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Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
[mirror_ubuntu-artful-kernel.git] / drivers / usb / serial / ti_usb_3410_5052.c
1 /* vi: ts=8 sw=8
2 *
3 * TI 3410/5052 USB Serial Driver
4 *
5 * Copyright (C) 2004 Texas Instruments
6 *
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>.
19 */
20
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/firmware.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/tty.h>
27 #include <linux/tty_driver.h>
28 #include <linux/tty_flip.h>
29 #include <linux/module.h>
30 #include <linux/spinlock.h>
31 #include <linux/ioctl.h>
32 #include <linux/serial.h>
33 #include <linux/kfifo.h>
34 #include <linux/mutex.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
38
39 #include "ti_usb_3410_5052.h"
40
41 /* Defines */
42
43 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
44 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
45
46 #define TI_FIRMWARE_BUF_SIZE 16284
47
48 #define TI_WRITE_BUF_SIZE 1024
49
50 #define TI_TRANSFER_TIMEOUT 2
51
52 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
53
54 /* supported setserial flags */
55 #define TI_SET_SERIAL_FLAGS 0
56
57 /* read urb states */
58 #define TI_READ_URB_RUNNING 0
59 #define TI_READ_URB_STOPPING 1
60 #define TI_READ_URB_STOPPED 2
61
62 #define TI_EXTRA_VID_PID_COUNT 5
63
64
65 /* Structures */
66
67 struct ti_port {
68 int tp_is_open;
69 __u8 tp_msr;
70 __u8 tp_shadow_mcr;
71 __u8 tp_uart_mode; /* 232 or 485 modes */
72 unsigned int tp_uart_base_addr;
73 int tp_flags;
74 wait_queue_head_t tp_write_wait;
75 struct ti_device *tp_tdev;
76 struct usb_serial_port *tp_port;
77 spinlock_t tp_lock;
78 int tp_read_urb_state;
79 int tp_write_urb_in_use;
80 struct kfifo write_fifo;
81 };
82
83 struct ti_device {
84 struct mutex td_open_close_lock;
85 int td_open_port_count;
86 struct usb_serial *td_serial;
87 int td_is_3410;
88 int td_urb_error;
89 };
90
91
92 /* Function Declarations */
93
94 static int ti_startup(struct usb_serial *serial);
95 static void ti_release(struct usb_serial *serial);
96 static int ti_port_probe(struct usb_serial_port *port);
97 static int ti_port_remove(struct usb_serial_port *port);
98 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
99 static void ti_close(struct usb_serial_port *port);
100 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
101 const unsigned char *data, int count);
102 static int ti_write_room(struct tty_struct *tty);
103 static int ti_chars_in_buffer(struct tty_struct *tty);
104 static void ti_throttle(struct tty_struct *tty);
105 static void ti_unthrottle(struct tty_struct *tty);
106 static int ti_ioctl(struct tty_struct *tty,
107 unsigned int cmd, unsigned long arg);
108 static void ti_set_termios(struct tty_struct *tty,
109 struct usb_serial_port *port, struct ktermios *old_termios);
110 static int ti_tiocmget(struct tty_struct *tty);
111 static int ti_tiocmset(struct tty_struct *tty,
112 unsigned int set, unsigned int clear);
113 static void ti_break(struct tty_struct *tty, int break_state);
114 static void ti_interrupt_callback(struct urb *urb);
115 static void ti_bulk_in_callback(struct urb *urb);
116 static void ti_bulk_out_callback(struct urb *urb);
117
118 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
119 int length);
120 static void ti_send(struct ti_port *tport);
121 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
122 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
123 static int ti_get_serial_info(struct ti_port *tport,
124 struct serial_struct __user *ret_arg);
125 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
126 struct serial_struct __user *new_arg);
127 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
128
129 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
130 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
131
132 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
133 __u16 moduleid, __u16 value, __u8 *data, int size);
134 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
135 __u16 moduleid, __u16 value, __u8 *data, int size);
136
137 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
138 unsigned long addr, __u8 mask, __u8 byte);
139
140 static int ti_download_firmware(struct ti_device *tdev);
141
142
143 /* Data */
144
145 /* module parameters */
146 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
147 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
148 static unsigned int vendor_3410_count;
149 static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
150 static unsigned int product_3410_count;
151 static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
152 static unsigned int vendor_5052_count;
153 static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
154 static unsigned int product_5052_count;
155
156 /* supported devices */
157 /* the array dimension is the number of default entries plus */
158 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
159 /* null entry */
160 static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = {
161 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
162 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
163 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
164 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
165 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
166 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
167 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
168 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
169 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
170 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
171 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
172 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
173 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
174 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
175 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
176 };
177
178 static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
179 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
180 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
181 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
182 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
183 };
184
185 static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] = {
186 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
187 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
188 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
189 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
190 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
191 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
192 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
193 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
194 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
195 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
196 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
197 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
198 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
199 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
200 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
201 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
202 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
203 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
205 { }
206 };
207
208 static struct usb_serial_driver ti_1port_device = {
209 .driver = {
210 .owner = THIS_MODULE,
211 .name = "ti_usb_3410_5052_1",
212 },
213 .description = "TI USB 3410 1 port adapter",
214 .id_table = ti_id_table_3410,
215 .num_ports = 1,
216 .attach = ti_startup,
217 .release = ti_release,
218 .port_probe = ti_port_probe,
219 .port_remove = ti_port_remove,
220 .open = ti_open,
221 .close = ti_close,
222 .write = ti_write,
223 .write_room = ti_write_room,
224 .chars_in_buffer = ti_chars_in_buffer,
225 .throttle = ti_throttle,
226 .unthrottle = ti_unthrottle,
227 .ioctl = ti_ioctl,
228 .set_termios = ti_set_termios,
229 .tiocmget = ti_tiocmget,
230 .tiocmset = ti_tiocmset,
231 .tiocmiwait = usb_serial_generic_tiocmiwait,
232 .get_icount = usb_serial_generic_get_icount,
233 .break_ctl = ti_break,
234 .read_int_callback = ti_interrupt_callback,
235 .read_bulk_callback = ti_bulk_in_callback,
236 .write_bulk_callback = ti_bulk_out_callback,
237 };
238
239 static struct usb_serial_driver ti_2port_device = {
240 .driver = {
241 .owner = THIS_MODULE,
242 .name = "ti_usb_3410_5052_2",
243 },
244 .description = "TI USB 5052 2 port adapter",
245 .id_table = ti_id_table_5052,
246 .num_ports = 2,
247 .attach = ti_startup,
248 .release = ti_release,
249 .port_probe = ti_port_probe,
250 .port_remove = ti_port_remove,
251 .open = ti_open,
252 .close = ti_close,
253 .write = ti_write,
254 .write_room = ti_write_room,
255 .chars_in_buffer = ti_chars_in_buffer,
256 .throttle = ti_throttle,
257 .unthrottle = ti_unthrottle,
258 .ioctl = ti_ioctl,
259 .set_termios = ti_set_termios,
260 .tiocmget = ti_tiocmget,
261 .tiocmset = ti_tiocmset,
262 .tiocmiwait = usb_serial_generic_tiocmiwait,
263 .get_icount = usb_serial_generic_get_icount,
264 .break_ctl = ti_break,
265 .read_int_callback = ti_interrupt_callback,
266 .read_bulk_callback = ti_bulk_in_callback,
267 .write_bulk_callback = ti_bulk_out_callback,
268 };
269
270 static struct usb_serial_driver * const serial_drivers[] = {
271 &ti_1port_device, &ti_2port_device, NULL
272 };
273
274 /* Module */
275
276 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
277 MODULE_DESCRIPTION(TI_DRIVER_DESC);
278 MODULE_LICENSE("GPL");
279
280 MODULE_FIRMWARE("ti_3410.fw");
281 MODULE_FIRMWARE("ti_5052.fw");
282 MODULE_FIRMWARE("mts_cdma.fw");
283 MODULE_FIRMWARE("mts_gsm.fw");
284 MODULE_FIRMWARE("mts_edge.fw");
285 MODULE_FIRMWARE("mts_mt9234mu.fw");
286 MODULE_FIRMWARE("mts_mt9234zba.fw");
287
288 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
289 MODULE_PARM_DESC(closing_wait,
290 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
291
292 module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
293 MODULE_PARM_DESC(vendor_3410,
294 "Vendor ids for 3410 based devices, 1-5 short integers");
295 module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
296 MODULE_PARM_DESC(product_3410,
297 "Product ids for 3410 based devices, 1-5 short integers");
298 module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
299 MODULE_PARM_DESC(vendor_5052,
300 "Vendor ids for 5052 based devices, 1-5 short integers");
301 module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
302 MODULE_PARM_DESC(product_5052,
303 "Product ids for 5052 based devices, 1-5 short integers");
304
305 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
306
307
308 /* Functions */
309
310 static int __init ti_init(void)
311 {
312 int i, j, c;
313
314 /* insert extra vendor and product ids */
315 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
316 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
317 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
318 ti_id_table_3410[j].idVendor = vendor_3410[i];
319 ti_id_table_3410[j].idProduct = product_3410[i];
320 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
321 ti_id_table_combined[c].idVendor = vendor_3410[i];
322 ti_id_table_combined[c].idProduct = product_3410[i];
323 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
324 }
325 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
326 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
327 ti_id_table_5052[j].idVendor = vendor_5052[i];
328 ti_id_table_5052[j].idProduct = product_5052[i];
329 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
330 ti_id_table_combined[c].idVendor = vendor_5052[i];
331 ti_id_table_combined[c].idProduct = product_5052[i];
332 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
333 }
334
335 return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ti_id_table_combined);
336 }
337
338 static void __exit ti_exit(void)
339 {
340 usb_serial_deregister_drivers(serial_drivers);
341 }
342
343 module_init(ti_init);
344 module_exit(ti_exit);
345
346
347 static int ti_startup(struct usb_serial *serial)
348 {
349 struct ti_device *tdev;
350 struct usb_device *dev = serial->dev;
351 int status;
352
353 dev_dbg(&dev->dev,
354 "%s - product 0x%4X, num configurations %d, configuration value %d",
355 __func__, le16_to_cpu(dev->descriptor.idProduct),
356 dev->descriptor.bNumConfigurations,
357 dev->actconfig->desc.bConfigurationValue);
358
359 /* create device structure */
360 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
361 if (tdev == NULL) {
362 dev_err(&dev->dev, "%s - out of memory\n", __func__);
363 return -ENOMEM;
364 }
365 mutex_init(&tdev->td_open_close_lock);
366 tdev->td_serial = serial;
367 usb_set_serial_data(serial, tdev);
368
369 /* determine device type */
370 if (usb_match_id(serial->interface, ti_id_table_3410))
371 tdev->td_is_3410 = 1;
372 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
373 tdev->td_is_3410 ? "3410" : "5052");
374
375 /* if we have only 1 configuration, download firmware */
376 if (dev->descriptor.bNumConfigurations == 1) {
377 status = ti_download_firmware(tdev);
378
379 if (status != 0)
380 goto free_tdev;
381
382 /* 3410 must be reset, 5052 resets itself */
383 if (tdev->td_is_3410) {
384 msleep_interruptible(100);
385 usb_reset_device(dev);
386 }
387
388 status = -ENODEV;
389 goto free_tdev;
390 }
391
392 /* the second configuration must be set */
393 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
394 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
395 status = status ? status : -ENODEV;
396 goto free_tdev;
397 }
398
399 return 0;
400
401 free_tdev:
402 kfree(tdev);
403 usb_set_serial_data(serial, NULL);
404 return status;
405 }
406
407
408 static void ti_release(struct usb_serial *serial)
409 {
410 struct ti_device *tdev = usb_get_serial_data(serial);
411
412 kfree(tdev);
413 }
414
415 static int ti_port_probe(struct usb_serial_port *port)
416 {
417 struct ti_port *tport;
418
419 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
420 if (!tport)
421 return -ENOMEM;
422
423 spin_lock_init(&tport->tp_lock);
424 if (port == port->serial->port[0])
425 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
426 else
427 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
428 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
429 init_waitqueue_head(&tport->tp_write_wait);
430 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, GFP_KERNEL)) {
431 kfree(tport);
432 return -ENOMEM;
433 }
434 tport->tp_port = port;
435 tport->tp_tdev = usb_get_serial_data(port->serial);
436 tport->tp_uart_mode = 0; /* default is RS232 */
437
438 usb_set_serial_port_data(port, tport);
439
440 return 0;
441 }
442
443 static int ti_port_remove(struct usb_serial_port *port)
444 {
445 struct ti_port *tport;
446
447 tport = usb_get_serial_port_data(port);
448 kfifo_free(&tport->write_fifo);
449 kfree(tport);
450
451 return 0;
452 }
453
454 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
455 {
456 struct ti_port *tport = usb_get_serial_port_data(port);
457 struct ti_device *tdev;
458 struct usb_device *dev;
459 struct urb *urb;
460 int port_number;
461 int status;
462 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
463 TI_PIPE_TIMEOUT_ENABLE |
464 (TI_TRANSFER_TIMEOUT << 2));
465
466 if (tport == NULL)
467 return -ENODEV;
468
469 dev = port->serial->dev;
470 tdev = tport->tp_tdev;
471
472 /* only one open on any port on a device at a time */
473 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
474 return -ERESTARTSYS;
475
476 port_number = port->number - port->serial->minor;
477
478 tport->tp_msr = 0;
479 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
480
481 /* start interrupt urb the first time a port is opened on this device */
482 if (tdev->td_open_port_count == 0) {
483 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
484 urb = tdev->td_serial->port[0]->interrupt_in_urb;
485 if (!urb) {
486 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
487 status = -EINVAL;
488 goto release_lock;
489 }
490 urb->context = tdev;
491 status = usb_submit_urb(urb, GFP_KERNEL);
492 if (status) {
493 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
494 goto release_lock;
495 }
496 }
497
498 if (tty)
499 ti_set_termios(tty, port, &tty->termios);
500
501 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
502 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
503 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
504 if (status) {
505 dev_err(&port->dev, "%s - cannot send open command, %d\n",
506 __func__, status);
507 goto unlink_int_urb;
508 }
509
510 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
511 status = ti_command_out_sync(tdev, TI_START_PORT,
512 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
513 if (status) {
514 dev_err(&port->dev, "%s - cannot send start command, %d\n",
515 __func__, status);
516 goto unlink_int_urb;
517 }
518
519 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
520 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
521 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
522 if (status) {
523 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
524 __func__, status);
525 goto unlink_int_urb;
526 }
527 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
528 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
529 if (status) {
530 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
531 __func__, status);
532 goto unlink_int_urb;
533 }
534
535 /* reset the data toggle on the bulk endpoints to work around bug in
536 * host controllers where things get out of sync some times */
537 usb_clear_halt(dev, port->write_urb->pipe);
538 usb_clear_halt(dev, port->read_urb->pipe);
539
540 if (tty)
541 ti_set_termios(tty, port, &tty->termios);
542
543 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
544 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
545 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
546 if (status) {
547 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
548 __func__, status);
549 goto unlink_int_urb;
550 }
551
552 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
553 status = ti_command_out_sync(tdev, TI_START_PORT,
554 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
555 if (status) {
556 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
557 __func__, status);
558 goto unlink_int_urb;
559 }
560
561 /* start read urb */
562 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
563 urb = port->read_urb;
564 if (!urb) {
565 dev_err(&port->dev, "%s - no read urb\n", __func__);
566 status = -EINVAL;
567 goto unlink_int_urb;
568 }
569 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
570 urb->context = tport;
571 status = usb_submit_urb(urb, GFP_KERNEL);
572 if (status) {
573 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
574 __func__, status);
575 goto unlink_int_urb;
576 }
577
578 tport->tp_is_open = 1;
579 ++tdev->td_open_port_count;
580
581 port->port.drain_delay = 3;
582
583 goto release_lock;
584
585 unlink_int_urb:
586 if (tdev->td_open_port_count == 0)
587 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
588 release_lock:
589 mutex_unlock(&tdev->td_open_close_lock);
590 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
591 return status;
592 }
593
594
595 static void ti_close(struct usb_serial_port *port)
596 {
597 struct ti_device *tdev;
598 struct ti_port *tport;
599 int port_number;
600 int status;
601 int do_unlock;
602 unsigned long flags;
603
604 tdev = usb_get_serial_data(port->serial);
605 tport = usb_get_serial_port_data(port);
606 if (tdev == NULL || tport == NULL)
607 return;
608
609 tport->tp_is_open = 0;
610
611 usb_kill_urb(port->read_urb);
612 usb_kill_urb(port->write_urb);
613 tport->tp_write_urb_in_use = 0;
614 spin_lock_irqsave(&tport->tp_lock, flags);
615 kfifo_reset_out(&tport->write_fifo);
616 spin_unlock_irqrestore(&tport->tp_lock, flags);
617
618 port_number = port->number - port->serial->minor;
619
620 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
621 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
622 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
623 if (status)
624 dev_err(&port->dev,
625 "%s - cannot send close port command, %d\n"
626 , __func__, status);
627
628 /* if mutex_lock is interrupted, continue anyway */
629 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
630 --tport->tp_tdev->td_open_port_count;
631 if (tport->tp_tdev->td_open_port_count <= 0) {
632 /* last port is closed, shut down interrupt urb */
633 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
634 tport->tp_tdev->td_open_port_count = 0;
635 }
636 if (do_unlock)
637 mutex_unlock(&tdev->td_open_close_lock);
638 }
639
640
641 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
642 const unsigned char *data, int count)
643 {
644 struct ti_port *tport = usb_get_serial_port_data(port);
645
646 if (count == 0) {
647 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
648 return 0;
649 }
650
651 if (tport == NULL || !tport->tp_is_open)
652 return -ENODEV;
653
654 count = kfifo_in_locked(&tport->write_fifo, data, count,
655 &tport->tp_lock);
656 ti_send(tport);
657
658 return count;
659 }
660
661
662 static int ti_write_room(struct tty_struct *tty)
663 {
664 struct usb_serial_port *port = tty->driver_data;
665 struct ti_port *tport = usb_get_serial_port_data(port);
666 int room = 0;
667 unsigned long flags;
668
669 if (tport == NULL)
670 return 0;
671
672 spin_lock_irqsave(&tport->tp_lock, flags);
673 room = kfifo_avail(&tport->write_fifo);
674 spin_unlock_irqrestore(&tport->tp_lock, flags);
675
676 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
677 return room;
678 }
679
680
681 static int ti_chars_in_buffer(struct tty_struct *tty)
682 {
683 struct usb_serial_port *port = tty->driver_data;
684 struct ti_port *tport = usb_get_serial_port_data(port);
685 int chars = 0;
686 unsigned long flags;
687 int ret;
688 u8 lsr;
689
690 if (tport == NULL)
691 return 0;
692
693 spin_lock_irqsave(&tport->tp_lock, flags);
694 chars = kfifo_len(&tport->write_fifo);
695 spin_unlock_irqrestore(&tport->tp_lock, flags);
696
697 if (!chars) {
698 ret = ti_get_lsr(tport, &lsr);
699 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
700 chars = 1;
701 }
702
703 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
704 return chars;
705 }
706
707
708 static void ti_throttle(struct tty_struct *tty)
709 {
710 struct usb_serial_port *port = tty->driver_data;
711 struct ti_port *tport = usb_get_serial_port_data(port);
712
713 if (tport == NULL)
714 return;
715
716 if (I_IXOFF(tty) || C_CRTSCTS(tty))
717 ti_stop_read(tport, tty);
718
719 }
720
721
722 static void ti_unthrottle(struct tty_struct *tty)
723 {
724 struct usb_serial_port *port = tty->driver_data;
725 struct ti_port *tport = usb_get_serial_port_data(port);
726 int status;
727
728 if (tport == NULL)
729 return;
730
731 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
732 status = ti_restart_read(tport, tty);
733 if (status)
734 dev_err(&port->dev, "%s - cannot restart read, %d\n",
735 __func__, status);
736 }
737 }
738
739 static int ti_ioctl(struct tty_struct *tty,
740 unsigned int cmd, unsigned long arg)
741 {
742 struct usb_serial_port *port = tty->driver_data;
743 struct ti_port *tport = usb_get_serial_port_data(port);
744
745 dev_dbg(&port->dev, "%s - cmd = 0x%04X\n", __func__, cmd);
746
747 if (tport == NULL)
748 return -ENODEV;
749
750 switch (cmd) {
751 case TIOCGSERIAL:
752 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
753 return ti_get_serial_info(tport,
754 (struct serial_struct __user *)arg);
755 case TIOCSSERIAL:
756 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
757 return ti_set_serial_info(tty, tport,
758 (struct serial_struct __user *)arg);
759 }
760 return -ENOIOCTLCMD;
761 }
762
763
764 static void ti_set_termios(struct tty_struct *tty,
765 struct usb_serial_port *port, struct ktermios *old_termios)
766 {
767 struct ti_port *tport = usb_get_serial_port_data(port);
768 struct ti_uart_config *config;
769 tcflag_t cflag, iflag;
770 int baud;
771 int status;
772 int port_number = port->number - port->serial->minor;
773 unsigned int mcr;
774
775 cflag = tty->termios.c_cflag;
776 iflag = tty->termios.c_iflag;
777
778 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
779 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
780 old_termios->c_cflag, old_termios->c_iflag);
781
782 if (tport == NULL)
783 return;
784
785 config = kmalloc(sizeof(*config), GFP_KERNEL);
786 if (!config) {
787 dev_err(&port->dev, "%s - out of memory\n", __func__);
788 return;
789 }
790
791 config->wFlags = 0;
792
793 /* these flags must be set */
794 config->wFlags |= TI_UART_ENABLE_MS_INTS;
795 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
796 config->bUartMode = (__u8)(tport->tp_uart_mode);
797
798 switch (cflag & CSIZE) {
799 case CS5:
800 config->bDataBits = TI_UART_5_DATA_BITS;
801 break;
802 case CS6:
803 config->bDataBits = TI_UART_6_DATA_BITS;
804 break;
805 case CS7:
806 config->bDataBits = TI_UART_7_DATA_BITS;
807 break;
808 default:
809 case CS8:
810 config->bDataBits = TI_UART_8_DATA_BITS;
811 break;
812 }
813
814 /* CMSPAR isn't supported by this driver */
815 tty->termios.c_cflag &= ~CMSPAR;
816
817 if (cflag & PARENB) {
818 if (cflag & PARODD) {
819 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
820 config->bParity = TI_UART_ODD_PARITY;
821 } else {
822 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
823 config->bParity = TI_UART_EVEN_PARITY;
824 }
825 } else {
826 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
827 config->bParity = TI_UART_NO_PARITY;
828 }
829
830 if (cflag & CSTOPB)
831 config->bStopBits = TI_UART_2_STOP_BITS;
832 else
833 config->bStopBits = TI_UART_1_STOP_BITS;
834
835 if (cflag & CRTSCTS) {
836 /* RTS flow control must be off to drop RTS for baud rate B0 */
837 if ((cflag & CBAUD) != B0)
838 config->wFlags |= TI_UART_ENABLE_RTS_IN;
839 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
840 } else {
841 tty->hw_stopped = 0;
842 ti_restart_read(tport, tty);
843 }
844
845 if (I_IXOFF(tty) || I_IXON(tty)) {
846 config->cXon = START_CHAR(tty);
847 config->cXoff = STOP_CHAR(tty);
848
849 if (I_IXOFF(tty))
850 config->wFlags |= TI_UART_ENABLE_X_IN;
851 else
852 ti_restart_read(tport, tty);
853
854 if (I_IXON(tty))
855 config->wFlags |= TI_UART_ENABLE_X_OUT;
856 }
857
858 baud = tty_get_baud_rate(tty);
859 if (!baud)
860 baud = 9600;
861 if (tport->tp_tdev->td_is_3410)
862 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
863 else
864 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
865
866 /* FIXME: Should calculate resulting baud here and report it back */
867 if ((cflag & CBAUD) != B0)
868 tty_encode_baud_rate(tty, baud, baud);
869
870 dev_dbg(&port->dev,
871 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
872 __func__, baud, config->wBaudRate, config->wFlags,
873 config->bDataBits, config->bParity, config->bStopBits,
874 config->cXon, config->cXoff, config->bUartMode);
875
876 cpu_to_be16s(&config->wBaudRate);
877 cpu_to_be16s(&config->wFlags);
878
879 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
880 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
881 sizeof(*config));
882 if (status)
883 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
884 __func__, port_number, status);
885
886 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
887 mcr = tport->tp_shadow_mcr;
888 /* if baud rate is B0, clear RTS and DTR */
889 if ((cflag & CBAUD) == B0)
890 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
891 status = ti_set_mcr(tport, mcr);
892 if (status)
893 dev_err(&port->dev,
894 "%s - cannot set modem control on port %d, %d\n",
895 __func__, port_number, status);
896
897 kfree(config);
898 }
899
900
901 static int ti_tiocmget(struct tty_struct *tty)
902 {
903 struct usb_serial_port *port = tty->driver_data;
904 struct ti_port *tport = usb_get_serial_port_data(port);
905 unsigned int result;
906 unsigned int msr;
907 unsigned int mcr;
908 unsigned long flags;
909
910 if (tport == NULL)
911 return -ENODEV;
912
913 spin_lock_irqsave(&tport->tp_lock, flags);
914 msr = tport->tp_msr;
915 mcr = tport->tp_shadow_mcr;
916 spin_unlock_irqrestore(&tport->tp_lock, flags);
917
918 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
919 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
920 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
921 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
922 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
923 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
924 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
925
926 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
927
928 return result;
929 }
930
931
932 static int ti_tiocmset(struct tty_struct *tty,
933 unsigned int set, unsigned int clear)
934 {
935 struct usb_serial_port *port = tty->driver_data;
936 struct ti_port *tport = usb_get_serial_port_data(port);
937 unsigned int mcr;
938 unsigned long flags;
939
940 if (tport == NULL)
941 return -ENODEV;
942
943 spin_lock_irqsave(&tport->tp_lock, flags);
944 mcr = tport->tp_shadow_mcr;
945
946 if (set & TIOCM_RTS)
947 mcr |= TI_MCR_RTS;
948 if (set & TIOCM_DTR)
949 mcr |= TI_MCR_DTR;
950 if (set & TIOCM_LOOP)
951 mcr |= TI_MCR_LOOP;
952
953 if (clear & TIOCM_RTS)
954 mcr &= ~TI_MCR_RTS;
955 if (clear & TIOCM_DTR)
956 mcr &= ~TI_MCR_DTR;
957 if (clear & TIOCM_LOOP)
958 mcr &= ~TI_MCR_LOOP;
959 spin_unlock_irqrestore(&tport->tp_lock, flags);
960
961 return ti_set_mcr(tport, mcr);
962 }
963
964
965 static void ti_break(struct tty_struct *tty, int break_state)
966 {
967 struct usb_serial_port *port = tty->driver_data;
968 struct ti_port *tport = usb_get_serial_port_data(port);
969 int status;
970
971 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
972
973 if (tport == NULL)
974 return;
975
976 status = ti_write_byte(port, tport->tp_tdev,
977 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
978 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
979
980 if (status)
981 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
982 }
983
984
985 static void ti_interrupt_callback(struct urb *urb)
986 {
987 struct ti_device *tdev = urb->context;
988 struct usb_serial_port *port;
989 struct usb_serial *serial = tdev->td_serial;
990 struct ti_port *tport;
991 struct device *dev = &urb->dev->dev;
992 unsigned char *data = urb->transfer_buffer;
993 int length = urb->actual_length;
994 int port_number;
995 int function;
996 int status = urb->status;
997 int retval;
998 __u8 msr;
999
1000 switch (status) {
1001 case 0:
1002 break;
1003 case -ECONNRESET:
1004 case -ENOENT:
1005 case -ESHUTDOWN:
1006 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1007 tdev->td_urb_error = 1;
1008 return;
1009 default:
1010 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1011 tdev->td_urb_error = 1;
1012 goto exit;
1013 }
1014
1015 if (length != 2) {
1016 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1017 goto exit;
1018 }
1019
1020 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1021 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1022 goto exit;
1023 }
1024
1025 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1026 function = TI_GET_FUNC_FROM_CODE(data[0]);
1027
1028 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1029 __func__, port_number, function, data[1]);
1030
1031 if (port_number >= serial->num_ports) {
1032 dev_err(dev, "%s - bad port number, %d\n",
1033 __func__, port_number);
1034 goto exit;
1035 }
1036
1037 port = serial->port[port_number];
1038
1039 tport = usb_get_serial_port_data(port);
1040 if (!tport)
1041 goto exit;
1042
1043 switch (function) {
1044 case TI_CODE_DATA_ERROR:
1045 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1046 __func__, port_number, data[1]);
1047 break;
1048
1049 case TI_CODE_MODEM_STATUS:
1050 msr = data[1];
1051 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1052 ti_handle_new_msr(tport, msr);
1053 break;
1054
1055 default:
1056 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1057 __func__, data[1]);
1058 break;
1059 }
1060
1061 exit:
1062 retval = usb_submit_urb(urb, GFP_ATOMIC);
1063 if (retval)
1064 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1065 __func__, retval);
1066 }
1067
1068
1069 static void ti_bulk_in_callback(struct urb *urb)
1070 {
1071 struct ti_port *tport = urb->context;
1072 struct usb_serial_port *port = tport->tp_port;
1073 struct device *dev = &urb->dev->dev;
1074 int status = urb->status;
1075 int retval = 0;
1076
1077 switch (status) {
1078 case 0:
1079 break;
1080 case -ECONNRESET:
1081 case -ENOENT:
1082 case -ESHUTDOWN:
1083 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1084 tport->tp_tdev->td_urb_error = 1;
1085 wake_up_interruptible(&tport->tp_write_wait);
1086 return;
1087 default:
1088 dev_err(dev, "%s - nonzero urb status, %d\n",
1089 __func__, status);
1090 tport->tp_tdev->td_urb_error = 1;
1091 wake_up_interruptible(&tport->tp_write_wait);
1092 }
1093
1094 if (status == -EPIPE)
1095 goto exit;
1096
1097 if (status) {
1098 dev_err(dev, "%s - stopping read!\n", __func__);
1099 return;
1100 }
1101
1102 if (urb->actual_length) {
1103 usb_serial_debug_data(dev, __func__, urb->actual_length,
1104 urb->transfer_buffer);
1105
1106 if (!tport->tp_is_open)
1107 dev_dbg(dev, "%s - port closed, dropping data\n",
1108 __func__);
1109 else
1110 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1111 spin_lock(&tport->tp_lock);
1112 port->icount.rx += urb->actual_length;
1113 spin_unlock(&tport->tp_lock);
1114 }
1115
1116 exit:
1117 /* continue to read unless stopping */
1118 spin_lock(&tport->tp_lock);
1119 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1120 retval = usb_submit_urb(urb, GFP_ATOMIC);
1121 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1122 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1123
1124 spin_unlock(&tport->tp_lock);
1125 if (retval)
1126 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1127 __func__, retval);
1128 }
1129
1130
1131 static void ti_bulk_out_callback(struct urb *urb)
1132 {
1133 struct ti_port *tport = urb->context;
1134 struct usb_serial_port *port = tport->tp_port;
1135 int status = urb->status;
1136
1137 tport->tp_write_urb_in_use = 0;
1138
1139 switch (status) {
1140 case 0:
1141 break;
1142 case -ECONNRESET:
1143 case -ENOENT:
1144 case -ESHUTDOWN:
1145 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1146 tport->tp_tdev->td_urb_error = 1;
1147 wake_up_interruptible(&tport->tp_write_wait);
1148 return;
1149 default:
1150 dev_err_console(port, "%s - nonzero urb status, %d\n",
1151 __func__, status);
1152 tport->tp_tdev->td_urb_error = 1;
1153 wake_up_interruptible(&tport->tp_write_wait);
1154 }
1155
1156 /* send any buffered data */
1157 ti_send(tport);
1158 }
1159
1160
1161 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1162 int length)
1163 {
1164 int cnt;
1165
1166 do {
1167 cnt = tty_insert_flip_string(&port->port, data, length);
1168 if (cnt < length) {
1169 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1170 __func__, length - cnt);
1171 if (cnt == 0)
1172 break;
1173 }
1174 tty_flip_buffer_push(&port->port);
1175 data += cnt;
1176 length -= cnt;
1177 } while (length > 0);
1178 }
1179
1180
1181 static void ti_send(struct ti_port *tport)
1182 {
1183 int count, result;
1184 struct usb_serial_port *port = tport->tp_port;
1185 unsigned long flags;
1186
1187 spin_lock_irqsave(&tport->tp_lock, flags);
1188
1189 if (tport->tp_write_urb_in_use)
1190 goto unlock;
1191
1192 count = kfifo_out(&tport->write_fifo,
1193 port->write_urb->transfer_buffer,
1194 port->bulk_out_size);
1195
1196 if (count == 0)
1197 goto unlock;
1198
1199 tport->tp_write_urb_in_use = 1;
1200
1201 spin_unlock_irqrestore(&tport->tp_lock, flags);
1202
1203 usb_serial_debug_data(&port->dev, __func__, count,
1204 port->write_urb->transfer_buffer);
1205
1206 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1207 usb_sndbulkpipe(port->serial->dev,
1208 port->bulk_out_endpointAddress),
1209 port->write_urb->transfer_buffer, count,
1210 ti_bulk_out_callback, tport);
1211
1212 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1213 if (result) {
1214 dev_err_console(port, "%s - submit write urb failed, %d\n",
1215 __func__, result);
1216 tport->tp_write_urb_in_use = 0;
1217 /* TODO: reschedule ti_send */
1218 } else {
1219 spin_lock_irqsave(&tport->tp_lock, flags);
1220 port->icount.tx += count;
1221 spin_unlock_irqrestore(&tport->tp_lock, flags);
1222 }
1223
1224 /* more room in the buffer for new writes, wakeup */
1225 tty_port_tty_wakeup(&port->port);
1226
1227 wake_up_interruptible(&tport->tp_write_wait);
1228 return;
1229 unlock:
1230 spin_unlock_irqrestore(&tport->tp_lock, flags);
1231 return;
1232 }
1233
1234
1235 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1236 {
1237 unsigned long flags;
1238 int status;
1239
1240 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1241 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1242 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1243
1244 spin_lock_irqsave(&tport->tp_lock, flags);
1245 if (!status)
1246 tport->tp_shadow_mcr = mcr;
1247 spin_unlock_irqrestore(&tport->tp_lock, flags);
1248
1249 return status;
1250 }
1251
1252
1253 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1254 {
1255 int size, status;
1256 struct ti_device *tdev = tport->tp_tdev;
1257 struct usb_serial_port *port = tport->tp_port;
1258 int port_number = port->number - port->serial->minor;
1259 struct ti_port_status *data;
1260
1261 size = sizeof(struct ti_port_status);
1262 data = kmalloc(size, GFP_KERNEL);
1263 if (!data) {
1264 dev_err(&port->dev, "%s - out of memory\n", __func__);
1265 return -ENOMEM;
1266 }
1267
1268 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1269 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1270 if (status) {
1271 dev_err(&port->dev,
1272 "%s - get port status command failed, %d\n",
1273 __func__, status);
1274 goto free_data;
1275 }
1276
1277 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1278
1279 *lsr = data->bLSR;
1280
1281 free_data:
1282 kfree(data);
1283 return status;
1284 }
1285
1286
1287 static int ti_get_serial_info(struct ti_port *tport,
1288 struct serial_struct __user *ret_arg)
1289 {
1290 struct usb_serial_port *port = tport->tp_port;
1291 struct serial_struct ret_serial;
1292 unsigned cwait;
1293
1294 if (!ret_arg)
1295 return -EFAULT;
1296
1297 cwait = port->port.closing_wait;
1298 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1299 cwait = jiffies_to_msecs(cwait) / 10;
1300
1301 memset(&ret_serial, 0, sizeof(ret_serial));
1302
1303 ret_serial.type = PORT_16550A;
1304 ret_serial.line = port->serial->minor;
1305 ret_serial.port = port->number - port->serial->minor;
1306 ret_serial.flags = tport->tp_flags;
1307 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1308 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1309 ret_serial.closing_wait = cwait;
1310
1311 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1312 return -EFAULT;
1313
1314 return 0;
1315 }
1316
1317
1318 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1319 struct serial_struct __user *new_arg)
1320 {
1321 struct serial_struct new_serial;
1322 unsigned cwait;
1323
1324 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1325 return -EFAULT;
1326
1327 cwait = new_serial.closing_wait;
1328 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1329 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1330
1331 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1332 tport->tp_port->port.closing_wait = cwait;
1333
1334 return 0;
1335 }
1336
1337
1338 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1339 {
1340 struct async_icount *icount;
1341 struct tty_struct *tty;
1342 unsigned long flags;
1343
1344 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1345
1346 if (msr & TI_MSR_DELTA_MASK) {
1347 spin_lock_irqsave(&tport->tp_lock, flags);
1348 icount = &tport->tp_port->icount;
1349 if (msr & TI_MSR_DELTA_CTS)
1350 icount->cts++;
1351 if (msr & TI_MSR_DELTA_DSR)
1352 icount->dsr++;
1353 if (msr & TI_MSR_DELTA_CD)
1354 icount->dcd++;
1355 if (msr & TI_MSR_DELTA_RI)
1356 icount->rng++;
1357 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1358 spin_unlock_irqrestore(&tport->tp_lock, flags);
1359 }
1360
1361 tport->tp_msr = msr & TI_MSR_MASK;
1362
1363 /* handle CTS flow control */
1364 tty = tty_port_tty_get(&tport->tp_port->port);
1365 if (tty && C_CRTSCTS(tty)) {
1366 if (msr & TI_MSR_CTS) {
1367 tty->hw_stopped = 0;
1368 tty_wakeup(tty);
1369 } else {
1370 tty->hw_stopped = 1;
1371 }
1372 }
1373 tty_kref_put(tty);
1374 }
1375
1376
1377 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1378 {
1379 unsigned long flags;
1380
1381 spin_lock_irqsave(&tport->tp_lock, flags);
1382
1383 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1384 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1385
1386 spin_unlock_irqrestore(&tport->tp_lock, flags);
1387 }
1388
1389
1390 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1391 {
1392 struct urb *urb;
1393 int status = 0;
1394 unsigned long flags;
1395
1396 spin_lock_irqsave(&tport->tp_lock, flags);
1397
1398 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1399 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1400 urb = tport->tp_port->read_urb;
1401 spin_unlock_irqrestore(&tport->tp_lock, flags);
1402 urb->context = tport;
1403 status = usb_submit_urb(urb, GFP_KERNEL);
1404 } else {
1405 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1406 spin_unlock_irqrestore(&tport->tp_lock, flags);
1407 }
1408
1409 return status;
1410 }
1411
1412
1413 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1414 __u16 moduleid, __u16 value, __u8 *data, int size)
1415 {
1416 int status;
1417
1418 status = usb_control_msg(tdev->td_serial->dev,
1419 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1420 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1421 value, moduleid, data, size, 1000);
1422
1423 if (status == size)
1424 status = 0;
1425
1426 if (status > 0)
1427 status = -ECOMM;
1428
1429 return status;
1430 }
1431
1432
1433 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1434 __u16 moduleid, __u16 value, __u8 *data, int size)
1435 {
1436 int status;
1437
1438 status = usb_control_msg(tdev->td_serial->dev,
1439 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1440 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1441 value, moduleid, data, size, 1000);
1442
1443 if (status == size)
1444 status = 0;
1445
1446 if (status > 0)
1447 status = -ECOMM;
1448
1449 return status;
1450 }
1451
1452
1453 static int ti_write_byte(struct usb_serial_port *port,
1454 struct ti_device *tdev, unsigned long addr,
1455 __u8 mask, __u8 byte)
1456 {
1457 int status;
1458 unsigned int size;
1459 struct ti_write_data_bytes *data;
1460
1461 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1462 addr, mask, byte);
1463
1464 size = sizeof(struct ti_write_data_bytes) + 2;
1465 data = kmalloc(size, GFP_KERNEL);
1466 if (!data) {
1467 dev_err(&port->dev, "%s - out of memory\n", __func__);
1468 return -ENOMEM;
1469 }
1470
1471 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1472 data->bDataType = TI_RW_DATA_BYTE;
1473 data->bDataCounter = 1;
1474 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1475 data->wBaseAddrLo = cpu_to_be16(addr);
1476 data->bData[0] = mask;
1477 data->bData[1] = byte;
1478
1479 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1480 (__u8 *)data, size);
1481
1482 if (status < 0)
1483 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1484
1485 kfree(data);
1486
1487 return status;
1488 }
1489
1490 static int ti_do_download(struct usb_device *dev, int pipe,
1491 u8 *buffer, int size)
1492 {
1493 int pos;
1494 u8 cs = 0;
1495 int done;
1496 struct ti_firmware_header *header;
1497 int status = 0;
1498 int len;
1499
1500 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1501 cs = (__u8)(cs + buffer[pos]);
1502
1503 header = (struct ti_firmware_header *)buffer;
1504 header->wLength = cpu_to_le16((__u16)(size
1505 - sizeof(struct ti_firmware_header)));
1506 header->bCheckSum = cs;
1507
1508 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1509 for (pos = 0; pos < size; pos += done) {
1510 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1511 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1512 &done, 1000);
1513 if (status)
1514 break;
1515 }
1516 return status;
1517 }
1518
1519 static int ti_download_firmware(struct ti_device *tdev)
1520 {
1521 int status;
1522 int buffer_size;
1523 __u8 *buffer;
1524 struct usb_device *dev = tdev->td_serial->dev;
1525 unsigned int pipe = usb_sndbulkpipe(dev,
1526 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1527 const struct firmware *fw_p;
1528 char buf[32];
1529
1530 /* try ID specific firmware first, then try generic firmware */
1531 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1532 dev->descriptor.idProduct);
1533 status = request_firmware(&fw_p, buf, &dev->dev);
1534
1535 if (status != 0) {
1536 buf[0] = '\0';
1537 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1538 switch (dev->descriptor.idProduct) {
1539 case MTS_CDMA_PRODUCT_ID:
1540 strcpy(buf, "mts_cdma.fw");
1541 break;
1542 case MTS_GSM_PRODUCT_ID:
1543 strcpy(buf, "mts_gsm.fw");
1544 break;
1545 case MTS_EDGE_PRODUCT_ID:
1546 strcpy(buf, "mts_edge.fw");
1547 break;
1548 case MTS_MT9234MU_PRODUCT_ID:
1549 strcpy(buf, "mts_mt9234mu.fw");
1550 break;
1551 case MTS_MT9234ZBA_PRODUCT_ID:
1552 strcpy(buf, "mts_mt9234zba.fw");
1553 break;
1554 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1555 strcpy(buf, "mts_mt9234zba.fw");
1556 break; }
1557 }
1558 if (buf[0] == '\0') {
1559 if (tdev->td_is_3410)
1560 strcpy(buf, "ti_3410.fw");
1561 else
1562 strcpy(buf, "ti_5052.fw");
1563 }
1564 status = request_firmware(&fw_p, buf, &dev->dev);
1565 }
1566 if (status) {
1567 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1568 return -ENOENT;
1569 }
1570 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1571 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1572 release_firmware(fw_p);
1573 return -ENOENT;
1574 }
1575
1576 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1577 buffer = kmalloc(buffer_size, GFP_KERNEL);
1578 if (buffer) {
1579 memcpy(buffer, fw_p->data, fw_p->size);
1580 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1581 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1582 kfree(buffer);
1583 } else {
1584 dev_dbg(&dev->dev, "%s ENOMEM\n", __func__);
1585 status = -ENOMEM;
1586 }
1587 release_firmware(fw_p);
1588 if (status) {
1589 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1590 __func__, status);
1591 return status;
1592 }
1593
1594 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1595
1596 return 0;
1597 }
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