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-rw-r--r--drivers/usb/serial/whiteheat.c832
1 files changed, 832 insertions, 0 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
new file mode 100644
index 000000000..5576cfa50
--- /dev/null
+++ b/drivers/usb/serial/whiteheat.c
@@ -0,0 +1,832 @@
+// 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.rst 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_get_serial(struct tty_struct *tty,
+ struct serial_struct *ss);
+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,
+ .get_serial = whiteheat_get_serial,
+ .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_get_serial(struct tty_struct *tty,
+ struct serial_struct *ss)
+{
+ struct usb_serial_port *port = tty->driver_data;
+
+ ss->type = PORT_16654;
+ ss->line = port->minor;
+ ss->port = port->port_number;
+ ss->xmit_fifo_size = kfifo_size(&port->write_fifo);
+ ss->custom_divisor = 0;
+ ss->baud_base = 460800;
+ ss->close_delay = CLOSING_DELAY;
+ ss->closing_wait = CLOSING_DELAY;
+
+ return 0;
+}
+
+
+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);
+
+ if (command_port->bulk_out_size < datasize + 1)
+ return -EIO;
+
+ 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);
+ info->mcr = command_info->result_buffer[0];
+ 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;
+ speed_t baud;
+
+ 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 */
+ baud = tty_get_baud_rate(tty);
+ port_settings.baud = cpu_to_le32(baud);
+ dev_dbg(dev, "%s - baud rate = %u\n", __func__, baud);
+
+ /* fixme: should set validated settings */
+ tty_encode_baud_rate(tty, baud, 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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 02:07:33 +0000