3 * TI 3410/5052 USB Serial Driver
5 * Copyright (C) 2004 Texas Instruments
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>.
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/firmware.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/tty.h>
27 #include <linux/tty_driver.h>
28 #include <linux/tty_flip.h>
29 #include <linux/module.h>
30 #include <linux/spinlock.h>
31 #include <linux/ioctl.h>
32 #include <linux/serial.h>
33 #include <linux/kfifo.h>
34 #include <linux/mutex.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
39 #include "ti_usb_3410_5052.h"
43 #define TI_DRIVER_VERSION "v0.10"
44 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
45 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
47 #define TI_FIRMWARE_BUF_SIZE 16284
49 #define TI_WRITE_BUF_SIZE 1024
51 #define TI_TRANSFER_TIMEOUT 2
53 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
55 /* supported setserial flags */
56 #define TI_SET_SERIAL_FLAGS 0
59 #define TI_READ_URB_RUNNING 0
60 #define TI_READ_URB_STOPPING 1
61 #define TI_READ_URB_STOPPED 2
63 #define TI_EXTRA_VID_PID_COUNT 5
73 __u8 tp_uart_mode; /* 232 or 485 modes */
74 unsigned int tp_uart_base_addr;
76 int tp_closing_wait;/* in .01 secs */
77 struct async_icount tp_icount;
78 wait_queue_head_t tp_write_wait;
79 struct ti_device *tp_tdev;
80 struct usb_serial_port *tp_port;
82 int tp_read_urb_state;
83 int tp_write_urb_in_use;
84 struct kfifo write_fifo;
88 struct mutex td_open_close_lock;
89 int td_open_port_count;
90 struct usb_serial *td_serial;
96 /* Function Declarations */
98 static int ti_startup(struct usb_serial *serial);
99 static void ti_release(struct usb_serial *serial);
100 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
101 static void ti_close(struct usb_serial_port *port);
102 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
103 const unsigned char *data, int count);
104 static int ti_write_room(struct tty_struct *tty);
105 static int ti_chars_in_buffer(struct tty_struct *tty);
106 static void ti_throttle(struct tty_struct *tty);
107 static void ti_unthrottle(struct tty_struct *tty);
108 static int ti_ioctl(struct tty_struct *tty,
109 unsigned int cmd, unsigned long arg);
110 static int ti_get_icount(struct tty_struct *tty,
111 struct serial_icounter_struct *icount);
112 static void ti_set_termios(struct tty_struct *tty,
113 struct usb_serial_port *port, struct ktermios *old_termios);
114 static int ti_tiocmget(struct tty_struct *tty);
115 static int ti_tiocmset(struct tty_struct *tty,
116 unsigned int set, unsigned int clear);
117 static void ti_break(struct tty_struct *tty, int break_state);
118 static void ti_interrupt_callback(struct urb *urb);
119 static void ti_bulk_in_callback(struct urb *urb);
120 static void ti_bulk_out_callback(struct urb *urb);
122 static void ti_recv(struct device *dev, struct tty_struct *tty,
123 unsigned char *data, int length);
124 static void ti_send(struct ti_port *tport);
125 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
126 static int ti_get_lsr(struct ti_port *tport);
127 static int ti_get_serial_info(struct ti_port *tport,
128 struct serial_struct __user *ret_arg);
129 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
130 struct serial_struct __user *new_arg);
131 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
133 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
135 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
136 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
138 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
139 __u16 moduleid, __u16 value, __u8 *data, int size);
140 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
141 __u16 moduleid, __u16 value, __u8 *data, int size);
143 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
144 __u8 mask, __u8 byte);
146 static int ti_download_firmware(struct ti_device *tdev);
151 /* module parameters */
153 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
154 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
155 static unsigned int vendor_3410_count;
156 static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
157 static unsigned int product_3410_count;
158 static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
159 static unsigned int vendor_5052_count;
160 static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
161 static unsigned int product_5052_count;
163 /* supported devices */
164 /* the array dimension is the number of default entries plus */
165 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
167 static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = {
168 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
169 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
170 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
171 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
172 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
173 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
174 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
175 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
176 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
177 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
178 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
179 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
180 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
181 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
182 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
183 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
186 static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
187 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
188 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
189 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
190 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
193 static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] = {
194 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
195 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
196 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
197 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
198 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
200 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
201 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
202 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
203 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
205 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
206 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
