3 * TI 3410/5052 USB Serial Driver
5 * Copyright (C) 2004 Texas Instruments
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>.
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
23 #include <linux/firmware.h>
24 #include <linux/init.h>
25 #include <linux/slab.h>
26 #include <linux/tty.h>
27 #include <linux/tty_driver.h>
28 #include <linux/tty_flip.h>
29 #include <linux/module.h>
30 #include <linux/spinlock.h>
31 #include <linux/ioctl.h>
32 #include <linux/serial.h>
33 #include <linux/circ_buf.h>
34 #include <linux/mutex.h>
35 #include <linux/uaccess.h>
36 #include <linux/usb.h>
37 #include <linux/usb/serial.h>
39 #include "ti_usb_3410_5052.h"
43 #define TI_DRIVER_VERSION "v0.9"
44 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
45 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
47 #define TI_FIRMWARE_BUF_SIZE 16284
49 #define TI_WRITE_BUF_SIZE 1024
51 #define TI_TRANSFER_TIMEOUT 2
53 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
55 /* supported setserial flags */
56 #define TI_SET_SERIAL_FLAGS 0
59 #define TI_READ_URB_RUNNING 0
60 #define TI_READ_URB_STOPPING 1
61 #define TI_READ_URB_STOPPED 2
63 #define TI_EXTRA_VID_PID_COUNT 5
73 __u8 tp_uart_mode
; /* 232 or 485 modes */
74 unsigned int tp_uart_base_addr
;
76 int tp_closing_wait
;/* in .01 secs */
77 struct async_icount tp_icount
;
78 wait_queue_head_t tp_msr_wait
; /* wait for msr change */
79 wait_queue_head_t tp_write_wait
;
80 struct ti_device
*tp_tdev
;
81 struct usb_serial_port
*tp_port
;
83 int tp_read_urb_state
;
84 int tp_write_urb_in_use
;
85 struct circ_buf
*tp_write_buf
;
89 struct mutex td_open_close_lock
;
90 int td_open_port_count
;
91 struct usb_serial
*td_serial
;
97 /* Function Declarations */
99 static int ti_startup(struct usb_serial
*serial
);
100 static void ti_release(struct usb_serial
*serial
);
101 static int ti_open(struct tty_struct
*tty
, struct usb_serial_port
*port
,
103 static void ti_close(struct usb_serial_port
*port
);
104 static int ti_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
105 const unsigned char *data
, int count
);
106 static int ti_write_room(struct tty_struct
*tty
);
107 static int ti_chars_in_buffer(struct tty_struct
*tty
);
108 static void ti_throttle(struct tty_struct
*tty
);
109 static void ti_unthrottle(struct tty_struct
*tty
);
110 static int ti_ioctl(struct tty_struct
*tty
, struct file
*file
,
111 unsigned int cmd
, unsigned long arg
);
112 static void ti_set_termios(struct tty_struct
*tty
,
113 struct usb_serial_port
*port
, struct ktermios
*old_termios
);
114 static int ti_tiocmget(struct tty_struct
*tty
, struct file
*file
);
115 static int ti_tiocmset(struct tty_struct
*tty
, struct file
*file
,
116 unsigned int set
, unsigned int clear
);
117 static void ti_break(struct tty_struct
*tty
, int break_state
);
118 static void ti_interrupt_callback(struct urb
*urb
);
119 static void ti_bulk_in_callback(struct urb
*urb
);
120 static void ti_bulk_out_callback(struct urb
*urb
);
122 static void ti_recv(struct device
*dev
, struct tty_struct
*tty
,
123 unsigned char *data
, int length
);
124 static void ti_send(struct ti_port
*tport
);
125 static int ti_set_mcr(struct ti_port
*tport
, unsigned int mcr
);
126 static int ti_get_lsr(struct ti_port
*tport
);
127 static int ti_get_serial_info(struct ti_port
*tport
,
128 struct serial_struct __user
*ret_arg
);
129 static int ti_set_serial_info(struct tty_struct
*tty
, struct ti_port
*tport
,
130 struct serial_struct __user
*new_arg
);
131 static void ti_handle_new_msr(struct ti_port
*tport
, __u8 msr
);
133 static void ti_drain(struct ti_port
*tport
, unsigned long timeout
, int flush
);
135 static void ti_stop_read(struct ti_port
*tport
, struct tty_struct
*tty
);
136 static int ti_restart_read(struct ti_port
*tport
, struct tty_struct
*tty
);
138 static int ti_command_out_sync(struct ti_device
*tdev
, __u8 command
,
139 __u16 moduleid
, __u16 value
, __u8
*data
, int size
);
140 static int ti_command_in_sync(struct ti_device
*tdev
, __u8 command
,
141 __u16 moduleid
, __u16 value
, __u8
*data
, int size
);
143 static int ti_write_byte(struct ti_device
*tdev
, unsigned long addr
,
144 __u8 mask
, __u8 byte
);
146 static int ti_download_firmware(struct ti_device
*tdev
);
148 /* circular buffer */
149 static struct circ_buf
*ti_buf_alloc(void);
150 static void ti_buf_free(struct circ_buf
*cb
);
151 static void ti_buf_clear(struct circ_buf
*cb
);
152 static int ti_buf_data_avail(struct circ_buf
*cb
);
153 static int ti_buf_space_avail(struct circ_buf
*cb
);
154 static int ti_buf_put(struct circ_buf
*cb
, const char *buf
, int count
);
155 static int ti_buf_get(struct circ_buf
*cb
, char *buf
, int count
);
160 /* module parameters */
162 static int closing_wait
= TI_DEFAULT_CLOSING_WAIT
;
163 static ushort vendor_3410
[TI_EXTRA_VID_PID_COUNT
];
164 static unsigned int vendor_3410_count
;
165 static ushort product_3410
[TI_EXTRA_VID_PID_COUNT
];
166 static unsigned int product_3410_count
;
167 static ushort vendor_5052
[TI_EXTRA_VID_PID_COUNT
];
168 static unsigned int vendor_5052_count
;
169 static ushort product_5052
[TI_EXTRA_VID_PID_COUNT
];
170 static unsigned int product_5052_count
;
172 /* supported devices */
173 /* the array dimension is the number of default entries plus */
174 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
176 static struct usb_device_id ti_id_table_3410
[10+TI_EXTRA_VID_PID_COUNT
+1] = {
177 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_PRODUCT_ID
) },
178 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_EZ430_ID
) },
179 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_NO_FW_PRODUCT_ID
) },
180 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_NO_FW_PRODUCT_ID
) },
181 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_PRODUCT_ID
) },
182 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_PRODUCT_ID
) },
183 { USB_DEVICE(MTS_VENDOR_ID
, MTS_EDGE_PRODUCT_ID
) },
184 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
185 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454B_PRODUCT_ID
) },
186 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454C_PRODUCT_ID
) },
189 static struct usb_device_id ti_id_table_5052
[5+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
) },
194 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
197 static struct usb_device_id ti_id_table_combined
[14+2*TI_EXTRA_VID_PID_COUNT
+1] = {
198 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_PRODUCT_ID
) },
199 { USB_DEVICE(TI_VENDOR_ID
, TI_3410_EZ430_ID
) },
200 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_NO_FW_PRODUCT_ID
) },
201 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_NO_FW_PRODUCT_ID
) },
202 { USB_DEVICE(MTS_VENDOR_ID
, MTS_CDMA_PRODUCT_ID
) },
203 { USB_DEVICE(MTS_VENDOR_ID
, MTS_GSM_PRODUCT_ID
) },
204 { USB_DEVICE(MTS_VENDOR_ID
, MTS_EDGE_PRODUCT_ID
) },
205 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_BOOT_PRODUCT_ID
) },
206 { USB_DEVICE(TI_VENDOR_ID
, TI_5152_BOOT_PRODUCT_ID
) },
207 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_EEPROM_PRODUCT_ID
) },
208 { USB_DEVICE(TI_VENDOR_ID
, TI_5052_FIRMWARE_PRODUCT_ID
) },
209 { USB_DEVICE(IBM_VENDOR_ID
, IBM_4543_PRODUCT_ID
) },
210 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454B_PRODUCT_ID
) },
211 { USB_DEVICE(IBM_VENDOR_ID
, IBM_454C_PRODUCT_ID
) },
215 static struct usb_driver ti_usb_driver
= {
216 .name
= "ti_usb_3410_5052",
217 .probe
= usb_serial_probe
,
218 .disconnect
= usb_serial_disconnect
,
219 .id_table
= ti_id_table_combined
,
223 static struct usb_serial_driver ti_1port_device
= {
225 .owner
= THIS_MODULE
,
226 .name
= "ti_usb_3410_5052_1",
228 .description
= "TI USB 3410 1 port adapter",
229 .usb_driver
= &ti_usb_driver
,
230 .id_table
= ti_id_table_3410
,
232 .attach
= ti_startup
,
233 .release
= ti_release
,
237 .write_room
= ti_write_room
,
238 .chars_in_buffer
= ti_chars_in_buffer
,
239 .throttle
= ti_throttle
,
240 .unthrottle
= ti_unthrottle
,
242 .set_termios
= ti_set_termios
,
243 .tiocmget
= ti_tiocmget
,
244 .tiocmset
= ti_tiocmset
,
245 .break_ctl
= ti_break
,
246 .read_int_callback
= ti_interrupt_callback
,
247 .read_bulk_callback
= ti_bulk_in_callback
,
248 .write_bulk_callback
= ti_bulk_out_callback
,
251 static struct usb_serial_driver ti_2port_device
= {
253 .owner
= THIS_MODULE
,
254 .name
= "ti_usb_3410_5052_2",
256 .description
= "TI USB 5052 2 port adapter",
257 .usb_driver
= &ti_usb_driver
,
258 .id_table
= ti_id_table_5052
,
260 .attach
= ti_startup
,
261 .release
= ti_release
,
265 .write_room
= ti_write_room
,
266 .chars_in_buffer
= ti_chars_in_buffer
,
267 .throttle
= ti_throttle
,
268 .unthrottle
= ti_unthrottle
,
270 .set_termios
= ti_set_termios
,
271 .tiocmget
= ti_tiocmget
,
272 .tiocmset
= ti_tiocmset
,
273 .break_ctl
= ti_break
,
274 .read_int_callback
= ti_interrupt_callback
,
275 .read_bulk_callback
= ti_bulk_in_callback
,
276 .write_bulk_callback
= ti_bulk_out_callback
,
282 MODULE_AUTHOR(TI_DRIVER_AUTHOR
);
283 MODULE_DESCRIPTION(TI_DRIVER_DESC
);
284 MODULE_VERSION(TI_DRIVER_VERSION
);
285 MODULE_LICENSE("GPL");
287 MODULE_FIRMWARE("ti_3410.fw");
288 MODULE_FIRMWARE("ti_5052.fw");
289 MODULE_FIRMWARE("mts_cdma.fw");
290 MODULE_FIRMWARE("mts_gsm.fw");
291 MODULE_FIRMWARE("mts_edge.fw");
293 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
294 MODULE_PARM_DESC(debug
, "Enable debugging, 0=no, 1=yes");
296 module_param(closing_wait
, int, S_IRUGO
| S_IWUSR
);
297 MODULE_PARM_DESC(closing_wait
,
298 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
300 module_param_array(vendor_3410
, ushort
, &vendor_3410_count
, S_IRUGO
);
301 MODULE_PARM_DESC(vendor_3410
,
302 "Vendor ids for 3410 based devices, 1-5 short integers");
303 module_param_array(product_3410
, ushort
, &product_3410_count
, S_IRUGO
);
304 MODULE_PARM_DESC(product_3410
,
305 "Product ids for 3410 based devices, 1-5 short integers");
306 module_param_array(vendor_5052
, ushort
, &vendor_5052_count
, S_IRUGO
);
307 MODULE_PARM_DESC(vendor_5052
,
308 "Vendor ids for 5052 based devices, 1-5 short integers");
309 module_param_array(product_5052
, ushort
, &product_5052_count
, S_IRUGO
);
310 MODULE_PARM_DESC(product_5052
,
311 "Product ids for 5052 based devices, 1-5 short integers");
313 MODULE_DEVICE_TABLE(usb
, ti_id_table_combined
);
318 static int __init
ti_init(void)
323 /* insert extra vendor and product ids */
324 c
= ARRAY_SIZE(ti_id_table_combined
) - 2 * TI_EXTRA_VID_PID_COUNT
- 1;
325 j
= ARRAY_SIZE(ti_id_table_3410
) - TI_EXTRA_VID_PID_COUNT
- 1;
326 for (i
= 0; i
< min(vendor_3410_count
, product_3410_count
); i
++, j
++, c
++) {
327 ti_id_table_3410
[j
].idVendor
= vendor_3410
[i
];
328 ti_id_table_3410
[j
].idProduct
= product_3410
[i
];
329 ti_id_table_3410
[j
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
330 ti_id_table_combined
[c
].idVendor
= vendor_3410
[i
];
331 ti_id_table_combined
[c
].idProduct
= product_3410
[i
];
332 ti_id_table_combined
[c
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
334 j
= ARRAY_SIZE(ti_id_table_5052
) - TI_EXTRA_VID_PID_COUNT
- 1;
335 for (i
= 0; i
< min(vendor_5052_count
, product_5052_count
); i
++, j
++, c
++) {
336 ti_id_table_5052
[j
].idVendor
= vendor_5052
[i
];
337 ti_id_table_5052
[j
].idProduct
= product_5052
[i
];
338 ti_id_table_5052
[j
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
339 ti_id_table_combined
[c
].idVendor
= vendor_5052
[i
];
340 ti_id_table_combined
[c
].idProduct
= product_5052
[i
];
341 ti_id_table_combined
[c
].match_flags
= USB_DEVICE_ID_MATCH_DEVICE
;
344 ret
= usb_serial_register(&ti_1port_device
);
347 ret
= usb_serial_register(&ti_2port_device
);
351 ret
= usb_register(&ti_usb_driver
);
355 printk(KERN_INFO KBUILD_MODNAME
": " TI_DRIVER_VERSION
":"
356 TI_DRIVER_DESC
"\n");
361 usb_serial_deregister(&ti_2port_device
);
363 usb_serial_deregister(&ti_1port_device
);
369 static void __exit
ti_exit(void)
371 usb_serial_deregister(&ti_1port_device
);
372 usb_serial_deregister(&ti_2port_device
);
373 usb_deregister(&ti_usb_driver
);
377 module_init(ti_init
);
378 module_exit(ti_exit
);
381 static int ti_startup(struct usb_serial
*serial
)
383 struct ti_device
*tdev
;
384 struct ti_port
*tport
;
385 struct usb_device
*dev
= serial
->dev
;
390 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
391 __func__
, le16_to_cpu(dev
->descriptor
.idProduct
),
392 dev
->descriptor
.bNumConfigurations
,
393 dev
->actconfig
->desc
.bConfigurationValue
);
395 /* create device structure */
396 tdev
= kzalloc(sizeof(struct ti_device
), GFP_KERNEL
);
398 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
401 mutex_init(&tdev
->td_open_close_lock
);
402 tdev
->td_serial
= serial
;
403 usb_set_serial_data(serial
, tdev
);
405 /* determine device type */
406 if (usb_match_id(serial
->interface
, ti_id_table_3410
))
407 tdev
->td_is_3410
= 1;
408 dbg("%s - device type is %s", __func__
,
409 tdev
->td_is_3410
? "3410" : "5052");
411 /* if we have only 1 configuration, download firmware */
412 if (dev
->descriptor
.bNumConfigurations
== 1) {
413 if ((status
= ti_download_firmware(tdev
)) != 0)
416 /* 3410 must be reset, 5052 resets itself */
417 if (tdev
->td_is_3410
) {
418 msleep_interruptible(100);
419 usb_reset_device(dev
);
426 /* the second configuration must be set */
427 if (dev
->actconfig
->desc
.bConfigurationValue
== TI_BOOT_CONFIG
) {
428 status
= usb_driver_set_configuration(dev
, TI_ACTIVE_CONFIG
);
429 status
= status
? status
: -ENODEV
;
433 /* set up port structures */
434 for (i
= 0; i
< serial
->num_ports
; ++i
) {
435 tport
= kzalloc(sizeof(struct ti_port
), GFP_KERNEL
);
437 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
441 spin_lock_init(&tport
->tp_lock
);
442 tport
->tp_uart_base_addr
= (i
== 0 ?
443 TI_UART1_BASE_ADDR
: TI_UART2_BASE_ADDR
);
444 tport
->tp_closing_wait
= closing_wait
;
445 init_waitqueue_head(&tport
->tp_msr_wait
);
446 init_waitqueue_head(&tport
->tp_write_wait
);
447 tport
->tp_write_buf
= ti_buf_alloc();
448 if (tport
->tp_write_buf
== NULL
) {
449 dev_err(&dev
->dev
, "%s - out of memory\n", __func__
);
454 tport
->tp_port
= serial
->port
[i
];
455 tport
->tp_tdev
= tdev
;
456 usb_set_serial_port_data(serial
->port
[i
], tport
);
457 tport
->tp_uart_mode
= 0; /* default is RS232 */
463 for (--i
; i
>= 0; --i
) {
464 tport
= usb_get_serial_port_data(serial
->port
[i
]);
465 ti_buf_free(tport
->tp_write_buf
);
467 usb_set_serial_port_data(serial
->port
[i
], NULL
);
471 usb_set_serial_data(serial
, NULL
);
476 static void ti_release(struct usb_serial
*serial
)
479 struct ti_device
*tdev
= usb_get_serial_data(serial
);
480 struct ti_port
*tport
;
484 for (i
= 0; i
< serial
->num_ports
; ++i
) {
485 tport
= usb_get_serial_port_data(serial
->port
[i
]);
487 ti_buf_free(tport
->tp_write_buf
);
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
))
521 port_number
= port
->number
- port
->serial
->minor
;
523 memset(&(tport
->tp_icount
), 0x00, sizeof(tport
->tp_icount
));
526 tport
->tp_shadow_mcr
|= (TI_MCR_RTS
| TI_MCR_DTR
);
528 /* start interrupt urb the first time a port is opened on this device */
529 if (tdev
->td_open_port_count
== 0) {
530 dbg("%s - start interrupt in urb", __func__
);
531 urb
= tdev
->td_serial
->port
[0]->interrupt_in_urb
;
533 dev_err(&port
->dev
, "%s - no interrupt urb\n",
538 urb
->complete
= ti_interrupt_callback
;
541 status
= usb_submit_urb(urb
, GFP_KERNEL
);
544 "%s - submit interrupt urb failed, %d\n",
551 ti_set_termios(tty
, port
, tty
->termios
);
553 dbg("%s - sending TI_OPEN_PORT", __func__
);
554 status
= ti_command_out_sync(tdev
, TI_OPEN_PORT
,
555 (__u8
)(TI_UART1_PORT
+ port_number
), open_settings
, NULL
, 0);
557 dev_err(&port
->dev
, "%s - cannot send open command, %d\n",
562 dbg("%s - sending TI_START_PORT", __func__
);
563 status
= ti_command_out_sync(tdev
, TI_START_PORT
,
564 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
566 dev_err(&port
->dev
, "%s - cannot send start command, %d\n",
571 dbg("%s - sending TI_PURGE_PORT", __func__
);
572 status
= ti_command_out_sync(tdev
, TI_PURGE_PORT
,
573 (__u8
)(TI_UART1_PORT
+ port_number
), TI_PURGE_INPUT
, NULL
, 0);
575 dev_err(&port
->dev
, "%s - cannot clear input buffers, %d\n",
579 status
= ti_command_out_sync(tdev
, TI_PURGE_PORT
,
580 (__u8
)(TI_UART1_PORT
+ port_number
), TI_PURGE_OUTPUT
, NULL
, 0);
582 dev_err(&port
->dev
, "%s - cannot clear output buffers, %d\n",
587 /* reset the data toggle on the bulk endpoints to work around bug in
588 * host controllers where things get out of sync some times */
589 usb_clear_halt(dev
, port
->write_urb
->pipe
);
590 usb_clear_halt(dev
, port
->read_urb
->pipe
);
593 ti_set_termios(tty
, port
, tty
->termios
);
595 dbg("%s - sending TI_OPEN_PORT (2)", __func__
);
596 status
= ti_command_out_sync(tdev
, TI_OPEN_PORT
,
597 (__u8
)(TI_UART1_PORT
+ port_number
), open_settings
, NULL
, 0);
599 dev_err(&port
->dev
, "%s - cannot send open command (2), %d\n",
604 dbg("%s - sending TI_START_PORT (2)", __func__
);
605 status
= ti_command_out_sync(tdev
, TI_START_PORT
,
606 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
608 dev_err(&port
->dev
, "%s - cannot send start command (2), %d\n",
614 dbg("%s - start read urb", __func__
);
615 urb
= port
->read_urb
;
617 dev_err(&port
->dev
, "%s - no read urb\n", __func__
);
621 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
622 urb
->complete
= ti_bulk_in_callback
;
623 urb
->context
= tport
;
625 status
= usb_submit_urb(urb
, GFP_KERNEL
);
627 dev_err(&port
->dev
, "%s - submit read urb failed, %d\n",
632 tport
->tp_is_open
= 1;
633 ++tdev
->td_open_port_count
;
638 if (tdev
->td_open_port_count
== 0)
639 usb_kill_urb(port
->serial
->port
[0]->interrupt_in_urb
);
641 mutex_unlock(&tdev
->td_open_close_lock
);
642 dbg("%s - exit %d", __func__
, status
);
647 static void ti_close(struct usb_serial_port
*port
)
649 struct ti_device
*tdev
;
650 struct ti_port
*tport
;
655 dbg("%s - port %d", __func__
, port
->number
);
657 tdev
= usb_get_serial_data(port
->serial
);
658 tport
= usb_get_serial_port_data(port
);
659 if (tdev
== NULL
|| tport
== NULL
)
662 tport
->tp_is_open
= 0;
664 ti_drain(tport
, (tport
->tp_closing_wait
*HZ
)/100, 1);
666 usb_kill_urb(port
->read_urb
);
667 usb_kill_urb(port
->write_urb
);
668 tport
->tp_write_urb_in_use
= 0;
670 port_number
= port
->number
- port
->serial
->minor
;
672 dbg("%s - sending TI_CLOSE_PORT", __func__
);
673 status
= ti_command_out_sync(tdev
, TI_CLOSE_PORT
,
674 (__u8
)(TI_UART1_PORT
+ port_number
), 0, NULL
, 0);
677 "%s - cannot send close port command, %d\n"
680 /* if mutex_lock is interrupted, continue anyway */
681 do_unlock
= !mutex_lock_interruptible(&tdev
->td_open_close_lock
);
682 --tport
->tp_tdev
->td_open_port_count
;
683 if (tport
->tp_tdev
->td_open_port_count
<= 0) {
684 /* last port is closed, shut down interrupt urb */
685 usb_kill_urb(port
->serial
->port
[0]->interrupt_in_urb
);
686 tport
->tp_tdev
->td_open_port_count
= 0;
689 mutex_unlock(&tdev
->td_open_close_lock
);
691 dbg("%s - exit", __func__
);
695 static int ti_write(struct tty_struct
*tty
, struct usb_serial_port
*port
,
696 const unsigned char *data
, int count
)
698 struct ti_port
*tport
= usb_get_serial_port_data(port
);
701 dbg("%s - port %d", __func__
, port
->number
);
704 dbg("%s - write request of 0 bytes", __func__
);
708 if (tport
== NULL
|| !tport
->tp_is_open
)
711 spin_lock_irqsave(&tport
->tp_lock
, flags
);
712 count
= ti_buf_put(tport
->tp_write_buf
, data
, count
);
713 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
721 static int ti_write_room(struct tty_struct
*tty
)
723 struct usb_serial_port
*port
= tty
->driver_data
;
724 struct ti_port
*tport
= usb_get_serial_port_data(port
);
728 dbg("%s - port %d", __func__
, port
->number
);
733 spin_lock_irqsave(&tport
->tp_lock
, flags
);
734 room
= ti_buf_space_avail(tport
->tp_write_buf
);
735 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
737 dbg("%s - returns %d", __func__
, room
);
742 static int ti_chars_in_buffer(struct tty_struct
*tty
)
744 struct usb_serial_port
*port
= tty
->driver_data
;
745 struct ti_port
*tport
= usb_get_serial_port_data(port
);
749 dbg("%s - port %d", __func__
, port
->number
);
754 spin_lock_irqsave(&tport
->tp_lock
, flags
);
755 chars
= ti_buf_data_avail(tport
->tp_write_buf
);
756 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
758 dbg("%s - returns %d", __func__
, chars
);
763 static void ti_throttle(struct tty_struct
*tty
)
765 struct usb_serial_port
*port
= tty
->driver_data
;
766 struct ti_port
*tport
= usb_get_serial_port_data(port
);
768 dbg("%s - port %d", __func__
, port
->number
);
773 if (I_IXOFF(tty
) || C_CRTSCTS(tty
))
774 ti_stop_read(tport
, tty
);
779 static void ti_unthrottle(struct tty_struct
*tty
)
781 struct usb_serial_port
*port
= tty
->driver_data
;
782 struct ti_port
*tport
= usb_get_serial_port_data(port
);
785 dbg("%s - port %d", __func__
, port
->number
);
790 if (I_IXOFF(tty
) || C_CRTSCTS(tty
)) {
791 status
= ti_restart_read(tport
, tty
);
793 dev_err(&port
->dev
, "%s - cannot restart read, %d\n",
799 static int ti_ioctl(struct tty_struct
*tty
, struct file
*file
,
800 unsigned int cmd
, unsigned long arg
)
802 struct usb_serial_port
*port
= tty
->driver_data
;
803 struct ti_port
*tport
= usb_get_serial_port_data(port
);
804 struct async_icount cnow
;
805 struct async_icount cprev
;
807 dbg("%s - port %d, cmd = 0x%04X", __func__
, port
->number
, cmd
);
814 dbg("%s - (%d) TIOCGSERIAL", __func__
, port
->number
);
815 return ti_get_serial_info(tport
,
816 (struct serial_struct __user
*)arg
);
818 dbg("%s - (%d) TIOCSSERIAL", __func__
, port
->number
);
819 return ti_set_serial_info(tty
, tport
,
820 (struct serial_struct __user
*)arg
);
822 dbg("%s - (%d) TIOCMIWAIT", __func__
, port
->number
);
823 cprev
= tport
->tp_icount
;
825 interruptible_sleep_on(&tport
->tp_msr_wait
);
826 if (signal_pending(current
))
828 cnow
= tport
->tp_icount
;
829 if (cnow
.rng
== cprev
.rng
&& cnow
.dsr
== cprev
.dsr
&&
830 cnow
.dcd
== cprev
.dcd
&& cnow
.cts
== cprev
.cts
)
831 return -EIO
; /* no change => error */
832 if (((arg
& TIOCM_RNG
) && (cnow
.rng
!= cprev
.rng
)) ||
833 ((arg
& TIOCM_DSR
) && (cnow
.dsr
!= cprev
.dsr
)) ||
834 ((arg
& TIOCM_CD
) && (cnow
.dcd
!= cprev
.dcd
)) ||
835 ((arg
& TIOCM_CTS
) && (cnow
.cts
!= cprev
.cts
)))
841 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
842 __func__
, port
->number
,
843 tport
->tp_icount
.rx
, tport
->tp_icount
.tx
);
844 if (copy_to_user((void __user
*)arg
, &tport
->tp_icount
,
845 sizeof(tport
->tp_icount
)))
853 static void ti_set_termios(struct tty_struct
*tty
,
854 struct usb_serial_port
*port
, struct ktermios
*old_termios
)
856 struct ti_port
*tport
= usb_get_serial_port_data(port
);
857 struct ti_uart_config
*config
;
858 tcflag_t cflag
, iflag
;
861 int port_number
= port
->number
- port
->serial
->minor
;
864 dbg("%s - port %d", __func__
, port
->number
);
866 cflag
= tty
->termios
->c_cflag
;
867 iflag
= tty
->termios
->c_iflag
;
869 dbg("%s - cflag %08x, iflag %08x", __func__
, cflag
, iflag
);
870 dbg("%s - old clfag %08x, old iflag %08x", __func__
,
871 old_termios
->c_cflag
, old_termios
->c_iflag
);
876 config
= kmalloc(sizeof(*config
), GFP_KERNEL
);
878 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
884 /* these flags must be set */
885 config
->wFlags
|= TI_UART_ENABLE_MS_INTS
;
886 config
->wFlags
|= TI_UART_ENABLE_AUTO_START_DMA
;
887 config
->bUartMode
= (__u8
)(tport
->tp_uart_mode
);
889 switch (cflag
& CSIZE
) {
891 config
->bDataBits
= TI_UART_5_DATA_BITS
;
894 config
->bDataBits
= TI_UART_6_DATA_BITS
;
897 config
->bDataBits
= TI_UART_7_DATA_BITS
;
901 config
->bDataBits
= TI_UART_8_DATA_BITS
;
905 /* CMSPAR isn't supported by this driver */
906 tty
->termios
->c_cflag
&= ~CMSPAR
;
908 if (cflag
& PARENB
) {
909 if (cflag
& PARODD
) {
910 config
->wFlags
|= TI_UART_ENABLE_PARITY_CHECKING
;
911 config
->bParity
= TI_UART_ODD_PARITY
;
913 config
->wFlags
|= TI_UART_ENABLE_PARITY_CHECKING
;
914 config
->bParity
= TI_UART_EVEN_PARITY
;
917 config
->wFlags
&= ~TI_UART_ENABLE_PARITY_CHECKING
;
918 config
->bParity
= TI_UART_NO_PARITY
;
922 config
->bStopBits
= TI_UART_2_STOP_BITS
;
924 config
->bStopBits
= TI_UART_1_STOP_BITS
;
926 if (cflag
& CRTSCTS
) {
927 /* RTS flow control must be off to drop RTS for baud rate B0 */
928 if ((cflag
& CBAUD
) != B0
)
929 config
->wFlags
|= TI_UART_ENABLE_RTS_IN
;
930 config
->wFlags
|= TI_UART_ENABLE_CTS_OUT
;
933 ti_restart_read(tport
, tty
);
936 if (I_IXOFF(tty
) || I_IXON(tty
)) {
937 config
->cXon
= START_CHAR(tty
);
938 config
->cXoff
= STOP_CHAR(tty
);
941 config
->wFlags
|= TI_UART_ENABLE_X_IN
;
943 ti_restart_read(tport
, tty
);
946 config
->wFlags
|= TI_UART_ENABLE_X_OUT
;
949 baud
= tty_get_baud_rate(tty
);
952 if (tport
->tp_tdev
->td_is_3410
)
953 config
->wBaudRate
= (__u16
)((923077 + baud
/2) / baud
);
955 config
->wBaudRate
= (__u16
)((461538 + baud
/2) / baud
);
957 /* FIXME: Should calculate resulting baud here and report it back */
958 if ((cflag
& CBAUD
) != B0
)
959 tty_encode_baud_rate(tty
, baud
, baud
);
961 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
962 __func__
, baud
, config
->wBaudRate
, config
->wFlags
, config
->bDataBits
, config
->bParity
, config
->bStopBits
, config
->cXon
, config
->cXoff
, config
->bUartMode
);
964 cpu_to_be16s(&config
->wBaudRate
);
965 cpu_to_be16s(&config
->wFlags
);
967 status
= ti_command_out_sync(tport
->tp_tdev
, TI_SET_CONFIG
,
968 (__u8
)(TI_UART1_PORT
+ port_number
), 0, (__u8
*)config
,
971 dev_err(&port
->dev
, "%s - cannot set config on port %d, %d\n",
972 __func__
, port_number
, status
);
974 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
975 mcr
= tport
->tp_shadow_mcr
;
976 /* if baud rate is B0, clear RTS and DTR */
977 if ((cflag
& CBAUD
) == B0
)
978 mcr
&= ~(TI_MCR_DTR
| TI_MCR_RTS
);
979 status
= ti_set_mcr(tport
, mcr
);
982 "%s - cannot set modem control on port %d, %d\n",
983 __func__
, port_number
, status
);
989 static int ti_tiocmget(struct tty_struct
*tty
, struct file
*file
)
991 struct usb_serial_port
*port
= tty
->driver_data
;
992 struct ti_port
*tport
= usb_get_serial_port_data(port
);
998 dbg("%s - port %d", __func__
, port
->number
);
1003 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1004 msr
= tport
->tp_msr
;
1005 mcr
= tport
->tp_shadow_mcr
;
1006 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1008 result
= ((mcr
& TI_MCR_DTR
) ? TIOCM_DTR
: 0)
1009 | ((mcr
& TI_MCR_RTS
) ? TIOCM_RTS
: 0)
1010 | ((mcr
& TI_MCR_LOOP
) ? TIOCM_LOOP
: 0)
1011 | ((msr
& TI_MSR_CTS
) ? TIOCM_CTS
: 0)
1012 | ((msr
& TI_MSR_CD
) ? TIOCM_CAR
: 0)
1013 | ((msr
& TI_MSR_RI
) ? TIOCM_RI
: 0)
1014 | ((msr
& TI_MSR_DSR
) ? TIOCM_DSR
: 0);
1016 dbg("%s - 0x%04X", __func__
, result
);
1022 static int ti_tiocmset(struct tty_struct
*tty
, struct file
*file
,
1023 unsigned int set
, unsigned int clear
)
1025 struct usb_serial_port
*port
= tty
->driver_data
;
1026 struct ti_port
*tport
= usb_get_serial_port_data(port
);
1028 unsigned long flags
;
1030 dbg("%s - port %d", __func__
, port
->number
);
1035 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1036 mcr
= tport
->tp_shadow_mcr
;
1038 if (set
& TIOCM_RTS
)
1040 if (set
& TIOCM_DTR
)
1042 if (set
& TIOCM_LOOP
)
1045 if (clear
& TIOCM_RTS
)
1047 if (clear
& TIOCM_DTR
)
1049 if (clear
& TIOCM_LOOP
)
1050 mcr
&= ~TI_MCR_LOOP
;
1051 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1053 return ti_set_mcr(tport
, mcr
);
1057 static void ti_break(struct tty_struct
*tty
, int break_state
)
1059 struct usb_serial_port
*port
= tty
->driver_data
;
1060 struct ti_port
*tport
= usb_get_serial_port_data(port
);
1063 dbg("%s - state = %d", __func__
, break_state
);
1068 ti_drain(tport
, (tport
->tp_closing_wait
*HZ
)/100, 0);
1070 status
= ti_write_byte(tport
->tp_tdev
,
1071 tport
->tp_uart_base_addr
+ TI_UART_OFFSET_LCR
,
1072 TI_LCR_BREAK
, break_state
== -1 ? TI_LCR_BREAK
: 0);
1075 dbg("%s - error setting break, %d", __func__
, status
);
1079 static void ti_interrupt_callback(struct urb
*urb
)
1081 struct ti_device
*tdev
= urb
->context
;
1082 struct usb_serial_port
*port
;
1083 struct usb_serial
*serial
= tdev
->td_serial
;
1084 struct ti_port
*tport
;
1085 struct device
*dev
= &urb
->dev
->dev
;
1086 unsigned char *data
= urb
->transfer_buffer
;
1087 int length
= urb
->actual_length
;
1090 int status
= urb
->status
;
1094 dbg("%s", __func__
);
1102 dbg("%s - urb shutting down, %d", __func__
, status
);
1103 tdev
->td_urb_error
= 1;
1106 dev_err(dev
, "%s - nonzero urb status, %d\n",
1108 tdev
->td_urb_error
= 1;
1113 dbg("%s - bad packet size, %d", __func__
, length
);
1117 if (data
[0] == TI_CODE_HARDWARE_ERROR
) {
1118 dev_err(dev
, "%s - hardware error, %d\n", __func__
, data
[1]);
1122 port_number
= TI_GET_PORT_FROM_CODE(data
[0]);
1123 function
= TI_GET_FUNC_FROM_CODE(data
[0]);
1125 dbg("%s - port_number %d, function %d, data 0x%02X",
1126 __func__
, port_number
, function
, data
[1]);
1128 if (port_number
>= serial
->num_ports
) {
1129 dev_err(dev
, "%s - bad port number, %d\n",
1130 __func__
, port_number
);
1134 port
= serial
->port
[port_number
];
1136 tport
= usb_get_serial_port_data(port
);
1141 case TI_CODE_DATA_ERROR
:
1142 dev_err(dev
, "%s - DATA ERROR, port %d, data 0x%02X\n",
1143 __func__
, port_number
, data
[1]);
1146 case TI_CODE_MODEM_STATUS
:
1148 dbg("%s - port %d, msr 0x%02X", __func__
, port_number
, msr
);
1149 ti_handle_new_msr(tport
, msr
);
1153 dev_err(dev
, "%s - unknown interrupt code, 0x%02X\n",
1159 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
1161 dev_err(dev
, "%s - resubmit interrupt urb failed, %d\n",
1166 static void ti_bulk_in_callback(struct urb
*urb
)
1168 struct ti_port
*tport
= urb
->context
;
1169 struct usb_serial_port
*port
= tport
->tp_port
;
1170 struct device
*dev
= &urb
->dev
->dev
;
1171 int status
= urb
->status
;
1173 struct tty_struct
*tty
;
1175 dbg("%s", __func__
);
1183 dbg("%s - urb shutting down, %d", __func__
, status
);
1184 tport
->tp_tdev
->td_urb_error
= 1;
1185 wake_up_interruptible(&tport
->tp_write_wait
);
1188 dev_err(dev
, "%s - nonzero urb status, %d\n",
1190 tport
->tp_tdev
->td_urb_error
= 1;
1191 wake_up_interruptible(&tport
->tp_write_wait
);
1194 if (status
== -EPIPE
)
1198 dev_err(dev
, "%s - stopping read!\n", __func__
);
1202 tty
= tty_port_tty_get(&port
->port
);
1204 if (urb
->actual_length
) {
1205 usb_serial_debug_data(debug
, dev
, __func__
,
1206 urb
->actual_length
, urb
->transfer_buffer
);
1208 if (!tport
->tp_is_open
)
1209 dbg("%s - port closed, dropping data",
1212 ti_recv(&urb
->dev
->dev
, tty
,
1213 urb
->transfer_buffer
,
1214 urb
->actual_length
);
1215 spin_lock(&tport
->tp_lock
);
1216 tport
->tp_icount
.rx
+= urb
->actual_length
;
1217 spin_unlock(&tport
->tp_lock
);
1223 /* continue to read unless stopping */
1224 spin_lock(&tport
->tp_lock
);
1225 if (tport
->tp_read_urb_state
== TI_READ_URB_RUNNING
) {
1226 urb
->dev
= port
->serial
->dev
;
1227 retval
= usb_submit_urb(urb
, GFP_ATOMIC
);
1228 } else if (tport
->tp_read_urb_state
== TI_READ_URB_STOPPING
) {
1229 tport
->tp_read_urb_state
= TI_READ_URB_STOPPED
;
1231 spin_unlock(&tport
->tp_lock
);
1233 dev_err(dev
, "%s - resubmit read urb failed, %d\n",
1238 static void ti_bulk_out_callback(struct urb
*urb
)
1240 struct ti_port
*tport
= urb
->context
;
1241 struct usb_serial_port
*port
= tport
->tp_port
;
1242 struct device
*dev
= &urb
->dev
->dev
;
1243 int status
= urb
->status
;
1245 dbg("%s - port %d", __func__
, port
->number
);
1247 tport
->tp_write_urb_in_use
= 0;
1255 dbg("%s - urb shutting down, %d", __func__
, status
);
1256 tport
->tp_tdev
->td_urb_error
= 1;
1257 wake_up_interruptible(&tport
->tp_write_wait
);
1260 dev_err(dev
, "%s - nonzero urb status, %d\n",
1262 tport
->tp_tdev
->td_urb_error
= 1;
1263 wake_up_interruptible(&tport
->tp_write_wait
);
1266 /* send any buffered data */
1271 static void ti_recv(struct device
*dev
, struct tty_struct
*tty
,
1272 unsigned char *data
, int length
)
1277 cnt
= tty_buffer_request_room(tty
, length
);
1279 dev_err(dev
, "%s - dropping data, %d bytes lost\n",
1280 __func__
, length
- cnt
);
1284 tty_insert_flip_string(tty
, data
, cnt
);
1285 tty_flip_buffer_push(tty
);
1288 } while (length
> 0);
1293 static void ti_send(struct ti_port
*tport
)
1296 struct usb_serial_port
*port
= tport
->tp_port
;
1297 struct tty_struct
*tty
= tty_port_tty_get(&port
->port
); /* FIXME */
1298 unsigned long flags
;
1301 dbg("%s - port %d", __func__
, port
->number
);
1303 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1305 if (tport
->tp_write_urb_in_use
)
1308 count
= ti_buf_get(tport
->tp_write_buf
,
1309 port
->write_urb
->transfer_buffer
,
1310 port
->bulk_out_size
);
1315 tport
->tp_write_urb_in_use
= 1;
1317 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1319 usb_serial_debug_data(debug
, &port
->dev
, __func__
, count
,
1320 port
->write_urb
->transfer_buffer
);
1322 usb_fill_bulk_urb(port
->write_urb
, port
->serial
->dev
,
1323 usb_sndbulkpipe(port
->serial
->dev
,
1324 port
->bulk_out_endpointAddress
),
1325 port
->write_urb
->transfer_buffer
, count
,
1326 ti_bulk_out_callback
, tport
);
1328 result
= usb_submit_urb(port
->write_urb
, GFP_ATOMIC
);
1330 dev_err(&port
->dev
, "%s - submit write urb failed, %d\n",
1332 tport
->tp_write_urb_in_use
= 0;
1333 /* TODO: reschedule ti_send */
1335 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1336 tport
->tp_icount
.tx
+= count
;
1337 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1340 /* more room in the buffer for new writes, wakeup */
1344 wake_up_interruptible(&tport
->tp_write_wait
);
1347 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1353 static int ti_set_mcr(struct ti_port
*tport
, unsigned int mcr
)
1355 unsigned long flags
;
1358 status
= ti_write_byte(tport
->tp_tdev
,
1359 tport
->tp_uart_base_addr
+ TI_UART_OFFSET_MCR
,
1360 TI_MCR_RTS
| TI_MCR_DTR
| TI_MCR_LOOP
, mcr
);
1362 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1364 tport
->tp_shadow_mcr
= mcr
;
1365 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1371 static int ti_get_lsr(struct ti_port
*tport
)
1374 struct ti_device
*tdev
= tport
->tp_tdev
;
1375 struct usb_serial_port
*port
= tport
->tp_port
;
1376 int port_number
= port
->number
- port
->serial
->minor
;
1377 struct ti_port_status
*data
;
1379 dbg("%s - port %d", __func__
, port
->number
);
1381 size
= sizeof(struct ti_port_status
);
1382 data
= kmalloc(size
, GFP_KERNEL
);
1384 dev_err(&port
->dev
, "%s - out of memory\n", __func__
);
1388 status
= ti_command_in_sync(tdev
, TI_GET_PORT_STATUS
,
1389 (__u8
)(TI_UART1_PORT
+port_number
), 0, (__u8
*)data
, size
);
1392 "%s - get port status command failed, %d\n",
1397 dbg("%s - lsr 0x%02X", __func__
, data
->bLSR
);
1399 tport
->tp_lsr
= data
->bLSR
;
1407 static int ti_get_serial_info(struct ti_port
*tport
,
1408 struct serial_struct __user
*ret_arg
)
1410 struct usb_serial_port
*port
= tport
->tp_port
;
1411 struct serial_struct ret_serial
;
1416 memset(&ret_serial
, 0, sizeof(ret_serial
));
1418 ret_serial
.type
= PORT_16550A
;
1419 ret_serial
.line
= port
->serial
->minor
;
1420 ret_serial
.port
= port
->number
- port
->serial
->minor
;
1421 ret_serial
.flags
= tport
->tp_flags
;
1422 ret_serial
.xmit_fifo_size
= TI_WRITE_BUF_SIZE
;
1423 ret_serial
.baud_base
= tport
->tp_tdev
->td_is_3410
? 921600 : 460800;
1424 ret_serial
.closing_wait
= tport
->tp_closing_wait
;
1426 if (copy_to_user(ret_arg
, &ret_serial
, sizeof(*ret_arg
)))
1433 static int ti_set_serial_info(struct tty_struct
*tty
, struct ti_port
*tport
,
1434 struct serial_struct __user
*new_arg
)
1436 struct serial_struct new_serial
;
1438 if (copy_from_user(&new_serial
, new_arg
, sizeof(new_serial
)))
1441 tport
->tp_flags
= new_serial
.flags
& TI_SET_SERIAL_FLAGS
;
1442 tport
->tp_closing_wait
= new_serial
.closing_wait
;
1448 static void ti_handle_new_msr(struct ti_port
*tport
, __u8 msr
)
1450 struct async_icount
*icount
;
1451 struct tty_struct
*tty
;
1452 unsigned long flags
;
1454 dbg("%s - msr 0x%02X", __func__
, msr
);
1456 if (msr
& TI_MSR_DELTA_MASK
) {
1457 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1458 icount
= &tport
->tp_icount
;
1459 if (msr
& TI_MSR_DELTA_CTS
)
1461 if (msr
& TI_MSR_DELTA_DSR
)
1463 if (msr
& TI_MSR_DELTA_CD
)
1465 if (msr
& TI_MSR_DELTA_RI
)
1467 wake_up_interruptible(&tport
->tp_msr_wait
);
1468 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1471 tport
->tp_msr
= msr
& TI_MSR_MASK
;
1473 /* handle CTS flow control */
1474 tty
= tty_port_tty_get(&tport
->tp_port
->port
);
1475 if (tty
&& C_CRTSCTS(tty
)) {
1476 if (msr
& TI_MSR_CTS
) {
1477 tty
->hw_stopped
= 0;
1480 tty
->hw_stopped
= 1;
1487 static void ti_drain(struct ti_port
*tport
, unsigned long timeout
, int flush
)
1489 struct ti_device
*tdev
= tport
->tp_tdev
;
1490 struct usb_serial_port
*port
= tport
->tp_port
;
1493 dbg("%s - port %d", __func__
, port
->number
);
1495 spin_lock_irq(&tport
->tp_lock
);
1497 /* wait for data to drain from the buffer */
1498 tdev
->td_urb_error
= 0;
1499 init_waitqueue_entry(&wait
, current
);
1500 add_wait_queue(&tport
->tp_write_wait
, &wait
);
1502 set_current_state(TASK_INTERRUPTIBLE
);
1503 if (ti_buf_data_avail(tport
->tp_write_buf
) == 0
1504 || timeout
== 0 || signal_pending(current
)
1505 || tdev
->td_urb_error
1506 || port
->serial
->disconnected
) /* disconnect */
1508 spin_unlock_irq(&tport
->tp_lock
);
1509 timeout
= schedule_timeout(timeout
);
1510 spin_lock_irq(&tport
->tp_lock
);
1512 set_current_state(TASK_RUNNING
);
1513 remove_wait_queue(&tport
->tp_write_wait
, &wait
);
1515 /* flush any remaining data in the buffer */
1517 ti_buf_clear(tport
->tp_write_buf
);
1519 spin_unlock_irq(&tport
->tp_lock
);
1521 mutex_lock(&port
->serial
->disc_mutex
);
1522 /* wait for data to drain from the device */
1523 /* wait for empty tx register, plus 20 ms */
1525 tport
->tp_lsr
&= ~TI_LSR_TX_EMPTY
;
1526 while ((long)(jiffies
- timeout
) < 0 && !signal_pending(current
)
1527 && !(tport
->tp_lsr
&TI_LSR_TX_EMPTY
) && !tdev
->td_urb_error
1528 && !port
->serial
->disconnected
) {
1529 if (ti_get_lsr(tport
))
1531 mutex_unlock(&port
->serial
->disc_mutex
);
1532 msleep_interruptible(20);
1533 mutex_lock(&port
->serial
->disc_mutex
);
1535 mutex_unlock(&port
->serial
->disc_mutex
);
1539 static void ti_stop_read(struct ti_port
*tport
, struct tty_struct
*tty
)
1541 unsigned long flags
;
1543 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1545 if (tport
->tp_read_urb_state
== TI_READ_URB_RUNNING
)
1546 tport
->tp_read_urb_state
= TI_READ_URB_STOPPING
;
1548 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1552 static int ti_restart_read(struct ti_port
*tport
, struct tty_struct
*tty
)
1556 unsigned long flags
;
1558 spin_lock_irqsave(&tport
->tp_lock
, flags
);
1560 if (tport
->tp_read_urb_state
== TI_READ_URB_STOPPED
) {
1561 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
1562 urb
= tport
->tp_port
->read_urb
;
1563 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1564 urb
->complete
= ti_bulk_in_callback
;
1565 urb
->context
= tport
;
1566 urb
->dev
= tport
->tp_port
->serial
->dev
;
1567 status
= usb_submit_urb(urb
, GFP_KERNEL
);
1569 tport
->tp_read_urb_state
= TI_READ_URB_RUNNING
;
1570 spin_unlock_irqrestore(&tport
->tp_lock
, flags
);
1577 static int ti_command_out_sync(struct ti_device
*tdev
, __u8 command
,
1578 __u16 moduleid
, __u16 value
, __u8
*data
, int size
)
1582 status
= usb_control_msg(tdev
->td_serial
->dev
,
1583 usb_sndctrlpipe(tdev
->td_serial
->dev
, 0), command
,
1584 (USB_TYPE_VENDOR
| USB_RECIP_DEVICE
| USB_DIR_OUT
),
1585 value
, moduleid
, data
, size
, 1000);
1597 static int ti_command_in_sync(struct ti_device
*tdev
, __u8 command
,
1598 __u16 moduleid
, __u16 value
, __u8
*data
, int size
)
1602 status
= usb_control_msg(tdev
->td_serial
->dev
,
1603 usb_rcvctrlpipe(tdev
->td_serial
->dev
, 0), command
,
1604 (USB_TYPE_VENDOR
| USB_RECIP_DEVICE
| USB_DIR_IN
),
1605 value
, moduleid
, data
, size
, 1000);
1617 static int ti_write_byte(struct ti_device
*tdev
, unsigned long addr
,
1618 __u8 mask
, __u8 byte
)
1622 struct ti_write_data_bytes
*data
;
1623 struct device
*dev
= &tdev
->td_serial
->dev
->dev
;
1625 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1626 __func__
, addr
, mask
, byte
);
1628 size
= sizeof(struct ti_write_data_bytes
) + 2;
1629 data
= kmalloc(size
, GFP_KERNEL
);
1631 dev_err(dev
, "%s - out of memory\n", __func__
);
1635 data
->bAddrType
= TI_RW_DATA_ADDR_XDATA
;
1636 data
->bDataType
= TI_RW_DATA_BYTE
;
1637 data
->bDataCounter
= 1;
1638 data
->wBaseAddrHi
= cpu_to_be16(addr
>>16);
1639 data
->wBaseAddrLo
= cpu_to_be16(addr
);
1640 data
->bData
[0] = mask
;
1641 data
->bData
[1] = byte
;
1643 status
= ti_command_out_sync(tdev
, TI_WRITE_DATA
, TI_RAM_PORT
, 0,
1644 (__u8
*)data
, size
);
1647 dev_err(dev
, "%s - failed, %d\n", __func__
, status
);
1654 static int ti_do_download(struct usb_device
*dev
, int pipe
,
1655 u8
*buffer
, int size
)
1660 struct ti_firmware_header
*header
;
1664 for (pos
= sizeof(struct ti_firmware_header
); pos
< size
; pos
++)
1665 cs
= (__u8
)(cs
+ buffer
[pos
]);
1667 header
= (struct ti_firmware_header
*)buffer
;
1668 header
->wLength
= cpu_to_le16((__u16
)(size
1669 - sizeof(struct ti_firmware_header
)));
1670 header
->bCheckSum
= cs
;
1672 dbg("%s - downloading firmware", __func__
);
1673 for (pos
= 0; pos
< size
; pos
+= done
) {
1674 len
= min(size
- pos
, TI_DOWNLOAD_MAX_PACKET_SIZE
);
1675 status
= usb_bulk_msg(dev
, pipe
, buffer
+ pos
, len
,
1683 static int ti_download_firmware(struct ti_device
*tdev
)
1688 struct usb_device
*dev
= tdev
->td_serial
->dev
;
1689 unsigned int pipe
= usb_sndbulkpipe(dev
,
1690 tdev
->td_serial
->port
[0]->bulk_out_endpointAddress
);
1691 const struct firmware
*fw_p
;
1694 /* try ID specific firmware first, then try generic firmware */
1695 sprintf(buf
, "ti_usb-v%04x-p%04x.fw", dev
->descriptor
.idVendor
,
1696 dev
->descriptor
.idProduct
);
1697 if ((status
= request_firmware(&fw_p
, buf
, &dev
->dev
)) != 0) {
1699 if (dev
->descriptor
.idVendor
== MTS_VENDOR_ID
) {
1700 switch (dev
->descriptor
.idProduct
) {
1701 case MTS_CDMA_PRODUCT_ID
:
1702 strcpy(buf
, "mts_cdma.fw");
1704 case MTS_GSM_PRODUCT_ID
:
1705 strcpy(buf
, "mts_gsm.fw");
1707 case MTS_EDGE_PRODUCT_ID
:
1708 strcpy(buf
, "mts_edge.fw");
1712 if (buf
[0] == '\0') {
1713 if (tdev
->td_is_3410
)
1714 strcpy(buf
, "ti_3410.fw");
1716 strcpy(buf
, "ti_5052.fw");
1718 status
= request_firmware(&fw_p
, buf
, &dev
->dev
);
1721 dev_err(&dev
->dev
, "%s - firmware not found\n", __func__
);
1724 if (fw_p
->size
> TI_FIRMWARE_BUF_SIZE
) {
1725 dev_err(&dev
->dev
, "%s - firmware too large\n", __func__
);
1729 buffer_size
= TI_FIRMWARE_BUF_SIZE
+ sizeof(struct ti_firmware_header
);
1730 buffer
= kmalloc(buffer_size
, GFP_KERNEL
);
1732 memcpy(buffer
, fw_p
->data
, fw_p
->size
);
1733 memset(buffer
+ fw_p
->size
, 0xff, buffer_size
- fw_p
->size
);
1734 status
= ti_do_download(dev
, pipe
, buffer
, fw_p
->size
);
1739 release_firmware(fw_p
);
1741 dev_err(&dev
->dev
, "%s - error downloading firmware, %d\n",
1746 dbg("%s - download successful", __func__
);
1752 /* Circular Buffer Functions */
1757 * Allocate a circular buffer and all associated memory.
1760 static struct circ_buf
*ti_buf_alloc(void)
1762 struct circ_buf
*cb
;
1764 cb
= kmalloc(sizeof(struct circ_buf
), GFP_KERNEL
);
1768 cb
->buf
= kmalloc(TI_WRITE_BUF_SIZE
, GFP_KERNEL
);
1769 if (cb
->buf
== NULL
) {
1783 * Free the buffer and all associated memory.
1786 static void ti_buf_free(struct circ_buf
*cb
)
1796 * Clear out all data in the circular buffer.
1799 static void ti_buf_clear(struct circ_buf
*cb
)
1801 cb
->head
= cb
->tail
= 0;
1808 * Return the number of bytes of data available in the circular
1812 static int ti_buf_data_avail(struct circ_buf
*cb
)
1814 return CIRC_CNT(cb
->head
, cb
->tail
, TI_WRITE_BUF_SIZE
);
1819 * ti_buf_space_avail
1821 * Return the number of bytes of space available in the circular
1825 static int ti_buf_space_avail(struct circ_buf
*cb
)
1827 return CIRC_SPACE(cb
->head
, cb
->tail
, TI_WRITE_BUF_SIZE
);
1834 * Copy data data from a user buffer and put it into the circular buffer.
1835 * Restrict to the amount of space available.
1837 * Return the number of bytes copied.
1840 static int ti_buf_put(struct circ_buf
*cb
, const char *buf
, int count
)
1845 c
= CIRC_SPACE_TO_END(cb
->head
, cb
->tail
, TI_WRITE_BUF_SIZE
);
1850 memcpy(cb
->buf
+ cb
->head
, buf
, c
);
1851 cb
->head
= (cb
->head
+ c
) & (TI_WRITE_BUF_SIZE
-1);
1864 * Get data from the circular buffer and copy to the given buffer.
1865 * Restrict to the amount of data available.
1867 * Return the number of bytes copied.
1870 static int ti_buf_get(struct circ_buf
*cb
, char *buf
, int count
)
1875 c
= CIRC_CNT_TO_END(cb
->head
, cb
->tail
, TI_WRITE_BUF_SIZE
);
1880 memcpy(buf
, cb
->buf
+ cb
->tail
, c
);
1881 cb
->tail
= (cb
->tail
+ c
) & (TI_WRITE_BUF_SIZE
-1);