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_LOW_LATENCY 0
54 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
56 /* supported setserial flags */
57 #define TI_SET_SERIAL_FLAGS (ASYNC_LOW_LATENCY)
60 #define TI_READ_URB_RUNNING 0
61 #define TI_READ_URB_STOPPING 1
62 #define TI_READ_URB_STOPPED 2
64 #define TI_EXTRA_VID_PID_COUNT 5
74 __u8 tp_uart_mode; /* 232 or 485 modes */
75 unsigned int tp_uart_base_addr;
77 int tp_closing_wait;/* in .01 secs */
78 struct async_icount tp_icount;
79 wait_queue_head_t tp_msr_wait; /* wait for msr change */
80 wait_queue_head_t tp_write_wait;
81 struct ti_device *tp_tdev;
82 struct usb_serial_port *tp_port;
84 int tp_read_urb_state;
85 int tp_write_urb_in_use;
86 struct circ_buf *tp_write_buf;
90 struct mutex td_open_close_lock;
91 int td_open_port_count;
92 struct usb_serial *td_serial;
98 /* Function Declarations */
100 static int ti_startup(struct usb_serial *serial);
101 static void ti_shutdown(struct usb_serial *serial);
102 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port,
104 static void ti_close(struct tty_struct *tty, struct usb_serial_port *port,
106 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
107 const unsigned char *data, int count);
108 static int ti_write_room(struct tty_struct *tty);
109 static int ti_chars_in_buffer(struct tty_struct *tty);
110 static void ti_throttle(struct tty_struct *tty);
111 static void ti_unthrottle(struct tty_struct *tty);
112 static int ti_ioctl(struct tty_struct *tty, struct file *file,
113 unsigned int cmd, unsigned long arg);
114 static void ti_set_termios(struct tty_struct *tty,
115 struct usb_serial_port *port, struct ktermios *old_termios);
116 static int ti_tiocmget(struct tty_struct *tty, struct file *file);
117 static int ti_tiocmset(struct tty_struct *tty, struct file *file,
118 unsigned int set, unsigned int clear);
119 static void ti_break(struct tty_struct *tty, int break_state);
120 static void ti_interrupt_callback(struct urb *urb);
121 static void ti_bulk_in_callback(struct urb *urb);
122 static void ti_bulk_out_callback(struct urb *urb);
124 static void ti_recv(struct device *dev, struct tty_struct *tty,
125 unsigned char *data, int length);
126 static void ti_send(struct ti_port *tport);
127 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
128 static int ti_get_lsr(struct ti_port *tport);
129 static int ti_get_serial_info(struct ti_port *tport,
130 struct serial_struct __user *ret_arg);
131 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
132 struct serial_struct __user *new_arg);
133 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
135 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
137 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
138 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
140 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
141 __u16 moduleid, __u16 value, __u8 *data, int size);
142 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
143 __u16 moduleid, __u16 value, __u8 *data, int size);
145 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
146 __u8 mask, __u8 byte);
148 static int ti_download_firmware(struct ti_device *tdev);
150 /* circular buffer */
151 static struct circ_buf *ti_buf_alloc(void);
152 static void ti_buf_free(struct circ_buf *cb);
153 static void ti_buf_clear(struct circ_buf *cb);
154 static int ti_buf_data_avail(struct circ_buf *cb);
155 static int ti_buf_space_avail(struct circ_buf *cb);
156 static int ti_buf_put(struct circ_buf *cb, const char *buf, int count);
157 static int ti_buf_get(struct circ_buf *cb, char *buf, int count);
162 /* module parameters */
164 static int low_latency = TI_DEFAULT_LOW_LATENCY;
165 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
166 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
167 static unsigned int vendor_3410_count;
168 static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
169 static unsigned int product_3410_count;
170 static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
171 static unsigned int vendor_5052_count;
172 static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
173 static unsigned int product_5052_count;
175 /* supported devices */
176 /* the array dimension is the number of default entries plus */
177 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
179 static struct usb_device_id ti_id_table_3410[7+TI_EXTRA_VID_PID_COUNT+1] = {
180 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
181 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
182 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
183 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
184 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
