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1/* vi: ts=8 sw=8
2 *
3 * TI 3410/5052 USB Serial Driver
4 *
5 * Copyright (C) 2004 Texas Instruments
6 *
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
10 *
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.
15 *
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>.
19 */
20
21#include <linux/kernel.h>
22#include <linux/errno.h>
23#include <linux/firmware.h>
24#include <linux/slab.h>
25#include <linux/tty.h>
26#include <linux/tty_driver.h>
27#include <linux/tty_flip.h>
28#include <linux/module.h>
29#include <linux/spinlock.h>
30#include <linux/ioctl.h>
31#include <linux/serial.h>
32#include <linux/kfifo.h>
33#include <linux/mutex.h>
34#include <linux/uaccess.h>
35#include <linux/usb.h>
36#include <linux/usb/serial.h>
37
38#include "ti_usb_3410_5052.h"
39
40/* Defines */
41
42#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
43#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
44
45#define TI_FIRMWARE_BUF_SIZE 16284
46
47#define TI_TRANSFER_TIMEOUT 2
48
49#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
50
51/* supported setserial flags */
52#define TI_SET_SERIAL_FLAGS 0
53
54/* read urb states */
55#define TI_READ_URB_RUNNING 0
56#define TI_READ_URB_STOPPING 1
57#define TI_READ_URB_STOPPED 2
58
59#define TI_EXTRA_VID_PID_COUNT 5
60
61
62/* Structures */
63
64struct ti_port {
65 int tp_is_open;
66 __u8 tp_msr;
67 __u8 tp_shadow_mcr;
68 __u8 tp_uart_mode; /* 232 or 485 modes */
69 unsigned int tp_uart_base_addr;
70 int tp_flags;
71 struct ti_device *tp_tdev;
72 struct usb_serial_port *tp_port;
73 spinlock_t tp_lock;
74 int tp_read_urb_state;
75 int tp_write_urb_in_use;
76};
77
78struct ti_device {
79 struct mutex td_open_close_lock;
80 int td_open_port_count;
81 struct usb_serial *td_serial;
82 int td_is_3410;
83 int td_urb_error;
84};
85
86
87/* Function Declarations */
88
89static int ti_startup(struct usb_serial *serial);
90static void ti_release(struct usb_serial *serial);
91static int ti_port_probe(struct usb_serial_port *port);
92static int ti_port_remove(struct usb_serial_port *port);
93static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
94static void ti_close(struct usb_serial_port *port);
95static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
96 const unsigned char *data, int count);
97static int ti_write_room(struct tty_struct *tty);
98static int ti_chars_in_buffer(struct tty_struct *tty);
99static bool ti_tx_empty(struct usb_serial_port *port);
100static void ti_throttle(struct tty_struct *tty);
101static void ti_unthrottle(struct tty_struct *tty);
102static int ti_ioctl(struct tty_struct *tty,
103 unsigned int cmd, unsigned long arg);
104static void ti_set_termios(struct tty_struct *tty,
105 struct usb_serial_port *port, struct ktermios *old_termios);
106static int ti_tiocmget(struct tty_struct *tty);
107static int ti_tiocmset(struct tty_struct *tty,
108 unsigned int set, unsigned int clear);
109static void ti_break(struct tty_struct *tty, int break_state);
110static void ti_interrupt_callback(struct urb *urb);
111static void ti_bulk_in_callback(struct urb *urb);
112static void ti_bulk_out_callback(struct urb *urb);
113
114static void ti_recv(struct usb_serial_port *port, unsigned char *data,
115 int length);
116static void ti_send(struct ti_port *tport);
117static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
118static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
119static int ti_get_serial_info(struct ti_port *tport,
120 struct serial_struct __user *ret_arg);
121static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
122 struct serial_struct __user *new_arg);
123static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
124
125static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
126static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
127
128static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
129 __u16 moduleid, __u16 value, __u8 *data, int size);
130static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
131 __u16 moduleid, __u16 value, __u8 *data, int size);
132
133static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
134 unsigned long addr, __u8 mask, __u8 byte);
135
136static int ti_download_firmware(struct ti_device *tdev);
137
138
139/* Data */
140
141/* module parameters */
142static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
143
144/* supported devices */
145static const struct usb_device_id ti_id_table_3410[] = {
146 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
147 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
148 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
149 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
150 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
151 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
152 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
153 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
154 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
155 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
156 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
157 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
158 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
159 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
160 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
161 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
162 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
163 { } /* terminator */
164};
165
166static const struct usb_device_id ti_id_table_5052[] = {
167 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
168 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
169 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
170 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
171 { } /* terminator */
172};
173
174static const struct usb_device_id ti_id_table_combined[] = {
175 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
176 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
177 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
178 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
179 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
180 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
181 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
182 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
183 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
184 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
185 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
186 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
187 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
188 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
189 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
190 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
191 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
192 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
193 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
194 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
195 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
196 { } /* terminator */
197};
198
199static struct usb_serial_driver ti_1port_device = {
200 .driver = {
201 .owner = THIS_MODULE,
202 .name = "ti_usb_3410_5052_1",
203 },
204 .description = "TI USB 3410 1 port adapter",
205 .id_table = ti_id_table_3410,
206 .num_ports = 1,
207 .attach = ti_startup,
208 .release = ti_release,
209 .port_probe = ti_port_probe,
210 .port_remove = ti_port_remove,
211 .open = ti_open,
212 .close = ti_close,
213 .write = ti_write,
214 .write_room = ti_write_room,
215 .chars_in_buffer = ti_chars_in_buffer,
216 .tx_empty = ti_tx_empty,
217 .throttle = ti_throttle,
218 .unthrottle = ti_unthrottle,
219 .ioctl = ti_ioctl,
220 .set_termios = ti_set_termios,
221 .tiocmget = ti_tiocmget,
222 .tiocmset = ti_tiocmset,
223 .tiocmiwait = usb_serial_generic_tiocmiwait,
224 .get_icount = usb_serial_generic_get_icount,
225 .break_ctl = ti_break,
226 .read_int_callback = ti_interrupt_callback,
227 .read_bulk_callback = ti_bulk_in_callback,
228 .write_bulk_callback = ti_bulk_out_callback,
229};
230
231static struct usb_serial_driver ti_2port_device = {
232 .driver = {
233 .owner = THIS_MODULE,
234 .name = "ti_usb_3410_5052_2",
235 },
236 .description = "TI USB 5052 2 port adapter",
237 .id_table = ti_id_table_5052,
238 .num_ports = 2,
239 .attach = ti_startup,
240 .release = ti_release,
241 .port_probe = ti_port_probe,
242 .port_remove = ti_port_remove,
243 .open = ti_open,
244 .close = ti_close,
245 .write = ti_write,
246 .write_room = ti_write_room,
247 .chars_in_buffer = ti_chars_in_buffer,
248 .tx_empty = ti_tx_empty,
249 .throttle = ti_throttle,
250 .unthrottle = ti_unthrottle,
251 .ioctl = ti_ioctl,
252 .set_termios = ti_set_termios,
253 .tiocmget = ti_tiocmget,
254 .tiocmset = ti_tiocmset,
255 .tiocmiwait = usb_serial_generic_tiocmiwait,
256 .get_icount = usb_serial_generic_get_icount,
257 .break_ctl = ti_break,
258 .read_int_callback = ti_interrupt_callback,
259 .read_bulk_callback = ti_bulk_in_callback,
260 .write_bulk_callback = ti_bulk_out_callback,
261};
262
263static struct usb_serial_driver * const serial_drivers[] = {
264 &ti_1port_device, &ti_2port_device, NULL
265};
266
267/* Module */
268
269MODULE_AUTHOR(TI_DRIVER_AUTHOR);
270MODULE_DESCRIPTION(TI_DRIVER_DESC);
271MODULE_LICENSE("GPL");
272
273MODULE_FIRMWARE("ti_3410.fw");
274MODULE_FIRMWARE("ti_5052.fw");
275MODULE_FIRMWARE("mts_cdma.fw");
276MODULE_FIRMWARE("mts_gsm.fw");
277MODULE_FIRMWARE("mts_edge.fw");
278MODULE_FIRMWARE("mts_mt9234mu.fw");
279MODULE_FIRMWARE("mts_mt9234zba.fw");
280
281module_param(closing_wait, int, S_IRUGO | S_IWUSR);
282MODULE_PARM_DESC(closing_wait,
283 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
284
285MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
286
287module_usb_serial_driver(serial_drivers, ti_id_table_combined);
288
289/* Functions */
290
291static int ti_startup(struct usb_serial *serial)
292{
293 struct ti_device *tdev;
294 struct usb_device *dev = serial->dev;
295 int status;
296
297 dev_dbg(&dev->dev,
298 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
299 __func__, le16_to_cpu(dev->descriptor.idProduct),
300 dev->descriptor.bNumConfigurations,
301 dev->actconfig->desc.bConfigurationValue);
302
303 /* create device structure */
304 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
305 if (!tdev)
306 return -ENOMEM;
307
308 mutex_init(&tdev->td_open_close_lock);
309 tdev->td_serial = serial;
310 usb_set_serial_data(serial, tdev);
311
312 /* determine device type */
313 if (serial->type == &ti_1port_device)
314 tdev->td_is_3410 = 1;
315 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
316 tdev->td_is_3410 ? "3410" : "5052");
317
318 /* if we have only 1 configuration, download firmware */
319 if (dev->descriptor.bNumConfigurations == 1) {
320 status = ti_download_firmware(tdev);
321
322 if (status != 0)
323 goto free_tdev;
324
325 /* 3410 must be reset, 5052 resets itself */
326 if (tdev->td_is_3410) {
327 msleep_interruptible(100);
328 usb_reset_device(dev);
329 }
330
331 status = -ENODEV;
332 goto free_tdev;
333 }
334
335 /* the second configuration must be set */
336 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
337 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
338 status = status ? status : -ENODEV;
339 goto free_tdev;
340 }
341
342 return 0;
343
344free_tdev:
345 kfree(tdev);
346 usb_set_serial_data(serial, NULL);
347 return status;
348}
349
350
351static void ti_release(struct usb_serial *serial)
352{
353 struct ti_device *tdev = usb_get_serial_data(serial);
354
355 kfree(tdev);
356}
357
358static int ti_port_probe(struct usb_serial_port *port)
359{
360 struct ti_port *tport;
361
362 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
363 if (!tport)
364 return -ENOMEM;
