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/circ_buf.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 "v0.9"
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 circ_buf *tp_write_buf;
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);
147 /* circular buffer */
148 static struct circ_buf *ti_buf_alloc(void);
149 static void ti_buf_free(struct circ_buf *cb);
150 static void ti_buf_clear(struct circ_buf *cb);
151 static int ti_buf_data_avail(struct circ_buf *cb);
152 static int ti_buf_space_avail(struct circ_buf *cb);
153 static int ti_buf_put(struct circ_buf *cb, const char *buf, int count);
154 static int ti_buf_get(struct circ_buf *cb, char *buf, int count);
159 /* module parameters */
161 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
162 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
163 static unsigned int vendor_3410_count;
164 static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
165 static unsigned int product_3410_count;
166 static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
167 static unsigned int vendor_5052_count;
168 static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
169 static unsigned int product_5052_count;
171 /* supported devices */
172 /* the array dimension is the number of default entries plus */
173 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
175 static struct usb_device_id ti_id_table_3410[10+TI_EXTRA_VID_PID_COUNT+1] = {
176 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
177 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
178 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
179 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
180 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
181 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
182 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
183 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
184 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
185 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
188 static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
189 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
190 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
191 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
192 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
195 static struct usb_device_id ti_id_table_combined[14+2*TI_EXTRA_VID_PID_COUNT+1] = {
196 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
197 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
198 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
200 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
201 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
202 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
203 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
205 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
206 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
207 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
208 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
209 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
213 static struct usb_driver ti_usb_driver = {
214 .name = "ti_usb_3410_5052",
215 .probe = usb_serial_probe,
216 .disconnect = usb_serial_disconnect,
217 .id_table = ti_id_table_combined,
221 static struct usb_serial_driver ti_1port_device = {
223 .owner = THIS_MODULE,
224 .name = "ti_usb_3410_5052_1",
226 .description = "TI USB 3410 1 port adapter",
227 .usb_driver = &ti_usb_driver,
228 .id_table = ti_id_table_3410,
230 .attach = ti_startup,
231 .release = ti_release,
235 .write_room = ti_write_room,
236 .chars_in_buffer = ti_chars_in_buffer,
237 .throttle = ti_throttle,
238 .unthrottle = ti_unthrottle,
240 .set_termios = ti_set_termios,
241 .tiocmget = ti_tiocmget,
242 .tiocmset = ti_tiocmset,
243 .break_ctl = ti_break,
244 .read_int_callback = ti_interrupt_callback,
245 .read_bulk_callback = ti_bulk_in_callback,
246 .write_bulk_callback = ti_bulk_out_callback,
249 static struct usb_serial_driver ti_2port_device = {
251 .owner = THIS_MODULE,
252 .name = "ti_usb_3410_5052_2",
254 .description = "TI USB 5052 2 port adapter",
255 .usb_driver = &ti_usb_driver,
256 .id_table = ti_id_table_5052,
258 .attach = ti_startup,
259 .release = ti_release,
263 .write_room = ti_write_room,
264 .chars_in_buffer = ti_chars_in_buffer,
265 .throttle = ti_throttle,
266 .unthrottle = ti_unthrottle,
268 .set_termios = ti_set_termios,
269 .tiocmget = ti_tiocmget,
270 .tiocmset = ti_tiocmset,
271 .break_ctl = ti_break,
272 .read_int_callback = ti_interrupt_callback,
273 .read_bulk_callback = ti_bulk_in_callback,
274 .write_bulk_callback = ti_bulk_out_callback,
280 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
281 MODULE_DESCRIPTION(TI_DRIVER_DESC);
282 MODULE_VERSION(TI_DRIVER_VERSION);
283 MODULE_LICENSE("GPL");
285 MODULE_FIRMWARE("ti_3410.fw");
286 MODULE_FIRMWARE("ti_5052.fw");
