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, 638 insertions, 0 deletions

diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
new file mode 100644
index 000000000..a4e55b0c5
--- /dev/null
+++ b/drivers/usb/musb/da8xx.c
@@ -0,0 +1,638 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments DA8xx/OMAP-L1x "glue layer"
+ *
+ * Copyright (c) 2008-2009 MontaVista Software, Inc. <source@mvista.com>
+ *
+ * Based on the DaVinci "glue layer" code.
+ * Copyright (C) 2005-2006 by Texas Instruments
+ *
+ * DT support
+ * Copyright (c) 2016 Petr Kulhavy <petr@barix.com>
+ *
+ * This file is part of the Inventra Controller Driver for Linux.
+ */
+
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/usb/usb_phy_generic.h>
+
+#include "musb_core.h"
+
+/*
+ * DA8XX specific definitions
+ */
+
+/* USB 2.0 OTG module registers */
+#define DA8XX_USB_REVISION_REG	0x00
+#define DA8XX_USB_CTRL_REG	0x04
+#define DA8XX_USB_STAT_REG	0x08
+#define DA8XX_USB_EMULATION_REG 0x0c
+#define DA8XX_USB_SRP_FIX_TIME_REG 0x18
+#define DA8XX_USB_INTR_SRC_REG	0x20
+#define DA8XX_USB_INTR_SRC_SET_REG 0x24
+#define DA8XX_USB_INTR_SRC_CLEAR_REG 0x28
+#define DA8XX_USB_INTR_MASK_REG 0x2c
+#define DA8XX_USB_INTR_MASK_SET_REG 0x30
+#define DA8XX_USB_INTR_MASK_CLEAR_REG 0x34
+#define DA8XX_USB_INTR_SRC_MASKED_REG 0x38
+#define DA8XX_USB_END_OF_INTR_REG 0x3c
+#define DA8XX_USB_GENERIC_RNDIS_EP_SIZE_REG(n) (0x50 + (((n) - 1) << 2))
+
+/* Control register bits */
+#define DA8XX_SOFT_RESET_MASK	1
+
+#define DA8XX_USB_TX_EP_MASK	0x1f		/* EP0 + 4 Tx EPs */
+#define DA8XX_USB_RX_EP_MASK	0x1e		/* 4 Rx EPs */
+
+/* USB interrupt register bits */
+#define DA8XX_INTR_USB_SHIFT	16
+#define DA8XX_INTR_USB_MASK	(0x1ff << DA8XX_INTR_USB_SHIFT) /* 8 Mentor */
+					/* interrupts and DRVVBUS interrupt */
+#define DA8XX_INTR_DRVVBUS	0x100
+#define DA8XX_INTR_RX_SHIFT	8
+#define DA8XX_INTR_RX_MASK	(DA8XX_USB_RX_EP_MASK << DA8XX_INTR_RX_SHIFT)
+#define DA8XX_INTR_TX_SHIFT	0
+#define DA8XX_INTR_TX_MASK	(DA8XX_USB_TX_EP_MASK << DA8XX_INTR_TX_SHIFT)
+
+#define DA8XX_MENTOR_CORE_OFFSET 0x400
+
+struct da8xx_glue {
+	struct device		*dev;
+	struct platform_device	*musb;
+	struct platform_device	*usb_phy;
+	struct clk		*clk;
+	struct phy		*phy;
+};
+
+/*
+ * Because we don't set CTRL.UINT, it's "important" to:
+ *	- not read/write INTRUSB/INTRUSBE (except during
+ *	  initial setup, as a workaround);
+ *	- use INTSET/INTCLR instead.