185 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
186 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
189 static struct usb_device_id ti_id_table_5052[4+TI_EXTRA_VID_PID_COUNT+1] = {
190 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
191 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
192 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
193 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
196 static struct usb_device_id ti_id_table_combined[6+2*TI_EXTRA_VID_PID_COUNT+1] = {
197 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
198 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
200 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
201 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
202 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
203 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
205 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
206 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
207 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
211 static struct usb_driver ti_usb_driver = {
212 .name = "ti_usb_3410_5052",
213 .probe = usb_serial_probe,
214 .disconnect = usb_serial_disconnect,
215 .id_table = ti_id_table_combined,
219 static struct usb_serial_driver ti_1port_device = {
221 .owner = THIS_MODULE,
222 .name = "ti_usb_3410_5052_1",
224 .description = "TI USB 3410 1 port adapter",
225 .usb_driver = &ti_usb_driver,
226 .id_table = ti_id_table_3410,
228 .attach = ti_startup,
229 .shutdown = ti_shutdown,
233 .write_room = ti_write_room,
234 .chars_in_buffer = ti_chars_in_buffer,
235 .throttle = ti_throttle,
236 .unthrottle = ti_unthrottle,
238 .set_termios = ti_set_termios,
239 .tiocmget = ti_tiocmget,
240 .tiocmset = ti_tiocmset,
241 .break_ctl = ti_break,
242 .read_int_callback = ti_interrupt_callback,
243 .read_bulk_callback = ti_bulk_in_callback,
244 .write_bulk_callback = ti_bulk_out_callback,
247 static struct usb_serial_driver ti_2port_device = {
249 .owner = THIS_MODULE,
250 .name = "ti_usb_3410_5052_2",
252 .description = "TI USB 5052 2 port adapter",
253 .usb_driver = &ti_usb_driver,
254 .id_table = ti_id_table_5052,
256 .attach = ti_startup,
257 .shutdown = ti_shutdown,
261 .write_room = ti_write_room,
262 .chars_in_buffer = ti_chars_in_buffer,
263 .throttle = ti_throttle,
264 .unthrottle = ti_unthrottle,
266 .set_termios = ti_set_termios,
267 .tiocmget = ti_tiocmget,
268 .tiocmset = ti_tiocmset,
269 .break_ctl = ti_break,
270 .read_int_callback = ti_interrupt_callback,
271 .read_bulk_callback = ti_bulk_in_callback,
272 .write_bulk_callback = ti_bulk_out_callback,
278 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
279 MODULE_DESCRIPTION(TI_DRIVER_DESC);
280 MODULE_VERSION(TI_DRIVER_VERSION);
281 MODULE_LICENSE("GPL");
283 MODULE_FIRMWARE("ti_3410.fw");
284 MODULE_FIRMWARE("ti_5052.fw");
286 module_param(debug, bool, S_IRUGO | S_IWUSR);
287 MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
289 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
290 MODULE_PARM_DESC(low_latency,
291 "TTY low_latency flag, 0=off, 1=on, default is off");
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_flags = low_latency ? ASYNC_LOW_LATENCY : 0;
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_shutdown(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);
487 usb_set_serial_port_data(serial->port[i], NULL);
492 usb_set_serial_data(serial, NULL);
496 static int ti_open(struct tty_struct *tty,
497 struct usb_serial_port *port, struct file *file)
499 struct ti_port *tport = usb_get_serial_port_data(port);
500 struct ti_device *tdev;
501 struct usb_device *dev;
505 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
506 TI_PIPE_TIMEOUT_ENABLE |
507 (TI_TRANSFER_TIMEOUT << 2));
509 dbg("%s - port %d", __func__, port->number);
514 dev = port->serial->dev;
515 tdev = tport->tp_tdev;
517 /* only one open on any port on a device at a time */
518 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
523 (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0;
525 port_number = port->number - port->serial->minor;
527 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
530 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
532 /* start interrupt urb the first time a port is opened on this device */
533 if (tdev->td_open_port_count == 0) {
534 dbg("%s - start interrupt in urb", __func__);
535 urb = tdev->td_serial->port[0]->interrupt_in_urb;
537 dev_err(&port->dev, "%s - no interrupt urb\n",
542 urb->complete = ti_interrupt_callback;
545 status = usb_submit_urb(urb, GFP_KERNEL);
548 "%s - submit interrupt urb failed, %d\n",
555 ti_set_termios(tty, port, tty->termios);
557 dbg("%s - sending TI_OPEN_PORT", __func__);
