drivers/usb/serial/ti_usb_3410_5052.c

   1 /*
   2  * TI 3410/5052 USB Serial Driver
   3  *
   4  * Copyright (C) 2004 Texas Instruments
   5  *
   6  * This driver is based on the Linux io_ti driver, which is
   7  *   Copyright (C) 2000-2002 Inside Out Networks
   8  *   Copyright (C) 2001-2002 Greg Kroah-Hartman
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * For questions or problems with this driver, contact Texas Instruments
  16  * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
  17  * Peter Berger <pberger@brimson.com>.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/errno.h>
  22 #include <linux/firmware.h>
  23 #include <linux/slab.h>
  24 #include <linux/tty.h>
  25 #include <linux/tty_driver.h>
  26 #include <linux/tty_flip.h>
  27 #include <linux/module.h>
  28 #include <linux/spinlock.h>
  29 #include <linux/ioctl.h>
  30 #include <linux/serial.h>
  31 #include <linux/kfifo.h>
  32 #include <linux/mutex.h>
  33 #include <linux/uaccess.h>
  34 #include <linux/usb.h>
  35 #include <linux/usb/serial.h>
  36
  37 /* Configuration ids */
  38 #define TI_BOOT_CONFIG                  1
  39 #define TI_ACTIVE_CONFIG                2
  40
  41 /* Vendor and product ids */
  42 #define TI_VENDOR_ID                    0x0451
  43 #define IBM_VENDOR_ID                   0x04b3
  44 #define TI_3410_PRODUCT_ID              0x3410
  45 #define IBM_4543_PRODUCT_ID             0x4543
  46 #define IBM_454B_PRODUCT_ID             0x454b
  47 #define IBM_454C_PRODUCT_ID             0x454c
  48 #define TI_3410_EZ430_ID                0xF430  /* TI ez430 development tool */
  49 #define TI_5052_BOOT_PRODUCT_ID         0x5052  /* no EEPROM, no firmware */
  50 #define TI_5152_BOOT_PRODUCT_ID         0x5152  /* no EEPROM, no firmware */
  51 #define TI_5052_EEPROM_PRODUCT_ID       0x505A  /* EEPROM, no firmware */
  52 #define TI_5052_FIRMWARE_PRODUCT_ID     0x505F  /* firmware is running */
  53 #define FRI2_PRODUCT_ID                 0x5053  /* Fish River Island II */
  54
  55 /* Multi-Tech vendor and product ids */
  56 #define MTS_VENDOR_ID                   0x06E0
  57 #define MTS_GSM_NO_FW_PRODUCT_ID        0xF108
  58 #define MTS_CDMA_NO_FW_PRODUCT_ID       0xF109
  59 #define MTS_CDMA_PRODUCT_ID             0xF110
  60 #define MTS_GSM_PRODUCT_ID              0xF111
  61 #define MTS_EDGE_PRODUCT_ID             0xF112
  62 #define MTS_MT9234MU_PRODUCT_ID         0xF114
  63 #define MTS_MT9234ZBA_PRODUCT_ID        0xF115
  64 #define MTS_MT9234ZBAOLD_PRODUCT_ID     0x0319
  65
  66 /* Abbott Diabetics vendor and product ids */
  67 #define ABBOTT_VENDOR_ID                0x1a61
  68 #define ABBOTT_STEREO_PLUG_ID           0x3410
  69 #define ABBOTT_PRODUCT_ID               ABBOTT_STEREO_PLUG_ID
  70 #define ABBOTT_STRIP_PORT_ID            0x3420
  71
  72 /* Honeywell vendor and product IDs */
  73 #define HONEYWELL_VENDOR_ID             0x10ac
  74 #define HONEYWELL_HGI80_PRODUCT_ID      0x0102  /* Honeywell HGI80 */
  75
  76 /* Moxa UPORT 11x0 vendor and product IDs */
  77 #define MXU1_VENDOR_ID                          0x110a
  78 #define MXU1_1110_PRODUCT_ID                    0x1110
  79 #define MXU1_1130_PRODUCT_ID                    0x1130
  80 #define MXU1_1150_PRODUCT_ID                    0x1150
  81 #define MXU1_1151_PRODUCT_ID                    0x1151
  82 #define MXU1_1131_PRODUCT_ID                    0x1131
  83
  84 /* Commands */
  85 #define TI_GET_VERSION                  0x01
  86 #define TI_GET_PORT_STATUS              0x02
  87 #define TI_GET_PORT_DEV_INFO            0x03
  88 #define TI_GET_CONFIG                   0x04
  89 #define TI_SET_CONFIG                   0x05
  90 #define TI_OPEN_PORT                    0x06
  91 #define TI_CLOSE_PORT                   0x07
  92 #define TI_START_PORT                   0x08
  93 #define TI_STOP_PORT                    0x09
  94 #define TI_TEST_PORT                    0x0A
  95 #define TI_PURGE_PORT                   0x0B
  96 #define TI_RESET_EXT_DEVICE             0x0C
  97 #define TI_WRITE_DATA                   0x80
  98 #define TI_READ_DATA                    0x81
  99 #define TI_REQ_TYPE_CLASS               0x82
 100
 101 /* Module identifiers */
 102 #define TI_I2C_PORT                     0x01
 103 #define TI_IEEE1284_PORT                0x02
 104 #define TI_UART1_PORT                   0x03
 105 #define TI_UART2_PORT                   0x04
 106 #define TI_RAM_PORT                     0x05
 107
 108 /* Modem status */
 109 #define TI_MSR_DELTA_CTS                0x01
 110 #define TI_MSR_DELTA_DSR                0x02
 111 #define TI_MSR_DELTA_RI                 0x04
 112 #define TI_MSR_DELTA_CD                 0x08
 113 #define TI_MSR_CTS                      0x10
 114 #define TI_MSR_DSR                      0x20
 115 #define TI_MSR_RI                       0x40
 116 #define TI_MSR_CD                       0x80
 117 #define TI_MSR_DELTA_MASK               0x0F
 118 #define TI_MSR_MASK                     0xF0
 119
 120 /* Line status */
 121 #define TI_LSR_OVERRUN_ERROR            0x01
 122 #define TI_LSR_PARITY_ERROR             0x02
 123 #define TI_LSR_FRAMING_ERROR            0x04
 124 #define TI_LSR_BREAK                    0x08
 125 #define TI_LSR_ERROR                    0x0F
 126 #define TI_LSR_RX_FULL                  0x10
 127 #define TI_LSR_TX_EMPTY                 0x20
 128
 129 /* Line control */
 130 #define TI_LCR_BREAK                    0x40
 131
 132 /* Modem control */
 133 #define TI_MCR_LOOP                     0x04
 134 #define TI_MCR_DTR                      0x10
 135 #define TI_MCR_RTS                      0x20
 136
 137 /* Mask settings */
 138 #define TI_UART_ENABLE_RTS_IN           0x0001
 139 #define TI_UART_DISABLE_RTS             0x0002
 140 #define TI_UART_ENABLE_PARITY_CHECKING  0x0008
 141 #define TI_UART_ENABLE_DSR_OUT          0x0010
 142 #define TI_UART_ENABLE_CTS_OUT          0x0020
 143 #define TI_UART_ENABLE_X_OUT            0x0040
 144 #define TI_UART_ENABLE_XA_OUT           0x0080
 145 #define TI_UART_ENABLE_X_IN             0x0100
 146 #define TI_UART_ENABLE_DTR_IN           0x0800
 147 #define TI_UART_DISABLE_DTR             0x1000
 148 #define TI_UART_ENABLE_MS_INTS          0x2000
 149 #define TI_UART_ENABLE_AUTO_START_DMA   0x4000
 150
 151 /* Parity */
 152 #define TI_UART_NO_PARITY               0x00
 153 #define TI_UART_ODD_PARITY              0x01
 154 #define TI_UART_EVEN_PARITY             0x02
 155 #define TI_UART_MARK_PARITY             0x03
 156 #define TI_UART_SPACE_PARITY            0x04
 157
 158 /* Stop bits */
 159 #define TI_UART_1_STOP_BITS             0x00
 160 #define TI_UART_1_5_STOP_BITS           0x01
 161 #define TI_UART_2_STOP_BITS             0x02
 162
 163 /* Bits per character */
 164 #define TI_UART_5_DATA_BITS             0x00
 165 #define TI_UART_6_DATA_BITS             0x01
 166 #define TI_UART_7_DATA_BITS             0x02
 167 #define TI_UART_8_DATA_BITS             0x03
 168
 169 /* 232/485 modes */
 170 #define TI_UART_232                     0x00
 171 #define TI_UART_485_RECEIVER_DISABLED   0x01
 172 #define TI_UART_485_RECEIVER_ENABLED    0x02
 173
 174 /* Pipe transfer mode and timeout */
 175 #define TI_PIPE_MODE_CONTINUOUS         0x01
 176 #define TI_PIPE_MODE_MASK               0x03
 177 #define TI_PIPE_TIMEOUT_MASK            0x7C
 178 #define TI_PIPE_TIMEOUT_ENABLE          0x80
 179
 180 /* Config struct */
 181 struct ti_uart_config {
 182         __be16  wBaudRate;
 183         __be16  wFlags;
 184         u8      bDataBits;
 185         u8      bParity;
 186         u8      bStopBits;
 187         char    cXon;
 188         char    cXoff;
 189         u8      bUartMode;
 190 } __packed;
 191
 192 /* Get port status */
 193 struct ti_port_status {
 194         u8 bCmdCode;
 195         u8 bModuleId;
 196         u8 bErrorCode;
 197         u8 bMSR;
 198         u8 bLSR;
 199 } __packed;
 200
 201 /* Purge modes */
 202 #define TI_PURGE_OUTPUT                 0x00
 203 #define TI_PURGE_INPUT                  0x80
 204
 205 /* Read/Write data */
 206 #define TI_RW_DATA_ADDR_SFR             0x10
 207 #define TI_RW_DATA_ADDR_IDATA           0x20
 208 #define TI_RW_DATA_ADDR_XDATA           0x30
 209 #define TI_RW_DATA_ADDR_CODE            0x40
 210 #define TI_RW_DATA_ADDR_GPIO            0x50
 211 #define TI_RW_DATA_ADDR_I2C             0x60
 212 #define TI_RW_DATA_ADDR_FLASH           0x70
