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, 777 insertions, 0 deletions

diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c
new file mode 100644
index 000000000..afdf7d61e
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood-i2s.c
@@ -0,0 +1,777 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * kirkwood-i2s.c
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/mbus.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <linux/platform_data/asoc-kirkwood.h>
+#include <linux/of.h>
+
+#include "kirkwood.h"
+
+#define KIRKWOOD_I2S_FORMATS \
+	(SNDRV_PCM_FMTBIT_S16_LE | \
+	 SNDRV_PCM_FMTBIT_S24_LE | \
+	 SNDRV_PCM_FMTBIT_S32_LE)
+
+#define KIRKWOOD_SPDIF_FORMATS \
+	(SNDRV_PCM_FMTBIT_S16_LE | \
+	 SNDRV_PCM_FMTBIT_S24_LE)
+
+/* These registers are relative to the second register region -
+ * audio pll configuration.
+ */
+#define A38X_PLL_CONF_REG0			0x0
+#define     A38X_PLL_FB_CLK_DIV_OFFSET		10
+#define     A38X_PLL_FB_CLK_DIV_MASK		0x7fc00
+#define A38X_PLL_CONF_REG1			0x4
+#define     A38X_PLL_FREQ_OFFSET_MASK		0xffff
+#define     A38X_PLL_FREQ_OFFSET_VALID		BIT(16)
+#define     A38X_PLL_SW_RESET			BIT(31)
+#define A38X_PLL_CONF_REG2			0x8
+#define     A38X_PLL_AUDIO_POSTDIV_MASK		0x7f
+
+/* Bit below belongs to SoC control register corresponding to the third
+ * register region.
+ */
+#define A38X_SPDIF_MODE_ENABLE			BIT(27)
+
+static int armada_38x_i2s_init_quirk(struct platform_device *pdev,
+				     struct kirkwood_dma_data *priv,
+				     struct snd_soc_dai_driver *dai_drv)
+{
+	struct device_node *np = pdev->dev.of_node;
+	u32 reg_val;
+	int i;
+
+	priv->pll_config = devm_platform_ioremap_resource_byname(pdev, "pll_regs");
+	if (IS_ERR(priv->pll_config))
+		return -ENOMEM;
+
+	priv->soc_control = devm_platform_ioremap_resource_byname(pdev, "soc_ctrl");
+	if (IS_ERR(priv->soc_control))
+		return -ENOMEM;
+
+	/* Select one of exceptive modes: I2S or S/PDIF */
+	reg_val = readl(priv->soc_control);
+	if (of_property_read_bool(np, "spdif-mode")) {
+		reg_val |= A38X_SPDIF_MODE_ENABLE;
+		dev_info(&pdev->dev, "using S/PDIF mode\n");
+	} else {
+		reg_val &= ~A38X_SPDIF_MODE_ENABLE;
+		dev_info(&pdev->dev, "using I2S mode\n");
+	}
+	writel(reg_val, priv->soc_control);
+
+	/* Update available rates of mclk's fs */
+	for (i = 0; i < 2; i++) {
+		dai_drv[i].playback.rates |= SNDRV_PCM_RATE_192000;
+		dai_drv[i].capture.rates |= SNDRV_PCM_RATE_192000;
+	}
+
+	return 0;
+}
+
+static inline void armada_38x_set_pll(void __iomem *base, unsigned long rate)
+{
+	u32 reg_val;
+	u16 freq_offset = 0x22b0;
+	u8 audio_postdiv, fb_clk_div = 0x1d;
+
+	/* Set frequency offset value to not valid and enable PLL reset */
+	reg_val = readl(base + A38X_PLL_CONF_REG1);
+	reg_val &= ~A38X_PLL_FREQ_OFFSET_VALID;
+	reg_val &= ~A38X_PLL_SW_RESET;
+	writel(reg_val, base + A38X_PLL_CONF_REG1);
+
+	udelay(1);
+
+	/* Update PLL parameters */
+	switch (rate) {
+	default:
+	case 44100:
+		freq_offset = 0x735;
+		fb_clk_div = 0x1b;
+		audio_postdiv = 0xc;
+		break;
+	case 48000:
+		audio_postdiv = 0xc;
+		break;
+	case 96000:
+		audio_postdiv = 0x6;
+		break;
+	case 192000:
+		audio_postdiv = 0x3;
+		break;
+	}
+
+	reg_val = readl(base + A38X_PLL_CONF_REG0);
+	reg_val &= ~A38X_PLL_FB_CLK_DIV_MASK;
+	reg_val |= (fb_clk_div << A38X_PLL_FB_CLK_DIV_OFFSET);
+	writel(reg_val, base + A38X_PLL_CONF_REG0);
+
+	reg_val = readl(base + A38X_PLL_CONF_REG2);
+	reg_val &= ~A38X_PLL_AUDIO_POSTDIV_MASK;
+	reg_val |= audio_postdiv;
+	writel(reg_val, base + A38X_PLL_CONF_REG2);
+
+	reg_val = readl(base + A38X_PLL_CONF_REG1);
+	reg_val &= ~A38X_PLL_FREQ_OFFSET_MASK;
+	reg_val |= freq_offset;
+	writel(reg_val, base + A38X_PLL_CONF_REG1);
+
+	udelay(1);
+
+	/* Disable reset */
+	reg_val |= A38X_PLL_SW_RESET;
+	writel(reg_val, base + A38X_PLL_CONF_REG1);
+
+	/* Wait 50us for PLL to lock */
+	udelay(50);
+
+	/* Restore frequency offset value validity */
+	reg_val |= A38X_PLL_FREQ_OFFSET_VALID;
+	writel(reg_val, base + A38X_PLL_CONF_REG1);
+}
+
+static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
+		unsigned int fmt)
+{
+	struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai);
+	unsigned long mask;
+	unsigned long value;
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_RIGHT_J:
+		mask = KIRKWOOD_I2S_CTL_RJ;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		mask = KIRKWOOD_I2S_CTL_LJ;
+		break;
+	case SND_SOC_DAIFMT_I2S:
+		mask = KIRKWOOD_I2S_CTL_I2S;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * Set same format for playback and record
+	 * This avoids some troubles.
+	 */
+	value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL);
+	value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
+	value |= mask;
+	writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL);
+
+	value = readl(priv->io+KIRKWOOD_I2S_RECCTL);
+	value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
+	value |= mask;
+	writel(value, priv->io+KIRKWOOD_I2S_RECCTL);
+
+	return 0;
+}
+
+static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
+{
+	unsigned long value;
+
+	value = KIRKWOOD_DCO_CTL_OFFSET_0;
+	switch (rate) {
+	default:
+	case 44100:
+		value |= KIRKWOOD_DCO_CTL_FREQ_11;
+		break;
+	case 48000:
+		value |= KIRKWOOD_DCO_CTL_FREQ_12;
+		break;
+	case 96000:
+		value |= KIRKWOOD_DCO_CTL_FREQ_24;
+		break;
+	}
+	writel(value, io + KIRKWOOD_DCO_CTL);
+
+	/* wait for dco locked */
+	do {
+		cpu_relax();
+		value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
+		value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK;
+	} while (value == 0);
+}
+
+static void kirkwood_set_rate(struct snd_soc_dai *dai,
+	struct kirkwood_dma_data *priv, unsigned long rate)
+{
+	uint32_t clks_ctrl;
+
+	if (IS_ERR(priv->extclk)) {
+		/* use internal dco for the supported rates
+		 * defined in kirkwood_i2s_dai */
+		dev_dbg(dai->dev, "%s: dco set rate = %lu\n",
+			__func__, rate);
+		if (priv->pll_config)
+			armada_38x_set_pll(priv->pll_config, rate);
+		else
+			kirkwood_set_dco(priv->io, rate);
+
+		clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO;
+	} else {
+		/* use the external clock for the other rates
+		 * defined in kirkwood_i2s_dai_extclk */
+		dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n",
+			__func__, rate, 256 * rate);
+		clk_set_rate(priv->extclk, 256 * rate);
+
+		clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK;
+	}
+	writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL);
+}
+
+static int kirkwood_i2s_startup(struct snd_pcm_substream *substream,
+		struct snd_soc_dai *dai)
+{
+	struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+
+	snd_soc_dai_set_dma_data(dai, substream, priv);
+	return 0;
+}
+
+static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
+				 struct snd_pcm_hw_params *params,
+				 struct snd_soc_dai *dai)
+{
+	struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+	uint32_t ctl_play, ctl_rec;
+	unsigned int i2s_reg;
+	unsigned long i2s_value;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		i2s_reg = KIRKWOOD_I2S_PLAYCTL;
+	} else {
+		i2s_reg = KIRKWOOD_I2S_RECCTL;
+	}
+
+	kirkwood_set_rate(dai, priv, params_rate(params));
+
+	i2s_value = readl(priv->io+i2s_reg);
+	i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
+
+	/*
+	 * Size settings in play/rec i2s control regs and play/rec control
+	 * regs must be the same.
+	 */
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16;
+		ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C |
+			   KIRKWOOD_PLAYCTL_I2S_EN |
+			   KIRKWOOD_PLAYCTL_SPDIF_EN;
+		ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C |
+			  KIRKWOOD_RECCTL_I2S_EN |
+			  KIRKWOOD_RECCTL_SPDIF_EN;
+		break;
+	/*
+	 * doesn't work... S20_3LE != kirkwood 20bit format ?
+	 *
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
+		ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 |
+			   KIRKWOOD_PLAYCTL_I2S_EN;
+		ctl_rec = KIRKWOOD_RECCTL_SIZE_20 |
+			  KIRKWOOD_RECCTL_I2S_EN;
+		break;
+	*/
+	case SNDRV_PCM_FORMAT_S24_LE:
+		i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
+		ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 |
+			   KIRKWOOD_PLAYCTL_I2S_EN |
+			   KIRKWOOD_PLAYCTL_SPDIF_EN;
+		ctl_rec = KIRKWOOD_RECCTL_SIZE_24 |
+			  KIRKWOOD_RECCTL_I2S_EN |
+			  KIRKWOOD_RECCTL_SPDIF_EN;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
+		ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 |
+			   KIRKWOOD_PLAYCTL_I2S_EN;
+		ctl_rec = KIRKWOOD_RECCTL_SIZE_32 |
+			  KIRKWOOD_RECCTL_I2S_EN;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (params_channels(params) == 1)
+			ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH;
+		else
+			ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF;
+
+		priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK |
+				    KIRKWOOD_PLAYCTL_ENABLE_MASK |
+				    KIRKWOOD_PLAYCTL_SIZE_MASK);
+		priv->ctl_play |= ctl_play;
+	} else {
+		priv->ctl_rec &= ~(KIRKWOOD_RECCTL_ENABLE_MASK |
+				   KIRKWOOD_RECCTL_SIZE_MASK);
+		priv->ctl_rec |= ctl_rec;
+	}
+
+	writel(i2s_value, priv->io+i2s_reg);
+
+	return 0;
+}
+
+static unsigned kirkwood_i2s_play_mute(unsigned ctl)
+{
+	if (!(ctl & KIRKWOOD_PLAYCTL_I2S_EN))
+		ctl |= KIRKWOOD_PLAYCTL_I2S_MUTE;
+	if (!(ctl & KIRKWOOD_PLAYCTL_SPDIF_EN))
+		ctl |= KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+	return ctl;
+}
+
+static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
+				int cmd, struct snd_soc_dai *dai)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+	uint32_t ctl, value;
+
+	ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+	if ((ctl & KIRKWOOD_PLAYCTL_ENABLE_MASK) == 0) {
+		unsigned timeout = 5000;
+		/*
+		 * The Armada510 spec says that if we enter pause mode, the
+		 * busy bit must be read back as clear _twice_.  Make sure
+		 * we respect that otherwise we get DMA underruns.
+		 */
+		do {
+			value = ctl;
+			ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+			if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY))
+				break;
+			udelay(1);
+		} while (timeout--);
+
+		if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)
+			dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n",
+				   ctl);
+	}
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		/* configure */
+		ctl = priv->ctl_play;
+		if (dai->id == 0)
+			ctl &= ~KIRKWOOD_PLAYCTL_SPDIF_EN;	/* i2s */
+		else
+			ctl &= ~KIRKWOOD_PLAYCTL_I2S_EN;	/* spdif */
+		ctl = kirkwood_i2s_play_mute(ctl);
+		value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+		writel(value, priv->io + KIRKWOOD_PLAYCTL);
+
+		/* enable interrupts */
+		if (!runtime->no_period_wakeup) {
+			value = readl(priv->io + KIRKWOOD_INT_MASK);
+			value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
+			writel(value, priv->io + KIRKWOOD_INT_MASK);
+		}
+
+		/* enable playback */
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+		/* stop audio, disable interrupts */
+		ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+				KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+
+		value = readl(priv->io + KIRKWOOD_INT_MASK);
+		value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
+		writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+		/* disable all playbacks */
+		ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+		break;
+
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+				KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+		break;
+
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+				KIRKWOOD_PLAYCTL_SPDIF_MUTE);
+		ctl = kirkwood_i2s_play_mute(ctl);
+		writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
+				int cmd, struct snd_soc_dai *dai)
+{
+	struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+	uint32_t ctl, value;
+
+	value = readl(priv->io + KIRKWOOD_RECCTL);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		/* configure */
+		ctl = priv->ctl_rec;
+		if (dai->id == 0)
+			ctl &= ~KIRKWOOD_RECCTL_SPDIF_EN;	/* i2s */
+		else
+			ctl &= ~KIRKWOOD_RECCTL_I2S_EN;		/* spdif */
+
+		value = ctl & ~KIRKWOOD_RECCTL_ENABLE_MASK;
+		writel(value, priv->io + KIRKWOOD_RECCTL);
+
+		/* enable interrupts */
+		value = readl(priv->io + KIRKWOOD_INT_MASK);
+		value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
+		writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+		/* enable record */
+		writel(ctl, priv->io + KIRKWOOD_RECCTL);
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+		/* stop audio, disable interrupts */
+		value = readl(priv->io + KIRKWOOD_RECCTL);
+		value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
+		writel(value, priv->io + KIRKWOOD_RECCTL);
+
+		value = readl(priv->io + KIRKWOOD_INT_MASK);
+		value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES;
+		writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+		/* disable all records */
+		value = readl(priv->io + KIRKWOOD_RECCTL);
+		value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
+		writel(value, priv->io + KIRKWOOD_RECCTL);
+		break;
+
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		value = readl(priv->io + KIRKWOOD_RECCTL);
+		value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
+		writel(value, priv->io + KIRKWOOD_RECCTL);
+		break;
+
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		value = readl(priv->io + KIRKWOOD_RECCTL);
+		value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE);
+		writel(value, priv->io + KIRKWOOD_RECCTL);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			       struct snd_soc_dai *dai)
+{
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		return kirkwood_i2s_play_trigger(substream, cmd, dai);
+	else
+		return kirkwood_i2s_rec_trigger(substream, cmd, dai);
+
+	return 0;
+}
+
+static int kirkwood_i2s_init(struct kirkwood_dma_data *priv)
+{
+	unsigned long value;
+	unsigned int reg_data;
+
+	/* put system in a "safe" state : */
+	/* disable audio interrupts */
+	writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE);
+	writel(0, priv->io + KIRKWOOD_INT_MASK);
+
+	reg_data = readl(priv->io + 0x1200);
+	reg_data &= (~(0x333FF8));
+	reg_data |= 0x111D18;
+	writel(reg_data, priv->io + 0x1200);
+
+	msleep(500);
+
+	reg_data = readl(priv->io + 0x1200);
+	reg_data &= (~(0x333FF8));
+	reg_data |= 0x111D18;
+	writel(reg_data, priv->io + 0x1200);
+
+	/* disable playback/record */
+	value = readl(priv->io + KIRKWOOD_PLAYCTL);
+	value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+	writel(value, priv->io + KIRKWOOD_PLAYCTL);
+
+	value = readl(priv->io + KIRKWOOD_RECCTL);
+	value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
+	writel(value, priv->io + KIRKWOOD_RECCTL);
+
+	return 0;
+
+}
+
+static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
+	.startup	= kirkwood_i2s_startup,
+	.trigger	= kirkwood_i2s_trigger,
+	.hw_params      = kirkwood_i2s_hw_params,
+	.set_fmt        = kirkwood_i2s_set_fmt,
+};
+
+static struct snd_soc_dai_driver kirkwood_i2s_dai[2] = {
+    {
+	.name = "i2s",
+	.id = 0,
+	.playback = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+				SNDRV_PCM_RATE_96000,
+		.formats = KIRKWOOD_I2S_FORMATS,
+	},
+	.capture = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+				SNDRV_PCM_RATE_96000,
+		.formats = KIRKWOOD_I2S_FORMATS,
+	},
+	.ops = &kirkwood_i2s_dai_ops,
+    },
+    {
+	.name = "spdif",
+	.id = 1,
+	.playback = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+				SNDRV_PCM_RATE_96000,
+		.formats = KIRKWOOD_SPDIF_FORMATS,
+	},
+	.capture = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+				SNDRV_PCM_RATE_96000,
+		.formats = KIRKWOOD_SPDIF_FORMATS,
+	},
+	.ops = &kirkwood_i2s_dai_ops,
+    },
+};
+
+static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk[2] = {
+    {
+	.name = "i2s",
+	.id = 0,
+	.playback = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+		.rate_min = 5512,
+		.rate_max = 192000,
+		.formats = KIRKWOOD_I2S_FORMATS,
+	},
+	.capture = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+		.rate_min = 5512,
+		.rate_max = 192000,
+		.formats = KIRKWOOD_I2S_FORMATS,
+	},
+	.ops = &kirkwood_i2s_dai_ops,
+    },
+    {
+	.name = "spdif",
+	.id = 1,
+	.playback = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+		.rate_min = 5512,
+		.rate_max = 192000,
+		.formats = KIRKWOOD_SPDIF_FORMATS,
+	},
+	.capture = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+		.rate_min = 5512,
+		.rate_max = 192000,
+		.formats = KIRKWOOD_SPDIF_FORMATS,
+	},
+	.ops = &kirkwood_i2s_dai_ops,
+    },
+};
+
+static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
+{
+	struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data;
+	struct snd_soc_dai_driver *soc_dai = kirkwood_i2s_dai;
+	struct kirkwood_dma_data *priv;
+	struct device_node *np = pdev->dev.of_node;
+	int err;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	dev_set_drvdata(&pdev->dev, priv);
+
+	if (of_device_is_compatible(np, "marvell,armada-380-audio"))
+		priv->io = devm_platform_ioremap_resource_byname(pdev, "i2s_regs");
+	else
+		priv->io = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(priv->io))
+		return PTR_ERR(priv->io);
+
+	priv->irq = platform_get_irq(pdev, 0);
+	if (priv->irq < 0)
+		return priv->irq;
+
+	if (of_device_is_compatible(np, "marvell,armada-380-audio")) {
+		err = armada_38x_i2s_init_quirk(pdev, priv, soc_dai);
+		if (err < 0)
+			return err;
+		/* Set initial pll frequency */
+		armada_38x_set_pll(priv->pll_config, 44100);
+	}
+
+	if (np) {
+		priv->burst = 128;		/* might be 32 or 128 */
+	} else if (data) {
+		priv->burst = data->burst;
+	} else {
+		dev_err(&pdev->dev, "no DT nor platform data ?!\n");
+		return -EINVAL;
+	}
+
+	priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL);
+	if (IS_ERR(priv->clk)) {
+		dev_err(&pdev->dev, "no clock\n");
+		return PTR_ERR(priv->clk);
+	}
+
+	priv->extclk = devm_clk_get(&pdev->dev, "extclk");
+	if (IS_ERR(priv->extclk)) {
+		if (PTR_ERR(priv->extclk) == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+	} else {
+		if (clk_is_match(priv->extclk, priv->clk)) {
+			devm_clk_put(&pdev->dev, priv->extclk);
+			priv->extclk = ERR_PTR(-EINVAL);
+		} else {
+			dev_info(&pdev->dev, "found external clock\n");
+			clk_prepare_enable(priv->extclk);
+			soc_dai = kirkwood_i2s_dai_extclk;
+		}
+	}
+
+	err = clk_prepare_enable(priv->clk);
+	if (err < 0)
+		return err;
+
+	/* Some sensible defaults - this reflects the powerup values */
+	priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24;
+	priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;
+
+	/* Select the burst size */
+	if (priv->burst == 32) {
+		priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32;
+		priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32;
+	} else {
+		priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128;
+		priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128;
+	}
+
+	err = snd_soc_register_component(&pdev->dev, &kirkwood_soc_component,
+					 soc_dai, 2);
+	if (err) {
+		dev_err(&pdev->dev, "snd_soc_register_component failed\n");
+		goto err_component;
+	}
+
+	kirkwood_i2s_init(priv);
+
+	return 0;
+
+ err_component:
+	if (!IS_ERR(priv->extclk))
+		clk_disable_unprepare(priv->extclk);
+	clk_disable_unprepare(priv->clk);
+
+	return err;
+}
+
+static int kirkwood_i2s_dev_remove(struct platform_device *pdev)
+{
+	struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev);
+
+	snd_soc_unregister_component(&pdev->dev);
+	if (!IS_ERR(priv->extclk))
+		clk_disable_unprepare(priv->extclk);
+	clk_disable_unprepare(priv->clk);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id mvebu_audio_of_match[] = {
+	{ .compatible = "marvell,kirkwood-audio" },
+	{ .compatible = "marvell,dove-audio" },
+	{ .compatible = "marvell,armada370-audio" },
+	{ .compatible = "marvell,armada-380-audio" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, mvebu_audio_of_match);
+#endif
+
+static struct platform_driver kirkwood_i2s_driver = {
+	.probe  = kirkwood_i2s_dev_probe,
+	.remove = kirkwood_i2s_dev_remove,
+	.driver = {
+		.name = DRV_NAME,
+		.of_match_table = of_match_ptr(mvebu_audio_of_match),
+	},
+};
+
+module_platform_driver(kirkwood_i2s_driver);
+
+/* Module information */
+MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>");
+MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mvebu-audio");