diff options
Diffstat (limited to 'drivers/usb/serial/whiteheat.c')
| -rw-r--r-- | drivers/usb/serial/whiteheat.c | 1512 |
1 files changed, 1512 insertions, 0 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c new file mode 100644 index 00000000000..cf3bc30675a --- /dev/null +++ b/drivers/usb/serial/whiteheat.c @@ -0,0 +1,1512 @@ +/* + * USB ConnectTech WhiteHEAT driver + * + * Copyright (C) 2002 + * Connect Tech Inc. + * + * Copyright (C) 1999 - 2001 + * Greg Kroah-Hartman (greg@kroah.com) + * + * 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. + * + * See Documentation/usb/usb-serial.txt for more information on using this driver + * + * (10/09/2002) Stuart MacDonald (stuartm@connecttech.com) + * Upgrade to full working driver + * + * (05/30/2001) gkh + * switched from using spinlock to a semaphore, which fixes lots of problems. + * + * (04/08/2001) gb + * Identify version on module load. + * + * 2001_Mar_19 gkh + * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more + * than once, and the got the proper usb_device_id table entries so + * the driver works again. + * + * (11/01/2000) Adam J. Richter + * usb_device_id table support + * + * (10/05/2000) gkh + * Fixed bug with urb->dev not being set properly, now that the usb + * core needs it. + * + * (10/03/2000) smd + * firmware is improved to guard against crap sent to device + * firmware now replies CMD_FAILURE on bad things + * read_callback fix you provided for private info struct + * command_finished now indicates success or fail + * setup_port struct now packed to avoid gcc padding + * firmware uses 1 based port numbering, driver now handles that + * + * (09/11/2000) gkh + * Removed DEBUG #ifdefs with call to usb_serial_debug_data + * + * (07/19/2000) gkh + * Added module_init and module_exit functions to handle the fact that this + * driver is a loadable module now. + * Fixed bug with port->minor that was found by Al Borchers + * + * (07/04/2000) gkh + * Added support for port settings. Baud rate can now be changed. Line signals + * are not transferred to and from the tty layer yet, but things seem to be + * working well now. + * + * (05/04/2000) gkh + * First cut at open and close commands. Data can flow through the ports at + * default speeds now. + * + * (03/26/2000) gkh + * Split driver up into device specific pieces. + * + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/tty.h> +#include <linux/tty_driver.h> +#include <linux/tty_flip.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <asm/uaccess.h> +#include <asm/termbits.h> +#include <linux/usb.h> +#include <linux/serial_reg.h> +#include <linux/serial.h> +#include "usb-serial.h" +#include "whiteheat_fw.h" /* firmware for the ConnectTech WhiteHEAT device */ +#include "whiteheat.h" /* WhiteHEAT specific commands */ + +static int debug; + +#ifndef CMSPAR +#define CMSPAR 0 +#endif + +/* + * Version Information + */ +#define DRIVER_VERSION "v2.0" +#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" +#define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" + +#define CONNECT_TECH_VENDOR_ID 0x0710 +#define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 +#define CONNECT_TECH_WHITE_HEAT_ID 0x8001 + +/* + ID tables for whiteheat are unusual, because we want to different + things for different versions of the device. Eventually, this + will be doable from a single table. But, for now, we define two + separate ID tables, and then a third table that combines them + just for the purpose of exporting the autoloading information. +*/ +static struct usb_device_id id_table_std [] = { + { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, + { } /* Terminating entry */ +}; + +static struct usb_device_id id_table_prerenumeration [] = { + { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, + { } /* Terminating entry */ +}; + +static struct usb_device_id id_table_combined [] = { + { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, + { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE (usb, id_table_combined); + +static struct usb_driver whiteheat_driver = { + .owner = THIS_MODULE, + .name = "whiteheat", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table_combined, +}; + +/* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ +static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id); +static int whiteheat_firmware_attach (struct usb_serial *serial); + +/* function prototypes for the Connect Tech WhiteHEAT serial converter */ +static int whiteheat_attach (struct usb_serial *serial); +static void whiteheat_shutdown (struct usb_serial *serial); +static int whiteheat_open (struct usb_serial_port *port, struct file *filp); +static void whiteheat_close (struct usb_serial_port *port, struct file *filp); +static int whiteheat_write (struct usb_serial_port *port, const unsigned char *buf, int count); +static int whiteheat_write_room (struct usb_serial_port *port); +static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); +static void whiteheat_set_termios (struct usb_serial_port *port, struct termios * old); +static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file); +static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); +static void whiteheat_break_ctl (struct usb_serial_port *port, int break_state); +static int whiteheat_chars_in_buffer (struct usb_serial_port *port); +static void whiteheat_throttle (struct usb_serial_port *port); +static void whiteheat_unthrottle (struct usb_serial_port *port); +static void whiteheat_read_callback (struct urb *urb, struct pt_regs *regs); +static void whiteheat_write_callback (struct urb *urb, struct pt_regs *regs); + +static struct usb_serial_device_type whiteheat_fake_device = { + .owner = THIS_MODULE, + .name = "Connect Tech - WhiteHEAT - (prerenumeration)", + .short_name = "whiteheatnofirm", + .id_table = id_table_prerenumeration, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, + .probe = whiteheat_firmware_download, + .attach = whiteheat_firmware_attach, +}; + +static struct usb_serial_device_type whiteheat_device = { + .owner = THIS_MODULE, + .name = "Connect Tech - WhiteHEAT", + .short_name = "whiteheat", + .id_table = id_table_std, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 4, + .attach = whiteheat_attach, + .shutdown = whiteheat_shutdown, + .open = whiteheat_open, + .close = whiteheat_close, + .write = whiteheat_write, + .write_room = whiteheat_write_room, + .ioctl = whiteheat_ioctl, + .set_termios = whiteheat_set_termios, + .break_ctl = whiteheat_break_ctl, + .tiocmget = whiteheat_tiocmget, + .tiocmset = whiteheat_tiocmset, + .chars_in_buffer = whiteheat_chars_in_buffer, + .throttle = whiteheat_throttle, + .unthrottle = whiteheat_unthrottle, + .read_bulk_callback = whiteheat_read_callback, + .write_bulk_callback = whiteheat_write_callback, +}; + + +struct whiteheat_command_private { + spinlock_t lock; + __u8 port_running; + __u8 command_finished; + wait_queue_head_t wait_command; /* for handling sleeping while waiting for a command to finish */ + __u8 result_buffer[64]; +}; + + +#define THROTTLED 0x01 +#define ACTUALLY_THROTTLED 0x02 + +static int urb_pool_size = 8; + +struct whiteheat_urb_wrap { + struct list_head list; + struct urb *urb; +}; + +struct whiteheat_private { + spinlock_t lock; + __u8 flags; + __u8 mcr; + struct list_head rx_urbs_free; + struct list_head rx_urbs_submitted; + struct list_head rx_urb_q; + struct work_struct rx_work; + struct list_head tx_urbs_free; + struct list_head tx_urbs_submitted; +}; + + +/* local function prototypes */ +static int start_command_port(struct usb_serial *serial); +static void stop_command_port(struct usb_serial *serial); +static void command_port_write_callback(struct urb *urb, struct pt_regs *regs); +static void command_port_read_callback(struct urb *urb, struct pt_regs *regs); + +static int start_port_read(struct usb_serial_port *port); +static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, struct list_head *head); +static struct list_head *list_first(struct list_head *head); +static void rx_data_softint(void *private); + +static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize); +static int firm_open(struct usb_serial_port *port); +static int firm_close(struct usb_serial_port *port); +static int firm_setup_port(struct usb_serial_port *port); +static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); +static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); +static int firm_set_break(struct usb_serial_port *port, __u8 onoff); +static int firm_purge(struct usb_serial_port *port, __u8 rxtx); +static int firm_get_dtr_rts(struct usb_serial_port *port); +static int firm_report_tx_done(struct usb_serial_port *port); + + +#define COMMAND_PORT 4 +#define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ +#define COMMAND_TIMEOUT_MS 2000 +#define CLOSING_DELAY (30 * HZ) + + +/***************************************************************************** + * Connect Tech's White Heat prerenumeration driver functions + *****************************************************************************/ + +/* steps to download the firmware to the WhiteHEAT device: + - hold the reset (by writing to the reset bit of the CPUCS register) + - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD + - release the reset (by writing to the CPUCS register) + - download the WH.HEX file for all addresses greater than 0x1b3f using + VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD + - hold the reset + - download the WH.HEX file for all addresses less than 0x1b40 using + VENDOR_REQUEST_ANCHOR_LOAD + - release the reset + - device renumerated itself and comes up as new device id with all + firmware download completed. +*/ +static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id) +{ + int response; + const struct whiteheat_hex_record *record; + + dbg("%s", __FUNCTION__); + + response = ezusb_set_reset (serial, 1); + + record = &whiteheat_loader[0]; + while (record->address != 0xffff) { + response = ezusb_writememory (serial, record->address, + (unsigned char *)record->data, record->data_size, 0xa0); + if (response < 0) { + err("%s - ezusb_writememory failed for loader (%d %04X %p %d)", + __FUNCTION__, response, record->address, record->data, record->data_size); + break; + } + ++record; + } + + response = ezusb_set_reset (serial, 0); + + record = &whiteheat_firmware[0]; + while (record->address < 0x1b40) { + ++record; + } + while (record->address != 0xffff) { + response = ezusb_writememory (serial, record->address, + (unsigned char *)record->data, record->data_size, 0xa3); + if (response < 0) { + err("%s - ezusb_writememory failed for first firmware step (%d %04X %p %d)", + __FUNCTION__, response, record->address, record->data, record->data_size); + break; + } + ++record; + } + + response = ezusb_set_reset (serial, 1); + + record = &whiteheat_firmware[0]; + while (record->address < 0x1b40) { + response = ezusb_writememory (serial, record->address, + (unsigned char *)record->data, record->data_size, 0xa0); + if (response < 0) { + err("%s - ezusb_writememory failed for second firmware step (%d %04X %p %d)", + __FUNCTION__, response, record->address, record->data, record->data_size); + break; + } + ++record; + } + + response = ezusb_set_reset (serial, 0); + + return 0; +} + + +static int whiteheat_firmware_attach (struct usb_serial *serial) +{ + /* We want this device to fail to have a driver assigned to it */ + return 1; +} + + +/***************************************************************************** + * Connect Tech's White Heat serial driver functions + *****************************************************************************/ +static int whiteheat_attach (struct usb_serial *serial) +{ + struct usb_serial_port *command_port; + struct whiteheat_command_private *command_info; + struct usb_serial_port *port; + struct whiteheat_private *info; + struct whiteheat_hw_info *hw_info; + int pipe; + int ret; + int alen; + __u8 *command; + __u8 *result; + int i; + int j; + struct urb *urb; + int buf_size; + struct whiteheat_urb_wrap *wrap; + struct list_head *tmp; + + command_port = serial->port[COMMAND_PORT]; + + pipe = usb_sndbulkpipe (serial->dev, command_port->bulk_out_endpointAddress); + command = kmalloc(2, GFP_KERNEL); + if (!command) + goto no_command_buffer; + command[0] = WHITEHEAT_GET_HW_INFO; + command[1] = 0; + + result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); + if (!result) + goto no_result_buffer; + /* + * When the module is reloaded the firmware is still there and + * the endpoints are still in the usb core unchanged. This is the + * unlinking bug in disguise. Same for the call below. + */ + usb_clear_halt(serial->dev, pipe); + ret = usb_bulk_msg (serial->dev, pipe, command, 2, &alen, COMMAND_TIMEOUT_MS); + if (ret) { + err("%s: Couldn't send command [%d]", serial->type->name, ret); + goto no_firmware; + } else if (alen != sizeof(command)) { + err("%s: Send command incomplete [%d]", serial->type->name, alen); + goto no_firmware; + } + + pipe = usb_rcvbulkpipe (serial->dev, command_port->bulk_in_endpointAddress); + /* See the comment on the usb_clear_halt() above */ + usb_clear_halt(serial->dev, pipe); + ret = usb_bulk_msg (serial->dev, pipe, result, sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); + if (ret) { + err("%s: Couldn't get results [%d]", serial->type->name, ret); + goto no_firmware; + } else if (alen != sizeof(result)) { + err("%s: Get results incomplete [%d]", serial->type->name, alen); + goto no_firmware; + } else if (result[0] != command[0]) { + err("%s: Command failed [%d]", serial->type->name, result[0]); + goto no_firmware; + } + + hw_info = (struct whiteheat_hw_info *)&result[1]; + + info("%s: Driver %s: Firmware v%d.%02d", serial->type->name, + DRIVER_VERSION, hw_info->sw_major_rev, hw_info->sw_minor_rev); + + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + + info = (struct whiteheat_private *)kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); + if (info == NULL) { + err("%s: Out of memory for port structures\n", serial->type->name); + goto no_private; + } + + spin_lock_init(&info->lock); + info->flags = 0; + info->mcr = 0; + INIT_WORK(&info->rx_work, rx_data_softint, port); + + INIT_LIST_HEAD(&info->rx_urbs_free); + INIT_LIST_HEAD(&info->rx_urbs_submitted); + INIT_LIST_HEAD(&info->rx_urb_q); + INIT_LIST_HEAD(&info->tx_urbs_free); + INIT_LIST_HEAD(&info->tx_urbs_submitted); + + for (j = 0; j < urb_pool_size; j++) { + urb = usb_alloc_urb(0, GFP_KERNEL); + if (!urb) { + err("No free urbs available"); + goto no_rx_urb; + } + buf_size = port->read_urb->transfer_buffer_length; + urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); + if (!urb->transfer_buffer) { + err("Couldn't allocate urb buffer"); + goto no_rx_buf; + } + wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); + if (!wrap) { + err("Couldn't allocate urb wrapper"); + goto no_rx_wrap; + } + usb_fill_bulk_urb(urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), + urb->transfer_buffer, buf_size, + whiteheat_read_callback, port); + wrap->urb = urb; + list_add(&wrap->list, &info->rx_urbs_free); + + urb = usb_alloc_urb(0, GFP_KERNEL); + if (!urb) { + err("No free urbs available"); + goto no_tx_urb; + } + buf_size = port->write_urb->transfer_buffer_length; + urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); + if (!urb->transfer_buffer) { + err("Couldn't allocate urb buffer"); + goto no_tx_buf; + } + wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); + if (!wrap) { + err("Couldn't allocate urb wrapper"); + goto no_tx_wrap; + } + usb_fill_bulk_urb(urb, serial->dev, + usb_sndbulkpipe(serial->dev, + port->bulk_out_endpointAddress), + urb->transfer_buffer, buf_size, + whiteheat_write_callback, port); + wrap->urb = urb; + list_add(&wrap->list, &info->tx_urbs_free); + } + + usb_set_serial_port_data(port, info); + } + + command_info = (struct whiteheat_command_private *)kmalloc(sizeof(struct whiteheat_command_private), GFP_KERNEL); + if (command_info == NULL) { + err("%s: Out of memory for port structures\n", serial->type->name); + goto no_command_private; + } + + spin_lock_init(&command_info->lock); + command_info->port_running = 0; + init_waitqueue_head(&command_info->wait_command); + usb_set_serial_port_data(command_port, command_info); + command_port->write_urb->complete = command_port_write_callback; + command_port->read_urb->complete = command_port_read_callback; + kfree(result); + kfree(command); + + return 0; + +no_firmware: + /* Firmware likely not running */ + err("%s: Unable to retrieve firmware version, try replugging\n", serial->type->name); + err("%s: If the firmware is not running (status led not blinking)\n", serial->type->name); + err("%s: please contact support@connecttech.com\n", serial->type->name); + return -ENODEV; + +no_command_private: + for (i = serial->num_ports - 1; i >= 0; i--) { + port = serial->port[i]; + info = usb_get_serial_port_data(port); + for (j = urb_pool_size - 1; j >= 0; j--) { + tmp = list_first(&info->tx_urbs_free); + list_del(tmp); + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + kfree(wrap); +no_tx_wrap: + kfree(urb->transfer_buffer); +no_tx_buf: + usb_free_urb(urb); +no_tx_urb: + tmp = list_first(&info->rx_urbs_free); + list_del(tmp); + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + kfree(wrap); +no_rx_wrap: + kfree(urb->transfer_buffer); +no_rx_buf: + usb_free_urb(urb); +no_rx_urb: + ; + } + kfree(info); +no_private: + ; + } + kfree(result); +no_result_buffer: + kfree(command); +no_command_buffer: + return -ENOMEM; +} + + +static void whiteheat_shutdown (struct usb_serial *serial) +{ + struct usb_serial_port *command_port; + struct usb_serial_port *port; + struct whiteheat_private *info; + struct whiteheat_urb_wrap *wrap; + struct urb *urb; + struct list_head *tmp; + struct list_head *tmp2; + int i; + + dbg("%s", __FUNCTION__); + + /* free up our private data for our command port */ + command_port = serial->port[COMMAND_PORT]; + kfree (usb_get_serial_port_data(command_port)); + + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + info = usb_get_serial_port_data(port); + list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { + list_del(tmp); + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + kfree(wrap); + kfree(urb->transfer_buffer); + usb_free_urb(urb); + } + list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { + list_del(tmp); + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + kfree(wrap); + kfree(urb->transfer_buffer); + usb_free_urb(urb); + } + kfree(info); + } + + return; +} + + +static int whiteheat_open (struct usb_serial_port *port, struct file *filp) +{ + int retval = 0; + struct termios old_term; + + dbg("%s - port %d", __FUNCTION__, port->number); + + retval = start_command_port(port->serial); + if (retval) + goto exit; + + if (port->tty) + port->tty->low_latency = 1; + + /* send an open port command */ + retval = firm_open(port); + if (retval) { + stop_command_port(port->serial); + goto exit; + } + + retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); + if (retval) { + firm_close(port); + stop_command_port(port->serial); + goto exit; + } + + old_term.c_cflag = ~port->tty->termios->c_cflag; + old_term.c_iflag = ~port->tty->termios->c_iflag; + whiteheat_set_termios(port, &old_term); + + /* Work around HCD bugs */ + usb_clear_halt(port->serial->dev, port->read_urb->pipe); + usb_clear_halt(port->serial->dev, port->write_urb->pipe); + + /* Start reading from the device */ + retval = start_port_read(port); + if (retval) { + err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); + firm_close(port); + stop_command_port(port->serial); + goto exit; + } + +exit: + dbg("%s - exit, retval = %d", __FUNCTION__, retval); + return retval; +} + + +static void whiteheat_close(struct usb_serial_port *port, struct file * filp) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct whiteheat_urb_wrap *wrap; + struct urb *urb; + struct list_head *tmp; + struct list_head *tmp2; + unsigned long flags; + + dbg("%s - port %d", __FUNCTION__, port->number); + + /* filp is NULL when called from usb_serial_disconnect */ + if (filp && (tty_hung_up_p(filp))) { + return; + } + + port->tty->closing = 1; + +/* + * Not currently in use; tty_wait_until_sent() calls + * serial_chars_in_buffer() which deadlocks on the second semaphore + * acquisition. This should be fixed at some point. Greg's been + * notified. + if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { + tty_wait_until_sent(port->tty, CLOSING_DELAY); + } +*/ + + if (port->tty->driver->flush_buffer) + port->tty->driver->flush_buffer(port->tty); + tty_ldisc_flush(port->tty); + + firm_report_tx_done(port); + + firm_close(port); + + /* shutdown our bulk reads and writes */ + spin_lock_irqsave(&info->lock, flags); + list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + usb_kill_urb(urb); + list_del(tmp); + list_add(tmp, &info->rx_urbs_free); + } + list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { + list_del(tmp); + list_add(tmp, &info->rx_urbs_free); + } + list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + usb_kill_urb(urb); + list_del(tmp); + list_add(tmp, &info->tx_urbs_free); + } + spin_unlock_irqrestore(&info->lock, flags); + + stop_command_port(port->serial); + + port->tty->closing = 0; +} + + +static int whiteheat_write(struct usb_serial_port *port, const unsigned char *buf, int count) +{ + struct usb_serial *serial = port->serial; + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct whiteheat_urb_wrap *wrap; + struct urb *urb; + int result; + int bytes; + int sent = 0; + unsigned long flags; + struct list_head *tmp; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (count == 0) { + dbg("%s - write request of 0 bytes", __FUNCTION__); + return (0); + } + + while (count) { + spin_lock_irqsave(&info->lock, flags); + if (list_empty(&info->tx_urbs_free)) { + spin_unlock_irqrestore(&info->lock, flags); + break; + } + tmp = list_first(&info->tx_urbs_free); + list_del(tmp); + spin_unlock_irqrestore(&info->lock, flags); + + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + bytes = (count > port->bulk_out_size) ? port->bulk_out_size : count; + memcpy (urb->transfer_buffer, buf + sent, bytes); + + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, bytes, urb->transfer_buffer); + + urb->dev = serial->dev; + urb->transfer_buffer_length = bytes; + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) { + err("%s - failed submitting write urb, error %d", __FUNCTION__, result); + sent = result; + spin_lock_irqsave(&info->lock, flags); + list_add(tmp, &info->tx_urbs_free); + spin_unlock_irqrestore(&info->lock, flags); + break; + } else { + sent += bytes; + count -= bytes; + spin_lock_irqsave(&info->lock, flags); + list_add(tmp, &info->tx_urbs_submitted); + spin_unlock_irqrestore(&info->lock, flags); + } + } + + return sent; +} + + +static int whiteheat_write_room(struct usb_serial_port *port) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct list_head *tmp; + int room = 0; + unsigned long flags; + + dbg("%s - port %d", __FUNCTION__, port->number); + + spin_lock_irqsave(&info->lock, flags); + list_for_each(tmp, &info->tx_urbs_free) + room++; + spin_unlock_irqrestore(&info->lock, flags); + room *= port->bulk_out_size; + + dbg("%s - returns %d", __FUNCTION__, room); + return (room); +} + + +static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + unsigned int modem_signals = 0; + + dbg("%s - port %d", __FUNCTION__, port->number); + + firm_get_dtr_rts(port); + if (info->mcr & UART_MCR_DTR) + modem_signals |= TIOCM_DTR; + if (info->mcr & UART_MCR_RTS) + modem_signals |= TIOCM_RTS; + + return modem_signals; +} + + +static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (set & TIOCM_RTS) + info->mcr |= UART_MCR_RTS; + if (set & TIOCM_DTR) + info->mcr |= UART_MCR_DTR; + + if (clear & TIOCM_RTS) + info->mcr &= ~UART_MCR_RTS; + if (clear & TIOCM_DTR) + info->mcr &= ~UART_MCR_DTR; + + firm_set_dtr(port, info->mcr & UART_MCR_DTR); + firm_set_rts(port, info->mcr & UART_MCR_RTS); + return 0; +} + + +static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +{ + struct serial_struct serstruct; + void __user *user_arg = (void __user *)arg; + + dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); + + switch (cmd) { + case TIOCGSERIAL: + memset(&serstruct, 0, sizeof(serstruct)); + serstruct.type = PORT_16654; + serstruct.line = port->serial->minor; + serstruct.port = port->number; + serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; + serstruct.xmit_fifo_size = port->bulk_out_size; + serstruct.custom_divisor = 0; + serstruct.baud_base = 460800; + serstruct.close_delay = CLOSING_DELAY; + serstruct.closing_wait = CLOSING_DELAY; + + if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) + return -EFAULT; + + break; + + case TIOCSSERIAL: + if (copy_from_user(&serstruct, user_arg, sizeof(serstruct))) + return -EFAULT; + + /* + * For now this is ignored. dip sets the ASYNC_[V]HI flags + * but this isn't used by us at all. Maybe someone somewhere + * will need the custom_divisor setting. + */ + + break; + + default: + break; + } + + return -ENOIOCTLCMD; +} + + +static void whiteheat_set_termios (struct usb_serial_port *port, struct termios *old_termios) +{ + dbg("%s -port %d", __FUNCTION__, port->number); + + if ((!port->tty) || (!port->tty->termios)) { + dbg("%s - no tty structures", __FUNCTION__); + goto exit; + } + + /* check that they really want us to change something */ + if (old_termios) { + if ((port->tty->termios->c_cflag == old_termios->c_cflag) && + (port->tty->termios->c_iflag == old_termios->c_iflag)) { + dbg("%s - nothing to change...", __FUNCTION__); + goto exit; + } + } + + firm_setup_port(port); + +exit: + return; +} + + +static void whiteheat_break_ctl(struct usb_serial_port *port, int break_state) { + firm_set_break(port, break_state); +} + + +static int whiteheat_chars_in_buffer(struct usb_serial_port *port) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct list_head *tmp; + struct whiteheat_urb_wrap *wrap; + int chars = 0; + unsigned long flags; + + dbg("%s - port %d", __FUNCTION__, port->number); + + spin_lock_irqsave(&info->lock, flags); + list_for_each(tmp, &info->tx_urbs_submitted) { + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + chars += wrap->urb->transfer_buffer_length; + } + spin_unlock_irqrestore(&info->lock, flags); + + dbg ("%s - returns %d", __FUNCTION__, chars); + return (chars); +} + + +static void whiteheat_throttle (struct usb_serial_port *port) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + unsigned long flags; + + dbg("%s - port %d", __FUNCTION__, port->number); + + spin_lock_irqsave(&info->lock, flags); + info->flags |= THROTTLED; + spin_unlock_irqrestore(&info->lock, flags); + + return; +} + + +static void whiteheat_unthrottle (struct usb_serial_port *port) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + int actually_throttled; + unsigned long flags; + + dbg("%s - port %d", __FUNCTION__, port->number); + + spin_lock_irqsave(&info->lock, flags); + actually_throttled = info->flags & ACTUALLY_THROTTLED; + info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); + spin_unlock_irqrestore(&info->lock, flags); + + if (actually_throttled) + rx_data_softint(port); + + return; +} + + +/***************************************************************************** + * Connect Tech's White Heat callback routines + *****************************************************************************/ +static void command_port_write_callback (struct urb *urb, struct pt_regs *regs) +{ + dbg("%s", __FUNCTION__); + + if (urb->status) { + dbg ("nonzero urb status: %d", urb->status); + return; + } +} + + +static void command_port_read_callback (struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *command_port = (struct usb_serial_port *)urb->context; + struct whiteheat_command_private *command_info; + unsigned char *data = urb->transfer_buffer; + int result; + unsigned long flags; + + dbg("%s", __FUNCTION__); + + if (urb->status) { + dbg("%s - nonzero urb status: %d", __FUNCTION__, urb->status); + return; + } + + usb_serial_debug_data(debug, &command_port->dev, __FUNCTION__, urb->actual_length, data); + + command_info = usb_get_serial_port_data(command_port); + if (!command_info) { + dbg ("%s - command_info is NULL, exiting.", __FUNCTION__); + return; + } + spin_lock_irqsave(&command_info->lock, flags); + + if (data[0] == WHITEHEAT_CMD_COMPLETE) { + command_info->command_finished = WHITEHEAT_CMD_COMPLETE; + wake_up_interruptible(&command_info->wait_command); + } else if (data[0] == WHITEHEAT_CMD_FAILURE) { + command_info->command_finished = WHITEHEAT_CMD_FAILURE; + wake_up_interruptible(&command_info->wait_command); + } else if (data[0] == WHITEHEAT_EVENT) { + /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ + dbg("%s - event received", __FUNCTION__); + } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { + memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); + command_info->command_finished = WHITEHEAT_CMD_COMPLETE; + wake_up_interruptible(&command_info->wait_command); + } else { + dbg("%s - bad reply from firmware", __FUNCTION__); + } + + /* Continue trying to always read */ + command_port->read_urb->dev = command_port->serial->dev; + result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); + spin_unlock_irqrestore(&command_info->lock, flags); + if (result) + dbg("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); +} + + +static void whiteheat_read_callback(struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct whiteheat_urb_wrap *wrap; + unsigned char *data = urb->transfer_buffer; + struct whiteheat_private *info = usb_get_serial_port_data(port); + + dbg("%s - port %d", __FUNCTION__, port->number); + + spin_lock(&info->lock); + wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); + if (!wrap) { + spin_unlock(&info->lock); + err("%s - Not my urb!", __FUNCTION__); + return; + } + list_del(&wrap->list); + spin_unlock(&info->lock); + + if (urb->status) { + dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); + spin_lock(&info->lock); + list_add(&wrap->list, &info->rx_urbs_free); + spin_unlock(&info->lock); + return; + } + + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); + + spin_lock(&info->lock); + list_add_tail(&wrap->list, &info->rx_urb_q); + if (info->flags & THROTTLED) { + info->flags |= ACTUALLY_THROTTLED; + spin_unlock(&info->lock); + return; + } + spin_unlock(&info->lock); + + schedule_work(&info->rx_work); +} + + +static void whiteheat_write_callback(struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct whiteheat_urb_wrap *wrap; + + dbg("%s - port %d", __FUNCTION__, port->number); + + spin_lock(&info->lock); + wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); + if (!wrap) { + spin_unlock(&info->lock); + err("%s - Not my urb!", __FUNCTION__); + return; + } + list_del(&wrap->list); + list_add(&wrap->list, &info->tx_urbs_free); + spin_unlock(&info->lock); + + if (urb->status) { + dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); + return; + } + + usb_serial_port_softint((void *)port); + + schedule_work(&port->work); +} + + +/***************************************************************************** + * Connect Tech's White Heat firmware interface + *****************************************************************************/ +static int firm_send_command (struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize) +{ + struct usb_serial_port *command_port; + struct whiteheat_command_private *command_info; + struct whiteheat_private *info; + __u8 *transfer_buffer; + int retval = 0; + unsigned long flags; + + dbg("%s - command %d", __FUNCTION__, command); + + command_port = port->serial->port[COMMAND_PORT]; + command_info = usb_get_serial_port_data(command_port); + spin_lock_irqsave(&command_info->lock, flags); + command_info->command_finished = FALSE; + + transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; + transfer_buffer[0] = command; + memcpy (&transfer_buffer[1], data, datasize); + command_port->write_urb->transfer_buffer_length = datasize + 1; + command_port->write_urb->dev = port->serial->dev; + retval = usb_submit_urb (command_port->write_urb, GFP_KERNEL); + if (retval) { + dbg("%s - submit urb failed", __FUNCTION__); + goto exit; + } + spin_unlock_irqrestore(&command_info->lock, flags); + + /* wait for the command to complete */ + wait_event_interruptible_timeout(command_info->wait_command, + (command_info->command_finished != FALSE), COMMAND_TIMEOUT); + + spin_lock_irqsave(&command_info->lock, flags); + + if (command_info->command_finished == FALSE) { + dbg("%s - command timed out.", __FUNCTION__); + retval = -ETIMEDOUT; + goto exit; + } + + if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { + dbg("%s - command failed.", __FUNCTION__); + retval = -EIO; + goto exit; + } + + if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { + dbg("%s - command completed.", __FUNCTION__); + switch (command) { + case WHITEHEAT_GET_DTR_RTS: + info = usb_get_serial_port_data(port); + memcpy(&info->mcr, command_info->result_buffer, sizeof(struct whiteheat_dr_info)); + break; + } + } + +exit: + spin_unlock_irqrestore(&command_info->lock, flags); + return retval; +} + + +static int firm_open(struct usb_serial_port *port) { + struct whiteheat_simple open_command; + + open_command.port = port->number - port->serial->minor + 1; + return firm_send_command(port, WHITEHEAT_OPEN, (__u8 *)&open_command, sizeof(open_command)); +} + + +static int firm_close(struct usb_serial_port *port) { + struct whiteheat_simple close_command; + + close_command.port = port->number - port->serial->minor + 1; + return firm_send_command(port, WHITEHEAT_CLOSE, (__u8 *)&close_command, sizeof(close_command)); +} + + +static int firm_setup_port(struct usb_serial_port *port) { + struct whiteheat_port_settings port_settings; + unsigned int cflag = port->tty->termios->c_cflag; + + port_settings.port = port->number + 1; + + /* get the byte size */ + switch (cflag & CSIZE) { + case CS5: port_settings.bits = 5; break; + case CS6: port_settings.bits = 6; break; + case CS7: port_settings.bits = 7; break; + default: + case CS8: port_settings.bits = 8; break; + } + dbg("%s - data bits = %d", __FUNCTION__, port_settings.bits); + + /* determine the parity */ + if (cflag & PARENB) + if (cflag & CMSPAR) + if (cflag & PARODD) + port_settings.parity = WHITEHEAT_PAR_MARK; + else + port_settings.parity = WHITEHEAT_PAR_SPACE; + else + if (cflag & PARODD) + port_settings.parity = WHITEHEAT_PAR_ODD; + else + port_settings.parity = WHITEHEAT_PAR_EVEN; + else + port_settings.parity = WHITEHEAT_PAR_NONE; + dbg("%s - parity = %c", __FUNCTION__, port_settings.parity); + + /* figure out the stop bits requested */ + if (cflag & CSTOPB) + port_settings.stop = 2; + else + port_settings.stop = 1; + dbg("%s - stop bits = %d", __FUNCTION__, port_settings.stop); + + /* figure out the flow control settings */ + if (cflag & CRTSCTS) + port_settings.hflow = (WHITEHEAT_HFLOW_CTS | WHITEHEAT_HFLOW_RTS); + else + port_settings.hflow = WHITEHEAT_HFLOW_NONE; + dbg("%s - hardware flow control = %s %s %s %s", __FUNCTION__, + (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", + (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", + (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", + (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); + + /* determine software flow control */ + if (I_IXOFF(port->tty)) + port_settings.sflow = WHITEHEAT_SFLOW_RXTX; + else + port_settings.sflow = WHITEHEAT_SFLOW_NONE; + dbg("%s - software flow control = %c", __FUNCTION__, port_settings.sflow); + + port_settings.xon = START_CHAR(port->tty); + port_settings.xoff = STOP_CHAR(port->tty); + dbg("%s - XON = %2x, XOFF = %2x", __FUNCTION__, port_settings.xon, port_settings.xoff); + + /* get the baud rate wanted */ + port_settings.baud = tty_get_baud_rate(port->tty); + dbg("%s - baud rate = %d", __FUNCTION__, port_settings.baud); + + /* handle any settings that aren't specified in the tty structure */ + port_settings.lloop = 0; + + /* now send the message to the device */ + return firm_send_command(port, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings)); +} + + +static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) { + struct whiteheat_set_rdb rts_command; + + rts_command.port = port->number - port->serial->minor + 1; + rts_command.state = onoff; + return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&rts_command, sizeof(rts_command)); +} + + +static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) { + struct whiteheat_set_rdb dtr_command; + + dtr_command.port = port->number - port->serial->minor + 1; + dtr_command.state = onoff; + return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&dtr_command, sizeof(dtr_command)); +} + + +static int firm_set_break(struct usb_serial_port *port, __u8 onoff) { + struct whiteheat_set_rdb break_command; + + break_command.port = port->number - port->serial->minor + 1; + break_command.state = onoff; + return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&break_command, sizeof(break_command)); +} + + +static int firm_purge(struct usb_serial_port *port, __u8 rxtx) { + struct whiteheat_purge purge_command; + + purge_command.port = port->number - port->serial->minor + 1; + purge_command.what = rxtx; + return firm_send_command(port, WHITEHEAT_PURGE, (__u8 *)&purge_command, sizeof(purge_command)); +} + + +static int firm_get_dtr_rts(struct usb_serial_port *port) { + struct whiteheat_simple get_dr_command; + + get_dr_command.port = port->number - port->serial->minor + 1; + return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, (__u8 *)&get_dr_command, sizeof(get_dr_command)); +} + + +static int firm_report_tx_done(struct usb_serial_port *port) { + struct whiteheat_simple close_command; + + close_command.port = port->number - port->serial->minor + 1; + return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, (__u8 *)&close_command, sizeof(close_command)); +} + + +/***************************************************************************** + * Connect Tech's White Heat utility functions + *****************************************************************************/ +static int start_command_port(struct usb_serial *serial) +{ + struct usb_serial_port *command_port; + struct whiteheat_command_private *command_info; + unsigned long flags; + int retval = 0; + + command_port = serial->port[COMMAND_PORT]; + command_info = usb_get_serial_port_data(command_port); + spin_lock_irqsave(&command_info->lock, flags); + if (!command_info->port_running) { + /* Work around HCD bugs */ + usb_clear_halt(serial->dev, command_port->read_urb->pipe); + + command_port->read_urb->dev = serial->dev; + retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); + if (retval) { + err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); + goto exit; + } + } + command_info->port_running++; + +exit: + spin_unlock_irqrestore(&command_info->lock, flags); + return retval; +} + + +static void stop_command_port(struct usb_serial *serial) +{ + struct usb_serial_port *command_port; + struct whiteheat_command_private *command_info; + unsigned long flags; + + command_port = serial->port[COMMAND_PORT]; + command_info = usb_get_serial_port_data(command_port); + spin_lock_irqsave(&command_info->lock, flags); + command_info->port_running--; + if (!command_info->port_running) + usb_kill_urb(command_port->read_urb); + spin_unlock_irqrestore(&command_info->lock, flags); +} + + +static int start_port_read(struct usb_serial_port *port) +{ + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct whiteheat_urb_wrap *wrap; + struct urb *urb; + int retval = 0; + unsigned long flags; + struct list_head *tmp; + struct list_head *tmp2; + + spin_lock_irqsave(&info->lock, flags); + + list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { + list_del(tmp); + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + urb->dev = port->serial->dev; + retval = usb_submit_urb(urb, GFP_KERNEL); + if (retval) { + list_add(tmp, &info->rx_urbs_free); + list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + usb_kill_urb(urb); + list_del(tmp); + list_add(tmp, &info->rx_urbs_free); + } + break; + } + list_add(tmp, &info->rx_urbs_submitted); + } + + spin_unlock_irqrestore(&info->lock, flags); + + return retval; +} + + +static struct whiteheat_urb_wrap *urb_to_wrap(struct urb* urb, struct list_head *head) +{ + struct whiteheat_urb_wrap *wrap; + struct list_head *tmp; + + list_for_each(tmp, head) { + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + if (wrap->urb == urb) + return wrap; + } + + return NULL; +} + + +static struct list_head *list_first(struct list_head *head) +{ + return head->next; +} + + +static void rx_data_softint(void *private) +{ + struct usb_serial_port *port = (struct usb_serial_port *)private; + struct whiteheat_private *info = usb_get_serial_port_data(port); + struct tty_struct *tty = port->tty; + struct whiteheat_urb_wrap *wrap; + struct urb *urb; + unsigned long flags; + struct list_head *tmp; + struct list_head *tmp2; + int result; + int sent = 0; + + spin_lock_irqsave(&info->lock, flags); + if (info->flags & THROTTLED) { + spin_unlock_irqrestore(&info->lock, flags); + return; + } + + list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { + list_del(tmp); + spin_unlock_irqrestore(&info->lock, flags); + + wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); + urb = wrap->urb; + + if (tty && urb->actual_length) { + if (urb->actual_length > TTY_FLIPBUF_SIZE - tty->flip.count) { + spin_lock_irqsave(&info->lock, flags); + list_add(tmp, &info->rx_urb_q); + spin_unlock_irqrestore(&info->lock, flags); + tty_flip_buffer_push(tty); + schedule_work(&info->rx_work); + return; + } + + memcpy(tty->flip.char_buf_ptr, urb->transfer_buffer, urb->actual_length); + tty->flip.char_buf_ptr += urb->actual_length; + tty->flip.count += urb->actual_length; + sent += urb->actual_length; + } + + urb->dev = port->serial->dev; + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) { + err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); + spin_lock_irqsave(&info->lock, flags); + list_add(tmp, &info->rx_urbs_free); + continue; + } + + spin_lock_irqsave(&info->lock, flags); + list_add(tmp, &info->rx_urbs_submitted); + } + spin_unlock_irqrestore(&info->lock, flags); + + if (sent) + tty_flip_buffer_push(tty); +} + + +/***************************************************************************** + * Connect Tech's White Heat module functions + *****************************************************************************/ +static int __init whiteheat_init (void) +{ + int retval; + retval = usb_serial_register(&whiteheat_fake_device); + if (retval) + goto failed_fake_register; + retval = usb_serial_register(&whiteheat_device); + if (retval) + goto failed_device_register; + retval = usb_register(&whiteheat_driver); + if (retval) + goto failed_usb_register; + info(DRIVER_DESC " " DRIVER_VERSION); + return 0; +failed_usb_register: + usb_serial_deregister(&whiteheat_device); +failed_device_register: + usb_serial_deregister(&whiteheat_fake_device); +failed_fake_register: + return retval; +} + + +static void __exit whiteheat_exit (void) +{ + usb_deregister (&whiteheat_driver); + usb_serial_deregister (&whiteheat_fake_device); + usb_serial_deregister (&whiteheat_device); +} + + +module_init(whiteheat_init); +module_exit(whiteheat_exit); + +MODULE_AUTHOR( DRIVER_AUTHOR ); +MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_LICENSE("GPL"); + +module_param(urb_pool_size, int, 0); +MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug enabled or not"); |