Here is a patch for USB IrDA dongles made with the MosChip mcs7780
chipset. I and Judy Fischback have taken Lukasz Stelmach's shiny
0.2alpha.3 release and added in the code for the MIR and FIR speeds.
The patch has been tested on the 2.6.13 kernel.
Please CC any comments directly back to me as I am not subscribed to this
mailing list.
Signed-off-by: Brian Pugh <[EMAIL PROTECTED]>
diff -uprN -X dontdiff linux-2.6.13-vanilla/drivers/net/irda/Kconfig
linux-2.6.13/drivers/net/irda/Kconfig
--- linux-2.6.13-vanilla/drivers/net/irda/Kconfig 2005-08-28
16:41:01.000000000 -0700
+++ linux-2.6.13/drivers/net/irda/Kconfig 2005-09-21 15:41:06.000000000
-0700
@@ -308,6 +308,22 @@ config SIGMATEL_FIR
To compile it as a module, choose M here: the module will be called
stir4200.
+config MCS7780_FIR
+ tristate "MosChip mcs7780 bridge (EXPERIMENTAL)"
+ depends on IRDA && USB && EXPERIMENTAL
+ select CRC32
+ ---help---
+ Say Y here if you want to build support for the MosChip mcs7780
+ USB IrDA FIR bridge device driver.
+
+ USB bridge based on the MosChip mcs7780 don't conform to the
+ IrDA-USB device class specification, and therefore need their
+ own specific driver. Those dongles support SIR, MIR, and FIR
+ (4Mbps) speeds.
+
+ To compile it as a module, choose M here: the module will be called
+ mcs7780.
+
config NSC_FIR
tristate "NSC PC87108/PC87338"
depends on IRDA && ISA_DMA_API
diff -uprN -X dontdiff linux-2.6.13-vanilla/drivers/net/irda/Makefile
linux-2.6.13/drivers/net/irda/Makefile
--- linux-2.6.13-vanilla/drivers/net/irda/Makefile 2005-08-28
16:41:01.000000000 -0700
+++ linux-2.6.13/drivers/net/irda/Makefile 2005-09-21 15:42:39.000000000
-0700
@@ -10,6 +10,7 @@ obj-$(CONFIG_IRPORT_SIR) += irport.o
# FIR drivers
obj-$(CONFIG_USB_IRDA) += irda-usb.o
obj-$(CONFIG_SIGMATEL_FIR) += stir4200.o
+obj-$(CONFIG_MCS7780_FIR) += mcs7780.o
obj-$(CONFIG_NSC_FIR) += nsc-ircc.o
obj-$(CONFIG_WINBOND_FIR) += w83977af_ir.o
obj-$(CONFIG_SA1100_FIR) += sa1100_ir.o
diff -uprN -X dontdiff linux-2.6.13-vanilla/drivers/net/irda/mcs7780.c
linux-2.6.13/drivers/net/irda/mcs7780.c
--- linux-2.6.13-vanilla/drivers/net/irda/mcs7780.c 1969-12-31
16:00:00.000000000 -0800
+++ linux-2.6.13/drivers/net/irda/mcs7780.c 2005-09-21 15:44:19.000000000
-0700
@@ -0,0 +1,1124 @@
+/*****************************************************************************
+*
+* Filename: mcs7780.c
+* Version: 0.3-alpha
+* Description: Irda MosChip USB Dongle Driver
+* Authors: Lukasz Stelmach <[EMAIL PROTECTED]>
+* Brian Pugh <[EMAIL PROTECTED]>
+* Judy Fischbach <[EMAIL PROTECTED]>
+*
+* Based on stir4200 driver, but some things done differently.
+* Based on earlier driver by Paul Stewart <[EMAIL PROTECTED]>
+*
+* Copyright (C) 2000, Roman Weissgaerber <[EMAIL PROTECTED]>
+* Copyright (C) 2001, Dag Brattli <[EMAIL PROTECTED]>
+* Copyright (C) 2001, Jean Tourrilhes <[EMAIL PROTECTED]>
+* Copyright (C) 2004, Stephen Hemminger <[EMAIL PROTECTED]>
+* Copyright (C) 2005, Lukasz Stelmach <[EMAIL PROTECTED]>
+* Copyright (C) 2005, Brian Pugh <[EMAIL PROTECTED]>
+* Copyright (C) 2005, Judy Fischbach <[EMAIL PROTECTED]>
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+*****************************************************************************/
+
+/*
+ * MCS7780 is a simple USB to IrDA bridge by MosChip. It is neither
+ * compatibile with irda-usb nor with stir4200. Although it is quite
+ * similar to the later as far as general idea of operation is concerned.
+ * That is it requires the software to do all the framing job at SIR speeds.
+ * The hardware does take care of the framing at MIR and FIR speeds.
+ * It supports all speeds from 2400 through 4Mbps
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kref.h>
+#include <linux/usb.h>
+#include <linux/device.h>
+#include <asm/byteorder.h>
+#include <asm/uaccess.h>
+#include <net/irda/irda.h>
+#include <net/irda/wrapper.h>
+#include <net/irda/crc.h>
+#include <linux/crc32.h>
+#include <asm/unaligned.h>
+
+#include "mcs7780.h"
+
+#define MCS_VENDOR_ID 0x9710
+#define MCS_PRODUCT_ID 0x7780
+
+static struct usb_device_id mcs_table[] = {
+ /* MosChip Corp., MCS7780 FIR-USB Adapter */
+ {USB_DEVICE(MCS_VENDOR_ID, MCS_PRODUCT_ID)},
+ {},
+};
+
+MODULE_AUTHOR("Brian Pugh <[EMAIL PROTECTED]>");
+MODULE_DESCRIPTION("IrDA-USB Dongle Driver for MosChip MCS7780");
+MODULE_VERSION("0.3alpha");
+MODULE_LICENSE("GPL");
+
+MODULE_DEVICE_TABLE(usb, mcs_table);
+
+static int qos_mtt_bits = 0x07 /* > 1ms */ ;
+module_param(qos_mtt_bits, int, 0);
+MODULE_PARM_DESC(qos_mtt_bits, "Minimum Turn Time");
+
+static int receive_mode = 0x1;
+module_param(receive_mode, int, 0);
+MODULE_PARM_DESC(receive_mode,
+ "Receive mode of the device (1:fast, 0:slow, default:1)");
+
+static int sensitivity = MCS_ENABLE;
+module_param(sensitivity, int, 0444);
+MODULE_PARM_DESC(sensitivity,
+ "Receiver extra sensitivity (1:on, 0:off, default:1).");
+
+static int sir_tweak = MCS_ENABLE;
+module_param(sir_tweak, int, 0444);
+MODULE_PARM_DESC(sir_tweak,
+ "Default pulse width (1:1.6us, 0:3/16 bit, default:1).");
+
+static int transceiver_type = MCS_TSC_VISHAY;
+module_param(transceiver_type, int, 0444);
+MODULE_PARM_DESC(transceiver_type, "IR transceiver type, see mcs7780.h.");
+
+static int xbofs = 3;
+module_param(xbofs, int, 0444);
+MODULE_PARM_DESC(xbofs, "Number of extra BOFs.(default:3)");
+
+struct usb_driver mcs_driver = {
+ .owner = THIS_MODULE,
+ .name = "mcs7780",
+ .probe = mcs_probe,
+ .disconnect = mcs_disconnect,
+ .id_table = mcs_table,
+};
+
+/* speed flag selection by direct addressing.
+addr = (speed >> 8) & 0x0f
+
+0x1 57600 0x2 115200 0x4 1152000 0x5 9600
+0x6 38400 0x9 2400 0xa 576000 0xb 19200
+
+4Mbps (or 2400) must be checked separately. Since it also has
+to be programmed in a different manner that is not a big problem.
+*/
+static __u16 mcs_speed_set[16] = { 0,
+ MCS_SPEED_57600,
+ MCS_SPEED_115200,
+ 0,
+ MCS_SPEED_1152000,
+ MCS_SPEED_9600,
+ MCS_SPEED_38400,
+ 0, 0,
+ MCS_SPEED_2400,
+ MCS_SPEED_576000,
+ MCS_SPEED_19200,
+ 0, 0, 0,
+};
+
+/* checks if t is in range low-high inclusive */
+static int check_range(int t, int low, int hi)
+{
+ if (t >= low && t <= hi)
+ return 1;
+
+ return 0;
+}
+
+/* checks if t is enabled or disabled, if so return true */
+static int check_onoff(int t)
+{
+ switch (t) {
+ case MCS_ENABLE:
+ case MCS_DISABLE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+#define check_range_sensitivity(X) check_onoff(X)
+#define check_range_sir_tweak(X) check_onoff(X)
+#define check_range_receive_mode(X) check_onoff(X)
+#define check_range_transceiver_type(X) \
+ check_range(X, MCS_TSC_VISHAY, MCS_TSC_SHARP)
+
+#define show_set(value) \
+static ssize_t show_##value(struct device *dev, struct device_attribute *attr,\
+ char *buf) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct mcs_cb *mcs = usb_get_intfdata(intf); \
+ \
+ return sprintf(buf, "%d\n", mcs->value); \
+} \
+static ssize_t set_##value(struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct mcs_cb *mcs = usb_get_intfdata(intf); \
+ int temp = simple_strtoul(buf, NULL, 10); \
+ \
+ if (!check_range_##value(temp)) \
+ return -EINVAL; \
+ mcs->value = temp; \
+ return count; \
+} \
+static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
+show_set(transceiver_type);
+show_set(sir_tweak);
+show_set(sensitivity);
+show_set(receive_mode);
+
+
+/* Set given 16 bit register with a 16 bit value. Send control message
+ * to set dongle register. */
+static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val)
+{
+ struct usb_device *dev = mcs->usbdev;
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ,
+ MCS_WR_RTYPE, val, reg, NULL, 0,
+ msecs_to_jiffies(MCS_CTRL_TIMEOUT));
+}
+
+/* Get 16 bit register value. Send contol message to read dongle register. */
+static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val)
+{
+ struct usb_device *dev = mcs->usbdev;
+ int ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ,
+ MCS_RD_RTYPE, 0, reg, val, 2,
+ msecs_to_jiffies(MCS_CTRL_TIMEOUT));
+
+ return ret;
+}
+
+/* Setup a communication between mcs7780 and TFDU chips. It is described
+ * in more detail in the data sheet. The setup sequence puts the the
+ * vishay tranceiver into high speed mode. It will also receive SIR speed
+ * packets but at reduced sensitivity.
+ */
+
+/* 0: OK 1:ERROR */
+static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs)
+{
+ int ret = 0;
+ __u16 rval;
+
+ /* mcs_get_reg should read exactly two bytes from the dongle */
+ ret = mcs_get_reg(mcs, MCS_XCVR_REG, &rval);
+ if (unlikely(ret != 2)) {
+ ret = -EIO;
+ goto error;
+ }
+
+ /* The MCS_XCVR_CONF bit puts the transceiver into configuration
+ * mode. The MCS_MODE0 bit must start out high (1) and then
+ * transition to low and the MCS_STFIR and MCS_MODE1 bits must
+ * be low to put the transceiver into high speed mode.
+ */
+ rval |= (MCS_MODE0 | MCS_XCVR_CONF);
+ rval &= ~MCS_STFIR;
+ rval &= ~MCS_MODE1;
+ ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
+ if (unlikely(ret))
+ goto error;
+
+ rval &= ~MCS_MODE0;
+ ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
+ if (unlikely(ret))
+ goto error;
+
+ rval &= ~MCS_XCVR_CONF;
+ ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
+ if (unlikely(ret))
+ goto error;
+
+ ret = 0;
+ error:
+ return ret;
+}
+
+/* Setup a communication between mcs7780 and agilent chip. */
+static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs)
+{
+ warn("This transceiver type is not supported yet.");
+ return 1;
+}
+
+/* Setup a communication between mcs7780 and sharp chip. */
+static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs)
+{
+ warn("This transceiver type is not supported yet.");
+ return 1;
+}
+
+/* Common setup for all transceivers */
+static inline int mcs_setup_transceiver(struct mcs_cb *mcs)
+{
+ int ret = 0;
+ __u16 rval;
+ char *msg;
+
+ msg = "Basic transceiver setup error.";
+
+ /* read value of MODE Register, set the DRIVER and RESET bits
+ * and write value back out to MODE Register
+ */
+ ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval);
+ if(unlikely(ret != 2))
+ goto error;
+ rval |= MCS_DRIVER; /* put the mcs7780 into configuration mode. */
+ ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
+ if(unlikely(ret))
+ goto error;
+
+ rval = 0; /* set min pulse width to 0 initially. */
+ ret = mcs_set_reg(mcs, MCS_MINRXPW_REG, rval);
+ if(unlikely(ret))
+ goto error;
+
+ ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval);
+ if(unlikely(ret != 2))
+ goto error;
+
+ rval &= ~MCS_FIR; /* turn off fir mode. */
+ if(mcs->sir_tweak)
+ rval |= MCS_SIR16US; /* 1.6us pulse width */
+ else
+ rval &= ~MCS_SIR16US; /* 3/16 bit time pulse width */
+
+ /* make sure ask mode and back to back packets are off. */
+ rval &= ~(MCS_BBTG | MCS_ASK);
+
+ rval &= ~MCS_SPEED_MASK;
+ rval |= MCS_SPEED_9600; /* make sure initial speed is 9600. */
+ mcs->speed = 9600;
+ mcs->new_speed = 0; /* new_speed is set to 0 */
+ rval &= ~MCS_PLLPWDN; /* disable power down. */
+
+ /* make sure device determines direction and that the auto send sip
+ * pulse are on.
+ */
+ rval |= MCS_DTD | MCS_SIPEN;
+
+ ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
+ if(unlikely(ret))
+ goto error;
+
+ msg = "transceiver model specific setup error.";
+ switch (mcs->transceiver_type) {
+ case MCS_TSC_VISHAY:
+ ret = mcs_setup_transceiver_vishay(mcs);
+ break;
+
+ case MCS_TSC_SHARP:
+ ret = mcs_setup_transceiver_sharp(mcs);
+ break;
+
+ case MCS_TSC_AGILENT:
+ ret = mcs_setup_transceiver_agilent(mcs);
+ break;
+
+ default:
+ warn("Unknown transceiver type: %d", mcs->transceiver_type);
+ ret = 1;
+ }
+ if (unlikely(ret))
+ goto error;
+
+ /* If transceiver is not SHARP, then if receive mode set
+ * on the RXFAST bit in the XCVR Register otherwise unset it
+ */
+ if (mcs->transceiver_type != MCS_TSC_SHARP) {
+
+ ret = mcs_get_reg(mcs, MCS_XCVR_REG, &rval);
+ if (unlikely(ret != 2))
+ goto error;
+ if (mcs->receive_mode)
+ rval |= MCS_RXFAST;
+ else
+ rval &= ~MCS_RXFAST;
+ ret = mcs_set_reg(mcs, MCS_XCVR_REG, rval);
+ if (unlikely(ret))
+ goto error;
+ }
+
+ msg = "transceiver reset.";
+
+ ret = mcs_get_reg(mcs, MCS_MODE_REG, &rval);
+ if (unlikely(ret != 2))
+ goto error;
+
+ /* reset the mcs7780 so all changes take effect. */
+ rval &= ~MCS_RESET;
+ ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
+ if (unlikely(ret))
+ goto error;
+ else
+ return ret;
+
+error:
+ err("%s", msg);
+ return ret;
+}
+
+/* Wraps the data in format for SIR */
+static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf)
+{
+ int wraplen;
+
+ /* 2: full frame length, including "the length" */
+ wraplen = async_wrap_skb(skb, buf + 2, 4094);
+
+ wraplen += 2;
+ buf[0] = wraplen & 0xff;
+ buf[1] = (wraplen >> 8) & 0xff;
+
+ return wraplen;
+}
+
+/* Wraps the data in format for FIR */
+static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf)
+{
+ unsigned int len = 0;
+ __u32 fcs = ~(crc32_le(~0, skb->data, skb->len));
+
+ /* add 2 bytes for length value and 4 bytes for fcs. */
+ len = skb->len + 6;
+
+ /* The mcs7780 requires that the first two bytes are the packet
+ * length in little endian order. Note: the length value includes
+ * the two bytes for the length value itself.
+ */
+ buf[0] = len & 0xff;
+ buf[1] = (len >> 8) & 0xff;
+ /* copy the data into the tx buffer. */
+ memcpy(buf+2, skb->data, skb->len);
+ /* put the fcs in the last four bytes in little endian order. */
+ buf[len - 4] = fcs & 0xff;
+ buf[len - 3] = (fcs >> 8) & 0xff;
+ buf[len - 2] = (fcs >> 16) & 0xff;
+ buf[len - 1] = (fcs >> 24) & 0xff;
+
+ return len;
+}
+
+/* Wraps the data in format for MIR */
+static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf)
+{
+ __u16 fcs = 0;
+ int len = skb->len + 4;
+
+ fcs = ~(irda_calc_crc16(~fcs, skb->data, skb->len));
+ /* put the total packet length in first. Note: packet length
+ * value includes the two bytes that hold the packet length
+ * itself.
+ */
+ buf[0] = len & 0xff;
+ buf[1] = (len >> 8) & 0xff;
+ /* copy the data */
+ memcpy(buf+2, skb->data, skb->len);
+ /* put the fcs in last two bytes in little endian order. */
+ buf[len - 2] = fcs & 0xff;
+ buf[len - 1] = (fcs >> 8) & 0xff;
+
+ return len;
+}
+
+/* Unwrap received packets at MIR speed. A 16 bit crc_ccitt checksum is
+ * used for the fcs. When performed over the entire packet the result
+ * should be GOOD_FCS = 0xf0b8. Hands the unwrapped data off to the IrDA
+ * layer via a sk_buff.
+ */
+static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len)
+{
+ __u16 fcs;
+ int new_len;
+ struct sk_buff *skb;
+
+ /* Assume that the frames are going to fill a single packet
+ * rather than span multiple packets.
+ */
+
+ new_len = len - 2;
+ if(unlikely(new_len <= 0)) {
+ printk(KERN_INFO "%s short frame length %d\n",
+ mcs->netdev->name, new_len);
+ ++mcs->stats.rx_errors;
+ ++mcs->stats.rx_length_errors;
+ return;
+ }
+ fcs = 0;
+ fcs = irda_calc_crc16(~fcs, buf, len);
+
+ if(fcs != GOOD_FCS) {
+ printk(KERN_INFO "\ncrc error calc 0x%x len %d\n",
+ fcs, new_len);
+ mcs->stats.rx_errors++;
+ mcs->stats.rx_crc_errors++;
+ return;
+ }
+
+ skb = dev_alloc_skb(new_len + 1);
+ if(unlikely(!skb)) {
+ ++mcs->stats.rx_dropped;
+ return;
+ }
+
+ skb_reserve(skb, 1);
+ memcpy(skb->data, buf, new_len);
+ skb_put(skb, new_len);
+ skb->mac.raw = skb->data;
+ skb->protocol = htons(ETH_P_IRDA);
+ skb->dev = mcs->netdev;
+
+ netif_rx(skb);
+
+ mcs->stats.rx_packets++;
+ mcs->stats.rx_bytes += new_len;
+
+ return;
+}
+
+/* Unwrap received packets at FIR speed. A 32 bit crc_ccitt checksum is
+ * used for the fcs. Hands the unwrapped data off to the IrDA
+ * layer via a sk_buff.
+ */
+static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len)
+{
+ __u32 fcs;
+ int new_len;
+ struct sk_buff *skb;
+
+ /* Assume that the frames are going to fill a single packet
+ * rather than span multiple packets. This is most likely a false
+ * assumption.
+ */
+
+ new_len = len - 4;
+ if(unlikely(new_len <= 0)) {
+ printk(KERN_INFO "%s short frame length %d\n",
+ mcs->netdev->name, new_len);
+ ++mcs->stats.rx_errors;
+ ++mcs->stats.rx_length_errors;
+ return;
+ }
+
+ fcs = ~(crc32_le(~0, buf, new_len));
+ if(fcs != le32_to_cpu(get_unaligned((u32 *)(buf+new_len)))) {
+ printk(KERN_INFO "crc error calc 0x%x len %d\n", fcs, new_len);
+ mcs->stats.rx_errors++;
+ mcs->stats.rx_crc_errors++;
+ return;
+ }
+
+ skb = dev_alloc_skb(new_len + 1);
+ if(unlikely(!skb)) {
+ ++mcs->stats.rx_dropped;
+ return;
+ }
+
+ skb_reserve(skb, 1);
+ memcpy(skb->data, buf, new_len);
+ skb_put(skb, new_len);
+ skb->mac.raw = skb->data;
+ skb->protocol = htons(ETH_P_IRDA);
+ skb->dev = mcs->netdev;
+
+ netif_rx(skb);
+
+ mcs->stats.rx_packets++;
+ mcs->stats.rx_bytes += new_len;
+
+ return;
+}
+
+/* Creates device files using sysfs for maintaining data on
+ * transceiver_type, sir_tweak, sensitivity and receive mode
+ */
+static inline void mcs_sysfs_start(struct usb_interface *intf)
+{
+ device_create_file(&intf->dev, &dev_attr_transceiver_type);
+ device_create_file(&intf->dev, &dev_attr_sir_tweak);
+ device_create_file(&intf->dev, &dev_attr_sensitivity);
+ device_create_file(&intf->dev, &dev_attr_receive_mode);
+}
+
+/* Initializes values in moschip control block for transceiver
+ * type, sir_tweak, sensitivity, receive mode and extended beginning
+ * of frames
+ */
+static inline void mcs_set_default_parms(struct mcs_cb *mcs)
+{
+ mcs->transceiver_type = transceiver_type;
+ mcs->sir_tweak = sir_tweak;
+ mcs->sensitivity = sensitivity;
+ mcs->receive_mode = receive_mode;
+ mcs->xbofs = xbofs;
+}
+
+/* Allocates urbs for both receive and transmit.
+ * If alloc fails return error code 0 (fail) otherwise
+ * return error code 1 (success).
+ */
+static inline int mcs_setup_urbs(struct mcs_cb *mcs)
+{
+ mcs->rx_urb = NULL;
+
+ mcs->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!mcs->tx_urb)
+ return 0;
+
+ mcs->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!mcs->rx_urb)
+ return 0;
+
+ return 1;
+}
+
+/* Sets up state to be initially outside frame, gets receive urb,
+ * sets status to successful and then submits the urb to start
+ * receiving the data.
+ */
+static inline int mcs_receive_start(struct mcs_cb *mcs)
+{
+ mcs->rx_buff.in_frame = FALSE;
+ mcs->rx_buff.state = OUTSIDE_FRAME;
+
+ usb_fill_bulk_urb(mcs->rx_urb, mcs->usbdev,
+ usb_rcvbulkpipe(mcs->usbdev, mcs->ep_in),
+ mcs->in_buf, 4096, mcs_receive_irq, mcs);
+
+ mcs->rx_urb->status = 0;
+ return usb_submit_urb(mcs->rx_urb, GFP_KERNEL);
+}
+
+/* Finds the in and out endpoints for the mcs control block */
+static inline int mcs_find_endpoints(struct mcs_cb *mcs,
+ struct usb_host_endpoint *ep, int epnum)
+{
+ int i;
+ int ret = 0;
+
+ /* If no place to store the endpoints just return */
+ if (!ep)
+ return ret;
+
+ /* cycle through all endpoints, find the first two that are DIR_IN */
+ for (i = 0; i < epnum; i++) {
+ if (ep[i].desc.bEndpointAddress & USB_DIR_IN)
+ mcs->ep_in = ep[i].desc.bEndpointAddress;
+ else
+ mcs->ep_out = ep[i].desc.bEndpointAddress;
+
+ /* MosChip says that the chip has only two bulk
+ * endpoints. Find one for each direction and move on.
+ */
+ if ((mcs->ep_in != 0) && (mcs->ep_out != 0)) {
+ ret = 1;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+/* Thread which changes the speed of the moschip device */
+static int mcs_speed_thread(void *arg)
+{
+ struct mcs_cb *mcs = arg;
+ struct net_device *netdev = mcs->netdev;
+
+ daemonize("%s", netdev->name);
+ allow_signal(SIGTERM);
+
+ while (netif_running(netdev)
+ && netif_device_present(netdev)
+ && !signal_pending(current)) {
+ wait_event_interruptible(mcs->thr_wait, mcs->new_speed);
+
+ mcs_speed_change(mcs);
+ netif_wake_queue(netdev);
+ }
+
+ info("%s(): exiting", __FUNCTION__);
+ complete_and_exit(&mcs->thr_exit, 0);
+}
+
+/* Function to change the speed of the mcs7780. Fully supports SIR,
+ * MIR, and FIR speeds.
+ */
+static int mcs_speed_change(struct mcs_cb *mcs)
+{
+ int ret = 0;
+ int rst = 0;
+ int cnt = 0;
+ __u16 nspeed;
+ __u16 rval;
+
+ nspeed = mcs_speed_set[(mcs->new_speed >> 8) & 0x0f];
+
+ do {
+ mcs_get_reg(mcs, MCS_RESV_REG, &rval);
+ } while(cnt++ < 100 && (rval & MCS_IRINTX));
+
+ if(cnt >= 100) {
+ warn("unable to change speed");
+ ret = -EIO;
+ goto error;
+ }
+
+ mcs_get_reg(mcs, MCS_MODE_REG, &rval);
+
+ /* MINRXPW values recomended by MosChip */
+ if (mcs->new_speed <= 115200) {
+ rval &= ~MCS_FIR;
+
+ if ((rst = (mcs->speed > 115200)))
+ mcs_set_reg(mcs, MCS_MINRXPW_REG, 0);
+
+ } else if (mcs->new_speed <= 1152000) {
+ rval &= ~MCS_FIR;
+
+ if ((rst = !(mcs->speed == 576000 || mcs->speed == 1152000)))
+ mcs_set_reg(mcs, MCS_MINRXPW_REG, 5);
+
+ } else {
+ rval |= MCS_FIR;
+
+ if ((rst = (mcs->speed != 4000000)))
+ mcs_set_reg(mcs, MCS_MINRXPW_REG, 5);
+
+ }
+
+ rval &= ~MCS_SPEED_MASK;
+ rval |= nspeed;
+
+ ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
+ if (unlikely(ret))
+ goto error;
+
+ if (rst)
+ switch (mcs->transceiver_type) {
+ case MCS_TSC_VISHAY:
+ ret = mcs_setup_transceiver_vishay(mcs);
+ break;
+
+ case MCS_TSC_SHARP:
+ ret = mcs_setup_transceiver_sharp(mcs);
+ break;
+
+ case MCS_TSC_AGILENT:
+ ret = mcs_setup_transceiver_agilent(mcs);
+ break;
+
+ default:
+ ret = 1;
+ warn("Unknown transceiver type: %d",
+ mcs->transceiver_type);
+ }
+ if (unlikely(ret))
+ goto error;
+
+ mcs_get_reg(mcs, MCS_MODE_REG, &rval);
+ rval &= ~MCS_RESET;
+ ret = mcs_set_reg(mcs, MCS_MODE_REG, rval);
+
+ mcs->speed = mcs->new_speed;
+ error:
+ mcs->new_speed = 0;
+ return ret;
+}
+
+/* Ioctl calls not supported at this time. Can be an area of future work. */
+static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
+{
+ /* struct if_irda_req *irq = (struct if_irda_req *)rq; */
+ /* struct mcs_cb *mcs = netdev_priv(netdev); */
+ int ret = 0;
+
+ switch (cmd) {
+ default:
+ ret = -EOPNOTSUPP;
+ }
+
+ return ret;
+}
+
+/* Network device is taken down, done by "ifconfig irda0 down" */
+static int mcs_net_close(struct net_device *netdev)
+{
+ int ret = 0;
+ struct mcs_cb *mcs = netdev_priv(netdev);
+
+ /* Stop transmit processing */
+ netif_stop_queue(netdev);
+
+ /* Kill transmit thread */
+ kill_proc(mcs->thr_pid, SIGTERM, 1);
+ wait_for_completion(&mcs->thr_exit);
+ kfree_skb(mcs->rx_buff.skb);
+
+ /* kill and free the receive and transmit URBs */
+ usb_kill_urb(mcs->rx_urb);
+ usb_free_urb(mcs->rx_urb);
+ usb_kill_urb(mcs->tx_urb);
+ usb_free_urb(mcs->tx_urb);
+
+ /* Stop and remove instance of IrLAP */
+ if (mcs->irlap)
+ irlap_close(mcs->irlap);
+
+ mcs->irlap = NULL;
+ return ret;
+}
+
+/* Network device is taken up, done by "ifconfig irda0 up" */
+static int mcs_net_open(struct net_device *netdev)
+{
+ struct mcs_cb *mcs = netdev_priv(netdev);
+ char hwname[16];
+ int ret = 0;
+
+ ret = usb_clear_halt(mcs->usbdev,
+ usb_sndbulkpipe(mcs->usbdev, mcs->ep_in));
+ if (ret)
+ goto error1;
+ ret = usb_clear_halt(mcs->usbdev,
+ usb_rcvbulkpipe(mcs->usbdev, mcs->ep_out));
+ if (ret)
+ goto error1;
+
+ ret = mcs_setup_transceiver(mcs);
+ if (ret)
+ goto error1;
+
+ ret = -ENOMEM;
+
+ /* Initialize for SIR/FIR to copy data directly into skb. */
+ mcs->receiving = 0;
+ mcs->rx_buff.truesize = IRDA_SKB_MAX_MTU;
+ mcs->rx_buff.skb = dev_alloc_skb(IRDA_SKB_MAX_MTU);
+ if (!mcs->rx_buff.skb)
+ goto error1;
+
+ skb_reserve(mcs->rx_buff.skb, 1);
+ mcs->rx_buff.head = mcs->rx_buff.skb->data;
+ do_gettimeofday(&mcs->rx_time);
+
+ /*
+ * Now that everything should be initialized properly,
+ * Open new IrLAP layer instance to take care of us...
+ * Note : will send immediately a speed change...
+ */
+ sprintf(hwname, "usb#%d", mcs->usbdev->devnum);
+ mcs->irlap = irlap_open(netdev, &mcs->qos, hwname);
+ if (!mcs->irlap) {
+ err("mcs7780: irlap_open failed");
+ goto error2;
+ }
+
+ if (!mcs_setup_urbs(mcs))
+ goto error3;
+
+ ret = mcs_receive_start(mcs);
+ if (ret)
+ goto error3;
+
+ /** Start kernel thread for transmit. */
+ mcs->thr_pid = kernel_thread(mcs_speed_thread, mcs,
+ CLONE_FS | CLONE_FILES);
+ if (mcs->thr_pid < 0) {
+ ret = mcs->thr_pid;
+ err("mcs7780: unable to start kernel thread");
+ goto error3;
+ }
+
+ netif_start_queue(netdev);
+ return 0;
+
+ error3:
+ irlap_close(mcs->irlap);
+ error2:
+ kfree_skb(mcs->rx_buff.skb);
+ error1:
+ return ret;
+}
+
+
+/* Get device stats for /proc/net/dev and ifconfig */
+static struct net_device_stats *mcs_net_get_stats(struct net_device *netdev)
+{
+ struct mcs_cb *mcs = netdev_priv(netdev);
+ return &mcs->stats;
+}
+
+/* Receive callback function. */
+static void mcs_receive_irq(struct urb *urb, struct pt_regs *regs)
+{
+ __u8 *bytes;
+ struct mcs_cb *mcs = urb->context;
+ int i;
+ int ret;
+
+ if (!netif_running(mcs->netdev))
+ return;
+
+ if (urb->status)
+ return;
+
+ if (urb->actual_length > 0) {
+ bytes = urb->transfer_buffer;
+
+ /* MCS returns frames without BOF and EOF
+ * I assume it returns whole frames.
+ */
+ /* SIR speed */
+ if(mcs->speed < 576000) {
+ async_unwrap_char(mcs->netdev, &mcs->stats,
+ &mcs->rx_buff, 0xc0);
+
+ for (i = 0; i < urb->actual_length; i++)
+ async_unwrap_char(mcs->netdev, &mcs->stats,
+ &mcs->rx_buff, bytes[i]);
+
+ async_unwrap_char(mcs->netdev, &mcs->stats,
+ &mcs->rx_buff, 0xc1);
+ }
+ /* MIR speed */
+ else if(mcs->speed == 576000 || mcs->speed == 1152000) {
+ mcs_unwrap_mir(mcs, urb->transfer_buffer,
+ urb->actual_length);
+ }
+ /* FIR speed */
+ else {
+ mcs_unwrap_fir(mcs, urb->transfer_buffer,
+ urb->actual_length);
+ }
+ mcs->netdev->last_rx = jiffies;
+ do_gettimeofday(&mcs->rx_time);
+ }
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+/* Transmit callback funtion. */
+static void mcs_send_irq(struct urb *urb, struct pt_regs *regs)
+{
+ struct mcs_cb *mcs = urb->context;
+ struct net_device *ndev = mcs->netdev;
+
+ if (unlikely(mcs->new_speed))
+ wake_up(&mcs->thr_wait);
+ else
+ netif_wake_queue(ndev);
+}
+
+/* Transmit funtion. Called by the network stack to finally transmit the
+ * packet using the USB dongle.
+ */
+static int mcs_hard_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+ unsigned long flags;
+ struct mcs_cb *mcs;
+ int wraplen;
+ int ret = 0;
+
+
+ if (skb == NULL || ndev == NULL)
+ return -EINVAL;
+
+ netif_stop_queue(ndev);
+ mcs = netdev_priv(ndev);
+
+ spin_lock_irqsave(&mcs->lock, flags);
+
+ mcs->new_speed = irda_get_next_speed(skb);
+ if (likely(mcs->new_speed == mcs->speed))
+ mcs->new_speed = 0;
+
+ /* SIR speed */
+ if(mcs->speed < 576000) {
+ wraplen = mcs_wrap_sir_skb(skb, mcs->out_buf);
+ }
+ /* MIR speed */
+ else if(mcs->speed == 576000 || mcs->speed == 1152000) {
+ wraplen = mcs_wrap_mir_skb(skb, mcs->out_buf);
+ }
+ /* FIR speed */
+ else {
+ wraplen = mcs_wrap_fir_skb(skb, mcs->out_buf);
+ }
+ usb_fill_bulk_urb(mcs->tx_urb, mcs->usbdev,
+ usb_sndbulkpipe(mcs->usbdev, mcs->ep_out),
+ mcs->out_buf, wraplen, mcs_send_irq, mcs);
+
+ if ((ret = usb_submit_urb(mcs->tx_urb, GFP_ATOMIC))) {
+ warn("failed tx_urb: %d", ret);
+ switch (ret) {
+ case -ENODEV:
+ case -EPIPE:
+ break;
+ default:
+ mcs->stats.tx_errors++;
+ netif_start_queue(ndev);
+ }
+ } else {
+ mcs->stats.tx_packets++;
+ mcs->stats.tx_bytes += skb->len;
+ }
+
+ dev_kfree_skb(skb);
+ spin_unlock_irqrestore(&mcs->lock, flags);
+ return ret;
+}
+
+/*
+ * This function is called by the USB subsystem for each new device in the
+ * system. Need to verify the device is handled by this driver and if it is,
+ * then start handling it.
+ */
+static int mcs_probe(struct usb_interface *intf, const struct usb_device_id
*id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct net_device *ndev = NULL;
+ struct mcs_cb *mcs;
+ int ret = -ENOMEM;
+
+ ndev = alloc_irdadev(sizeof(*mcs));
+ if (!ndev)
+ goto error1;
+
+ info("MCS7780 USB-IrDA bridge found at %d.", udev->devnum);
+
+ /* what is it realy for? */
+ SET_MODULE_OWNER(ndev);
+ SET_NETDEV_DEV(ndev, &intf->dev);
+
+ ret = usb_reset_configuration(udev);
+ if (ret != 0) {
+ err("mcs7780: usb reset configuration failed");
+ goto error2;
+ }
+
+ mcs = netdev_priv(ndev);
+ mcs->usbdev = udev;
+ mcs->netdev = ndev;
+ spin_lock_init(&mcs->lock);
+
+ /* Initialize QoS for this device */
+ irda_init_max_qos_capabilies(&mcs->qos);
+
+ /* That's the Rx capability. */
+ mcs->qos.baud_rate.bits &=
+ IR_2400 | IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200
+ | IR_576000 | IR_1152000 | (IR_4000000 << 8);
+
+
+ mcs->qos.min_turn_time.bits &= qos_mtt_bits;
+ irda_qos_bits_to_value(&mcs->qos);
+
+ init_completion(&mcs->thr_exit);
+ init_waitqueue_head(&mcs->thr_wait);
+
+ /* Override the network functions we need to use */
+ ndev->hard_start_xmit = mcs_hard_xmit;
+ ndev->open = mcs_net_open;
+ ndev->stop = mcs_net_close;
+ ndev->get_stats = mcs_net_get_stats;
+ ndev->do_ioctl = mcs_net_ioctl;
+
+ if (!intf->cur_altsetting)
+ goto error2;
+
+ ret = mcs_find_endpoints(mcs, intf->cur_altsetting->endpoint,
+ intf->cur_altsetting->desc.bNumEndpoints);
+ if (!ret) {
+ ret = -ENODEV;
+ goto error2;
+ }
+
+ ret = register_netdev(ndev);
+ if (ret != 0)
+ goto error2;
+
+ info("IrDA: Registered MosChip MCS7780 device as %s", ndev->name);
+
+ mcs_set_default_parms(mcs);
+ mcs_sysfs_start(intf);
+
+ usb_set_intfdata(intf, mcs);
+ return 0;
+
+ error2:
+ free_netdev(ndev);
+
+ error1:
+ return ret;
+}
+
+/* The current device is removed, the USB layer tells us to shut down. */
+static void mcs_disconnect(struct usb_interface *intf)
+{
+ struct mcs_cb *mcs = usb_get_intfdata(intf);
+
+ if (!mcs)
+ return;
+
+ unregister_netdev(mcs->netdev);
+ free_netdev(mcs->netdev);
+
+ device_remove_file(&intf->dev, &dev_attr_transceiver_type);
+ device_remove_file(&intf->dev, &dev_attr_sir_tweak);
+ device_remove_file(&intf->dev, &dev_attr_sensitivity);
+ device_remove_file(&intf->dev, &dev_attr_receive_mode);
+
+ usb_set_intfdata(intf, NULL);
+ info("MCS7780 now disconnected.");
+}
+
+/* Module insertion */
+static int __init mcs_init(void)
+{
+ int result;
+
+ /* register this driver with the USB subsystem */
+ result = usb_register(&mcs_driver);
+ if (result)
+ err("usb_register failed. Error number %d", result);
+
+ return result;
+}
+module_init(mcs_init);
+
+/* Module removal */
+static void __exit mcs_exit(void)
+{
+ /* deregister this driver with the USB subsystem */
+ usb_deregister(&mcs_driver);
+}
+module_exit(mcs_exit);
+
diff -uprN -X dontdiff linux-2.6.13-vanilla/drivers/net/irda/mcs7780.h
linux-2.6.13/drivers/net/irda/mcs7780.h
--- linux-2.6.13-vanilla/drivers/net/irda/mcs7780.h 1969-12-31
16:00:00.000000000 -0800
+++ linux-2.6.13/drivers/net/irda/mcs7780.h 2005-09-21 15:44:19.000000000
-0700
@@ -0,0 +1,184 @@
+/*****************************************************************************
+*
+* Filename: mcs7780.h
+* Version: 0.2-alpha
+* Description: Irda MosChip USB Dongle
+* Status: Experimental
+* Authors: Lukasz Stelmach <[EMAIL PROTECTED]>
+* Brian Pugh <[EMAIL PROTECTED]>
+*
+* Copyright (C) 2005, Lukasz Stelmach <[EMAIL PROTECTED]>
+* Copyright (C) 2005, Brian Pugh <[EMAIL PROTECTED]>
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+*****************************************************************************/
+#ifndef _MCS7780_H
+#define _MCS7780_H
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <net/irda/irda.h>
+#include <net/irda/qos.h>
+#include <net/irda/irda_device.h>
+
+#define MCS_ENABLE 1
+#define MCS_DISABLE 0
+
+#define MCS_MODE_SIR 0
+#define MCS_MODE_MIR 1
+#define MCS_MODE_FIR 2
+
+#define MCS_CTRL_TIMEOUT 500
+#define MCS_XMIT_TIMEOUT 500
+/* Possible transceiver types */
+#define MCS_TSC_VISHAY 0 /* Vishay TFD, default choice */
+#define MCS_TSC_AGILENT 1 /* Agilent 3602/3600 */
+#define MCS_TSC_SHARP 2 /* Sharp GP2W1000YP */
+
+/* Requests */
+#define MCS_RD_RTYPE 0xC0
+#define MCS_WR_RTYPE 0x40
+#define MCS_RDREQ 0x0F
+#define MCS_WRREQ 0x0E
+
+/* Register 0x00 */
+#define MCS_MODE_REG 0
+#define MCS_FIR ((__u16)0x0001)
+#define MCS_SIR16US ((__u16)0x0002)
+#define MCS_BBTG ((__u16)0x0004)
+#define MCS_ASK ((__u16)0x0008)
+#define MCS_PARITY ((__u16)0x0010)
+
+/* SIR/MIR speed constants */
+#define MCS_SPEED_SHIFT 5
+#define MCS_SPEED_MASK ((__u16)0x00E0)
+#define MCS_SPEED(x) ((x & MCS_SPEED_MASK) >> MCS_SPEED_SHIFT)
+#define MCS_SPEED_2400 ((0 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
+#define MCS_SPEED_9600 ((1 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
+#define MCS_SPEED_19200 ((2 << MCS_SPEED_SHIFT) &
MCS_SPEED_MASK)
+#define MCS_SPEED_38400 ((3 << MCS_SPEED_SHIFT) &
MCS_SPEED_MASK)
+#define MCS_SPEED_57600 ((4 << MCS_SPEED_SHIFT) &
MCS_SPEED_MASK)
+#define MCS_SPEED_115200 ((5 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
+#define MCS_SPEED_576000 ((6 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
+#define MCS_SPEED_1152000 ((7 << MCS_SPEED_SHIFT) & MCS_SPEED_MASK)
+
+#define MCS_PLLPWDN ((__u16)0x0100)
+#define MCS_DRIVER ((__u16)0x0200)
+#define MCS_DTD ((__u16)0x0400)
+#define MCS_DIR ((__u16)0x0800)
+#define MCS_SIPEN ((__u16)0x1000)
+#define MCS_SENDSIP ((__u16)0x2000)
+#define MCS_CHGDIR ((__u16)0x4000)
+#define MCS_RESET ((__u16)0x8000)
+
+/* Register 0x02 */
+#define MCS_XCVR_REG 2
+#define MCS_MODE0 ((__u16)0x0001)
+#define MCS_STFIR ((__u16)0x0002)
+#define MCS_XCVR_CONF ((__u16)0x0004)
+#define MCS_RXFAST ((__u16)0x0008)
+/* TXCUR [6:4] */
+#define MCS_TXCUR_SHIFT 4
+#define MCS_TXCUR_MASK ((__u16)0x0070)
+#define MCS_TXCUR(x) ((x & MCS_TXCUR_MASK) >> MCS_TXCUR_SHIFT)
+#define MCS_SETTXCUR(x,y) \
+ ((x & ~MCS_TXCUR_MASK) | (y << MCS_TXCUR_SHIFT) & MCS_TXCUR_MASK)
+
+#define MCS_MODE1 ((__u16)0x0080)
+#define MCS_SMODE0 ((__u16)0x0100)
+#define MCS_SMODE1 ((__u16)0x0200)
+#define MCS_INVTX ((__u16)0x0400)
+#define MCS_INVRX ((__u16)0x0800)
+
+#define MCS_MINRXPW_REG 4
+
+#define MCS_RESV_REG 7
+#define MCS_IRINTX ((__u16)0x0001)
+#define MCS_IRINRX ((__u16)0x0002)
+
+struct mcs_cb {
+ struct usb_device *usbdev; /* init: probe_irda */
+ struct net_device *netdev; /* network layer */
+ struct irlap_cb *irlap; /* The link layer we are binded to */
+ struct net_device_stats stats; /* network statistics */
+ struct qos_info qos;
+ unsigned int speed; /* Current speed */
+ unsigned int new_speed; /* new speed */
+
+ wait_queue_head_t thr_wait; /* transmit thread wakeup */
+ struct completion thr_exit;
+ pid_t thr_pid;
+
+ //struct tasklet_struct rx_tl;
+ struct sk_buff *tx_pending;
+ char in_buf[4096]; /* transmit/receive buffer */
+ char out_buf[4096]; /* transmit/receive buffer */
+ __u8 *fifo_status;
+
+ iobuff_t rx_buff; /* receive unwrap state machine */
+ struct timeval rx_time;
+ spinlock_t lock;
+ int receiving;
+
+ __u8 ep_in;
+ __u8 ep_out;
+
+ struct urb *rx_urb;
+ struct urb *tx_urb;
+
+ int transceiver_type;
+ int sir_tweak;
+ int sensitivity;
+ int receive_mode;
+ int xbofs;
+};
+
+static int mcs_set_reg(struct mcs_cb *mcs, __u16 reg, __u16 val);
+static int mcs_get_reg(struct mcs_cb *mcs, __u16 reg, __u16 * val);
+
+static inline int mcs_setup_transceiver_vishay(struct mcs_cb *mcs);
+static inline int mcs_setup_transceiver_agilent(struct mcs_cb *mcs);
+static inline int mcs_setup_transceiver_sharp(struct mcs_cb *mcs);
+static inline int mcs_setup_transceiver(struct mcs_cb *mcs);
+static inline int mcs_wrap_sir_skb(struct sk_buff *skb, __u8 * buf);
+static unsigned mcs_wrap_fir_skb(const struct sk_buff *skb, __u8 *buf);
+static unsigned mcs_wrap_mir_skb(const struct sk_buff *skb, __u8 *buf);
+static void mcs_unwrap_mir(struct mcs_cb *mcs, __u8 *buf, int len);
+static void mcs_unwrap_fir(struct mcs_cb *mcs, __u8 *buf, int len);
+static inline void mcs_sysfs_start(struct usb_interface *intf);
+static inline void mcs_set_default_parms(struct mcs_cb *mcs);
+static inline int mcs_setup_urbs(struct mcs_cb *mcs);
+static inline int mcs_receive_start(struct mcs_cb *mcs);
+static inline int mcs_find_endpoints(struct mcs_cb *mcs,
+ struct usb_host_endpoint *ep, int epnum);
+
+static int mcs_speed_change(struct mcs_cb *mcs);
+
+static int mcs_net_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd);
+static int mcs_net_close(struct net_device *netdev);
+static int mcs_net_open(struct net_device *netdev);
+static struct net_device_stats *mcs_net_get_stats(struct net_device *netdev);
+
+static void mcs_receive_irq(struct urb *urb, struct pt_regs *regs);
+static void mcs_send_irq(struct urb *urb, struct pt_regs *regs);
+static int mcs_hard_xmit(struct sk_buff *skb, struct net_device *netdev);
+
+static int mcs_probe(struct usb_interface *intf,
+ const struct usb_device_id *id);
+static void mcs_disconnect(struct usb_interface *intf);
+
+#endif /* _MCS7780_H */
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