diff options
Diffstat (limited to 'drivers/usb/serial/ti_usb_3410_5052.c')
| -rw-r--r-- | drivers/usb/serial/ti_usb_3410_5052.c | 1750 |
1 files changed, 1750 insertions, 0 deletions
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c new file mode 100644 index 00000000..33774375 --- /dev/null +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -0,0 +1,1750 @@ +/* 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>. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/firmware.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/kfifo.h> +#include <linux/mutex.h> +#include <linux/uaccess.h> +#include <linux/usb.h> +#include <linux/usb/serial.h> + +#include "ti_usb_3410_5052.h" + +/* Defines */ + +#define TI_DRIVER_VERSION "v0.10" +#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_CLOSING_WAIT 4000 /* in .01 secs */ + +/* supported setserial flags */ +#define TI_SET_SERIAL_FLAGS 0 + +/* 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 kfifo write_fifo; +}; + +struct ti_device { + struct mutex td_open_close_lock; + 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_release(struct usb_serial *serial); +static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); +static void ti_close(struct usb_serial_port *port); +static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *data, int count); +static int ti_write_room(struct tty_struct *tty); +static int ti_chars_in_buffer(struct tty_struct *tty); +static void ti_throttle(struct tty_struct *tty); +static void ti_unthrottle(struct tty_struct *tty); +static int ti_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg); +static int ti_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount); +static void ti_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios); +static int ti_tiocmget(struct tty_struct *tty); +static int ti_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); +static void ti_break(struct tty_struct *tty, int break_state); +static void ti_interrupt_callback(struct urb *urb); +static void ti_bulk_in_callback(struct urb *urb); +static void ti_bulk_out_callback(struct urb *urb); + +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 tty_struct *tty, struct ti_port *tport, + struct serial_struct __user *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); + + +/* Data */ + +/* module parameters */ +static bool debug; +static int closing_wait = TI_DEFAULT_CLOSING_WAIT; +static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT]; +static unsigned int vendor_3410_count; +static ushort product_3410[TI_EXTRA_VID_PID_COUNT]; +static unsigned int product_3410_count; +static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT]; +static unsigned int vendor_5052_count; +static ushort product_5052[TI_EXTRA_VID_PID_COUNT]; +static unsigned 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[15+TI_EXTRA_VID_PID_COUNT+1] = { + { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, + { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, + { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, + { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, + { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, + { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, +}; + +static struct usb_device_id ti_id_table_5052[5+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[19+2*TI_EXTRA_VID_PID_COUNT+1] = { + { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, + { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, + { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_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) }, + { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, + { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, + { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, + { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, + { } +}; + +static struct usb_driver ti_usb_driver = { + .name = "ti_usb_3410_5052", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = ti_id_table_combined, +}; + +static struct usb_serial_driver ti_1port_device = { + .driver = { + .owner = THIS_MODULE, + .name = "ti_usb_3410_5052_1", + }, + .description = "TI USB 3410 1 port adapter", + .id_table = ti_id_table_3410, + .num_ports = 1, + .attach = ti_startup, + .release = ti_release, + .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, + .get_icount = ti_get_icount, + .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_driver ti_2port_device = { + .driver = { + .owner = THIS_MODULE, + .name = "ti_usb_3410_5052_2", + }, + .description = "TI USB 5052 2 port adapter", + .id_table = ti_id_table_5052, + .num_ports = 2, + .attach = ti_startup, + .release = ti_release, + .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, + .get_icount = ti_get_icount, + .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_driver * const serial_drivers[] = { + &ti_1port_device, &ti_2port_device, NULL +}; + +/* Module */ + +MODULE_AUTHOR(TI_DRIVER_AUTHOR); +MODULE_DESCRIPTION(TI_DRIVER_DESC); +MODULE_VERSION(TI_DRIVER_VERSION); +MODULE_LICENSE("GPL"); + +MODULE_FIRMWARE("ti_3410.fw"); +MODULE_FIRMWARE("ti_5052.fw"); +MODULE_FIRMWARE("mts_cdma.fw"); +MODULE_FIRMWARE("mts_gsm.fw"); +MODULE_FIRMWARE("mts_edge.fw"); +MODULE_FIRMWARE("mts_mt9234mu.fw"); +MODULE_FIRMWARE("mts_mt9234zba.fw"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes"); + +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, c; + int ret; + + /* insert extra vendor and product ids */ + c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1; + j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; + for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) { + 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; + ti_id_table_combined[c].idVendor = vendor_3410[i]; + ti_id_table_combined[c].idProduct = product_3410[i]; + ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; + } + j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; + for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) { + 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; + ti_id_table_combined[c].idVendor = vendor_5052[i]; + ti_id_table_combined[c].idProduct = product_5052[i]; + ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; + } + + ret = usb_serial_register_drivers(&ti_usb_driver, serial_drivers); + if (ret == 0) + printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":" + TI_DRIVER_DESC "\n"); + return ret; +} + + +static void __exit ti_exit(void) +{ + usb_serial_deregister_drivers(&ti_usb_driver, serial_drivers); +} + + +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", + __func__, le16_to_cpu(dev->descriptor.idProduct), + dev->descriptor.bNumConfigurations, + dev->actconfig->desc.bConfigurationValue); + + /* create device structure */ + tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); + if (tdev == NULL) { + dev_err(&dev->dev, "%s - out of memory\n", __func__); + return -ENOMEM; + } + mutex_init(&tdev->td_open_close_lock); + 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", __func__, + tdev->td_is_3410 ? "3410" : "5052"); + + /* if we have only 1 configuration, download firmware */ + if (dev->descriptor.bNumConfigurations == 1) { + if ((status = ti_download_firmware(tdev)) != 0) + 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 */ + if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { + status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); + status = status ? status : -ENODEV; + goto free_tdev; + } + + /* set up port structures */ + for (i = 0; i < serial->num_ports; ++i) { + tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL); + if (tport == NULL) { + dev_err(&dev->dev, "%s - out of memory\n", __func__); + status = -ENOMEM; + goto free_tports; + } + spin_lock_init(&tport->tp_lock); + tport->tp_uart_base_addr = (i == 0 ? + TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); + tport->tp_closing_wait = closing_wait; + init_waitqueue_head(&tport->tp_msr_wait); + init_waitqueue_head(&tport->tp_write_wait); + if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, + GFP_KERNEL)) { + dev_err(&dev->dev, "%s - out of memory\n", __func__); + 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]); + kfifo_free(&tport->write_fifo); + 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_release(struct usb_serial *serial) +{ + int i; + struct ti_device *tdev = usb_get_serial_data(serial); + struct ti_port *tport; + + dbg("%s", __func__); + + for (i = 0; i < serial->num_ports; ++i) { + tport = usb_get_serial_port_data(serial->port[i]); + if (tport) { + kfifo_free(&tport->write_fifo); + kfree(tport); + } + } + + kfree(tdev); +} + + +static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) +{ + 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", __func__, 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 (mutex_lock_interruptible(&tdev->td_open_close_lock)) + return -ERESTARTSYS; + + 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", __func__); + urb = tdev->td_serial->port[0]->interrupt_in_urb; + if (!urb) { + dev_err(&port->dev, "%s - no interrupt