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, 666 insertions, 0 deletions

diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
new file mode 100644
index 000000000..870f13e1d
--- /dev/null
+++ b/sound/soc/soc-compress.c
@@ -0,0 +1,666 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// soc-compress.c  --  ALSA SoC Compress
+//
+// Copyright (C) 2012 Intel Corp.
+//
+// Authors: Namarta Kohli <namartax.kohli@intel.com>
+//          Ramesh Babu K V <ramesh.babu@linux.intel.com>
+//          Vinod Koul <vinod.koul@linux.intel.com>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <sound/core.h>
+#include <sound/compress_params.h>
+#include <sound/compress_driver.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/soc-dpcm.h>
+#include <sound/soc-link.h>
+#include <linux/pm_runtime.h>
+
+static int snd_soc_compr_components_open(struct snd_compr_stream *cstream)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_component *component;
+	int ret = 0;
+	int i;
+
+	for_each_rtd_components(rtd, i, component) {
+		ret = snd_soc_component_module_get_when_open(component, cstream);
+		if (ret < 0)
+			break;
+
+		ret = snd_soc_component_compr_open(component, cstream);
+		if (ret < 0)
+			break;
+	}
+
+	return ret;
+}
+
+static void snd_soc_compr_components_free(struct snd_compr_stream *cstream,
+					  int rollback)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_component *component;
+	int i;
+
+	for_each_rtd_components(rtd, i, component) {
+		snd_soc_component_compr_free(component, cstream, rollback);
+		snd_soc_component_module_put_when_close(component, cstream, rollback);
+	}
+}
+
+static int soc_compr_clean(struct snd_compr_stream *cstream, int rollback)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	if (!rollback)
+		snd_soc_runtime_deactivate(rtd, stream);
+
+	snd_soc_dai_digital_mute(codec_dai, 1, stream);
+
+	if (!snd_soc_dai_active(cpu_dai))
+		cpu_dai->rate = 0;
+
+	if (!snd_soc_dai_active(codec_dai))
+		codec_dai->rate = 0;
+
+	snd_soc_link_compr_shutdown(cstream, rollback);
+
+	snd_soc_compr_components_free(cstream, rollback);
+
+	snd_soc_dai_compr_shutdown(cpu_dai, cstream, rollback);
+
+	if (!rollback)
+		snd_soc_dapm_stream_stop(rtd, stream);
+
+	mutex_unlock(&rtd->card->pcm_mutex);
+
+	snd_soc_pcm_component_pm_runtime_put(rtd, cstream, rollback);
+
+	return 0;
+}
+
+static int soc_compr_free(struct snd_compr_stream *cstream)
+{
+	return soc_compr_clean(cstream, 0);
+}
+
+static int soc_compr_open(struct snd_compr_stream *cstream)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+	int ret;
+
+	ret = snd_soc_pcm_component_pm_runtime_get(rtd, cstream);
+	if (ret < 0)
+		goto err_no_lock;
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
+	if (ret < 0)
+		goto err;
+
+	ret = snd_soc_compr_components_open(cstream);
+	if (ret < 0)
+		goto err;
+
+	ret = snd_soc_link_compr_startup(cstream);
+	if (ret < 0)
+		goto err;
+
+	snd_soc_runtime_activate(rtd, stream);
+err:
+	mutex_unlock(&rtd->card->pcm_mutex);
+err_no_lock:
+	if (ret < 0)
+		soc_compr_clean(cstream, 1);
+
+	return ret;
+}
+
+static int soc_compr_open_fe(struct snd_compr_stream *cstream)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_pcm_substream *fe_substream =
+		 fe->pcm->streams[cstream->direction].substream;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
+	struct snd_soc_dpcm *dpcm;
+	struct snd_soc_dapm_widget_list *list;
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+	int ret;
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+	fe->dpcm[stream].runtime = fe_substream->runtime;
+
+	ret = dpcm_path_get(fe, stream, &list);
+	if (ret < 0)
+		goto be_err;
+
+	/* calculate valid and active FE <-> BE dpcms */
+	dpcm_process_paths(fe, stream, &list, 1);
+	fe->dpcm[stream].runtime = fe_substream->runtime;
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_startup(fe, stream);
+	if (ret < 0) {
+		/* clean up all links */
+		for_each_dpcm_be(fe, stream, dpcm)
+			dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
+
+		dpcm_be_disconnect(fe, stream);
+		fe->dpcm[stream].runtime = NULL;
+		goto out;
+	}
+
+	ret = snd_soc_dai_compr_startup(cpu_dai, cstream);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_compr_components_open(cstream);
+	if (ret < 0)
+		goto open_err;
+
+	ret = snd_soc_link_compr_startup(cstream);
+	if (ret < 0)
+		goto machine_err;
+
+	dpcm_clear_pending_state(fe, stream);
+	dpcm_path_put(&list);
+
+	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+
+	mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
+	snd_soc_runtime_activate(fe, stream);
