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-rw-r--r--drivers/usb/serial/ti_usb_3410_5052.c266
1 files changed, 151 insertions, 115 deletions
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 48831a755fc1..e39c779e4160 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -16,7 +16,7 @@
16 * For questions or problems with this driver, contact Texas Instruments 16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or 17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>. 18 * Peter Berger <pberger@brimson.com>.
19 * 19 *
20 * This driver needs this hotplug script in /etc/hotplug/usb/ti_usb_3410_5052 20 * This driver needs this hotplug script in /etc/hotplug/usb/ti_usb_3410_5052
21 * or in /etc/hotplug.d/usb/ti_usb_3410_5052.hotplug to set the device 21 * or in /etc/hotplug.d/usb/ti_usb_3410_5052.hotplug to set the device
22 * configuration. 22 * configuration.
@@ -82,7 +82,7 @@
82#include <linux/serial.h> 82#include <linux/serial.h>
83#include <linux/circ_buf.h> 83#include <linux/circ_buf.h>
84#include <linux/mutex.h> 84#include <linux/mutex.h>
85#include <asm/uaccess.h> 85#include <linux/uaccess.h>
86#include <linux/usb.h> 86#include <linux/usb.h>
87#include <linux/usb/serial.h> 87#include <linux/usb/serial.h>
88#include <linux/firmware.h> 88#include <linux/firmware.h>
@@ -151,21 +151,22 @@ struct ti_device {
151static int ti_startup(struct usb_serial *serial); 151static int ti_startup(struct usb_serial *serial);
152static void ti_shutdown(struct usb_serial *serial); 152static void ti_shutdown(struct usb_serial *serial);
153static int ti_open(struct tty_struct *tty, struct usb_serial_port *port, 153static int ti_open(struct tty_struct *tty, struct usb_serial_port *port,
154 struct file *file); 154 struct file *file);
155static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, 155static void ti_close(struct tty_struct *tty, struct usb_serial_port *port,
156 struct file *file); 156 struct file *file);
157static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 157static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
158 const unsigned char *data, int count); 158 const unsigned char *data, int count);
159static int ti_write_room(struct tty_struct *tty); 159static int ti_write_room(struct tty_struct *tty);
160static int ti_chars_in_buffer(struct tty_struct *tty); 160static int ti_chars_in_buffer(struct tty_struct *tty);
161static void ti_throttle(struct tty_struct *tty); 161static void ti_throttle(struct tty_struct *tty);
162static void ti_unthrottle(struct tty_struct *tty); 162static void ti_unthrottle(struct tty_struct *tty);
163static int ti_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); 163static int ti_ioctl(struct tty_struct *tty, struct file *file,
164static void ti_set_termios(struct tty_struct *tty, struct usb_serial_port *port, 164 unsigned int cmd, unsigned long arg);
165 struct ktermios *old_termios); 165static void ti_set_termios(struct tty_struct *tty,
166 struct usb_serial_port *port, struct ktermios *old_termios);
166static int ti_tiocmget(struct tty_struct *tty, struct file *file); 167static int ti_tiocmget(struct tty_struct *tty, struct file *file);
167static int ti_tiocmset(struct tty_struct *tty, struct file *file, 168static int ti_tiocmset(struct tty_struct *tty, struct file *file,
168 unsigned int set, unsigned int clear); 169 unsigned int set, unsigned int clear);
169static void ti_break(struct tty_struct *tty, int break_state); 170static void ti_break(struct tty_struct *tty, int break_state);
170static void ti_interrupt_callback(struct urb *urb); 171static void ti_interrupt_callback(struct urb *urb);
171static void ti_bulk_in_callback(struct urb *urb); 172static void ti_bulk_in_callback(struct urb *urb);
@@ -327,19 +328,25 @@ module_param(debug, bool, S_IRUGO | S_IWUSR);
327MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes"); 328MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
328 329
329module_param(low_latency, bool, S_IRUGO | S_IWUSR); 330module_param(low_latency, bool, S_IRUGO | S_IWUSR);
330MODULE_PARM_DESC(low_latency, "TTY low_latency flag, 0=off, 1=on, default is off"); 331MODULE_PARM_DESC(low_latency,
332 "TTY low_latency flag, 0=off, 1=on, default is off");
331 333
332module_param(closing_wait, int, S_IRUGO | S_IWUSR); 334module_param(closing_wait, int, S_IRUGO | S_IWUSR);
333MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain in close, in .01 secs, default is 4000"); 335MODULE_PARM_DESC(closing_wait,
