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dm thin metadata: fix __udivdi3 undefined on 32-bit
[linux/fpc-iii.git] / drivers / usb / serial / ti_usb_3410_5052.c
blobfe7f5ace60640929e91d007a94ce963f12be172d
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
64 struct 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
78 struct 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
89 static int ti_startup(struct usb_serial *serial);
90 static void ti_release(struct usb_serial *serial);
91 static int ti_port_probe(struct usb_serial_port *port);
92 static int ti_port_remove(struct usb_serial_port *port);
93 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
94 static void ti_close(struct usb_serial_port *port);
95 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
96 const unsigned char *data, int count);
97 static int ti_write_room(struct tty_struct *tty);
98 static int ti_chars_in_buffer(struct tty_struct *tty);
99 static bool ti_tx_empty(struct usb_serial_port *port);
100 static void ti_throttle(struct tty_struct *tty);
101 static void ti_unthrottle(struct tty_struct *tty);
102 static int ti_ioctl(struct tty_struct *tty,
103 unsigned int cmd, unsigned long arg);
104 static void ti_set_termios(struct tty_struct *tty,
105 struct usb_serial_port *port, struct ktermios *old_termios);
106 static int ti_tiocmget(struct tty_struct *tty);
107 static int ti_tiocmset(struct tty_struct *tty,
108 unsigned int set, unsigned int clear);
109 static void ti_break(struct tty_struct *tty, int break_state);
110 static void ti_interrupt_callback(struct urb *urb);
111 static void ti_bulk_in_callback(struct urb *urb);
112 static void ti_bulk_out_callback(struct urb *urb);
113
114 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
115 int length);
116 static void ti_send(struct ti_port *tport);
117 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
118 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
119 static int ti_get_serial_info(struct ti_port *tport,
120 struct serial_struct __user *ret_arg);
121 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
122 struct serial_struct __user *new_arg);
123 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
124
125 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
126 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
127
128 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
129 __u16 moduleid, __u16 value, __u8 *data, int size);
130 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
131 __u16 moduleid, __u16 value, __u8 *data, int size);
132
133 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
134 unsigned long addr, __u8 mask, __u8 byte);
135
136 static int ti_download_firmware(struct ti_device *tdev);
137
138
139 /* Data */
140
141 /* module parameters */
142 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
143
144 /* supported devices */
145 static 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
166 static 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
174 static 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
199 static 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
231 static 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
263 static struct usb_serial_driver * const serial_drivers[] = {
264 &ti_1port_device, &ti_2port_device, NULL
265 };
266
267 /* Module */
268
269 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
270 MODULE_DESCRIPTION(TI_DRIVER_DESC);
271 MODULE_LICENSE("GPL");
272
273 MODULE_FIRMWARE("ti_3410.fw");
274 MODULE_FIRMWARE("ti_5052.fw");
275 MODULE_FIRMWARE("mts_cdma.fw");
276 MODULE_FIRMWARE("mts_gsm.fw");
277 MODULE_FIRMWARE("mts_edge.fw");
278 MODULE_FIRMWARE("mts_mt9234mu.fw");
279 MODULE_FIRMWARE("mts_mt9234zba.fw");
280
281 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
282 MODULE_PARM_DESC(closing_wait,
283 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
284
285 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
286
287 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
288
289 /* Functions */
290
291 static 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 if (serial->num_bulk_in < serial->num_ports ||
343 serial->num_bulk_out < serial->num_ports) {
344 dev_err(&serial->interface->dev, "missing endpoints\n");
345 status = -ENODEV;
346 goto free_tdev;
347 }
348
349 return 0;
350
351 free_tdev:
352 kfree(tdev);
353 usb_set_serial_data(serial, NULL);
354 return status;
355 }
356
357
358 static void ti_release(struct usb_serial *serial)
359 {
360 struct ti_device *tdev = usb_get_serial_data(serial);
361
362 kfree(tdev);
363 }
364
