Re: [PATCH] USB and Driver Core patches for 2.6.10

From: Greg KH (greg_at_kroah.com)
Date: 01/08/05

  • Next message: Greg KH: "Re: [PATCH] USB and Driver Core patches for 2.6.10" 
    Date:	Fri, 7 Jan 2005 21:47:43 -0800
To: linux-usb-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org

    ChangeSet 1.1938.446.2, 2004/12/15 14:12:32-08:00, alborchers@steinerpoint.com

    [PATCH] USB: serial driver for TI USB 3410/5052 chips (1/3)

    * New USB serial driver for devices based on the TI USB
      3410 and 5052 chips. (1/3)

    * Changed to use circ_buf.h.

    Signed-off-by: Al Borchers <alborchers@steinerpoint.com>
    Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

     drivers/usb/serial/Kconfig | 10
     drivers/usb/serial/Makefile | 1
     drivers/usb/serial/ti_usb_3410_5052.c | 1839 ++++++++++++++++++++++++++++++++++
     drivers/usb/serial/ti_usb_3410_5052.h | 224 ++++
     4 files changed, 2074 insertions(+)

    diff -Nru a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
    --- a/drivers/usb/serial/Kconfig 2005-01-07 15:51:18 -08:00
    +++ b/drivers/usb/serial/Kconfig 2005-01-07 15:51:18 -08:00
    @@ -380,6 +380,16 @@
             bool "USB Secure Encapsulated Driver - Padded"
             depends on USB_SERIAL_SAFE
     
    +config USB_SERIAL_TI
    + tristate "USB TI 3410/5052 Serial Driver"
    + depends on USB_SERIAL
    + help
    + Say Y here if you want to use the TI USB 3410 or 5052
    + serial devices.
    +
    + To compile this driver as a module, choose M here: the
    + module will be called ti_usb_3410_5052.
    +
     config USB_SERIAL_CYBERJACK
             tristate "USB REINER SCT cyberJack pinpad/e-com chipcard reader (EXPERIMENTAL)"
             depends on USB_SERIAL && EXPERIMENTAL
    diff -Nru a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
    --- a/drivers/usb/serial/Makefile 2005-01-07 15:51:18 -08:00
    +++ b/drivers/usb/serial/Makefile 2005-01-07 15:51:18 -08:00
    @@ -30,6 +30,7 @@
     obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o
     obj-$(CONFIG_USB_SERIAL_PL2303) += pl2303.o
     obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o
    +obj-$(CONFIG_USB_SERIAL_TI) += ti_usb_3410_5052.o
     obj-$(CONFIG_USB_SERIAL_VISOR) += visor.o
     obj-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat.o
     obj-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda.o
    diff -Nru a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
    --- /dev/null Wed Dec 31 16:00:00 196900
    +++ b/drivers/usb/serial/ti_usb_3410_5052.c 2005-01-07 15:51:18 -08:00
    @@ -0,0 +1,1839 @@
    +/* vi: ts=8 sw=8
    + *
    + * TI 3410/5052 USB Serial Driver
    + *
    + * Copyright (C) 2004 Texas Instruments
    + *
    + * This driver is based on the Linux io_ti driver, which is
    + * Copyright (C) 2000-2002 Inside Out Networks
    + * Copyright (C) 2001-2002 Greg Kroah-Hartman
    + *
    + * This program is free software; you can redistribute it and/or modify
    + * it under the terms of the GNU General Public License as published by
    + * the Free Software Foundation; either version 2 of the License, or
    + * (at your option) any later version.
    + *
    + * For questions or problems with this driver, contact Texas Instruments
    + * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
    + * Peter Berger <pberger@brimson.com>.
    + *
    + * This driver needs this hotplug script in /etc/hotplug/usb/ti_usb_3410_5052
    + * or in /etc/hotplug.d/usb/ti_usb_3410_5052.hotplug to set the device
    + * configuration.
    + *
    + * #!/bin/bash
    + *
    + * BOOT_CONFIG=1
    + * ACTIVE_CONFIG=2
    + *
    + * if [[ "$ACTION" != "add" ]]
    + * then
    + * exit
    + * fi
    + *
    + * CONFIG_PATH=/sys${DEVPATH%/?*}/bConfigurationValue
    + *
    + * if [[ 0`cat $CONFIG_PATH` -ne $BOOT_CONFIG ]]
    + * then
    + * exit
    + * fi
    + *
    + * PRODUCT=${PRODUCT%/?*} # delete version
    + * VENDOR_ID=`printf "%d" 0x${PRODUCT%/?*}`
    + * PRODUCT_ID=`printf "%d" 0x${PRODUCT#*?/}`
    + *
    + * PARAM_PATH=/sys/module/ti_usb_3410_5052/parameters
    + *
    + * function scan() {
    + * s=$1
    + * shift
    + * for i
    + * do
    + * if [[ $s -eq $i ]]
    + * then
    + * return 0
    + * fi
    + * done
    + * return 1
    + * }
    + *
    + * IFS=$IFS,
    + *
    + * if (scan $VENDOR_ID 1105 `cat $PARAM_PATH/vendor_3410` &&
    + * scan $PRODUCT_ID 13328 `cat $PARAM_PATH/product_3410`) ||
    + * (scan $VENDOR_ID 1105 `cat $PARAM_PATH/vendor_5052` &&
    + * scan $PRODUCT_ID 20562 20818 20570 20575 `cat $PARAM_PATH/product_5052`)
    + * then
    + * echo $ACTIVE_CONFIG > $CONFIG_PATH
    + * fi
    + */
    +
    +#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 <linux/ioctl.h>
    +#include <linux/serial.h>
    +#include <linux/circ_buf.h>
    +#include <asm/uaccess.h>
    +#include <asm/semaphore.h>
    +#include <linux/usb.h>
    +
    +#include "usb-serial.h"
    +#include "ti_usb_3410_5052.h"
    +#include "ti_fw_3410.h" /* firmware image for 3410 */
    +#include "ti_fw_5052.h" /* firmware image for 5052 */
    +
    +
    +/* Defines */
    +
    +#define TI_DRIVER_VERSION "v0.9"
    +#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
    +#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
    +
    +#define TI_FIRMWARE_BUF_SIZE 16284
    +
    +#define TI_WRITE_BUF_SIZE 1024
    +
    +#define TI_TRANSFER_TIMEOUT 2
    +
    +#define TI_DEFAULT_LOW_LATENCY 0
    +#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
    +
    +/* supported setserial flags */
    +#define TI_SET_SERIAL_FLAGS (ASYNC_LOW_LATENCY)
    +
    +/* read urb states */
    +#define TI_READ_URB_RUNNING 0
    +#define TI_READ_URB_STOPPING 1
    +#define TI_READ_URB_STOPPED 2
    +
    +#define TI_EXTRA_VID_PID_COUNT 5
    +
    +
    +/* Structures */
    +
    +struct ti_port {
    + int tp_is_open;
    + __u8 tp_msr;
    + __u8 tp_lsr;
    + __u8 tp_shadow_mcr;
    + __u8 tp_uart_mode; /* 232 or 485 modes */
    + unsigned int tp_uart_base_addr;
    + int tp_flags;
    + int tp_closing_wait;/* in .01 secs */
    + struct async_icount tp_icount;
    + wait_queue_head_t tp_msr_wait; /* wait for msr change */
    + wait_queue_head_t tp_write_wait;
    + struct ti_device *tp_tdev;
    + struct usb_serial_port *tp_port;
    + spinlock_t tp_lock;
    + int tp_read_urb_state;
    + int tp_write_urb_in_use;
    + struct circ_buf *tp_write_buf;
    +};
    +
    +struct ti_device {
    + struct semaphore td_open_close_sem;
    + int td_open_port_count;
    + struct usb_serial *td_serial;
    + int td_is_3410;
    + int td_urb_error;
    +};
    +
    +
    +/* Function Declarations */
    +
    +static int ti_startup(struct usb_serial *serial);
    +static void ti_shutdown(struct usb_serial *serial);
    +static int ti_open(struct usb_serial_port *port, struct file *file);
    +static void ti_close(struct usb_serial_port *port, struct file *file);
    +static int ti_write(struct usb_serial_port *port, const unsigned char *data,
    + int count);
    +static int ti_write_room(struct usb_serial_port *port);
    +static int ti_chars_in_buffer(struct usb_serial_port *port);
    +static void ti_throttle(struct usb_serial_port *port);
    +static void ti_unthrottle(struct usb_serial_port *port);
    +static int ti_ioctl(struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
    +static void ti_set_termios(struct usb_serial_port *port,
    + struct termios *old_termios);
    +static int ti_tiocmget(struct usb_serial_port *port, struct file *file);
    +static int ti_tiocmset(struct usb_serial_port *port, struct file *file,
    + unsigned int set, unsigned int clear);
    +static void ti_break(struct usb_serial_port *port, int break_state);
    +static void ti_interrupt_callback(struct urb *urb, struct pt_regs *regs);
    +static void ti_bulk_in_callback(struct urb *urb, struct pt_regs *regs);
    +static void ti_bulk_out_callback(struct urb *urb, struct pt_regs *regs);
    +
    +static void ti_recv(struct device *dev, struct tty_struct *tty,
    + unsigned char *data, int length);
    +static void ti_send(struct ti_port *tport);
    +static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
    +static int ti_get_lsr(struct ti_port *tport);