287 MODULE_FIRMWARE("mts_cdma.fw");
288 MODULE_FIRMWARE("mts_gsm.fw");
289 MODULE_FIRMWARE("mts_edge.fw");
291 module_param(debug, bool, S_IRUGO | S_IWUSR);
292 MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
294 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
295 MODULE_PARM_DESC(closing_wait,
296 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
298 module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
299 MODULE_PARM_DESC(vendor_3410,
300 "Vendor ids for 3410 based devices, 1-5 short integers");
301 module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
302 MODULE_PARM_DESC(product_3410,
303 "Product ids for 3410 based devices, 1-5 short integers");
304 module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
305 MODULE_PARM_DESC(vendor_5052,
306 "Vendor ids for 5052 based devices, 1-5 short integers");
307 module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
308 MODULE_PARM_DESC(product_5052,
309 "Product ids for 5052 based devices, 1-5 short integers");
311 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
316 static int __init ti_init(void)
321 /* insert extra vendor and product ids */
322 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
323 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
324 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
325 ti_id_table_3410[j].idVendor = vendor_3410[i];
326 ti_id_table_3410[j].idProduct = product_3410[i];
327 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
328 ti_id_table_combined[c].idVendor = vendor_3410[i];
329 ti_id_table_combined[c].idProduct = product_3410[i];
330 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
332 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
333 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
334 ti_id_table_5052[j].idVendor = vendor_5052[i];
335 ti_id_table_5052[j].idProduct = product_5052[i];
336 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
337 ti_id_table_combined[c].idVendor = vendor_5052[i];
338 ti_id_table_combined[c].idProduct = product_5052[i];
339 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
342 ret = usb_serial_register(&ti_1port_device);
345 ret = usb_serial_register(&ti_2port_device);
349 ret = usb_register(&ti_usb_driver);
353 printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":"
354 TI_DRIVER_DESC "\n");
359 usb_serial_deregister(&ti_2port_device);
361 usb_serial_deregister(&ti_1port_device);
367 static void __exit ti_exit(void)
369 usb_serial_deregister(&ti_1port_device);
370 usb_serial_deregister(&ti_2port_device);
371 usb_deregister(&ti_usb_driver);
375 module_init(ti_init);
376 module_exit(ti_exit);
379 static int ti_startup(struct usb_serial *serial)
381 struct ti_device *tdev;
382 struct ti_port *tport;
383 struct usb_device *dev = serial->dev;
388 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
389 __func__, le16_to_cpu(dev->descriptor.idProduct),
390 dev->descriptor.bNumConfigurations,
391 dev->actconfig->desc.bConfigurationValue);
393 /* create device structure */
394 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
396 dev_err(&dev->dev, "%s - out of memory\n", __func__);
399 mutex_init(&tdev->td_open_close_lock);
400 tdev->td_serial = serial;
401 usb_set_serial_data(serial, tdev);
403 /* determine device type */
404 if (usb_match_id(serial->interface, ti_id_table_3410))
405 tdev->td_is_3410 = 1;
406 dbg("%s - device type is %s", __func__,
407 tdev->td_is_3410 ? "3410" : "5052");
409 /* if we have only 1 configuration, download firmware */
410 if (dev->descriptor.bNumConfigurations == 1) {
411 if ((status = ti_download_firmware(tdev)) != 0)
414 /* 3410 must be reset, 5052 resets itself */
415 if (tdev->td_is_3410) {
416 msleep_interruptible(100);
417 usb_reset_device(dev);
424 /* the second configuration must be set */
425 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
426 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
427 status = status ? status : -ENODEV;
431 /* set up port structures */
432 for (i = 0; i < serial->num_ports; ++i) {
433 tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL);
435 dev_err(&dev->dev, "%s - out of memory\n", __func__);
439 spin_lock_init(&tport->tp_lock);
440 tport->tp_uart_base_addr = (i == 0 ?
441 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
442 tport->tp_closing_wait = closing_wait;
443 init_waitqueue_head(&tport->tp_msr_wait);
444 init_waitqueue_head(&tport->tp_write_wait);
445 tport->tp_write_buf = ti_buf_alloc();
446 if (tport->tp_write_buf == NULL) {
447 dev_err(&dev->dev, "%s - out of memory\n", __func__);
452 tport->tp_port = serial->port[i];
453 tport->tp_tdev = tdev;
454 usb_set_serial_port_data(serial->port[i], tport);
455 tport->tp_uart_mode = 0; /* default is RS232 */
461 for (--i; i >= 0; --i) {
462 tport = usb_get_serial_port_data(serial->port[i]);
463 ti_buf_free(tport->tp_write_buf);
465 usb_set_serial_port_data(serial->port[i], NULL);