urb\n", + __func__); + status = -EINVAL; + goto release_lock; + } + urb->context = tdev; + status = usb_submit_urb(urb, GFP_KERNEL); + if (status) { + dev_err(&port->dev, + "%s - submit interrupt urb failed, %d\n", + __func__, status); + goto release_lock; + } + } + + if (tty) + ti_set_termios(tty, port, tty->termios); + + dbg("%s - sending TI_OPEN_PORT", __func__); + 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", + __func__, status); + goto unlink_int_urb; + } + + dbg("%s - sending TI_START_PORT", __func__); + 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", + __func__, status); + goto unlink_int_urb; + } + + dbg("%s - sending TI_PURGE_PORT", __func__); + 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", + __func__, 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", + __func__, 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); + + if (tty) + ti_set_termios(tty, port, tty->termios); + + dbg("%s - sending TI_OPEN_PORT (2)", __func__); + 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", + __func__, status); + goto unlink_int_urb; + } + + dbg("%s - sending TI_START_PORT (2)", __func__); + 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", + __func__, status); + goto unlink_int_urb; + } + + /* start read urb */ + dbg("%s - start read urb", __func__); + urb = port->read_urb; + if (!urb) { + dev_err(&port->dev, "%s - no read urb\n", __func__); + status = -EINVAL; + goto unlink_int_urb; + } + tport->tp_read_urb_state = TI_READ_URB_RUNNING; + urb->context = tport; + status = usb_submit_urb(urb, GFP_KERNEL); + if (status) { + dev_err(&port->dev, "%s - submit read urb failed, %d\n", + __func__, status); + goto unlink_int_urb; + } + + tport->tp_is_open = 1; + ++tdev->td_open_port_count; + + goto release_lock; + +unlink_int_urb: + if (tdev->td_open_port_count == 0) + usb_kill_urb(port->serial->port[0]->interrupt_in_urb); +release_lock: + mutex_unlock(&tdev->td_open_close_lock); + dbg("%s - exit %d", __func__, status); + return status; +} + + +static void ti_close(struct usb_serial_port *port) +{ + struct ti_device *tdev; + struct ti_port *tport; + int port_number; + int status; + int do_unlock; + + dbg("%s - port %d", __func__, 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", __func__); + 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" + , __func__, status); + + /* if mutex_lock is interrupted, continue anyway */ + do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); + --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_unlock) + mutex_unlock(&tdev->td_open_close_lock); + + dbg("%s - exit", __func__); +} + + +static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *data, int count) +{ + struct ti_port *tport = usb_get_serial_port_data(port); + + dbg("%s - port %d", __func__, port->number); + + if (count == 0) { + dbg("%s - write request of 0 bytes", __func__); + return 0; + } + + if (tport == NULL || !tport->tp_is_open) + return -ENODEV; + + count = kfifo_in_locked(&tport->write_fifo, data, count, + &tport->tp_lock); + ti_send(tport); + + return count; +} + + +static int ti_write_room(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + int room = 0; + unsigned long flags; + + dbg("%s - port %d", __func__, port->number); + + if (tport == NULL) + return 0; + + spin_lock_irqsave(&tport->tp_lock, flags); + room = kfifo_avail(&tport->write_fifo); + spin_unlock_irqrestore(&tport->tp_lock, flags); + + dbg("%s - returns %d", __func__, room); + return room; +} + + +static int ti_chars_in_buffer(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + int chars = 0; + unsigned long flags; + + dbg("%s - port %d", __func__, port->number); + + if (tport == NULL) + return 0; + + spin_lock_irqsave(&tport->tp_lock, flags); + chars = kfifo_len(&tport->write_fifo); + spin_unlock_irqrestore(&tport->tp_lock, flags); + + dbg("%s - returns %d", __func__, chars); + return chars; +} + + +static void ti_throttle(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + + dbg("%s - port %d", __func__, port->number); + + if (tport == NULL) + return; + + if (I_IXOFF(tty) || C_CRTSCTS(tty)) + ti_stop_read(tport, tty); + +} + + +static void ti_unthrottle(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + int status; + + dbg("%s - port %d", __func__, port->number); + + if (tport == NULL) + 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", + __func__, status); + } +} + +static int ti_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + struct async_icount cnow = tport->tp_icount; + + dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", + __func__, port->number, + cnow.rx, cnow.tx); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + +static int ti_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct usb_serial_port *port = tty->driver_data; + 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", __func__, port->number, cmd); + + if (tport == NULL) + return -ENODEV; + + switch (cmd) { + case TIOCGSERIAL: + dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); + return ti_get_serial_info(tport, + (struct serial_struct __user *)arg); + case TIOCSSERIAL: + dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); + return ti_set_serial_info(tty, tport, + (struct serial_struct __user *)arg); + case TIOCMIWAIT: + dbg("%s - (%d) TIOCMIWAIT", __func__, 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; + } + return -ENOIOCTLCMD; +} + + +static void ti_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) +{ + struct ti_port *tport = usb_get_serial_port_data(port); + 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", __func__, port->number); + + cflag = tty->termios->c_cflag; + iflag = tty->termios->c_iflag; + + dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag); + dbg("%s - old clfag %08x, old iflag %08x", __func__, + 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", __func__); + 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; + } + + /* CMSPAR isn't supported by this driver */ + tty->termios->c_cflag &= ~CMSPAR; + + 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); + + /* FIXME: Should calculate resulting baud here and report it back */ + if ((cflag & CBAUD) != B0) + tty_encode_baud_rate(tty, baud, baud); + + dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d", + __func__, 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", + __func__, 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", + __func__, port_number, status); + + kfree(config); +} + + +static int ti_tiocmget(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + unsigned int result; + unsigned int msr; + unsigned int mcr; + unsigned long flags; + + dbg("%s - port %d", __func__, port->number); + + if (tport == NULL) + return -ENODEV; + + spin_lock_irqsave(&tport->tp_lock, flags); + msr = tport->tp_msr; + mcr = tport->tp_shadow_mcr; + spin_unlock_irqrestore(&tport->tp_lock, flags); + + 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", __func__, result); + + return result; +} + + +static int ti_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + unsigned int mcr; + unsigned long flags; + + dbg("%s - port %d", __func__, port->number); + + if (tport == NULL) + return -ENODEV; + + spin_lock_irqsave(&tport->tp_lock, flags); + 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; + spin_unlock_irqrestore(&tport->tp_lock, flags); + + return ti_set_mcr(tport, mcr); +} + + +static void ti_break(struct tty_struct *tty, int break_state) +{ + struct usb_serial_port *port = tty->driver_data; + struct ti_port *tport = usb_get_serial_port_data(port); + int status; + + dbg("%s - state = %d", __func__, 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", __func__, status); +} + + +static void ti_interrupt_callback(struct urb *urb) +{ + struct ti_device *tdev = 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 = urb->status; + int retval; + __u8 msr; + + dbg("%s", __func__); + + switch (status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + dbg("%s - urb shutting down, %d", __func__, status); + tdev->td_urb_error = 1; + return; + default: + dev_err(dev, "%s - nonzero urb status, %d\n", + __func__, status); + tdev->td_urb_error = 1; + goto exit; + } + + if (length != 2) { + dbg("%s - bad packet size, %d", __func__, length); + goto exit; + } + + if (data[0] == TI_CODE_HARDWARE_ERROR) { + dev_err(dev, "%s - hardware error, %d\n", __func__, 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", + __func__, port_number, function, data[1]); + + if (port_number >= serial->num_ports) { + dev_err(dev, "%s - bad port number, %d\n", + __func__, 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", + __func__, port_number, data[1]); + break; + + case TI_CODE_MODEM_STATUS: + msr = data[1]; + dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr); + ti_handle_new_msr(tport, msr); + break; + + default: + dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", + __func__, data[1]); + break; + } + +exit: + retval = usb_submit_urb(urb, GFP_ATOMIC); + if (retval) + dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", + __func__, retval); +} + + +static void ti_bulk_in_callback(struct urb *urb) +{ + struct ti_port *tport = urb->context; + struct usb_serial_port *port = tport->tp_port; + struct device *dev = &urb->dev->dev; + int status = urb->status; + int retval = 0; + struct tty_struct *tty; + + dbg("%s", __func__); + + switch (status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + dbg("%s - urb shutting down, %d", __func__, 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", + __func__, status); + tport->tp_tdev->td_urb_error = 1; + wake_up_interruptible(&tport->tp_write_wait); + } + + if (status == -EPIPE) + goto exit; + + if (status) { + dev_err(dev, "%s - stopping read!