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, 1208 insertions, 0 deletions

diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
new file mode 100644
index 000000000..77cba71bc
--- /dev/null
+++ b/drivers/usb/serial/iuu_phoenix.c
@@ -0,0 +1,1208 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Infinity Unlimited USB Phoenix driver
+ *
+ * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
+
+ * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
+ *
+ * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
+ *
+ *  And tested with help of WB Electronics
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+#include "iuu_phoenix.h"
+#include <linux/random.h>
+
+#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
+
+static const struct usb_device_id id_table[] = {
+	{USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
+	{}			/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+/* turbo parameter */
+static int boost = 100;
+static int clockmode = 1;
+static int cdmode = 1;
+static int iuu_cardin;
+static int iuu_cardout;
+static bool xmas;
+static int vcc_default = 5;
+
+static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
+static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
+static void read_rxcmd_callback(struct urb *urb);
+
+struct iuu_private {
+	spinlock_t lock;	/* store irq state */
+	u8 line_status;
+	int tiostatus;		/* store IUART SIGNAL for tiocmget call */
+	u8 reset;		/* if 1 reset is needed */
+	int poll;		/* number of poll */
+	u8 *writebuf;		/* buffer for writing to device */
+	int writelen;		/* num of byte to write to device */
+	u8 *buf;		/* used for initialize speed */
+	u8 len;
+	int vcc;		/* vcc (either 3 or 5 V) */
+	u32 boost;
+	u32 clk;
+};
+
+static int iuu_port_probe(struct usb_serial_port *port)
+{
+	struct iuu_private *priv;
+	int ret;
+
+	priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->buf = kzalloc(256, GFP_KERNEL);
+	if (!priv->buf) {
+		kfree(priv);
+		return -ENOMEM;
+	}
+
+	priv->writebuf = kzalloc(256, GFP_KERNEL);
+	if (!priv->writebuf) {
+		kfree(priv->buf);
+		kfree(priv);
+		return -ENOMEM;
+	}
+
+	priv->vcc = vcc_default;
+	spin_lock_init(&priv->lock);
+
+	usb_set_serial_port_data(port, priv);
+
+	ret = iuu_create_sysfs_attrs(port);
+	if (ret) {
+		kfree(priv->writebuf);
+		kfree(priv->buf);
+		kfree(priv);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void iuu_port_remove(struct usb_serial_port *port)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+
+	iuu_remove_sysfs_attrs(port);
+	kfree(priv->writebuf);
+	kfree(priv->buf);
+	kfree(priv);
+}
+
+static int iuu_tiocmset(struct tty_struct *tty,
+			unsigned int set, unsigned int clear)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+
+	/* FIXME: locking on tiomstatus */
+	dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
+		__func__, set, clear);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
+		dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
+		priv->reset = 1;
+	}
+	if (set & TIOCM_RTS)
+		priv->tiostatus = TIOCM_RTS;
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+	return 0;
+}
+
+/* This is used to provide a carrier detect mechanism
+ * When a card is present, the response is 0x00
+ * When no card , the reader respond with TIOCM_CD
+ * This is known as CD autodetect mechanism
+ */
+static int iuu_tiocmget(struct tty_struct *tty)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	int rc;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	rc = priv->tiostatus;
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return rc;
+}
+
+static void iuu_rxcmd(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	int status = urb->status;
+
+	if (status) {
+		dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
+		/* error stop all */
+		return;
+	}
+
+
+	memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 1,
+			  read_rxcmd_callback, port);
+	usb_submit_urb(port->write_urb, GFP_ATOMIC);
+}
+
