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, 824 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt1308-sdw.c b/sound/soc/codecs/rt1308-sdw.c
new file mode 100644
index 000000000..ca2790d63
--- /dev/null
+++ b/sound/soc/codecs/rt1308-sdw.c
@@ -0,0 +1,824 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// rt1308-sdw.c -- rt1308 ALSA SoC audio driver
+//
+// Copyright(c) 2019 Realtek Semiconductor Corp.
+//
+//
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/pm_runtime.h>
+#include <linux/mod_devicetable.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include <linux/soundwire/sdw_registers.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/sdw.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+
+#include "rt1308.h"
+#include "rt1308-sdw.h"
+
+static bool rt1308_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0x00e0:
+	case 0x00f0:
+	case 0x2f01 ... 0x2f07:
+	case 0x3000 ... 0x3001:
+	case 0x3004 ... 0x3005:
+	case 0x3008:
+	case 0x300a:
+	case 0xc000 ... 0xcff3:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rt1308_volatile_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case 0x2f01 ... 0x2f07:
+	case 0x3000 ... 0x3001:
+	case 0x3004 ... 0x3005:
+	case 0x3008:
+	case 0x300a:
+	case 0xc000:
+	case 0xc710:
+	case 0xc860 ... 0xc863:
+	case 0xc870 ... 0xc873:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config rt1308_sdw_regmap = {
+	.reg_bits = 32,
+	.val_bits = 8,
+	.readable_reg = rt1308_readable_register,
+	.volatile_reg = rt1308_volatile_register,
+	.max_register = 0xcfff,
+	.reg_defaults = rt1308_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(rt1308_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+	.use_single_read = true,
+	.use_single_write = true,
+};
+
+/* Bus clock frequency */
+#define RT1308_CLK_FREQ_9600000HZ 9600000
+#define RT1308_CLK_FREQ_12000000HZ 12000000
+#define RT1308_CLK_FREQ_6000000HZ 6000000
+#define RT1308_CLK_FREQ_4800000HZ 4800000
+#define RT1308_CLK_FREQ_2400000HZ 2400000
+#define RT1308_CLK_FREQ_12288000HZ 12288000
+
+static int rt1308_clock_config(struct device *dev)
+{
+	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+	unsigned int clk_freq, value;
+
+	clk_freq = (rt1308->params.curr_dr_freq >> 1);
+
+	switch (clk_freq) {
+	case RT1308_CLK_FREQ_12000000HZ:
+		value = 0x0;
+		break;
+	case RT1308_CLK_FREQ_6000000HZ:
+		value = 0x1;
+		break;
+	case RT1308_CLK_FREQ_9600000HZ:
+		value = 0x2;
+		break;
+	case RT1308_CLK_FREQ_4800000HZ:
+		value = 0x3;
+		break;
+	case RT1308_CLK_FREQ_2400000HZ:
+		value = 0x4;
+		break;
+	case RT1308_CLK_FREQ_12288000HZ:
+		value = 0x5;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_write(rt1308->regmap, 0xe0, value);
+	regmap_write(rt1308->regmap, 0xf0, value);
+
+	dev_dbg(dev, "%s complete, clk_freq=%d\n", __func__, clk_freq);
+
+	return 0;
+}
+
+static int rt1308_read_prop(struct sdw_slave *slave)
+{
+	struct sdw_slave_prop *prop = &slave->prop;
+	int nval, i;
+	u32 bit;
+	unsigned long addr;
+	struct sdw_dpn_prop *dpn;
+
+	prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
+	prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
+
+	prop->paging_support = true;
+
+	/* first we need to allocate memory for set bits in port lists */
+	prop->source_ports = 0x00; /* BITMAP: 00010100 (not enable yet) */
