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USB: serial: ti_usb_3410_5052: remove unused variables
[deliverable/linux.git] / drivers / usb / serial / ti_usb_3410_5052.c
1 /*
2 * TI 3410/5052 USB Serial Driver
3 *
4 * Copyright (C) 2004 Texas Instruments
5 *
6 * This driver is based on the Linux io_ti driver, which is
7 * Copyright (C) 2000-2002 Inside Out Networks
8 * Copyright (C) 2001-2002 Greg Kroah-Hartman
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * For questions or problems with this driver, contact Texas Instruments
16 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
17 * Peter Berger <pberger@brimson.com>.
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/errno.h>
22 #include <linux/firmware.h>
23 #include <linux/slab.h>
24 #include <linux/tty.h>
25 #include <linux/tty_driver.h>
26 #include <linux/tty_flip.h>
27 #include <linux/module.h>
28 #include <linux/spinlock.h>
29 #include <linux/ioctl.h>
30 #include <linux/serial.h>
31 #include <linux/kfifo.h>
32 #include <linux/mutex.h>
33 #include <linux/uaccess.h>
34 #include <linux/usb.h>
35 #include <linux/usb/serial.h>
36
37 /* Configuration ids */
38 #define TI_BOOT_CONFIG 1
39 #define TI_ACTIVE_CONFIG 2
40
41 /* Vendor and product ids */
42 #define TI_VENDOR_ID 0x0451
43 #define IBM_VENDOR_ID 0x04b3
44 #define TI_3410_PRODUCT_ID 0x3410
45 #define IBM_4543_PRODUCT_ID 0x4543
46 #define IBM_454B_PRODUCT_ID 0x454b
47 #define IBM_454C_PRODUCT_ID 0x454c
48 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
49 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
50 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
51 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
52 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
53 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
54
55 /* Multi-Tech vendor and product ids */
56 #define MTS_VENDOR_ID 0x06E0
57 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
58 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
59 #define MTS_CDMA_PRODUCT_ID 0xF110
60 #define MTS_GSM_PRODUCT_ID 0xF111
61 #define MTS_EDGE_PRODUCT_ID 0xF112
62 #define MTS_MT9234MU_PRODUCT_ID 0xF114
63 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115
64 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
65
66 /* Abbott Diabetics vendor and product ids */
67 #define ABBOTT_VENDOR_ID 0x1a61
68 #define ABBOTT_STEREO_PLUG_ID 0x3410
69 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
70 #define ABBOTT_STRIP_PORT_ID 0x3420
71
72 /* Honeywell vendor and product IDs */
73 #define HONEYWELL_VENDOR_ID 0x10ac
74 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
75
76 /* Moxa UPORT 11x0 vendor and product IDs */
77 #define MXU1_VENDOR_ID 0x110a
78 #define MXU1_1110_PRODUCT_ID 0x1110
79 #define MXU1_1130_PRODUCT_ID 0x1130
80 #define MXU1_1150_PRODUCT_ID 0x1150
81 #define MXU1_1151_PRODUCT_ID 0x1151
82 #define MXU1_1131_PRODUCT_ID 0x1131
83
84 /* Commands */
85 #define TI_GET_VERSION 0x01
86 #define TI_GET_PORT_STATUS 0x02
87 #define TI_GET_PORT_DEV_INFO 0x03
88 #define TI_GET_CONFIG 0x04
89 #define TI_SET_CONFIG 0x05
90 #define TI_OPEN_PORT 0x06
91 #define TI_CLOSE_PORT 0x07
92 #define TI_START_PORT 0x08
93 #define TI_STOP_PORT 0x09
94 #define TI_TEST_PORT 0x0A
95 #define TI_PURGE_PORT 0x0B
96 #define TI_RESET_EXT_DEVICE 0x0C
97 #define TI_WRITE_DATA 0x80
98 #define TI_READ_DATA 0x81
99 #define TI_REQ_TYPE_CLASS 0x82
100
101 /* Module identifiers */
102 #define TI_I2C_PORT 0x01
103 #define TI_IEEE1284_PORT 0x02
104 #define TI_UART1_PORT 0x03
105 #define TI_UART2_PORT 0x04
106 #define TI_RAM_PORT 0x05
107
108 /* Modem status */
109 #define TI_MSR_DELTA_CTS 0x01
110 #define TI_MSR_DELTA_DSR 0x02
111 #define TI_MSR_DELTA_RI 0x04
112 #define TI_MSR_DELTA_CD 0x08
113 #define TI_MSR_CTS 0x10
114 #define TI_MSR_DSR 0x20
115 #define TI_MSR_RI 0x40
116 #define TI_MSR_CD 0x80
117 #define TI_MSR_DELTA_MASK 0x0F
118 #define TI_MSR_MASK 0xF0
119
120 /* Line status */
121 #define TI_LSR_OVERRUN_ERROR 0x01
122 #define TI_LSR_PARITY_ERROR 0x02
123 #define TI_LSR_FRAMING_ERROR 0x04
124 #define TI_LSR_BREAK 0x08
125 #define TI_LSR_ERROR 0x0F
126 #define TI_LSR_RX_FULL 0x10
127 #define TI_LSR_TX_EMPTY 0x20
128
129 /* Line control */
130 #define TI_LCR_BREAK 0x40
131
132 /* Modem control */
133 #define TI_MCR_LOOP 0x04
134 #define TI_MCR_DTR 0x10
135 #define TI_MCR_RTS 0x20
136
137 /* Mask settings */
138 #define TI_UART_ENABLE_RTS_IN 0x0001
139 #define TI_UART_DISABLE_RTS 0x0002
140 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008
141 #define TI_UART_ENABLE_DSR_OUT 0x0010
142 #define TI_UART_ENABLE_CTS_OUT 0x0020
143 #define TI_UART_ENABLE_X_OUT 0x0040
144 #define TI_UART_ENABLE_XA_OUT 0x0080
145 #define TI_UART_ENABLE_X_IN 0x0100
146 #define TI_UART_ENABLE_DTR_IN 0x0800
147 #define TI_UART_DISABLE_DTR 0x1000
148 #define TI_UART_ENABLE_MS_INTS 0x2000
149 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000
150
151 /* Parity */
152 #define TI_UART_NO_PARITY 0x00
153 #define TI_UART_ODD_PARITY 0x01
154 #define TI_UART_EVEN_PARITY 0x02
155 #define TI_UART_MARK_PARITY 0x03
156 #define TI_UART_SPACE_PARITY 0x04
157
158 /* Stop bits */
159 #define TI_UART_1_STOP_BITS 0x00
160 #define TI_UART_1_5_STOP_BITS 0x01
161 #define TI_UART_2_STOP_BITS 0x02
162
163 /* Bits per character */
164 #define TI_UART_5_DATA_BITS 0x00
165 #define TI_UART_6_DATA_BITS 0x01
166 #define TI_UART_7_DATA_BITS 0x02
167 #define TI_UART_8_DATA_BITS 0x03
168
169 /* 232/485 modes */
170 #define TI_UART_232 0x00
171 #define TI_UART_485_RECEIVER_DISABLED 0x01
172 #define TI_UART_485_RECEIVER_ENABLED 0x02
173
174 /* Pipe transfer mode and timeout */
175 #define TI_PIPE_MODE_CONTINUOUS 0x01
176 #define TI_PIPE_MODE_MASK 0x03
177 #define TI_PIPE_TIMEOUT_MASK 0x7C
178 #define TI_PIPE_TIMEOUT_ENABLE 0x80
179
180 /* Config struct */
181 struct ti_uart_config {
182 __be16 wBaudRate;
183 __be16 wFlags;
184 u8 bDataBits;
185 u8 bParity;
186 u8 bStopBits;
187 char cXon;
188 char cXoff;
189 u8 bUartMode;
190 } __packed;
191
192 /* Get port status */
193 struct ti_port_status {
194 u8 bCmdCode;
195 u8 bModuleId;
196 u8 bErrorCode;
197 u8 bMSR;
198 u8 bLSR;
199 } __packed;
200
201 /* Purge modes */
202 #define TI_PURGE_OUTPUT 0x00
203 #define TI_PURGE_INPUT 0x80
204
205 /* Read/Write data */
206 #define TI_RW_DATA_ADDR_SFR 0x10
207 #define TI_RW_DATA_ADDR_IDATA 0x20
208 #define TI_RW_DATA_ADDR_XDATA 0x30
209 #define TI_RW_DATA_ADDR_CODE 0x40
210 #define TI_RW_DATA_ADDR_GPIO 0x50
211 #define TI_RW_DATA_ADDR_I2C 0x60
212 #define TI_RW_DATA_ADDR_FLASH 0x70
213 #define TI_RW_DATA_ADDR_DSP 0x80
214
215 #define TI_RW_DATA_UNSPECIFIED 0x00
216 #define TI_RW_DATA_BYTE 0x01
217 #define TI_RW_DATA_WORD 0x02
218 #define TI_RW_DATA_DOUBLE_WORD 0x04
219
220 struct ti_write_data_bytes {
221 u8 bAddrType;
222 u8 bDataType;
223 u8 bDataCounter;
224 __be16 wBaseAddrHi;
225 __be16 wBaseAddrLo;
226 u8 bData[0];
227 } __packed;
228
229 struct ti_read_data_request {
230 __u8 bAddrType;
231 __u8 bDataType;
232 __u8 bDataCounter;
233 __be16 wBaseAddrHi;
234 __be16 wBaseAddrLo;
235 } __packed;
236
237 struct ti_read_data_bytes {
238 __u8 bCmdCode;
239 __u8 bModuleId;
240 __u8 bErrorCode;
241 __u8 bData[0];
242 } __packed;
243
244 /* Interrupt struct */
245 struct ti_interrupt {
246 __u8 bICode;
247 __u8 bIInfo;
248 } __packed;
249
250 /* Interrupt codes */
251 #define TI_CODE_HARDWARE_ERROR 0xFF
252 #define TI_CODE_DATA_ERROR 0x03
253 #define TI_CODE_MODEM_STATUS 0x04
254
255 /* Download firmware max packet size */
256 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64
257
258 /* Firmware image header */
259 struct ti_firmware_header {
260 __le16 wLength;
261 u8 bCheckSum;
262 } __packed;
263
264 /* UART addresses */
265 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
266 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
267 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
268 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
269
270 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
271 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
272
273 #define TI_FIRMWARE_BUF_SIZE 16284
274
275 #define TI_TRANSFER_TIMEOUT 2
276
277 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
278
279 /* read urb states */
280 #define TI_READ_URB_RUNNING 0
281 #define TI_READ_URB_STOPPING 1
282 #define TI_READ_URB_STOPPED 2
283
284 #define TI_EXTRA_VID_PID_COUNT 5
285
286 struct ti_port {
287 int tp_is_open;
288 u8 tp_msr;
289 u8 tp_shadow_mcr;
290 u8 tp_uart_mode; /* 232 or 485 modes */
291 unsigned int tp_uart_base_addr;
292 struct ti_device *tp_tdev;
293 struct usb_serial_port *tp_port;
294 spinlock_t tp_lock;
295 int tp_read_urb_state;
296 int tp_write_urb_in_use;
297 };
298
299 struct ti_device {
300 struct mutex td_open_close_lock;
301 int td_open_port_count;
302 struct usb_serial *td_serial;
303 int td_is_3410;
304 bool td_rs485_only;
305 };
306
307 static int ti_startup(struct usb_serial *serial);
308 static void ti_release(struct usb_serial *serial);
309 static int ti_port_probe(struct usb_serial_port *port);
310 static int ti_port_remove(struct usb_serial_port *port);
311 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
312 static void ti_close(struct usb_serial_port *port);
313 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
314 const unsigned char *data, int count);
315 static int ti_write_room(struct tty_struct *tty);
316 static int ti_chars_in_buffer(struct tty_struct *tty);
317 static bool ti_tx_empty(struct usb_serial_port *port);
318 static void ti_throttle(struct tty_struct *tty);
319 static void ti_unthrottle(struct tty_struct *tty);
320 static int ti_ioctl(struct tty_struct *tty,
321 unsigned int cmd, unsigned long arg);
322 static void ti_set_termios(struct tty_struct *tty,
323 struct usb_serial_port *port, struct ktermios *old_termios);
324 static int ti_tiocmget(struct tty_struct *tty);
325 static int ti_tiocmset(struct tty_struct *tty,
326 unsigned int set, unsigned int clear);
327 static void ti_break(struct tty_struct *tty, int break_state);
328 static void ti_interrupt_callback(struct urb *urb);
329 static void ti_bulk_in_callback(struct urb *urb);
330 static void ti_bulk_out_callback(struct urb *urb);
331
332 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
333 int length);
334 static void ti_send(struct ti_port *tport);
335 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
336 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
337 static int ti_get_serial_info(struct ti_port *tport,
338 struct serial_struct __user *ret_arg);
339 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
340 struct serial_struct __user *new_arg);
341 static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
342
343 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
344 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
345
346 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
347 __u16 moduleid, __u16 value, __u8 *data, int size);
348 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
349 __u16 moduleid, __u16 value, __u8 *data, int size);
350
351 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
352 unsigned long addr, u8 mask, u8 byte);
353
354 static int ti_download_firmware(struct ti_device *tdev);
355
356 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
357
358 static const struct usb_device_id ti_id_table_3410[] = {
359 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
360 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
361 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
362 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
363 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
364 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
365 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
366 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
367 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
368 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
369 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
370 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
371 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
372 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
373 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
374 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
375 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
376 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
377 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
378 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
379 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
380 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
381 { } /* terminator */
382 };
383
384 static const struct usb_device_id ti_id_table_5052[] = {
385 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
386 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
387 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
388 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
389 { }
390 };
391
392 static const struct usb_device_id ti_id_table_combined[] = {
393 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
394 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
395 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
396 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
397 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
398 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
399 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
400 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
401 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
402 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
403 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
404 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
405 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
406 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
407 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
408 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
409 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
410 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
411 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
412 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
413 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
414 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
415 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
416 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
417 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
418 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
419 { } /* terminator */
420 };
421
422 static struct usb_serial_driver ti_1port_device = {
423 .driver = {
424 .owner = THIS_MODULE,
425 .name = "ti_usb_3410_5052_1",
426 },
427 .description = "TI USB 3410 1 port adapter",
428 .id_table = ti_id_table_3410,
429 .num_ports = 1,
430 .attach = ti_startup,
431 .release = ti_release,
432 .port_probe = ti_port_probe,
433 .port_remove = ti_port_remove,
434 .open = ti_open,
435 .close = ti_close,
436 .write = ti_write,
437 .write_room = ti_write_room,
438 .chars_in_buffer = ti_chars_in_buffer,
439 .tx_empty = ti_tx_empty,
440 .throttle = ti_throttle,
441 .unthrottle = ti_unthrottle,
442 .ioctl = ti_ioctl,
443 .set_termios = ti_set_termios,
444 .tiocmget = ti_tiocmget,
445 .tiocmset = ti_tiocmset,
446 .tiocmiwait = usb_serial_generic_tiocmiwait,
447 .get_icount = usb_serial_generic_get_icount,
448 .break_ctl = ti_break,
449 .read_int_callback = ti_interrupt_callback,
450 .read_bulk_callback = ti_bulk_in_callback,
451 .write_bulk_callback = ti_bulk_out_callback,
452 };
453
454 static struct usb_serial_driver ti_2port_device = {
455 .driver = {
456 .owner = THIS_MODULE,
457 .name = "ti_usb_3410_5052_2",
458 },
459 .description = "TI USB 5052 2 port adapter",
460 .id_table = ti_id_table_5052,
461 .num_ports = 2,
462 .attach = ti_startup,
463 .release = ti_release,
464 .port_probe = ti_port_probe,
465 .port_remove = ti_port_remove,
466 .open = ti_open,
467 .close = ti_close,
468 .write = ti_write,
469 .write_room = ti_write_room,
470 .chars_in_buffer = ti_chars_in_buffer,
471 .tx_empty = ti_tx_empty,
472 .throttle = ti_throttle,
473 .unthrottle = ti_unthrottle,
474 .ioctl = ti_ioctl,
475 .set_termios = ti_set_termios,
476 .tiocmget = ti_tiocmget,
477 .tiocmset = ti_tiocmset,
478 .tiocmiwait = usb_serial_generic_tiocmiwait,
479 .get_icount = usb_serial_generic_get_icount,
480 .break_ctl = ti_break,
481 .read_int_callback = ti_interrupt_callback,
482 .read_bulk_callback = ti_bulk_in_callback,
483 .write_bulk_callback = ti_bulk_out_callback,
484 };
485
486 static struct usb_serial_driver * const serial_drivers[] = {
487 &ti_1port_device, &ti_2port_device, NULL
488 };
489
490 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
491 MODULE_DESCRIPTION(TI_DRIVER_DESC);
492 MODULE_LICENSE("GPL");
493
494 MODULE_FIRMWARE("ti_3410.fw");
495 MODULE_FIRMWARE("ti_5052.fw");
496 MODULE_FIRMWARE("mts_cdma.fw");
497 MODULE_FIRMWARE("mts_gsm.fw");
498 MODULE_FIRMWARE("mts_edge.fw");
499 MODULE_FIRMWARE("mts_mt9234mu.fw");
500 MODULE_FIRMWARE("mts_mt9234zba.fw");
501 MODULE_FIRMWARE("moxa/moxa-1110.fw");
502 MODULE_FIRMWARE("moxa/moxa-1130.fw");
503 MODULE_FIRMWARE("moxa/moxa-1131.fw");
504 MODULE_FIRMWARE("moxa/moxa-1150.fw");
505 MODULE_FIRMWARE("moxa/moxa-1151.fw");
506
507 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
508 MODULE_PARM_DESC(closing_wait,
509 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
510
511 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
512
513 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
514
515 static int ti_startup(struct usb_serial *serial)
516 {
517 struct ti_device *tdev;
518 struct usb_device *dev = serial->dev;
519 struct usb_host_interface *cur_altsetting;
520 int num_endpoints;
521 u16 vid, pid;
522 int status;
523
524 dev_dbg(&dev->dev,
525 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
526 __func__, le16_to_cpu(dev->descriptor.idProduct),
527 dev->descriptor.bNumConfigurations,
528 dev->actconfig->desc.bConfigurationValue);
529
530 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
531 if (!tdev)
532 return -ENOMEM;
533
534 mutex_init(&tdev->td_open_close_lock);
535 tdev->td_serial = serial;
536 usb_set_serial_data(serial, tdev);
537
538 /* determine device type */
539 if (serial->type == &ti_1port_device)
540 tdev->td_is_3410 = 1;
541 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
542 tdev->td_is_3410 ? "3410" : "5052");
543
544 vid = le16_to_cpu(dev->descriptor.idVendor);
545 pid = le16_to_cpu(dev->descriptor.idProduct);
546 if (vid == MXU1_VENDOR_ID) {
547 switch (pid) {
548 case MXU1_1130_PRODUCT_ID:
549 case MXU1_1131_PRODUCT_ID:
550 tdev->td_rs485_only = true;
551 break;
552 }
553 }
554
555 cur_altsetting = serial->interface->cur_altsetting;
556 num_endpoints = cur_altsetting->desc.bNumEndpoints;
557
558 /* if we have only 1 configuration and 1 endpoint, download firmware */
559 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
560 status = ti_download_firmware(tdev);
561
562 if (status != 0)
563 goto free_tdev;
564
565 /* 3410 must be reset, 5052 resets itself */
566 if (tdev->td_is_3410) {
567 msleep_interruptible(100);
568 usb_reset_device(dev);
569 }
570
571 status = -ENODEV;
572 goto free_tdev;
573 }
574
575 /* the second configuration must be set */
576 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
577 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
578 status = status ? status : -ENODEV;
579 goto free_tdev;
580 }
581
582 return 0;
583
584 free_tdev:
585 kfree(tdev);
586 usb_set_serial_data(serial, NULL);
587 return status;
588 }
589
590
591 static void ti_release(struct usb_serial *serial)
592 {
593 struct ti_device *tdev = usb_get_serial_data(serial);
594
595 kfree(tdev);
596 }
597
598 static int ti_port_probe(struct usb_serial_port *port)
599 {
600 struct ti_port *tport;
601
602 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
603 if (!tport)
604 return -ENOMEM;
605
606 spin_lock_init(&tport->tp_lock);
607 if (port == port->serial->port[0])
608 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
609 else
610 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
611 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
612 tport->tp_port = port;
613 tport->tp_tdev = usb_get_serial_data(port->serial);
614
615 if (tport->tp_tdev->td_rs485_only)
616 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
617 else
618 tport->tp_uart_mode = TI_UART_232;
619
620 usb_set_serial_port_data(port, tport);
621
622 port->port.drain_delay = 3;
623
624 return 0;
625 }
626
627 static int ti_port_remove(struct usb_serial_port *port)
628 {
629 struct ti_port *tport;
630
631 tport = usb_get_serial_port_data(port);
632 kfree(tport);
633
634 return 0;
635 }
636
637 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
638 {
639 struct ti_port *tport = usb_get_serial_port_data(port);
640 struct ti_device *tdev;
641 struct usb_device *dev;
642 struct urb *urb;
643 int port_number;
644 int status;
645 u16 open_settings;
646
647 open_settings = (TI_PIPE_MODE_CONTINUOUS |
648 TI_PIPE_TIMEOUT_ENABLE |
649 (TI_TRANSFER_TIMEOUT << 2));
650
651 dev = port->serial->dev;
652 tdev = tport->tp_tdev;
653
654 /* only one open on any port on a device at a time */
655 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
656 return -ERESTARTSYS;
657
658 port_number = port->port_number;
659
660 tport->tp_msr = 0;
661 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
662
663 /* start interrupt urb the first time a port is opened on this device */
664 if (tdev->td_open_port_count == 0) {
665 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
666 urb = tdev->td_serial->port[0]->interrupt_in_urb;
667 if (!urb) {
668 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
669 status = -EINVAL;
670 goto release_lock;
671 }
672 urb->context = tdev;
673 status = usb_submit_urb(urb, GFP_KERNEL);
674 if (status) {
675 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
676 goto release_lock;
677 }
678 }
679
680 if (tty)
681 ti_set_termios(tty, port, &tty->termios);
682
683 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
684 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
685 if (status) {
686 dev_err(&port->dev, "%s - cannot send open command, %d\n",
687 __func__, status);
688 goto unlink_int_urb;
689 }
690
691 status = ti_command_out_sync(tdev, TI_START_PORT,
692 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
693 if (status) {
694 dev_err(&port->dev, "%s - cannot send start command, %d\n",
695 __func__, status);
696 goto unlink_int_urb;
697 }
698
699 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
700 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
701 if (status) {
702 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
703 __func__, status);
704 goto unlink_int_urb;
705 }
706 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
707 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
708 if (status) {
709 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
710 __func__, status);
711 goto unlink_int_urb;
712 }
713
714 /* reset the data toggle on the bulk endpoints to work around bug in
715 * host controllers where things get out of sync some times */
716 usb_clear_halt(dev, port->write_urb->pipe);
717 usb_clear_halt(dev, port->read_urb->pipe);
718
719 if (tty)
720 ti_set_termios(tty, port, &tty->termios);
721
722 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
723 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
724 if (status) {
725 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
726 __func__, status);
727 goto unlink_int_urb;
728 }
729
730 status = ti_command_out_sync(tdev, TI_START_PORT,
731 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
732 if (status) {
733 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
734 __func__, status);
735 goto unlink_int_urb;
736 }
737
738 /* start read urb */
739 urb = port->read_urb;
740 if (!urb) {
741 dev_err(&port->dev, "%s - no read urb\n", __func__);
742 status = -EINVAL;
743 goto unlink_int_urb;
744 }
745 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
746 urb->context = tport;
747 status = usb_submit_urb(urb, GFP_KERNEL);
748 if (status) {
749 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
750 __func__, status);
751 goto unlink_int_urb;
752 }
753
754 tport->tp_is_open = 1;
755 ++tdev->td_open_port_count;
756
757 goto release_lock;
758
759 unlink_int_urb:
760 if (tdev->td_open_port_count == 0)
761 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
762 release_lock:
763 mutex_unlock(&tdev->td_open_close_lock);
764 return status;
765 }
766
767
768 static void ti_close(struct usb_serial_port *port)
769 {
770 struct ti_device *tdev;
771 struct ti_port *tport;
772 int port_number;
773 int status;
774 int do_unlock;
775 unsigned long flags;
776
777 tdev = usb_get_serial_data(port->serial);
778 tport = usb_get_serial_port_data(port);
779
780 tport->tp_is_open = 0;
781
782 usb_kill_urb(port->read_urb);
783 usb_kill_urb(port->write_urb);
784 tport->tp_write_urb_in_use = 0;
785 spin_lock_irqsave(&tport->tp_lock, flags);
786 kfifo_reset_out(&port->write_fifo);
787 spin_unlock_irqrestore(&tport->tp_lock, flags);
788
789 port_number = port->port_number;
790
791 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
792 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
793 if (status)
794 dev_err(&port->dev,
795 "%s - cannot send close port command, %d\n"
796 , __func__, status);
797
798 /* if mutex_lock is interrupted, continue anyway */
799 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
800 --tport->tp_tdev->td_open_port_count;
801 if (tport->tp_tdev->td_open_port_count <= 0) {
802 /* last port is closed, shut down interrupt urb */
803 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
804 tport->tp_tdev->td_open_port_count = 0;
805 }
806 if (do_unlock)
807 mutex_unlock(&tdev->td_open_close_lock);
808 }
809
810
811 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
812 const unsigned char *data, int count)
813 {
814 struct ti_port *tport = usb_get_serial_port_data(port);
815
816 if (count == 0) {
817 return 0;
818 }
819
820 if (!tport->tp_is_open)
821 return -ENODEV;
822
823 count = kfifo_in_locked(&port->write_fifo, data, count,
824 &tport->tp_lock);
825 ti_send(tport);
826
827 return count;
828 }
829
830
831 static int ti_write_room(struct tty_struct *tty)
832 {
833 struct usb_serial_port *port = tty->driver_data;
834 struct ti_port *tport = usb_get_serial_port_data(port);
835 int room = 0;
836 unsigned long flags;
837
838 spin_lock_irqsave(&tport->tp_lock, flags);
839 room = kfifo_avail(&port->write_fifo);
840 spin_unlock_irqrestore(&tport->tp_lock, flags);
841
842 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
843 return room;
844 }
845
846
847 static int ti_chars_in_buffer(struct tty_struct *tty)
848 {
849 struct usb_serial_port *port = tty->driver_data;
850 struct ti_port *tport = usb_get_serial_port_data(port);
851 int chars = 0;
852 unsigned long flags;
853
854 spin_lock_irqsave(&tport->tp_lock, flags);
855 chars = kfifo_len(&port->write_fifo);
856 spin_unlock_irqrestore(&tport->tp_lock, flags);
857
858 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
859 return chars;
860 }
861
862 static bool ti_tx_empty(struct usb_serial_port *port)
863 {
864 struct ti_port *tport = usb_get_serial_port_data(port);
865 int ret;
866 u8 lsr;
867
868 ret = ti_get_lsr(tport, &lsr);
869 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
870 return false;
871
872 return true;
873 }
874
875 static void ti_throttle(struct tty_struct *tty)
876 {
877 struct usb_serial_port *port = tty->driver_data;
878 struct ti_port *tport = usb_get_serial_port_data(port);
879
880 if (I_IXOFF(tty) || C_CRTSCTS(tty))
881 ti_stop_read(tport, tty);
882
883 }
884
885
886 static void ti_unthrottle(struct tty_struct *tty)
887 {
888 struct usb_serial_port *port = tty->driver_data;
889 struct ti_port *tport = usb_get_serial_port_data(port);
890 int status;
891
892 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
893 status = ti_restart_read(tport, tty);
894 if (status)
895 dev_err(&port->dev, "%s - cannot restart read, %d\n",
896 __func__, status);
897 }
898 }
899
900 static int ti_ioctl(struct tty_struct *tty,
901 unsigned int cmd, unsigned long arg)
902 {
903 struct usb_serial_port *port = tty->driver_data;
904 struct ti_port *tport = usb_get_serial_port_data(port);
905
906 switch (cmd) {
907 case TIOCGSERIAL:
908 return ti_get_serial_info(tport,
909 (struct serial_struct __user *)arg);
910 case TIOCSSERIAL:
911 return ti_set_serial_info(tty, tport,
912 (struct serial_struct __user *)arg);
913 }
914 return -ENOIOCTLCMD;
915 }
916
917
918 static void ti_set_termios(struct tty_struct *tty,
919 struct usb_serial_port *port, struct ktermios *old_termios)
920 {
921 struct ti_port *tport = usb_get_serial_port_data(port);
922 struct ti_uart_config *config;
923 tcflag_t cflag, iflag;
924 int baud;
925 int status;
926 int port_number = port->port_number;
927 unsigned int mcr;
928 u16 wbaudrate;
929 u16 wflags = 0;
930
931 cflag = tty->termios.c_cflag;
932 iflag = tty->termios.c_iflag;
933
934 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
935 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
936 old_termios->c_cflag, old_termios->c_iflag);
937
938 config = kmalloc(sizeof(*config), GFP_KERNEL);
939 if (!config)
940 return;
941
942 /* these flags must be set */
943 wflags |= TI_UART_ENABLE_MS_INTS;
944 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
945 config->bUartMode = tport->tp_uart_mode;
946
947 switch (C_CSIZE(tty)) {
948 case CS5:
949 config->bDataBits = TI_UART_5_DATA_BITS;
950 break;
951 case CS6:
952 config->bDataBits = TI_UART_6_DATA_BITS;
953 break;
954 case CS7:
955 config->bDataBits = TI_UART_7_DATA_BITS;
956 break;
957 default:
958 case CS8:
959 config->bDataBits = TI_UART_8_DATA_BITS;
960 break;
961 }
962
963 /* CMSPAR isn't supported by this driver */
964 tty->termios.c_cflag &= ~CMSPAR;
965
966 if (C_PARENB(tty)) {
967 if (C_PARODD(tty)) {
968 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
969 config->bParity = TI_UART_ODD_PARITY;
970 } else {
971 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
972 config->bParity = TI_UART_EVEN_PARITY;
973 }
974 } else {
975 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
976 config->bParity = TI_UART_NO_PARITY;
977 }
978
979 if (C_CSTOPB(tty))
980 config->bStopBits = TI_UART_2_STOP_BITS;
981 else
982 config->bStopBits = TI_UART_1_STOP_BITS;
983
984 if (C_CRTSCTS(tty)) {
985 /* RTS flow control must be off to drop RTS for baud rate B0 */
986 if ((C_BAUD(tty)) != B0)
987 wflags |= TI_UART_ENABLE_RTS_IN;
988 wflags |= TI_UART_ENABLE_CTS_OUT;
989 } else {
990 ti_restart_read(tport, tty);
991 }
992
993 if (I_IXOFF(tty) || I_IXON(tty)) {
994 config->cXon = START_CHAR(tty);
995 config->cXoff = STOP_CHAR(tty);
996
997 if (I_IXOFF(tty))
998 wflags |= TI_UART_ENABLE_X_IN;
999 else
1000 ti_restart_read(tport, tty);
1001
1002 if (I_IXON(tty))
1003 wflags |= TI_UART_ENABLE_X_OUT;
1004 }
1005
1006 baud = tty_get_baud_rate(tty);
1007 if (!baud)
1008 baud = 9600;
1009 if (tport->tp_tdev->td_is_3410)
1010 wbaudrate = (923077 + baud/2) / baud;
1011 else
1012 wbaudrate = (461538 + baud/2) / baud;
1013
1014 /* FIXME: Should calculate resulting baud here and report it back */
1015 if ((C_BAUD(tty)) != B0)
1016 tty_encode_baud_rate(tty, baud, baud);
1017
1018 dev_dbg(&port->dev,
1019 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
1020 __func__, baud, wbaudrate, wflags,
1021 config->bDataBits, config->bParity, config->bStopBits,
1022 config->cXon, config->cXoff, config->bUartMode);
1023
1024 config->wBaudRate = cpu_to_be16(wbaudrate);
1025 config->wFlags = cpu_to_be16(wflags);
1026
1027 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
1028 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
1029 sizeof(*config));
1030 if (status)
1031 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1032 __func__, port_number, status);
1033
1034 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1035 mcr = tport->tp_shadow_mcr;
1036 /* if baud rate is B0, clear RTS and DTR */
1037 if (C_BAUD(tty) == B0)
1038 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1039 status = ti_set_mcr(tport, mcr);
1040 if (status)
1041 dev_err(&port->dev,
1042 "%s - cannot set modem control on port %d, %d\n",
1043 __func__, port_number, status);
1044
1045 kfree(config);
1046 }
1047
1048
1049 static int ti_tiocmget(struct tty_struct *tty)
1050 {
1051 struct usb_serial_port *port = tty->driver_data;
1052 struct ti_port *tport = usb_get_serial_port_data(port);
1053 unsigned int result;
1054 unsigned int msr;
1055 unsigned int mcr;
1056 unsigned long flags;
1057
1058 spin_lock_irqsave(&tport->tp_lock, flags);
1059 msr = tport->tp_msr;
1060 mcr = tport->tp_shadow_mcr;
1061 spin_unlock_irqrestore(&tport->tp_lock, flags);
1062
1063 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1064 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1065 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1066 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1067 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1068 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1069 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1070
1071 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1072
1073 return result;
1074 }
1075
1076
1077 static int ti_tiocmset(struct tty_struct *tty,
1078 unsigned int set, unsigned int clear)
1079 {
1080 struct usb_serial_port *port = tty->driver_data;
1081 struct ti_port *tport = usb_get_serial_port_data(port);
1082 unsigned int mcr;
1083 unsigned long flags;
1084
1085 spin_lock_irqsave(&tport->tp_lock, flags);
1086 mcr = tport->tp_shadow_mcr;
1087
1088 if (set & TIOCM_RTS)
1089 mcr |= TI_MCR_RTS;
1090 if (set & TIOCM_DTR)
1091 mcr |= TI_MCR_DTR;
1092 if (set & TIOCM_LOOP)
1093 mcr |= TI_MCR_LOOP;
1094
1095 if (clear & TIOCM_RTS)
1096 mcr &= ~TI_MCR_RTS;
1097 if (clear & TIOCM_DTR)
1098 mcr &= ~TI_MCR_DTR;
1099 if (clear & TIOCM_LOOP)
1100 mcr &= ~TI_MCR_LOOP;
1101 spin_unlock_irqrestore(&tport->tp_lock, flags);
1102
1103 return ti_set_mcr(tport, mcr);
1104 }
1105
1106
1107 static void ti_break(struct tty_struct *tty, int break_state)
1108 {
1109 struct usb_serial_port *port = tty->driver_data;
1110 struct ti_port *tport = usb_get_serial_port_data(port);
1111 int status;
1112
1113 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1114
1115 status = ti_write_byte(port, tport->tp_tdev,
1116 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1117 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1118
1119 if (status)
1120 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1121 }
1122
1123 static int ti_get_port_from_code(unsigned char code)
1124 {
1125 return (code >> 4) - 3;
1126 }
1127
1128 static int ti_get_func_from_code(unsigned char code)
1129 {
1130 return code & 0x0f;
1131 }
1132
1133 static void ti_interrupt_callback(struct urb *urb)
1134 {
1135 struct ti_device *tdev = urb->context;
1136 struct usb_serial_port *port;
1137 struct usb_serial *serial = tdev->td_serial;
1138 struct ti_port *tport;
1139 struct device *dev = &urb->dev->dev;
1140 unsigned char *data = urb->transfer_buffer;
1141 int length = urb->actual_length;
1142 int port_number;
1143 int function;
1144 int status = urb->status;
1145 int retval;
1146 u8 msr;
1147
1148 switch (status) {
1149 case 0:
1150 break;
1151 case -ECONNRESET:
1152 case -ENOENT:
1153 case -ESHUTDOWN:
1154 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1155 return;
1156 default:
1157 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1158 goto exit;
1159 }
1160
1161 if (length != 2) {
1162 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1163 goto exit;
1164 }
1165
1166 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1167 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1168 goto exit;
1169 }
1170
1171 port_number = ti_get_port_from_code(data[0]);
1172 function = ti_get_func_from_code(data[0]);
1173
1174 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1175 __func__, port_number, function, data[1]);
1176
1177 if (port_number >= serial->num_ports) {
1178 dev_err(dev, "%s - bad port number, %d\n",
1179 __func__, port_number);
1180 goto exit;
1181 }
1182
1183 port = serial->port[port_number];
1184
1185 tport = usb_get_serial_port_data(port);
1186 if (!tport)
1187 goto exit;
1188
1189 switch (function) {
1190 case TI_CODE_DATA_ERROR:
1191 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1192 __func__, port_number, data[1]);
1193 break;
1194
1195 case TI_CODE_MODEM_STATUS:
1196 msr = data[1];
1197 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1198 ti_handle_new_msr(tport, msr);
1199 break;
1200
1201 default:
1202 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1203 __func__, data[1]);
1204 break;
1205 }
1206
1207 exit:
1208 retval = usb_submit_urb(urb, GFP_ATOMIC);
1209 if (retval)
1210 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1211 __func__, retval);
1212 }
1213
1214
1215 static void ti_bulk_in_callback(struct urb *urb)
1216 {
1217 struct ti_port *tport = urb->context;
1218 struct usb_serial_port *port = tport->tp_port;
1219 struct device *dev = &urb->dev->dev;
1220 int status = urb->status;
1221 int retval = 0;
1222
1223 switch (status) {
1224 case 0:
1225 break;
1226 case -ECONNRESET:
1227 case -ENOENT:
1228 case -ESHUTDOWN:
1229 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1230 return;
1231 default:
1232 dev_err(dev, "%s - nonzero urb status, %d\n",
1233 __func__, status);
1234 }
1235
1236 if (status == -EPIPE)
1237 goto exit;
1238
1239 if (status) {
1240 dev_err(dev, "%s - stopping read!\n", __func__);
1241 return;
1242 }
1243
1244 if (urb->actual_length) {
1245 usb_serial_debug_data(dev, __func__, urb->actual_length,
1246 urb->transfer_buffer);
1247
1248 if (!tport->tp_is_open)
1249 dev_dbg(dev, "%s - port closed, dropping data\n",
1250 __func__);
1251 else
1252 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1253 spin_lock(&tport->tp_lock);
1254 port->icount.rx += urb->actual_length;
1255 spin_unlock(&tport->tp_lock);
1256 }
1257
1258 exit:
1259 /* continue to read unless stopping */
1260 spin_lock(&tport->tp_lock);
1261 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1262 retval = usb_submit_urb(urb, GFP_ATOMIC);
1263 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1264 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1265
1266 spin_unlock(&tport->tp_lock);
1267 if (retval)
1268 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1269 __func__, retval);
1270 }
1271
1272
1273 static void ti_bulk_out_callback(struct urb *urb)
1274 {
1275 struct ti_port *tport = urb->context;
1276 struct usb_serial_port *port = tport->tp_port;
1277 int status = urb->status;
1278
1279 tport->tp_write_urb_in_use = 0;
1280
1281 switch (status) {
1282 case 0:
1283 break;
1284 case -ECONNRESET:
1285 case -ENOENT:
1286 case -ESHUTDOWN:
1287 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1288 return;
1289 default:
1290 dev_err_console(port, "%s - nonzero urb status, %d\n",
1291 __func__, status);
1292 }
1293
1294 /* send any buffered data */
1295 ti_send(tport);
1296 }
1297
1298
1299 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1300 int length)
1301 {
1302 int cnt;
1303
1304 do {
1305 cnt = tty_insert_flip_string(&port->port, data, length);
1306 if (cnt < length) {
1307 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1308 __func__, length - cnt);
1309 if (cnt == 0)
1310 break;
1311 }
1312 tty_flip_buffer_push(&port->port);
1313 data += cnt;
1314 length -= cnt;
1315 } while (length > 0);
1316 }
1317
1318
1319 static void ti_send(struct ti_port *tport)
1320 {
1321 int count, result;
1322 struct usb_serial_port *port = tport->tp_port;
1323 unsigned long flags;
1324
1325 spin_lock_irqsave(&tport->tp_lock, flags);
1326
1327 if (tport->tp_write_urb_in_use)
1328 goto unlock;
1329
1330 count = kfifo_out(&port->write_fifo,
1331 port->write_urb->transfer_buffer,
1332 port->bulk_out_size);
1333
1334 if (count == 0)
1335 goto unlock;
1336
1337 tport->tp_write_urb_in_use = 1;
1338
1339 spin_unlock_irqrestore(&tport->tp_lock, flags);
1340
1341 usb_serial_debug_data(&port->dev, __func__, count,
1342 port->write_urb->transfer_buffer);
1343
1344 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1345 usb_sndbulkpipe(port->serial->dev,
1346 port->bulk_out_endpointAddress),
1347 port->write_urb->transfer_buffer, count,
1348 ti_bulk_out_callback, tport);
1349
1350 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1351 if (result) {
1352 dev_err_console(port, "%s - submit write urb failed, %d\n",
1353 __func__, result);
1354 tport->tp_write_urb_in_use = 0;
1355 /* TODO: reschedule ti_send */
1356 } else {
1357 spin_lock_irqsave(&tport->tp_lock, flags);
1358 port->icount.tx += count;
1359 spin_unlock_irqrestore(&tport->tp_lock, flags);
1360 }
1361
1362 /* more room in the buffer for new writes, wakeup */
1363 tty_port_tty_wakeup(&port->port);
1364
1365 return;
1366 unlock:
1367 spin_unlock_irqrestore(&tport->tp_lock, flags);
1368 return;
1369 }
1370
1371
1372 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1373 {
1374 unsigned long flags;
1375 int status;
1376
1377 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1378 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1379 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1380
1381 spin_lock_irqsave(&tport->tp_lock, flags);
1382 if (!status)
1383 tport->tp_shadow_mcr = mcr;
1384 spin_unlock_irqrestore(&tport->tp_lock, flags);
1385
1386 return status;
1387 }
1388
1389
1390 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1391 {
1392 int size, status;
1393 struct ti_device *tdev = tport->tp_tdev;
1394 struct usb_serial_port *port = tport->tp_port;
1395 int port_number = port->port_number;
1396 struct ti_port_status *data;
1397
1398 size = sizeof(struct ti_port_status);
1399 data = kmalloc(size, GFP_KERNEL);
1400 if (!data)
1401 return -ENOMEM;
1402
1403 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1404 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1405 if (status) {
1406 dev_err(&port->dev,
1407 "%s - get port status command failed, %d\n",
1408 __func__, status);
1409 goto free_data;
1410 }
1411
1412 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1413
1414 *lsr = data->bLSR;
1415
1416 free_data:
1417 kfree(data);
1418 return status;
1419 }
1420
1421
1422 static int ti_get_serial_info(struct ti_port *tport,
1423 struct serial_struct __user *ret_arg)
1424 {
1425 struct usb_serial_port *port = tport->tp_port;
1426 struct serial_struct ret_serial;
1427 unsigned cwait;
1428
1429 if (!ret_arg)
1430 return -EFAULT;
1431
1432 cwait = port->port.closing_wait;
1433 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1434 cwait = jiffies_to_msecs(cwait) / 10;
1435
1436 memset(&ret_serial, 0, sizeof(ret_serial));
1437
1438 ret_serial.type = PORT_16550A;
1439 ret_serial.line = port->minor;
1440 ret_serial.port = port->port_number;
1441 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1442 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1443 ret_serial.closing_wait = cwait;
1444
1445 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1446 return -EFAULT;
1447
1448 return 0;
1449 }
1450
1451
1452 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1453 struct serial_struct __user *new_arg)
1454 {
1455 struct serial_struct new_serial;
1456 unsigned cwait;
1457
1458 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1459 return -EFAULT;
1460
1461 cwait = new_serial.closing_wait;
1462 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1463 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1464
1465 tport->tp_port->port.closing_wait = cwait;
1466
1467 return 0;
1468 }
1469
1470
1471 static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1472 {
1473 struct async_icount *icount;
1474 struct tty_struct *tty;
1475 unsigned long flags;
1476
1477 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1478
1479 if (msr & TI_MSR_DELTA_MASK) {
1480 spin_lock_irqsave(&tport->tp_lock, flags);
1481 icount = &tport->tp_port->icount;
1482 if (msr & TI_MSR_DELTA_CTS)
1483 icount->cts++;
1484 if (msr & TI_MSR_DELTA_DSR)
1485 icount->dsr++;
1486 if (msr & TI_MSR_DELTA_CD)
1487 icount->dcd++;
1488 if (msr & TI_MSR_DELTA_RI)
1489 icount->rng++;
1490 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1491 spin_unlock_irqrestore(&tport->tp_lock, flags);
1492 }
1493
1494 tport->tp_msr = msr & TI_MSR_MASK;
1495
1496 /* handle CTS flow control */
1497 tty = tty_port_tty_get(&tport->tp_port->port);
1498 if (tty && C_CRTSCTS(tty)) {
1499 if (msr & TI_MSR_CTS)
1500 tty_wakeup(tty);
1501 }
1502 tty_kref_put(tty);
1503 }
1504
1505
1506 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1507 {
1508 unsigned long flags;
1509
1510 spin_lock_irqsave(&tport->tp_lock, flags);
1511
1512 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1513 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1514
1515 spin_unlock_irqrestore(&tport->tp_lock, flags);
1516 }
1517
1518
1519 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1520 {
1521 struct urb *urb;
1522 int status = 0;
1523 unsigned long flags;
1524
1525 spin_lock_irqsave(&tport->tp_lock, flags);
1526
1527 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1528 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1529 urb = tport->tp_port->read_urb;
1530 spin_unlock_irqrestore(&tport->tp_lock, flags);
1531 urb->context = tport;
1532 status = usb_submit_urb(urb, GFP_KERNEL);
1533 } else {
1534 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1535 spin_unlock_irqrestore(&tport->tp_lock, flags);
1536 }
1537
1538 return status;
1539 }
1540
1541
1542 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1543 __u16 moduleid, __u16 value, __u8 *data, int size)
1544 {
1545 int status;
1546
1547 status = usb_control_msg(tdev->td_serial->dev,
1548 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1549 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1550 value, moduleid, data, size, 1000);
1551
1552 if (status == size)
1553 status = 0;
1554
1555 if (status > 0)
1556 status = -ECOMM;
1557
1558 return status;
1559 }
1560
1561
1562 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1563 __u16 moduleid, __u16 value, __u8 *data, int size)
1564 {
1565 int status;
1566
1567 status = usb_control_msg(tdev->td_serial->dev,
1568 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1569 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1570 value, moduleid, data, size, 1000);
1571
1572 if (status == size)
1573 status = 0;
1574
1575 if (status > 0)
1576 status = -ECOMM;
1577
1578 return status;
1579 }
1580
1581
1582 static int ti_write_byte(struct usb_serial_port *port,
1583 struct ti_device *tdev, unsigned long addr,
1584 u8 mask, u8 byte)
1585 {
1586 int status;
1587 unsigned int size;
1588 struct ti_write_data_bytes *data;
1589
1590 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1591 addr, mask, byte);
1592
1593 size = sizeof(struct ti_write_data_bytes) + 2;
1594 data = kmalloc(size, GFP_KERNEL);
1595 if (!data)
1596 return -ENOMEM;
1597
1598 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1599 data->bDataType = TI_RW_DATA_BYTE;
1600 data->bDataCounter = 1;
1601 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1602 data->wBaseAddrLo = cpu_to_be16(addr);
1603 data->bData[0] = mask;
1604 data->bData[1] = byte;
1605
1606 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1607 (__u8 *)data, size);
1608
1609 if (status < 0)
1610 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1611
1612 kfree(data);
1613
1614 return status;
1615 }
1616
1617 static int ti_do_download(struct usb_device *dev, int pipe,
1618 u8 *buffer, int size)
1619 {
1620 int pos;
1621 u8 cs = 0;
1622 int done;
1623 struct ti_firmware_header *header;
1624 int status = 0;
1625 int len;
1626
1627 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1628 cs = (u8)(cs + buffer[pos]);
1629
1630 header = (struct ti_firmware_header *)buffer;
1631 header->wLength = cpu_to_le16(size - sizeof(*header));
1632 header->bCheckSum = cs;
1633
1634 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1635 for (pos = 0; pos < size; pos += done) {
1636 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1637 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1638 &done, 1000);
1639 if (status)
1640 break;
1641 }
1642 return status;
1643 }
1644
1645 static int ti_download_firmware(struct ti_device *tdev)
1646 {
1647 int status;
1648 int buffer_size;
1649 u8 *buffer;
1650 struct usb_device *dev = tdev->td_serial->dev;
1651 unsigned int pipe = usb_sndbulkpipe(dev,
1652 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1653 const struct firmware *fw_p;
1654 char buf[32];
1655
1656 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1657 snprintf(buf,
1658 sizeof(buf),
1659 "moxa/moxa-%04x.fw",
1660 le16_to_cpu(dev->descriptor.idProduct));
1661
1662 status = request_firmware(&fw_p, buf, &dev->dev);
1663 goto check_firmware;
1664 }
1665
1666 /* try ID specific firmware first, then try generic firmware */
1667 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1668 le16_to_cpu(dev->descriptor.idVendor),
1669 le16_to_cpu(dev->descriptor.idProduct));
1670 status = request_firmware(&fw_p, buf, &dev->dev);
1671
1672 if (status != 0) {
1673 buf[0] = '\0';
1674 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1675 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1676 case MTS_CDMA_PRODUCT_ID:
1677 strcpy(buf, "mts_cdma.fw");
1678 break;
1679 case MTS_GSM_PRODUCT_ID:
1680 strcpy(buf, "mts_gsm.fw");
1681 break;
1682 case MTS_EDGE_PRODUCT_ID:
1683 strcpy(buf, "mts_edge.fw");
1684 break;
1685 case MTS_MT9234MU_PRODUCT_ID:
1686 strcpy(buf, "mts_mt9234mu.fw");
1687 break;
1688 case MTS_MT9234ZBA_PRODUCT_ID:
1689 strcpy(buf, "mts_mt9234zba.fw");
1690 break;
1691 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1692 strcpy(buf, "mts_mt9234zba.fw");
1693 break; }
1694 }
1695 if (buf[0] == '\0') {
1696 if (tdev->td_is_3410)
1697 strcpy(buf, "ti_3410.fw");
1698 else
1699 strcpy(buf, "ti_5052.fw");
1700 }
1701 status = request_firmware(&fw_p, buf, &dev->dev);
1702 }
1703
1704 check_firmware:
1705 if (status) {
1706 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1707 return -ENOENT;
1708 }
1709 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1710 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1711 release_firmware(fw_p);
1712 return -ENOENT;
1713 }
1714
1715 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1716 buffer = kmalloc(buffer_size, GFP_KERNEL);
1717 if (buffer) {
1718 memcpy(buffer, fw_p->data, fw_p->size);
1719 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1720 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1721 kfree(buffer);
1722 } else {
1723 status = -ENOMEM;
1724 }
1725 release_firmware(fw_p);
1726 if (status) {
1727 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1728 __func__, status);
1729 return status;
1730 }
1731
1732 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1733
1734 return 0;
1735 }
Linux kernel - Deliverables
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