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mmc: rtsx_pci: Enable MMC_CAP_ERASE to allow erase/discard/trim requests
[linux/fpc-iii.git] / drivers / usb / serial / ti_usb_3410_5052.c
blobe7dbbef2af2a57cf3560af2b76e6b94e3d2d0144
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 bool td_rs485_only;
84 int td_urb_error;
85 };
86
87
88 /* Function Declarations */
89
90 static int ti_startup(struct usb_serial *serial);
91 static void ti_release(struct usb_serial *serial);
92 static int ti_port_probe(struct usb_serial_port *port);
93 static int ti_port_remove(struct usb_serial_port *port);
94 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
95 static void ti_close(struct usb_serial_port *port);
96 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
97 const unsigned char *data, int count);
98 static int ti_write_room(struct tty_struct *tty);
99 static int ti_chars_in_buffer(struct tty_struct *tty);
100 static bool ti_tx_empty(struct usb_serial_port *port);
101 static void ti_throttle(struct tty_struct *tty);
102 static void ti_unthrottle(struct tty_struct *tty);
103 static int ti_ioctl(struct tty_struct *tty,
104 unsigned int cmd, unsigned long arg);
105 static void ti_set_termios(struct tty_struct *tty,
106 struct usb_serial_port *port, struct ktermios *old_termios);
107 static int ti_tiocmget(struct tty_struct *tty);
108 static int ti_tiocmset(struct tty_struct *tty,
109 unsigned int set, unsigned int clear);
110 static void ti_break(struct tty_struct *tty, int break_state);
111 static void ti_interrupt_callback(struct urb *urb);
112 static void ti_bulk_in_callback(struct urb *urb);
113 static void ti_bulk_out_callback(struct urb *urb);
114
115 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
116 int length);
117 static void ti_send(struct ti_port *tport);
118 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
119 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
120 static int ti_get_serial_info(struct ti_port *tport,
121 struct serial_struct __user *ret_arg);
122 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
123 struct serial_struct __user *new_arg);
124 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
125
126 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
127 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
128
129 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
130 __u16 moduleid, __u16 value, __u8 *data, int size);
131 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
132 __u16 moduleid, __u16 value, __u8 *data, int size);
133
134 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
135 unsigned long addr, __u8 mask, __u8 byte);
136
137 static int ti_download_firmware(struct ti_device *tdev);
138
139
140 /* Data */
141
142 /* module parameters */
143 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
144
145 /* supported devices */
146 static const struct usb_device_id ti_id_table_3410[] = {
147 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
148 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
149 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
150 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
151 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
152 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
153 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
154 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
155 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
156 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
157 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
158 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
159 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
160 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
161 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
162 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
163 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
164 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
165 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
166 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
167 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
168 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
169 { } /* terminator */
170 };
171
172 static const struct usb_device_id ti_id_table_5052[] = {
173 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
174 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
175 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
176 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
177 { } /* terminator */
178 };
179
180 static const struct usb_device_id ti_id_table_combined[] = {
181 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
182 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
183 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
184 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
185 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
186 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
187 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
188 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
189 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
190 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
191 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
192 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
193 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
194 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
195 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
196 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
197 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
198 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
199 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
200 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
201 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
202 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
203 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
204 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
205 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
206 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
207 { } /* terminator */
208 };
209
210 static struct usb_serial_driver ti_1port_device = {
211 .driver = {
212 .owner = THIS_MODULE,
213 .name = "ti_usb_3410_5052_1",
214 },
215 .description = "TI USB 3410 1 port adapter",
216 .id_table = ti_id_table_3410,
217 .num_ports = 1,
218 .attach = ti_startup,
219 .release = ti_release,
220 .port_probe = ti_port_probe,
221 .port_remove = ti_port_remove,
222 .open = ti_open,
223 .close = ti_close,
224 .write = ti_write,
225 .write_room = ti_write_room,
226 .chars_in_buffer = ti_chars_in_buffer,
227 .tx_empty = ti_tx_empty,
228 .throttle = ti_throttle,
229 .unthrottle = ti_unthrottle,
230 .ioctl = ti_ioctl,
231 .set_termios = ti_set_termios,
232 .tiocmget = ti_tiocmget,
233 .tiocmset = ti_tiocmset,
234 .tiocmiwait = usb_serial_generic_tiocmiwait,
235 .get_icount = usb_serial_generic_get_icount,
236 .break_ctl = ti_break,
237 .read_int_callback = ti_interrupt_callback,
238 .read_bulk_callback = ti_bulk_in_callback,
239 .write_bulk_callback = ti_bulk_out_callback,
240 };
241
242 static struct usb_serial_driver ti_2port_device = {
243 .driver = {
244 .owner = THIS_MODULE,
245 .name = "ti_usb_3410_5052_2",
246 },
247 .description = "TI USB 5052 2 port adapter",
248 .id_table = ti_id_table_5052,
249 .num_ports = 2,
250 .attach = ti_startup,
251 .release = ti_release,
252 .port_probe = ti_port_probe,
253 .port_remove = ti_port_remove,
254 .open = ti_open,
255 .close = ti_close,
256 .write = ti_write,
257 .write_room = ti_write_room,
258 .chars_in_buffer = ti_chars_in_buffer,
259 .tx_empty = ti_tx_empty,
260 .throttle = ti_throttle,
261 .unthrottle = ti_unthrottle,
262 .ioctl = ti_ioctl,
263 .set_termios = ti_set_termios,
264 .tiocmget = ti_tiocmget,
265 .tiocmset = ti_tiocmset,
266 .tiocmiwait = usb_serial_generic_tiocmiwait,
267 .get_icount = usb_serial_generic_get_icount,
268 .break_ctl = ti_break,
269 .read_int_callback = ti_interrupt_callback,
270 .read_bulk_callback = ti_bulk_in_callback,
271 .write_bulk_callback = ti_bulk_out_callback,
272 };
273
274 static struct usb_serial_driver * const serial_drivers[] = {
275 &ti_1port_device, &ti_2port_device, NULL
276 };
277
278 /* Module */
279
280 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
281 MODULE_DESCRIPTION(TI_DRIVER_DESC);
282 MODULE_LICENSE("GPL");
283
284 MODULE_FIRMWARE("ti_3410.fw");
285 MODULE_FIRMWARE("ti_5052.fw");
286 MODULE_FIRMWARE("mts_cdma.fw");
287 MODULE_FIRMWARE("mts_gsm.fw");
288 MODULE_FIRMWARE("mts_edge.fw");
289 MODULE_FIRMWARE("mts_mt9234mu.fw");
290 MODULE_FIRMWARE("mts_mt9234zba.fw");
291 MODULE_FIRMWARE("moxa/moxa-1110.fw");
292 MODULE_FIRMWARE("moxa/moxa-1130.fw");
293 MODULE_FIRMWARE("moxa/moxa-1131.fw");
294 MODULE_FIRMWARE("moxa/moxa-1150.fw");
295 MODULE_FIRMWARE("moxa/moxa-1151.fw");
296
297 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
298 MODULE_PARM_DESC(closing_wait,
299 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
300
301 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
302
303 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
304
305 /* Functions */
306
307 static int ti_startup(struct usb_serial *serial)
308 {
309 struct ti_device *tdev;
310 struct usb_device *dev = serial->dev;
311 struct usb_host_interface *cur_altsetting;
312 int num_endpoints;
313 u16 vid, pid;
314 int status;
315
316 dev_dbg(&dev->dev,
317 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
318 __func__, le16_to_cpu(dev->descriptor.idProduct),
319 dev->descriptor.bNumConfigurations,
320 dev->actconfig->desc.bConfigurationValue);
321
322 /* create device structure */
323 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
324 if (!tdev)
325 return -ENOMEM;
326
327 mutex_init(&tdev->td_open_close_lock);
328 tdev->td_serial = serial;
329 usb_set_serial_data(serial, tdev);
330
331 /* determine device type */
332 if (serial->type == &ti_1port_device)
333 tdev->td_is_3410 = 1;
334 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
335 tdev->td_is_3410 ? "3410" : "5052");
336
337 vid = le16_to_cpu(dev->descriptor.idVendor);
338 pid = le16_to_cpu(dev->descriptor.idProduct);
339 if (vid == MXU1_VENDOR_ID) {
340 switch (pid) {
341 case MXU1_1130_PRODUCT_ID:
342 case MXU1_1131_PRODUCT_ID:
343 tdev->td_rs485_only = true;
344 break;
345 }
346 }
347
348 cur_altsetting = serial->interface->cur_altsetting;
349 num_endpoints = cur_altsetting->desc.bNumEndpoints;
350
351 /* if we have only 1 configuration and 1 endpoint, download firmware */
352 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
353 status = ti_download_firmware(tdev);
354
355 if (status != 0)
356 goto free_tdev;
357
358 /* 3410 must be reset, 5052 resets itself */
359 if (tdev->td_is_3410) {
360 msleep_interruptible(100);
361 usb_reset_device(dev);
362 }
363
364 status = -ENODEV;
365 goto free_tdev;
366 }
367
368 /* the second configuration must be set */
369 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
370 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
371 status = status ? status : -ENODEV;
372 goto free_tdev;
373 }
374
375 return 0;
376
377 free_tdev:
378 kfree(tdev);
379 usb_set_serial_data(serial, NULL);
380 return status;
381 }
382
383
384 static void ti_release(struct usb_serial *serial)
385 {
386 struct ti_device *tdev = usb_get_serial_data(serial);
387
388 kfree(tdev);
389 }
390
391 static int ti_port_probe(struct usb_serial_port *port)
392 {
393 struct ti_port *tport;
394
395 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
396 if (!tport)
397 return -ENOMEM;
398
399 spin_lock_init(&tport->tp_lock);
400 if (port == port->serial->port[0])
401 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
402 else
403 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
404 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
405 tport->tp_port = port;
406 tport->tp_tdev = usb_get_serial_data(port->serial);
407
408 if (tport->tp_tdev->td_rs485_only)
409 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
410 else
411 tport->tp_uart_mode = TI_UART_232;
412
413 usb_set_serial_port_data(port, tport);
414
415 port->port.drain_delay = 3;
416
417 return 0;
418 }
419
420 static int ti_port_remove(struct usb_serial_port *port)
421 {
422 struct ti_port *tport;
423
424 tport = usb_get_serial_port_data(port);
425 kfree(tport);
426
427 return 0;
428 }
429
430 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
431 {
432 struct ti_port *tport = usb_get_serial_port_data(port);
433 struct ti_device *tdev;
434 struct usb_device *dev;
435 struct urb *urb;
436 int port_number;
437 int status;
438 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
439 TI_PIPE_TIMEOUT_ENABLE |
440 (TI_TRANSFER_TIMEOUT << 2));
441
442 if (tport == NULL)
443 return -ENODEV;
444
445 dev = port->serial->dev;
446 tdev = tport->tp_tdev;
447
448 /* only one open on any port on a device at a time */
449 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
450 return -ERESTARTSYS;
451
452 port_number = port->port_number;
453
454 tport->tp_msr = 0;
455 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
456
457 /* start interrupt urb the first time a port is opened on this device */
458 if (tdev->td_open_port_count == 0) {
459 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
460 urb = tdev->td_serial->port[0]->interrupt_in_urb;
461 if (!urb) {
462 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
463 status = -EINVAL;
464 goto release_lock;
465 }
466 urb->context = tdev;
467 status = usb_submit_urb(urb, GFP_KERNEL);
468 if (status) {
469 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
470 goto release_lock;
471 }
472 }
473
474 if (tty)
475 ti_set_termios(tty, port, &tty->termios);
476
477 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
478 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
479 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
480 if (status) {
481 dev_err(&port->dev, "%s - cannot send open command, %d\n",
482 __func__, status);
483 goto unlink_int_urb;
484 }
485
486 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
487 status = ti_command_out_sync(tdev, TI_START_PORT,
488 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
489 if (status) {
490 dev_err(&port->dev, "%s - cannot send start command, %d\n",
491 __func__, status);
492 goto unlink_int_urb;
493 }
494
495 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
496 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
497 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
498 if (status) {
499 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
500 __func__, status);
501 goto unlink_int_urb;
502 }
503 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
504 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
505 if (status) {
506 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
507 __func__, status);
508 goto unlink_int_urb;
509 }
510
511 /* reset the data toggle on the bulk endpoints to work around bug in
512 * host controllers where things get out of sync some times */
513 usb_clear_halt(dev, port->write_urb->pipe);
514 usb_clear_halt(dev, port->read_urb->pipe);
515
516 if (tty)
517 ti_set_termios(tty, port, &tty->termios);
518
519 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
520 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
521 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
522 if (status) {
523 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
524 __func__, status);
525 goto unlink_int_urb;
526 }
527
528 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
529 status = ti_command_out_sync(tdev, TI_START_PORT,
530 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
531 if (status) {
532 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
533 __func__, status);
534 goto unlink_int_urb;
535 }
536
537 /* start read urb */
538 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
539 urb = port->read_urb;
540 if (!urb) {
541 dev_err(&port->dev, "%s - no read urb\n", __func__);
542 status = -EINVAL;
543 goto unlink_int_urb;
544 }
545 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
546 urb->context = tport;
547 status = usb_submit_urb(urb, GFP_KERNEL);
548 if (status) {
549 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
550 __func__, status);
551 goto unlink_int_urb;
552 }
553
554 tport->tp_is_open = 1;
555 ++tdev->td_open_port_count;
556
557 goto release_lock;
558
559 unlink_int_urb:
560 if (tdev->td_open_port_count == 0)
561 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
562 release_lock:
563 mutex_unlock(&tdev->td_open_close_lock);
564 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
565 return status;
566 }
567
568
569 static void ti_close(struct usb_serial_port *port)
570 {
571 struct ti_device *tdev;
572 struct ti_port *tport;
573 int port_number;
574 int status;
575 int do_unlock;
576 unsigned long flags;
577
578 tdev = usb_get_serial_data(port->serial);
579 tport = usb_get_serial_port_data(port);
580 if (tdev == NULL || tport == NULL)
581 return;
582
583 tport->tp_is_open = 0;
584
585 usb_kill_urb(port->read_urb);
586 usb_kill_urb(port->write_urb);
587 tport->tp_write_urb_in_use = 0;
588 spin_lock_irqsave(&tport->tp_lock, flags);
589 kfifo_reset_out(&port->write_fifo);
590 spin_unlock_irqrestore(&tport->tp_lock, flags);
591
592 port_number = port->port_number;
593
594 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
595 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
596 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
597 if (status)
598 dev_err(&port->dev,
599 "%s - cannot send close port command, %d\n"
600 , __func__, status);
601
602 /* if mutex_lock is interrupted, continue anyway */
603 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
604 --tport->tp_tdev->td_open_port_count;
605 if (tport->tp_tdev->td_open_port_count <= 0) {
606 /* last port is closed, shut down interrupt urb */
607 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
608 tport->tp_tdev->td_open_port_count = 0;
609 }
610 if (do_unlock)
611 mutex_unlock(&tdev->td_open_close_lock);
612 }
613
614
615 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
616 const unsigned char *data, int count)
617 {
618 struct ti_port *tport = usb_get_serial_port_data(port);
619
620 if (count == 0) {
621 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
622 return 0;
623 }
624
625 if (tport == NULL || !tport->tp_is_open)
626 return -ENODEV;
627
628 count = kfifo_in_locked(&port->write_fifo, data, count,
629 &tport->tp_lock);
630 ti_send(tport);
631
632 return count;
633 }
634
635
636 static int ti_write_room(struct tty_struct *tty)
637 {
638 struct usb_serial_port *port = tty->driver_data;
639 struct ti_port *tport = usb_get_serial_port_data(port);
640 int room = 0;
641 unsigned long flags;
642
643 if (tport == NULL)
644 return 0;
645
646 spin_lock_irqsave(&tport->tp_lock, flags);
647 room = kfifo_avail(&port->write_fifo);
648 spin_unlock_irqrestore(&tport->tp_lock, flags);
649
650 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
651 return room;
652 }
653
654
655 static int ti_chars_in_buffer(struct tty_struct *tty)
656 {
657 struct usb_serial_port *port = tty->driver_data;
658 struct ti_port *tport = usb_get_serial_port_data(port);
659 int chars = 0;
660 unsigned long flags;
661
662 if (tport == NULL)
663 return 0;
664
665 spin_lock_irqsave(&tport->tp_lock, flags);
666 chars = kfifo_len(&port->write_fifo);
667 spin_unlock_irqrestore(&tport->tp_lock, flags);
668
669 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
670 return chars;
671 }
672
673 static bool ti_tx_empty(struct usb_serial_port *port)
674 {
675 struct ti_port *tport = usb_get_serial_port_data(port);
676 int ret;
677 u8 lsr;
678
679 ret = ti_get_lsr(tport, &lsr);
680 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
681 return false;
682
683 return true;
684 }
685
686 static void ti_throttle(struct tty_struct *tty)
687 {
688 struct usb_serial_port *port = tty->driver_data;
689 struct ti_port *tport = usb_get_serial_port_data(port);
690
691 if (tport == NULL)
692 return;
693
694 if (I_IXOFF(tty) || C_CRTSCTS(tty))
695 ti_stop_read(tport, tty);
696
697 }
698
699
700 static void ti_unthrottle(struct tty_struct *tty)
701 {
702 struct usb_serial_port *port = tty->driver_data;
703 struct ti_port *tport = usb_get_serial_port_data(port);
704 int status;
705
706 if (tport == NULL)
707 return;
708
709 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
710 status = ti_restart_read(tport, tty);
711 if (status)
712 dev_err(&port->dev, "%s - cannot restart read, %d\n",
713 __func__, status);
714 }
715 }
716
717 static int ti_ioctl(struct tty_struct *tty,
718 unsigned int cmd, unsigned long arg)
719 {
720 struct usb_serial_port *port = tty->driver_data;
721 struct ti_port *tport = usb_get_serial_port_data(port);
722
723 if (tport == NULL)
724 return -ENODEV;
725
726 switch (cmd) {
727 case TIOCGSERIAL:
728 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
729 return ti_get_serial_info(tport,
730 (struct serial_struct __user *)arg);
731 case TIOCSSERIAL:
732 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
733 return ti_set_serial_info(tty, tport,
734 (struct serial_struct __user *)arg);
735 }
736 return -ENOIOCTLCMD;
737 }
738
739
740 static void ti_set_termios(struct tty_struct *tty,
741 struct usb_serial_port *port, struct ktermios *old_termios)
742 {
743 struct ti_port *tport = usb_get_serial_port_data(port);
744 struct ti_uart_config *config;
745 tcflag_t cflag, iflag;
746 int baud;
747 int status;
748 int port_number = port->port_number;
749 unsigned int mcr;
750
751 cflag = tty->termios.c_cflag;
752 iflag = tty->termios.c_iflag;
753
754 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
755 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
756 old_termios->c_cflag, old_termios->c_iflag);
757
758 if (tport == NULL)
759 return;
760
761 config = kmalloc(sizeof(*config), GFP_KERNEL);
762 if (!config)
763 return;
764
765 config->wFlags = 0;
766
767 /* these flags must be set */
768 config->wFlags |= TI_UART_ENABLE_MS_INTS;
769 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
770 config->bUartMode = (__u8)(tport->tp_uart_mode);
771
772 switch (cflag & CSIZE) {
773 case CS5:
774 config->bDataBits = TI_UART_5_DATA_BITS;
775 break;
776 case CS6:
777 config->bDataBits = TI_UART_6_DATA_BITS;
778 break;
779 case CS7:
780 config->bDataBits = TI_UART_7_DATA_BITS;
781 break;
782 default:
783 case CS8:
784 config->bDataBits = TI_UART_8_DATA_BITS;
785 break;
786 }
787
788 /* CMSPAR isn't supported by this driver */
789 tty->termios.c_cflag &= ~CMSPAR;
790
791 if (cflag & PARENB) {
792 if (cflag & PARODD) {
793 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
794 config->bParity = TI_UART_ODD_PARITY;
795 } else {
796 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
797 config->bParity = TI_UART_EVEN_PARITY;
798 }
799 } else {
800 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
801 config->bParity = TI_UART_NO_PARITY;
802 }
803
804 if (cflag & CSTOPB)
805 config->bStopBits = TI_UART_2_STOP_BITS;
806 else
807 config->bStopBits = TI_UART_1_STOP_BITS;
808
809 if (cflag & CRTSCTS) {
810 /* RTS flow control must be off to drop RTS for baud rate B0 */
811 if ((cflag & CBAUD) != B0)
812 config->wFlags |= TI_UART_ENABLE_RTS_IN;
813 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
814 } else {
815 ti_restart_read(tport, tty);
816 }
817
818 if (I_IXOFF(tty) || I_IXON(tty)) {
819 config->cXon = START_CHAR(tty);
820 config->cXoff = STOP_CHAR(tty);
821
822 if (I_IXOFF(tty))
823 config->wFlags |= TI_UART_ENABLE_X_IN;
824 else
825 ti_restart_read(tport, tty);
826
827 if (I_IXON(tty))
828 config->wFlags |= TI_UART_ENABLE_X_OUT;
829 }
830
831 baud = tty_get_baud_rate(tty);
832 if (!baud)
833 baud = 9600;
834 if (tport->tp_tdev->td_is_3410)
835 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
836 else
837 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
838
839 /* FIXME: Should calculate resulting baud here and report it back */
840 if ((cflag & CBAUD) != B0)
841 tty_encode_baud_rate(tty, baud, baud);
842
843 dev_dbg(&port->dev,
844 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
845 __func__, baud, config->wBaudRate, config->wFlags,
846 config->bDataBits, config->bParity, config->bStopBits,
847 config->cXon, config->cXoff, config->bUartMode);
848
849 cpu_to_be16s(&config->wBaudRate);
850 cpu_to_be16s(&config->wFlags);
851
852 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
853 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
854 sizeof(*config));
855 if (status)
856 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
857 __func__, port_number, status);
858
859 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
860 mcr = tport->tp_shadow_mcr;
861 /* if baud rate is B0, clear RTS and DTR */
862 if ((cflag & CBAUD) == B0)
863 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
864 status = ti_set_mcr(tport, mcr);
865 if (status)
866 dev_err(&port->dev,
867 "%s - cannot set modem control on port %d, %d\n",
868 __func__, port_number, status);
869
870 kfree(config);
871 }
872
873
874 static int ti_tiocmget(struct tty_struct *tty)
875 {
876 struct usb_serial_port *port = tty->driver_data;
877 struct ti_port *tport = usb_get_serial_port_data(port);
878 unsigned int result;
879 unsigned int msr;
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 msr = tport->tp_msr;
888 mcr = tport->tp_shadow_mcr;
889 spin_unlock_irqrestore(&tport->tp_lock, flags);
890
891 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
892 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
893 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
894 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
895 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
896 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
897 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
898
899 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
900
901 return result;
902 }
903
904
905 static int ti_tiocmset(struct tty_struct *tty,
906 unsigned int set, unsigned int clear)
907 {
908 struct usb_serial_port *port = tty->driver_data;
909 struct ti_port *tport = usb_get_serial_port_data(port);
910 unsigned int mcr;
911 unsigned long flags;
912
913 if (tport == NULL)
914 return -ENODEV;
915
916 spin_lock_irqsave(&tport->tp_lock, flags);
917 mcr = tport->tp_shadow_mcr;
918
919 if (set & TIOCM_RTS)
920 mcr |= TI_MCR_RTS;
921 if (set & TIOCM_DTR)
922 mcr |= TI_MCR_DTR;
923 if (set & TIOCM_LOOP)
924 mcr |= TI_MCR_LOOP;
925
926 if (clear & TIOCM_RTS)
927 mcr &= ~TI_MCR_RTS;
928 if (clear & TIOCM_DTR)
929 mcr &= ~TI_MCR_DTR;
930 if (clear & TIOCM_LOOP)
931 mcr &= ~TI_MCR_LOOP;
932 spin_unlock_irqrestore(&tport->tp_lock, flags);
933
934 return ti_set_mcr(tport, mcr);
935 }
936
937
938 static void ti_break(struct tty_struct *tty, int break_state)
939 {
940 struct usb_serial_port *port = tty->driver_data;
941 struct ti_port *tport = usb_get_serial_port_data(port);
942 int status;
943
944 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
945
946 if (tport == NULL)
947 return;
948
949 status = ti_write_byte(port, tport->tp_tdev,
950 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
951 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
952
953 if (status)
954 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
955 }
956
957
958 static void ti_interrupt_callback(struct urb *urb)
959 {
960 struct ti_device *tdev = urb->context;
961 struct usb_serial_port *port;
962 struct usb_serial *serial = tdev->td_serial;
963 struct ti_port *tport;
964 struct device *dev = &urb->dev->dev;
965 unsigned char *data = urb->transfer_buffer;
966 int length = urb->actual_length;
967 int port_number;
968 int function;
969 int status = urb->status;
970 int retval;
971 __u8 msr;
972
973 switch (status) {
974 case 0:
975 break;
976 case -ECONNRESET:
977 case -ENOENT:
978 case -ESHUTDOWN:
979 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
980 tdev->td_urb_error = 1;
981 return;
982 default:
983 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
984 tdev->td_urb_error = 1;
985 goto exit;
986 }
987
988 if (length != 2) {
989 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
990 goto exit;
991 }
992
993 if (data[0] == TI_CODE_HARDWARE_ERROR) {
994 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
995 goto exit;
996 }
997
998 port_number = TI_GET_PORT_FROM_CODE(data[0]);
999 function = TI_GET_FUNC_FROM_CODE(data[0]);
1000
1001 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1002 __func__, port_number, function, data[1]);
1003
1004 if (port_number >= serial->num_ports) {
1005 dev_err(dev, "%s - bad port number, %d\n",
1006 __func__, port_number);
1007 goto exit;
1008 }
1009
1010 port = serial->port[port_number];
1011
1012 tport = usb_get_serial_port_data(port);
1013 if (!tport)
1014 goto exit;
1015
1016 switch (function) {
1017 case TI_CODE_DATA_ERROR:
1018 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1019 __func__, port_number, data[1]);
1020 break;
1021
1022 case TI_CODE_MODEM_STATUS:
1023 msr = data[1];
1024 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1025 ti_handle_new_msr(tport, msr);
1026 break;
1027
1028 default:
1029 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1030 __func__, data[1]);
1031 break;
1032 }
1033
1034 exit:
1035 retval = usb_submit_urb(urb, GFP_ATOMIC);
1036 if (retval)
1037 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1038 __func__, retval);
1039 }
1040
1041
1042 static void ti_bulk_in_callback(struct urb *urb)
1043 {
1044 struct ti_port *tport = urb->context;
1045 struct usb_serial_port *port = tport->tp_port;
1046 struct device *dev = &urb->dev->dev;
1047 int status = urb->status;
1048 int retval = 0;
1049
1050 switch (status) {
1051 case 0:
1052 break;
1053 case -ECONNRESET:
1054 case -ENOENT:
1055 case -ESHUTDOWN:
1056 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1057 tport->tp_tdev->td_urb_error = 1;
1058 return;
1059 default:
1060 dev_err(dev, "%s - nonzero urb status, %d\n",
1061 __func__, status);
1062 tport->tp_tdev->td_urb_error = 1;
1063 }
1064
1065 if (status == -EPIPE)
1066 goto exit;
1067
1068 if (status) {
1069 dev_err(dev, "%s - stopping read!\n", __func__);
1070 return;
1071 }
1072
1073 if (urb->actual_length) {
1074 usb_serial_debug_data(dev, __func__, urb->actual_length,
1075 urb->transfer_buffer);
1076
1077 if (!tport->tp_is_open)
1078 dev_dbg(dev, "%s - port closed, dropping data\n",
1079 __func__);
1080 else
1081 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1082 spin_lock(&tport->tp_lock);
1083 port->icount.rx += urb->actual_length;
1084 spin_unlock(&tport->tp_lock);
1085 }
1086
1087 exit:
1088 /* continue to read unless stopping */
1089 spin_lock(&tport->tp_lock);
1090 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1091 retval = usb_submit_urb(urb, GFP_ATOMIC);
1092 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1093 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1094
1095 spin_unlock(&tport->tp_lock);
1096 if (retval)
1097 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1098 __func__, retval);
1099 }
1100
1101
1102 static void ti_bulk_out_callback(struct urb *urb)
1103 {
1104 struct ti_port *tport = urb->context;
1105 struct usb_serial_port *port = tport->tp_port;
1106 int status = urb->status;
1107
1108 tport->tp_write_urb_in_use = 0;
1109
1110 switch (status) {
1111 case 0:
1112 break;
1113 case -ECONNRESET:
1114 case -ENOENT:
1115 case -ESHUTDOWN:
1116 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1117 tport->tp_tdev->td_urb_error = 1;
1118 return;
1119 default:
1120 dev_err_console(port, "%s - nonzero urb status, %d\n",
1121 __func__, status);
1122 tport->tp_tdev->td_urb_error = 1;
1123 }
1124
1125 /* send any buffered data */
1126 ti_send(tport);
1127 }
1128
1129
1130 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1131 int length)
1132 {
1133 int cnt;
1134
1135 do {
1136 cnt = tty_insert_flip_string(&port->port, data, length);
1137 if (cnt < length) {
1138 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1139 __func__, length - cnt);
1140 if (cnt == 0)
1141 break;
1142 }
1143 tty_flip_buffer_push(&port->port);
1144 data += cnt;
1145 length -= cnt;
1146 } while (length > 0);
1147 }
1148
1149
1150 static void ti_send(struct ti_port *tport)
1151 {
1152 int count, result;
1153 struct usb_serial_port *port = tport->tp_port;
1154 unsigned long flags;
1155
1156 spin_lock_irqsave(&tport->tp_lock, flags);
1157
1158 if (tport->tp_write_urb_in_use)
1159 goto unlock;
1160
1161 count = kfifo_out(&port->write_fifo,
1162 port->write_urb->transfer_buffer,
1163 port->bulk_out_size);
1164
1165 if (count == 0)
1166 goto unlock;
1167
1168 tport->tp_write_urb_in_use = 1;
1169
1170 spin_unlock_irqrestore(&tport->tp_lock, flags);
1171
1172 usb_serial_debug_data(&port->dev, __func__, count,
1173 port->write_urb->transfer_buffer);
1174
1175 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1176 usb_sndbulkpipe(port->serial->dev,
1177 port->bulk_out_endpointAddress),
1178 port->write_urb->transfer_buffer, count,
1179 ti_bulk_out_callback, tport);
1180
1181 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1182 if (result) {
1183 dev_err_console(port, "%s - submit write urb failed, %d\n",
1184 __func__, result);
1185 tport->tp_write_urb_in_use = 0;
1186 /* TODO: reschedule ti_send */
1187 } else {
1188 spin_lock_irqsave(&tport->tp_lock, flags);
1189 port->icount.tx += count;
1190 spin_unlock_irqrestore(&tport->tp_lock, flags);
1191 }
1192
1193 /* more room in the buffer for new writes, wakeup */
1194 tty_port_tty_wakeup(&port->port);
1195
1196 return;
1197 unlock:
1198 spin_unlock_irqrestore(&tport->tp_lock, flags);
1199 return;
1200 }
1201
1202
1203 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1204 {
1205 unsigned long flags;
1206 int status;
1207
1208 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1209 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1210 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1211
1212 spin_lock_irqsave(&tport->tp_lock, flags);
1213 if (!status)
1214 tport->tp_shadow_mcr = mcr;
1215 spin_unlock_irqrestore(&tport->tp_lock, flags);
1216
1217 return status;
1218 }
1219
1220
1221 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1222 {
1223 int size, status;
1224 struct ti_device *tdev = tport->tp_tdev;
1225 struct usb_serial_port *port = tport->tp_port;
1226 int port_number = port->port_number;
1227 struct ti_port_status *data;
1228
1229 size = sizeof(struct ti_port_status);
1230 data = kmalloc(size, GFP_KERNEL);
1231 if (!data)
1232 return -ENOMEM;
1233
1234 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1235 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1236 if (status) {
1237 dev_err(&port->dev,
1238 "%s - get port status command failed, %d\n",
1239 __func__, status);
1240 goto free_data;
1241 }
1242
1243 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1244
1245 *lsr = data->bLSR;
1246
1247 free_data:
1248 kfree(data);
1249 return status;
1250 }
1251
1252
1253 static int ti_get_serial_info(struct ti_port *tport,
1254 struct serial_struct __user *ret_arg)
1255 {
1256 struct usb_serial_port *port = tport->tp_port;
1257 struct serial_struct ret_serial;
1258 unsigned cwait;
1259
1260 if (!ret_arg)
1261 return -EFAULT;
1262
1263 cwait = port->port.closing_wait;
1264 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1265 cwait = jiffies_to_msecs(cwait) / 10;
1266
1267 memset(&ret_serial, 0, sizeof(ret_serial));
1268
1269 ret_serial.type = PORT_16550A;
1270 ret_serial.line = port->minor;
1271 ret_serial.port = port->port_number;
1272 ret_serial.flags = tport->tp_flags;
1273 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1274 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1275 ret_serial.closing_wait = cwait;
1276
1277 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1278 return -EFAULT;
1279
1280 return 0;
1281 }
1282
1283
1284 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1285 struct serial_struct __user *new_arg)
1286 {
1287 struct serial_struct new_serial;
1288 unsigned cwait;
1289
1290 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1291 return -EFAULT;
1292
1293 cwait = new_serial.closing_wait;
1294 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1295 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1296
1297 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1298 tport->tp_port->port.closing_wait = cwait;
1299
1300 return 0;
1301 }
1302
1303
1304 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1305 {
1306 struct async_icount *icount;
1307 struct tty_struct *tty;
1308 unsigned long flags;
1309
1310 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1311
1312 if (msr & TI_MSR_DELTA_MASK) {
1313 spin_lock_irqsave(&tport->tp_lock, flags);
1314 icount = &tport->tp_port->icount;
1315 if (msr & TI_MSR_DELTA_CTS)
1316 icount->cts++;
1317 if (msr & TI_MSR_DELTA_DSR)
1318 icount->dsr++;
1319 if (msr & TI_MSR_DELTA_CD)
1320 icount->dcd++;
1321 if (msr & TI_MSR_DELTA_RI)
1322 icount->rng++;
1323 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1324 spin_unlock_irqrestore(&tport->tp_lock, flags);
1325 }
1326
1327 tport->tp_msr = msr & TI_MSR_MASK;
1328
1329 /* handle CTS flow control */
1330 tty = tty_port_tty_get(&tport->tp_port->port);
1331 if (tty && C_CRTSCTS(tty)) {
1332 if (msr & TI_MSR_CTS)
1333 tty_wakeup(tty);
1334 }
1335 tty_kref_put(tty);
1336 }
1337
1338
1339 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1340 {
1341 unsigned long flags;
1342
1343 spin_lock_irqsave(&tport->tp_lock, flags);
1344
1345 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1346 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1347
1348 spin_unlock_irqrestore(&tport->tp_lock, flags);
1349 }
1350
1351
1352 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1353 {
1354 struct urb *urb;
1355 int status = 0;
1356 unsigned long flags;
1357
1358 spin_lock_irqsave(&tport->tp_lock, flags);
1359
1360 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1361 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1362 urb = tport->tp_port->read_urb;
1363 spin_unlock_irqrestore(&tport->tp_lock, flags);
1364 urb->context = tport;
1365 status = usb_submit_urb(urb, GFP_KERNEL);
1366 } else {
1367 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1368 spin_unlock_irqrestore(&tport->tp_lock, flags);
1369 }
1370
1371 return status;
1372 }
1373
1374
1375 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1376 __u16 moduleid, __u16 value, __u8 *data, int size)
1377 {
1378 int status;
1379
1380 status = usb_control_msg(tdev->td_serial->dev,
1381 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1382 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1383 value, moduleid, data, size, 1000);
1384
1385 if (status == size)
1386 status = 0;
1387
1388 if (status > 0)
1389 status = -ECOMM;
1390
1391 return status;
1392 }
1393
1394
1395 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1396 __u16 moduleid, __u16 value, __u8 *data, int size)
1397 {
1398 int status;
1399
1400 status = usb_control_msg(tdev->td_serial->dev,
1401 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1402 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1403 value, moduleid, data, size, 1000);
1404
1405 if (status == size)
1406 status = 0;
1407
1408 if (status > 0)
1409 status = -ECOMM;
1410
1411 return status;
1412 }
1413
1414
1415 static int ti_write_byte(struct usb_serial_port *port,
1416 struct ti_device *tdev, unsigned long addr,
1417 __u8 mask, __u8 byte)
1418 {
1419 int status;
1420 unsigned int size;
1421 struct ti_write_data_bytes *data;
1422
1423 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1424 addr, mask, byte);
1425
1426 size = sizeof(struct ti_write_data_bytes) + 2;
1427 data = kmalloc(size, GFP_KERNEL);
1428 if (!data)
1429 return -ENOMEM;
1430
1431 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1432 data->bDataType = TI_RW_DATA_BYTE;
1433 data->bDataCounter = 1;
1434 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1435 data->wBaseAddrLo = cpu_to_be16(addr);
1436 data->bData[0] = mask;
1437 data->bData[1] = byte;
1438
1439 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1440 (__u8 *)data, size);
1441
1442 if (status < 0)
1443 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1444
1445 kfree(data);
1446
1447 return status;
1448 }
1449
1450 static int ti_do_download(struct usb_device *dev, int pipe,
1451 u8 *buffer, int size)
1452 {
1453 int pos;
1454 u8 cs = 0;
1455 int done;
1456 struct ti_firmware_header *header;
1457 int status = 0;
1458 int len;
1459
1460 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1461 cs = (__u8)(cs + buffer[pos]);
1462
1463 header = (struct ti_firmware_header *)buffer;
1464 header->wLength = cpu_to_le16((__u16)(size
1465 - sizeof(struct ti_firmware_header)));
1466 header->bCheckSum = cs;
1467
1468 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1469 for (pos = 0; pos < size; pos += done) {
1470 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1471 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1472 &done, 1000);
1473 if (status)
1474 break;
1475 }
1476 return status;
1477 }
1478
1479 static int ti_download_firmware(struct ti_device *tdev)
1480 {
1481 int status;
1482 int buffer_size;
1483 __u8 *buffer;
1484 struct usb_device *dev = tdev->td_serial->dev;
1485 unsigned int pipe = usb_sndbulkpipe(dev,
1486 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1487 const struct firmware *fw_p;
1488 char buf[32];
1489
1490 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1491 snprintf(buf,
1492 sizeof(buf),
1493 "moxa/moxa-%04x.fw",
1494 le16_to_cpu(dev->descriptor.idProduct));
1495
1496 status = request_firmware(&fw_p, buf, &dev->dev);
1497 goto check_firmware;
1498 }
1499
1500 /* try ID specific firmware first, then try generic firmware */
1501 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1502 le16_to_cpu(dev->descriptor.idVendor),
1503 le16_to_cpu(dev->descriptor.idProduct));
1504 status = request_firmware(&fw_p, buf, &dev->dev);
1505
1506 if (status != 0) {
1507 buf[0] = '\0';
1508 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1509 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1510 case MTS_CDMA_PRODUCT_ID:
1511 strcpy(buf, "mts_cdma.fw");
1512 break;
1513 case MTS_GSM_PRODUCT_ID:
1514 strcpy(buf, "mts_gsm.fw");
1515 break;
1516 case MTS_EDGE_PRODUCT_ID:
1517 strcpy(buf, "mts_edge.fw");
1518 break;
1519 case MTS_MT9234MU_PRODUCT_ID:
1520 strcpy(buf, "mts_mt9234mu.fw");
1521 break;
1522 case MTS_MT9234ZBA_PRODUCT_ID:
1523 strcpy(buf, "mts_mt9234zba.fw");
1524 break;
1525 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1526 strcpy(buf, "mts_mt9234zba.fw");
1527 break; }
1528 }
1529 if (buf[0] == '\0') {
1530 if (tdev->td_is_3410)
1531 strcpy(buf, "ti_3410.fw");
1532 else
1533 strcpy(buf, "ti_5052.fw");
1534 }
1535 status = request_firmware(&fw_p, buf, &dev->dev);
1536 }
1537
1538 check_firmware:
1539 if (status) {
1540 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1541 return -ENOENT;
1542 }
1543 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1544 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1545 release_firmware(fw_p);
1546 return -ENOENT;
1547 }
1548
1549 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1550 buffer = kmalloc(buffer_size, GFP_KERNEL);
1551 if (buffer) {
1552 memcpy(buffer, fw_p->data, fw_p->size);
1553 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1554 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1555 kfree(buffer);
1556 } else {
1557 status = -ENOMEM;
1558 }
1559 release_firmware(fw_p);
1560 if (status) {
1561 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1562 __func__, status);
1563 return status;
1564 }
1565
1566 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1567
1568 return 0;
1569 }
Linux with added FPC-III support