558 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
559 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
561 dev_err(&port->dev, "%s - cannot send open command, %d\n",
566 dbg("%s - sending TI_START_PORT", __func__);
567 status = ti_command_out_sync(tdev, TI_START_PORT,
568 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
570 dev_err(&port->dev, "%s - cannot send start command, %d\n",
575 dbg("%s - sending TI_PURGE_PORT", __func__);
576 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
577 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
579 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
583 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
584 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
586 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
591 /* reset the data toggle on the bulk endpoints to work around bug in
592 * host controllers where things get out of sync some times */
593 usb_clear_halt(dev, port->write_urb->pipe);
594 usb_clear_halt(dev, port->read_urb->pipe);
597 ti_set_termios(tty, port, tty->termios);
599 dbg("%s - sending TI_OPEN_PORT (2)", __func__);
600 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
601 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
603 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
608 dbg("%s - sending TI_START_PORT (2)", __func__);
609 status = ti_command_out_sync(tdev, TI_START_PORT,
610 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
612 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
618 dbg("%s - start read urb", __func__);
619 urb = port->read_urb;
621 dev_err(&port->dev, "%s - no read urb\n", __func__);
625 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
626 urb->complete = ti_bulk_in_callback;
627 urb->context = tport;
629 status = usb_submit_urb(urb, GFP_KERNEL);
631 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
636 tport->tp_is_open = 1;
637 ++tdev->td_open_port_count;
642 if (tdev->td_open_port_count == 0)
643 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
645 mutex_unlock(&tdev->td_open_close_lock);
646 dbg("%s - exit %d", __func__, status);
651 static void ti_close(struct tty_struct *tty, struct usb_serial_port *port,
654 struct ti_device *tdev;
655 struct ti_port *tport;
660 dbg("%s - port %d", __func__, port->number);
662 tdev = usb_get_serial_data(port->serial);
663 tport = usb_get_serial_port_data(port);
664 if (tdev == NULL || tport == NULL)
667 tport->tp_is_open = 0;
669 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
671 usb_kill_urb(port->read_urb);
672 usb_kill_urb(port->write_urb);
673 tport->tp_write_urb_in_use = 0;
675 port_number = port->number - port->serial->minor;
677 dbg("%s - sending TI_CLOSE_PORT", __func__);
678 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
679 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
682 "%s - cannot send close port command, %d\n"
685 /* if mutex_lock is interrupted, continue anyway */
686 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
687 --tport->tp_tdev->td_open_port_count;
688 if (tport->tp_tdev->td_open_port_count <= 0) {
689 /* last port is closed, shut down interrupt urb */
690 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
691 tport->tp_tdev->td_open_port_count = 0;
694 mutex_unlock(&tdev->td_open_close_lock);
696 dbg("%s - exit", __func__);
700 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
701 const unsigned char *data, int count)
703 struct ti_port *tport = usb_get_serial_port_data(port);
706 dbg("%s - port %d", __func__, port->number);
709 dbg("%s - write request of 0 bytes", __func__);
713 if (tport == NULL || !tport->tp_is_open)
716 spin_lock_irqsave(&tport->tp_lock, flags);
717 count = ti_buf_put(tport->tp_write_buf, data, count);
718 spin_unlock_irqrestore(&tport->tp_lock, flags);
726 static int ti_write_room(struct tty_struct *tty)
728 struct usb_serial_port *port = tty->driver_data;
729 struct ti_port *tport = usb_get_serial_port_data(port);
733 dbg("%s - port %d", __func__, port->number);
738 spin_lock_irqsave(&tport->tp_lock, flags);
739 room = ti_buf_space_avail(tport->tp_write_buf);
740 spin_unlock_irqrestore(&tport->tp_lock, flags);
742 dbg("%s - returns %d", __func__, room);
747 static int ti_chars_in_buffer(struct tty_struct *tty)
749 struct usb_serial_port *port = tty->driver_data;
750 struct ti_port *tport = usb_get_serial_port_data(port);
754 dbg("%s - port %d", __func__, port->number);
759 spin_lock_irqsave(&tport->tp_lock, flags);
760 chars = ti_buf_data_avail(tport->tp_write_buf);
761 spin_unlock_irqrestore(&tport->tp_lock, flags);
763 dbg("%s - returns %d", __func__, chars);
768 static void ti_throttle(struct tty_struct *tty)
770 struct usb_serial_port *port = tty->driver_data;
771 struct ti_port *tport = usb_get_serial_port_data(port);
773 dbg("%s - port %d", __func__, port->number);
778 if (I_IXOFF(tty) || C_CRTSCTS(tty))
779 ti_stop_read(tport, tty);
784 static void ti_unthrottle(struct tty_struct *tty)
786 struct usb_serial_port *port = tty->driver_data;
787 struct ti_port *tport = usb_get_serial_port_data(port);
790 dbg("%s - port %d", __func__, port->number);
795 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
796 status = ti_restart_read(tport, tty);
798 dev_err(&port->dev, "%s - cannot restart read, %d\n",
804 static int ti_ioctl(struct tty_struct *tty, struct file *file,
805 unsigned int cmd, unsigned long arg)
807 struct usb_serial_port *port = tty->driver_data;
808 struct ti_port *tport = usb_get_serial_port_data(port);
809 struct async_icount cnow;
810 struct async_icount cprev;
812 dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
819 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
820 return ti_get_serial_info(tport,
821 (struct serial_struct __user *)arg);
823 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
824 return ti_set_serial_info(tty, tport,
825 (struct serial_struct __user *)arg);
827 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
828 cprev = tport->tp_icount;
830 interruptible_sleep_on(&tport->tp_msr_wait);
831 if (signal_pending(current))
833 cnow = tport->tp_icount;
834 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
835 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
836 return -EIO; /* no change => error */
837 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
838 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
839 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
840 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
846 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
847 __func__, port->number,
848 tport->tp_icount.rx, tport->tp_icount.tx);
849 if (copy_to_user((void __user *)arg, &tport->tp_icount,
850 sizeof(tport->tp_icount)))
858 static void ti_set_termios(struct tty_struct *tty,
859 struct usb_serial_port *port, struct ktermios *old_termios)
861 struct ti_port *tport = usb_get_serial_port_data(port);
862 struct ti_uart_config *config;
863 tcflag_t cflag, iflag;
866 int port_number = port->number - port->serial->minor;
869 dbg("%s - port %d", __func__, port->number);
871 cflag = tty->termios->c_cflag;
872 iflag = tty->termios->c_iflag;
874 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
875 dbg("%s - old clfag %08x, old iflag %08x", __func__,
876 old_termios->c_cflag, old_termios->c_iflag);
881 config = kmalloc(sizeof(*config), GFP_KERNEL);
883 dev_err(&port->dev, "%s - out of memory\n", __func__);
889 /* these flags must be set */
890 config->wFlags |= TI_UART_ENABLE_MS_INTS;
891 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
892 config->bUartMode = (__u8)(tport->tp_uart_mode);
894 switch (cflag & CSIZE) {
896 config->bDataBits = TI_UART_5_DATA_BITS;
899 config->bDataBits = TI_UART_6_DATA_BITS;
902 config->bDataBits = TI_UART_7_DATA_BITS;
906 config->bDataBits = TI_UART_8_DATA_BITS;
910 /* CMSPAR isn't supported by this driver */
911 tty->termios->c_cflag &= ~CMSPAR;
913 if (cflag & PARENB) {
914 if (cflag & PARODD) {
915 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
916 config->bParity = TI_UART_ODD_PARITY;
918 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
919 config->bParity = TI_UART_EVEN_PARITY;
922 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
923 config->bParity = TI_UART_NO_PARITY;
927 config->bStopBits = TI_UART_2_STOP_BITS;
929 config->bStopBits = TI_UART_1_STOP_BITS;
931 if (cflag & CRTSCTS) {
932 /* RTS flow control must be off to drop RTS for baud rate B0 */
933 if ((cflag & CBAUD) != B0)
934 config->wFlags |= TI_UART_ENABLE_RTS_IN;
935 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
938 ti_restart_read(tport, tty);
941 if (I_IXOFF(tty) || I_IXON(tty)) {
942 config->cXon = START_CHAR(tty);
943 config->cXoff = STOP_CHAR(tty);
946 config->wFlags |= TI_UART_ENABLE_X_IN;
948 ti_restart_read(tport, tty);
951 config->wFlags |= TI_UART_ENABLE_X_OUT;
954 baud = tty_get_baud_rate(tty);
957 if (tport->tp_tdev->td_is_3410)
958 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
960 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
962 /* FIXME: Should calculate resulting baud here and report it back */
963 if ((cflag & CBAUD) != B0)
964 tty_encode_baud_rate(tty, baud, baud);
966 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
967 __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
969 cpu_to_be16s(&config->wBaudRate);
970 cpu_to_be16s(&config->wFlags);
