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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 | ||
0f608f89 | 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__); |
23198fda | 524 | return 0; |
0f64478c GKH |
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 | ||
335f8514 | 536 | static void mos7720_close(struct usb_serial_port *port) |
0f64478c GKH |
537 | { |
538 | struct usb_serial *serial; | |
539 | struct moschip_port *mos7720_port; | |
540 | char data; | |
541 | int j; | |
542 | ||
543 | dbg("mos7720_close:entering..."); | |
544 | ||
545 | serial = port->serial; | |
546 | ||
547 | mos7720_port = usb_get_serial_port_data(port); | |
548 | if (mos7720_port == NULL) | |
549 | return; | |
550 | ||
551 | for (j = 0; j < NUM_URBS; ++j) | |
552 | usb_kill_urb(mos7720_port->write_urb_pool[j]); | |
553 | ||
554 | /* Freeing Write URBs */ | |
555 | for (j = 0; j < NUM_URBS; ++j) { | |
556 | if (mos7720_port->write_urb_pool[j]) { | |
557 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); | |
558 | usb_free_urb(mos7720_port->write_urb_pool[j]); | |
559 | } | |
560 | } | |
561 | ||
562 | /* While closing port, shutdown all bulk read, write * | |
a1cd7e99 ON |
563 | * and interrupt read if they exists, otherwise nop */ |
564 | dbg("Shutdown bulk write"); | |
565 | usb_kill_urb(port->write_urb); | |
566 | dbg("Shutdown bulk read"); | |
567 | usb_kill_urb(port->read_urb); | |
568 | ||
569 | mutex_lock(&serial->disc_mutex); | |
570 | /* these commands must not be issued if the device has | |
571 | * been disconnected */ | |
572 | if (!serial->disconnected) { | |
573 | data = 0x00; | |
4da1a17d AC |
574 | send_mos_cmd(serial, MOS_WRITE, |
575 | port->number - port->serial->minor, 0x04, &data); | |
a1cd7e99 ON |
576 | |
577 | data = 0x00; | |
4da1a17d AC |
578 | send_mos_cmd(serial, MOS_WRITE, |
579 | port->number - port->serial->minor, 0x01, &data); | |
0f64478c | 580 | } |
a1cd7e99 | 581 | mutex_unlock(&serial->disc_mutex); |
0f64478c GKH |
582 | mos7720_port->open = 0; |
583 | ||
441b62c1 | 584 | dbg("Leaving %s", __func__); |
0f64478c GKH |
585 | } |
586 | ||
95da310e | 587 | static void mos7720_break(struct tty_struct *tty, int break_state) |
0f64478c | 588 | { |
95da310e | 589 | struct usb_serial_port *port = tty->driver_data; |
4da1a17d | 590 | unsigned char data; |
0f64478c GKH |
591 | struct usb_serial *serial; |
592 | struct moschip_port *mos7720_port; | |
593 | ||
441b62c1 | 594 | dbg("Entering %s", __func__); |
0f64478c GKH |
595 | |
596 | serial = port->serial; | |
597 | ||
598 | mos7720_port = usb_get_serial_port_data(port); | |
599 | if (mos7720_port == NULL) | |
600 | return; | |
601 | ||
602 | if (break_state == -1) | |
603 | data = mos7720_port->shadowLCR | UART_LCR_SBC; | |
604 | else | |
605 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; | |
606 | ||
607 | mos7720_port->shadowLCR = data; | |
608 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, | |
609 | 0x03, &data); | |
610 | ||
611 | return; | |
612 | } | |
613 | ||
614 | /* | |
615 | * mos7720_write_room | |
616 | * this function is called by the tty driver when it wants to know how many | |
617 | * bytes of data we can accept for a specific port. | |
618 | * If successful, we return the amount of room that we have for this port | |
619 | * Otherwise we return a negative error number. | |
620 | */ | |
95da310e | 621 | static int mos7720_write_room(struct tty_struct *tty) |
0f64478c | 622 | { |
95da310e | 623 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
624 | struct moschip_port *mos7720_port; |
625 | int room = 0; | |
626 | int i; | |
627 | ||
441b62c1 | 628 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
629 | |
630 | mos7720_port = usb_get_serial_port_data(port); | |
631 | if (mos7720_port == NULL) { | |
441b62c1 | 632 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
633 | return -ENODEV; |
634 | } | |
635 | ||
a5b6f60c | 636 | /* FIXME: Locking */ |
0f64478c | 637 | for (i = 0; i < NUM_URBS; ++i) { |
4da1a17d AC |
638 | if (mos7720_port->write_urb_pool[i] && |
639 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) | |
0f64478c GKH |
640 | room += URB_TRANSFER_BUFFER_SIZE; |
641 | } | |
642 | ||
441b62c1 | 643 | dbg("%s - returns %d", __func__, room); |
0f64478c GKH |
644 | return room; |
645 | } | |
646 | ||
95da310e AC |
647 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
648 | const unsigned char *data, int count) | |
0f64478c GKH |
649 | { |
650 | int status; | |
651 | int i; | |
652 | int bytes_sent = 0; | |
653 | int transfer_size; | |
654 | ||
655 | struct moschip_port *mos7720_port; | |
656 | struct usb_serial *serial; | |
657 | struct urb *urb; | |
658 | const unsigned char *current_position = data; | |
659 | ||
441b62c1 | 660 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
661 | |
662 | serial = port->serial; | |
663 | ||
664 | mos7720_port = usb_get_serial_port_data(port); | |
665 | if (mos7720_port == NULL) { | |
666 | dbg("mos7720_port is NULL"); | |
667 | return -ENODEV; | |