365
366 spin_lock_init(&tport->tp_lock);
367 if (port == port->serial->port[0])
368 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
369 else
370 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
371 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
372 tport->tp_port = port;
373 tport->tp_tdev = usb_get_serial_data(port->serial);
374 tport->tp_uart_mode = 0; /* default is RS232 */
375
376 usb_set_serial_port_data(port, tport);
377
378 port->port.drain_delay = 3;
379
380 return 0;
381}
382
383static int ti_port_remove(struct usb_serial_port *port)
384{
385 struct ti_port *tport;
386
387 tport = usb_get_serial_port_data(port);
388 kfree(tport);
389
390 return 0;
391}
392
393static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
394{
395 struct ti_port *tport = usb_get_serial_port_data(port);
396 struct ti_device *tdev;
397 struct usb_device *dev;
398 struct urb *urb;
399 int port_number;
400 int status;
401 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
402 TI_PIPE_TIMEOUT_ENABLE |
403 (TI_TRANSFER_TIMEOUT << 2));
404
405 if (tport == NULL)
406 return -ENODEV;
407
408 dev = port->serial->dev;
409 tdev = tport->tp_tdev;
410
411 /* only one open on any port on a device at a time */
412 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
413 return -ERESTARTSYS;
414
415 port_number = port->port_number;
416
417 tport->tp_msr = 0;
418 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
419
420 /* start interrupt urb the first time a port is opened on this device */
421 if (tdev->td_open_port_count == 0) {
422 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
423 urb = tdev->td_serial->port[0]->interrupt_in_urb;
424 if (!urb) {
425 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
426 status = -EINVAL;
427 goto release_lock;
428 }
429 urb->context = tdev;
430 status = usb_submit_urb(urb, GFP_KERNEL);
431 if (status) {
432 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
433 goto release_lock;
434 }
435 }
436
437 if (tty)
438 ti_set_termios(tty, port, &tty->termios);
439
440 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
441 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
442 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
443 if (status) {
444 dev_err(&port->dev, "%s - cannot send open command, %d\n",
445 __func__, status);
446 goto unlink_int_urb;
447 }
448
449 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
450 status = ti_command_out_sync(tdev, TI_START_PORT,
451 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
452 if (status) {
453 dev_err(&port->dev, "%s - cannot send start command, %d\n",
454 __func__, status);
455 goto unlink_int_urb;
456 }
457
458 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
459 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
460 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
461 if (status) {
462 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
463 __func__, status);
464 goto unlink_int_urb;
465 }
466 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
467 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
468 if (status) {
469 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
470 __func__, status);
471 goto unlink_int_urb;
472 }
473
474 /* reset the data toggle on the bulk endpoints to work around bug in
475 * host controllers where things get out of sync some times */
476 usb_clear_halt(dev, port->write_urb->pipe);
477 usb_clear_halt(dev, port->read_urb->pipe);
478
479 if (tty)
480 ti_set_termios(tty, port, &tty->termios);
481
482 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
483 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
484 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
485 if (status) {
486 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
487 __func__, status);
488 goto unlink_int_urb;
489 }
490
491 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
492 status = ti_command_out_sync(tdev, TI_START_PORT,
493 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
494 if (status) {
495 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
496 __func__, status);
497 goto unlink_int_urb;
498 }
499
500 /* start read urb */
501 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
502 urb = port->read_urb;
503 if (!urb) {
504 dev_err(&port->dev, "%s - no read urb\n", __func__);
505 status = -EINVAL;
506 goto unlink_int_urb;
507 }
508 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
509 urb->context = tport;
510 status = usb_submit_urb(urb, GFP_KERNEL);
511 if (status) {
512 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
513 __func__, status);
514 goto unlink_int_urb;
515 }
516
517 tport->tp_is_open = 1;
518 ++tdev->td_open_port_count;
519
520 goto release_lock;
521
522unlink_int_urb:
523 if (tdev->td_open_port_count == 0)
524 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
525release_lock:
526 mutex_unlock(&tdev->td_open_close_lock);
527 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
528 return status;
529}
530
531
532static void ti_close(struct usb_serial_port *port)
533{
534 struct ti_device *tdev;
535 struct ti_port *tport;
536 int port_number;
537 int status;
538 int do_unlock;
539 unsigned long flags;
540
541 tdev = usb_get_serial_data(port->serial);
542 tport = usb_get_serial_port_data(port);
543 if (tdev == NULL || tport == NULL)
544 return;
545
546 tport->tp_is_open = 0;
547
548 usb_kill_urb(port->read_urb);
549 usb_kill_urb(port->write_urb);
550 tport->tp_write_urb_in_use = 0;
551 spin_lock_irqsave(&tport->tp_lock, flags);
552 kfifo_reset_out(&port->write_fifo);
553 spin_unlock_irqrestore(&tport->tp_lock, flags);
554
555 port_number = port->port_number;
556
557 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
558 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
559 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
560 if (status)
561 dev_err(&port->dev,
562 "%s - cannot send close port command, %d\n"
563 , __func__, status);
564
565 /* if mutex_lock is interrupted, continue anyway */
566 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
567 --tport->tp_tdev->td_open_port_count;
568 if (tport->tp_tdev->td_open_port_count <= 0) {
569 /* last port is closed, shut down interrupt urb */
570 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
571 tport->tp_tdev->td_open_port_count = 0;
572 }
573 if (do_unlock)
574 mutex_unlock(&tdev->td_open_close_lock);
575}
576
577
578static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
579 const unsigned char *data, int count)
580{
581 struct ti_port *tport = usb_get_serial_port_data(port);
582
583 if (count == 0) {
584 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
585 return 0;
586 }
587
588 if (tport == NULL || !tport->tp_is_open)
589 return -ENODEV;
590
591 count = kfifo_in_locked(&port->write_fifo, data, count,
592 &tport->tp_lock);
593 ti_send(tport);
594
595 return count;
596}
597
598
599static int ti_write_room(struct tty_struct *tty)
600{
601 struct usb_serial_port *port = tty->driver_data;
602 struct ti_port *tport = usb_get_serial_port_data(port);
603 int room = 0;
604 unsigned long flags;
605
606 if (tport == NULL)
607 return 0;
608
609 spin_lock_irqsave(&tport->tp_lock, flags);
610 room = kfifo_avail(&port->write_fifo);
611 spin_unlock_irqrestore(&tport->tp_lock, flags);
612
613 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
614 return room;
615}
616
617
618static int ti_chars_in_buffer(struct tty_struct *tty)
619{
620 struct usb_serial_port *port = tty->driver_data;
621 struct ti_port *tport = usb_get_serial_port_data(port);
622 int chars = 0;
623 unsigned long flags;
624
625 if (tport == NULL)
626 return 0;
627
628 spin_lock_irqsave(&tport->tp_lock, flags);
629 chars = kfifo_len(&port->write_fifo);
630 spin_unlock_irqrestore(&tport->tp_lock, flags);
631
632 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
633 return chars;
634}
635
636static bool ti_tx_empty(struct usb_serial_port *port)
637{
638 struct ti_port *tport = usb_get_serial_port_data(port);
639 int ret;
640 u8 lsr;
641
642 ret = ti_get_lsr(tport, &lsr);
643 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
644 return false;
645
646 return true;
647}
648
649static void ti_throttle(struct tty_struct *tty)
650{
651 struct usb_serial_port *port = tty->driver_data;
652 struct ti_port *tport = usb_get_serial_port_data(port);
653
654 if (tport == NULL)
655 return;
656
657 if (I_IXOFF(tty) || C_CRTSCTS(tty))
658 ti_stop_read(tport, tty);
659
660}
661
662
663static void ti_unthrottle(struct tty_struct *tty)
664{
665 struct usb_serial_port *port = tty->driver_data;
666 struct ti_port *tport = usb_get_serial_port_data(port);
667 int status;
668
669 if (tport == NULL)
670 return;
671
672 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
673 status = ti_restart_read(tport, tty);
674 if (status)
675 dev_err(&port->dev, "%s - cannot restart read, %d\n",
676 __func__, status);
677 }
678}
679
680static int ti_ioctl(struct tty_struct *tty,
681 unsigned int cmd, unsigned long arg)
682{
683 struct usb_serial_port *port = tty->driver_data;
684 struct ti_port *tport = usb_get_serial_port_data(port);
685
686 if (tport == NULL)
687 return -ENODEV;
688
689 switch (cmd) {
690 case TIOCGSERIAL:
691 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
692 return ti_get_serial_info(tport,
693 (struct serial_struct __user *)arg);
694 case TIOCSSERIAL:
695 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
696 return ti_set_serial_info(tty, tport,
697 (struct serial_struct __user *)arg);
698 }
699 return -ENOIOCTLCMD;
700}
701
702
703static void ti_set_termios(struct tty_struct *tty,
704 struct usb_serial_port *port, struct ktermios *old_termios)
705{
706 struct ti_port *tport = usb_get_serial_port_data(port);
707 struct ti_uart_config *config;
708 tcflag_t cflag, iflag;
709 int baud;
710 int status;
711 int port_number = port->port_number;
712 unsigned int mcr;
713
714 cflag = tty->termios.c_cflag;
715 iflag = tty->termios.c_iflag;
716
717 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
718 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
719 old_termios->c_cflag, old_termios->c_iflag);
720
721 if (tport == NULL)
722 return;
723
724 config = kmalloc(sizeof(*config), GFP_KERNEL);
725 if (!config)
726 return;
727
728 config->wFlags = 0;
729
730 /* these flags must be set */
731 config->wFlags |= TI_UART_ENABLE_MS_INTS;
732 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
733 config->bUartMode = (__u8)(tport->tp_uart_mode);
734
735 switch (cflag & CSIZE) {
736 case CS5:
737 config->bDataBits = TI_UART_5_DATA_BITS;
738 break;
739 case CS6:
740 config->bDataBits = TI_UART_6_DATA_BITS;
741 break;
742 case CS7:
743 config->bDataBits = TI_UART_7_DATA_BITS;
744 break;
745 default:
746 case CS8:
747 config->bDataBits = TI_UART_8_DATA_BITS;
748 break;
749 }
750
751 /* CMSPAR isn't supported by this driver */
752 tty->termios.c_cflag &= ~CMSPAR;
753
754 if (cflag & PARENB) {
755 if (cflag & PARODD) {
756 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
757 config->bParity = TI_UART_ODD_PARITY;
758 } else {
759 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
760 config->bParity = TI_UART_EVEN_PARITY;
761 }
762 } else {
763 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
764 config->bParity = TI_UART_NO_PARITY;
765 }
766
767 if (cflag & CSTOPB)
768 config->bStopBits = TI_UART_2_STOP_BITS;
769 else
770 config->bStopBits = TI_UART_1_STOP_BITS;
771
772 if (cflag & CRTSCTS) {
773 /* RTS flow control must be off to drop RTS for baud rate B0 */
774 if ((cflag & CBAUD) != B0)
775 config->wFlags |= TI_UART_ENABLE_RTS_IN;
776 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
777 } else {
778 ti_restart_read(tport, tty);
779 }
780
781 if (I_IXOFF(tty) || I_IXON(tty)) {
782 config->cXon = START_CHAR(tty);
783 config->cXoff = STOP_CHAR(tty);
784
785 if (I_IXOFF(tty))
786 config->wFlags |= TI_UART_ENABLE_X_IN;
787 else
788 ti_restart_read(tport, tty);
789
790 if (I_IXON(tty))
791 config->wFlags |= TI_UART_ENABLE_X_OUT;
792 }
793
794 baud = tty_get_baud_rate(tty);
795 if (!baud)
796 baud = 9600;
797 if (tport->tp_tdev->td_is_3410)
798 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
799 else
800 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
801
802 /* FIXME: Should calculate resulting baud here and report it back */
803 if ((cflag & CBAUD) != B0)
804 tty_encode_baud_rate(tty, baud, baud);
805
806 dev_dbg(&port->dev,
807 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
808 __func__, baud, config->wBaudRate, config->wFlags,
809 config->bDataBits, config->bParity, config->bStopBits,
810 config->cXon, config->cXoff, config->bUartMode);
811
812 cpu_to_be16s(&config->wBaudRate);
813 cpu_to_be16s(&config->wFlags);
814
815 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
816 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
817 sizeof(*config));
818 if (status)
819 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
820 __func__, port_number, status);
821
822 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
823 mcr = tport->tp_shadow_mcr;
824 /* if baud rate is B0, clear RTS and DTR */
825 if ((cflag & CBAUD) == B0)
826 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
827 status = ti_set_mcr(tport, mcr);
828 if (status)
829 dev_err(&port->dev,
830 "%s - cannot set modem control on port %d, %d\n",
831 __func__, port_number, status);
832
833 kfree(config);
834}
835
836
837static int ti_tiocmget(struct tty_struct *tty)
838{
839 struct usb_serial_port *port = tty->driver_data;
840 struct ti_port *tport = usb_get_serial_port_data(port);
841 unsigned int result;
842 unsigned int msr;
843 unsigned int mcr;
844 unsigned long flags;
845
846 if (tport == NULL)
847 return -ENODEV;
848
849 spin_lock_irqsave(&tport->tp_lock, flags);
850 msr = tport->tp_msr;
851 mcr = tport->tp_shadow_mcr;
852 spin_unlock_irqrestore(&tport->tp_lock, flags);
853
854 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
855 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
856 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
857 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
858 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
859 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
860 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
861
862 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
863
864 return result;
865}
866
867
868static int ti_tiocmset(struct tty_struct *tty,
869 unsigned int set, unsigned int clear)
870{
871 struct usb_serial_port *port = tty->driver_data;
872 struct ti_port *tport = usb_get_serial_port_data(port);
873 unsigned int mcr;
874 unsigned long flags;
875
876 if (tport == NULL)
877 return -ENODEV;
878
879 spin_lock_irqsave(&tport->tp_lock, flags);
880 mcr = tport->tp_shadow_mcr;
881
882 if (set & TIOCM_RTS)
883 mcr |= TI_MCR_RTS;
884 if (set & TIOCM_DTR)
885 mcr |= TI_MCR_DTR;
886 if (set & TIOCM_LOOP)
887 mcr |= TI_MCR_LOOP;
888
889 if (clear & TIOCM_RTS)
890 mcr &= ~TI_MCR_RTS;
891 if (clear & TIOCM_DTR)
892 mcr &= ~TI_MCR_DTR;
893 if (clear & TIOCM_LOOP)
894 mcr &= ~TI_MCR_LOOP;
895 spin_unlock_irqrestore(&tport->tp_lock, flags);
896
897 return ti_set_mcr(tport, mcr);
898}
899
900
901static void ti_break(struct tty_struct *tty, int break_state)
902{
903 struct usb_serial_port *port = tty->driver_data;
904 struct ti_port *tport = usb_get_serial_port_data(port);
905 int status;
906
907 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
908
909 if (tport == NULL)
910 return;
911
912 status = ti_write_byte(port, tport->tp_tdev,
913 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
914 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
915
916 if (status)
917 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
918}
919
920
921static void ti_interrupt_callback(struct urb *urb)
922{
923 struct ti_device *tdev = urb->context;
924 struct usb_serial_port *port;
925 struct usb_serial *serial = tdev->td_serial;
926 struct ti_port *tport;
927 struct device *dev = &urb->dev->dev;
928 unsigned char *data = urb->transfer_buffer;
929 int length = urb->actual_length;
930 int port_number;
931 int function;
932 int status = urb->status;
933 int retval;
934 __u8 msr;
935
936 switch (status) {
937 case 0:
938 break;
939 case -ECONNRESET:
940 case -ENOENT:
941 case -ESHUTDOWN:
942 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
943 tdev->td_urb_error = 1;
944 return;
945 default:
946 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
947 tdev->td_urb_error = 1;
948 goto exit;
949 }
950
951 if (length != 2) {
952 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
953 goto exit;
954 }
955
956 if (data[0] == TI_CODE_HARDWARE_ERROR) {
957 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
958 goto exit;
959 }
960
961 port_number = TI_GET_PORT_FROM_CODE(data[0]);
962 function = TI_GET_FUNC_FROM_CODE(data[0]);
963
964 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
965 __func__, port_number, function, data[1]);
966
967 if (port_number >= serial->num_ports) {
968 dev_err(dev, "%s - bad port number, %d\n",
969 __func__, port_number);
970 goto exit;
971 }
972
973 port = serial->port[port_number];
974
975 tport = usb_get_serial_port_data(port);
976 if (!tport)
977 goto exit;
978
979 switch (function) {
980 case TI_CODE_DATA_ERROR:
981 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
982 __func__, port_number, data[1]);
983 break;
984
985 case TI_CODE_MODEM_STATUS:
986 msr = data[1];
987 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
988 ti_handle_new_msr(tport, msr);
989 break;
990
991 default:
992 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
993 __func__, data[1]);
994 break;
995 }
996
997exit:
998 retval = usb_submit_urb(urb, GFP_ATOMIC);
999 if (retval)
1000 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1001 __func__, retval);
1002}
1003
1004
1005static void ti_bulk_in_callback(struct urb *urb)
1006{
1007 struct ti_port *tport = urb->context;
1008 struct usb_serial_port *port = tport->tp_port;
1009 struct device *dev = &urb->dev->dev;
1010 int status = urb->status;
1011 int retval = 0;
1012
1013 switch (status) {
1014 case 0:
1015 break;
1016 case -ECONNRESET:
1017 case -ENOENT:
1018 case -ESHUTDOWN:
1019 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1020 tport->tp_tdev->td_urb_error = 1;
1021 return;
1022 default:
1023 dev_err(dev, "%s - nonzero urb status, %d\n",
1024 __func__, status);
1025 tport->tp_tdev->td_urb_error = 1;
1026 }
1027
1028 if (status == -EPIPE)
1029 goto exit;
1030
1031 if (status) {
1032 dev_err(dev, "%s - stopping read!\n", __func__);
1033 return;
1034 }
1035
1036 if (urb->actual_length) {
1037 usb_serial_debug_data(dev, __func__, urb->actual_length,
1038 urb->transfer_buffer);
1039
1040 if (!tport->tp_is_open)
1041 dev_dbg(dev, "%s - port closed, dropping data\n",
1042 __func__);
1043 else
1044 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1045 spin_lock(&tport->tp_lock);
1046 port->icount.rx += urb->actual_length;
1047 spin_unlock(&tport->tp_lock);
1048 }
1049
1050exit:
1051 /* continue to read unless stopping */
1052 spin_lock(&tport->tp_lock);
1053 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1054 retval = usb_submit_urb(urb, GFP_ATOMIC);
1055 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1056 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1057
1058 spin_unlock(&tport->tp_lock);
1059 if (retval)
1060 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1061 __func__, retval);
1062}
1063
1064
1065static void ti_bulk_out_callback(struct urb *urb)
1066{
1067 struct ti_port *tport = urb->context;
1068 struct usb_serial_port *port = tport->tp_port;
1069 int status = urb->status;
1070
1071 tport->tp_write_urb_in_use = 0;
1072
1073 switch (status) {
1074 case 0:
1075 break;
1076 case -ECONNRESET:
1077 case -ENOENT:
1078 case -ESHUTDOWN:
1079 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1080 tport->tp_tdev->td_urb_error = 1;
1081 return;
1082 default:
1083 dev_err_console(port, "%s - nonzero urb status, %d\n",
1084 __func__, status);
1085 tport->tp_tdev->td_urb_error = 1;
1086 }
1087
1088 /* send any buffered data */
1089 ti_send(tport);
1090}
1091
1092
1093static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1094 int length)
1095{
1096 int cnt;
1097
1098 do {
1099 cnt = tty_insert_flip_string(&port->port, data, length);
1100 if (cnt < length) {
1101 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1102 __func__, length - cnt);
1103 if (cnt == 0)
1104 break;
1105 }
1106 tty_flip_buffer_push(&port->port);
1107 data += cnt;
1108 length -= cnt;
1109 } while (length > 0);
1110}
1111
1112
1113static void ti_send(struct ti_port *tport)
1114{
1115 int count, result;
1116 struct usb_serial_port *port = tport->tp_port;
1117 unsigned long flags;
1118
1119 spin_lock_irqsave(&tport->tp_lock, flags);
1120
1121 if (tport->tp_write_urb_in_use)
1122 goto unlock;
1123
1124 count = kfifo_out(&port->write_fifo,
1125 port->write_urb->transfer_buffer,
1126 port->bulk_out_size);
1127
1128 if (count == 0)
1129 goto unlock;
1130
1131 tport->tp_write_urb_in_use = 1;
1132
1133 spin_unlock_irqrestore(&tport->tp_lock, flags);
1134
1135 usb_serial_debug_data(&port->dev, __func__, count,
1136 port->write_urb->transfer_buffer);
1137
1138 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1139 usb_sndbulkpipe(port->serial->dev,
1140 port->bulk_out_endpointAddress),
1141 port->write_urb->transfer_buffer, count,
1142 ti_bulk_out_callback, tport);
1143
1144 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1145 if (result) {
1146 dev_err_console(port, "%s - submit write urb failed, %d\n",
1147 __func__, result);
1148 tport->tp_write_urb_in_use = 0;
1149 /* TODO: reschedule ti_send */
1150 } else {
1151 spin_lock_irqsave(&tport->tp_lock, flags);
1152 port->icount.tx += count;
1153 spin_unlock_irqrestore(&tport->tp_lock, flags);
1154 }
1155
1156 /* more room in the buffer for new writes, wakeup */
1157 tty_port_tty_wakeup(&port->port);
1158
1159 return;
1160unlock:
1161 spin_unlock_irqrestore(&tport->tp_lock, flags);
1162 return;
1163}
1164
1165
1166static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1167{
1168 unsigned long flags;
1169 int status;
1170
1171 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1172 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1173 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1174
1175 spin_lock_irqsave(&tport->tp_lock, flags);
1176 if (!status)
1177 tport->tp_shadow_mcr = mcr;
1178 spin_unlock_irqrestore(&tport->tp_lock, flags);
1179
1180 return status;
1181}
1182
1183
1184static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1185{
1186 int size, status;
1187 struct ti_device *tdev = tport->tp_tdev;
1188 struct usb_serial_port *port = tport->tp_port;
1189 int port_number = port->port_number;
1190 struct ti_port_status *data;
1191
1192 size = sizeof(struct ti_port_status);
1193 data = kmalloc(size, GFP_KERNEL);
1194 if (!data)
1195 return -ENOMEM;
1196
1197 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1198 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1199 if (status) {
1200 dev_err(&port->dev,
1201 "%s - get port status command failed, %d\n",
1202 __func__, status);
1203 goto free_data;
1204 }
1205
1206 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1207
1208 *lsr = data->bLSR;
1209
1210free_data:
1211 kfree(data);
1212 return status;
1213}
1214
1215
1216static int ti_get_serial_info(struct ti_port *tport,
1217 struct serial_struct __user *ret_arg)
1218{
1219 struct usb_serial_port *port = tport->tp_port;
1220 struct serial_struct ret_serial;
1221 unsigned cwait;
1222
1223 if (!ret_arg)
1224 return -EFAULT;
1225
1226 cwait = port->port.closing_wait;
1227 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1228 cwait = jiffies_to_msecs(cwait) / 10;
1229
1230 memset(&ret_serial, 0, sizeof(ret_serial));
1231
1232 ret_serial.type = PORT_16550A;
1233 ret_serial.line = port->minor;
1234 ret_serial.port = port->port_number;
1235 ret_serial.flags = tport->tp_flags;
1236 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1237 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1238 ret_serial.closing_wait = cwait;
1239
1240 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1241 return -EFAULT;
1242
1243 return 0;
1244}
1245
1246
1247static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1248 struct serial_struct __user *new_arg)
1249{
1250 struct serial_struct new_serial;
1251 unsigned cwait;
1252
1253 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1254 return -EFAULT;
1255
1256 cwait = new_serial.closing_wait;
1257 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1258 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1259
1260 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1261 tport->tp_port->port.closing_wait = cwait;
1262
1263 return 0;
1264}
1265
1266
1267static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1268{
1269 struct async_icount *icount;
1270 struct tty_struct *tty;
1271 unsigned long flags;
1272
1273 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1274
1275 if (msr & TI_MSR_DELTA_MASK) {
1276 spin_lock_irqsave(&tport->tp_lock, flags);
1277 icount = &tport->tp_port->icount;
1278 if (msr & TI_MSR_DELTA_CTS)
1279 icount->cts++;
1280 if (msr & TI_MSR_DELTA_DSR)
1281 icount->dsr++;
1282 if (msr & TI_MSR_DELTA_CD)
1283 icount->dcd++;
1284 if (msr & TI_MSR_DELTA_RI)
1285 icount->rng++;
1286 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1287 spin_unlock_irqrestore(&tport->tp_lock, flags);
1288 }
1289
1290 tport->tp_msr = msr & TI_MSR_MASK;
1291
1292 /* handle CTS flow control */
1293 tty = tty_port_tty_get(&tport->tp_port->port);
1294 if (tty && C_CRTSCTS(tty)) {
1295 if (msr & TI_MSR_CTS)
1296 tty_wakeup(tty);
1297 }
1298 tty_kref_put(tty);
1299}
1300
1301
1302static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1303{
1304 unsigned long flags;
1305
1306 spin_lock_irqsave(&tport->tp_lock, flags);
1307
1308 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1309 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1310
1311 spin_unlock_irqrestore(&tport->tp_lock, flags);
1312}
1313
1314
1315static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1316{
1317 struct urb *urb;
1318 int status = 0;
1319 unsigned long flags;
1320
1321 spin_lock_irqsave(&tport->tp_lock, flags);
1322
1323 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1324 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1325 urb = tport->tp_port->read_urb;
1326 spin_unlock_irqrestore(&tport->tp_lock, flags);
1327 urb->context = tport;
1328 status = usb_submit_urb(urb, GFP_KERNEL);
1329 } else {
1330 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1331 spin_unlock_irqrestore(&tport->tp_lock, flags);
1332 }
1333
1334 return status;
1335}
1336
1337
1338static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1339 __u16 moduleid, __u16 value, __u8 *data, int size)
1340{
1341 int status;
1342
1343 status = usb_control_msg(tdev->td_serial->dev,
1344 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1345 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1346 value, moduleid, data, size, 1000);
1347
1348 if (status == size)
1349 status = 0;
1350
1351 if (status > 0)
1352 status = -ECOMM;
1353
1354 return status;
1355}
1356
1357
1358static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1359 __u16 moduleid, __u16 value, __u8 *data, int size)
1360{
1361 int status;
1362
1363 status = usb_control_msg(tdev->td_serial->dev,
1364 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1365 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1366 value, moduleid, data, size, 1000);
1367
1368 if (status == size)
1369 status = 0;
1370
1371 if (status > 0)
1372 status = -ECOMM;
1373
1374 return status;
1375}
1376
1377
1378static int ti_write_byte(struct usb_serial_port *port,
1379 struct ti_device *tdev, unsigned long addr,
1380 __u8 mask, __u8 byte)
1381{
1382 int status;
1383 unsigned int size;
1384 struct ti_write_data_bytes *data;
1385
1386 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1387 addr, mask, byte);
1388
1389 size = sizeof(struct ti_write_data_bytes) + 2;
1390 data = kmalloc(size, GFP_KERNEL);
1391 if (!data)
1392 return -ENOMEM;
1393
1394 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1395 data->bDataType = TI_RW_DATA_BYTE;
1396 data->bDataCounter = 1;
1397 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1398 data->wBaseAddrLo = cpu_to_be16(addr);
1399 data->bData[0] = mask;
1400 data->bData[1] = byte;
1401
1402 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1403 (__u8 *)data, size);
1404
1405 if (status < 0)
1406 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1407
1408 kfree(data);
1409
1410 return status;
1411}
1412
1413static int ti_do_download(struct usb_device *dev, int pipe,
1414 u8 *buffer, int size)
1415{
1416 int pos;
1417 u8 cs = 0;
1418 int done;
1419 struct ti_firmware_header *header;
1420 int status = 0;
1421 int len;
1422
1423 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1424 cs = (__u8)(cs + buffer[pos]);
1425
1426 header = (struct ti_firmware_header *)buffer;
1427 header->wLength = cpu_to_le16((__u16)(size
1428 - sizeof(struct ti_firmware_header)));
1429 header->bCheckSum = cs;
1430
1431 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1432 for (pos = 0; pos < size; pos += done) {
1433 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1434 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1435 &done, 1000);
1436 if (status)
1437 break;
1438 }
1439 return status;
1440}
1441
1442static int ti_download_firmware(struct ti_device *tdev)
1443{
1444 int status;
1445 int buffer_size;
1446 __u8 *buffer;
1447 struct usb_device *dev = tdev->td_serial->dev;
1448 unsigned int pipe = usb_sndbulkpipe(dev,
1449 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1450 const struct firmware *fw_p;
1451 char buf[32];
1452
1453 /* try ID specific firmware first, then try generic firmware */
1454 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1455 le16_to_cpu(dev->descriptor.idVendor),
1456 le16_to_cpu(dev->descriptor.idProduct));
1457 status = request_firmware(&fw_p, buf, &dev->dev);
1458
1459 if (status != 0) {
1460 buf[0] = '\0';
1461 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1462 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1463 case MTS_CDMA_PRODUCT_ID:
1464 strcpy(buf, "mts_cdma.fw");
1465 break;
1466 case MTS_GSM_PRODUCT_ID:
1467 strcpy(buf, "mts_gsm.fw");
1468 break;
1469 case MTS_EDGE_PRODUCT_ID:
1470 strcpy(buf, "mts_edge.fw");
1471 break;
1472 case MTS_MT9234MU_PRODUCT_ID:
1473 strcpy(buf, "mts_mt9234mu.fw");
1474 break;
1475 case MTS_MT9234ZBA_PRODUCT_ID:
1476 strcpy(buf, "mts_mt9234zba.fw");
1477 break;
1478 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1479 strcpy(buf, "mts_mt9234zba.fw");
1480 break; }
1481 }
1482 if (buf[0] == '\0') {
1483 if (tdev->td_is_3410)
1484 strcpy(buf, "ti_3410.fw");
1485 else
1486 strcpy(buf, "ti_5052.fw");
1487 }
1488 status = request_firmware(&fw_p, buf, &dev->dev);
1489 }
1490 if (status) {
1491 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1492 return -ENOENT;
1493 }
1494 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1495 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1496 release_firmware(fw_p);
1497 return -ENOENT;
1498 }
1499
1500 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1501 buffer = kmalloc(buffer_size, GFP_KERNEL);
1502 if (buffer) {
1503 memcpy(buffer, fw_p->data, fw_p->size);
1504 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1505 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1506 kfree(buffer);
1507 } else {
1508 status = -ENOMEM;
1509 }
1510 release_firmware(fw_p);
1511 if (status) {
1512 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1513 __func__, status);
1514 return status;
1515 }
1516
1517 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1518
1519 return 0;
1520}
1/* vi: ts=8 sw=8
2 *
3 * TI 3410/5052 USB Serial Driver
4 *
5 * Copyright (C) 2004 Texas Instruments
6 *
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
10 *
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.
15 *
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>.
19 */
20
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>
38
39#include "ti_usb_3410_5052.h"
40
41/* Defines */
42
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"
46
47#define TI_FIRMWARE_BUF_SIZE 16284
48
49#define TI_WRITE_BUF_SIZE 1024
50
51#define TI_TRANSFER_TIMEOUT 2
52
53#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
54
55/* supported setserial flags */
56#define TI_SET_SERIAL_FLAGS 0
57
58/* read urb states */
59#define TI_READ_URB_RUNNING 0
60#define TI_READ_URB_STOPPING 1
61#define TI_READ_URB_STOPPED 2
62
63#define TI_EXTRA_VID_PID_COUNT 5
64
65
66/* Structures */
67
68struct ti_port {
69 int tp_is_open;
70 __u8 tp_msr;
71 __u8 tp_lsr;
72 __u8 tp_shadow_mcr;
73 __u8 tp_uart_mode; /* 232 or 485 modes */
74 unsigned int tp_uart_base_addr;
75 int tp_flags;
76 int tp_closing_wait;/* in .01 secs */
77 struct async_icount tp_icount;
78 wait_queue_head_t tp_msr_wait; /* wait for msr change */
79 wait_queue_head_t tp_write_wait;
80 struct ti_device *tp_tdev;
81 struct usb_serial_port *tp_port;
82 spinlock_t tp_lock;
83 int tp_read_urb_state;
84 int tp_write_urb_in_use;
85 struct kfifo write_fifo;
86};
87
88struct ti_device {
89 struct mutex td_open_close_lock;
90 int td_open_port_count;
91 struct usb_serial *td_serial;
92 int td_is_3410;
93 int td_urb_error;
94};
95
96
97/* Function Declarations */
98
99static int ti_startup(struct usb_serial *serial);
100static void ti_release(struct usb_serial *serial);
101static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
102static void ti_close(struct usb_serial_port *port);
103static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
104 const unsigned char *data, int count);
105static int ti_write_room(struct tty_struct *tty);
106static int ti_chars_in_buffer(struct tty_struct *tty);
107static void ti_throttle(struct tty_struct *tty);
108static void ti_unthrottle(struct tty_struct *tty);
109static int ti_ioctl(struct tty_struct *tty,
110 unsigned int cmd, unsigned long arg);
111static int ti_get_icount(struct tty_struct *tty,
112 struct serial_icounter_struct *icount);
113static void ti_set_termios(struct tty_struct *tty,
114 struct usb_serial_port *port, struct ktermios *old_termios);
115static int ti_tiocmget(struct tty_struct *tty);
116static int ti_tiocmset(struct tty_struct *tty,
117 unsigned int set, unsigned int clear);
118static void ti_break(struct tty_struct *tty, int break_state);
119static void ti_interrupt_callback(struct urb *urb);
120static void ti_bulk_in_callback(struct urb *urb);
121static void ti_bulk_out_callback(struct urb *urb);
122
123static void ti_recv(struct device *dev, struct tty_struct *tty,
124 unsigned char *data, int length);
125static void ti_send(struct ti_port *tport);
126static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
127static int ti_get_lsr(struct ti_port *tport);
128static int ti_get_serial_info(struct ti_port *tport,
129 struct serial_struct __user *ret_arg);
130static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
131 struct serial_struct __user *new_arg);
132static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
133
134static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
135
136static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
137static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
138
139static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