+static int iuu_reset(struct usb_serial_port *port, u8 wt)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	int result;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+
+	/* Prepare the reset sequence */
+
+	*buf_ptr++ = IUU_RST_SET;
+	*buf_ptr++ = IUU_DELAY_MS;
+	*buf_ptr++ = wt;
+	*buf_ptr = IUU_RST_CLEAR;
+
+	/* send the sequence */
+
+	usb_fill_bulk_urb(port->write_urb,
+			  port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+	priv->reset = 0;
+	return result;
+}
+
+/* Status Function
+ * Return value is
+ * 0x00 = no card
+ * 0x01 = smartcard
+ * 0x02 = sim card
+ */
+static void iuu_update_status_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	u8 *st;
+	int status = urb->status;
+
+	if (status) {
+		dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
+		/* error stop all */
+		return;
+	}
+
+	st = urb->transfer_buffer;
+	dev_dbg(&port->dev, "%s - enter\n", __func__);
+	if (urb->actual_length == 1) {
+		switch (st[0]) {
+		case 0x1:
+			priv->tiostatus = iuu_cardout;
+			break;
+		case 0x0:
+			priv->tiostatus = iuu_cardin;
+			break;
+		default:
+			priv->tiostatus = iuu_cardin;
+		}
+	}
+	iuu_rxcmd(urb);
+}
+
+static void iuu_status_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	int status = urb->status;
+
+	dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer, 256,
+			  iuu_update_status_callback, port);
+	usb_submit_urb(port->read_urb, GFP_ATOMIC);
+}
+
+static int iuu_status(struct usb_serial_port *port)
+{
+	int result;
+
+	memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 1,
+			  iuu_status_callback, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+	return result;
+
+}
+
+static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
+{
+	int status;
+	struct usb_serial *serial = port->serial;
+	int actual = 0;
+
+	/* send the data out the bulk port */
+
+	status =
+	    usb_bulk_msg(serial->dev,
+			 usb_sndbulkpipe(serial->dev,
+					 port->bulk_out_endpointAddress), buf,
+			 count, &actual, 1000);
+
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
+	else
+		dev_dbg(&port->dev, "%s - write OK !\n", __func__);
+	return status;
+}
+
+static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
+{
+	int status;
+	struct usb_serial *serial = port->serial;
+	int actual = 0;
+
+	/* send the data out the bulk port */
+	status =
+	    usb_bulk_msg(serial->dev,
+			 usb_rcvbulkpipe(serial->dev,
+					 port->bulk_in_endpointAddress), buf,
+			 count, &actual, 1000);
+
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
+	else
+		dev_dbg(&port->dev, "%s - read OK !\n", __func__);
+	return status;
+}
+
+static int iuu_led(struct usb_serial_port *port, unsigned int R,
+		   unsigned int G, unsigned int B, u8 f)
+{
+	int status;
+	u8 *buf;
+	buf = kmalloc(8, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	buf[0] = IUU_SET_LED;
+	buf[1] = R & 0xFF;
+	buf[2] = (R >> 8) & 0xFF;
+	buf[3] = G & 0xFF;
+	buf[4] = (G >> 8) & 0xFF;
+	buf[5] = B & 0xFF;
+	buf[6] = (B >> 8) & 0xFF;
+	buf[7] = f;
+	status = bulk_immediate(port, buf, 8);
+	kfree(buf);
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
+	else
+		dev_dbg(&port->dev, "%s - led OK !\n", __func__);
+	return IUU_OPERATION_OK;
+}
+
+static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
+				 u8 b2, u8 freq)
+{
+	*buf++ = IUU_SET_LED;
+	*buf++ = r1;
+	*buf++ = r2;
+	*buf++ = g1;
+	*buf++ = g2;
+	*buf++ = b1;
+	*buf++ = b2;
+	*buf = freq;
+}
+
+static void iuu_led_activity_on(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+
+	if (xmas) {
+		buf_ptr[0] = IUU_SET_LED;
+		get_random_bytes(buf_ptr + 1, 6);
+		buf_ptr[7] = 1;
+	} else {
+		iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
+	}
+
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 8 ,
+			  iuu_rxcmd, port);
+	usb_submit_urb(port->write_urb, GFP_ATOMIC);
+}
+
+static void iuu_led_activity_off(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+
+	if (xmas) {
+		iuu_rxcmd(urb);
+		return;
+	}
+
+	iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
+