668 | } | |
669 | ||
670 | /* try to find a free urb in the list */ | |
671 | urb = NULL; | |
672 | ||
673 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
674 | if (mos7720_port->write_urb_pool[i] && |
675 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { | |
0f64478c | 676 | urb = mos7720_port->write_urb_pool[i]; |
4da1a17d | 677 | dbg("URB:%d", i); |
0f64478c GKH |
678 | break; |
679 | } | |
680 | } | |
681 | ||
682 | if (urb == NULL) { | |
441b62c1 | 683 | dbg("%s - no more free urbs", __func__); |
0f64478c GKH |
684 | goto exit; |
685 | } | |
686 | ||
687 | if (urb->transfer_buffer == NULL) { | |
688 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
689 | GFP_KERNEL); | |
690 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
691 | dev_err(&port->dev, "%s no more kernel memory...\n", |
692 | __func__); | |
0f64478c GKH |
693 | goto exit; |
694 | } | |
695 | } | |
4da1a17d | 696 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
0f64478c GKH |
697 | |
698 | memcpy(urb->transfer_buffer, current_position, transfer_size); | |
441b62c1 | 699 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, |
0f64478c GKH |
700 | urb->transfer_buffer); |
701 | ||
702 | /* fill urb with data and submit */ | |
703 | usb_fill_bulk_urb(urb, serial->dev, | |
704 | usb_sndbulkpipe(serial->dev, | |
4da1a17d | 705 | port->bulk_out_endpointAddress), |
0f64478c GKH |
706 | urb->transfer_buffer, transfer_size, |
707 | mos7720_bulk_out_data_callback, mos7720_port); | |
708 | ||
709 | /* send it down the pipe */ | |
4da1a17d | 710 | status = usb_submit_urb(urb, GFP_ATOMIC); |
0f64478c | 711 | if (status) { |
194343d9 GKH |
712 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
713 | "with status = %d\n", __func__, status); | |
0f64478c GKH |
714 | bytes_sent = status; |
715 | goto exit; | |
716 | } | |
717 | bytes_sent = transfer_size; | |
718 | ||
719 | exit: | |
720 | return bytes_sent; | |
721 | } | |
722 | ||
95da310e | 723 | static void mos7720_throttle(struct tty_struct *tty) |
0f64478c | 724 | { |
95da310e | 725 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 726 | struct moschip_port *mos7720_port; |
0f64478c GKH |
727 | int status; |
728 | ||
441b62c1 | 729 | dbg("%s- port %d\n", __func__, port->number); |
0f64478c GKH |
730 | |
731 | mos7720_port = usb_get_serial_port_data(port); | |
732 | ||
733 | if (mos7720_port == NULL) | |
734 | return; | |
735 | ||
736 | if (!mos7720_port->open) { | |
737 | dbg("port not opened"); | |
738 | return; | |
739 | } | |
740 | ||
441b62c1 | 741 | dbg("%s: Entering ..........", __func__); |
0f64478c | 742 | |
0f64478c GKH |
743 | /* if we are implementing XON/XOFF, send the stop character */ |
744 | if (I_IXOFF(tty)) { | |
745 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e | 746 | status = mos7720_write(tty, port, &stop_char, 1); |
0f64478c GKH |
747 | if (status <= 0) |
748 | return; | |
749 | } | |
750 | ||
751 | /* if we are implementing RTS/CTS, toggle that line */ | |
752 | if (tty->termios->c_cflag & CRTSCTS) { | |
753 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; | |
754 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
755 | port->number - port->serial->minor, | |
756 | UART_MCR, &mos7720_port->shadowMCR); | |
757 | if (status != 0) | |
758 | return; | |
759 | } | |
760 | } | |
761 | ||
95da310e | 762 | static void mos7720_unthrottle(struct tty_struct *tty) |
0f64478c | 763 | { |
95da310e | 764 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 765 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
95da310e | 766 | int status; |
0f64478c GKH |
767 | |
768 | if (mos7720_port == NULL) | |
769 | return; | |
770 | ||
771 | if (!mos7720_port->open) { | |
441b62c1 | 772 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
773 | return; |
774 | } | |
775 | ||
441b62c1 | 776 | dbg("%s: Entering ..........", __func__); |
0f64478c | 777 | |
0f64478c GKH |
778 | /* if we are implementing XON/XOFF, send the start character */ |
779 | if (I_IXOFF(tty)) { | |
780 | unsigned char start_char = START_CHAR(tty); | |
95da310e | 781 | status = mos7720_write(tty, port, &start_char, 1); |
0f64478c GKH |
782 | if (status <= 0) |
783 | return; | |
784 | } | |
785 | ||
786 | /* if we are implementing RTS/CTS, toggle that line */ | |
787 | if (tty->termios->c_cflag & CRTSCTS) { | |
788 | mos7720_port->shadowMCR |= UART_MCR_RTS; | |
789 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
790 | port->number - port->serial->minor, | |
791 | UART_MCR, &mos7720_port->shadowMCR); | |
792 | if (status != 0) | |
793 | return; | |
794 | } | |
795 | } | |
796 | ||
797 | static int set_higher_rates(struct moschip_port *mos7720_port, | |
798 | unsigned int baud) | |
799 | { | |
800 | unsigned char data; | |
801 | struct usb_serial_port *port; | |
802 | struct usb_serial *serial; | |
803 | int port_number; | |
804 | ||
805 | if (mos7720_port == NULL) | |
806 | return -EINVAL; | |
807 | ||
808 | port = mos7720_port->port; | |
809 | serial = port->serial; | |
810 | ||
4da1a17d AC |