140 __u16 moduleid, __u16 value, __u8 *data, int size);
141static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
142 __u16 moduleid, __u16 value, __u8 *data, int size);
143
144static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
145 __u8 mask, __u8 byte);
146
147static int ti_download_firmware(struct ti_device *tdev);
148
149
150/* Data */
151
152/* module parameters */
153static int debug;
154static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
155static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
156static unsigned int vendor_3410_count;
157static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
158static unsigned int product_3410_count;
159static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
160static unsigned int vendor_5052_count;
161static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
162static unsigned int product_5052_count;
163
164/* supported devices */
165/* the array dimension is the number of default entries plus */
166/* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
167/* null entry */
168static struct usb_device_id ti_id_table_3410[13+TI_EXTRA_VID_PID_COUNT+1] = {
169 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
170 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
171 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
172 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
173 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
174 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
175 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
176 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
177 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
178 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
179 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
180 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
181 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
182};
183
184static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
185 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
186 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
187 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
188 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
189};
190
191static struct usb_device_id ti_id_table_combined[17+2*TI_EXTRA_VID_PID_COUNT+1] = {
192 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
193 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
194 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
195 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
196 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
197 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
198 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
200 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
201 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
202 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
203 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
205 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
206 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
207 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
208 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
209 { }
210};
211
212static struct usb_driver ti_usb_driver = {
213 .name = "ti_usb_3410_5052",
214 .probe = usb_serial_probe,
215 .disconnect = usb_serial_disconnect,
216 .id_table = ti_id_table_combined,
217 .no_dynamic_id = 1,
218};
219
220static struct usb_serial_driver ti_1port_device = {
221 .driver = {
222 .owner = THIS_MODULE,
223 .name = "ti_usb_3410_5052_1",
224 },
225 .description = "TI USB 3410 1 port adapter",
226 .usb_driver = &ti_usb_driver,
227 .id_table = ti_id_table_3410,
228 .num_ports = 1,
229 .attach = ti_startup,
230 .release = ti_release,
231 .open = ti_open,
232 .close = ti_close,
233 .write = ti_write,
234 .write_room = ti_write_room,
235 .chars_in_buffer = ti_chars_in_buffer,
236 .throttle = ti_throttle,
237 .unthrottle = ti_unthrottle,
238 .ioctl = ti_ioctl,
239 .set_termios = ti_set_termios,
240 .tiocmget = ti_tiocmget,
241 .tiocmset = ti_tiocmset,
242 .get_icount = ti_get_icount,
243 .break_ctl = ti_break,
244 .read_int_callback = ti_interrupt_callback,
245 .read_bulk_callback = ti_bulk_in_callback,
246 .write_bulk_callback = ti_bulk_out_callback,
247};
248
249static struct usb_serial_driver ti_2port_device = {
250 .driver = {
251 .owner = THIS_MODULE,
252 .name = "ti_usb_3410_5052_2",
253 },
254 .description = "TI USB 5052 2 port adapter",
255 .usb_driver = &ti_usb_driver,
256 .id_table = ti_id_table_5052,
257 .num_ports = 2,
258 .attach = ti_startup,
259 .release = ti_release,
260 .open = ti_open,
261 .close = ti_close,
262 .write = ti_write,
263 .write_room = ti_write_room,
264 .chars_in_buffer = ti_chars_in_buffer,
265 .throttle = ti_throttle,
266 .unthrottle = ti_unthrottle,
267 .ioctl = ti_ioctl,
268 .set_termios = ti_set_termios,
269 .tiocmget = ti_tiocmget,
270 .tiocmset = ti_tiocmset,
271 .get_icount = ti_get_icount,
272 .break_ctl = ti_break,
273 .read_int_callback = ti_interrupt_callback,
274 .read_bulk_callback = ti_bulk_in_callback,
275 .write_bulk_callback = ti_bulk_out_callback,
276};
277
278
279/* Module */
280
281MODULE_AUTHOR(TI_DRIVER_AUTHOR);
282MODULE_DESCRIPTION(TI_DRIVER_DESC);
283MODULE_VERSION(TI_DRIVER_VERSION);
284MODULE_LICENSE("GPL");
285
286MODULE_FIRMWARE("ti_3410.fw");
287MODULE_FIRMWARE("ti_5052.fw");
288MODULE_FIRMWARE("mts_cdma.fw");
289MODULE_FIRMWARE("mts_gsm.fw");
290MODULE_FIRMWARE("mts_edge.fw");
291MODULE_FIRMWARE("mts_mt9234mu.fw");
292MODULE_FIRMWARE("mts_mt9234zba.fw");
293
294module_param(debug, bool, S_IRUGO | S_IWUSR);
295MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
296
297module_param(closing_wait, int, S_IRUGO | S_IWUSR);
298MODULE_PARM_DESC(closing_wait,
299 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
300
301module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
302MODULE_PARM_DESC(vendor_3410,
303 "Vendor ids for 3410 based devices, 1-5 short integers");
304module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
305MODULE_PARM_DESC(product_3410,
306 "Product ids for 3410 based devices, 1-5 short integers");
307module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
308MODULE_PARM_DESC(vendor_5052,
309 "Vendor ids for 5052 based devices, 1-5 short integers");
310module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
311MODULE_PARM_DESC(product_5052,
312 "Product ids for 5052 based devices, 1-5 short integers");
313
314MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
315
316
317/* Functions */
318
319static int __init ti_init(void)
320{
321 int i, j, c;
322 int ret;
323
324 /* insert extra vendor and product ids */
325 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
326 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
327 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
328 ti_id_table_3410[j].idVendor = vendor_3410[i];
329 ti_id_table_3410[j].idProduct = product_3410[i];
330 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
331 ti_id_table_combined[c].idVendor = vendor_3410[i];
332 ti_id_table_combined[c].idProduct = product_3410[i];
333 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
334 }
335 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
336 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
337 ti_id_table_5052[j].idVendor = vendor_5052[i];
338 ti_id_table_5052[j].idProduct = product_5052[i];
339 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
340 ti_id_table_combined[c].idVendor = vendor_5052[i];
341 ti_id_table_combined[c].idProduct = product_5052[i];
342 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
343 }
344
345 ret = usb_serial_register(&ti_1port_device);
346 if (ret)
347 goto failed_1port;
348 ret = usb_serial_register(&ti_2port_device);
349 if (ret)
350 goto failed_2port;
351
352 ret = usb_register(&ti_usb_driver);
353 if (ret)
354 goto failed_usb;
355
356 printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":"
357 TI_DRIVER_DESC "\n");
358
359 return 0;
360
361failed_usb:
362 usb_serial_deregister(&ti_2port_device);
363failed_2port:
364 usb_serial_deregister(&ti_1port_device);
365failed_1port:
366 return ret;
367}
368
369
370static void __exit ti_exit(void)
371{
372 usb_deregister(&ti_usb_driver);
373 usb_serial_deregister(&ti_1port_device);
374 usb_serial_deregister(&ti_2port_device);
375}
376
377
378module_init(ti_init);
379module_exit(ti_exit);
380
381
382static int ti_startup(struct usb_serial *serial)
383{
384 struct ti_device *tdev;
385 struct ti_port *tport;
386 struct usb_device *dev = serial->dev;
387 int status;
388 int i;
389
390
391 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
392 __func__, le16_to_cpu(dev->descriptor.idProduct),
393 dev->descriptor.bNumConfigurations,
394 dev->actconfig->desc.bConfigurationValue);
395
396 /* create device structure */
397 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
398 if (tdev == NULL) {
399 dev_err(&dev->dev, "%s - out of memory\n", __func__);
400 return -ENOMEM;
401 }
402 mutex_init(&tdev->td_open_close_lock);
403 tdev->td_serial = serial;
404 usb_set_serial_data(serial, tdev);
405
406 /* determine device type */
407 if (usb_match_id(serial->interface, ti_id_table_3410))
408 tdev->td_is_3410 = 1;
409 dbg("%s - device type is %s", __func__,
410 tdev->td_is_3410 ? "3410" : "5052");
411
412 /* if we have only 1 configuration, download firmware */
413 if (dev->descriptor.bNumConfigurations == 1) {
414 if ((status = ti_download_firmware(tdev)) != 0)
415 goto free_tdev;
416
417 /* 3410 must be reset, 5052 resets itself */
418 if (tdev->td_is_3410) {
419 msleep_interruptible(100);
420 usb_reset_device(dev);
421 }
422
423 status = -ENODEV;
424 goto free_tdev;
425 }
426
427 /* the second configuration must be set */
428 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
429 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
430 status = status ? status : -ENODEV;
431 goto free_tdev;
432 }
433
434 /* set up port structures */
435 for (i = 0; i < serial->num_ports; ++i) {
436 tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL);
437 if (tport == NULL) {
438 dev_err(&dev->dev, "%s - out of memory\n", __func__);
439 status = -ENOMEM;
440 goto free_tports;
441 }
442 spin_lock_init(&tport->tp_lock);
443 tport->tp_uart_base_addr = (i == 0 ?
444 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
445 tport->tp_closing_wait = closing_wait;
446 init_waitqueue_head(&tport->tp_msr_wait);
447 init_waitqueue_head(&tport->tp_write_wait);
448 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE,
449 GFP_KERNEL)) {
450 dev_err(&dev->dev, "%s - out of memory\n", __func__);
451 kfree(tport);
452 status = -ENOMEM;
453 goto free_tports;
454 }
455 tport->tp_port = serial->port[i];
456 tport->tp_tdev = tdev;
457 usb_set_serial_port_data(serial->port[i], tport);
458 tport->tp_uart_mode = 0; /* default is RS232 */
459 }
460
461 return 0;
462
463free_tports:
464 for (--i; i >= 0; --i) {
465 tport = usb_get_serial_port_data(serial->port[i]);
466 kfifo_free(&tport->write_fifo);
467 kfree(tport);
468 usb_set_serial_port_data(serial->port[i], NULL);
469 }
470free_tdev:
471 kfree(tdev);
472 usb_set_serial_data(serial, NULL);
473 return status;
474}
475
476
477static void ti_release(struct usb_serial *serial)
478{
479 int i;
480 struct ti_device *tdev = usb_get_serial_data(serial);
481 struct ti_port *tport;
482
483 dbg("%s", __func__);
484
485 for (i = 0; i < serial->num_ports; ++i) {
486 tport = usb_get_serial_port_data(serial->port[i]);
487 if (tport) {
488 kfifo_free(&tport->write_fifo);
489 kfree(tport);
490 }
491 }
492
493 kfree(tdev);
494}
495
496
497static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
498{
499 struct ti_port *tport = usb_get_serial_port_data(port);
500 struct ti_device *tdev;
501 struct usb_device *dev;
502 struct urb *urb;
503 int port_number;
504 int status;
505 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
506 TI_PIPE_TIMEOUT_ENABLE |
507 (TI_TRANSFER_TIMEOUT << 2));
508
509 dbg("%s - port %d", __func__, port->number);
510
511 if (tport == NULL)
512 return -ENODEV;
513
514 dev = port->serial->dev;
515 tdev = tport->tp_tdev;
516
517 /* only one open on any port on a device at a time */
518 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
519 return -ERESTARTSYS;
520
521 port_number = port->number - port->serial->minor;
522
523 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
524
525 tport->tp_msr = 0;
526 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
527
528 /* start interrupt urb the first time a port is opened on this device */
529 if (tdev->td_open_port_count == 0) {
530 dbg("%s - start interrupt in urb", __func__);
531 urb = tdev->td_serial->port[0]->interrupt_in_urb;
532 if (!urb) {
533 dev_err(&port->dev, "%s - no interrupt urb\n",
534 __func__);
535 status = -EINVAL;
536 goto release_lock;
537 }
538 urb->complete = ti_interrupt_callback;
539 urb->context = tdev;
540 urb->dev = dev;
541 status = usb_submit_urb(urb, GFP_KERNEL);
542 if (status) {
543 dev_err(&port->dev,
544 "%s - submit interrupt urb failed, %d\n",
545 __func__, status);
546 goto release_lock;
547 }
548 }
549
550 if (tty)
551 ti_set_termios(tty, port, tty->termios);
552
553 dbg("%s - sending TI_OPEN_PORT", __func__);
554 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
555 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
556 if (status) {
557 dev_err(&port->dev, "%s - cannot send open command, %d\n",
558 __func__, status);
559 goto unlink_int_urb;
560 }
561
562 dbg("%s - sending TI_START_PORT", __func__);
563 status = ti_command_out_sync(tdev, TI_START_PORT,
564 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
565 if (status) {
566 dev_err(&port->dev, "%s - cannot send start command, %d\n",
567 __func__, status);
568 goto unlink_int_urb;
569 }
570
571 dbg("%s - sending TI_PURGE_PORT", __func__);
572 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
573 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
574 if (status) {
575 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
576 __func__, status);
577 goto unlink_int_urb;
578 }
579 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
580 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
581 if (status) {
582 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
583 __func__, status);
584 goto unlink_int_urb;
585 }
586
587 /* reset the data toggle on the bulk endpoints to work around bug in
588 * host controllers where things get out of sync some times */
589 usb_clear_halt(dev, port->write_urb->pipe);
590 usb_clear_halt(dev, port->read_urb->pipe);
591
592 if (tty)
593 ti_set_termios(tty, port, tty->termios);
594
595 dbg("%s - sending TI_OPEN_PORT (2)", __func__);
596 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
597 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
598 if (status) {
599 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
600 __func__, status);
601 goto unlink_int_urb;
602 }
603
604 dbg("%s - sending TI_START_PORT (2)", __func__);
605 status = ti_command_out_sync(tdev, TI_START_PORT,
606 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
607 if (status) {
608 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
609 __func__, status);
610 goto unlink_int_urb;
611 }
612
613 /* start read urb */
614 dbg("%s - start read urb", __func__);
615 urb = port->read_urb;
616 if (!urb) {
617 dev_err(&port->dev, "%s - no read urb\n", __func__);
618 status = -EINVAL;
619 goto unlink_int_urb;
620 }
621 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
622 urb->complete = ti_bulk_in_callback;
623 urb->context = tport;
624 urb->dev = dev;
625 status = usb_submit_urb(urb, GFP_KERNEL);
626 if (status) {
627 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
628 __func__, status);
629 goto unlink_int_urb;
630 }
631
632 tport->tp_is_open = 1;
633 ++tdev->td_open_port_count;
634
635 goto release_lock;
636
637unlink_int_urb:
638 if (tdev->td_open_port_count == 0)
639 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
640release_lock:
641 mutex_unlock(&tdev->td_open_close_lock);
642 dbg("%s - exit %d", __func__, status);
643 return status;
644}
645
646
647static void ti_close(struct usb_serial_port *port)
648{
649 struct ti_device *tdev;
650 struct ti_port *tport;
651 int port_number;
652 int status;
653 int do_unlock;
654
655 dbg("%s - port %d", __func__, port->number);
656
657 tdev = usb_get_serial_data(port->serial);
658 tport = usb_get_serial_port_data(port);
659 if (tdev == NULL || tport == NULL)
660 return;
661
662 tport->tp_is_open = 0;
663
664 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
665
666 usb_kill_urb(port->read_urb);
667 usb_kill_urb(port->write_urb);
668 tport->tp_write_urb_in_use = 0;
669
670 port_number = port->number - port->serial->minor;
671
672 dbg("%s - sending TI_CLOSE_PORT", __func__);
673 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
674 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
675 if (status)
676 dev_err(&port->dev,
677 "%s - cannot send close port command, %d\n"
678 , __func__, status);
679
680 /* if mutex_lock is interrupted, continue anyway */
681 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
682 --tport->tp_tdev->td_open_port_count;
683 if (tport->tp_tdev->td_open_port_count <= 0) {
684 /* last port is closed, shut down interrupt urb */
685 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
686 tport->tp_tdev->td_open_port_count = 0;
687 }
688 if (do_unlock)
689 mutex_unlock(&tdev->td_open_close_lock);
690
691 dbg("%s - exit", __func__);
692}
693
694
695static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
696 const unsigned char *data, int count)
697{
698 struct ti_port *tport = usb_get_serial_port_data(port);
699
700 dbg("%s - port %d", __func__, port->number);
701
702 if (count == 0) {
703 dbg("%s - write request of 0 bytes", __func__);
704 return 0;
705 }
706
707 if (tport == NULL || !tport->tp_is_open)
708 return -ENODEV;
709
710 count = kfifo_in_locked(&tport->write_fifo, data, count,
711 &tport->tp_lock);
712 ti_send(tport);
713
714 return count;
715}
716
717
718static int ti_write_room(struct tty_struct *tty)
719{
720 struct usb_serial_port *port = tty->driver_data;
721 struct ti_port *tport = usb_get_serial_port_data(port);
722 int room = 0;
723 unsigned long flags;
724
725 dbg("%s - port %d", __func__, port->number);
726
727 if (tport == NULL)
728 return 0;
729
730 spin_lock_irqsave(&tport->tp_lock, flags);
731 room = kfifo_avail(&tport->write_fifo);
732 spin_unlock_irqrestore(&tport->tp_lock, flags);
733
734 dbg("%s - returns %d", __func__, room);
735 return room;
736}
737
738
739static int ti_chars_in_buffer(struct tty_struct *tty)
740{
741 struct usb_serial_port *port = tty->driver_data;
742 struct ti_port *tport = usb_get_serial_port_data(port);
743 int chars = 0;
744 unsigned long flags;
745
746 dbg("%s - port %d", __func__, port->number);
747
748 if (tport == NULL)
749 return 0;
750
751 spin_lock_irqsave(&tport->tp_lock, flags);
752 chars = kfifo_len(&tport->write_fifo);
753 spin_unlock_irqrestore(&tport->tp_lock, flags);
754
755 dbg("%s - returns %d", __func__, chars);
756 return chars;
757}
758
759
760static void ti_throttle(struct tty_struct *tty)
761{
762 struct usb_serial_port *port = tty->driver_data;
763 struct ti_port *tport = usb_get_serial_port_data(port);
764
765 dbg("%s - port %d", __func__, port->number);
766
767 if (tport == NULL)
768 return;
769
770 if (I_IXOFF(tty) || C_CRTSCTS(tty))
771 ti_stop_read(tport, tty);
772
773}
774
775
776static void ti_unthrottle(struct tty_struct *tty)
777{
778 struct usb_serial_port *port = tty->driver_data;
779 struct ti_port *tport = usb_get_serial_port_data(port);
780 int status;
781
782 dbg("%s - port %d", __func__, port->number);
783
784 if (tport == NULL)
785 return;
786
787 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
788 status = ti_restart_read(tport, tty);
789 if (status)
790 dev_err(&port->dev, "%s - cannot restart read, %d\n",
791 __func__, status);
792 }
793}
794
795static int ti_get_icount(struct tty_struct *tty,
796 struct serial_icounter_struct *icount)
797{
798 struct usb_serial_port *port = tty->driver_data;
799 struct ti_port *tport = usb_get_serial_port_data(port);
800 struct async_icount cnow = tport->tp_icount;
801
802 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
803 __func__, port->number,
804 cnow.rx, cnow.tx);
805
806 icount->cts = cnow.cts;
807 icount->dsr = cnow.dsr;
808 icount->rng = cnow.rng;
809 icount->dcd = cnow.dcd;
810 icount->rx = cnow.rx;
811 icount->tx = cnow.tx;
812 icount->frame = cnow.frame;
813 icount->overrun = cnow.overrun;
814 icount->parity = cnow.parity;
815 icount->brk = cnow.brk;
816 icount->buf_overrun = cnow.buf_overrun;
817
818 return 0;
819}
820
821static int ti_ioctl(struct tty_struct *tty,
822 unsigned int cmd, unsigned long arg)
823{
824 struct usb_serial_port *port = tty->driver_data;
825 struct ti_port *tport = usb_get_serial_port_data(port);
826 struct async_icount cnow;
827 struct async_icount cprev;
828
829 dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
830
831 if (tport == NULL)
832 return -ENODEV;
833
834 switch (cmd) {
835 case TIOCGSERIAL:
836 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
837 return ti_get_serial_info(tport,
838 (struct serial_struct __user *)arg);
839 case TIOCSSERIAL:
840 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
841 return ti_set_serial_info(tty, tport,
842 (struct serial_struct __user *)arg);
843 case TIOCMIWAIT:
844 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
845 cprev = tport->tp_icount;
846 while (1) {
847 interruptible_sleep_on(&tport->tp_msr_wait);
848 if (signal_pending(current))
849 return -ERESTARTSYS;
850 cnow = tport->tp_icount;
851 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
852 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
853 return -EIO; /* no change => error */
854 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
855 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
856 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
857 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
858 return 0;
859 cprev = cnow;
860 }
861 break;
862 }
863 return -ENOIOCTLCMD;
864}
865
866
867static void ti_set_termios(struct tty_struct *tty,
868 struct usb_serial_port *port, struct ktermios *old_termios)
869{
870 struct ti_port *tport = usb_get_serial_port_data(port);
871 struct ti_uart_config *config;
872 tcflag_t cflag, iflag;
873 int baud;
874 int status;
875 int port_number = port->number - port->serial->minor;
876 unsigned int mcr;
877
878 dbg("%s - port %d", __func__, port->number);
879
880 cflag = tty->termios->c_cflag;
881 iflag = tty->termios->c_iflag;
882
883 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
884 dbg("%s - old clfag %08x, old iflag %08x", __func__,
885 old_termios->c_cflag, old_termios->c_iflag);
886
887 if (tport == NULL)
888 return;
889
890 config = kmalloc(sizeof(*config), GFP_KERNEL);
891 if (!config) {
892 dev_err(&port->dev, "%s - out of memory\n", __func__);
893 return;
894 }
895
896 config->wFlags = 0;
897
898 /* these flags must be set */
899 config->wFlags |= TI_UART_ENABLE_MS_INTS;
900 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
901 config->bUartMode = (__u8)(tport->tp_uart_mode);
902
903 switch (cflag & CSIZE) {
904 case CS5:
905 config->bDataBits = TI_UART_5_DATA_BITS;
906 break;
907 case CS6:
908 config->bDataBits = TI_UART_6_DATA_BITS;
909 break;
910 case CS7:
911 config->bDataBits = TI_UART_7_DATA_BITS;
912 break;
913 default:
914 case CS8:
915 config->bDataBits = TI_UART_8_DATA_BITS;
916 break;
917 }
918
919 /* CMSPAR isn't supported by this driver */
920 tty->termios->c_cflag &= ~CMSPAR;
921
922 if (cflag & PARENB) {
923 if (cflag & PARODD) {
924 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
925 config->bParity = TI_UART_ODD_PARITY;
926 } else {
927 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
928 config->bParity = TI_UART_EVEN_PARITY;
929 }
930 } else {
931 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
932 config->bParity = TI_UART_NO_PARITY;
933 }
934
935 if (cflag & CSTOPB)
936 config->bStopBits = TI_UART_2_STOP_BITS;
937 else
938 config->bStopBits = TI_UART_1_STOP_BITS;
939
940 if (cflag & CRTSCTS) {
941 /* RTS flow control must be off to drop RTS for baud rate B0 */
942 if ((cflag & CBAUD) != B0)
943 config->wFlags |= TI_UART_ENABLE_RTS_IN;
944 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
945 } else {
946 tty->hw_stopped = 0;
947 ti_restart_read(tport, tty);
948 }
949
950 if (I_IXOFF(tty) || I_IXON(tty)) {
951 config->cXon = START_CHAR(tty);
952 config->cXoff = STOP_CHAR(tty);
953
954 if (I_IXOFF(tty))
955 config->wFlags |= TI_UART_ENABLE_X_IN;
956 else
957 ti_restart_read(tport, tty);
958
959 if (I_IXON(tty))
960 config->wFlags |= TI_UART_ENABLE_X_OUT;
961 }
962
963 baud = tty_get_baud_rate(tty);
964 if (!baud)
965 baud = 9600;
966 if (tport->tp_tdev->td_is_3410)
967 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
968 else
969 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
970
971 /* FIXME: Should calculate resulting baud here and report it back */
972 if ((cflag & CBAUD) != B0)
973 tty_encode_baud_rate(tty, baud, baud);
974
975 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
976 __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
977
978 cpu_to_be16s(&config->wBaudRate);
979 cpu_to_be16s(&config->wFlags);
980
981 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
982 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
983 sizeof(*config));
984 if (status)
985 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
986 __func__, port_number, status);
987
988 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
989 mcr = tport->tp_shadow_mcr;
990 /* if baud rate is B0, clear RTS and DTR */
991 if ((cflag & CBAUD) == B0)
992 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
993 status = ti_set_mcr(tport, mcr);
994 if (status)
995 dev_err(&port->dev,
996 "%s - cannot set modem control on port %d, %d\n",
997 __func__, port_number, status);
998
999 kfree(config);
1000}
1001
1002
1003static int ti_tiocmget(struct tty_struct *tty)
1004{
1005 struct usb_serial_port *port = tty->driver_data;
1006 struct ti_port *tport = usb_get_serial_port_data(port);
1007 unsigned int result;
1008 unsigned int msr;
1009 unsigned int mcr;
1010 unsigned long flags;
1011
1012 dbg("%s - port %d", __func__, port->number);
1013
1014 if (tport == NULL)
1015 return -ENODEV;
1016
1017 spin_lock_irqsave(&tport->tp_lock, flags);
1018 msr = tport->tp_msr;
1019 mcr = tport->tp_shadow_mcr;
1020 spin_unlock_irqrestore(&tport->tp_lock, flags);
1021
1022 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1023 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1024 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1025 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1026 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1027 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1028 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1029
1030 dbg("%s - 0x%04X", __func__, result);
1031
1032 return result;
1033}
1034
1035
1036static int ti_tiocmset(struct tty_struct *tty,
1037 unsigned int set, unsigned int clear)
1038{
1039 struct usb_serial_port *port = tty->driver_data;
1040 struct ti_port *tport = usb_get_serial_port_data(port);
1041 unsigned int mcr;
1042 unsigned long flags;
1043
1044 dbg("%s - port %d", __func__, port->number);
1045
1046 if (tport == NULL)
1047 return -ENODEV;
1048
1049 spin_lock_irqsave(&tport->tp_lock, flags);
1050 mcr = tport->tp_shadow_mcr;
1051
1052 if (set & TIOCM_RTS)
1053 mcr |= TI_MCR_RTS;
1054 if (set & TIOCM_DTR)
1055 mcr |= TI_MCR_DTR;
1056 if (set & TIOCM_LOOP)
1057 mcr |= TI_MCR_LOOP;
1058
1059 if (clear & TIOCM_RTS)
1060 mcr &= ~TI_MCR_RTS;
1061 if (clear & TIOCM_DTR)
1062 mcr &= ~TI_MCR_DTR;
1063 if (clear & TIOCM_LOOP)
1064 mcr &= ~TI_MCR_LOOP;
1065 spin_unlock_irqrestore(&tport->tp_lock, flags);
1066
1067 return ti_set_mcr(tport, mcr);
1068}
1069
1070
1071static void ti_break(struct tty_struct *tty, int break_state)
1072{
1073 struct usb_serial_port *port = tty->driver_data;
1074 struct ti_port *tport = usb_get_serial_port_data(port);
1075 int status;
1076
1077 dbg("%s - state = %d", __func__, break_state);
1078
1079 if (tport == NULL)
1080 return;
1081
1082 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1083
1084 status = ti_write_byte(tport->tp_tdev,
1085 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1086 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1087
1088 if (status)
1089 dbg("%s - error setting break, %d", __func__, status);
1090}
1091
1092
1093static void ti_interrupt_callback(struct urb *urb)
1094{
1095 struct ti_device *tdev = urb->context;
1096 struct usb_serial_port *port;
1097 struct usb_serial *serial = tdev->td_serial;
1098 struct ti_port *tport;
1099 struct device *dev = &urb->dev->dev;
1100 unsigned char *data = urb->transfer_buffer;
1101 int length = urb->actual_length;
1102 int port_number;
1103 int function;
1104 int status = urb->status;
1105 int retval;
1106 __u8 msr;
1107
1108 dbg("%s", __func__);
1109
1110 switch (status) {
1111 case 0:
1112 break;
1113 case -ECONNRESET:
1114 case -ENOENT:
1115 case -ESHUTDOWN:
1116 dbg("%s - urb shutting down, %d", __func__, status);
1117 tdev->td_urb_error = 1;
1118 return;
1119 default:
1120 dev_err(dev, "%s - nonzero urb status, %d\n",
1121 __func__, status);
1122 tdev->td_urb_error = 1;
1123 goto exit;
1124 }
1125
1126 if (length != 2) {
1127 dbg("%s - bad packet size, %d", __func__, length);
1128 goto exit;
1129 }
1130
1131 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1132 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1133 goto exit;
1134 }
1135
1136 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1137 function = TI_GET_FUNC_FROM_CODE(data[0]);
1138
1139 dbg("%s - port_number %d, function %d, data 0x%02X",
1140 __func__, port_number, function, data[1]);
1141
1142 if (port_number >= serial->num_ports) {
1143 dev_err(dev, "%s - bad port number, %d\n",
1144 __func__, port_number);
1145 goto exit;
1146 }
1147
1148 port = serial->port[port_number];
1149
1150 tport = usb_get_serial_port_data(port);
1151 if (!tport)
1152 goto exit;
1153
1154 switch (function) {
1155 case TI_CODE_DATA_ERROR:
1156 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1157 __func__, port_number, data[1]);
1158 break;
1159
1160 case TI_CODE_MODEM_STATUS:
1161 msr = data[1];
1162 dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr);
1163 ti_handle_new_msr(tport, msr);
1164 break;
1165
1166 default:
1167 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1168 __func__, data[1]);
1169 break;
1170 }
1171
1172exit:
1173 retval = usb_submit_urb(urb, GFP_ATOMIC);
1174 if (retval)
1175 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1176 __func__, retval);
1177}
1178
1179
1180static void ti_bulk_in_callback(struct urb *urb)
1181{
1182 struct ti_port *tport = urb->context;
1183 struct usb_serial_port *port = tport->tp_port;
1184 struct device *dev = &urb->dev->dev;
1185 int status = urb->status;
1186 int retval = 0;
1187 struct tty_struct *tty;
1188
1189 dbg("%s", __func__);
1190
1191 switch (status) {
1192 case 0:
1193 break;
1194 case -ECONNRESET:
1195 case -ENOENT:
1196 case -ESHUTDOWN:
1197 dbg("%s - urb shutting down, %d", __func__, status);
1198 tport->tp_tdev->td_urb_error = 1;
1199 wake_up_interruptible(&tport->tp_write_wait);
1200 return;
1201 default:
1202 dev_err(dev, "%s - nonzero urb status, %d\n",
1203 __func__, status);
1204 tport->tp_tdev->td_urb_error = 1;
1205 wake_up_interruptible(&tport->tp_write_wait);
1206 }
1207
1208 if (status == -EPIPE)
1209 goto exit;
1210
1211 if (status) {
1212 dev_err(dev, "%s - stopping read!\n", __func__);
1213 return;
1214 }
1215
1216 tty = tty_port_tty_get(&port->port);
1217 if (tty) {
1218 if (urb->actual_length) {
1219 usb_serial_debug_data(debug, dev, __func__,
1220 urb->actual_length, urb->transfer_buffer);
1221
1222 if (!tport->tp_is_open)
1223 dbg("%s - port closed, dropping data",
1224 __func__);
1225 else
1226 ti_recv(&urb->dev->dev, tty,
1227 urb->transfer_buffer,
1228 urb->actual_length);
1229 spin_lock(&tport->tp_lock);
1230 tport->tp_icount.rx += urb->actual_length;
1231 spin_unlock(&tport->tp_lock);
1232 }
1233 tty_kref_put(tty);
1234 }
1235
1236exit:
1237 /* continue to read unless stopping */
1238 spin_lock(&tport->tp_lock);
1239 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
1240 urb->dev = port->serial->dev;
1241 retval = usb_submit_urb(urb, GFP_ATOMIC);
1242 } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
1243 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1244 }
1245 spin_unlock(&tport->tp_lock);
1246 if (retval)
1247 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1248 __func__, retval);
1249}
1250
1251
1252static void ti_bulk_out_callback(struct urb *urb)
1253{
1254 struct ti_port *tport = urb->context;
1255 struct usb_serial_port *port = tport->tp_port;
1256 struct device *dev = &urb->dev->dev;
1257 int status = urb->status;
1258
1259 dbg("%s - port %d", __func__, port->number);
1260
1261 tport->tp_write_urb_in_use = 0;
1262
1263 switch (status) {
1264 case 0:
1265 break;
1266 case -ECONNRESET:
1267 case -ENOENT:
1268 case -ESHUTDOWN:
1269 dbg("%s - urb shutting down, %d", __func__, status);
1270 tport->tp_tdev->td_urb_error = 1;
1271 wake_up_interruptible(&tport->tp_write_wait);
1272 return;
1273 default:
1274 dev_err(dev, "%s - nonzero urb status, %d\n",
1275 __func__, status);
1276 tport->tp_tdev->td_urb_error = 1;
1277 wake_up_interruptible(&tport->tp_write_wait);
1278 }
1279
1280 /* send any buffered data */
1281 ti_send(tport);
1282}
1283
1284
1285static void ti_recv(struct device *dev, struct tty_struct *tty,
1286 unsigned char *data, int length)
1287{
1288 int cnt;
1289
1290 do {
1291 cnt = tty_insert_flip_string(tty, data, length);
1292 if (cnt < length) {
1293 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1294 __func__, length - cnt);
1295 if (cnt == 0)
1296 break;
1297 }
1298 tty_flip_buffer_push(tty);
1299 data += cnt;
1300 length -= cnt;
1301 } while (length > 0);
1302
1303}
1304
1305
1306static void ti_send(struct ti_port *tport)
1307{
1308 int count, result;
1309 struct usb_serial_port *port = tport->tp_port;
1310 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1311 unsigned long flags;
1312
1313
1314 dbg("%s - port %d", __func__, port->number);
1315
1316 spin_lock_irqsave(&tport->tp_lock, flags);
1317
1318 if (tport->tp_write_urb_in_use)
1319 goto unlock;
1320
1321 count = kfifo_out(&tport->write_fifo,
1322 port->write_urb->transfer_buffer,
1323 port->bulk_out_size);
1324
1325 if (count == 0)
1326 goto unlock;
1327
1328 tport->tp_write_urb_in_use = 1;
1329
1330 spin_unlock_irqrestore(&tport->tp_lock, flags);
1331
1332 usb_serial_debug_data(debug, &port->dev, __func__, count,
1333 port->write_urb->transfer_buffer);
1334
1335 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1336 usb_sndbulkpipe(port->serial->dev,
1337 port->bulk_out_endpointAddress),
1338 port->write_urb->transfer_buffer, count,
1339 ti_bulk_out_callback, tport);
1340
1341 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1342 if (result) {
1343 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1344 __func__, result);
1345 tport->tp_write_urb_in_use = 0;
1346 /* TODO: reschedule ti_send */
1347 } else {
1348 spin_lock_irqsave(&tport->tp_lock, flags);
1349 tport->tp_icount.tx += count;
1350 spin_unlock_irqrestore(&tport->tp_lock, flags);
1351 }
1352
1353 /* more room in the buffer for new writes, wakeup */
1354 if (tty)
1355 tty_wakeup(tty);
1356 tty_kref_put(tty);
1357 wake_up_interruptible(&tport->tp_write_wait);
1358 return;
1359unlock:
1360 spin_unlock_irqrestore(&tport->tp_lock, flags);
1361 tty_kref_put(tty);
1362 return;
1363}
1364
1365
1366static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1367{
1368 unsigned long flags;
1369 int status;
1370
1371 status = ti_write_byte(tport->tp_tdev,
1372 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1373 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1374
1375 spin_lock_irqsave(&tport->tp_lock, flags);
1376 if (!status)
1377 tport->tp_shadow_mcr = mcr;
1378 spin_unlock_irqrestore(&tport->tp_lock, flags);
1379
1380 return status;
1381}
1382
1383
1384static int ti_get_lsr(struct ti_port *tport)
1385{
1386 int size, status;
1387 struct ti_device *tdev = tport->tp_tdev;
1388 struct usb_serial_port *port = tport->tp_port;
1389 int port_number = port->number - port->serial->minor;
1390 struct ti_port_status *data;
1391
1392 dbg("%s - port %d", __func__, port->number);
1393
1394 size = sizeof(struct ti_port_status);
1395 data = kmalloc(size, GFP_KERNEL);
1396 if (!data) {
1397 dev_err(&port->dev, "%s - out of memory\n", __func__);
1398 return -ENOMEM;
1399 }
1400
1401 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1402 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1403 if (status) {
1404 dev_err(&port->dev,
1405 "%s - get port status command failed, %d\n",
1406 __func__, status);
1407 goto free_data;
1408 }
1409
1410 dbg("%s - lsr 0x%02X", __func__, data->bLSR);
1411
1412 tport->tp_lsr = data->bLSR;
1413
1414free_data:
1415 kfree(data);
1416 return status;
1417}
1418
1419
1420static int ti_get_serial_info(struct ti_port *tport,
1421 struct serial_struct __user *ret_arg)
1422{
1423 struct usb_serial_port *port = tport->tp_port;
1424 struct serial_struct ret_serial;
1425
1426 if (!ret_arg)
1427 return -EFAULT;
1428
1429 memset(&ret_serial, 0, sizeof(ret_serial));
1430
1431 ret_serial.type = PORT_16550A;
1432 ret_serial.line = port->serial->minor;
1433 ret_serial.port = port->number - port->serial->minor;
1434 ret_serial.flags = tport->tp_flags;
1435 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1436 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1437 ret_serial.closing_wait = tport->tp_closing_wait;
1438
1439 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1440 return -EFAULT;
1441
1442 return 0;
1443}
1444
1445
1446static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1447 struct serial_struct __user *new_arg)
1448{
1449 struct serial_struct new_serial;
1450
1451 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1452 return -EFAULT;
1453
1454 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1455 tport->tp_closing_wait = new_serial.closing_wait;
1456
1457 return 0;
1458}
1459
1460
1461static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1462{
1463 struct async_icount *icount;
1464 struct tty_struct *tty;
1465 unsigned long flags;
1466
1467 dbg("%s - msr 0x%02X", __func__, msr);
1468
1469 if (msr & TI_MSR_DELTA_MASK) {
1470 spin_lock_irqsave(&tport->tp_lock, flags);
1471 icount = &tport->tp_icount;
1472 if (msr & TI_MSR_DELTA_CTS)
1473 icount->cts++;
1474 if (msr & TI_MSR_DELTA_DSR)
1475 icount->dsr++;
1476 if (msr & TI_MSR_DELTA_CD)
1477 icount->dcd++;
1478 if (msr & TI_MSR_DELTA_RI)
1479 icount->rng++;
1480 wake_up_interruptible(&tport->tp_msr_wait);
1481 spin_unlock_irqrestore(&tport->tp_lock, flags);
1482 }
1483
1484 tport->tp_msr = msr & TI_MSR_MASK;
1485
1486 /* handle CTS flow control */
1487 tty = tty_port_tty_get(&tport->tp_port->port);
1488 if (tty && C_CRTSCTS(tty)) {
1489 if (msr & TI_MSR_CTS) {
1490 tty->hw_stopped = 0;
1491 tty_wakeup(tty);
1492 } else {
1493 tty->hw_stopped = 1;
1494 }
1495 }
1496 tty_kref_put(tty);
1497}
1498
1499
1500static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1501{
1502 struct ti_device *tdev = tport->tp_tdev;
1503 struct usb_serial_port *port = tport->tp_port;
1504 wait_queue_t wait;
1505
1506 dbg("%s - port %d", __func__, port->number);
1507
1508 spin_lock_irq(&tport->tp_lock);
1509
1510 /* wait for data to drain from the buffer */
1511 tdev->td_urb_error = 0;
1512 init_waitqueue_entry(&wait, current);
1513 add_wait_queue(&tport->tp_write_wait, &wait);
1514 for (;;) {
1515 set_current_state(TASK_INTERRUPTIBLE);
1516 if (kfifo_len(&tport->write_fifo) == 0
1517 || timeout == 0 || signal_pending(current)
1518 || tdev->td_urb_error
1519 || port->serial->disconnected) /* disconnect */
1520 break;
1521 spin_unlock_irq(&tport->tp_lock);
1522 timeout = schedule_timeout(timeout);
1523 spin_lock_irq(&tport->tp_lock);
1524 }
1525 set_current_state(TASK_RUNNING);
1526 remove_wait_queue(&tport->tp_write_wait, &wait);
1527
1528 /* flush any remaining data in the buffer */
1529 if (flush)
1530 kfifo_reset_out(&tport->write_fifo);
1531
1532 spin_unlock_irq(&tport->tp_lock);
1533
1534 mutex_lock(&port->serial->disc_mutex);
1535 /* wait for data to drain from the device */
1536 /* wait for empty tx register, plus 20 ms */
1537 timeout += jiffies;
1538 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1539 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1540 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1541 && !port->serial->disconnected) {
1542 if (ti_get_lsr(tport))
1543 break;
1544 mutex_unlock(&port->serial->disc_mutex);
1545 msleep_interruptible(20);
1546 mutex_lock(&port->serial->disc_mutex);
1547 }
1548 mutex_unlock(&port->serial->disc_mutex);
1549}
1550
1551
1552static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1553{
1554 unsigned long flags;
1555
1556 spin_lock_irqsave(&tport->tp_lock, flags);
1557
1558 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1559 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1560
1561 spin_unlock_irqrestore(&tport->tp_lock, flags);
1562}
1563
1564
1565static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1566{
1567 struct urb *urb;
1568 int status = 0;
1569 unsigned long flags;
1570
1571 spin_lock_irqsave(&tport->tp_lock, flags);
1572
1573 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1574 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1575 urb = tport->tp_port->read_urb;
1576 spin_unlock_irqrestore(&tport->tp_lock, flags);
1577 urb->complete = ti_bulk_in_callback;
1578 urb->context = tport;
1579 urb->dev = tport->tp_port->serial->dev;
1580 status = usb_submit_urb(urb, GFP_KERNEL);
1581 } else {
1582 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1583 spin_unlock_irqrestore(&tport->tp_lock, flags);
1584 }
1585
1586 return status;
1587}
1588
1589
1590static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1591 __u16 moduleid, __u16 value, __u8 *data, int size)
1592{
1593 int status;
1594
1595 status = usb_control_msg(tdev->td_serial->dev,
1596 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1597 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1598 value, moduleid, data, size, 1000);
1599
1600 if (status == size)
1601 status = 0;
1602
1603 if (status > 0)
1604 status = -ECOMM;
1605
1606 return status;
1607}
1608
1609
1610static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1611 __u16 moduleid, __u16 value, __u8 *data, int size)
1612{
1613 int status;
1614
1615 status = usb_control_msg(tdev->td_serial->dev,
1616 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1617 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1618 value, moduleid, data, size, 1000);
1619
1620 if (status == size)
1621 status = 0;
1622
1623 if (status > 0)
1624 status = -ECOMM;
1625
1626 return status;
1627}
1628
1629
1630static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1631 __u8 mask, __u8 byte)
1632{
1633 int status;
1634 unsigned int size;
1635 struct ti_write_data_bytes *data;
1636 struct device *dev = &tdev->td_serial->dev->dev;
1637
1638 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1639 __func__, addr, mask, byte);
1640
1641 size = sizeof(struct ti_write_data_bytes) + 2;
1642 data = kmalloc(size, GFP_KERNEL);
1643 if (!data) {
1644 dev_err(dev, "%s - out of memory\n", __func__);
1645 return -ENOMEM;
1646 }
1647
1648 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1649 data->bDataType = TI_RW_DATA_BYTE;
1650 data->bDataCounter = 1;
1651 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1652 data->wBaseAddrLo = cpu_to_be16(addr);
1653 data->bData[0] = mask;
1654 data->bData[1] = byte;
1655
1656 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1657 (__u8 *)data, size);
1658
1659 if (status < 0)
1660 dev_err(dev, "%s - failed, %d\n", __func__, status);
1661
1662 kfree(data);
1663
1664 return status;
1665}
1666
1667static int ti_do_download(struct usb_device *dev, int pipe,
1668 u8 *buffer, int size)
1669{
1670 int pos;
1671 u8 cs = 0;
1672 int done;
1673 struct ti_firmware_header *header;
1674 int status = 0;
1675 int len;
1676
1677 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1678 cs = (__u8)(cs + buffer[pos]);
1679
1680 header = (struct ti_firmware_header *)buffer;
1681 header->wLength = cpu_to_le16((__u16)(size
1682 - sizeof(struct ti_firmware_header)));
1683 header->bCheckSum = cs;
1684
1685 dbg("%s - downloading firmware", __func__);
1686 for (pos = 0; pos < size; pos += done) {
1687 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1688 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1689 &done, 1000);
1690 if (status)
1691 break;
1692 }
1693 return status;
1694}
1695
1696static int ti_download_firmware(struct ti_device *tdev)
1697{
1698 int status;
1699 int buffer_size;
1700 __u8 *buffer;
1701 struct usb_device *dev = tdev->td_serial->dev;
1702 unsigned int pipe = usb_sndbulkpipe(dev,
1703 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1704 const struct firmware *fw_p;
1705 char buf[32];
1706
1707 dbg("%s\n", __func__);
1708 /* try ID specific firmware first, then try generic firmware */
1709 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1710 dev->descriptor.idProduct);
1711 if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) {
1712 buf[0] = '\0';
1713 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1714 switch (dev->descriptor.idProduct) {
1715 case MTS_CDMA_PRODUCT_ID:
1716 strcpy(buf, "mts_cdma.fw");
1717 break;
1718 case MTS_GSM_PRODUCT_ID:
1719 strcpy(buf, "mts_gsm.fw");
1720 break;
1721 case MTS_EDGE_PRODUCT_ID:
1722 strcpy(buf, "mts_edge.fw");
1723 break;
1724 case MTS_MT9234MU_PRODUCT_ID:
1725 strcpy(buf, "mts_mt9234mu.fw");
1726 break;
1727 case MTS_MT9234ZBA_PRODUCT_ID:
1728 strcpy(buf, "mts_mt9234zba.fw");
1729 break;
1730 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1731 strcpy(buf, "mts_mt9234zba.fw");
1732 break; }
1733 }
1734 if (buf[0] == '\0') {
1735 if (tdev->td_is_3410)
1736 strcpy(buf, "ti_3410.fw");
1737 else
1738 strcpy(buf, "ti_5052.fw");
1739 }
1740 status = request_firmware(&fw_p, buf, &dev->dev);
1741 }
1742 if (status) {
1743 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1744 return -ENOENT;
1745 }
1746 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1747 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1748 release_firmware(fw_p);
1749 return -ENOENT;
1750 }
1751
1752 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1753 buffer = kmalloc(buffer_size, GFP_KERNEL);
1754 if (buffer) {
1755 memcpy(buffer, fw_p->data, fw_p->size);
1756 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1757 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1758 kfree(buffer);
1759 } else {
1760 dbg("%s ENOMEM\n", __func__);
1761 status = -ENOMEM;
1762 }
1763 release_firmware(fw_p);
1764 if (status) {
1765 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1766 __func__, status);
1767 return status;
1768 }
1769
1770 dbg("%s - download successful", __func__);
1771
1772 return 0;
1773}