+ */
+
+/**
+ * da8xx_musb_enable - enable interrupts
+ */
+static void da8xx_musb_enable(struct musb *musb)
+{
+	void __iomem *reg_base = musb->ctrl_base;
+	u32 mask;
+
+	/* Workaround: setup IRQs through both register sets. */
+	mask = ((musb->epmask & DA8XX_USB_TX_EP_MASK) << DA8XX_INTR_TX_SHIFT) |
+	       ((musb->epmask & DA8XX_USB_RX_EP_MASK) << DA8XX_INTR_RX_SHIFT) |
+	       DA8XX_INTR_USB_MASK;
+	musb_writel(reg_base, DA8XX_USB_INTR_MASK_SET_REG, mask);
+
+	/* Force the DRVVBUS IRQ so we can start polling for ID change. */
+	musb_writel(reg_base, DA8XX_USB_INTR_SRC_SET_REG,
+			DA8XX_INTR_DRVVBUS << DA8XX_INTR_USB_SHIFT);
+}
+
+/**
+ * da8xx_musb_disable - disable HDRC and flush interrupts
+ */
+static void da8xx_musb_disable(struct musb *musb)
+{
+	void __iomem *reg_base = musb->ctrl_base;
+
+	musb_writel(reg_base, DA8XX_USB_INTR_MASK_CLEAR_REG,
+		    DA8XX_INTR_USB_MASK |
+		    DA8XX_INTR_TX_MASK | DA8XX_INTR_RX_MASK);
+	musb_writel(reg_base, DA8XX_USB_END_OF_INTR_REG, 0);
+}
+
+#define portstate(stmt)		stmt
+
+static void da8xx_musb_set_vbus(struct musb *musb, int is_on)
+{
+	WARN_ON(is_on && is_peripheral_active(musb));
+}
+
+#define	POLL_SECONDS	2
+
+static void otg_timer(struct timer_list *t)
+{
+	struct musb		*musb = from_timer(musb, t, dev_timer);
+	void __iomem		*mregs = musb->mregs;
+	u8			devctl;
+	unsigned long		flags;
+
+	/*
+	 * We poll because DaVinci's won't expose several OTG-critical
+	 * status change events (from the transceiver) otherwise.
+	 */
+	devctl = musb_readb(mregs, MUSB_DEVCTL);
+	dev_dbg(musb->controller, "Poll devctl %02x (%s)\n", devctl,
+		usb_otg_state_string(musb->xceiv->otg->state));
+
+	spin_lock_irqsave(&musb->lock, flags);
+	switch (musb->xceiv->otg->state) {
+	case OTG_STATE_A_WAIT_BCON:
+		devctl &= ~MUSB_DEVCTL_SESSION;
+		musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
+
+		devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+		if (devctl & MUSB_DEVCTL_BDEVICE) {
+			musb->xceiv->otg->state = OTG_STATE_B_IDLE;
+			MUSB_DEV_MODE(musb);
+		} else {
+			musb->xceiv->otg->state = OTG_STATE_A_IDLE;
+			MUSB_HST_MODE(musb);
+		}
+		break;
+	case OTG_STATE_A_WAIT_VFALL:
+		/*
+		 * Wait till VBUS falls below SessionEnd (~0.2 V); the 1.3
+		 * RTL seems to mis-handle session "start" otherwise (or in
+		 * our case "recover"), in routine "VBUS was valid by the time
+		 * VBUSERR got reported during enumeration" cases.
+		 */
+		if (devctl & MUSB_DEVCTL_VBUS) {
+			mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ);
+			break;
+		}
+		musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
+		musb_writel(musb->ctrl_base, DA8XX_USB_INTR_SRC_SET_REG,
+			    MUSB_INTR_VBUSERROR << DA8XX_INTR_USB_SHIFT);
+		break;
+	case OTG_STATE_B_IDLE:
+		/*
+		 * There's no ID-changed IRQ, so we have no good way to tell
+		 * when to switch to the A-Default state machine (by setting
+		 * the DEVCTL.Session bit).
+		 *
+		 * Workaround:  whenever we're in B_IDLE, try setting the
+		 * session flag every few seconds.  If it works, ID was
+		 * grounded and we're now in the A-Default state machine.
+		 *
+		 * NOTE: setting the session flag is _supposed_ to trigger
+		 * SRP but clearly it doesn't.