811 | /*********************************************** |
812 | * Init Sequence for higher rates | |
813 | ***********************************************/ | |
0f64478c GKH |
814 | dbg("Sending Setting Commands .........."); |
815 | port_number = port->number - port->serial->minor; | |
816 | ||
817 | data = 0x000; | |
818 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
819 | data = 0x000; | |
820 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
821 | data = 0x0CF; | |
822 | send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); | |
823 | data = 0x00b; | |
4da1a17d | 824 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
825 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
826 | data = 0x00b; | |
827 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
828 | ||
829 | data = 0x000; | |
830 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
831 | data = 0x000; | |
832 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
833 | ||
834 | ||
4da1a17d AC |
835 | /*********************************************** |
836 | * Set for higher rates * | |
837 | ***********************************************/ | |
0f64478c GKH |
838 | |
839 | data = baud * 0x10; | |
4da1a17d | 840 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
0f64478c GKH |
841 | |
842 | data = 0x003; | |
843 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
844 | data = 0x003; | |
845 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
846 | ||
847 | data = 0x02b; | |
4da1a17d | 848 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
849 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
850 | data = 0x02b; | |
851 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
852 | ||
4da1a17d AC |
853 | /*********************************************** |
854 | * Set DLL/DLM | |
855 | ***********************************************/ | |
0f64478c GKH |
856 | |
857 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
4da1a17d | 858 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
859 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
860 | ||
861 | data = 0x001; /* DLL */ | |
4da1a17d | 862 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
0f64478c | 863 | data = 0x000; /* DLM */ |
4da1a17d | 864 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
0f64478c GKH |
865 | |
866 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
4da1a17d | 867 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
868 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
873 | /* baud rate information */ | |
4da1a17d | 874 | struct divisor_table_entry { |
0f64478c GKH |
875 | __u32 baudrate; |
876 | __u16 divisor; | |
877 | }; | |
878 | ||
879 | /* Define table of divisors for moschip 7720 hardware * | |
880 | * These assume a 3.6864MHz crystal, the standard /16, and * | |
881 | * MCR.7 = 0. */ | |
882 | static struct divisor_table_entry divisor_table[] = { | |
883 | { 50, 2304}, | |
884 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ | |
885 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ | |
886 | { 150, 768}, | |
887 | { 300, 384}, | |
888 | { 600, 192}, | |
889 | { 1200, 96}, | |
890 | { 1800, 64}, | |
891 | { 2400, 48}, | |
892 | { 4800, 24}, | |
893 | { 7200, 16}, | |
894 | { 9600, 12}, | |
895 | { 19200, 6}, | |
896 | { 38400, 3}, | |
897 | { 57600, 2}, | |
898 | { 115200, 1}, | |
899 | }; | |
900 | ||
901 | /***************************************************************************** | |
902 | * calc_baud_rate_divisor | |
903 | * this function calculates the proper baud rate divisor for the specified | |
904 | * baud rate. | |
905 | *****************************************************************************/ | |
906 | static int calc_baud_rate_divisor(int baudrate, int *divisor) | |
907 | { | |
908 | int i; | |
909 | __u16 custom; | |
910 | __u16 round1; | |
911 | __u16 round; | |
912 | ||
913 | ||
441b62c1 | 914 | dbg("%s - %d", __func__, baudrate); |
0f64478c GKH |
915 | |
916 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { | |
917 | if (divisor_table[i].baudrate == baudrate) { | |
918 | *divisor = divisor_table[i].divisor; | |
919 | return 0; | |
920 | } | |
921 | } | |
922 | ||
4da1a17d AC |
923 | /* After trying for all the standard baud rates * |
924 | * Try calculating the divisor for this baud rate */ | |
0f64478c GKH |
925 | if (baudrate > 75 && baudrate < 230400) { |
926 | /* get the divisor */ | |
927 | custom = (__u16)(230400L / baudrate); | |
928 | ||
929 | /* Check for round off */ | |
930 | round1 = (__u16)(2304000L / baudrate); | |
931 | round = (__u16)(round1 - (custom * 10)); | |
932 | if (round > 4) | |
933 | custom++; | |
934 | *divisor = custom; | |
935 | ||
4da1a17d | 936 | dbg("Baud %d = %d", baudrate, custom); |
0f64478c GKH |
937 | return 0; |
938 | } | |
939 | ||
940 | dbg("Baud calculation Failed..."); | |
941 | return -EINVAL; | |
942 | } | |
943 | ||
944 | /* | |
945 | * send_cmd_write_baud_rate | |
946 | * this function sends the proper command to change the baud rate of the | |