 213 #define TI_RW_DATA_ADDR_DSP             0x80
 214
 215 #define TI_RW_DATA_UNSPECIFIED          0x00
 216 #define TI_RW_DATA_BYTE                 0x01
 217 #define TI_RW_DATA_WORD                 0x02
 218 #define TI_RW_DATA_DOUBLE_WORD          0x04
 219
 220 struct ti_write_data_bytes {
 221         u8      bAddrType;
 222         u8      bDataType;
 223         u8      bDataCounter;
 224         __be16  wBaseAddrHi;
 225         __be16  wBaseAddrLo;
 226         u8      bData[0];
 227 } __packed;
 228
 229 struct ti_read_data_request {
 230         __u8    bAddrType;
 231         __u8    bDataType;
 232         __u8    bDataCounter;
 233         __be16  wBaseAddrHi;
 234         __be16  wBaseAddrLo;
 235 } __packed;
 236
 237 struct ti_read_data_bytes {
 238         __u8    bCmdCode;
 239         __u8    bModuleId;
 240         __u8    bErrorCode;
 241         __u8    bData[0];
 242 } __packed;
 243
 244 /* Interrupt struct */
 245 struct ti_interrupt {
 246         __u8    bICode;
 247         __u8    bIInfo;
 248 } __packed;
 249
 250 /* Interrupt codes */
 251 #define TI_CODE_HARDWARE_ERROR          0xFF
 252 #define TI_CODE_DATA_ERROR              0x03
 253 #define TI_CODE_MODEM_STATUS            0x04
 254
 255 /* Download firmware max packet size */
 256 #define TI_DOWNLOAD_MAX_PACKET_SIZE     64
 257
 258 /* Firmware image header */
 259 struct ti_firmware_header {
 260         __le16  wLength;
 261         u8      bCheckSum;
 262 } __packed;
 263
 264 /* UART addresses */
 265 #define TI_UART1_BASE_ADDR              0xFFA0  /* UART 1 base address */
 266 #define TI_UART2_BASE_ADDR              0xFFB0  /* UART 2 base address */
 267 #define TI_UART_OFFSET_LCR              0x0002  /* UART MCR register offset */
 268 #define TI_UART_OFFSET_MCR              0x0004  /* UART MCR register offset */
 269
 270 #define TI_DRIVER_AUTHOR        "Al Borchers <alborchers@steinerpoint.com>"
 271 #define TI_DRIVER_DESC          "TI USB 3410/5052 Serial Driver"
 272
 273 #define TI_FIRMWARE_BUF_SIZE    16284
 274
 275 #define TI_TRANSFER_TIMEOUT     2
 276
 277 #define TI_DEFAULT_CLOSING_WAIT 4000            /* in .01 secs */
 278
 279 /* read urb states */
 280 #define TI_READ_URB_RUNNING     0
 281 #define TI_READ_URB_STOPPING    1
 282 #define TI_READ_URB_STOPPED     2
 283
 284 #define TI_EXTRA_VID_PID_COUNT  5
 285
 286 struct ti_port {
 287         int                     tp_is_open;
 288         u8                      tp_msr;
 289         u8                      tp_shadow_mcr;
 290         u8                      tp_uart_mode;   /* 232 or 485 modes */
 291         unsigned int            tp_uart_base_addr;
 292         struct ti_device        *tp_tdev;
 293         struct usb_serial_port  *tp_port;
 294         spinlock_t              tp_lock;
 295         int                     tp_read_urb_state;
 296         int                     tp_write_urb_in_use;
 297 };
 298
 299 struct ti_device {
 300         struct mutex            td_open_close_lock;
 301         int                     td_open_port_count;
 302         struct usb_serial       *td_serial;
 303         int                     td_is_3410;
 304         bool                    td_rs485_only;
 305 };
 306
 307 static int ti_startup(struct usb_serial *serial);
 308 static void ti_release(struct usb_serial *serial);
 309 static int ti_port_probe(struct usb_serial_port *port);
 310 static int ti_port_remove(struct usb_serial_port *port);
 311 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
 312 static void ti_close(struct usb_serial_port *port);
 313 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
 314                 const unsigned char *data, int count);
 315 static int ti_write_room(struct tty_struct *tty);
 316 static int ti_chars_in_buffer(struct tty_struct *tty);
 317 static bool ti_tx_empty(struct usb_serial_port *port);
 318 static void ti_throttle(struct tty_struct *tty);
 319 static void ti_unthrottle(struct tty_struct *tty);
 320 static int ti_ioctl(struct tty_struct *tty,
 321                 unsigned int cmd, unsigned long arg);
 322 static void ti_set_termios(struct tty_struct *tty,
 323                 struct usb_serial_port *port, struct ktermios *old_termios);
 324 static int ti_tiocmget(struct tty_struct *tty);
 325 static int ti_tiocmset(struct tty_struct *tty,
 326                 unsigned int set, unsigned int clear);
 327 static void ti_break(struct tty_struct *tty, int break_state);
 328 static void ti_interrupt_callback(struct urb *urb);
 329 static void ti_bulk_in_callback(struct urb *urb);
 330 static void ti_bulk_out_callback(struct urb *urb);
 331
 332 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
 333                 int length);
 334 static void ti_send(struct ti_port *tport);
 335 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
 336 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
 337 static int ti_get_serial_info(struct ti_port *tport,
 338         struct serial_struct __user *ret_arg);
 339 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
 340         struct serial_struct __user *new_arg);
 341 static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
 342
 343 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
 344 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
 345
 346 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
 347         __u16 moduleid, __u16 value, __u8 *data, int size);
 348 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
 349         __u16 moduleid, __u16 value, __u8 *data, int size);
 350
 351 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
 352                          unsigned long addr, u8 mask, u8 byte);
 353
 354 static int ti_download_firmware(struct ti_device *tdev);
 355
 356 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
 357
 358 static const struct usb_device_id ti_id_table_3410[] = {
 359         { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
 360         { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
 361         { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
 362         { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
 363         { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
 364         { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
 365         { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
 366         { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
 367         { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
 368         { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
 369         { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
 370         { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
 371         { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
 372         { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
 373         { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
 374         { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
 375         { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
 376         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
 377         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
 378         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
 379         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
 380         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
 381         { }     /* terminator */
 382 };
 383
 384 static const struct usb_device_id ti_id_table_5052[] = {
 385         { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
 386         { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
 387         { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
 388         { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
 389         { }
 390 };
 391
 392 static const struct usb_device_id ti_id_table_combined[] = {
 393         { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
 394         { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
 395         { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
 396         { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
 397         { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
 398         { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
 399         { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
 400         { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
