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, 726 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8804.c b/sound/soc/codecs/wm8804.c
new file mode 100644
index 000000000..0b234bae4
--- /dev/null
+++ b/sound/soc/codecs/wm8804.c
@@ -0,0 +1,726 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * wm8804.c  --  WM8804 S/PDIF transceiver driver
+ *
+ * Copyright 2010-11 Wolfson Microelectronics plc
+ *
+ * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/gpio/consumer.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include <sound/soc-dapm.h>
+
+#include "wm8804.h"
+
+#define WM8804_NUM_SUPPLIES 2
+static const char *wm8804_supply_names[WM8804_NUM_SUPPLIES] = {
+	"PVDD",
+	"DVDD"
+};
+
+static const struct reg_default wm8804_reg_defaults[] = {
+	{ 3,  0x21 },     /* R3  - PLL1 */
+	{ 4,  0xFD },     /* R4  - PLL2 */
+	{ 5,  0x36 },     /* R5  - PLL3 */
+	{ 6,  0x07 },     /* R6  - PLL4 */
+	{ 7,  0x16 },     /* R7  - PLL5 */
+	{ 8,  0x18 },     /* R8  - PLL6 */
+	{ 9,  0xFF },     /* R9  - SPDMODE */
+	{ 10, 0x00 },     /* R10 - INTMASK */
+	{ 18, 0x00 },     /* R18 - SPDTX1 */
+	{ 19, 0x00 },     /* R19 - SPDTX2 */
+	{ 20, 0x00 },     /* R20 - SPDTX3 */
+	{ 21, 0x71 },     /* R21 - SPDTX4 */
+	{ 22, 0x0B },     /* R22 - SPDTX5 */
+	{ 23, 0x70 },     /* R23 - GPO0 */
+	{ 24, 0x57 },     /* R24 - GPO1 */
+	{ 26, 0x42 },     /* R26 - GPO2 */
+	{ 27, 0x06 },     /* R27 - AIFTX */
+	{ 28, 0x06 },     /* R28 - AIFRX */
+	{ 29, 0x80 },     /* R29 - SPDRX1 */
+	{ 30, 0x07 },     /* R30 - PWRDN */
+};
+
+struct wm8804_priv {
+	struct device *dev;
+	struct regmap *regmap;
+	struct regulator_bulk_data supplies[WM8804_NUM_SUPPLIES];
+	struct notifier_block disable_nb[WM8804_NUM_SUPPLIES];
+	int mclk_div;
+
+	struct gpio_desc *reset;
+
+	int aif_pwr;
+};
+
+static int txsrc_put(struct snd_kcontrol *kcontrol,
+		     struct snd_ctl_elem_value *ucontrol);
+
+static int wm8804_aif_event(struct snd_soc_dapm_widget *w,
+			    struct snd_kcontrol *kcontrol, int event);
+
+/*
+ * We can't use the same notifier block for more than one supply and
+ * there's no way I can see to get from a callback to the caller
+ * except container_of().
+ */
+#define WM8804_REGULATOR_EVENT(n) \
+static int wm8804_regulator_event_##n(struct notifier_block *nb, \
+				      unsigned long event, void *data)    \
+{ \
+	struct wm8804_priv *wm8804 = container_of(nb, struct wm8804_priv, \
+						  disable_nb[n]); \
+	if (event & REGULATOR_EVENT_DISABLE) { \
+		regcache_mark_dirty(wm8804->regmap);	\
+	} \
+	return 0; \
+}
+
+WM8804_REGULATOR_EVENT(0)
+WM8804_REGULATOR_EVENT(1)
+
+static const char *txsrc_text[] = { "S/PDIF RX", "AIF" };
+static SOC_ENUM_SINGLE_DECL(txsrc, WM8804_SPDTX4, 6, txsrc_text);
+
+static const struct snd_kcontrol_new wm8804_tx_source_mux[] = {
+	SOC_DAPM_ENUM_EXT("Input Source", txsrc,
+			  snd_soc_dapm_get_enum_double, txsrc_put),
+};
+
+static const struct snd_soc_dapm_widget wm8804_dapm_widgets[] = {
+SND_SOC_DAPM_OUTPUT("SPDIF Out"),
+SND_SOC_DAPM_INPUT("SPDIF In"),
+
+SND_SOC_DAPM_PGA("SPDIFTX", WM8804_PWRDN, 2, 1, NULL, 0),
+SND_SOC_DAPM_PGA("SPDIFRX", WM8804_PWRDN, 1, 1, NULL, 0),
+
+SND_SOC_DAPM_MUX("Tx Source", SND_SOC_NOPM, 6, 0, wm8804_tx_source_mux),
+
+SND_SOC_DAPM_AIF_OUT_E("AIFTX", NULL, 0, SND_SOC_NOPM, 0, 0, wm8804_aif_event,
+		       SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+SND_SOC_DAPM_AIF_IN_E("AIFRX", NULL, 0, SND_SOC_NOPM, 0, 0, wm8804_aif_event,
+		      SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route wm8804_dapm_routes[] = {
+	{ "AIFRX", NULL, "Playback" },
+	{ "Tx Source", "AIF", "AIFRX" },
+
+	{ "SPDIFRX", NULL, "SPDIF In" },
+	{ "Tx Source", "S/PDIF RX", "SPDIFRX" },
+
+	{ "SPDIFTX", NULL, "Tx Source" },
+	{ "SPDIF Out", NULL, "SPDIFTX" },
+
+	{ "AIFTX", NULL, "SPDIFRX" },
+	{ "Capture", NULL, "AIFTX" },
+};
+
+static int wm8804_aif_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 wm8804_priv *wm8804 = snd_soc_component_get_drvdata(component);
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		/* power up the aif */
+		if (!wm8804->aif_pwr)
+			snd_soc_component_update_bits(component, WM8804_PWRDN, 0x10, 0x0);
+		wm8804->aif_pwr++;
+		break;
+	case SND_SOC_DAPM_POST_PMD:
+		/* power down only both paths are disabled */
+		wm8804->aif_pwr--;
+		if (!wm8804->aif_pwr)
+			snd_soc_component_update_bits(component, WM8804_PWRDN, 0x10, 0x10);
+		break;
+	}
+
+	return 0;
+}
+
+static int txsrc_put(struct snd_kcontrol *kcontrol,
+		     struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_component *component = snd_soc_dapm_kcontrol_component(kcontrol);
+	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
+	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+	unsigned int val = ucontrol->value.enumerated.item[0] << e->shift_l;
+	unsigned int mask = 1 << e->shift_l;
+	unsigned int txpwr;
+
+	if (val != 0 && val != mask)
+		return -EINVAL;
+
+	snd_soc_dapm_mutex_lock(dapm);
+
+	if (snd_soc_component_test_bits(component, e->reg, mask, val)) {
+		/* save the current power state of the transmitter */
+		txpwr = snd_soc_component_read(component, WM8804_PWRDN) & 0x4;
+
+		/* power down the transmitter */
+		snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, 0x4);
+
+		/* set the tx source */
+		snd_soc_component_update_bits(component, e->reg, mask, val);
+
+		/* restore the transmitter's configuration */
+		snd_soc_component_update_bits(component, WM8804_PWRDN, 0x4, txpwr);
+	}
+
+	snd_soc_dapm_mutex_unlock(dapm);
+
+	return 0;
+}
+
+static bool wm8804_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case WM8804_RST_DEVID1:
+	case WM8804_DEVID2:
+	case WM8804_DEVREV:
+	case WM8804_INTSTAT:
+	case WM8804_SPDSTAT:
+	case WM8804_RXCHAN1:
+	case WM8804_RXCHAN2:
+	case WM8804_RXCHAN3:
+	case WM8804_RXCHAN4:
+	case WM8804_RXCHAN5:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int wm8804_soft_reset(struct wm8804_priv *wm8804)
+{
+	return regmap_write(wm8804->regmap, WM8804_RST_DEVID1, 0x0);
+}
+
+static int wm8804_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+	struct snd_soc_component *component;
+	u16 format, master, bcp, lrp;
+
+	component = dai->component;
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		format = 0x2;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		format = 0x0;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		format = 0x1;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+	case SND_SOC_DAIFMT_DSP_B:
+		format = 0x3;
+		break;
+	default:
+		dev_err(dai->dev, "Unknown dai format\n");
+		return -EINVAL;
+	}
+
+	/* set data format */
+	snd_soc_component_update_bits(component, WM8804_AIFTX, 0x3, format);
+	snd_soc_component_update_bits(component, WM8804_AIFRX, 0x3, format);
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		master = 1;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		master = 0;
+		break;
+	default:
+		dev_err(dai->dev, "Unknown master/slave configuration\n");
+		return -EINVAL;
+	}
+
+	/* set master/slave mode */
+	snd_soc_component_update_bits(component, WM8804_AIFRX, 0x40, master << 6);
+
+	bcp = lrp = 0;
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+	case SND_SOC_DAIFMT_IB_IF:
+		bcp = lrp = 1;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		bcp = 1;
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		lrp = 1;
+		break;
+	default:
+		dev_err(dai->dev, "Unknown polarity configuration\n");
+		return -EINVAL;
+	}
+
+	/* set frame inversion */
+	snd_soc_component_update_bits(component, WM8804_AIFTX, 0x10 | 0x20,
+			    (bcp << 4) | (lrp << 5));
+	snd_soc_component_update_bits(component, WM8804_AIFRX, 0x10 | 0x20,
+			    (bcp << 4) | (lrp << 5));
+	return 0;
+}
+
+static int wm8804_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component;
+	u16 blen;
+
+	component = dai->component;
+
+	switch (params_width(params)) {
+	case 16:
+		blen = 0x0;
+		break;
+	case 20:
+		blen = 0x1;
+		break;
+	case 24:
+		blen = 0x2;
+		break;
+	default:
+		dev_err(dai->dev, "Unsupported word length: %u\n",
+			params_width(params));
+		return -EINVAL;
+	}
+
+	/* set word length */
+	snd_soc_component_update_bits(component, WM8804_AIFTX, 0xc, blen << 2);
+	snd_soc_component_update_bits(component, WM8804_AIFRX, 0xc, blen << 2);
+
+	return 0;
+}
+
+struct pll_div {
+	u32 prescale:1;
+	u32 mclkdiv:1;
+	u32 freqmode:2;
+	u32 n:4;
+	u32 k:22;
+};
+
+/* PLL rate to output rate divisions */
+static struct {
+	unsigned int div;
+	unsigned int freqmode;
+	unsigned int mclkdiv;
+} post_table[] = {
+	{  2,  0, 0 },
+	{  4,  0, 1 },
+	{  4,  1, 0 },
+	{  8,  1, 1 },
+	{  8,  2, 0 },
+	{ 16,  2, 1 },
+	{ 12,  3, 0 },
+	{ 24,  3, 1 }
+};
+
+#define FIXED_PLL_SIZE ((1ULL << 22) * 10)
+static int pll_factors(struct pll_div *pll_div, unsigned int target,
+		       unsigned int source, unsigned int mclk_div)
+{
+	u64 Kpart;
+	unsigned long int K, Ndiv, Nmod, tmp;
+	int i;
+
+	/*
+	 * Scale the output frequency up; the PLL should run in the
+	 * region of 90-100MHz.
+	 */
+	for (i = 0; i < ARRAY_SIZE(post_table); i++) {
+		tmp = target * post_table[i].div;
+		if ((tmp >= 90000000 && tmp <= 100000000) &&
+		    (mclk_div == post_table[i].mclkdiv)) {
+			pll_div->freqmode = post_table[i].freqmode;
+			pll_div->mclkdiv = post_table[i].mclkdiv;
+			target *= post_table[i].div;
+			break;
+		}
+	}
+
+	if (i == ARRAY_SIZE(post_table)) {
+		pr_err("%s: Unable to scale output frequency: %uHz\n",
+		       __func__, target);
+		return -EINVAL;
+	}
+
+	pll_div->prescale = 0;
+	Ndiv = target / source;
+	if (Ndiv < 5) {
+		source >>= 1;
+		pll_div->prescale = 1;
+		Ndiv = target / source;
+	}
+
+	if (Ndiv < 5 || Ndiv > 13) {
+		pr_err("%s: WM8804 N value is not within the recommended range: %lu\n",
+		       __func__, Ndiv);
+		return -EINVAL;
+	}
+	pll_div->n = Ndiv;
+
+	Nmod = target % source;
+	Kpart = FIXED_PLL_SIZE * (u64)Nmod;
+
+	do_div(Kpart, source);
+
+	K = Kpart & 0xffffffff;
+	if ((K % 10) >= 5)
+		K += 5;
+	K /= 10;
+	pll_div->k = K;
+
+	return 0;
+}
+
+static int wm8804_set_pll(struct snd_soc_dai *dai, int pll_id,
+			  int source, unsigned int freq_in,
+			  unsigned int freq_out)
+{
+	struct snd_soc_component *component = dai->component;
+	struct wm8804_priv *wm8804 = snd_soc_component_get_drvdata(component);
+	bool change;
+
+	if (!freq_in || !freq_out) {
+		/* disable the PLL */
+		regmap_update_bits_check(wm8804->regmap, WM8804_PWRDN,
+					 0x1, 0x1, &change);
+		if (change)
+			pm_runtime_put(wm8804->dev);
+	} else {
+		int ret;
+		struct pll_div pll_div;
+
+		ret = pll_factors(&pll_div, freq_out, freq_in,
+				  wm8804->mclk_div);
+		if (ret)
+			return ret;
+
+		/* power down the PLL before reprogramming it */
+		regmap_update_bits_check(wm8804->regmap, WM8804_PWRDN,
+					 0x1, 0x1, &change);
+		if (!change)
+			pm_runtime_get_sync(wm8804->dev);
+
+		/* set PLLN and PRESCALE */
+		snd_soc_component_update_bits(component, WM8804_PLL4, 0xf | 0x10,
+				    pll_div.n | (pll_div.prescale << 4));
+		/* set mclkdiv and freqmode */
+		snd_soc_component_update_bits(component, WM8804_PLL5, 0x3 | 0x8,
+				    pll_div.freqmode | (pll_div.mclkdiv << 3));
+		/* set PLLK */
+		snd_soc_component_write(component, WM8804_PLL1, pll_div.k & 0xff);
+		snd_soc_component_write(component, WM8804_PLL2, (pll_div.k >> 8) & 0xff);
+		snd_soc_component_write(component, WM8804_PLL3, pll_div.k >> 16);
+
+		/* power up the PLL */
+		snd_soc_component_update_bits(component, WM8804_PWRDN, 0x1, 0);
+	}
+
+	return 0;
+}
+
+static int wm8804_set_sysclk(struct snd_soc_dai *dai,
+			     int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_component *component;
+
+	component = dai->component;
+
+	switch (clk_id) {
+	case WM8804_TX_CLKSRC_MCLK:
+		if ((freq >= 10000000 && freq <= 14400000)
+				|| (freq >= 16280000 && freq <= 27000000))
+			snd_soc_component_update_bits(component, WM8804_PLL6, 0x80, 0x80);
+		else {
+			dev_err(dai->dev, "OSCCLOCK is not within the "
+				"recommended range: %uHz\n", freq);
+			return -EINVAL;
+		}
+		break;
+	case WM8804_TX_CLKSRC_PLL:
+		snd_soc_component_update_bits(component, WM8804_PLL6, 0x80, 0);
+		break;
+	case WM8804_CLKOUT_SRC_CLK1:
+		snd_soc_component_update_bits(component, WM8804_PLL6, 0x8, 0);
+		break;
+	case WM8804_CLKOUT_SRC_OSCCLK:
+		snd_soc_component_update_bits(component, WM8804_PLL6, 0x8, 0x8);
+		break;
+	default:
+		dev_err(dai->dev, "Unknown clock source: %d\n", clk_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int wm8804_set_clkdiv(struct snd_soc_dai *dai,
+			     int div_id, int div)
+{
+	struct snd_soc_component *component;
+	struct wm8804_priv *wm8804;
+
+	component = dai->component;
+	switch (div_id) {
+	case WM8804_CLKOUT_DIV:
+		snd_soc_component_update_bits(component, WM8804_PLL5, 0x30,
+				    (div & 0x3) << 4);
+		break;
+	case WM8804_MCLK_DIV:
+		wm8804 = snd_soc_component_get_drvdata(component);
+		wm8804->mclk_div = div;
+		break;
+	default:
+		dev_err(dai->dev, "Unknown clock divider: %d\n", div_id);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct snd_soc_dai_ops wm8804_dai_ops = {
+	.hw_params = wm8804_hw_params,
+	.set_fmt = wm8804_set_fmt,
+	.set_sysclk = wm8804_set_sysclk,
+	.set_clkdiv = wm8804_set_clkdiv,
+	.set_pll = wm8804_set_pll
+};
+
+#define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+			SNDRV_PCM_FMTBIT_S24_LE)
+
+#define WM8804_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+		      SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
+		      SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | \
+		      SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000)
+
+static struct snd_soc_dai_driver wm8804_dai = {
+	.name = "wm8804-spdif",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = WM8804_RATES,
+		.formats = WM8804_FORMATS,
+	},
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = WM8804_RATES,
+		.formats = WM8804_FORMATS,
+	},
+	.ops = &wm8804_dai_ops,
+	.symmetric_rate = 1
+};
+
+static const struct snd_soc_component_driver soc_component_dev_wm8804 = {
+	.dapm_widgets		= wm8804_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(wm8804_dapm_widgets),
+	.dapm_routes		= wm8804_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(wm8804_dapm_routes),
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+};
+
+const struct regmap_config wm8804_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = WM8804_MAX_REGISTER,
+	.volatile_reg = wm8804_volatile,
+
+	.cache_type = REGCACHE_RBTREE,
+	.reg_defaults = wm8804_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(wm8804_reg_defaults),
+};
+EXPORT_SYMBOL_GPL(wm8804_regmap_config);
+
+int wm8804_probe(struct device *dev, struct regmap *regmap)
+{
+	struct wm8804_priv *wm8804;
+	unsigned int id1, id2;
+	int i, ret;
+
+	wm8804 = devm_kzalloc(dev, sizeof(*wm8804), GFP_KERNEL);
+	if (!wm8804)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, wm8804);
+
+	wm8804->dev = dev;
+	wm8804->regmap = regmap;
+
+	wm8804->reset = devm_gpiod_get_optional(dev, "wlf,reset",
+						GPIOD_OUT_LOW);
+	if (IS_ERR(wm8804->reset)) {
+		ret = PTR_ERR(wm8804->reset);
+		dev_err(dev, "Failed to get reset line: %d\n", ret);
+		return ret;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++)
+		wm8804->supplies[i].supply = wm8804_supply_names[i];
+
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(wm8804->supplies),
+				      wm8804->supplies);
+	if (ret) {
+		dev_err(dev, "Failed to request supplies: %d\n", ret);
+		return ret;
+	}
+
+	wm8804->disable_nb[0].notifier_call = wm8804_regulator_event_0;
+	wm8804->disable_nb[1].notifier_call = wm8804_regulator_event_1;
+
+	/* This should really be moved into the regulator core */
+	for (i = 0; i < ARRAY_SIZE(wm8804->supplies); i++) {
+		struct regulator *regulator = wm8804->supplies[i].consumer;
+
+		ret = devm_regulator_register_notifier(regulator,
+						       &wm8804->disable_nb[i]);
+		if (ret != 0) {
+			dev_err(dev,
+				"Failed to register regulator notifier: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies),
+				    wm8804->supplies);
+	if (ret) {
+		dev_err(dev, "Failed to enable supplies: %d\n", ret);
+		return ret;
+	}
+
+	gpiod_set_value_cansleep(wm8804->reset, 1);
+
+	ret = regmap_read(regmap, WM8804_RST_DEVID1, &id1);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read device ID: %d\n", ret);
+		goto err_reg_enable;
+	}
+
+	ret = regmap_read(regmap, WM8804_DEVID2, &id2);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read device ID: %d\n", ret);
+		goto err_reg_enable;
+	}
+
+	id2 = (id2 << 8) | id1;
+
+	if (id2 != 0x8805) {
+		dev_err(dev, "Invalid device ID: %#x\n", id2);
+		ret = -EINVAL;
+		goto err_reg_enable;
+	}
+
+	ret = regmap_read(regmap, WM8804_DEVREV, &id1);
+	if (ret < 0) {
+		dev_err(dev, "Failed to read device revision: %d\n",
+			ret);
+		goto err_reg_enable;
+	}
+	dev_info(dev, "revision %c\n", id1 + 'A');
+
+	if (!wm8804->reset) {
+		ret = wm8804_soft_reset(wm8804);
+		if (ret < 0) {
+			dev_err(dev, "Failed to issue reset: %d\n", ret);
+			goto err_reg_enable;
+		}
+	}
+
+	ret = devm_snd_soc_register_component(dev, &soc_component_dev_wm8804,
+				     &wm8804_dai, 1);
+	if (ret < 0) {
+		dev_err(dev, "Failed to register CODEC: %d\n", ret);
+		goto err_reg_enable;
+	}
+
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_idle(dev);
+
+	return 0;
+
+err_reg_enable:
+	regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies), wm8804->supplies);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(wm8804_probe);
+
+void wm8804_remove(struct device *dev)
+{
+	pm_runtime_disable(dev);
+}
+EXPORT_SYMBOL_GPL(wm8804_remove);
+
+#if IS_ENABLED(CONFIG_PM)
+static int wm8804_runtime_resume(struct device *dev)
+{
+	struct wm8804_priv *wm8804 = dev_get_drvdata(dev);
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(wm8804->supplies),
+				    wm8804->supplies);
+	if (ret) {
+		dev_err(wm8804->dev, "Failed to enable supplies: %d\n", ret);
+		return ret;
+	}
+
+	regcache_sync(wm8804->regmap);
+
+	/* Power up OSCCLK */
+	regmap_update_bits(wm8804->regmap, WM8804_PWRDN, 0x8, 0x0);
+
+	return 0;
+}
+
+static int wm8804_runtime_suspend(struct device *dev)
+{
+	struct wm8804_priv *wm8804 = dev_get_drvdata(dev);
+
+	/* Power down OSCCLK */
+	regmap_update_bits(wm8804->regmap, WM8804_PWRDN, 0x8, 0x8);
+
+	regulator_bulk_disable(ARRAY_SIZE(wm8804->supplies),
+			       wm8804->supplies);
+
+	return 0;
+}
+#endif
+
+const struct dev_pm_ops wm8804_pm = {
+	SET_RUNTIME_PM_OPS(wm8804_runtime_suspend, wm8804_runtime_resume, NULL)
+};
+EXPORT_SYMBOL_GPL(wm8804_pm);
+
+MODULE_DESCRIPTION("ASoC WM8804 driver");
+MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");