947 | * specified port. | |
948 | */ | |
949 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, | |
950 | int baudrate) | |
951 | { | |
952 | struct usb_serial_port *port; | |
953 | struct usb_serial *serial; | |
954 | int divisor; | |
955 | int status; | |
956 | unsigned char data; | |
957 | unsigned char number; | |
958 | ||
959 | if (mos7720_port == NULL) | |
960 | return -1; | |
961 | ||
962 | port = mos7720_port->port; | |
963 | serial = port->serial; | |
964 | ||
441b62c1 | 965 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
966 | |
967 | number = port->number - port->serial->minor; | |
441b62c1 | 968 | dbg("%s - port = %d, baud = %d", __func__, port->number, baudrate); |
0f64478c | 969 | |
4da1a17d | 970 | /* Calculate the Divisor */ |
0f64478c GKH |
971 | status = calc_baud_rate_divisor(baudrate, &divisor); |
972 | if (status) { | |
194343d9 | 973 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
0f64478c GKH |
974 | return status; |
975 | } | |
976 | ||
4da1a17d AC |
977 | /* Enable access to divisor latch */ |
978 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
979 | mos7720_port->shadowLCR = data; | |
980 | send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); | |
0f64478c GKH |
981 | |
982 | /* Write the divisor */ | |
983 | data = ((unsigned char)(divisor & 0xff)); | |
4da1a17d | 984 | send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); |
0f64478c GKH |
985 | |
986 | data = ((unsigned char)((divisor & 0xff00) >> 8)); | |
4da1a17d | 987 | send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); |
0f64478c | 988 | |
4da1a17d AC |
989 | /* Disable access to divisor latch */ |
990 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
991 | mos7720_port->shadowLCR = data; | |
992 | send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); | |
0f64478c GKH |
993 | |
994 | return status; | |
995 | } | |
996 | ||
997 | /* | |
998 | * change_port_settings | |
999 | * This routine is called to set the UART on the device to match | |
1000 | * the specified new settings. | |
1001 | */ | |
95da310e AC |
1002 | static void change_port_settings(struct tty_struct *tty, |
1003 | struct moschip_port *mos7720_port, | |
606d099c | 1004 | struct ktermios *old_termios) |
0f64478c GKH |
1005 | { |
1006 | struct usb_serial_port *port; | |
1007 | struct usb_serial *serial; | |
0f64478c GKH |
1008 | int baud; |
1009 | unsigned cflag; | |
1010 | unsigned iflag; | |
1011 | __u8 mask = 0xff; | |
1012 | __u8 lData; | |
1013 | __u8 lParity; | |
1014 | __u8 lStop; | |
1015 | int status; | |
1016 | int port_number; | |
1017 | char data; | |
1018 | ||
1019 | if (mos7720_port == NULL) | |
1020 | return ; | |
1021 | ||
1022 | port = mos7720_port->port; | |
1023 | serial = port->serial; | |
1024 | port_number = port->number - port->serial->minor; | |
1025 | ||
441b62c1 | 1026 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1027 | |
1028 | if (!mos7720_port->open) { | |
441b62c1 | 1029 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1030 | return; |
1031 | } | |
1032 | ||
441b62c1 | 1033 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1034 | |
1035 | lData = UART_LCR_WLEN8; | |
1036 | lStop = 0x00; /* 1 stop bit */ | |
1037 | lParity = 0x00; /* No parity */ | |
1038 | ||
1039 | cflag = tty->termios->c_cflag; | |
1040 | iflag = tty->termios->c_iflag; | |
1041 | ||
1042 | /* Change the number of bits */ | |
1043 | switch (cflag & CSIZE) { | |
1044 | case CS5: | |
1045 | lData = UART_LCR_WLEN5; | |
1046 | mask = 0x1f; | |
1047 | break; | |
1048 | ||
1049 | case CS6: | |
1050 | lData = UART_LCR_WLEN6; | |
1051 | mask = 0x3f; | |
1052 | break; | |
1053 | ||
1054 | case CS7: | |
1055 | lData = UART_LCR_WLEN7; | |
1056 | mask = 0x7f; | |
1057 | break; | |
1058 | default: | |
1059 | case CS8: | |
1060 | lData = UART_LCR_WLEN8; | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | /* Change the Parity bit */ | |
1065 | if (cflag & PARENB) { | |
1066 | if (cflag & PARODD) { | |
1067 | lParity = UART_LCR_PARITY; | |
441b62c1 | 1068 | dbg("%s - parity = odd", __func__); |
0f64478c GKH |
1069 | } else { |
1070 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); | |
441b62c1 | 1071 | dbg("%s - parity = even", __func__); |
0f64478c GKH |
1072 | } |
1073 | ||
1074 | } else { | |
441b62c1 | 1075 | dbg("%s - parity = none", __func__); |
0f64478c GKH |
1076 | } |
1077 | ||
1078 | if (cflag & CMSPAR) | |
1079 | lParity = lParity | 0x20; | |
1080 | ||
1081 | /* Change the Stop bit */ | |
1082 | if (cflag & CSTOPB) { | |
1083 | lStop = UART_LCR_STOP; | |
441b62c1 | 1084 | dbg("%s - stop bits = 2", __func__); |
0f64478c GKH |
1085 | } else { |
1086 | lStop = 0x00; | |
441b62c1 | 1087 | dbg("%s - stop bits = 1", __func__); |
0f64478c GKH |
1088 | } |
1089 | ||
1090 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
1091 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
1092 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
1093 | ||
1094 | /* Update the LCR with the correct value */ | |
4da1a17d AC |