972 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
973 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
976 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
977 __func__, port_number, status);
979 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
980 mcr = tport->tp_shadow_mcr;
981 /* if baud rate is B0, clear RTS and DTR */
982 if ((cflag & CBAUD) == B0)
983 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
984 status = ti_set_mcr(tport, mcr);
987 "%s - cannot set modem control on port %d, %d\n",
988 __func__, port_number, status);
994 static int ti_tiocmget(struct tty_struct *tty, struct file *file)
996 struct usb_serial_port *port = tty->driver_data;
997 struct ti_port *tport = usb_get_serial_port_data(port);
1001 unsigned long flags;
1003 dbg("%s - port %d", __func__, port->number);
1008 spin_lock_irqsave(&tport->tp_lock, flags);
1009 msr = tport->tp_msr;
1010 mcr = tport->tp_shadow_mcr;
1011 spin_unlock_irqrestore(&tport->tp_lock, flags);
1013 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1014 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1015 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1016 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1017 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1018 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1019 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1021 dbg("%s - 0x%04X", __func__, result);
1027 static int ti_tiocmset(struct tty_struct *tty, struct file *file,
1028 unsigned int set, unsigned int clear)
1030 struct usb_serial_port *port = tty->driver_data;
1031 struct ti_port *tport = usb_get_serial_port_data(port);
1033 unsigned long flags;
1035 dbg("%s - port %d", __func__, port->number);
1040 spin_lock_irqsave(&tport->tp_lock, flags);
1041 mcr = tport->tp_shadow_mcr;
1043 if (set & TIOCM_RTS)
1045 if (set & TIOCM_DTR)
1047 if (set & TIOCM_LOOP)
1050 if (clear & TIOCM_RTS)
1052 if (clear & TIOCM_DTR)
1054 if (clear & TIOCM_LOOP)
1055 mcr &= ~TI_MCR_LOOP;
1056 spin_unlock_irqrestore(&tport->tp_lock, flags);
1058 return ti_set_mcr(tport, mcr);
1062 static void ti_break(struct tty_struct *tty, int break_state)
1064 struct usb_serial_port *port = tty->driver_data;
1065 struct ti_port *tport = usb_get_serial_port_data(port);
1068 dbg("%s - state = %d", __func__, break_state);
1073 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1075 status = ti_write_byte(tport->tp_tdev,
1076 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1077 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1080 dbg("%s - error setting break, %d", __func__, status);
1084 static void ti_interrupt_callback(struct urb *urb)
1086 struct ti_device *tdev = urb->context;
1087 struct usb_serial_port *port;
1088 struct usb_serial *serial = tdev->td_serial;
1089 struct ti_port *tport;
1090 struct device *dev = &urb->dev->dev;
1091 unsigned char *data = urb->transfer_buffer;
1092 int length = urb->actual_length;
1095 int status = urb->status;
1099 dbg("%s", __func__);
1107 dbg("%s - urb shutting down, %d", __func__, status);
1108 tdev->td_urb_error = 1;
1111 dev_err(dev, "%s - nonzero urb status, %d\n",
1113 tdev->td_urb_error = 1;
1118 dbg("%s - bad packet size, %d", __func__, length);
1122 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1123 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1127 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1128 function = TI_GET_FUNC_FROM_CODE(data[0]);
1130 dbg("%s - port_number %d, function %d, data 0x%02X",
1131 __func__, port_number, function, data[1]);
1133 if (port_number >= serial->num_ports) {
1134 dev_err(dev, "%s - bad port number, %d\n",
1135 __func__, port_number);
1139 port = serial->port[port_number];
1141 tport = usb_get_serial_port_data(port);
1146 case TI_CODE_DATA_ERROR:
1147 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1148 __func__, port_number, data[1]);
1151 case TI_CODE_MODEM_STATUS:
1153 dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr);
1154 ti_handle_new_msr(tport, msr);
1158 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1164 retval = usb_submit_urb(urb, GFP_ATOMIC);
1166 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1171 static void ti_bulk_in_callback(struct urb *urb)
1173 struct ti_port *tport = urb->context;
1174 struct usb_serial_port *port = tport->tp_port;
1175 struct device *dev = &urb->dev->dev;
1176 int status = urb->status;
1178 struct tty_struct *tty;
1180 dbg("%s", __func__);
1188 dbg("%s - urb shutting down, %d", __func__, status);
1189 tport->tp_tdev->td_urb_error = 1;
1190 wake_up_interruptible(&tport->tp_write_wait);
1193 dev_err(dev, "%s - nonzero urb status, %d\n",
1195 tport->tp_tdev->td_urb_error = 1;