+	mutex_unlock(&fe->card->pcm_mutex);
+
+	mutex_unlock(&fe->card->mutex);
+
+	return 0;
+
+machine_err:
+	snd_soc_compr_components_free(cstream, 1);
+open_err:
+	snd_soc_dai_compr_shutdown(cpu_dai, cstream, 1);
+out:
+	dpcm_path_put(&list);
+be_err:
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+	mutex_unlock(&fe->card->mutex);
+	return ret;
+}
+
+static int soc_compr_free_fe(struct snd_compr_stream *cstream)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
+	struct snd_soc_dpcm *dpcm;
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	mutex_lock_nested(&fe->card->pcm_mutex, fe->card->pcm_subclass);
+	snd_soc_runtime_deactivate(fe, stream);
+	mutex_unlock(&fe->card->pcm_mutex);
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	dpcm_be_dai_hw_free(fe, stream);
+
+	dpcm_be_dai_shutdown(fe, stream);
+
+	/* mark FE's links ready to prune */
+	for_each_dpcm_be(fe, stream, dpcm)
+		dpcm->state = SND_SOC_DPCM_LINK_STATE_FREE;
+
+	dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_STOP);
+
+	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_CLOSE;
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+
+	dpcm_be_disconnect(fe, stream);
+
+	fe->dpcm[stream].runtime = NULL;
+
+	snd_soc_link_compr_shutdown(cstream, 0);
+
+	snd_soc_compr_components_free(cstream, 0);
+
+	snd_soc_dai_compr_shutdown(cpu_dai, cstream, 0);
+
+	mutex_unlock(&fe->card->mutex);
+	return 0;
+}
+
+static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+	int ret;
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	ret = snd_soc_component_compr_trigger(cstream, cmd);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
+	if (ret < 0)
+		goto out;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		snd_soc_dai_digital_mute(codec_dai, 0, stream);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		snd_soc_dai_digital_mute(codec_dai, 1, stream);
+		break;
+	}
+
+out:
+	mutex_unlock(&rtd->card->pcm_mutex);
+	return ret;
+}
+
+static int soc_compr_trigger_fe(struct snd_compr_stream *cstream, int cmd)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+	int ret;
+
+	if (cmd == SND_COMPR_TRIGGER_PARTIAL_DRAIN ||
+	    cmd == SND_COMPR_TRIGGER_DRAIN)
+		return snd_soc_component_compr_trigger(cstream, cmd);
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	ret = snd_soc_dai_compr_trigger(cpu_dai, cstream, cmd);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_component_compr_trigger(cstream, cmd);
+	if (ret < 0)
+		goto out;
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_trigger(fe, stream, cmd);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_START;
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_STOP;
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PAUSED;
+		break;
+	}
+
+out:
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+	mutex_unlock(&fe->card->mutex);
+	return ret;
+}
+
+static int soc_compr_set_params(struct snd_compr_stream *cstream,
+				struct snd_compr_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+	int ret;
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	/*
+	 * First we call set_params for the CPU DAI, then the component
+	 * driver this should configure the SoC side. If the machine has
+	 * compressed ops then we call that as well. The expectation is
+	 * that these callbacks will configure everything for this compress
+	 * path, like configuring a PCM port for a CODEC.
+	 */
+	ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
+	if (ret < 0)
+		goto err;
+
+	ret = snd_soc_component_compr_set_params(cstream, params);
+	if (ret < 0)
+		goto err;
+
+	ret = snd_soc_link_compr_set_params(cstream);
+	if (ret < 0)
+		goto err;
+
+	snd_soc_dapm_stream_event(rtd, stream, SND_SOC_DAPM_STREAM_START);
+
+	/* cancel any delayed stream shutdown that is pending */
+	rtd->pop_wait = 0;
+	mutex_unlock(&rtd->card->pcm_mutex);
+
+	cancel_delayed_work_sync(&rtd->delayed_work);
+
+	return 0;
+
+err:
+	mutex_unlock(&rtd->card->pcm_mutex);
+	return ret;
+}
+
+static int soc_compr_set_params_fe(struct snd_compr_stream *cstream,
+				   struct snd_compr_params *params)
+{
+	struct snd_soc_pcm_runtime *fe = cstream->private_data;
+	struct snd_pcm_substream *fe_substream =
+		 fe->pcm->streams[cstream->direction].substream;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(fe, 0);
+	int stream = cstream->direction; /* SND_COMPRESS_xxx is same as SNDRV_PCM_STREAM_xxx */
+	int ret;
+
+	mutex_lock_nested(&fe->card->mutex, SND_SOC_CARD_CLASS_RUNTIME);
+
+	/*
+	 * Create an empty hw_params for the BE as the machine driver must
+	 * fix this up to match DSP decoder and ASRC configuration.