+		 */
+		musb_writeb(mregs, MUSB_DEVCTL, devctl | MUSB_DEVCTL_SESSION);
+		devctl = musb_readb(mregs, MUSB_DEVCTL);
+		if (devctl & MUSB_DEVCTL_BDEVICE)
+			mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ);
+		else
+			musb->xceiv->otg->state = OTG_STATE_A_IDLE;
+		break;
+	default:
+		break;
+	}
+	spin_unlock_irqrestore(&musb->lock, flags);
+}
+
+static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout)
+{
+	static unsigned long last_timer;
+
+	if (timeout == 0)
+		timeout = jiffies + msecs_to_jiffies(3);
+
+	/* Never idle if active, or when VBUS timeout is not set as host */
+	if (musb->is_active || (musb->a_wait_bcon == 0 &&
+				musb->xceiv->otg->state == OTG_STATE_A_WAIT_BCON)) {
+		dev_dbg(musb->controller, "%s active, deleting timer\n",
+			usb_otg_state_string(musb->xceiv->otg->state));
+		del_timer(&musb->dev_timer);
+		last_timer = jiffies;
+		return;
+	}
+
+	if (time_after(last_timer, timeout) && timer_pending(&musb->dev_timer)) {
+		dev_dbg(musb->controller, "Longer idle timer already pending, ignoring...\n");
+		return;
+	}
+	last_timer = timeout;
+
+	dev_dbg(musb->controller, "%s inactive, starting idle timer for %u ms\n",
+		usb_otg_state_string(musb->xceiv->otg->state),
+		jiffies_to_msecs(timeout - jiffies));
+	mod_timer(&musb->dev_timer, timeout);
+}
+
+static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
+{
+	struct musb		*musb = hci;
+	void __iomem		*reg_base = musb->ctrl_base;
+	unsigned long		flags;
+	irqreturn_t		ret = IRQ_NONE;
+	u32			status;
+
+	spin_lock_irqsave(&musb->lock, flags);
+
+	/*
+	 * NOTE: DA8XX shadows the Mentor IRQs.  Don't manage them through
+	 * the Mentor registers (except for setup), use the TI ones and EOI.
+	 */
+
+	/* Acknowledge and handle non-CPPI interrupts */
+	status = musb_readl(reg_base, DA8XX_USB_INTR_SRC_MASKED_REG);
+	if (!status)
+		goto eoi;
+
+	musb_writel(reg_base, DA8XX_USB_INTR_SRC_CLEAR_REG, status);
+	dev_dbg(musb->controller, "USB IRQ %08x\n", status);
+
+	musb->int_rx = (status & DA8XX_INTR_RX_MASK) >> DA8XX_INTR_RX_SHIFT;
+	musb->int_tx = (status & DA8XX_INTR_TX_MASK) >> DA8XX_INTR_TX_SHIFT;
+	musb->int_usb = (status & DA8XX_INTR_USB_MASK) >> DA8XX_INTR_USB_SHIFT;
+
+	/*
+	 * DRVVBUS IRQs are the only proxy we have (a very poor one!) for
+	 * DA8xx's missing ID change IRQ.  We need an ID change IRQ to
+	 * switch appropriately between halves of the OTG state machine.
+	 * Managing DEVCTL.Session per Mentor docs requires that we know its
+	 * value but DEVCTL.BDevice is invalid without DEVCTL.Session set.
+	 * Also, DRVVBUS pulses for SRP (but not at 5 V)...
+	 */
+	if (status & (DA8XX_INTR_DRVVBUS << DA8XX_INTR_USB_SHIFT)) {
+		int drvvbus = musb_readl(reg_base, DA8XX_USB_STAT_REG);
+		void __iomem *mregs = musb->mregs;
+		u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
+		int err;
+
+		err = musb->int_usb & MUSB_INTR_VBUSERROR;
+		if (err) {
+			/*
+			 * The Mentor core doesn't debounce VBUS as needed
+			 * to cope with device connect current spikes. This
+			 * means it's not uncommon for bus-powered devices
+			 * to get VBUS errors during enumeration.
+			 *
+			 * This is a workaround, but newer RTL from Mentor
+			 * seems to allow a better one: "re"-starting sessions
+			 * without waiting for VBUS to stop registering in
+			 * devctl.