469 usb_set_serial_data(serial, NULL);
474 static void ti_release(struct usb_serial *serial)
477 struct ti_device *tdev = usb_get_serial_data(serial);
478 struct ti_port *tport;
482 for (i = 0; i < serial->num_ports; ++i) {
483 tport = usb_get_serial_port_data(serial->port[i]);
485 ti_buf_free(tport->tp_write_buf);
494 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
496 struct ti_port *tport = usb_get_serial_port_data(port);
497 struct ti_device *tdev;
498 struct usb_device *dev;
502 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
503 TI_PIPE_TIMEOUT_ENABLE |
504 (TI_TRANSFER_TIMEOUT << 2));
506 dbg("%s - port %d", __func__, port->number);
511 dev = port->serial->dev;
512 tdev = tport->tp_tdev;
514 /* only one open on any port on a device at a time */
515 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
518 port_number = port->number - port->serial->minor;
520 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
523 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
525 /* start interrupt urb the first time a port is opened on this device */
526 if (tdev->td_open_port_count == 0) {
527 dbg("%s - start interrupt in urb", __func__);
528 urb = tdev->td_serial->port[0]->interrupt_in_urb;
530 dev_err(&port->dev, "%s - no interrupt urb\n",
535 urb->complete = ti_interrupt_callback;
538 status = usb_submit_urb(urb, GFP_KERNEL);
541 "%s - submit interrupt urb failed, %d\n",
548 ti_set_termios(tty, port, tty->termios);
550 dbg("%s - sending TI_OPEN_PORT", __func__);
551 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
552 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
554 dev_err(&port->dev, "%s - cannot send open command, %d\n",
559 dbg("%s - sending TI_START_PORT", __func__);
560 status = ti_command_out_sync(tdev, TI_START_PORT,
561 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
563 dev_err(&port->dev, "%s - cannot send start command, %d\n",
568 dbg("%s - sending TI_PURGE_PORT", __func__);
569 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
570 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
572 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
576 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
577 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
579 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
584 /* reset the data toggle on the bulk endpoints to work around bug in
585 * host controllers where things get out of sync some times */
586 usb_clear_halt(dev, port->write_urb->pipe);
587 usb_clear_halt(dev, port->read_urb->pipe);
590 ti_set_termios(tty, port, tty->termios);
592 dbg("%s - sending TI_OPEN_PORT (2)", __func__);
593 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
594 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
596 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
601 dbg("%s - sending TI_START_PORT (2)", __func__);
602 status = ti_command_out_sync(tdev, TI_START_PORT,
603 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
605 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
611 dbg("%s - start read urb", __func__);
612 urb = port->read_urb;
614 dev_err(&port->dev, "%s - no read urb\n", __func__);
618 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
619 urb->complete = ti_bulk_in_callback;
620 urb->context = tport;
622 status = usb_submit_urb(urb, GFP_KERNEL);
624 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
629 tport->tp_is_open = 1;
630 ++tdev->td_open_port_count;
635 if (tdev->td_open_port_count == 0)
636 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
638 mutex_unlock(&tdev->td_open_close_lock);
639 dbg("%s - exit %d", __func__, status);
644 static void ti_close(struct usb_serial_port *port)
646 struct ti_device *tdev;
647 struct ti_port *tport;
652 dbg("%s - port %d", __func__, port->number);
654 tdev = usb_get_serial_data(port->serial);
655 tport = usb_get_serial_port_data(port);
656 if (tdev == NULL || tport == NULL)
659 tport->tp_is_open = 0;
661 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
663 usb_kill_urb(port->read_urb);
664 usb_kill_urb(port->write_urb);
665 tport->tp_write_urb_in_use = 0;
667 port_number = port->number - port->serial->minor;
669 dbg("%s - sending TI_CLOSE_PORT", __func__);
670 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
671 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
674 "%s - cannot send close port command, %d\n"
677 /* if mutex_lock is interrupted, continue anyway */
678 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
679 --tport->tp_tdev->td_open_port_count;
680 if (tport->tp_tdev->td_open_port_count <= 0) {
681 /* last port is closed, shut down interrupt urb */
682 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
683 tport->tp_tdev->td_open_port_count = 0;
686 mutex_unlock(&tdev->td_open_close_lock);
688 dbg("%s - exit", __func__);
692 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
693 const unsigned char *data, int count)
