1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * TI 3410/5052 USB Serial Driver
4 *
5 * Copyright (C) 2004 Texas Instruments
6 *
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
10 *
11 * For questions or problems with this driver, contact Texas Instruments
12 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
13 * Peter Berger <pberger@brimson.com>.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/firmware.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/module.h>
24 #include <linux/spinlock.h>
25 #include <linux/ioctl.h>
26 #include <linux/serial.h>
27 #include <linux/kfifo.h>
28 #include <linux/mutex.h>
29 #include <linux/uaccess.h>
30 #include <linux/usb.h>
31 #include <linux/usb/serial.h>
32
33 /* Configuration ids */
34 #define TI_BOOT_CONFIG 1
35 #define TI_ACTIVE_CONFIG 2
36
37 /* Vendor and product ids */
38 #define TI_VENDOR_ID 0x0451
39 #define IBM_VENDOR_ID 0x04b3
40 #define STARTECH_VENDOR_ID 0x14b0
41 #define TI_3410_PRODUCT_ID 0x3410
42 #define IBM_4543_PRODUCT_ID 0x4543
43 #define IBM_454B_PRODUCT_ID 0x454b
44 #define IBM_454C_PRODUCT_ID 0x454c
45 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
46 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
47 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
48 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
49 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
50 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
51
52 /* Multi-Tech vendor and product ids */
53 #define MTS_VENDOR_ID 0x06E0
54 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
55 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
56 #define MTS_CDMA_PRODUCT_ID 0xF110
57 #define MTS_GSM_PRODUCT_ID 0xF111
58 #define MTS_EDGE_PRODUCT_ID 0xF112
59 #define MTS_MT9234MU_PRODUCT_ID 0xF114
60 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115
61 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
62
63 /* Abbott Diabetics vendor and product ids */
64 #define ABBOTT_VENDOR_ID 0x1a61
65 #define ABBOTT_STEREO_PLUG_ID 0x3410
66 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
67 #define ABBOTT_STRIP_PORT_ID 0x3420
68
69 /* Honeywell vendor and product IDs */
70 #define HONEYWELL_VENDOR_ID 0x10ac
71 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
72
73 /* Moxa UPORT 11x0 vendor and product IDs */
74 #define MXU1_VENDOR_ID 0x110a
75 #define MXU1_1110_PRODUCT_ID 0x1110
76 #define MXU1_1130_PRODUCT_ID 0x1130
77 #define MXU1_1150_PRODUCT_ID 0x1150
78 #define MXU1_1151_PRODUCT_ID 0x1151
79 #define MXU1_1131_PRODUCT_ID 0x1131
80
81 /* Commands */
82 #define TI_GET_VERSION 0x01
83 #define TI_GET_PORT_STATUS 0x02
84 #define TI_GET_PORT_DEV_INFO 0x03
85 #define TI_GET_CONFIG 0x04
86 #define TI_SET_CONFIG 0x05
87 #define TI_OPEN_PORT 0x06
88 #define TI_CLOSE_PORT 0x07
89 #define TI_START_PORT 0x08
90 #define TI_STOP_PORT 0x09
91 #define TI_TEST_PORT 0x0A
92 #define TI_PURGE_PORT 0x0B
93 #define TI_RESET_EXT_DEVICE 0x0C
94 #define TI_WRITE_DATA 0x80
95 #define TI_READ_DATA 0x81
96 #define TI_REQ_TYPE_CLASS 0x82
97
98 /* Module identifiers */
99 #define TI_I2C_PORT 0x01
100 #define TI_IEEE1284_PORT 0x02
101 #define TI_UART1_PORT 0x03
102 #define TI_UART2_PORT 0x04
103 #define TI_RAM_PORT 0x05
104
105 /* Modem status */
106 #define TI_MSR_DELTA_CTS 0x01
107 #define TI_MSR_DELTA_DSR 0x02
108 #define TI_MSR_DELTA_RI 0x04
109 #define TI_MSR_DELTA_CD 0x08
110 #define TI_MSR_CTS 0x10
111 #define TI_MSR_DSR 0x20
112 #define TI_MSR_RI 0x40
113 #define TI_MSR_CD 0x80
114 #define TI_MSR_DELTA_MASK 0x0F
115 #define TI_MSR_MASK 0xF0
116
117 /* Line status */
118 #define TI_LSR_OVERRUN_ERROR 0x01
119 #define TI_LSR_PARITY_ERROR 0x02
120 #define TI_LSR_FRAMING_ERROR 0x04
121 #define TI_LSR_BREAK 0x08
122 #define TI_LSR_ERROR 0x0F
123 #define TI_LSR_RX_FULL 0x10
124 #define TI_LSR_TX_EMPTY 0x20
125 #define TI_LSR_TX_EMPTY_BOTH 0x40
126
127 /* Line control */
128 #define TI_LCR_BREAK 0x40
129
130 /* Modem control */
131 #define TI_MCR_LOOP 0x04
132 #define TI_MCR_DTR 0x10
133 #define TI_MCR_RTS 0x20
134
135 /* Mask settings */
136 #define TI_UART_ENABLE_RTS_IN 0x0001
137 #define TI_UART_DISABLE_RTS 0x0002
138 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008
139 #define TI_UART_ENABLE_DSR_OUT 0x0010
140 #define TI_UART_ENABLE_CTS_OUT 0x0020
141 #define TI_UART_ENABLE_X_OUT 0x0040
142 #define TI_UART_ENABLE_XA_OUT 0x0080
143 #define TI_UART_ENABLE_X_IN 0x0100
144 #define TI_UART_ENABLE_DTR_IN 0x0800
145 #define TI_UART_DISABLE_DTR 0x1000
146 #define TI_UART_ENABLE_MS_INTS 0x2000
147 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000
148
149 /* Parity */
150 #define TI_UART_NO_PARITY 0x00
151 #define TI_UART_ODD_PARITY 0x01
152 #define TI_UART_EVEN_PARITY 0x02
153 #define TI_UART_MARK_PARITY 0x03
154 #define TI_UART_SPACE_PARITY 0x04
155
156 /* Stop bits */
157 #define TI_UART_1_STOP_BITS 0x00
158 #define TI_UART_1_5_STOP_BITS 0x01
159 #define TI_UART_2_STOP_BITS 0x02
160
161 /* Bits per character */
162 #define TI_UART_5_DATA_BITS 0x00
163 #define TI_UART_6_DATA_BITS 0x01
164 #define TI_UART_7_DATA_BITS 0x02
165 #define TI_UART_8_DATA_BITS 0x03
166
167 /* 232/485 modes */
168 #define TI_UART_232 0x00
169 #define TI_UART_485_RECEIVER_DISABLED 0x01
170 #define TI_UART_485_RECEIVER_ENABLED 0x02
171
172 /* Pipe transfer mode and timeout */
173 #define TI_PIPE_MODE_CONTINUOUS 0x01
174 #define TI_PIPE_MODE_MASK 0x03
175 #define TI_PIPE_TIMEOUT_MASK 0x7C
176 #define TI_PIPE_TIMEOUT_ENABLE 0x80
177
178 /* Config struct */
179 struct ti_uart_config {
180 __be16 wBaudRate;
181 __be16 wFlags;
182 u8 bDataBits;
183 u8 bParity;
184 u8 bStopBits;
185 char cXon;
186 char cXoff;
187 u8 bUartMode;
188 };
189
190 /* Get port status */
191 struct ti_port_status {
192 u8 bCmdCode;
193 u8 bModuleId;
194 u8 bErrorCode;
195 u8 bMSR;
196 u8 bLSR;
197 };
198
199 /* Purge modes */
200 #define TI_PURGE_OUTPUT 0x00
201 #define TI_PURGE_INPUT 0x80
202
203 /* Read/Write data */
204 #define TI_RW_DATA_ADDR_SFR 0x10
205 #define TI_RW_DATA_ADDR_IDATA 0x20
206 #define TI_RW_DATA_ADDR_XDATA 0x30
207 #define TI_RW_DATA_ADDR_CODE 0x40
208 #define TI_RW_DATA_ADDR_GPIO 0x50
209 #define TI_RW_DATA_ADDR_I2C 0x60
210 #define TI_RW_DATA_ADDR_FLASH 0x70
211 #define TI_RW_DATA_ADDR_DSP 0x80
212
213 #define TI_RW_DATA_UNSPECIFIED 0x00
214 #define TI_RW_DATA_BYTE 0x01
215 #define TI_RW_DATA_WORD 0x02
216 #define TI_RW_DATA_DOUBLE_WORD 0x04
217
218 struct ti_write_data_bytes {
219 u8 bAddrType;
220 u8 bDataType;
221 u8 bDataCounter;
222 __be16 wBaseAddrHi;
223 __be16 wBaseAddrLo;
224 u8 bData[];
225 } __packed;
226
227 struct ti_read_data_request {
228 u8 bAddrType;
229 u8 bDataType;
230 u8 bDataCounter;
231 __be16 wBaseAddrHi;
232 __be16 wBaseAddrLo;
233 } __packed;
234
235 struct ti_read_data_bytes {
236 u8 bCmdCode;
237 u8 bModuleId;
238 u8 bErrorCode;
239 u8 bData[];
240 };
241
242 /* Interrupt struct */
243 struct ti_interrupt {
244 u8 bICode;
245 u8 bIInfo;
246 };
247
248 /* Interrupt codes */
249 #define TI_CODE_HARDWARE_ERROR 0xFF
250 #define TI_CODE_DATA_ERROR 0x03
251 #define TI_CODE_MODEM_STATUS 0x04
252
253 /* Download firmware max packet size */
254 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64
255
256 /* Firmware image header */
257 struct ti_firmware_header {
258 __le16 wLength;
259 u8 bCheckSum;
260 } __packed;
261
262 /* UART addresses */
263 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
264 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
265 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
266 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
267
268 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
269 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
270
271 #define TI_FIRMWARE_BUF_SIZE 16284
272
273 #define TI_TRANSFER_TIMEOUT 2
274
275 /* read urb states */
276 #define TI_READ_URB_RUNNING 0
277 #define TI_READ_URB_STOPPING 1
278 #define TI_READ_URB_STOPPED 2
279
280 #define TI_EXTRA_VID_PID_COUNT 5
281
282 struct ti_port {
283 int tp_is_open;
284 u8 tp_msr;
285 u8 tp_shadow_mcr;
286 u8 tp_uart_mode; /* 232 or 485 modes */
287 unsigned int tp_uart_base_addr;
288 struct ti_device *tp_tdev;
289 struct usb_serial_port *tp_port;
290 spinlock_t tp_lock;
291 int tp_read_urb_state;
292 int tp_write_urb_in_use;
293 };
294
295 struct ti_device {
296 struct mutex td_open_close_lock;
297 int td_open_port_count;
298 struct usb_serial *td_serial;
299 int td_is_3410;
300 bool td_rs485_only;
301 };
302
303 static int ti_startup(struct usb_serial *serial);
304 static void ti_release(struct usb_serial *serial);
305 static int ti_port_probe(struct usb_serial_port *port);
306 static void ti_port_remove(struct usb_serial_port *port);
307 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
308 static void ti_close(struct usb_serial_port *port);
309 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
310 const unsigned char *data, int count);
311 static unsigned int ti_write_room(struct tty_struct *tty);
312 static unsigned int ti_chars_in_buffer(struct tty_struct *tty);
313 static bool ti_tx_empty(struct usb_serial_port *port);
314 static void ti_throttle(struct tty_struct *tty);
315 static void ti_unthrottle(struct tty_struct *tty);
316 static void ti_set_termios(struct tty_struct *tty,
317 struct usb_serial_port *port,
318 const struct ktermios *old_termios);
319 static int ti_tiocmget(struct tty_struct *tty);
320 static int ti_tiocmset(struct tty_struct *tty,
321 unsigned int set, unsigned int clear);
322 static void ti_break(struct tty_struct *tty, int break_state);
323 static void ti_interrupt_callback(struct urb *urb);
324 static void ti_bulk_in_callback(struct urb *urb);
325 static void ti_bulk_out_callback(struct urb *urb);
326
327 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
328 int length);
329 static void ti_send(struct ti_port *tport);
330 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
331 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
332 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss);
333 static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
334
335 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
336 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
337
338 static int ti_command_out_sync(struct usb_device *udev, u8 command,
339 u16 moduleid, u16 value, void *data, int size);
340 static int ti_command_in_sync(struct usb_device *udev, u8 command,
341 u16 moduleid, u16 value, void *data, int size);
342 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
343 u16 value, void *data, int size);
344 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
345 u16 value, void *data, int size);
346
347 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
348 unsigned long addr, u8 mask, u8 byte);
349
350 static int ti_download_firmware(struct ti_device *tdev);
351
352 static const struct usb_device_id ti_id_table_3410[] = {
353 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
354 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
355 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
356 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
357 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
358 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
359 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
361 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
362 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
363 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
364 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
365 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
366 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
367 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
368 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
369 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
374 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
375 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) },
376 { } /* terminator */
377 };
378
379 static const struct usb_device_id ti_id_table_5052[] = {
380 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
381 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
383 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
384 { }
385 };
386
387 static const struct usb_device_id ti_id_table_combined[] = {
388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
389 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
390 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
392 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
393 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
394 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
397 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
398 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
399 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
401 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
402 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
404 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
406 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
407 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
408 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
413 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
414 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) },
415 { } /* terminator */
416 };
417
418 static struct usb_serial_driver ti_1port_device = {
419 .driver = {
420 .owner = THIS_MODULE,
421 .name = "ti_usb_3410_5052_1",
422 },
423 .description = "TI USB 3410 1 port adapter",
424 .id_table = ti_id_table_3410,
425 .num_ports = 1,
426 .num_bulk_out = 1,
427 .attach = ti_startup,
428 .release = ti_release,
429 .port_probe = ti_port_probe,
430 .port_remove = ti_port_remove,
431 .open = ti_open,
432 .close = ti_close,
433 .write = ti_write,
434 .write_room = ti_write_room,
435 .chars_in_buffer = ti_chars_in_buffer,
436 .tx_empty = ti_tx_empty,
437 .throttle = ti_throttle,
438 .unthrottle = ti_unthrottle,
439 .get_serial = ti_get_serial_info,
440 .set_termios = ti_set_termios,
441 .tiocmget = ti_tiocmget,
442 .tiocmset = ti_tiocmset,
443 .tiocmiwait = usb_serial_generic_tiocmiwait,
444 .get_icount = usb_serial_generic_get_icount,
445 .break_ctl = ti_break,
446 .read_int_callback = ti_interrupt_callback,
447 .read_bulk_callback = ti_bulk_in_callback,
448 .write_bulk_callback = ti_bulk_out_callback,
449 };
450
451 static struct usb_serial_driver ti_2port_device = {
452 .driver = {
453 .owner = THIS_MODULE,
454 .name = "ti_usb_3410_5052_2",
455 },
456 .description = "TI USB 5052 2 port adapter",
457 .id_table = ti_id_table_5052,
458 .num_ports = 2,
459 .num_bulk_out = 1,
460 .attach = ti_startup,
461 .release = ti_release,
462 .port_probe = ti_port_probe,
463 .port_remove = ti_port_remove,
464 .open = ti_open,
465 .close = ti_close,
466 .write = ti_write,
467 .write_room = ti_write_room,
468 .chars_in_buffer = ti_chars_in_buffer,
469 .tx_empty = ti_tx_empty,
470 .throttle = ti_throttle,
471 .unthrottle = ti_unthrottle,
472 .get_serial = ti_get_serial_info,
473 .set_termios = ti_set_termios,
474 .tiocmget = ti_tiocmget,
475 .tiocmset = ti_tiocmset,
476 .tiocmiwait = usb_serial_generic_tiocmiwait,
477 .get_icount = usb_serial_generic_get_icount,
478 .break_ctl = ti_break,
479 .read_int_callback = ti_interrupt_callback,
480 .read_bulk_callback = ti_bulk_in_callback,
481 .write_bulk_callback = ti_bulk_out_callback,
482 };
483
484 static struct usb_serial_driver * const serial_drivers[] = {
485 &ti_1port_device, &ti_2port_device, NULL
486 };
487
488 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
489 MODULE_DESCRIPTION(TI_DRIVER_DESC);
490 MODULE_LICENSE("GPL");
491
492 MODULE_FIRMWARE("ti_3410.fw");
493 MODULE_FIRMWARE("ti_5052.fw");
494 MODULE_FIRMWARE("mts_cdma.fw");
495 MODULE_FIRMWARE("mts_gsm.fw");
496 MODULE_FIRMWARE("mts_edge.fw");
497 MODULE_FIRMWARE("mts_mt9234mu.fw");
498 MODULE_FIRMWARE("mts_mt9234zba.fw");
499 MODULE_FIRMWARE("moxa/moxa-1110.fw");
500 MODULE_FIRMWARE("moxa/moxa-1130.fw");
501 MODULE_FIRMWARE("moxa/moxa-1131.fw");
502 MODULE_FIRMWARE("moxa/moxa-1150.fw");
503 MODULE_FIRMWARE("moxa/moxa-1151.fw");
504
505 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
506
507 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
508
ti_startup(struct usb_serial * serial)509 static int ti_startup(struct usb_serial *serial)
510 {
511 struct ti_device *tdev;
512 struct usb_device *dev = serial->dev;
513 struct usb_host_interface *cur_altsetting;
514 int num_endpoints;
515 u16 vid, pid;
516 int status;
517
518 dev_dbg(&dev->dev,
519 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
520 __func__, le16_to_cpu(dev->descriptor.idProduct),
521 dev->descriptor.bNumConfigurations,
522 dev->actconfig->desc.bConfigurationValue);
523
524 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
525 if (!tdev)
526 return -ENOMEM;
527
528 mutex_init(&tdev->td_open_close_lock);
529 tdev->td_serial = serial;
530 usb_set_serial_data(serial, tdev);
531
532 /* determine device type */
533 if (serial->type == &ti_1port_device)
534 tdev->td_is_3410 = 1;
535 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
536 tdev->td_is_3410 ? "3410" : "5052");
537
538 vid = le16_to_cpu(dev->descriptor.idVendor);
539 pid = le16_to_cpu(dev->descriptor.idProduct);
540 if (vid == MXU1_VENDOR_ID) {
541 switch (pid) {
542 case MXU1_1130_PRODUCT_ID:
543 case MXU1_1131_PRODUCT_ID:
544 tdev->td_rs485_only = true;
545 break;
546 }
547 }
548
549 cur_altsetting = serial->interface->cur_altsetting;
550 num_endpoints = cur_altsetting->desc.bNumEndpoints;
551
552 /* if we have only 1 configuration and 1 endpoint, download firmware */
553 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
554 status = ti_download_firmware(tdev);
555
556 if (status != 0)
557 goto free_tdev;
558
559 /* 3410 must be reset, 5052 resets itself */
560 if (tdev->td_is_3410) {
561 msleep_interruptible(100);
562 usb_reset_device(dev);
563 }
564
565 status = -ENODEV;
566 goto free_tdev;
567 }
568
569 /* the second configuration must be set */
570 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
571 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
572 status = status ? status : -ENODEV;
573 goto free_tdev;
574 }
575
576 if (serial->num_bulk_in < serial->num_ports ||
577 serial->num_bulk_out < serial->num_ports) {
578 dev_err(&serial->interface->dev, "missing endpoints\n");
579 status = -ENODEV;
580 goto free_tdev;
581 }
582
583 return 0;
584
585 free_tdev:
586 kfree(tdev);
587 usb_set_serial_data(serial, NULL);
588 return status;
589 }
590
591
ti_release(struct usb_serial * serial)592 static void ti_release(struct usb_serial *serial)
593 {
594 struct ti_device *tdev = usb_get_serial_data(serial);
595
596 kfree(tdev);
597 }
598
ti_port_probe(struct usb_serial_port * port)599 static int ti_port_probe(struct usb_serial_port *port)
600 {
601 struct ti_port *tport;
602
603 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
604 if (!tport)
605 return -ENOMEM;
606
607 spin_lock_init(&tport->tp_lock);
608 if (port == port->serial->port[0])
609 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
610 else
611 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
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 /*
623 * The TUSB5052 LSR does not tell when the transmitter shift register
624 * has emptied so add a one-character drain delay.
625 */
626 if (!tport->tp_tdev->td_is_3410)
627 port->port.drain_delay = 1;
628
629 return 0;
630 }
631
ti_port_remove(struct usb_serial_port * port)632 static void ti_port_remove(struct usb_serial_port *port)
633 {
634 struct ti_port *tport;
635
636 tport = usb_get_serial_port_data(port);
637 kfree(tport);
638 }
639
ti_open(struct tty_struct * tty,struct usb_serial_port * port)640 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
641 {
642 struct ti_port *tport = usb_get_serial_port_data(port);
643 struct ti_device *tdev;
644 struct usb_device *dev;
645 struct urb *urb;
646 int status;
647 u16 open_settings;
648
649 open_settings = (TI_PIPE_MODE_CONTINUOUS |
650 TI_PIPE_TIMEOUT_ENABLE |
651 (TI_TRANSFER_TIMEOUT << 2));
652
653 dev = port->serial->dev;
654 tdev = tport->tp_tdev;
655
656 /* only one open on any port on a device at a time */
657 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
658 return -ERESTARTSYS;
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_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
684 if (status) {
685 dev_err(&port->dev, "%s - cannot send open command, %d\n",
686 __func__, status);
687 goto unlink_int_urb;
688 }
689
690 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
691 if (status) {
692 dev_err(&port->dev, "%s - cannot send start command, %d\n",
693 __func__, status);
694 goto unlink_int_urb;
695 }
696
697 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0);
698 if (status) {
699 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
700 __func__, status);
701 goto unlink_int_urb;
702 }
703 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0);
704 if (status) {
705 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
706 __func__, status);
707 goto unlink_int_urb;
708 }
709
710 /* reset the data toggle on the bulk endpoints to work around bug in
711 * host controllers where things get out of sync some times */
712 usb_clear_halt(dev, port->write_urb->pipe);
713 usb_clear_halt(dev, port->read_urb->pipe);
714
715 if (tty)
716 ti_set_termios(tty, port, &tty->termios);
717
718 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
719 if (status) {
720 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
721 __func__, status);
722 goto unlink_int_urb;
723 }
724
725 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
726 if (status) {
727 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
728 __func__, status);
729 goto unlink_int_urb;
730 }
731
732 /* start read urb */
733 urb = port->read_urb;
734 if (!urb) {
735 dev_err(&port->dev, "%s - no read urb\n", __func__);
736 status = -EINVAL;
737 goto unlink_int_urb;
738 }
739 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
740 urb->context = tport;
741 status = usb_submit_urb(urb, GFP_KERNEL);
742 if (status) {
743 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
744 __func__, status);
745 goto unlink_int_urb;
746 }
747
748 tport->tp_is_open = 1;
749 ++tdev->td_open_port_count;
750
751 goto release_lock;
752
753 unlink_int_urb:
754 if (tdev->td_open_port_count == 0)
755 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
756 release_lock:
757 mutex_unlock(&tdev->td_open_close_lock);
758 return status;
759 }
760
761
ti_close(struct usb_serial_port * port)762 static void ti_close(struct usb_serial_port *port)
763 {
764 struct ti_device *tdev;
765 struct ti_port *tport;
766 int status;
767 unsigned long flags;
768
769 tdev = usb_get_serial_data(port->serial);
770 tport = usb_get_serial_port_data(port);
771
772 tport->tp_is_open = 0;
773
774 usb_kill_urb(port->read_urb);
775 usb_kill_urb(port->write_urb);
776 tport->tp_write_urb_in_use = 0;
777 spin_lock_irqsave(&tport->tp_lock, flags);
778 kfifo_reset_out(&port->write_fifo);
779 spin_unlock_irqrestore(&tport->tp_lock, flags);
780
781 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0);
782 if (status)
783 dev_err(&port->dev,
784 "%s - cannot send close port command, %d\n"
785 , __func__, status);
786
787 mutex_lock(&tdev->td_open_close_lock);
788 --tdev->td_open_port_count;
789 if (tdev->td_open_port_count == 0) {
790 /* last port is closed, shut down interrupt urb */
791 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
792 }
793 mutex_unlock(&tdev->td_open_close_lock);
794 }
795
796
ti_write(struct tty_struct * tty,struct usb_serial_port * port,const unsigned char * data,int count)797 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
798 const unsigned char *data, int count)
799 {
800 struct ti_port *tport = usb_get_serial_port_data(port);
801
802 if (count == 0) {
803 return 0;
804 }
805
806 if (!tport->tp_is_open)
807 return -ENODEV;
808
809 count = kfifo_in_locked(&port->write_fifo, data, count,
810 &tport->tp_lock);
811 ti_send(tport);
812
813 return count;
814 }
815
816
ti_write_room(struct tty_struct * tty)817 static unsigned int ti_write_room(struct tty_struct *tty)
818 {
819 struct usb_serial_port *port = tty->driver_data;
820 struct ti_port *tport = usb_get_serial_port_data(port);
821 unsigned int room;
822 unsigned long flags;
823
824 spin_lock_irqsave(&tport->tp_lock, flags);
825 room = kfifo_avail(&port->write_fifo);
826 spin_unlock_irqrestore(&tport->tp_lock, flags);
827
828 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
829 return room;
830 }
831
832
ti_chars_in_buffer(struct tty_struct * tty)833 static unsigned int ti_chars_in_buffer(struct tty_struct *tty)
834 {
835 struct usb_serial_port *port = tty->driver_data;
836 struct ti_port *tport = usb_get_serial_port_data(port);
837 unsigned int chars;
838 unsigned long flags;
839
840 spin_lock_irqsave(&tport->tp_lock, flags);
841 chars = kfifo_len(&port->write_fifo);
842 spin_unlock_irqrestore(&tport->tp_lock, flags);
843
844 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars);
845 return chars;
846 }
847
ti_tx_empty(struct usb_serial_port * port)848 static bool ti_tx_empty(struct usb_serial_port *port)
849 {
850 struct ti_port *tport = usb_get_serial_port_data(port);
851 u8 lsr, mask;
852 int ret;
853
854 /*
855 * TUSB5052 does not have the TEMT bit to tell if the shift register
856 * is empty.
857 */
858 if (tport->tp_tdev->td_is_3410)
859 mask = TI_LSR_TX_EMPTY_BOTH;
860 else
861 mask = TI_LSR_TX_EMPTY;
862
863 ret = ti_get_lsr(tport, &lsr);
864 if (!ret && !(lsr & mask))
865 return false;
866
867 return true;
868 }
869
ti_throttle(struct tty_struct * tty)870 static void ti_throttle(struct tty_struct *tty)
871 {
872 struct usb_serial_port *port = tty->driver_data;
873 struct ti_port *tport = usb_get_serial_port_data(port);
874
875 if (I_IXOFF(tty) || C_CRTSCTS(tty))
876 ti_stop_read(tport, tty);
877
878 }
879
880
ti_unthrottle(struct tty_struct * tty)881 static void ti_unthrottle(struct tty_struct *tty)
882 {
883 struct usb_serial_port *port = tty->driver_data;
884 struct ti_port *tport = usb_get_serial_port_data(port);
885 int status;
886
887 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
888 status = ti_restart_read(tport, tty);
889 if (status)
890 dev_err(&port->dev, "%s - cannot restart read, %d\n",
891 __func__, status);
892 }
893 }
894
ti_set_termios(struct tty_struct * tty,struct usb_serial_port * port,const struct ktermios * old_termios)895 static void ti_set_termios(struct tty_struct *tty,
896 struct usb_serial_port *port,
897 const struct ktermios *old_termios)
898 {
899 struct ti_port *tport = usb_get_serial_port_data(port);
900 struct ti_uart_config *config;
901 int baud;
902 int status;
903 unsigned int mcr;
904 u16 wbaudrate;
905 u16 wflags = 0;
906
907 config = kmalloc(sizeof(*config), GFP_KERNEL);
908 if (!config)
909 return;
910
911 /* these flags must be set */
912 wflags |= TI_UART_ENABLE_MS_INTS;
913 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
914 config->bUartMode = tport->tp_uart_mode;
915
916 switch (C_CSIZE(tty)) {
917 case CS5:
918 config->bDataBits = TI_UART_5_DATA_BITS;
919 break;
920 case CS6:
921 config->bDataBits = TI_UART_6_DATA_BITS;
922 break;
923 case CS7:
924 config->bDataBits = TI_UART_7_DATA_BITS;
925 break;
926 default:
927 case CS8:
928 config->bDataBits = TI_UART_8_DATA_BITS;
929 break;
930 }
931
932 /* CMSPAR isn't supported by this driver */
933 tty->termios.c_cflag &= ~CMSPAR;
934
935 if (C_PARENB(tty)) {
936 if (C_PARODD(tty)) {
937 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
938 config->bParity = TI_UART_ODD_PARITY;
939 } else {
940 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
941 config->bParity = TI_UART_EVEN_PARITY;
942 }
943 } else {
944 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
945 config->bParity = TI_UART_NO_PARITY;
946 }
947
948 if (C_CSTOPB(tty))
949 config->bStopBits = TI_UART_2_STOP_BITS;
950 else
951 config->bStopBits = TI_UART_1_STOP_BITS;
952
953 if (C_CRTSCTS(tty)) {
954 /* RTS flow control must be off to drop RTS for baud rate B0 */
955 if ((C_BAUD(tty)) != B0)
956 wflags |= TI_UART_ENABLE_RTS_IN;
957 wflags |= TI_UART_ENABLE_CTS_OUT;
958 } else {
959 ti_restart_read(tport, tty);
960 }
961
962 if (I_IXOFF(tty) || I_IXON(tty)) {
963 config->cXon = START_CHAR(tty);
964 config->cXoff = STOP_CHAR(tty);
965
966 if (I_IXOFF(tty))
967 wflags |= TI_UART_ENABLE_X_IN;
968 else
969 ti_restart_read(tport, tty);
970
971 if (I_IXON(tty))
972 wflags |= TI_UART_ENABLE_X_OUT;
973 }
974
975 baud = tty_get_baud_rate(tty);
976 if (!baud)
977 baud = 9600;
978 if (tport->tp_tdev->td_is_3410)
979 wbaudrate = (923077 + baud/2) / baud;
980 else
981 wbaudrate = (461538 + baud/2) / baud;
982
983 /* FIXME: Should calculate resulting baud here and report it back */
984 if ((C_BAUD(tty)) != B0)
985 tty_encode_baud_rate(tty, baud, baud);
986
987 dev_dbg(&port->dev,
988 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
989 __func__, baud, wbaudrate, wflags,
990 config->bDataBits, config->bParity, config->bStopBits,
991 config->cXon, config->cXoff, config->bUartMode);
992
993 config->wBaudRate = cpu_to_be16(wbaudrate);
994 config->wFlags = cpu_to_be16(wflags);
995
996 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config,
997 sizeof(*config));
998 if (status)
999 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1000 __func__, port->port_number, status);
1001
1002 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1003 mcr = tport->tp_shadow_mcr;
1004 /* if baud rate is B0, clear RTS and DTR */
1005 if (C_BAUD(tty) == B0)
1006 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1007 status = ti_set_mcr(tport, mcr);
1008 if (status)
1009 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n",
1010 __func__, port->port_number, status);
1011
1012 kfree(config);
1013 }
1014
1015
ti_tiocmget(struct tty_struct * tty)1016 static int ti_tiocmget(struct tty_struct *tty)
1017 {
1018 struct usb_serial_port *port = tty->driver_data;
1019 struct ti_port *tport = usb_get_serial_port_data(port);
1020 unsigned int result;
1021 unsigned int msr;
1022 unsigned int mcr;
1023 unsigned long flags;
1024
1025 spin_lock_irqsave(&tport->tp_lock, flags);
1026 msr = tport->tp_msr;
1027 mcr = tport->tp_shadow_mcr;
1028 spin_unlock_irqrestore(&tport->tp_lock, flags);
1029
1030 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1031 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1032 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1033 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1034 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1035 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1036 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1037
1038 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1039
1040 return result;
1041 }
1042
1043
ti_tiocmset(struct tty_struct * tty,unsigned int set,unsigned int clear)1044 static int ti_tiocmset(struct tty_struct *tty,
1045 unsigned int set, unsigned int clear)
1046 {
1047 struct usb_serial_port *port = tty->driver_data;
1048 struct ti_port *tport = usb_get_serial_port_data(port);
1049 unsigned int mcr;
1050 unsigned long flags;
1051
1052 spin_lock_irqsave(&tport->tp_lock, flags);
1053 mcr = tport->tp_shadow_mcr;
1054
1055 if (set & TIOCM_RTS)
1056 mcr |= TI_MCR_RTS;
1057 if (set & TIOCM_DTR)
1058 mcr |= TI_MCR_DTR;
1059 if (set & TIOCM_LOOP)
1060 mcr |= TI_MCR_LOOP;
1061
1062 if (clear & TIOCM_RTS)
1063 mcr &= ~TI_MCR_RTS;
1064 if (clear & TIOCM_DTR)
1065 mcr &= ~TI_MCR_DTR;
1066 if (clear & TIOCM_LOOP)
1067 mcr &= ~TI_MCR_LOOP;
1068 spin_unlock_irqrestore(&tport->tp_lock, flags);
1069
1070 return ti_set_mcr(tport, mcr);
1071 }
1072
1073
ti_break(struct tty_struct * tty,int break_state)1074 static void ti_break(struct tty_struct *tty, int break_state)
1075 {
1076 struct usb_serial_port *port = tty->driver_data;
1077 struct ti_port *tport = usb_get_serial_port_data(port);
1078 int status;
1079
1080 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1081
1082 status = ti_write_byte(port, tport->tp_tdev,
1083 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1084 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1085
1086 if (status)
1087 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1088 }
1089
ti_get_port_from_code(unsigned char code)1090 static int ti_get_port_from_code(unsigned char code)
1091 {
1092 return (code >> 6) & 0x01;
1093 }
1094
ti_get_func_from_code(unsigned char code)1095 static int ti_get_func_from_code(unsigned char code)
1096 {
1097 return code & 0x0f;
1098 }
1099
ti_interrupt_callback(struct urb * urb)1100 static void ti_interrupt_callback(struct urb *urb)
1101 {
1102 struct ti_device *tdev = urb->context;
1103 struct usb_serial_port *port;
1104 struct usb_serial *serial = tdev->td_serial;
1105 struct ti_port *tport;
1106 struct device *dev = &urb->dev->dev;
1107 unsigned char *data = urb->transfer_buffer;
1108 int length = urb->actual_length;
1109 int port_number;
1110 int function;
1111 int status = urb->status;
1112 int retval;
1113 u8 msr;
1114
1115 switch (status) {
1116 case 0:
1117 break;
1118 case -ECONNRESET:
1119 case -ENOENT:
1120 case -ESHUTDOWN:
1121 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1122 return;
1123 default:
1124 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1125 goto exit;
1126 }
1127
1128 if (length != 2) {
1129 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1130 goto exit;
1131 }
1132
1133 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1134 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1135 goto exit;
1136 }
1137
1138 port_number = ti_get_port_from_code(data[0]);
1139 function = ti_get_func_from_code(data[0]);
1140
1141 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1142 __func__, port_number, function, data[1]);
1143
1144 if (port_number >= serial->num_ports) {
1145 dev_err(dev, "%s - bad port number, %d\n",
1146 __func__, port_number);
1147 goto exit;
1148 }
1149
1150 port = serial->port[port_number];
1151
1152 tport = usb_get_serial_port_data(port);
1153 if (!tport)
1154 goto exit;
1155
1156 switch (function) {
1157 case TI_CODE_DATA_ERROR:
1158 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1159 __func__, port_number, data[1]);
1160 break;
1161
1162 case TI_CODE_MODEM_STATUS:
1163 msr = data[1];
1164 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1165 ti_handle_new_msr(tport, msr);
1166 break;
1167
1168 default:
1169 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1170 __func__, data[1]);
1171 break;
1172 }
1173
1174 exit:
1175 retval = usb_submit_urb(urb, GFP_ATOMIC);
1176 if (retval)
1177 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1178 __func__, retval);
1179 }
1180
1181
ti_bulk_in_callback(struct urb * urb)1182 static void ti_bulk_in_callback(struct urb *urb)
1183 {
1184 struct ti_port *tport = urb->context;
1185 struct usb_serial_port *port = tport->tp_port;
1186 struct device *dev = &urb->dev->dev;
1187 int status = urb->status;
1188 unsigned long flags;
1189 int retval = 0;
1190
1191 switch (status) {
1192 case 0:
1193 break;
1194 case -ECONNRESET:
1195 case -ENOENT:
1196 case -ESHUTDOWN:
1197 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1198 return;
1199 default:
1200 dev_err(dev, "%s - nonzero urb status, %d\n",
1201 __func__, status);
1202 }
1203
1204 if (status == -EPIPE)
1205 goto exit;
1206
1207 if (status) {
1208 dev_err(dev, "%s - stopping read!\n", __func__);
1209 return;
1210 }
1211
1212 if (urb->actual_length) {
1213 usb_serial_debug_data(dev, __func__, urb->actual_length,
1214 urb->transfer_buffer);
1215
1216 if (!tport->tp_is_open)
1217 dev_dbg(dev, "%s - port closed, dropping data\n",
1218 __func__);
1219 else
1220 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1221 spin_lock_irqsave(&tport->tp_lock, flags);
1222 port->icount.rx += urb->actual_length;
1223 spin_unlock_irqrestore(&tport->tp_lock, flags);
1224 }
1225
1226 exit:
1227 /* continue to read unless stopping */
1228 spin_lock_irqsave(&tport->tp_lock, flags);
1229 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1230 retval = usb_submit_urb(urb, GFP_ATOMIC);
1231 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1232 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1233
1234 spin_unlock_irqrestore(&tport->tp_lock, flags);
1235 if (retval)
1236 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1237 __func__, retval);
1238 }
1239
1240
ti_bulk_out_callback(struct urb * urb)1241 static void ti_bulk_out_callback(struct urb *urb)
1242 {
1243 struct ti_port *tport = urb->context;
1244 struct usb_serial_port *port = tport->tp_port;
1245 int status = urb->status;
1246
1247 tport->tp_write_urb_in_use = 0;
1248
1249 switch (status) {
1250 case 0:
1251 break;
1252 case -ECONNRESET:
1253 case -ENOENT:
1254 case -ESHUTDOWN:
1255 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1256 return;
1257 default:
1258 dev_err_console(port, "%s - nonzero urb status, %d\n",
1259 __func__, status);
1260 }
1261
1262 /* send any buffered data */
1263 ti_send(tport);
1264 }
1265
1266
ti_recv(struct usb_serial_port * port,unsigned char * data,int length)1267 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1268 int length)
1269 {
1270 int cnt;
1271
1272 do {
1273 cnt = tty_insert_flip_string(&port->port, data, length);
1274 if (cnt < length) {
1275 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1276 __func__, length - cnt);
1277 if (cnt == 0)
1278 break;
1279 }
1280 tty_flip_buffer_push(&port->port);
1281 data += cnt;
1282 length -= cnt;
1283 } while (length > 0);
1284 }
1285
1286
ti_send(struct ti_port * tport)1287 static void ti_send(struct ti_port *tport)
1288 {
1289 int count, result;
1290 struct usb_serial_port *port = tport->tp_port;
1291 unsigned long flags;
1292
1293 spin_lock_irqsave(&tport->tp_lock, flags);
1294
1295 if (tport->tp_write_urb_in_use)
1296 goto unlock;
1297
1298 count = kfifo_out(&port->write_fifo,
1299 port->write_urb->transfer_buffer,
1300 port->bulk_out_size);
1301
1302 if (count == 0)
1303 goto unlock;
1304
1305 tport->tp_write_urb_in_use = 1;
1306
1307 spin_unlock_irqrestore(&tport->tp_lock, flags);
1308
1309 usb_serial_debug_data(&port->dev, __func__, count,
1310 port->write_urb->transfer_buffer);
1311
1312 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1313 usb_sndbulkpipe(port->serial->dev,
1314 port->bulk_out_endpointAddress),
1315 port->write_urb->transfer_buffer, count,
1316 ti_bulk_out_callback, tport);
1317
1318 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1319 if (result) {
1320 dev_err_console(port, "%s - submit write urb failed, %d\n",
1321 __func__, result);
1322 tport->tp_write_urb_in_use = 0;
1323 /* TODO: reschedule ti_send */
1324 } else {
1325 spin_lock_irqsave(&tport->tp_lock, flags);
1326 port->icount.tx += count;
1327 spin_unlock_irqrestore(&tport->tp_lock, flags);
1328 }
1329
1330 /* more room in the buffer for new writes, wakeup */
1331 tty_port_tty_wakeup(&port->port);
1332
1333 return;
1334 unlock:
1335 spin_unlock_irqrestore(&tport->tp_lock, flags);
1336 return;
1337 }
1338
1339
ti_set_mcr(struct ti_port * tport,unsigned int mcr)1340 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1341 {
1342 unsigned long flags;
1343 int status;
1344
1345 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1346 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1347 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1348
1349 spin_lock_irqsave(&tport->tp_lock, flags);
1350 if (!status)
1351 tport->tp_shadow_mcr = mcr;
1352 spin_unlock_irqrestore(&tport->tp_lock, flags);
1353
1354 return status;
1355 }
1356
1357
ti_get_lsr(struct ti_port * tport,u8 * lsr)1358 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1359 {
1360 int size, status;
1361 struct usb_serial_port *port = tport->tp_port;
1362 struct ti_port_status *data;
1363
1364 size = sizeof(struct ti_port_status);
1365 data = kmalloc(size, GFP_KERNEL);
1366 if (!data)
1367 return -ENOMEM;
1368
1369 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size);
1370 if (status) {
1371 dev_err(&port->dev,
1372 "%s - get port status command failed, %d\n",
1373 __func__, status);
1374 goto free_data;
1375 }
1376
1377 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1378
1379 *lsr = data->bLSR;
1380
1381 free_data:
1382 kfree(data);
1383 return status;
1384 }
1385
1386
ti_get_serial_info(struct tty_struct * tty,struct serial_struct * ss)1387 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss)
1388 {
1389 struct usb_serial_port *port = tty->driver_data;
1390 struct ti_port *tport = usb_get_serial_port_data(port);
1391
1392 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1393 }
1394
1395
ti_handle_new_msr(struct ti_port * tport,u8 msr)1396 static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1397 {
1398 struct async_icount *icount;
1399 struct tty_struct *tty;
1400 unsigned long flags;
1401
1402 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1403
1404 if (msr & TI_MSR_DELTA_MASK) {
1405 spin_lock_irqsave(&tport->tp_lock, flags);
1406 icount = &tport->tp_port->icount;
1407 if (msr & TI_MSR_DELTA_CTS)
1408 icount->cts++;
1409 if (msr & TI_MSR_DELTA_DSR)
1410 icount->dsr++;
1411 if (msr & TI_MSR_DELTA_CD)
1412 icount->dcd++;
1413 if (msr & TI_MSR_DELTA_RI)
1414 icount->rng++;
1415 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1416 spin_unlock_irqrestore(&tport->tp_lock, flags);
1417 }
1418
1419 tport->tp_msr = msr & TI_MSR_MASK;
1420
1421 /* handle CTS flow control */
1422 tty = tty_port_tty_get(&tport->tp_port->port);
1423 if (tty && C_CRTSCTS(tty)) {
1424 if (msr & TI_MSR_CTS)
1425 tty_wakeup(tty);
1426 }
1427 tty_kref_put(tty);
1428 }
1429
1430
ti_stop_read(struct ti_port * tport,struct tty_struct * tty)1431 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1432 {
1433 unsigned long flags;
1434
1435 spin_lock_irqsave(&tport->tp_lock, flags);
1436
1437 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1438 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1439
1440 spin_unlock_irqrestore(&tport->tp_lock, flags);
1441 }
1442
1443
ti_restart_read(struct ti_port * tport,struct tty_struct * tty)1444 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1445 {
1446 struct urb *urb;
1447 int status = 0;
1448 unsigned long flags;
1449
1450 spin_lock_irqsave(&tport->tp_lock, flags);
1451
1452 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1453 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1454 urb = tport->tp_port->read_urb;
1455 spin_unlock_irqrestore(&tport->tp_lock, flags);
1456 urb->context = tport;
1457 status = usb_submit_urb(urb, GFP_KERNEL);
1458 } else {
1459 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1460 spin_unlock_irqrestore(&tport->tp_lock, flags);
1461 }
1462
1463 return status;
1464 }
1465
ti_command_out_sync(struct usb_device * udev,u8 command,u16 moduleid,u16 value,void * data,int size)1466 static int ti_command_out_sync(struct usb_device *udev, u8 command,
1467 u16 moduleid, u16 value, void *data, int size)
1468 {
1469 int status;
1470
1471 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command,
1472 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
1473 value, moduleid, data, size, 1000);
1474 if (status < 0)
1475 return status;
1476
1477 return 0;
1478 }
1479
ti_command_in_sync(struct usb_device * udev,u8 command,u16 moduleid,u16 value,void * data,int size)1480 static int ti_command_in_sync(struct usb_device *udev, u8 command,
1481 u16 moduleid, u16 value, void *data, int size)
1482 {
1483 int status;
1484
1485 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command,
1486 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
1487 value, moduleid, data, size, 1000);
1488 if (status == size)
1489 status = 0;
1490 else if (status >= 0)
1491 status = -ECOMM;
1492
1493 return status;
1494 }
1495
ti_port_cmd_out(struct usb_serial_port * port,u8 command,u16 value,void * data,int size)1496 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
1497 u16 value, void *data, int size)
1498 {
1499 return ti_command_out_sync(port->serial->dev, command,
1500 TI_UART1_PORT + port->port_number,
1501 value, data, size);
1502 }
1503
ti_port_cmd_in(struct usb_serial_port * port,u8 command,u16 value,void * data,int size)1504 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
1505 u16 value, void *data, int size)
1506 {
1507 return ti_command_in_sync(port->serial->dev, command,
1508 TI_UART1_PORT + port->port_number,
1509 value, data, size);
1510 }
1511
ti_write_byte(struct usb_serial_port * port,struct ti_device * tdev,unsigned long addr,u8 mask,u8 byte)1512 static int ti_write_byte(struct usb_serial_port *port,
1513 struct ti_device *tdev, unsigned long addr,
1514 u8 mask, u8 byte)
1515 {
1516 int status;
1517 unsigned int size;
1518 struct ti_write_data_bytes *data;
1519
1520 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1521 addr, mask, byte);
1522
1523 size = sizeof(struct ti_write_data_bytes) + 2;
1524 data = kmalloc(size, GFP_KERNEL);
1525 if (!data)
1526 return -ENOMEM;
1527
1528 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1529 data->bDataType = TI_RW_DATA_BYTE;
1530 data->bDataCounter = 1;
1531 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1532 data->wBaseAddrLo = cpu_to_be16(addr);
1533 data->bData[0] = mask;
1534 data->bData[1] = byte;
1535
1536 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA,
1537 TI_RAM_PORT, 0, data, size);
1538 if (status < 0)
1539 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1540
1541 kfree(data);
1542
1543 return status;
1544 }
1545
ti_do_download(struct usb_device * dev,int pipe,u8 * buffer,int size)1546 static int ti_do_download(struct usb_device *dev, int pipe,
1547 u8 *buffer, int size)
1548 {
1549 int pos;
1550 u8 cs = 0;
1551 int done;
1552 struct ti_firmware_header *header;
1553 int status = 0;
1554 int len;
1555
1556 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1557 cs = (u8)(cs + buffer[pos]);
1558
1559 header = (struct ti_firmware_header *)buffer;
1560 header->wLength = cpu_to_le16(size - sizeof(*header));
1561 header->bCheckSum = cs;
1562
1563 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1564 for (pos = 0; pos < size; pos += done) {
1565 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1566 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1567 &done, 1000);
1568 if (status)
1569 break;
1570 }
1571 return status;
1572 }
1573
ti_download_firmware(struct ti_device * tdev)1574 static int ti_download_firmware(struct ti_device *tdev)
1575 {
1576 int status;
1577 int buffer_size;
1578 u8 *buffer;
1579 struct usb_device *dev = tdev->td_serial->dev;
1580 unsigned int pipe = usb_sndbulkpipe(dev,
1581 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1582 const struct firmware *fw_p;
1583 char buf[32];
1584
1585 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1586 snprintf(buf,
1587 sizeof(buf),
1588 "moxa/moxa-%04x.fw",
1589 le16_to_cpu(dev->descriptor.idProduct));
1590
1591 status = request_firmware(&fw_p, buf, &dev->dev);
1592 goto check_firmware;
1593 }
1594
1595 /* try ID specific firmware first, then try generic firmware */
1596 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1597 le16_to_cpu(dev->descriptor.idVendor),
1598 le16_to_cpu(dev->descriptor.idProduct));
1599 status = request_firmware(&fw_p, buf, &dev->dev);
1600
1601 if (status != 0) {
1602 buf[0] = '\0';
1603 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1604 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1605 case MTS_CDMA_PRODUCT_ID:
1606 strcpy(buf, "mts_cdma.fw");
1607 break;
1608 case MTS_GSM_PRODUCT_ID:
1609 strcpy(buf, "mts_gsm.fw");
1610 break;
1611 case MTS_EDGE_PRODUCT_ID:
1612 strcpy(buf, "mts_edge.fw");
1613 break;
1614 case MTS_MT9234MU_PRODUCT_ID:
1615 strcpy(buf, "mts_mt9234mu.fw");
1616 break;
1617 case MTS_MT9234ZBA_PRODUCT_ID:
1618 strcpy(buf, "mts_mt9234zba.fw");
1619 break;
1620 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1621 strcpy(buf, "mts_mt9234zba.fw");
1622 break; }
1623 }
1624 if (buf[0] == '\0') {
1625 if (tdev->td_is_3410)
1626 strcpy(buf, "ti_3410.fw");
1627 else
1628 strcpy(buf, "ti_5052.fw");
1629 }
1630 status = request_firmware(&fw_p, buf, &dev->dev);
1631 }
1632
1633 check_firmware:
1634 if (status) {
1635 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1636 return -ENOENT;
1637 }
1638 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1639 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1640 release_firmware(fw_p);
1641 return -ENOENT;
1642 }
1643
1644 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1645 buffer = kmalloc(buffer_size, GFP_KERNEL);
1646 if (buffer) {
1647 memcpy(buffer, fw_p->data, fw_p->size);
1648 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1649 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1650 kfree(buffer);
1651 } else {
1652 status = -ENOMEM;
1653 }
1654 release_firmware(fw_p);
1655 if (status) {
1656 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1657 __func__, status);
1658 return status;
1659 }
1660
1661 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1662
1663 return 0;
1664 }
1665