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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * USB Cypress M8 driver | |
3 | * | |
4 | * Copyright (C) 2004 | |
5 | * Lonnie Mendez (dignome@gmail.com) | |
6 | * Copyright (C) 2003,2004 | |
7 | * Neil Whelchel (koyama@firstlight.net) | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
15 | * | |
16 | * See http://geocities.com/i0xox0i for information on this driver and the | |
17 | * earthmate usb device. | |
18 | * | |
3cb4a4f7 LM |
19 | * Lonnie Mendez <dignome@gmail.com> |
20 | * 4-29-2005 | |
21 | * Fixed problem where setting or retreiving the serial config would fail with | |
22 | * EPIPE. Removed CRTS toggling so the driver behaves more like other usbserial | |
23 | * adapters. Issued new interval of 1ms instead of the default 10ms. As a | |
24 | * result, transfer speed has been substantially increased. From avg. 850bps to | |
25 | * avg. 3300bps. initial termios has also been modified. Cleaned up code and | |
26 | * formatting issues so it is more readable. Replaced the C++ style comments. | |
1da177e4 LT |
27 | * |
28 | * Lonnie Mendez <dignome@gmail.com> | |
29 | * 12-15-2004 | |
30 | * Incorporated write buffering from pl2303 driver. Fixed bug with line | |
31 | * handling so both lines are raised in cypress_open. (was dropping rts) | |
32 | * Various code cleanups made as well along with other misc bug fixes. | |
33 | * | |
34 | * Lonnie Mendez <dignome@gmail.com> | |
35 | * 04-10-2004 | |
36 | * Driver modified to support dynamic line settings. Various improvments | |
37 | * and features. | |
38 | * | |
39 | * Neil Whelchel | |
40 | * 10-2003 | |
41 | * Driver first released. | |
42 | * | |
1da177e4 LT |
43 | */ |
44 | ||
45 | /* Thanks to Neil Whelchel for writing the first cypress m8 implementation for linux. */ | |
46 | /* Thanks to cypress for providing references for the hid reports. */ | |
47 | /* Thanks to Jiang Zhang for providing links and for general help. */ | |
48 | /* Code originates and was built up from ftdi_sio, belkin, pl2303 and others. */ | |
49 | ||
50 | ||
51 | #include <linux/config.h> | |
52 | #include <linux/kernel.h> | |
53 | #include <linux/errno.h> | |
54 | #include <linux/init.h> | |
55 | #include <linux/slab.h> | |
56 | #include <linux/tty.h> | |
57 | #include <linux/tty_driver.h> | |
58 | #include <linux/tty_flip.h> | |
59 | #include <linux/module.h> | |
60 | #include <linux/moduleparam.h> | |
61 | #include <linux/spinlock.h> | |
62 | #include <linux/usb.h> | |
63 | #include <linux/serial.h> | |
64 | #include <linux/delay.h> | |
65 | #include <asm/uaccess.h> | |
66 | ||
67 | #include "usb-serial.h" | |
68 | #include "cypress_m8.h" | |
69 | ||
70 | ||
71 | #ifdef CONFIG_USB_SERIAL_DEBUG | |
72 | static int debug = 1; | |
73 | #else | |
74 | static int debug; | |
75 | #endif | |
76 | static int stats; | |
3cb4a4f7 | 77 | static int interval; |
1da177e4 LT |
78 | |
79 | /* | |
80 | * Version Information | |
81 | */ | |
3cb4a4f7 | 82 | #define DRIVER_VERSION "v1.09" |
1da177e4 LT |
83 | #define DRIVER_AUTHOR "Lonnie Mendez <dignome@gmail.com>, Neil Whelchel <koyama@firstlight.net>" |
84 | #define DRIVER_DESC "Cypress USB to Serial Driver" | |
85 | ||
86 | /* write buffer size defines */ | |
87 | #define CYPRESS_BUF_SIZE 1024 | |
88 | #define CYPRESS_CLOSING_WAIT (30*HZ) | |
89 | ||
90 | static struct usb_device_id id_table_earthmate [] = { | |
91 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) }, | |
25b6f08e | 92 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, |
1da177e4 LT |
93 | { } /* Terminating entry */ |
94 | }; | |
95 | ||
96 | static struct usb_device_id id_table_cyphidcomrs232 [] = { | |
97 | { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, | |
98 | { } /* Terminating entry */ | |
99 | }; | |
100 | ||
101 | static struct usb_device_id id_table_combined [] = { | |
102 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) }, | |
25b6f08e | 103 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, |
1da177e4 LT |
104 | { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, |
105 | { } /* Terminating entry */ | |
106 | }; | |
107 | ||
108 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
109 | ||
110 | static struct usb_driver cypress_driver = { | |
111 | .name = "cypress", | |
112 | .probe = usb_serial_probe, | |
113 | .disconnect = usb_serial_disconnect, | |
114 | .id_table = id_table_combined, | |
ba9dc657 | 115 | .no_dynamic_id = 1, |
1da177e4 LT |
116 | }; |
117 | ||
118 | struct cypress_private { | |
119 | spinlock_t lock; /* private lock */ | |
120 | int chiptype; /* identifier of device, for quirks/etc */ | |
121 | int bytes_in; /* used for statistics */ | |
122 | int bytes_out; /* used for statistics */ | |
123 | int cmd_count; /* used for statistics */ | |
124 | int cmd_ctrl; /* always set this to 1 before issuing a command */ | |
125 | struct cypress_buf *buf; /* write buffer */ | |
126 | int write_urb_in_use; /* write urb in use indicator */ | |
127 | int termios_initialized; | |
128 | __u8 line_control; /* holds dtr / rts value */ | |
129 | __u8 current_status; /* received from last read - info on dsr,cts,cd,ri,etc */ | |
130 | __u8 current_config; /* stores the current configuration byte */ | |
131 | __u8 rx_flags; /* throttling - used from whiteheat/ftdi_sio */ | |
132 | int baud_rate; /* stores current baud rate in integer form */ | |
133 | int cbr_mask; /* stores current baud rate in masked form */ | |
134 | int isthrottled; /* if throttled, discard reads */ | |
135 | wait_queue_head_t delta_msr_wait; /* used for TIOCMIWAIT */ | |
136 | char prev_status, diff_status; /* used for TIOCMIWAIT */ | |
137 | /* we pass a pointer to this as the arguement sent to cypress_set_termios old_termios */ | |
138 | struct termios tmp_termios; /* stores the old termios settings */ | |
1da177e4 LT |
139 | }; |
140 | ||
141 | /* write buffer structure */ | |
142 | struct cypress_buf { | |
143 | unsigned int buf_size; | |
144 | char *buf_buf; | |
145 | char *buf_get; | |
146 | char *buf_put; | |
147 | }; | |
148 | ||
149 | /* function prototypes for the Cypress USB to serial device */ | |
150 | static int cypress_earthmate_startup (struct usb_serial *serial); | |
151 | static int cypress_hidcom_startup (struct usb_serial *serial); | |
152 | static void cypress_shutdown (struct usb_serial *serial); | |
153 | static int cypress_open (struct usb_serial_port *port, struct file *filp); | |
154 | static void cypress_close (struct usb_serial_port *port, struct file *filp); | |
155 | static int cypress_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
156 | static void cypress_send (struct usb_serial_port *port); | |
157 | static int cypress_write_room (struct usb_serial_port *port); | |
158 | static int cypress_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); | |
159 | static void cypress_set_termios (struct usb_serial_port *port, struct termios * old); | |
160 | static int cypress_tiocmget (struct usb_serial_port *port, struct file *file); | |
161 | static int cypress_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); | |
162 | static int cypress_chars_in_buffer (struct usb_serial_port *port); | |
163 | static void cypress_throttle (struct usb_serial_port *port); | |
164 | static void cypress_unthrottle (struct usb_serial_port *port); | |
165 | static void cypress_read_int_callback (struct urb *urb, struct pt_regs *regs); | |
166 | static void cypress_write_int_callback (struct urb *urb, struct pt_regs *regs); | |
167 | /* baud helper functions */ | |
168 | static int mask_to_rate (unsigned mask); | |
169 | static unsigned rate_to_mask (int rate); | |
170 | /* write buffer functions */ | |
171 | static struct cypress_buf *cypress_buf_alloc(unsigned int size); | |
172 | static void cypress_buf_free(struct cypress_buf *cb); | |
173 | static void cypress_buf_clear(struct cypress_buf *cb); | |
174 | static unsigned int cypress_buf_data_avail(struct cypress_buf *cb); | |
175 | static unsigned int cypress_buf_space_avail(struct cypress_buf *cb); | |
3cb4a4f7 LM |
176 | static unsigned int cypress_buf_put(struct cypress_buf *cb, const char *buf, unsigned int count); |
177 | static unsigned int cypress_buf_get(struct cypress_buf *cb, char *buf, unsigned int count); | |
1da177e4 LT |
178 | |
179 | ||
ea65370d | 180 | static struct usb_serial_driver cypress_earthmate_device = { |
18fcac35 GKH |
181 | .driver = { |
182 | .owner = THIS_MODULE, | |
269bda1c | 183 | .name = "earthmate", |
18fcac35 | 184 | }, |
269bda1c | 185 | .description = "DeLorme Earthmate USB", |
1da177e4 LT |
186 | .id_table = id_table_earthmate, |
187 | .num_interrupt_in = 1, | |
188 | .num_interrupt_out = 1, | |
189 | .num_bulk_in = NUM_DONT_CARE, | |
190 | .num_bulk_out = NUM_DONT_CARE, | |
191 | .num_ports = 1, | |
192 | .attach = cypress_earthmate_startup, | |
193 | .shutdown = cypress_shutdown, | |
194 | .open = cypress_open, | |
195 | .close = cypress_close, | |
196 | .write = cypress_write, | |
197 | .write_room = cypress_write_room, | |
198 | .ioctl = cypress_ioctl, | |
199 | .set_termios = cypress_set_termios, | |
200 | .tiocmget = cypress_tiocmget, | |
201 | .tiocmset = cypress_tiocmset, | |
202 | .chars_in_buffer = cypress_chars_in_buffer, | |
203 | .throttle = cypress_throttle, | |
204 | .unthrottle = cypress_unthrottle, | |
205 | .read_int_callback = cypress_read_int_callback, | |
206 | .write_int_callback = cypress_write_int_callback, | |
207 | }; | |
208 | ||
ea65370d | 209 | static struct usb_serial_driver cypress_hidcom_device = { |
18fcac35 GKH |
210 | .driver = { |
211 | .owner = THIS_MODULE, | |
269bda1c | 212 | .name = "cyphidcom", |
18fcac35 | 213 | }, |
269bda1c | 214 | .description = "HID->COM RS232 Adapter", |
1da177e4 LT |
215 | .id_table = id_table_cyphidcomrs232, |
216 | .num_interrupt_in = 1, | |
217 | .num_interrupt_out = 1, | |
218 | .num_bulk_in = NUM_DONT_CARE, | |
219 | .num_bulk_out = NUM_DONT_CARE, | |
220 | .num_ports = 1, | |
221 | .attach = cypress_hidcom_startup, | |
222 | .shutdown = cypress_shutdown, | |
223 | .open = cypress_open, | |
224 | .close = cypress_close, | |
225 | .write = cypress_write, | |
226 | .write_room = cypress_write_room, | |
227 | .ioctl = cypress_ioctl, | |
228 | .set_termios = cypress_set_termios, | |
229 | .tiocmget = cypress_tiocmget, | |
230 | .tiocmset = cypress_tiocmset, | |
231 | .chars_in_buffer = cypress_chars_in_buffer, | |
232 | .throttle = cypress_throttle, | |
233 | .unthrottle = cypress_unthrottle, | |
234 | .read_int_callback = cypress_read_int_callback, | |
235 | .write_int_callback = cypress_write_int_callback, | |
236 | }; | |
237 | ||
238 | ||
239 | /***************************************************************************** | |
240 | * Cypress serial helper functions | |
241 | *****************************************************************************/ | |
242 | ||
243 | ||
093cf723 | 244 | /* This function can either set or retrieve the current serial line settings */ |
1da177e4 LT |
245 | static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_mask, int data_bits, int stop_bits, |
246 | int parity_enable, int parity_type, int reset, int cypress_request_type) | |
247 | { | |
3cb4a4f7 | 248 | int new_baudrate = 0, retval = 0, tries = 0; |
1da177e4 | 249 | struct cypress_private *priv; |
3cb4a4f7 | 250 | __u8 feature_buffer[8]; |
1da177e4 LT |
251 | unsigned long flags; |
252 | ||
253 | dbg("%s", __FUNCTION__); | |
254 | ||
255 | priv = usb_get_serial_port_data(port); | |
256 | ||
257 | switch(cypress_request_type) { | |
258 | case CYPRESS_SET_CONFIG: | |
259 | ||
260 | /* | |
261 | * The general purpose firmware for the Cypress M8 allows for a maximum speed | |
262 | * of 57600bps (I have no idea whether DeLorme chose to use the general purpose | |
263 | * firmware or not), if you need to modify this speed setting for your own | |
264 | * project please add your own chiptype and modify the code likewise. The | |
3cb4a4f7 LM |
265 | * Cypress HID->COM device will work successfully up to 115200bps (but the |
266 | * actual throughput is around 3kBps). | |
1da177e4 LT |
267 | */ |
268 | if (baud_mask != priv->cbr_mask) { | |
269 | dbg("%s - baud rate is changing", __FUNCTION__); | |
270 | if ( priv->chiptype == CT_EARTHMATE ) { | |
271 | /* 300 and 600 baud rates are supported under the generic firmware, | |
272 | * but are not used with NMEA and SiRF protocols */ | |
273 | ||
274 | if ( (baud_mask == B300) || (baud_mask == B600) ) { | |
3cb4a4f7 | 275 | err("%s - failed setting baud rate, unsupported speed", |
1da177e4 | 276 | __FUNCTION__); |
3cb4a4f7 LM |
277 | new_baudrate = priv->baud_rate; |
278 | } else if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { | |
279 | err("%s - failed setting baud rate, unsupported speed", | |
1da177e4 | 280 | __FUNCTION__); |
3cb4a4f7 | 281 | new_baudrate = priv->baud_rate; |
1da177e4 LT |
282 | } |
283 | } else if (priv->chiptype == CT_CYPHIDCOM) { | |
3cb4a4f7 LM |
284 | if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { |
285 | err("%s - failed setting baud rate, unsupported speed", | |
1da177e4 | 286 | __FUNCTION__); |
3cb4a4f7 | 287 | new_baudrate = priv->baud_rate; |
1da177e4 LT |
288 | } |
289 | } else if (priv->chiptype == CT_GENERIC) { | |
3cb4a4f7 LM |
290 | if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { |
291 | err("%s - failed setting baud rate, unsupported speed", | |
1da177e4 | 292 | __FUNCTION__); |
3cb4a4f7 | 293 | new_baudrate = priv->baud_rate; |
1da177e4 LT |
294 | } |
295 | } else { | |
3cb4a4f7 LM |
296 | info("%s - please define your chiptype", __FUNCTION__); |
297 | new_baudrate = priv->baud_rate; | |
1da177e4 LT |
298 | } |
299 | } else { /* baud rate not changing, keep the old */ | |
3cb4a4f7 | 300 | new_baudrate = priv->baud_rate; |
1da177e4 | 301 | } |
3cb4a4f7 | 302 | dbg("%s - baud rate is being sent as %d", __FUNCTION__, new_baudrate); |
1da177e4 | 303 | |
3cb4a4f7 LM |
304 | memset(feature_buffer, 0, 8); |
305 | /* fill the feature_buffer with new configuration */ | |
306 | *((u_int32_t *)feature_buffer) = new_baudrate; | |
1da177e4 | 307 | |
3cb4a4f7 | 308 | feature_buffer[4] |= data_bits; /* assign data bits in 2 bit space ( max 3 ) */ |
1da177e4 | 309 | /* 1 bit gap */ |
3cb4a4f7 LM |
310 | feature_buffer[4] |= (stop_bits << 3); /* assign stop bits in 1 bit space */ |
311 | feature_buffer[4] |= (parity_enable << 4); /* assign parity flag in 1 bit space */ | |
312 | feature_buffer[4] |= (parity_type << 5); /* assign parity type in 1 bit space */ | |
1da177e4 | 313 | /* 1 bit gap */ |
3cb4a4f7 | 314 | feature_buffer[4] |= (reset << 7); /* assign reset at end of byte, 1 bit space */ |
1da177e4 LT |
315 | |
316 | dbg("%s - device is being sent this feature report:", __FUNCTION__); | |
317 | dbg("%s - %02X - %02X - %02X - %02X - %02X", __FUNCTION__, feature_buffer[0], feature_buffer[1], | |
318 | feature_buffer[2], feature_buffer[3], feature_buffer[4]); | |
319 | ||
3cb4a4f7 | 320 | do { |
1da177e4 LT |
321 | retval = usb_control_msg (port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), |
322 | HID_REQ_SET_REPORT, USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS, | |
3cb4a4f7 LM |
323 | 0x0300, 0, feature_buffer, 8, 500); |
324 | ||
325 | if (tries++ >= 3) | |
326 | break; | |
1da177e4 | 327 | |
3cb4a4f7 LM |
328 | if (retval == EPIPE) |
329 | usb_clear_halt(port->serial->dev, 0x00); | |
330 | } while (retval != 8 && retval != ENODEV); | |
331 | ||
332 | if (retval != 8) | |
1da177e4 LT |
333 | err("%s - failed sending serial line settings - %d", __FUNCTION__, retval); |
334 | else { | |
335 | spin_lock_irqsave(&priv->lock, flags); | |
3cb4a4f7 | 336 | priv->baud_rate = new_baudrate; |
1da177e4 | 337 | priv->cbr_mask = baud_mask; |
3cb4a4f7 | 338 | priv->current_config = feature_buffer[4]; |
1da177e4 LT |
339 | spin_unlock_irqrestore(&priv->lock, flags); |
340 | } | |
341 | break; | |
342 | case CYPRESS_GET_CONFIG: | |
343 | dbg("%s - retreiving serial line settings", __FUNCTION__); | |
3cb4a4f7 LM |
344 | /* set initial values in feature buffer */ |
345 | memset(feature_buffer, 0, 8); | |
1da177e4 | 346 | |
3cb4a4f7 | 347 | do { |
1da177e4 LT |
348 | retval = usb_control_msg (port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), |
349 | HID_REQ_GET_REPORT, USB_DIR_IN | USB_RECIP_INTERFACE | USB_TYPE_CLASS, | |
3cb4a4f7 LM |
350 | 0x0300, 0, feature_buffer, 8, 500); |
351 | ||
352 | if (tries++ >= 3) | |
353 | break; | |
354 | ||
355 | if (retval == EPIPE) | |
356 | usb_clear_halt(port->serial->dev, 0x00); | |
357 | } while (retval != 5 && retval != ENODEV); | |
358 | ||
1da177e4 | 359 | if (retval != 5) { |
943ffb58 | 360 | err("%s - failed to retrieve serial line settings - %d", __FUNCTION__, retval); |
1da177e4 LT |
361 | return retval; |
362 | } else { | |
363 | spin_lock_irqsave(&priv->lock, flags); | |
3cb4a4f7 | 364 | |
1da177e4 LT |
365 | /* store the config in one byte, and later use bit masks to check values */ |
366 | priv->current_config = feature_buffer[4]; | |
3cb4a4f7 | 367 | priv->baud_rate = *((u_int32_t *)feature_buffer); |
1da177e4 | 368 | |
3cb4a4f7 | 369 | if ( (priv->cbr_mask = rate_to_mask(priv->baud_rate)) == 0x40) |
1da177e4 | 370 | dbg("%s - failed setting the baud mask (not defined)", __FUNCTION__); |
1da177e4 LT |
371 | spin_unlock_irqrestore(&priv->lock, flags); |
372 | } | |
1da177e4 | 373 | } |
3cb4a4f7 LM |
374 | spin_lock_irqsave(&priv->lock, flags); |
375 | ++priv->cmd_count; | |
376 | spin_unlock_irqrestore(&priv->lock, flags); | |
377 | ||
1da177e4 LT |
378 | return retval; |
379 | } /* cypress_serial_control */ | |
380 | ||
381 | ||
3cb4a4f7 | 382 | /* given a baud mask, it will return integer baud on success */ |
1da177e4 LT |
383 | static int mask_to_rate (unsigned mask) |
384 | { | |
385 | int rate; | |
386 | ||
387 | switch (mask) { | |
388 | case B0: rate = 0; break; | |
389 | case B300: rate = 300; break; | |
390 | case B600: rate = 600; break; | |
391 | case B1200: rate = 1200; break; | |
392 | case B2400: rate = 2400; break; | |
393 | case B4800: rate = 4800; break; | |
394 | case B9600: rate = 9600; break; | |
395 | case B19200: rate = 19200; break; | |
396 | case B38400: rate = 38400; break; | |
397 | case B57600: rate = 57600; break; | |
398 | case B115200: rate = 115200; break; | |
399 | default: rate = -1; | |
400 | } | |
401 | ||
402 | return rate; | |
403 | } | |
404 | ||
405 | ||
406 | static unsigned rate_to_mask (int rate) | |
407 | { | |
408 | unsigned mask; | |
409 | ||
410 | switch (rate) { | |
411 | case 0: mask = B0; break; | |
412 | case 300: mask = B300; break; | |
413 | case 600: mask = B600; break; | |
414 | case 1200: mask = B1200; break; | |
415 | case 2400: mask = B2400; break; | |
416 | case 4800: mask = B4800; break; | |
417 | case 9600: mask = B9600; break; | |
418 | case 19200: mask = B19200; break; | |
419 | case 38400: mask = B38400; break; | |
420 | case 57600: mask = B57600; break; | |
421 | case 115200: mask = B115200; break; | |
422 | default: mask = 0x40; | |
423 | } | |
424 | ||
425 | return mask; | |
426 | } | |
427 | /***************************************************************************** | |
428 | * Cypress serial driver functions | |
429 | *****************************************************************************/ | |
430 | ||
431 | ||
432 | static int generic_startup (struct usb_serial *serial) | |
433 | { | |
434 | struct cypress_private *priv; | |
435 | ||
436 | dbg("%s - port %d", __FUNCTION__, serial->port[0]->number); | |
437 | ||
438 | priv = kmalloc(sizeof (struct cypress_private), GFP_KERNEL); | |
439 | if (!priv) | |
440 | return -ENOMEM; | |
441 | ||
442 | memset(priv, 0x00, sizeof (struct cypress_private)); | |
443 | spin_lock_init(&priv->lock); | |
444 | priv->buf = cypress_buf_alloc(CYPRESS_BUF_SIZE); | |
445 | if (priv->buf == NULL) { | |
446 | kfree(priv); | |
447 | return -ENOMEM; | |
448 | } | |
449 | init_waitqueue_head(&priv->delta_msr_wait); | |
450 | ||
451 | usb_reset_configuration (serial->dev); | |
452 | ||
3cb4a4f7 | 453 | interval = 1; |
1da177e4 LT |
454 | priv->cmd_ctrl = 0; |
455 | priv->line_control = 0; | |
456 | priv->termios_initialized = 0; | |
1da177e4 | 457 | priv->rx_flags = 0; |
3cb4a4f7 | 458 | priv->cbr_mask = B300; |
1da177e4 LT |
459 | usb_set_serial_port_data(serial->port[0], priv); |
460 | ||
b9db07fb LM |
461 | return 0; |
462 | } | |
1da177e4 LT |
463 | |
464 | ||
465 | static int cypress_earthmate_startup (struct usb_serial *serial) | |
466 | { | |
467 | struct cypress_private *priv; | |
468 | ||
469 | dbg("%s", __FUNCTION__); | |
470 | ||
471 | if (generic_startup(serial)) { | |
b9db07fb LM |
472 | dbg("%s - Failed setting up port %d", __FUNCTION__, |
473 | serial->port[0]->number); | |
1da177e4 LT |
474 | return 1; |
475 | } | |
476 | ||
477 | priv = usb_get_serial_port_data(serial->port[0]); | |
478 | priv->chiptype = CT_EARTHMATE; | |
b9db07fb LM |
479 | |
480 | return 0; | |
1da177e4 LT |
481 | } /* cypress_earthmate_startup */ |
482 | ||
483 | ||
484 | static int cypress_hidcom_startup (struct usb_serial *serial) | |
485 | { | |
486 | struct cypress_private *priv; | |
487 | ||
488 | dbg("%s", __FUNCTION__); | |
489 | ||
490 | if (generic_startup(serial)) { | |
b9db07fb LM |
491 | dbg("%s - Failed setting up port %d", __FUNCTION__, |
492 | serial->port[0]->number); | |
1da177e4 LT |
493 | return 1; |
494 | } | |
495 | ||
496 | priv = usb_get_serial_port_data(serial->port[0]); | |
497 | priv->chiptype = CT_CYPHIDCOM; | |
498 | ||
b9db07fb | 499 | return 0; |
1da177e4 LT |
500 | } /* cypress_hidcom_startup */ |
501 | ||
502 | ||
503 | static void cypress_shutdown (struct usb_serial *serial) | |
504 | { | |
505 | struct cypress_private *priv; | |
506 | ||
507 | dbg ("%s - port %d", __FUNCTION__, serial->port[0]->number); | |
508 | ||
509 | /* all open ports are closed at this point */ | |
510 | ||
511 | priv = usb_get_serial_port_data(serial->port[0]); | |
512 | ||
513 | if (priv) { | |
514 | cypress_buf_free(priv->buf); | |
515 | kfree(priv); | |
516 | usb_set_serial_port_data(serial->port[0], NULL); | |
517 | } | |
518 | } | |
519 | ||
520 | ||
521 | static int cypress_open (struct usb_serial_port *port, struct file *filp) | |
522 | { | |
523 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
524 | struct usb_serial *serial = port->serial; | |
525 | unsigned long flags; | |
526 | int result = 0; | |
527 | ||
528 | dbg("%s - port %d", __FUNCTION__, port->number); | |
529 | ||
530 | /* clear halts before open */ | |
1da177e4 LT |
531 | usb_clear_halt(serial->dev, 0x81); |
532 | usb_clear_halt(serial->dev, 0x02); | |
533 | ||
534 | spin_lock_irqsave(&priv->lock, flags); | |
535 | /* reset read/write statistics */ | |
536 | priv->bytes_in = 0; | |
537 | priv->bytes_out = 0; | |
538 | priv->cmd_count = 0; | |
539 | priv->rx_flags = 0; | |
540 | spin_unlock_irqrestore(&priv->lock, flags); | |
541 | ||
542 | /* setting to zero could cause data loss */ | |
543 | port->tty->low_latency = 1; | |
544 | ||
545 | /* raise both lines and set termios */ | |
546 | spin_lock_irqsave(&priv->lock, flags); | |
547 | priv->line_control = CONTROL_DTR | CONTROL_RTS; | |
1da177e4 LT |
548 | priv->cmd_ctrl = 1; |
549 | spin_unlock_irqrestore(&priv->lock, flags); | |
550 | result = cypress_write(port, NULL, 0); | |
551 | ||
552 | if (result) { | |
553 | dev_err(&port->dev, "%s - failed setting the control lines - error %d\n", __FUNCTION__, result); | |
554 | return result; | |
555 | } else | |
556 | dbg("%s - success setting the control lines", __FUNCTION__); | |
557 | ||
558 | cypress_set_termios(port, &priv->tmp_termios); | |
559 | ||
560 | /* setup the port and start reading from the device */ | |
561 | if(!port->interrupt_in_urb){ | |
562 | err("%s - interrupt_in_urb is empty!", __FUNCTION__); | |
563 | return(-1); | |
564 | } | |
565 | ||
566 | usb_fill_int_urb(port->interrupt_in_urb, serial->dev, | |
567 | usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress), | |
568 | port->interrupt_in_urb->transfer_buffer, port->interrupt_in_urb->transfer_buffer_length, | |
3cb4a4f7 | 569 | cypress_read_int_callback, port, interval); |
1da177e4 LT |
570 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
571 | ||
572 | if (result){ | |
573 | dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); | |
574 | } | |
575 | ||
576 | return result; | |
577 | } /* cypress_open */ | |
578 | ||
579 | ||
580 | static void cypress_close(struct usb_serial_port *port, struct file * filp) | |
581 | { | |
582 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
583 | unsigned int c_cflag; | |
584 | unsigned long flags; | |
585 | int bps; | |
586 | long timeout; | |
587 | wait_queue_t wait; | |
588 | ||
589 | dbg("%s - port %d", __FUNCTION__, port->number); | |
590 | ||
591 | /* wait for data to drain from buffer */ | |
592 | spin_lock_irqsave(&priv->lock, flags); | |
593 | timeout = CYPRESS_CLOSING_WAIT; | |
594 | init_waitqueue_entry(&wait, current); | |
595 | add_wait_queue(&port->tty->write_wait, &wait); | |
596 | for (;;) { | |
597 | set_current_state(TASK_INTERRUPTIBLE); | |
598 | if (cypress_buf_data_avail(priv->buf) == 0 | |
599 | || timeout == 0 || signal_pending(current) | |
600 | || !usb_get_intfdata(port->serial->interface)) | |
601 | break; | |
602 | spin_unlock_irqrestore(&priv->lock, flags); | |
603 | timeout = schedule_timeout(timeout); | |
604 | spin_lock_irqsave(&priv->lock, flags); | |
605 | } | |
606 | set_current_state(TASK_RUNNING); | |
607 | remove_wait_queue(&port->tty->write_wait, &wait); | |
608 | /* clear out any remaining data in the buffer */ | |
609 | cypress_buf_clear(priv->buf); | |
610 | spin_unlock_irqrestore(&priv->lock, flags); | |
611 | ||
612 | /* wait for characters to drain from device */ | |
613 | bps = tty_get_baud_rate(port->tty); | |
614 | if (bps > 1200) | |
615 | timeout = max((HZ*2560)/bps,HZ/10); | |
616 | else | |
617 | timeout = 2*HZ; | |
22c43863 | 618 | schedule_timeout_interruptible(timeout); |
1da177e4 LT |
619 | |
620 | dbg("%s - stopping urbs", __FUNCTION__); | |
621 | usb_kill_urb (port->interrupt_in_urb); | |
622 | usb_kill_urb (port->interrupt_out_urb); | |
623 | ||
624 | if (port->tty) { | |
625 | c_cflag = port->tty->termios->c_cflag; | |
626 | if (c_cflag & HUPCL) { | |
627 | /* drop dtr and rts */ | |
628 | priv = usb_get_serial_port_data(port); | |
629 | spin_lock_irqsave(&priv->lock, flags); | |
630 | priv->line_control = 0; | |
631 | priv->cmd_ctrl = 1; | |
632 | spin_unlock_irqrestore(&priv->lock, flags); | |
633 | cypress_write(port, NULL, 0); | |
634 | } | |
635 | } | |
636 | ||
637 | if (stats) | |
638 | dev_info (&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n", | |
639 | priv->bytes_in, priv->bytes_out, priv->cmd_count); | |
640 | } /* cypress_close */ | |
641 | ||
642 | ||
643 | static int cypress_write(struct usb_serial_port *port, const unsigned char *buf, int count) | |
644 | { | |
645 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
646 | unsigned long flags; | |
647 | ||
648 | dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count); | |
649 | ||
650 | /* line control commands, which need to be executed immediately, | |
651 | are not put into the buffer for obvious reasons. | |
652 | */ | |
653 | if (priv->cmd_ctrl) { | |
654 | count = 0; | |
655 | goto finish; | |
656 | } | |
657 | ||
658 | if (!count) | |
659 | return count; | |
660 | ||
661 | spin_lock_irqsave(&priv->lock, flags); | |
662 | count = cypress_buf_put(priv->buf, buf, count); | |
663 | spin_unlock_irqrestore(&priv->lock, flags); | |
664 | ||
665 | finish: | |
666 | cypress_send(port); | |
667 | ||
668 | return count; | |
669 | } /* cypress_write */ | |
670 | ||
671 | ||
672 | static void cypress_send(struct usb_serial_port *port) | |
673 | { | |
674 | int count = 0, result, offset, actual_size; | |
675 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
676 | unsigned long flags; | |
677 | ||
678 | dbg("%s - port %d", __FUNCTION__, port->number); | |
679 | dbg("%s - interrupt out size is %d", __FUNCTION__, port->interrupt_out_size); | |
680 | ||
681 | spin_lock_irqsave(&priv->lock, flags); | |
682 | if (priv->write_urb_in_use) { | |
683 | dbg("%s - can't write, urb in use", __FUNCTION__); | |
684 | spin_unlock_irqrestore(&priv->lock, flags); | |
685 | return; | |
686 | } | |
687 | spin_unlock_irqrestore(&priv->lock, flags); | |
688 | ||
689 | /* clear buffer */ | |
690 | memset(port->interrupt_out_urb->transfer_buffer, 0, port->interrupt_out_size); | |
691 | ||
692 | spin_lock_irqsave(&priv->lock, flags); | |
693 | switch (port->interrupt_out_size) { | |
694 | case 32: | |
3cb4a4f7 | 695 | /* this is for the CY7C64013... */ |
1da177e4 LT |
696 | offset = 2; |
697 | port->interrupt_out_buffer[0] = priv->line_control; | |
698 | break; | |
699 | case 8: | |
3cb4a4f7 | 700 | /* this is for the CY7C63743... */ |
1da177e4 LT |
701 | offset = 1; |
702 | port->interrupt_out_buffer[0] = priv->line_control; | |
703 | break; | |
704 | default: | |
705 | dbg("%s - wrong packet size", __FUNCTION__); | |
706 | spin_unlock_irqrestore(&priv->lock, flags); | |
707 | return; | |
708 | } | |
709 | ||
710 | if (priv->line_control & CONTROL_RESET) | |
711 | priv->line_control &= ~CONTROL_RESET; | |
712 | ||
713 | if (priv->cmd_ctrl) { | |
714 | priv->cmd_count++; | |
715 | dbg("%s - line control command being issued", __FUNCTION__); | |
716 | spin_unlock_irqrestore(&priv->lock, flags); | |
717 | goto send; | |
718 | } else | |
719 | spin_unlock_irqrestore(&priv->lock, flags); | |
720 | ||
721 | count = cypress_buf_get(priv->buf, &port->interrupt_out_buffer[offset], | |
722 | port->interrupt_out_size-offset); | |
723 | ||
724 | if (count == 0) { | |
725 | return; | |
726 | } | |
727 | ||
728 | switch (port->interrupt_out_size) { | |
729 | case 32: | |
730 | port->interrupt_out_buffer[1] = count; | |
731 | break; | |
732 | case 8: | |
733 | port->interrupt_out_buffer[0] |= count; | |
734 | } | |
735 | ||
736 | dbg("%s - count is %d", __FUNCTION__, count); | |
737 | ||
738 | send: | |
739 | spin_lock_irqsave(&priv->lock, flags); | |
740 | priv->write_urb_in_use = 1; | |
741 | spin_unlock_irqrestore(&priv->lock, flags); | |
742 | ||
743 | if (priv->cmd_ctrl) | |
744 | actual_size = 1; | |
745 | else | |
746 | actual_size = count + (port->interrupt_out_size == 32 ? 2 : 1); | |
747 | ||
748 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, port->interrupt_out_size, | |
749 | port->interrupt_out_urb->transfer_buffer); | |
750 | ||
751 | port->interrupt_out_urb->transfer_buffer_length = actual_size; | |
752 | port->interrupt_out_urb->dev = port->serial->dev; | |
3cb4a4f7 | 753 | port->interrupt_out_urb->interval = interval; |
1da177e4 LT |
754 | result = usb_submit_urb (port->interrupt_out_urb, GFP_ATOMIC); |
755 | if (result) { | |
756 | dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, | |
757 | result); | |
758 | priv->write_urb_in_use = 0; | |
759 | } | |
760 | ||
761 | spin_lock_irqsave(&priv->lock, flags); | |
762 | if (priv->cmd_ctrl) { | |
763 | priv->cmd_ctrl = 0; | |
764 | } | |
765 | priv->bytes_out += count; /* do not count the line control and size bytes */ | |
766 | spin_unlock_irqrestore(&priv->lock, flags); | |
767 | ||
768 | schedule_work(&port->work); | |
769 | } /* cypress_send */ | |
770 | ||
771 | ||
772 | /* returns how much space is available in the soft buffer */ | |
773 | static int cypress_write_room(struct usb_serial_port *port) | |
774 | { | |
775 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
776 | int room = 0; | |
777 | unsigned long flags; | |
778 | ||
779 | dbg("%s - port %d", __FUNCTION__, port->number); | |
780 | ||
781 | spin_lock_irqsave(&priv->lock, flags); | |
782 | room = cypress_buf_space_avail(priv->buf); | |
783 | spin_unlock_irqrestore(&priv->lock, flags); | |
784 | ||
785 | dbg("%s - returns %d", __FUNCTION__, room); | |
786 | return room; | |
787 | } | |
788 | ||
789 | ||
790 | static int cypress_tiocmget (struct usb_serial_port *port, struct file *file) | |
791 | { | |
792 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
793 | __u8 status, control; | |
794 | unsigned int result = 0; | |
795 | unsigned long flags; | |
796 | ||
797 | dbg("%s - port %d", __FUNCTION__, port->number); | |
798 | ||
799 | spin_lock_irqsave(&priv->lock, flags); | |
800 | control = priv->line_control; | |
801 | status = priv->current_status; | |
802 | spin_unlock_irqrestore(&priv->lock, flags); | |
803 | ||
804 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) | |
805 | | ((control & CONTROL_RTS) ? TIOCM_RTS : 0) | |
806 | | ((status & UART_CTS) ? TIOCM_CTS : 0) | |
807 | | ((status & UART_DSR) ? TIOCM_DSR : 0) | |
808 | | ((status & UART_RI) ? TIOCM_RI : 0) | |
809 | | ((status & UART_CD) ? TIOCM_CD : 0); | |
810 | ||
811 | dbg("%s - result = %x", __FUNCTION__, result); | |
812 | ||
813 | return result; | |
814 | } | |
815 | ||
816 | ||
817 | static int cypress_tiocmset (struct usb_serial_port *port, struct file *file, | |
818 | unsigned int set, unsigned int clear) | |
819 | { | |
820 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
821 | unsigned long flags; | |
822 | ||
823 | dbg("%s - port %d", __FUNCTION__, port->number); | |
824 | ||
825 | spin_lock_irqsave(&priv->lock, flags); | |
826 | if (set & TIOCM_RTS) | |
827 | priv->line_control |= CONTROL_RTS; | |
828 | if (set & TIOCM_DTR) | |
829 | priv->line_control |= CONTROL_DTR; | |
830 | if (clear & TIOCM_RTS) | |
831 | priv->line_control &= ~CONTROL_RTS; | |
832 | if (clear & TIOCM_DTR) | |
833 | priv->line_control &= ~CONTROL_DTR; | |
834 | spin_unlock_irqrestore(&priv->lock, flags); | |
835 | ||
836 | priv->cmd_ctrl = 1; | |
837 | return cypress_write(port, NULL, 0); | |
838 | } | |
839 | ||
840 | ||
841 | static int cypress_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) | |
842 | { | |
843 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
844 | ||
845 | dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); | |
846 | ||
847 | switch (cmd) { | |
848 | case TIOCGSERIAL: | |
849 | if (copy_to_user((void __user *)arg, port->tty->termios, sizeof(struct termios))) { | |
850 | return -EFAULT; | |
851 | } | |
852 | return (0); | |
853 | break; | |
854 | case TIOCSSERIAL: | |
855 | if (copy_from_user(port->tty->termios, (void __user *)arg, sizeof(struct termios))) { | |
856 | return -EFAULT; | |
857 | } | |
858 | /* here we need to call cypress_set_termios to invoke the new settings */ | |
859 | cypress_set_termios(port, &priv->tmp_termios); | |
860 | return (0); | |
861 | break; | |
862 | /* these are called when setting baud rate from gpsd */ | |
863 | case TCGETS: | |
864 | if (copy_to_user((void __user *)arg, port->tty->termios, sizeof(struct termios))) { | |
865 | return -EFAULT; | |
866 | } | |
867 | return (0); | |
868 | break; | |
869 | case TCSETS: | |
870 | if (copy_from_user(port->tty->termios, (void __user *)arg, sizeof(struct termios))) { | |
871 | return -EFAULT; | |
872 | } | |
873 | /* here we need to call cypress_set_termios to invoke the new settings */ | |
874 | cypress_set_termios(port, &priv->tmp_termios); | |
875 | return (0); | |
876 | break; | |
877 | /* This code comes from drivers/char/serial.c and ftdi_sio.c */ | |
878 | case TIOCMIWAIT: | |
879 | while (priv != NULL) { | |
880 | interruptible_sleep_on(&priv->delta_msr_wait); | |
881 | /* see if a signal did it */ | |
882 | if (signal_pending(current)) | |
883 | return -ERESTARTSYS; | |
884 | else { | |
885 | char diff = priv->diff_status; | |
886 | ||
887 | if (diff == 0) { | |
888 | return -EIO; /* no change => error */ | |
889 | } | |
890 | ||
891 | /* consume all events */ | |
892 | priv->diff_status = 0; | |
893 | ||
894 | /* return 0 if caller wanted to know about these bits */ | |
895 | if ( ((arg & TIOCM_RNG) && (diff & UART_RI)) || | |
896 | ((arg & TIOCM_DSR) && (diff & UART_DSR)) || | |
897 | ((arg & TIOCM_CD) && (diff & UART_CD)) || | |
898 | ((arg & TIOCM_CTS) && (diff & UART_CTS)) ) { | |
899 | return 0; | |
900 | } | |
901 | /* otherwise caller can't care less about what happened, | |
902 | * and so we continue to wait for more events. | |
903 | */ | |
904 | } | |
905 | } | |
906 | return 0; | |
907 | break; | |
908 | default: | |
909 | break; | |
910 | } | |
911 | ||
912 | dbg("%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h", __FUNCTION__, cmd); | |
913 | ||
914 | return -ENOIOCTLCMD; | |
915 | } /* cypress_ioctl */ | |
916 | ||
917 | ||
b9db07fb LM |
918 | static void cypress_set_termios (struct usb_serial_port *port, |
919 | struct termios *old_termios) | |
1da177e4 LT |
920 | { |
921 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
922 | struct tty_struct *tty; | |
923 | int data_bits, stop_bits, parity_type, parity_enable; | |
924 | unsigned cflag, iflag, baud_mask; | |
925 | unsigned long flags; | |
926 | __u8 oldlines; | |
3cb4a4f7 | 927 | int linechange = 0; |
b9db07fb | 928 | |
1da177e4 LT |
929 | dbg("%s - port %d", __FUNCTION__, port->number); |
930 | ||
931 | tty = port->tty; | |
932 | if ((!tty) || (!tty->termios)) { | |
933 | dbg("%s - no tty structures", __FUNCTION__); | |
934 | return; | |
935 | } | |
936 | ||
937 | spin_lock_irqsave(&priv->lock, flags); | |
938 | if (!priv->termios_initialized) { | |
939 | if (priv->chiptype == CT_EARTHMATE) { | |
940 | *(tty->termios) = tty_std_termios; | |
b9db07fb LM |
941 | tty->termios->c_cflag = B4800 | CS8 | CREAD | HUPCL | |
942 | CLOCAL; | |
1da177e4 LT |
943 | } else if (priv->chiptype == CT_CYPHIDCOM) { |
944 | *(tty->termios) = tty_std_termios; | |
b9db07fb LM |
945 | tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | |
946 | CLOCAL; | |
1da177e4 LT |
947 | } |
948 | priv->termios_initialized = 1; | |
949 | } | |
950 | spin_unlock_irqrestore(&priv->lock, flags); | |
951 | ||
952 | cflag = tty->termios->c_cflag; | |
953 | iflag = tty->termios->c_iflag; | |
954 | ||
955 | /* check if there are new settings */ | |
956 | if (old_termios) { | |
957 | if ((cflag != old_termios->c_cflag) || | |
b9db07fb LM |
958 | (RELEVANT_IFLAG(iflag) != |
959 | RELEVANT_IFLAG(old_termios->c_iflag))) { | |
960 | dbg("%s - attempting to set new termios settings", | |
961 | __FUNCTION__); | |
962 | /* should make a copy of this in case something goes | |
963 | * wrong in the function, we can restore it */ | |
1da177e4 LT |
964 | spin_lock_irqsave(&priv->lock, flags); |
965 | priv->tmp_termios = *(tty->termios); | |
b9db07fb | 966 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
967 | } else { |
968 | dbg("%s - nothing to do, exiting", __FUNCTION__); | |
969 | return; | |
970 | } | |
971 | } else | |
972 | return; | |
973 | ||
974 | /* set number of data bits, parity, stop bits */ | |
975 | /* when parity is disabled the parity type bit is ignored */ | |
976 | ||
b9db07fb LM |
977 | /* 1 means 2 stop bits, 0 means 1 stop bit */ |
978 | stop_bits = cflag & CSTOPB ? 1 : 0; | |
979 | ||
1da177e4 LT |
980 | if (cflag & PARENB) { |
981 | parity_enable = 1; | |
b9db07fb LM |
982 | /* 1 means odd parity, 0 means even parity */ |
983 | parity_type = cflag & PARODD ? 1 : 0; | |
1da177e4 LT |
984 | } else |
985 | parity_enable = parity_type = 0; | |
986 | ||
987 | if (cflag & CSIZE) { | |
988 | switch (cflag & CSIZE) { | |
b9db07fb LM |
989 | case CS5: |
990 | data_bits = 0; | |
991 | break; | |
992 | case CS6: | |
993 | data_bits = 1; | |
994 | break; | |
995 | case CS7: | |
996 | data_bits = 2; | |
997 | break; | |
998 | case CS8: | |
999 | data_bits = 3; | |
1000 | break; | |
1001 | default: | |
1002 | err("%s - CSIZE was set, but not CS5-CS8", | |
1003 | __FUNCTION__); | |
1004 | data_bits = 3; | |
1da177e4 LT |
1005 | } |
1006 | } else | |
1007 | data_bits = 3; | |
1008 | ||
1009 | spin_lock_irqsave(&priv->lock, flags); | |
1010 | oldlines = priv->line_control; | |
1011 | if ((cflag & CBAUD) == B0) { | |
1012 | /* drop dtr and rts */ | |
1013 | dbg("%s - dropping the lines, baud rate 0bps", __FUNCTION__); | |
1014 | baud_mask = B0; | |
1015 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); | |
1016 | } else { | |
1017 | baud_mask = (cflag & CBAUD); | |
1018 | switch(baud_mask) { | |
b9db07fb LM |
1019 | case B300: |
1020 | dbg("%s - setting baud 300bps", __FUNCTION__); | |
1021 | break; | |
1022 | case B600: | |
1023 | dbg("%s - setting baud 600bps", __FUNCTION__); | |
1024 | break; | |
1025 | case B1200: | |
1026 | dbg("%s - setting baud 1200bps", __FUNCTION__); | |
1027 | break; | |
1028 | case B2400: | |
1029 | dbg("%s - setting baud 2400bps", __FUNCTION__); | |
1030 | break; | |
1031 | case B4800: | |
1032 | dbg("%s - setting baud 4800bps", __FUNCTION__); | |
1033 | break; | |
1034 | case B9600: | |
1035 | dbg("%s - setting baud 9600bps", __FUNCTION__); | |
1036 | break; | |
1037 | case B19200: | |
1038 | dbg("%s - setting baud 19200bps", __FUNCTION__); | |
1039 | break; | |
1040 | case B38400: | |
1041 | dbg("%s - setting baud 38400bps", __FUNCTION__); | |
1042 | break; | |
1043 | case B57600: | |
1044 | dbg("%s - setting baud 57600bps", __FUNCTION__); | |
1045 | break; | |
1046 | case B115200: | |
1047 | dbg("%s - setting baud 115200bps", __FUNCTION__); | |
1048 | break; | |
1049 | default: | |
1050 | dbg("%s - unknown masked baud rate", __FUNCTION__); | |
1da177e4 | 1051 | } |
3cb4a4f7 | 1052 | priv->line_control = (CONTROL_DTR | CONTROL_RTS); |
1da177e4 LT |
1053 | } |
1054 | spin_unlock_irqrestore(&priv->lock, flags); | |
1da177e4 | 1055 | |
b9db07fb LM |
1056 | dbg("%s - sending %d stop_bits, %d parity_enable, %d parity_type, " |
1057 | "%d data_bits (+5)", __FUNCTION__, stop_bits, | |
1058 | parity_enable, parity_type, data_bits); | |
1059 | ||
1060 | cypress_serial_control(port, baud_mask, data_bits, stop_bits, | |
1061 | parity_enable, parity_type, 0, CYPRESS_SET_CONFIG); | |
1da177e4 | 1062 | |
b9db07fb LM |
1063 | /* we perform a CYPRESS_GET_CONFIG so that the current settings are |
1064 | * filled into the private structure this should confirm that all is | |
1065 | * working if it returns what we just set */ | |
1da177e4 LT |
1066 | cypress_serial_control(port, 0, 0, 0, 0, 0, 0, CYPRESS_GET_CONFIG); |
1067 | ||
b9db07fb LM |
1068 | /* Here we can define custom tty settings for devices; the main tty |
1069 | * termios flag base comes from empeg.c */ | |
1da177e4 | 1070 | |
b9db07fb | 1071 | spin_lock_irqsave(&priv->lock, flags); |
1da177e4 | 1072 | if ( (priv->chiptype == CT_EARTHMATE) && (priv->baud_rate == 4800) ) { |
b9db07fb LM |
1073 | dbg("Using custom termios settings for a baud rate of " |
1074 | "4800bps."); | |
1da177e4 LT |
1075 | /* define custom termios settings for NMEA protocol */ |
1076 | ||
1da177e4 | 1077 | tty->termios->c_iflag /* input modes - */ |
b9db07fb LM |
1078 | &= ~(IGNBRK /* disable ignore break */ |
1079 | | BRKINT /* disable break causes interrupt */ | |
1080 | | PARMRK /* disable mark parity errors */ | |
1081 | | ISTRIP /* disable clear high bit of input char */ | |
1082 | | INLCR /* disable translate NL to CR */ | |
1083 | | IGNCR /* disable ignore CR */ | |
1084 | | ICRNL /* disable translate CR to NL */ | |
1085 | | IXON); /* disable enable XON/XOFF flow control */ | |
1086 | ||
1da177e4 | 1087 | tty->termios->c_oflag /* output modes */ |
b9db07fb | 1088 | &= ~OPOST; /* disable postprocess output char */ |
1da177e4 | 1089 | |
b9db07fb LM |
1090 | tty->termios->c_lflag /* line discipline modes */ |
1091 | &= ~(ECHO /* disable echo input characters */ | |
1092 | | ECHONL /* disable echo new line */ | |
1093 | | ICANON /* disable erase, kill, werase, and rprnt | |
1094 | special characters */ | |
1095 | | ISIG /* disable interrupt, quit, and suspend | |
1096 | special characters */ | |
1097 | | IEXTEN); /* disable non-POSIX special characters */ | |
3cb4a4f7 | 1098 | } /* CT_CYPHIDCOM: Application should handle this for device */ |
1da177e4 | 1099 | |
1da177e4 LT |
1100 | linechange = (priv->line_control != oldlines); |
1101 | spin_unlock_irqrestore(&priv->lock, flags); | |
1102 | ||
1103 | /* if necessary, set lines */ | |
3cb4a4f7 | 1104 | if (linechange) { |
1da177e4 LT |
1105 | priv->cmd_ctrl = 1; |
1106 | cypress_write(port, NULL, 0); | |
1107 | } | |
1da177e4 LT |
1108 | } /* cypress_set_termios */ |
1109 | ||
b9db07fb | 1110 | |
1da177e4 LT |
1111 | /* returns amount of data still left in soft buffer */ |
1112 | static int cypress_chars_in_buffer(struct usb_serial_port *port) | |
1113 | { | |
1114 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
1115 | int chars = 0; | |
1116 | unsigned long flags; | |
1117 | ||
1118 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1119 | ||
1120 | spin_lock_irqsave(&priv->lock, flags); | |
1121 | chars = cypress_buf_data_avail(priv->buf); | |
1122 | spin_unlock_irqrestore(&priv->lock, flags); | |
1123 | ||
1124 | dbg("%s - returns %d", __FUNCTION__, chars); | |
1125 | return chars; | |
1126 | } | |
1127 | ||
1128 | ||
1129 | static void cypress_throttle (struct usb_serial_port *port) | |
1130 | { | |
1131 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
1132 | unsigned long flags; | |
1133 | ||
1134 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1135 | ||
1136 | spin_lock_irqsave(&priv->lock, flags); | |
1137 | priv->rx_flags = THROTTLED; | |
b9db07fb | 1138 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 LT |
1139 | } |
1140 | ||
1141 | ||
1142 | static void cypress_unthrottle (struct usb_serial_port *port) | |
1143 | { | |
1144 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
1145 | int actually_throttled, result; | |
1146 | unsigned long flags; | |
1147 | ||
1148 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1149 | ||
1150 | spin_lock_irqsave(&priv->lock, flags); | |
1151 | actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; | |
1152 | priv->rx_flags = 0; | |
1153 | spin_unlock_irqrestore(&priv->lock, flags); | |
1154 | ||
1155 | if (actually_throttled) { | |
1156 | port->interrupt_in_urb->dev = port->serial->dev; | |
1157 | ||
1158 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); | |
1159 | if (result) | |
b9db07fb LM |
1160 | dev_err(&port->dev, "%s - failed submitting read urb, " |
1161 | "error %d\n", __FUNCTION__, result); | |
1da177e4 LT |
1162 | } |
1163 | } | |
1164 | ||
1165 | ||
1166 | static void cypress_read_int_callback(struct urb *urb, struct pt_regs *regs) | |
1167 | { | |
1168 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1169 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
1170 | struct tty_struct *tty; | |
1171 | unsigned char *data = urb->transfer_buffer; | |
1172 | unsigned long flags; | |
b9db07fb | 1173 | char tty_flag = TTY_NORMAL; |
1da177e4 LT |
1174 | int havedata = 0; |
1175 | int bytes = 0; | |
1176 | int result; | |
1177 | int i = 0; | |
1178 | ||
1179 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1180 | ||
1181 | if (urb->status) { | |
b9db07fb LM |
1182 | dbg("%s - nonzero read status received: %d", __FUNCTION__, |
1183 | urb->status); | |
1da177e4 LT |
1184 | return; |
1185 | } | |
1186 | ||
1187 | spin_lock_irqsave(&priv->lock, flags); | |
1188 | if (priv->rx_flags & THROTTLED) { | |
1189 | dbg("%s - now throttling", __FUNCTION__); | |
1190 | priv->rx_flags |= ACTUALLY_THROTTLED; | |
1191 | spin_unlock_irqrestore(&priv->lock, flags); | |
1192 | return; | |
1193 | } | |
1194 | spin_unlock_irqrestore(&priv->lock, flags); | |
1195 | ||
1196 | tty = port->tty; | |
1197 | if (!tty) { | |
1198 | dbg("%s - bad tty pointer - exiting", __FUNCTION__); | |
1199 | return; | |
1200 | } | |
1201 | ||
1202 | spin_lock_irqsave(&priv->lock, flags); | |
1203 | switch(urb->actual_length) { | |
1204 | case 32: | |
3cb4a4f7 | 1205 | /* This is for the CY7C64013... */ |
1da177e4 | 1206 | priv->current_status = data[0] & 0xF8; |
b9db07fb LM |
1207 | bytes = data[1] + 2; |
1208 | i = 2; | |
1da177e4 LT |
1209 | if (bytes > 2) |
1210 | havedata = 1; | |
1211 | break; | |
1212 | case 8: | |
3cb4a4f7 | 1213 | /* This is for the CY7C63743... */ |
1da177e4 | 1214 | priv->current_status = data[0] & 0xF8; |
b9db07fb LM |
1215 | bytes = (data[0] & 0x07) + 1; |
1216 | i = 1; | |
1da177e4 LT |
1217 | if (bytes > 1) |
1218 | havedata = 1; | |
1219 | break; | |
1220 | default: | |
b9db07fb LM |
1221 | dbg("%s - wrong packet size - received %d bytes", |
1222 | __FUNCTION__, urb->actual_length); | |
1da177e4 LT |
1223 | spin_unlock_irqrestore(&priv->lock, flags); |
1224 | goto continue_read; | |
1225 | } | |
1226 | spin_unlock_irqrestore(&priv->lock, flags); | |
1227 | ||
b9db07fb LM |
1228 | usb_serial_debug_data (debug, &port->dev, __FUNCTION__, |
1229 | urb->actual_length, data); | |
1da177e4 LT |
1230 | |
1231 | spin_lock_irqsave(&priv->lock, flags); | |
1232 | /* check to see if status has changed */ | |
1233 | if (priv != NULL) { | |
1234 | if (priv->current_status != priv->prev_status) { | |
b9db07fb LM |
1235 | priv->diff_status |= priv->current_status ^ |
1236 | priv->prev_status; | |
1da177e4 LT |
1237 | wake_up_interruptible(&priv->delta_msr_wait); |
1238 | priv->prev_status = priv->current_status; | |
1239 | } | |
1240 | } | |
b9db07fb | 1241 | spin_unlock_irqrestore(&priv->lock, flags); |
1da177e4 | 1242 | |
b9db07fb LM |
1243 | /* hangup, as defined in acm.c... this might be a bad place for it |
1244 | * though */ | |
1245 | if (tty && !(tty->termios->c_cflag & CLOCAL) && | |
1246 | !(priv->current_status & UART_CD)) { | |
1da177e4 LT |
1247 | dbg("%s - calling hangup", __FUNCTION__); |
1248 | tty_hangup(tty); | |
1249 | goto continue_read; | |
1250 | } | |
1251 | ||
b9db07fb LM |
1252 | /* There is one error bit... I'm assuming it is a parity error |
1253 | * indicator as the generic firmware will set this bit to 1 if a | |
1254 | * parity error occurs. | |
1255 | * I can not find reference to any other error events. */ | |
1da177e4 LT |
1256 | spin_lock_irqsave(&priv->lock, flags); |
1257 | if (priv->current_status & CYP_ERROR) { | |
1258 | spin_unlock_irqrestore(&priv->lock, flags); | |
1259 | tty_flag = TTY_PARITY; | |
1260 | dbg("%s - Parity Error detected", __FUNCTION__); | |
1261 | } else | |
1262 | spin_unlock_irqrestore(&priv->lock, flags); | |
1263 | ||
1264 | /* process read if there is data other than line status */ | |
1265 | if (tty && (bytes > i)) { | |
33f0f88f | 1266 | bytes = tty_buffer_request_room(tty, bytes); |
1da177e4 | 1267 | for (; i < bytes ; ++i) { |
b9db07fb LM |
1268 | dbg("pushing byte number %d - %d - %c", i, data[i], |
1269 | data[i]); | |
1da177e4 LT |
1270 | tty_insert_flip_char(tty, data[i], tty_flag); |
1271 | } | |
1272 | tty_flip_buffer_push(port->tty); | |
1273 | } | |
1274 | ||
1275 | spin_lock_irqsave(&priv->lock, flags); | |
b9db07fb LM |
1276 | /* control and status byte(s) are also counted */ |
1277 | priv->bytes_in += bytes; | |
1da177e4 LT |
1278 | spin_unlock_irqrestore(&priv->lock, flags); |
1279 | ||
1280 | continue_read: | |
b9db07fb LM |
1281 | |
1282 | /* Continue trying to always read... unless the port has closed. */ | |
1da177e4 LT |
1283 | |
1284 | if (port->open_count > 0) { | |
b9db07fb LM |
1285 | usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev, |
1286 | usb_rcvintpipe(port->serial->dev, | |
1287 | port->interrupt_in_endpointAddress), | |
1288 | port->interrupt_in_urb->transfer_buffer, | |
1289 | port->interrupt_in_urb->transfer_buffer_length, | |
1290 | cypress_read_int_callback, port, interval); | |
1291 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); | |
1292 | if (result) | |
1293 | dev_err(&urb->dev->dev, "%s - failed resubmitting " | |
1294 | "read urb, error %d\n", __FUNCTION__, | |
1295 | result); | |
1da177e4 | 1296 | } |
b9db07fb | 1297 | |
1da177e4 LT |
1298 | return; |
1299 | } /* cypress_read_int_callback */ | |
1300 | ||
1301 | ||
1302 | static void cypress_write_int_callback(struct urb *urb, struct pt_regs *regs) | |
1303 | { | |
1304 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1305 | struct cypress_private *priv = usb_get_serial_port_data(port); | |
1306 | int result; | |
1307 | ||
1308 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1309 | ||
1310 | switch (urb->status) { | |
1311 | case 0: | |
1312 | /* success */ | |
1313 | break; | |
1314 | case -ECONNRESET: | |
1315 | case -ENOENT: | |
1316 | case -ESHUTDOWN: | |
1317 | /* this urb is terminated, clean up */ | |
1318 | dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); | |
1319 | priv->write_urb_in_use = 0; | |
1320 | return; | |
3cb4a4f7 LM |
1321 | case -EPIPE: /* no break needed */ |
1322 | usb_clear_halt(port->serial->dev, 0x02); | |
1da177e4 LT |
1323 | default: |
1324 | /* error in the urb, so we have to resubmit it */ | |
1325 | dbg("%s - Overflow in write", __FUNCTION__); | |
1326 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); | |
1327 | port->interrupt_out_urb->transfer_buffer_length = 1; | |
1328 | port->interrupt_out_urb->dev = port->serial->dev; | |
1329 | result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC); | |
1330 | if (result) | |
1331 | dev_err(&urb->dev->dev, "%s - failed resubmitting write urb, error %d\n", | |
1332 | __FUNCTION__, result); | |
1333 | else | |
1334 | return; | |
1335 | } | |
1336 | ||
1337 | priv->write_urb_in_use = 0; | |
1338 | ||
1339 | /* send any buffered data */ | |
1340 | cypress_send(port); | |
1341 | } | |
1342 | ||
1343 | ||
1344 | /***************************************************************************** | |
1345 | * Write buffer functions - buffering code from pl2303 used | |
1346 | *****************************************************************************/ | |
1347 | ||
1348 | /* | |
1349 | * cypress_buf_alloc | |
1350 | * | |
1351 | * Allocate a circular buffer and all associated memory. | |
1352 | */ | |
1353 | ||
1354 | static struct cypress_buf *cypress_buf_alloc(unsigned int size) | |
1355 | { | |
1356 | ||
1357 | struct cypress_buf *cb; | |
1358 | ||
1359 | ||
1360 | if (size == 0) | |
1361 | return NULL; | |
1362 | ||
1363 | cb = (struct cypress_buf *)kmalloc(sizeof(struct cypress_buf), GFP_KERNEL); | |
1364 | if (cb == NULL) | |
1365 | return NULL; | |
1366 | ||
1367 | cb->buf_buf = kmalloc(size, GFP_KERNEL); | |
1368 | if (cb->buf_buf == NULL) { | |
1369 | kfree(cb); | |
1370 | return NULL; | |
1371 | } | |
1372 | ||
1373 | cb->buf_size = size; | |
1374 | cb->buf_get = cb->buf_put = cb->buf_buf; | |
1375 | ||
1376 | return cb; | |
1377 | ||
1378 | } | |
1379 | ||
1380 | ||
1381 | /* | |
1382 | * cypress_buf_free | |
1383 | * | |
1384 | * Free the buffer and all associated memory. | |
1385 | */ | |
1386 | ||
1387 | static void cypress_buf_free(struct cypress_buf *cb) | |
1388 | { | |
1bc3c9e1 JJ |
1389 | if (cb) { |
1390 | kfree(cb->buf_buf); | |
1da177e4 LT |
1391 | kfree(cb); |
1392 | } | |
1393 | } | |
1394 | ||
1395 | ||
1396 | /* | |
1397 | * cypress_buf_clear | |
1398 | * | |
1399 | * Clear out all data in the circular buffer. | |
1400 | */ | |
1401 | ||
1402 | static void cypress_buf_clear(struct cypress_buf *cb) | |
1403 | { | |
1404 | if (cb != NULL) | |
1405 | cb->buf_get = cb->buf_put; | |
1406 | /* equivalent to a get of all data available */ | |
1407 | } | |
1408 | ||
1409 | ||
1410 | /* | |
1411 | * cypress_buf_data_avail | |
1412 | * | |
1413 | * Return the number of bytes of data available in the circular | |
1414 | * buffer. | |
1415 | */ | |
1416 | ||
1417 | static unsigned int cypress_buf_data_avail(struct cypress_buf *cb) | |
1418 | { | |
1419 | if (cb != NULL) | |
1420 | return ((cb->buf_size + cb->buf_put - cb->buf_get) % cb->buf_size); | |
1421 | else | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | ||
1426 | /* | |
1427 | * cypress_buf_space_avail | |
1428 | * | |
1429 | * Return the number of bytes of space available in the circular | |
1430 | * buffer. | |
1431 | */ | |
1432 | ||
1433 | static unsigned int cypress_buf_space_avail(struct cypress_buf *cb) | |
1434 | { | |
1435 | if (cb != NULL) | |
1436 | return ((cb->buf_size + cb->buf_get - cb->buf_put - 1) % cb->buf_size); | |
1437 | else | |
1438 | return 0; | |
1439 | } | |
1440 | ||
1441 | ||
1442 | /* | |
1443 | * cypress_buf_put | |
1444 | * | |
1445 | * Copy data data from a user buffer and put it into the circular buffer. | |
1446 | * Restrict to the amount of space available. | |
1447 | * | |
1448 | * Return the number of bytes copied. | |
1449 | */ | |
1450 | ||
1451 | static unsigned int cypress_buf_put(struct cypress_buf *cb, const char *buf, | |
1452 | unsigned int count) | |
1453 | { | |
1454 | ||
1455 | unsigned int len; | |
1456 | ||
1457 | ||
1458 | if (cb == NULL) | |
1459 | return 0; | |
1460 | ||
1461 | len = cypress_buf_space_avail(cb); | |
1462 | if (count > len) | |
1463 | count = len; | |
1464 | ||
1465 | if (count == 0) | |
1466 | return 0; | |
1467 | ||
1468 | len = cb->buf_buf + cb->buf_size - cb->buf_put; | |
1469 | if (count > len) { | |
1470 | memcpy(cb->buf_put, buf, len); | |
1471 | memcpy(cb->buf_buf, buf+len, count - len); | |
1472 | cb->buf_put = cb->buf_buf + count - len; | |
1473 | } else { | |
1474 | memcpy(cb->buf_put, buf, count); | |
1475 | if (count < len) | |
1476 | cb->buf_put += count; | |
1477 | else /* count == len */ | |
1478 | cb->buf_put = cb->buf_buf; | |
1479 | } | |
1480 | ||
1481 | return count; | |
1482 | ||
1483 | } | |
1484 | ||
1485 | ||
1486 | /* | |
1487 | * cypress_buf_get | |
1488 | * | |
1489 | * Get data from the circular buffer and copy to the given buffer. | |
1490 | * Restrict to the amount of data available. | |
1491 | * | |
1492 | * Return the number of bytes copied. | |
1493 | */ | |
1494 | ||
1495 | static unsigned int cypress_buf_get(struct cypress_buf *cb, char *buf, | |
1496 | unsigned int count) | |
1497 | { | |
1498 | ||
1499 | unsigned int len; | |
1500 | ||
1501 | ||
1502 | if (cb == NULL) | |
1503 | return 0; | |
1504 | ||
1505 | len = cypress_buf_data_avail(cb); | |
1506 | if (count > len) | |
1507 | count = len; | |
1508 | ||
1509 | if (count == 0) | |
1510 | return 0; | |
1511 | ||
1512 | len = cb->buf_buf + cb->buf_size - cb->buf_get; | |
1513 | if (count > len) { | |
1514 | memcpy(buf, cb->buf_get, len); | |
1515 | memcpy(buf+len, cb->buf_buf, count - len); | |
1516 | cb->buf_get = cb->buf_buf + count - len; | |
1517 | } else { | |
1518 | memcpy(buf, cb->buf_get, count); | |
1519 | if (count < len) | |
1520 | cb->buf_get += count; | |
1521 | else /* count == len */ | |
1522 | cb->buf_get = cb->buf_buf; | |
1523 | } | |
1524 | ||
1525 | return count; | |
1526 | ||
1527 | } | |
1528 | ||
1529 | /***************************************************************************** | |
1530 | * Module functions | |
1531 | *****************************************************************************/ | |
1532 | ||
1533 | static int __init cypress_init(void) | |
1534 | { | |
1535 | int retval; | |
1536 | ||
1537 | dbg("%s", __FUNCTION__); | |
1538 | ||
1539 | retval = usb_serial_register(&cypress_earthmate_device); | |
1540 | if (retval) | |
1541 | goto failed_em_register; | |
1542 | retval = usb_serial_register(&cypress_hidcom_device); | |
1543 | if (retval) | |
1544 | goto failed_hidcom_register; | |
1545 | retval = usb_register(&cypress_driver); | |
1546 | if (retval) | |
1547 | goto failed_usb_register; | |
1548 | ||
1549 | info(DRIVER_DESC " " DRIVER_VERSION); | |
1550 | return 0; | |
1551 | failed_usb_register: | |
1552 | usb_deregister(&cypress_driver); | |
1553 | failed_hidcom_register: | |
1554 | usb_serial_deregister(&cypress_hidcom_device); | |
1555 | failed_em_register: | |
1556 | usb_serial_deregister(&cypress_earthmate_device); | |
1557 | ||
1558 | return retval; | |
1559 | } | |
1560 | ||
1561 | ||
1562 | static void __exit cypress_exit (void) | |
1563 | { | |
1564 | dbg("%s", __FUNCTION__); | |
1565 | ||
1566 | usb_deregister (&cypress_driver); | |
1567 | usb_serial_deregister (&cypress_earthmate_device); | |
1568 | usb_serial_deregister (&cypress_hidcom_device); | |
1569 | } | |
1570 | ||
1571 | ||
1572 | module_init(cypress_init); | |
1573 | module_exit(cypress_exit); | |
1574 | ||
1575 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
1576 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
1577 | MODULE_VERSION( DRIVER_VERSION ); | |
1578 | MODULE_LICENSE("GPL"); | |
1579 | ||
1580 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1581 | MODULE_PARM_DESC(debug, "Debug enabled or not"); | |
1582 | module_param(stats, bool, S_IRUGO | S_IWUSR); | |
1583 | MODULE_PARM_DESC(stats, "Enable statistics or not"); | |
3cb4a4f7 LM |
1584 | module_param(interval, int, S_IRUGO | S_IWUSR); |
1585 | MODULE_PARM_DESC(interval, "Overrides interrupt interval"); |