mirror of https://gitee.com/openkylin/linux.git
839 lines
24 KiB
C
839 lines
24 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* USB ConnectTech WhiteHEAT driver
|
|
*
|
|
* Copyright (C) 2002
|
|
* Connect Tech Inc.
|
|
*
|
|
* Copyright (C) 1999 - 2001
|
|
* Greg Kroah-Hartman (greg@kroah.com)
|
|
*
|
|
* See Documentation/usb/usb-serial.txt for more information on using this
|
|
* driver
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/tty_driver.h>
|
|
#include <linux/tty_flip.h>
|
|
#include <linux/module.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/uaccess.h>
|
|
#include <asm/termbits.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/serial_reg.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/usb/serial.h>
|
|
#include <linux/usb/ezusb.h>
|
|
#include "whiteheat.h" /* WhiteHEAT specific commands */
|
|
|
|
#ifndef CMSPAR
|
|
#define CMSPAR 0
|
|
#endif
|
|
|
|
/*
|
|
* Version Information
|
|
*/
|
|
#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 const struct usb_device_id id_table_std[] = {
|
|
{ USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
static const struct usb_device_id id_table_prerenumeration[] = {
|
|
{ USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
static const 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);
|
|
|
|
|
|
/* 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_release(struct usb_serial *serial);
|
|
static int whiteheat_port_probe(struct usb_serial_port *port);
|
|
static int whiteheat_port_remove(struct usb_serial_port *port);
|
|
static int whiteheat_open(struct tty_struct *tty,
|
|
struct usb_serial_port *port);
|
|
static void whiteheat_close(struct usb_serial_port *port);
|
|
static int whiteheat_ioctl(struct tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg);
|
|
static void whiteheat_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port, struct ktermios *old);
|
|
static int whiteheat_tiocmget(struct tty_struct *tty);
|
|
static int whiteheat_tiocmset(struct tty_struct *tty,
|
|
unsigned int set, unsigned int clear);
|
|
static void whiteheat_break_ctl(struct tty_struct *tty, int break_state);
|
|
|
|
static struct usb_serial_driver whiteheat_fake_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "whiteheatnofirm",
|
|
},
|
|
.description = "Connect Tech - WhiteHEAT - (prerenumeration)",
|
|
.id_table = id_table_prerenumeration,
|
|
.num_ports = 1,
|
|
.probe = whiteheat_firmware_download,
|
|
.attach = whiteheat_firmware_attach,
|
|
};
|
|
|
|
static struct usb_serial_driver whiteheat_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "whiteheat",
|
|
},
|
|
.description = "Connect Tech - WhiteHEAT",
|
|
.id_table = id_table_std,
|
|
.num_ports = 4,
|
|
.num_bulk_in = 5,
|
|
.num_bulk_out = 5,
|
|
.attach = whiteheat_attach,
|
|
.release = whiteheat_release,
|
|
.port_probe = whiteheat_port_probe,
|
|
.port_remove = whiteheat_port_remove,
|
|
.open = whiteheat_open,
|
|
.close = whiteheat_close,
|
|
.ioctl = whiteheat_ioctl,
|
|
.set_termios = whiteheat_set_termios,
|
|
.break_ctl = whiteheat_break_ctl,
|
|
.tiocmget = whiteheat_tiocmget,
|
|
.tiocmset = whiteheat_tiocmset,
|
|
.throttle = usb_serial_generic_throttle,
|
|
.unthrottle = usb_serial_generic_unthrottle,
|
|
};
|
|
|
|
static struct usb_serial_driver * const serial_drivers[] = {
|
|
&whiteheat_fake_device, &whiteheat_device, NULL
|
|
};
|
|
|
|
struct whiteheat_command_private {
|
|
struct mutex mutex;
|
|
__u8 port_running;
|
|
__u8 command_finished;
|
|
wait_queue_head_t wait_command; /* for handling sleeping whilst
|
|
waiting for a command to
|
|
finish */
|
|
__u8 result_buffer[64];
|
|
};
|
|
|
|
struct whiteheat_private {
|
|
__u8 mcr; /* FIXME: no locking on mcr */
|
|
};
|
|
|
|
|
|
/* 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);
|
|
static void command_port_read_callback(struct urb *urb);
|
|
|
|
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 void firm_setup_port(struct tty_struct *tty);
|
|
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;
|
|
|
|
response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw");
|
|
if (response >= 0) {
|
|