+	 * I.e. machine driver fixup for compressed BE is mandatory.
+	 */
+	memset(&fe->dpcm[fe_substream->stream].hw_params, 0,
+		sizeof(struct snd_pcm_hw_params));
+
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+
+	ret = dpcm_be_dai_hw_params(fe, stream);
+	if (ret < 0)
+		goto out;
+
+	ret = dpcm_be_dai_prepare(fe, stream);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_dai_compr_set_params(cpu_dai, cstream, params);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_component_compr_set_params(cstream, params);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_link_compr_set_params(cstream);
+	if (ret < 0)
+		goto out;
+
+	dpcm_dapm_stream_event(fe, stream, SND_SOC_DAPM_STREAM_START);
+	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_PREPARE;
+
+out:
+	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_NO;
+	mutex_unlock(&fe->card->mutex);
+	return ret;
+}
+
+static int soc_compr_get_params(struct snd_compr_stream *cstream,
+				struct snd_codec *params)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int ret = 0;
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	ret = snd_soc_dai_compr_get_params(cpu_dai, cstream, params);
+	if (ret < 0)
+		goto err;
+
+	ret = snd_soc_component_compr_get_params(cstream, params);
+err:
+	mutex_unlock(&rtd->card->pcm_mutex);
+	return ret;
+}
+
+static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int ret;
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	ret = snd_soc_dai_compr_ack(cpu_dai, cstream, bytes);
+	if (ret < 0)
+		goto err;
+
+	ret = snd_soc_component_compr_ack(cstream, bytes);
+err:
+	mutex_unlock(&rtd->card->pcm_mutex);
+	return ret;
+}
+
+static int soc_compr_pointer(struct snd_compr_stream *cstream,
+			     struct snd_compr_tstamp *tstamp)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	int ret;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+
+	mutex_lock_nested(&rtd->card->pcm_mutex, rtd->card->pcm_subclass);
+
+	ret = snd_soc_dai_compr_pointer(cpu_dai, cstream, tstamp);
+	if (ret < 0)
+		goto out;
+
+	ret = snd_soc_component_compr_pointer(cstream, tstamp);
+out:
+	mutex_unlock(&rtd->card->pcm_mutex);
+	return ret;
+}
+
+static int soc_compr_set_metadata(struct snd_compr_stream *cstream,
+				  struct snd_compr_metadata *metadata)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int ret;
+
+	ret = snd_soc_dai_compr_set_metadata(cpu_dai, cstream, metadata);
+	if (ret < 0)
+		return ret;
+
+	return snd_soc_component_compr_set_metadata(cstream, metadata);
+}
+
+static int soc_compr_get_metadata(struct snd_compr_stream *cstream,
+				  struct snd_compr_metadata *metadata)
+{
+	struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	int ret;
+
+	ret = snd_soc_dai_compr_get_metadata(cpu_dai, cstream, metadata);
+	if (ret < 0)
+		return ret;
+
+	return snd_soc_component_compr_get_metadata(cstream, metadata);
+}
+
+/* ASoC Compress operations */
+static struct snd_compr_ops soc_compr_ops = {
+	.open		= soc_compr_open,
+	.free		= soc_compr_free,
+	.set_params	= soc_compr_set_params,
+	.set_metadata   = soc_compr_set_metadata,
+	.get_metadata	= soc_compr_get_metadata,
+	.get_params	= soc_compr_get_params,
+	.trigger	= soc_compr_trigger,
+	.pointer	= soc_compr_pointer,
+	.ack		= soc_compr_ack,
+	.get_caps	= snd_soc_component_compr_get_caps,
+	.get_codec_caps = snd_soc_component_compr_get_codec_caps,
+};
+
+/* ASoC Dynamic Compress operations */
+static struct snd_compr_ops soc_compr_dyn_ops = {
+	.open		= soc_compr_open_fe,
+	.free		= soc_compr_free_fe,
+	.set_params	= soc_compr_set_params_fe,
+	.get_params	= soc_compr_get_params,
+	.set_metadata   = soc_compr_set_metadata,
+	.get_metadata	= soc_compr_get_metadata,
+	.trigger	= soc_compr_trigger_fe,
+	.pointer	= soc_compr_pointer,
+	.ack		= soc_compr_ack,
+	.get_caps	= snd_soc_component_compr_get_caps,
+	.get_codec_caps = snd_soc_component_compr_get_codec_caps,
+};
+
+/**
+ * snd_soc_new_compress - create a new compress.
+ *
+ * @rtd: The runtime for which we will create compress
+ * @num: the device index number (zero based - shared with normal PCMs)
+ *
+ * Return: 0 for success, else error.
+ */
+int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
+{
+	struct snd_soc_component *component;
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	struct snd_compr *compr;
+	struct snd_pcm *be_pcm;
+	char new_name[64];
+	int ret = 0, direction = 0;
+	int playback = 0, capture = 0;
+	int i;
+
+	/*
+	 * make sure these are same value,
+	 * and then use these as equally
+	 */
+	BUILD_BUG_ON((int)SNDRV_PCM_STREAM_PLAYBACK != (int)SND_COMPRESS_PLAYBACK);
+	BUILD_BUG_ON((int)SNDRV_PCM_STREAM_CAPTURE  != (int)SND_COMPRESS_CAPTURE);
+
+	if (rtd->dai_link->num_cpus > 1 ||
+	    rtd->dai_link->num_codecs > 1) {
+		dev_err(rtd->card->dev,
+			"Compress ASoC: Multi CPU/Codec not supported\n");
+		return -EINVAL;
+	}
+
+	if (!codec_dai) {
+		dev_err(rtd->card->dev, "Missing codec\n");
+		return -EINVAL;
+	}
+
+	/* check client and interface hw capabilities */
+	if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
+	    snd_soc_dai_stream_valid(cpu_dai,   SNDRV_PCM_STREAM_PLAYBACK))
+		playback = 1;
+	if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
+	    snd_soc_dai_stream_valid(cpu_dai,   SNDRV_PCM_STREAM_CAPTURE))
+		capture = 1;
+
+	/*
+	 * Compress devices are unidirectional so only one of the directions
+	 * should be set, check for that (xor)
+	 */
+	if (playback + capture != 1) {
+		dev_err(rtd->card->dev,
+			"Compress ASoC: Invalid direction for P %d, C %d\n",
+			playback, capture);
+		return -EINVAL;
+	}
+
+	if (playback)
+		direction = SND_COMPRESS_PLAYBACK;
+	else
+		direction = SND_COMPRESS_CAPTURE;
+
+	compr = devm_kzalloc(rtd->card->dev, sizeof(*compr), GFP_KERNEL);
+	if (!compr)
+		return -ENOMEM;
+
+	compr->ops = devm_kzalloc(rtd->card->dev, sizeof(soc_compr_ops),
+				  GFP_KERNEL);
+	if (!compr->ops)
+		return -ENOMEM;
+
+	if (rtd->dai_link->dynamic) {
+		snprintf(new_name, sizeof(new_name), "(%s)",
+			rtd->dai_link->stream_name);
+
+		ret = snd_pcm_new_internal(rtd->card->snd_card, new_name, num,
+				rtd->dai_link->dpcm_playback,
+				rtd->dai_link->dpcm_capture, &be_pcm);
+		if (ret < 0) {
+			dev_err(rtd->card->dev,
+				"Compress ASoC: can't create compressed for %s: %d\n",
+				rtd->dai_link->name, ret);
+			return ret;
+		}
+
+		rtd->pcm = be_pcm;
+		rtd->fe_compr = 1;
+		if (rtd->dai_link->dpcm_playback)
+			be_pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream->private_data = rtd;
+		else if (rtd->dai_link->dpcm_capture)
+			be_pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream->private_data = rtd;
+		memcpy(compr->ops, &soc_compr_dyn_ops, sizeof(soc_compr_dyn_ops));
+	} else {
+		snprintf(new_name, sizeof(new_name), "%s %s-%d",
+			rtd->dai_link->stream_name, codec_dai->name, num);
+
+		memcpy(compr->ops, &soc_compr_ops, sizeof(soc_compr_ops));
+	}
+
+	for_each_rtd_components(rtd, i, component) {
+		if (!component->driver->compress_ops ||
+		    !component->driver->compress_ops->copy)
+			continue;
+
+		compr->ops->copy = snd_soc_component_compr_copy;
+		break;
+	}
+
+	ret = snd_compress_new(rtd->card->snd_card, num, direction,
+				new_name, compr);
+	if (ret < 0) {
+		component = asoc_rtd_to_codec(rtd, 0)->component;
+		dev_err(component->dev,
+			"Compress ASoC: can't create compress for codec %s: %d\n",
+			component->name, ret);
+		return ret;
+	}
+
+	/* DAPM dai link stream work */
+	rtd->close_delayed_work_func = snd_soc_close_delayed_work;
+
+	rtd->compr = compr;
+	compr->private_data = rtd;
+
+	dev_dbg(rtd->card->dev, "Compress ASoC: %s <-> %s mapping ok\n",
+		codec_dai->name, cpu_dai->name);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_new_compress);