1095 | mos7720_port->shadowLCR &= |
1096 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
0f64478c GKH |
1097 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
1098 | ||
1099 | ||
1100 | /* Disable Interrupts */ | |
1101 | data = 0x00; | |
4da1a17d AC |
1102 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
1103 | UART_IER, &data); | |
0f64478c GKH |
1104 | |
1105 | data = 0x00; | |
4da1a17d | 1106 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1107 | |
1108 | data = 0xcf; | |
4da1a17d | 1109 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1110 | |
1111 | /* Send the updated LCR value to the mos7720 */ | |
1112 | data = mos7720_port->shadowLCR; | |
4da1a17d | 1113 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); |
0f64478c | 1114 | |
4da1a17d AC |
1115 | data = 0x00b; |
1116 | mos7720_port->shadowMCR = data; | |
1117 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
1118 | data = 0x00b; | |
1119 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
0f64478c GKH |
1120 | |
1121 | /* set up the MCR register and send it to the mos7720 */ | |
1122 | mos7720_port->shadowMCR = UART_MCR_OUT2; | |
1123 | if (cflag & CBAUD) | |
1124 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); | |
1125 | ||
1126 | if (cflag & CRTSCTS) { | |
1127 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); | |
4da1a17d AC |
1128 | /* To set hardware flow control to the specified * |
1129 | * serial port, in SP1/2_CONTROL_REG */ | |
0f64478c GKH |
1130 | if (port->number) { |
1131 | data = 0x001; | |
1132 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1133 | 0x08, &data); | |
1134 | } else { | |
1135 | data = 0x002; | |
1136 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1137 | 0x08, &data); | |
1138 | } | |
1139 | } else { | |
1140 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); | |
1141 | } | |
1142 | ||
1143 | data = mos7720_port->shadowMCR; | |
1144 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); | |
1145 | ||
1146 | /* Determine divisor based on baud rate */ | |
1147 | baud = tty_get_baud_rate(tty); | |
1148 | if (!baud) { | |
1149 | /* pick a default, any default... */ | |
1150 | dbg("Picked default baud..."); | |
1151 | baud = 9600; | |
1152 | } | |
1153 | ||
1154 | if (baud >= 230400) { | |
1155 | set_higher_rates(mos7720_port, baud); | |
1156 | /* Enable Interrupts */ | |
1157 | data = 0x0c; | |
1158 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1159 | return; | |
1160 | } | |
1161 | ||
441b62c1 | 1162 | dbg("%s - baud rate = %d", __func__, baud); |
0f64478c | 1163 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
65d063ab AC |
1164 | /* FIXME: needs to write actual resulting baud back not just |
1165 | blindly do so */ | |
1166 | if (cflag & CBAUD) | |
1167 | tty_encode_baud_rate(tty, baud, baud); | |
0f64478c GKH |
1168 | /* Enable Interrupts */ |
1169 | data = 0x0c; | |
1170 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1171 | ||
1172 | if (port->read_urb->status != -EINPROGRESS) { | |
1173 | port->read_urb->dev = serial->dev; | |
1174 | ||
1175 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1176 | if (status) | |
1177 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1178 | status); | |
1179 | } | |
1180 | return; | |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * mos7720_set_termios | |
1185 | * this function is called by the tty driver when it wants to change the | |
1186 | * termios structure. | |
1187 | */ | |
95da310e AC |
1188 | static void mos7720_set_termios(struct tty_struct *tty, |
1189 | struct usb_serial_port *port, struct ktermios *old_termios) | |
0f64478c GKH |
1190 | { |
1191 | int status; | |
1192 | unsigned int cflag; | |
1193 | struct usb_serial *serial; | |
1194 | struct moschip_port *mos7720_port; | |
0f64478c GKH |
1195 | |
1196 | serial = port->serial; | |
1197 | ||
1198 | mos7720_port = usb_get_serial_port_data(port); | |
1199 | ||
1200 | if (mos7720_port == NULL) | |
1201 | return; | |
1202 | ||
0f64478c | 1203 | if (!mos7720_port->open) { |
441b62c1 | 1204 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1205 | return; |
1206 | } | |
1207 | ||
4da1a17d | 1208 | dbg("%s\n", "setting termios - ASPIRE"); |
0f64478c GKH |
1209 | |
1210 | cflag = tty->termios->c_cflag; | |
1211 | ||
441b62c1 | 1212 | dbg("%s - cflag %08x iflag %08x", __func__, |
0f64478c GKH |
1213 | tty->termios->c_cflag, |
1214 | RELEVANT_IFLAG(tty->termios->c_iflag)); | |
1215 | ||
441b62c1 | 1216 | dbg("%s - old cflag %08x old iflag %08x", __func__, |
65d063ab AC |
1217 | old_termios->c_cflag, |
1218 | RELEVANT_IFLAG(old_termios->c_iflag)); | |
0f64478c | 1219 | |
441b62c1 | 1220 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1221 | |
1222 | /* change the port settings to the new ones specified */ | |
95da310e | 1223 | change_port_settings(tty, mos7720_port, old_termios); |
0f64478c | 1224 | |
4da1a17d AC |
1225 | if (!port->read_urb) { |
1226 | dbg("%s", "URB KILLED !!!!!\n"); | |
0f64478c GKH |
1227 | return; |
1228 | } | |
1229 | ||
4da1a17d | 1230 | if (port->read_urb->status != -EINPROGRESS) { |
0f64478c GKH |
1231 | port->read_urb->dev = serial->dev; |
1232 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1233 | if (status) | |
1234 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1235 | status); | |
1236 | } | |
1237 | return; | |
1238 | } | |
1239 | ||
1240 | /* | |
1241 | * get_lsr_info - get line status register info | |
1242 | * | |
1243 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1244 | * is emptied. On bus types like RS485, the transmitter must | |
1245 | * release the bus after transmitting. This must be done when | |
1246 | * the transmit shift register is empty, not be done when the | |
1247 | * transmit holding register is empty. This functionality | |
1248 | * allows an RS485 driver to be written in user space. | |
1249 | */ | |
4da1a17d AC |
1250 | static int get_lsr_info(struct tty_struct *tty, |
1251 | struct moschip_port *mos7720_port, unsigned int __user *value) | |
0f64478c GKH |
1252 | { |
1253 | int count; | |
1254 | unsigned int result = 0; | |
1255 | ||
95da310e | 1256 | count = mos7720_chars_in_buffer(tty); |
0f64478c | 1257 | if (count == 0) { |
441b62c1 | 1258 | dbg("%s -- Empty", __func__); |
0f64478c GKH |
1259 | result = TIOCSER_TEMT; |
1260 | } | |
1261 | ||
1262 | if (copy_to_user(value, &result, sizeof(int))) | |
1263 | return -EFAULT; | |
1264 | return 0; | |
1265 | } | |
1266 | ||
0f608f89 KS |
1267 | static int mos7720_tiocmget(struct tty_struct *tty, struct file *file) |
1268 | { | |
1269 | struct usb_serial_port *port = tty->driver_data; | |
1270 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
1271 | unsigned int result = 0; | |
1272 | unsigned int mcr ; | |
1273 | unsigned int msr ; | |
1274 | ||
1275 | dbg("%s - port %d", __func__, port->number); | |
1276 | ||
1277 | mcr = mos7720_port->shadowMCR; | |
1278 | msr = mos7720_port->shadowMSR; | |
1279 | ||
1280 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ | |
1281 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ | |
1282 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ | |
1283 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR : 0) /* 0x040 */ | |
1284 | | ((msr & UART_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ | |
1285 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ | |
1286 | ||
1287 | dbg("%s -- %x", __func__, result); | |
1288 | ||
1289 | return result; | |
1290 | } | |
1291 | ||
1292 | static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, | |
1293 | unsigned int set, unsigned int clear) | |
1294 | { | |
1295 | struct usb_serial_port *port = tty->driver_data; | |
1296 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
1297 | unsigned int mcr ; | |
1298 | unsigned char lmcr; | |
1299 | ||
1300 | dbg("%s - port %d", __func__, port->number); | |
1301 | dbg("he was at tiocmget"); | |
1302 | ||
1303 | mcr = mos7720_port->shadowMCR; | |
1304 | ||
1305 | if (set & TIOCM_RTS) | |
1306 | mcr |= UART_MCR_RTS; | |
1307 | if (set & TIOCM_DTR) | |
1308 | mcr |= UART_MCR_DTR; | |
1309 | if (set & TIOCM_LOOP) | |
1310 | mcr |= UART_MCR_LOOP; | |
1311 | ||
1312 | if (clear & TIOCM_RTS) | |
1313 | mcr &= ~UART_MCR_RTS; | |
1314 | if (clear & TIOCM_DTR) | |
1315 | mcr &= ~UART_MCR_DTR; | |
1316 | if (clear & TIOCM_LOOP) | |
1317 | mcr &= ~UART_MCR_LOOP; | |
1318 | ||
1319 | mos7720_port->shadowMCR = mcr; | |
1320 | lmcr = mos7720_port->shadowMCR; | |
1321 | ||
1322 | send_mos_cmd(port->serial, MOS_WRITE, | |
1323 | port->number - port->serial->minor, UART_MCR, &lmcr); | |
1324 | ||
1325 | return 0; | |
1326 | } | |
1327 | ||
0f64478c GKH |
1328 | static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, |
1329 | unsigned int __user *value) | |
1330 | { | |
1331 | unsigned int mcr ; | |
1332 | unsigned int arg; | |
1333 | unsigned char data; | |
1334 | ||
1335 | struct usb_serial_port *port; | |
1336 | ||
1337 | if (mos7720_port == NULL) | |
1338 | return -1; | |
1339 | ||
4da1a17d | 1340 | port = (struct usb_serial_port *)mos7720_port->port; |
0f64478c GKH |
1341 | mcr = mos7720_port->shadowMCR; |
1342 | ||
1343 | if (copy_from_user(&arg, value, sizeof(int))) | |
1344 | return -EFAULT; | |
1345 | ||
1346 | switch (cmd) { | |
1347 | case TIOCMBIS: | |
1348 | if (arg & TIOCM_RTS) | |
1349 | mcr |= UART_MCR_RTS; | |
1350 | if (arg & TIOCM_DTR) | |
1351 | mcr |= UART_MCR_RTS; | |
1352 | if (arg & TIOCM_LOOP) | |
1353 | mcr |= UART_MCR_LOOP; | |
1354 | break; | |
1355 | ||
1356 | case TIOCMBIC: | |
1357 | if (arg & TIOCM_RTS) | |
1358 | mcr &= ~UART_MCR_RTS; | |
1359 | if (arg & TIOCM_DTR) | |
1360 | mcr &= ~UART_MCR_RTS; | |
1361 | if (arg & TIOCM_LOOP) | |
1362 | mcr &= ~UART_MCR_LOOP; | |
1363 | break; | |
1364 | ||
0f64478c GKH |
1365 | } |
1366 | ||
1367 | mos7720_port->shadowMCR = mcr; | |
1368 | ||
1369 | data = mos7720_port->shadowMCR; | |
1370 | send_mos_cmd(port->serial, MOS_WRITE, | |
1371 | port->number - port->serial->minor, UART_MCR, &data); | |
1372 | ||
1373 | return 0; | |
1374 | } | |
1375 | ||
0f64478c GKH |
