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, 419 insertions, 0 deletions

diff --git a/sound/soc/tegra/tegra210_ope.c b/sound/soc/tegra/tegra210_ope.c
new file mode 100644
index 000000000..3dd2bdec6
--- /dev/null
+++ b/sound/soc/tegra/tegra210_ope.c
@@ -0,0 +1,419 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// tegra210_ope.c - Tegra210 OPE driver
+//
+// Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra210_mbdrc.h"
+#include "tegra210_ope.h"
+#include "tegra210_peq.h"
+#include "tegra_cif.h"
+
+static const struct reg_default tegra210_ope_reg_defaults[] = {
+	{ TEGRA210_OPE_RX_INT_MASK, 0x00000001},
+	{ TEGRA210_OPE_RX_CIF_CTRL, 0x00007700},
+	{ TEGRA210_OPE_TX_INT_MASK, 0x00000001},
+	{ TEGRA210_OPE_TX_CIF_CTRL, 0x00007700},
+	{ TEGRA210_OPE_CG, 0x1},
+};
+
+static int tegra210_ope_set_audio_cif(struct tegra210_ope *ope,
+				      struct snd_pcm_hw_params *params,
+				      unsigned int reg)
+{
+	int channels, audio_bits;
+	struct tegra_cif_conf cif_conf;
+
+	memset(&cif_conf, 0, sizeof(struct tegra_cif_conf));
+
+	channels = params_channels(params);
+	if (channels < 2)
+		return -EINVAL;
+
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		audio_bits = TEGRA_ACIF_BITS_16;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		audio_bits = TEGRA_ACIF_BITS_32;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	cif_conf.audio_ch = channels;
+	cif_conf.client_ch = channels;
+	cif_conf.audio_bits = audio_bits;
+	cif_conf.client_bits = audio_bits;
+
+	tegra_set_cif(ope->regmap, reg, &cif_conf);
+
+	return 0;
+}
+
+static int tegra210_ope_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *dai)
+{
+	struct device *dev = dai->dev;
+	struct tegra210_ope *ope = snd_soc_dai_get_drvdata(dai);
+	int err;
+
+	/* Set RX and TX CIF */
+	err = tegra210_ope_set_audio_cif(ope, params,
+					 TEGRA210_OPE_RX_CIF_CTRL);
+	if (err) {
+		dev_err(dev, "Can't set OPE RX CIF: %d\n", err);
+		return err;
+	}
+
+	err = tegra210_ope_set_audio_cif(ope, params,
+					 TEGRA210_OPE_TX_CIF_CTRL);
+	if (err) {
+		dev_err(dev, "Can't set OPE TX CIF: %d\n", err);
+		return err;
+	}
+
+	tegra210_mbdrc_hw_params(dai->component);
+
+	return err;
+}
+
+static int tegra210_ope_component_probe(struct snd_soc_component *cmpnt)
+{
+	struct tegra210_ope *ope = dev_get_drvdata(cmpnt->dev);
+
+	tegra210_peq_component_init(cmpnt);
+	tegra210_mbdrc_component_init(cmpnt);
+
+	/*
+	 * The OPE, PEQ and MBDRC functionalities are combined under one
+	 * device registered by OPE driver. In fact OPE HW block includes
+	 * sub blocks PEQ and MBDRC. However driver registers separate
+	 * regmap interfaces for each of these. ASoC core depends on
+	 * dev_get_regmap() to populate the regmap field for a given ASoC
+	 * component. A component can have one regmap reference and since
+	 * the DAPM routes depend on OPE regmap only, below explicit
+	 * assignment is done to highlight this. This is needed for ASoC
+	 * core to access correct regmap during DAPM path setup.