336 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
334 337
335module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); 338module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
336MODULE_PARM_DESC(vendor_3410, "Vendor ids for 3410 based devices, 1-5 short integers"); 339MODULE_PARM_DESC(vendor_3410,
340 "Vendor ids for 3410 based devices, 1-5 short integers");
337module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); 341module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
338MODULE_PARM_DESC(product_3410, "Product ids for 3410 based devices, 1-5 short integers"); 342MODULE_PARM_DESC(product_3410,
343 "Product ids for 3410 based devices, 1-5 short integers");
339module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); 344module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
340MODULE_PARM_DESC(vendor_5052, "Vendor ids for 5052 based devices, 1-5 short integers"); 345MODULE_PARM_DESC(vendor_5052,
346 "Vendor ids for 5052 based devices, 1-5 short integers");
341module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); 347module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
342MODULE_PARM_DESC(product_5052, "Product ids for 5052 based devices, 1-5 short integers"); 348MODULE_PARM_DESC(product_5052,
349 "Product ids for 5052 based devices, 1-5 short integers");
343 350
344MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 351MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
345 352
@@ -348,18 +355,18 @@ MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
348 355
349static int __init ti_init(void) 356static int __init ti_init(void)
350{ 357{
351 int i,j; 358 int i, j;
352 int ret; 359 int ret;
353 360
354 /* insert extra vendor and product ids */ 361 /* insert extra vendor and product ids */
355 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; 362 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
356 for (i=0; i<min(vendor_3410_count,product_3410_count); i++,j++) { 363 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++) {
357 ti_id_table_3410[j].idVendor = vendor_3410[i]; 364 ti_id_table_3410[j].idVendor = vendor_3410[i];
358 ti_id_table_3410[j].idProduct = product_3410[i]; 365 ti_id_table_3410[j].idProduct = product_3410[i];
359 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 366 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
360 } 367 }
361 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; 368 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
362 for (i=0; i<min(vendor_5052_count,product_5052_count); i++,j++) { 369 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++) {
363 ti_id_table_5052[j].idVendor = vendor_5052[i]; 370 ti_id_table_5052[j].idVendor = vendor_5052[i];
364 ti_id_table_5052[j].idProduct = product_5052[i]; 371 ti_id_table_5052[j].idProduct = product_5052[i];
365 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 372 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
@@ -428,7 +435,8 @@ static int ti_startup(struct usb_serial *serial)
428 /* determine device type */ 435 /* determine device type */
429 if (usb_match_id(serial->interface, ti_id_table_3410)) 436 if (usb_match_id(serial->interface, ti_id_table_3410))
430 tdev->td_is_3410 = 1; 437 tdev->td_is_3410 = 1;
431 dbg("%s - device type is %s", __func__, tdev->td_is_3410 ? "3410" : "5052"); 438 dbg("%s - device type is %s", __func__,
439 tdev->td_is_3410 ? "3410" : "5052");
432 440
433 /* if we have only 1 configuration, download firmware */ 441 /* if we have only 1 configuration, download firmware */
434 if (dev->descriptor.bNumConfigurations == 1) { 442 if (dev->descriptor.bNumConfigurations == 1) {
@@ -447,7 +455,7 @@ static int ti_startup(struct usb_serial *serial)
447 455
448 status = -ENODEV; 456 status = -ENODEV;
449 goto free_tdev; 457 goto free_tdev;
450 } 458 }
451 459
452 /* the second configuration must be set (in sysfs by hotplug script) */ 460 /* the second configuration must be set (in sysfs by hotplug script) */
453 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 461 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
@@ -464,7 +472,8 @@ static int ti_startup(struct usb_serial *serial)
464 goto free_tports; 472 goto free_tports;
465 } 473 }
466 spin_lock_init(&tport->tp_lock); 474 spin_lock_init(&tport->tp_lock);
467 tport->tp_uart_base_addr = (i == 0 ? TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); 475 tport->tp_uart_base_addr = (i == 0 ?
