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_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
44 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
46 #define TI_FIRMWARE_BUF_SIZE 16284
48 #define TI_WRITE_BUF_SIZE 1024
50 #define TI_TRANSFER_TIMEOUT 2
52 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
54 /* supported setserial flags */
55 #define TI_SET_SERIAL_FLAGS 0
58 #define TI_READ_URB_RUNNING 0
59 #define TI_READ_URB_STOPPING 1
60 #define TI_READ_URB_STOPPED 2
62 #define TI_EXTRA_VID_PID_COUNT 5
72 __u8 tp_uart_mode; /* 232 or 485 modes */
73 unsigned int tp_uart_base_addr;
75 int tp_closing_wait;/* in .01 secs */
76 struct async_icount tp_icount;
77 wait_queue_head_t tp_msr_wait; /* wait for msr change */
78 wait_queue_head_t tp_write_wait;
79 struct ti_device *tp_tdev;
80 struct usb_serial_port *tp_port;
82 int tp_read_urb_state;
83 int tp_write_urb_in_use;
84 struct kfifo write_fifo;
88 struct mutex td_open_close_lock;
89 int td_open_port_count;
90 struct usb_serial *td_serial;
96 /* Function Declarations */
98 static int ti_startup(struct usb_serial *serial);
99 static void ti_release(struct usb_serial *serial);
100 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
101 static void ti_close(struct usb_serial_port *port);
102 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
103 const unsigned char *data, int count);
104 static int ti_write_room(struct tty_struct *tty);
105 static int ti_chars_in_buffer(struct tty_struct *tty);
106 static void ti_throttle(struct tty_struct *tty);
107 static void ti_unthrottle(struct tty_struct *tty);
108 static int ti_ioctl(struct tty_struct *tty,
109 unsigned int cmd, unsigned long arg);
110 static int ti_get_icount(struct tty_struct *tty,
111 struct serial_icounter_struct *icount);
112 static void ti_set_termios(struct tty_struct *tty,
113 struct usb_serial_port *port, struct ktermios *old_termios);
114 static int ti_tiocmget(struct tty_struct *tty);
115 static int ti_tiocmset(struct tty_struct *tty,
116 unsigned int set, unsigned int clear);
117 static void ti_break(struct tty_struct *tty, int break_state);
118 static void ti_interrupt_callback(struct urb *urb);
119 static void ti_bulk_in_callback(struct urb *urb);
120 static void ti_bulk_out_callback(struct urb *urb);
122 static void ti_recv(struct device *dev, struct tty_struct *tty,
123 unsigned char *data, int length);
124 static void ti_send(struct ti_port *tport);
125 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
126 static int ti_get_lsr(struct ti_port *tport);
127 static int ti_get_serial_info(struct ti_port *tport,
128 struct serial_struct __user *ret_arg);
129 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
130 struct serial_struct __user *new_arg);
131 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
133 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
135 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
136 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
138 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
139 __u16 moduleid, __u16 value, __u8 *data, int size);
140 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
141 __u16 moduleid, __u16 value, __u8 *data, int size);
143 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
144 unsigned long addr, __u8 mask, __u8 byte);
146 static int ti_download_firmware(struct ti_device *tdev);
151 /* 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[15+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) },
180 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
181 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
184 static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
185 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
186 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
187 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
188 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
191 static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] = {
192 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
193 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
194 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
195 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
196 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
197 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
198 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
200 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
201 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
202 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
