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