1376 | static int get_serial_info(struct moschip_port *mos7720_port, |
1377 | struct serial_struct __user *retinfo) | |
1378 | { | |
1379 | struct serial_struct tmp; | |
1380 | ||
1381 | if (!retinfo) | |
1382 | return -EFAULT; | |
1383 | ||
1384 | memset(&tmp, 0, sizeof(tmp)); | |
1385 | ||
1386 | tmp.type = PORT_16550A; | |
1387 | tmp.line = mos7720_port->port->serial->minor; | |
1388 | tmp.port = mos7720_port->port->number; | |
1389 | tmp.irq = 0; | |
1390 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
4da1a17d | 1391 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
0f64478c GKH |
1392 | tmp.baud_base = 9600; |
1393 | tmp.close_delay = 5*HZ; | |
1394 | tmp.closing_wait = 30*HZ; | |
1395 | ||
1396 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1397 | return -EFAULT; | |
1398 | return 0; | |
1399 | } | |
1400 | ||
95da310e | 1401 | static int mos7720_ioctl(struct tty_struct *tty, struct file *file, |
0f64478c GKH |
1402 | unsigned int cmd, unsigned long arg) |
1403 | { | |
95da310e | 1404 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1405 | struct moschip_port *mos7720_port; |
1406 | struct async_icount cnow; | |
1407 | struct async_icount cprev; | |
1408 | struct serial_icounter_struct icount; | |
1409 | ||
1410 | mos7720_port = usb_get_serial_port_data(port); | |
1411 | if (mos7720_port == NULL) | |
1412 | return -ENODEV; | |
1413 | ||
441b62c1 | 1414 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
0f64478c GKH |
1415 | |
1416 | switch (cmd) { | |
0f64478c | 1417 | case TIOCSERGETLSR: |
441b62c1 | 1418 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
4da1a17d AC |
1419 | return get_lsr_info(tty, mos7720_port, |
1420 | (unsigned int __user *)arg); | |
0f64478c GKH |
1421 | return 0; |
1422 | ||
95da310e | 1423 | /* FIXME: These should be using the mode methods */ |
0f64478c GKH |
1424 | case TIOCMBIS: |
1425 | case TIOCMBIC: | |
4da1a17d AC |
1426 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", |
1427 | __func__, port->number); | |
0f64478c GKH |
1428 | return set_modem_info(mos7720_port, cmd, |
1429 | (unsigned int __user *)arg); | |
1430 | ||
0f64478c | 1431 | case TIOCGSERIAL: |
441b62c1 | 1432 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
0f64478c GKH |
1433 | return get_serial_info(mos7720_port, |
1434 | (struct serial_struct __user *)arg); | |
1435 | ||
0f64478c | 1436 | case TIOCMIWAIT: |
441b62c1 | 1437 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
0f64478c GKH |
1438 | cprev = mos7720_port->icount; |
1439 | while (1) { | |
1440 | if (signal_pending(current)) | |
1441 | return -ERESTARTSYS; | |
1442 | cnow = mos7720_port->icount; | |
1443 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1444 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1445 | return -EIO; /* no change => error */ | |
1446 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1447 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1448 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4da1a17d | 1449 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
0f64478c GKH |
1450 | return 0; |
1451 | } | |
1452 | cprev = cnow; | |
1453 | } | |
1454 | /* NOTREACHED */ | |
1455 | break; | |
1456 | ||
1457 | case TIOCGICOUNT: | |
1458 | cnow = mos7720_port->icount; | |
1459 | icount.cts = cnow.cts; | |
1460 | icount.dsr = cnow.dsr; | |
1461 | icount.rng = cnow.rng; | |
1462 | icount.dcd = cnow.dcd; | |
1463 | icount.rx = cnow.rx; | |
1464 | icount.tx = cnow.tx; | |
1465 | icount.frame = cnow.frame; | |
1466 | icount.overrun = cnow.overrun; | |
1467 | icount.parity = cnow.parity; | |
1468 | icount.brk = cnow.brk; | |
1469 | icount.buf_overrun = cnow.buf_overrun; | |
1470 | ||
441b62c1 | 1471 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
4da1a17d | 1472 | port->number, icount.rx, icount.tx); |
0f64478c GKH |
1473 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
1474 | return -EFAULT; | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | return -ENOIOCTLCMD; | |
1479 | } | |
1480 | ||
1481 | static int mos7720_startup(struct usb_serial *serial) | |
1482 | { | |
1483 | struct moschip_serial *mos7720_serial; | |
1484 | struct moschip_port *mos7720_port; | |
1485 | struct usb_device *dev; | |
1486 | int i; | |
1487 | char data; | |
1488 | ||
441b62c1 | 1489 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1490 | |
1491 | if (!serial) { | |
1492 | dbg("Invalid Handler"); | |
1493 | return -ENODEV; | |
1494 | } | |
1495 | ||
1496 | dev = serial->dev; | |
1497 | ||
1498 | /* create our private serial structure */ | |
1499 | mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); | |
1500 | if (mos7720_serial == NULL) { | |
194343d9 | 1501 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1502 | return -ENOMEM; |
1503 | } | |
1504 | ||
1505 | usb_set_serial_data(serial, mos7720_serial); | |
1506 | ||
1507 | /* we set up the pointers to the endpoints in the mos7720_open * | |
1508 | * function, as the structures aren't created yet. */ | |
1509 | ||