203 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
205 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
206 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
207 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
208 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
209 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
210 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
214 static struct usb_serial_driver ti_1port_device = {
216 .owner = THIS_MODULE,
217 .name = "ti_usb_3410_5052_1",
219 .description = "TI USB 3410 1 port adapter",
220 .id_table = ti_id_table_3410,
222 .attach = ti_startup,
223 .release = ti_release,
227 .write_room = ti_write_room,
228 .chars_in_buffer = ti_chars_in_buffer,
229 .throttle = ti_throttle,
230 .unthrottle = ti_unthrottle,
232 .set_termios = ti_set_termios,
233 .tiocmget = ti_tiocmget,
234 .tiocmset = ti_tiocmset,
235 .get_icount = ti_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,
242 static struct usb_serial_driver ti_2port_device = {
244 .owner = THIS_MODULE,
245 .name = "ti_usb_3410_5052_2",
247 .description = "TI USB 5052 2 port adapter",
248 .id_table = ti_id_table_5052,
250 .attach = ti_startup,
251 .release = ti_release,
255 .write_room = ti_write_room,
256 .chars_in_buffer = ti_chars_in_buffer,
257 .throttle = ti_throttle,
258 .unthrottle = ti_unthrottle,
260 .set_termios = ti_set_termios,
261 .tiocmget = ti_tiocmget,
262 .tiocmset = ti_tiocmset,
263 .get_icount = ti_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,
270 static struct usb_serial_driver * const serial_drivers[] = {
271 &ti_1port_device, &ti_2port_device, NULL
276 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
277 MODULE_DESCRIPTION(TI_DRIVER_DESC);
278 MODULE_LICENSE("GPL");
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");
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");
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");
305 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
310 static int __init ti_init(void)
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;
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;
335 return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ti_id_table_combined);
338 static void __exit ti_exit(void)
340 usb_serial_deregister_drivers(serial_drivers);
343 module_init(ti_init);
344 module_exit(ti_exit);
347 static int ti_startup(struct usb_serial *serial)
349 struct ti_device *tdev;
350 struct ti_port *tport;
351 struct usb_device *dev = serial->dev;
357 "%s - product 0x%4X, num configurations %d, configuration value %d",
358 __func__, le16_to_cpu(dev->descriptor.idProduct),
359 dev->descriptor.bNumConfigurations,
360 dev->actconfig->desc.bConfigurationValue);
362 /* create device structure */
363 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
365 dev_err(&dev->dev, "%s - out of memory\n", __func__);
368 mutex_init(&tdev->td_open_close_lock);
369 tdev->td_serial = serial;
370 usb_set_serial_data(serial, tdev);
372 /* determine device type */
373 if (usb_match_id(serial->interface, ti_id_table_3410))
374 tdev->td_is_3410 = 1;
375 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
376 tdev->td_is_3410 ? "3410" : "5052");
378 /* if we have only 1 configuration, download firmware */
379 if (dev->descriptor.bNumConfigurations == 1) {
380 status = ti_download_firmware(tdev);
385 /* 3410 must be reset, 5052 resets itself */
386 if (tdev->td_is_3410) {
387 msleep_interruptible(100);
388 usb_reset_device(dev);
395 /* the second configuration must be set */
396 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
397 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
398 status = status ? status : -ENODEV;
402 /* set up port structures */
403 for (i = 0; i < serial->num_ports; ++i) {
404 tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL);
406 dev_err(&dev->dev, "%s - out of memory\n", __func__);
410 spin_lock_init(&tport->tp_lock);
411 tport->tp_uart_base_addr = (i == 0 ?
412 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
413 tport->tp_closing_wait = closing_wait;
414 init_waitqueue_head(&tport->tp_msr_wait);
415 init_waitqueue_head(&tport->tp_write_wait);
416 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE,
418 dev_err(&dev->dev, "%s - out of memory\n", __func__);
423 tport->tp_port = serial->port[i];
424 tport->tp_tdev = tdev;
425 usb_set_serial_port_data(serial->port[i], tport);
426 tport->tp_uart_mode = 0; /* default is RS232 */
432 for (--i; i >= 0; --i) {
433 tport = usb_get_serial_port_data(serial->port[i]);
434 kfifo_free(&tport->write_fifo);