+	prop->sink_ports = 0x2; /* BITMAP:  00000010 */
+
+	/* for sink */
+	nval = hweight32(prop->sink_ports);
+	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
+						sizeof(*prop->sink_dpn_prop),
+						GFP_KERNEL);
+	if (!prop->sink_dpn_prop)
+		return -ENOMEM;
+
+	i = 0;
+	dpn = prop->sink_dpn_prop;
+	addr = prop->sink_ports;
+	for_each_set_bit(bit, &addr, 32) {
+		dpn[i].num = bit;
+		dpn[i].type = SDW_DPN_FULL;
+		dpn[i].simple_ch_prep_sm = true;
+		dpn[i].ch_prep_timeout = 10;
+		i++;
+	}
+
+	/* set the timeout values */
+	prop->clk_stop_timeout = 20;
+
+	dev_dbg(&slave->dev, "%s\n", __func__);
+
+	return 0;
+}
+
+static void rt1308_apply_calib_params(struct rt1308_sdw_priv *rt1308)
+{
+	unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
+	unsigned int efuse_c_btl_l, efuse_c_btl_r;
+
+	/* read efuse to apply calibration parameters */
+	regmap_write(rt1308->regmap, 0xc7f0, 0x04);
+	regmap_write(rt1308->regmap, 0xc7f1, 0xfe);
+	msleep(100);
+	regmap_write(rt1308->regmap, 0xc7f0, 0x44);
+	msleep(20);
+	regmap_write(rt1308->regmap, 0xc240, 0x10);
+
+	regmap_read(rt1308->regmap, 0xc861, &tmp);
+	efuse_m_btl_l = tmp;
+	regmap_read(rt1308->regmap, 0xc860, &tmp);
+	efuse_m_btl_l = efuse_m_btl_l | (tmp << 8);
+	regmap_read(rt1308->regmap, 0xc863, &tmp);
+	efuse_c_btl_l = tmp;
+	regmap_read(rt1308->regmap, 0xc862, &tmp);
+	efuse_c_btl_l = efuse_c_btl_l | (tmp << 8);
+	regmap_read(rt1308->regmap, 0xc871, &tmp);
+	efuse_m_btl_r = tmp;
+	regmap_read(rt1308->regmap, 0xc870, &tmp);
+	efuse_m_btl_r = efuse_m_btl_r | (tmp << 8);
+	regmap_read(rt1308->regmap, 0xc873, &tmp);
+	efuse_c_btl_r = tmp;
+	regmap_read(rt1308->regmap, 0xc872, &tmp);
+	efuse_c_btl_r = efuse_c_btl_r | (tmp << 8);
+	dev_dbg(&rt1308->sdw_slave->dev, "%s m_btl_l=0x%x, m_btl_r=0x%x\n", __func__,
+		efuse_m_btl_l, efuse_m_btl_r);
+	dev_dbg(&rt1308->sdw_slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
+		efuse_c_btl_l, efuse_c_btl_r);
+}
+
+static void rt1308_apply_bq_params(struct rt1308_sdw_priv *rt1308)
+{
+	unsigned int i, reg, data;
+
+	for (i = 0; i < rt1308->bq_params_cnt; i += 3) {
+		reg = rt1308->bq_params[i] | (rt1308->bq_params[i + 1] << 8);
+		data = rt1308->bq_params[i + 2];
+		regmap_write(rt1308->regmap, reg, data);
+	}
+}
+
+static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
+{
+	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+	int ret = 0;
+	unsigned int tmp;
+
+	if (rt1308->hw_init)
+		return 0;
+
+	if (rt1308->first_hw_init) {
+		regcache_cache_only(rt1308->regmap, false);
+		regcache_cache_bypass(rt1308->regmap, true);
+	}
+
+	/*
+	 * PM runtime is only enabled when a Slave reports as Attached
+	 */
+	if (!rt1308->first_hw_init) {
+		/* set autosuspend parameters */
+		pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
+		pm_runtime_use_autosuspend(&slave->dev);
+
+		/* update count of parent 'active' children */
+		pm_runtime_set_active(&slave->dev);
+
+		/* make sure the device does not suspend immediately */
+		pm_runtime_mark_last_busy(&slave->dev);
+
+		pm_runtime_enable(&slave->dev);
+	}
+
+	pm_runtime_get_noresume(&slave->dev);
+
+	/* sw reset */
+	regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
+
+	regmap_read(rt1308->regmap, 0xc710, &tmp);
+	rt1308->hw_ver = tmp;
