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0f64478c GKH |
1 | /* |
2 | * mos7720.c | |
3 | * Controls the Moschip 7720 usb to dual port serial convertor | |
4 | * | |
5 | * Copyright 2006 Moschip Semiconductor Tech. Ltd. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, version 2 of the License. | |
10 | * | |
11 | * Developed by: | |
50d2dc72 GKH |
12 | * Vijaya Kumar <vijaykumar.gn@gmail.com> |
13 | * Ajay Kumar <naanuajay@yahoo.com> | |
14 | * Gurudeva <ngurudeva@yahoo.com> | |
0f64478c GKH |
15 | * |
16 | * Cleaned up from the original by: | |
17 | * Greg Kroah-Hartman <gregkh@suse.de> | |
18 | * | |
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
22 | */ | |
23 | #include <linux/kernel.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/tty.h> | |
28 | #include <linux/tty_driver.h> | |
29 | #include <linux/tty_flip.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/spinlock.h> | |
32 | #include <linux/serial.h> | |
33 | #include <linux/serial_reg.h> | |
34 | #include <linux/usb.h> | |
35 | #include <linux/usb/serial.h> | |
4da1a17d | 36 | #include <linux/uaccess.h> |
0f64478c GKH |
37 | |
38 | ||
39 | /* | |
40 | * Version Information | |
41 | */ | |
42 | #define DRIVER_VERSION "1.0.0.4F" | |
43 | #define DRIVER_AUTHOR "Aspire Communications pvt Ltd." | |
44 | #define DRIVER_DESC "Moschip USB Serial Driver" | |
45 | ||
46 | /* default urb timeout */ | |
47 | #define MOS_WDR_TIMEOUT (HZ * 5) | |
48 | ||
49 | #define MOS_PORT1 0x0200 | |
50 | #define MOS_PORT2 0x0300 | |
51 | #define MOS_VENREG 0x0000 | |
52 | #define MOS_MAX_PORT 0x02 | |
53 | #define MOS_WRITE 0x0E | |
54 | #define MOS_READ 0x0D | |
55 | ||
56 | /* Interrupt Rotinue Defines */ | |
57 | #define SERIAL_IIR_RLS 0x06 | |
58 | #define SERIAL_IIR_RDA 0x04 | |
59 | #define SERIAL_IIR_CTI 0x0c | |
60 | #define SERIAL_IIR_THR 0x02 | |
61 | #define SERIAL_IIR_MS 0x00 | |
62 | ||
63 | #define NUM_URBS 16 /* URB Count */ | |
64 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
65 | ||
66 | /* This structure holds all of the local port information */ | |
4da1a17d | 67 | struct moschip_port { |
0f64478c GKH |
68 | __u8 shadowLCR; /* last LCR value received */ |
69 | __u8 shadowMCR; /* last MCR value received */ | |
70 | __u8 shadowMSR; /* last MSR value received */ | |
71 | char open; | |
72 | struct async_icount icount; | |
73 | struct usb_serial_port *port; /* loop back to the owner */ | |
74 | struct urb *write_urb_pool[NUM_URBS]; | |
75 | }; | |
76 | ||
77 | /* This structure holds all of the individual serial device information */ | |
4da1a17d | 78 | struct moschip_serial { |
0f64478c GKH |
79 | int interrupt_started; |
80 | }; | |
81 | ||
82 | static int debug; | |
83 | ||
84 | #define USB_VENDOR_ID_MOSCHIP 0x9710 | |
85 | #define MOSCHIP_DEVICE_ID_7720 0x7720 | |
86 | #define MOSCHIP_DEVICE_ID_7715 0x7715 | |
87 | ||
88 | static struct usb_device_id moschip_port_id_table [] = { | |
4da1a17d | 89 | { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7720) }, |
0f64478c GKH |
90 | { } /* terminating entry */ |
91 | }; | |
92 | MODULE_DEVICE_TABLE(usb, moschip_port_id_table); | |
93 | ||
94 | ||
95 | /* | |
96 | * mos7720_interrupt_callback | |
97 | * this is the callback function for when we have received data on the | |
98 | * interrupt endpoint. | |
99 | */ | |
100 | static void mos7720_interrupt_callback(struct urb *urb) | |
101 | { | |
102 | int result; | |
103 | int length; | |
81105984 | 104 | int status = urb->status; |
325b70c2 | 105 | __u8 *data; |
0f64478c GKH |
106 | __u8 sp1; |
107 | __u8 sp2; | |
0f64478c | 108 | |
4da1a17d | 109 | dbg("%s", " : Entering\n"); |
0f64478c | 110 | |
81105984 | 111 | switch (status) { |
0f64478c GKH |
112 | case 0: |
113 | /* success */ | |
114 | break; | |
115 | case -ECONNRESET: | |
116 | case -ENOENT: | |
117 | case -ESHUTDOWN: | |
118 | /* this urb is terminated, clean up */ | |
441b62c1 | 119 | dbg("%s - urb shutting down with status: %d", __func__, |
81105984 | 120 | status); |
0f64478c GKH |
121 | return; |
122 | default: | |
441b62c1 | 123 | dbg("%s - nonzero urb status received: %d", __func__, |
81105984 | 124 | status); |
0f64478c GKH |
125 | goto exit; |
126 | } | |
127 | ||
128 | length = urb->actual_length; | |
129 | data = urb->transfer_buffer; | |
130 | ||
131 | /* Moschip get 4 bytes | |
132 | * Byte 1 IIR Port 1 (port.number is 0) | |
133 | * Byte 2 IIR Port 2 (port.number is 1) | |
134 | * Byte 3 -------------- | |
135 | * Byte 4 FIFO status for both */ | |
325b70c2 ON |
136 | |
137 | /* the above description is inverted | |
138 | * oneukum 2007-03-14 */ | |
139 | ||
140 | if (unlikely(length != 4)) { | |
0f64478c GKH |
141 | dbg("Wrong data !!!"); |
142 | return; | |
143 | } | |
144 | ||
325b70c2 ON |
145 | sp1 = data[3]; |
146 | sp2 = data[2]; | |
0f64478c | 147 | |
325b70c2 | 148 | if ((sp1 | sp2) & 0x01) { |
0f64478c GKH |
149 | /* No Interrupt Pending in both the ports */ |
150 | dbg("No Interrupt !!!"); | |
151 | } else { | |
152 | switch (sp1 & 0x0f) { | |
153 | case SERIAL_IIR_RLS: | |
154 | dbg("Serial Port 1: Receiver status error or address " | |
155 | "bit detected in 9-bit mode\n"); | |
156 | break; | |
157 | case SERIAL_IIR_CTI: | |
158 | dbg("Serial Port 1: Receiver time out"); | |
159 | break; | |
160 | case SERIAL_IIR_MS: | |
161 | dbg("Serial Port 1: Modem status change"); | |
162 | break; | |
163 | } | |
164 | ||
165 | switch (sp2 & 0x0f) { | |
166 | case SERIAL_IIR_RLS: | |
167 | dbg("Serial Port 2: Receiver status error or address " | |
168 | "bit detected in 9-bit mode"); | |
169 | break; | |
170 | case SERIAL_IIR_CTI: | |
171 | dbg("Serial Port 2: Receiver time out"); | |
172 | break; | |
173 | case SERIAL_IIR_MS: | |
174 | dbg("Serial Port 2: Modem status change"); | |
175 | break; | |
176 | } | |
177 | } | |
178 | ||
179 | exit: | |
180 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
181 | if (result) | |
182 | dev_err(&urb->dev->dev, | |
183 | "%s - Error %d submitting control urb\n", | |
441b62c1 | 184 | __func__, result); |
0f64478c GKH |
185 | return; |
186 | } | |
187 | ||
188 | /* | |
189 | * mos7720_bulk_in_callback | |
190 | * this is the callback function for when we have received data on the | |
191 | * bulk in endpoint. | |
192 | */ | |
193 | static void mos7720_bulk_in_callback(struct urb *urb) | |
194 | { | |
81105984 | 195 | int retval; |
0f64478c GKH |
196 | unsigned char *data ; |
197 | struct usb_serial_port *port; | |
198 | struct moschip_port *mos7720_port; | |
199 | struct tty_struct *tty; | |
81105984 | 200 | int status = urb->status; |
0f64478c | 201 | |
81105984 GKH |
202 | if (status) { |
203 | dbg("nonzero read bulk status received: %d", status); | |
0f64478c GKH |
204 | return; |
205 | } | |
206 | ||
207 | mos7720_port = urb->context; | |
208 | if (!mos7720_port) { | |
4da1a17d | 209 | dbg("%s", "NULL mos7720_port pointer \n"); |
0f64478c GKH |
210 | return ; |
211 | } | |
212 | ||
213 | port = mos7720_port->port; | |
214 | ||
441b62c1 | 215 | dbg("Entering...%s", __func__); |
0f64478c GKH |
216 | |
217 | data = urb->transfer_buffer; | |
218 | ||
4a90f09b | 219 | tty = tty_port_tty_get(&port->port); |
0f64478c GKH |
220 | if (tty && urb->actual_length) { |
221 | tty_buffer_request_room(tty, urb->actual_length); | |