365 static int ti_port_probe(struct usb_serial_port *port)
366 {
367 struct ti_port *tport;
368
369 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
370 if (!tport)
371 return -ENOMEM;
372
373 spin_lock_init(&tport->tp_lock);
374 if (port == port->serial->port[0])
375 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
376 else
377 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
378 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
379 tport->tp_port = port;
380 tport->tp_tdev = usb_get_serial_data(port->serial);
381 tport->tp_uart_mode = 0; /* default is RS232 */
382
383 usb_set_serial_port_data(port, tport);
384
385 port->port.drain_delay = 3;
386
387 return 0;
388 }
389
390 static int ti_port_remove(struct usb_serial_port *port)
391 {
392 struct ti_port *tport;
393
394 tport = usb_get_serial_port_data(port);
395 kfree(tport);
396
397 return 0;
398 }
399
400 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
401 {
402 struct ti_port *tport = usb_get_serial_port_data(port);
403 struct ti_device *tdev;
404 struct usb_device *dev;
405 struct urb *urb;
406 int port_number;
407 int status;
408 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
409 TI_PIPE_TIMEOUT_ENABLE |
410 (TI_TRANSFER_TIMEOUT << 2));
411
412 if (tport == NULL)
413 return -ENODEV;
414
415 dev = port->serial->dev;
416 tdev = tport->tp_tdev;
417
418 /* only one open on any port on a device at a time */
419 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
420 return -ERESTARTSYS;
421
422 port_number = port->port_number;
423
424 tport->tp_msr = 0;
425 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
426
427 /* start interrupt urb the first time a port is opened on this device */
428 if (tdev->td_open_port_count == 0) {
429 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
430 urb = tdev->td_serial->port[0]->interrupt_in_urb;
431 if (!urb) {
432 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
433 status = -EINVAL;
434 goto release_lock;
435 }
436 urb->context = tdev;
437 status = usb_submit_urb(urb, GFP_KERNEL);
438 if (status) {
439 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
440 goto release_lock;
441 }
442 }
443
444 if (tty)
445 ti_set_termios(tty, port, &tty->termios);
446
447 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
448 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
449 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
450 if (status) {
451 dev_err(&port->dev, "%s - cannot send open command, %d\n",
452 __func__, status);
453 goto unlink_int_urb;
454 }
455
456 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
457 status = ti_command_out_sync(tdev, TI_START_PORT,
458 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
459 if (status) {
460 dev_err(&port->dev, "%s - cannot send start command, %d\n",
461 __func__, status);
462 goto unlink_int_urb;
463 }
464
465 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
466 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
467 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
468 if (status) {
469 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
470 __func__, status);
471 goto unlink_int_urb;
472 }
473 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
474 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
475 if (status) {
476 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
477 __func__, status);
478 goto unlink_int_urb;
479 }
480
481 /* reset the data toggle on the bulk endpoints to work around bug in
482 * host controllers where things get out of sync some times */
483 usb_clear_halt(dev, port->write_urb->pipe);
484 usb_clear_halt(dev, port->read_urb->pipe);
485
486 if (tty)
487 ti_set_termios(tty, port, &tty->termios);
488
489 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
490 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
491 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
492 if (status) {
493 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
494 __func__, status);
495 goto unlink_int_urb;
496 }
497
498 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
499 status = ti_command_out_sync(tdev, TI_START_PORT,
500 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
501 if (status) {
502 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
503 __func__, status);
504 goto unlink_int_urb;
505 }
506
507 /* start read urb */
508 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
509 urb = port->read_urb;
510 if (!urb) {
511 dev_err(&port->dev, "%s - no read urb\n", __func__);
512 status = -EINVAL;
513 goto unlink_int_urb;
514 }
515 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
516 urb->context = tport;
517 status = usb_submit_urb(urb, GFP_KERNEL);
518 if (status) {
519 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
520 __func__, status);
521 goto unlink_int_urb;
522 }
523
524 tport->tp_is_open = 1;
525 ++tdev->td_open_port_count;
526
527 goto release_lock;
528
529 unlink_int_urb:
530 if (tdev->td_open_port_count == 0)
531 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
532 release_lock:
533 mutex_unlock(&tdev->td_open_close_lock);
534 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
535 return status;
536 }
537
538
539 static void ti_close(struct usb_serial_port *port)
540 {
541 struct ti_device *tdev;
542 struct ti_port *tport;
543 int port_number;
544 int status;
545 int do_unlock;
546 unsigned long flags;
547
548 tdev = usb_get_serial_data(port->serial);
549 tport = usb_get_serial_port_data(port);
550 if (tdev == NULL || tport == NULL)
551 return;
552
553 tport->tp_is_open = 0;
554
555 usb_kill_urb(port->read_urb);
556 usb_kill_urb(port->write_urb);
557 tport->tp_write_urb_in_use = 0;
558 spin_lock_irqsave(&tport->tp_lock, flags);
559 kfifo_reset_out(&port->write_fifo);
560 spin_unlock_irqrestore(&tport->tp_lock, flags);
561
562 port_number = port->port_number;
563
564 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
565 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
566 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
567 if (status)
568 dev_err(&port->dev,
569 "%s - cannot send close port command, %d\n"
570 , __func__, status);
571
572 /* if mutex_lock is interrupted, continue anyway */
573 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
574 --tport->tp_tdev->td_open_port_count;
575 if (tport->tp_tdev->td_open_port_count <= 0) {
576 /* last port is closed, shut down interrupt urb */
577 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
578 tport->tp_tdev->td_open_port_count = 0;
579 }
580 if (do_unlock)
581 mutex_unlock(&tdev->td_open_close_lock);
582 }
583
584
585 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
586 const unsigned char *data, int count)
587 {
588 struct ti_port *tport = usb_get_serial_port_data(port);
589
590 if (count == 0) {
591 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
592 return 0;
593 }
594
595 if (tport == NULL || !tport->tp_is_open)
596 return -ENODEV;
597
598 count = kfifo_in_locked(&port->write_fifo, data, count,
599 &tport->tp_lock);
600 ti_send(tport);
601
602 return count;
603 }
604
605
606 static int ti_write_room(struct tty_struct *tty)
607 {
608 struct usb_serial_port *port = tty->driver_data;
609 struct ti_port *tport = usb_get_serial_port_data(port);
610 int room = 0;
611 unsigned long flags;
612
613 if (tport == NULL)
614 return 0;
615
616 spin_lock_irqsave(&tport->tp_lock, flags);
617 room = kfifo_avail(&port->write_fifo);
618 spin_unlock_irqrestore(&tport->tp_lock, flags);
619
620 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
621 return room;
622 }
623
624
625 static int ti_chars_in_buffer(struct tty_struct *tty)
626 {
627 struct usb_serial_port *port = tty->driver_data;
628 struct ti_port *tport = usb_get_serial_port_data(port);
629 int chars = 0;
630 unsigned long flags;
631
632 if (tport == NULL)
633 return 0;
634
635 spin_lock_irqsave(&tport->tp_lock, flags);
636 chars = kfifo_len(&port->write_fifo);
637 spin_unlock_irqrestore(&tport->tp_lock, flags);
638
639 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
640 return chars;
641 }
642
643 static bool ti_tx_empty(struct usb_serial_port *port)
644 {
645 struct ti_port *tport = usb_get_serial_port_data(port);
646 int ret;
647 u8 lsr;
648
649 ret = ti_get_lsr(tport, &lsr);
650 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
651 return false;
652
653 return true;
654 }
655
656 static void ti_throttle(struct tty_struct *tty)
657 {
658 struct usb_serial_port *port = tty->driver_data;
659 struct ti_port *tport = usb_get_serial_port_data(port);
660
661 if (tport == NULL)
662 return;
663
664 if (I_IXOFF(tty) || C_CRTSCTS(tty))
665 ti_stop_read(tport, tty);
666
667 }
668
669
670 static void ti_unthrottle(struct tty_struct *tty)
671 {
672 struct usb_serial_port *port = tty->driver_data;
673 struct ti_port *tport = usb_get_serial_port_data(port);
674 int status;
675
676 if (tport == NULL)
677 return;
678
679 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
680 status = ti_restart_read(tport, tty);
681 if (status)
682 dev_err(&port->dev, "%s - cannot restart read, %d\n",
683 __func__, status);
684 }
685 }
686
687 static int ti_ioctl(struct tty_struct *tty,
688 unsigned int cmd, unsigned long arg)
689 {
690 struct usb_serial_port *port = tty->driver_data;
691 struct ti_port *tport = usb_get_serial_port_data(port);
692
693 if (tport == NULL)
694 return -ENODEV;
695
696 switch (cmd) {
697 case TIOCGSERIAL:
698 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
699 return ti_get_serial_info(tport,
700 (struct serial_struct __user *)arg);
701 case TIOCSSERIAL:
702 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
703 return ti_set_serial_info(tty, tport,
704 (struct serial_struct __user *)arg);
705 }
706 return -ENOIOCTLCMD;
707 }
708
709
710 static void ti_set_termios(struct tty_struct *tty,
711 struct usb_serial_port *port, struct ktermios *old_termios)
712 {
713 struct ti_port *tport = usb_get_serial_port_data(port);
714 struct ti_uart_config *config;
715 tcflag_t cflag, iflag;
716 int baud;
717 int status;
718 int port_number = port->port_number;
719 unsigned int mcr;
720
721 cflag = tty->termios.c_cflag;
722 iflag = tty->termios.c_iflag;
723
724 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
725 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
726 old_termios->c_cflag, old_termios->c_iflag);
727
728 if (tport == NULL)
729 return;
730
731 config = kmalloc(sizeof(*config), GFP_KERNEL);
732 if (!config)
733 return;
734
735 config->wFlags = 0;
736
737 /* these flags must be set */
738 config->wFlags |= TI_UART_ENABLE_MS_INTS;
739 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
740 config->bUartMode = (__u8)(tport->tp_uart_mode);
741
742 switch (cflag & CSIZE) {
743 case CS5:
744 config->bDataBits = TI_UART_5_DATA_BITS;
745 break;
746 case CS6:
747 config->bDataBits = TI_UART_6_DATA_BITS;
748 break;
749 case CS7:
750 config->bDataBits = TI_UART_7_DATA_BITS;
751 break;
752 default:
753 case CS8:
754 config->bDataBits = TI_UART_8_DATA_BITS;
755 break;
756 }
757
758 /* CMSPAR isn't supported by this driver */
759 tty->termios.c_cflag &= ~CMSPAR;
760
761 if (cflag & PARENB) {
762 if (cflag & PARODD) {
763 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
764 config->bParity = TI_UART_ODD_PARITY;
765 } else {
766 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
767 config->bParity = TI_UART_EVEN_PARITY;
768 }
769 } else {
770 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
771 config->bParity = TI_UART_NO_PARITY;
772 }
773
774 if (cflag & CSTOPB)
775 config->bStopBits = TI_UART_2_STOP_BITS;
776 else
777 config->bStopBits = TI_UART_1_STOP_BITS;
778
779 if (cflag & CRTSCTS) {
780 /* RTS flow control must be off to drop RTS for baud rate B0 */
781 if ((cflag & CBAUD) != B0)
782 config->wFlags |= TI_UART_ENABLE_RTS_IN;
783 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
784 } else {
785 ti_restart_read(tport, tty);
786 }
787
788 if (I_IXOFF(tty) || I_IXON(tty)) {
789 config->cXon = START_CHAR(tty);
790 config->cXoff = STOP_CHAR(tty);
791
792 if (I_IXOFF(tty))
793 config->wFlags |= TI_UART_ENABLE_X_IN;
794 else
795 ti_restart_read(tport, tty);
796
797 if (I_IXON(tty))
798 config->wFlags |= TI_UART_ENABLE_X_OUT;
799 }
800
801 baud = tty_get_baud_rate(tty);
802 if (!baud)
803 baud = 9600;
804 if (tport->tp_tdev->td_is_3410)
805 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
806 else
807 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
808
809 /* FIXME: Should calculate resulting baud here and report it back */
810 if ((cflag & CBAUD) != B0)
811 tty_encode_baud_rate(tty, baud, baud);
812
813 dev_dbg(&port->dev,
814 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
815 __func__, baud, config->wBaudRate, config->wFlags,
816 config->bDataBits, config->bParity, config->bStopBits,
817 config->cXon, config->cXoff, config->bUartMode);
818
819 cpu_to_be16s(&config->wBaudRate);
820 cpu_to_be16s(&config->wFlags);
821
822 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
823 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
824 sizeof(*config));
825 if (status)
826 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
827 __func__, port_number, status);
828
829 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
830 mcr = tport->tp_shadow_mcr;
831 /* if baud rate is B0, clear RTS and DTR */
832 if ((cflag & CBAUD) == B0)
833 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
834 status = ti_set_mcr(tport, mcr);
835 if (status)
836 dev_err(&port->dev,
837 "%s - cannot set modem control on port %d, %d\n",
838 __func__, port_number, status);
839
840 kfree(config);
841 }
842
843
844 static int ti_tiocmget(struct tty_struct *tty)
845 {
846 struct usb_serial_port *port = tty->driver_data;
847 struct ti_port *tport = usb_get_serial_port_data(port);
848 unsigned int result;
849 unsigned int msr;
850 unsigned int mcr;
851 unsigned long flags;
852
853 if (tport == NULL)
854 return -ENODEV;
855
856 spin_lock_irqsave(&tport->tp_lock, flags);
857 msr = tport->tp_msr;
858 mcr = tport->tp_shadow_mcr;
859 spin_unlock_irqrestore(&tport->tp_lock, flags);
860
861 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
862 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
863 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
864 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
865 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
866 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
867 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
868
869 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
870
871 return result;
872 }
873
874
875 static int ti_tiocmset(struct tty_struct *tty,
876 unsigned int set, unsigned int clear)
877 {
878 struct usb_serial_port *port = tty->driver_data;
879 struct ti_port *tport = usb_get_serial_port_data(port);
880 unsigned int mcr;
881 unsigned long flags;
882
883 if (tport == NULL)
884 return -ENODEV;
885
886 spin_lock_irqsave(&tport->tp_lock, flags);
887 mcr = tport->tp_shadow_mcr;
888
889 if (set & TIOCM_RTS)
890 mcr |= TI_MCR_RTS;
891 if (set & TIOCM_DTR)
892 mcr |= TI_MCR_DTR;
893 if (set & TIOCM_LOOP)
894 mcr |= TI_MCR_LOOP;
895
896 if (clear & TIOCM_RTS)
897 mcr &= ~TI_MCR_RTS;
898 if (clear & TIOCM_DTR)
899 mcr &= ~TI_MCR_DTR;
900 if (clear & TIOCM_LOOP)
901 mcr &= ~TI_MCR_LOOP;
902 spin_unlock_irqrestore(&tport->tp_lock, flags);
903
904 return ti_set_mcr(tport, mcr);
905 }
906
907
908 static void ti_break(struct tty_struct *tty, int break_state)
909 {
910 struct usb_serial_port *port = tty->driver_data;
911 struct ti_port *tport = usb_get_serial_port_data(port);
912 int status;
913
914 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
915
916 if (tport == NULL)
917 return;
918
919 status = ti_write_byte(port, tport->tp_tdev,
920 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
921 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
922
923 if (status)
924 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
925 }
926
927
928 static void ti_interrupt_callback(struct urb *urb)
929 {
930 struct ti_device *tdev = urb->context;
931 struct usb_serial_port *port;
932 struct usb_serial *serial = tdev->td_serial;
933 struct ti_port *tport;
934 struct device *dev = &urb->dev->dev;
935 unsigned char *data = urb->transfer_buffer;
936 int length = urb->actual_length;
937 int port_number;
938 int function;
939 int status = urb->status;
940 int retval;
941 __u8 msr;
942
943 switch (status) {
944 case 0:
945 break;
946 case -ECONNRESET:
947 case -ENOENT:
948 case -ESHUTDOWN:
949 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
950 tdev->td_urb_error = 1;
951 return;
952 default:
953 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
954 tdev->td_urb_error = 1;
955 goto exit;
956 }
957
958 if (length != 2) {
959 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
960 goto exit;
961 }
962
963 if (data[0] == TI_CODE_HARDWARE_ERROR) {
964 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
965 goto exit;
966 }
967
968 port_number = TI_GET_PORT_FROM_CODE(data[0]);
969 function = TI_GET_FUNC_FROM_CODE(data[0]);
970
971 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
972 __func__, port_number, function, data[1]);
973
974 if (port_number >= serial->num_ports) {
975 dev_err(dev, "%s - bad port number, %d\n",
976 __func__, port_number);
977 goto exit;
978 }
979
980 port = serial->port[port_number];
981
982 tport = usb_get_serial_port_data(port);
983 if (!tport)
984 goto exit;
985
986 switch (function) {
987 case TI_CODE_DATA_ERROR:
988 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
989 __func__, port_number, data[1]);
990 break;
991
992 case TI_CODE_MODEM_STATUS:
993 msr = data[1];
994 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
995 ti_handle_new_msr(tport, msr);
996 break;
997
998 default:
999 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1000 __func__, data[1]);
1001 break;
1002 }
1003
1004 exit:
1005 retval = usb_submit_urb(urb, GFP_ATOMIC);
1006 if (retval)
1007 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1008 __func__, retval);
1009 }
1010
1011
1012 static void ti_bulk_in_callback(struct urb *urb)
1013 {
1014 struct ti_port *tport = urb->context;
1015 struct usb_serial_port *port = tport->tp_port;
1016 struct device *dev = &urb->dev->dev;
1017 int status = urb->status;
1018 int retval = 0;
1019
1020 switch (status) {
1021 case 0:
1022 break;
1023 case -ECONNRESET:
1024 case -ENOENT:
1025 case -ESHUTDOWN:
1026 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1027 tport->tp_tdev->td_urb_error = 1;
1028 return;
1029 default:
1030 dev_err(dev, "%s - nonzero urb status, %d\n",
1031 __func__, status);
1032 tport->tp_tdev->td_urb_error = 1;
1033 }
1034
1035 if (status == -EPIPE)
1036 goto exit;
1037
1038 if (status) {
1039 dev_err(dev, "%s - stopping read!\n", __func__);
1040 return;
1041 }
1042
1043 if (urb->actual_length) {
1044 usb_serial_debug_data(dev, __func__, urb->actual_length,
1045 urb->transfer_buffer);
1046
1047 if (!tport->tp_is_open)
1048 dev_dbg(dev, "%s - port closed, dropping data\n",
1049 __func__);
1050 else
1051 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1052 spin_lock(&tport->tp_lock);
1053 port->icount.rx += urb->actual_length;
1054 spin_unlock(&tport->tp_lock);
1055 }
1056
1057 exit:
1058 /* continue to read unless stopping */
1059 spin_lock(&tport->tp_lock);
1060 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1061 retval = usb_submit_urb(urb, GFP_ATOMIC);
1062 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1063 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1064
1065 spin_unlock(&tport->tp_lock);
1066 if (retval)
1067 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1068 __func__, retval);
1069 }
1070
1071
1072 static void ti_bulk_out_callback(struct urb *urb)
1073 {
1074 struct ti_port *tport = urb->context;
1075 struct usb_serial_port *port = tport->tp_port;
1076 int status = urb->status;
1077
1078 tport->tp_write_urb_in_use = 0;
1079
1080 switch (status) {
1081 case 0:
1082 break;
1083 case -ECONNRESET:
1084 case -ENOENT:
1085 case -ESHUTDOWN:
1086 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1087 tport->tp_tdev->td_urb_error = 1;
1088 return;
1089 default:
1090 dev_err_console(port, "%s - nonzero urb status, %d\n",
1091 __func__, status);
1092 tport->tp_tdev->td_urb_error = 1;
1093 }
1094
1095 /* send any buffered data */
1096 ti_send(tport);
1097 }
1098
1099
1100 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1101 int length)
1102 {
1103 int cnt;
1104
1105 do {
1106 cnt = tty_insert_flip_string(&port->port, data, length);
1107 if (cnt < length) {
1108 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1109 __func__, length - cnt);
1110 if (cnt == 0)
1111 break;
1112 }
1113 tty_flip_buffer_push(&port->port);
1114 data += cnt;
1115 length -= cnt;
1116 } while (length > 0);
1117 }
1118
1119
1120 static void ti_send(struct ti_port *tport)
1121 {
1122 int count, result;
1123 struct usb_serial_port *port = tport->tp_port;
1124 unsigned long flags;
1125
1126 spin_lock_irqsave(&tport->tp_lock, flags);
1127
1128 if (tport->tp_write_urb_in_use)
1129 goto unlock;
1130
1131 count = kfifo_out(&port->write_fifo,
1132 port->write_urb->transfer_buffer,
1133 port->bulk_out_size);
1134
1135 if (count == 0)
1136 goto unlock;
1137
1138 tport->tp_write_urb_in_use = 1;
1139
1140 spin_unlock_irqrestore(&tport->tp_lock, flags);
1141
1142 usb_serial_debug_data(&port->dev, __func__, count,
1143 port->write_urb->transfer_buffer);
1144
1145 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1146 usb_sndbulkpipe(port->serial->dev,
1147 port->bulk_out_endpointAddress),
1148 port->write_urb->transfer_buffer, count,
1149 ti_bulk_out_callback, tport);
1150
1151 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1152 if (result) {
1153 dev_err_console(port, "%s - submit write urb failed, %d\n",
1154 __func__, result);
1155 tport->tp_write_urb_in_use = 0;
1156 /* TODO: reschedule ti_send */
1157 } else {
1158 spin_lock_irqsave(&tport->tp_lock, flags);
1159 port->icount.tx += count;
1160 spin_unlock_irqrestore(&tport->tp_lock, flags);
1161 }
1162
1163 /* more room in the buffer for new writes, wakeup */
1164 tty_port_tty_wakeup(&port->port);
1165
1166 return;
1167 unlock:
1168 spin_unlock_irqrestore(&tport->tp_lock, flags);
1169 return;
1170 }
1171
1172
1173 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1174 {
1175 unsigned long flags;
1176 int status;
1177
1178 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1179 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1180 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1181
1182 spin_lock_irqsave(&tport->tp_lock, flags);
1183 if (!status)
1184 tport->tp_shadow_mcr = mcr;
1185 spin_unlock_irqrestore(&tport->tp_lock, flags);
1186
1187 return status;
1188 }
1189
1190
1191 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1192 {
1193 int size, status;
1194 struct ti_device *tdev = tport->tp_tdev;
1195 struct usb_serial_port *port = tport->tp_port;
1196 int port_number = port->port_number;
1197 struct ti_port_status *data;
1198
1199 size = sizeof(struct ti_port_status);
1200 data = kmalloc(size, GFP_KERNEL);
1201 if (!data)
1202 return -ENOMEM;
1203
1204 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1205 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1206 if (status) {
1207 dev_err(&port->dev,
1208 "%s - get port status command failed, %d\n",
1209 __func__, status);
1210 goto free_data;
1211 }
1212
1213 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1214
1215 *lsr = data->bLSR;
1216
1217 free_data:
1218 kfree(data);
1219 return status;
1220 }
1221
1222
1223 static int ti_get_serial_info(struct ti_port *tport,
1224 struct serial_struct __user *ret_arg)
1225 {
1226 struct usb_serial_port *port = tport->tp_port;
1227 struct serial_struct ret_serial;
1228 unsigned cwait;
1229
1230 if (!ret_arg)
1231 return -EFAULT;
1232
1233 cwait = port->port.closing_wait;
1234 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1235 cwait = jiffies_to_msecs(cwait) / 10;
1236
1237 memset(&ret_serial, 0, sizeof(ret_serial));
1238
1239 ret_serial.type = PORT_16550A;
1240 ret_serial.line = port->minor;
1241 ret_serial.port = port->port_number;
1242 ret_serial.flags = tport->tp_flags;
1243 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1244 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1245 ret_serial.closing_wait = cwait;
1246
1247 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1248 return -EFAULT;
1249
1250 return 0;
1251 }
1252
1253
1254 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1255 struct serial_struct __user *new_arg)
1256 {
1257 struct serial_struct new_serial;
1258 unsigned cwait;
1259
1260 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1261 return -EFAULT;
1262
1263 cwait = new_serial.closing_wait;
1264 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1265 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1266
1267 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1268 tport->tp_port->port.closing_wait = cwait;
1269
1270 return 0;
1271 }
1272
1273
1274 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1275 {
1276 struct async_icount *icount;
1277 struct tty_struct *tty;
1278 unsigned long flags;
1279
1280 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1281
1282 if (msr & TI_MSR_DELTA_MASK) {
1283 spin_lock_irqsave(&tport->tp_lock, flags);
1284 icount = &tport->tp_port->icount;
1285 if (msr & TI_MSR_DELTA_CTS)
1286 icount->cts++;
1287 if (msr & TI_MSR_DELTA_DSR)
1288 icount->dsr++;
1289 if (msr & TI_MSR_DELTA_CD)
1290 icount->dcd++;
1291 if (msr & TI_MSR_DELTA_RI)
1292 icount->rng++;
1293 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1294 spin_unlock_irqrestore(&tport->tp_lock, flags);
1295 }
1296
1297 tport->tp_msr = msr & TI_MSR_MASK;
1298
1299 /* handle CTS flow control */
1300 tty = tty_port_tty_get(&tport->tp_port->port);
1301 if (tty && C_CRTSCTS(tty)) {
1302 if (msr & TI_MSR_CTS)
1303 tty_wakeup(tty);
1304 }
1305 tty_kref_put(tty);
1306 }
1307
1308
1309 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1310 {
1311 unsigned long flags;
1312
1313 spin_lock_irqsave(&tport->tp_lock, flags);
1314
1315 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1316 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1317
1318 spin_unlock_irqrestore(&tport->tp_lock, flags);
1319 }
1320
1321
1322 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1323 {
1324 struct urb *urb;
1325 int status = 0;
1326 unsigned long flags;
1327
1328 spin_lock_irqsave(&tport->tp_lock, flags);
1329
1330 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1331 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1332 urb = tport->tp_port->read_urb;
1333 spin_unlock_irqrestore(&tport->tp_lock, flags);
1334 urb->context = tport;
1335 status = usb_submit_urb(urb, GFP_KERNEL);
1336 } else {
1337 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1338 spin_unlock_irqrestore(&tport->tp_lock, flags);
1339 }
1340
1341 return status;
1342 }
1343
1344
1345 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1346 __u16 moduleid, __u16 value, __u8 *data, int size)
1347 {
1348 int status;
1349
1350 status = usb_control_msg(tdev->td_serial->dev,
1351 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1352 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1353 value, moduleid, data, size, 1000);
1354
1355 if (status < 0)
1356 return status;
1357
1358 return 0;
1359 }
1360
1361
1362 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1363 __u16 moduleid, __u16 value, __u8 *data, int size)
1364 {
1365 int status;
1366
1367 status = usb_control_msg(tdev->td_serial->dev,
1368 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1369 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1370 value, moduleid, data, size, 1000);
1371
1372 if (status == size)
1373 status = 0;
1374 else if (status >= 0)
1375 status = -ECOMM;
1376
1377 return status;
1378 }
1379
1380
1381 static int ti_write_byte(struct usb_serial_port *port,
1382 struct ti_device *tdev, unsigned long addr,
1383 __u8 mask, __u8 byte)
1384 {
1385 int status;
1386 unsigned int size;
1387 struct ti_write_data_bytes *data;
1388
1389 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1390 addr, mask, byte);
1391
1392 size = sizeof(struct ti_write_data_bytes) + 2;
1393 data = kmalloc(size, GFP_KERNEL);
1394 if (!data)
1395 return -ENOMEM;
1396
1397 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1398 data->bDataType = TI_RW_DATA_BYTE;
1399 data->bDataCounter = 1;
1400 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1401 data->wBaseAddrLo = cpu_to_be16(addr);
1402 data->bData[0] = mask;
1403 data->bData[1] = byte;
1404
1405 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1406 (__u8 *)data, size);
1407
1408 if (status < 0)
1409 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1410
1411 kfree(data);
1412
1413 return status;
1414 }
1415
1416 static int ti_do_download(struct usb_device *dev, int pipe,
1417 u8 *buffer, int size)
1418 {
1419 int pos;
1420 u8 cs = 0;
1421 int done;
1422 struct ti_firmware_header *header;
1423 int status = 0;
1424 int len;
1425
1426 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1427 cs = (__u8)(cs + buffer[pos]);
1428
1429 header = (struct ti_firmware_header *)buffer;
1430 header->wLength = cpu_to_le16((__u16)(size
1431 - sizeof(struct ti_firmware_header)));
1432 header->bCheckSum = cs;
1433
1434 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1435 for (pos = 0; pos < size; pos += done) {
1436 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1437 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1438 &done, 1000);
1439 if (status)
1440 break;
1441 }
1442 return status;
1443 }
1444
1445 static int ti_download_firmware(struct ti_device *tdev)
1446 {
1447 int status;
1448 int buffer_size;
1449 __u8 *buffer;
1450 struct usb_device *dev = tdev->td_serial->dev;
1451 unsigned int pipe = usb_sndbulkpipe(dev,
1452 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1453 const struct firmware *fw_p;
1454 char buf[32];
1455
1456 /* try ID specific firmware first, then try generic firmware */
1457 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1458 le16_to_cpu(dev->descriptor.idVendor),
1459 le16_to_cpu(dev->descriptor.idProduct));
1460 status = request_firmware(&fw_p, buf, &dev->dev);
1461
1462 if (status != 0) {
1463 buf[0] = '\0';
1464 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1465 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1466 case MTS_CDMA_PRODUCT_ID:
1467 strcpy(buf, "mts_cdma.fw");
1468 break;
1469 case MTS_GSM_PRODUCT_ID:
1470 strcpy(buf, "mts_gsm.fw");
1471 break;
1472 case MTS_EDGE_PRODUCT_ID:
1473 strcpy(buf, "mts_edge.fw");
1474 break;
1475 case MTS_MT9234MU_PRODUCT_ID:
1476 strcpy(buf, "mts_mt9234mu.fw");
1477 break;
1478 case MTS_MT9234ZBA_PRODUCT_ID:
1479 strcpy(buf, "mts_mt9234zba.fw");
1480 break;
1481 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1482 strcpy(buf, "mts_mt9234zba.fw");
1483 break; }
1484 }
1485 if (buf[0] == '\0') {
1486 if (tdev->td_is_3410)
1487 strcpy(buf, "ti_3410.fw");
1488 else
1489 strcpy(buf, "ti_5052.fw");
1490 }
1491 status = request_firmware(&fw_p, buf, &dev->dev);
1492 }
1493 if (status) {
1494 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1495 return -ENOENT;
1496 }
1497 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1498 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1499 release_firmware(fw_p);
1500 return -ENOENT;
1501 }
1502
1503 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1504 buffer = kmalloc(buffer_size, GFP_KERNEL);
1505 if (buffer) {
1506 memcpy(buffer, fw_p->data, fw_p->size);
1507 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1508 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1509 kfree(buffer);
1510 } else {
1511 status = -ENOMEM;
1512 }
1513 release_firmware(fw_p);
1514 if (status) {
1515 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1516 __func__, status);
1517 return status;
1518 }
1519
1520 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1521
1522 return 0;
1523 }
Linux with added FPC-III support