1510 | /* set up port private structures */ | |
1511 | for (i = 0; i < serial->num_ports; ++i) { | |
1512 | mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
1513 | if (mos7720_port == NULL) { | |
194343d9 | 1514 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1515 | usb_set_serial_data(serial, NULL); |
1516 | kfree(mos7720_serial); | |
1517 | return -ENOMEM; | |
1518 | } | |
1519 | ||
1520 | /* Initialize all port interrupt end point to port 0 int | |
1521 | * endpoint. Our device has only one interrupt endpoint | |
1522 | * comman to all ports */ | |
4da1a17d AC |
1523 | serial->port[i]->interrupt_in_endpointAddress = |
1524 | serial->port[0]->interrupt_in_endpointAddress; | |
0f64478c GKH |
1525 | |
1526 | mos7720_port->port = serial->port[i]; | |
1527 | usb_set_serial_port_data(serial->port[i], mos7720_port); | |
1528 | ||
1529 | dbg("port number is %d", serial->port[i]->number); | |
1530 | dbg("serial number is %d", serial->minor); | |
1531 | } | |
1532 | ||
1533 | ||
1534 | /* setting configuration feature to one */ | |
1535 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
4da1a17d | 1536 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); |
0f64478c | 1537 | |
4da1a17d AC |
1538 | /* LSR For Port 1 */ |
1539 | send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); | |
1540 | dbg("LSR:%x", data); | |
0f64478c | 1541 | |
4da1a17d AC |
1542 | /* LSR For Port 2 */ |
1543 | send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); | |
1544 | dbg("LSR:%x", data); | |
0f64478c GKH |
1545 | |
1546 | return 0; | |
1547 | } | |
1548 | ||
f9c99bb8 | 1549 | static void mos7720_release(struct usb_serial *serial) |
0f64478c GKH |
1550 | { |
1551 | int i; | |
1552 | ||
1553 | /* free private structure allocated for serial port */ | |
f9c99bb8 | 1554 | for (i = 0; i < serial->num_ports; ++i) |
0f64478c | 1555 | kfree(usb_get_serial_port_data(serial->port[i])); |
0f64478c GKH |
1556 | |
1557 | /* free private structure allocated for serial device */ | |
1558 | kfree(usb_get_serial_data(serial)); | |
0f64478c GKH |
1559 | } |
1560 | ||
d9b1b787 JH |
1561 | static struct usb_driver usb_driver = { |
1562 | .name = "moschip7720", | |
1563 | .probe = usb_serial_probe, | |
1564 | .disconnect = usb_serial_disconnect, | |
1565 | .id_table = moschip_port_id_table, | |
1566 | .no_dynamic_id = 1, | |
1567 | }; | |
1568 | ||
0f64478c GKH |
1569 | static struct usb_serial_driver moschip7720_2port_driver = { |
1570 | .driver = { | |
1571 | .owner = THIS_MODULE, | |
1572 | .name = "moschip7720", | |
1573 | }, | |
1574 | .description = "Moschip 2 port adapter", | |
d9b1b787 | 1575 | .usb_driver = &usb_driver, |
0f64478c | 1576 | .id_table = moschip_port_id_table, |
0f64478c GKH |
1577 | .num_ports = 2, |
1578 | .open = mos7720_open, | |
1579 | .close = mos7720_close, | |
1580 | .throttle = mos7720_throttle, | |
1581 | .unthrottle = mos7720_unthrottle, | |
1582 | .attach = mos7720_startup, | |
f9c99bb8 | 1583 | .release = mos7720_release, |
0f64478c | 1584 | .ioctl = mos7720_ioctl, |
0f608f89 KS |
1585 | .tiocmget = mos7720_tiocmget, |
1586 | .tiocmset = mos7720_tiocmset, | |
0f64478c GKH |
1587 | .set_termios = mos7720_set_termios, |
1588 | .write = mos7720_write, | |
1589 | .write_room = mos7720_write_room, | |
1590 | .chars_in_buffer = mos7720_chars_in_buffer, | |
1591 | .break_ctl = mos7720_break, | |
1592 | .read_bulk_callback = mos7720_bulk_in_callback, | |
e8e30c76 | 1593 | .read_int_callback = mos7720_interrupt_callback, |
0f64478c GKH |
1594 | }; |
1595 | ||
0f64478c GKH |
1596 | static int __init moschip7720_init(void) |
1597 | { | |
1598 | int retval; | |
1599 | ||
441b62c1 | 1600 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1601 | |
1602 | /* Register with the usb serial */ | |
1603 | retval = usb_serial_register(&moschip7720_2port_driver); | |
1604 | if (retval) | |
1605 | goto failed_port_device_register; | |
1606 | ||
c197a8db GKH |
1607 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1608 | DRIVER_DESC "\n"); | |
0f64478c GKH |
1609 | |
1610 | /* Register with the usb */ | |
1611 | retval = usb_register(&usb_driver); | |
1612 | if (retval) | |
1613 | goto failed_usb_register; | |
1614 | ||
1615 | return 0; | |
1616 | ||
1617 | failed_usb_register: | |
1618 | usb_serial_deregister(&moschip7720_2port_driver); | |
1619 | ||
1620 | failed_port_device_register: | |
1621 | return retval; | |
1622 | } | |
1623 | ||
1624 | static void __exit moschip7720_exit(void) | |
1625 | { | |
1626 | usb_deregister(&usb_driver); | |
1627 | usb_serial_deregister(&moschip7720_2port_driver); | |
1628 | } | |
1629 | ||
1630 | module_init(moschip7720_init); | |
1631 | module_exit(moschip7720_exit); | |
1632 | ||
1633 | /* Module information */ | |
4da1a17d AC |
1634 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1635 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0f64478c GKH |
1636 | MODULE_LICENSE("GPL"); |
1637 | ||
1638 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1639 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |