3 * TI 3410/5052 USB Serial Driver
5 * Copyright (C) 2004 Texas Instruments
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>.
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/firmware.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/tty.h>
27 #include <linux/tty_driver.h>
28 #include <linux/tty_flip.h>
29 #include <linux/module.h>
30 #include <linux/spinlock.h>
31 #include <linux/ioctl.h>
32 #include <linux/serial.h>
33 #include <linux/kfifo.h>
34 #include <linux/mutex.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
39 #include "ti_usb_3410_5052.h"
43 #define TI_DRIVER_VERSION "v0.10"
44 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
45 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
47 #define TI_FIRMWARE_BUF_SIZE 16284
49 #define TI_WRITE_BUF_SIZE 1024
51 #define TI_TRANSFER_TIMEOUT 2
53 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
55 /* supported setserial flags */
56 #define TI_SET_SERIAL_FLAGS 0
59 #define TI_READ_URB_RUNNING 0
60 #define TI_READ_URB_STOPPING 1
61 #define TI_READ_URB_STOPPED 2
63 #define TI_EXTRA_VID_PID_COUNT 5
73 __u8 tp_uart_mode
; /* 232 or 485 modes */
74 unsigned int tp_uart_base_addr
;
76 int tp_closing_wait
;/* in .01 secs */
77 struct async_icount tp_icount
;
78 wait_queue_head_t tp_msr_wait
; /* wait for msr change */
79 wait_queue_head_t tp_write_wait
;
80 struct ti_device
*tp_tdev
;
81 struct usb_serial_port
*tp_port
;
83 int tp_read_urb_state
;
84 int tp_write_urb_in_use
;
85 struct kfifo write_fifo
;
89 struct mutex td_open_close_lock
;
90 int td_open_port_count
;
91 struct usb_serial
*td_serial
;
97 /* Function Declarations */
99 static int ti_startup(struct usb_serial
*serial
);
100 static void ti_release(struct usb_serial
*serial
);
101 static int ti_open(struct tty_struct
*tty
, struct usb_serial_port
*port
);
102 static void ti_close(struct usb_serial_port
*port
);
103 static int ti_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
104 const unsigned char *data
, int count
);
105 static int ti_write_room(struct tty_struct
*tty
);
106 static int ti_chars_in_buffer(struct tty_struct
*tty
);
107 static void ti_throttle(struct tty_struct
*tty
);
108 static void ti_unthrottle(struct tty_struct
*tty
);
109 static int ti_ioctl(struct tty_struct
*tty
, struct file
*file
,
110 unsigned int cmd
, unsigned long arg
);
111 static void ti_set_termios(struct tty_struct
*tty
,
112 struct usb_serial_port
*port
, struct ktermios
*old_termios
);
113 static int ti_tiocmget(struct tty_struct
*tty
, struct file
*file
);
114 static int ti_tiocmset(struct tty_struct
*tty
, struct file
*file
,
115 unsigned int set
, unsigned int clear
);
116 static void ti_break(struct tty_struct
*tty
, int break_state
);
117 static void ti_interrupt_callback(struct urb
*urb
);
118 static void ti_bulk_in_callback(struct urb
*urb
);
119 static void ti_bulk_out_callback(struct urb
*urb
);
121 static void ti_recv(struct device
*dev
, struct tty_struct
*tty
,
122 unsigned char *data
, int length
);
123 static void ti_send(struct ti_port
*tport
);
124 static int ti_set_mcr(struct ti_port
*tport
, unsigned int mcr
);
125 static int ti_get_lsr(struct ti_port
*tport
);
126 static int ti_get_serial_info(struct ti_port
*tport
,
127 struct serial_struct __user
*ret_arg
);
128 static int ti_set_serial_info(struct tty_struct
*tty
, struct ti_port
*tport
,
129 struct serial_struct __user
*new_arg
);
130 static void ti_handle_new_msr(struct ti_port
*tport
, __u8 msr
);
132 static void ti_drain(struct ti_port
*tport
, unsigned long timeout
, int flush
);
134 static void ti_stop_read(struct ti_port
*tport
, struct tty_struct
*tty
);
135 static int ti_restart_read(struct ti_port
*tport
, struct tty_struct
*tty
);
137 static int ti_command_out_sync(struct ti_device
*tdev
, __u8 command
,
138 __u16 moduleid
, __u16 value
, __u8
*data
, int size
);
139 static int ti_command_in_sync(struct ti_device
*tdev
, __u8 command
,
140 __u16 moduleid
, __u16 value
, __u8
*data
, int size
);
142 static int ti_write_byte(struct ti_device
*tdev
, unsigned long addr
,
143 __u8 mask
, __u8 byte
);
145 static int ti_download_firmware(struct ti_device
*tdev
);
150 /* module parameters */
152 static int closing_wait
= TI_DEFAULT_CLOSING_WAIT
;
153 static ushort vendor_3410
[TI_EXTRA_VID_PID_COUNT
];
154 static unsigned int vendor_3410_count
;
155 static ushort product_3410
[TI_EXTRA_VID_PID_COUNT
];
156 static unsigned int product_3410_count
;
157 static ushort vendor_5052
[TI_EXTRA_VID_PID_COUNT
];
158 static unsigned int vendor_5052_count
;
159 static ushort product_5052
[TI_EXTRA_VID_PID_COUNT
];
160 static unsigned int product_5052_count
;
162 /* supported devices */
163 /* the array dimension is the number of default entries plus */
164 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
166 static struct usb_device_id ti_id_table_3410
[13+TI_EXTRA_VID_PID_COUNT
+1] = {
167 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_PRODUCT_ID
) },
168 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_EZ430_ID
) },
169 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_NO_FW_PRODUCT_ID
) },
170 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_NO_FW_PRODUCT_ID
) },
171 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_PRODUCT_ID
) },
172 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_PRODUCT_ID
) },
173 { USB_DEVICE(MTS_VENDOR_ID
, MTS_EDGE_PRODUCT_ID
) },
174 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234MU_PRODUCT_ID
) },
175 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBA_PRODUCT_ID
) },
176 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBAOLD_PRODUCT_ID
) },
177 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
178 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454B_PRODUCT_ID
) },
179 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454C_PRODUCT_ID
) },
182 static struct usb_device_id ti_id_table_5052
[5+TI_EXTRA_VID_PID_COUNT
+1] = {
183 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_BOOT_PRODUCT_ID
) },
184 { USB_DEVICE(TI_VENDOR_ID
, TI_5152_BOOT_PRODUCT_ID
) },
185 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_EEPROM_PRODUCT_ID
) },
186 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_FIRMWARE_PRODUCT_ID
) },
189 static struct usb_device_id ti_id_table_combined
[17+2*TI_EXTRA_VID_PID_COUNT
+1] = {
190 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_PRODUCT_ID
) },
191 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_EZ430_ID
) },
192 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_NO_FW_PRODUCT_ID
) },
193 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_NO_FW_PRODUCT_ID
) },
194 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_PRODUCT_ID
) },
195 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_PRODUCT_ID
) },
196 { USB_DEVICE(MTS_VENDOR_ID
, MTS_EDGE_PRODUCT_ID
) },
197 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234MU_PRODUCT_ID
) },
198 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBA_PRODUCT_ID
) },
199 { USB_DEVICE(MTS_VENDOR_ID
, MTS_MT9234ZBAOLD_PRODUCT_ID
) },
200 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_BOOT_PRODUCT_ID
) },
201 { USB_DEVICE(TI_VENDOR_ID
, TI_5152_BOOT_PRODUCT_ID
) },
202 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_EEPROM_PRODUCT_ID
) },
203 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_FIRMWARE_PRODUCT_ID
) },
204 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
205 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454B_PRODUCT_ID
) },
206 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454C_PRODUCT_ID
) },
210 static struct usb_driver ti_usb_driver
= {
211 .name
= "ti_usb_3410_5052",
212 .probe
= usb_serial_probe
,
213 .disconnect
= usb_serial_disconnect
,
214 .id_table
= ti_id_table_combined
,
218 static struct usb_serial_driver ti_1port_device
= {
220 .owner
= THIS_MODULE
,
221 .name
= "ti_usb_3410_5052_1",
223 .description
= "TI USB 3410 1 port adapter",
224 .usb_driver
= &ti_usb_driver
,
225 .id_table
= ti_id_table_3410
,
227 .attach
= ti_startup
,
228 .release
= ti_release
,
232 .write_room
= ti_write_room
,
233 .chars_in_buffer
= ti_chars_in_buffer
,
234 .throttle
= ti_throttle
,
235 .unthrottle
= ti_unthrottle
,
237 .set_termios
= ti_set_termios
,
238 .tiocmget
= ti_tiocmget
,
239 .tiocmset
= ti_tiocmset
,
240 .break_ctl
= ti_break
,
241 .read_int_callback
= ti_interrupt_callback
,
242 .read_bulk_callback
= ti_bulk_in_callback
,
243 .write_bulk_callback
= ti_bulk_out_callback
,
246 static struct usb_serial_driver ti_2port_device
= {
248 .owner
= THIS_MODULE
,
249 .name
= "ti_usb_3410_5052_2",
251 .description
= "TI USB 5052 2 port adapter",
252 .usb_driver
= &ti_usb_driver
,
253 .id_table
= ti_id_table_5052
,
255 .attach
= ti_startup
,
256 .release
= ti_release
,
260 .write_room
= ti_write_room
,
261 .chars_in_buffer
= ti_chars_in_buffer
,
262 .throttle
= ti_throttle
,
263 .unthrottle
= ti_unthrottle
,
265 .set_termios
= ti_set_termios
,
266 .tiocmget
= ti_tiocmget
,
267 .tiocmset
= ti_tiocmset
,
268 .break_ctl
= ti_break
,
269 .read_int_callback
= ti_interrupt_callback
,
270 .read_bulk_callback
= ti_bulk_in_callback
,
271 .write_bulk_callback
= ti_bulk_out_callback
,
277 MODULE_AUTHOR(TI_DRIVER_AUTHOR
);
278 MODULE_DESCRIPTION(TI_DRIVER_DESC
);
279 MODULE_VERSION(TI_DRIVER_VERSION
);
280 MODULE_LICENSE("GPL");
282 MODULE_FIRMWARE("ti_3410.fw");
283 MODULE_FIRMWARE("ti_5052.fw");
284 MODULE_FIRMWARE("mts_cdma.fw");
285 MODULE_FIRMWARE("mts_gsm.fw");
286 MODULE_FIRMWARE("mts_edge.fw");
287 MODULE_FIRMWARE("mts_mt9234mu.fw");
288 MODULE_FIRMWARE("mts_mt9234zba.fw");
290 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
291 MODULE_PARM_DESC(debug
, "Enable debugging, 0=no, 1=yes");
293 module_param(closing_wait
, int, S_IRUGO
| S_IWUSR
);
294 MODULE_PARM_DESC(closing_wait
,
295 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
297 module_param_array(vendor_3410
, ushort
, &vendor_3410_count
, S_IRUGO
);
298 MODULE_PARM_DESC(vendor_3410
,
299 "Vendor ids for 3410 based devices, 1-5 short integers");
300 module_param_array(product_3410
, ushort
, &product_3410_count
, S_IRUGO
);
301 MODULE_PARM_DESC(product_3410
,
302 "Product ids for 3410 based devices, 1-5 short integers");
303 module_param_array(vendor_5052
, ushort
, &vendor_5052_count
, S_IRUGO
);
304 MODULE_PARM_DESC(vendor_5052
,
305 "Vendor ids for 5052 based devices, 1-5 short integers");
306 module_param_array(product_5052
, ushort
, &product_5052_count
, S_IRUGO
);
307 MODULE_PARM_DESC(product_5052
,
308 "Product ids for 5052 based devices, 1-5 short integers");
310 MODULE_DEVICE_TABLE(usb
, ti_id_table_combined
);
315 static int __init
ti_init(void)
320 /* insert extra vendor and product ids */
321 c
= ARRAY_SIZE(ti_id_table_combined
) - 2 * TI_EXTRA_VID_PID_COUNT
- 1;
322 j
= ARRAY_SIZE(ti_id_table_3410
) - TI_EXTRA_VID_PID_COUNT
- 1;
323 for (i
= 0; i
< min(vendor_3410_count
, product_3410_count
); i
++, j
++, c
++) {
324 ti_id_table_3410
[j
].idVendor
= vendor_3410
[i
];
325 ti_id_table_3410
[j
].idProduct
= product_3410
[i
];
326 ti_id_table_3410
[j
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
327 ti_id_table_combined
[c
].idVendor
= vendor_3410
[i
];
328 ti_id_table_combined
[c
].idProduct
= product_3410
[i
];
329 ti_id_table_combined
[c
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
331 j
= ARRAY_SIZE(ti_id_table_5052
) - TI_EXTRA_VID_PID_COUNT
- 1;
332 for (i
= 0; i
< min(vendor_5052_count
, product_5052_count
); i
++, j
++, c
++) {
333 ti_id_table_5052
[j
].idVendor
= vendor_5052
[i
];
334 ti_id_table_5052
[j
].idProduct
= product_5052
[i
];
335 ti_id_table_5052
[j
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
336 ti_id_table_combined
[c
].idVendor
= vendor_5052
[i
];
337 ti_id_table_combined
[c
].idProduct
= product_5052
[i
];
338 ti_id_table_combined
[c
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
341 ret
= usb_serial_register(&ti_1port_device
);
344 ret
= usb_serial_register(&ti_2port_device
);
348 ret
= usb_register(&ti_usb_driver
);
352 printk(KERN_INFO KBUILD_MODNAME
": " TI_DRIVER_VERSION
":"
353 TI_DRIVER_DESC
"\n");
358 usb_serial_deregister(&ti_2port_device
);
360 usb_serial_deregister(&ti_1port_device
);
366 static void __exit
ti_exit(void)
368 usb_serial_deregister(&ti_1port_device
);
369 usb_serial_deregister(&ti_2port_device
);
370 usb_deregister(&ti_usb_driver
);
374 module_init(ti_init
);
375 module_exit(ti_exit
);
378 static int ti_startup(struct usb_serial
*serial
)
380 struct ti_device
*tdev
;
381 struct ti_port
*tport
;
382 struct usb_device
*dev
= serial
->dev
;
387 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
388 __func__
, le16_to_cpu(dev
->descriptor
.idProduct
),
389 dev
->descriptor
.bNumConfigurations
,
390 dev
->actconfig
->desc
.bConfigurationValue
);
392 /* create device structure */
393 tdev
= kzalloc(sizeof(struct ti_device
), GFP_KERNEL
);
395 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
398 mutex_init(&tdev
->td_open_close_lock
);
399 tdev
->td_serial
= serial
;
400 usb_set_serial_data(serial
, tdev
);
402 /* determine device type */
403 if (usb_match_id(serial
->interface
, ti_id_table_3410
))
404 tdev
->td_is_3410
= 1;
405 dbg("%s - device type is %s", __func__
,
406 tdev
->td_is_3410
? "3410" : "5052");
408 /* if we have only 1 configuration, download firmware */
409 if (dev
->descriptor
.bNumConfigurations
== 1) {
410 if ((status
= ti_download_firmware(tdev
)) != 0)
413 /* 3410 must be reset, 5052 resets itself */
414 if (tdev
->td_is_3410
) {
415 msleep_interruptible(100);
416 usb_reset_device(dev
);
423 /* the second configuration must be set */
424 if (dev
->actconfig
->desc
.bConfigurationValue
== TI_BOOT_CONFIG
) {
425 status
= usb_driver_set_configuration(dev
, TI_ACTIVE_CONFIG
);
426 status
= status
? status
: -ENODEV
;
430 /* set up port structures */
431 for (i
= 0; i
< serial
->num_ports
; ++i
) {
432 tport
= kzalloc(sizeof(struct ti_port
), GFP_KERNEL
);
434 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
438 spin_lock_init(&tport
->tp_lock
);
439 tport
->tp_uart_base_addr
= (i
== 0 ?
440 TI_UART1_BASE_ADDR
: TI_UART2_BASE_ADDR
);
441 tport
->tp_closing_wait
= closing_wait
;
442 init_waitqueue_head(&tport
->tp_msr_wait
);
443 init_waitqueue_head(&tport
->tp_write_wait
);
444 if (kfifo_alloc(&tport
->write_fifo
, TI_WRITE_BUF_SIZE
,
446 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
451 tport
->tp_port
= serial
->port
[i
];
452 tport
->tp_tdev
= tdev
;
453 usb_set_serial_port_data(serial
->port
[i
], tport
);
454 tport
->tp_uart_mode
= 0; /* default is RS232 */
460 for (--i
; i
>= 0; --i
) {
461 tport
= usb_get_serial_port_data(serial
->port
[i
]);
462 kfifo_free(&tport
->write_fifo
);
464 usb_set_serial_port_data(serial
->port
[i
], NULL
);
468 usb_set_serial_data(serial
, NULL
);
473 static void ti_release(struct usb_serial
*serial
)
476 struct ti_device
*tdev
= usb_get_serial_data(serial
);
477 struct ti_port
*tport
;
481 for (i
= 0; i
< serial
->num_ports
; ++i
) {
482 tport
= usb_get_serial_port_data(serial
->port
[i
]);
484 kfifo_free(&tport
->write_fifo
);
493 static int ti_open(struct tty_struct
*tty
, struct usb_serial_port
*port
)
495 struct ti_port
*tport
= usb_get_serial_port_data(port
);
496 struct ti_device
*tdev
;
497 struct usb_device
*dev
;
501 __u16 open_settings
= (__u8
)(TI_PIPE_MODE_CONTINOUS
|
502 TI_PIPE_TIMEOUT_ENABLE
|
503 (TI_TRANSFER_TIMEOUT
<< 2));
505 dbg("%s - port %d", __func__
, port
->number
);
510 dev
= port
->serial
->dev
;
511 tdev
= tport
->tp_tdev
;
513 /* only one open on any port on a device at a time */
514 if (mutex_lock_interruptible(&tdev
->td_open_close_lock
))
517 port_number
= port
->number
- port
->serial
->minor
;
519 memset(&(tport
->tp_icount
), 0x00, sizeof(tport
->tp_icount
));
522 tport
->tp_shadow_mcr
|= (TI_MCR_RTS
| TI_MCR_DTR
);
524 /* start interrupt urb the first time a port is opened on this device */
525 if (tdev
->td_open_port_count
== 0) {
526 dbg("%s - start interrupt in urb", __func__
);
527 urb
= tdev
->td_serial
->port
[0]->interrupt_in_urb
;
529 dev_err(&port
->dev
, "%s - no interrupt urb\n",
534 urb
->complete
= ti_interrupt_callback
;
537 status
= usb_submit_urb(urb
, GFP_KERNEL
);
540 "%s - submit interrupt urb failed, %d\n",
547 ti_set_termios(tty
, port
, tty
->termios
);
549 dbg("%s - sending TI_OPEN_PORT", __func__
);
550 status
= ti_command_out_sync(tdev
, TI_OPEN_PORT
,
551 (__u8
)(TI_UART1_PORT
+ port_number
), open_settings
, NULL
, 0);
553 dev_err(&port
->dev
, "%s - cannot send open command, %d\n",
558 dbg("%s - sending TI_START_PORT", __func__
);
559 status
= ti_command_out_sync(tdev
, TI_START_PORT
,
560 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
562 dev_err(&port
->dev
, "%s - cannot send start command, %d\n",
567 dbg("%s - sending TI_PURGE_PORT", __func__
);
568 status
= ti_command_out_sync(tdev
, TI_PURGE_PORT
,
569 (__u8
)(TI_UART1_PORT
+ port_number
), TI_PURGE_INPUT
, NULL
, 0);
571 dev_err(&port
->dev
, "%s - cannot clear input buffers, %d\n",
575 status
= ti_command_out_sync(tdev
, TI_PURGE_PORT
,
576 (__u8
)(TI_UART1_PORT
+ port_number
), TI_PURGE_OUTPUT
, NULL
, 0);
578 dev_err(&port
->dev
, "%s - cannot clear output buffers, %d\n",
583 /* reset the data toggle on the bulk endpoints to work around bug in
584 * host controllers where things get out of sync some times */
585 usb_clear_halt(dev
, port
->write_urb
->pipe
);
586 usb_clear_halt(dev
, port
->read_urb
->pipe
);
589 ti_set_termios(tty
, port
, tty
->termios
);
591 dbg("%s - sending TI_OPEN_PORT (2)", __func__
);
592 status
= ti_command_out_sync(tdev
, TI_OPEN_PORT
,
593 (__u8
)(TI_UART1_PORT
+ port_number
), open_settings
, NULL
, 0);
595 dev_err(&port
->dev
, "%s - cannot send open command (2), %d\n",
600 dbg("%s - sending TI_START_PORT (2)", __func__
);
601 status
= ti_command_out_sync(tdev
, TI_START_PORT
,
602 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
604 dev_err(&port
->dev
, "%s - cannot send start command (2), %d\n",
610 dbg("%s - start read urb", __func__
);
611 urb
= port
->read_urb
;
613 dev_err(&port
->dev
, "%s - no read urb\n", __func__
);
617 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
618 urb
->complete
= ti_bulk_in_callback
;
619 urb
->context
= tport
;
621 status
= usb_submit_urb(urb
, GFP_KERNEL
);
623 dev_err(&port
->dev
, "%s - submit read urb failed, %d\n",
628 tport
->tp_is_open
= 1;
629 ++tdev
->td_open_port_count
;
634 if (tdev
->td_open_port_count
== 0)
635 usb_kill_urb(port
->serial
->port
[0]->interrupt_in_urb
);
637 mutex_unlock(&tdev
->td_open_close_lock
);
638 dbg("%s - exit %d", __func__
, status
);
643 static void ti_close(struct usb_serial_port
*port
)
645 struct ti_device
*tdev
;
646 struct ti_port
*tport
;
651 dbg("%s - port %d", __func__
, port
->number
);
653 tdev
= usb_get_serial_data(port
->serial
);
654 tport
= usb_get_serial_port_data(port
);
655 if (tdev
== NULL
|| tport
== NULL
)
658 tport
->tp_is_open
= 0;
660 ti_drain(tport
, (tport
->tp_closing_wait
*HZ
)/100, 1);
662 usb_kill_urb(port
->read_urb
);
663 usb_kill_urb(port
->write_urb
);
664 tport
->tp_write_urb_in_use
= 0;
666 port_number
= port
->number
- port
->serial
->minor
;
668 dbg("%s - sending TI_CLOSE_PORT", __func__
);
669 status
= ti_command_out_sync(tdev
, TI_CLOSE_PORT
,
670 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
673 "%s - cannot send close port command, %d\n"
676 /* if mutex_lock is interrupted, continue anyway */
677 do_unlock
= !mutex_lock_interruptible(&tdev
->td_open_close_lock
);
678 --tport
->tp_tdev
->td_open_port_count
;
679 if (tport
->tp_tdev
->td_open_port_count
<= 0) {
680 /* last port is closed, shut down interrupt urb */
681 usb_kill_urb(port
->serial
->port
[0]->interrupt_in_urb
);
682 tport
->tp_tdev
->td_open_port_count
= 0;
685 mutex_unlock(&tdev
->td_open_close_lock
);
687 dbg("%s - exit", __func__
);
691 static int ti_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
692 const unsigned char *data
, int count
)
694 struct ti_port
*tport
= usb_get_serial_port_data(port
);
696 dbg("%s - port %d", __func__
, port
->number
);
699 dbg("%s - write request of 0 bytes", __func__
);
703 if (tport
== NULL
|| !tport
->tp_is_open
)
706 count
= kfifo_in_locked(&tport
->write_fifo
, data
, count
,
714 static int ti_write_room(struct tty_struct
*tty
)
716 struct usb_serial_port
*port
= tty
->driver_data
;
717 struct ti_port
*tport
= usb_get_serial_port_data(port
);
721 dbg("%s - port %d", __func__
, port
->number
);
726 spin_lock_irqsave(&tport
->tp_lock
, flags
);
727 room
= kfifo_avail(&tport
->write_fifo
);
728 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
730 dbg("%s - returns %d", __func__
, room
);
735 static int ti_chars_in_buffer(struct tty_struct
*tty
)
737 struct usb_serial_port
*port
= tty
->driver_data
;
738 struct ti_port
*tport
= usb_get_serial_port_data(port
);
742 dbg("%s - port %d", __func__
, port
->number
);
747 spin_lock_irqsave(&tport
->tp_lock
, flags
);
748 chars
= kfifo_len(&tport
->write_fifo
);
749 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
751 dbg("%s - returns %d", __func__
, chars
);
756 static void ti_throttle(struct tty_struct
*tty
)
758 struct usb_serial_port
*port
= tty
->driver_data
;
759 struct ti_port
*tport
= usb_get_serial_port_data(port
);
761 dbg("%s - port %d", __func__
, port
->number
);
766 if (I_IXOFF(tty
) || C_CRTSCTS(tty
))
767 ti_stop_read(tport
, tty
);
772 static void ti_unthrottle(struct tty_struct
*tty
)
774 struct usb_serial_port
*port
= tty
->driver_data
;
775 struct ti_port
*tport
= usb_get_serial_port_data(port
);
778 dbg("%s - port %d", __func__
, port
->number
);
783 if (I_IXOFF(tty
) || C_CRTSCTS(tty
)) {
784 status
= ti_restart_read(tport
, tty
);
786 dev_err(&port
->dev
, "%s - cannot restart read, %d\n",
792 static int ti_ioctl(struct tty_struct
*tty
, struct file
*file
,
793 unsigned int cmd
, unsigned long arg
)
795 struct usb_serial_port
*port
= tty
->driver_data
;
796 struct ti_port
*tport
= usb_get_serial_port_data(port
);
797 struct async_icount cnow
;
798 struct async_icount cprev
;
800 dbg("%s - port %d, cmd = 0x%04X", __func__
, port
->number
, cmd
);
807 dbg("%s - (%d) TIOCGSERIAL", __func__
, port
->number
);
808 return ti_get_serial_info(tport
,
809 (struct serial_struct __user
*)arg
);
811 dbg("%s - (%d) TIOCSSERIAL", __func__
, port
->number
);
812 return ti_set_serial_info(tty
, tport
,
813 (struct serial_struct __user
*)arg
);
815 dbg("%s - (%d) TIOCMIWAIT", __func__
, port
->number
);
816 cprev
= tport
->tp_icount
;
818 interruptible_sleep_on(&tport
->tp_msr_wait
);
819 if (signal_pending(current
))
821 cnow
= tport
->tp_icount
;
822 if (cnow
.rng
== cprev
.rng
&& cnow
.dsr
== cprev
.dsr
&&
823 cnow
.dcd
== cprev
.dcd
&& cnow
.cts
== cprev
.cts
)
824 return -EIO
; /* no change => error */
825 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
826 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
827 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
828 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
)))
834 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
835 __func__
, port
->number
,
836 tport
->tp_icount
.rx
, tport
->tp_icount
.tx
);
837 if (copy_to_user((void __user
*)arg
, &tport
->tp_icount
,
838 sizeof(tport
->tp_icount
)))
846 static void ti_set_termios(struct tty_struct
*tty
,
847 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
849 struct ti_port
*tport
= usb_get_serial_port_data(port
);
850 struct ti_uart_config
*config
;
851 tcflag_t cflag
, iflag
;
854 int port_number
= port
->number
- port
->serial
->minor
;
857 dbg("%s - port %d", __func__
, port
->number
);
859 cflag
= tty
->termios
->c_cflag
;
860 iflag
= tty
->termios
->c_iflag
;
862 dbg("%s - cflag %08x, iflag %08x", __func__
, cflag
, iflag
);
863 dbg("%s - old clfag %08x, old iflag %08x", __func__
,
864 old_termios
->c_cflag
, old_termios
->c_iflag
);
869 config
= kmalloc(sizeof(*config
), GFP_KERNEL
);
871 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
877 /* these flags must be set */
878 config
->wFlags
|= TI_UART_ENABLE_MS_INTS
;
879 config
->wFlags
|= TI_UART_ENABLE_AUTO_START_DMA
;
880 config
->bUartMode
= (__u8
)(tport
->tp_uart_mode
);
882 switch (cflag
& CSIZE
) {
884 config
->bDataBits
= TI_UART_5_DATA_BITS
;
887 config
->bDataBits
= TI_UART_6_DATA_BITS
;
890 config
->bDataBits
= TI_UART_7_DATA_BITS
;
894 config
->bDataBits
= TI_UART_8_DATA_BITS
;
898 /* CMSPAR isn't supported by this driver */
899 tty
->termios
->c_cflag
&= ~CMSPAR
;
901 if (cflag
& PARENB
) {
902 if (cflag
& PARODD
) {
903 config
->wFlags
|= TI_UART_ENABLE_PARITY_CHECKING
;
904 config
->bParity
= TI_UART_ODD_PARITY
;
906 config
->wFlags
|= TI_UART_ENABLE_PARITY_CHECKING
;
907 config
->bParity
= TI_UART_EVEN_PARITY
;
910 config
->wFlags
&= ~TI_UART_ENABLE_PARITY_CHECKING
;
911 config
->bParity
= TI_UART_NO_PARITY
;
915 config
->bStopBits
= TI_UART_2_STOP_BITS
;
917 config
->bStopBits
= TI_UART_1_STOP_BITS
;
919 if (cflag
& CRTSCTS
) {
920 /* RTS flow control must be off to drop RTS for baud rate B0 */
921 if ((cflag
& CBAUD
) != B0
)
922 config
->wFlags
|= TI_UART_ENABLE_RTS_IN
;
923 config
->wFlags
|= TI_UART_ENABLE_CTS_OUT
;
926 ti_restart_read(tport
, tty
);
929 if (I_IXOFF(tty
) || I_IXON(tty
)) {
930 config
->cXon
= START_CHAR(tty
);
931 config
->cXoff
= STOP_CHAR(tty
);
934 config
->wFlags
|= TI_UART_ENABLE_X_IN
;
936 ti_restart_read(tport
, tty
);
939 config
->wFlags
|= TI_UART_ENABLE_X_OUT
;
942 baud
= tty_get_baud_rate(tty
);
945 if (tport
->tp_tdev
->td_is_3410
)
946 config
->wBaudRate
= (__u16
)((923077 + baud
/2) / baud
);
948 config
->wBaudRate
= (__u16
)((461538 + baud
/2) / baud
);
950 /* FIXME: Should calculate resulting baud here and report it back */
951 if ((cflag
& CBAUD
) != B0
)
952 tty_encode_baud_rate(tty
, baud
, baud
);
954 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
955 __func__
, baud
, config
->wBaudRate
, config
->wFlags
, config
->bDataBits
, config
->bParity
, config
->bStopBits
, config
->cXon
, config
->cXoff
, config
->bUartMode
);
957 cpu_to_be16s(&config
->wBaudRate
);
958 cpu_to_be16s(&config
->wFlags
);
960 status
= ti_command_out_sync(tport
->tp_tdev
, TI_SET_CONFIG
,
961 (__u8
)(TI_UART1_PORT
+ port_number
), 0, (__u8
*)config
,
964 dev_err(&port
->dev
, "%s - cannot set config on port %d, %d\n",
965 __func__
, port_number
, status
);
967 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
968 mcr
= tport
->tp_shadow_mcr
;
969 /* if baud rate is B0, clear RTS and DTR */
970 if ((cflag
& CBAUD
) == B0
)
971 mcr
&= ~(TI_MCR_DTR
| TI_MCR_RTS
);
972 status
= ti_set_mcr(tport
, mcr
);
975 "%s - cannot set modem control on port %d, %d\n",
976 __func__
, port_number
, status
);
982 static int ti_tiocmget(struct tty_struct
*tty
, struct file
*file
)
984 struct usb_serial_port
*port
= tty
->driver_data
;
985 struct ti_port
*tport
= usb_get_serial_port_data(port
);
991 dbg("%s - port %d", __func__
, port
->number
);
996 spin_lock_irqsave(&tport
->tp_lock
, flags
);
998 mcr
= tport
->tp_shadow_mcr
;
999 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1001 result
= ((mcr
& TI_MCR_DTR
) ? TIOCM_DTR
: 0)
1002 | ((mcr
& TI_MCR_RTS
) ? TIOCM_RTS
: 0)
1003 | ((mcr
& TI_MCR_LOOP
) ? TIOCM_LOOP
: 0)
1004 | ((msr
& TI_MSR_CTS
) ? TIOCM_CTS
: 0)
1005 | ((msr
& TI_MSR_CD
) ? TIOCM_CAR
: 0)
1006 | ((msr
& TI_MSR_RI
) ? TIOCM_RI
: 0)
1007 | ((msr
& TI_MSR_DSR
) ? TIOCM_DSR
: 0);
1009 dbg("%s - 0x%04X", __func__
, result
);
1015 static int ti_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1016 unsigned int set
, unsigned int clear
)
1018 struct usb_serial_port
*port
= tty
->driver_data
;
1019 struct ti_port
*tport
= usb_get_serial_port_data(port
);
1021 unsigned long flags
;
1023 dbg("%s - port %d", __func__
, port
->number
);
1028 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1029 mcr
= tport
->tp_shadow_mcr
;
1031 if (set
& TIOCM_RTS
)
1033 if (set
& TIOCM_DTR
)
1035 if (set
& TIOCM_LOOP
)
1038 if (clear
& TIOCM_RTS
)
1040 if (clear
& TIOCM_DTR
)
1042 if (clear
& TIOCM_LOOP
)
1043 mcr
&= ~TI_MCR_LOOP
;
1044 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1046 return ti_set_mcr(tport
, mcr
);
1050 static void ti_break(struct tty_struct
*tty
, int break_state
)
1052 struct usb_serial_port
*port
= tty
->driver_data
;
1053 struct ti_port
*tport
= usb_get_serial_port_data(port
);
1056 dbg("%s - state = %d", __func__
, break_state
);
1061 ti_drain(tport
, (tport
->tp_closing_wait
*HZ
)/100, 0);
1063 status
= ti_write_byte(tport
->tp_tdev
,
1064 tport
->tp_uart_base_addr
+ TI_UART_OFFSET_LCR
,
1065 TI_LCR_BREAK
, break_state
== -1 ? TI_LCR_BREAK
: 0);
1068 dbg("%s - error setting break, %d", __func__
, status
);
1072 static void ti_interrupt_callback(struct urb
*urb
)
1074 struct ti_device
*tdev
= urb
->context
;
1075 struct usb_serial_port
*port
;
1076 struct usb_serial
*serial
= tdev
->td_serial
;
1077 struct ti_port
*tport
;
1078 struct device
*dev
= &urb
->dev
->dev
;
1079 unsigned char *data
= urb
->transfer_buffer
;
1080 int length
= urb
->actual_length
;
1083 int status
= urb
->status
;
1087 dbg("%s", __func__
);
1095 dbg("%s - urb shutting down, %d", __func__
, status
);
1096 tdev
->td_urb_error
= 1;
1099 dev_err(dev
, "%s - nonzero urb status, %d\n",
1101 tdev
->td_urb_error
= 1;
1106 dbg("%s - bad packet size, %d", __func__
, length
);
1110 if (data
[0] == TI_CODE_HARDWARE_ERROR
) {
1111 dev_err(dev
, "%s - hardware error, %d\n", __func__
, data
[1]);
1115 port_number
= TI_GET_PORT_FROM_CODE(data
[0]);
1116 function
= TI_GET_FUNC_FROM_CODE(data
[0]);
1118 dbg("%s - port_number %d, function %d, data 0x%02X",
1119 __func__
, port_number
, function
, data
[1]);
1121 if (port_number
>= serial
->num_ports
) {
1122 dev_err(dev
, "%s - bad port number, %d\n",
1123 __func__
, port_number
);
1127 port
= serial
->port
[port_number
];
1129 tport
= usb_get_serial_port_data(port
);
1134 case TI_CODE_DATA_ERROR
:
1135 dev_err(dev
, "%s - DATA ERROR, port %d, data 0x%02X\n",
1136 __func__
, port_number
, data
[1]);
1139 case TI_CODE_MODEM_STATUS
:
1141 dbg("%s - port %d, msr 0x%02X", __func__
, port_number
, msr
);
1142 ti_handle_new_msr(tport
, msr
);
1146 dev_err(dev
, "%s - unknown interrupt code, 0x%02X\n",
1152 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
1154 dev_err(dev
, "%s - resubmit interrupt urb failed, %d\n",
1159 static void ti_bulk_in_callback(struct urb
*urb
)
1161 struct ti_port
*tport
= urb
->context
;
1162 struct usb_serial_port
*port
= tport
->tp_port
;
1163 struct device
*dev
= &urb
->dev
->dev
;
1164 int status
= urb
->status
;
1166 struct tty_struct
*tty
;
1168 dbg("%s", __func__
);
1176 dbg("%s - urb shutting down, %d", __func__
, status
);
1177 tport
->tp_tdev
->td_urb_error
= 1;
1178 wake_up_interruptible(&tport
->tp_write_wait
);
1181 dev_err(dev
, "%s - nonzero urb status, %d\n",
1183 tport
->tp_tdev
->td_urb_error
= 1;
1184 wake_up_interruptible(&tport
->tp_write_wait
);
1187 if (status
== -EPIPE
)
1191 dev_err(dev
, "%s - stopping read!\n", __func__
);
1195 tty
= tty_port_tty_get(&port
->port
);
1197 if (urb
->actual_length
) {
1198 usb_serial_debug_data(debug
, dev
, __func__
,
1199 urb
->actual_length
, urb
->transfer_buffer
);
1201 if (!tport
->tp_is_open
)
1202 dbg("%s - port closed, dropping data",
1205 ti_recv(&urb
->dev
->dev
, tty
,
1206 urb
->transfer_buffer
,
1207 urb
->actual_length
);
1208 spin_lock(&tport
->tp_lock
);
1209 tport
->tp_icount
.rx
+= urb
->actual_length
;
1210 spin_unlock(&tport
->tp_lock
);
1216 /* continue to read unless stopping */
1217 spin_lock(&tport
->tp_lock
);
1218 if (tport
->tp_read_urb_state
== TI_READ_URB_RUNNING
) {
1219 urb
->dev
= port
->serial
->dev
;
1220 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
1221 } else if (tport
->tp_read_urb_state
== TI_READ_URB_STOPPING
) {
1222 tport
->tp_read_urb_state
= TI_READ_URB_STOPPED
;
1224 spin_unlock(&tport
->tp_lock
);
1226 dev_err(dev
, "%s - resubmit read urb failed, %d\n",
1231 static void ti_bulk_out_callback(struct urb
*urb
)
1233 struct ti_port
*tport
= urb
->context
;
1234 struct usb_serial_port
*port
= tport
->tp_port
;
1235 struct device
*dev
= &urb
->dev
->dev
;
1236 int status
= urb
->status
;
1238 dbg("%s - port %d", __func__
, port
->number
);
1240 tport
->tp_write_urb_in_use
= 0;
1248 dbg("%s - urb shutting down, %d", __func__
, status
);
1249 tport
->tp_tdev
->td_urb_error
= 1;
1250 wake_up_interruptible(&tport
->tp_write_wait
);
1253 dev_err(dev
, "%s - nonzero urb status, %d\n",
1255 tport
->tp_tdev
->td_urb_error
= 1;
1256 wake_up_interruptible(&tport
->tp_write_wait
);
1259 /* send any buffered data */
1264 static void ti_recv(struct device
*dev
, struct tty_struct
*tty
,
1265 unsigned char *data
, int length
)
1270 cnt
= tty_insert_flip_string(tty
, data
, length
);
1272 dev_err(dev
, "%s - dropping data, %d bytes lost\n",
1273 __func__
, length
- cnt
);
1277 tty_flip_buffer_push(tty
);
1280 } while (length
> 0);
1285 static void ti_send(struct ti_port
*tport
)
1288 struct usb_serial_port
*port
= tport
->tp_port
;
1289 struct tty_struct
*tty
= tty_port_tty_get(&port
->port
); /* FIXME */
1290 unsigned long flags
;
1293 dbg("%s - port %d", __func__
, port
->number
);
1295 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1297 if (tport
->tp_write_urb_in_use
)
1300 count
= kfifo_out(&tport
->write_fifo
,
1301 port
->write_urb
->transfer_buffer
,
1302 port
->bulk_out_size
);
1307 tport
->tp_write_urb_in_use
= 1;
1309 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1311 usb_serial_debug_data(debug
, &port
->dev
, __func__
, count
,
1312 port
->write_urb
->transfer_buffer
);
1314 usb_fill_bulk_urb(port
->write_urb
, port
->serial
->dev
,
1315 usb_sndbulkpipe(port
->serial
->dev
,
1316 port
->bulk_out_endpointAddress
),
1317 port
->write_urb
->transfer_buffer
, count
,
1318 ti_bulk_out_callback
, tport
);
1320 result
= usb_submit_urb(port
->write_urb
, GFP_ATOMIC
);
1322 dev_err(&port
->dev
, "%s - submit write urb failed, %d\n",
1324 tport
->tp_write_urb_in_use
= 0;
1325 /* TODO: reschedule ti_send */
1327 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1328 tport
->tp_icount
.tx
+= count
;
1329 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1332 /* more room in the buffer for new writes, wakeup */
1336 wake_up_interruptible(&tport
->tp_write_wait
);
1339 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1345 static int ti_set_mcr(struct ti_port
*tport
, unsigned int mcr
)
1347 unsigned long flags
;
1350 status
= ti_write_byte(tport
->tp_tdev
,
1351 tport
->tp_uart_base_addr
+ TI_UART_OFFSET_MCR
,
1352 TI_MCR_RTS
| TI_MCR_DTR
| TI_MCR_LOOP
, mcr
);
1354 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1356 tport
->tp_shadow_mcr
= mcr
;
1357 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1363 static int ti_get_lsr(struct ti_port
*tport
)
1366 struct ti_device
*tdev
= tport
->tp_tdev
;
1367 struct usb_serial_port
*port
= tport
->tp_port
;
1368 int port_number
= port
->number
- port
->serial
->minor
;
1369 struct ti_port_status
*data
;
1371 dbg("%s - port %d", __func__
, port
->number
);
1373 size
= sizeof(struct ti_port_status
);
1374 data
= kmalloc(size
, GFP_KERNEL
);
1376 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
1380 status
= ti_command_in_sync(tdev
, TI_GET_PORT_STATUS
,
1381 (__u8
)(TI_UART1_PORT
+port_number
), 0, (__u8
*)data
, size
);
1384 "%s - get port status command failed, %d\n",
1389 dbg("%s - lsr 0x%02X", __func__
, data
->bLSR
);
1391 tport
->tp_lsr
= data
->bLSR
;
1399 static int ti_get_serial_info(struct ti_port
*tport
,
1400 struct serial_struct __user
*ret_arg
)
1402 struct usb_serial_port
*port
= tport
->tp_port
;
1403 struct serial_struct ret_serial
;
1408 memset(&ret_serial
, 0, sizeof(ret_serial
));
1410 ret_serial
.type
= PORT_16550A
;
1411 ret_serial
.line
= port
->serial
->minor
;
1412 ret_serial
.port
= port
->number
- port
->serial
->minor
;
1413 ret_serial
.flags
= tport
->tp_flags
;
1414 ret_serial
.xmit_fifo_size
= TI_WRITE_BUF_SIZE
;
1415 ret_serial
.baud_base
= tport
->tp_tdev
->td_is_3410
? 921600 : 460800;
1416 ret_serial
.closing_wait
= tport
->tp_closing_wait
;
1418 if (copy_to_user(ret_arg
, &ret_serial
, sizeof(*ret_arg
)))
1425 static int ti_set_serial_info(struct tty_struct
*tty
, struct ti_port
*tport
,
1426 struct serial_struct __user
*new_arg
)
1428 struct serial_struct new_serial
;
1430 if (copy_from_user(&new_serial
, new_arg
, sizeof(new_serial
)))
1433 tport
->tp_flags
= new_serial
.flags
& TI_SET_SERIAL_FLAGS
;
1434 tport
->tp_closing_wait
= new_serial
.closing_wait
;
1440 static void ti_handle_new_msr(struct ti_port
*tport
, __u8 msr
)
1442 struct async_icount
*icount
;
1443 struct tty_struct
*tty
;
1444 unsigned long flags
;
1446 dbg("%s - msr 0x%02X", __func__
, msr
);
1448 if (msr
& TI_MSR_DELTA_MASK
) {
1449 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1450 icount
= &tport
->tp_icount
;
1451 if (msr
& TI_MSR_DELTA_CTS
)
1453 if (msr
& TI_MSR_DELTA_DSR
)
1455 if (msr
& TI_MSR_DELTA_CD
)
1457 if (msr
& TI_MSR_DELTA_RI
)
1459 wake_up_interruptible(&tport
->tp_msr_wait
);
1460 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1463 tport
->tp_msr
= msr
& TI_MSR_MASK
;
1465 /* handle CTS flow control */
1466 tty
= tty_port_tty_get(&tport
->tp_port
->port
);
1467 if (tty
&& C_CRTSCTS(tty
)) {
1468 if (msr
& TI_MSR_CTS
) {
1469 tty
->hw_stopped
= 0;
1472 tty
->hw_stopped
= 1;
1479 static void ti_drain(struct ti_port
*tport
, unsigned long timeout
, int flush
)
1481 struct ti_device
*tdev
= tport
->tp_tdev
;
1482 struct usb_serial_port
*port
= tport
->tp_port
;
1485 dbg("%s - port %d", __func__
, port
->number
);
1487 spin_lock_irq(&tport
->tp_lock
);
1489 /* wait for data to drain from the buffer */
1490 tdev
->td_urb_error
= 0;
1491 init_waitqueue_entry(&wait
, current
);
1492 add_wait_queue(&tport
->tp_write_wait
, &wait
);
1494 set_current_state(TASK_INTERRUPTIBLE
);
1495 if (kfifo_len(&tport
->write_fifo
) == 0
1496 || timeout
== 0 || signal_pending(current
)
1497 || tdev
->td_urb_error
1498 || port
->serial
->disconnected
) /* disconnect */
1500 spin_unlock_irq(&tport
->tp_lock
);
1501 timeout
= schedule_timeout(timeout
);
1502 spin_lock_irq(&tport
->tp_lock
);
1504 set_current_state(TASK_RUNNING
);
1505 remove_wait_queue(&tport
->tp_write_wait
, &wait
);
1507 /* flush any remaining data in the buffer */
1509 kfifo_reset_out(&tport
->write_fifo
);
1511 spin_unlock_irq(&tport
->tp_lock
);
1513 mutex_lock(&port
->serial
->disc_mutex
);
1514 /* wait for data to drain from the device */
1515 /* wait for empty tx register, plus 20 ms */
1517 tport
->tp_lsr
&= ~TI_LSR_TX_EMPTY
;
1518 while ((long)(jiffies
- timeout
) < 0 && !signal_pending(current
)
1519 && !(tport
->tp_lsr
&TI_LSR_TX_EMPTY
) && !tdev
->td_urb_error
1520 && !port
->serial
->disconnected
) {
1521 if (ti_get_lsr(tport
))
1523 mutex_unlock(&port
->serial
->disc_mutex
);
1524 msleep_interruptible(20);
1525 mutex_lock(&port
->serial
->disc_mutex
);
1527 mutex_unlock(&port
->serial
->disc_mutex
);
1531 static void ti_stop_read(struct ti_port
*tport
, struct tty_struct
*tty
)
1533 unsigned long flags
;
1535 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1537 if (tport
->tp_read_urb_state
== TI_READ_URB_RUNNING
)
1538 tport
->tp_read_urb_state
= TI_READ_URB_STOPPING
;
1540 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1544 static int ti_restart_read(struct ti_port
*tport
, struct tty_struct
*tty
)
1548 unsigned long flags
;
1550 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1552 if (tport
->tp_read_urb_state
== TI_READ_URB_STOPPED
) {
1553 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
1554 urb
= tport
->tp_port
->read_urb
;
1555 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1556 urb
->complete
= ti_bulk_in_callback
;
1557 urb
->context
= tport
;
1558 urb
->dev
= tport
->tp_port
->serial
->dev
;
1559 status
= usb_submit_urb(urb
, GFP_KERNEL
);
1561 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
1562 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1569 static int ti_command_out_sync(struct ti_device
*tdev
, __u8 command
,
1570 __u16 moduleid
, __u16 value
, __u8
*data
, int size
)
1574 status
= usb_control_msg(tdev
->td_serial
->dev
,
1575 usb_sndctrlpipe(tdev
->td_serial
->dev
, 0), command
,
1576 (USB_TYPE_VENDOR
| USB_RECIP_DEVICE
| USB_DIR_OUT
),
1577 value
, moduleid
, data
, size
, 1000);
1589 static int ti_command_in_sync(struct ti_device
*tdev
, __u8 command
,
1590 __u16 moduleid
, __u16 value
, __u8
*data
, int size
)
1594 status
= usb_control_msg(tdev
->td_serial
->dev
,
1595 usb_rcvctrlpipe(tdev
->td_serial
->dev
, 0), command
,
1596 (USB_TYPE_VENDOR
| USB_RECIP_DEVICE
| USB_DIR_IN
),
1597 value
, moduleid
, data
, size
, 1000);
1609 static int ti_write_byte(struct ti_device
*tdev
, unsigned long addr
,
1610 __u8 mask
, __u8 byte
)
1614 struct ti_write_data_bytes
*data
;
1615 struct device
*dev
= &tdev
->td_serial
->dev
->dev
;
1617 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1618 __func__
, addr
, mask
, byte
);
1620 size
= sizeof(struct ti_write_data_bytes
) + 2;
1621 data
= kmalloc(size
, GFP_KERNEL
);
1623 dev_err(dev
, "%s - out of memory\n", __func__
);
1627 data
->bAddrType
= TI_RW_DATA_ADDR_XDATA
;
1628 data
->bDataType
= TI_RW_DATA_BYTE
;
1629 data
->bDataCounter
= 1;
1630 data
->wBaseAddrHi
= cpu_to_be16(addr
>>16);
1631 data
->wBaseAddrLo
= cpu_to_be16(addr
);
1632 data
->bData
[0] = mask
;
1633 data
->bData
[1] = byte
;
1635 status
= ti_command_out_sync(tdev
, TI_WRITE_DATA
, TI_RAM_PORT
, 0,
1636 (__u8
*)data
, size
);
1639 dev_err(dev
, "%s - failed, %d\n", __func__
, status
);
1646 static int ti_do_download(struct usb_device
*dev
, int pipe
,
1647 u8
*buffer
, int size
)
1652 struct ti_firmware_header
*header
;
1656 for (pos
= sizeof(struct ti_firmware_header
); pos
< size
; pos
++)
1657 cs
= (__u8
)(cs
+ buffer
[pos
]);
1659 header
= (struct ti_firmware_header
*)buffer
;
1660 header
->wLength
= cpu_to_le16((__u16
)(size
1661 - sizeof(struct ti_firmware_header
)));
1662 header
->bCheckSum
= cs
;
1664 dbg("%s - downloading firmware", __func__
);
1665 for (pos
= 0; pos
< size
; pos
+= done
) {
1666 len
= min(size
- pos
, TI_DOWNLOAD_MAX_PACKET_SIZE
);
1667 status
= usb_bulk_msg(dev
, pipe
, buffer
+ pos
, len
,
1675 static int ti_download_firmware(struct ti_device
*tdev
)
1680 struct usb_device
*dev
= tdev
->td_serial
->dev
;
1681 unsigned int pipe
= usb_sndbulkpipe(dev
,
1682 tdev
->td_serial
->port
[0]->bulk_out_endpointAddress
);
1683 const struct firmware
*fw_p
;
1686 dbg("%s\n", __func__
);
1687 /* try ID specific firmware first, then try generic firmware */
1688 sprintf(buf
, "ti_usb-v%04x-p%04x.fw", dev
->descriptor
.idVendor
,
1689 dev
->descriptor
.idProduct
);
1690 if ((status
= request_firmware(&fw_p
, buf
, &dev
->dev
)) != 0) {
1692 if (dev
->descriptor
.idVendor
== MTS_VENDOR_ID
) {
1693 switch (dev
->descriptor
.idProduct
) {
1694 case MTS_CDMA_PRODUCT_ID
:
1695 strcpy(buf
, "mts_cdma.fw");
1697 case MTS_GSM_PRODUCT_ID
:
1698 strcpy(buf
, "mts_gsm.fw");
1700 case MTS_EDGE_PRODUCT_ID
:
1701 strcpy(buf
, "mts_edge.fw");
1703 case MTS_MT9234MU_PRODUCT_ID
:
1704 strcpy(buf
, "mts_mt9234mu.fw");
1706 case MTS_MT9234ZBA_PRODUCT_ID
:
1707 strcpy(buf
, "mts_mt9234zba.fw");
1709 case MTS_MT9234ZBAOLD_PRODUCT_ID
:
1710 strcpy(buf
, "mts_mt9234zba.fw");
1713 if (buf
[0] == '\0') {
1714 if (tdev
->td_is_3410
)
1715 strcpy(buf
, "ti_3410.fw");
1717 strcpy(buf
, "ti_5052.fw");
1719 status
= request_firmware(&fw_p
, buf
, &dev
->dev
);
1722 dev_err(&dev
->dev
, "%s - firmware not found\n", __func__
);
1725 if (fw_p
->size
> TI_FIRMWARE_BUF_SIZE
) {
1726 dev_err(&dev
->dev
, "%s - firmware too large %zu\n", __func__
, fw_p
->size
);
1730 buffer_size
= TI_FIRMWARE_BUF_SIZE
+ sizeof(struct ti_firmware_header
);
1731 buffer
= kmalloc(buffer_size
, GFP_KERNEL
);
1733 memcpy(buffer
, fw_p
->data
, fw_p
->size
);
1734 memset(buffer
+ fw_p
->size
, 0xff, buffer_size
- fw_p
->size
);
1735 status
= ti_do_download(dev
, pipe
, buffer
, fw_p
->size
);
1738 dbg("%s ENOMEM\n", __func__
);
1741 release_firmware(fw_p
);
1743 dev_err(&dev
->dev
, "%s - error downloading firmware, %d\n",
1748 dbg("%s - download successful", __func__
);