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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 | /* force low_latency on so that our tty_push actually forces * |
450 | * the data through,otherwise it is scheduled, and with * | |
451 | * high data rates (like with OHCI) data can get lost. */ | |
452 | ||
95da310e AC |
453 | if (tty) |
454 | tty->low_latency = 1; | |
0f64478c GKH |
455 | |
456 | /* see if we've set up our endpoint info yet * | |
457 | * (can't set it up in mos7720_startup as the * | |
458 | * structures were not set up at that time.) */ | |
459 | if (!mos7720_serial->interrupt_started) { | |
460 | dbg("Interrupt buffer NULL !!!"); | |
461 | ||
462 | /* not set up yet, so do it now */ | |
463 | mos7720_serial->interrupt_started = 1; | |
464 | ||
465 | dbg("To Submit URB !!!"); | |
466 | ||
467 | /* set up our interrupt urb */ | |
468 | usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, | |
4da1a17d AC |
469 | usb_rcvintpipe(serial->dev, |
470 | port->interrupt_in_endpointAddress), | |
471 | port0->interrupt_in_buffer, | |
472 | port0->interrupt_in_urb->transfer_buffer_length, | |
473 | mos7720_interrupt_callback, mos7720_port, | |
474 | port0->interrupt_in_urb->interval); | |
0f64478c GKH |
475 | |
476 | /* start interrupt read for this mos7720 this interrupt * | |
4da1a17d | 477 | * will continue as long as the mos7720 is connected */ |
0f64478c GKH |
478 | dbg("Submit URB over !!!"); |
479 | response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); | |
480 | if (response) | |
481 | dev_err(&port->dev, | |
898eb71c | 482 | "%s - Error %d submitting control urb\n", |
441b62c1 | 483 | __func__, response); |
0f64478c GKH |
484 | } |
485 | ||
486 | /* set up our bulk in urb */ | |
487 | usb_fill_bulk_urb(port->read_urb, serial->dev, | |
488 | usb_rcvbulkpipe(serial->dev, | |
4da1a17d | 489 | port->bulk_in_endpointAddress), |
0f64478c GKH |
490 | port->bulk_in_buffer, |
491 | port->read_urb->transfer_buffer_length, | |
492 | mos7720_bulk_in_callback, mos7720_port); | |
493 | response = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
494 | if (response) | |
4da1a17d AC |
495 | dev_err(&port->dev, "%s - Error %d submitting read urb\n", |
496 | __func__, response); | |
0f64478c GKH |
497 | |
498 | /* initialize our icount structure */ | |
499 | memset(&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount)); | |
500 | ||
501 | /* initialize our port settings */ | |
502 | mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ | |
503 | ||
504 | /* send a open port command */ | |
505 | mos7720_port->open = 1; | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | /* | |
511 | * mos7720_chars_in_buffer | |
512 | * this function is called by the tty driver when it wants to know how many | |
513 | * bytes of data we currently have outstanding in the port (data that has | |
514 | * been written, but hasn't made it out the port yet) | |
515 | * If successful, we return the number of bytes left to be written in the | |
516 | * system, | |
517 | * Otherwise we return a negative error number. | |
518 | */ | |
95da310e | 519 | static int mos7720_chars_in_buffer(struct tty_struct *tty) |
0f64478c | 520 | { |
95da310e | 521 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
522 | int i; |
523 | int chars = 0; | |
524 | struct moschip_port *mos7720_port; | |
525 | ||
441b62c1 | 526 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
527 | |
528 | mos7720_port = usb_get_serial_port_data(port); | |
529 | if (mos7720_port == NULL) { | |
441b62c1 | 530 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
531 | return -ENODEV; |
532 | } | |
533 | ||
534 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
535 | if (mos7720_port->write_urb_pool[i] && |
536 | mos7720_port->write_urb_pool[i]->status == -EINPROGRESS) | |
0f64478c GKH |
537 | chars += URB_TRANSFER_BUFFER_SIZE; |
538 | } | |
441b62c1 | 539 | dbg("%s - returns %d", __func__, chars); |
0f64478c GKH |
540 | return chars; |
541 | } | |
542 | ||
95da310e AC |
543 | static void mos7720_close(struct tty_struct *tty, |
544 | struct usb_serial_port *port, struct file *filp) | |
0f64478c GKH |
545 | { |
546 | struct usb_serial *serial; | |
547 | struct moschip_port *mos7720_port; | |
548 | char data; | |
549 | int j; | |
550 | ||
551 | dbg("mos7720_close:entering..."); | |
552 | ||
553 | serial = port->serial; | |
554 | ||
555 | mos7720_port = usb_get_serial_port_data(port); | |
556 | if (mos7720_port == NULL) | |
557 | return; | |
558 | ||
559 | for (j = 0; j < NUM_URBS; ++j) | |
560 | usb_kill_urb(mos7720_port->write_urb_pool[j]); | |
561 | ||
562 | /* Freeing Write URBs */ | |
563 | for (j = 0; j < NUM_URBS; ++j) { | |
564 | if (mos7720_port->write_urb_pool[j]) { | |
565 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); | |
566 | usb_free_urb(mos7720_port->write_urb_pool[j]); | |
567 | } | |
568 | } | |
569 | ||
570 | /* While closing port, shutdown all bulk read, write * | |
a1cd7e99 ON |
571 | * and interrupt read if they exists, otherwise nop */ |
572 | dbg("Shutdown bulk write"); | |
573 | usb_kill_urb(port->write_urb); | |
574 | dbg("Shutdown bulk read"); | |
575 | usb_kill_urb(port->read_urb); | |
576 | ||
577 | mutex_lock(&serial->disc_mutex); | |
578 | /* these commands must not be issued if the device has | |
579 | * been disconnected */ | |
580 | if (!serial->disconnected) { | |
581 | data = 0x00; | |
