Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 408 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_drrs.c b/drivers/gpu/drm/i915/display/intel_drrs.c
new file mode 100644
index 000000000..5b9e44443
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_drrs.c
@@ -0,0 +1,408 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "intel_atomic.h"
+#include "intel_de.h"
+#include "intel_display_types.h"
+#include "intel_drrs.h"
+#include "intel_panel.h"
+
+/**
+ * DOC: Display Refresh Rate Switching (DRRS)
+ *
+ * Display Refresh Rate Switching (DRRS) is a power conservation feature
+ * which enables swtching between low and high refresh rates,
+ * dynamically, based on the usage scenario. This feature is applicable
+ * for internal panels.
+ *
+ * Indication that the panel supports DRRS is given by the panel EDID, which
+ * would list multiple refresh rates for one resolution.
+ *
+ * DRRS is of 2 types - static and seamless.
+ * Static DRRS involves changing refresh rate (RR) by doing a full modeset
+ * (may appear as a blink on screen) and is used in dock-undock scenario.
+ * Seamless DRRS involves changing RR without any visual effect to the user
+ * and can be used during normal system usage. This is done by programming
+ * certain registers.
+ *
+ * Support for static/seamless DRRS may be indicated in the VBT based on
+ * inputs from the panel spec.
+ *
+ * DRRS saves power by switching to low RR based on usage scenarios.
+ *
+ * The implementation is based on frontbuffer tracking implementation.  When
+ * there is a disturbance on the screen triggered by user activity or a periodic
+ * system activity, DRRS is disabled (RR is changed to high RR).  When there is
+ * no movement on screen, after a timeout of 1 second, a switch to low RR is
+ * made.
+ *
+ * For integration with frontbuffer tracking code, intel_drrs_invalidate()
+ * and intel_drrs_flush() are called.
+ *
+ * DRRS can be further extended to support other internal panels and also
+ * the scenario of video playback wherein RR is set based on the rate
+ * requested by userspace.
+ */
+
+const char *intel_drrs_type_str(enum drrs_type drrs_type)
+{
+	static const char * const str[] = {
+		[DRRS_TYPE_NONE] = "none",
+		[DRRS_TYPE_STATIC] = "static",
+		[DRRS_TYPE_SEAMLESS] = "seamless",
+	};
+
+	if (drrs_type >= ARRAY_SIZE(str))
+		return "<invalid>";
+
+	return str[drrs_type];
+}
+
+static void
+intel_drrs_set_refresh_rate_pipeconf(struct intel_crtc *crtc,
+				     enum drrs_refresh_rate refresh_rate)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc->drrs.cpu_transcoder;
+	u32 val, bit;
+
+	if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		bit = PIPECONF_REFRESH_RATE_ALT_VLV;
+	else
+		bit = PIPECONF_REFRESH_RATE_ALT_ILK;
+
+	val = intel_de_read(dev_priv, PIPECONF(cpu_transcoder));
+
+	if (refresh_rate == DRRS_REFRESH_RATE_LOW)
+		val |= bit;
+	else
+		val &= ~bit;
+
+	intel_de_write(dev_priv, PIPECONF(cpu_transcoder), val);
+}
+
+static void
+intel_drrs_set_refresh_rate_m_n(struct intel_crtc *crtc,
+				enum drrs_refresh_rate refresh_rate)
+{
+	intel_cpu_transcoder_set_m1_n1(crtc, crtc->drrs.cpu_transcoder,
+				       refresh_rate == DRRS_REFRESH_RATE_LOW ?
+				       &crtc->drrs.m2_n2 : &crtc->drrs.m_n);
+}
+
+bool intel_drrs_is_active(struct intel_crtc *crtc)
+{
+	return crtc->drrs.cpu_transcoder != INVALID_TRANSCODER;
+}
+
+static void intel_drrs_set_state(struct intel_crtc *crtc,
+				 enum drrs_refresh_rate refresh_rate)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+	if (refresh_rate == crtc->drrs.refresh_rate)
+		return;
+
+	if (intel_cpu_transcoder_has_m2_n2(dev_priv, crtc->drrs.cpu_transcoder))
+		intel_drrs_set_refresh_rate_pipeconf(crtc, refresh_rate);
+	else
+		intel_drrs_set_refresh_rate_m_n(crtc, refresh_rate);
+
+	crtc->drrs.refresh_rate = refresh_rate;
+}
+
+static void intel_drrs_schedule_work(struct intel_crtc *crtc)
+{
+	mod_delayed_work(system_wq, &crtc->drrs.work, msecs_to_jiffies(1000));
+}
+
+static unsigned int intel_drrs_frontbuffer_bits(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	unsigned int frontbuffer_bits;
+
+	frontbuffer_bits = INTEL_FRONTBUFFER_ALL_MASK(crtc->pipe);
+
+	for_each_intel_crtc_in_pipe_mask(&i915->drm, crtc,
+					 crtc_state->bigjoiner_pipes)
+		frontbuffer_bits |= INTEL_FRONTBUFFER_ALL_MASK(crtc->pipe);
+
+	return frontbuffer_bits;
+}
+
+/**
+ * intel_drrs_activate - activate DRRS
+ * @crtc_state: the crtc state
+ *
+ * Activates DRRS on the crtc.
+ */
+void intel_drrs_activate(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!crtc_state->has_drrs)
+		return;
+
+	if (!crtc_state->hw.active)
+		return;
+
+	if (intel_crtc_is_bigjoiner_slave(crtc_state))
+		return;
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	crtc->drrs.cpu_transcoder = crtc_state->cpu_transcoder;
+	crtc->drrs.m_n = crtc_state->dp_m_n;
+	crtc->drrs.m2_n2 = crtc_state->dp_m2_n2;
+	crtc->drrs.frontbuffer_bits = intel_drrs_frontbuffer_bits(crtc_state);
+	crtc->drrs.busy_frontbuffer_bits = 0;
+
+	intel_drrs_schedule_work(crtc);
+
+	mutex_unlock(&crtc->drrs.mutex);
+}
+
+/**
+ * intel_drrs_deactivate - deactivate DRRS
+ * @old_crtc_state: the old crtc state
+ *
+ * Deactivates DRRS on the crtc.
+ */
+void intel_drrs_deactivate(const struct intel_crtc_state *old_crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
+
+	if (!old_crtc_state->has_drrs)
+		return;
+
+	if (!old_crtc_state->hw.active)
+		return;
+
+	if (intel_crtc_is_bigjoiner_slave(old_crtc_state))
+		return;
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	if (intel_drrs_is_active(crtc))
+		intel_drrs_set_state(crtc, DRRS_REFRESH_RATE_HIGH);
+
+	crtc->drrs.cpu_transcoder = INVALID_TRANSCODER;
+	crtc->drrs.frontbuffer_bits = 0;
+	crtc->drrs.busy_frontbuffer_bits = 0;
+
+	mutex_unlock(&crtc->drrs.mutex);
+
+	cancel_delayed_work_sync(&crtc->drrs.work);
+}
+
+static void intel_drrs_downclock_work(struct work_struct *work)
+{
+	struct intel_crtc *crtc = container_of(work, typeof(*crtc), drrs.work.work);
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	if (intel_drrs_is_active(crtc) && !crtc->drrs.busy_frontbuffer_bits)
+		intel_drrs_set_state(crtc, DRRS_REFRESH_RATE_LOW);
+
+	mutex_unlock(&crtc->drrs.mutex);
+}
+
+static void intel_drrs_frontbuffer_update(struct drm_i915_private *dev_priv,
+					  unsigned int all_frontbuffer_bits,
+					  bool invalidate)
+{
+	struct intel_crtc *crtc;
+
+	for_each_intel_crtc(&dev_priv->drm, crtc) {
+		unsigned int frontbuffer_bits;
+
+		mutex_lock(&crtc->drrs.mutex);
+
+		frontbuffer_bits = all_frontbuffer_bits & crtc->drrs.frontbuffer_bits;
+		if (!frontbuffer_bits) {
+			mutex_unlock(&crtc->drrs.mutex);
+			continue;
+		}
+
+		if (invalidate)
+			crtc->drrs.busy_frontbuffer_bits |= frontbuffer_bits;
+		else
+			crtc->drrs.busy_frontbuffer_bits &= ~frontbuffer_bits;
+
+		/* flush/invalidate means busy screen hence upclock */
+		intel_drrs_set_state(crtc, DRRS_REFRESH_RATE_HIGH);
+
+		/*
+		 * flush also means no more activity hence schedule downclock, if all
+		 * other fbs are quiescent too
+		 */
+		if (!crtc->drrs.busy_frontbuffer_bits)
+			intel_drrs_schedule_work(crtc);
+		else
+			cancel_delayed_work(&crtc->drrs.work);
+
+		mutex_unlock(&crtc->drrs.mutex);
+	}
+}
+
+/**
+ * intel_drrs_invalidate - Disable Idleness DRRS
+ * @dev_priv: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called everytime rendering on the given planes start.
+ * Hence DRRS needs to be Upclocked, i.e. (LOW_RR -> HIGH_RR).
+ *
+ * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits.
+ */
+void intel_drrs_invalidate(struct drm_i915_private *dev_priv,
+			   unsigned int frontbuffer_bits)
+{
+	intel_drrs_frontbuffer_update(dev_priv, frontbuffer_bits, true);
+}
+
+/**
+ * intel_drrs_flush - Restart Idleness DRRS
+ * @dev_priv: i915 device
+ * @frontbuffer_bits: frontbuffer plane tracking bits
+ *
+ * This function gets called every time rendering on the given planes has
+ * completed or flip on a crtc is completed. So DRRS should be upclocked
+ * (LOW_RR -> HIGH_RR). And also Idleness detection should be started again,
+ * if no other planes are dirty.
+ *
+ * Dirty frontbuffers relevant to DRRS are tracked in busy_frontbuffer_bits.
+ */
+void intel_drrs_flush(struct drm_i915_private *dev_priv,
+		      unsigned int frontbuffer_bits)
+{
+	intel_drrs_frontbuffer_update(dev_priv, frontbuffer_bits, false);
+}
+
+/**
+ * intel_drrs_crtc_init - Init DRRS for CRTC
+ * @crtc: crtc
+ *
+ * This function is called only once at driver load to initialize basic
+ * DRRS stuff.
+ *
+ */
+void intel_drrs_crtc_init(struct intel_crtc *crtc)
+{
+	INIT_DELAYED_WORK(&crtc->drrs.work, intel_drrs_downclock_work);
+	mutex_init(&crtc->drrs.mutex);
+	crtc->drrs.cpu_transcoder = INVALID_TRANSCODER;
+}
+
+static int intel_drrs_debugfs_status_show(struct seq_file *m, void *unused)
+{
+	struct intel_crtc *crtc = m->private;
+	const struct intel_crtc_state *crtc_state;
+	int ret;
+
+	ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+	if (ret)
+		return ret;
+
+	crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	mutex_lock(&crtc->drrs.mutex);
+
+	seq_printf(m, "DRRS enabled: %s\n",
+		   str_yes_no(crtc_state->has_drrs));
+
+	seq_printf(m, "DRRS active: %s\n",
+		   str_yes_no(intel_drrs_is_active(crtc)));
+
+	seq_printf(m, "DRRS refresh rate: %s\n",
+		   crtc->drrs.refresh_rate == DRRS_REFRESH_RATE_LOW ?
+		   "low" : "high");
+
+	seq_printf(m, "DRRS busy frontbuffer bits: 0x%x\n",
+		   crtc->drrs.busy_frontbuffer_bits);
+
+	mutex_unlock(&crtc->drrs.mutex);
+
+	drm_modeset_unlock(&crtc->base.mutex);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_drrs_debugfs_status);
+
+static int intel_drrs_debugfs_ctl_set(void *data, u64 val)
+{
+	struct intel_crtc *crtc = data;
+	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct intel_crtc_state *crtc_state;
+	struct drm_crtc_commit *commit;
+	int ret;
+
+	ret = drm_modeset_lock_single_interruptible(&crtc->base.mutex);
+	if (ret)
+		return ret;
+
+	crtc_state = to_intel_crtc_state(crtc->base.state);
+
+	if (!crtc_state->hw.active ||
+	    !crtc_state->has_drrs)
+		goto out;
+
+	commit = crtc_state->uapi.commit;
+	if (commit) {
+		ret = wait_for_completion_interruptible(&commit->hw_done);
+		if (ret)
+			goto out;
+	}
+
+	drm_dbg(&i915->drm,
+		"Manually %sactivating DRRS\n", val ? "" : "de");
+
+	if (val)
+		intel_drrs_activate(crtc_state);
+	else
+		intel_drrs_deactivate(crtc_state);
+
+out:
+	drm_modeset_unlock(&crtc->base.mutex);
+
+	return ret;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(intel_drrs_debugfs_ctl_fops,
+			NULL, intel_drrs_debugfs_ctl_set, "%llu\n");
+
+void intel_drrs_crtc_debugfs_add(struct intel_crtc *crtc)
+{
+	debugfs_create_file("i915_drrs_status", 0444, crtc->base.debugfs_entry,
+			    crtc, &intel_drrs_debugfs_status_fops);
+
+	debugfs_create_file("i915_drrs_ctl", 0644, crtc->base.debugfs_entry,
+			    crtc, &intel_drrs_debugfs_ctl_fops);
+}
+
+static int intel_drrs_debugfs_type_show(struct seq_file *m, void *unused)
+{
+	struct intel_connector *connector = m->private;
+
+	seq_printf(m, "DRRS type: %s\n",
+		   intel_drrs_type_str(intel_panel_drrs_type(connector)));
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(intel_drrs_debugfs_type);
+
+void intel_drrs_connector_debugfs_add(struct intel_connector *connector)
+{
+	if (intel_panel_drrs_type(connector) == DRRS_TYPE_NONE)
+		return;
+
+	debugfs_create_file("i915_drrs_type", 0444, connector->base.debugfs_entry,
+			    connector, &intel_drrs_debugfs_type_fops);
+}