695 struct ti_port *tport = usb_get_serial_port_data(port);
698 dbg("%s - port %d", __func__, port->number);
701 dbg("%s - write request of 0 bytes", __func__);
705 if (tport == NULL || !tport->tp_is_open)
708 spin_lock_irqsave(&tport->tp_lock, flags);
709 count = ti_buf_put(tport->tp_write_buf, data, count);
710 spin_unlock_irqrestore(&tport->tp_lock, flags);
718 static int ti_write_room(struct tty_struct *tty)
720 struct usb_serial_port *port = tty->driver_data;
721 struct ti_port *tport = usb_get_serial_port_data(port);
725 dbg("%s - port %d", __func__, port->number);
730 spin_lock_irqsave(&tport->tp_lock, flags);
731 room = ti_buf_space_avail(tport->tp_write_buf);
732 spin_unlock_irqrestore(&tport->tp_lock, flags);
734 dbg("%s - returns %d", __func__, room);
739 static int ti_chars_in_buffer(struct tty_struct *tty)
741 struct usb_serial_port *port = tty->driver_data;
742 struct ti_port *tport = usb_get_serial_port_data(port);
746 dbg("%s - port %d", __func__, port->number);
751 spin_lock_irqsave(&tport->tp_lock, flags);
752 chars = ti_buf_data_avail(tport->tp_write_buf);
753 spin_unlock_irqrestore(&tport->tp_lock, flags);
755 dbg("%s - returns %d", __func__, chars);
760 static void ti_throttle(struct tty_struct *tty)
762 struct usb_serial_port *port = tty->driver_data;
763 struct ti_port *tport = usb_get_serial_port_data(port);
765 dbg("%s - port %d", __func__, port->number);
770 if (I_IXOFF(tty) || C_CRTSCTS(tty))
771 ti_stop_read(tport, tty);
776 static void ti_unthrottle(struct tty_struct *tty)
778 struct usb_serial_port *port = tty->driver_data;
779 struct ti_port *tport = usb_get_serial_port_data(port);
782 dbg("%s - port %d", __func__, port->number);
787 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
788 status = ti_restart_read(tport, tty);
790 dev_err(&port->dev, "%s - cannot restart read, %d\n",
796 static int ti_ioctl(struct tty_struct *tty, struct file *file,
797 unsigned int cmd, unsigned long arg)
799 struct usb_serial_port *port = tty->driver_data;
800 struct ti_port *tport = usb_get_serial_port_data(port);
801 struct async_icount cnow;
802 struct async_icount cprev;
804 dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
811 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
812 return ti_get_serial_info(tport,
813 (struct serial_struct __user *)arg);
815 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
816 return ti_set_serial_info(tty, tport,
817 (struct serial_struct __user *)arg);
819 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
820 cprev = tport->tp_icount;
822 interruptible_sleep_on(&tport->tp_msr_wait);
823 if (signal_pending(current))
825 cnow = tport->tp_icount;
826 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
827 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
828 return -EIO; /* no change => error */
829 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
830 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
831 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
832 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
838 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
839 __func__, port->number,
840 tport->tp_icount.rx, tport->tp_icount.tx);
841 if (copy_to_user((void __user *)arg, &tport->tp_icount,
842 sizeof(tport->tp_icount)))
850 static void ti_set_termios(struct tty_struct *tty,
851 struct usb_serial_port *port, struct ktermios *old_termios)
853 struct ti_port *tport = usb_get_serial_port_data(port);
854 struct ti_uart_config *config;
855 tcflag_t cflag, iflag;
858 int port_number = port->number - port->serial->minor;
861 dbg("%s - port %d", __func__, port->number);
863 cflag = tty->termios->c_cflag;
864 iflag = tty->termios->c_iflag;
866 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
867 dbg("%s - old clfag %08x, old iflag %08x", __func__,
868 old_termios->c_cflag, old_termios->c_iflag);
873 config = kmalloc(sizeof(*config), GFP_KERNEL);
875 dev_err(&port->dev, "%s - out of memory\n", __func__);
881 /* these flags must be set */
882 config->wFlags |= TI_UART_ENABLE_MS_INTS;
883 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
884 config->bUartMode = (__u8)(tport->tp_uart_mode);
886 switch (cflag & CSIZE) {
888 config->bDataBits = TI_UART_5_DATA_BITS;
891 config->bDataBits = TI_UART_6_DATA_BITS;
894 config->bDataBits = TI_UART_7_DATA_BITS;
898 config->bDataBits = TI_UART_8_DATA_BITS;
902 /* CMSPAR isn't supported by this driver */
903 tty->termios->c_cflag &= ~CMSPAR;
905 if (cflag & PARENB) {
906 if (cflag & PARODD) {
907 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
908 config->bParity = TI_UART_ODD_PARITY;
910 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
911 config->bParity = TI_UART_EVEN_PARITY;
914 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
915 config->bParity = TI_UART_NO_PARITY;
919 config->bStopBits = TI_UART_2_STOP_BITS;
921 config->bStopBits = TI_UART_1_STOP_BITS;