+	dev_dbg(dev, "%s, hw_ver=0x%x\n", __func__, rt1308->hw_ver);
+
+	/* initial settings */
+	regmap_write(rt1308->regmap, 0xc103, 0xc0);
+	regmap_write(rt1308->regmap, 0xc030, 0x17);
+	regmap_write(rt1308->regmap, 0xc031, 0x81);
+	regmap_write(rt1308->regmap, 0xc032, 0x26);
+	regmap_write(rt1308->regmap, 0xc040, 0x80);
+	regmap_write(rt1308->regmap, 0xc041, 0x80);
+	regmap_write(rt1308->regmap, 0xc042, 0x06);
+	regmap_write(rt1308->regmap, 0xc052, 0x0a);
+	regmap_write(rt1308->regmap, 0xc080, 0x0a);
+	regmap_write(rt1308->regmap, 0xc060, 0x02);
+	regmap_write(rt1308->regmap, 0xc061, 0x75);
+	regmap_write(rt1308->regmap, 0xc062, 0x05);
+	regmap_write(rt1308->regmap, 0xc171, 0x07);
+	regmap_write(rt1308->regmap, 0xc173, 0x0d);
+	if (rt1308->hw_ver == RT1308_VER_C) {
+		regmap_write(rt1308->regmap, 0xc311, 0x7f);
+		regmap_write(rt1308->regmap, 0xc300, 0x09);
+	} else {
+		regmap_write(rt1308->regmap, 0xc311, 0x4f);
+		regmap_write(rt1308->regmap, 0xc300, 0x0b);
+	}
+	regmap_write(rt1308->regmap, 0xc900, 0x5a);
+	regmap_write(rt1308->regmap, 0xc1a0, 0x84);
+	regmap_write(rt1308->regmap, 0xc1a1, 0x01);
+	regmap_write(rt1308->regmap, 0xc360, 0x78);
+	regmap_write(rt1308->regmap, 0xc361, 0x87);
+	regmap_write(rt1308->regmap, 0xc0a1, 0x71);
+	regmap_write(rt1308->regmap, 0xc210, 0x00);
+	regmap_write(rt1308->regmap, 0xc070, 0x00);
+	regmap_write(rt1308->regmap, 0xc100, 0xd7);
+	regmap_write(rt1308->regmap, 0xc101, 0xd7);
+
+	if (rt1308->first_hw_init) {
+		regcache_cache_bypass(rt1308->regmap, false);
+		regcache_mark_dirty(rt1308->regmap);
+	} else
+		rt1308->first_hw_init = true;
+
+	/* Mark Slave initialization complete */
+	rt1308->hw_init = true;
+
+	pm_runtime_mark_last_busy(&slave->dev);
+	pm_runtime_put_autosuspend(&slave->dev);
+
+	dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
+
+	return ret;
+}
+
+static int rt1308_update_status(struct sdw_slave *slave,
+					enum sdw_slave_status status)
+{
+	struct  rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
+
+	/* Update the status */
+	rt1308->status = status;
+
+	if (status == SDW_SLAVE_UNATTACHED)
+		rt1308->hw_init = false;
+
+	/*
+	 * Perform initialization only if slave status is present and
+	 * hw_init flag is false
+	 */
+	if (rt1308->hw_init || rt1308->status != SDW_SLAVE_ATTACHED)
+		return 0;
+
+	/* perform I/O transfers required for Slave initialization */
+	return rt1308_io_init(&slave->dev, slave);
+}
+
+static int rt1308_bus_config(struct sdw_slave *slave,
+				struct sdw_bus_params *params)
+{
+	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
+	int ret;
+
+	memcpy(&rt1308->params, params, sizeof(*params));
+
+	ret = rt1308_clock_config(&slave->dev);
+	if (ret < 0)
+		dev_err(&slave->dev, "Invalid clk config");
+
+	return ret;
+}
+
+static int rt1308_interrupt_callback(struct sdw_slave *slave,
+					struct sdw_slave_intr_status *status)
+{
+	dev_dbg(&slave->dev,
+		"%s control_port_stat=%x", __func__, status->control_port);
+
+	return 0;
+}
+
+static int rt1308_classd_event(struct snd_soc_dapm_widget *w,
+	struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component =
+		snd_soc_dapm_to_component(w->dapm);
+	struct rt1308_sdw_priv *rt1308 =
+		snd_soc_component_get_drvdata(component);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		msleep(30);
+		snd_soc_component_update_bits(component,
