From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/usb/serial/ti_usb_3410_5052.c | 1518 ++++++++++++++++++++++++++ 1 file changed, 1518 insertions(+) create mode 100644 kernel/drivers/usb/serial/ti_usb_3410_5052.c (limited to 'kernel/drivers/usb/serial/ti_usb_3410_5052.c') diff --git a/kernel/drivers/usb/serial/ti_usb_3410_5052.c b/kernel/drivers/usb/serial/ti_usb_3410_5052.c new file mode 100644 index 000000000..e9da41d9f --- /dev/null +++ b/kernel/drivers/usb/serial/ti_usb_3410_5052.c @@ -0,0 +1,1518 @@ +/* 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 , or + * Peter Berger . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ti_usb_3410_5052.h" + +/* Defines */ + +#define TI_DRIVER_AUTHOR "Al Borchers " +#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" + +#define TI_FIRMWARE_BUF_SIZE 16284 + +#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_shadow_mcr; + __u8 tp_uart_mode; /* 232 or 485 modes */ + unsigned int tp_uart_base_addr; + int tp_flags; + 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 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_port_probe(struct usb_serial_port *port); +static int ti_port_remove(struct usb_serial_port *port); +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 bool ti_tx_empty(struct usb_serial_port *port); +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 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 usb_serial_port *port, 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, u8 *lsr); +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_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 usb_serial_port *port, struct ti_device *tdev, + unsigned long addr, __u8 mask, __u8 byte); + +static int ti_download_firmware(struct ti_device *tdev); + + +/* Data */ + +/* module parameters */ +static int closing_wait = TI_DEFAULT_CLOSING_WAIT; + +/* supported devices */ +static const struct usb_device_id ti_id_table_3410[] = { + { 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_STEREO_PLUG_ID) }, + { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, + { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, + { } /* terminator */ +}; + +static const struct usb_device_id ti_id_table_5052[] = { + { 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) }, + { } /* terminator */ +}; + +static const struct usb_device_id ti_id_table_combined[] = { + { 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(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, + { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, + { } /* terminator */ +}; + +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, + .port_probe = ti_port_probe, + .port_remove = ti_port_remove, + .open = ti_open, + .close = ti_close, + .write = ti_write, + .write_room = ti_write_room, + .chars_in_buffer = ti_chars_in_buffer, + .tx_empty = ti_tx_empty, + .throttle = ti_throttle, + .unthrottle = ti_unthrottle, + .ioctl = ti_ioctl, + .set_termios = ti_set_termios, + .tiocmget = ti_tiocmget, + .tiocmset = ti_tiocmset, + .tiocmiwait = usb_serial_generic_tiocmiwait, + .get_icount = usb_serial_generic_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, + .port_probe = ti_port_probe, + .port_remove = ti_port_remove, + .open = ti_open, + .close = ti_close, + .write = ti_write, + .write_room = ti_write_room, + .chars_in_buffer = ti_chars_in_buffer, + .tx_empty = ti_tx_empty, + .throttle = ti_throttle, + .unthrottle = ti_unthrottle, + .ioctl = ti_ioctl, + .set_termios = ti_set_termios, + .tiocmget = ti_tiocmget, + .tiocmset = ti_tiocmset, + .tiocmiwait = usb_serial_generic_tiocmiwait, + .get_icount = usb_serial_generic_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_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(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_DEVICE_TABLE(usb, ti_id_table_combined); + +module_usb_serial_driver(serial_drivers, ti_id_table_combined); + +/* Functions */ + +static int ti_startup(struct usb_serial *serial) +{ + struct ti_device *tdev; + struct usb_device *dev = serial->dev; + int status; + + dev_dbg(&dev->dev, + "%s - product 0x%4X, num configurations %d, configuration value %d\n", + __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) + return -ENOMEM; + + mutex_init(&tdev->td_open_close_lock); + tdev->td_serial = serial; + usb_set_serial_data(serial, tdev); + + /* determine device type */ + if (serial->type == &ti_1port_device) + tdev->td_is_3410 = 1; + dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, + tdev->td_is_3410 ? "3410" : "5052"); + + /* if we have only 1 configuration, download firmware */ + if (dev->descriptor.bNumConfigurations == 1) { + status = ti_download_firmware(tdev); + + if (status != 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; + } + + return 0; + +free_tdev: + kfree(tdev); + usb_set_serial_data(serial, NULL); + return status; +} + + +static void ti_release(struct usb_serial *serial) +{ + struct ti_device *tdev = usb_get_serial_data(serial); + + kfree(tdev); +} + +static int ti_port_probe(struct usb_serial_port *port) +{ + struct ti_port *tport; + + tport = kzalloc(sizeof(*tport), GFP_KERNEL); + if (!tport) + return -ENOMEM; + + spin_lock_init(&tport->tp_lock); + if (port == port->serial->port[0]) + tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; + else + tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; + port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); + tport->tp_port = port; + tport->tp_tdev = usb_get_serial_data(port->serial); + tport->tp_uart_mode = 0; /* default is RS232 */ + + usb_set_serial_port_data(port, tport); + + port->port.drain_delay = 3; + + return 0; +} + +static int ti_port_remove(struct usb_serial_port *port) +{ + struct ti_port *tport; + + tport = usb_get_serial_port_data(port); + kfree(tport); + + return 0; +} + +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)); + + 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->port_number; + + 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) { + dev_dbg(&port->dev, "%s - start interrupt in urb\n", __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); + + dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __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; + } + + dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __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; + } + + dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __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); + + dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __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; + } + + dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __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 */ + dev_dbg(&port->dev, "%s - start read urb\n", __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); + dev_dbg(&port->dev, "%s - exit %d\n", __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; + unsigned long flags; + + 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; + + usb_kill_urb(port->read_urb); + usb_kill_urb(port->write_urb); + tport->tp_write_urb_in_use = 0; + spin_lock_irqsave(&tport->tp_lock, flags); + kfifo_reset_out(&port->write_fifo); + spin_unlock_irqrestore(&tport->tp_lock, flags); + + port_number = port->port_number; + + dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __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); +} + + +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); + + if (count == 0) { + dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); + return 0; + } + + if (tport == NULL || !tport->tp_is_open) + return -ENODEV; + + count = kfifo_in_locked(&port->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; + + if (tport == NULL) + return 0; + + spin_lock_irqsave(&tport->tp_lock, flags); + room = kfifo_avail(&port->write_fifo); + spin_unlock_irqrestore(&tport->tp_lock, flags); + + dev_dbg(&port->dev, "%s - returns %d\n", __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; + + if (tport == NULL) + return 0; + + spin_lock_irqsave(&tport->tp_lock, flags); + chars = kfifo_len(&port->write_fifo); + spin_unlock_irqrestore(&tport->tp_lock, flags); + + dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); + return chars; +} + +static bool ti_tx_empty(struct usb_serial_port *port) +{ + struct ti_port *tport = usb_get_serial_port_data(port); + int ret; + u8 lsr; + + ret = ti_get_lsr(tport, &lsr); + if (!ret && !(lsr & TI_LSR_TX_EMPTY)) + return false; + + return true; +} + +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); + + 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; + + 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_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); + + if (tport == NULL) + return -ENODEV; + + switch (cmd) { + case TIOCGSERIAL: + dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); + return ti_get_serial_info(tport, + (struct serial_struct __user *)arg); + case TIOCSSERIAL: + dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__); + return ti_set_serial_info(tty, tport, + (struct serial_struct __user *)arg); + } + 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->port_number; + unsigned int mcr; + + cflag = tty->termios.c_cflag; + iflag = tty->termios.c_iflag; + + dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag); + dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__, + old_termios->c_cflag, old_termios->c_iflag); + + if (tport == NULL) + return; + + config = kmalloc(sizeof(*config), GFP_KERNEL); + if (!config) + 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 { + 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); + + dev_dbg(&port->dev, + "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", + __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; + + 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); + + dev_dbg(&port->dev, "%s - 0x%04X\n", __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; + + 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; + + dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); + + if (tport == NULL) + return; + + status = ti_write_byte(port, tport->tp_tdev, + tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, + TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); + + if (status) + dev_dbg(&port->dev, "%s - error setting break, %d\n", __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; + + switch (status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + dev_dbg(dev, "%s - urb shutting down, %d\n", __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) { + dev_dbg(dev, "%s - bad packet size, %d\n", __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]); + + dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", + __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]; + dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __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; + + switch (status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); + tport->tp_tdev->td_urb_error = 1; + return; + default: + dev_err(dev, "%s - nonzero urb status, %d\n", + __func__, status); + tport->tp_tdev->td_urb_error = 1; + } + + if (status == -EPIPE) + goto exit; + + if (status) { + dev_err(dev, "%s - stopping read!\n", __func__); + return; + } + + if (urb->actual_length) { + usb_serial_debug_data(dev, __func__, urb->actual_length, + urb->transfer_buffer); + + if (!tport->tp_is_open) + dev_dbg(dev, "%s - port closed, dropping data\n", + __func__); + else + ti_recv(port, urb->transfer_buffer, urb->actual_length); + spin_lock(&tport->tp_lock); + port->icount.rx += urb->actual_length; + spin_unlock(&tport->tp_lock); + } + +exit: + /* continue to read unless stopping */ + spin_lock(&tport->tp_lock); + if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) + 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; + + tport->tp_write_urb_in_use = 0; + + switch (status) { + case 0: + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); + tport->tp_tdev->td_urb_error = 1; + return; + default: + dev_err_console(port, "%s - nonzero urb status, %d\n", + __func__, status); + tport->tp_tdev->td_urb_error = 1; + } + + /* send any buffered data */ + ti_send(tport); +} + + +static void ti_recv(struct usb_serial_port *port, unsigned char *data, + int length) +{ + int cnt; + + do { + cnt = tty_insert_flip_string(&port->port, data, length); + if (cnt < length) { + dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", + __func__, length - cnt); + if (cnt == 0) + break; + } + tty_flip_buffer_push(&port->port); + 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; + unsigned long flags; + + spin_lock_irqsave(&tport->tp_lock, flags); + + if (tport->tp_write_urb_in_use) + goto unlock; + + count = kfifo_out(&port->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(&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); + port->icount.tx += count; + spin_unlock_irqrestore(&tport->tp_lock, flags); + } + + /* more room in the buffer for new writes, wakeup */ + tty_port_tty_wakeup(&port->port); + + return; +unlock: + spin_unlock_irqrestore(&tport->tp_lock, flags); + return; +} + + +static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) +{ + unsigned long flags; + int status; + + status = ti_write_byte(tport->tp_port, 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, u8 *lsr) +{ + int size, status; + struct ti_device *tdev = tport->tp_tdev; + struct usb_serial_port *port = tport->tp_port; + int port_number = port->port_number; + struct ti_port_status *data; + + size = sizeof(struct ti_port_status); + data = kmalloc(size, GFP_KERNEL); + if (!data) + 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; + } + + dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); + + *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; + unsigned cwait; + + if (!ret_arg) + return -EFAULT; + + cwait = port->port.closing_wait; + if (cwait != ASYNC_CLOSING_WAIT_NONE) + cwait = jiffies_to_msecs(cwait) / 10; + + memset(&ret_serial, 0, sizeof(ret_serial)); + + ret_serial.type = PORT_16550A; + ret_serial.line = port->minor; + ret_serial.port = port->port_number; + ret_serial.flags = tport->tp_flags; + ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo); + ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; + ret_serial.closing_wait = cwait; + + 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; + unsigned cwait; + + if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) + return -EFAULT; + + cwait = new_serial.closing_wait; + if (cwait != ASYNC_CLOSING_WAIT_NONE) + cwait = msecs_to_jiffies(10 * new_serial.closing_wait); + + tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS; + tport->tp_port->port.closing_wait = cwait; + + 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; + + dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); + + if (msr & TI_MSR_DELTA_MASK) { + spin_lock_irqsave(&tport->tp_lock, flags); + icount = &tport->tp_port->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_port->port.delta_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_wakeup(tty); + } + tty_kref_put(tty); +} + + +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 usb_serial_port *port, + struct ti_device *tdev, unsigned long addr, + __u8 mask, __u8 byte) +{ + int status; + unsigned int size; + struct ti_write_data_bytes *data; + + dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, + addr, mask, byte); + + size = sizeof(struct ti_write_data_bytes) + 2; + data = kmalloc(size, GFP_KERNEL); + if (!data) + 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(&port->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; + + dev_dbg(&dev->dev, "%s - downloading firmware\n", __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]; + + /* try ID specific firmware first, then try generic firmware */ + sprintf(buf, "ti_usb-v%04x-p%04x.fw", + le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct)); + status = request_firmware(&fw_p, buf, &dev->dev); + + if (status != 0) { + buf[0] = '\0'; + if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { + switch (le16_to_cpu(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 { + status = -ENOMEM; + } + release_firmware(fw_p); + if (status) { + dev_err(&dev->dev, "%s - error downloading firmware, %d\n", + __func__, status); + return status; + } + + dev_dbg(&dev->dev, "%s - download successful\n", __func__); + + return 0; +} -- cgit 1.2.3-korg