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_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
44 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
46 #define TI_FIRMWARE_BUF_SIZE 16284
48 #define TI_WRITE_BUF_SIZE 1024
50 #define TI_TRANSFER_TIMEOUT 2
52 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
54 /* supported setserial flags */
55 #define TI_SET_SERIAL_FLAGS 0
58 #define TI_READ_URB_RUNNING 0
59 #define TI_READ_URB_STOPPING 1
60 #define TI_READ_URB_STOPPED 2
62 #define TI_EXTRA_VID_PID_COUNT 5
71 __u8 tp_uart_mode; /* 232 or 485 modes */
72 unsigned int tp_uart_base_addr;
74 wait_queue_head_t tp_write_wait;
75 struct ti_device *tp_tdev;
76 struct usb_serial_port *tp_port;
78 int tp_read_urb_state;
79 int tp_write_urb_in_use;
80 struct kfifo write_fifo;
84 struct mutex td_open_close_lock;
85 int td_open_port_count;
86 struct usb_serial *td_serial;
92 /* Function Declarations */
94 static int ti_startup(struct usb_serial *serial);
95 static void ti_release(struct usb_serial *serial);
96 static int ti_port_probe(struct usb_serial_port *port);
97 static int ti_port_remove(struct usb_serial_port *port);
98 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
99 static void ti_close(struct usb_serial_port *port);
100 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
101 const unsigned char *data, int count);
102 static int ti_write_room(struct tty_struct *tty);
103 static int ti_chars_in_buffer(struct tty_struct *tty);
104 static bool ti_tx_empty(struct usb_serial_port *port);
105 static void ti_throttle(struct tty_struct *tty);
106 static void ti_unthrottle(struct tty_struct *tty);
107 static int ti_ioctl(struct tty_struct *tty,
108 unsigned int cmd, unsigned long arg);
109 static void ti_set_termios(struct tty_struct *tty,
110 struct usb_serial_port *port, struct ktermios *old_termios);
111 static int ti_tiocmget(struct tty_struct *tty);
112 static int ti_tiocmset(struct tty_struct *tty,
113 unsigned int set, unsigned int clear);
114 static void ti_break(struct tty_struct *tty, int break_state);
115 static void ti_interrupt_callback(struct urb *urb);
116 static void ti_bulk_in_callback(struct urb *urb);
117 static void ti_bulk_out_callback(struct urb *urb);
119 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
121 static void ti_send(struct ti_port *tport);
122 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
123 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
124 static int ti_get_serial_info(struct ti_port *tport,
125 struct serial_struct __user *ret_arg);
126 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
127 struct serial_struct __user *new_arg);
128 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
130 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
131 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
133 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
134 __u16 moduleid, __u16 value, __u8 *data, int size);
135 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
136 __u16 moduleid, __u16 value, __u8 *data, int size);
138 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
139 unsigned long addr, __u8 mask, __u8 byte);
141 static int ti_download_firmware(struct ti_device *tdev);
146 /* module parameters */
147 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
148 static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
149 static unsigned int vendor_3410_count;
150 static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
151 static unsigned int product_3410_count;
152 static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
153 static unsigned int vendor_5052_count;
154 static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
155 static unsigned int product_5052_count;
157 /* supported devices */
158 /* the array dimension is the number of default entries plus */
159 /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
161 static struct usb_device_id ti_id_table_3410[15+TI_EXTRA_VID_PID_COUNT+1] = {
162 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
163 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
164 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
165 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
166 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
167 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
168 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
169 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
170 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
171 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
172 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
173 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
174 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
175 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
176 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
177 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
180 static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
181 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
182 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
183 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
184 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
187 static struct usb_device_id ti_id_table_combined[19+2*TI_EXTRA_VID_PID_COUNT+1] = {
188 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
189 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
190 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
191 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
192 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
193 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
194 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
195 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
196 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
197 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
198 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
199 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
200 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
201 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
202 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
203 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
204 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
205 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
206 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
207 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
211 static struct usb_serial_driver ti_1port_device = {
213 .owner = THIS_MODULE,
214 .name = "ti_usb_3410_5052_1",
216 .description = "TI USB 3410 1 port adapter",
217 .id_table = ti_id_table_3410,
219 .attach = ti_startup,
220 .release = ti_release,
221 .port_probe = ti_port_probe,
222 .port_remove = ti_port_remove,
226 .write_room = ti_write_room,
227 .chars_in_buffer = ti_chars_in_buffer,
228 .tx_empty = ti_tx_empty,
229 .throttle = ti_throttle,
230 .unthrottle = ti_unthrottle,
232 .set_termios = ti_set_termios,
233 .tiocmget = ti_tiocmget,
234 .tiocmset = ti_tiocmset,
235 .tiocmiwait = usb_serial_generic_tiocmiwait,
236 .get_icount = usb_serial_generic_get_icount,
237 .break_ctl = ti_break,
238 .read_int_callback = ti_interrupt_callback,
239 .read_bulk_callback = ti_bulk_in_callback,
240 .write_bulk_callback = ti_bulk_out_callback,
243 static struct usb_serial_driver ti_2port_device = {
245 .owner = THIS_MODULE,
246 .name = "ti_usb_3410_5052_2",
248 .description = "TI USB 5052 2 port adapter",
249 .id_table = ti_id_table_5052,
251 .attach = ti_startup,
252 .release = ti_release,
253 .port_probe = ti_port_probe,
254 .port_remove = ti_port_remove,
258 .write_room = ti_write_room,
259 .chars_in_buffer = ti_chars_in_buffer,
260 .tx_empty = ti_tx_empty,
261 .throttle = ti_throttle,
262 .unthrottle = ti_unthrottle,
264 .set_termios = ti_set_termios,
265 .tiocmget = ti_tiocmget,
266 .tiocmset = ti_tiocmset,
267 .tiocmiwait = usb_serial_generic_tiocmiwait,
268 .get_icount = usb_serial_generic_get_icount,
269 .break_ctl = ti_break,
270 .read_int_callback = ti_interrupt_callback,
271 .read_bulk_callback = ti_bulk_in_callback,
272 .write_bulk_callback = ti_bulk_out_callback,
275 static struct usb_serial_driver * const serial_drivers[] = {
276 &ti_1port_device, &ti_2port_device, NULL
281 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
282 MODULE_DESCRIPTION(TI_DRIVER_DESC);
283 MODULE_LICENSE("GPL");
285 MODULE_FIRMWARE("ti_3410.fw");
286 MODULE_FIRMWARE("ti_5052.fw");
287 MODULE_FIRMWARE("mts_cdma.fw");
288 MODULE_FIRMWARE("mts_gsm.fw");
289 MODULE_FIRMWARE("mts_edge.fw");
290 MODULE_FIRMWARE("mts_mt9234mu.fw");
291 MODULE_FIRMWARE("mts_mt9234zba.fw");
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)
319 /* insert extra vendor and product ids */
320 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
321 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
322 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
323 ti_id_table_3410[j].idVendor = vendor_3410[i];
324 ti_id_table_3410[j].idProduct = product_3410[i];
325 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
326 ti_id_table_combined[c].idVendor = vendor_3410[i];
327 ti_id_table_combined[c].idProduct = product_3410[i];
328 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
330 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
331 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
332 ti_id_table_5052[j].idVendor = vendor_5052[i];
333 ti_id_table_5052[j].idProduct = product_5052[i];
334 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
335 ti_id_table_combined[c].idVendor = vendor_5052[i];
336 ti_id_table_combined[c].idProduct = product_5052[i];
337 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
340 return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, ti_id_table_combined);
343 static void __exit ti_exit(void)
345 usb_serial_deregister_drivers(serial_drivers);
348 module_init(ti_init);
349 module_exit(ti_exit);
352 static int ti_startup(struct usb_serial *serial)
354 struct ti_device *tdev;
355 struct usb_device *dev = serial->dev;
359 "%s - product 0x%4X, num configurations %d, configuration value %d",
360 __func__, le16_to_cpu(dev->descriptor.idProduct),
361 dev->descriptor.bNumConfigurations,
362 dev->actconfig->desc.bConfigurationValue);
364 /* create device structure */
365 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
367 dev_err(&dev->dev, "%s - out of memory\n", __func__);
370 mutex_init(&tdev->td_open_close_lock);
371 tdev->td_serial = serial;
372 usb_set_serial_data(serial, tdev);
374 /* determine device type */
375 if (serial->type == &ti_1port_device)
376 tdev->td_is_3410 = 1;
377 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
378 tdev->td_is_3410 ? "3410" : "5052");
380 /* if we have only 1 configuration, download firmware */
381 if (dev->descriptor.bNumConfigurations == 1) {
382 status = ti_download_firmware(tdev);
387 /* 3410 must be reset, 5052 resets itself */
388 if (tdev->td_is_3410) {
389 msleep_interruptible(100);
390 usb_reset_device(dev);
397 /* the second configuration must be set */
398 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
399 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
400 status = status ? status : -ENODEV;
408 usb_set_serial_data(serial, NULL);
413 static void ti_release(struct usb_serial *serial)
415 struct ti_device *tdev = usb_get_serial_data(serial);
420 static int ti_port_probe(struct usb_serial_port *port)
422 struct ti_port *tport;
424 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
428 spin_lock_init(&tport->tp_lock);
429 if (port == port->serial->port[0])
430 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
432 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
433 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
434 init_waitqueue_head(&tport->tp_write_wait);
435 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, GFP_KERNEL)) {
439 tport->tp_port = port;
440 tport->tp_tdev = usb_get_serial_data(port->serial);
441 tport->tp_uart_mode = 0; /* default is RS232 */
443 usb_set_serial_port_data(port, tport);
448 static int ti_port_remove(struct usb_serial_port *port)
450 struct ti_port *tport;
452 tport = usb_get_serial_port_data(port);
453 kfifo_free(&tport->write_fifo);
459 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
461 struct ti_port *tport = usb_get_serial_port_data(port);
462 struct ti_device *tdev;
463 struct usb_device *dev;
467 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
468 TI_PIPE_TIMEOUT_ENABLE |
469 (TI_TRANSFER_TIMEOUT << 2));
474 dev = port->serial->dev;
475 tdev = tport->tp_tdev;
477 /* only one open on any port on a device at a time */
478 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
481 port_number = port->number - port->serial->minor;
484 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
486 /* start interrupt urb the first time a port is opened on this device */
487 if (tdev->td_open_port_count == 0) {
488 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
489 urb = tdev->td_serial->port[0]->interrupt_in_urb;
491 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
496 status = usb_submit_urb(urb, GFP_KERNEL);
498 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
504 ti_set_termios(tty, port, &tty->termios);
506 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
507 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
508 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
510 dev_err(&port->dev, "%s - cannot send open command, %d\n",
515 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
516 status = ti_command_out_sync(tdev, TI_START_PORT,
517 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
519 dev_err(&port->dev, "%s - cannot send start command, %d\n",
524 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
525 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
526 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
528 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
532 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
533 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
535 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
540 /* reset the data toggle on the bulk endpoints to work around bug in
541 * host controllers where things get out of sync some times */
542 usb_clear_halt(dev, port->write_urb->pipe);
543 usb_clear_halt(dev, port->read_urb->pipe);
546 ti_set_termios(tty, port, &tty->termios);
548 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
549 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
550 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
552 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
557 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
558 status = ti_command_out_sync(tdev, TI_START_PORT,
559 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
561 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
567 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
568 urb = port->read_urb;
570 dev_err(&port->dev, "%s - no read urb\n", __func__);
574 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
575 urb->context = tport;
576 status = usb_submit_urb(urb, GFP_KERNEL);
578 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
583 tport->tp_is_open = 1;
584 ++tdev->td_open_port_count;
586 port->port.drain_delay = 3;
591 if (tdev->td_open_port_count == 0)
592 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
594 mutex_unlock(&tdev->td_open_close_lock);
595 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
600 static void ti_close(struct usb_serial_port *port)
602 struct ti_device *tdev;
603 struct ti_port *tport;
609 tdev = usb_get_serial_data(port->serial);
610 tport = usb_get_serial_port_data(port);
611 if (tdev == NULL || tport == NULL)
614 tport->tp_is_open = 0;
616 usb_kill_urb(port->read_urb);
617 usb_kill_urb(port->write_urb);
618 tport->tp_write_urb_in_use = 0;
619 spin_lock_irqsave(&tport->tp_lock, flags);
620 kfifo_reset_out(&tport->write_fifo);
621 spin_unlock_irqrestore(&tport->tp_lock, flags);
623 port_number = port->number - port->serial->minor;
625 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
626 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
627 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
630 "%s - cannot send close port command, %d\n"
633 /* if mutex_lock is interrupted, continue anyway */
634 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
635 --tport->tp_tdev->td_open_port_count;
636 if (tport->tp_tdev->td_open_port_count <= 0) {
637 /* last port is closed, shut down interrupt urb */
638 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
639 tport->tp_tdev->td_open_port_count = 0;
642 mutex_unlock(&tdev->td_open_close_lock);
646 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
647 const unsigned char *data, int count)
649 struct ti_port *tport = usb_get_serial_port_data(port);
652 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
656 if (tport == NULL || !tport->tp_is_open)
659 count = kfifo_in_locked(&tport->write_fifo, data, count,
667 static int ti_write_room(struct tty_struct *tty)
669 struct usb_serial_port *port = tty->driver_data;
670 struct ti_port *tport = usb_get_serial_port_data(port);
677 spin_lock_irqsave(&tport->tp_lock, flags);
678 room = kfifo_avail(&tport->write_fifo);
679 spin_unlock_irqrestore(&tport->tp_lock, flags);
681 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
686 static int ti_chars_in_buffer(struct tty_struct *tty)
688 struct usb_serial_port *port = tty->driver_data;
689 struct ti_port *tport = usb_get_serial_port_data(port);
696 spin_lock_irqsave(&tport->tp_lock, flags);
697 chars = kfifo_len(&tport->write_fifo);
698 spin_unlock_irqrestore(&tport->tp_lock, flags);
700 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
704 static bool ti_tx_empty(struct usb_serial_port *port)
706 struct ti_port *tport = usb_get_serial_port_data(port);
710 ret = ti_get_lsr(tport, &lsr);
711 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
717 static void ti_throttle(struct tty_struct *tty)
719 struct usb_serial_port *port = tty->driver_data;
720 struct ti_port *tport = usb_get_serial_port_data(port);
725 if (I_IXOFF(tty) || C_CRTSCTS(tty))
726 ti_stop_read(tport, tty);
731 static void ti_unthrottle(struct tty_struct *tty)
733 struct usb_serial_port *port = tty->driver_data;
734 struct ti_port *tport = usb_get_serial_port_data(port);
740 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
741 status = ti_restart_read(tport, tty);
743 dev_err(&port->dev, "%s - cannot restart read, %d\n",
748 static int ti_ioctl(struct tty_struct *tty,
749 unsigned int cmd, unsigned long arg)
751 struct usb_serial_port *port = tty->driver_data;
752 struct ti_port *tport = usb_get_serial_port_data(port);
754 dev_dbg(&port->dev, "%s - cmd = 0x%04X\n", __func__, cmd);
761 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
762 return ti_get_serial_info(tport,
763 (struct serial_struct __user *)arg);
765 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
766 return ti_set_serial_info(tty, tport,
767 (struct serial_struct __user *)arg);
773 static void ti_set_termios(struct tty_struct *tty,
774 struct usb_serial_port *port, struct ktermios *old_termios)
776 struct ti_port *tport = usb_get_serial_port_data(port);
777 struct ti_uart_config *config;
778 tcflag_t cflag, iflag;
781 int port_number = port->number - port->serial->minor;
784 cflag = tty->termios.c_cflag;
785 iflag = tty->termios.c_iflag;
787 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
788 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
789 old_termios->c_cflag, old_termios->c_iflag);
794 config = kmalloc(sizeof(*config), GFP_KERNEL);
796 dev_err(&port->dev, "%s - out of memory\n", __func__);
802 /* these flags must be set */
803 config->wFlags |= TI_UART_ENABLE_MS_INTS;
804 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
805 config->bUartMode = (__u8)(tport->tp_uart_mode);
807 switch (cflag & CSIZE) {
809 config->bDataBits = TI_UART_5_DATA_BITS;
812 config->bDataBits = TI_UART_6_DATA_BITS;
815 config->bDataBits = TI_UART_7_DATA_BITS;
819 config->bDataBits = TI_UART_8_DATA_BITS;
823 /* CMSPAR isn't supported by this driver */
824 tty->termios.c_cflag &= ~CMSPAR;
826 if (cflag & PARENB) {
827 if (cflag & PARODD) {
828 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
829 config->bParity = TI_UART_ODD_PARITY;
831 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
832 config->bParity = TI_UART_EVEN_PARITY;
835 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
836 config->bParity = TI_UART_NO_PARITY;
840 config->bStopBits = TI_UART_2_STOP_BITS;
842 config->bStopBits = TI_UART_1_STOP_BITS;
844 if (cflag & CRTSCTS) {
845 /* RTS flow control must be off to drop RTS for baud rate B0 */
846 if ((cflag & CBAUD) != B0)
847 config->wFlags |= TI_UART_ENABLE_RTS_IN;
848 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
851 ti_restart_read(tport, tty);
854 if (I_IXOFF(tty) || I_IXON(tty)) {
855 config->cXon = START_CHAR(tty);
856 config->cXoff = STOP_CHAR(tty);
859 config->wFlags |= TI_UART_ENABLE_X_IN;
861 ti_restart_read(tport, tty);
864 config->wFlags |= TI_UART_ENABLE_X_OUT;
867 baud = tty_get_baud_rate(tty);
870 if (tport->tp_tdev->td_is_3410)
871 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
873 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
875 /* FIXME: Should calculate resulting baud here and report it back */
876 if ((cflag & CBAUD) != B0)
877 tty_encode_baud_rate(tty, baud, baud);
880 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
881 __func__, baud, config->wBaudRate, config->wFlags,
882 config->bDataBits, config->bParity, config->bStopBits,
883 config->cXon, config->cXoff, config->bUartMode);
885 cpu_to_be16s(&config->wBaudRate);
886 cpu_to_be16s(&config->wFlags);
888 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
889 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
892 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
893 __func__, port_number, status);
895 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
896 mcr = tport->tp_shadow_mcr;
897 /* if baud rate is B0, clear RTS and DTR */
898 if ((cflag & CBAUD) == B0)
899 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
900 status = ti_set_mcr(tport, mcr);
903 "%s - cannot set modem control on port %d, %d\n",
904 __func__, port_number, status);
910 static int ti_tiocmget(struct tty_struct *tty)
912 struct usb_serial_port *port = tty->driver_data;
913 struct ti_port *tport = usb_get_serial_port_data(port);
922 spin_lock_irqsave(&tport->tp_lock, flags);
924 mcr = tport->tp_shadow_mcr;
925 spin_unlock_irqrestore(&tport->tp_lock, flags);
927 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
928 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
929 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
930 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
931 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
932 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
933 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
935 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
941 static int ti_tiocmset(struct tty_struct *tty,
942 unsigned int set, unsigned int clear)
944 struct usb_serial_port *port = tty->driver_data;
945 struct ti_port *tport = usb_get_serial_port_data(port);
952 spin_lock_irqsave(&tport->tp_lock, flags);
953 mcr = tport->tp_shadow_mcr;
959 if (set & TIOCM_LOOP)
962 if (clear & TIOCM_RTS)
964 if (clear & TIOCM_DTR)
966 if (clear & TIOCM_LOOP)
968 spin_unlock_irqrestore(&tport->tp_lock, flags);
970 return ti_set_mcr(tport, mcr);
974 static void ti_break(struct tty_struct *tty, int break_state)
976 struct usb_serial_port *port = tty->driver_data;
977 struct ti_port *tport = usb_get_serial_port_data(port);
980 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
985 status = ti_write_byte(port, tport->tp_tdev,
986 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
987 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
990 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
994 static void ti_interrupt_callback(struct urb *urb)
996 struct ti_device *tdev = urb->context;
997 struct usb_serial_port *port;
998 struct usb_serial *serial = tdev->td_serial;
999 struct ti_port *tport;
1000 struct device *dev = &urb->dev->dev;
1001 unsigned char *data = urb->transfer_buffer;
1002 int length = urb->actual_length;
1005 int status = urb->status;
1015 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1016 tdev->td_urb_error = 1;
1019 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1020 tdev->td_urb_error = 1;
1025 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1029 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1030 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1034 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1035 function = TI_GET_FUNC_FROM_CODE(data[0]);
1037 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1038 __func__, port_number, function, data[1]);
1040 if (port_number >= serial->num_ports) {
1041 dev_err(dev, "%s - bad port number, %d\n",
1042 __func__, port_number);
1046 port = serial->port[port_number];
1048 tport = usb_get_serial_port_data(port);
1053 case TI_CODE_DATA_ERROR:
1054 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1055 __func__, port_number, data[1]);
1058 case TI_CODE_MODEM_STATUS:
1060 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1061 ti_handle_new_msr(tport, msr);
1065 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1071 retval = usb_submit_urb(urb, GFP_ATOMIC);
1073 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1078 static void ti_bulk_in_callback(struct urb *urb)
1080 struct ti_port *tport = urb->context;
1081 struct usb_serial_port *port = tport->tp_port;
1082 struct device *dev = &urb->dev->dev;
1083 int status = urb->status;
1092 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1093 tport->tp_tdev->td_urb_error = 1;
1094 wake_up_interruptible(&tport->tp_write_wait);
1097 dev_err(dev, "%s - nonzero urb status, %d\n",
1099 tport->tp_tdev->td_urb_error = 1;
1100 wake_up_interruptible(&tport->tp_write_wait);
1103 if (status == -EPIPE)
1107 dev_err(dev, "%s - stopping read!\n", __func__);
1111 if (urb->actual_length) {
1112 usb_serial_debug_data(dev, __func__, urb->actual_length,
1113 urb->transfer_buffer);
1115 if (!tport->tp_is_open)
1116 dev_dbg(dev, "%s - port closed, dropping data\n",
1119 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1120 spin_lock(&tport->tp_lock);
1121 port->icount.rx += urb->actual_length;
1122 spin_unlock(&tport->tp_lock);
1126 /* continue to read unless stopping */
1127 spin_lock(&tport->tp_lock);
1128 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1129 retval = usb_submit_urb(urb, GFP_ATOMIC);
1130 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1131 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1133 spin_unlock(&tport->tp_lock);
1135 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1140 static void ti_bulk_out_callback(struct urb *urb)
1142 struct ti_port *tport = urb->context;
1143 struct usb_serial_port *port = tport->tp_port;
1144 int status = urb->status;
1146 tport->tp_write_urb_in_use = 0;
1154 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1155 tport->tp_tdev->td_urb_error = 1;
1156 wake_up_interruptible(&tport->tp_write_wait);
1159 dev_err_console(port, "%s - nonzero urb status, %d\n",
1161 tport->tp_tdev->td_urb_error = 1;
1162 wake_up_interruptible(&tport->tp_write_wait);
1165 /* send any buffered data */
1170 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1176 cnt = tty_insert_flip_string(&port->port, data, length);
1178 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1179 __func__, length - cnt);
1183 tty_flip_buffer_push(&port->port);
1186 } while (length > 0);
1190 static void ti_send(struct ti_port *tport)
1193 struct usb_serial_port *port = tport->tp_port;
1194 unsigned long flags;
1196 spin_lock_irqsave(&tport->tp_lock, flags);
1198 if (tport->tp_write_urb_in_use)
1201 count = kfifo_out(&tport->write_fifo,
1202 port->write_urb->transfer_buffer,
1203 port->bulk_out_size);
1208 tport->tp_write_urb_in_use = 1;
1210 spin_unlock_irqrestore(&tport->tp_lock, flags);
1212 usb_serial_debug_data(&port->dev, __func__, count,
1213 port->write_urb->transfer_buffer);
1215 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1216 usb_sndbulkpipe(port->serial->dev,
1217 port->bulk_out_endpointAddress),
1218 port->write_urb->transfer_buffer, count,
1219 ti_bulk_out_callback, tport);
1221 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1223 dev_err_console(port, "%s - submit write urb failed, %d\n",
1225 tport->tp_write_urb_in_use = 0;
1226 /* TODO: reschedule ti_send */
1228 spin_lock_irqsave(&tport->tp_lock, flags);
1229 port->icount.tx += count;
1230 spin_unlock_irqrestore(&tport->tp_lock, flags);
1233 /* more room in the buffer for new writes, wakeup */
1234 tty_port_tty_wakeup(&port->port);
1236 wake_up_interruptible(&tport->tp_write_wait);
1239 spin_unlock_irqrestore(&tport->tp_lock, flags);
1244 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1246 unsigned long flags;
1249 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1250 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1251 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1253 spin_lock_irqsave(&tport->tp_lock, flags);
1255 tport->tp_shadow_mcr = mcr;
1256 spin_unlock_irqrestore(&tport->tp_lock, flags);
1262 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1265 struct ti_device *tdev = tport->tp_tdev;
1266 struct usb_serial_port *port = tport->tp_port;
1267 int port_number = port->number - port->serial->minor;
1268 struct ti_port_status *data;
1270 size = sizeof(struct ti_port_status);
1271 data = kmalloc(size, GFP_KERNEL);
1273 dev_err(&port->dev, "%s - out of memory\n", __func__);
1277 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1278 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1281 "%s - get port status command failed, %d\n",
1286 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1296 static int ti_get_serial_info(struct ti_port *tport,
1297 struct serial_struct __user *ret_arg)
1299 struct usb_serial_port *port = tport->tp_port;
1300 struct serial_struct ret_serial;
1306 cwait = port->port.closing_wait;
1307 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1308 cwait = jiffies_to_msecs(cwait) / 10;
1310 memset(&ret_serial, 0, sizeof(ret_serial));
1312 ret_serial.type = PORT_16550A;
1313 ret_serial.line = port->serial->minor;
1314 ret_serial.port = port->number - port->serial->minor;
1315 ret_serial.flags = tport->tp_flags;
1316 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1317 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1318 ret_serial.closing_wait = cwait;
1320 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1327 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1328 struct serial_struct __user *new_arg)
1330 struct serial_struct new_serial;
1333 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1336 cwait = new_serial.closing_wait;
1337 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1338 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1340 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1341 tport->tp_port->port.closing_wait = cwait;
1347 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1349 struct async_icount *icount;
1350 struct tty_struct *tty;
1351 unsigned long flags;
1353 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1355 if (msr & TI_MSR_DELTA_MASK) {
1356 spin_lock_irqsave(&tport->tp_lock, flags);
1357 icount = &tport->tp_port->icount;
1358 if (msr & TI_MSR_DELTA_CTS)
1360 if (msr & TI_MSR_DELTA_DSR)
1362 if (msr & TI_MSR_DELTA_CD)
1364 if (msr & TI_MSR_DELTA_RI)
1366 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1367 spin_unlock_irqrestore(&tport->tp_lock, flags);
1370 tport->tp_msr = msr & TI_MSR_MASK;
1372 /* handle CTS flow control */
1373 tty = tty_port_tty_get(&tport->tp_port->port);
1374 if (tty && C_CRTSCTS(tty)) {
1375 if (msr & TI_MSR_CTS) {
1376 tty->hw_stopped = 0;
1379 tty->hw_stopped = 1;
1386 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1388 unsigned long flags;
1390 spin_lock_irqsave(&tport->tp_lock, flags);
1392 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1393 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1395 spin_unlock_irqrestore(&tport->tp_lock, flags);
1399 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1403 unsigned long flags;
1405 spin_lock_irqsave(&tport->tp_lock, flags);
1407 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1408 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1409 urb = tport->tp_port->read_urb;
1410 spin_unlock_irqrestore(&tport->tp_lock, flags);
1411 urb->context = tport;
1412 status = usb_submit_urb(urb, GFP_KERNEL);
1414 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1415 spin_unlock_irqrestore(&tport->tp_lock, flags);
1422 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1423 __u16 moduleid, __u16 value, __u8 *data, int size)
1427 status = usb_control_msg(tdev->td_serial->dev,
1428 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1429 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1430 value, moduleid, data, size, 1000);
1442 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1443 __u16 moduleid, __u16 value, __u8 *data, int size)
1447 status = usb_control_msg(tdev->td_serial->dev,
1448 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1449 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1450 value, moduleid, data, size, 1000);
1462 static int ti_write_byte(struct usb_serial_port *port,
1463 struct ti_device *tdev, unsigned long addr,
1464 __u8 mask, __u8 byte)
1468 struct ti_write_data_bytes *data;
1470 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1473 size = sizeof(struct ti_write_data_bytes) + 2;
1474 data = kmalloc(size, GFP_KERNEL);
1476 dev_err(&port->dev, "%s - out of memory\n", __func__);
1480 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1481 data->bDataType = TI_RW_DATA_BYTE;
1482 data->bDataCounter = 1;
1483 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1484 data->wBaseAddrLo = cpu_to_be16(addr);
1485 data->bData[0] = mask;
1486 data->bData[1] = byte;
1488 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1489 (__u8 *)data, size);
1492 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1499 static int ti_do_download(struct usb_device *dev, int pipe,
1500 u8 *buffer, int size)
1505 struct ti_firmware_header *header;
1509 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1510 cs = (__u8)(cs + buffer[pos]);
1512 header = (struct ti_firmware_header *)buffer;
1513 header->wLength = cpu_to_le16((__u16)(size
1514 - sizeof(struct ti_firmware_header)));
1515 header->bCheckSum = cs;
1517 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1518 for (pos = 0; pos < size; pos += done) {
1519 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1520 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1528 static int ti_download_firmware(struct ti_device *tdev)
1533 struct usb_device *dev = tdev->td_serial->dev;
1534 unsigned int pipe = usb_sndbulkpipe(dev,
1535 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1536 const struct firmware *fw_p;
1539 /* try ID specific firmware first, then try generic firmware */
1540 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1541 le16_to_cpu(dev->descriptor.idVendor),
1542 le16_to_cpu(dev->descriptor.idProduct));
1543 status = request_firmware(&fw_p, buf, &dev->dev);
1547 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1548 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1549 case MTS_CDMA_PRODUCT_ID:
1550 strcpy(buf, "mts_cdma.fw");
1552 case MTS_GSM_PRODUCT_ID:
1553 strcpy(buf, "mts_gsm.fw");
1555 case MTS_EDGE_PRODUCT_ID:
1556 strcpy(buf, "mts_edge.fw");
1558 case MTS_MT9234MU_PRODUCT_ID:
1559 strcpy(buf, "mts_mt9234mu.fw");
1561 case MTS_MT9234ZBA_PRODUCT_ID:
1562 strcpy(buf, "mts_mt9234zba.fw");
1564 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1565 strcpy(buf, "mts_mt9234zba.fw");
1568 if (buf[0] == '\0') {
1569 if (tdev->td_is_3410)
1570 strcpy(buf, "ti_3410.fw");
1572 strcpy(buf, "ti_5052.fw");
1574 status = request_firmware(&fw_p, buf, &dev->dev);
1577 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1580 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1581 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1582 release_firmware(fw_p);
1586 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1587 buffer = kmalloc(buffer_size, GFP_KERNEL);
1589 memcpy(buffer, fw_p->data, fw_p->size);
1590 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1591 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1594 dev_dbg(&dev->dev, "%s ENOMEM\n", __func__);
1597 release_firmware(fw_p);
1599 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1604 dev_dbg(&dev->dev, "%s - download successful\n", __func__);