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 8 ,
+			  iuu_rxcmd, port);
+	usb_submit_urb(port->write_urb, GFP_ATOMIC);
+}
+
+
+
+static int iuu_clk(struct usb_serial_port *port, int dwFrq)
+{
+	int status;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	int Count = 0;
+	u8 FrqGenAdr = 0x69;
+	u8 DIV = 0;		/* 8bit */
+	u8 XDRV = 0;		/* 8bit */
+	u8 PUMP = 0;		/* 3bit */
+	u8 PBmsb = 0;		/* 2bit */
+	u8 PBlsb = 0;		/* 8bit */
+	u8 PO = 0;		/* 1bit */
+	u8 Q = 0;		/* 7bit */
+	/* 24bit = 3bytes */
+	unsigned int P = 0;
+	unsigned int P2 = 0;
+	int frq = (int)dwFrq;
+
+	if (frq == 0) {
+		priv->buf[Count++] = IUU_UART_WRITE_I2C;
+		priv->buf[Count++] = FrqGenAdr << 1;
+		priv->buf[Count++] = 0x09;
+		priv->buf[Count++] = 0x00;
+
+		status = bulk_immediate(port, (u8 *) priv->buf, Count);
+		if (status != 0) {
+			dev_dbg(&port->dev, "%s - write error\n", __func__);
+			return status;
+		}
+	} else if (frq == 3579000) {
+		DIV = 100;
+		P = 1193;
+		Q = 40;
+		XDRV = 0;
+	} else if (frq == 3680000) {
+		DIV = 105;
+		P = 161;
+		Q = 5;
+		XDRV = 0;
+	} else if (frq == 6000000) {
+		DIV = 66;
+		P = 66;
+		Q = 2;
+		XDRV = 0x28;
+	} else {
+		unsigned int result = 0;
+		unsigned int tmp = 0;
+		unsigned int check;
+		unsigned int check2;
+		char found = 0x00;
+		unsigned int lQ = 2;
+		unsigned int lP = 2055;
+		unsigned int lDiv = 4;
+
+		for (lQ = 2; lQ <= 47 && !found; lQ++)
+			for (lP = 2055; lP >= 8 && !found; lP--)
+				for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
+					tmp = (12000000 / lDiv) * (lP / lQ);
+					if (abs((int)(tmp - frq)) <
+					    abs((int)(frq - result))) {
+						check2 = (12000000 / lQ);
+						if (check2 < 250000)
+							continue;
+						check = (12000000 / lQ) * lP;
+						if (check > 400000000)
+							continue;
+						if (check < 100000000)
+							continue;
+						if (lDiv < 4 || lDiv > 127)
+							continue;
+						result = tmp;
+						P = lP;
+						DIV = lDiv;
+						Q = lQ;
+						if (result == frq)
+							found = 0x01;
+					}
+				}
+	}
+	P2 = ((P - PO) / 2) - 4;
+	PUMP = 0x04;
+	PBmsb = (P2 >> 8 & 0x03);
+	PBlsb = P2 & 0xFF;
+	PO = (P >> 10) & 0x01;
+	Q = Q - 2;
+
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x09;
+	priv->buf[Count++] = 0x20;	/* Adr = 0x09 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x0C;
+	priv->buf[Count++] = DIV;	/* Adr = 0x0C */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x12;
+	priv->buf[Count++] = XDRV;	/* Adr = 0x12 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x13;
+	priv->buf[Count++] = 0x6B;	/* Adr = 0x13 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x40;
+	priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
+			     (PBmsb & 0x03);	/* Adr = 0x40 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x41;
+	priv->buf[Count++] = PBlsb;	/* Adr = 0x41 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x42;
+	priv->buf[Count++] = Q | (((PO & 0x01) << 7));	/* Adr = 0x42 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x44;
+	priv->buf[Count++] = (char)0xFF;	/* Adr = 0x44 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x45;
+	priv->buf[Count++] = (char)0xFE;	/* Adr = 0x45 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x46;
+	priv->buf[Count++] = 0x7F;	/* Adr = 0x46 */
+	priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
+	priv->buf[Count++] = FrqGenAdr << 1;
+	priv->buf[Count++] = 0x47;
+	priv->buf[Count++] = (char)0x84;	/* Adr = 0x47 */
+
+	status = bulk_immediate(port, (u8 *) priv->buf, Count);
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - write error\n", __func__);
+	return status;
+}
+
+static int iuu_uart_flush(struct usb_serial_port *port)
+{
+	struct device *dev = &port->dev;
+	int i;
+	int status;
+	u8 *rxcmd;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+
+	if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
+		return -EIO;
+
+	rxcmd = kmalloc(1, GFP_KERNEL);
+	if (!rxcmd)
+		return -ENOMEM;
+
+	rxcmd[0] = IUU_UART_RX;
+
+	for (i = 0; i < 2; i++) {
+		status = bulk_immediate(port, rxcmd, 1);
+		if (status != IUU_OPERATION_OK) {
+			dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
+			goto out_free;
+		}
+
+		status = read_immediate(port, &priv->len, 1);
+		if (status != IUU_OPERATION_OK) {
+			dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
+			goto out_free;
+		}
+
+		if (priv->len > 0) {
+			dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
+			status = read_immediate(port, priv->buf, priv->len);
+			if (status != IUU_OPERATION_OK) {
+				dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
+				goto out_free;
+			}
+		}
+	}
+	dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
+	iuu_led(port, 0, 0xF000, 0, 0xFF);
+
+out_free:
+	kfree(rxcmd);
+
+	return status;
+}
+
+static void read_buf_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	unsigned char *data = urb->transfer_buffer;
+	int status = urb->status;
+
+	if (status) {
+		if (status == -EPROTO) {
+			/* reschedule needed */
+		}
+		return;
+	}
+
+	dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
+
+	if (urb->actual_length) {
+		tty_insert_flip_string(&port->port, data, urb->actual_length);
+		tty_flip_buffer_push(&port->port);
+	}
+	iuu_led_activity_on(urb);
+}
+
+static int iuu_bulk_write(struct usb_serial_port *port)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	int result;
+	int buf_len;
+	char *buf_ptr = port->write_urb->transfer_buffer;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	*buf_ptr++ = IUU_UART_ESC;
+	*buf_ptr++ = IUU_UART_TX;
+	*buf_ptr++ = priv->writelen;
+
+	memcpy(buf_ptr, priv->writebuf, priv->writelen);
+	buf_len = priv->writelen;
+	priv->writelen = 0;
+	spin_unlock_irqrestore(&priv->lock, flags);
+	dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
+		buf_len, buf_len, buf_ptr);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, buf_len + 3,
+			  iuu_rxcmd, port);
+	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+	usb_serial_port_softint(port);
+	return result;
+}
+
+static int iuu_read_buf(struct usb_serial_port *port, int len)
+{
+	int result;
+
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer, len,
+			  read_buf_callback, port);
+	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+	return result;
+}
+
+static void iuu_uart_read_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+	int status = urb->status;
+	int len = 0;
+	unsigned char *data = urb->transfer_buffer;
+	priv->poll++;
+
+	if (status) {
+		dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
+		/* error stop all */
+		return;
+	}
+
+	if (urb->actual_length == 1)
+		len = (int) data[0];
+
+	if (urb->actual_length > 1) {
+		dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
+		    urb->actual_length);
+		return;
+	}
+	/* if len > 0 call readbuf */
+
+	if (len > 0) {
+		dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
+			__func__, len);
+		status = iuu_read_buf(port, len);
+		return;
+	}
+	/* need to update status  ? */
+	if (priv->poll > 99) {
+		status = iuu_status(port);
+		priv->poll = 0;
+		return;
+	}
+
+	/* reset waiting ? */
+
+	if (priv->reset == 1) {
+		status = iuu_reset(port, 0xC);
+		return;
+	}
+	/* Writebuf is waiting */
+	spin_lock_irqsave(&priv->lock, flags);
+	if (priv->writelen > 0) {
+		spin_unlock_irqrestore(&priv->lock, flags);
+		status = iuu_bulk_write(port);
+		return;
+	}
+	spin_unlock_irqrestore(&priv->lock, flags);
+	/* if nothing to write call again rxcmd */
+	dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
+	iuu_led_activity_off(urb);
+}
+
+static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
+			  const u8 *buf, int count)
+{
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	count = min(count, 256 - priv->writelen);
+	if (count == 0)
+		goto out;
+
+	/* fill the buffer */
+	memcpy(priv->writebuf + priv->writelen, buf, count);
+	priv->writelen += count;
+out:
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return count;
+}
+
+static void read_rxcmd_callback(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+	int result;
+	int status = urb->status;
+
+	if (status) {
+		/* error stop all */
+		return;
+	}
+
+	usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+			  usb_rcvbulkpipe(port->serial->dev,
+					  port->bulk_in_endpointAddress),
+			  port->read_urb->transfer_buffer, 256,
+			  iuu_uart_read_callback, port);
+	result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
+	dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
+}
+
+static int iuu_uart_on(struct usb_serial_port *port)
+{
+	int status;
+	u8 *buf;
+
+	buf = kmalloc(4, GFP_KERNEL);
+
+	if (!buf)
+		return -ENOMEM;
+
+	buf[0] = IUU_UART_ENABLE;
+	buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
+	buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
+	buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
+
+	status = bulk_immediate(port, buf, 4);
+	if (status != IUU_OPERATION_OK) {
+		dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
+		goto uart_enable_failed;
+	}
+	/*  iuu_reset() the card after iuu_uart_on() */
+	status = iuu_uart_flush(port);
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
+uart_enable_failed:
+	kfree(buf);
+	return status;
+}
+
+/*  Disables the IUU UART (a.k.a. the Phoenix voiderface) */
+static int iuu_uart_off(struct usb_serial_port *port)
+{
+	int status;
+	u8 *buf;
+	buf = kmalloc(1, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	buf[0] = IUU_UART_DISABLE;
+
+	status = bulk_immediate(port, buf, 1);
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
+
+	kfree(buf);
+	return status;
+}
+
+static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
+			 u32 *actual, u8 parity)
+{
+	int status;
+	u32 baud;
+	u8 *dataout;
+	u8 DataCount = 0;
+	u8 T1Frekvens = 0;
+	u8 T1reload = 0;
+	unsigned int T1FrekvensHZ = 0;
+
+	dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
+	dataout = kmalloc(5, GFP_KERNEL);
+
+	if (!dataout)
+		return -ENOMEM;
+	/*baud = (((priv->clk / 35) * baud_base) / 100000); */
+	baud = baud_base;
+
+	if (baud < 1200 || baud > 230400) {
+		kfree(dataout);
+		return IUU_INVALID_PARAMETER;
+	}
+	if (baud > 977) {
+		T1Frekvens = 3;
+		T1FrekvensHZ = 500000;
+	}
+
+	if (baud > 3906) {
+		T1Frekvens = 2;
+		T1FrekvensHZ = 2000000;
+	}
+
+	if (baud > 11718) {
+		T1Frekvens = 1;
+		T1FrekvensHZ = 6000000;
+	}
+
+	if (baud > 46875) {
+		T1Frekvens = 0;
+		T1FrekvensHZ = 24000000;
+	}
+
+	T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
+
+	/*  magic number here:  ENTER_FIRMWARE_UPDATE; */
+	dataout[DataCount++] = IUU_UART_ESC;
+	/*  magic number here:  CHANGE_BAUD; */
+	dataout[DataCount++] = IUU_UART_CHANGE;
+	dataout[DataCount++] = T1Frekvens;
+	dataout[DataCount++] = T1reload;
+
+	*actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
+
+	switch (parity & 0x0F) {
+	case IUU_PARITY_NONE:
+		dataout[DataCount++] = 0x00;
+		break;
+	case IUU_PARITY_EVEN:
+		dataout[DataCount++] = 0x01;
+		break;
+	case IUU_PARITY_ODD:
+		dataout[DataCount++] = 0x02;
+		break;
+	case IUU_PARITY_MARK:
+		dataout[DataCount++] = 0x03;
+		break;
+	case IUU_PARITY_SPACE:
+		dataout[DataCount++] = 0x04;
+		break;
+	default:
+		kfree(dataout);
+		return IUU_INVALID_PARAMETER;
+	}
+
+	switch (parity & 0xF0) {
+	case IUU_ONE_STOP_BIT:
+		dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
+		break;
+
+	case IUU_TWO_STOP_BITS:
+		dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
+		break;
+	default:
+		kfree(dataout);
+		return IUU_INVALID_PARAMETER;
+	}
+
+	status = bulk_immediate(port, dataout, DataCount);
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
+	kfree(dataout);
+	return status;
+}
+
+static void iuu_set_termios(struct tty_struct *tty,
+			    struct usb_serial_port *port,
+			    const struct ktermios *old_termios)
+{
+	const u32 supported_mask = CMSPAR|PARENB|PARODD;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned int cflag = tty->termios.c_cflag;
+	int status;
+	u32 actual;
+	u32 parity;
+	int csize = CS7;
+	int baud;
+	u32 newval = cflag & supported_mask;
+
+	/* Just use the ospeed. ispeed should be the same. */
+	baud = tty->termios.c_ospeed;
+
+	dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
+
+	/* compute the parity parameter */
+	parity = 0;
+	if (cflag & CMSPAR) {	/* Using mark space */
+		if (cflag & PARODD)
+			parity |= IUU_PARITY_SPACE;
+		else
+			parity |= IUU_PARITY_MARK;
+	} else if (!(cflag & PARENB)) {
+		parity |= IUU_PARITY_NONE;
+		csize = CS8;
+	} else if (cflag & PARODD)
+		parity |= IUU_PARITY_ODD;
+	else
+		parity |= IUU_PARITY_EVEN;
+
+	parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
+
+	/* set it */
+	status = iuu_uart_baud(port,
+			baud * priv->boost / 100,
+			&actual, parity);
+
+	/* set the termios value to the real one, so the user now what has
+	 * changed. We support few fields so its easies to copy the old hw
+	 * settings back over and then adjust them
+	 */
+	if (old_termios)
+		tty_termios_copy_hw(&tty->termios, old_termios);
+	if (status != 0)	/* Set failed - return old bits */
+		return;
+	/* Re-encode speed, parity and csize */
+	tty_encode_baud_rate(tty, baud, baud);
+	tty->termios.c_cflag &= ~(supported_mask|CSIZE);
+	tty->termios.c_cflag |= newval | csize;
+}
+
+static void iuu_close(struct usb_serial_port *port)
+{
+	/* iuu_led (port,255,0,0,0); */
+
+	iuu_uart_off(port);
+
+	usb_kill_urb(port->write_urb);
+	usb_kill_urb(port->read_urb);
+
+	iuu_led(port, 0, 0, 0xF000, 0xFF);
+}
+
+static void iuu_init_termios(struct tty_struct *tty)
+{
+	tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL;
+	tty->termios.c_ispeed = 9600;
+	tty->termios.c_ospeed = 9600;
+	tty->termios.c_lflag = 0;
+	tty->termios.c_oflag = 0;
+	tty->termios.c_iflag = 0;
+}
+
+static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+	struct usb_serial *serial = port->serial;
+	struct device *dev = &port->dev;
+	int result;
+	int baud;
+	u32 actual;
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+
+	baud = tty->termios.c_ospeed;
+
+	dev_dbg(dev, "%s - baud %d\n", __func__, baud);
+	usb_clear_halt(serial->dev, port->write_urb->pipe);
+	usb_clear_halt(serial->dev, port->read_urb->pipe);
+
+	priv->poll = 0;
+
+#define SOUP(a, b, c, d)  do { \
+	result = usb_control_msg(port->serial->dev,	\
+				usb_sndctrlpipe(port->serial->dev, 0),	\
+				b, a, c, d, NULL, 0, 1000); \
+	dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x  %d\n", a, b, c, d, result); } while (0)
+
+	/*  This is not UART related but IUU USB driver related or something */
+	/*  like that. Basically no IUU will accept any commands from the USB */
+	/*  host unless it has received the following message */
+	/* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
+
+	SOUP(0x03, 0x02, 0x02, 0x0);
+
+	iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
+	iuu_uart_on(port);
+	if (boost < 100)
+		boost = 100;
+	priv->boost = boost;
+	switch (clockmode) {
+	case 2:		/*  3.680 Mhz */
+		priv->clk = IUU_CLK_3680000;
+		iuu_clk(port, IUU_CLK_3680000 * boost / 100);
+		result =
+		    iuu_uart_baud(port, baud * boost / 100, &actual,
+				  IUU_PARITY_EVEN);
+		break;
+	case 3:		/*  6.00 Mhz */
+		iuu_clk(port, IUU_CLK_6000000 * boost / 100);
+		priv->clk = IUU_CLK_6000000;
+		/* Ratio of 6000000 to 3500000 for baud 9600 */
+		result =
+		    iuu_uart_baud(port, 16457 * boost / 100, &actual,
+				  IUU_PARITY_EVEN);
+		break;
+	default:		/*  3.579 Mhz */
+		iuu_clk(port, IUU_CLK_3579000 * boost / 100);
+		priv->clk = IUU_CLK_3579000;
+		result =
+		    iuu_uart_baud(port, baud * boost / 100, &actual,
+				  IUU_PARITY_EVEN);
+	}
+
+	/* set the cardin cardout signals */
+	switch (cdmode) {
+	case 0:
+		iuu_cardin = 0;
+		iuu_cardout = 0;
+		break;
+	case 1:
+		iuu_cardin = TIOCM_CD;
+		iuu_cardout =  0;
+		break;
+	case 2:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_CD;
+		break;
+	case 3:
+		iuu_cardin = TIOCM_DSR;
+		iuu_cardout = 0;
+		break;
+	case 4:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_DSR;
+		break;
+	case 5:
+		iuu_cardin = TIOCM_CTS;
+		iuu_cardout = 0;
+		break;
+	case 6:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_CTS;
+		break;
+	case 7:
+		iuu_cardin = TIOCM_RNG;
+		iuu_cardout = 0;
+		break;
+	case 8:
+		iuu_cardin = 0;
+		iuu_cardout = TIOCM_RNG;
+	}
+
+	iuu_uart_flush(port);
+
+	dev_dbg(dev, "%s - initialization done\n", __func__);
+
+	memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
+	usb_fill_bulk_urb(port->write_urb, port->serial->dev,
+			  usb_sndbulkpipe(port->serial->dev,
+					  port->bulk_out_endpointAddress),
+			  port->write_urb->transfer_buffer, 1,
+			  read_rxcmd_callback, port);
+	result = usb_submit_urb(port->write_urb, GFP_KERNEL);
+	if (result) {
+		dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
+		iuu_close(port);
+	} else {
+		dev_dbg(dev, "%s - rxcmd OK\n", __func__);
+	}
+
+	return result;
+}
+
+/* how to change VCC */
+static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
+{
+	int status;
+	u8 *buf;
+
+	buf = kmalloc(5, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	buf[0] = IUU_SET_VCC;
+	buf[1] = vcc & 0xFF;
+	buf[2] = (vcc >> 8) & 0xFF;
+	buf[3] = (vcc >> 16) & 0xFF;
+	buf[4] = (vcc >> 24) & 0xFF;
+
+	status = bulk_immediate(port, buf, 5);
+	kfree(buf);
+
+	if (status != IUU_OPERATION_OK)
+		dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
+	else
+		dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
+
+	return status;
+}
+
+/*
+ * Sysfs Attributes
+ */
+
+static ssize_t vcc_mode_show(struct device *dev,
+	struct device_attribute *attr, char *buf)
+{
+	struct usb_serial_port *port = to_usb_serial_port(dev);
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+
+	return sprintf(buf, "%d\n", priv->vcc);
+}
+
+static ssize_t vcc_mode_store(struct device *dev,
+	struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct usb_serial_port *port = to_usb_serial_port(dev);
+	struct iuu_private *priv = usb_get_serial_port_data(port);
+	unsigned long v;
+
+	if (kstrtoul(buf, 10, &v)) {
+		dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
+				__func__, buf);
+		goto fail_store_vcc_mode;
+	}
+
+	dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
+
+	if ((v != 3) && (v != 5)) {
+		dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
+	} else {
+		iuu_vcc_set(port, v);
+		priv->vcc = v;
+	}
+fail_store_vcc_mode:
+	return count;
+}
+static DEVICE_ATTR_RW(vcc_mode);
+
+static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
+{
+	return device_create_file(&port->dev, &dev_attr_vcc_mode);
+}
+
+static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
+{
+	device_remove_file(&port->dev, &dev_attr_vcc_mode);
+	return 0;
+}
+
+/*
+ * End Sysfs Attributes
+ */
+
+static struct usb_serial_driver iuu_device = {
+	.driver = {
+		   .owner = THIS_MODULE,
+		   .name = "iuu_phoenix",
+		   },
+	.id_table = id_table,
+	.num_ports = 1,
+	.num_bulk_in = 1,
+	.num_bulk_out = 1,
+	.bulk_in_size = 512,
+	.bulk_out_size = 512,
+	.open = iuu_open,
+	.close = iuu_close,
+	.write = iuu_uart_write,
+	.read_bulk_callback = iuu_uart_read_callback,
+	.tiocmget = iuu_tiocmget,
+	.tiocmset = iuu_tiocmset,
+	.set_termios = iuu_set_termios,
+	.init_termios = iuu_init_termios,
+	.port_probe = iuu_port_probe,
+	.port_remove = iuu_port_remove,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+	&iuu_device, NULL
+};
+
+module_usb_serial_driver(serial_drivers, id_table);
+
+MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+module_param(xmas, bool, 0644);
+MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
+
+module_param(boost, int, 0644);
+MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
+
+module_param(clockmode, int, 0644);
+MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
+		"3=6 Mhz)");
+
+module_param(cdmode, int, 0644);
+MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
+		 "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
+
+module_param(vcc_default, int, 0644);
+MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
+		"for 5V). Default to 5.");