222 | tty_insert_flip_string(tty, data, urb->actual_length); | |
223 | tty_flip_buffer_push(tty); | |
224 | } | |
4a90f09b | 225 | tty_kref_put(tty); |
0f64478c GKH |
226 | |
227 | if (!port->read_urb) { | |
228 | dbg("URB KILLED !!!"); | |
229 | return; | |
230 | } | |
231 | ||
232 | if (port->read_urb->status != -EINPROGRESS) { | |
233 | port->read_urb->dev = port->serial->dev; | |
234 | ||
81105984 GKH |
235 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
236 | if (retval) | |
237 | dbg("usb_submit_urb(read bulk) failed, retval = %d", | |
238 | retval); | |
0f64478c GKH |
239 | } |
240 | } | |
241 | ||
242 | /* | |
243 | * mos7720_bulk_out_data_callback | |
244 | * this is the callback function for when we have finished sending serial | |
245 | * data on the bulk out endpoint. | |
246 | */ | |
247 | static void mos7720_bulk_out_data_callback(struct urb *urb) | |
248 | { | |
249 | struct moschip_port *mos7720_port; | |
250 | struct tty_struct *tty; | |
81105984 | 251 | int status = urb->status; |
0f64478c | 252 | |
81105984 GKH |
253 | if (status) { |
254 | dbg("nonzero write bulk status received:%d", status); | |
0f64478c GKH |
255 | return; |
256 | } | |
257 | ||
258 | mos7720_port = urb->context; | |
259 | if (!mos7720_port) { | |
260 | dbg("NULL mos7720_port pointer"); | |
261 | return ; | |
262 | } | |
263 | ||
264 | dbg("Entering ........."); | |
265 | ||
4a90f09b | 266 | tty = tty_port_tty_get(&mos7720_port->port->port); |
0f64478c | 267 | |
b963a844 JS |
268 | if (tty && mos7720_port->open) |
269 | tty_wakeup(tty); | |
4a90f09b | 270 | tty_kref_put(tty); |
0f64478c GKH |
271 | } |
272 | ||
273 | /* | |
274 | * send_mos_cmd | |
275 | * this function will be used for sending command to device | |
276 | */ | |
277 | static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value, | |
278 | __u16 index, void *data) | |
279 | { | |
280 | int status; | |
281 | unsigned int pipe; | |
282 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); | |
283 | __u8 requesttype; | |
284 | __u16 size = 0x0000; | |
285 | ||
286 | if (value < MOS_MAX_PORT) { | |
4da1a17d | 287 | if (product == MOSCHIP_DEVICE_ID_7715) |
0f64478c | 288 | value = value*0x100+0x100; |
4da1a17d | 289 | else |
0f64478c | 290 | value = value*0x100+0x200; |
0f64478c GKH |
291 | } else { |
292 | value = 0x0000; | |
293 | if ((product == MOSCHIP_DEVICE_ID_7715) && | |
294 | (index != 0x08)) { | |
295 | dbg("serial->product== MOSCHIP_DEVICE_ID_7715"); | |
4da1a17d | 296 | /* index = 0x01 ; */ |
0f64478c GKH |
297 | } |
298 | } | |
299 | ||
300 | if (request == MOS_WRITE) { | |
301 | request = (__u8)MOS_WRITE; | |
302 | requesttype = (__u8)0x40; | |
303 | value = value + (__u16)*((unsigned char *)data); | |
304 | data = NULL; | |
305 | pipe = usb_sndctrlpipe(serial->dev, 0); | |
306 | } else { | |
307 | request = (__u8)MOS_READ; | |
308 | requesttype = (__u8)0xC0; | |
309 | size = 0x01; | |
4da1a17d | 310 | pipe = usb_rcvctrlpipe(serial->dev, 0); |
0f64478c GKH |
311 | } |
312 | ||
313 | status = usb_control_msg(serial->dev, pipe, request, requesttype, | |
314 | value, index, data, size, MOS_WDR_TIMEOUT); | |
315 | ||
316 | if (status < 0) | |
4da1a17d | 317 | dbg("Command Write failed Value %x index %x\n", value, index); |
0f64478c GKH |
318 | |
319 | return status; | |
320 | } | |
321 | ||
95da310e | 322 | static int mos7720_open(struct tty_struct *tty, |
4da1a17d | 323 | struct usb_serial_port *port, struct file *filp) |
0f64478c GKH |
324 | { |
325 | struct usb_serial *serial; | |
326 | struct usb_serial_port *port0; | |
327 | struct urb *urb; | |
328 | struct moschip_serial *mos7720_serial; | |
329 | struct moschip_port *mos7720_port; | |
330 | int response; | |
331 | int port_number; | |
332 | char data; | |
fe4b65ec | 333 | int allocated_urbs = 0; |
0f64478c GKH |
334 | int j; |
335 | ||
336 | serial = port->serial; | |
337 | ||
338 | mos7720_port = usb_get_serial_port_data(port); | |
339 | if (mos7720_port == NULL) | |
340 | return -ENODEV; | |
341 | ||
342 | port0 = serial->port[0]; | |
343 | ||
344 | mos7720_serial = usb_get_serial_data(serial); | |
345 | ||
346 | if (mos7720_serial == NULL || port0 == NULL) | |
347 | return -ENODEV; | |
348 | ||
349 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
350 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
351 | ||
352 | /* Initialising the write urb pool */ | |
353 | for (j = 0; j < NUM_URBS; ++j) { | |
4da1a17d | 354 | urb = usb_alloc_urb(0, GFP_KERNEL); |
0f64478c GKH |
355 | mos7720_port->write_urb_pool[j] = urb; |
356 | ||
357 | if (urb == NULL) { | |
194343d9 | 358 | dev_err(&port->dev, "No more urbs???\n"); |
0f64478c GKH |
359 | continue; |
360 | } | |
361 | ||
362 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
363 | GFP_KERNEL); | |
364 | if (!urb->transfer_buffer) { | |
194343d9 GKH |
365 | dev_err(&port->dev, |
366 | "%s-out of memory for urb buffers.\n", | |
367 | __func__); | |
fe4b65ec ON |
368 | usb_free_urb(mos7720_port->write_urb_pool[j]); |
369 | mos7720_port->write_urb_pool[j] = NULL; | |
0f64478c GKH |
370 | continue; |
371 | } | |
fe4b65ec | 372 | allocated_urbs++; |
0f64478c GKH |
373 | } |
374 | ||
fe4b65ec ON |
375 | if (!allocated_urbs) |
376 | return -ENOMEM; | |
377 | ||
0f64478c GKH |
378 | /* Initialize MCS7720 -- Write Init values to corresponding Registers |
379 | * | |
380 | * Register Index | |
381 | * 1 : IER | |
382 | * 2 : FCR | |
383 | * 3 : LCR | |
384 | * 4 : MCR | |
385 | * | |
386 | * 0x08 : SP1/2 Control Reg | |
387 | */ | |
388 | port_number = port->number - port->serial->minor; | |
389 | send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data); | |
4da1a17d | 390 | dbg("SS::%p LSR:%x\n", mos7720_port, data); |
0f64478c GKH |
391 | |
392 | dbg("Check:Sending Command .........."); | |
393 | ||
394 | data = 0x02; | |
395 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x01, &data); | |
396 | data = 0x02; | |
397 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x02, &data); | |
398 | ||
399 | data = 0x00; | |
400 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
401 | data = 0x00; | |
402 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
403 | ||
404 | data = 0xCF; | |
405 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
406 | data = 0x03; | |
4da1a17d | 407 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
408 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
409 | data = 0x0b; | |
4da1a17d | 410 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
411 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
412 | data = 0x0b; | |
413 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
414 | ||
415 | data = 0x00; | |
416 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
417 | data = 0x00; | |
418 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
419 | ||
420 | /* data = 0x00; | |
421 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, port_number + 1, &data); | |
422 | data = 0x03; | |
423 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); | |
424 | data = 0x00; | |
4da1a17d AC |
425 | send_mos_cmd(port->serial, MOS_WRITE, MOS_MAX_PORT, |
426 | port_number + 1, &data); | |
0f64478c GKH |
427 | */ |
428 | data = 0x00; | |
429 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
430 | ||