476 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
468 tport->tp_flags = low_latency ? ASYNC_LOW_LATENCY : 0; 477 tport->tp_flags = low_latency ? ASYNC_LOW_LATENCY : 0;
469 tport->tp_closing_wait = closing_wait; 478 tport->tp_closing_wait = closing_wait;
470 init_waitqueue_head(&tport->tp_msr_wait); 479 init_waitqueue_head(&tport->tp_msr_wait);
@@ -481,11 +490,11 @@ static int ti_startup(struct usb_serial *serial)
481 usb_set_serial_port_data(serial->port[i], tport); 490 usb_set_serial_port_data(serial->port[i], tport);
482 tport->tp_uart_mode = 0; /* default is RS232 */ 491 tport->tp_uart_mode = 0; /* default is RS232 */
483 } 492 }
484 493
485 return 0; 494 return 0;
486 495
487free_tports: 496free_tports:
488 for (--i; i>=0; --i) { 497 for (--i; i >= 0; --i) {
489 tport = usb_get_serial_port_data(serial->port[i]); 498 tport = usb_get_serial_port_data(serial->port[i]);
490 ti_buf_free(tport->tp_write_buf); 499 ti_buf_free(tport->tp_write_buf);
491 kfree(tport); 500 kfree(tport);
@@ -506,7 +515,7 @@ static void ti_shutdown(struct usb_serial *serial)
506 515
507 dbg("%s", __func__); 516 dbg("%s", __func__);
508 517
509 for (i=0; i < serial->num_ports; ++i) { 518 for (i = 0; i < serial->num_ports; ++i) {
510 tport = usb_get_serial_port_data(serial->port[i]); 519 tport = usb_get_serial_port_data(serial->port[i]);
511 if (tport) { 520 if (tport) {
512 ti_buf_free(tport->tp_write_buf); 521 ti_buf_free(tport->tp_write_buf);
@@ -529,8 +538,8 @@ static int ti_open(struct tty_struct *tty,
529 struct urb *urb; 538 struct urb *urb;
530 int port_number; 539 int port_number;
531 int status; 540 int status;
532 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS | 541 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
533 TI_PIPE_TIMEOUT_ENABLE | 542 TI_PIPE_TIMEOUT_ENABLE |
534 (TI_TRANSFER_TIMEOUT << 2)); 543 (TI_TRANSFER_TIMEOUT << 2));
535 544
536 dbg("%s - port %d", __func__, port->number); 545 dbg("%s - port %d", __func__, port->number);
@@ -561,7 +570,8 @@ static int ti_open(struct tty_struct *tty,
561 dbg("%s - start interrupt in urb", __func__); 570 dbg("%s - start interrupt in urb", __func__);
562 urb = tdev->td_serial->port[0]->interrupt_in_urb; 571 urb = tdev->td_serial->port[0]->interrupt_in_urb;
563 if (!urb) { 572 if (!urb) {
564 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 573 dev_err(&port->dev, "%s - no interrupt urb\n",
574 __func__);
565 status = -EINVAL; 575 status = -EINVAL;
566 goto release_lock; 576 goto release_lock;
567 } 577 }
@@ -570,7 +580,9 @@ static int ti_open(struct tty_struct *tty,
570 urb->dev = dev; 580 urb->dev = dev;
571 status = usb_submit_urb(urb, GFP_KERNEL); 581 status = usb_submit_urb(urb, GFP_KERNEL);
572 if (status) { 582 if (status) {
573 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 583 dev_err(&port->dev,
584 "%s - submit interrupt urb failed, %d\n",
585 __func__, status);
574 goto release_lock; 586 goto release_lock;
575 } 587 }
576 } 588 }
@@ -582,7 +594,8 @@ static int ti_open(struct tty_struct *tty,
582 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 594 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
583 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 595 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
584 if (status) { 596 if (status) {
585 dev_err(&port->dev, "%s - cannot send open command, %d\n", __func__, status); 597 dev_err(&port->dev, "%s - cannot send open command, %d\n",
598 __func__, status);
586 goto unlink_int_urb; 599 goto unlink_int_urb;
587 } 600 }
588 601
@@ -590,7 +603,8 @@ static int ti_open(struct tty_struct *tty,
590 status = ti_command_out_sync(tdev, TI_START_PORT, 603 status = ti_command_out_sync(tdev, TI_START_PORT,
591 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 604 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
592 if (status) { 605 if (status) {
593 dev_err(&port->dev, "%s - cannot send start command, %d\n", __func__, status); 606 dev_err(&port->dev, "%s - cannot send start command, %d\n",