 401         { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
 402         { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
 403         { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
 404         { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
 405         { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
 406         { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
 407         { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
 408         { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
 409         { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
 410         { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
 411         { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
 412         { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
 413         { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
 414         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
 415         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
 416         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
 417         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
 418         { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
 419         { }     /* terminator */
 420 };
 421
 422 static struct usb_serial_driver ti_1port_device = {
 423         .driver = {
 424                 .owner          = THIS_MODULE,
 425                 .name           = "ti_usb_3410_5052_1",
 426         },
 427         .description            = "TI USB 3410 1 port adapter",
 428         .id_table               = ti_id_table_3410,
 429         .num_ports              = 1,
 430         .attach                 = ti_startup,
 431         .release                = ti_release,
 432         .port_probe             = ti_port_probe,
 433         .port_remove            = ti_port_remove,
 434         .open                   = ti_open,
 435         .close                  = ti_close,
 436         .write                  = ti_write,
 437         .write_room             = ti_write_room,
 438         .chars_in_buffer        = ti_chars_in_buffer,
 439         .tx_empty               = ti_tx_empty,
 440         .throttle               = ti_throttle,
 441         .unthrottle             = ti_unthrottle,
 442         .ioctl                  = ti_ioctl,
 443         .set_termios            = ti_set_termios,
 444         .tiocmget               = ti_tiocmget,
 445         .tiocmset               = ti_tiocmset,
 446         .tiocmiwait             = usb_serial_generic_tiocmiwait,
 447         .get_icount             = usb_serial_generic_get_icount,
 448         .break_ctl              = ti_break,
 449         .read_int_callback      = ti_interrupt_callback,
 450         .read_bulk_callback     = ti_bulk_in_callback,
 451         .write_bulk_callback    = ti_bulk_out_callback,
 452 };
 453
 454 static struct usb_serial_driver ti_2port_device = {
 455         .driver = {
 456                 .owner          = THIS_MODULE,
 457                 .name           = "ti_usb_3410_5052_2",
 458         },
 459         .description            = "TI USB 5052 2 port adapter",
 460         .id_table               = ti_id_table_5052,
 461         .num_ports              = 2,
 462         .attach                 = ti_startup,
 463         .release                = ti_release,
 464         .port_probe             = ti_port_probe,
 465         .port_remove            = ti_port_remove,
 466         .open                   = ti_open,
 467         .close                  = ti_close,
 468         .write                  = ti_write,
 469         .write_room             = ti_write_room,
 470         .chars_in_buffer        = ti_chars_in_buffer,
 471         .tx_empty               = ti_tx_empty,
 472         .throttle               = ti_throttle,
 473         .unthrottle             = ti_unthrottle,
 474         .ioctl                  = ti_ioctl,
 475         .set_termios            = ti_set_termios,
 476         .tiocmget               = ti_tiocmget,
 477         .tiocmset               = ti_tiocmset,
 478         .tiocmiwait             = usb_serial_generic_tiocmiwait,
 479         .get_icount             = usb_serial_generic_get_icount,
 480         .break_ctl              = ti_break,
 481         .read_int_callback      = ti_interrupt_callback,
 482         .read_bulk_callback     = ti_bulk_in_callback,
 483         .write_bulk_callback    = ti_bulk_out_callback,
 484 };
 485
 486 static struct usb_serial_driver * const serial_drivers[] = {
 487         &ti_1port_device, &ti_2port_device, NULL
 488 };
 489
 490 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
 491 MODULE_DESCRIPTION(TI_DRIVER_DESC);
 492 MODULE_LICENSE("GPL");
 493
 494 /*(DEBLOBBED)*/
 495
 496 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
 497 MODULE_PARM_DESC(closing_wait,
 498     "Maximum wait for data to drain in close, in .01 secs, default is 4000");
 499
 500 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
 501
 502 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
 503
 504 static int ti_startup(struct usb_serial *serial)
 505 {
 506         struct ti_device *tdev;
 507         struct usb_device *dev = serial->dev;
 508         struct usb_host_interface *cur_altsetting;
 509         int num_endpoints;
 510         u16 vid, pid;
 511         int status;
 512
 513         dev_dbg(&dev->dev,
 514                 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
 515                 __func__, le16_to_cpu(dev->descriptor.idProduct),
 516                 dev->descriptor.bNumConfigurations,
 517                 dev->actconfig->desc.bConfigurationValue);
 518
 519         tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
 520         if (!tdev)
 521                 return -ENOMEM;
 522
 523         mutex_init(&tdev->td_open_close_lock);
 524         tdev->td_serial = serial;
 525         usb_set_serial_data(serial, tdev);
 526
 527         /* determine device type */
 528         if (serial->type == &ti_1port_device)
 529                 tdev->td_is_3410 = 1;
 530         dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
 531                 tdev->td_is_3410 ? "3410" : "5052");
 532
 533         vid = le16_to_cpu(dev->descriptor.idVendor);
 534         pid = le16_to_cpu(dev->descriptor.idProduct);
 535         if (vid == MXU1_VENDOR_ID) {
 536                 switch (pid) {
 537                 case MXU1_1130_PRODUCT_ID:
 538                 case MXU1_1131_PRODUCT_ID:
 539                         tdev->td_rs485_only = true;
 540                         break;
 541                 }
 542         }
 543
 544         cur_altsetting = serial->interface->cur_altsetting;
 545         num_endpoints = cur_altsetting->desc.bNumEndpoints;
 546
 547         /* if we have only 1 configuration and 1 endpoint, download firmware */
 548         if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
 549                 status = ti_download_firmware(tdev);
 550
 551                 if (status != 0)
 552                         goto free_tdev;
 553
 554                 /* 3410 must be reset, 5052 resets itself */
 555                 if (tdev->td_is_3410) {
 556                         msleep_interruptible(100);
 557                         usb_reset_device(dev);
 558                 }
 559
 560                 status = -ENODEV;
 561                 goto free_tdev;
 562         }
 563
 564         /* the second configuration must be set */
 565         if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
 566                 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
 567                 status = status ? status : -ENODEV;
 568                 goto free_tdev;
 569         }
 570
 571         return 0;
 572
 573 free_tdev:
 574         kfree(tdev);
 575         usb_set_serial_data(serial, NULL);
 576         return status;
 577 }
 578
 579
 580 static void ti_release(struct usb_serial *serial)
 581 {
 582         struct ti_device *tdev = usb_get_serial_data(serial);
 583
 584         kfree(tdev);
 585 }
 586
 587 static int ti_port_probe(struct usb_serial_port *port)
 588 {
 589         struct ti_port *tport;
 590
 591         tport = kzalloc(sizeof(*tport), GFP_KERNEL);
 592         if (!tport)
 593                 return -ENOMEM;
 594
 595         spin_lock_init(&tport->tp_lock);
 596         if (port == port->serial->port[0])
