe));
+
+	intel_flipq_preempt(crtc, true);
+
+	if (DISPLAY_VER(display) >= 30)
+		ptl_flipq_add(display, flipq,  pts, dsb_id, dsb);
+	else
+		lnl_flipq_add(display, flipq,  pts, dsb_id, dsb);
+
+	flipq->tail = (flipq->tail + 1) % intel_flipq_size_entries(flipq->flipq_id);
+	intel_flipq_write_tail(crtc);
+
+	intel_flipq_preempt(crtc, false);
+
+	intel_flipq_sw_dmc_wake(crtc);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_flipq.h b/drivers/gpu/drm/i915/display/intel_flipq.h
new file mode 100644
index 000000000000..64d3c2a5bb7b
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_flipq.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2025 Intel Corporation
+ */
+
+#ifndef __INTEL_FLIPQ_H__
+#define __INTEL_FLIPQ_H__
+
+#include <linux/types.h>
+
+enum intel_dsb_id;
+enum intel_flipq_id;
+enum pipe;
+struct intel_crtc;
+struct intel_crtc_state;
+struct intel_display;
+struct intel_dsb;
+
+bool intel_flipq_supported(struct intel_display *display);
+void intel_flipq_init(struct intel_display *display);
+void intel_flipq_reset(struct intel_display *display, enum pipe pipe);
+
+void intel_flipq_enable(const struct intel_crtc_state *crtc_state);
+void intel_flipq_disable(const struct intel_crtc_state *old_crtc_state);
+
+void intel_flipq_add(struct intel_crtc *crtc,
+		     enum intel_flipq_id flip_queue_id,
+		     unsigned int pts,
+		     enum intel_dsb_id dsb_id,
+		     struct intel_dsb *dsb);
+
+#endif /* __INTEL_FLIPQ_H__ */
diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile
index 40d01751b49e..c83d72de81dd 100644
--- a/drivers/gpu/drm/xe/Makefile
+++ b/drivers/gpu/drm/xe/Makefile
@@ -254,6 +254,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
 	i915-display/intel_fbc.o \
 	i915-display/intel_fdi.o \
 	i915-display/intel_fifo_underrun.o \
+	i915-display/intel_flipq.o \
 	i915-display/intel_frontbuffer.o \
 	i915-display/intel_global_state.o \
 	i915-display/intel_gmbus.o \