607 __func__, status);
594 goto unlink_int_urb; 608 goto unlink_int_urb;
595 } 609 }
596 610
@@ -598,13 +612,15 @@ static int ti_open(struct tty_struct *tty,
598 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 612 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
599 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); 613 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
600 if (status) { 614 if (status) {
601 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", __func__, status); 615 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
616 __func__, status);
602 goto unlink_int_urb; 617 goto unlink_int_urb;
603 } 618 }
604 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 619 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
605 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); 620 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
606 if (status) { 621 if (status) {
607 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", __func__, status); 622 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
623 __func__, status);
608 goto unlink_int_urb; 624 goto unlink_int_urb;
609 } 625 }
610 626
@@ -620,7 +636,8 @@ static int ti_open(struct tty_struct *tty,
620 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 636 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
621 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 637 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
622 if (status) { 638 if (status) {
623 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", __func__, status); 639 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
640 __func__, status);
624 goto unlink_int_urb; 641 goto unlink_int_urb;
625 } 642 }
626 643
@@ -628,7 +645,8 @@ static int ti_open(struct tty_struct *tty,
628 status = ti_command_out_sync(tdev, TI_START_PORT, 645 status = ti_command_out_sync(tdev, TI_START_PORT,
629 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 646 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
630 if (status) { 647 if (status) {
631 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", __func__, status); 648 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
649 __func__, status);
632 goto unlink_int_urb; 650 goto unlink_int_urb;
633 } 651 }
634 652
@@ -646,7 +664,8 @@ static int ti_open(struct tty_struct *tty,
646 urb->dev = dev; 664 urb->dev = dev;
647 status = usb_submit_urb(urb, GFP_KERNEL); 665 status = usb_submit_urb(urb, GFP_KERNEL);
648 if (status) { 666 if (status) {
649 dev_err(&port->dev, "%s - submit read urb failed, %d\n", __func__, status); 667 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
668 __func__, status);
650 goto unlink_int_urb; 669 goto unlink_int_urb;
651 } 670 }
652 671
@@ -675,7 +694,7 @@ static void ti_close(struct tty_struct *tty, struct usb_serial_port *port,
675 int do_unlock; 694 int do_unlock;
676 695
677 dbg("%s - port %d", __func__, port->number); 696 dbg("%s - port %d", __func__, port->number);
678 697
679 tdev = usb_get_serial_data(port->serial); 698 tdev = usb_get_serial_data(port->serial);
680 tport = usb_get_serial_port_data(port); 699 tport = usb_get_serial_port_data(port);
681 if (tdev == NULL || tport == NULL) 700 if (tdev == NULL || tport == NULL)
@@ -695,7 +714,9 @@ static void ti_close(struct tty_struct *tty, struct usb_serial_port *port,
695 status = ti_command_out_sync(tdev, TI_CLOSE_PORT, 714 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
696 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 715 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
697 if (status) 716 if (status)
698 dev_err(&port->dev, "%s - cannot send close port command, %d\n" , __func__, status); 717 dev_err(&port->dev,
718 "%s - cannot send close port command, %d\n"
719 , __func__, status);
699 720
700 /* if mutex_lock is interrupted, continue anyway */ 721 /* if mutex_lock is interrupted, continue anyway */
701 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); 722 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
@@ -749,7 +770,7 @@ static int ti_write_room(struct tty_struct *tty)
749 770
750 if (tport == NULL) 771 if (tport == NULL)
751 return -ENODEV; 772 return -ENODEV;
752 773
753 spin_lock_irqsave(&tport->tp_lock, flags); 774 spin_lock_irqsave(&tport->tp_lock, flags);
754 room = ti_buf_space_avail(tport->tp_write_buf); 775 room = ti_buf_space_avail(tport->tp_write_buf);
755 spin_unlock_irqrestore(&tport->tp_lock, flags); 776 spin_unlock_irqrestore(&tport->tp_lock, flags);
@@ -810,7 +831,8 @@ static void ti_unthrottle(struct tty_struct *tty)
810 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 831 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
811 status = ti_restart_read(tport, tty); 832 status = ti_restart_read(tport, tty);
812 if (status) 833 if (status)
813 dev_err(&port->dev, "%s - cannot restart read, %d\n", __func__, status); 834 dev_err(&port->dev, "%s - cannot restart read, %d\n",
835 __func__, status);
814 } 836 }
815} 837}
816 838
@@ -829,44 +851,42 @@ static int ti_ioctl(struct tty_struct *tty, struct file *file,
829 return -ENODEV; 851 return -ENODEV;
830 852
831 switch (cmd) { 853 switch (cmd) {
832 case TIOCGSERIAL: 854 case TIOCGSERIAL:
833 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); 855 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
834 return ti_get_serial_info(tport, (struct serial_struct __user *)arg); 856 return ti_get_serial_info(tport,
835 break; 857 (struct serial_struct __user *)arg);
836 858 case TIOCSSERIAL:
837 case TIOCSSERIAL: 859 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
838 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); 860 return ti_set_serial_info(tport,
839 return ti_set_serial_info(tport, (struct serial_struct __user *)arg); 861 (struct serial_struct __user *)arg);
840 break; 862 case TIOCMIWAIT:
841 863 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
842 case TIOCMIWAIT: 864 cprev = tport->tp_icount;
843 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); 865 while (1) {
844 cprev = tport->tp_icount; 866 interruptible_sleep_on(&tport->tp_msr_wait);
845 while (1) { 867 if (signal_pending(current))
846 interruptible_sleep_on(&tport->tp_msr_wait); 868 return -ERESTARTSYS;
847 if (signal_pending(current)) 869 cnow = tport->tp_icount;
848 return -ERESTARTSYS; 870 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
849 cnow = tport->tp_icount; 871 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
850 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 872 return -EIO; /* no change => error */
851 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 873 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
852 return -EIO; /* no change => error */ 874 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
853 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 875 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
854 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 876 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
855 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 877 return 0;
856 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { 878 cprev = cnow;
857 return 0; 879 }
858 } 880 break;
859 cprev = cnow; 881 case TIOCGICOUNT:
860 } 882 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
861 break; 883 __func__, port->number,
862 884 tport->tp_icount.rx, tport->tp_icount.tx);
863 case TIOCGICOUNT: 885 if (copy_to_user((void __user *)arg, &tport->tp_icount,
864 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, port->number, tport->tp_icount.rx, tport->tp_icount.tx); 886 sizeof(tport->tp_icount)))
865 if (copy_to_user((void __user *)arg, &tport->tp_icount, sizeof(tport->tp_icount))) 887 return -EFAULT;
866 return -EFAULT; 888 return 0;
867 return 0;
868 } 889 }
869
870 return -ENOIOCTLCMD; 890 return -ENOIOCTLCMD;
871} 891}
872 892