923 if (cflag & CRTSCTS) {
924 /* RTS flow control must be off to drop RTS for baud rate B0 */
925 if ((cflag & CBAUD) != B0)
926 config->wFlags |= TI_UART_ENABLE_RTS_IN;
927 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
930 ti_restart_read(tport, tty);
933 if (I_IXOFF(tty) || I_IXON(tty)) {
934 config->cXon = START_CHAR(tty);
935 config->cXoff = STOP_CHAR(tty);
938 config->wFlags |= TI_UART_ENABLE_X_IN;
940 ti_restart_read(tport, tty);
943 config->wFlags |= TI_UART_ENABLE_X_OUT;
946 baud = tty_get_baud_rate(tty);
949 if (tport->tp_tdev->td_is_3410)
950 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
952 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
954 /* FIXME: Should calculate resulting baud here and report it back */
955 if ((cflag & CBAUD) != B0)
956 tty_encode_baud_rate(tty, baud, baud);
958 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
959 __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
961 cpu_to_be16s(&config->wBaudRate);
962 cpu_to_be16s(&config->wFlags);
964 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
965 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
968 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
969 __func__, port_number, status);
971 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
972 mcr = tport->tp_shadow_mcr;
973 /* if baud rate is B0, clear RTS and DTR */
974 if ((cflag & CBAUD) == B0)
975 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
976 status = ti_set_mcr(tport, mcr);
979 "%s - cannot set modem control on port %d, %d\n",
980 __func__, port_number, status);
986 static int ti_tiocmget(struct tty_struct *tty, struct file *file)
988 struct usb_serial_port *port = tty->driver_data;
989 struct ti_port *tport = usb_get_serial_port_data(port);
995 dbg("%s - port %d", __func__, port->number);
1000 spin_lock_irqsave(&tport->tp_lock, flags);
1001 msr = tport->tp_msr;
1002 mcr = tport->tp_shadow_mcr;
1003 spin_unlock_irqrestore(&tport->tp_lock, flags);
1005 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1006 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1007 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1008 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1009 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1010 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1011 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1013 dbg("%s - 0x%04X", __func__, result);
1019 static int ti_tiocmset(struct tty_struct *tty, struct file *file,
1020 unsigned int set, unsigned int clear)
1022 struct usb_serial_port *port = tty->driver_data;
1023 struct ti_port *tport = usb_get_serial_port_data(port);
1025 unsigned long flags;
1027 dbg("%s - port %d", __func__, port->number);
1032 spin_lock_irqsave(&tport->tp_lock, flags);
1033 mcr = tport->tp_shadow_mcr;
1035 if (set & TIOCM_RTS)
1037 if (set & TIOCM_DTR)
1039 if (set & TIOCM_LOOP)
1042 if (clear & TIOCM_RTS)
1044 if (clear & TIOCM_DTR)
1046 if (clear & TIOCM_LOOP)
1047 mcr &= ~TI_MCR_LOOP;
1048 spin_unlock_irqrestore(&tport->tp_lock, flags);
1050 return ti_set_mcr(tport, mcr);
1054 static void ti_break(struct tty_struct *tty, int break_state)
1056 struct usb_serial_port *port = tty->driver_data;
1057 struct ti_port *tport = usb_get_serial_port_data(port);
1060 dbg("%s - state = %d", __func__, break_state);
1065 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1067 status = ti_write_byte(tport->tp_tdev,
1068 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1069 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1072 dbg("%s - error setting break, %d", __func__, status);
1076 static void ti_interrupt_callback(struct urb *urb)
1078 struct ti_device *tdev = urb->context;
1079 struct usb_serial_port *port;
1080 struct usb_serial *serial = tdev->td_serial;
1081 struct ti_port *tport;
1082 struct device *dev = &urb->dev->dev;
1083 unsigned char *data = urb->transfer_buffer;
1084 int length = urb->actual_length;
1087 int status = urb->status;
1091 dbg("%s", __func__);
1099 dbg("%s - urb shutting down, %d", __func__, status);
1100 tdev->td_urb_error = 1;
1103 dev_err(dev, "%s - nonzero urb status, %d\n",
1105 tdev->td_urb_error = 1;
1110 dbg("%s - bad packet size, %d", __func__, length);
1114 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1115 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1119 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1120 function = TI_GET_FUNC_FROM_CODE(data[0]);
1122 dbg("%s - port_number %d, function %d, data 0x%02X",
1123 __func__, port_number, function, data[1]);
1125 if (port_number >= serial->num_ports) {
1126 dev_err(dev, "%s - bad port number, %d\n",
1127 __func__, port_number);
1131 port = serial->port[port_number];
1133 tport = usb_get_serial_port_data(port);
1138 case TI_CODE_DATA_ERROR:
1139 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1140 __func__, port_number, data[1]);