207 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
208 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
209 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
210 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
211 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
212 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
216 static struct usb_driver ti_usb_driver = {
217 .name = "ti_usb_3410_5052",
218 .probe = usb_serial_probe,
219 .disconnect = usb_serial_disconnect,
220 .id_table = ti_id_table_combined,
224 static struct usb_serial_driver ti_1port_device = {
226 .owner = THIS_MODULE,
227 .name = "ti_usb_3410_5052_1",
229 .description = "TI USB 3410 1 port adapter",
230 .usb_driver = &ti_usb_driver,
231 .id_table = ti_id_table_3410,
233 .attach = ti_startup,
234 .release = ti_release,
238 .write_room = ti_write_room,
239 .chars_in_buffer = ti_chars_in_buffer,
240 .throttle = ti_throttle,
241 .unthrottle = ti_unthrottle,
243 .set_termios = ti_set_termios,
244 .tiocmget = ti_tiocmget,
245 .tiocmset = ti_tiocmset,
246 .get_icount = ti_get_icount,
247 .break_ctl = ti_break,
248 .read_int_callback = ti_interrupt_callback,
249 .read_bulk_callback = ti_bulk_in_callback,
250 .write_bulk_callback = ti_bulk_out_callback,
253 static struct usb_serial_driver ti_2port_device = {
255 .owner = THIS_MODULE,
256 .name = "ti_usb_3410_5052_2",
258 .description = "TI USB 5052 2 port adapter",
259 .usb_driver = &ti_usb_driver,
260 .id_table = ti_id_table_5052,
262 .attach = ti_startup,
263 .release = ti_release,
267 .write_room = ti_write_room,
268 .chars_in_buffer = ti_chars_in_buffer,
269 .throttle = ti_throttle,
270 .unthrottle = ti_unthrottle,
272 .set_termios = ti_set_termios,
273 .tiocmget = ti_tiocmget,
274 .tiocmset = ti_tiocmset,
275 .get_icount = ti_get_icount,
276 .break_ctl = ti_break,
277 .read_int_callback = ti_interrupt_callback,
278 .read_bulk_callback = ti_bulk_in_callback,
279 .write_bulk_callback = ti_bulk_out_callback,
285 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
286 MODULE_DESCRIPTION(TI_DRIVER_DESC);
287 MODULE_VERSION(TI_DRIVER_VERSION);
288 MODULE_LICENSE("GPL");
290 MODULE_FIRMWARE("ti_3410.fw");
291 MODULE_FIRMWARE("ti_5052.fw");
292 MODULE_FIRMWARE("mts_cdma.fw");
293 MODULE_FIRMWARE("mts_gsm.fw");
294 MODULE_FIRMWARE("mts_edge.fw");
295 MODULE_FIRMWARE("mts_mt9234mu.fw");
296 MODULE_FIRMWARE("mts_mt9234zba.fw");
298 module_param(debug, bool, S_IRUGO | S_IWUSR);
299 MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
301 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
302 MODULE_PARM_DESC(closing_wait,
303 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
305 module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
306 MODULE_PARM_DESC(vendor_3410,
307 "Vendor ids for 3410 based devices, 1-5 short integers");
308 module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
309 MODULE_PARM_DESC(product_3410,
310 "Product ids for 3410 based devices, 1-5 short integers");
311 module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
312 MODULE_PARM_DESC(vendor_5052,
313 "Vendor ids for 5052 based devices, 1-5 short integers");
314 module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
315 MODULE_PARM_DESC(product_5052,
316 "Product ids for 5052 based devices, 1-5 short integers");
318 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
323 static int __init ti_init(void)
328 /* insert extra vendor and product ids */
329 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
330 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
331 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
332 ti_id_table_3410[j].idVendor = vendor_3410[i];
333 ti_id_table_3410[j].idProduct = product_3410[i];
334 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
335 ti_id_table_combined[c].idVendor = vendor_3410[i];
336 ti_id_table_combined[c].idProduct = product_3410[i];
337 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
339 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
340 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
341 ti_id_table_5052[j].idVendor = vendor_5052[i];
342 ti_id_table_5052[j].idProduct = product_5052[i];
343 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
344 ti_id_table_combined[c].idVendor = vendor_5052[i];
345 ti_id_table_combined[c].idProduct = product_5052[i];
346 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
349 ret = usb_serial_register(&ti_1port_device);
352 ret = usb_serial_register(&ti_2port_device);
356 ret = usb_register(&ti_usb_driver);
360 printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":"
361 TI_DRIVER_DESC "\n");
366 usb_serial_deregister(&ti_2port_device);
368 usb_serial_deregister(&ti_1port_device);
374 static void __exit ti_exit(void)
376 usb_deregister(&ti_usb_driver);
377 usb_serial_deregister(&ti_1port_device);
378 usb_serial_deregister(&ti_2port_device);
382 module_init(ti_init);
383 module_exit(ti_exit);
386 static int ti_startup(struct usb_serial *serial)
388 struct ti_device *tdev;
389 struct ti_port *tport;
390 struct usb_device *dev = serial->dev;
395 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
396 __func__, le16_to_cpu(dev->descriptor.idProduct),
397 dev->descriptor.bNumConfigurations,
398 dev->actconfig->desc.bConfigurationValue);
400 /* create device structure */
401 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
403 dev_err(&dev->dev, "%s - out of memory\n", __func__);
406 mutex_init(&tdev->td_open_close_lock);
407 tdev->td_serial = serial;
408 usb_set_serial_data(serial, tdev);
410 /* determine device type */
411 if (serial->type == &ti_1port_device)
412 tdev->td_is_3410 = 1;
413 dbg("%s - device type is %s", __func__,
414 tdev->td_is_3410 ? "3410" : "5052");
416 /* if we have only 1 configuration, download firmware */
417 if (dev->descriptor.bNumConfigurations == 1) {
418 if ((status = ti_download_firmware(tdev)) != 0)
421 /* 3410 must be reset, 5052 resets itself */
422 if (tdev->td_is_3410) {
423 msleep_interruptible(100);
424 usb_reset_device(dev);
431 /* the second configuration must be set */
432 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
433 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
434 status = status ? status : -ENODEV;
438 /* set up port structures */
439 for (i = 0; i < serial->num_ports; ++i) {
440 tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL);
442 dev_err(&dev->dev, "%s - out of memory\n", __func__);
446 spin_lock_init(&tport->tp_lock);
447 tport->tp_uart_base_addr = (i == 0 ?