431 | data = data | (port->number - port->serial->minor + 1); | |
432 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
433 | ||
434 | data = 0x83; | |
4da1a17d | 435 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
436 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
437 | data = 0x0c; | |
438 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); | |
439 | data = 0x00; | |
440 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
441 | data = 0x03; | |
4da1a17d | 442 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
443 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
444 | data = 0x0c; | |
445 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
446 | data = 0x0c; | |
447 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
448 | ||
0f64478c GKH |
449 | /* see if we've set up our endpoint info yet * |
450 | * (can't set it up in mos7720_startup as the * | |
451 | * structures were not set up at that time.) */ | |
452 | if (!mos7720_serial->interrupt_started) { | |
453 | dbg("Interrupt buffer NULL !!!"); | |
454 | ||
455 | /* not set up yet, so do it now */ | |
456 | mos7720_serial->interrupt_started = 1; | |
457 | ||
458 | dbg("To Submit URB !!!"); | |
459 | ||
460 | /* set up our interrupt urb */ | |
461 | usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, | |
4da1a17d AC |
462 | usb_rcvintpipe(serial->dev, |
463 | port->interrupt_in_endpointAddress), | |
464 | port0->interrupt_in_buffer, | |
465 | port0->interrupt_in_urb->transfer_buffer_length, | |
466 | mos7720_interrupt_callback, mos7720_port, | |
467 | port0->interrupt_in_urb->interval); | |
0f64478c GKH |
468 | |
469 | /* start interrupt read for this mos7720 this interrupt * | |
4da1a17d | 470 | * will continue as long as the mos7720 is connected */ |
0f64478c GKH |
471 | dbg("Submit URB over !!!"); |
472 | response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); | |
473 | if (response) | |
474 | dev_err(&port->dev, | |
898eb71c | 475 | "%s - Error %d submitting control urb\n", |
441b62c1 | 476 | __func__, response); |
0f64478c GKH |
477 | } |
478 | ||
479 | /* set up our bulk in urb */ | |
480 | usb_fill_bulk_urb(port->read_urb, serial->dev, | |
481 | usb_rcvbulkpipe(serial->dev, | |
4da1a17d | 482 | port->bulk_in_endpointAddress), |
0f64478c GKH |
483 | port->bulk_in_buffer, |
484 | port->read_urb->transfer_buffer_length, | |
485 | mos7720_bulk_in_callback, mos7720_port); | |
486 | response = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
487 | if (response) | |
4da1a17d AC |
488 | dev_err(&port->dev, "%s - Error %d submitting read urb\n", |
489 | __func__, response); | |
0f64478c GKH |
490 | |
491 | /* initialize our icount structure */ | |
492 | memset(&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount)); | |
493 | ||
494 | /* initialize our port settings */ | |
495 | mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ | |
496 | ||
497 | /* send a open port command */ | |
498 | mos7720_port->open = 1; | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | /* | |
504 | * mos7720_chars_in_buffer | |
505 | * this function is called by the tty driver when it wants to know how many | |
506 | * bytes of data we currently have outstanding in the port (data that has | |
507 | * been written, but hasn't made it out the port yet) | |
508 | * If successful, we return the number of bytes left to be written in the | |
509 | * system, | |
510 | * Otherwise we return a negative error number. | |
511 | */ | |
95da310e | 512 | static int mos7720_chars_in_buffer(struct tty_struct *tty) |
0f64478c | 513 | { |
95da310e | 514 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
515 | int i; |
516 | int chars = 0; | |
517 | struct moschip_port *mos7720_port; | |
518 | ||
441b62c1 | 519 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
520 | |
521 | mos7720_port = usb_get_serial_port_data(port); | |
522 | if (mos7720_port == NULL) { | |
441b62c1 | 523 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
524 | return -ENODEV; |
525 | } | |
526 | ||
527 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
528 | if (mos7720_port->write_urb_pool[i] && |
529 | mos7720_port->write_urb_pool[i]->status == -EINPROGRESS) | |
0f64478c GKH |
530 | chars += URB_TRANSFER_BUFFER_SIZE; |
531 | } | |
441b62c1 | 532 | dbg("%s - returns %d", __func__, chars); |
0f64478c GKH |
533 | return chars; |
534 | } | |
535 | ||
95da310e AC |
536 | static void mos7720_close(struct tty_struct *tty, |
537 | struct usb_serial_port *port, struct file *filp) | |
0f64478c GKH |
538 | { |
539 | struct usb_serial *serial; | |
540 | struct moschip_port *mos7720_port; | |
541 | char data; | |
542 | int j; | |
543 | ||
544 | dbg("mos7720_close:entering..."); | |
545 | ||
546 | serial = port->serial; | |
547 | ||
548 | mos7720_port = usb_get_serial_port_data(port); | |
549 | if (mos7720_port == NULL) | |
550 | return; | |
551 | ||
552 | for (j = 0; j < NUM_URBS; ++j) | |
553 | usb_kill_urb(mos7720_port->write_urb_pool[j]); | |
554 | ||
555 | /* Freeing Write URBs */ | |
556 | for (j = 0; j < NUM_URBS; ++j) { | |
557 | if (mos7720_port->write_urb_pool[j]) { | |
558 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); | |
559 | usb_free_urb(mos7720_port->write_urb_pool[j]); | |
560 | } | |
561 | } | |
562 | ||
563 | /* While closing port, shutdown all bulk read, write * | |
a1cd7e99 ON |
564 | * and interrupt read if they exists, otherwise nop */ |
565 | dbg("Shutdown bulk write"); | |
566 | usb_kill_urb(port->write_urb); | |
567 | dbg("Shutdown bulk read"); | |
568 | usb_kill_urb(port->read_urb); | |
569 | ||
570 | mutex_lock(&serial->disc_mutex); | |
571 | /* these commands must not be issued if the device has | |
572 | * been disconnected */ | |
573 | if (!serial->disconnected) { | |
574 | data = 0x00; | |
4da1a17d AC |
575 | send_mos_cmd(serial, MOS_WRITE, |
576 | port->number - port->serial->minor, 0x04, &data); | |
a1cd7e99 ON |
577 | |
578 | data = 0x00; | |
4da1a17d AC |
579 | send_mos_cmd(serial, MOS_WRITE, |
580 | port->number - port->serial->minor, 0x01, &data); | |
0f64478c | 581 | } |
a1cd7e99 | 582 | mutex_unlock(&serial->disc_mutex); |
0f64478c GKH |
583 | mos7720_port->open = 0; |
584 | ||
441b62c1 | 585 | dbg("Leaving %s", __func__); |
0f64478c GKH |
586 | } |
587 | ||
95da310e | 588 | static void mos7720_break(struct tty_struct *tty, int break_state) |
0f64478c | 589 | { |
95da310e | 590 | struct usb_serial_port *port = tty->driver_data; |
4da1a17d | 591 | unsigned char data; |
0f64478c GKH |
592 | struct usb_serial *serial; |
593 | struct moschip_port *mos7720_port; | |
594 | ||
441b62c1 | 595 | dbg("Entering %s", __func__); |
0f64478c GKH |
596 | |
597 | serial = port->serial; | |
598 | ||
599 | mos7720_port = usb_get_serial_port_data(port); | |
600 | if (mos7720_port == NULL) | |
601 | return; | |
602 | ||
603 | if (break_state == -1) | |
604 | data = mos7720_port->shadowLCR | UART_LCR_SBC; | |
605 | else | |
606 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; | |
607 | ||
608 | mos7720_port->shadowLCR = data; | |
609 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, | |
610 | 0x03, &data); | |
611 | ||
612 | return; | |
613 | } | |
614 | ||
615 | /* | |
616 | * mos7720_write_room | |
617 | * this function is called by the tty driver when it wants to know how many | |