+			RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
+			0x3,	0x3);
+		msleep(40);
+		rt1308_apply_calib_params(rt1308);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_component_update_bits(component,
+			RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
+			0x3, 0);
+		usleep_range(150000, 200000);
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static const char * const rt1308_rx_data_ch_select[] = {
+	"LR",
+	"LL",
+	"RL",
+	"RR",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1308_rx_data_ch_enum,
+	RT1308_SDW_OFFSET | (RT1308_DATA_PATH << 4), 0,
+	rt1308_rx_data_ch_select);
+
+static const struct snd_kcontrol_new rt1308_snd_controls[] = {
+
+	/* I2S Data Channel Selection */
+	SOC_ENUM("RX Channel Select", rt1308_rx_data_ch_enum),
+};
+
+static const struct snd_kcontrol_new rt1308_sto_dac_l =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch",
+		RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
+		RT1308_DVOL_MUTE_L_EN_SFT, 1, 1);
+
+static const struct snd_kcontrol_new rt1308_sto_dac_r =
+	SOC_DAPM_SINGLE_AUTODISABLE("Switch",
+		RT1308_SDW_OFFSET_BYTE3 | (RT1308_DAC_SET << 4),
+		RT1308_DVOL_MUTE_R_EN_SFT, 1, 1);
+
+static const struct snd_soc_dapm_widget rt1308_dapm_widgets[] = {
+	/* Audio Interface */
+	SND_SOC_DAPM_AIF_IN("AIF1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
+
+	/* Supply Widgets */
+	SND_SOC_DAPM_SUPPLY("MBIAS20U",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	7, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("ALDO",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	6, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DBG",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	5, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DACL",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	4, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("CLK25M",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	2, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("ADC_R",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	1, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("ADC_L",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	0, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("DAC Power",
+		RT1308_SDW_OFFSET | (RT1308_POWER << 4),	3, 0, NULL, 0),
+
+	SND_SOC_DAPM_SUPPLY("DLDO",
+		RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),	5, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("VREF",
+		RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),	4, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("MIXER_R",
+		RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),	2, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("MIXER_L",
+		RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),	1, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("MBIAS4U",
+		RT1308_SDW_OFFSET_BYTE1 | (RT1308_POWER << 4),	0, 0, NULL, 0),
+
+	SND_SOC_DAPM_SUPPLY("PLL2_LDO",
+		RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 4, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL2B",
+		RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 3, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL2F",
+		RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 2, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL2F2",
+		RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 1, 0, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("PLL2B2",
+		RT1308_SDW_OFFSET_BYTE2 | (RT1308_POWER << 4), 0, 0, NULL, 0),
+
+	/* Digital Interface */
+	SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_SWITCH("DAC L", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_l),
+	SND_SOC_DAPM_SWITCH("DAC R", SND_SOC_NOPM, 0, 0, &rt1308_sto_dac_r),
+
+	/* Output Lines */
+	SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
+		rt1308_classd_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+	SND_SOC_DAPM_OUTPUT("SPOL"),
+	SND_SOC_DAPM_OUTPUT("SPOR"),
+};
+
+static const struct snd_soc_dapm_route rt1308_dapm_routes[] = {
+
+	{ "DAC", NULL, "AIF1RX" },
+
+	{ "DAC", NULL, "MBIAS20U" },
+	{ "DAC", NULL, "ALDO" },
+	{ "DAC", NULL, "DBG" },
+	{ "DAC", NULL, "DACL" },
+	{ "DAC", NULL, "CLK25M" },
+	{ "DAC", NULL, "ADC_R" },
+	{ "DAC", NULL, "ADC_L" },
+	{ "DAC", NULL, "DLDO" },
+	{ "DAC", NULL, "VREF" },
+	{ "DAC", NULL, "MIXER_R" },
+	{ "DAC", NULL, "MIXER_L" },
+	{ "DAC", NULL, "MBIAS4U" },
+	{ "DAC", NULL, "PLL2_LDO" },
+	{ "DAC", NULL, "PLL2B" },
+	{ "DAC", NULL, "PLL2F" },
+	{ "DAC", NULL, "PLL2F2" },
+	{ "DAC", NULL, "PLL2B2" },
+
+	{ "DAC L", "Switch", "DAC" },
+	{ "DAC R", "Switch", "DAC" },
+	{ "DAC L", NULL, "DAC Power" },
+	{ "DAC R", NULL, "DAC Power" },
+
+	{ "CLASS D", NULL, "DAC L" },
+	{ "CLASS D", NULL, "DAC R" },
+	{ "SPOL", NULL, "CLASS D" },
+	{ "SPOR", NULL, "CLASS D" },
+};
+
+static int rt1308_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
+				int direction)
+{
+	struct sdw_stream_data *stream;
+
+	if (!sdw_stream)
+		return 0;
+
+	stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+	if (!stream)
+		return -ENOMEM;
+
+	stream->sdw_stream = sdw_stream;
+
+	/* Use tx_mask or rx_mask to configure stream tag and set dma_data */
+	if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+		dai->playback_dma_data = stream;
+	else
+		dai->capture_dma_data = stream;
+
+	return 0;
+}
+
+static void rt1308_sdw_shutdown(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct sdw_stream_data *stream;
+
+	stream = snd_soc_dai_get_dma_data(dai, substream);
+	snd_soc_dai_set_dma_data(dai, substream, NULL);
+	kfree(stream);
+}
+
+static int rt1308_sdw_set_tdm_slot(struct snd_soc_dai *dai,
+				   unsigned int tx_mask,
+				   unsigned int rx_mask,
+				   int slots, int slot_width)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1308_sdw_priv *rt1308 =
+		snd_soc_component_get_drvdata(component);
+
+	if (tx_mask)
+		return -EINVAL;
+
+	if (slots > 2)
+		return -EINVAL;
+
+	rt1308->rx_mask = rx_mask;
+	rt1308->slots = slots;
+	/* slot_width is not used since it's irrelevant for SoundWire */
+
+	return 0;
+}
+
+static int rt1308_sdw_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1308_sdw_priv *rt1308 =
+		snd_soc_component_get_drvdata(component);
+	struct sdw_stream_config stream_config = {0};
+	struct sdw_port_config port_config = {0};
+	struct sdw_stream_data *stream;
+	int retval;
+
+	dev_dbg(dai->dev, "%s %s", __func__, dai->name);
+	stream = snd_soc_dai_get_dma_data(dai, substream);
+
+	if (!stream)
+		return -EINVAL;
+
+	if (!rt1308->sdw_slave)
+		return -EINVAL;
+
+	/* SoundWire specific configuration */