448 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
449 tport->tp_closing_wait = closing_wait;
450 init_waitqueue_head(&tport->tp_write_wait);
451 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE,
453 dev_err(&dev->dev, "%s - out of memory\n", __func__);
458 tport->tp_port = serial->port[i];
459 tport->tp_tdev = tdev;
460 usb_set_serial_port_data(serial->port[i], tport);
461 tport->tp_uart_mode = 0; /* default is RS232 */
467 for (--i; i >= 0; --i) {
468 tport = usb_get_serial_port_data(serial->port[i]);
469 kfifo_free(&tport->write_fifo);
471 usb_set_serial_port_data(serial->port[i], NULL);
475 usb_set_serial_data(serial, NULL);
480 static void ti_release(struct usb_serial *serial)
483 struct ti_device *tdev = usb_get_serial_data(serial);
484 struct ti_port *tport;
488 for (i = 0; i < serial->num_ports; ++i) {
489 tport = usb_get_serial_port_data(serial->port[i]);
491 kfifo_free(&tport->write_fifo);
500 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
502 struct ti_port *tport = usb_get_serial_port_data(port);
503 struct ti_device *tdev;
504 struct usb_device *dev;
508 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
509 TI_PIPE_TIMEOUT_ENABLE |
510 (TI_TRANSFER_TIMEOUT << 2));
512 dbg("%s - port %d", __func__, port->number);
517 dev = port->serial->dev;
518 tdev = tport->tp_tdev;
520 /* only one open on any port on a device at a time */
521 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
524 port_number = port->number - port->serial->minor;
526 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
529 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
531 /* start interrupt urb the first time a port is opened on this device */
532 if (tdev->td_open_port_count == 0) {
533 dbg("%s - start interrupt in urb", __func__);
534 urb = tdev->td_serial->port[0]->interrupt_in_urb;
536 dev_err(&port->dev, "%s - no interrupt urb\n",
541 urb->complete = ti_interrupt_callback;
544 status = usb_submit_urb(urb, GFP_KERNEL);
547 "%s - submit interrupt urb failed, %d\n",
554 ti_set_termios(tty, port, tty->termios);
556 dbg("%s - sending TI_OPEN_PORT", __func__);
557 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
558 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
560 dev_err(&port->dev, "%s - cannot send open command, %d\n",
565 dbg("%s - sending TI_START_PORT", __func__);
566 status = ti_command_out_sync(tdev, TI_START_PORT,
567 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
569 dev_err(&port->dev, "%s - cannot send start command, %d\n",
574 dbg("%s - sending TI_PURGE_PORT", __func__);
575 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
576 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
578 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
582 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
583 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
585 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
590 /* reset the data toggle on the bulk endpoints to work around bug in
591 * host controllers where things get out of sync some times */
592 usb_clear_halt(dev, port->write_urb->pipe);
593 usb_clear_halt(dev, port->read_urb->pipe);
596 ti_set_termios(tty, port, tty->termios);
598 dbg("%s - sending TI_OPEN_PORT (2)", __func__);
599 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
600 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
602 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
607 dbg("%s - sending TI_START_PORT (2)", __func__);
608 status = ti_command_out_sync(tdev, TI_START_PORT,
609 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
611 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
617 dbg("%s - start read urb", __func__);
618 urb = port->read_urb;
620 dev_err(&port->dev, "%s - no read urb\n", __func__);
624 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
625 urb->complete = ti_bulk_in_callback;
626 urb->context = tport;
628 status = usb_submit_urb(urb, GFP_KERNEL);
630 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
635 tport->tp_is_open = 1;
636 ++tdev->td_open_port_count;
641 if (tdev->td_open_port_count == 0)
642 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
644 mutex_unlock(&tdev->td_open_close_lock);
645 dbg("%s - exit %d", __func__, status);
650 static void ti_close(struct usb_serial_port *port)
652 struct ti_device *tdev;
653 struct ti_port *tport;
658 dbg("%s - port %d", __func__, port->number);
660 tdev = usb_get_serial_data(port->serial);
661 tport = usb_get_serial_port_data(port);
662 if (tdev == NULL || tport == NULL)
665 tport->tp_is_open = 0;
667 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
669 usb_kill_urb(port->read_urb);
670 usb_kill_urb(port->write_urb);
671 tport->tp_write_urb_in_use = 0;
673 port_number = port->number - port->serial->minor;
675 dbg("%s - sending TI_CLOSE_PORT", __func__);