 597                 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
 598         else
 599                 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
 600         port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
 601         tport->tp_port = port;
 602         tport->tp_tdev = usb_get_serial_data(port->serial);
 603
 604         if (tport->tp_tdev->td_rs485_only)
 605                 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
 606         else
 607                 tport->tp_uart_mode = TI_UART_232;
 608
 609         usb_set_serial_port_data(port, tport);
 610
 611         port->port.drain_delay = 3;
 612
 613         return 0;
 614 }
 615
 616 static int ti_port_remove(struct usb_serial_port *port)
 617 {
 618         struct ti_port *tport;
 619
 620         tport = usb_get_serial_port_data(port);
 621         kfree(tport);
 622
 623         return 0;
 624 }
 625
 626 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
 627 {
 628         struct ti_port *tport = usb_get_serial_port_data(port);
 629         struct ti_device *tdev;
 630         struct usb_device *dev;
 631         struct urb *urb;
 632         int port_number;
 633         int status;
 634         u16 open_settings;
 635
 636         open_settings = (TI_PIPE_MODE_CONTINUOUS |
 637                          TI_PIPE_TIMEOUT_ENABLE |
 638                          (TI_TRANSFER_TIMEOUT << 2));
 639
 640         dev = port->serial->dev;
 641         tdev = tport->tp_tdev;
 642
 643         /* only one open on any port on a device at a time */
 644         if (mutex_lock_interruptible(&tdev->td_open_close_lock))
 645                 return -ERESTARTSYS;
 646
 647         port_number = port->port_number;
 648
 649         tport->tp_msr = 0;
 650         tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
 651
 652         /* start interrupt urb the first time a port is opened on this device */
 653         if (tdev->td_open_port_count == 0) {
 654                 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
 655                 urb = tdev->td_serial->port[0]->interrupt_in_urb;
 656                 if (!urb) {
 657                         dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
 658                         status = -EINVAL;
 659                         goto release_lock;
 660                 }
 661                 urb->context = tdev;
 662                 status = usb_submit_urb(urb, GFP_KERNEL);
 663                 if (status) {
 664                         dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
 665                         goto release_lock;
 666                 }
 667         }
 668
 669         if (tty)
 670                 ti_set_termios(tty, port, &tty->termios);
 671
 672         status = ti_command_out_sync(tdev, TI_OPEN_PORT,
 673                 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
 674         if (status) {
 675                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
 676                         __func__, status);
 677                 goto unlink_int_urb;
 678         }
 679
 680         status = ti_command_out_sync(tdev, TI_START_PORT,
 681                 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
 682         if (status) {
 683                 dev_err(&port->dev, "%s - cannot send start command, %d\n",
 684                                                         __func__, status);
 685                 goto unlink_int_urb;
 686         }
 687
 688         status = ti_command_out_sync(tdev, TI_PURGE_PORT,
 689                 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
 690         if (status) {
 691                 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
 692                                                         __func__, status);
 693                 goto unlink_int_urb;
 694         }
 695         status = ti_command_out_sync(tdev, TI_PURGE_PORT,
 696                 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
 697         if (status) {
 698                 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
 699                                                         __func__, status);
 700                 goto unlink_int_urb;
 701         }
 702
 703         /* reset the data toggle on the bulk endpoints to work around bug in
 704          * host controllers where things get out of sync some times */
 705         usb_clear_halt(dev, port->write_urb->pipe);
 706         usb_clear_halt(dev, port->read_urb->pipe);
 707
 708         if (tty)
 709                 ti_set_termios(tty, port, &tty->termios);
 710
 711         status = ti_command_out_sync(tdev, TI_OPEN_PORT,
 712                 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
 713         if (status) {
 714                 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
 715                                                         __func__, status);
 716                 goto unlink_int_urb;
 717         }
 718
 719         status = ti_command_out_sync(tdev, TI_START_PORT,
 720                 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
 721         if (status) {
 722                 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
 723                                                         __func__, status);
 724                 goto unlink_int_urb;
 725         }
 726
 727         /* start read urb */
 728         urb = port->read_urb;
 729         if (!urb) {
 730                 dev_err(&port->dev, "%s - no read urb\n", __func__);
 731                 status = -EINVAL;
 732                 goto unlink_int_urb;
 733         }
 734         tport->tp_read_urb_state = TI_READ_URB_RUNNING;
 735         urb->context = tport;
 736         status = usb_submit_urb(urb, GFP_KERNEL);
 737         if (status) {
 738                 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
 739                                                         __func__, status);
 740                 goto unlink_int_urb;
 741         }
 742
 743         tport->tp_is_open = 1;
 744         ++tdev->td_open_port_count;
 745
 746         goto release_lock;
 747
 748 unlink_int_urb:
 749         if (tdev->td_open_port_count == 0)
 750                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
 751 release_lock:
 752         mutex_unlock(&tdev->td_open_close_lock);
 753         return status;
 754 }
 755
 756
 757 static void ti_close(struct usb_serial_port *port)
 758 {
 759         struct ti_device *tdev;
 760         struct ti_port *tport;
 761         int port_number;
 762         int status;
 763         int do_unlock;
 764         unsigned long flags;
 765
 766         tdev = usb_get_serial_data(port->serial);
 767         tport = usb_get_serial_port_data(port);
 768
 769         tport->tp_is_open = 0;
 770
 771         usb_kill_urb(port->read_urb);
 772         usb_kill_urb(port->write_urb);
 773         tport->tp_write_urb_in_use = 0;
 774         spin_lock_irqsave(&tport->tp_lock, flags);
 775         kfifo_reset_out(&port->write_fifo);
 776         spin_unlock_irqrestore(&tport->tp_lock, flags);
 777
 778         port_number = port->port_number;
 779
 780         status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
 781                      (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
 782         if (status)
 783                 dev_err(&port->dev,
 784                         "%s - cannot send close port command, %d\n"
 785                                                         , __func__, status);
 786
 787         /* if mutex_lock is interrupted, continue anyway */
 788         do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
 789         --tport->tp_tdev->td_open_port_count;
 790         if (tport->tp_tdev->td_open_port_count <= 0) {
 791                 /* last port is closed, shut down interrupt urb */
 792                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
 793                 tport->tp_tdev->td_open_port_count = 0;
 794         }
 795         if (do_unlock)
 796                 mutex_unlock(&tdev->td_open_close_lock);
 797 }
 798
 799
 800 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
 801                         const unsigned char *data, int count)
 802 {
 803         struct ti_port *tport = usb_get_serial_port_data(port);
 804
 805         if (count == 0) {
 806                 return 0;
 807         }
 808
 809         if (!tport->tp_is_open)
 810                 return -ENODEV;
 811
 812         count = kfifo_in_locked(&port->write_fifo, data, count,
 813                                                         &tport->tp_lock);
 814         ti_send(tport);
 815
 816         return count;
 817 }
 818
 819
 820 static int ti_write_room(struct tty_struct *tty)
 821 {
 822         struct usb_serial_port *port = tty->driver_data;
 823         struct ti_port *tport = usb_get_serial_port_data(port);
 824         int room = 0;
 825         unsigned long flags;
 826
 827         spin_lock_irqsave(&tport->tp_lock, flags);
 828         room = kfifo_avail(&port->write_fifo);
 829         spin_unlock_irqrestore(&tport->tp_lock, flags);
 830
 831         dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
 832         return room;
 833 }
 834
 835
 836 static int ti_chars_in_buffer(struct tty_struct *tty)
 837 {
 838         struct usb_serial_port *port = tty->driver_data;
 839         struct ti_port *tport = usb_get_serial_port_data(port);
 840         int chars = 0;
 841         unsigned long flags;
 842
 843         spin_lock_irqsave(&tport->tp_lock, flags);
 844         chars = kfifo_len(&port->write_fifo);
 845         spin_unlock_irqrestore(&tport->tp_lock, flags);
 846
 847         dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
 848         return chars;
 849 }
 850
 851 static bool ti_tx_empty(struct usb_serial_port *port)
 852 {
 853         struct ti_port *tport = usb_get_serial_port_data(port);
 854         int ret;
 855         u8 lsr;
 856
 857         ret = ti_get_lsr(tport, &lsr);
 858         if (!ret && !(lsr & TI_LSR_TX_EMPTY))
 859                 return false;
 860
 861         return true;
 862 }
 863
 864 static void ti_throttle(struct tty_struct *tty)
 865 {
 866         struct usb_serial_port *port = tty->driver_data;
 867         struct ti_port *tport = usb_get_serial_port_data(port);
 868
 869         if (I_IXOFF(tty) || C_CRTSCTS(tty))
 870                 ti_stop_read(tport, tty);
 871
 872 }
 873
 874
 875 static void ti_unthrottle(struct tty_struct *tty)
 876 {
 877         struct usb_serial_port *port = tty->driver_data;
 878         struct ti_port *tport = usb_get_serial_port_data(port);
 879         int status;
 880
 881         if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
 882                 status = ti_restart_read(tport, tty);
 883                 if (status)
 884                         dev_err(&port->dev, "%s - cannot restart read, %d\n",
 885                                                         __func__, status);
 886         }
 887 }
 888
 889 static int ti_ioctl(struct tty_struct *tty,
 890         unsigned int cmd, unsigned long arg)
 891 {
 892         struct usb_serial_port *port = tty->driver_data;
 893         struct ti_port *tport = usb_get_serial_port_data(port);
 894
 895         switch (cmd) {
 896         case TIOCGSERIAL:
 897                 return ti_get_serial_info(tport,
 898                                 (struct serial_struct __user *)arg);
 899         case TIOCSSERIAL:
 900                 return ti_set_serial_info(tty, tport,
 901                                 (struct serial_struct __user *)arg);
 902         }
 903         return -ENOIOCTLCMD;
 904 }
 905
 906
 907 static void ti_set_termios(struct tty_struct *tty,
 908                 struct usb_serial_port *port, struct ktermios *old_termios)
 909 {
 910         struct ti_port *tport = usb_get_serial_port_data(port);
 911         struct ti_uart_config *config;
 912         tcflag_t cflag, iflag;
 913         int baud;
 914         int status;
 915         int port_number = port->port_number;
 916         unsigned int mcr;
 917         u16 wbaudrate;
 918         u16 wflags = 0;
 919
 920         cflag = tty->termios.c_cflag;
 921         iflag = tty->termios.c_iflag;
 922
 923         dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
 924         dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
 925                 old_termios->c_cflag, old_termios->c_iflag);
 926
 927         config = kmalloc(sizeof(*config), GFP_KERNEL);
 928         if (!config)
 929                 return;
 930
 931         /* these flags must be set */
 932         wflags |= TI_UART_ENABLE_MS_INTS;
 933         wflags |= TI_UART_ENABLE_AUTO_START_DMA;
 934         config->bUartMode = tport->tp_uart_mode;
 935
 936         switch (C_CSIZE(tty)) {
 937         case CS5:
 938                     config->bDataBits = TI_UART_5_DATA_BITS;
 939                     break;
 940         case CS6:
 941                     config->bDataBits = TI_UART_6_DATA_BITS;
 942                     break;
 943         case CS7:
 944                     config->bDataBits = TI_UART_7_DATA_BITS;
 945                     break;
 946         default:
 947         case CS8:
 948                     config->bDataBits = TI_UART_8_DATA_BITS;
 949                     break;
 950         }
 951
 952         /* CMSPAR isn't supported by this driver */
 953         tty->termios.c_cflag &= ~CMSPAR;
 954
 955         if (C_PARENB(tty)) {
 956                 if (C_PARODD(tty)) {
 957                         wflags |= TI_UART_ENABLE_PARITY_CHECKING;
 958                         config->bParity = TI_UART_ODD_PARITY;
 959                 } else {
 960                         wflags |= TI_UART_ENABLE_PARITY_CHECKING;
 961                         config->bParity = TI_UART_EVEN_PARITY;
 962                 }
 963         } else {
 964                 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
 965                 config->bParity = TI_UART_NO_PARITY;
 966         }
 967
 968         if (C_CSTOPB(tty))
 969                 config->bStopBits = TI_UART_2_STOP_BITS;
 970         else
 971                 config->bStopBits = TI_UART_1_STOP_BITS;
 972
 973         if (C_CRTSCTS(tty)) {
 974                 /* RTS flow control must be off to drop RTS for baud rate B0 */
 975                 if ((C_BAUD(tty)) != B0)
 976                         wflags |= TI_UART_ENABLE_RTS_IN;
 977                 wflags |= TI_UART_ENABLE_CTS_OUT;
 978         } else {
 979                 ti_restart_read(tport, tty);
 980         }
 981
 982         if (I_IXOFF(tty) || I_IXON(tty)) {
 983                 config->cXon  = START_CHAR(tty);
 984                 config->cXoff = STOP_CHAR(tty);
 985
 986                 if (I_IXOFF(tty))
 987                         wflags |= TI_UART_ENABLE_X_IN;
 988                 else
 989                         ti_restart_read(tport, tty);
 990
 991                 if (I_IXON(tty))
 992                         wflags |= TI_UART_ENABLE_X_OUT;
 993         }
 994
 995         baud = tty_get_baud_rate(tty);
 996         if (!baud)
 997                 baud = 9600;
 998         if (tport->tp_tdev->td_is_3410)
 999                 wbaudrate = (923077 + baud/2) / baud;
1000         else
1001                 wbaudrate = (461538 + baud/2) / baud;
1002
1003         /* FIXME: Should calculate resulting baud here and report it back */
1004         if ((C_BAUD(tty)) != B0)
1005                 tty_encode_baud_rate(tty, baud, baud);
1006
1007         dev_dbg(&port->dev,
1008                 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
1009                 __func__, baud, wbaudrate, wflags,
1010                 config->bDataBits, config->bParity, config->bStopBits,
1011                 config->cXon, config->cXoff, config->bUartMode);
1012
1013         config->wBaudRate = cpu_to_be16(wbaudrate);
1014         config->wFlags = cpu_to_be16(wflags);
1015
1016         status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
1017                 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
1018                 sizeof(*config));
1019         if (status)
1020                 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1021                                         __func__, port_number, status);
1022
1023         /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1024         mcr = tport->tp_shadow_mcr;
1025         /* if baud rate is B0, clear RTS and DTR */
1026         if (C_BAUD(tty) == B0)
1027                 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1028         status = ti_set_mcr(tport, mcr);
1029         if (status)
1030                 dev_err(&port->dev,
1031                         "%s - cannot set modem control on port %d, %d\n",
1032                                                 __func__, port_number, status);
1033
1034         kfree(config);
1035 }
1036
1037
1038 static int ti_tiocmget(struct tty_struct *tty)
1039 {
1040         struct usb_serial_port *port = tty->driver_data;
1041         struct ti_port *tport = usb_get_serial_port_data(port);
1042         unsigned int result;
1043         unsigned int msr;
1044         unsigned int mcr;
1045         unsigned long flags;
1046
1047         spin_lock_irqsave(&tport->tp_lock, flags);
1048         msr = tport->tp_msr;
1049         mcr = tport->tp_shadow_mcr;
1050         spin_unlock_irqrestore(&tport->tp_lock, flags);
1051
1052         result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1053                 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1054                 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1055                 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1056                 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1057                 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1058                 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1059
1060         dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1061
1062         return result;
1063 }
1064
1065
1066 static int ti_tiocmset(struct tty_struct *tty,
1067                                 unsigned int set, unsigned int clear)
1068 {
1069         struct usb_serial_port *port = tty->driver_data;
1070         struct ti_port *tport = usb_get_serial_port_data(port);
1071         unsigned int mcr;
1072         unsigned long flags;
1073
1074         spin_lock_irqsave(&tport->tp_lock, flags);
1075         mcr = tport->tp_shadow_mcr;
1076
1077         if (set & TIOCM_RTS)
1078                 mcr |= TI_MCR_RTS;
1079         if (set & TIOCM_DTR)
1080                 mcr |= TI_MCR_DTR;
1081         if (set & TIOCM_LOOP)
1082                 mcr |= TI_MCR_LOOP;
1083
1084         if (clear & TIOCM_RTS)
1085                 mcr &= ~TI_MCR_RTS;
1086         if (clear & TIOCM_DTR)
1087                 mcr &= ~TI_MCR_DTR;
1088         if (clear & TIOCM_LOOP)
1089                 mcr &= ~TI_MCR_LOOP;
1090         spin_unlock_irqrestore(&tport->tp_lock, flags);
1091
1092         return ti_set_mcr(tport, mcr);
1093 }
1094
1095
1096 static void ti_break(struct tty_struct *tty, int break_state)
1097 {
1098         struct usb_serial_port *port = tty->driver_data;
1099         struct ti_port *tport = usb_get_serial_port_data(port);
1100         int status;
1101
1102         dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1103
1104         status = ti_write_byte(port, tport->tp_tdev,
1105                 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1106                 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1107
1108         if (status)
1109                 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1110 }
1111
1112 static int ti_get_port_from_code(unsigned char code)
1113 {
1114         return (code >> 4) - 3;
1115 }
1116
1117 static int ti_get_func_from_code(unsigned char code)
1118 {
1119         return code & 0x0f;
1120 }
1121
1122 static void ti_interrupt_callback(struct urb *urb)
1123 {
1124         struct ti_device *tdev = urb->context;
1125         struct usb_serial_port *port;
1126         struct usb_serial *serial = tdev->td_serial;
1127         struct ti_port *tport;
1128         struct device *dev = &urb->dev->dev;
1129         unsigned char *data = urb->transfer_buffer;
1130         int length = urb->actual_length;
1131         int port_number;
1132         int function;
1133         int status = urb->status;
1134         int retval;
1135         u8 msr;
1136
1137         switch (status) {
1138         case 0:
1139                 break;
1140         case -ECONNRESET:
1141         case -ENOENT:
1142         case -ESHUTDOWN:
1143                 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1144                 return;
1145         default:
1146                 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1147                 goto exit;
1148         }
1149
1150         if (length != 2) {
1151                 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1152                 goto exit;
1153         }
1154
1155         if (data[0] == TI_CODE_HARDWARE_ERROR) {
1156                 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1157                 goto exit;
1158         }
1159
1160         port_number = ti_get_port_from_code(data[0]);
1161         function = ti_get_func_from_code(data[0]);
1162
1163         dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1164                 __func__, port_number, function, data[1]);
1165
1166         if (port_number >= serial->num_ports) {
1167                 dev_err(dev, "%s - bad port number, %d\n",
1168                                                 __func__, port_number);
1169                 goto exit;
1170         }
1171
1172         port = serial->port[port_number];
1173
1174         tport = usb_get_serial_port_data(port);
1175         if (!tport)
1176                 goto exit;
1177
1178         switch (function) {
1179         case TI_CODE_DATA_ERROR:
1180                 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1181                         __func__, port_number, data[1]);
1182                 break;
1183
1184         case TI_CODE_MODEM_STATUS:
1185                 msr = data[1];
1186                 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1187                 ti_handle_new_msr(tport, msr);
1188                 break;
1189
1190         default:
1191                 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1192                                                         __func__, data[1]);
1193                 break;
1194         }
1195
1196 exit:
1197         retval = usb_submit_urb(urb, GFP_ATOMIC);
1198         if (retval)
1199                 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1200                         __func__, retval);
1201 }
1202
1203
1204 static void ti_bulk_in_callback(struct urb *urb)
1205 {
1206         struct ti_port *tport = urb->context;
1207         struct usb_serial_port *port = tport->tp_port;
1208         struct device *dev = &urb->dev->dev;
1209         int status = urb->status;
1210         int retval = 0;
1211
1212         switch (status) {
1213         case 0:
1214                 break;
1215         case -ECONNRESET:
1216         case -ENOENT:
1217         case -ESHUTDOWN:
1218                 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1219                 return;
1220         default:
1221                 dev_err(dev, "%s - nonzero urb status, %d\n",
1222                         __func__, status);
1223         }
1224
1225         if (status == -EPIPE)
1226                 goto exit;
1227
1228         if (status) {
1229                 dev_err(dev, "%s - stopping read!\n", __func__);
1230                 return;
1231         }
1232
1233         if (urb->actual_length) {
1234                 usb_serial_debug_data(dev, __func__, urb->actual_length,
1235                                       urb->transfer_buffer);
1236
1237                 if (!tport->tp_is_open)
1238                         dev_dbg(dev, "%s - port closed, dropping data\n",
1239                                 __func__);
1240                 else
1241                         ti_recv(port, urb->transfer_buffer, urb->actual_length);
1242                 spin_lock(&tport->tp_lock);
1243                 port->icount.rx += urb->actual_length;
1244                 spin_unlock(&tport->tp_lock);
1245         }
1246
1247 exit:
1248         /* continue to read unless stopping */
1249         spin_lock(&tport->tp_lock);
1250         if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1251                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1252         else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1253                 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1254
1255         spin_unlock(&tport->tp_lock);
1256         if (retval)
1257                 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1258                         __func__, retval);
1259 }
1260
1261
1262 static void ti_bulk_out_callback(struct urb *urb)
1263 {
1264         struct ti_port *tport = urb->context;
1265         struct usb_serial_port *port = tport->tp_port;
1266         int status = urb->status;
1267
1268         tport->tp_write_urb_in_use = 0;
1269
1270         switch (status) {
1271         case 0:
1272                 break;
1273         case -ECONNRESET:
1274         case -ENOENT:
1275         case -ESHUTDOWN:
1276                 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1277                 return;
1278         default:
1279                 dev_err_console(port, "%s - nonzero urb status, %d\n",
1280                         __func__, status);
1281         }
1282
1283         /* send any buffered data */
1284         ti_send(tport);
1285 }
1286
1287
1288 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1289                 int length)
1290 {
1291         int cnt;
1292
1293         do {
1294                 cnt = tty_insert_flip_string(&port->port, data, length);
1295                 if (cnt < length) {
1296                         dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1297                                                 __func__, length - cnt);
1298                         if (cnt == 0)
1299                                 break;
1300                 }
1301                 tty_flip_buffer_push(&port->port);
1302                 data += cnt;
1303                 length -= cnt;
1304         } while (length > 0);
1305 }
1306
1307
1308 static void ti_send(struct ti_port *tport)
1309 {
1310         int count, result;
1311         struct usb_serial_port *port = tport->tp_port;
1312         unsigned long flags;
1313
1314         spin_lock_irqsave(&tport->tp_lock, flags);
1315
1316         if (tport->tp_write_urb_in_use)
1317                 goto unlock;
1318
1319         count = kfifo_out(&port->write_fifo,
1320                                 port->write_urb->transfer_buffer,
1321                                 port->bulk_out_size);
1322
1323         if (count == 0)
1324                 goto unlock;
1325
1326         tport->tp_write_urb_in_use = 1;
1327
1328         spin_unlock_irqrestore(&tport->tp_lock, flags);
1329
1330         usb_serial_debug_data(&port->dev, __func__, count,
1331                               port->write_urb->transfer_buffer);
1332
1333         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1334                            usb_sndbulkpipe(port->serial->dev,
1335                                             port->bulk_out_endpointAddress),
1336                            port->write_urb->transfer_buffer, count,
1337                            ti_bulk_out_callback, tport);
1338
1339         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1340         if (result) {
1341                 dev_err_console(port, "%s - submit write urb failed, %d\n",
1342                                                         __func__, result);
1343                 tport->tp_write_urb_in_use = 0;
1344                 /* TODO: reschedule ti_send */
1345         } else {
1346                 spin_lock_irqsave(&tport->tp_lock, flags);
1347                 port->icount.tx += count;
1348                 spin_unlock_irqrestore(&tport->tp_lock, flags);
1349         }
1350
1351         /* more room in the buffer for new writes, wakeup */
1352         tty_port_tty_wakeup(&port->port);
1353
1354         return;
1355 unlock:
1356         spin_unlock_irqrestore(&tport->tp_lock, flags);
1357         return;
1358 }
1359
1360
1361 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1362 {
1363         unsigned long flags;
1364         int status;
1365
1366         status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1367                 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1368                 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1369
1370         spin_lock_irqsave(&tport->tp_lock, flags);
1371         if (!status)
1372                 tport->tp_shadow_mcr = mcr;
1373         spin_unlock_irqrestore(&tport->tp_lock, flags);
1374
1375         return status;
1376 }
1377
1378
1379 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1380 {
1381         int size, status;
1382         struct ti_device *tdev = tport->tp_tdev;
1383         struct usb_serial_port *port = tport->tp_port;
1384         int port_number = port->port_number;
1385         struct ti_port_status *data;
1386
1387         size = sizeof(struct ti_port_status);
1388         data = kmalloc(size, GFP_KERNEL);
1389         if (!data)
1390                 return -ENOMEM;
1391
1392         status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1393                 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1394         if (status) {
1395                 dev_err(&port->dev,
1396                         "%s - get port status command failed, %d\n",
1397                                                         __func__, status);
1398                 goto free_data;
1399         }
1400
1401         dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1402
1403         *lsr = data->bLSR;
1404
1405 free_data:
1406         kfree(data);
1407         return status;
1408 }
1409
1410
1411 static int ti_get_serial_info(struct ti_port *tport,
1412         struct serial_struct __user *ret_arg)
1413 {
1414         struct usb_serial_port *port = tport->tp_port;
1415         struct serial_struct ret_serial;
1416         unsigned cwait;
1417
1418         if (!ret_arg)
1419                 return -EFAULT;
1420
1421         cwait = port->port.closing_wait;
1422         if (cwait != ASYNC_CLOSING_WAIT_NONE)
1423                 cwait = jiffies_to_msecs(cwait) / 10;
1424
1425         memset(&ret_serial, 0, sizeof(ret_serial));
1426
1427         ret_serial.type = PORT_16550A;
1428         ret_serial.line = port->minor;
1429         ret_serial.port = port->port_number;
1430         ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1431         ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1432         ret_serial.closing_wait = cwait;
1433
1434         if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1435                 return -EFAULT;
1436
1437         return 0;
1438 }
1439
1440
1441 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1442         struct serial_struct __user *new_arg)
1443 {
1444         struct serial_struct new_serial;
1445         unsigned cwait;
1446
1447         if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1448                 return -EFAULT;
1449
1450         cwait = new_serial.closing_wait;
1451         if (cwait != ASYNC_CLOSING_WAIT_NONE)
1452                 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1453
1454         tport->tp_port->port.closing_wait = cwait;
1455
1456         return 0;
1457 }
1458
1459
1460 static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1461 {
1462         struct async_icount *icount;
1463         struct tty_struct *tty;
1464         unsigned long flags;
1465
1466         dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1467
1468         if (msr & TI_MSR_DELTA_MASK) {
1469                 spin_lock_irqsave(&tport->tp_lock, flags);
1470                 icount = &tport->tp_port->icount;
1471                 if (msr & TI_MSR_DELTA_CTS)
1472                         icount->cts++;
1473                 if (msr & TI_MSR_DELTA_DSR)
1474                         icount->dsr++;
1475                 if (msr & TI_MSR_DELTA_CD)
1476                         icount->dcd++;
1477                 if (msr & TI_MSR_DELTA_RI)
1478                         icount->rng++;
1479                 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1480                 spin_unlock_irqrestore(&tport->tp_lock, flags);
1481         }
1482
1483         tport->tp_msr = msr & TI_MSR_MASK;
1484
1485         /* handle CTS flow control */
1486         tty = tty_port_tty_get(&tport->tp_port->port);
1487         if (tty && C_CRTSCTS(tty)) {
1488                 if (msr & TI_MSR_CTS)
1489                         tty_wakeup(tty);
1490         }
1491         tty_kref_put(tty);
1492 }
1493
1494
1495 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1496 {
1497         unsigned long flags;
1498
1499         spin_lock_irqsave(&tport->tp_lock, flags);
1500
1501         if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1502                 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1503
1504         spin_unlock_irqrestore(&tport->tp_lock, flags);
1505 }
1506
1507