1196 wake_up_interruptible(&tport->tp_write_wait);
1199 if (status == -EPIPE)
1203 dev_err(dev, "%s - stopping read!\n", __func__);
1207 tty = tty_port_tty_get(&port->port);
1208 if (tty && urb->actual_length) {
1209 usb_serial_debug_data(debug, dev, __func__,
1210 urb->actual_length, urb->transfer_buffer);
1212 if (!tport->tp_is_open)
1213 dbg("%s - port closed, dropping data", __func__);
1215 ti_recv(&urb->dev->dev, tty,
1216 urb->transfer_buffer,
1217 urb->actual_length);
1219 spin_lock(&tport->tp_lock);
1220 tport->tp_icount.rx += urb->actual_length;
1221 spin_unlock(&tport->tp_lock);
1226 /* continue to read unless stopping */
1227 spin_lock(&tport->tp_lock);
1228 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
1229 urb->dev = port->serial->dev;
1230 retval = usb_submit_urb(urb, GFP_ATOMIC);
1231 } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
1232 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1234 spin_unlock(&tport->tp_lock);
1236 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1241 static void ti_bulk_out_callback(struct urb *urb)
1243 struct ti_port *tport = urb->context;
1244 struct usb_serial_port *port = tport->tp_port;
1245 struct device *dev = &urb->dev->dev;
1246 int status = urb->status;
1248 dbg("%s - port %d", __func__, port->number);
1250 tport->tp_write_urb_in_use = 0;
1258 dbg("%s - urb shutting down, %d", __func__, status);
1259 tport->tp_tdev->td_urb_error = 1;
1260 wake_up_interruptible(&tport->tp_write_wait);
1263 dev_err(dev, "%s - nonzero urb status, %d\n",
1265 tport->tp_tdev->td_urb_error = 1;
1266 wake_up_interruptible(&tport->tp_write_wait);
1269 /* send any buffered data */
1274 static void ti_recv(struct device *dev, struct tty_struct *tty,
1275 unsigned char *data, int length)
1280 cnt = tty_buffer_request_room(tty, length);
1282 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1283 __func__, length - cnt);
1287 tty_insert_flip_string(tty, data, cnt);
1288 tty_flip_buffer_push(tty);
1291 } while (length > 0);
1296 static void ti_send(struct ti_port *tport)
1299 struct usb_serial_port *port = tport->tp_port;
1300 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1301 unsigned long flags;
1304 dbg("%s - port %d", __func__, port->number);
1306 spin_lock_irqsave(&tport->tp_lock, flags);
1308 if (tport->tp_write_urb_in_use)
1311 count = ti_buf_get(tport->tp_write_buf,
1312 port->write_urb->transfer_buffer,
1313 port->bulk_out_size);
1318 tport->tp_write_urb_in_use = 1;
1320 spin_unlock_irqrestore(&tport->tp_lock, flags);
1322 usb_serial_debug_data(debug, &port->dev, __func__, count,
1323 port->write_urb->transfer_buffer);
1325 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1326 usb_sndbulkpipe(port->serial->dev,
1327 port->bulk_out_endpointAddress),
1328 port->write_urb->transfer_buffer, count,
1329 ti_bulk_out_callback, tport);
1331 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1333 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1335 tport->tp_write_urb_in_use = 0;
1336 /* TODO: reschedule ti_send */
1338 spin_lock_irqsave(&tport->tp_lock, flags);
1339 tport->tp_icount.tx += count;
1340 spin_unlock_irqrestore(&tport->tp_lock, flags);
1343 /* more room in the buffer for new writes, wakeup */
1347 wake_up_interruptible(&tport->tp_write_wait);
1350 spin_unlock_irqrestore(&tport->tp_lock, flags);
1356 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1358 unsigned long flags;
1361 status = ti_write_byte(tport->tp_tdev,
1362 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1363 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1365 spin_lock_irqsave(&tport->tp_lock, flags);
1367 tport->tp_shadow_mcr = mcr;
1368 spin_unlock_irqrestore(&tport->tp_lock, flags);
1374 static int ti_get_lsr(struct ti_port *tport)
1377 struct ti_device *tdev = tport->tp_tdev;
1378 struct usb_serial_port *port = tport->tp_port;
1379 int port_number = port->number - port->serial->minor;
1380 struct ti_port_status *data;
1382 dbg("%s - port %d", __func__, port->number);
1384 size = sizeof(struct ti_port_status);
1385 data = kmalloc(size, GFP_KERNEL);
1387 dev_err(&port->dev, "%s - out of memory\n", __func__);
1391 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1392 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1395 "%s - get port status command failed, %d\n",
1400 dbg("%s - lsr 0x%02X", __func__, data->bLSR);
1402 tport->tp_lsr = data->bLSR;
1410 static int ti_get_serial_info(struct ti_port *tport,
1411 struct serial_struct __user *ret_arg)
1413 struct usb_serial_port *port = tport->tp_port;
1414 struct serial_struct ret_serial;
1419 memset(&ret_serial, 0, sizeof(ret_serial));
1421 ret_serial.type = PORT_16550A;