676 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
677 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
680 "%s - cannot send close port command, %d\n"
683 /* if mutex_lock is interrupted, continue anyway */
684 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
685 --tport->tp_tdev->td_open_port_count;
686 if (tport->tp_tdev->td_open_port_count <= 0) {
687 /* last port is closed, shut down interrupt urb */
688 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
689 tport->tp_tdev->td_open_port_count = 0;
692 mutex_unlock(&tdev->td_open_close_lock);
694 dbg("%s - exit", __func__);
698 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
699 const unsigned char *data, int count)
701 struct ti_port *tport = usb_get_serial_port_data(port);
703 dbg("%s - port %d", __func__, port->number);
706 dbg("%s - write request of 0 bytes", __func__);
710 if (tport == NULL || !tport->tp_is_open)
713 count = kfifo_in_locked(&tport->write_fifo, data, count,
721 static int ti_write_room(struct tty_struct *tty)
723 struct usb_serial_port *port = tty->driver_data;
724 struct ti_port *tport = usb_get_serial_port_data(port);
728 dbg("%s - port %d", __func__, port->number);
733 spin_lock_irqsave(&tport->tp_lock, flags);
734 room = kfifo_avail(&tport->write_fifo);
735 spin_unlock_irqrestore(&tport->tp_lock, flags);
737 dbg("%s - returns %d", __func__, room);
742 static int ti_chars_in_buffer(struct tty_struct *tty)
744 struct usb_serial_port *port = tty->driver_data;
745 struct ti_port *tport = usb_get_serial_port_data(port);
749 dbg("%s - port %d", __func__, port->number);
754 spin_lock_irqsave(&tport->tp_lock, flags);
755 chars = kfifo_len(&tport->write_fifo);
756 spin_unlock_irqrestore(&tport->tp_lock, flags);
758 dbg("%s - returns %d", __func__, chars);
763 static void ti_throttle(struct tty_struct *tty)
765 struct usb_serial_port *port = tty->driver_data;
766 struct ti_port *tport = usb_get_serial_port_data(port);
768 dbg("%s - port %d", __func__, port->number);
773 if (I_IXOFF(tty) || C_CRTSCTS(tty))
774 ti_stop_read(tport, tty);
779 static void ti_unthrottle(struct tty_struct *tty)
781 struct usb_serial_port *port = tty->driver_data;
782 struct ti_port *tport = usb_get_serial_port_data(port);
785 dbg("%s - port %d", __func__, port->number);
790 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
791 status = ti_restart_read(tport, tty);
793 dev_err(&port->dev, "%s - cannot restart read, %d\n",
798 static int ti_get_icount(struct tty_struct *tty,
799 struct serial_icounter_struct *icount)
801 struct usb_serial_port *port = tty->driver_data;
802 struct ti_port *tport = usb_get_serial_port_data(port);
803 struct async_icount cnow = tport->tp_icount;
805 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
806 __func__, port->number,
809 icount->cts = cnow.cts;
810 icount->dsr = cnow.dsr;
811 icount->rng = cnow.rng;
812 icount->dcd = cnow.dcd;
813 icount->rx = cnow.rx;
814 icount->tx = cnow.tx;
815 icount->frame = cnow.frame;
816 icount->overrun = cnow.overrun;
817 icount->parity = cnow.parity;
818 icount->brk = cnow.brk;
819 icount->buf_overrun = cnow.buf_overrun;
824 static int ti_ioctl(struct tty_struct *tty,
825 unsigned int cmd, unsigned long arg)
827 struct usb_serial_port *port = tty->driver_data;
828 struct ti_port *tport = usb_get_serial_port_data(port);
829 struct async_icount cnow;
830 struct async_icount cprev;
832 dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
839 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
840 return ti_get_serial_info(tport,
841 (struct serial_struct __user *)arg);
843 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
844 return ti_set_serial_info(tty, tport,
845 (struct serial_struct __user *)arg);
847 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
848 cprev = tport->tp_icount;
850 interruptible_sleep_on(&port->delta_msr_wait);
851 if (signal_pending(current))
854 if (port->serial->disconnected)
857 cnow = tport->tp_icount;
858 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
859 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
860 return -EIO; /* no change => error */
861 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
862 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
863 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
864 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
874 static void ti_set_termios(struct tty_struct *tty,
875 struct usb_serial_port *port, struct ktermios *old_termios)
877 struct ti_port *tport = usb_get_serial_port_data(port);
878 struct ti_uart_config *config;
879 tcflag_t cflag, iflag;
882 int port_number = port->number - port->serial->minor;
885 dbg("%s - port %d", __func__, port->number);
887 cflag = tty->termios->c_cflag;
888 iflag = tty->termios->c_iflag;
890 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
891 dbg("%s - old clfag %08x, old iflag %08x", __func__,
892 old_termios->c_cflag, old_termios->c_iflag);
897 config = kmalloc(sizeof(*config), GFP_KERNEL);
899 dev_err(&port->dev, "%s - out of memory\n", __func__);
905 /* these flags must be set */
906 config->wFlags |= TI_UART_ENABLE_MS_INTS;
907 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
908 config->bUartMode = (__u8)(tport->tp_uart_mode);
910 switch (cflag & CSIZE) {
912 config->bDataBits = TI_UART_5_DATA_BITS;
915 config->bDataBits = TI_UART_6_DATA_BITS;
918 config->bDataBits = TI_UART_7_DATA_BITS;
922 config->bDataBits = TI_UART_8_DATA_BITS;
926 /* CMSPAR isn't supported by this driver */
927 tty->termios->c_cflag &= ~CMSPAR;
929 if (cflag & PARENB) {
930 if (cflag & PARODD) {
931 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
932 config->bParity = TI_UART_ODD_PARITY;
934 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
935 config->bParity = TI_UART_EVEN_PARITY;
938 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
939 config->bParity = TI_UART_NO_PARITY;
943 config->bStopBits = TI_UART_2_STOP_BITS;
945 config->bStopBits = TI_UART_1_STOP_BITS;
947 if (cflag & CRTSCTS) {
948 /* RTS flow control must be off to drop RTS for baud rate B0 */
949 if ((cflag & CBAUD) != B0)
950 config->wFlags |= TI_UART_ENABLE_RTS_IN;
951 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
954 ti_restart_read(tport, tty);
957 if (I_IXOFF(tty) || I_IXON(tty)) {
958 config->cXon = START_CHAR(tty);
959 config->cXoff = STOP_CHAR(tty);
962 config->wFlags |= TI_UART_ENABLE_X_IN;
964 ti_restart_read(tport, tty);
967 config->wFlags |= TI_UART_ENABLE_X_OUT;
970 baud = tty_get_baud_rate(tty);
973 if (tport->tp_tdev->td_is_3410)
974 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
976 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
978 /* FIXME: Should calculate resulting baud here and report it back */
979 if ((cflag & CBAUD) != B0)
980 tty_encode_baud_rate(tty, baud, baud);
982 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
983 __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
985 cpu_to_be16s(&config->wBaudRate);
986 cpu_to_be16s(&config->wFlags);
988 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
989 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
992 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
993 __func__, port_number, status);
995 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
996 mcr = tport->tp_shadow_mcr;
997 /* if baud rate is B0, clear RTS and DTR */
998 if ((cflag & CBAUD) == B0)
999 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1000 status = ti_set_mcr(tport, mcr);
1003 "%s - cannot set modem control on port %d, %d\n",
1004 __func__, port_number, status);
1010 static int ti_tiocmget(struct tty_struct *tty)
1012 struct usb_serial_port *port = tty->driver_data;
1013 struct ti_port *tport = usb_get_serial_port_data(port);
1014 unsigned int result;
1017 unsigned long flags;
1019 dbg("%s - port %d", __func__, port->number);
1024 spin_lock_irqsave(&tport->tp_lock, flags);
1025 msr = tport->tp_msr;
1026 mcr = tport->tp_shadow_mcr;
1027 spin_unlock_irqrestore(&tport->tp_lock, flags);
1029 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1030 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1031 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1032 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1033 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1034 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1035 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1037 dbg("%s - 0x%04X", __func__, result);
1043 static int ti_tiocmset(struct tty_struct *tty,
1044 unsigned int set, unsigned int clear)
1046 struct usb_serial_port *port = tty->driver_data;
1047 struct ti_port *tport = usb_get_serial_port_data(port);
1049 unsigned long flags;
1051 dbg("%s - port %d", __func__, port->number);
1056 spin_lock_irqsave(&tport->tp_lock, flags);
1057 mcr = tport->tp_shadow_mcr;
1059 if (set & TIOCM_RTS)
1061 if (set & TIOCM_DTR)
1063 if (set & TIOCM_LOOP)
1066 if (clear & TIOCM_RTS)
1068 if (clear & TIOCM_DTR)
1070 if (clear & TIOCM_LOOP)
1071 mcr &= ~TI_MCR_LOOP;
1072 spin_unlock_irqrestore(&tport->tp_lock, flags);
1074 return ti_set_mcr(tport, mcr);
1078 static void ti_break(struct tty_struct *tty, int break_state)
1080 struct usb_serial_port *port = tty->driver_data;
1081 struct ti_port *tport = usb_get_serial_port_data(port);
1084 dbg("%s - state = %d", __func__, break_state);
1089 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1091 status = ti_write_byte(tport->tp_tdev,
1092 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1093 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1096 dbg("%s - error setting break, %d", __func__, status);
1100 static void ti_interrupt_callback(struct urb *urb)
1102 struct ti_device *tdev = urb->context;
1103 struct usb_serial_port *port;
1104 struct usb_serial *serial = tdev->td_serial;
1105 struct ti_port *tport;
1106 struct device *dev = &urb->dev->dev;
1107 unsigned char *data = urb->transfer_buffer;
1108 int length = urb->actual_length;
1111 int status = urb->status;
1115 dbg("%s", __func__);
1123 dbg("%s - urb shutting down, %d", __func__, status);
1124 tdev->td_urb_error = 1;
1127 dev_err(dev, "%s - nonzero urb status, %d\n",
1129 tdev->td_urb_error = 1;
1134 dbg("%s - bad packet size, %d", __func__, length);
1138 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1139 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1143 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1144 function = TI_GET_FUNC_FROM_CODE(data[0]);
1146 dbg("%s - port_number %d, function %d, data 0x%02X",
1147 __func__, port_number, function, data[1]);
1149 if (port_number >= serial->num_ports) {
1150 dev_err(dev, "%s - bad port number, %d\n",
1151 __func__, port_number);
1155 port = serial->port[port_number];
1157 tport = usb_get_serial_port_data(port);
1162 case TI_CODE_DATA_ERROR:
1163 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1164 __func__, port_number, data[1]);
1167 case TI_CODE_MODEM_STATUS:
1169 dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr);
1170 ti_handle_new_msr(tport, msr);
1174 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1180 retval = usb_submit_urb(urb, GFP_ATOMIC);
1182 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1187 static void ti_bulk_in_callback(struct urb *urb)
1189 struct ti_port *tport = urb->context;
1190 struct usb_serial_port *port = tport->tp_port;
1191 struct device *dev = &urb->dev->dev;
1192 int status = urb->status;
1194 struct tty_struct *tty;
1196 dbg("%s", __func__);
1204 dbg("%s - urb shutting down, %d", __func__, status);
1205 tport->tp_tdev->td_urb_error = 1;
1206 wake_up_interruptible(&tport->tp_write_wait);
1209 dev_err(dev, "%s - nonzero urb status, %d\n",
1211 tport->tp_tdev->td_urb_error = 1;
1212 wake_up_interruptible(&tport->tp_write_wait);
1215 if (status == -EPIPE)
1219 dev_err(dev, "%s - stopping read!\n", __func__);
1223 tty = tty_port_tty_get(&port->port);
1225 if (urb->actual_length) {
1226 usb_serial_debug_data(debug, dev, __func__,
1227 urb->actual_length, urb->transfer_buffer);
1229 if (!tport->tp_is_open)
1230 dbg("%s - port closed, dropping data",
1233 ti_recv(&urb->dev->dev, tty,
1234 urb->transfer_buffer,
1235 urb->actual_length);
1236 spin_lock(&tport->tp_lock);
1237 tport->tp_icount.rx += urb->actual_length;
1238 spin_unlock(&tport->tp_lock);
1244 /* continue to read unless stopping */
1245 spin_lock(&tport->tp_lock);
1246 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
1247 urb->dev = port->serial->dev;
1248 retval = usb_submit_urb(urb, GFP_ATOMIC);
1249 } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
1250 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1252 spin_unlock(&tport->tp_lock);
1254 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1259 static void ti_bulk_out_callback(struct urb *urb)
1261 struct ti_port *tport = urb->context;
1262 struct usb_serial_port *port = tport->tp_port;
1263 struct device *dev = &urb->dev->dev;
1264 int status = urb->status;
1266 dbg("%s - port %d", __func__, port->number);
1268 tport->tp_write_urb_in_use = 0;
1276 dbg("%s - urb shutting down, %d", __func__, status);
1277 tport->tp_tdev->td_urb_error = 1;
1278 wake_up_interruptible(&tport->tp_write_wait);
1281 dev_err(dev, "%s - nonzero urb status, %d\n",
1283 tport->tp_tdev->td_urb_error = 1;
1284 wake_up_interruptible(&tport->tp_write_wait);
1287 /* send any buffered data */
1292 static void ti_recv(struct device *dev, struct tty_struct *tty,
1293 unsigned char *data, int length)
1298 cnt = tty_insert_flip_string(tty, data, length);
1300 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1301 __func__, length - cnt);
1305 tty_flip_buffer_push(tty);
1308 } while (length > 0);
1313 static void ti_send(struct ti_port *tport)
1316 struct usb_serial_port *port = tport->tp_port;
1317 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1318 unsigned long flags;
1321 dbg("%s - port %d", __func__, port->number);
1323 spin_lock_irqsave(&tport->tp_lock, flags);
1325 if (tport->tp_write_urb_in_use)
1328 count = kfifo_out(&tport->write_fifo,
1329 port->write_urb->transfer_buffer,
1330 port->bulk_out_size);
1335 tport->tp_write_urb_in_use = 1;
1337 spin_unlock_irqrestore(&tport->tp_lock, flags);
1339 usb_serial_debug_data(debug, &port->dev, __func__, count,
1340 port->write_urb->transfer_buffer);
1342 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1343 usb_sndbulkpipe(port->serial->dev,
1344 port->bulk_out_endpointAddress),
1345 port->write_urb->transfer_buffer, count,
1346 ti_bulk_out_callback, tport);
1348 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1350 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1352 tport->tp_write_urb_in_use = 0;
1353 /* TODO: reschedule ti_send */
1355 spin_lock_irqsave(&tport->tp_lock, flags);
1356 tport->tp_icount.tx += count;
1357 spin_unlock_irqrestore(&tport->tp_lock, flags);
1360 /* more room in the buffer for new writes, wakeup */
1364 wake_up_interruptible(&tport->tp_write_wait);
1367 spin_unlock_irqrestore(&tport->tp_lock, flags);
1373 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1375 unsigned long flags;
1378 status = ti_write_byte(tport->tp_tdev,
1379 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1380 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1382 spin_lock_irqsave(&tport->tp_lock, flags);
1384 tport->tp_shadow_mcr = mcr;
1385 spin_unlock_irqrestore(&tport->tp_lock, flags);
1391 static int ti_get_lsr(struct ti_port *tport)
1394 struct ti_device *tdev = tport->tp_tdev;
1395 struct usb_serial_port *port = tport->tp_port;
1396 int port_number = port->number - port->serial->minor;
1397 struct ti_port_status *data;
1399 dbg("%s - port %d", __func__, port->number);
1401 size = sizeof(struct ti_port_status);
1402 data = kmalloc(size, GFP_KERNEL);
1404 dev_err(&port->dev, "%s - out of memory\n", __func__);
1408 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1409 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1412 "%s - get port status command failed, %d\n",
1417 dbg("%s - lsr 0x%02X", __func__, data->bLSR);
1419 tport->tp_lsr = data->bLSR;
1427 static int ti_get_serial_info(struct ti_port *tport,
1428 struct serial_struct __user *ret_arg)
1430 struct usb_serial_port *port = tport->tp_port;
1431 struct serial_struct ret_serial;
1436 memset(&ret_serial, 0, sizeof(ret_serial));
1438 ret_serial.type = PORT_16550A;
1439 ret_serial.line = port->serial->minor;
1440 ret_serial.port = port->number - port->serial->minor;
1441 ret_serial.flags = tport->tp_flags;
1442 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1443 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1444 ret_serial.closing_wait = tport->tp_closing_wait;
1446 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1453 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1454 struct serial_struct __user *new_arg)
1456 struct serial_struct new_serial;
1458 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1461 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1462 tport->tp_closing_wait = new_serial.closing_wait;
1468 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1470 struct async_icount *icount;
1471 struct tty_struct *tty;
1472 unsigned long flags;
1474 dbg("%s - msr 0x%02X", __func__, msr);
1476 if (msr & TI_MSR_DELTA_MASK) {
1477 spin_lock_irqsave(&tport->tp_lock, flags);
1478 icount = &tport->tp_icount;
1479 if (msr & TI_MSR_DELTA_CTS)
1481 if (msr & TI_MSR_DELTA_DSR)
1483 if (msr & TI_MSR_DELTA_CD)
1485 if (msr & TI_MSR_DELTA_RI)
1487 wake_up_interruptible(&tport->tp_port->delta_msr_wait);
1488 spin_unlock_irqrestore(&tport->tp_lock, flags);
1491 tport->tp_msr = msr & TI_MSR_MASK;
1493 /* handle CTS flow control */
1494 tty = tty_port_tty_get(&tport->tp_port->port);
1495 if (tty && C_CRTSCTS(tty)) {
1496 if (msr & TI_MSR_CTS) {
1497 tty->hw_stopped = 0;
1500 tty->hw_stopped = 1;
1507 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1509 struct ti_device *tdev = tport->tp_tdev;
1510 struct usb_serial_port *port = tport->tp_port;
1513 dbg("%s - port %d", __func__, port->number);
1515 spin_lock_irq(&tport->tp_lock);
1517 /* wait for data to drain from the buffer */
1518 tdev->td_urb_error = 0;
1519 init_waitqueue_entry(&wait, current);
1520 add_wait_queue(&tport->tp_write_wait, &wait);
1522 set_current_state(TASK_INTERRUPTIBLE);
1523 if (kfifo_len(&tport->write_fifo) == 0
1524 || timeout == 0 || signal_pending(current)
1525 || tdev->td_urb_error
1526 || port->serial->disconnected) /* disconnect */
1528 spin_unlock_irq(&tport->tp_lock);
1529 timeout = schedule_timeout(timeout);
1530 spin_lock_irq(&tport->tp_lock);
1532 set_current_state(TASK_RUNNING);
1533 remove_wait_queue(&tport->tp_write_wait, &wait);
1535 /* flush any remaining data in the buffer */
1537 kfifo_reset_out(&tport->write_fifo);
1539 spin_unlock_irq(&tport->tp_lock);
1541 mutex_lock(&port->serial->disc_mutex);
1542 /* wait for data to drain from the device */
1543 /* wait for empty tx register, plus 20 ms */
1545 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1546 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1547 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1548 && !port->serial->disconnected) {
1549 if (ti_get_lsr(tport))
1551 mutex_unlock(&port->serial->disc_mutex);
1552 msleep_interruptible(20);
1553 mutex_lock(&port->serial->disc_mutex);
1555 mutex_unlock(&port->serial->disc_mutex);