+	snd_sdw_params_to_config(substream, params, &stream_config, &port_config);
+
+	/* port 1 for playback */
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		port_config.num = 1;
+	else
+		return -EINVAL;
+
+	if (rt1308->slots) {
+		stream_config.ch_count = rt1308->slots;
+		port_config.ch_mask = rt1308->rx_mask;
+	}
+
+	retval = sdw_stream_add_slave(rt1308->sdw_slave, &stream_config,
+				&port_config, 1, stream->sdw_stream);
+	if (retval) {
+		dev_err(dai->dev, "Unable to configure port\n");
+		return retval;
+	}
+
+	return retval;
+}
+
+static int rt1308_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
+				struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct rt1308_sdw_priv *rt1308 =
+		snd_soc_component_get_drvdata(component);
+	struct sdw_stream_data *stream =
+		snd_soc_dai_get_dma_data(dai, substream);
+
+	if (!rt1308->sdw_slave)
+		return -EINVAL;
+
+	sdw_stream_remove_slave(rt1308->sdw_slave, stream->sdw_stream);
+	return 0;
+}
+
+/*
+ * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
+ * port_prep are not defined for now
+ */
+static const struct sdw_slave_ops rt1308_slave_ops = {
+	.read_prop = rt1308_read_prop,
+	.interrupt_callback = rt1308_interrupt_callback,
+	.update_status = rt1308_update_status,
+	.bus_config = rt1308_bus_config,
+};
+
+static int rt1308_sdw_parse_dt(struct rt1308_sdw_priv *rt1308, struct device *dev)
+{
+	int ret = 0;
+
+	device_property_read_u32(dev, "realtek,bq-params-cnt", &rt1308->bq_params_cnt);
+	if (rt1308->bq_params_cnt) {
+		rt1308->bq_params = devm_kzalloc(dev, rt1308->bq_params_cnt, GFP_KERNEL);
+		if (!rt1308->bq_params) {
+			dev_err(dev, "Could not allocate bq_params memory\n");
+			ret = -ENOMEM;
+		} else {
+			ret = device_property_read_u8_array(dev, "realtek,bq-params", rt1308->bq_params, rt1308->bq_params_cnt);
+			if (ret < 0)
+				dev_err(dev, "Could not read list of realtek,bq-params\n");
+		}
+	}
+
+	dev_dbg(dev, "bq_params_cnt=%d\n", rt1308->bq_params_cnt);
+	return ret;
+}
+
+static int rt1308_sdw_component_probe(struct snd_soc_component *component)
+{
+	struct rt1308_sdw_priv *rt1308 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	rt1308->component = component;
+	rt1308_sdw_parse_dt(rt1308, &rt1308->sdw_slave->dev);
+
+	ret = pm_runtime_resume(component->dev);
+	if (ret < 0 && ret != -EACCES)
+		return ret;
+
+	/* apply BQ params */
+	rt1308_apply_bq_params(rt1308);
+
+	return 0;
+}
+
+static const struct snd_soc_component_driver soc_component_sdw_rt1308 = {
+	.probe = rt1308_sdw_component_probe,
+	.controls = rt1308_snd_controls,
+	.num_controls = ARRAY_SIZE(rt1308_snd_controls),
+	.dapm_widgets = rt1308_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt1308_dapm_widgets),
+	.dapm_routes = rt1308_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt1308_dapm_routes),
+	.endianness = 1,
+};
+
+static const struct snd_soc_dai_ops rt1308_aif_dai_ops = {
+	.hw_params = rt1308_sdw_hw_params,
+	.hw_free	= rt1308_sdw_pcm_hw_free,
+	.set_stream	= rt1308_set_sdw_stream,
+	.shutdown	= rt1308_sdw_shutdown,
+	.set_tdm_slot	= rt1308_sdw_set_tdm_slot,
+};
+
+#define RT1308_STEREO_RATES SNDRV_PCM_RATE_48000
+#define RT1308_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
+			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE | \
+			SNDRV_PCM_FMTBIT_S24_LE)
+
+static struct snd_soc_dai_driver rt1308_sdw_dai[] = {
+	{
+		.name = "rt1308-aif",
+		.playback = {
+			.stream_name = "DP1 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = RT1308_STEREO_RATES,
+			.formats = RT1308_FORMATS,
+		},
+		.ops = &rt1308_aif_dai_ops,
+	},
+};
+
+static int rt1308_sdw_init(struct device *dev, struct regmap *regmap,
+				struct sdw_slave *slave)
+{
+	struct rt1308_sdw_priv *rt1308;
+	int ret;
+
+	rt1308 = devm_kzalloc(dev, sizeof(*rt1308), GFP_KERNEL);
+	if (!rt1308)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, rt1308);
+	rt1308->sdw_slave = slave;
+	rt1308->regmap = regmap;
+
+	/*
+	 * Mark hw_init to false
+	 * HW init will be performed when device reports present
+	 */
+	rt1308->hw_init = false;
+	rt1308->first_hw_init = false;
+
+	ret =  devm_snd_soc_register_component(dev,
+				&soc_component_sdw_rt1308,
+				rt1308_sdw_dai,
+				ARRAY_SIZE(rt1308_sdw_dai));
+
+	dev_dbg(&slave->dev, "%s\n", __func__);
+
+	return ret;
+}
+
+static int rt1308_sdw_probe(struct sdw_slave *slave,
+				const struct sdw_device_id *id)
+{
+	struct regmap *regmap;
+
+	/* Regmap Initialization */
+	regmap = devm_regmap_init_sdw(slave, &rt1308_sdw_regmap);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	rt1308_sdw_init(&slave->dev, regmap, slave);
+
+	return 0;
+}
+
+static int rt1308_sdw_remove(struct sdw_slave *slave)
+{
+	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
+
+	if (rt1308->first_hw_init)
+		pm_runtime_disable(&slave->dev);
+
+	return 0;
+}
+
+static const struct sdw_device_id rt1308_id[] = {
+	SDW_SLAVE_ENTRY_EXT(0x025d, 0x1308, 0x2, 0, 0),
+	{},
+};
+MODULE_DEVICE_TABLE(sdw, rt1308_id);
+
+static int __maybe_unused rt1308_dev_suspend(struct device *dev)
+{
+	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+
+	if (!rt1308->hw_init)
+		return 0;
+
+	regcache_cache_only(rt1308->regmap, true);
+
+	return 0;
+}
+
+#define RT1308_PROBE_TIMEOUT 5000
+
+static int __maybe_unused rt1308_dev_resume(struct device *dev)
+{
+	struct sdw_slave *slave = dev_to_sdw_dev(dev);
+	struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
+	unsigned long time;
+
+	if (!rt1308->first_hw_init)
+		return 0;
+
+	if (!slave->unattach_request)
+		goto regmap_sync;
+
+	time = wait_for_completion_timeout(&slave->initialization_complete,
+				msecs_to_jiffies(RT1308_PROBE_TIMEOUT));
+	if (!time) {
+		dev_err(&slave->dev, "Initialization not complete, timed out\n");
+		sdw_show_ping_status(slave->bus, true);
+
+		return -ETIMEDOUT;
+	}
+
+regmap_sync:
+	slave->unattach_request = 0;
+	regcache_cache_only(rt1308->regmap, false);
+	regcache_sync_region(rt1308->regmap, 0xc000, 0xcfff);
+
+	return 0;
+}
+
+static const struct dev_pm_ops rt1308_pm = {
+	SET_SYSTEM_SLEEP_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume)
+	SET_RUNTIME_PM_OPS(rt1308_dev_suspend, rt1308_dev_resume, NULL)
+};
+
+static struct sdw_driver rt1308_sdw_driver = {
+	.driver = {
+		.name = "rt1308",
+		.owner = THIS_MODULE,
+		.pm = &rt1308_pm,
+	},
+	.probe = rt1308_sdw_probe,
+	.remove = rt1308_sdw_remove,
+	.ops = &rt1308_slave_ops,
+	.id_table = rt1308_id,
+};
+module_sdw_driver(rt1308_sdw_driver);
+
+MODULE_DESCRIPTION("ASoC RT1308 driver SDW");
+MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
+MODULE_LICENSE("GPL v2");