1143 case TI_CODE_MODEM_STATUS:
1145 dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr);
1146 ti_handle_new_msr(tport, msr);
1150 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1156 retval = usb_submit_urb(urb, GFP_ATOMIC);
1158 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1163 static void ti_bulk_in_callback(struct urb *urb)
1165 struct ti_port *tport = urb->context;
1166 struct usb_serial_port *port = tport->tp_port;
1167 struct device *dev = &urb->dev->dev;
1168 int status = urb->status;
1170 struct tty_struct *tty;
1172 dbg("%s", __func__);
1180 dbg("%s - urb shutting down, %d", __func__, status);
1181 tport->tp_tdev->td_urb_error = 1;
1182 wake_up_interruptible(&tport->tp_write_wait);
1185 dev_err(dev, "%s - nonzero urb status, %d\n",
1187 tport->tp_tdev->td_urb_error = 1;
1188 wake_up_interruptible(&tport->tp_write_wait);
1191 if (status == -EPIPE)
1195 dev_err(dev, "%s - stopping read!\n", __func__);
1199 tty = tty_port_tty_get(&port->port);
1201 if (urb->actual_length) {
1202 usb_serial_debug_data(debug, dev, __func__,
1203 urb->actual_length, urb->transfer_buffer);
1205 if (!tport->tp_is_open)
1206 dbg("%s - port closed, dropping data",
1209 ti_recv(&urb->dev->dev, tty,
1210 urb->transfer_buffer,
1211 urb->actual_length);
1212 spin_lock(&tport->tp_lock);
1213 tport->tp_icount.rx += urb->actual_length;
1214 spin_unlock(&tport->tp_lock);
1220 /* continue to read unless stopping */
1221 spin_lock(&tport->tp_lock);
1222 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
1223 urb->dev = port->serial->dev;
1224 retval = usb_submit_urb(urb, GFP_ATOMIC);
1225 } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
1226 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1228 spin_unlock(&tport->tp_lock);
1230 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1235 static void ti_bulk_out_callback(struct urb *urb)
1237 struct ti_port *tport = urb->context;
1238 struct usb_serial_port *port = tport->tp_port;
1239 struct device *dev = &urb->dev->dev;
1240 int status = urb->status;
1242 dbg("%s - port %d", __func__, port->number);
1244 tport->tp_write_urb_in_use = 0;
1252 dbg("%s - urb shutting down, %d", __func__, status);
1253 tport->tp_tdev->td_urb_error = 1;
1254 wake_up_interruptible(&tport->tp_write_wait);
1257 dev_err(dev, "%s - nonzero urb status, %d\n",
1259 tport->tp_tdev->td_urb_error = 1;
1260 wake_up_interruptible(&tport->tp_write_wait);
1263 /* send any buffered data */
1268 static void ti_recv(struct device *dev, struct tty_struct *tty,
1269 unsigned char *data, int length)
1274 cnt = tty_insert_flip_string(tty, data, length);
1276 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1277 __func__, length - cnt);
1281 tty_flip_buffer_push(tty);
1284 } while (length > 0);
1289 static void ti_send(struct ti_port *tport)
1292 struct usb_serial_port *port = tport->tp_port;
1293 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1294 unsigned long flags;
1297 dbg("%s - port %d", __func__, port->number);
1299 spin_lock_irqsave(&tport->tp_lock, flags);
1301 if (tport->tp_write_urb_in_use)
1304 count = ti_buf_get(tport->tp_write_buf,
1305 port->write_urb->transfer_buffer,
1306 port->bulk_out_size);
1311 tport->tp_write_urb_in_use = 1;
1313 spin_unlock_irqrestore(&tport->tp_lock, flags);
1315 usb_serial_debug_data(debug, &port->dev, __func__, count,
1316 port->write_urb->transfer_buffer);
1318 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1319 usb_sndbulkpipe(port->serial->dev,
1320 port->bulk_out_endpointAddress),
1321 port->write_urb->transfer_buffer, count,
1322 ti_bulk_out_callback, tport);
1324 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1326 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1328 tport->tp_write_urb_in_use = 0;
1329 /* TODO: reschedule ti_send */
1331 spin_lock_irqsave(&tport->tp_lock, flags);
1332 tport->tp_icount.tx += count;
1333 spin_unlock_irqrestore(&tport->tp_lock, flags);
1336 /* more room in the buffer for new writes, wakeup */
1340 wake_up_interruptible(&tport->tp_write_wait);
1343 spin_unlock_irqrestore(&tport->tp_lock, flags);
1349 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1351 unsigned long flags;
1354 status = ti_write_byte(tport->tp_tdev,
1355 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1356 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1358 spin_lock_irqsave(&tport->tp_lock, flags);
1360 tport->tp_shadow_mcr = mcr;
1361 spin_unlock_irqrestore(&tport->tp_lock, flags);
1367 static int ti_get_lsr(struct ti_port *tport)
1370 struct ti_device *tdev = tport->tp_tdev;
1371 struct usb_serial_port *port = tport->tp_port;
1372 int port_number = port->number - port->serial->minor;
1373 struct ti_port_status *data;
1375 dbg("%s - port %d", __func__, port->number);
1377 size = sizeof(struct ti_port_status);
1378 data = kmalloc(size, GFP_KERNEL);
1380 dev_err(&port->dev, "%s - out of memory\n", __func__);
1384 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1385 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1388 "%s - get port status command failed, %d\n",
1393 dbg("%s - lsr 0x%02X", __func__, data->bLSR);
1395 tport->tp_lsr = data->bLSR;
1403 static int ti_get_serial_info(struct ti_port *tport,
1404 struct serial_struct __user *ret_arg)
1406 struct usb_serial_port *port = tport->tp_port;
1407 struct serial_struct ret_serial;
1412 memset(&ret_serial, 0, sizeof(ret_serial));
1414 ret_serial.type = PORT_16550A;
1415 ret_serial.line = port->serial->minor;
1416 ret_serial.port = port->number - port->serial->minor;
1417 ret_serial.flags = tport->tp_flags;
1418 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1419 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1420 ret_serial.closing_wait = tport->tp_closing_wait;
1422 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1429 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1430 struct serial_struct __user *new_arg)
1432 struct serial_struct new_serial;
1434 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1437 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1438 tport->tp_closing_wait = new_serial.closing_wait;
1444 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1446 struct async_icount *icount;
1447 struct tty_struct *tty;
1448 unsigned long flags;
1450 dbg("%s - msr 0x%02X", __func__, msr);
1452 if (msr & TI_MSR_DELTA_MASK) {
1453 spin_lock_irqsave(&tport->tp_lock, flags);
1454 icount = &tport->tp_icount;
1455 if (msr & TI_MSR_DELTA_CTS)
1457 if (msr & TI_MSR_DELTA_DSR)
1459 if (msr & TI_MSR_DELTA_CD)
1461 if (msr & TI_MSR_DELTA_RI)
1463 wake_up_interruptible(&tport->tp_msr_wait);
1464 spin_unlock_irqrestore(&tport->tp_lock, flags);
1467 tport->tp_msr = msr & TI_MSR_MASK;
1469 /* handle CTS flow control */
1470 tty = tty_port_tty_get(&tport->tp_port->port);
1471 if (tty && C_CRTSCTS(tty)) {
1472 if (msr & TI_MSR_CTS) {
1473 tty->hw_stopped = 0;
1476 tty->hw_stopped = 1;
1483 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1485 struct ti_device *tdev = tport->tp_tdev;
1486 struct usb_serial_port *port = tport->tp_port;
1489 dbg("%s - port %d", __func__, port->number);
1491 spin_lock_irq(&tport->tp_lock);
1493 /* wait for data to drain from the buffer */
1494 tdev->td_urb_error = 0;
1495 init_waitqueue_entry(&wait, current);
1496 add_wait_queue(&tport->tp_write_wait, &wait);
1498 set_current_state(TASK_INTERRUPTIBLE);
1499 if (ti_buf_data_avail(tport->tp_write_buf) == 0
1500 || timeout == 0 || signal_pending(current)
1501 || tdev->td_urb_error
1502 || port->serial->disconnected) /* disconnect */
1504 spin_unlock_irq(&tport->tp_lock);
1505 timeout = schedule_timeout(timeout);
1506 spin_lock_irq(&tport->tp_lock);
1508 set_current_state(TASK_RUNNING);
1509 remove_wait_queue(&tport->tp_write_wait, &wait);
1511 /* flush any remaining data in the buffer */
1513 ti_buf_clear(tport->tp_write_buf);
1515 spin_unlock_irq(&tport->tp_lock);
1517 mutex_lock(&port->serial->disc_mutex);
1518 /* wait for data to drain from the device */
1519 /* wait for empty tx register, plus 20 ms */
1521 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1522 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1523 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1524 && !port->serial->disconnected) {
1525 if (ti_get_lsr(tport))
1527 mutex_unlock(&port->serial->disc_mutex);
1528 msleep_interruptible(20);
1529 mutex_lock(&port->serial->disc_mutex);
1531 mutex_unlock(&port->serial->disc_mutex);
1535 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1537 unsigned long flags;
1539 spin_lock_irqsave(&tport->tp_lock, flags);
1541 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1542 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1544 spin_unlock_irqrestore(&tport->tp_lock, flags);
1548 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1552 unsigned long flags;
1554 spin_lock_irqsave(&tport->tp_lock, flags);
1556 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1557 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1558 urb = tport->tp_port->read_urb;
1559 spin_unlock_irqrestore(&tport->tp_lock, flags);
1560 urb->complete = ti_bulk_in_callback;
1561 urb->context = tport;
1562 urb->dev = tport->tp_port->serial->dev;
1563 status = usb_submit_urb(urb, GFP_KERNEL);
1565 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1566 spin_unlock_irqrestore(&tport->tp_lock, flags);
1573 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1574 __u16 moduleid, __u16 value, __u8 *data, int size)
1578 status = usb_control_msg(tdev->td_serial->dev,
1579 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1580 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1581 value, moduleid, data, size, 1000);
1593 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1594 __u16 moduleid, __u16 value, __u8 *data, int size)
1598 status = usb_control_msg(tdev->td_serial->dev,
1599 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1600 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1601 value, moduleid, data, size, 1000);
1613 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1614 __u8 mask, __u8 byte)
1618 struct ti_write_data_bytes *data;
1619 struct device *dev = &tdev->td_serial->dev->dev;
1621 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1622 __func__, addr, mask, byte);
1624 size = sizeof(struct ti_write_data_bytes) + 2;
1625 data = kmalloc(size, GFP_KERNEL);
1627 dev_err(dev, "%s - out of memory\n", __func__);
1631 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1632 data->bDataType = TI_RW_DATA_BYTE;
1633 data->bDataCounter = 1;
1634 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1635 data->wBaseAddrLo = cpu_to_be16(addr);
1636 data->bData[0] = mask;
1637 data->bData[1] = byte;
1639 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1640 (__u8 *)data, size);
1643 dev_err(dev, "%s - failed, %d\n", __func__, status);
1650 static int ti_do_download(struct usb_device *dev, int pipe,
1651 u8 *buffer, int size)
1656 struct ti_firmware_header *header;
1660 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1661 cs = (__u8)(cs + buffer[pos]);
1663 header = (struct ti_firmware_header *)buffer;
1664 header->wLength = cpu_to_le16((__u16)(size
1665 - sizeof(struct ti_firmware_header)));
1666 header->bCheckSum = cs;
1668 dbg("%s - downloading firmware", __func__);
1669 for (pos = 0; pos < size; pos += done) {
1670 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1671 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1679 static int ti_download_firmware(struct ti_device *tdev)
1684 struct usb_device *dev = tdev->td_serial->dev;
1685 unsigned int pipe = usb_sndbulkpipe(dev,
1686 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1687 const struct firmware *fw_p;
1690 /* try ID specific firmware first, then try generic firmware */
1691 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1692 dev->descriptor.idProduct);
1693 if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) {
1695 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1696 switch (dev->descriptor.idProduct) {
1697 case MTS_CDMA_PRODUCT_ID:
1698 strcpy(buf, "mts_cdma.fw");
1700 case MTS_GSM_PRODUCT_ID:
1701 strcpy(buf, "mts_gsm.fw");
1703 case MTS_EDGE_PRODUCT_ID:
1704 strcpy(buf, "mts_edge.fw");
1708 if (buf[0] == '\0') {
1709 if (tdev->td_is_3410)
1710 strcpy(buf, "ti_3410.fw");
1712 strcpy(buf, "ti_5052.fw");
1714 status = request_firmware(&fw_p, buf, &dev->dev);
1717 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1720 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1721 dev_err(&dev->dev, "%s - firmware too large\n", __func__);
1725 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1726 buffer = kmalloc(buffer_size, GFP_KERNEL);
1728 memcpy(buffer, fw_p->data, fw_p->size);
1729 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1730 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1735 release_firmware(fw_p);
1737 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1742 dbg("%s - download successful", __func__);
1748 /* Circular Buffer Functions */
1753 * Allocate a circular buffer and all associated memory.
1756 static struct circ_buf *ti_buf_alloc(void)
1758 struct circ_buf *cb;
1760 cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL);
1764 cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL);
1765 if (cb->buf == NULL) {
1779 * Free the buffer and all associated memory.
1782 static void ti_buf_free(struct circ_buf *cb)
1792 * Clear out all data in the circular buffer.
1795 static void ti_buf_clear(struct circ_buf *cb)
1797 cb->head = cb->tail = 0;
1804 * Return the number of bytes of data available in the circular
1808 static int ti_buf_data_avail(struct circ_buf *cb)
1810 return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1815 * ti_buf_space_avail
1817 * Return the number of bytes of space available in the circular
1821 static int ti_buf_space_avail(struct circ_buf *cb)
1823 return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1830 * Copy data data from a user buffer and put it into the circular buffer.
1831 * Restrict to the amount of space available.
1833 * Return the number of bytes copied.
1836 static int ti_buf_put(struct circ_buf *cb, const char *buf, int count)
1841 c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1846 memcpy(cb->buf + cb->head, buf, c);
1847 cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1);
1860 * Get data from the circular buffer and copy to the given buffer.
1861 * Restrict to the amount of data available.
1863 * Return the number of bytes copied.
1866 static int ti_buf_get(struct circ_buf *cb, char *buf, int count)
1871 c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1876 memcpy(buf, cb->buf + cb->tail, c);
1877 cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1);