1422 ret_serial.line = port->serial->minor;
1423 ret_serial.port = port->number - port->serial->minor;
1424 ret_serial.flags = tport->tp_flags;
1425 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1426 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1427 ret_serial.closing_wait = tport->tp_closing_wait;
1429 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1436 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1437 struct serial_struct __user *new_arg)
1439 struct serial_struct new_serial;
1441 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1444 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1445 tty->low_latency = (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0;
1446 tport->tp_closing_wait = new_serial.closing_wait;
1452 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1454 struct async_icount *icount;
1455 struct tty_struct *tty;
1456 unsigned long flags;
1458 dbg("%s - msr 0x%02X", __func__, msr);
1460 if (msr & TI_MSR_DELTA_MASK) {
1461 spin_lock_irqsave(&tport->tp_lock, flags);
1462 icount = &tport->tp_icount;
1463 if (msr & TI_MSR_DELTA_CTS)
1465 if (msr & TI_MSR_DELTA_DSR)
1467 if (msr & TI_MSR_DELTA_CD)
1469 if (msr & TI_MSR_DELTA_RI)
1471 wake_up_interruptible(&tport->tp_msr_wait);
1472 spin_unlock_irqrestore(&tport->tp_lock, flags);
1475 tport->tp_msr = msr & TI_MSR_MASK;
1477 /* handle CTS flow control */
1478 tty = tty_port_tty_get(&tport->tp_port->port);
1479 if (tty && C_CRTSCTS(tty)) {
1480 if (msr & TI_MSR_CTS) {
1481 tty->hw_stopped = 0;
1484 tty->hw_stopped = 1;
1491 static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1493 struct ti_device *tdev = tport->tp_tdev;
1494 struct usb_serial_port *port = tport->tp_port;
1497 dbg("%s - port %d", __func__, port->number);
1499 spin_lock_irq(&tport->tp_lock);
1501 /* wait for data to drain from the buffer */
1502 tdev->td_urb_error = 0;
1503 init_waitqueue_entry(&wait, current);
1504 add_wait_queue(&tport->tp_write_wait, &wait);
1506 set_current_state(TASK_INTERRUPTIBLE);
1507 if (ti_buf_data_avail(tport->tp_write_buf) == 0
1508 || timeout == 0 || signal_pending(current)
1509 || tdev->td_urb_error
1510 || port->serial->disconnected) /* disconnect */
1512 spin_unlock_irq(&tport->tp_lock);
1513 timeout = schedule_timeout(timeout);
1514 spin_lock_irq(&tport->tp_lock);
1516 set_current_state(TASK_RUNNING);
1517 remove_wait_queue(&tport->tp_write_wait, &wait);
1519 /* flush any remaining data in the buffer */
1521 ti_buf_clear(tport->tp_write_buf);
1523 spin_unlock_irq(&tport->tp_lock);
1525 mutex_lock(&port->serial->disc_mutex);
1526 /* wait for data to drain from the device */
1527 /* wait for empty tx register, plus 20 ms */
1529 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1530 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1531 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1532 && !port->serial->disconnected) {
1533 if (ti_get_lsr(tport))
1535 mutex_unlock(&port->serial->disc_mutex);
1536 msleep_interruptible(20);
1537 mutex_lock(&port->serial->disc_mutex);
1539 mutex_unlock(&port->serial->disc_mutex);
1543 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1545 unsigned long flags;
1547 spin_lock_irqsave(&tport->tp_lock, flags);
1549 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1550 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1552 spin_unlock_irqrestore(&tport->tp_lock, flags);
1556 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1560 unsigned long flags;
1562 spin_lock_irqsave(&tport->tp_lock, flags);
1564 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1565 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1566 urb = tport->tp_port->read_urb;
1567 spin_unlock_irqrestore(&tport->tp_lock, flags);
1568 urb->complete = ti_bulk_in_callback;
1569 urb->context = tport;
1570 urb->dev = tport->tp_port->serial->dev;
1571 status = usb_submit_urb(urb, GFP_KERNEL);
1573 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1574 spin_unlock_irqrestore(&tport->tp_lock, flags);
1581 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1582 __u16 moduleid, __u16 value, __u8 *data, int size)
1586 status = usb_control_msg(tdev->td_serial->dev,
1587 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1588 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1589 value, moduleid, data, size, 1000);
1601 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1602 __u16 moduleid, __u16 value, __u8 *data, int size)
1606 status = usb_control_msg(tdev->td_serial->dev,
1607 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1608 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1609 value, moduleid, data, size, 1000);
1621 static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1622 __u8 mask, __u8 byte)
1626 struct ti_write_data_bytes *data;
1627 struct device *dev = &tdev->td_serial->dev->dev;
1629 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1630 __func__, addr, mask, byte);
1632 size = sizeof(struct ti_write_data_bytes) + 2;
1633 data = kmalloc(size, GFP_KERNEL);
1635 dev_err(dev, "%s - out of memory\n", __func__);
1639 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1640 data->bDataType = TI_RW_DATA_BYTE;
1641 data->bDataCounter = 1;
1642 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1643 data->wBaseAddrLo = cpu_to_be16(addr);
1644 data->bData[0] = mask;
1645 data->bData[1] = byte;
1647 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1648 (__u8 *)data, size);
1651 dev_err(dev, "%s - failed, %d\n", __func__, status);
1658 static int ti_do_download(struct usb_device *dev, int pipe,
1659 u8 *buffer, int size)
1664 struct ti_firmware_header *header;
1668 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1669 cs = (__u8)(cs + buffer[pos]);
1671 header = (struct ti_firmware_header *)buffer;
1672 header->wLength = cpu_to_le16((__u16)(size
1673 - sizeof(struct ti_firmware_header)));
1674 header->bCheckSum = cs;
1676 dbg("%s - downloading firmware", __func__);
1677 for (pos = 0; pos < size; pos += done) {
1678 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1679 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1687 static int ti_download_firmware(struct ti_device *tdev)
1692 struct usb_device *dev = tdev->td_serial->dev;
1693 unsigned int pipe = usb_sndbulkpipe(dev,
1694 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1695 const struct firmware *fw_p;
1698 /* try ID specific firmware first, then try generic firmware */
1699 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1700 dev->descriptor.idProduct);
1701 if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) {
1703 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1704 switch (dev->descriptor.idProduct) {
1705 case MTS_CDMA_PRODUCT_ID:
1706 strcpy(buf, "mts_cdma.fw");
1708 case MTS_GSM_PRODUCT_ID:
1709 strcpy(buf, "mts_gsm.fw");
1711 case MTS_EDGE_PRODUCT_ID:
1712 strcpy(buf, "mts_edge.fw");
1716 if (buf[0] == '\0') {
1717 if (tdev->td_is_3410)
1718 strcpy(buf, "ti_3410.fw");
1720 strcpy(buf, "ti_5052.fw");
1722 status = request_firmware(&fw_p, buf, &dev->dev);
1725 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1728 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1729 dev_err(&dev->dev, "%s - firmware too large\n", __func__);
1733 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1734 buffer = kmalloc(buffer_size, GFP_KERNEL);
1736 memcpy(buffer, fw_p->data, fw_p->size);
1737 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1738 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1743 release_firmware(fw_p);
1745 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1750 dbg("%s - download successful", __func__);
1756 /* Circular Buffer Functions */
1761 * Allocate a circular buffer and all associated memory.
1764 static struct circ_buf *ti_buf_alloc(void)
1766 struct circ_buf *cb;
1768 cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL);
1772 cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL);
1773 if (cb->buf == NULL) {
1787 * Free the buffer and all associated memory.
1790 static void ti_buf_free(struct circ_buf *cb)
1800 * Clear out all data in the circular buffer.
1803 static void ti_buf_clear(struct circ_buf *cb)
1805 cb->head = cb->tail = 0;
1812 * Return the number of bytes of data available in the circular
1816 static int ti_buf_data_avail(struct circ_buf *cb)
1818 return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1823 * ti_buf_space_avail
1825 * Return the number of bytes of space available in the circular
1829 static int ti_buf_space_avail(struct circ_buf *cb)
1831 return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1838 * Copy data data from a user buffer and put it into the circular buffer.
1839 * Restrict to the amount of space available.
1841 * Return the number of bytes copied.
1844 static int ti_buf_put(struct circ_buf *cb, const char *buf, int count)
1849 c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1854 memcpy(cb->buf + cb->head, buf, c);
1855 cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1);
1868 * Get data from the circular buffer and copy to the given buffer.
1869 * Restrict to the amount of data available.
1871 * Return the number of bytes copied.
1874 static int ti_buf_get(struct circ_buf *cb, char *buf, int count)
1879 c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1884 memcpy(buf, cb->buf + cb->tail, c);
1885 cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1);