618 | * bytes of data we can accept for a specific port. | |
619 | * If successful, we return the amount of room that we have for this port | |
620 | * Otherwise we return a negative error number. | |
621 | */ | |
95da310e | 622 | static int mos7720_write_room(struct tty_struct *tty) |
0f64478c | 623 | { |
95da310e | 624 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
625 | struct moschip_port *mos7720_port; |
626 | int room = 0; | |
627 | int i; | |
628 | ||
441b62c1 | 629 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
630 | |
631 | mos7720_port = usb_get_serial_port_data(port); | |
632 | if (mos7720_port == NULL) { | |
441b62c1 | 633 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
634 | return -ENODEV; |
635 | } | |
636 | ||
a5b6f60c | 637 | /* FIXME: Locking */ |
0f64478c | 638 | for (i = 0; i < NUM_URBS; ++i) { |
4da1a17d AC |
639 | if (mos7720_port->write_urb_pool[i] && |
640 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) | |
0f64478c GKH |
641 | room += URB_TRANSFER_BUFFER_SIZE; |
642 | } | |
643 | ||
441b62c1 | 644 | dbg("%s - returns %d", __func__, room); |
0f64478c GKH |
645 | return room; |
646 | } | |
647 | ||
95da310e AC |
648 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
649 | const unsigned char *data, int count) | |
0f64478c GKH |
650 | { |
651 | int status; | |
652 | int i; | |
653 | int bytes_sent = 0; | |
654 | int transfer_size; | |
655 | ||
656 | struct moschip_port *mos7720_port; | |
657 | struct usb_serial *serial; | |
658 | struct urb *urb; | |
659 | const unsigned char *current_position = data; | |
660 | ||
441b62c1 | 661 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
662 | |
663 | serial = port->serial; | |
664 | ||
665 | mos7720_port = usb_get_serial_port_data(port); | |
666 | if (mos7720_port == NULL) { | |
667 | dbg("mos7720_port is NULL"); | |
668 | return -ENODEV; | |
669 | } | |
670 | ||
671 | /* try to find a free urb in the list */ | |
672 | urb = NULL; | |
673 | ||
674 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
675 | if (mos7720_port->write_urb_pool[i] && |
676 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { | |
0f64478c | 677 | urb = mos7720_port->write_urb_pool[i]; |
4da1a17d | 678 | dbg("URB:%d", i); |
0f64478c GKH |
679 | break; |
680 | } | |
681 | } | |
682 | ||
683 | if (urb == NULL) { | |
441b62c1 | 684 | dbg("%s - no more free urbs", __func__); |
0f64478c GKH |
685 | goto exit; |
686 | } | |
687 | ||
688 | if (urb->transfer_buffer == NULL) { | |
689 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
690 | GFP_KERNEL); | |
691 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
692 | dev_err(&port->dev, "%s no more kernel memory...\n", |
693 | __func__); | |
0f64478c GKH |
694 | goto exit; |
695 | } | |
696 | } | |
4da1a17d | 697 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
0f64478c GKH |
698 | |
699 | memcpy(urb->transfer_buffer, current_position, transfer_size); | |
441b62c1 | 700 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, |
0f64478c GKH |
701 | urb->transfer_buffer); |
702 | ||
703 | /* fill urb with data and submit */ | |
704 | usb_fill_bulk_urb(urb, serial->dev, | |
705 | usb_sndbulkpipe(serial->dev, | |
4da1a17d | 706 | port->bulk_out_endpointAddress), |
0f64478c GKH |
707 | urb->transfer_buffer, transfer_size, |
708 | mos7720_bulk_out_data_callback, mos7720_port); | |
709 | ||
710 | /* send it down the pipe */ | |
4da1a17d | 711 | status = usb_submit_urb(urb, GFP_ATOMIC); |
0f64478c | 712 | if (status) { |
194343d9 GKH |
713 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
714 | "with status = %d\n", __func__, status); | |
0f64478c GKH |
715 | bytes_sent = status; |
716 | goto exit; | |
717 | } | |
718 | bytes_sent = transfer_size; | |
719 | ||
720 | exit: | |
721 | return bytes_sent; | |
722 | } | |
723 | ||
95da310e | 724 | static void mos7720_throttle(struct tty_struct *tty) |
0f64478c | 725 | { |
95da310e | 726 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 727 | struct moschip_port *mos7720_port; |
0f64478c GKH |
728 | int status; |
729 | ||
441b62c1 | 730 | dbg("%s- port %d\n", __func__, port->number); |
0f64478c GKH |
731 | |
732 | mos7720_port = usb_get_serial_port_data(port); | |
733 | ||
734 | if (mos7720_port == NULL) | |
735 | return; | |
736 | ||
737 | if (!mos7720_port->open) { | |
738 | dbg("port not opened"); | |
739 | return; | |
740 | } | |
741 | ||
441b62c1 | 742 | dbg("%s: Entering ..........", __func__); |
0f64478c | 743 | |
0f64478c GKH |
744 | /* if we are implementing XON/XOFF, send the stop character */ |
745 | if (I_IXOFF(tty)) { | |
746 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e | 747 | status = mos7720_write(tty, port, &stop_char, 1); |
0f64478c GKH |
748 | if (status <= 0) |
749 | return; | |
750 | } | |
751 | ||
752 | /* if we are implementing RTS/CTS, toggle that line */ | |
753 | if (tty->termios->c_cflag & CRTSCTS) { | |
754 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; | |
755 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
756 | port->number - port->serial->minor, | |
757 | UART_MCR, &mos7720_port->shadowMCR); | |
758 | if (status != 0) | |
759 | return; | |
760 | } | |
761 | } | |
762 | ||
95da310e | 763 | static void mos7720_unthrottle(struct tty_struct *tty) |
0f64478c | 764 | { |
95da310e | 765 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 766 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
95da310e | 767 | int status; |
0f64478c GKH |
768 | |
769 | if (mos7720_port == NULL) | |
770 | return; | |
771 | ||
772 | if (!mos7720_port->open) { | |
441b62c1 | 773 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
774 | return; |
775 | } | |
776 | ||
441b62c1 | 777 | dbg("%s: Entering ..........", __func__); |
0f64478c | 778 | |
0f64478c GKH |
779 | /* if we are implementing XON/XOFF, send the start character */ |
780 | if (I_IXOFF(tty)) { | |
781 | unsigned char start_char = START_CHAR(tty); | |
95da310e | 782 | status = mos7720_write(tty, port, &start_char, 1); |
0f64478c GKH |
783 | if (status <= 0) |
784 | return; | |
785 | } | |
786 | ||
787 | /* if we are implementing RTS/CTS, toggle that line */ | |
788 | if (tty->termios->c_cflag & CRTSCTS) { | |
789 | mos7720_port->shadowMCR |= UART_MCR_RTS; | |
790 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
791 | port->number - port->serial->minor, | |
792 | UART_MCR, &mos7720_port->shadowMCR); | |
793 | if (status != 0) | |
794 | return; | |
795 | } | |
796 | } | |
797 | ||
798 | static int set_higher_rates(struct moschip_port *mos7720_port, | |
799 | unsigned int baud) | |
800 | { | |
801 | unsigned char data; | |
802 | struct usb_serial_port *port; | |
803 | struct usb_serial *serial; | |
804 | int port_number; | |
805 | ||
806 | if (mos7720_port == NULL) | |
807 | return -EINVAL; | |
808 | ||
809 | port = mos7720_port->port; | |
810 | serial = port->serial; | |
811 | ||
4da1a17d AC |
812 | /*********************************************** |
813 | * Init Sequence for higher rates | |
814 | ***********************************************/ | |
0f64478c GKH |
815 | dbg("Sending Setting Commands .........."); |
816 | port_number = port->number - port->serial->minor; | |
817 | ||
818 | data = 0x000; | |
819 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
820 | data = 0x000; | |
821 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
822 | data = 0x0CF; | |
823 | send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); | |
824 | data = 0x00b; | |
4da1a17d | 825 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
826 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
827 | data = 0x00b; | |
828 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
829 | ||
830 | data = 0x000; | |
831 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
832 | data = 0x000; | |
833 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
834 | ||
835 | ||
4da1a17d AC |
836 | /*********************************************** |
837 | * Set for higher rates * | |
838 | ***********************************************/ | |
0f64478c GKH |
839 | |
840 | data = baud * 0x10; | |
4da1a17d | 841 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
0f64478c GKH |
842 | |
843 | data = 0x003; | |
844 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
845 | data = 0x003; | |
846 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
847 | ||
848 | data = 0x02b; | |
4da1a17d | 849 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
850 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
851 | data = 0x02b; | |
852 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
853 | ||
4da1a17d AC |
854 | /*********************************************** |
855 | * Set DLL/DLM | |
856 | ***********************************************/ | |
0f64478c GKH |
857 | |
858 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
4da1a17d | 859 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
860 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
861 | ||
862 | data = 0x001; /* DLL */ | |
4da1a17d | 863 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
0f64478c | 864 | data = 0x000; /* DLM */ |
4da1a17d | 865 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
0f64478c GKH |
866 | |
867 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
4da1a17d | 868 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
869 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
870 | ||
871 | return 0; | |
872 | } | |
873 | ||
874 | /* baud rate information */ | |
4da1a17d | 875 | struct divisor_table_entry { |
0f64478c GKH |
876 | __u32 baudrate; |
877 | __u16 divisor; | |
878 | }; | |
879 | ||
880 | /* Define table of divisors for moschip 7720 hardware * | |
881 | * These assume a 3.6864MHz crystal, the standard /16, and * | |
882 | * MCR.7 = 0. */ | |
883 | static struct divisor_table_entry divisor_table[] = { | |
884 | { 50, 2304}, | |
885 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ | |
886 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ | |
887 | { 150, 768}, | |
888 | { 300, 384}, | |
889 | { 600, 192}, | |
890 | { 1200, 96}, | |
891 | { 1800, 64}, | |
892 | { 2400, 48}, | |
893 | { 4800, 24}, | |
894 | { 7200, 16}, | |
895 | { 9600, 12}, | |
896 | { 19200, 6}, | |
897 | { 38400, 3}, | |
898 | { 57600, 2}, | |
899 | { 115200, 1}, | |
900 | }; | |
901 | ||
902 | /***************************************************************************** | |
903 | * calc_baud_rate_divisor | |
904 | * this function calculates the proper baud rate divisor for the specified | |
905 | * baud rate. | |
906 | *****************************************************************************/ | |
907 | static int calc_baud_rate_divisor(int baudrate, int *divisor) | |
908 | { | |
909 | int i; | |
910 | __u16 custom; | |
911 | __u16 round1; | |
912 | __u16 round; | |
913 | ||
914 | ||
441b62c1 | 915 | dbg("%s - %d", __func__, baudrate); |
0f64478c GKH |
916 | |
917 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { | |
918 | if (divisor_table[i].baudrate == baudrate) { | |
919 | *divisor = divisor_table[i].divisor; | |
920 | return 0; | |
921 | } | |
922 | } | |
923 | ||
4da1a17d AC |
924 | /* After trying for all the standard baud rates * |
925 | * Try calculating the divisor for this baud rate */ | |
0f64478c GKH |
926 | if (baudrate > 75 && baudrate < 230400) { |
927 | /* get the divisor */ | |
928 | custom = (__u16)(230400L / baudrate); | |
929 | ||
930 | /* Check for round off */ | |
931 | round1 = (__u16)(2304000L / baudrate); | |
932 | round = (__u16)(round1 - (custom * 10)); | |
933 | if (round > 4) | |
934 | custom++; | |
935 | *divisor = custom; | |
936 | ||
4da1a17d | 937 | dbg("Baud %d = %d", baudrate, custom); |
0f64478c GKH |
938 | return 0; |
939 | } | |
940 | ||
941 | dbg("Baud calculation Failed..."); | |
942 | return -EINVAL; | |
943 | } | |
944 | ||
945 | /* | |
946 | * send_cmd_write_baud_rate | |
947 | * this function sends the proper command to change the baud rate of the | |
948 | * specified port. | |
949 | */ | |
950 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, | |
951 | int baudrate) | |
952 | { | |
953 | struct usb_serial_port *port; | |
954 | struct usb_serial *serial; | |
955 | int divisor; | |
956 | int status; | |
957 | unsigned char data; | |
958 | unsigned char number; | |
959 | ||
960 | if (mos7720_port == NULL) | |
961 | return -1; | |
962 | ||
963 | port = mos7720_port->port; | |
964 | serial = port->serial; | |
965 | ||
441b62c1 | 966 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
967 | |
968 | number = port->number - port->serial->minor; | |
441b62c1 | 969 | dbg("%s - port = %d, baud = %d", __func__, port->number, baudrate); |
0f64478c | 970 | |
4da1a17d | 971 | /* Calculate the Divisor */ |
0f64478c GKH |
972 | status = calc_baud_rate_divisor(baudrate, &divisor); |
973 | if (status) { | |
194343d9 | 974 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
0f64478c GKH |
975 | return status; |
976 | } | |
977 | ||
4da1a17d AC |
978 | /* Enable access to divisor latch */ |
979 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
980 | mos7720_port->shadowLCR = data; | |
981 | send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); | |
0f64478c GKH |
982 | |
983 | /* Write the divisor */ | |
984 | data = ((unsigned char)(divisor & 0xff)); | |
4da1a17d | 985 | send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); |
0f64478c GKH |
986 | |
987 | data = ((unsigned char)((divisor & 0xff00) >> 8)); | |
4da1a17d | 988 | send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); |
0f64478c | 989 | |
4da1a17d AC |
990 | /* Disable access to divisor latch */ |
991 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
992 | mos7720_port->shadowLCR = data; | |
993 | send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); | |
0f64478c GKH |
994 | |
995 | return status; | |
996 | } | |
997 | ||
998 | /* | |
999 | * change_port_settings | |
1000 | * This routine is called to set the UART on the device to match | |
1001 | * the specified new settings. | |
1002 | */ | |
95da310e AC |
1003 | static void change_port_settings(struct tty_struct *tty, |
1004 | struct moschip_port *mos7720_port, | |
606d099c | 1005 | struct ktermios *old_termios) |
0f64478c GKH |
1006 | { |
1007 | struct usb_serial_port *port; | |
1008 | struct usb_serial *serial; | |
0f64478c GKH |
1009 | int baud; |
1010 | unsigned cflag; | |
1011 | unsigned iflag; | |
1012 | __u8 mask = 0xff; | |
1013 | __u8 lData; | |
1014 | __u8 lParity; | |
1015 | __u8 lStop; | |
1016 | int status; | |
1017 | int port_number; | |