    +static int ti_get_serial_info(struct ti_port *tport,
    + struct serial_struct __user *ret_arg);
    +static int ti_set_serial_info(struct ti_port *tport,
    + struct serial_struct *new_arg);
    +static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
    +
    +static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
    +
    +static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
    +static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
    +
    +static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
    + __u16 moduleid, __u16 value, __u8 *data, int size);
    +static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
    + __u16 moduleid, __u16 value, __u8 *data, int size);
    +
    +static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
    + __u8 mask, __u8 byte);
    +
    +static int ti_download_firmware(struct ti_device *tdev,
    + unsigned char *firmware, unsigned int firmware_size);
    +
    +/* circular buffer */
    +static struct circ_buf *ti_buf_alloc(void);
    +static inline void ti_buf_free(struct circ_buf *cb);
    +static inline void ti_buf_clear(struct circ_buf *cb);
    +static inline int ti_buf_data_avail(struct circ_buf *cb);
    +static inline int ti_buf_space_avail(struct circ_buf *cb);
    +static int ti_buf_put(struct circ_buf *cb, const char *buf, int count);
    +static int ti_buf_get(struct circ_buf *cb, char *buf, int count);
    +
    +
    +/* Data */
    +
    +/* module parameters */
    +static int debug;
    +static int low_latency = TI_DEFAULT_LOW_LATENCY;
    +static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
    +static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
    +static int vendor_3410_count;
    +static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
    +static int product_3410_count;
    +static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
    +static int vendor_5052_count;
    +static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
    +static int product_5052_count;
    +
    +/* supported devices */
    +/* the array dimension is the number of default entries plus */
    +/* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
    +/* null entry */
    +static struct usb_device_id ti_id_table_3410[1+TI_EXTRA_VID_PID_COUNT+1] = {
    + { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
    +};
    +
    +static struct usb_device_id ti_id_table_5052[4+TI_EXTRA_VID_PID_COUNT+1] = {
    + { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
    +};
    +
    +static struct usb_device_id ti_id_table_combined[] = {
    + { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
    + { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
    + { }
    +};
    +
    +static struct usb_driver ti_usb_driver = {
    + .owner = THIS_MODULE,
    + .name = "ti_usb_3410_5052",
    + .probe = usb_serial_probe,
    + .disconnect = usb_serial_disconnect,
    + .id_table = ti_id_table_combined,
    +};
    +
    +static struct usb_serial_device_type ti_1port_device = {
    + .owner = THIS_MODULE,
    + .name = "TI USB 3410 1 port adapter",
    + .id_table = ti_id_table_3410,
    + .num_interrupt_in = 1,
    + .num_bulk_in = 1,
    + .num_bulk_out = 1,
    + .num_ports = 1,
    + .attach = ti_startup,
    + .shutdown = ti_shutdown,
    + .open = ti_open,
    + .close = ti_close,
    + .write = ti_write,
    + .write_room = ti_write_room,
    + .chars_in_buffer = ti_chars_in_buffer,
    + .throttle = ti_throttle,
    + .unthrottle = ti_unthrottle,
    + .ioctl = ti_ioctl,
    + .set_termios = ti_set_termios,
    + .tiocmget = ti_tiocmget,
    + .tiocmset = ti_tiocmset,
    + .break_ctl = ti_break,
    + .read_int_callback = ti_interrupt_callback,
    + .read_bulk_callback = ti_bulk_in_callback,
    + .write_bulk_callback = ti_bulk_out_callback,
    +};
    +
    +static struct usb_serial_device_type ti_2port_device = {
    + .owner = THIS_MODULE,
    + .name = "TI USB 5052 2 port adapter",
    + .id_table = ti_id_table_5052,
    + .num_interrupt_in = 1,
    + .num_bulk_in = 2,
    + .num_bulk_out = 2,
    + .num_ports = 2,
    + .attach = ti_startup,
    + .shutdown = ti_shutdown,
    + .open = ti_open,
    + .close = ti_close,
    + .write = ti_write,
    + .write_room = ti_write_room,
    + .chars_in_buffer = ti_chars_in_buffer,
    + .throttle = ti_throttle,
    + .unthrottle = ti_unthrottle,
    + .ioctl = ti_ioctl,
    + .set_termios = ti_set_termios,
    + .tiocmget = ti_tiocmget,
    + .tiocmset = ti_tiocmset,
    + .break_ctl = ti_break,
    + .read_int_callback = ti_interrupt_callback,
    + .read_bulk_callback = ti_bulk_in_callback,
    + .write_bulk_callback = ti_bulk_out_callback,
    +};
    +
    +
    +/* Module */
    +
    +MODULE_AUTHOR(TI_DRIVER_AUTHOR);
    +MODULE_DESCRIPTION(TI_DRIVER_DESC);
    +MODULE_VERSION(TI_DRIVER_VERSION);
    +MODULE_LICENSE("GPL");
    +
    +module_param(debug, bool, S_IRUGO | S_IWUSR);
    +MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
    +
    +module_param(low_latency, bool, S_IRUGO | S_IWUSR);
    +MODULE_PARM_DESC(low_latency, "TTY low_latency flag, 0=off, 1=on, default is off");
    +
    +module_param(closing_wait, int, S_IRUGO | S_IWUSR);
    +MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain in close, in .01 secs, default is 4000");
    +
    +module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
    +MODULE_PARM_DESC(vendor_3410, "Vendor ids for 3410 based devices, 1-5 short integers");
    +module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
    +MODULE_PARM_DESC(product_3410, "Product ids for 3410 based devices, 1-5 short integers");
    +module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
    +MODULE_PARM_DESC(vendor_5052, "Vendor ids for 5052 based devices, 1-5 short integers");
    +module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
    +MODULE_PARM_DESC(product_5052, "Product ids for 5052 based devices, 1-5 short integers");
    +
    +MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
    +
    +
    +/* Functions */
    +
    +static int __init ti_init(void)
    +{
    + int i,j;
    + int ret;
    +
    +
    + /* insert extra vendor and product ids */
    + j = sizeof(ti_id_table_3410)/sizeof(struct usb_device_id)
    + - TI_EXTRA_VID_PID_COUNT - 1;
    + for (i=0; i<min(vendor_3410_count,product_3410_count); i++,j++) {
    + ti_id_table_3410[j].idVendor = vendor_3410[i];
    + ti_id_table_3410[j].idProduct = product_3410[i];
    + ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
    + }
    + j = sizeof(ti_id_table_5052)/sizeof(struct usb_device_id)
    + - TI_EXTRA_VID_PID_COUNT - 1;
    + for (i=0; i<min(vendor_5052_count,product_5052_count); i++,j++) {
    + ti_id_table_5052[j].idVendor = vendor_5052[i];
    + ti_id_table_5052[j].idProduct = product_5052[i];
    + ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
    + }
    +
    + ret = usb_serial_register(&ti_1port_device);
    + if (ret)
    + goto failed_1port;
    + ret = usb_serial_register(&ti_2port_device);
    + if (ret)
    + goto failed_2port;
    +
    + ret = usb_register(&ti_usb_driver);
    + if (ret)
    + goto failed_usb;
    +
    + info(TI_DRIVER_DESC " " TI_DRIVER_VERSION);
    +
    + return 0;
    +
    +failed_usb:
    + usb_serial_deregister(&ti_2port_device);
    +failed_2port:
    + usb_serial_deregister(&ti_1port_device);
    +failed_1port:
    + return ret;
    +}
    +
    +
    +static void __exit ti_exit(void)
    +{
    + usb_serial_deregister(&ti_1port_device);
    + usb_serial_deregister(&ti_2port_device);
    + usb_deregister(&ti_usb_driver);
    +}
    +
    +
    +module_init(ti_init);
    +module_exit(ti_exit);
    +
    +
    +static int ti_startup(struct usb_serial *serial)
    +{
    + struct ti_device *tdev;
    + struct ti_port *tport;
    + struct usb_device *dev = serial->dev;
    + int status;
    + int i;
    +
    +
    + dbg("%s - product 0x%4X, num configurations %d, configuration value %d", __FUNCTION__, dev->descriptor.idProduct, dev->descriptor.bNumConfigurations, dev->actconfig->desc.bConfigurationValue);
    +
    + /* create device structure */
    + tdev = kmalloc(sizeof(struct ti_device), GFP_KERNEL);
    + if (tdev == NULL) {
    + dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
    + return -ENOMEM;
    + }
    + memset(tdev, 0, sizeof(struct ti_device));
    + sema_init(&tdev->td_open_close_sem, 1);
    + tdev->td_serial = serial;
    + usb_set_serial_data(serial, tdev);
    +
    + /* determine device type */
    + if (usb_match_id(serial->interface, ti_id_table_3410))
    + tdev->td_is_3410 = 1;
    + dbg("%s - device type is %s", __FUNCTION__, tdev->td_is_3410 ? "3410" : "5052");
    +
    + /* if we have only 1 configuration, download firmware */
    + if (dev->descriptor.bNumConfigurations == 1) {
    +
    + if (tdev->td_is_3410)
    + status = ti_download_firmware(tdev, ti_fw_3410,
    + sizeof(ti_fw_3410));
    + else
    + status = ti_download_firmware(tdev, ti_fw_5052,
    + sizeof(ti_fw_5052));
    + if (status)
    + goto free_tdev;
    +
    + /* 3410 must be reset, 5052 resets itself */
    + if (tdev->td_is_3410) {
    + msleep_interruptible(100);
    + usb_reset_device(dev);
    + }
    +
    + status = -ENODEV;
    + goto free_tdev;
    + }
    +
    + /* the second configuration must be set (in sysfs by hotplug script) */
    + if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
    + status = -ENODEV;
    + goto free_tdev;
    + }
    +
    + /* set up port structures */
    + for (i = 0; i < serial->num_ports; ++i) {
    + tport = kmalloc(sizeof(struct ti_port), GFP_KERNEL);
    + if (tport == NULL) {
    + dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
    + status = -ENOMEM;
    + goto free_tports;
    + }
    + memset(tport, 0, sizeof(struct ti_port));
    + spin_lock_init(&tport->tp_lock);
    + tport->tp_uart_base_addr = (i == 0 ? TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
    + tport->tp_flags = low_latency ? ASYNC_LOW_LATENCY : 0;
    + tport->tp_closing_wait = closing_wait;
    + init_waitqueue_head(&tport->tp_msr_wait);
    + init_waitqueue_head(&tport->tp_write_wait);
    + tport->tp_write_buf = ti_buf_alloc();
    + if (tport->tp_write_buf == NULL) {
    + dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
    + kfree(tport);
    + status = -ENOMEM;
    + goto free_tports;
    + }
    + tport->tp_port = serial->port[i];
    + tport->tp_tdev = tdev;
    + usb_set_serial_port_data(serial->port[i], tport);
    + tport->tp_uart_mode = 0; /* default is RS232 */
    + }
    +
    + return 0;
    +
    +free_tports:
    + for (--i; i>=0; --i) {
    + tport = usb_get_serial_port_data(serial->port[i]);
    + ti_buf_free(tport->tp_write_buf);
    + kfree(tport);
    + usb_set_serial_port_data(serial->port[i], NULL);
    + }
    +free_tdev:
    + kfree(tdev);
    + usb_set_serial_data(serial, NULL);
    + return status;
    +}
    +
    +
    +static void ti_shutdown(struct usb_serial *serial)
    +{
    + int i;
    + struct ti_device *tdev = usb_get_serial_data(serial);
    + struct ti_port *tport;
    +
    + dbg("%s", __FUNCTION__);
    +
    + for (i=0; i < serial->num_ports; ++i) {
    + tport = usb_get_serial_port_data(serial->port[i]);
    + if (tport) {
    + ti_buf_free(tport->tp_write_buf);
    + kfree(tport);
    + usb_set_serial_port_data(serial->port[i], NULL);
    + }
    + }
    +
    + if (tdev)
    + kfree(tdev);
    + usb_set_serial_data(serial, NULL);
    +}
    +
    +
    +static int ti_open(struct usb_serial_port *port, struct file *file)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + struct ti_device *tdev;
    + struct usb_device *dev;
    + struct urb *urb;
    + int port_number;
    + int status;
    + __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
    + TI_PIPE_TIMEOUT_ENABLE |
    + (TI_TRANSFER_TIMEOUT << 2));
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return -ENODEV;
    +
    + dev = port->serial->dev;
    + tdev = tport->tp_tdev;
    +
    + /* only one open on any port on a device at a time */
    + if (down_interruptible(&tdev->td_open_close_sem))
    + return -ERESTARTSYS;
    +
    + if (port->tty)
    + port->tty->low_latency =
    + (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0;
    +
    + port_number = port->number - port->serial->minor;
    +
    + memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
    +
    + tport->tp_msr = 0;
    + tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
    +
    + /* start interrupt urb the first time a port is opened on this device */
    + if (tdev->td_open_port_count == 0) {
    + dbg("%s - start interrupt in urb", __FUNCTION__);
    + urb = tdev->td_serial->port[0]->interrupt_in_urb;
    + if (!urb) {
    + dev_err(&port->dev, "%s - no interrupt urb\n", __FUNCTION__);
    + status = -EINVAL;
    + goto up_sem;
    + }
    + urb->complete = ti_interrupt_callback;
    + urb->context = tdev;
    + urb->dev = dev;
    + status = usb_submit_urb(urb, GFP_KERNEL);
    + if (status) {
    + dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __FUNCTION__, status);
    + goto up_sem;
    + }
    + }
    +
    + ti_set_termios(port, NULL);
    +
    + dbg("%s - sending TI_OPEN_PORT", __FUNCTION__);
    + status = ti_command_out_sync(tdev, TI_OPEN_PORT,
    + (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
    + if (status) {
    + dev_err(&port->dev, "%s - cannot send open command, %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    +
    + dbg("%s - sending TI_START_PORT", __FUNCTION__);
    + status = ti_command_out_sync(tdev, TI_START_PORT,
    + (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
    + if (status) {
    + dev_err(&port->dev, "%s - cannot send start command, %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    +
    + dbg("%s - sending TI_PURGE_PORT", __FUNCTION__);
    + status = ti_command_out_sync(tdev, TI_PURGE_PORT,
    + (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
    + if (status) {
    + dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    + status = ti_command_out_sync(tdev, TI_PURGE_PORT,
    + (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
    + if (status) {
    + dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    +
    + /* reset the data toggle on the bulk endpoints to work around bug in
    + * host controllers where things get out of sync some times */
    + usb_clear_halt(dev, port->write_urb->pipe);
    + usb_clear_halt(dev, port->read_urb->pipe);
    +
    + ti_set_termios(port, NULL);
    +
    + dbg("%s - sending TI_OPEN_PORT (2)", __FUNCTION__);
    + status = ti_command_out_sync(tdev, TI_OPEN_PORT,
    + (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
    + if (status) {
    + dev_err(&port->dev, "%s - cannot send open command (2), %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    +
    + dbg("%s - sending TI_START_PORT (2)", __FUNCTION__);
    + status = ti_command_out_sync(tdev, TI_START_PORT,
    + (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
    + if (status) {
    + dev_err(&port->dev, "%s - cannot send start command (2), %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    +
    + /* start read urb */
    + dbg("%s - start read urb", __FUNCTION__);
    + urb = port->read_urb;
    + if (!urb) {
    + dev_err(&port->dev, "%s - no read urb\n", __FUNCTION__);
    + status = -EINVAL;
    + goto unlink_int_urb;
    + }
    + tport->tp_read_urb_state = TI_READ_URB_RUNNING;
    + urb->complete = ti_bulk_in_callback;
    + urb->context = tport;
    + urb->dev = dev;
    + status = usb_submit_urb(urb, GFP_KERNEL);
    + if (status) {
    + dev_err(&port->dev, "%s - submit read urb failed, %d\n", __FUNCTION__, status);
    + goto unlink_int_urb;
    + }
    +
    + tport->tp_is_open = 1;
    + ++tdev->td_open_port_count;
    +
    + goto up_sem;
    +
    +unlink_int_urb:
    + if (tdev->td_open_port_count == 0)
    + usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
    +up_sem:
    + up(&tdev->td_open_close_sem);
    + dbg("%s - exit %d", __FUNCTION__, status);
    + return status;
    +}
    +
    +
    +static void ti_close(struct usb_serial_port *port, struct file *file)
    +{
    + struct ti_device *tdev;
    + struct ti_port *tport;
    + int port_number;
    + int status;
    + int do_up;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + tdev = usb_get_serial_data(port->serial);
    + tport = usb_get_serial_port_data(port);
    + if (tdev == NULL || tport == NULL)
    + return;
    +
    + tport->tp_is_open = 0;
    +
    + ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
    +
    + usb_kill_urb(port->read_urb);
    + usb_kill_urb(port->write_urb);
    + tport->tp_write_urb_in_use = 0;
    +
    + port_number = port->number - port->serial->minor;
    +
    + dbg("%s - sending TI_CLOSE_PORT", __FUNCTION__);
    + status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
    + (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
    + if (status)
    + dev_err(&port->dev, "%s - cannot send close port command, %d\n" , __FUNCTION__, status);
    +
    + /* if down is interrupted, continue anyway */
    + do_up = !down_interruptible(&tdev->td_open_close_sem);
    + --tport->tp_tdev->td_open_port_count;
    + if (tport->tp_tdev->td_open_port_count <= 0) {
    + /* last port is closed, shut down interrupt urb */
    + usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
    + tport->tp_tdev->td_open_port_count = 0;
    + }
    + if (do_up)
    + up(&tdev->td_open_close_sem);
    +
    + dbg("%s - exit", __FUNCTION__);
    +}
    +
    +
    +static int ti_write(struct usb_serial_port *port, const unsigned char *data,
    + int count)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + unsigned long flags;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (count == 0) {
    + dbg("%s - write request of 0 bytes", __FUNCTION__);
    + return 0;
    + }
    +
    + if (tport == NULL || !tport->tp_is_open)
    + return -ENODEV;
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    + count = ti_buf_put(tport->tp_write_buf, data, count);
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +
    + ti_send(tport);
    +
    + return count;
    +}
    +
    +
    +static int ti_write_room(struct usb_serial_port *port)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + int room = 0;
    + unsigned long flags;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return -ENODEV;
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    + room = ti_buf_space_avail(tport->tp_write_buf);
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +
    + dbg("%s - returns %d", __FUNCTION__, room);
    + return room;
    +}
    +
    +
    +static int ti_chars_in_buffer(struct usb_serial_port *port)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + int chars = 0;
    + unsigned long flags;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return -ENODEV;
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    + chars = ti_buf_data_avail(tport->tp_write_buf);
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +
    + dbg("%s - returns %d", __FUNCTION__, chars);
    + return chars;
    +}
    +
    +
    +static void ti_throttle(struct usb_serial_port *port)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + struct tty_struct *tty;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return;
    +
    + tty = port->tty;
    + if (!tty) {
    + dbg("%s - no tty", __FUNCTION__);
    + return;
    + }
    +
    + if (I_IXOFF(tty) || C_CRTSCTS(tty))
    + ti_stop_read(tport, tty);
    +
    +}
    +
    +
    +static void ti_unthrottle(struct usb_serial_port *port)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + struct tty_struct *tty;
    + int status;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return;
    +
    + tty = port->tty;
    + if (!tty) {
    + dbg("%s - no tty", __FUNCTION__);
    + return;
    + }
    +
    + if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
    + status = ti_restart_read(tport, tty);
    + if (status)
    + dev_err(&port->dev, "%s - cannot restart read, %d\n", __FUNCTION__, status);
    + }
    +}
    +
    +
    +static int ti_ioctl(struct usb_serial_port *port, struct file *file,
    + unsigned int cmd, unsigned long arg)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + struct async_icount cnow;
    + struct async_icount cprev;
    +
    + dbg("%s - port %d, cmd = 0x%04X", __FUNCTION__, port->number, cmd);
    +
    + if (tport == NULL)
    + return -ENODEV;
    +
    + switch (cmd) {
    + case TIOCGSERIAL:
    + dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
    + return ti_get_serial_info(tport, (struct serial_struct __user *)arg);
    + break;
    +
    + case TIOCSSERIAL:
    + dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
    + return ti_set_serial_info(tport, (struct serial_struct *)arg);
    + break;
    +
    + case TIOCMIWAIT:
    + dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
    + cprev = tport->tp_icount;
    + while (1) {
    + interruptible_sleep_on(&tport->tp_msr_wait);
    + if (signal_pending(current))
    + return -ERESTARTSYS;
    + cnow = tport->tp_icount;
    + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
    + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
    + return -EIO; /* no change => error */
    + if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
    + ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
    + ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
    + ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
    + return 0;
    + }
    + cprev = cnow;
    + }
    + break;
    +
    + case TIOCGICOUNT:
    + dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, tport->tp_icount.rx, tport->tp_icount.tx);
    + if (copy_to_user((void __user *)arg, &tport->tp_icount, sizeof(tport->tp_icount)))
    + return -EFAULT;
    + return 0;
    + }
    +
    + return -ENOIOCTLCMD;
    +}
    +
    +
    +static void ti_set_termios(struct usb_serial_port *port,
    + struct termios *old_termios)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + struct tty_struct *tty = port->tty;
    + struct ti_uart_config *config;
    + tcflag_t cflag,iflag;
    + int baud;
    + int status;
    + int port_number = port->number - port->serial->minor;
    + unsigned int mcr;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (!tty || !tty->termios) {
    + dbg("%s - no tty or termios", __FUNCTION__);
    + return;
    + }
    +
    + cflag = tty->termios->c_cflag;
    + iflag = tty->termios->c_iflag;
    +
    + if (old_termios && cflag == old_termios->c_cflag
    + && iflag == old_termios->c_iflag) {
    + dbg("%s - nothing to change", __FUNCTION__);
    + return;
    + }
    +
    + dbg("%s - cl*** %08x, iflag %08x", __FUNCTION__, cflag, iflag);
    +
    + if (old_termios)
    + dbg("%s - old cl*** %08x, old iflag %08x", __FUNCTION__, old_termios->c_cflag, old_termios->c_iflag);
    +
    + if (tport == NULL)
    + return;
    +
    + config = kmalloc(sizeof(*config), GFP_KERNEL);
    + if (!config) {
    + dev_err(&port->dev, "%s - out of memory\n", __FUNCTION__);
    + return;
    + }
    +
    + config->wFlags = 0;
    +
    + /* these flags must be set */
    + config->wFlags |= TI_UART_ENABLE_MS_INTS;
    + config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
    + config->bUartMode = (__u8)(tport->tp_uart_mode);
    +
    + switch (cflag & CSIZE) {
    + case CS5:
    + config->bDataBits = TI_UART_5_DATA_BITS;
    + break;
    + case CS6:
    + config->bDataBits = TI_UART_6_DATA_BITS;
    + break;
    + case CS7:
    + config->bDataBits = TI_UART_7_DATA_BITS;
    + break;
    + default:
    + case CS8:
    + config->bDataBits = TI_UART_8_DATA_BITS;
    + break;
    + }
    +
    + if (cflag & PARENB) {
    + if (cflag & PARODD) {
    + config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
    + config->bParity = TI_UART_ODD_PARITY;
    + } else {
    + config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
    + config->bParity = TI_UART_EVEN_PARITY;
    + }
    + } else {
    + config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
    + config->bParity = TI_UART_NO_PARITY;
    + }
    +
    + if (cflag & CSTOPB)
    + config->bStopBits = TI_UART_2_STOP_BITS;
    + else
    + config->bStopBits = TI_UART_1_STOP_BITS;
    +
    + if (cflag & CRTSCTS) {
    + /* RTS flow control must be off to drop RTS for baud rate B0 */
    + if ((cflag & CBAUD) != B0)
    + config->wFlags |= TI_UART_ENABLE_RTS_IN;
    + config->wFlags |= TI_UART_ENABLE_CTS_OUT;
    + } else {
    + tty->hw_stopped = 0;
    + ti_restart_read(tport, tty);
    + }
    +
    + if (I_IXOFF(tty) || I_IXON(tty)) {
    + config->cXon = START_CHAR(tty);
    + config->cXoff = STOP_CHAR(tty);
    +
    + if (I_IXOFF(tty))
    + config->wFlags |= TI_UART_ENABLE_X_IN;
    + else
    + ti_restart_read(tport, tty);
    +
    + if (I_IXON(tty))
    + config->wFlags |= TI_UART_ENABLE_X_OUT;
    + }
    +
    + baud = tty_get_baud_rate(tty);
    + if (!baud) baud = 9600;
    + if (tport->tp_tdev->td_is_3410)
    + config->wBaudRate = (__u16)((923077 + baud/2) / baud);
    + else
    + config->wBaudRate = (__u16)((461538 + baud/2) / baud);
    +
    + dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
    + __FUNCTION__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
    +
    + cpu_to_be16s(&config->wBaudRate);
    + cpu_to_be16s(&config->wFlags);
    +
    + status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
    + (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
    + sizeof(*config));
    + if (status)
    + dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", __FUNCTION__, port_number, status);
    +
    + /* SET_CONFIG asserts RTS and DTR, reset them correctly */
    + mcr = tport->tp_shadow_mcr;
    + /* if baud rate is B0, clear RTS and DTR */
    + if ((cflag & CBAUD) == B0)
    + mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
    + status = ti_set_mcr(tport, mcr);
    + if (status)
    + dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", __FUNCTION__, port_number, status);
    +
    + kfree(config);
    +}
    +
    +
    +static int ti_tiocmget(struct usb_serial_port *port, struct file *file)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + unsigned int result;
    + unsigned int msr;
    + unsigned int mcr;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return -ENODEV;
    +
    + msr = tport->tp_msr;
    + mcr = tport->tp_shadow_mcr;
    +
    + result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
    + | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
    + | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
    + | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
    + | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
    + | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
    + | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
    +
    + dbg("%s - 0x%04X", __FUNCTION__, result);
    +
    + return result;
    +}
    +
    +
    +static int ti_tiocmset(struct usb_serial_port *port, struct file *file,
    + unsigned int set, unsigned int clear)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + unsigned int mcr;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + if (tport == NULL)
    + return -ENODEV;
    +
    + mcr = tport->tp_shadow_mcr;
    +
    + if (set & TIOCM_RTS)
    + mcr |= TI_MCR_RTS;
    + if (set & TIOCM_DTR)
    + mcr |= TI_MCR_DTR;
    + if (set & TIOCM_LOOP)
    + mcr |= TI_MCR_LOOP;
    +
    + if (clear & TIOCM_RTS)
    + mcr &= ~TI_MCR_RTS;
    + if (clear & TIOCM_DTR)
    + mcr &= ~TI_MCR_DTR;
    + if (clear & TIOCM_LOOP)
    + mcr &= ~TI_MCR_LOOP;
    +
    + return ti_set_mcr(tport, mcr);
    +}
    +
    +
    +static void ti_break(struct usb_serial_port *port, int break_state)
    +{
    + struct ti_port *tport = usb_get_serial_port_data(port);
    + int status;
    +
    + dbg("%s - state = %d", __FUNCTION__, break_state);
    +
    + if (tport == NULL)
    + return;
    +
    + ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
    +
    + status = ti_write_byte(tport->tp_tdev,
    + tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
    + TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
    +
    + if (status)
    + dbg("%s - error setting break, %d", __FUNCTION__, status);
    +}
    +
    +
    +static void ti_interrupt_callback(struct urb *urb, struct pt_regs *regs)
    +{
    + struct ti_device *tdev = (struct ti_device *)urb->context;
    + struct usb_serial_port *port;
    + struct usb_serial *serial = tdev->td_serial;
    + struct ti_port *tport;
    + struct device *dev = &urb->dev->dev;
    + unsigned char *data = urb->transfer_buffer;
    + int length = urb->actual_length;
    + int port_number;
    + int function;
    + int status;
    + __u8 msr;
    +
    + dbg("%s", __FUNCTION__);
    +
    + switch (urb->status) {
    + case 0:
    + break;
    + case -ECONNRESET:
    + case -ENOENT:
    + case -ESHUTDOWN:
    + dbg("%s - urb shutting down, %d", __FUNCTION__, urb->status);
    + tdev->td_urb_error = 1;
    + return;
    + default:
    + dev_err(dev, "%s - nonzero urb status, %d\n", __FUNCTION__, urb->status);
    + tdev->td_urb_error = 1;
    + goto exit;
    + }
    +
    + if (length != 2) {
    + dbg("%s - bad packet size, %d", __FUNCTION__, length);
    + goto exit;
    + }
    +
    + if (data[0] == TI_CODE_HARDWARE_ERROR) {
    + dev_err(dev, "%s - hardware error, %d\n", __FUNCTION__, data[1]);
    + goto exit;
    + }
    +
    + port_number = TI_GET_PORT_FROM_CODE(data[0]);
    + function = TI_GET_FUNC_FROM_CODE(data[0]);
    +
    + dbg("%s - port_number %d, function %d, data 0x%02X", __FUNCTION__, port_number, function, data[1]);
    +
    + if (port_number >= serial->num_ports) {
    + dev_err(dev, "%s - bad port number, %d\n", __FUNCTION__, port_number);
    + goto exit;
    + }
    +
    + port = serial->port[port_number];
    +
    + tport = usb_get_serial_port_data(port);
    + if (!tport)
    + goto exit;
    +
    + switch (function) {
    + case TI_CODE_DATA_ERROR:
    + dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", __FUNCTION__, port_number, data[1]);
    + break;
    +
    + case TI_CODE_MODEM_STATUS:
    + msr = data[1];
    + dbg("%s - port %d, msr 0x%02X", __FUNCTION__, port_number, msr);
    + ti_handle_new_msr(tport, msr);
    + break;
    +
    + default:
    + dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", __FUNCTION__, data[1]);
    + break;
    + }
    +
    +exit:
    + status = usb_submit_urb(urb, GFP_ATOMIC);
    + if (status)
    + dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", __FUNCTION__, status);
    +}
    +
    +
    +static void ti_bulk_in_callback(struct urb *urb, struct pt_regs *regs)
    +{
    + struct ti_port *tport = (struct ti_port *)urb->context;
    + struct usb_serial_port *port = tport->tp_port;
    + struct device *dev = &urb->dev->dev;
    + int status = 0;
    +
    + dbg("%s", __FUNCTION__);
    +
    + switch (urb->status) {
    + case 0:
    + break;
    + case -ECONNRESET:
    + case -ENOENT:
    + case -ESHUTDOWN:
    + dbg("%s - urb shutting down, %d", __FUNCTION__, urb->status);
    + tport->tp_tdev->td_urb_error = 1;
    + wake_up_interruptible(&tport->tp_write_wait);
    + return;
    + default:
    + dev_err(dev, "%s - nonzero urb status, %d\n", __FUNCTION__, urb->status );
    + tport->tp_tdev->td_urb_error = 1;
    + wake_up_interruptible(&tport->tp_write_wait);
    + }
    +
    + if (urb->status == -EPIPE)
    + goto exit;
    +
    + if (urb->status) {
    + dev_err(dev, "%s - stopping read!\n", __FUNCTION__);
    + return;
    + }
    +
    + if (port->tty && urb->actual_length) {
    + usb_serial_debug_data(debug, dev, __FUNCTION__,
    + urb->actual_length, urb->transfer_buffer);
    +
    + if (!tport->tp_is_open)
    + dbg("%s - port closed, dropping data", __FUNCTION__);
    + else
    + ti_recv(&urb->dev->dev, port->tty, urb->transfer_buffer,
    + urb->actual_length);
    +
    + spin_lock(&tport->tp_lock);
    + tport->tp_icount.rx += urb->actual_length;
    + spin_unlock(&tport->tp_lock);
    + }
    +
    +exit:
    + /* continue to read unless stopping */
    + spin_lock(&tport->tp_lock);
    + if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
    + urb->dev = port->serial->dev;
    + status = usb_submit_urb(urb, GFP_ATOMIC);
    + } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
    + tport->tp_read_urb_state = TI_READ_URB_STOPPED;
    + }
    + spin_unlock(&tport->tp_lock);
    + if (status)
    + dev_err(dev, "%s - resubmit read urb failed, %d\n", __FUNCTION__, status);
    +}
    +
    +
    +static void ti_bulk_out_callback(struct urb *urb, struct pt_regs *regs)
    +{
    + struct ti_port *tport = (struct ti_port *)urb->context;
    + struct usb_serial_port *port = tport->tp_port;
    + struct device *dev = &urb->dev->dev;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + tport->tp_write_urb_in_use = 0;
    +
    + switch (urb->status) {
    + case 0:
    + break;
    + case -ECONNRESET:
    + case -ENOENT:
    + case -ESHUTDOWN:
    + dbg("%s - urb shutting down, %d", __FUNCTION__, urb->status);
    + tport->tp_tdev->td_urb_error = 1;
    + wake_up_interruptible(&tport->tp_write_wait);
    + return;
    + default:
    + dev_err(dev, "%s - nonzero urb status, %d\n", __FUNCTION__, urb->status);
    + tport->tp_tdev->td_urb_error = 1;
    + wake_up_interruptible(&tport->tp_write_wait);
    + }
    +
    + /* send any buffered data */
    + ti_send(tport);
    +}
    +
    +
    +static void ti_recv(struct device *dev, struct tty_struct *tty,
    + unsigned char *data, int length)
    +{
    + int cnt;
    +
    + do {
    + if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
    + tty_flip_buffer_push(tty);
    + if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
    + dev_err(dev, "%s - dropping data, %d bytes lost\n", __FUNCTION__, length);
    + return;
    + }
    + }
    + cnt = min(length, TTY_FLIPBUF_SIZE - tty->flip.count);
    + memcpy(tty->flip.char_buf_ptr, data, cnt);
    + memset(tty->flip.flag_buf_ptr, 0, cnt);
    + tty->flip.char_buf_ptr += cnt;
    + tty->flip.flag_buf_ptr += cnt;
    + tty->flip.count += cnt;
    + data += cnt;
    + length -= cnt;
    + } while (length > 0);
    +
    + tty_flip_buffer_push(tty);
    +}
    +
    +
    +static void ti_send(struct ti_port *tport)
    +{
    + int count, result;
    + struct usb_serial_port *port = tport->tp_port;
    + struct tty_struct *tty = port->tty;
    + unsigned long flags;
    +
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    +
    + if (tport->tp_write_urb_in_use) {
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    + return;
    + }
    +
    + count = ti_buf_get(tport->tp_write_buf,
    + port->write_urb->transfer_buffer,
    + port->bulk_out_size);
    +
    + if (count == 0) {
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    + return;
    + }
    +
    + tport->tp_write_urb_in_use = 1;
    +
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +
    + usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
    +
    + usb_fill_bulk_urb(port->write_urb, port->serial->dev,
    + usb_sndbulkpipe(port->serial->dev,
    + port->bulk_out_endpointAddress),
    + port->write_urb->transfer_buffer, count,
    + ti_bulk_out_callback, tport);
    +
    + result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
    + if (result) {
    + dev_err(&port->dev, "%s - submit write urb failed, %d\n", __FUNCTION__, result);
    + tport->tp_write_urb_in_use = 0;
    + /* TODO: reschedule ti_send */
    + } else {
    + spin_lock_irqsave(&tport->tp_lock, flags);
    + tport->tp_icount.tx += count;
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    + }
    +
    + /* more room in the buffer for new writes, wakeup */
    + if (tty)
    + tty_wakeup(tty);
    + wake_up_interruptible(&tport->tp_write_wait);
    +}
    +
    +
    +static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
    +{
    + int status;
    +
    + status = ti_write_byte(tport->tp_tdev,
    + tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
    + TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
    +
    + if (!status)
    + tport->tp_shadow_mcr = mcr;
    +
    + return status;
    +}
    +
    +
    +static int ti_get_lsr(struct ti_port *tport)
    +{
    + int size,status;
    + struct ti_device *tdev = tport->tp_tdev;
    + struct usb_serial_port *port = tport->tp_port;
    + int port_number = port->number - port->serial->minor;
    + struct ti_port_status *data;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + size = sizeof(struct ti_port_status);
    + data = kmalloc(size, GFP_KERNEL);
    + if (!data) {
    + dev_err(&port->dev, "%s - out of memory\n", __FUNCTION__);
    + return -ENOMEM;
    + }
    +
    + status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
    + (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
    + if (status) {
    + dev_err(&port->dev, "%s - get port status command failed, %d\n", __FUNCTION__, status);
    + goto free_data;
    + }
    +
    + dbg("%s - lsr 0x%02X", __FUNCTION__, data->bLSR);
    +
    + tport->tp_lsr = data->bLSR;
    +
    +free_data:
    + kfree(data);
    + return status;
    +}
    +
    +
    +static int ti_get_serial_info(struct ti_port *tport,
    + struct serial_struct __user *ret_arg)
    +{
    + struct usb_serial_port *port = tport->tp_port;
    + struct serial_struct ret_serial;
    +
    + if (!ret_arg)
    + return -EFAULT;
    +
    + memset(&ret_serial, 0, sizeof(ret_serial));
    +
    + ret_serial.type = PORT_16550A;
    + ret_serial.line = port->serial->minor;
    + ret_serial.port = port->number - port->serial->minor;
    + ret_serial.flags = tport->tp_flags;
    + ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
    + ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
    + ret_serial.closing_wait = tport->tp_closing_wait;
    +
    + if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
    + return -EFAULT;
    +
    + return 0;
    +}
    +
    +
    +static int ti_set_serial_info(struct ti_port *tport,
    + struct serial_struct *new_arg)
    +{
    + struct usb_serial_port *port = tport->tp_port;
    + struct serial_struct new_serial;
    +
    + if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
    + return -EFAULT;
    +
    + tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
    + if (port->tty)
    + port->tty->low_latency =
    + (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0;
    + tport->tp_closing_wait = new_serial.closing_wait;
    +
    + return 0;
    +}
    +
    +
    +static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
    +{
    + struct async_icount *icount;
    + struct tty_struct *tty;
    + unsigned long flags;
    +
    + dbg("%s - msr 0x%02X", __FUNCTION__, msr);
    +
    + if (msr & TI_MSR_DELTA_MASK) {
    + spin_lock_irqsave(&tport->tp_lock, flags);
    + icount = &tport->tp_icount;
    + if (msr & TI_MSR_DELTA_CTS)
    + icount->cts++;
    + if (msr & TI_MSR_DELTA_DSR)
    + icount->dsr++;
    + if (msr & TI_MSR_DELTA_CD)
    + icount->dcd++;
    + if (msr & TI_MSR_DELTA_RI)
    + icount->rng++;
    + wake_up_interruptible(&tport->tp_msr_wait);
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    + }
    +
    + tport->tp_msr = msr & TI_MSR_MASK;
    +
    + /* handle CTS flow control */
    + tty = tport->tp_port->tty;
    + if (tty && C_CRTSCTS(tty)) {
    + if (msr & TI_MSR_CTS) {
    + tty->hw_stopped = 0;
    + tty_wakeup(tty);
    + } else {
    + tty->hw_stopped = 1;
    + }
    + }
    +}
    +
    +
    +static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
    +{
    + struct ti_device *tdev = tport->tp_tdev;
    + struct usb_serial_port *port = tport->tp_port;
    + wait_queue_t wait;
    + unsigned long flags;
    +
    + dbg("%s - port %d", __FUNCTION__, port->number);
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    +
    + /* wait for data to drain from the buffer */
    + tdev->td_urb_error = 0;
    + init_waitqueue_entry(&wait, current);
    + add_wait_queue(&tport->tp_write_wait, &wait);
    + for (;;) {
    + set_current_state(TASK_INTERRUPTIBLE);
    + if (ti_buf_data_avail(tport->tp_write_buf) == 0
    + || timeout == 0 || signal_pending(current)
    + || tdev->td_urb_error
    + || !usb_get_intfdata(port->serial->interface)) /* disconnect */
    + break;
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    + timeout = schedule_timeout(timeout);
    + spin_lock_irqsave(&tport->tp_lock, flags);
    + }
    + set_current_state(TASK_RUNNING);
    + remove_wait_queue(&tport->tp_write_wait, &wait);
    +
    + /* flush any remaining data in the buffer */
    + if (flush)
    + ti_buf_clear(tport->tp_write_buf);
    +
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +
    + /* wait for data to drain from the device */
    + /* wait for empty tx register, plus 20 ms */
    + timeout += jiffies;
    + tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
    + while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
    + && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
    + && usb_get_intfdata(port->serial->interface)) { /* not disconnected */
    + if (ti_get_lsr(tport))
    + break;
    + msleep_interruptible(20);
    + }
    +}
    +
    +
    +static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
    +{
    + unsigned long flags;
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    +
    + if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
    + tport->tp_read_urb_state = TI_READ_URB_STOPPING;
    +
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +}
    +
    +
    +static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
    +{
    + struct urb *urb;
    + int status = 0;
    + unsigned long flags;
    +
    + spin_lock_irqsave(&tport->tp_lock, flags);
    +
    + if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
    + urb = tport->tp_port->read_urb;
    + urb->complete = ti_bulk_in_callback;
    + urb->context = tport;
    + urb->dev = tport->tp_port->serial->dev;
    + status = usb_submit_urb(urb, GFP_KERNEL);
    + }
    + tport->tp_read_urb_state = TI_READ_URB_RUNNING;
    +
    + spin_unlock_irqrestore(&tport->tp_lock, flags);
    +
    + return status;
    +}
    +
    +
    +static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
    + __u16 moduleid, __u16 value, __u8 *data, int size)
    +{
    + int status;
    +
    + status = usb_control_msg(tdev->td_serial->dev,
    + usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
    + (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
    + value, moduleid, data, size, HZ);
    +
    + if (status == size)
    + status = 0;
    +
    + if (status > 0)
    + status = -ECOMM;
    +
    + return status;
    +}
    +
    +
    +static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
    + __u16 moduleid, __u16 value, __u8 *data, int size)
    +{
    + int status;
    +
    + status = usb_control_msg(tdev->td_serial->dev,
    + usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
    + (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
    + value, moduleid, data, size, HZ);
    +
    + if (status == size)
    + status = 0;
    +
    + if (status > 0)
    + status = -ECOMM;
    +
    + return status;
    +}
    +
    +
    +static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
    + __u8 mask, __u8 byte)
    +{
    + int status;
    + unsigned int size;
    + struct ti_write_data_bytes *data;
    + struct device *dev = &tdev->td_serial->dev->dev;
    +
    + dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X", __FUNCTION__, addr, mask, byte);
    +
    + size = sizeof(struct ti_write_data_bytes) + 2;
    + data = kmalloc(size, GFP_KERNEL);
    + if (!data) {
    + dev_err(dev, "%s - out of memory\n", __FUNCTION__);
    + return -ENOMEM;
    + }
    +
    + data->bAddrType = TI_RW_DATA_ADDR_XDATA;
    + data->bDataType = TI_RW_DATA_BYTE;
    + data->bDataCounter = 1;
    + data->wBaseAddrHi = cpu_to_be16(addr>>16);
    + data->wBaseAddrLo = cpu_to_be16(addr);
    + data->bData[0] = mask;
    + data->bData[1] = byte;
    +
    + status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
    + (__u8 *)data, size);
    +
    + if (status < 0)
    + dev_err(dev, "%s - failed, %d\n", __FUNCTION__, status);
    +
    + kfree(data);
    +
    + return status;
    +}
    +
    +
    +static int ti_download_firmware(struct ti_device *tdev,
    + unsigned char *firmware, unsigned int firmware_size)
    +{
    + int status = 0;
    + int buffer_size;
    + int pos;
    + int len;
    + int done;
    + __u8 cs = 0;
    + __u8 *buffer;
    + struct usb_device *dev = tdev->td_serial->dev;
    + struct ti_firmware_header *header;
    + unsigned int pipe = usb_sndbulkpipe(dev,
    + tdev->td_serial->port[0]->bulk_out_endpointAddress);
    +
    +
    + buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
    + buffer = kmalloc(buffer_size, GFP_KERNEL);
    + if (!buffer) {
    + dev_err(&dev->dev, "%s - out of memory\n", __FUNCTION__);
    + return -ENOMEM;
    + }
    +
    + memcpy(buffer, firmware, firmware_size);
    + memset(buffer+firmware_size, 0xff, buffer_size-firmware_size);
    +
    + for(pos = sizeof(struct ti_firmware_header); pos < buffer_size; pos++)
    + cs = (__u8)(cs + buffer[pos]);
    +
    + header = (struct ti_firmware_header *)buffer;
    + header->wLength = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_firmware_header)));
    + header->bCheckSum = cs;
    +
    + dbg("%s - downloading firmware", __FUNCTION__);
    + for (pos = 0; pos < buffer_size; pos += done) {
    + len = min(buffer_size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
    + status = usb_bulk_msg(dev, pipe, buffer+pos, len, &done, HZ);
    + if (status)
    + break;
    + }
    +
    + kfree(buffer);
    +
    + if (status) {
    + dev_err(&dev->dev, "%s - error downloading firmware, %d\n", __FUNCTION__, status);
    + return status;
    + }
    +
    + dbg("%s - download successful", __FUNCTION__);
    +
    + return 0;
    +}
    +
    +
    +/* Circular Buffer Functions */
    +
    +/*
    + * ti_buf_alloc
    + *
    + * Allocate a circular buffer and all associated memory.
    + */
    +
    +static struct circ_buf *ti_buf_alloc(void)
    +{
    + struct circ_buf *cb;
    +
    + cb = (struct circ_buf *)kmalloc(sizeof(struct circ_buf), GFP_KERNEL);
    + if (cb == NULL)
    + return NULL;
    +
    + cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL);
    + if (cb->buf == NULL) {
    + kfree(cb);
    + return NULL;
    + }
    +
    + ti_buf_clear(cb);
    +
    + return cb;
    +}
    +
    +
    +/*
    + * ti_buf_free
    + *
    + * Free the buffer and all associated memory.
    + */
    +
    +static inline void ti_buf_free(struct circ_buf *cb)
    +{
    + kfree(cb->buf);
    + kfree(cb);
    +}
    +
    +
    +/*
    + * ti_buf_clear
    + *
    + * Clear out all data in the circular buffer.
    + */
    +
    +static inline void ti_buf_clear(struct circ_buf *cb)
    +{
    + cb->head = cb->tail = 0;
    +}
    +
    +
    +/*
    + * ti_buf_data_avail
    + *
    + * Return the number of bytes of data available in the circular
    + * buffer.
    + */
    +
    +static inline int ti_buf_data_avail(struct circ_buf *cb)
    +{
    + return CIRC_CNT(cb->head,cb->tail,TI_WRITE_BUF_SIZE);
    +}
    +
    +
    +/*
    + * ti_buf_space_avail
    + *
    + * Return the number of bytes of space available in the circular
    + * buffer.
    + */
    +
    +static inline int ti_buf_space_avail(struct circ_buf *cb)
    +{
    + return CIRC_SPACE(cb->head,cb->tail,TI_WRITE_BUF_SIZE);
    +}
    +
    +
    +/*
    + * ti_buf_put
    + *
    + * Copy data data from a user buffer and put it into the circular buffer.
    + * Restrict to the amount of space available.
    + *
    + * Return the number of bytes copied.
    + */
    +
    +static int ti_buf_put(struct circ_buf *cb, const char *buf, int count)
    +{
    + int c, ret = 0;
    +
    + while (1) {
    + c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
    + if (count < c)
    + c = count;
    + if (c <= 0)
    + break;
    + memcpy(cb->buf + cb->head, buf, c);
    + cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1);
    + buf += c;
    + count -= c;
    + ret += c;
    + }
    +
    + return ret;
    +}
    +
    +
    +/*
    + * ti_buf_get
    + *
    + * Get data from the circular buffer and copy to the given buffer.
    + * Restrict to the amount of data available.
    + *
    + * Return the number of bytes copied.
    + */
    +
    +static int ti_buf_get(struct circ_buf *cb, char *buf, int count)
    +{
    + int c, ret = 0;
    +
    + while (1) {
    + c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
    + if (count < c)
    + c = count;
    + if (c <= 0)
    + break;
    + memcpy(buf, cb->buf + cb->tail, c);
    + cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1);
    + buf += c;
    + count -= c;
    + ret += c;
    + }
    +
    + return ret;
    +}
    diff -Nru a/drivers/usb/serial/ti_usb_3410_5052.h b/drivers/usb/serial/ti_usb_3410_5052.h
    --- /dev/null Wed Dec 31 16:00:00 196900
    +++ b/drivers/usb/serial/ti_usb_3410_5052.h 2005-01-07 15:51:18 -08:00
    @@ -0,0 +1,224 @@
    +/* vi: ts=8 sw=8
    + *
    + * TI 3410/5052 USB Serial Driver Header
    + *
    + * Copyright (C) 2004 Texas Instruments
    + *
    + * This driver is based on the Linux io_ti driver, which is
    + * Copyright (C) 2000-2002 Inside Out Networks
    + * Copyright (C) 2001-2002 Greg Kroah-Hartman
    + *
    + * 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.
    + *
    + * For questions or problems with this driver, contact Texas Instruments
    + * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
    + * Peter Berger <pberger@brimson.com>.
    + */
    +
    +#ifndef _TI_3410_5052_H_
    +#define _TI_3410_5052_H_
    +
    +/* Configuration ids */
    +#define TI_BOOT_CONFIG 1
    +#define TI_ACTIVE_CONFIG 2
    +
    +/* Vendor and product ids */
    +#define TI_VENDOR_ID 0x0451
    +#define TI_3410_PRODUCT_ID 0x3410
    +#define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
    +#define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
    +#define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
    +#define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
    +
    +/* Commands */
    +#define TI_GET_VERSION 0x01
    +#define TI_GET_PORT_STATUS 0x02
    +#define TI_GET_PORT_DEV_INFO 0x03
    +#define TI_GET_CONFIG 0x04
    +#define TI_SET_CONFIG 0x05
    +#define TI_OPEN_PORT 0x06
    +#define TI_CLOSE_PORT 0x07
    +#define TI_START_PORT 0x08
    +#define TI_STOP_PORT 0x09
    +#define TI_TEST_PORT 0x0A
    +#define TI_PURGE_PORT 0x0B
    +#define TI_RESET_EXT_DEVICE 0x0C
    +#define TI_WRITE_DATA 0x80
    +#define TI_READ_DATA 0x81
    +#define TI_REQ_TYPE_CLASS 0x82
    +
    +/* Module identifiers */
    +#define TI_I2C_PORT 0x01
    +#define TI_IEEE1284_PORT 0x02
    +#define TI_UART1_PORT 0x03
    +#define TI_UART2_PORT 0x04
    +#define TI_RAM_PORT 0x05
    +
    +/* Modem status */
    +#define TI_MSR_DELTA_CTS 0x01
    +#define TI_MSR_DELTA_DSR 0x02
    +#define TI_MSR_DELTA_RI 0x04
    +#define TI_MSR_DELTA_CD 0x08
    +#define TI_MSR_CTS 0x10
    +#define TI_MSR_DSR 0x20
    +#define TI_MSR_RI 0x40
    +#define TI_MSR_CD 0x80
    +#define TI_MSR_DELTA_MASK 0x0F
    +#define TI_MSR_MASK 0xF0
    +
    +/* Line status */
    +#define TI_LSR_OVERRUN_ERROR 0x01
    +#define TI_LSR_PARITY_ERROR 0x02
    +#define TI_LSR_FRAMING_ERROR 0x04
    +#define TI_LSR_BREAK 0x08
    +#define TI_LSR_ERROR 0x0F
    +#define TI_LSR_RX_FULL 0x10
    +#define TI_LSR_TX_EMPTY 0x20
    +
    +/* Line control */
    +#define TI_LCR_BREAK 0x40
    +
    +/* Modem control */
    +#define TI_MCR_LOOP 0x04
    +#define TI_MCR_DTR 0x10
    +#define TI_MCR_RTS 0x20
    +
    +/* Mask settings */
    +#define TI_UART_ENABLE_RTS_IN 0x0001
    +#define TI_UART_DISABLE_RTS 0x0002
    +#define TI_UART_ENABLE_PARITY_CHECKING 0x0008
    +#define TI_UART_ENABLE_DSR_OUT 0x0010
    +#define TI_UART_ENABLE_CTS_OUT 0x0020
    +#define TI_UART_ENABLE_X_OUT 0x0040
    +#define TI_UART_ENABLE_XA_OUT 0x0080
    +#define TI_UART_ENABLE_X_IN 0x0100
    +#define TI_UART_ENABLE_DTR_IN 0x0800
    +#define TI_UART_DISABLE_DTR 0x1000
    +#define TI_UART_ENABLE_MS_INTS 0x2000
    +#define TI_UART_ENABLE_AUTO_START_DMA 0x4000
    +
    +/* Parity */
    +#define TI_UART_NO_PARITY 0x00
    +#define TI_UART_ODD_PARITY 0x01
    +#define TI_UART_EVEN_PARITY 0x02
    +#define TI_UART_MARK_PARITY 0x03
    +#define TI_UART_SPACE_PARITY 0x04
    +
    +/* Stop bits */
    +#define TI_UART_1_STOP_BITS 0x00
    +#define TI_UART_1_5_STOP_BITS 0x01
    +#define TI_UART_2_STOP_BITS 0x02
    +
    +/* Bits per character */
    +#define TI_UART_5_DATA_BITS 0x00
    +#define TI_UART_6_DATA_BITS 0x01
    +#define TI_UART_7_DATA_BITS 0x02
    +#define TI_UART_8_DATA_BITS 0x03
    +
    +/* 232/485 modes */
    +#define TI_UART_232 0x00
    +#define TI_UART_485_RECEIVER_DISABLED 0x01
    +#define TI_UART_485_RECEIVER_ENABLED 0x02
    +
    +/* Pipe transfer mode and timeout */
    +#define TI_PIPE_MODE_CONTINOUS 0x01
    +#define TI_PIPE_MODE_MASK 0x03
    +#define TI_PIPE_TIMEOUT_MASK 0x7C
    +#define TI_PIPE_TIMEOUT_ENABLE 0x80
    +
    +/* Config struct */
    +struct ti_uart_config {
    + __u16 wBaudRate;
    + __u16 wFlags;
    + __u8 bDataBits;
    + __u8 bParity;
    + __u8 bStopBits;
    + char cXon;
    + char cXoff;
    + __u8 bUartMode;
    +} __attribute__((packed));
    +
    +/* Get port status */
    +struct ti_port_status {
    + __u8 bCmdCode;
    + __u8 bModuleId;
    + __u8 bErrorCode;
    + __u8 bMSR;
    + __u8 bLSR;
    +} __attribute__((packed));
    +
    +/* Purge modes */
    +#define TI_PURGE_OUTPUT 0x00
    +#define TI_PURGE_INPUT 0x80
    +
    +/* Read/Write data */
    +#define TI_RW_DATA_ADDR_SFR 0x10
    +#define TI_RW_DATA_ADDR_IDATA 0x20
    +#define TI_RW_DATA_ADDR_XDATA 0x30
    +#define TI_RW_DATA_ADDR_CODE 0x40
    +#define TI_RW_DATA_ADDR_GPIO 0x50
    +#define TI_RW_DATA_ADDR_I2C 0x60
    +#define TI_RW_DATA_ADDR_FLASH 0x70
    +#define TI_RW_DATA_ADDR_DSP 0x80
    +
    +#define TI_RW_DATA_UNSPECIFIED 0x00
    +#define TI_RW_DATA_BYTE 0x01
    +#define TI_RW_DATA_WORD 0x02
    +#define TI_RW_DATA_DOUBLE_WORD 0x04
    +
    +struct ti_write_data_bytes {
    + __u8 bAddrType;
    + __u8 bDataType;
    + __u8 bDataCounter;
    + __be16 wBaseAddrHi;
    + __be16 wBaseAddrLo;
    + __u8 bData[0];
    +} __attribute__((packed));
    +
    +struct ti_read_data_request {
    + __u8 bAddrType;
    + __u8 bDataType;
    + __u8 bDataCounter;
    + __be16 wBaseAddrHi;
    + __be16 wBaseAddrLo;
    +} __attribute__((packed));
    +
    +struct ti_read_data_bytes {
    + __u8 bCmdCode;
    + __u8 bModuleId;
    + __u8 bErrorCode;
    + __u8 bData[0];
    +} __attribute__((packed));
    +
    +/* Interrupt struct */
    +struct ti_interrupt {
    + __u8 bICode;
    + __u8 bIInfo;
    +} __attribute__((packed));
    +
    +/* Interrupt codes */
    +#define TI_GET_PORT_FROM_CODE(c) (((c) >> 4) - 3)
    +#define TI_GET_FUNC_FROM_CODE(c) ((c) & 0x0f)
    +#define TI_CODE_HARDWARE_ERROR 0xFF
    +#define TI_CODE_DATA_ERROR 0x03
    +#define TI_CODE_MODEM_STATUS 0x04
    +
    +/* Download firmware max packet size */
    +#define TI_DOWNLOAD_MAX_PACKET_SIZE 64
    +
    +/* Firmware image header */
    +struct ti_firmware_header {
    + __le16 wLength;
    + __u8 bCheckSum;
    +} __attribute__((packed));
    +
    +/* UART addresses */
    +#define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
    +#define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
    +#define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
    +#define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
    +
    +#endif /* _TI_3410_5052_H_ */

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