1559 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1561 unsigned long flags;
1563 spin_lock_irqsave(&tport->tp_lock, flags);
1565 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1566 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1568 spin_unlock_irqrestore(&tport->tp_lock, flags);
1572 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1576 unsigned long flags;
1578 spin_lock_irqsave(&tport->tp_lock, flags);
1580 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1581 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1582 urb = tport->tp_port->read_urb;
1583 spin_unlock_irqrestore(&tport->tp_lock, flags);
1584 urb->complete = ti_bulk_in_callback;
1585 urb->context = tport;
1586 urb->dev = tport->tp_port->serial->dev;
1587 status = usb_submit_urb(urb, GFP_KERNEL);
1589 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1590 spin_unlock_irqrestore(&tport->tp_lock, flags);
1597 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1598 __u16 moduleid, __u16 value, __u8 *data, int size)
1602 status = usb_control_msg(tdev->td_serial->dev,
1603 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1604 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1605 value, moduleid, data, size, 1000);
1617 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1618 __u16 moduleid, __u16 value, __u8 *data, int size)
1622 status = usb_control_msg(tdev->td_serial->dev,
1623 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1624 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1625 value, moduleid, data, size, 1000);
1637 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1638 __u8 mask, __u8 byte)
1642 struct ti_write_data_bytes *data;
1643 struct device *dev = &tdev->td_serial->dev->dev;
1645 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1646 __func__, addr, mask, byte);
1648 size = sizeof(struct ti_write_data_bytes) + 2;
1649 data = kmalloc(size, GFP_KERNEL);
1651 dev_err(dev, "%s - out of memory\n", __func__);
1655 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1656 data->bDataType = TI_RW_DATA_BYTE;
1657 data->bDataCounter = 1;
1658 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1659 data->wBaseAddrLo = cpu_to_be16(addr);
1660 data->bData[0] = mask;
1661 data->bData[1] = byte;
1663 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1664 (__u8 *)data, size);
1667 dev_err(dev, "%s - failed, %d\n", __func__, status);
1674 static int ti_do_download(struct usb_device *dev, int pipe,
1675 u8 *buffer, int size)
1680 struct ti_firmware_header *header;
1684 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1685 cs = (__u8)(cs + buffer[pos]);
1687 header = (struct ti_firmware_header *)buffer;
1688 header->wLength = cpu_to_le16((__u16)(size
1689 - sizeof(struct ti_firmware_header)));
1690 header->bCheckSum = cs;
1692 dbg("%s - downloading firmware", __func__);
1693 for (pos = 0; pos < size; pos += done) {
1694 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1695 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1703 static int ti_download_firmware(struct ti_device *tdev)
1708 struct usb_device *dev = tdev->td_serial->dev;
1709 unsigned int pipe = usb_sndbulkpipe(dev,
1710 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1711 const struct firmware *fw_p;
1714 dbg("%s\n", __func__);
1715 /* try ID specific firmware first, then try generic firmware */
1716 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1717 dev->descriptor.idProduct);
1718 if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) {
1720 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1721 switch (dev->descriptor.idProduct) {
1722 case MTS_CDMA_PRODUCT_ID:
1723 strcpy(buf, "mts_cdma.fw");
1725 case MTS_GSM_PRODUCT_ID:
1726 strcpy(buf, "mts_gsm.fw");
1728 case MTS_EDGE_PRODUCT_ID:
1729 strcpy(buf, "mts_edge.fw");
1731 case MTS_MT9234MU_PRODUCT_ID:
1732 strcpy(buf, "mts_mt9234mu.fw");
1734 case MTS_MT9234ZBA_PRODUCT_ID:
1735 strcpy(buf, "mts_mt9234zba.fw");
1737 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1738 strcpy(buf, "mts_mt9234zba.fw");
1741 if (buf[0] == '\0') {
1742 if (tdev->td_is_3410)
1743 strcpy(buf, "ti_3410.fw");
1745 strcpy(buf, "ti_5052.fw");
1747 status = request_firmware(&fw_p, buf, &dev->dev);
1750 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1753 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1754 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1755 release_firmware(fw_p);
1759 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1760 buffer = kmalloc(buffer_size, GFP_KERNEL);
1762 memcpy(buffer, fw_p->data, fw_p->size);
1763 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1764 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1767 dbg("%s ENOMEM\n", __func__);
1770 release_firmware(fw_p);
1772 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1777 dbg("%s - download successful", __func__);