response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw");
|
|
if (response >= 0)
|
|
return 0;
|
|
}
|
|
return -ENOENT;
|
|
}
|
|
|
|
|
|
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 whiteheat_hw_info *hw_info;
|
|
int pipe;
|
|
int ret;
|
|
int alen;
|
|
__u8 *command;
|
|
__u8 *result;
|
|
|
|
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) {
|
|
dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n",
|
|
serial->type->description, ret);
|
|
goto no_firmware;
|
|
} else if (alen != 2) {
|
|
dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n",
|
|
serial->type->description, 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) {
|
|
dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n",
|
|
serial->type->description, ret);
|
|
goto no_firmware;
|
|
} else if (alen != sizeof(*hw_info) + 1) {
|
|
dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n",
|
|
serial->type->description, alen);
|
|
goto no_firmware;
|
|
} else if (result[0] != command[0]) {
|
|
dev_err(&serial->dev->dev, "%s: Command failed [%d]\n",
|
|
serial->type->description, result[0]);
|
|
goto no_firmware;
|
|
}
|
|
|
|
hw_info = (struct whiteheat_hw_info *)&result[1];
|
|
|
|
dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n",
|
|
serial->type->description,
|
|
hw_info->sw_major_rev, hw_info->sw_minor_rev);
|
|
|
|
command_info = kmalloc(sizeof(struct whiteheat_command_private),
|
|
GFP_KERNEL);
|
|
if (!command_info)
|
|
goto no_command_private;
|
|
|
|
mutex_init(&command_info->mutex);
|
|
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 */
|
|
dev_err(&serial->dev->dev,
|
|
"%s: Unable to retrieve firmware version, try replugging\n",
|
|
serial->type->description);
|
|
dev_err(&serial->dev->dev,
|
|
"%s: If the firmware is not running (status led not blinking)\n",
|
|
serial->type->description);
|
|
dev_err(&serial->dev->dev,
|
|
"%s: please contact support@connecttech.com\n",
|
|
serial->type->description);
|
|
kfree(result);
|
|
kfree(command);
|
|
return -ENODEV;
|
|
|
|
no_command_private:
|
|
kfree(result);
|
|
no_result_buffer:
|
|
kfree(command);
|
|
no_command_buffer:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void whiteheat_release(struct usb_serial *serial)
|
|
{
|
|
struct usb_serial_port *command_port;
|
|
|
|
/* free up our private data for our command port */
|
|
command_port = serial->port[COMMAND_PORT];
|
|
kfree(usb_get_serial_port_data(command_port));
|
|
}
|
|
|
|
static int whiteheat_port_probe(struct usb_serial_port *port)
|
|
{
|
|
struct whiteheat_private *info;
|
|
|
|
info = kzalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
usb_set_serial_port_data(port, info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int whiteheat_port_remove(struct usb_serial_port *port)
|
|
{
|
|
struct whiteheat_private *info;
|
|
|
|
info = usb_get_serial_port_data(port);
|
|
kfree(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
{
|
|
int retval;
|
|
|
|
retval = start_command_port(port->serial);
|
|
if (retval)
|
|
goto exit;
|
|
|
|
/* 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;
|
|
}
|
|
|
|
if (tty)
|
|
firm_setup_port(tty);
|
|
|
|
/* Work around HCD bugs */
|
|
usb_clear_halt(port->serial->dev, port->read_urb->pipe);
|
|
usb_clear_halt(port->serial->dev, port->write_urb->pipe);
|
|
|
|
retval = usb_serial_generic_open(tty, port);
|
|
if (retval) {
|
|
firm_close(port);
|
|
stop_command_port(port->serial);
|
|
goto exit;
|
|
}
|
|
exit:
|
|
return retval;
|
|
}
|
|
|
|
|
|
static void whiteheat_close(struct usb_serial_port *port)
|
|
{
|
|
firm_report_tx_done(port);
|
|
firm_close(port);
|
|
|
|
usb_serial_generic_close(port);
|
|
|
|
stop_command_port(port->serial);
|
|
}
|
|
|
|
static int whiteheat_tiocmget(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct whiteheat_private *info = usb_get_serial_port_data(port);
|
|
unsigned int modem_signals = 0;
|
|
|
|
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 tty_struct *tty,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct whiteheat_private *info = usb_get_serial_port_data(port);
|
|
|
|
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 tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct serial_struct serstruct;
|
|
void __user *user_arg = (void __user *)arg;
|
|
|
|
switch (cmd) {
|
|
case TIOCGSERIAL:
|
|
memset(&serstruct, 0, sizeof(serstruct));
|
|
serstruct.type = PORT_16654;
|
|
serstruct.line = port->minor;
|
|
serstruct.port = port->port_number;
|
|
serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo);
|
|
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;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
|
|
static void whiteheat_set_termios(struct tty_struct *tty,
|
|
struct usb_serial_port *port, struct ktermios *old_termios)
|
|
{
|
|
firm_setup_port(tty);
|
|
}
|
|
|
|
static void whiteheat_break_ctl(struct tty_struct *tty, int break_state)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
firm_set_break(port, break_state);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* Connect Tech's White Heat callback routines
|
|
*****************************************************************************/
|
|
static void command_port_write_callback(struct urb *urb)
|
|
{
|
|
int status = urb->status;
|
|
|
|
if (status) {
|
|
dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
static void command_port_read_callback(struct urb *urb)
|
|
{
|
|
struct usb_serial_port *command_port = urb->context;
|
|
struct whiteheat_command_private *command_info;
|
|
int status = urb->status;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
int result;
|
|
|
|
command_info = usb_get_serial_port_data(command_port);
|
|
if (!command_info) {
|
|
dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__);
|
|
return;
|
|
}
|
|
if (!urb->actual_length) {
|
|
dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__);
|
|
return;
|
|
}
|
|
if (status) {
|
|
dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status);
|
|
if (status != -ENOENT)
|
|
command_info->command_finished = WHITEHEAT_CMD_FAILURE;
|
|
wake_up(&command_info->wait_command);
|
|
return;
|
|
}
|
|
|
|
usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data);
|
|
|
|
if (data[0] == WHITEHEAT_CMD_COMPLETE) {
|
|
command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
|
|
wake_up(&command_info->wait_command);
|
|
} else if (data[0] == WHITEHEAT_CMD_FAILURE) {
|
|
command_info->command_finished = WHITEHEAT_CMD_FAILURE;
|
|
wake_up(&command_info->wait_command);
|
|
} else if (data[0] == WHITEHEAT_EVENT) {
|
|
/* These are unsolicited reports from the firmware, hence no
|
|
waiting command to wakeup */
|
|
dev_dbg(&urb->dev->dev, "%s - event received\n", __func__);
|
|
} else if ((data[0] == WHITEHEAT_GET_DTR_RTS) &&
|
|
(urb->actual_length - 1 <= sizeof(command_info->result_buffer))) {
|
|
memcpy(command_info->result_buffer, &data[1],
|
|
urb->actual_length - 1);
|
|
command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
|
|
wake_up(&command_info->wait_command);
|
|
} else
|
|
dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__);
|
|
|
|
/* Continue trying to always read */
|
|
result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
|
|
if (result)
|
|
dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n",
|
|
__func__, result);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
* 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;
|
|
struct device *dev = &port->dev;
|
|
__u8 *transfer_buffer;
|
|
int retval = 0;
|
|
int t;
|
|
|
|
dev_dbg(dev, "%s - command %d\n", __func__, command);
|
|
|
|
command_port = port->serial->port[COMMAND_PORT];
|
|
command_info = usb_get_serial_port_data(command_port);
|
|
mutex_lock(&command_info->mutex);
|
|
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;
|
|
retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
|
|
if (retval) {
|
|
dev_dbg(dev, "%s - submit urb failed\n", __func__);
|
|
goto exit;
|
|
}
|
|
|
|
/* wait for the command to complete */
|
|
t = wait_event_timeout(command_info->wait_command,
|
|
(bool)command_info->command_finished, COMMAND_TIMEOUT);
|
|
if (!t)
|
|
usb_kill_urb(command_port->write_urb);
|
|
|
|
if (command_info->command_finished == false) {
|
|
dev_dbg(dev, "%s - command timed out.\n", __func__);
|
|
retval = -ETIMEDOUT;
|
|
goto exit;
|
|
}
|
|
|
|
if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) {
|
|
dev_dbg(dev, "%s - command failed.\n", __func__);
|
|
retval = -EIO;
|
|
goto exit;
|
|
}
|
|
|
|
if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) {
|
|
dev_dbg(dev, "%s - command completed.\n", __func__);
|
|
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:
|
|
mutex_unlock(&command_info->mutex);
|
|
return retval;
|
|
}
|
|
|
|
|
|
static int firm_open(struct usb_serial_port *port)
|
|
{
|
|
struct whiteheat_simple open_command;
|
|
|
|
open_command.port = port->port_number + 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->port_number + 1;
|
|
return firm_send_command(port, WHITEHEAT_CLOSE,
|
|
(__u8 *)&close_command, sizeof(close_command));
|
|
}
|
|
|
|
|
|
static void firm_setup_port(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct device *dev = &port->dev;
|
|
struct whiteheat_port_settings port_settings;
|
|
unsigned int cflag = tty->termios.c_cflag;
|
|
|
|
port_settings.port = 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;
|
|
}
|
|
dev_dbg(dev, "%s - data bits = %d\n", __func__, 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;
|
|
dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity);
|
|
|
|
/* figure out the stop bits requested */
|
|
if (cflag & CSTOPB)
|
|
port_settings.stop = 2;
|
|
else
|
|
port_settings.stop = 1;
|
|
dev_dbg(dev, "%s - stop bits = %d\n", __func__, 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;
|
|
dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__,
|
|
(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(tty))
|
|
port_settings.sflow = WHITEHEAT_SFLOW_RXTX;
|
|
else
|
|
port_settings.sflow = WHITEHEAT_SFLOW_NONE;
|
|
dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow);
|
|
|
|
port_settings.xon = START_CHAR(tty);
|
|
port_settings.xoff = STOP_CHAR(tty);
|
|
dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
|
|
|
|
/* get the baud rate wanted */
|
|
port_settings.baud = tty_get_baud_rate(tty);
|
|
dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud);
|
|
|
|
/* fixme: should set validated settings */
|
|
tty_encode_baud_rate(tty, port_settings.baud, 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 */
|
|
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->port_number + 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->port_number + 1;
|
|
dtr_command.state = onoff;
|
|
return firm_send_command(port, WHITEHEAT_SET_DTR,
|
|
(__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->port_number + 1;
|
|
break_command.state = onoff;
|
|
return firm_send_command(port, WHITEHEAT_SET_BREAK,
|
|
(__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->port_number + 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->port_number + 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->port_number + 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;
|
|
int retval = 0;
|
|
|
|
command_port = serial->port[COMMAND_PORT];
|
|
command_info = usb_get_serial_port_data(command_port);
|
|
mutex_lock(&command_info->mutex);
|
|
if (!command_info->port_running) {
|
|
/* Work around HCD bugs */
|
|
usb_clear_halt(serial->dev, command_port->read_urb->pipe);
|
|
|
|
retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
|
|
if (retval) {
|
|
dev_err(&serial->dev->dev,
|
|
"%s - failed submitting read urb, error %d\n",
|
|
__func__, retval);
|
|
goto exit;
|
|
}
|
|
}
|
|
command_info->port_running++;
|
|
|
|
exit:
|
|
mutex_unlock(&command_info->mutex);
|
|
return retval;
|
|
}
|
|
|
|
|
|
static void stop_command_port(struct usb_serial *serial)
|
|
{
|
|
struct usb_serial_port *command_port;
|
|
struct whiteheat_command_private *command_info;
|
|
|
|
command_port = serial->port[COMMAND_PORT];
|
|
command_info = usb_get_serial_port_data(command_port);
|
|
mutex_lock(&command_info->mutex);
|
|
command_info->port_running--;
|
|
if (!command_info->port_running)
|
|
usb_kill_urb(command_port->read_urb);
|
|
mutex_unlock(&command_info->mutex);
|
|
}
|
|
|
|
module_usb_serial_driver(serial_drivers, id_table_combined);
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_FIRMWARE("whiteheat.fw");
|
|
MODULE_FIRMWARE("whiteheat_loader.fw");
|