4da1a17d AC |
582 | send_mos_cmd(serial, MOS_WRITE, |
583 | port->number - port->serial->minor, 0x04, &data); | |
a1cd7e99 ON |
584 | |
585 | data = 0x00; | |
4da1a17d AC |
586 | send_mos_cmd(serial, MOS_WRITE, |
587 | port->number - port->serial->minor, 0x01, &data); | |
0f64478c | 588 | } |
a1cd7e99 | 589 | mutex_unlock(&serial->disc_mutex); |
0f64478c GKH |
590 | mos7720_port->open = 0; |
591 | ||
441b62c1 | 592 | dbg("Leaving %s", __func__); |
0f64478c GKH |
593 | } |
594 | ||
95da310e | 595 | static void mos7720_break(struct tty_struct *tty, int break_state) |
0f64478c | 596 | { |
95da310e | 597 | struct usb_serial_port *port = tty->driver_data; |
4da1a17d | 598 | unsigned char data; |
0f64478c GKH |
599 | struct usb_serial *serial; |
600 | struct moschip_port *mos7720_port; | |
601 | ||
441b62c1 | 602 | dbg("Entering %s", __func__); |
0f64478c GKH |
603 | |
604 | serial = port->serial; | |
605 | ||
606 | mos7720_port = usb_get_serial_port_data(port); | |
607 | if (mos7720_port == NULL) | |
608 | return; | |
609 | ||
610 | if (break_state == -1) | |
611 | data = mos7720_port->shadowLCR | UART_LCR_SBC; | |
612 | else | |
613 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; | |
614 | ||
615 | mos7720_port->shadowLCR = data; | |
616 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, | |
617 | 0x03, &data); | |
618 | ||
619 | return; | |
620 | } | |
621 | ||
622 | /* | |
623 | * mos7720_write_room | |
624 | * this function is called by the tty driver when it wants to know how many | |
625 | * bytes of data we can accept for a specific port. | |
626 | * If successful, we return the amount of room that we have for this port | |
627 | * Otherwise we return a negative error number. | |
628 | */ | |
95da310e | 629 | static int mos7720_write_room(struct tty_struct *tty) |
0f64478c | 630 | { |
95da310e | 631 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
632 | struct moschip_port *mos7720_port; |
633 | int room = 0; | |
634 | int i; | |
635 | ||
441b62c1 | 636 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
637 | |
638 | mos7720_port = usb_get_serial_port_data(port); | |
639 | if (mos7720_port == NULL) { | |
441b62c1 | 640 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
641 | return -ENODEV; |
642 | } | |
643 | ||
a5b6f60c | 644 | /* FIXME: Locking */ |
0f64478c | 645 | for (i = 0; i < NUM_URBS; ++i) { |
4da1a17d AC |
646 | if (mos7720_port->write_urb_pool[i] && |
647 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) | |
0f64478c GKH |
648 | room += URB_TRANSFER_BUFFER_SIZE; |
649 | } | |
650 | ||
441b62c1 | 651 | dbg("%s - returns %d", __func__, room); |
0f64478c GKH |
652 | return room; |
653 | } | |
654 | ||
95da310e AC |
655 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
656 | const unsigned char *data, int count) | |
0f64478c GKH |
657 | { |
658 | int status; | |
659 | int i; | |
660 | int bytes_sent = 0; | |
661 | int transfer_size; | |
662 | ||
663 | struct moschip_port *mos7720_port; | |
664 | struct usb_serial *serial; | |
665 | struct urb *urb; | |
666 | const unsigned char *current_position = data; | |
667 | ||
441b62c1 | 668 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
669 | |
670 | serial = port->serial; | |
671 | ||
672 | mos7720_port = usb_get_serial_port_data(port); | |
673 | if (mos7720_port == NULL) { | |
674 | dbg("mos7720_port is NULL"); | |
675 | return -ENODEV; | |
676 | } | |
677 | ||
678 | /* try to find a free urb in the list */ | |
679 | urb = NULL; | |
680 | ||
681 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
682 | if (mos7720_port->write_urb_pool[i] && |
683 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { | |
0f64478c | 684 | urb = mos7720_port->write_urb_pool[i]; |
4da1a17d | 685 | dbg("URB:%d", i); |
0f64478c GKH |
686 | break; |
687 | } | |
688 | } | |
689 | ||
690 | if (urb == NULL) { | |
441b62c1 | 691 | dbg("%s - no more free urbs", __func__); |
0f64478c GKH |
692 | goto exit; |
693 | } | |
694 | ||
695 | if (urb->transfer_buffer == NULL) { | |
696 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
697 | GFP_KERNEL); | |
698 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
699 | dev_err(&port->dev, "%s no more kernel memory...\n", |
700 | __func__); | |
0f64478c GKH |
701 | goto exit; |
702 | } | |
703 | } | |
4da1a17d | 704 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
0f64478c GKH |
705 | |
706 | memcpy(urb->transfer_buffer, current_position, transfer_size); | |
441b62c1 | 707 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, |
0f64478c GKH |
708 | urb->transfer_buffer); |
709 | ||
710 | /* fill urb with data and submit */ | |
711 | usb_fill_bulk_urb(urb, serial->dev, | |
712 | usb_sndbulkpipe(serial->dev, | |
4da1a17d | 713 | port->bulk_out_endpointAddress), |
0f64478c GKH |
714 | urb->transfer_buffer, transfer_size, |
715 | mos7720_bulk_out_data_callback, mos7720_port); | |
716 | ||
717 | /* send it down the pipe */ | |
4da1a17d | 718 | status = usb_submit_urb(urb, GFP_ATOMIC); |
0f64478c | 719 | if (status) { |
194343d9 GKH |
720 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
721 | "with status = %d\n", __func__, status); | |
0f64478c GKH |
722 | bytes_sent = status; |
723 | goto exit; | |
724 | } | |
725 | bytes_sent = transfer_size; | |
726 | ||
727 | exit: | |
728 | return bytes_sent; | |
729 | } | |
730 | ||
95da310e | 731 | static void mos7720_throttle(struct tty_struct *tty) |
0f64478c | 732 | { |
95da310e | 733 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 734 | struct moschip_port *mos7720_port; |
0f64478c GKH |
735 | int status; |
736 | ||
441b62c1 | 737 | dbg("%s- port %d\n", __func__, port->number); |
0f64478c GKH |
738 | |
739 | mos7720_port = usb_get_serial_port_data(port); | |
740 | ||
741 | if (mos7720_port == NULL) | |
742 | return; | |
743 | ||
744 | if (!mos7720_port->open) { | |
745 | dbg("port not opened"); | |
746 | return; | |
747 | } | |
748 | ||
441b62c1 | 749 | dbg("%s: Entering ..........", __func__); |
0f64478c | 750 | |
0f64478c GKH |
751 | /* if we are implementing XON/XOFF, send the stop character */ |
752 | if (I_IXOFF(tty)) { | |
753 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e | 754 | status = mos7720_write(tty, port, &stop_char, 1); |
0f64478c GKH |
755 | if (status <= 0) |
756 | return; | |
757 | } | |
758 | ||
759 | /* if we are implementing RTS/CTS, toggle that line */ | |
760 | if (tty->termios->c_cflag & CRTSCTS) { | |
761 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; | |
762 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
763 | port->number - port->serial->minor, | |
764 | UART_MCR, &mos7720_port->shadowMCR); | |
765 | if (status != 0) | |
766 | return; | |
767 | } | |
768 | } | |
769 | ||
95da310e | 770 | static void mos7720_unthrottle(struct tty_struct *tty) |
0f64478c | 771 | { |
95da310e | 772 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 773 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
95da310e | 774 | int status; |
0f64478c GKH |
775 | |
776 | if (mos7720_port == NULL) | |
777 | return; | |
778 | ||
779 | if (!mos7720_port->open) { | |
441b62c1 | 780 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
781 | return; |
782 | } | |
783 | ||
441b62c1 | 784 | dbg("%s: Entering ..........", __func__); |
0f64478c | 785 | |
0f64478c GKH |
786 | /* if we are implementing XON/XOFF, send the start character */ |
787 | if (I_IXOFF(tty)) { | |
788 | unsigned char start_char = START_CHAR(tty); | |
95da310e | 789 | status = mos7720_write(tty, port, &start_char, 1); |
0f64478c GKH |
790 | if (status <= 0) |
791 | return; | |
792 | } | |
793 | ||
794 | /* if we are implementing RTS/CTS, toggle that line */ | |
795 | if (tty->termios->c_cflag & CRTSCTS) { | |
796 | mos7720_port->shadowMCR |= UART_MCR_RTS; | |
797 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
798 | port->number - port->serial->minor, | |
799 | UART_MCR, &mos7720_port->shadowMCR); | |
800 | if (status != 0) | |
801 | return; | |
802 | } | |
803 | } | |
804 | ||
805 | static int set_higher_rates(struct moschip_port *mos7720_port, | |
806 | unsigned int baud) | |
807 | { | |
808 | unsigned char data; | |
809 | struct usb_serial_port *port; | |
810 | struct usb_serial *serial; | |
811 | int port_number; | |
812 | ||
813 | if (mos7720_port == NULL) | |
814 | return -EINVAL; | |
815 | ||
816 | port = mos7720_port->port; | |
817 | serial = port->serial; | |
818 | ||
4da1a17d AC |
819 | /*********************************************** |
820 | * Init Sequence for higher rates | |
821 | ***********************************************/ | |
0f64478c GKH |
822 | dbg("Sending Setting Commands .........."); |
823 | port_number = port->number - port->serial->minor; | |
824 | ||
825 | data = 0x000; | |
826 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
827 | data = 0x000; | |
828 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
829 | data = 0x0CF; | |
830 | send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); | |
831 | data = 0x00b; | |
4da1a17d | 832 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
833 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
834 | data = 0x00b; | |
835 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
836 | ||
837 | data = 0x000; | |
838 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
839 | data = 0x000; | |
840 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
841 | ||
842 | ||
4da1a17d AC |
843 | /*********************************************** |
844 | * Set for higher rates * | |
845 | ***********************************************/ | |
0f64478c GKH |
846 | |
847 | data = baud * 0x10; | |
4da1a17d | 848 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
0f64478c GKH |
849 | |
850 | data = 0x003; | |
851 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
852 | data = 0x003; | |
853 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
854 | ||
855 | data = 0x02b; | |
4da1a17d | 856 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
857 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
858 | data = 0x02b; | |
859 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
860 | ||
4da1a17d AC |
861 | /*********************************************** |
862 | * Set DLL/DLM | |
863 | ***********************************************/ | |
0f64478c GKH |
864 | |
865 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
4da1a17d | 866 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
867 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
868 | ||
869 | data = 0x001; /* DLL */ | |
4da1a17d | 870 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
0f64478c | 871 | data = 0x000; /* DLM */ |
4da1a17d | 872 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
0f64478c GKH |
873 | |
874 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
4da1a17d | 875 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
876 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
881 | /* baud rate information */ | |
4da1a17d | 882 | struct divisor_table_entry { |
0f64478c GKH |
883 | __u32 baudrate; |
884 | __u16 divisor; | |
885 | }; | |
886 | ||
887 | /* Define table of divisors for moschip 7720 hardware * | |
888 | * These assume a 3.6864MHz crystal, the standard /16, and * | |
889 | * MCR.7 = 0. */ | |
890 | static struct divisor_table_entry divisor_table[] = { | |
891 | { 50, 2304}, | |
892 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ | |
893 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ | |
894 | { 150, 768}, | |
895 | { 300, 384}, | |
896 | { 600, 192}, | |
897 | { 1200, 96}, | |
898 | { 1800, 64}, | |
899 | { 2400, 48}, | |
900 | { 4800, 24}, | |
901 | { 7200, 16}, | |
902 | { 9600, 12}, | |
903 | { 19200, 6}, | |
904 | { 38400, 3}, | |
905 | { 57600, 2}, | |
906 | { 115200, 1}, | |
907 | }; | |
908 | ||
909 | /***************************************************************************** | |
910 | * calc_baud_rate_divisor | |
911 | * this function calculates the proper baud rate divisor for the specified | |
912 | * baud rate. | |
913 | *****************************************************************************/ | |
914 | static int calc_baud_rate_divisor(int baudrate, int *divisor) | |
915 | { | |
916 | int i; | |
917 | __u16 custom; | |
918 | __u16 round1; | |
919 | __u16 round; | |
920 | ||
921 | ||
441b62c1 | 922 | dbg("%s - %d", __func__, baudrate); |
0f64478c GKH |
923 | |
924 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { | |
925 | if (divisor_table[i].baudrate == baudrate) { | |
926 | *divisor = divisor_table[i].divisor; | |
927 | return 0; | |
928 | } | |
929 | } | |
930 | ||
4da1a17d AC |
931 | /* After trying for all the standard baud rates * |
932 | * Try calculating the divisor for this baud rate */ | |
0f64478c GKH |
933 | if (baudrate > 75 && baudrate < 230400) { |
934 | /* get the divisor */ | |
935 | custom = (__u16)(230400L / baudrate); | |
936 | ||
937 | /* Check for round off */ | |
938 | round1 = (__u16)(2304000L / baudrate); | |
939 | round = (__u16)(round1 - (custom * 10)); | |
940 | if (round > 4) | |
941 | custom++; | |
942 | *divisor = custom; | |
943 | ||
4da1a17d | 944 | dbg("Baud %d = %d", baudrate, custom); |
0f64478c GKH |
945 | return 0; |
946 | } | |
947 | ||
948 | dbg("Baud calculation Failed..."); | |
949 | return -EINVAL; | |
950 | } | |
951 | ||
952 | /* | |
953 | * send_cmd_write_baud_rate | |
954 | * this function sends the proper command to change the baud rate of the | |
955 | * specified port. | |
956 | */ | |
957 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, | |
958 | int baudrate) | |
959 | { | |
960 | struct usb_serial_port *port; | |
961 | struct usb_serial *serial; | |
962 | int divisor; | |
963 | int status; | |
964 | unsigned char data; | |
965 | unsigned char number; | |
966 | ||
967 | if (mos7720_port == NULL) | |
968 | return -1; | |
969 | ||
970 | port = mos7720_port->port; | |
971 | serial = port->serial; | |
972 | ||
441b62c1 | 973 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
974 | |
975 | number = port->number - port->serial->minor; | |
441b62c1 | 976 | dbg("%s - port = %d, baud = %d", __func__, port->number, baudrate); |
0f64478c | 977 | |
4da1a17d | 978 | /* Calculate the Divisor */ |
0f64478c GKH |
979 | status = calc_baud_rate_divisor(baudrate, &divisor); |
980 | if (status) { | |
194343d9 | 981 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
0f64478c GKH |
982 | return status; |
983 | } | |
984 | ||
4da1a17d AC |
985 | /* Enable access to divisor latch */ |
986 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
987 | mos7720_port->shadowLCR = data; | |
988 | send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); | |
0f64478c GKH |
989 | |
990 | /* Write the divisor */ | |
991 | data = ((unsigned char)(divisor & 0xff)); | |
4da1a17d | 992 | send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); |
0f64478c GKH |
993 | |
994 | data = ((unsigned char)((divisor & 0xff00) >> 8)); | |
4da1a17d | 995 | send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); |
0f64478c | 996 | |
4da1a17d AC |
997 | /* Disable access to divisor latch */ |
998 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
999 | mos7720_port->shadowLCR = data; | |
1000 | send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); | |
0f64478c GKH |
1001 | |
1002 | return status; | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * change_port_settings | |
1007 | * This routine is called to set the UART on the device to match | |
1008 | * the specified new settings. | |
1009 | */ | |
95da310e AC |
1010 | static void change_port_settings(struct tty_struct *tty, |
1011 | struct moschip_port *mos7720_port, | |
606d099c | 1012 | struct ktermios *old_termios) |
0f64478c GKH |
1013 | { |
1014 | struct usb_serial_port *port; | |
1015 | struct usb_serial *serial; | |
0f64478c GKH |
1016 | int baud; |
1017 | unsigned cflag; | |
1018 | unsigned iflag; | |
1019 | __u8 mask = 0xff; | |
1020 | __u8 lData; | |
1021 | __u8 lParity; | |
1022 | __u8 lStop; | |
1023 | int status; | |
1024 | int port_number; | |
1025 | char data; | |
1026 | ||
1027 | if (mos7720_port == NULL) | |
1028 | return ; | |
1029 | ||
1030 | port = mos7720_port->port; | |
1031 | serial = port->serial; | |
1032 | port_number = port->number - port->serial->minor; | |
1033 | ||
441b62c1 | 1034 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1035 | |
1036 | if (!mos7720_port->open) { | |
441b62c1 | 1037 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1038 | return; |
1039 | } | |
1040 | ||
441b62c1 | 1041 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1042 | |
1043 | lData = UART_LCR_WLEN8; | |
1044 | lStop = 0x00; /* 1 stop bit */ | |
1045 | lParity = 0x00; /* No parity */ | |
1046 | ||
1047 | cflag = tty->termios->c_cflag; | |
1048 | iflag = tty->termios->c_iflag; | |
1049 | ||
1050 | /* Change the number of bits */ | |
1051 | switch (cflag & CSIZE) { | |
1052 | case CS5: | |
1053 | lData = UART_LCR_WLEN5; | |
1054 | mask = 0x1f; | |
1055 | break; | |
1056 | ||
1057 | case CS6: | |
1058 | lData = UART_LCR_WLEN6; | |
1059 | mask = 0x3f; | |
1060 | break; | |
1061 | ||
1062 | case CS7: | |
1063 | lData = UART_LCR_WLEN7; | |
1064 | mask = 0x7f; | |
1065 | break; | |
1066 | default: | |
1067 | case CS8: | |
1068 | lData = UART_LCR_WLEN8; | |
1069 | break; | |
1070 | } | |
1071 | ||
1072 | /* Change the Parity bit */ | |
1073 | if (cflag & PARENB) { | |
1074 | if (cflag & PARODD) { | |
1075 | lParity = UART_LCR_PARITY; | |
441b62c1 | 1076 | dbg("%s - parity = odd", __func__); |
0f64478c GKH |
1077 | } else { |
1078 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); | |
441b62c1 | 1079 | dbg("%s - parity = even", __func__); |
0f64478c GKH |
1080 | } |
1081 | ||
1082 | } else { | |
441b62c1 | 1083 | dbg("%s - parity = none", __func__); |
0f64478c GKH |
1084 | } |
1085 | ||
1086 | if (cflag & CMSPAR) | |
1087 | lParity = lParity | 0x20; | |
1088 | ||
1089 | /* Change the Stop bit */ | |
1090 | if (cflag & CSTOPB) { | |
1091 | lStop = UART_LCR_STOP; | |
441b62c1 | 1092 | dbg("%s - stop bits = 2", __func__); |
0f64478c GKH |
1093 | } else { |
1094 | lStop = 0x00; | |
441b62c1 | 1095 | dbg("%s - stop bits = 1", __func__); |
0f64478c GKH |
1096 | } |
1097 | ||
1098 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
1099 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
1100 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
1101 | ||
1102 | /* Update the LCR with the correct value */ | |
4da1a17d AC |
1103 | mos7720_port->shadowLCR &= |
1104 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
0f64478c GKH |
1105 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
1106 | ||
1107 | ||
1108 | /* Disable Interrupts */ | |
1109 | data = 0x00; | |
4da1a17d AC |
1110 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
1111 | UART_IER, &data); | |
0f64478c GKH |
1112 | |
1113 | data = 0x00; | |
4da1a17d | 1114 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1115 | |
1116 | data = 0xcf; | |
4da1a17d | 1117 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1118 | |
1119 | /* Send the updated LCR value to the mos7720 */ | |
1120 | data = mos7720_port->shadowLCR; | |
4da1a17d | 1121 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); |
0f64478c | 1122 | |
4da1a17d AC |
1123 | data = 0x00b; |
1124 | mos7720_port->shadowMCR = data; | |
1125 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
1126 | data = 0x00b; | |
1127 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
0f64478c GKH |
1128 | |
1129 | /* set up the MCR register and send it to the mos7720 */ | |
1130 | mos7720_port->shadowMCR = UART_MCR_OUT2; | |
1131 | if (cflag & CBAUD) | |
1132 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); | |
1133 | ||
1134 | if (cflag & CRTSCTS) { | |
1135 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); | |
4da1a17d AC |
1136 | /* To set hardware flow control to the specified * |
1137 | * serial port, in SP1/2_CONTROL_REG */ | |
0f64478c GKH |
1138 | if (port->number) { |
1139 | data = 0x001; | |
1140 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1141 | 0x08, &data); | |
1142 | } else { | |
1143 | data = 0x002; | |
1144 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1145 | 0x08, &data); | |
1146 | } | |
1147 | } else { | |
1148 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); | |
1149 | } | |
1150 | ||
1151 | data = mos7720_port->shadowMCR; | |
1152 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); | |
1153 | ||
1154 | /* Determine divisor based on baud rate */ | |
1155 | baud = tty_get_baud_rate(tty); | |
1156 | if (!baud) { | |
1157 | /* pick a default, any default... */ | |
1158 | dbg("Picked default baud..."); | |
1159 | baud = 9600; | |
1160 | } | |
1161 | ||
1162 | if (baud >= 230400) { | |
1163 | set_higher_rates(mos7720_port, baud); | |
1164 | /* Enable Interrupts */ | |
1165 | data = 0x0c; | |
1166 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1167 | return; | |
1168 | } | |
1169 | ||
441b62c1 | 1170 | dbg("%s - baud rate = %d", __func__, baud); |
0f64478c | 1171 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
65d063ab AC |
1172 | /* FIXME: needs to write actual resulting baud back not just |
1173 | blindly do so */ | |
1174 | if (cflag & CBAUD) | |
1175 | tty_encode_baud_rate(tty, baud, baud); | |
0f64478c GKH |
1176 | /* Enable Interrupts */ |
1177 | data = 0x0c; | |
1178 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1179 | ||
1180 | if (port->read_urb->status != -EINPROGRESS) { | |
1181 | port->read_urb->dev = serial->dev; | |
1182 | ||
1183 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1184 | if (status) | |
1185 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1186 | status); | |
1187 | } | |
1188 | return; | |
1189 | } | |
1190 | ||
1191 | /* | |
1192 | * mos7720_set_termios | |
1193 | * this function is called by the tty driver when it wants to change the | |
1194 | * termios structure. | |
1195 | */ | |
95da310e AC |
1196 | static void mos7720_set_termios(struct tty_struct *tty, |
1197 | struct usb_serial_port *port, struct ktermios *old_termios) | |
0f64478c GKH |
1198 | { |
1199 | int status; | |
1200 | unsigned int cflag; | |
1201 | struct usb_serial *serial; | |
1202 | struct moschip_port *mos7720_port; | |
0f64478c GKH |
1203 | |
1204 | serial = port->serial; | |
1205 | ||
1206 | mos7720_port = usb_get_serial_port_data(port); | |
1207 | ||
1208 | if (mos7720_port == NULL) | |
1209 | return; | |
1210 | ||
0f64478c | 1211 | if (!mos7720_port->open) { |
441b62c1 | 1212 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1213 | return; |
1214 | } | |
1215 | ||
4da1a17d | 1216 | dbg("%s\n", "setting termios - ASPIRE"); |
0f64478c GKH |
1217 | |
1218 | cflag = tty->termios->c_cflag; | |
1219 | ||
441b62c1 | 1220 | dbg("%s - cflag %08x iflag %08x", __func__, |
0f64478c GKH |
1221 | tty->termios->c_cflag, |
1222 | RELEVANT_IFLAG(tty->termios->c_iflag)); | |
1223 | ||
441b62c1 | 1224 | dbg("%s - old cflag %08x old iflag %08x", __func__, |
65d063ab AC |
1225 | old_termios->c_cflag, |
1226 | RELEVANT_IFLAG(old_termios->c_iflag)); | |
0f64478c | 1227 | |
441b62c1 | 1228 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1229 | |
1230 | /* change the port settings to the new ones specified */ | |
95da310e | 1231 | change_port_settings(tty, mos7720_port, old_termios); |
0f64478c | 1232 | |
4da1a17d AC |
1233 | if (!port->read_urb) { |
1234 | dbg("%s", "URB KILLED !!!!!\n"); | |
0f64478c GKH |
1235 | return; |
1236 | } | |
1237 | ||
4da1a17d | 1238 | if (port->read_urb->status != -EINPROGRESS) { |
0f64478c GKH |
1239 | port->read_urb->dev = serial->dev; |
1240 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1241 | if (status) | |
1242 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1243 | status); | |
1244 | } | |
1245 | return; | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * get_lsr_info - get line status register info | |
1250 | * | |
1251 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1252 | * is emptied. On bus types like RS485, the transmitter must | |
1253 | * release the bus after transmitting. This must be done when | |
1254 | * the transmit shift register is empty, not be done when the | |
1255 | * transmit holding register is empty. This functionality | |
1256 | * allows an RS485 driver to be written in user space. | |
1257 | */ | |
4da1a17d AC |
1258 | static int get_lsr_info(struct tty_struct *tty, |
1259 | struct moschip_port *mos7720_port, unsigned int __user *value) | |
0f64478c GKH |
1260 | { |
1261 | int count; | |
1262 | unsigned int result = 0; | |
1263 | ||
95da310e | 1264 | count = mos7720_chars_in_buffer(tty); |
0f64478c | 1265 | if (count == 0) { |
441b62c1 | 1266 | dbg("%s -- Empty", __func__); |
0f64478c GKH |
1267 | result = TIOCSER_TEMT; |
1268 | } | |
1269 | ||
1270 | if (copy_to_user(value, &result, sizeof(int))) | |
1271 | return -EFAULT; | |
1272 | return 0; | |
1273 | } | |
1274 | ||
0f64478c GKH |
1275 | static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, |
1276 | unsigned int __user *value) | |
1277 | { | |
1278 | unsigned int mcr ; | |
1279 | unsigned int arg; | |
1280 | unsigned char data; | |
1281 | ||
1282 | struct usb_serial_port *port; | |
1283 | ||
1284 | if (mos7720_port == NULL) | |
1285 | return -1; | |
1286 | ||
4da1a17d | 1287 | port = (struct usb_serial_port *)mos7720_port->port; |
0f64478c GKH |
1288 | mcr = mos7720_port->shadowMCR; |
1289 | ||
1290 | if (copy_from_user(&arg, value, sizeof(int))) | |
1291 | return -EFAULT; | |
1292 | ||
1293 | switch (cmd) { | |
1294 | case TIOCMBIS: | |
1295 | if (arg & TIOCM_RTS) | |
1296 | mcr |= UART_MCR_RTS; | |
1297 | if (arg & TIOCM_DTR) | |
1298 | mcr |= UART_MCR_RTS; | |
1299 | if (arg & TIOCM_LOOP) | |
1300 | mcr |= UART_MCR_LOOP; | |
1301 | break; | |
1302 | ||
1303 | case TIOCMBIC: | |
1304 | if (arg & TIOCM_RTS) | |
1305 | mcr &= ~UART_MCR_RTS; | |
1306 | if (arg & TIOCM_DTR) | |
1307 | mcr &= ~UART_MCR_RTS; | |
1308 | if (arg & TIOCM_LOOP) | |
1309 | mcr &= ~UART_MCR_LOOP; | |
1310 | break; | |
1311 | ||
1312 | case TIOCMSET: | |
1313 | /* turn off the RTS and DTR and LOOPBACK | |
1314 | * and then only turn on what was asked to */ | |
1315 | mcr &= ~(UART_MCR_RTS | UART_MCR_DTR | UART_MCR_LOOP); | |
1316 | mcr |= ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0); | |
1317 | mcr |= ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0); | |
1318 | mcr |= ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0); | |
1319 | break; | |
1320 | } | |
1321 | ||
1322 | mos7720_port->shadowMCR = mcr; | |
1323 | ||
1324 | data = mos7720_port->shadowMCR; | |
1325 | send_mos_cmd(port->serial, MOS_WRITE, | |
1326 | port->number - port->serial->minor, UART_MCR, &data); | |
1327 | ||
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static int get_modem_info(struct moschip_port *mos7720_port, | |
1332 | unsigned int __user *value) | |
1333 | { | |
1334 | unsigned int result = 0; | |
1335 | unsigned int msr = mos7720_port->shadowMSR; | |
1336 | unsigned int mcr = mos7720_port->shadowMCR; | |
1337 | ||
1338 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1339 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1340 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1341 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1342 | | ((msr & UART_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1343 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1344 | ||
1345 | ||
441b62c1 | 1346 | dbg("%s -- %x", __func__, result); |
0f64478c GKH |
1347 | |
1348 | if (copy_to_user(value, &result, sizeof(int))) | |
1349 | return -EFAULT; | |
1350 | return 0; | |
1351 | } | |
1352 | ||
1353 | static int get_serial_info(struct moschip_port *mos7720_port, | |
1354 | struct serial_struct __user *retinfo) | |
1355 | { | |
1356 | struct serial_struct tmp; | |
1357 | ||
1358 | if (!retinfo) | |
1359 | return -EFAULT; | |
1360 | ||
1361 | memset(&tmp, 0, sizeof(tmp)); | |
1362 | ||
1363 | tmp.type = PORT_16550A; | |
1364 | tmp.line = mos7720_port->port->serial->minor; | |
1365 | tmp.port = mos7720_port->port->number; | |
1366 | tmp.irq = 0; | |
1367 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
4da1a17d | 1368 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
0f64478c GKH |
1369 | tmp.baud_base = 9600; |
1370 | tmp.close_delay = 5*HZ; | |
1371 | tmp.closing_wait = 30*HZ; | |
1372 | ||
1373 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1374 | return -EFAULT; | |
1375 | return 0; | |
1376 | } | |
1377 | ||
95da310e | 1378 | static int mos7720_ioctl(struct tty_struct *tty, struct file *file, |
0f64478c GKH |
1379 | unsigned int cmd, unsigned long arg) |
1380 | { | |
95da310e | 1381 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1382 | struct moschip_port *mos7720_port; |
1383 | struct async_icount cnow; | |
1384 | struct async_icount cprev; | |
1385 | struct serial_icounter_struct icount; | |
1386 | ||
1387 | mos7720_port = usb_get_serial_port_data(port); | |
1388 | if (mos7720_port == NULL) | |
1389 | return -ENODEV; | |
1390 | ||
441b62c1 | 1391 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
0f64478c GKH |
1392 | |
1393 | switch (cmd) { | |
0f64478c | 1394 | case TIOCSERGETLSR: |
441b62c1 | 1395 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
4da1a17d AC |
1396 | return get_lsr_info(tty, mos7720_port, |
1397 | (unsigned int __user *)arg); | |
0f64478c GKH |
1398 | return 0; |
1399 | ||
95da310e | 1400 | /* FIXME: These should be using the mode methods */ |
0f64478c GKH |
1401 | case TIOCMBIS: |
1402 | case TIOCMBIC: | |
1403 | case TIOCMSET: | |
4da1a17d AC |
1404 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", |
1405 | __func__, port->number); | |
0f64478c GKH |
1406 | return set_modem_info(mos7720_port, cmd, |
1407 | (unsigned int __user *)arg); | |
1408 | ||
1409 | case TIOCMGET: | |
441b62c1 | 1410 | dbg("%s (%d) TIOCMGET", __func__, port->number); |
0f64478c GKH |
1411 | return get_modem_info(mos7720_port, |
1412 | (unsigned int __user *)arg); | |
1413 | ||
1414 | case TIOCGSERIAL: | |
441b62c1 | 1415 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
0f64478c GKH |
1416 | return get_serial_info(mos7720_port, |
1417 | (struct serial_struct __user *)arg); | |
1418 | ||
0f64478c | 1419 | case TIOCMIWAIT: |
441b62c1 | 1420 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
0f64478c GKH |
1421 | cprev = mos7720_port->icount; |
1422 | while (1) { | |
1423 | if (signal_pending(current)) | |
1424 | return -ERESTARTSYS; | |
1425 | cnow = mos7720_port->icount; | |
1426 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1427 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1428 | return -EIO; /* no change => error */ | |
1429 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1430 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1431 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4da1a17d | 1432 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
0f64478c GKH |
1433 | return 0; |
1434 | } | |
1435 | cprev = cnow; | |
1436 | } | |
1437 | /* NOTREACHED */ | |
1438 | break; | |
1439 | ||
1440 | case TIOCGICOUNT: | |
1441 | cnow = mos7720_port->icount; | |
1442 | icount.cts = cnow.cts; | |
1443 | icount.dsr = cnow.dsr; | |
1444 | icount.rng = cnow.rng; | |
1445 | icount.dcd = cnow.dcd; | |
1446 | icount.rx = cnow.rx; | |
1447 | icount.tx = cnow.tx; | |
1448 | icount.frame = cnow.frame; | |
1449 | icount.overrun = cnow.overrun; | |
1450 | icount.parity = cnow.parity; | |
1451 | icount.brk = cnow.brk; | |
1452 | icount.buf_overrun = cnow.buf_overrun; | |
1453 | ||
441b62c1 | 1454 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
4da1a17d | 1455 | port->number, icount.rx, icount.tx); |
0f64478c GKH |
1456 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
1457 | return -EFAULT; | |
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | return -ENOIOCTLCMD; | |
1462 | } | |
1463 | ||
1464 | static int mos7720_startup(struct usb_serial *serial) | |
1465 | { | |
1466 | struct moschip_serial *mos7720_serial; | |
1467 | struct moschip_port *mos7720_port; | |
1468 | struct usb_device *dev; | |
1469 | int i; | |
1470 | char data; | |
1471 | ||
441b62c1 | 1472 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1473 | |
1474 | if (!serial) { | |
1475 | dbg("Invalid Handler"); | |
1476 | return -ENODEV; | |
1477 | } | |
1478 | ||
1479 | dev = serial->dev; | |
1480 | ||
1481 | /* create our private serial structure */ | |
1482 | mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); | |
1483 | if (mos7720_serial == NULL) { | |
194343d9 | 1484 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1485 | return -ENOMEM; |
1486 | } | |
1487 | ||
1488 | usb_set_serial_data(serial, mos7720_serial); | |
1489 | ||
1490 | /* we set up the pointers to the endpoints in the mos7720_open * | |
1491 | * function, as the structures aren't created yet. */ | |
1492 | ||
1493 | /* set up port private structures */ | |
1494 | for (i = 0; i < serial->num_ports; ++i) { | |
1495 | mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
1496 | if (mos7720_port == NULL) { | |
194343d9 | 1497 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1498 | usb_set_serial_data(serial, NULL); |
1499 | kfree(mos7720_serial); | |
1500 | return -ENOMEM; | |
1501 | } | |
1502 | ||
1503 | /* Initialize all port interrupt end point to port 0 int | |
1504 | * endpoint. Our device has only one interrupt endpoint | |
1505 | * comman to all ports */ | |
4da1a17d AC |
1506 | serial->port[i]->interrupt_in_endpointAddress = |
1507 | serial->port[0]->interrupt_in_endpointAddress; | |
0f64478c GKH |
1508 | |
1509 | mos7720_port->port = serial->port[i]; | |
1510 | usb_set_serial_port_data(serial->port[i], mos7720_port); | |
1511 | ||
1512 | dbg("port number is %d", serial->port[i]->number); | |
1513 | dbg("serial number is %d", serial->minor); | |
1514 | } | |
1515 | ||
1516 | ||
1517 | /* setting configuration feature to one */ | |
1518 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
4da1a17d | 1519 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); |
0f64478c | 1520 | |
4da1a17d AC |
1521 | /* LSR For Port 1 */ |
1522 | send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); | |
1523 | dbg("LSR:%x", data); | |
0f64478c | 1524 | |
4da1a17d AC |
1525 | /* LSR For Port 2 */ |
1526 | send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); | |
1527 | dbg("LSR:%x", data); | |
0f64478c GKH |
1528 | |
1529 | return 0; | |
1530 | } | |
1531 | ||
1532 | static void mos7720_shutdown(struct usb_serial *serial) | |
1533 | { | |
1534 | int i; | |
1535 | ||
1536 | /* free private structure allocated for serial port */ | |
4da1a17d | 1537 | for (i = 0; i < serial->num_ports; ++i) { |
0f64478c GKH |
1538 | kfree(usb_get_serial_port_data(serial->port[i])); |
1539 | usb_set_serial_port_data(serial->port[i], NULL); | |
1540 | } | |
1541 | ||
1542 | /* free private structure allocated for serial device */ | |
1543 | kfree(usb_get_serial_data(serial)); | |
1544 | usb_set_serial_data(serial, NULL); | |
1545 | } | |
1546 | ||
d9b1b787 JH |
1547 | static struct usb_driver usb_driver = { |
1548 | .name = "moschip7720", | |
1549 | .probe = usb_serial_probe, | |
1550 | .disconnect = usb_serial_disconnect, | |
1551 | .id_table = moschip_port_id_table, | |
1552 | .no_dynamic_id = 1, | |
1553 | }; | |
1554 | ||
0f64478c GKH |
1555 | static struct usb_serial_driver moschip7720_2port_driver = { |
1556 | .driver = { | |
1557 | .owner = THIS_MODULE, | |
1558 | .name = "moschip7720", | |
1559 | }, | |
1560 | .description = "Moschip 2 port adapter", | |
d9b1b787 | 1561 | .usb_driver = &usb_driver, |
0f64478c | 1562 | .id_table = moschip_port_id_table, |
0f64478c GKH |
1563 | .num_ports = 2, |
1564 | .open = mos7720_open, | |
1565 | .close = mos7720_close, | |
1566 | .throttle = mos7720_throttle, | |
1567 | .unthrottle = mos7720_unthrottle, | |
1568 | .attach = mos7720_startup, | |
1569 | .shutdown = mos7720_shutdown, | |
1570 | .ioctl = mos7720_ioctl, | |
1571 | .set_termios = mos7720_set_termios, | |
1572 | .write = mos7720_write, | |
1573 | .write_room = mos7720_write_room, | |
1574 | .chars_in_buffer = mos7720_chars_in_buffer, | |
1575 | .break_ctl = mos7720_break, | |
1576 | .read_bulk_callback = mos7720_bulk_in_callback, | |
e8e30c76 | 1577 | .read_int_callback = mos7720_interrupt_callback, |
0f64478c GKH |
1578 | }; |
1579 | ||
0f64478c GKH |
1580 | static int __init moschip7720_init(void) |
1581 | { | |
1582 | int retval; | |
1583 | ||
441b62c1 | 1584 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1585 | |
1586 | /* Register with the usb serial */ | |
1587 | retval = usb_serial_register(&moschip7720_2port_driver); | |
1588 | if (retval) | |
1589 | goto failed_port_device_register; | |
1590 | ||
c197a8db GKH |
1591 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1592 | DRIVER_DESC "\n"); | |
0f64478c GKH |
1593 | |
1594 | /* Register with the usb */ | |
1595 | retval = usb_register(&usb_driver); | |
1596 | if (retval) | |
1597 | goto failed_usb_register; | |
1598 | ||
1599 | return 0; | |
1600 | ||
1601 | failed_usb_register: | |
1602 | usb_serial_deregister(&moschip7720_2port_driver); | |
1603 | ||
1604 | failed_port_device_register: | |
1605 | return retval; | |
1606 | } | |
1607 | ||
1608 | static void __exit moschip7720_exit(void) | |
1609 | { | |
1610 | usb_deregister(&usb_driver); | |
1611 | usb_serial_deregister(&moschip7720_2port_driver); | |
1612 | } | |
1613 | ||
1614 | module_init(moschip7720_init); | |
1615 | module_exit(moschip7720_exit); | |
1616 | ||
1617 | /* Module information */ | |
4da1a17d AC |
1618 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1619 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0f64478c GKH |
1620 | MODULE_LICENSE("GPL"); |
1621 | ||
1622 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1623 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |