3 * TI 3410/5052 USB Serial Driver
5 * Copyright (C) 2004 Texas Instruments
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
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.
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>.
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>
39 #include "ti_usb_3410_5052.h"
43 #define TI_DRIVER_VERSION "v0.10"
44 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
45 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
47 #define TI_FIRMWARE_BUF_SIZE 16284
49 #define TI_WRITE_BUF_SIZE 1024
51 #define TI_TRANSFER_TIMEOUT 2
53 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
55 /* supported setserial flags */
56 #define TI_SET_SERIAL_FLAGS 0
59 #define TI_READ_URB_RUNNING 0
60 #define TI_READ_URB_STOPPING 1
61 #define TI_READ_URB_STOPPED 2
63 #define TI_EXTRA_VID_PID_COUNT 5
73 __u8 tp_uart_mode; /* 232 or 485 modes */
74 unsigned int tp_uart_base_addr;
76 int tp_closing_wait;/* in .01 secs */
77 struct async_icount tp_icount;
78 wait_queue_head_t tp_msr_wait; /* wait for msr change */
79 wait_queue_head_t tp_write_wait;
80 struct ti_device *tp_tdev;
81 struct usb_serial_port *tp_port;
83 int tp_read_urb_state;
84 int tp_write_urb_in_use;
85 struct kfifo write_fifo;
89 struct mutex td_open_close_lock;
90 int td_open_port_count;
91 struct usb_serial *td_serial;
97 /* Function Declarations */
99 static int ti_startup(struct usb_serial *serial);
100 static void ti_release(struct usb_serial *serial);
101 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
102 static void ti_close(struct usb_serial_port *port);
103 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
104 const unsigned char *data, int count);
105 static int ti_write_room(struct tty_struct *tty);
106 static int ti_chars_in_buffer(struct tty_struct *tty);
107 static void ti_throttle(struct tty_struct *tty);
108 static void ti_unthrottle(struct tty_struct *tty);
109 static int ti_ioctl(struct tty_struct *tty, struct file *file,
110 unsigned int cmd, unsigned long arg);
111 static void ti_set_termios(struct tty_struct *tty,
112 struct usb_serial_port *port, struct ktermios *old_termios);
113 static int ti_tiocmget(struct tty_struct *tty, struct file *file);
114 static int ti_tiocmset(struct tty_struct *tty, struct file *file,
115 unsigned int set, unsigned int clear);
116 static void ti_break(struct tty_struct *tty, int break_state);
117 static void ti_interrupt_callback(struct urb *urb);
118 static void ti_bulk_in_callback(struct urb *urb);
119 static void ti_bulk_out_callback(struct urb *urb);
121 static void ti_recv(struct device *dev, struct tty_struct *tty,
122 unsigned char *data, int length);
123 static void ti_send(struct ti_port *tport);
124 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
125 static int ti_get_lsr(struct ti_port *tport);
126 static int ti_get_serial_info(struct ti_port *tport,
127 struct serial_struct __user *ret_arg);
128 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
129 struct serial_struct __user *new_arg);
130 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
132 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
134 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
135 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
137 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
138 __u16 moduleid, __u16 value, __u8 *data, int size);
139 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
140 __u16 moduleid, __u16 value, __u8 *data, int size);
142 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
143 __u8 mask, __u8 byte);
145 static int ti_download_firmware(struct ti_device *tdev);
150 /* module parameters */
152 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
153 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
154 static unsigned int vendor_3410_count;
155 static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
156 static unsigned int product_3410_count;
157 static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
158 static unsigned int vendor_5052_count;
159 static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
160 static unsigned int product_5052_count;
162 /* supported devices */
163 /* the array dimension is the number of default entries plus */
164 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
166 static struct usb_device_id ti_id_table_3410[13+TI_EXTRA_VID_PID_COUNT+1] = {
167 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
168 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
169 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
170 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
171 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
172 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
173 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
174 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
175 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
176 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
177 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
178 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
179 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
182 static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
183 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
184 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
185 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
186 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
189 static struct usb_device_id ti_id_table_combined[17+2*TI_EXTRA_VID_PID_COUNT+1] = {
190 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
191 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
192 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
193 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
194 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
195 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
196 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
197 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
198 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
200 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
201 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
202 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
203 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
204 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
205 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
206 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
210 static struct usb_driver ti_usb_driver = {
211 .name = "ti_usb_3410_5052",
212 .probe = usb_serial_probe,
213 .disconnect = usb_serial_disconnect,
214 .id_table = ti_id_table_combined,
218 static struct usb_serial_driver ti_1port_device = {
220 .owner = THIS_MODULE,
221 .name = "ti_usb_3410_5052_1",
223 .description = "TI USB 3410 1 port adapter",
224 .usb_driver = &ti_usb_driver,
225 .id_table = ti_id_table_3410,
227 .attach = ti_startup,
228 .release = ti_release,
232 .write_room = ti_write_room,
233 .chars_in_buffer = ti_chars_in_buffer,
234 .throttle = ti_throttle,
235 .unthrottle = ti_unthrottle,
237 .set_termios = ti_set_termios,
238 .tiocmget = ti_tiocmget,
239 .tiocmset = ti_tiocmset,
240 .break_ctl = ti_break,
241 .read_int_callback = ti_interrupt_callback,
242 .read_bulk_callback = ti_bulk_in_callback,
243 .write_bulk_callback = ti_bulk_out_callback,
246 static struct usb_serial_driver ti_2port_device = {
248 .owner = THIS_MODULE,
249 .name = "ti_usb_3410_5052_2",
251 .description = "TI USB 5052 2 port adapter",
252 .usb_driver = &ti_usb_driver,
253 .id_table = ti_id_table_5052,
255 .attach = ti_startup,
256 .release = ti_release,
260 .write_room = ti_write_room,
261 .chars_in_buffer = ti_chars_in_buffer,
262 .throttle = ti_throttle,
263 .unthrottle = ti_unthrottle,
265 .set_termios = ti_set_termios,
266 .tiocmget = ti_tiocmget,
267 .tiocmset = ti_tiocmset,
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,
277 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
278 MODULE_DESCRIPTION(TI_DRIVER_DESC);
279 MODULE_VERSION(TI_DRIVER_VERSION);
280 MODULE_LICENSE("GPL");
282 MODULE_FIRMWARE("ti_3410.fw");
283 MODULE_FIRMWARE("ti_5052.fw");
284 MODULE_FIRMWARE("mts_cdma.fw");
285 MODULE_FIRMWARE("mts_gsm.fw");
286 MODULE_FIRMWARE("mts_edge.fw");
287 MODULE_FIRMWARE("mts_mt9234mu.fw");
288 MODULE_FIRMWARE("mts_mt9234zba.fw");
290 module_param(debug, bool, S_IRUGO | S_IWUSR);
291 MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
293 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
294 MODULE_PARM_DESC(closing_wait,
295 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
297 module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
298 MODULE_PARM_DESC(vendor_3410,
299 "Vendor ids for 3410 based devices, 1-5 short integers");
300 module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
301 MODULE_PARM_DESC(product_3410,
302 "Product ids for 3410 based devices, 1-5 short integers");
303 module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
304 MODULE_PARM_DESC(vendor_5052,
305 "Vendor ids for 5052 based devices, 1-5 short integers");
306 module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
307 MODULE_PARM_DESC(product_5052,
308 "Product ids for 5052 based devices, 1-5 short integers");
310 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
315 static int __init ti_init(void)
320 /* insert extra vendor and product ids */
321 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
322 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
323 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
324 ti_id_table_3410[j].idVendor = vendor_3410[i];
325 ti_id_table_3410[j].idProduct = product_3410[i];
326 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
327 ti_id_table_combined[c].idVendor = vendor_3410[i];
328 ti_id_table_combined[c].idProduct = product_3410[i];
329 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
331 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
332 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
333 ti_id_table_5052[j].idVendor = vendor_5052[i];
334 ti_id_table_5052[j].idProduct = product_5052[i];
335 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
336 ti_id_table_combined[c].idVendor = vendor_5052[i];
337 ti_id_table_combined[c].idProduct = product_5052[i];
338 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
341 ret = usb_serial_register(&ti_1port_device);
344 ret = usb_serial_register(&ti_2port_device);
348 ret = usb_register(&ti_usb_driver);
352 printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":"
353 TI_DRIVER_DESC "\n");
358 usb_serial_deregister(&ti_2port_device);
360 usb_serial_deregister(&ti_1port_device);
366 static void __exit ti_exit(void)
368 usb_serial_deregister(&ti_1port_device);
369 usb_serial_deregister(&ti_2port_device);
370 usb_deregister(&ti_usb_driver);
374 module_init(ti_init);
375 module_exit(ti_exit);
378 static int ti_startup(struct usb_serial *serial)
380 struct ti_device *tdev;
381 struct ti_port *tport;
382 struct usb_device *dev = serial->dev;
387 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
388 __func__, le16_to_cpu(dev->descriptor.idProduct),
389 dev->descriptor.bNumConfigurations,
390 dev->actconfig->desc.bConfigurationValue);
392 /* create device structure */
393 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
395 dev_err(&dev->dev, "%s - out of memory\n", __func__);
398 mutex_init(&tdev->td_open_close_lock);
399 tdev->td_serial = serial;
400 usb_set_serial_data(serial, tdev);
402 /* determine device type */
403 if (usb_match_id(serial->interface, ti_id_table_3410))
404 tdev->td_is_3410 = 1;
405 dbg("%s - device type is %s", __func__,
406 tdev->td_is_3410 ? "3410" : "5052");
408 /* if we have only 1 configuration, download firmware */
409 if (dev->descriptor.bNumConfigurations == 1) {
410 if ((status = ti_download_firmware(tdev)) != 0)
413 /* 3410 must be reset, 5052 resets itself */
414 if (tdev->td_is_3410) {
415 msleep_interruptible(100);
416 usb_reset_device(dev);
423 /* the second configuration must be set */
424 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
425 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
426 status = status ? status : -ENODEV;
430 /* set up port structures */
431 for (i = 0; i < serial->num_ports; ++i) {
432 tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL);
434 dev_err(&dev->dev, "%s - out of memory\n", __func__);
438 spin_lock_init(&tport->tp_lock);
439 tport->tp_uart_base_addr = (i == 0 ?
440 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
441 tport->tp_closing_wait = closing_wait;
442 init_waitqueue_head(&tport->tp_msr_wait);
443 init_waitqueue_head(&tport->tp_write_wait);
444 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE,
446 dev_err(&dev->dev, "%s - out of memory\n", __func__);
451 tport->tp_port = serial->port[i];
452 tport->tp_tdev = tdev;
453 usb_set_serial_port_data(serial->port[i], tport);
454 tport->tp_uart_mode = 0; /* default is RS232 */
460 for (--i; i >= 0; --i) {
461 tport = usb_get_serial_port_data(serial->port[i]);
462 kfifo_free(&tport->write_fifo);
464 usb_set_serial_port_data(serial->port[i], NULL);
468 usb_set_serial_data(serial, NULL);
473 static void ti_release(struct usb_serial *serial)
476 struct ti_device *tdev = usb_get_serial_data(serial);
477 struct ti_port *tport;
481 for (i = 0; i < serial->num_ports; ++i) {
482 tport = usb_get_serial_port_data(serial->port[i]);
484 kfifo_free(&tport->write_fifo);
493 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
495 struct ti_port *tport = usb_get_serial_port_data(port);
496 struct ti_device *tdev;
497 struct usb_device *dev;
501 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
502 TI_PIPE_TIMEOUT_ENABLE |
503 (TI_TRANSFER_TIMEOUT << 2));
505 dbg("%s - port %d", __func__, port->number);
510 dev = port->serial->dev;
511 tdev = tport->tp_tdev;
513 /* only one open on any port on a device at a time */
514 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
517 port_number = port->number - port->serial->minor;
519 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
522 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
524 /* start interrupt urb the first time a port is opened on this device */
525 if (tdev->td_open_port_count == 0) {
526 dbg("%s - start interrupt in urb", __func__);
527 urb = tdev->td_serial->port[0]->interrupt_in_urb;
529 dev_err(&port->dev, "%s - no interrupt urb\n",
534 urb->complete = ti_interrupt_callback;
537 status = usb_submit_urb(urb, GFP_KERNEL);
540 "%s - submit interrupt urb failed, %d\n",
547 ti_set_termios(tty, port, tty->termios);
549 dbg("%s - sending TI_OPEN_PORT", __func__);
550 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
551 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
553 dev_err(&port->dev, "%s - cannot send open command, %d\n",
558 dbg("%s - sending TI_START_PORT", __func__);
559 status = ti_command_out_sync(tdev, TI_START_PORT,
560 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
562 dev_err(&port->dev, "%s - cannot send start command, %d\n",
567 dbg("%s - sending TI_PURGE_PORT", __func__);
568 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
569 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
571 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
575 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
576 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
578 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
583 /* reset the data toggle on the bulk endpoints to work around bug in
584 * host controllers where things get out of sync some times */
585 usb_clear_halt(dev, port->write_urb->pipe);
586 usb_clear_halt(dev, port->read_urb->pipe);
589 ti_set_termios(tty, port, tty->termios);
591 dbg("%s - sending TI_OPEN_PORT (2)", __func__);
592 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
593 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
595 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
600 dbg("%s - sending TI_START_PORT (2)", __func__);
601 status = ti_command_out_sync(tdev, TI_START_PORT,
602 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
604 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
610 dbg("%s - start read urb", __func__);
611 urb = port->read_urb;
613 dev_err(&port->dev, "%s - no read urb\n", __func__);
617 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
618 urb->complete = ti_bulk_in_callback;
619 urb->context = tport;
621 status = usb_submit_urb(urb, GFP_KERNEL);
623 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
628 tport->tp_is_open = 1;
629 ++tdev->td_open_port_count;
634 if (tdev->td_open_port_count == 0)
635 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
637 mutex_unlock(&tdev->td_open_close_lock);
638 dbg("%s - exit %d", __func__, status);
643 static void ti_close(struct usb_serial_port *port)
645 struct ti_device *tdev;
646 struct ti_port *tport;
651 dbg("%s - port %d", __func__, port->number);
653 tdev = usb_get_serial_data(port->serial);
654 tport = usb_get_serial_port_data(port);
655 if (tdev == NULL || tport == NULL)
658 tport->tp_is_open = 0;
660 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
662 usb_kill_urb(port->read_urb);
663 usb_kill_urb(port->write_urb);
664 tport->tp_write_urb_in_use = 0;
666 port_number = port->number - port->serial->minor;
668 dbg("%s - sending TI_CLOSE_PORT", __func__);
669 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
670 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
673 "%s - cannot send close port command, %d\n"
676 /* if mutex_lock is interrupted, continue anyway */
677 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
678 --tport->tp_tdev->td_open_port_count;
679 if (tport->tp_tdev->td_open_port_count <= 0) {
680 /* last port is closed, shut down interrupt urb */
681 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
682 tport->tp_tdev->td_open_port_count = 0;
685 mutex_unlock(&tdev->td_open_close_lock);
687 dbg("%s - exit", __func__);
691 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
692 const unsigned char *data, int count)
694 struct ti_port *tport = usb_get_serial_port_data(port);
696 dbg("%s - port %d", __func__, port->number);
699 dbg("%s - write request of 0 bytes", __func__);
703 if (tport == NULL || !tport->tp_is_open)
706 count = kfifo_in_locked(&tport->write_fifo, data, count,
714 static int ti_write_room(struct tty_struct *tty)
716 struct usb_serial_port *port = tty->driver_data;
717 struct ti_port *tport = usb_get_serial_port_data(port);
721 dbg("%s - port %d", __func__, port->number);
726 spin_lock_irqsave(&tport->tp_lock, flags);
727 room = kfifo_avail(&tport->write_fifo);
728 spin_unlock_irqrestore(&tport->tp_lock, flags);
730 dbg("%s - returns %d", __func__, room);
735 static int ti_chars_in_buffer(struct tty_struct *tty)
737 struct usb_serial_port *port = tty->driver_data;
738 struct ti_port *tport = usb_get_serial_port_data(port);
742 dbg("%s - port %d", __func__, port->number);
747 spin_lock_irqsave(&tport->tp_lock, flags);
748 chars = kfifo_len(&tport->write_fifo);
749 spin_unlock_irqrestore(&tport->tp_lock, flags);
751 dbg("%s - returns %d", __func__, chars);
756 static void ti_throttle(struct tty_struct *tty)
758 struct usb_serial_port *port = tty->driver_data;
759 struct ti_port *tport = usb_get_serial_port_data(port);
761 dbg("%s - port %d", __func__, port->number);
766 if (I_IXOFF(tty) || C_CRTSCTS(tty))
767 ti_stop_read(tport, tty);
772 static void ti_unthrottle(struct tty_struct *tty)
774 struct usb_serial_port *port = tty->driver_data;
775 struct ti_port *tport = usb_get_serial_port_data(port);
778 dbg("%s - port %d", __func__, port->number);
783 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
784 status = ti_restart_read(tport, tty);
786 dev_err(&port->dev, "%s - cannot restart read, %d\n",
792 static int ti_ioctl(struct tty_struct *tty, struct file *file,
793 unsigned int cmd, unsigned long arg)
795 struct usb_serial_port *port = tty->driver_data;
796 struct ti_port *tport = usb_get_serial_port_data(port);
797 struct async_icount cnow;
798 struct async_icount cprev;
800 dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
807 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
808 return ti_get_serial_info(tport,
809 (struct serial_struct __user *)arg);
811 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
812 return ti_set_serial_info(tty, tport,
813 (struct serial_struct __user *)arg);
815 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
816 cprev = tport->tp_icount;
818 interruptible_sleep_on(&tport->tp_msr_wait);
819 if (signal_pending(current))
821 cnow = tport->tp_icount;
822 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
823 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
824 return -EIO; /* no change => error */
825 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
826 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
827 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
828 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
834 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
835 __func__, port->number,
836 tport->tp_icount.rx, tport->tp_icount.tx);
837 if (copy_to_user((void __user *)arg, &tport->tp_icount,
838 sizeof(tport->tp_icount)))
846 static void ti_set_termios(struct tty_struct *tty,
847 struct usb_serial_port *port, struct ktermios *old_termios)
849 struct ti_port *tport = usb_get_serial_port_data(port);
850 struct ti_uart_config *config;
851 tcflag_t cflag, iflag;
854 int port_number = port->number - port->serial->minor;
857 dbg("%s - port %d", __func__, port->number);
859 cflag = tty->termios->c_cflag;
860 iflag = tty->termios->c_iflag;
862 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
863 dbg("%s - old clfag %08x, old iflag %08x", __func__,
864 old_termios->c_cflag, old_termios->c_iflag);
869 config = kmalloc(sizeof(*config), GFP_KERNEL);
871 dev_err(&port->dev, "%s - out of memory\n", __func__);
877 /* these flags must be set */
878 config->wFlags |= TI_UART_ENABLE_MS_INTS;
879 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
880 config->bUartMode = (__u8)(tport->tp_uart_mode);
882 switch (cflag & CSIZE) {
884 config->bDataBits = TI_UART_5_DATA_BITS;
887 config->bDataBits = TI_UART_6_DATA_BITS;
890 config->bDataBits = TI_UART_7_DATA_BITS;
894 config->bDataBits = TI_UART_8_DATA_BITS;
898 /* CMSPAR isn't supported by this driver */
899 tty->termios->c_cflag &= ~CMSPAR;
901 if (cflag & PARENB) {
902 if (cflag & PARODD) {
903 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
904 config->bParity = TI_UART_ODD_PARITY;
906 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
907 config->bParity = TI_UART_EVEN_PARITY;
910 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
911 config->bParity = TI_UART_NO_PARITY;
915 config->bStopBits = TI_UART_2_STOP_BITS;
917 config->bStopBits = TI_UART_1_STOP_BITS;
919 if (cflag & CRTSCTS) {
920 /* RTS flow control must be off to drop RTS for baud rate B0 */
921 if ((cflag & CBAUD) != B0)
922 config->wFlags |= TI_UART_ENABLE_RTS_IN;
923 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
926 ti_restart_read(tport, tty);
929 if (I_IXOFF(tty) || I_IXON(tty)) {
930 config->cXon = START_CHAR(tty);
931 config->cXoff = STOP_CHAR(tty);
934 config->wFlags |= TI_UART_ENABLE_X_IN;
936 ti_restart_read(tport, tty);
939 config->wFlags |= TI_UART_ENABLE_X_OUT;
942 baud = tty_get_baud_rate(tty);
945 if (tport->tp_tdev->td_is_3410)
946 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
948 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
950 /* FIXME: Should calculate resulting baud here and report it back */
951 if ((cflag & CBAUD) != B0)
952 tty_encode_baud_rate(tty, baud, baud);
954 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
955 __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
957 cpu_to_be16s(&config->wBaudRate);
958 cpu_to_be16s(&config->wFlags);
960 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
961 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
964 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
965 __func__, port_number, status);
967 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
968 mcr = tport->tp_shadow_mcr;
969 /* if baud rate is B0, clear RTS and DTR */
970 if ((cflag & CBAUD) == B0)
971 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
972 status = ti_set_mcr(tport, mcr);
975 "%s - cannot set modem control on port %d, %d\n",
976 __func__, port_number, status);
982 static int ti_tiocmget(struct tty_struct *tty, struct file *file)
984 struct usb_serial_port *port = tty->driver_data;
985 struct ti_port *tport = usb_get_serial_port_data(port);
991 dbg("%s - port %d", __func__, port->number);
996 spin_lock_irqsave(&tport->tp_lock, flags);
998 mcr = tport->tp_shadow_mcr;
999 spin_unlock_irqrestore(&tport->tp_lock, flags);
1001 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1002 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1003 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1004 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1005 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1006 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1007 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1009 dbg("%s - 0x%04X", __func__, result);
1015 static int ti_tiocmset(struct tty_struct *tty, struct file *file,
1016 unsigned int set, unsigned int clear)
1018 struct usb_serial_port *port = tty->driver_data;
1019 struct ti_port *tport = usb_get_serial_port_data(port);
1021 unsigned long flags;
1023 dbg("%s - port %d", __func__, port->number);
1028 spin_lock_irqsave(&tport->tp_lock, flags);
1029 mcr = tport->tp_shadow_mcr;
1031 if (set & TIOCM_RTS)
1033 if (set & TIOCM_DTR)
1035 if (set & TIOCM_LOOP)
1038 if (clear & TIOCM_RTS)
1040 if (clear & TIOCM_DTR)
1042 if (clear & TIOCM_LOOP)
1043 mcr &= ~TI_MCR_LOOP;
1044 spin_unlock_irqrestore(&tport->tp_lock, flags);
1046 return ti_set_mcr(tport, mcr);
1050 static void ti_break(struct tty_struct *tty, int break_state)
1052 struct usb_serial_port *port = tty->driver_data;
1053 struct ti_port *tport = usb_get_serial_port_data(port);
1056 dbg("%s - state = %d", __func__, break_state);
1061 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1063 status = ti_write_byte(tport->tp_tdev,
1064 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1065 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1068 dbg("%s - error setting break, %d", __func__, status);
1072 static void ti_interrupt_callback(struct urb *urb)
1074 struct ti_device *tdev = urb->context;
1075 struct usb_serial_port *port;
1076 struct usb_serial *serial = tdev->td_serial;
1077 struct ti_port *tport;
1078 struct device *dev = &urb->dev->dev;
1079 unsigned char *data = urb->transfer_buffer;
1080 int length = urb->actual_length;
1083 int status = urb->status;
1087 dbg("%s", __func__);
1095 dbg("%s - urb shutting down, %d", __func__, status);
1096 tdev->td_urb_error = 1;
1099 dev_err(dev, "%s - nonzero urb status, %d\n",
1101 tdev->td_urb_error = 1;
1106 dbg("%s - bad packet size, %d", __func__, length);
1110 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1111 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1115 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1116 function = TI_GET_FUNC_FROM_CODE(data[0]);
1118 dbg("%s - port_number %d, function %d, data 0x%02X",
1119 __func__, port_number, function, data[1]);
1121 if (port_number >= serial->num_ports) {
1122 dev_err(dev, "%s - bad port number, %d\n",
1123 __func__, port_number);
1127 port = serial->port[port_number];
1129 tport = usb_get_serial_port_data(port);
1134 case TI_CODE_DATA_ERROR:
1135 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1136 __func__, port_number, data[1]);
1139 case TI_CODE_MODEM_STATUS:
1141 dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr);
1142 ti_handle_new_msr(tport, msr);
1146 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1152 retval = usb_submit_urb(urb, GFP_ATOMIC);
1154 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1159 static void ti_bulk_in_callback(struct urb *urb)
1161 struct ti_port *tport = urb->context;
1162 struct usb_serial_port *port = tport->tp_port;
1163 struct device *dev = &urb->dev->dev;
1164 int status = urb->status;
1166 struct tty_struct *tty;
1168 dbg("%s", __func__);
1176 dbg("%s - urb shutting down, %d", __func__, status);
1177 tport->tp_tdev->td_urb_error = 1;
1178 wake_up_interruptible(&tport->tp_write_wait);
1181 dev_err(dev, "%s - nonzero urb status, %d\n",
1183 tport->tp_tdev->td_urb_error = 1;
1184 wake_up_interruptible(&tport->tp_write_wait);
1187 if (status == -EPIPE)
1191 dev_err(dev, "%s - stopping read!\n", __func__);
1195 tty = tty_port_tty_get(&port->port);
1197 if (urb->actual_length) {
1198 usb_serial_debug_data(debug, dev, __func__,
1199 urb->actual_length, urb->transfer_buffer);
1201 if (!tport->tp_is_open)
1202 dbg("%s - port closed, dropping data",
1205 ti_recv(&urb->dev->dev, tty,
1206 urb->transfer_buffer,
1207 urb->actual_length);
1208 spin_lock(&tport->tp_lock);
1209 tport->tp_icount.rx += urb->actual_length;
1210 spin_unlock(&tport->tp_lock);
1216 /* continue to read unless stopping */
1217 spin_lock(&tport->tp_lock);
1218 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
1219 urb->dev = port->serial->dev;
1220 retval = usb_submit_urb(urb, GFP_ATOMIC);
1221 } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
1222 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1224 spin_unlock(&tport->tp_lock);
1226 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1231 static void ti_bulk_out_callback(struct urb *urb)
1233 struct ti_port *tport = urb->context;
1234 struct usb_serial_port *port = tport->tp_port;
1235 struct device *dev = &urb->dev->dev;
1236 int status = urb->status;
1238 dbg("%s - port %d", __func__, port->number);
1240 tport->tp_write_urb_in_use = 0;
1248 dbg("%s - urb shutting down, %d", __func__, status);
1249 tport->tp_tdev->td_urb_error = 1;
1250 wake_up_interruptible(&tport->tp_write_wait);
1253 dev_err(dev, "%s - nonzero urb status, %d\n",
1255 tport->tp_tdev->td_urb_error = 1;
1256 wake_up_interruptible(&tport->tp_write_wait);
1259 /* send any buffered data */
1264 static void ti_recv(struct device *dev, struct tty_struct *tty,
1265 unsigned char *data, int length)
1270 cnt = tty_insert_flip_string(tty, data, length);
1272 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1273 __func__, length - cnt);
1277 tty_flip_buffer_push(tty);
1280 } while (length > 0);
1285 static void ti_send(struct ti_port *tport)
1288 struct usb_serial_port *port = tport->tp_port;
1289 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1290 unsigned long flags;
1293 dbg("%s - port %d", __func__, port->number);
1295 spin_lock_irqsave(&tport->tp_lock, flags);
1297 if (tport->tp_write_urb_in_use)
1300 count = kfifo_out(&tport->write_fifo,
1301 port->write_urb->transfer_buffer,
1302 port->bulk_out_size);
1307 tport->tp_write_urb_in_use = 1;
1309 spin_unlock_irqrestore(&tport->tp_lock, flags);
1311 usb_serial_debug_data(debug, &port->dev, __func__, count,
1312 port->write_urb->transfer_buffer);
1314 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1315 usb_sndbulkpipe(port->serial->dev,
1316 port->bulk_out_endpointAddress),
1317 port->write_urb->transfer_buffer, count,
1318 ti_bulk_out_callback, tport);
1320 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1322 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1324 tport->tp_write_urb_in_use = 0;
1325 /* TODO: reschedule ti_send */
1327 spin_lock_irqsave(&tport->tp_lock, flags);
1328 tport->tp_icount.tx += count;
1329 spin_unlock_irqrestore(&tport->tp_lock, flags);
1332 /* more room in the buffer for new writes, wakeup */
1336 wake_up_interruptible(&tport->tp_write_wait);
1339 spin_unlock_irqrestore(&tport->tp_lock, flags);
1345 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1347 unsigned long flags;
1350 status = ti_write_byte(tport->tp_tdev,
1351 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1352 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1354 spin_lock_irqsave(&tport->tp_lock, flags);
1356 tport->tp_shadow_mcr = mcr;
1357 spin_unlock_irqrestore(&tport->tp_lock, flags);
1363 static int ti_get_lsr(struct ti_port *tport)
1366 struct ti_device *tdev = tport->tp_tdev;
1367 struct usb_serial_port *port = tport->tp_port;
1368 int port_number = port->number - port->serial->minor;
1369 struct ti_port_status *data;
1371 dbg("%s - port %d", __func__, port->number);
1373 size = sizeof(struct ti_port_status);
1374 data = kmalloc(size, GFP_KERNEL);
1376 dev_err(&port->dev, "%s - out of memory\n", __func__);
1380 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1381 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1384 "%s - get port status command failed, %d\n",
1389 dbg("%s - lsr 0x%02X", __func__, data->bLSR);
1391 tport->tp_lsr = data->bLSR;
1399 static int ti_get_serial_info(struct ti_port *tport,
1400 struct serial_struct __user *ret_arg)
1402 struct usb_serial_port *port = tport->tp_port;
1403 struct serial_struct ret_serial;
1408 memset(&ret_serial, 0, sizeof(ret_serial));
1410 ret_serial.type = PORT_16550A;
1411 ret_serial.line = port->serial->minor;
1412 ret_serial.port = port->number - port->serial->minor;
1413 ret_serial.flags = tport->tp_flags;
1414 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1415 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1416 ret_serial.closing_wait = tport->tp_closing_wait;
1418 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1425 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1426 struct serial_struct __user *new_arg)
1428 struct serial_struct new_serial;
1430 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1433 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1434 tport->tp_closing_wait = new_serial.closing_wait;
1440 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1442 struct async_icount *icount;
1443 struct tty_struct *tty;
1444 unsigned long flags;
1446 dbg("%s - msr 0x%02X", __func__, msr);
1448 if (msr & TI_MSR_DELTA_MASK) {
1449 spin_lock_irqsave(&tport->tp_lock, flags);
1450 icount = &tport->tp_icount;
1451 if (msr & TI_MSR_DELTA_CTS)
1453 if (msr & TI_MSR_DELTA_DSR)
1455 if (msr & TI_MSR_DELTA_CD)
1457 if (msr & TI_MSR_DELTA_RI)
1459 wake_up_interruptible(&tport->tp_msr_wait);
1460 spin_unlock_irqrestore(&tport->tp_lock, flags);
1463 tport->tp_msr = msr & TI_MSR_MASK;
1465 /* handle CTS flow control */
1466 tty = tty_port_tty_get(&tport->tp_port->port);
1467 if (tty && C_CRTSCTS(tty)) {
1468 if (msr & TI_MSR_CTS) {
1469 tty->hw_stopped = 0;
1472 tty->hw_stopped = 1;
1479 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1481 struct ti_device *tdev = tport->tp_tdev;
1482 struct usb_serial_port *port = tport->tp_port;
1485 dbg("%s - port %d", __func__, port->number);
1487 spin_lock_irq(&tport->tp_lock);
1489 /* wait for data to drain from the buffer */
1490 tdev->td_urb_error = 0;
1491 init_waitqueue_entry(&wait, current);
1492 add_wait_queue(&tport->tp_write_wait, &wait);
1494 set_current_state(TASK_INTERRUPTIBLE);
1495 if (kfifo_len(&tport->write_fifo) == 0
1496 || timeout == 0 || signal_pending(current)
1497 || tdev->td_urb_error
1498 || port->serial->disconnected) /* disconnect */
1500 spin_unlock_irq(&tport->tp_lock);
1501 timeout = schedule_timeout(timeout);
1502 spin_lock_irq(&tport->tp_lock);
1504 set_current_state(TASK_RUNNING);
1505 remove_wait_queue(&tport->tp_write_wait, &wait);
1507 /* flush any remaining data in the buffer */
1509 kfifo_reset_out(&tport->write_fifo);
1511 spin_unlock_irq(&tport->tp_lock);
1513 mutex_lock(&port->serial->disc_mutex);
1514 /* wait for data to drain from the device */
1515 /* wait for empty tx register, plus 20 ms */
1517 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1518 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1519 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1520 && !port->serial->disconnected) {
1521 if (ti_get_lsr(tport))
1523 mutex_unlock(&port->serial->disc_mutex);
1524 msleep_interruptible(20);
1525 mutex_lock(&port->serial->disc_mutex);
1527 mutex_unlock(&port->serial->disc_mutex);
1531 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1533 unsigned long flags;
1535 spin_lock_irqsave(&tport->tp_lock, flags);
1537 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1538 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1540 spin_unlock_irqrestore(&tport->tp_lock, flags);
1544 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1548 unsigned long flags;
1550 spin_lock_irqsave(&tport->tp_lock, flags);
1552 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1553 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1554 urb = tport->tp_port->read_urb;
1555 spin_unlock_irqrestore(&tport->tp_lock, flags);
1556 urb->complete = ti_bulk_in_callback;
1557 urb->context = tport;
1558 urb->dev = tport->tp_port->serial->dev;
1559 status = usb_submit_urb(urb, GFP_KERNEL);
1561 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1562 spin_unlock_irqrestore(&tport->tp_lock, flags);
1569 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1570 __u16 moduleid, __u16 value, __u8 *data, int size)
1574 status = usb_control_msg(tdev->td_serial->dev,
1575 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1576 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1577 value, moduleid, data, size, 1000);
1589 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1590 __u16 moduleid, __u16 value, __u8 *data, int size)
1594 status = usb_control_msg(tdev->td_serial->dev,
1595 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1596 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1597 value, moduleid, data, size, 1000);
1609 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1610 __u8 mask, __u8 byte)
1614 struct ti_write_data_bytes *data;
1615 struct device *dev = &tdev->td_serial->dev->dev;
1617 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1618 __func__, addr, mask, byte);
1620 size = sizeof(struct ti_write_data_bytes) + 2;
1621 data = kmalloc(size, GFP_KERNEL);
1623 dev_err(dev, "%s - out of memory\n", __func__);
1627 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1628 data->bDataType = TI_RW_DATA_BYTE;
1629 data->bDataCounter = 1;
1630 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1631 data->wBaseAddrLo = cpu_to_be16(addr);
1632 data->bData[0] = mask;
1633 data->bData[1] = byte;
1635 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1636 (__u8 *)data, size);
1639 dev_err(dev, "%s - failed, %d\n", __func__, status);
1646 static int ti_do_download(struct usb_device *dev, int pipe,
1647 u8 *buffer, int size)
1652 struct ti_firmware_header *header;
1656 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1657 cs = (__u8)(cs + buffer[pos]);
1659 header = (struct ti_firmware_header *)buffer;
1660 header->wLength = cpu_to_le16((__u16)(size
1661 - sizeof(struct ti_firmware_header)));
1662 header->bCheckSum = cs;
1664 dbg("%s - downloading firmware", __func__);
1665 for (pos = 0; pos < size; pos += done) {
1666 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1667 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1675 static int ti_download_firmware(struct ti_device *tdev)
1680 struct usb_device *dev = tdev->td_serial->dev;
1681 unsigned int pipe = usb_sndbulkpipe(dev,
1682 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1683 const struct firmware *fw_p;
1686 dbg("%s\n", __func__);
1687 /* try ID specific firmware first, then try generic firmware */
1688 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1689 dev->descriptor.idProduct);
1690 if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) {
1692 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1693 switch (dev->descriptor.idProduct) {
1694 case MTS_CDMA_PRODUCT_ID:
1695 strcpy(buf, "mts_cdma.fw");
1697 case MTS_GSM_PRODUCT_ID:
1698 strcpy(buf, "mts_gsm.fw");
1700 case MTS_EDGE_PRODUCT_ID:
1701 strcpy(buf, "mts_edge.fw");
1703 case MTS_MT9234MU_PRODUCT_ID:
1704 strcpy(buf, "mts_mt9234mu.fw");
1706 case MTS_MT9234ZBA_PRODUCT_ID:
1707 strcpy(buf, "mts_mt9234zba.fw");
1709 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1710 strcpy(buf, "mts_mt9234zba.fw");
1713 if (buf[0] == '\0') {
1714 if (tdev->td_is_3410)
1715 strcpy(buf, "ti_3410.fw");
1717 strcpy(buf, "ti_5052.fw");
1719 status = request_firmware(&fw_p, buf, &dev->dev);
1722 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1725 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1726 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1730 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1731 buffer = kmalloc(buffer_size, GFP_KERNEL);
1733 memcpy(buffer, fw_p->data, fw_p->size);
1734 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1735 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1738 dbg("%s ENOMEM\n", __func__);
1741 release_firmware(fw_p);
1743 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1748 dbg("%s - download successful", __func__);