436 usb_set_serial_port_data(serial->port[i], NULL);
440 usb_set_serial_data(serial, NULL);
445 static void ti_release(struct usb_serial *serial)
448 struct ti_device *tdev = usb_get_serial_data(serial);
449 struct ti_port *tport;
451 for (i = 0; i < serial->num_ports; ++i) {
452 tport = usb_get_serial_port_data(serial->port[i]);
454 kfifo_free(&tport->write_fifo);
463 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
465 struct ti_port *tport = usb_get_serial_port_data(port);
466 struct ti_device *tdev;
467 struct usb_device *dev;
471 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
472 TI_PIPE_TIMEOUT_ENABLE |
473 (TI_TRANSFER_TIMEOUT << 2));
478 dev = port->serial->dev;
479 tdev = tport->tp_tdev;
481 /* only one open on any port on a device at a time */
482 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
485 port_number = port->number - port->serial->minor;
487 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
490 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
492 /* start interrupt urb the first time a port is opened on this device */
493 if (tdev->td_open_port_count == 0) {
494 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
495 urb = tdev->td_serial->port[0]->interrupt_in_urb;
497 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
502 status = usb_submit_urb(urb, GFP_KERNEL);
504 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
510 ti_set_termios(tty, port, tty->termios);
512 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
513 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
514 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
516 dev_err(&port->dev, "%s - cannot send open command, %d\n",
521 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
522 status = ti_command_out_sync(tdev, TI_START_PORT,
523 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
525 dev_err(&port->dev, "%s - cannot send start command, %d\n",
530 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
531 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
532 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
534 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
538 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
539 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
541 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
546 /* reset the data toggle on the bulk endpoints to work around bug in
547 * host controllers where things get out of sync some times */
548 usb_clear_halt(dev, port->write_urb->pipe);
549 usb_clear_halt(dev, port->read_urb->pipe);
552 ti_set_termios(tty, port, tty->termios);
554 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
555 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
556 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
558 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
563 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
564 status = ti_command_out_sync(tdev, TI_START_PORT,
565 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
567 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
573 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
574 urb = port->read_urb;
576 dev_err(&port->dev, "%s - no read urb\n", __func__);
580 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
581 urb->context = tport;
582 status = usb_submit_urb(urb, GFP_KERNEL);
584 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
589 tport->tp_is_open = 1;
590 ++tdev->td_open_port_count;
595 if (tdev->td_open_port_count == 0)
596 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
598 mutex_unlock(&tdev->td_open_close_lock);
599 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
604 static void ti_close(struct usb_serial_port *port)
606 struct ti_device *tdev;
607 struct ti_port *tport;
612 tdev = usb_get_serial_data(port->serial);
613 tport = usb_get_serial_port_data(port);
614 if (tdev == NULL || tport == NULL)
617 tport->tp_is_open = 0;
619 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
621 usb_kill_urb(port->read_urb);
622 usb_kill_urb(port->write_urb);
623 tport->tp_write_urb_in_use = 0;
625 port_number = port->number - port->serial->minor;
627 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
628 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
629 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
632 "%s - cannot send close port command, %d\n"
635 /* if mutex_lock is interrupted, continue anyway */
636 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
637 --tport->tp_tdev->td_open_port_count;
638 if (tport->tp_tdev->td_open_port_count <= 0) {
639 /* last port is closed, shut down interrupt urb */
640 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
641 tport->tp_tdev->td_open_port_count = 0;
644 mutex_unlock(&tdev->td_open_close_lock);
648 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
649 const unsigned char *data, int count)
651 struct ti_port *tport = usb_get_serial_port_data(port);
654 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
658 if (tport == NULL || !tport->tp_is_open)
661 count = kfifo_in_locked(&tport->write_fifo, data, count,
669 static int ti_write_room(struct tty_struct *tty)
671 struct usb_serial_port *port = tty->driver_data;
672 struct ti_port *tport = usb_get_serial_port_data(port);
679 spin_lock_irqsave(&tport->tp_lock, flags);
680 room = kfifo_avail(&tport->write_fifo);
681 spin_unlock_irqrestore(&tport->tp_lock, flags);
683 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
688 static int ti_chars_in_buffer(struct tty_struct *tty)
690 struct usb_serial_port *port = tty->driver_data;
691 struct ti_port *tport = usb_get_serial_port_data(port);
698 spin_lock_irqsave(&tport->tp_lock, flags);
699 chars = kfifo_len(&tport->write_fifo);
700 spin_unlock_irqrestore(&tport->tp_lock, flags);
702 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
707 static void ti_throttle(struct tty_struct *tty)
709 struct usb_serial_port *port = tty->driver_data;
710 struct ti_port *tport = usb_get_serial_port_data(port);
715 if (I_IXOFF(tty) || C_CRTSCTS(tty))
716 ti_stop_read(tport, tty);
721 static void ti_unthrottle(struct tty_struct *tty)
723 struct usb_serial_port *port = tty->driver_data;
724 struct ti_port *tport = usb_get_serial_port_data(port);
730 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
731 status = ti_restart_read(tport, tty);
733 dev_err(&port->dev, "%s - cannot restart read, %d\n",
738 static int ti_get_icount(struct tty_struct *tty,
739 struct serial_icounter_struct *icount)
741 struct usb_serial_port *port = tty->driver_data;
742 struct ti_port *tport = usb_get_serial_port_data(port);
743 struct async_icount cnow = tport->tp_icount;
745 dev_dbg(&port->dev, "%s - TIOCGICOUNT RX=%d, TX=%d\n", __func__,
748 icount->cts = cnow.cts;
749 icount->dsr = cnow.dsr;
750 icount->rng = cnow.rng;
751 icount->dcd = cnow.dcd;
752 icount->rx = cnow.rx;
753 icount->tx = cnow.tx;
754 icount->frame = cnow.frame;
755 icount->overrun = cnow.overrun;
756 icount->parity = cnow.parity;
757 icount->brk = cnow.brk;
758 icount->buf_overrun = cnow.buf_overrun;
763 static int ti_ioctl(struct tty_struct *tty,
764 unsigned int cmd, unsigned long arg)
766 struct usb_serial_port *port = tty->driver_data;
767 struct ti_port *tport = usb_get_serial_port_data(port);
768 struct async_icount cnow;
769 struct async_icount cprev;
771 dev_dbg(&port->dev, "%s - cmd = 0x%04X\n", __func__, cmd);
778 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
779 return ti_get_serial_info(tport,
780 (struct serial_struct __user *)arg);
782 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
783 return ti_set_serial_info(tty, tport,
784 (struct serial_struct __user *)arg);
786 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
787 cprev = tport->tp_icount;
789 interruptible_sleep_on(&tport->tp_msr_wait);
790 if (signal_pending(current))
792 cnow = tport->tp_icount;
793 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
794 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
795 return -EIO; /* no change => error */
796 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
797 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
798 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
799 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
809 static void ti_set_termios(struct tty_struct *tty,
810 struct usb_serial_port *port, struct ktermios *old_termios)
812 struct ti_port *tport = usb_get_serial_port_data(port);
813 struct ti_uart_config *config;
814 tcflag_t cflag, iflag;
817 int port_number = port->number - port->serial->minor;
820 cflag = tty->termios->c_cflag;
821 iflag = tty->termios->c_iflag;
823 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
824 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
825 old_termios->c_cflag, old_termios->c_iflag);
830 config = kmalloc(sizeof(*config), GFP_KERNEL);
832 dev_err(&port->dev, "%s - out of memory\n", __func__);
838 /* these flags must be set */
839 config->wFlags |= TI_UART_ENABLE_MS_INTS;
840 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
841 config->bUartMode = (__u8)(tport->tp_uart_mode);
843 switch (cflag & CSIZE) {
845 config->bDataBits = TI_UART_5_DATA_BITS;
848 config->bDataBits = TI_UART_6_DATA_BITS;
851 config->bDataBits = TI_UART_7_DATA_BITS;
855 config->bDataBits = TI_UART_8_DATA_BITS;
859 /* CMSPAR isn't supported by this driver */
860 tty->termios->c_cflag &= ~CMSPAR;
862 if (cflag & PARENB) {
863 if (cflag & PARODD) {
864 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
865 config->bParity = TI_UART_ODD_PARITY;
867 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
868 config->bParity = TI_UART_EVEN_PARITY;
871 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
872 config->bParity = TI_UART_NO_PARITY;
876 config->bStopBits = TI_UART_2_STOP_BITS;
878 config->bStopBits = TI_UART_1_STOP_BITS;
880 if (cflag & CRTSCTS) {
881 /* RTS flow control must be off to drop RTS for baud rate B0 */
882 if ((cflag & CBAUD) != B0)
883 config->wFlags |= TI_UART_ENABLE_RTS_IN;
884 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
887 ti_restart_read(tport, tty);
890 if (I_IXOFF(tty) || I_IXON(tty)) {
891 config->cXon = START_CHAR(tty);
892 config->cXoff = STOP_CHAR(tty);
895 config->wFlags |= TI_UART_ENABLE_X_IN;
897 ti_restart_read(tport, tty);
900 config->wFlags |= TI_UART_ENABLE_X_OUT;
903 baud = tty_get_baud_rate(tty);
906 if (tport->tp_tdev->td_is_3410)
907 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
909 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
911 /* FIXME: Should calculate resulting baud here and report it back */
912 if ((cflag & CBAUD) != B0)
913 tty_encode_baud_rate(tty, baud, baud);
916 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
917 __func__, baud, config->wBaudRate, config->wFlags,
918 config->bDataBits, config->bParity, config->bStopBits,
919 config->cXon, config->cXoff, config->bUartMode);
921 cpu_to_be16s(&config->wBaudRate);
922 cpu_to_be16s(&config->wFlags);
924 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
925 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
928 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
929 __func__, port_number, status);
931 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
932 mcr = tport->tp_shadow_mcr;
933 /* if baud rate is B0, clear RTS and DTR */
934 if ((cflag & CBAUD) == B0)
935 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
936 status = ti_set_mcr(tport, mcr);
939 "%s - cannot set modem control on port %d, %d\n",
940 __func__, port_number, status);
946 static int ti_tiocmget(struct tty_struct *tty)
948 struct usb_serial_port *port = tty->driver_data;
949 struct ti_port *tport = usb_get_serial_port_data(port);
958 spin_lock_irqsave(&tport->tp_lock, flags);
960 mcr = tport->tp_shadow_mcr;
961 spin_unlock_irqrestore(&tport->tp_lock, flags);
963 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
964 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
965 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
966 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
967 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
968 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
969 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
971 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
977 static int ti_tiocmset(struct tty_struct *tty,
978 unsigned int set, unsigned int clear)
980 struct usb_serial_port *port = tty->driver_data;
981 struct ti_port *tport = usb_get_serial_port_data(port);
988 spin_lock_irqsave(&tport->tp_lock, flags);
989 mcr = tport->tp_shadow_mcr;
995 if (set & TIOCM_LOOP)
998 if (clear & TIOCM_RTS)
1000 if (clear & TIOCM_DTR)
1002 if (clear & TIOCM_LOOP)
1003 mcr &= ~TI_MCR_LOOP;
1004 spin_unlock_irqrestore(&tport->tp_lock, flags);
1006 return ti_set_mcr(tport, mcr);
1010 static void ti_break(struct tty_struct *tty, int break_state)
1012 struct usb_serial_port *port = tty->driver_data;
1013 struct ti_port *tport = usb_get_serial_port_data(port);
1016 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1021 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1023 status = ti_write_byte(port, tport->tp_tdev,
1024 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1025 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1028 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1032 static void ti_interrupt_callback(struct urb *urb)
1034 struct ti_device *tdev = urb->context;
1035 struct usb_serial_port *port;
1036 struct usb_serial *serial = tdev->td_serial;
1037 struct ti_port *tport;
1038 struct device *dev = &urb->dev->dev;
1039 unsigned char *data = urb->transfer_buffer;
1040 int length = urb->actual_length;
1043 int status = urb->status;
1053 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1054 tdev->td_urb_error = 1;
1057 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1058 tdev->td_urb_error = 1;
1063 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1067 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1068 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1072 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1073 function = TI_GET_FUNC_FROM_CODE(data[0]);
1075 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1076 __func__, port_number, function, data[1]);
1078 if (port_number >= serial->num_ports) {
1079 dev_err(dev, "%s - bad port number, %d\n",
1080 __func__, port_number);
1084 port = serial->port[port_number];
1086 tport = usb_get_serial_port_data(port);
1091 case TI_CODE_DATA_ERROR:
1092 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1093 __func__, port_number, data[1]);
1096 case TI_CODE_MODEM_STATUS:
1098 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1099 ti_handle_new_msr(tport, msr);
1103 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1109 retval = usb_submit_urb(urb, GFP_ATOMIC);
1111 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1116 static void ti_bulk_in_callback(struct urb *urb)
1118 struct ti_port *tport = urb->context;
1119 struct usb_serial_port *port = tport->tp_port;
1120 struct device *dev = &urb->dev->dev;
1121 int status = urb->status;
1123 struct tty_struct *tty;
1131 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1132 tport->tp_tdev->td_urb_error = 1;
1133 wake_up_interruptible(&tport->tp_write_wait);
1136 dev_err(dev, "%s - nonzero urb status, %d\n",
1138 tport->tp_tdev->td_urb_error = 1;
1139 wake_up_interruptible(&tport->tp_write_wait);
1142 if (status == -EPIPE)
1146 dev_err(dev, "%s - stopping read!\n", __func__);
1150 tty = tty_port_tty_get(&port->port);
1152 if (urb->actual_length) {
1153 usb_serial_debug_data(dev, __func__, urb->actual_length,
1154 urb->transfer_buffer);
1156 if (!tport->tp_is_open)
1157 dev_dbg(dev, "%s - port closed, dropping data\n",
1160 ti_recv(&urb->dev->dev, tty,
1161 urb->transfer_buffer,
1162 urb->actual_length);
1163 spin_lock(&tport->tp_lock);
1164 tport->tp_icount.rx += urb->actual_length;
1165 spin_unlock(&tport->tp_lock);
1171 /* continue to read unless stopping */
1172 spin_lock(&tport->tp_lock);
1173 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1174 retval = usb_submit_urb(urb, GFP_ATOMIC);
1175 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1176 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1178 spin_unlock(&tport->tp_lock);
1180 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1185 static void ti_bulk_out_callback(struct urb *urb)
1187 struct ti_port *tport = urb->context;
1188 struct usb_serial_port *port = tport->tp_port;
1189 int status = urb->status;
1191 tport->tp_write_urb_in_use = 0;
1199 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1200 tport->tp_tdev->td_urb_error = 1;
1201 wake_up_interruptible(&tport->tp_write_wait);
1204 dev_err_console(port, "%s - nonzero urb status, %d\n",
1206 tport->tp_tdev->td_urb_error = 1;
1207 wake_up_interruptible(&tport->tp_write_wait);
1210 /* send any buffered data */
1215 static void ti_recv(struct device *dev, struct tty_struct *tty,
1216 unsigned char *data, int length)
1221 cnt = tty_insert_flip_string(tty, data, length);
1223 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1224 __func__, length - cnt);
1228 tty_flip_buffer_push(tty);
1231 } while (length > 0);
1236 static void ti_send(struct ti_port *tport)
1239 struct usb_serial_port *port = tport->tp_port;
1240 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1241 unsigned long flags;
1243 spin_lock_irqsave(&tport->tp_lock, flags);
1245 if (tport->tp_write_urb_in_use)
1248 count = kfifo_out(&tport->write_fifo,
1249 port->write_urb->transfer_buffer,
1250 port->bulk_out_size);
1255 tport->tp_write_urb_in_use = 1;
1257 spin_unlock_irqrestore(&tport->tp_lock, flags);
1259 usb_serial_debug_data(&port->dev, __func__, count,
1260 port->write_urb->transfer_buffer);
1262 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1263 usb_sndbulkpipe(port->serial->dev,
1264 port->bulk_out_endpointAddress),
1265 port->write_urb->transfer_buffer, count,
1266 ti_bulk_out_callback, tport);
1268 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1270 dev_err_console(port, "%s - submit write urb failed, %d\n",
1272 tport->tp_write_urb_in_use = 0;
1273 /* TODO: reschedule ti_send */
1275 spin_lock_irqsave(&tport->tp_lock, flags);
1276 tport->tp_icount.tx += count;
1277 spin_unlock_irqrestore(&tport->tp_lock, flags);
1280 /* more room in the buffer for new writes, wakeup */
1284 wake_up_interruptible(&tport->tp_write_wait);
1287 spin_unlock_irqrestore(&tport->tp_lock, flags);
1293 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1295 unsigned long flags;
1298 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1299 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1300 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1302 spin_lock_irqsave(&tport->tp_lock, flags);
1304 tport->tp_shadow_mcr = mcr;
1305 spin_unlock_irqrestore(&tport->tp_lock, flags);
1311 static int ti_get_lsr(struct ti_port *tport)
1314 struct ti_device *tdev = tport->tp_tdev;
1315 struct usb_serial_port *port = tport->tp_port;
1316 int port_number = port->number - port->serial->minor;
1317 struct ti_port_status *data;
1319 size = sizeof(struct ti_port_status);
1320 data = kmalloc(size, GFP_KERNEL);
1322 dev_err(&port->dev, "%s - out of memory\n", __func__);
1326 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1327 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1330 "%s - get port status command failed, %d\n",
1335 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1337 tport->tp_lsr = data->bLSR;
1345 static int ti_get_serial_info(struct ti_port *tport,
1346 struct serial_struct __user *ret_arg)
1348 struct usb_serial_port *port = tport->tp_port;
1349 struct serial_struct ret_serial;
1354 memset(&ret_serial, 0, sizeof(ret_serial));
1356 ret_serial.type = PORT_16550A;
1357 ret_serial.line = port->serial->minor;
1358 ret_serial.port = port->number - port->serial->minor;
1359 ret_serial.flags = tport->tp_flags;
1360 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1361 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1362 ret_serial.closing_wait = tport->tp_closing_wait;
1364 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1371 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1372 struct serial_struct __user *new_arg)
1374 struct serial_struct new_serial;
1376 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1379 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1380 tport->tp_closing_wait = new_serial.closing_wait;
1386 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1388 struct async_icount *icount;
1389 struct tty_struct *tty;
1390 unsigned long flags;
1392 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1394 if (msr & TI_MSR_DELTA_MASK) {
1395 spin_lock_irqsave(&tport->tp_lock, flags);
1396 icount = &tport->tp_icount;
1397 if (msr & TI_MSR_DELTA_CTS)
1399 if (msr & TI_MSR_DELTA_DSR)
1401 if (msr & TI_MSR_DELTA_CD)
1403 if (msr & TI_MSR_DELTA_RI)
1405 wake_up_interruptible(&tport->tp_msr_wait);
1406 spin_unlock_irqrestore(&tport->tp_lock, flags);
1409 tport->tp_msr = msr & TI_MSR_MASK;
1411 /* handle CTS flow control */
1412 tty = tty_port_tty_get(&tport->tp_port->port);
1413 if (tty && C_CRTSCTS(tty)) {
1414 if (msr & TI_MSR_CTS) {
1415 tty->hw_stopped = 0;
1418 tty->hw_stopped = 1;
1425 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1427 struct ti_device *tdev = tport->tp_tdev;
1428 struct usb_serial_port *port = tport->tp_port;
1431 spin_lock_irq(&tport->tp_lock);
1433 /* wait for data to drain from the buffer */
1434 tdev->td_urb_error = 0;
1435 init_waitqueue_entry(&wait, current);
1436 add_wait_queue(&tport->tp_write_wait, &wait);
1438 set_current_state(TASK_INTERRUPTIBLE);
1439 if (kfifo_len(&tport->write_fifo) == 0
1440 || timeout == 0 || signal_pending(current)
1441 || tdev->td_urb_error
1442 || port->serial->disconnected) /* disconnect */
1444 spin_unlock_irq(&tport->tp_lock);
1445 timeout = schedule_timeout(timeout);
1446 spin_lock_irq(&tport->tp_lock);
1448 set_current_state(TASK_RUNNING);
1449 remove_wait_queue(&tport->tp_write_wait, &wait);
1451 /* flush any remaining data in the buffer */
1453 kfifo_reset_out(&tport->write_fifo);
1455 spin_unlock_irq(&tport->tp_lock);
1457 mutex_lock(&port->serial->disc_mutex);
1458 /* wait for data to drain from the device */
1459 /* wait for empty tx register, plus 20 ms */
1461 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1462 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1463 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1464 && !port->serial->disconnected) {
1465 if (ti_get_lsr(tport))
1467 mutex_unlock(&port->serial->disc_mutex);
1468 msleep_interruptible(20);
1469 mutex_lock(&port->serial->disc_mutex);
1471 mutex_unlock(&port->serial->disc_mutex);
1475 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1477 unsigned long flags;
1479 spin_lock_irqsave(&tport->tp_lock, flags);
1481 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1482 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1484 spin_unlock_irqrestore(&tport->tp_lock, flags);
1488 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1492 unsigned long flags;
1494 spin_lock_irqsave(&tport->tp_lock, flags);
1496 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1497 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1498 urb = tport->tp_port->read_urb;
1499 spin_unlock_irqrestore(&tport->tp_lock, flags);
1500 urb->context = tport;
1501 status = usb_submit_urb(urb, GFP_KERNEL);
1503 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1504 spin_unlock_irqrestore(&tport->tp_lock, flags);
1511 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1512 __u16 moduleid, __u16 value, __u8 *data, int size)
1516 status = usb_control_msg(tdev->td_serial->dev,
1517 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1518 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1519 value, moduleid, data, size, 1000);
1531 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1532 __u16 moduleid, __u16 value, __u8 *data, int size)
1536 status = usb_control_msg(tdev->td_serial->dev,
1537 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1538 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1539 value, moduleid, data, size, 1000);
1551 static int ti_write_byte(struct usb_serial_port *port,
1552 struct ti_device *tdev, unsigned long addr,
1553 __u8 mask, __u8 byte)
1557 struct ti_write_data_bytes *data;
1559 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1562 size = sizeof(struct ti_write_data_bytes) + 2;
1563 data = kmalloc(size, GFP_KERNEL);
1565 dev_err(&port->dev, "%s - out of memory\n", __func__);
1569 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1570 data->bDataType = TI_RW_DATA_BYTE;
1571 data->bDataCounter = 1;
1572 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1573 data->wBaseAddrLo = cpu_to_be16(addr);
1574 data->bData[0] = mask;
1575 data->bData[1] = byte;
1577 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1578 (__u8 *)data, size);
1581 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1588 static int ti_do_download(struct usb_device *dev, int pipe,
1589 u8 *buffer, int size)
1594 struct ti_firmware_header *header;
1598 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1599 cs = (__u8)(cs + buffer[pos]);
1601 header = (struct ti_firmware_header *)buffer;
1602 header->wLength = cpu_to_le16((__u16)(size
1603 - sizeof(struct ti_firmware_header)));
1604 header->bCheckSum = cs;
1606 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1607 for (pos = 0; pos < size; pos += done) {
1608 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1609 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1617 static int ti_download_firmware(struct ti_device *tdev)
1622 struct usb_device *dev = tdev->td_serial->dev;
1623 unsigned int pipe = usb_sndbulkpipe(dev,
1624 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1625 const struct firmware *fw_p;
1628 /* try ID specific firmware first, then try generic firmware */
1629 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1630 dev->descriptor.idProduct);
1631 status = request_firmware(&fw_p, buf, &dev->dev);
1635 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1636 switch (dev->descriptor.idProduct) {
1637 case MTS_CDMA_PRODUCT_ID:
1638 strcpy(buf, "mts_cdma.fw");
1640 case MTS_GSM_PRODUCT_ID:
1641 strcpy(buf, "mts_gsm.fw");
1643 case MTS_EDGE_PRODUCT_ID:
1644 strcpy(buf, "mts_edge.fw");
1646 case MTS_MT9234MU_PRODUCT_ID:
1647 strcpy(buf, "mts_mt9234mu.fw");
1649 case MTS_MT9234ZBA_PRODUCT_ID:
1650 strcpy(buf, "mts_mt9234zba.fw");
1652 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1653 strcpy(buf, "mts_mt9234zba.fw");
1656 if (buf[0] == '\0') {
1657 if (tdev->td_is_3410)
1658 strcpy(buf, "ti_3410.fw");
1660 strcpy(buf, "ti_5052.fw");
1662 status = request_firmware(&fw_p, buf, &dev->dev);
1665 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1668 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1669 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1670 release_firmware(fw_p);
1674 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1675 buffer = kmalloc(buffer_size, GFP_KERNEL);
1677 memcpy(buffer, fw_p->data, fw_p->size);
1678 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1679 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1682 dev_dbg(&dev->dev, "%s ENOMEM\n", __func__);
1685 release_firmware(fw_p);
1687 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1692 dev_dbg(&dev->dev, "%s - download successful\n", __func__);