\n", __func__); + return; + } + + tty = tty_port_tty_get(&port->port); + if (tty) { + if (urb->actual_length) { + usb_serial_debug_data(debug, dev, __func__, + urb->actual_length, urb->transfer_buffer); + + if (!tport->tp_is_open) + dbg("%s - port closed, dropping data", + __func__); + else + ti_recv(&urb->dev->dev, tty, + urb->transfer_buffer, + urb->actual_length); + spin_lock(&tport->tp_lock); + tport->tp_icount.rx += urb->actual_length; + spin_unlock(&tport->tp_lock); + } + tty_kref_put(tty); + } + +exit: + /* continue to read unless stopping */ + spin_lock(&tport->tp_lock); + if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) + retval = 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 (retval) + dev_err(dev, "%s - resubmit read urb failed, %d\n", + __func__, retval); +} + + +static void ti_bulk_out_callback(struct urb *urb) +{ + struct ti_port *tport = urb->context; + struct usb_serial_port *port = tport->tp_port; + int status = urb->status; + + dbg("%s - port %d", __func__, port->number); + + tport->tp_write_urb_in_use = 0; + + switch (status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + dbg("%s - urb shutting down, %d", __func__, status); + tport->tp_tdev->td_urb_error = 1; + wake_up_interruptible(&tport->tp_write_wait); + return; + default: + dev_err_console(port, "%s - nonzero urb status, %d\n", + __func__, 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 { + cnt = tty_insert_flip_string(tty, data, length); + if (cnt < length) { + dev_err(dev, "%s - dropping data, %d bytes lost\n", + __func__, length - cnt); + if (cnt == 0) + break; + } + tty_flip_buffer_push(tty); + data += cnt; + length -= cnt; + } while (length > 0); + +} + + +static void ti_send(struct ti_port *tport) +{ + int count, result; + struct usb_serial_port *port = tport->tp_port; + struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ + unsigned long flags; + + + dbg("%s - port %d", __func__, port->number); + + spin_lock_irqsave(&tport->tp_lock, flags); + + if (tport->tp_write_urb_in_use) + goto unlock; + + count = kfifo_out(&tport->write_fifo, + port->write_urb->transfer_buffer, + port->bulk_out_size); + + if (count == 0) + goto unlock; + + tport->tp_write_urb_in_use = 1; + + spin_unlock_irqrestore(&tport->tp_lock, flags); + + usb_serial_debug_data(debug, &port->dev, __func__, 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_console(port, "%s - submit write urb failed, %d\n", + __func__, 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); + tty_kref_put(tty); + wake_up_interruptible(&tport->tp_write_wait); + return; +unlock: + spin_unlock_irqrestore(&tport->tp_lock, flags); + tty_kref_put(tty); + return; +} + + +static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) +{ + unsigned long flags; + 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); + + spin_lock_irqsave(&tport->tp_lock, flags); + if (!status) + tport->tp_shadow_mcr = mcr; + spin_unlock_irqrestore(&tport->tp_lock, flags); + + 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", __func__, port->number); + + size = sizeof(struct ti_port_status); + data = kmalloc(size, GFP_KERNEL); + if (!data) { + dev_err(&port->dev, "%s - out of memory\n", __func__); + 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", + __func__, status); + goto free_data; + } + + dbg("%s - lsr 0x%02X", __func__, 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 tty_struct *tty, struct ti_port *tport, + struct serial_struct __user *new_arg) +{ + 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; + 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", __func__, 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 = tty_port_tty_get(&tport->tp_port->port); + if (tty && C_CRTSCTS(tty)) { + if (msr & TI_MSR_CTS) { + tty->hw_stopped = 0; + tty_wakeup(tty); + } else { + tty->hw_stopped = 1; + } + } + tty_kref_put(tty); +} + + +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; + + dbg("%s - port %d", __func__, port->number); + + spin_lock_irq(&tport->tp_lock); + + /* 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 (kfifo_len(&tport->write_fifo) == 0 + || timeout == 0 || signal_pending(current) + || tdev->td_urb_error + || port->serial->disconnected) /* disconnect */ + break; + spin_unlock_irq(&tport->tp_lock); + timeout = schedule_timeout(timeout); + spin_lock_irq(&tport->tp_lock); + } + set_current_state(TASK_RUNNING); + remove_wait_queue(&tport->tp_write_wait, &wait); + + /* flush any remaining data in the buffer */ + if (flush) + kfifo_reset_out(&tport->write_fifo); + + spin_unlock_irq(&tport->tp_lock); + + mutex_lock(&port->serial->disc_mutex); + /* 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 + && !port->serial->disconnected) { + if (ti_get_lsr(tport)) + break; + mutex_unlock(&port->serial->disc_mutex); + msleep_interruptible(20); + mutex_lock(&port->serial->disc_mutex); + } + mutex_unlock(&port->serial->disc_mutex); +} + + +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) { + tport->tp_read_urb_state = TI_READ_URB_RUNNING; + urb = tport->tp_port->read_urb; + spin_unlock_irqrestore(&tport->tp_lock, flags); + urb->context = tport; + status = usb_submit_urb(urb, GFP_KERNEL); + } else { + 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, 1000); + + 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, 1000); + + 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", + __func__, 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", __func__); + 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", __func__, status); + + kfree(data); + + return status; +} + +static int ti_do_download(struct usb_device *dev, int pipe, + u8 *buffer, int size) +{ + int pos; + u8 cs = 0; + int done; + struct ti_firmware_header *header; + int status = 0; + int len; + + for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) + cs = (__u8)(cs + buffer[pos]); + + header = (struct ti_firmware_header *)buffer; + header->wLength = cpu_to_le16((__u16)(size + - sizeof(struct ti_firmware_header))); + header->bCheckSum = cs; + + dbg("%s - downloading firmware", __func__); + for (pos = 0; pos < size; pos += done) { + len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); + status = usb_bulk_msg(dev, pipe, buffer + pos, len, + &done, 1000); + if (status) + break; + } + return status; +} + +static int ti_download_firmware(struct ti_device *tdev) +{ + int status; + int buffer_size; + __u8 *buffer; + struct usb_device *dev = tdev->td_serial->dev; + unsigned int pipe = usb_sndbulkpipe(dev, + tdev->td_serial->port[0]->bulk_out_endpointAddress); + const struct firmware *fw_p; + char buf[32]; + + dbg("%s\n", __func__); + /* try ID specific firmware first, then try generic firmware */ + sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor, + dev->descriptor.idProduct); + if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) { + buf[0] = '\0'; + if (dev->descriptor.idVendor == MTS_VENDOR_ID) { + switch (dev->descriptor.idProduct) { + case MTS_CDMA_PRODUCT_ID: + strcpy(buf, "mts_cdma.fw"); + break; + case MTS_GSM_PRODUCT_ID: + strcpy(buf, "mts_gsm.fw"); + break; + case MTS_EDGE_PRODUCT_ID: + strcpy(buf, "mts_edge.fw"); + break; + case MTS_MT9234MU_PRODUCT_ID: + strcpy(buf, "mts_mt9234mu.fw"); + break; + case MTS_MT9234ZBA_PRODUCT_ID: + strcpy(buf, "mts_mt9234zba.fw"); + break; + case MTS_MT9234ZBAOLD_PRODUCT_ID: + strcpy(buf, "mts_mt9234zba.fw"); + break; } + } + if (buf[0] == '\0') { + if (tdev->td_is_3410) + strcpy(buf, "ti_3410.fw"); + else + strcpy(buf, "ti_5052.fw"); + } + status = request_firmware(&fw_p, buf, &dev->dev); + } + if (status) { + dev_err(&dev->dev, "%s - firmware not found\n", __func__); + return -ENOENT; + } + if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { + dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); + release_firmware(fw_p); + return -ENOENT; + } + + buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); + buffer = kmalloc(buffer_size, GFP_KERNEL); + if (buffer) { + memcpy(buffer, fw_p->data, fw_p->size); + memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); + status = ti_do_download(dev, pipe, buffer, fw_p->size); + kfree(buffer); + } else { + dbg("%s ENOMEM\n", __func__); + status = -ENOMEM; + } + release_firmware(fw_p); + if (status) { + dev_err(&dev->dev, "%s - error downloading firmware, %d\n", + __func__, status); + return status; + } + + dbg("%s - download successful", __func__); + + return 0; +} |