1018 | char data; | |
1019 | ||
1020 | if (mos7720_port == NULL) | |
1021 | return ; | |
1022 | ||
1023 | port = mos7720_port->port; | |
1024 | serial = port->serial; | |
1025 | port_number = port->number - port->serial->minor; | |
1026 | ||
441b62c1 | 1027 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1028 | |
1029 | if (!mos7720_port->open) { | |
441b62c1 | 1030 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1031 | return; |
1032 | } | |
1033 | ||
441b62c1 | 1034 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1035 | |
1036 | lData = UART_LCR_WLEN8; | |
1037 | lStop = 0x00; /* 1 stop bit */ | |
1038 | lParity = 0x00; /* No parity */ | |
1039 | ||
1040 | cflag = tty->termios->c_cflag; | |
1041 | iflag = tty->termios->c_iflag; | |
1042 | ||
1043 | /* Change the number of bits */ | |
1044 | switch (cflag & CSIZE) { | |
1045 | case CS5: | |
1046 | lData = UART_LCR_WLEN5; | |
1047 | mask = 0x1f; | |
1048 | break; | |
1049 | ||
1050 | case CS6: | |
1051 | lData = UART_LCR_WLEN6; | |
1052 | mask = 0x3f; | |
1053 | break; | |
1054 | ||
1055 | case CS7: | |
1056 | lData = UART_LCR_WLEN7; | |
1057 | mask = 0x7f; | |
1058 | break; | |
1059 | default: | |
1060 | case CS8: | |
1061 | lData = UART_LCR_WLEN8; | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | /* Change the Parity bit */ | |
1066 | if (cflag & PARENB) { | |
1067 | if (cflag & PARODD) { | |
1068 | lParity = UART_LCR_PARITY; | |
441b62c1 | 1069 | dbg("%s - parity = odd", __func__); |
0f64478c GKH |
1070 | } else { |
1071 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); | |
441b62c1 | 1072 | dbg("%s - parity = even", __func__); |
0f64478c GKH |
1073 | } |
1074 | ||
1075 | } else { | |
441b62c1 | 1076 | dbg("%s - parity = none", __func__); |
0f64478c GKH |
1077 | } |
1078 | ||
1079 | if (cflag & CMSPAR) | |
1080 | lParity = lParity | 0x20; | |
1081 | ||
1082 | /* Change the Stop bit */ | |
1083 | if (cflag & CSTOPB) { | |
1084 | lStop = UART_LCR_STOP; | |
441b62c1 | 1085 | dbg("%s - stop bits = 2", __func__); |
0f64478c GKH |
1086 | } else { |
1087 | lStop = 0x00; | |
441b62c1 | 1088 | dbg("%s - stop bits = 1", __func__); |
0f64478c GKH |
1089 | } |
1090 | ||
1091 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
1092 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
1093 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
1094 | ||
1095 | /* Update the LCR with the correct value */ | |
4da1a17d AC |
1096 | mos7720_port->shadowLCR &= |
1097 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
0f64478c GKH |
1098 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
1099 | ||
1100 | ||
1101 | /* Disable Interrupts */ | |
1102 | data = 0x00; | |
4da1a17d AC |
1103 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
1104 | UART_IER, &data); | |
0f64478c GKH |
1105 | |
1106 | data = 0x00; | |
4da1a17d | 1107 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1108 | |
1109 | data = 0xcf; | |
4da1a17d | 1110 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1111 | |
1112 | /* Send the updated LCR value to the mos7720 */ | |
1113 | data = mos7720_port->shadowLCR; | |
4da1a17d | 1114 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); |
0f64478c | 1115 | |
4da1a17d AC |
1116 | data = 0x00b; |
1117 | mos7720_port->shadowMCR = data; | |
1118 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
1119 | data = 0x00b; | |
1120 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
0f64478c GKH |
1121 | |
1122 | /* set up the MCR register and send it to the mos7720 */ | |
1123 | mos7720_port->shadowMCR = UART_MCR_OUT2; | |
1124 | if (cflag & CBAUD) | |
1125 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); | |
1126 | ||
1127 | if (cflag & CRTSCTS) { | |
1128 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); | |
4da1a17d AC |
1129 | /* To set hardware flow control to the specified * |
1130 | * serial port, in SP1/2_CONTROL_REG */ | |
0f64478c GKH |
1131 | if (port->number) { |
1132 | data = 0x001; | |
1133 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1134 | 0x08, &data); | |
1135 | } else { | |
1136 | data = 0x002; | |
1137 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1138 | 0x08, &data); | |
1139 | } | |
1140 | } else { | |
1141 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); | |
1142 | } | |
1143 | ||
1144 | data = mos7720_port->shadowMCR; | |
1145 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); | |
1146 | ||
1147 | /* Determine divisor based on baud rate */ | |
1148 | baud = tty_get_baud_rate(tty); | |
1149 | if (!baud) { | |
1150 | /* pick a default, any default... */ | |
1151 | dbg("Picked default baud..."); | |
1152 | baud = 9600; | |
1153 | } | |
1154 | ||
1155 | if (baud >= 230400) { | |
1156 | set_higher_rates(mos7720_port, baud); | |
1157 | /* Enable Interrupts */ | |
1158 | data = 0x0c; | |
1159 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1160 | return; | |
1161 | } | |
1162 | ||
441b62c1 | 1163 | dbg("%s - baud rate = %d", __func__, baud); |
0f64478c | 1164 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
65d063ab AC |
1165 | /* FIXME: needs to write actual resulting baud back not just |
1166 | blindly do so */ | |
1167 | if (cflag & CBAUD) | |
1168 | tty_encode_baud_rate(tty, baud, baud); | |
0f64478c GKH |
1169 | /* Enable Interrupts */ |
1170 | data = 0x0c; | |
1171 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1172 | ||
1173 | if (port->read_urb->status != -EINPROGRESS) { | |
1174 | port->read_urb->dev = serial->dev; | |
1175 | ||
1176 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1177 | if (status) | |
1178 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1179 | status); | |
1180 | } | |
1181 | return; | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * mos7720_set_termios | |
1186 | * this function is called by the tty driver when it wants to change the | |
1187 | * termios structure. | |
1188 | */ | |
95da310e AC |
1189 | static void mos7720_set_termios(struct tty_struct *tty, |
1190 | struct usb_serial_port *port, struct ktermios *old_termios) | |
0f64478c GKH |
1191 | { |
1192 | int status; | |
1193 | unsigned int cflag; | |
1194 | struct usb_serial *serial; | |
1195 | struct moschip_port *mos7720_port; | |
0f64478c GKH |
1196 | |
1197 | serial = port->serial; | |
1198 | ||
1199 | mos7720_port = usb_get_serial_port_data(port); | |
1200 | ||
1201 | if (mos7720_port == NULL) | |
1202 | return; | |
1203 | ||
0f64478c | 1204 | if (!mos7720_port->open) { |
441b62c1 | 1205 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1206 | return; |
1207 | } | |
1208 | ||
4da1a17d | 1209 | dbg("%s\n", "setting termios - ASPIRE"); |
0f64478c GKH |
1210 | |
1211 | cflag = tty->termios->c_cflag; | |
1212 | ||
441b62c1 | 1213 | dbg("%s - cflag %08x iflag %08x", __func__, |
0f64478c GKH |
1214 | tty->termios->c_cflag, |
1215 | RELEVANT_IFLAG(tty->termios->c_iflag)); | |
1216 | ||
441b62c1 | 1217 | dbg("%s - old cflag %08x old iflag %08x", __func__, |
65d063ab AC |
1218 | old_termios->c_cflag, |
1219 | RELEVANT_IFLAG(old_termios->c_iflag)); | |
0f64478c | 1220 | |
441b62c1 | 1221 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1222 | |
1223 | /* change the port settings to the new ones specified */ | |
95da310e | 1224 | change_port_settings(tty, mos7720_port, old_termios); |