1508 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1509 {
1510         struct urb *urb;
1511         int status = 0;
1512         unsigned long flags;
1513
1514         spin_lock_irqsave(&tport->tp_lock, flags);
1515
1516         if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1517                 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1518                 urb = tport->tp_port->read_urb;
1519                 spin_unlock_irqrestore(&tport->tp_lock, flags);
1520                 urb->context = tport;
1521                 status = usb_submit_urb(urb, GFP_KERNEL);
1522         } else  {
1523                 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1524                 spin_unlock_irqrestore(&tport->tp_lock, flags);
1525         }
1526
1527         return status;
1528 }
1529
1530
1531 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1532         __u16 moduleid, __u16 value, __u8 *data, int size)
1533 {
1534         int status;
1535
1536         status = usb_control_msg(tdev->td_serial->dev,
1537                 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1538                 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1539                 value, moduleid, data, size, 1000);
1540
1541         if (status == size)
1542                 status = 0;
1543
1544         if (status > 0)
1545                 status = -ECOMM;
1546
1547         return status;
1548 }
1549
1550
1551 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1552         __u16 moduleid, __u16 value, __u8 *data, int size)
1553 {
1554         int status;
1555
1556         status = usb_control_msg(tdev->td_serial->dev,
1557                 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1558                 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1559                 value, moduleid, data, size, 1000);
1560
1561         if (status == size)
1562                 status = 0;
1563
1564         if (status > 0)
1565                 status = -ECOMM;
1566
1567         return status;
1568 }
1569
1570
1571 static int ti_write_byte(struct usb_serial_port *port,
1572                          struct ti_device *tdev, unsigned long addr,
1573                          u8 mask, u8 byte)
1574 {
1575         int status;
1576         unsigned int size;
1577         struct ti_write_data_bytes *data;
1578
1579         dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1580                 addr, mask, byte);
1581
1582         size = sizeof(struct ti_write_data_bytes) + 2;
1583         data = kmalloc(size, GFP_KERNEL);
1584         if (!data)
1585                 return -ENOMEM;
1586
1587         data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1588         data->bDataType = TI_RW_DATA_BYTE;
1589         data->bDataCounter = 1;
1590         data->wBaseAddrHi = cpu_to_be16(addr>>16);
1591         data->wBaseAddrLo = cpu_to_be16(addr);
1592         data->bData[0] = mask;
1593         data->bData[1] = byte;
1594
1595         status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1596                 (__u8 *)data, size);
1597
1598         if (status < 0)
1599                 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1600
1601         kfree(data);
1602
1603         return status;
1604 }
1605
1606 static int ti_do_download(struct usb_device *dev, int pipe,
1607                                                 u8 *buffer, int size)
1608 {
1609         int pos;
1610         u8 cs = 0;
1611         int done;
1612         struct ti_firmware_header *header;
1613         int status = 0;
1614         int len;
1615
1616         for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1617                 cs = (u8)(cs + buffer[pos]);
1618
1619         header = (struct ti_firmware_header *)buffer;
1620         header->wLength = cpu_to_le16(size - sizeof(*header));
1621         header->bCheckSum = cs;
1622
1623         dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1624         for (pos = 0; pos < size; pos += done) {
1625                 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1626                 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1627                                                                 &done, 1000);
1628                 if (status)
1629                         break;
1630         }
1631         return status;
1632 }
1633
1634 static int ti_download_firmware(struct ti_device *tdev)
1635 {
1636         int status;
1637         int buffer_size;
1638         u8 *buffer;
1639         struct usb_device *dev = tdev->td_serial->dev;
1640         unsigned int pipe = usb_sndbulkpipe(dev,
1641                 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1642         const struct firmware *fw_p;
1643         char buf[32];
1644
1645         if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1646                 snprintf(buf,
1647                         sizeof(buf),
1648                         "/*(DEBLOBBED)*/",
1649                         le16_to_cpu(dev->descriptor.idProduct));
1650
1651                 status = reject_firmware(&fw_p, buf, &dev->dev);
1652                 goto check_firmware;
1653         }
1654
1655         /* try ID specific firmware first, then try generic firmware */
1656         sprintf(buf, "/*(DEBLOBBED)*/",
1657                         le16_to_cpu(dev->descriptor.idVendor),
1658                         le16_to_cpu(dev->descriptor.idProduct));
1659         status = reject_firmware(&fw_p, buf, &dev->dev);
1660
1661         if (status != 0) {
1662                 buf[0] = '\0';
1663                 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1664                         switch (le16_to_cpu(dev->descriptor.idProduct)) {
1665                         case MTS_CDMA_PRODUCT_ID:
1666                                 strcpy(buf, "/*(DEBLOBBED)*/");
1667                                 break;
1668                         case MTS_GSM_PRODUCT_ID:
1669                                 strcpy(buf, "/*(DEBLOBBED)*/");
1670                                 break;
1671                         case MTS_EDGE_PRODUCT_ID:
1672                                 strcpy(buf, "/*(DEBLOBBED)*/");
1673                                 break;
1674                         case MTS_MT9234MU_PRODUCT_ID:
1675                                 strcpy(buf, "/*(DEBLOBBED)*/");
1676                                 break;
1677                         case MTS_MT9234ZBA_PRODUCT_ID:
1678                                 strcpy(buf, "/*(DEBLOBBED)*/");
1679                                 break;
1680                         case MTS_MT9234ZBAOLD_PRODUCT_ID:
1681                                 strcpy(buf, "/*(DEBLOBBED)*/");
1682                                 break;                  }
1683                 }
1684                 if (buf[0] == '\0') {
1685                         if (tdev->td_is_3410)
1686                                 strcpy(buf, "/*(DEBLOBBED)*/");
1687                         else
1688                                 strcpy(buf, "/*(DEBLOBBED)*/");
1689                 }
1690                 status = reject_firmware(&fw_p, buf, &dev->dev);
1691         }
1692
1693 check_firmware:
1694         if (status) {
1695                 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1696                 return -ENOENT;
1697         }
1698         if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1699                 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1700                 release_firmware(fw_p);
1701                 return -ENOENT;
1702         }
1703
1704         buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1705         buffer = kmalloc(buffer_size, GFP_KERNEL);
1706         if (buffer) {
1707                 memcpy(buffer, fw_p->data, fw_p->size);
1708                 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1709                 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1710                 kfree(buffer);
1711         } else {
1712                 status = -ENOMEM;
1713         }
1714         release_firmware(fw_p);
1715         if (status) {
1716                 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1717                                                         __func__, status);
1718                 return status;
1719         }
1720
1721         dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1722
1723         return 0;
1724 }