+	 */
+	snd_soc_component_init_regmap(cmpnt, ope->regmap);
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops tegra210_ope_dai_ops = {
+	.hw_params	= tegra210_ope_hw_params,
+};
+
+static struct snd_soc_dai_driver tegra210_ope_dais[] = {
+	{
+		.name = "OPE-RX-CIF",
+		.playback = {
+			.stream_name = "RX-CIF-Playback",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = SNDRV_PCM_FMTBIT_S8 |
+				SNDRV_PCM_FMTBIT_S16_LE |
+				SNDRV_PCM_FMTBIT_S32_LE,
+		},
+		.capture = {
+			.stream_name = "RX-CIF-Capture",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = SNDRV_PCM_FMTBIT_S8 |
+				SNDRV_PCM_FMTBIT_S16_LE |
+				SNDRV_PCM_FMTBIT_S32_LE,
+		},
+	},
+	{
+		.name = "OPE-TX-CIF",
+		.playback = {
+			.stream_name = "TX-CIF-Playback",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = SNDRV_PCM_FMTBIT_S8 |
+				SNDRV_PCM_FMTBIT_S16_LE |
+				SNDRV_PCM_FMTBIT_S32_LE,
+		},
+		.capture = {
+			.stream_name = "TX-CIF-Capture",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = SNDRV_PCM_FMTBIT_S8 |
+				SNDRV_PCM_FMTBIT_S16_LE |
+				SNDRV_PCM_FMTBIT_S32_LE,
+		},
+		.ops = &tegra210_ope_dai_ops,
+	}
+};
+
+static const struct snd_soc_dapm_widget tegra210_ope_widgets[] = {
+	SND_SOC_DAPM_AIF_IN("RX", NULL, 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("TX", NULL, 0, TEGRA210_OPE_ENABLE,
+			     TEGRA210_OPE_EN_SHIFT, 0),
+};
+
+#define OPE_ROUTES(sname)					\
+	{ "RX XBAR-" sname,	NULL,	"XBAR-TX" },		\
+	{ "RX-CIF-" sname,	NULL,	"RX XBAR-" sname },	\
+	{ "RX",			NULL,	"RX-CIF-" sname },	\
+	{ "TX-CIF-" sname,	NULL,	"TX" },			\
+	{ "TX XBAR-" sname,	NULL,	"TX-CIF-" sname },	\
+	{ "XBAR-RX",		NULL,	"TX XBAR-" sname }
+
+static const struct snd_soc_dapm_route tegra210_ope_routes[] = {
+	{ "TX", NULL, "RX" },
+	OPE_ROUTES("Playback"),
+	OPE_ROUTES("Capture"),
+};
+
+static const char * const tegra210_ope_data_dir_text[] = {
+	"MBDRC to PEQ",
+	"PEQ to MBDRC"
+};
+
+static const struct soc_enum tegra210_ope_data_dir_enum =
+	SOC_ENUM_SINGLE(TEGRA210_OPE_DIR, TEGRA210_OPE_DIR_SHIFT,
+			2, tegra210_ope_data_dir_text);
+
+static int tegra210_ope_get_data_dir(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+
+	ucontrol->value.enumerated.item[0] = ope->data_dir;
+
+	return 0;
+}
+
+static int tegra210_ope_put_data_dir(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+	unsigned int value = ucontrol->value.enumerated.item[0];
+
+	if (value == ope->data_dir)
+		return 0;
+
+	ope->data_dir = value;
+
+	return 1;
+}
+
+static const struct snd_kcontrol_new tegra210_ope_controls[] = {
+	SOC_ENUM_EXT("Data Flow Direction", tegra210_ope_data_dir_enum,
+		     tegra210_ope_get_data_dir, tegra210_ope_put_data_dir),
+};
+
+static const struct snd_soc_component_driver tegra210_ope_cmpnt = {
+	.probe			= tegra210_ope_component_probe,
+	.dapm_widgets		= tegra210_ope_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(tegra210_ope_widgets),
+	.dapm_routes		= tegra210_ope_routes,
+	.num_dapm_routes	= ARRAY_SIZE(tegra210_ope_routes),
+	.controls		= tegra210_ope_controls,
+	.num_controls		= ARRAY_SIZE(tegra210_ope_controls),
+};
+
+static bool tegra210_ope_wr_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_OPE_RX_INT_MASK ... TEGRA210_OPE_RX_CIF_CTRL:
+	case TEGRA210_OPE_TX_INT_MASK ... TEGRA210_OPE_TX_CIF_CTRL:
+	case TEGRA210_OPE_ENABLE ... TEGRA210_OPE_CG:
+	case TEGRA210_OPE_DIR:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra210_ope_rd_reg(struct device *dev, unsigned int reg)
+{
+	if (tegra210_ope_wr_reg(dev, reg))
+		return true;
+
+	switch (reg) {
+	case TEGRA210_OPE_RX_STATUS:
+	case TEGRA210_OPE_RX_INT_STATUS:
+	case TEGRA210_OPE_TX_STATUS:
+	case TEGRA210_OPE_TX_INT_STATUS:
+	case TEGRA210_OPE_STATUS:
+	case TEGRA210_OPE_INT_STATUS:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra210_ope_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_OPE_RX_STATUS:
+	case TEGRA210_OPE_RX_INT_STATUS:
+	case TEGRA210_OPE_TX_STATUS:
+	case TEGRA210_OPE_TX_INT_STATUS:
+	case TEGRA210_OPE_SOFT_RESET:
+	case TEGRA210_OPE_STATUS:
+	case TEGRA210_OPE_INT_STATUS:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config tegra210_ope_regmap_config = {
+	.reg_bits		= 32,
+	.reg_stride		= 4,
+	.val_bits		= 32,
+	.max_register		= TEGRA210_OPE_DIR,
+	.writeable_reg		= tegra210_ope_wr_reg,
+	.readable_reg		= tegra210_ope_rd_reg,
+	.volatile_reg		= tegra210_ope_volatile_reg,
+	.reg_defaults		= tegra210_ope_reg_defaults,
+	.num_reg_defaults	= ARRAY_SIZE(tegra210_ope_reg_defaults),
+	.cache_type		= REGCACHE_FLAT,
+};
+
+static int tegra210_ope_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct tegra210_ope *ope;
+	void __iomem *regs;
+	int err;
+
+	ope = devm_kzalloc(dev, sizeof(*ope), GFP_KERNEL);
+	if (!ope)
+		return -ENOMEM;
+
+	regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	ope->regmap = devm_regmap_init_mmio(dev, regs,
+					    &tegra210_ope_regmap_config);
+	if (IS_ERR(ope->regmap)) {
+		dev_err(dev, "regmap init failed\n");
+		return PTR_ERR(ope->regmap);
+	}
+
+	regcache_cache_only(ope->regmap, true);
+
+	dev_set_drvdata(dev, ope);
+
+	err = tegra210_peq_regmap_init(pdev);
+	if (err < 0) {
+		dev_err(dev, "PEQ init failed\n");
+		return err;
+	}
+
+	err = tegra210_mbdrc_regmap_init(pdev);
+	if (err < 0) {
+		dev_err(dev, "MBDRC init failed\n");
+		return err;
+	}
+
+	err = devm_snd_soc_register_component(dev, &tegra210_ope_cmpnt,
+					      tegra210_ope_dais,
+					      ARRAY_SIZE(tegra210_ope_dais));
+	if (err) {
+		dev_err(dev, "can't register OPE component, err: %d\n", err);
+		return err;
+	}
+
+	pm_runtime_enable(dev);
+
+	return 0;
+}
+
+static int tegra210_ope_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static int __maybe_unused tegra210_ope_runtime_suspend(struct device *dev)
+{
+	struct tegra210_ope *ope = dev_get_drvdata(dev);
+
+	tegra210_peq_save(ope->peq_regmap, ope->peq_biquad_gains,
+			  ope->peq_biquad_shifts);
+
+	regcache_cache_only(ope->mbdrc_regmap, true);
+	regcache_cache_only(ope->peq_regmap, true);
+	regcache_cache_only(ope->regmap, true);
+
+	regcache_mark_dirty(ope->regmap);
+	regcache_mark_dirty(ope->peq_regmap);
+	regcache_mark_dirty(ope->mbdrc_regmap);
+
+	return 0;
+}
+
+static int __maybe_unused tegra210_ope_runtime_resume(struct device *dev)
+{
+	struct tegra210_ope *ope = dev_get_drvdata(dev);
+
+	regcache_cache_only(ope->regmap, false);
+	regcache_cache_only(ope->peq_regmap, false);
+	regcache_cache_only(ope->mbdrc_regmap, false);
+
+	regcache_sync(ope->regmap);
+	regcache_sync(ope->peq_regmap);
+	regcache_sync(ope->mbdrc_regmap);
+
+	tegra210_peq_restore(ope->peq_regmap, ope->peq_biquad_gains,
+			     ope->peq_biquad_shifts);
+
+	return 0;
+}
+
+static const struct dev_pm_ops tegra210_ope_pm_ops = {
+	SET_RUNTIME_PM_OPS(tegra210_ope_runtime_suspend,
+			   tegra210_ope_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
+};
+
+static const struct of_device_id tegra210_ope_of_match[] = {
+	{ .compatible = "nvidia,tegra210-ope" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tegra210_ope_of_match);
+
+static struct platform_driver tegra210_ope_driver = {
+	.driver = {
+		.name = "tegra210-ope",
+		.of_match_table = tegra210_ope_of_match,
+		.pm = &tegra210_ope_pm_ops,
+	},
+	.probe = tegra210_ope_probe,
+	.remove = tegra210_ope_remove,
+};
+module_platform_driver(tegra210_ope_driver)
+
+MODULE_AUTHOR("Sumit Bhattacharya <sumitb@nvidia.com>");
+MODULE_DESCRIPTION("Tegra210 OPE ASoC driver");
+MODULE_LICENSE("GPL");