0f64478c | 1225 | |
4da1a17d AC |
1226 | if (!port->read_urb) { |
1227 | dbg("%s", "URB KILLED !!!!!\n"); | |
0f64478c GKH |
1228 | return; |
1229 | } | |
1230 | ||
4da1a17d | 1231 | if (port->read_urb->status != -EINPROGRESS) { |
0f64478c GKH |
1232 | port->read_urb->dev = serial->dev; |
1233 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1234 | if (status) | |
1235 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1236 | status); | |
1237 | } | |
1238 | return; | |
1239 | } | |
1240 | ||
1241 | /* | |
1242 | * get_lsr_info - get line status register info | |
1243 | * | |
1244 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1245 | * is emptied. On bus types like RS485, the transmitter must | |
1246 | * release the bus after transmitting. This must be done when | |
1247 | * the transmit shift register is empty, not be done when the | |
1248 | * transmit holding register is empty. This functionality | |
1249 | * allows an RS485 driver to be written in user space. | |
1250 | */ | |
4da1a17d AC |
1251 | static int get_lsr_info(struct tty_struct *tty, |
1252 | struct moschip_port *mos7720_port, unsigned int __user *value) | |
0f64478c GKH |
1253 | { |
1254 | int count; | |
1255 | unsigned int result = 0; | |
1256 | ||
95da310e | 1257 | count = mos7720_chars_in_buffer(tty); |
0f64478c | 1258 | if (count == 0) { |
441b62c1 | 1259 | dbg("%s -- Empty", __func__); |
0f64478c GKH |
1260 | result = TIOCSER_TEMT; |
1261 | } | |
1262 | ||
1263 | if (copy_to_user(value, &result, sizeof(int))) | |
1264 | return -EFAULT; | |
1265 | return 0; | |
1266 | } | |
1267 | ||
0f64478c GKH |
1268 | static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, |
1269 | unsigned int __user *value) | |
1270 | { | |
1271 | unsigned int mcr ; | |
1272 | unsigned int arg; | |
1273 | unsigned char data; | |
1274 | ||
1275 | struct usb_serial_port *port; | |
1276 | ||
1277 | if (mos7720_port == NULL) | |
1278 | return -1; | |
1279 | ||
4da1a17d | 1280 | port = (struct usb_serial_port *)mos7720_port->port; |
0f64478c GKH |
1281 | mcr = mos7720_port->shadowMCR; |
1282 | ||
1283 | if (copy_from_user(&arg, value, sizeof(int))) | |
1284 | return -EFAULT; | |
1285 | ||
1286 | switch (cmd) { | |
1287 | case TIOCMBIS: | |
1288 | if (arg & TIOCM_RTS) | |
1289 | mcr |= UART_MCR_RTS; | |
1290 | if (arg & TIOCM_DTR) | |
1291 | mcr |= UART_MCR_RTS; | |
1292 | if (arg & TIOCM_LOOP) | |
1293 | mcr |= UART_MCR_LOOP; | |
1294 | break; | |
1295 | ||
1296 | case TIOCMBIC: | |
1297 | if (arg & TIOCM_RTS) | |
1298 | mcr &= ~UART_MCR_RTS; | |
1299 | if (arg & TIOCM_DTR) | |
1300 | mcr &= ~UART_MCR_RTS; | |
1301 | if (arg & TIOCM_LOOP) | |
1302 | mcr &= ~UART_MCR_LOOP; | |
1303 | break; | |
1304 | ||
1305 | case TIOCMSET: | |
1306 | /* turn off the RTS and DTR and LOOPBACK | |
1307 | * and then only turn on what was asked to */ | |
1308 | mcr &= ~(UART_MCR_RTS | UART_MCR_DTR | UART_MCR_LOOP); | |
1309 | mcr |= ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0); | |
1310 | mcr |= ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0); | |
1311 | mcr |= ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0); | |
1312 | break; | |
1313 | } | |
1314 | ||
1315 | mos7720_port->shadowMCR = mcr; | |
1316 | ||
1317 | data = mos7720_port->shadowMCR; | |
1318 | send_mos_cmd(port->serial, MOS_WRITE, | |
1319 | port->number - port->serial->minor, UART_MCR, &data); | |
1320 | ||
1321 | return 0; | |
1322 | } | |
1323 | ||
1324 | static int get_modem_info(struct moschip_port *mos7720_port, | |
1325 | unsigned int __user *value) | |
1326 | { | |
1327 | unsigned int result = 0; | |
1328 | unsigned int msr = mos7720_port->shadowMSR; | |
1329 | unsigned int mcr = mos7720_port->shadowMCR; | |
1330 | ||
1331 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1332 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1333 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1334 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1335 | | ((msr & UART_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1336 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1337 | ||
1338 | ||
441b62c1 | 1339 | dbg("%s -- %x", __func__, result); |
0f64478c GKH |
1340 | |
1341 | if (copy_to_user(value, &result, sizeof(int))) | |
1342 | return -EFAULT; | |
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | static int get_serial_info(struct moschip_port *mos7720_port, | |
1347 | struct serial_struct __user *retinfo) | |
1348 | { | |
1349 | struct serial_struct tmp; | |
1350 | ||
1351 | if (!retinfo) | |
1352 | return -EFAULT; | |
1353 | ||
1354 | memset(&tmp, 0, sizeof(tmp)); | |
1355 | ||
1356 | tmp.type = PORT_16550A; | |
1357 | tmp.line = mos7720_port->port->serial->minor; | |
1358 | tmp.port = mos7720_port->port->number; | |
1359 | tmp.irq = 0; | |
1360 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
4da1a17d | 1361 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
0f64478c GKH |
1362 | tmp.baud_base = 9600; |
1363 | tmp.close_delay = 5*HZ; | |
1364 | tmp.closing_wait = 30*HZ; | |
1365 | ||
1366 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1367 | return -EFAULT; | |
1368 | return 0; | |
1369 | } | |
1370 | ||
95da310e | 1371 | static int mos7720_ioctl(struct tty_struct *tty, struct file *file, |
0f64478c GKH |
1372 | unsigned int cmd, unsigned long arg) |
1373 | { | |
95da310e | 1374 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1375 | struct moschip_port *mos7720_port; |
1376 | struct async_icount cnow; | |
1377 | struct async_icount cprev; | |
1378 | struct serial_icounter_struct icount; | |
1379 | ||
1380 | mos7720_port = usb_get_serial_port_data(port); | |
1381 | if (mos7720_port == NULL) | |
1382 | return -ENODEV; | |
1383 | ||
441b62c1 | 1384 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
0f64478c GKH |
1385 | |
1386 | switch (cmd) { | |
0f64478c | 1387 | case TIOCSERGETLSR: |
441b62c1 | 1388 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
4da1a17d AC |
1389 | return get_lsr_info(tty, mos7720_port, |
1390 | (unsigned int __user *)arg); | |
0f64478c GKH |
1391 | return 0; |
1392 | ||
95da310e | 1393 | /* FIXME: These should be using the mode methods */ |
0f64478c GKH |
1394 | case TIOCMBIS: |
1395 | case TIOCMBIC: | |
1396 | case TIOCMSET: | |
4da1a17d AC |
1397 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", |
1398 | __func__, port->number); | |
0f64478c GKH |
1399 | return set_modem_info(mos7720_port, cmd, |
1400 | (unsigned int __user *)arg); | |
1401 | ||
1402 | case TIOCMGET: | |
441b62c1 | 1403 | dbg("%s (%d) TIOCMGET", __func__, port->number); |
0f64478c GKH |
1404 | return get_modem_info(mos7720_port, |
1405 | (unsigned int __user *)arg); | |
1406 | ||
1407 | case TIOCGSERIAL: | |
441b62c1 | 1408 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
0f64478c GKH |
1409 | return get_serial_info(mos7720_port, |
1410 | (struct serial_struct __user *)arg); | |
1411 | ||
0f64478c | 1412 | case TIOCMIWAIT: |
441b62c1 | 1413 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
0f64478c GKH |
1414 | cprev = mos7720_port->icount; |
1415 | while (1) { | |
1416 | if (signal_pending(current)) | |
1417 | return -ERESTARTSYS; | |
1418 | cnow = mos7720_port->icount; | |
1419 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1420 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1421 | return -EIO; /* no change => error */ | |
1422 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1423 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1424 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4da1a17d | 1425 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
0f64478c GKH |
1426 | return 0; |
1427 | } | |
1428 | cprev = cnow; | |
1429 | } | |
1430 | /* NOTREACHED */ | |
1431 | break; | |
1432 | ||
1433 | case TIOCGICOUNT: | |
1434 | cnow = mos7720_port->icount; | |
1435 | icount.cts = cnow.cts; | |
1436 | icount.dsr = cnow.dsr; | |
1437 | icount.rng = cnow.rng; | |
1438 | icount.dcd = cnow.dcd; | |
1439 | icount.rx = cnow.rx; | |
1440 | icount.tx = cnow.tx; | |
1441 | icount.frame = cnow.frame; | |
1442 | icount.overrun = cnow.overrun; | |
1443 | icount.parity = cnow.parity; | |
1444 | icount.brk = cnow.brk; | |
1445 | icount.buf_overrun = cnow.buf_overrun; | |
1446 | ||
441b62c1 | 1447 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
4da1a17d | 1448 | port->number, icount.rx, icount.tx); |
0f64478c GKH |
1449 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
1450 | return -EFAULT; | |
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | return -ENOIOCTLCMD; | |
1455 | } | |
1456 | ||
1457 | static int mos7720_startup(struct usb_serial *serial) | |
1458 | { | |
1459 | struct moschip_serial *mos7720_serial; | |
1460 | struct moschip_port *mos7720_port; | |
1461 | struct usb_device *dev; | |
1462 | int i; | |
1463 | char data; | |
1464 | ||
441b62c1 | 1465 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1466 | |
1467 | if (!serial) { | |
1468 | dbg("Invalid Handler"); | |
1469 | return -ENODEV; | |
1470 | } | |
1471 | ||
1472 | dev = serial->dev; | |
1473 | ||
1474 | /* create our private serial structure */ | |
1475 | mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); | |
1476 | if (mos7720_serial == NULL) { | |
194343d9 | 1477 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1478 | return -ENOMEM; |
1479 | } | |
1480 | ||
1481 | usb_set_serial_data(serial, mos7720_serial); | |
1482 | ||
1483 | /* we set up the pointers to the endpoints in the mos7720_open * | |
1484 | * function, as the structures aren't created yet. */ | |
1485 | ||
1486 | /* set up port private structures */ | |
1487 | for (i = 0; i < serial->num_ports; ++i) { | |
1488 | mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
1489 | if (mos7720_port == NULL) { | |
194343d9 | 1490 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1491 | usb_set_serial_data(serial, NULL); |
1492 | kfree(mos7720_serial); | |
1493 | return -ENOMEM; | |
1494 | } | |
1495 | ||
1496 | /* Initialize all port interrupt end point to port 0 int | |
1497 | * endpoint. Our device has only one interrupt endpoint | |
1498 | * comman to all ports */ | |
4da1a17d AC |
1499 | serial->port[i]->interrupt_in_endpointAddress = |
1500 | serial->port[0]->interrupt_in_endpointAddress; | |
0f64478c GKH |
1501 | |
1502 | mos7720_port->port = serial->port[i]; | |
1503 | usb_set_serial_port_data(serial->port[i], mos7720_port); | |
1504 | ||
1505 | dbg("port number is %d", serial->port[i]->number); | |
1506 | dbg("serial number is %d", serial->minor); | |
1507 | } | |
1508 | ||
1509 | ||
1510 | /* setting configuration feature to one */ | |
1511 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
4da1a17d | 1512 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); |
0f64478c | 1513 | |
4da1a17d AC |
1514 | /* LSR For Port 1 */ |
1515 | send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); | |
1516 | dbg("LSR:%x", data); | |
0f64478c | 1517 | |
4da1a17d AC |
1518 | /* LSR For Port 2 */ |
1519 | send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); | |
1520 | dbg("LSR:%x", data); | |
0f64478c GKH |
1521 | |
1522 | return 0; | |
1523 | } | |
1524 | ||
1525 | static void mos7720_shutdown(struct usb_serial *serial) | |
1526 | { | |
1527 | int i; | |
1528 | ||
1529 | /* free private structure allocated for serial port */ | |
4da1a17d | 1530 | for (i = 0; i < serial->num_ports; ++i) { |
0f64478c GKH |
1531 | kfree(usb_get_serial_port_data(serial->port[i])); |
1532 | usb_set_serial_port_data(serial->port[i], NULL); | |
1533 | } | |
1534 | ||
1535 | /* free private structure allocated for serial device */ | |
1536 | kfree(usb_get_serial_data(serial)); | |
1537 | usb_set_serial_data(serial, NULL); | |
1538 | } | |
1539 | ||
d9b1b787 JH |
1540 | static struct usb_driver usb_driver = { |
1541 | .name = "moschip7720", | |
1542 | .probe = usb_serial_probe, | |
1543 | .disconnect = usb_serial_disconnect, | |
1544 | .id_table = moschip_port_id_table, | |
1545 | .no_dynamic_id = 1, | |
1546 | }; | |
1547 | ||
0f64478c GKH |
1548 | static struct usb_serial_driver moschip7720_2port_driver = { |
1549 | .driver = { | |
1550 | .owner = THIS_MODULE, | |
1551 | .name = "moschip7720", | |
1552 | }, | |
1553 | .description = "Moschip 2 port adapter", | |
d9b1b787 | 1554 | .usb_driver = &usb_driver, |
0f64478c | 1555 | .id_table = moschip_port_id_table, |
0f64478c GKH |
1556 | .num_ports = 2, |
1557 | .open = mos7720_open, | |
1558 | .close = mos7720_close, | |
1559 | .throttle = mos7720_throttle, | |
1560 | .unthrottle = mos7720_unthrottle, | |
1561 | .attach = mos7720_startup, | |
1562 | .shutdown = mos7720_shutdown, | |
1563 | .ioctl = mos7720_ioctl, | |
1564 | .set_termios = mos7720_set_termios, | |
1565 | .write = mos7720_write, | |
1566 | .write_room = mos7720_write_room, | |
1567 | .chars_in_buffer = mos7720_chars_in_buffer, | |
1568 | .break_ctl = mos7720_break, | |
1569 | .read_bulk_callback = mos7720_bulk_in_callback, | |
e8e30c76 | 1570 | .read_int_callback = mos7720_interrupt_callback, |
0f64478c GKH |
1571 | }; |
1572 | ||
0f64478c GKH |
1573 | static int __init moschip7720_init(void) |
1574 | { | |
1575 | int retval; | |
1576 | ||
441b62c1 | 1577 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1578 | |
1579 | /* Register with the usb serial */ | |
1580 | retval = usb_serial_register(&moschip7720_2port_driver); | |
1581 | if (retval) | |
1582 | goto failed_port_device_register; | |
1583 | ||
c197a8db GKH |
1584 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1585 | DRIVER_DESC "\n"); | |
0f64478c GKH |
1586 | |
1587 | /* Register with the usb */ | |
1588 | retval = usb_register(&usb_driver); | |
1589 | if (retval) | |
1590 | goto failed_usb_register; | |
1591 | ||
1592 | return 0; | |
1593 | ||
1594 | failed_usb_register: | |
1595 | usb_serial_deregister(&moschip7720_2port_driver); | |
1596 | ||
1597 | failed_port_device_register: | |
1598 | return retval; | |
1599 | } | |
1600 | ||
1601 | static void __exit moschip7720_exit(void) | |
1602 | { | |
1603 | usb_deregister(&usb_driver); | |
1604 | usb_serial_deregister(&moschip7720_2port_driver); | |
1605 | } | |
1606 | ||
1607 | module_init(moschip7720_init); | |
1608 | module_exit(moschip7720_exit); | |
1609 | ||
1610 | /* Module information */ | |
4da1a17d AC |
1611 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1612 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0f64478c GKH |
1613 | MODULE_LICENSE("GPL"); |
1614 | ||
1615 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1616 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |