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, 472 insertions, 0 deletions

diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
new file mode 100644
index 000000000..080d7970a
--- /dev/null
+++ b/drivers/mfd/omap-usb-tll.c
@@ -0,0 +1,472 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * omap-usb-tll.c - The USB TLL driver for OMAP EHCI & OHCI
+ *
+ * Copyright (C) 2012-2013 Texas Instruments Incorporated - https://www.ti.com
+ * Author: Keshava Munegowda <keshava_mgowda@ti.com>
+ * Author: Roger Quadros <rogerq@ti.com>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_data/usb-omap.h>
+#include <linux/of.h>
+
+#include "omap-usb.h"
+
+#define USBTLL_DRIVER_NAME	"usbhs_tll"
+
+/* TLL Register Set */
+#define	OMAP_USBTLL_REVISION				(0x00)
+#define	OMAP_USBTLL_SYSCONFIG				(0x10)
+#define	OMAP_USBTLL_SYSCONFIG_CACTIVITY			(1 << 8)
+#define	OMAP_USBTLL_SYSCONFIG_SIDLEMODE			(1 << 3)
+#define	OMAP_USBTLL_SYSCONFIG_ENAWAKEUP			(1 << 2)
+#define	OMAP_USBTLL_SYSCONFIG_SOFTRESET			(1 << 1)
+#define	OMAP_USBTLL_SYSCONFIG_AUTOIDLE			(1 << 0)
+
+#define	OMAP_USBTLL_SYSSTATUS				(0x14)
+#define	OMAP_USBTLL_SYSSTATUS_RESETDONE			(1 << 0)
+
+#define	OMAP_USBTLL_IRQSTATUS				(0x18)
+#define	OMAP_USBTLL_IRQENABLE				(0x1C)
+
+#define	OMAP_TLL_SHARED_CONF				(0x30)
+#define	OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN		(1 << 6)
+#define	OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN		(1 << 5)
+#define	OMAP_TLL_SHARED_CONF_USB_DIVRATION		(1 << 2)
+#define	OMAP_TLL_SHARED_CONF_FCLK_REQ			(1 << 1)
+#define	OMAP_TLL_SHARED_CONF_FCLK_IS_ON			(1 << 0)
+
+#define	OMAP_TLL_CHANNEL_CONF(num)			(0x040 + 0x004 * num)
+#define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT		24
+#define OMAP_TLL_CHANNEL_CONF_DRVVBUS			(1 << 16)
+#define OMAP_TLL_CHANNEL_CONF_CHRGVBUS			(1 << 15)
+#define	OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF		(1 << 11)
+#define	OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE		(1 << 10)
+#define	OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE		(1 << 9)
+#define	OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE		(1 << 8)
+#define OMAP_TLL_CHANNEL_CONF_MODE_TRANSPARENT_UTMI	(2 << 1)
+#define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS		(1 << 1)
+#define	OMAP_TLL_CHANNEL_CONF_CHANEN			(1 << 0)
+
+#define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0		0x0
+#define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM		0x1
+#define OMAP_TLL_FSLSMODE_3PIN_PHY			0x2
+#define OMAP_TLL_FSLSMODE_4PIN_PHY			0x3
+#define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0		0x4
+#define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM		0x5
+#define OMAP_TLL_FSLSMODE_3PIN_TLL			0x6
+#define OMAP_TLL_FSLSMODE_4PIN_TLL			0x7
+#define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0		0xA
+#define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM		0xB
+
+#define	OMAP_TLL_ULPI_FUNCTION_CTRL(num)		(0x804 + 0x100 * num)
+#define	OMAP_TLL_ULPI_INTERFACE_CTRL(num)		(0x807 + 0x100 * num)
+#define	OMAP_TLL_ULPI_OTG_CTRL(num)			(0x80A + 0x100 * num)
+#define	OMAP_TLL_ULPI_INT_EN_RISE(num)			(0x80D + 0x100 * num)
+#define	OMAP_TLL_ULPI_INT_EN_FALL(num)			(0x810 + 0x100 * num)
+#define	OMAP_TLL_ULPI_INT_STATUS(num)			(0x813 + 0x100 * num)
+#define	OMAP_TLL_ULPI_INT_LATCH(num)			(0x814 + 0x100 * num)
+#define	OMAP_TLL_ULPI_DEBUG(num)			(0x815 + 0x100 * num)
+#define	OMAP_TLL_ULPI_SCRATCH_REGISTER(num)		(0x816 + 0x100 * num)
+
+#define OMAP_REV2_TLL_CHANNEL_COUNT			2
+#define OMAP_TLL_CHANNEL_COUNT				3
+#define OMAP_TLL_CHANNEL_1_EN_MASK			(1 << 0)
+#define OMAP_TLL_CHANNEL_2_EN_MASK			(1 << 1)
+#define OMAP_TLL_CHANNEL_3_EN_MASK			(1 << 2)
+
+/* Values of USBTLL_REVISION - Note: these are not given in the TRM */
+#define OMAP_USBTLL_REV1		0x00000015	/* OMAP3 */
+#define OMAP_USBTLL_REV2		0x00000018	/* OMAP 3630 */
+#define OMAP_USBTLL_REV3		0x00000004	/* OMAP4 */
+#define OMAP_USBTLL_REV4		0x00000006	/* OMAP5 */
+
+#define is_ehci_tll_mode(x)	(x == OMAP_EHCI_PORT_MODE_TLL)
+
+/* only PHY and UNUSED modes don't need TLL */
+#define omap_usb_mode_needs_tll(x)	((x) != OMAP_USBHS_PORT_MODE_UNUSED &&\
+					 (x) != OMAP_EHCI_PORT_MODE_PHY)
+
+struct usbtll_omap {
+	void __iomem	*base;
+	int		nch;		/* num. of channels */
+	struct clk	*ch_clk[];	/* must be the last member */
+};
+
+/*-------------------------------------------------------------------------*/
+
+static const char usbtll_driver_name[] = USBTLL_DRIVER_NAME;
+static struct device	*tll_dev;
+static DEFINE_SPINLOCK(tll_lock);	/* serialize access to tll_dev */
+
+/*-------------------------------------------------------------------------*/
+
+static inline void usbtll_write(void __iomem *base, u32 reg, u32 val)
+{
+	writel_relaxed(val, base + reg);
+}
+
+static inline u32 usbtll_read(void __iomem *base, u32 reg)
+{
+	return readl_relaxed(base + reg);
+}
+
+static inline void usbtll_writeb(void __iomem *base, u32 reg, u8 val)
+{
+	writeb_relaxed(val, base + reg);
+}
+
+static inline u8 usbtll_readb(void __iomem *base, u32 reg)
+{
+	return readb_relaxed(base + reg);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
+{
+	switch (pmode) {
+	case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
+	case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
+	case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
+	case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
+	case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
+	case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
+	case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
+	case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
+	case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
+	case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
+		return true;
+
+	default:
+		return false;
+	}
+}
+
+/*
+ * convert the port-mode enum to a value we can use in the FSLSMODE
+ * field of USBTLL_CHANNEL_CONF
+ */
+static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
+{
+	switch (mode) {
+	case OMAP_USBHS_PORT_MODE_UNUSED:
+	case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
+		return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
+
+	case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
+		return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;
+
+	case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
+		return OMAP_TLL_FSLSMODE_3PIN_PHY;
+
+	case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
+		return OMAP_TLL_FSLSMODE_4PIN_PHY;
+
+	case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
+		return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;
+
+	case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
+		return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;
+
+	case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
+		return OMAP_TLL_FSLSMODE_3PIN_TLL;
+
+	case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
+		return OMAP_TLL_FSLSMODE_4PIN_TLL;
+
+	case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
+		return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;
+
+	case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
+		return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
+	default:
+		pr_warn("Invalid port mode, using default\n");
+		return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
+	}
+}
+
+/**
+ * usbtll_omap_probe - initialize TI-based HCDs
+ *
+ * Allocates basic resources for this USB host controller.
+ *
+ * @pdev: Pointer to this device's platform device structure
+ */
+static int usbtll_omap_probe(struct platform_device *pdev)
+{
+	struct device				*dev =  &pdev->dev;
+	struct resource				*res;
+	struct usbtll_omap			*tll;
+	void __iomem				*base;
+	int					i, nch, ver;
+
+	dev_dbg(dev, "starting TI HSUSB TLL Controller\n");
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+
+	ver = usbtll_read(base, OMAP_USBTLL_REVISION);
+	switch (ver) {
+	case OMAP_USBTLL_REV1:
+	case OMAP_USBTLL_REV4:
+		nch = OMAP_TLL_CHANNEL_COUNT;
+		break;
+	case OMAP_USBTLL_REV2:
+	case OMAP_USBTLL_REV3:
+		nch = OMAP_REV2_TLL_CHANNEL_COUNT;
+		break;
+	default:
+		nch = OMAP_TLL_CHANNEL_COUNT;
+		dev_dbg(dev, "rev 0x%x not recognized, assuming %d channels\n",
+			ver, nch);
+		break;
+	}
+
+	tll = devm_kzalloc(dev, sizeof(*tll) + sizeof(tll->ch_clk[nch]),
+			   GFP_KERNEL);
+	if (!tll) {
+		pm_runtime_put_sync(dev);
+		pm_runtime_disable(dev);
+		return -ENOMEM;
+	}
+
+	tll->base = base;
+	tll->nch = nch;
+	platform_set_drvdata(pdev, tll);
+
+	for (i = 0; i < nch; i++) {
+		char clkname[] = "usb_tll_hs_usb_chx_clk";
+
+		snprintf(clkname, sizeof(clkname),
+					"usb_tll_hs_usb_ch%d_clk", i);
+		tll->ch_clk[i] = clk_get(dev, clkname);
+
+		if (IS_ERR(tll->ch_clk[i]))
+			dev_dbg(dev, "can't get clock : %s\n", clkname);
+		else
+			clk_prepare(tll->ch_clk[i]);
+	}
+
+	pm_runtime_put_sync(dev);
+	/* only after this can omap_tll_enable/disable work */
+	spin_lock(&tll_lock);
+	tll_dev = dev;
+	spin_unlock(&tll_lock);
+
+	return 0;
+}
+
+/**
+ * usbtll_omap_remove - shutdown processing for UHH & TLL HCDs
+ * @pdev: USB Host Controller being removed
+ *
+ * Reverses the effect of usbtll_omap_probe().
+ */
+static int usbtll_omap_remove(struct platform_device *pdev)
+{
+	struct usbtll_omap *tll = platform_get_drvdata(pdev);
+	int i;
+
+	spin_lock(&tll_lock);
+	tll_dev = NULL;
+	spin_unlock(&tll_lock);
+
+	for (i = 0; i < tll->nch; i++) {
+		if (!IS_ERR(tll->ch_clk[i])) {
+			clk_unprepare(tll->ch_clk[i]);
+			clk_put(tll->ch_clk[i]);
+		}
+	}
+
+	pm_runtime_disable(&pdev->dev);
+	return 0;
+}
+
+static const struct of_device_id usbtll_omap_dt_ids[] = {
+	{ .compatible = "ti,usbhs-tll" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, usbtll_omap_dt_ids);
+
+static struct platform_driver usbtll_omap_driver = {
+	.driver = {
+		.name		= usbtll_driver_name,
+		.of_match_table = usbtll_omap_dt_ids,
+	},
+	.probe		= usbtll_omap_probe,
+	.remove		= usbtll_omap_remove,
+};
+
+int omap_tll_init(struct usbhs_omap_platform_data *pdata)
+{
+	int i;
+	bool needs_tll;
+	unsigned reg;
+	struct usbtll_omap *tll;
+
+	if (!tll_dev)
+		return -ENODEV;
+
+	pm_runtime_get_sync(tll_dev);
+
+	spin_lock(&tll_lock);
+	tll = dev_get_drvdata(tll_dev);
+	needs_tll = false;
+	for (i = 0; i < tll->nch; i++)
+		needs_tll |= omap_usb_mode_needs_tll(pdata->port_mode[i]);
+
+	if (needs_tll) {
+		void __iomem *base = tll->base;
+
+		/* Program Common TLL register */
+		reg = usbtll_read(base, OMAP_TLL_SHARED_CONF);
+		reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
+			| OMAP_TLL_SHARED_CONF_USB_DIVRATION);
+		reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
+		reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
+
+		usbtll_write(base, OMAP_TLL_SHARED_CONF, reg);
+
+		/* Enable channels now */
+		for (i = 0; i < tll->nch; i++) {
+			reg = usbtll_read(base,	OMAP_TLL_CHANNEL_CONF(i));
+
+			if (is_ohci_port(pdata->port_mode[i])) {
+				reg |= ohci_omap3_fslsmode(pdata->port_mode[i])
+				<< OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
+				reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
+			} else if (pdata->port_mode[i] ==
+					OMAP_EHCI_PORT_MODE_TLL) {
+				/*
+				 * Disable UTMI AutoIdle, BitStuffing
+				 * and use SDR Mode. Enable ULPI AutoIdle.
+				 */
+				reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
+					| OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
+				reg |= OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF;
+				reg |= OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE;
+			} else if (pdata->port_mode[i] ==
+					OMAP_EHCI_PORT_MODE_HSIC) {
+				/*
+				 * HSIC Mode requires UTMI port configurations
+				 */
+				reg |= OMAP_TLL_CHANNEL_CONF_DRVVBUS
+				 | OMAP_TLL_CHANNEL_CONF_CHRGVBUS
+				 | OMAP_TLL_CHANNEL_CONF_MODE_TRANSPARENT_UTMI
+				 | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF;
+			} else {
+				continue;
+			}
+			reg |= OMAP_TLL_CHANNEL_CONF_CHANEN;
+			usbtll_write(base, OMAP_TLL_CHANNEL_CONF(i), reg);
+
+			usbtll_writeb(base,
+				      OMAP_TLL_ULPI_SCRATCH_REGISTER(i),
+				      0xbe);
+		}
+	}
+
+	spin_unlock(&tll_lock);
+	pm_runtime_put_sync(tll_dev);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(omap_tll_init);
+
+int omap_tll_enable(struct usbhs_omap_platform_data *pdata)
+{
+	int i;
+	struct usbtll_omap *tll;
+
+	if (!tll_dev)
+		return -ENODEV;
+
+	pm_runtime_get_sync(tll_dev);
+
+	spin_lock(&tll_lock);
+	tll = dev_get_drvdata(tll_dev);
+
+	for (i = 0; i < tll->nch; i++) {
+		if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
+			int r;
+
+			if (IS_ERR(tll->ch_clk[i]))
+				continue;
+
+			r = clk_enable(tll->ch_clk[i]);
+			if (r) {
+				dev_err(tll_dev,
+				 "Error enabling ch %d clock: %d\n", i, r);
+			}
+		}
+	}
+
+	spin_unlock(&tll_lock);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(omap_tll_enable);
+
+int omap_tll_disable(struct usbhs_omap_platform_data *pdata)
+{
+	int i;
+	struct usbtll_omap *tll;
+
+	if (!tll_dev)
+		return -ENODEV;
+
+	spin_lock(&tll_lock);
+	tll = dev_get_drvdata(tll_dev);
+
+	for (i = 0; i < tll->nch; i++) {
+		if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
+			if (!IS_ERR(tll->ch_clk[i]))
+				clk_disable(tll->ch_clk[i]);
+		}
+	}
+
+	spin_unlock(&tll_lock);
+	pm_runtime_put_sync(tll_dev);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(omap_tll_disable);
+
+MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
+MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("usb tll driver for TI OMAP EHCI and OHCI controllers");
+
+static int __init omap_usbtll_drvinit(void)
+{
+	return platform_driver_register(&usbtll_omap_driver);
+}
+
+/*
+ * init before usbhs core driver;
+ * The usbtll driver should be initialized before
+ * the usbhs core driver probe function is called.
+ */
+fs_initcall(omap_usbtll_drvinit);
+
+static void __exit omap_usbtll_drvexit(void)
+{
+	platform_driver_unregister(&usbtll_omap_driver);
+}
+module_exit(omap_usbtll_drvexit);