+			 */
+			musb->int_usb &= ~MUSB_INTR_VBUSERROR;
+			musb->xceiv->otg->state = OTG_STATE_A_WAIT_VFALL;
+			mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ);
+			WARNING("VBUS error workaround (delay coming)\n");
+		} else if (drvvbus) {
+			MUSB_HST_MODE(musb);
+			musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
+			portstate(musb->port1_status |= USB_PORT_STAT_POWER);
+			del_timer(&musb->dev_timer);
+		} else if (!(musb->int_usb & MUSB_INTR_BABBLE)) {
+			/*
+			 * When babble condition happens, drvvbus interrupt
+			 * is also generated. Ignore this drvvbus interrupt
+			 * and let babble interrupt handler recovers the
+			 * controller; otherwise, the host-mode flag is lost
+			 * due to the MUSB_DEV_MODE() call below and babble
+			 * recovery logic will not be called.
+			 */
+			musb->is_active = 0;
+			MUSB_DEV_MODE(musb);
+			musb->xceiv->otg->state = OTG_STATE_B_IDLE;
+			portstate(musb->port1_status &= ~USB_PORT_STAT_POWER);
+		}
+
+		dev_dbg(musb->controller, "VBUS %s (%s)%s, devctl %02x\n",
+				drvvbus ? "on" : "off",
+				usb_otg_state_string(musb->xceiv->otg->state),
+				err ? " ERROR" : "",
+				devctl);
+		ret = IRQ_HANDLED;
+	}
+
+	if (musb->int_tx || musb->int_rx || musb->int_usb)
+		ret |= musb_interrupt(musb);
+
+ eoi:
+	/* EOI needs to be written for the IRQ to be re-asserted. */
+	if (ret == IRQ_HANDLED || status)
+		musb_writel(reg_base, DA8XX_USB_END_OF_INTR_REG, 0);
+
+	/* Poll for ID change */
+	if (musb->xceiv->otg->state == OTG_STATE_B_IDLE)
+		mod_timer(&musb->dev_timer, jiffies + POLL_SECONDS * HZ);
+
+	spin_unlock_irqrestore(&musb->lock, flags);
+
+	return ret;
+}
+
+static int da8xx_musb_set_mode(struct musb *musb, u8 musb_mode)
+{
+	struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
+	enum phy_mode phy_mode;
+
+	/*
+	 * The PHY has some issues when it is forced in device or host mode.
+	 * Unless the user request another mode, configure the PHY in OTG mode.
+	 */
+	if (!musb->is_initialized)
+		return phy_set_mode(glue->phy, PHY_MODE_USB_OTG);
+
+	switch (musb_mode) {
+	case MUSB_HOST:		/* Force VBUS valid, ID = 0 */
+		phy_mode = PHY_MODE_USB_HOST;
+		break;
+	case MUSB_PERIPHERAL:	/* Force VBUS valid, ID = 1 */
+		phy_mode = PHY_MODE_USB_DEVICE;
+		break;
+	case MUSB_OTG:		/* Don't override the VBUS/ID comparators */
+		phy_mode = PHY_MODE_USB_OTG;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return phy_set_mode(glue->phy, phy_mode);
+}
+
+static int da8xx_musb_init(struct musb *musb)
+{
+	struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
+	void __iomem *reg_base = musb->ctrl_base;
+	u32 rev;
+	int ret = -ENODEV;
+
+	musb->mregs += DA8XX_MENTOR_CORE_OFFSET;
+
+	ret = clk_prepare_enable(glue->clk);
+	if (ret) {
+		dev_err(glue->dev, "failed to enable clock\n");
+		return ret;
+	}
+
+	/* Returns zero if e.g. not clocked */
+	rev = musb_readl(reg_base, DA8XX_USB_REVISION_REG);
+	if (!rev)
+		goto fail;
+
+	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+	if (IS_ERR_OR_NULL(musb->xceiv)) {
+		ret = -EPROBE_DEFER;
+		goto fail;
+	}
+
+	timer_setup(&musb->dev_timer, otg_timer, 0);
+
+	/* Reset the controller */
+	musb_writel(reg_base, DA8XX_USB_CTRL_REG, DA8XX_SOFT_RESET_MASK);
+
+	/* Start the on-chip PHY and its PLL. */
+	ret = phy_init(glue->phy);
+	if (ret) {
+		dev_err(glue->dev, "Failed to init phy.\n");
+		goto fail;
+	}
+
+	ret = phy_power_on(glue->phy);
+	if (ret) {
+		dev_err(glue->dev, "Failed to power on phy.\n");
+		goto err_phy_power_on;
+	}
+
+	msleep(5);
+
+	/* NOTE: IRQs are in mixed mode, not bypass to pure MUSB */
+	pr_debug("DA8xx OTG revision %08x, control %02x\n", rev,
+		 musb_readb(reg_base, DA8XX_USB_CTRL_REG));
+
+	musb->isr = da8xx_musb_interrupt;
+	return 0;
+
+err_phy_power_on:
+	phy_exit(glue->phy);
+fail:
+	clk_disable_unprepare(glue->clk);
+	return ret;
+}
+
+static int da8xx_musb_exit(struct musb *musb)
+{
+	struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
+
+	del_timer_sync(&musb->dev_timer);
+
+	phy_power_off(glue->phy);
+	phy_exit(glue->phy);
+	clk_disable_unprepare(glue->clk);
+
+	usb_put_phy(musb->xceiv);
+
+	return 0;
+}
+
+static inline u8 get_vbus_power(struct device *dev)
+{
+	struct regulator *vbus_supply;
+	int current_uA;
+
+	vbus_supply = regulator_get_optional(dev, "vbus");
+	if (IS_ERR(vbus_supply))
+		return 255;
+	current_uA = regulator_get_current_limit(vbus_supply);
+	regulator_put(vbus_supply);
+	if (current_uA <= 0 || current_uA > 510000)
+		return 255;
+	return current_uA / 1000 / 2;
+}
+
+#ifdef CONFIG_USB_TI_CPPI41_DMA
+static void da8xx_dma_controller_callback(struct dma_controller *c)
+{
+	struct musb *musb = c->musb;
+	void __iomem *reg_base = musb->ctrl_base;
+
+	musb_writel(reg_base, DA8XX_USB_END_OF_INTR_REG, 0);
+}
+
+static struct dma_controller *
+da8xx_dma_controller_create(struct musb *musb, void __iomem *base)
+{
+	struct dma_controller *controller;
+
+	controller = cppi41_dma_controller_create(musb, base);
+	if (IS_ERR_OR_NULL(controller))
+		return controller;
+
+	controller->dma_callback = da8xx_dma_controller_callback;
+
+	return controller;
+}
+#endif
+
+static const struct musb_platform_ops da8xx_ops = {
+	.quirks		= MUSB_INDEXED_EP | MUSB_PRESERVE_SESSION |
+			  MUSB_DMA_CPPI41 | MUSB_DA8XX,
+	.init		= da8xx_musb_init,
+	.exit		= da8xx_musb_exit,
+
+	.fifo_mode	= 2,
+#ifdef CONFIG_USB_TI_CPPI41_DMA
+	.dma_init	= da8xx_dma_controller_create,
+	.dma_exit	= cppi41_dma_controller_destroy,
+#endif
+	.enable		= da8xx_musb_enable,
+	.disable	= da8xx_musb_disable,
+
+	.set_mode	= da8xx_musb_set_mode,
+	.try_idle	= da8xx_musb_try_idle,
+
+	.set_vbus	= da8xx_musb_set_vbus,
+};
+
+static const struct platform_device_info da8xx_dev_info = {
+	.name		= "musb-hdrc",
+	.id		= PLATFORM_DEVID_AUTO,
+	.dma_mask	= DMA_BIT_MASK(32),
+};
+
+static const struct musb_hdrc_config da8xx_config = {
+	.ram_bits = 10,
+	.num_eps = 5,
+	.multipoint = 1,
+};
+
+static struct of_dev_auxdata da8xx_auxdata_lookup[] = {
+	OF_DEV_AUXDATA("ti,da830-cppi41", 0x01e01000, "cppi41-dmaengine",
+		       NULL),
+	{}
+};
+
+static int da8xx_probe(struct platform_device *pdev)
+{
+	struct musb_hdrc_platform_data	*pdata = dev_get_platdata(&pdev->dev);
+	struct da8xx_glue		*glue;
+	struct platform_device_info	pinfo;
+	struct clk			*clk;
+	struct device_node		*np = pdev->dev.of_node;
+	int				ret;
+
+	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
+	if (!glue)
+		return -ENOMEM;
+
+	clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(&pdev->dev, "failed to get clock\n");
+		return PTR_ERR(clk);
+	}
+
+	glue->phy = devm_phy_get(&pdev->dev, "usb-phy");
+	if (IS_ERR(glue->phy))
+		return dev_err_probe(&pdev->dev, PTR_ERR(glue->phy),
+				     "failed to get phy\n");
+
+	glue->dev			= &pdev->dev;
+	glue->clk			= clk;
+
+	if (IS_ENABLED(CONFIG_OF) && np) {
+		pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+		if (!pdata)
+			return -ENOMEM;
+
+		pdata->config	= &da8xx_config;
+		pdata->mode	= musb_get_mode(&pdev->dev);
+		pdata->power	= get_vbus_power(&pdev->dev);
+	}
+
+	pdata->platform_ops		= &da8xx_ops;
+
+	glue->usb_phy = usb_phy_generic_register();
+	ret = PTR_ERR_OR_ZERO(glue->usb_phy);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register usb_phy\n");
+		return ret;
+	}
+	platform_set_drvdata(pdev, glue);
+
+	ret = of_platform_populate(pdev->dev.of_node, NULL,
+				   da8xx_auxdata_lookup, &pdev->dev);
+	if (ret)
+		return ret;
+
+	pinfo = da8xx_dev_info;
+	pinfo.parent = &pdev->dev;
+	pinfo.res = pdev->resource;
+	pinfo.num_res = pdev->num_resources;
+	pinfo.data = pdata;
+	pinfo.size_data = sizeof(*pdata);
+	pinfo.fwnode = of_fwnode_handle(np);
+	pinfo.of_node_reused = true;
+
+	glue->musb = platform_device_register_full(&pinfo);
+	ret = PTR_ERR_OR_ZERO(glue->musb);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
+		usb_phy_generic_unregister(glue->usb_phy);
+	}
+
+	return ret;
+}
+
+static int da8xx_remove(struct platform_device *pdev)
+{
+	struct da8xx_glue		*glue = platform_get_drvdata(pdev);
+
+	platform_device_unregister(glue->musb);
+	usb_phy_generic_unregister(glue->usb_phy);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int da8xx_suspend(struct device *dev)
+{
+	int ret;
+	struct da8xx_glue *glue = dev_get_drvdata(dev);
+
+	ret = phy_power_off(glue->phy);
+	if (ret)
+		return ret;
+	clk_disable_unprepare(glue->clk);
+
+	return 0;
+}
+
+static int da8xx_resume(struct device *dev)
+{
+	int ret;
+	struct da8xx_glue *glue = dev_get_drvdata(dev);
+
+	ret = clk_prepare_enable(glue->clk);
+	if (ret)
+		return ret;
+	return phy_power_on(glue->phy);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(da8xx_pm_ops, da8xx_suspend, da8xx_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id da8xx_id_table[] = {
+	{
+		.compatible = "ti,da830-musb",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, da8xx_id_table);
+#endif
+
+static struct platform_driver da8xx_driver = {
+	.probe		= da8xx_probe,
+	.remove		= da8xx_remove,
+	.driver		= {
+		.name	= "musb-da8xx",
+		.pm = &da8xx_pm_ops,
+		.of_match_table = of_match_ptr(da8xx_id_table),
+	},
+};
+
+MODULE_DESCRIPTION("DA8xx/OMAP-L1x MUSB Glue Layer");
+MODULE_AUTHOR("Sergei Shtylyov <sshtylyov@ru.mvista.com>");
+MODULE_LICENSE("GPL v2");
+module_platform_driver(da8xx_driver);