@@ -876,7 +896,7 @@ static void ti_set_termios(struct tty_struct *tty,
876{ 896{
877 struct ti_port *tport = usb_get_serial_port_data(port); 897 struct ti_port *tport = usb_get_serial_port_data(port);
878 struct ti_uart_config *config; 898 struct ti_uart_config *config;
879 tcflag_t cflag,iflag; 899 tcflag_t cflag, iflag;
880 int baud; 900 int baud;
881 int status; 901 int status;
882 int port_number = port->number - port->serial->minor; 902 int port_number = port->number - port->serial->minor;
@@ -888,7 +908,8 @@ static void ti_set_termios(struct tty_struct *tty,
888 iflag = tty->termios->c_iflag; 908 iflag = tty->termios->c_iflag;
889 909
890 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag); 910 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
891 dbg("%s - old clfag %08x, old iflag %08x", __func__, old_termios->c_cflag, old_termios->c_iflag); 911 dbg("%s - old clfag %08x, old iflag %08x", __func__,
912 old_termios->c_cflag, old_termios->c_iflag);
892 913
893 if (tport == NULL) 914 if (tport == NULL)
894 return; 915 return;
@@ -907,19 +928,19 @@ static void ti_set_termios(struct tty_struct *tty,
907 config->bUartMode = (__u8)(tport->tp_uart_mode); 928 config->bUartMode = (__u8)(tport->tp_uart_mode);
908 929
909 switch (cflag & CSIZE) { 930 switch (cflag & CSIZE) {
910 case CS5: 931 case CS5:
911 config->bDataBits = TI_UART_5_DATA_BITS; 932 config->bDataBits = TI_UART_5_DATA_BITS;
912 break; 933 break;
913 case CS6: 934 case CS6:
914 config->bDataBits = TI_UART_6_DATA_BITS; 935 config->bDataBits = TI_UART_6_DATA_BITS;
915 break; 936 break;
916 case CS7: 937 case CS7:
917 config->bDataBits = TI_UART_7_DATA_BITS; 938 config->bDataBits = TI_UART_7_DATA_BITS;
918 break; 939 break;
919 default: 940 default:
920 case CS8: 941 case CS8:
921 config->bDataBits = TI_UART_8_DATA_BITS; 942 config->bDataBits = TI_UART_8_DATA_BITS;
922 break; 943 break;
923 } 944 }
924 945
925 /* CMSPAR isn't supported by this driver */ 946 /* CMSPAR isn't supported by this driver */
@@ -935,7 +956,7 @@ static void ti_set_termios(struct tty_struct *tty,
935 } 956 }
936 } else { 957 } else {
937 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING; 958 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
938 config->bParity = TI_UART_NO_PARITY; 959 config->bParity = TI_UART_NO_PARITY;
939 } 960 }
940 961
941 if (cflag & CSTOPB) 962 if (cflag & CSTOPB)
@@ -988,7 +1009,8 @@ static void ti_set_termios(struct tty_struct *tty,
988 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1009 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
989 sizeof(*config)); 1010 sizeof(*config));
990 if (status) 1011 if (status)
991 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", __func__, port_number, status); 1012 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1013 __func__, port_number, status);
992 1014
993 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1015 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
994 mcr = tport->tp_shadow_mcr; 1016 mcr = tport->tp_shadow_mcr;
@@ -997,7 +1019,9 @@ static void ti_set_termios(struct tty_struct *tty,
997 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1019 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
998 status = ti_set_mcr(tport, mcr); 1020 status = ti_set_mcr(tport, mcr);
999 if (status) 1021 if (status)
1000 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", __func__, port_number, status); 1022 dev_err(&port->dev,
1023 "%s - cannot set modem control on port %d, %d\n",
1024 __func__, port_number, status);
1001 1025
1002 kfree(config); 1026 kfree(config);
1003} 1027}
@@ -1139,10 +1163,12 @@ static void ti_interrupt_callback(struct urb *urb)
1139 port_number = TI_GET_PORT_FROM_CODE(data[0]); 1163 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1140 function = TI_GET_FUNC_FROM_CODE(data[0]); 1164 function = TI_GET_FUNC_FROM_CODE(data[0]);
1141 1165
1142 dbg("%s - port_number %d, function %d, data 0x%02X", __func__, port_number, function, data[1]); 1166 dbg("%s - port_number %d, function %d, data 0x%02X",
1167 __func__, port_number, function, data[1]);
1143 1168
1144 if (port_number >= serial->num_ports) { 1169 if (port_number >= serial->num_ports) {
1145 dev_err(dev, "%s - bad port number, %d\n", __func__, port_number); 1170 dev_err(dev, "%s - bad port number, %d\n",
1171 __func__, port_number);
1146 goto exit; 1172 goto exit;
1147 } 1173 }
1148 1174
@@ -1154,7 +1180,8 @@ static void ti_interrupt_callback(struct urb *urb)
1154 1180
1155 switch (function) { 1181 switch (function) {
1156 case TI_CODE_DATA_ERROR: 1182 case TI_CODE_DATA_ERROR:
1157 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", __func__, port_number, data[1]); 1183 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1184 __func__, port_number, data[1]);
1158 break; 1185 break;
1159 1186
1160 case TI_CODE_MODEM_STATUS: 1187 case TI_CODE_MODEM_STATUS:
@@ -1164,7 +1191,8 @@ static void ti_interrupt_callback(struct urb *urb)
1164 break; 1191 break;
1165 1192
1166 default: 1193 default:
1167 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", __func__, data[1]); 1194 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1195 __func__, data[1]);
1168 break; 1196 break;
1169 } 1197 }
1170 1198
@@ -1198,7 +1226,7 @@ static void ti_bulk_in_callback(struct urb *urb)
1198 return; 1226 return;
1199 default: 1227 default:
1200 dev_err(dev, "%s - nonzero urb status, %d\n", 1228 dev_err(dev, "%s - nonzero urb status, %d\n",
1201 __func__, status ); 1229 __func__, status);
1202 tport->tp_tdev->td_urb_error = 1; 1230 tport->tp_tdev->td_urb_error = 1;
1203 wake_up_interruptible(&tport->tp_write_wait); 1231 wake_up_interruptible(&tport->tp_write_wait);
1204 } 1232 }
@@ -1218,8 +1246,9 @@ static void ti_bulk_in_callback(struct urb *urb)
1218 if (!tport->tp_is_open) 1246 if (!tport->tp_is_open)
1219 dbg("%s - port closed, dropping data", __func__); 1247 dbg("%s - port closed, dropping data", __func__);
1220 else 1248 else
1221 ti_recv(&urb->dev->dev, port->port.tty, urb->transfer_buffer, 1249 ti_recv(&urb->dev->dev, port->port.tty,
1222 urb->actual_length); 1250 urb->transfer_buffer,
1251 urb->actual_length);
1223 1252
1224 spin_lock(&tport->tp_lock); 1253 spin_lock(&tport->tp_lock);
1225 tport->tp_icount.rx += urb->actual_length; 1254 tport->tp_icount.rx += urb->actual_length;
@@ -1283,8 +1312,9 @@ static void ti_recv(struct device *dev, struct tty_struct *tty,
1283 do { 1312 do {
1284 cnt = tty_buffer_request_room(tty, length); 1313 cnt = tty_buffer_request_room(tty, length);
1285 if (cnt < length) { 1314 if (cnt < length) {
1286 dev_err(dev, "%s - dropping data, %d bytes lost\n", __func__, length - cnt); 1315 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1287 if(cnt == 0) 1316 __func__, length - cnt);
1317 if (cnt == 0)
1288 break; 1318 break;
1289 } 1319 }
1290 tty_insert_flip_string(tty, data, cnt); 1320 tty_insert_flip_string(tty, data, cnt);
@@ -1326,7 +1356,8 @@ static void ti_send(struct ti_port *tport)
1326 1356
1327 spin_unlock_irqrestore(&tport->tp_lock, flags); 1357 spin_unlock_irqrestore(&tport->tp_lock, flags);
1328 1358
1329 usb_serial_debug_data(debug, &port->dev, __func__, count, port->write_urb->transfer_buffer); 1359 usb_serial_debug_data(debug, &port->dev, __func__, count,
1360 port->write_urb->transfer_buffer);
1330 1361
1331 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1362 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1332 usb_sndbulkpipe(port->serial->dev, 1363 usb_sndbulkpipe(port->serial->dev,
@@ -1336,8 +1367,9 @@ static void ti_send(struct ti_port *tport)
1336 1367
1337 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1368 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1338 if (result) { 1369 if (result) {
1339 dev_err(&port->dev, "%s - submit write urb failed, %d\n", __func__, result); 1370 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1340 tport->tp_write_urb_in_use = 0; 1371 __func__, result);
1372 tport->tp_write_urb_in_use = 0;
1341 /* TODO: reschedule ti_send */ 1373 /* TODO: reschedule ti_send */
1342 } else { 1374 } else {
1343 spin_lock_irqsave(&tport->tp_lock, flags); 1375 spin_lock_irqsave(&tport->tp_lock, flags);
@@ -1372,7 +1404,7 @@ static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1372 1404
1373static int ti_get_lsr(struct ti_port *tport) 1405static int ti_get_lsr(struct ti_port *tport)
1374{ 1406{
1375 int size,status; 1407 int size, status;
1376 struct ti_device *tdev = tport->tp_tdev; 1408 struct ti_device *tdev = tport->tp_tdev;
1377 struct usb_serial_port *port = tport->tp_port; 1409 struct usb_serial_port *port = tport->tp_port;
1378 int port_number = port->number - port->serial->minor; 1410 int port_number = port->number - port->serial->minor;
@@ -1390,7 +1422,9 @@ static int ti_get_lsr(struct ti_port *tport)
1390 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1422 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1391 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1423 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1392 if (status) { 1424 if (status) {
1393 dev_err(&port->dev, "%s - get port status command failed, %d\n", __func__, status); 1425 dev_err(&port->dev,
1426 "%s - get port status command failed, %d\n",
1427 __func__, status);
1394 goto free_data; 1428 goto free_data;
1395 } 1429 }
1396 1430
@@ -1626,7 +1660,8 @@ static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1626 struct ti_write_data_bytes *data; 1660 struct ti_write_data_bytes *data;
1627 struct device *dev = &tdev->td_serial->dev->dev; 1661 struct device *dev = &tdev->td_serial->dev->dev;
1628 1662
1629 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X", __func__, addr, mask, byte); 1663 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1664 __func__, addr, mask, byte);
1630 1665
1631 size = sizeof(struct ti_write_data_bytes) + 2; 1666 size = sizeof(struct ti_write_data_bytes) + 2;
1632 data = kmalloc(size, GFP_KERNEL); 1667 data = kmalloc(size, GFP_KERNEL);
@@ -1663,12 +1698,12 @@ static int ti_do_download(struct usb_device *dev, int pipe,
1663 struct ti_firmware_header *header; 1698 struct ti_firmware_header *header;
1664 int status; 1699 int status;
1665 int len; 1700 int len;
1666 1701
1667 for(pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1702 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1668 cs = (__u8)(cs + buffer[pos]); 1703 cs = (__u8)(cs + buffer[pos]);
1669 1704
1670 header = (struct ti_firmware_header *)buffer; 1705 header = (struct ti_firmware_header *)buffer;
1671 header->wLength = cpu_to_le16((__u16)(size 1706 header->wLength = cpu_to_le16((__u16)(size
1672 - sizeof(struct ti_firmware_header))); 1707 - sizeof(struct ti_firmware_header)));
1673 header->bCheckSum = cs; 1708 header->bCheckSum = cs;
1674 1709
@@ -1714,7 +1749,8 @@ static int ti_download_firmware(struct ti_device *tdev, int type)
1714 } 1749 }
1715 release_firmware(fw_p); 1750 release_firmware(fw_p);
1716 if (status) { 1751 if (status) {
1717 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", __func__, status); 1752 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1753 __func__, status);
1718 return status; 1754 return status;
1719 } 1755 }
1720 1756
@@ -1786,7 +1822,7 @@ static void ti_buf_clear(struct circ_buf *cb)
1786 1822
1787static int ti_buf_data_avail(struct circ_buf *cb) 1823static int ti_buf_data_avail(struct circ_buf *cb)
1788{ 1824{
1789 return CIRC_CNT(cb->head,cb->tail,TI_WRITE_BUF_SIZE); 1825 return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1790} 1826}
1791 1827
1792 1828
@@ -1799,7 +1835,7 @@ static int ti_buf_data_avail(struct circ_buf *cb)
1799 1835
1800static int ti_buf_space_avail(struct circ_buf *cb) 1836static int ti_buf_space_avail(struct circ_buf *cb)
1801{ 1837{
1802 return CIRC_SPACE(cb->head,cb->tail,TI_WRITE_BUF_SIZE); 1838 return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE);
1803} 1839}
1804 1840
1805 1841