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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 | ||
95da310e | 219 | tty = port->port.tty; |
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 | } | |
225 | ||
226 | if (!port->read_urb) { | |
227 | dbg("URB KILLED !!!"); | |
228 | return; | |
229 | } | |
230 | ||
231 | if (port->read_urb->status != -EINPROGRESS) { | |
232 | port->read_urb->dev = port->serial->dev; | |
233 | ||
81105984 GKH |
234 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
235 | if (retval) | |
236 | dbg("usb_submit_urb(read bulk) failed, retval = %d", | |
237 | retval); | |
0f64478c GKH |
238 | } |
239 | } | |
240 | ||
241 | /* | |
242 | * mos7720_bulk_out_data_callback | |
243 | * this is the callback function for when we have finished sending serial | |
244 | * data on the bulk out endpoint. | |
245 | */ | |
246 | static void mos7720_bulk_out_data_callback(struct urb *urb) | |
247 | { | |
248 | struct moschip_port *mos7720_port; | |
249 | struct tty_struct *tty; | |
81105984 | 250 | int status = urb->status; |
0f64478c | 251 | |
81105984 GKH |
252 | if (status) { |
253 | dbg("nonzero write bulk status received:%d", status); | |
0f64478c GKH |
254 | return; |
255 | } | |
256 | ||
257 | mos7720_port = urb->context; | |
258 | if (!mos7720_port) { | |
259 | dbg("NULL mos7720_port pointer"); | |
260 | return ; | |
261 | } | |
262 | ||
263 | dbg("Entering ........."); | |
264 | ||
95da310e | 265 | tty = mos7720_port->port->port.tty; |
0f64478c | 266 | |
b963a844 JS |
267 | if (tty && mos7720_port->open) |
268 | tty_wakeup(tty); | |
0f64478c GKH |
269 | } |
270 | ||
271 | /* | |
272 | * send_mos_cmd | |
273 | * this function will be used for sending command to device | |
274 | */ | |
275 | static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value, | |
276 | __u16 index, void *data) | |
277 | { | |
278 | int status; | |
279 | unsigned int pipe; | |
280 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); | |
281 | __u8 requesttype; | |
282 | __u16 size = 0x0000; | |
283 | ||
284 | if (value < MOS_MAX_PORT) { | |
4da1a17d | 285 | if (product == MOSCHIP_DEVICE_ID_7715) |
0f64478c | 286 | value = value*0x100+0x100; |
4da1a17d | 287 | else |
0f64478c | 288 | value = value*0x100+0x200; |
0f64478c GKH |
289 | } else { |
290 | value = 0x0000; | |
291 | if ((product == MOSCHIP_DEVICE_ID_7715) && | |
292 | (index != 0x08)) { | |
293 | dbg("serial->product== MOSCHIP_DEVICE_ID_7715"); | |
4da1a17d | 294 | /* index = 0x01 ; */ |
0f64478c GKH |
295 | } |
296 | } | |
297 | ||
298 | if (request == MOS_WRITE) { | |
299 | request = (__u8)MOS_WRITE; | |
300 | requesttype = (__u8)0x40; | |
301 | value = value + (__u16)*((unsigned char *)data); | |
302 | data = NULL; | |
303 | pipe = usb_sndctrlpipe(serial->dev, 0); | |
304 | } else { | |
305 | request = (__u8)MOS_READ; | |
306 | requesttype = (__u8)0xC0; | |
307 | size = 0x01; | |
4da1a17d | 308 | pipe = usb_rcvctrlpipe(serial->dev, 0); |
0f64478c GKH |
309 | } |
310 | ||
311 | status = usb_control_msg(serial->dev, pipe, request, requesttype, | |
312 | value, index, data, size, MOS_WDR_TIMEOUT); | |
313 | ||
314 | if (status < 0) | |
4da1a17d | 315 | dbg("Command Write failed Value %x index %x\n", value, index); |
0f64478c GKH |
316 | |
317 | return status; | |
318 | } | |
319 | ||
95da310e | 320 | static int mos7720_open(struct tty_struct *tty, |
4da1a17d | 321 | struct usb_serial_port *port, struct file *filp) |
0f64478c GKH |
322 | { |
323 | struct usb_serial *serial; | |
324 | struct usb_serial_port *port0; | |
325 | struct urb *urb; | |
326 | struct moschip_serial *mos7720_serial; | |
327 | struct moschip_port *mos7720_port; | |
328 | int response; | |
329 | int port_number; | |
330 | char data; | |
fe4b65ec | 331 | int allocated_urbs = 0; |
0f64478c GKH |
332 | int j; |
333 | ||
334 | serial = port->serial; | |
335 | ||
336 | mos7720_port = usb_get_serial_port_data(port); | |
337 | if (mos7720_port == NULL) | |
338 | return -ENODEV; | |
339 | ||
340 | port0 = serial->port[0]; | |
341 | ||
342 | mos7720_serial = usb_get_serial_data(serial); | |
343 | ||
344 | if (mos7720_serial == NULL || port0 == NULL) | |
345 | return -ENODEV; | |
346 | ||
347 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
348 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
349 | ||
350 | /* Initialising the write urb pool */ | |
351 | for (j = 0; j < NUM_URBS; ++j) { | |
4da1a17d | 352 | urb = usb_alloc_urb(0, GFP_KERNEL); |
0f64478c GKH |
353 | mos7720_port->write_urb_pool[j] = urb; |
354 | ||
355 | if (urb == NULL) { | |
356 | err("No more urbs???"); | |
357 | continue; | |
358 | } | |
359 | ||
360 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
361 | GFP_KERNEL); | |
362 | if (!urb->transfer_buffer) { | |
441b62c1 | 363 | err("%s-out of memory for urb buffers.", __func__); |
fe4b65ec ON |
364 | usb_free_urb(mos7720_port->write_urb_pool[j]); |
365 | mos7720_port->write_urb_pool[j] = NULL; | |
0f64478c GKH |
366 | continue; |
367 | } | |
fe4b65ec | 368 | allocated_urbs++; |
0f64478c GKH |
369 | } |
370 | ||
fe4b65ec ON |
371 | if (!allocated_urbs) |
372 | return -ENOMEM; | |
373 | ||
0f64478c GKH |
374 | /* Initialize MCS7720 -- Write Init values to corresponding Registers |
375 | * | |
376 | * Register Index | |
377 | * 1 : IER | |
378 | * 2 : FCR | |
379 | * 3 : LCR | |
380 | * 4 : MCR | |
381 | * | |
382 | * 0x08 : SP1/2 Control Reg | |
383 | */ | |
384 | port_number = port->number - port->serial->minor; | |
385 | send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data); | |
4da1a17d | 386 | dbg("SS::%p LSR:%x\n", mos7720_port, data); |
0f64478c GKH |
387 | |
388 | dbg("Check:Sending Command .........."); | |
389 | ||
390 | data = 0x02; | |
391 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x01, &data); | |
392 | data = 0x02; | |
393 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x02, &data); | |
394 | ||
395 | data = 0x00; | |
396 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
397 | data = 0x00; | |
398 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
399 | ||
400 | data = 0xCF; | |
401 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
402 | data = 0x03; | |
4da1a17d | 403 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
404 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
405 | data = 0x0b; | |
4da1a17d | 406 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
407 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
408 | data = 0x0b; | |
409 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
410 | ||
411 | data = 0x00; | |
412 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
413 | data = 0x00; | |
414 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
415 | ||
416 | /* data = 0x00; | |
417 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, port_number + 1, &data); | |
418 | data = 0x03; | |
419 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); | |
420 | data = 0x00; | |
4da1a17d AC |
421 | send_mos_cmd(port->serial, MOS_WRITE, MOS_MAX_PORT, |
422 | port_number + 1, &data); | |
0f64478c GKH |
423 | */ |
424 | data = 0x00; | |
425 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
426 | ||
427 | data = data | (port->number - port->serial->minor + 1); | |
428 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
429 | ||
430 | data = 0x83; | |
4da1a17d | 431 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
432 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
433 | data = 0x0c; | |
434 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); | |
435 | data = 0x00; | |
436 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
437 | data = 0x03; | |
4da1a17d | 438 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
439 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
440 | data = 0x0c; | |
441 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
442 | data = 0x0c; | |
443 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
444 | ||
0f64478c GKH |
445 | /* force low_latency on so that our tty_push actually forces * |
446 | * the data through,otherwise it is scheduled, and with * | |
447 | * high data rates (like with OHCI) data can get lost. */ | |
448 | ||
95da310e AC |
449 | if (tty) |
450 | tty->low_latency = 1; | |
0f64478c GKH |
451 | |
452 | /* see if we've set up our endpoint info yet * | |
453 | * (can't set it up in mos7720_startup as the * | |
454 | * structures were not set up at that time.) */ | |
455 | if (!mos7720_serial->interrupt_started) { | |
456 | dbg("Interrupt buffer NULL !!!"); | |
457 | ||
458 | /* not set up yet, so do it now */ | |
459 | mos7720_serial->interrupt_started = 1; | |
460 | ||
461 | dbg("To Submit URB !!!"); | |
462 | ||
463 | /* set up our interrupt urb */ | |
464 | usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, | |
4da1a17d AC |
465 | usb_rcvintpipe(serial->dev, |
466 | port->interrupt_in_endpointAddress), | |
467 | port0->interrupt_in_buffer, | |
468 | port0->interrupt_in_urb->transfer_buffer_length, | |
469 | mos7720_interrupt_callback, mos7720_port, | |
470 | port0->interrupt_in_urb->interval); | |
0f64478c GKH |
471 | |
472 | /* start interrupt read for this mos7720 this interrupt * | |
4da1a17d | 473 | * will continue as long as the mos7720 is connected */ |
0f64478c GKH |
474 | dbg("Submit URB over !!!"); |
475 | response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); | |
476 | if (response) | |
477 | dev_err(&port->dev, | |
898eb71c | 478 | "%s - Error %d submitting control urb\n", |
441b62c1 | 479 | __func__, response); |
0f64478c GKH |
480 | } |
481 | ||
482 | /* set up our bulk in urb */ | |
483 | usb_fill_bulk_urb(port->read_urb, serial->dev, | |
484 | usb_rcvbulkpipe(serial->dev, | |
4da1a17d | 485 | port->bulk_in_endpointAddress), |
0f64478c GKH |
486 | port->bulk_in_buffer, |
487 | port->read_urb->transfer_buffer_length, | |
488 | mos7720_bulk_in_callback, mos7720_port); | |
489 | response = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
490 | if (response) | |
4da1a17d AC |
491 | dev_err(&port->dev, "%s - Error %d submitting read urb\n", |
492 | __func__, response); | |
0f64478c GKH |
493 | |
494 | /* initialize our icount structure */ | |
495 | memset(&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount)); | |
496 | ||
497 | /* initialize our port settings */ | |
498 | mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ | |
499 | ||
500 | /* send a open port command */ | |
501 | mos7720_port->open = 1; | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
506 | /* | |
507 | * mos7720_chars_in_buffer | |
508 | * this function is called by the tty driver when it wants to know how many | |
509 | * bytes of data we currently have outstanding in the port (data that has | |
510 | * been written, but hasn't made it out the port yet) | |
511 | * If successful, we return the number of bytes left to be written in the | |
512 | * system, | |
513 | * Otherwise we return a negative error number. | |
514 | */ | |
95da310e | 515 | static int mos7720_chars_in_buffer(struct tty_struct *tty) |
0f64478c | 516 | { |
95da310e | 517 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
518 | int i; |
519 | int chars = 0; | |
520 | struct moschip_port *mos7720_port; | |
521 | ||
441b62c1 | 522 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
523 | |
524 | mos7720_port = usb_get_serial_port_data(port); | |
525 | if (mos7720_port == NULL) { | |
441b62c1 | 526 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
527 | return -ENODEV; |
528 | } | |
529 | ||
530 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
531 | if (mos7720_port->write_urb_pool[i] && |
532 | mos7720_port->write_urb_pool[i]->status == -EINPROGRESS) | |
0f64478c GKH |
533 | chars += URB_TRANSFER_BUFFER_SIZE; |
534 | } | |
441b62c1 | 535 | dbg("%s - returns %d", __func__, chars); |
0f64478c GKH |
536 | return chars; |
537 | } | |
538 | ||
95da310e AC |
539 | static void mos7720_close(struct tty_struct *tty, |
540 | struct usb_serial_port *port, struct file *filp) | |
0f64478c GKH |
541 | { |
542 | struct usb_serial *serial; | |
543 | struct moschip_port *mos7720_port; | |
544 | char data; | |
545 | int j; | |
546 | ||
547 | dbg("mos7720_close:entering..."); | |
548 | ||
549 | serial = port->serial; | |
550 | ||
551 | mos7720_port = usb_get_serial_port_data(port); | |
552 | if (mos7720_port == NULL) | |
553 | return; | |
554 | ||
555 | for (j = 0; j < NUM_URBS; ++j) | |
556 | usb_kill_urb(mos7720_port->write_urb_pool[j]); | |
557 | ||
558 | /* Freeing Write URBs */ | |
559 | for (j = 0; j < NUM_URBS; ++j) { | |
560 | if (mos7720_port->write_urb_pool[j]) { | |
561 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); | |
562 | usb_free_urb(mos7720_port->write_urb_pool[j]); | |
563 | } | |
564 | } | |
565 | ||
566 | /* While closing port, shutdown all bulk read, write * | |
a1cd7e99 ON |
567 | * and interrupt read if they exists, otherwise nop */ |
568 | dbg("Shutdown bulk write"); | |
569 | usb_kill_urb(port->write_urb); | |
570 | dbg("Shutdown bulk read"); | |
571 | usb_kill_urb(port->read_urb); | |
572 | ||
573 | mutex_lock(&serial->disc_mutex); | |
574 | /* these commands must not be issued if the device has | |
575 | * been disconnected */ | |
576 | if (!serial->disconnected) { | |
577 | data = 0x00; | |
4da1a17d AC |
578 | send_mos_cmd(serial, MOS_WRITE, |
579 | port->number - port->serial->minor, 0x04, &data); | |
a1cd7e99 ON |
580 | |
581 | data = 0x00; | |
4da1a17d AC |
582 | send_mos_cmd(serial, MOS_WRITE, |
583 | port->number - port->serial->minor, 0x01, &data); | |
0f64478c | 584 | } |
a1cd7e99 | 585 | mutex_unlock(&serial->disc_mutex); |
0f64478c GKH |
586 | mos7720_port->open = 0; |
587 | ||
441b62c1 | 588 | dbg("Leaving %s", __func__); |
0f64478c GKH |
589 | } |
590 | ||
95da310e | 591 | static void mos7720_break(struct tty_struct *tty, int break_state) |
0f64478c | 592 | { |
95da310e | 593 | struct usb_serial_port *port = tty->driver_data; |
4da1a17d | 594 | unsigned char data; |
0f64478c GKH |
595 | struct usb_serial *serial; |
596 | struct moschip_port *mos7720_port; | |
597 | ||
441b62c1 | 598 | dbg("Entering %s", __func__); |
0f64478c GKH |
599 | |
600 | serial = port->serial; | |
601 | ||
602 | mos7720_port = usb_get_serial_port_data(port); | |
603 | if (mos7720_port == NULL) | |
604 | return; | |
605 | ||
606 | if (break_state == -1) | |
607 | data = mos7720_port->shadowLCR | UART_LCR_SBC; | |
608 | else | |
609 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; | |
610 | ||
611 | mos7720_port->shadowLCR = data; | |
612 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, | |
613 | 0x03, &data); | |
614 | ||
615 | return; | |
616 | } | |
617 | ||
618 | /* | |
619 | * mos7720_write_room | |
620 | * this function is called by the tty driver when it wants to know how many | |
621 | * bytes of data we can accept for a specific port. | |
622 | * If successful, we return the amount of room that we have for this port | |
623 | * Otherwise we return a negative error number. | |
624 | */ | |
95da310e | 625 | static int mos7720_write_room(struct tty_struct *tty) |
0f64478c | 626 | { |
95da310e | 627 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
628 | struct moschip_port *mos7720_port; |
629 | int room = 0; | |
630 | int i; | |
631 | ||
441b62c1 | 632 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
633 | |
634 | mos7720_port = usb_get_serial_port_data(port); | |
635 | if (mos7720_port == NULL) { | |
441b62c1 | 636 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
637 | return -ENODEV; |
638 | } | |
639 | ||
a5b6f60c | 640 | /* FIXME: Locking */ |
0f64478c | 641 | for (i = 0; i < NUM_URBS; ++i) { |
4da1a17d AC |
642 | if (mos7720_port->write_urb_pool[i] && |
643 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) | |
0f64478c GKH |
644 | room += URB_TRANSFER_BUFFER_SIZE; |
645 | } | |
646 | ||
441b62c1 | 647 | dbg("%s - returns %d", __func__, room); |
0f64478c GKH |
648 | return room; |
649 | } | |
650 | ||
95da310e AC |
651 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
652 | const unsigned char *data, int count) | |
0f64478c GKH |
653 | { |
654 | int status; | |
655 | int i; | |
656 | int bytes_sent = 0; | |
657 | int transfer_size; | |
658 | ||
659 | struct moschip_port *mos7720_port; | |
660 | struct usb_serial *serial; | |
661 | struct urb *urb; | |
662 | const unsigned char *current_position = data; | |
663 | ||
441b62c1 | 664 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
665 | |
666 | serial = port->serial; | |
667 | ||
668 | mos7720_port = usb_get_serial_port_data(port); | |
669 | if (mos7720_port == NULL) { | |
670 | dbg("mos7720_port is NULL"); | |
671 | return -ENODEV; | |
672 | } | |
673 | ||
674 | /* try to find a free urb in the list */ | |
675 | urb = NULL; | |
676 | ||
677 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
678 | if (mos7720_port->write_urb_pool[i] && |
679 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { | |
0f64478c | 680 | urb = mos7720_port->write_urb_pool[i]; |
4da1a17d | 681 | dbg("URB:%d", i); |
0f64478c GKH |
682 | break; |
683 | } | |
684 | } | |
685 | ||
686 | if (urb == NULL) { | |
441b62c1 | 687 | dbg("%s - no more free urbs", __func__); |
0f64478c GKH |
688 | goto exit; |
689 | } | |
690 | ||
691 | if (urb->transfer_buffer == NULL) { | |
692 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
693 | GFP_KERNEL); | |
694 | if (urb->transfer_buffer == NULL) { | |
441b62c1 | 695 | err("%s no more kernel memory...", __func__); |
0f64478c GKH |
696 | goto exit; |
697 | } | |
698 | } | |
4da1a17d | 699 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
0f64478c GKH |
700 | |
701 | memcpy(urb->transfer_buffer, current_position, transfer_size); | |
441b62c1 | 702 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, |
0f64478c GKH |
703 | urb->transfer_buffer); |
704 | ||
705 | /* fill urb with data and submit */ | |
706 | usb_fill_bulk_urb(urb, serial->dev, | |
707 | usb_sndbulkpipe(serial->dev, | |
4da1a17d | 708 | port->bulk_out_endpointAddress), |
0f64478c GKH |
709 | urb->transfer_buffer, transfer_size, |
710 | mos7720_bulk_out_data_callback, mos7720_port); | |
711 | ||
712 | /* send it down the pipe */ | |
4da1a17d | 713 | status = usb_submit_urb(urb, GFP_ATOMIC); |
0f64478c GKH |
714 | if (status) { |
715 | err("%s - usb_submit_urb(write bulk) failed with status = %d", | |
441b62c1 | 716 | __func__, status); |
0f64478c GKH |
717 | bytes_sent = status; |
718 | goto exit; | |
719 | } | |
720 | bytes_sent = transfer_size; | |
721 | ||
722 | exit: | |
723 | return bytes_sent; | |
724 | } | |
725 | ||
95da310e | 726 | static void mos7720_throttle(struct tty_struct *tty) |
0f64478c | 727 | { |
95da310e | 728 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 729 | struct moschip_port *mos7720_port; |
0f64478c GKH |
730 | int status; |
731 | ||
441b62c1 | 732 | dbg("%s- port %d\n", __func__, port->number); |
0f64478c GKH |
733 | |
734 | mos7720_port = usb_get_serial_port_data(port); | |
735 | ||
736 | if (mos7720_port == NULL) | |
737 | return; | |
738 | ||
739 | if (!mos7720_port->open) { | |
740 | dbg("port not opened"); | |
741 | return; | |
742 | } | |
743 | ||
441b62c1 | 744 | dbg("%s: Entering ..........", __func__); |
0f64478c | 745 | |
0f64478c GKH |
746 | /* if we are implementing XON/XOFF, send the stop character */ |
747 | if (I_IXOFF(tty)) { | |
748 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e | 749 | status = mos7720_write(tty, port, &stop_char, 1); |
0f64478c GKH |
750 | if (status <= 0) |
751 | return; | |
752 | } | |
753 | ||
754 | /* if we are implementing RTS/CTS, toggle that line */ | |
755 | if (tty->termios->c_cflag & CRTSCTS) { | |
756 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; | |
757 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
758 | port->number - port->serial->minor, | |
759 | UART_MCR, &mos7720_port->shadowMCR); | |
760 | if (status != 0) | |
761 | return; | |
762 | } | |
763 | } | |
764 | ||
95da310e | 765 | static void mos7720_unthrottle(struct tty_struct *tty) |
0f64478c | 766 | { |
95da310e | 767 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 768 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
95da310e | 769 | int status; |
0f64478c GKH |
770 | |
771 | if (mos7720_port == NULL) | |
772 | return; | |
773 | ||
774 | if (!mos7720_port->open) { | |
441b62c1 | 775 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
776 | return; |
777 | } | |
778 | ||
441b62c1 | 779 | dbg("%s: Entering ..........", __func__); |
0f64478c | 780 | |
0f64478c GKH |
781 | /* if we are implementing XON/XOFF, send the start character */ |
782 | if (I_IXOFF(tty)) { | |
783 | unsigned char start_char = START_CHAR(tty); | |
95da310e | 784 | status = mos7720_write(tty, port, &start_char, 1); |
0f64478c GKH |
785 | if (status <= 0) |
786 | return; | |
787 | } | |
788 | ||
789 | /* if we are implementing RTS/CTS, toggle that line */ | |
790 | if (tty->termios->c_cflag & CRTSCTS) { | |
791 | mos7720_port->shadowMCR |= UART_MCR_RTS; | |
792 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
793 | port->number - port->serial->minor, | |
794 | UART_MCR, &mos7720_port->shadowMCR); | |
795 | if (status != 0) | |
796 | return; | |
797 | } | |
798 | } | |
799 | ||
800 | static int set_higher_rates(struct moschip_port *mos7720_port, | |
801 | unsigned int baud) | |
802 | { | |
803 | unsigned char data; | |
804 | struct usb_serial_port *port; | |
805 | struct usb_serial *serial; | |
806 | int port_number; | |
807 | ||
808 | if (mos7720_port == NULL) | |
809 | return -EINVAL; | |
810 | ||
811 | port = mos7720_port->port; | |
812 | serial = port->serial; | |
813 | ||
4da1a17d AC |
814 | /*********************************************** |
815 | * Init Sequence for higher rates | |
816 | ***********************************************/ | |
0f64478c GKH |
817 | dbg("Sending Setting Commands .........."); |
818 | port_number = port->number - port->serial->minor; | |
819 | ||
820 | data = 0x000; | |
821 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
822 | data = 0x000; | |
823 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
824 | data = 0x0CF; | |
825 | send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); | |
826 | data = 0x00b; | |
4da1a17d | 827 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
828 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
829 | data = 0x00b; | |
830 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
831 | ||
832 | data = 0x000; | |
833 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
834 | data = 0x000; | |
835 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
836 | ||
837 | ||
4da1a17d AC |
838 | /*********************************************** |
839 | * Set for higher rates * | |
840 | ***********************************************/ | |
0f64478c GKH |
841 | |
842 | data = baud * 0x10; | |
4da1a17d | 843 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
0f64478c GKH |
844 | |
845 | data = 0x003; | |
846 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
847 | data = 0x003; | |
848 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
849 | ||
850 | data = 0x02b; | |
4da1a17d | 851 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
852 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
853 | data = 0x02b; | |
854 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
855 | ||
4da1a17d AC |
856 | /*********************************************** |
857 | * Set DLL/DLM | |
858 | ***********************************************/ | |
0f64478c GKH |
859 | |
860 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
4da1a17d | 861 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
862 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
863 | ||
864 | data = 0x001; /* DLL */ | |
4da1a17d | 865 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
0f64478c | 866 | data = 0x000; /* DLM */ |
4da1a17d | 867 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
0f64478c GKH |
868 | |
869 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
4da1a17d | 870 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
871 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
872 | ||
873 | return 0; | |
874 | } | |
875 | ||
876 | /* baud rate information */ | |
4da1a17d | 877 | struct divisor_table_entry { |
0f64478c GKH |
878 | __u32 baudrate; |
879 | __u16 divisor; | |
880 | }; | |
881 | ||
882 | /* Define table of divisors for moschip 7720 hardware * | |
883 | * These assume a 3.6864MHz crystal, the standard /16, and * | |
884 | * MCR.7 = 0. */ | |
885 | static struct divisor_table_entry divisor_table[] = { | |
886 | { 50, 2304}, | |
887 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ | |
888 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ | |
889 | { 150, 768}, | |
890 | { 300, 384}, | |
891 | { 600, 192}, | |
892 | { 1200, 96}, | |
893 | { 1800, 64}, | |
894 | { 2400, 48}, | |
895 | { 4800, 24}, | |
896 | { 7200, 16}, | |
897 | { 9600, 12}, | |
898 | { 19200, 6}, | |
899 | { 38400, 3}, | |
900 | { 57600, 2}, | |
901 | { 115200, 1}, | |
902 | }; | |
903 | ||
904 | /***************************************************************************** | |
905 | * calc_baud_rate_divisor | |
906 | * this function calculates the proper baud rate divisor for the specified | |
907 | * baud rate. | |
908 | *****************************************************************************/ | |
909 | static int calc_baud_rate_divisor(int baudrate, int *divisor) | |
910 | { | |
911 | int i; | |
912 | __u16 custom; | |
913 | __u16 round1; | |
914 | __u16 round; | |
915 | ||
916 | ||
441b62c1 | 917 | dbg("%s - %d", __func__, baudrate); |
0f64478c GKH |
918 | |
919 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { | |
920 | if (divisor_table[i].baudrate == baudrate) { | |
921 | *divisor = divisor_table[i].divisor; | |
922 | return 0; | |
923 | } | |
924 | } | |
925 | ||
4da1a17d AC |
926 | /* After trying for all the standard baud rates * |
927 | * Try calculating the divisor for this baud rate */ | |
0f64478c GKH |
928 | if (baudrate > 75 && baudrate < 230400) { |
929 | /* get the divisor */ | |
930 | custom = (__u16)(230400L / baudrate); | |
931 | ||
932 | /* Check for round off */ | |
933 | round1 = (__u16)(2304000L / baudrate); | |
934 | round = (__u16)(round1 - (custom * 10)); | |
935 | if (round > 4) | |
936 | custom++; | |
937 | *divisor = custom; | |
938 | ||
4da1a17d | 939 | dbg("Baud %d = %d", baudrate, custom); |
0f64478c GKH |
940 | return 0; |
941 | } | |
942 | ||
943 | dbg("Baud calculation Failed..."); | |
944 | return -EINVAL; | |
945 | } | |
946 | ||
947 | /* | |
948 | * send_cmd_write_baud_rate | |
949 | * this function sends the proper command to change the baud rate of the | |
950 | * specified port. | |
951 | */ | |
952 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, | |
953 | int baudrate) | |
954 | { | |
955 | struct usb_serial_port *port; | |
956 | struct usb_serial *serial; | |
957 | int divisor; | |
958 | int status; | |
959 | unsigned char data; | |
960 | unsigned char number; | |
961 | ||
962 | if (mos7720_port == NULL) | |
963 | return -1; | |
964 | ||
965 | port = mos7720_port->port; | |
966 | serial = port->serial; | |
967 | ||
441b62c1 | 968 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
969 | |
970 | number = port->number - port->serial->minor; | |
441b62c1 | 971 | dbg("%s - port = %d, baud = %d", __func__, port->number, baudrate); |
0f64478c | 972 | |
4da1a17d | 973 | /* Calculate the Divisor */ |
0f64478c GKH |
974 | status = calc_baud_rate_divisor(baudrate, &divisor); |
975 | if (status) { | |
441b62c1 | 976 | err("%s - bad baud rate", __func__); |
0f64478c GKH |
977 | return status; |
978 | } | |
979 | ||
4da1a17d AC |
980 | /* Enable access to divisor latch */ |
981 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
982 | mos7720_port->shadowLCR = data; | |
983 | send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); | |
0f64478c GKH |
984 | |
985 | /* Write the divisor */ | |
986 | data = ((unsigned char)(divisor & 0xff)); | |
4da1a17d | 987 | send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); |
0f64478c GKH |
988 | |
989 | data = ((unsigned char)((divisor & 0xff00) >> 8)); | |
4da1a17d | 990 | send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); |
0f64478c | 991 | |
4da1a17d AC |
992 | /* Disable access to divisor latch */ |
993 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
994 | mos7720_port->shadowLCR = data; | |
995 | send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); | |
0f64478c GKH |
996 | |
997 | return status; | |
998 | } | |
999 | ||
1000 | /* | |
1001 | * change_port_settings | |
1002 | * This routine is called to set the UART on the device to match | |
1003 | * the specified new settings. | |
1004 | */ | |
95da310e AC |
1005 | static void change_port_settings(struct tty_struct *tty, |
1006 | struct moschip_port *mos7720_port, | |
606d099c | 1007 | struct ktermios *old_termios) |
0f64478c GKH |
1008 | { |
1009 | struct usb_serial_port *port; | |
1010 | struct usb_serial *serial; | |
0f64478c GKH |
1011 | int baud; |
1012 | unsigned cflag; | |
1013 | unsigned iflag; | |
1014 | __u8 mask = 0xff; | |
1015 | __u8 lData; | |
1016 | __u8 lParity; | |
1017 | __u8 lStop; | |
1018 | int status; | |
1019 | int port_number; | |
1020 | char data; | |
1021 | ||
1022 | if (mos7720_port == NULL) | |
1023 | return ; | |
1024 | ||
1025 | port = mos7720_port->port; | |
1026 | serial = port->serial; | |
1027 | port_number = port->number - port->serial->minor; | |
1028 | ||
441b62c1 | 1029 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1030 | |
1031 | if (!mos7720_port->open) { | |
441b62c1 | 1032 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1033 | return; |
1034 | } | |
1035 | ||
441b62c1 | 1036 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1037 | |
1038 | lData = UART_LCR_WLEN8; | |
1039 | lStop = 0x00; /* 1 stop bit */ | |
1040 | lParity = 0x00; /* No parity */ | |
1041 | ||
1042 | cflag = tty->termios->c_cflag; | |
1043 | iflag = tty->termios->c_iflag; | |
1044 | ||
1045 | /* Change the number of bits */ | |
1046 | switch (cflag & CSIZE) { | |
1047 | case CS5: | |
1048 | lData = UART_LCR_WLEN5; | |
1049 | mask = 0x1f; | |
1050 | break; | |
1051 | ||
1052 | case CS6: | |
1053 | lData = UART_LCR_WLEN6; | |
1054 | mask = 0x3f; | |
1055 | break; | |
1056 | ||
1057 | case CS7: | |
1058 | lData = UART_LCR_WLEN7; | |
1059 | mask = 0x7f; | |
1060 | break; | |
1061 | default: | |
1062 | case CS8: | |
1063 | lData = UART_LCR_WLEN8; | |
1064 | break; | |
1065 | } | |
1066 | ||
1067 | /* Change the Parity bit */ | |
1068 | if (cflag & PARENB) { | |
1069 | if (cflag & PARODD) { | |
1070 | lParity = UART_LCR_PARITY; | |
441b62c1 | 1071 | dbg("%s - parity = odd", __func__); |
0f64478c GKH |
1072 | } else { |
1073 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); | |
441b62c1 | 1074 | dbg("%s - parity = even", __func__); |
0f64478c GKH |
1075 | } |
1076 | ||
1077 | } else { | |
441b62c1 | 1078 | dbg("%s - parity = none", __func__); |
0f64478c GKH |
1079 | } |
1080 | ||
1081 | if (cflag & CMSPAR) | |
1082 | lParity = lParity | 0x20; | |
1083 | ||
1084 | /* Change the Stop bit */ | |
1085 | if (cflag & CSTOPB) { | |
1086 | lStop = UART_LCR_STOP; | |
441b62c1 | 1087 | dbg("%s - stop bits = 2", __func__); |
0f64478c GKH |
1088 | } else { |
1089 | lStop = 0x00; | |
441b62c1 | 1090 | dbg("%s - stop bits = 1", __func__); |
0f64478c GKH |
1091 | } |
1092 | ||
1093 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
1094 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
1095 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
1096 | ||
1097 | /* Update the LCR with the correct value */ | |
4da1a17d AC |
1098 | mos7720_port->shadowLCR &= |
1099 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
0f64478c GKH |
1100 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
1101 | ||
1102 | ||
1103 | /* Disable Interrupts */ | |
1104 | data = 0x00; | |
4da1a17d AC |
1105 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
1106 | UART_IER, &data); | |
0f64478c GKH |
1107 | |
1108 | data = 0x00; | |
4da1a17d | 1109 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1110 | |
1111 | data = 0xcf; | |
4da1a17d | 1112 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1113 | |
1114 | /* Send the updated LCR value to the mos7720 */ | |
1115 | data = mos7720_port->shadowLCR; | |
4da1a17d | 1116 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); |
0f64478c | 1117 | |
4da1a17d AC |
1118 | data = 0x00b; |
1119 | mos7720_port->shadowMCR = data; | |
1120 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
1121 | data = 0x00b; | |
1122 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
0f64478c GKH |
1123 | |
1124 | /* set up the MCR register and send it to the mos7720 */ | |
1125 | mos7720_port->shadowMCR = UART_MCR_OUT2; | |
1126 | if (cflag & CBAUD) | |
1127 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); | |
1128 | ||
1129 | if (cflag & CRTSCTS) { | |
1130 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); | |
4da1a17d AC |
1131 | /* To set hardware flow control to the specified * |
1132 | * serial port, in SP1/2_CONTROL_REG */ | |
0f64478c GKH |
1133 | if (port->number) { |
1134 | data = 0x001; | |
1135 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1136 | 0x08, &data); | |
1137 | } else { | |
1138 | data = 0x002; | |
1139 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1140 | 0x08, &data); | |
1141 | } | |
1142 | } else { | |
1143 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); | |
1144 | } | |
1145 | ||
1146 | data = mos7720_port->shadowMCR; | |
1147 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); | |
1148 | ||
1149 | /* Determine divisor based on baud rate */ | |
1150 | baud = tty_get_baud_rate(tty); | |
1151 | if (!baud) { | |
1152 | /* pick a default, any default... */ | |
1153 | dbg("Picked default baud..."); | |
1154 | baud = 9600; | |
1155 | } | |
1156 | ||
1157 | if (baud >= 230400) { | |
1158 | set_higher_rates(mos7720_port, baud); | |
1159 | /* Enable Interrupts */ | |
1160 | data = 0x0c; | |
1161 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1162 | return; | |
1163 | } | |
1164 | ||
441b62c1 | 1165 | dbg("%s - baud rate = %d", __func__, baud); |
0f64478c | 1166 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
65d063ab AC |
1167 | /* FIXME: needs to write actual resulting baud back not just |
1168 | blindly do so */ | |
1169 | if (cflag & CBAUD) | |
1170 | tty_encode_baud_rate(tty, baud, baud); | |
0f64478c GKH |
1171 | /* Enable Interrupts */ |
1172 | data = 0x0c; | |
1173 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1174 | ||
1175 | if (port->read_urb->status != -EINPROGRESS) { | |
1176 | port->read_urb->dev = serial->dev; | |
1177 | ||
1178 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1179 | if (status) | |
1180 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1181 | status); | |
1182 | } | |
1183 | return; | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * mos7720_set_termios | |
1188 | * this function is called by the tty driver when it wants to change the | |
1189 | * termios structure. | |
1190 | */ | |
95da310e AC |
1191 | static void mos7720_set_termios(struct tty_struct *tty, |
1192 | struct usb_serial_port *port, struct ktermios *old_termios) | |
0f64478c GKH |
1193 | { |
1194 | int status; | |
1195 | unsigned int cflag; | |
1196 | struct usb_serial *serial; | |
1197 | struct moschip_port *mos7720_port; | |
0f64478c GKH |
1198 | |
1199 | serial = port->serial; | |
1200 | ||
1201 | mos7720_port = usb_get_serial_port_data(port); | |
1202 | ||
1203 | if (mos7720_port == NULL) | |
1204 | return; | |
1205 | ||
0f64478c | 1206 | if (!mos7720_port->open) { |
441b62c1 | 1207 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1208 | return; |
1209 | } | |
1210 | ||
4da1a17d | 1211 | dbg("%s\n", "setting termios - ASPIRE"); |
0f64478c GKH |
1212 | |
1213 | cflag = tty->termios->c_cflag; | |
1214 | ||
441b62c1 | 1215 | dbg("%s - cflag %08x iflag %08x", __func__, |
0f64478c GKH |
1216 | tty->termios->c_cflag, |
1217 | RELEVANT_IFLAG(tty->termios->c_iflag)); | |
1218 | ||
441b62c1 | 1219 | dbg("%s - old cflag %08x old iflag %08x", __func__, |
65d063ab AC |
1220 | old_termios->c_cflag, |
1221 | RELEVANT_IFLAG(old_termios->c_iflag)); | |
0f64478c | 1222 | |
441b62c1 | 1223 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1224 | |
1225 | /* change the port settings to the new ones specified */ | |
95da310e | 1226 | change_port_settings(tty, mos7720_port, old_termios); |
0f64478c | 1227 | |
4da1a17d AC |
1228 | if (!port->read_urb) { |
1229 | dbg("%s", "URB KILLED !!!!!\n"); | |
0f64478c GKH |
1230 | return; |
1231 | } | |
1232 | ||
4da1a17d | 1233 | if (port->read_urb->status != -EINPROGRESS) { |
0f64478c GKH |
1234 | port->read_urb->dev = serial->dev; |
1235 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1236 | if (status) | |
1237 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1238 | status); | |
1239 | } | |
1240 | return; | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * get_lsr_info - get line status register info | |
1245 | * | |
1246 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1247 | * is emptied. On bus types like RS485, the transmitter must | |
1248 | * release the bus after transmitting. This must be done when | |
1249 | * the transmit shift register is empty, not be done when the | |
1250 | * transmit holding register is empty. This functionality | |
1251 | * allows an RS485 driver to be written in user space. | |
1252 | */ | |
4da1a17d AC |
1253 | static int get_lsr_info(struct tty_struct *tty, |
1254 | struct moschip_port *mos7720_port, unsigned int __user *value) | |
0f64478c GKH |
1255 | { |
1256 | int count; | |
1257 | unsigned int result = 0; | |
1258 | ||
95da310e | 1259 | count = mos7720_chars_in_buffer(tty); |
0f64478c | 1260 | if (count == 0) { |
441b62c1 | 1261 | dbg("%s -- Empty", __func__); |
0f64478c GKH |
1262 | result = TIOCSER_TEMT; |
1263 | } | |
1264 | ||
1265 | if (copy_to_user(value, &result, sizeof(int))) | |
1266 | return -EFAULT; | |
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | /* | |
1271 | * get_number_bytes_avail - get number of bytes available | |
1272 | * | |
1273 | * Purpose: Let user call ioctl to get the count of number of bytes available. | |
1274 | */ | |
1275 | static int get_number_bytes_avail(struct moschip_port *mos7720_port, | |
1276 | unsigned int __user *value) | |
1277 | { | |
1278 | unsigned int result = 0; | |
95da310e | 1279 | struct tty_struct *tty = mos7720_port->port->port.tty; |
0f64478c GKH |
1280 | |
1281 | if (!tty) | |
1282 | return -ENOIOCTLCMD; | |
1283 | ||
1284 | result = tty->read_cnt; | |
1285 | ||
441b62c1 | 1286 | dbg("%s(%d) = %d", __func__, mos7720_port->port->number, result); |
0f64478c GKH |
1287 | if (copy_to_user(value, &result, sizeof(int))) |
1288 | return -EFAULT; | |
1289 | ||
1290 | return -ENOIOCTLCMD; | |
1291 | } | |
1292 | ||
1293 | static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, | |
1294 | unsigned int __user *value) | |
1295 | { | |
1296 | unsigned int mcr ; | |
1297 | unsigned int arg; | |
1298 | unsigned char data; | |
1299 | ||
1300 | struct usb_serial_port *port; | |
1301 | ||
1302 | if (mos7720_port == NULL) | |
1303 | return -1; | |
1304 | ||
4da1a17d | 1305 | port = (struct usb_serial_port *)mos7720_port->port; |
0f64478c GKH |
1306 | mcr = mos7720_port->shadowMCR; |
1307 | ||
1308 | if (copy_from_user(&arg, value, sizeof(int))) | |
1309 | return -EFAULT; | |
1310 | ||
1311 | switch (cmd) { | |
1312 | case TIOCMBIS: | |
1313 | if (arg & TIOCM_RTS) | |
1314 | mcr |= UART_MCR_RTS; | |
1315 | if (arg & TIOCM_DTR) | |
1316 | mcr |= UART_MCR_RTS; | |
1317 | if (arg & TIOCM_LOOP) | |
1318 | mcr |= UART_MCR_LOOP; | |
1319 | break; | |
1320 | ||
1321 | case TIOCMBIC: | |
1322 | if (arg & TIOCM_RTS) | |
1323 | mcr &= ~UART_MCR_RTS; | |
1324 | if (arg & TIOCM_DTR) | |
1325 | mcr &= ~UART_MCR_RTS; | |
1326 | if (arg & TIOCM_LOOP) | |
1327 | mcr &= ~UART_MCR_LOOP; | |
1328 | break; | |
1329 | ||
1330 | case TIOCMSET: | |
1331 | /* turn off the RTS and DTR and LOOPBACK | |
1332 | * and then only turn on what was asked to */ | |
1333 | mcr &= ~(UART_MCR_RTS | UART_MCR_DTR | UART_MCR_LOOP); | |
1334 | mcr |= ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0); | |
1335 | mcr |= ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0); | |
1336 | mcr |= ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0); | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | mos7720_port->shadowMCR = mcr; | |
1341 | ||
1342 | data = mos7720_port->shadowMCR; | |
1343 | send_mos_cmd(port->serial, MOS_WRITE, | |
1344 | port->number - port->serial->minor, UART_MCR, &data); | |
1345 | ||
1346 | return 0; | |
1347 | } | |
1348 | ||
1349 | static int get_modem_info(struct moschip_port *mos7720_port, | |
1350 | unsigned int __user *value) | |
1351 | { | |
1352 | unsigned int result = 0; | |
1353 | unsigned int msr = mos7720_port->shadowMSR; | |
1354 | unsigned int mcr = mos7720_port->shadowMCR; | |
1355 | ||
1356 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ | |
1357 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ | |
1358 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ | |
1359 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR: 0) /* 0x040 */ | |
1360 | | ((msr & UART_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ | |
1361 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ | |
1362 | ||
1363 | ||
441b62c1 | 1364 | dbg("%s -- %x", __func__, result); |
0f64478c GKH |
1365 | |
1366 | if (copy_to_user(value, &result, sizeof(int))) | |
1367 | return -EFAULT; | |
1368 | return 0; | |
1369 | } | |
1370 | ||
1371 | static int get_serial_info(struct moschip_port *mos7720_port, | |
1372 | struct serial_struct __user *retinfo) | |
1373 | { | |
1374 | struct serial_struct tmp; | |
1375 | ||
1376 | if (!retinfo) | |
1377 | return -EFAULT; | |
1378 | ||
1379 | memset(&tmp, 0, sizeof(tmp)); | |
1380 | ||
1381 | tmp.type = PORT_16550A; | |
1382 | tmp.line = mos7720_port->port->serial->minor; | |
1383 | tmp.port = mos7720_port->port->number; | |
1384 | tmp.irq = 0; | |
1385 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
4da1a17d | 1386 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
0f64478c GKH |
1387 | tmp.baud_base = 9600; |
1388 | tmp.close_delay = 5*HZ; | |
1389 | tmp.closing_wait = 30*HZ; | |
1390 | ||
1391 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1392 | return -EFAULT; | |
1393 | return 0; | |
1394 | } | |
1395 | ||
95da310e | 1396 | static int mos7720_ioctl(struct tty_struct *tty, struct file *file, |
0f64478c GKH |
1397 | unsigned int cmd, unsigned long arg) |
1398 | { | |
95da310e | 1399 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1400 | struct moschip_port *mos7720_port; |
1401 | struct async_icount cnow; | |
1402 | struct async_icount cprev; | |
1403 | struct serial_icounter_struct icount; | |
1404 | ||
1405 | mos7720_port = usb_get_serial_port_data(port); | |
1406 | if (mos7720_port == NULL) | |
1407 | return -ENODEV; | |
1408 | ||
441b62c1 | 1409 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
0f64478c GKH |
1410 | |
1411 | switch (cmd) { | |
1412 | case TIOCINQ: | |
1413 | /* return number of bytes available */ | |
441b62c1 | 1414 | dbg("%s (%d) TIOCINQ", __func__, port->number); |
0f64478c GKH |
1415 | return get_number_bytes_avail(mos7720_port, |
1416 | (unsigned int __user *)arg); | |
1417 | break; | |
1418 | ||
1419 | case TIOCSERGETLSR: | |
441b62c1 | 1420 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
4da1a17d AC |
1421 | return get_lsr_info(tty, mos7720_port, |
1422 | (unsigned int __user *)arg); | |
0f64478c GKH |
1423 | return 0; |
1424 | ||
95da310e | 1425 | /* FIXME: These should be using the mode methods */ |
0f64478c GKH |
1426 | case TIOCMBIS: |
1427 | case TIOCMBIC: | |
1428 | case TIOCMSET: | |
4da1a17d AC |
1429 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", |
1430 | __func__, port->number); | |
0f64478c GKH |
1431 | return set_modem_info(mos7720_port, cmd, |
1432 | (unsigned int __user *)arg); | |
1433 | ||
1434 | case TIOCMGET: | |
441b62c1 | 1435 | dbg("%s (%d) TIOCMGET", __func__, port->number); |
0f64478c GKH |
1436 | return get_modem_info(mos7720_port, |
1437 | (unsigned int __user *)arg); | |
1438 | ||
1439 | case TIOCGSERIAL: | |
441b62c1 | 1440 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
0f64478c GKH |
1441 | return get_serial_info(mos7720_port, |
1442 | (struct serial_struct __user *)arg); | |
1443 | ||
0f64478c | 1444 | case TIOCMIWAIT: |
441b62c1 | 1445 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
0f64478c GKH |
1446 | cprev = mos7720_port->icount; |
1447 | while (1) { | |
1448 | if (signal_pending(current)) | |
1449 | return -ERESTARTSYS; | |
1450 | cnow = mos7720_port->icount; | |
1451 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1452 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1453 | return -EIO; /* no change => error */ | |
1454 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1455 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1456 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4da1a17d | 1457 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
0f64478c GKH |
1458 | return 0; |
1459 | } | |
1460 | cprev = cnow; | |
1461 | } | |
1462 | /* NOTREACHED */ | |
1463 | break; | |
1464 | ||
1465 | case TIOCGICOUNT: | |
1466 | cnow = mos7720_port->icount; | |
1467 | icount.cts = cnow.cts; | |
1468 | icount.dsr = cnow.dsr; | |
1469 | icount.rng = cnow.rng; | |
1470 | icount.dcd = cnow.dcd; | |
1471 | icount.rx = cnow.rx; | |
1472 | icount.tx = cnow.tx; | |
1473 | icount.frame = cnow.frame; | |
1474 | icount.overrun = cnow.overrun; | |
1475 | icount.parity = cnow.parity; | |
1476 | icount.brk = cnow.brk; | |
1477 | icount.buf_overrun = cnow.buf_overrun; | |
1478 | ||
441b62c1 | 1479 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
4da1a17d | 1480 | port->number, icount.rx, icount.tx); |
0f64478c GKH |
1481 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
1482 | return -EFAULT; | |
1483 | return 0; | |
1484 | } | |
1485 | ||
1486 | return -ENOIOCTLCMD; | |
1487 | } | |
1488 | ||
1489 | static int mos7720_startup(struct usb_serial *serial) | |
1490 | { | |
1491 | struct moschip_serial *mos7720_serial; | |
1492 | struct moschip_port *mos7720_port; | |
1493 | struct usb_device *dev; | |
1494 | int i; | |
1495 | char data; | |
1496 | ||
441b62c1 | 1497 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1498 | |
1499 | if (!serial) { | |
1500 | dbg("Invalid Handler"); | |
1501 | return -ENODEV; | |
1502 | } | |
1503 | ||
1504 | dev = serial->dev; | |
1505 | ||
1506 | /* create our private serial structure */ | |
1507 | mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); | |
1508 | if (mos7720_serial == NULL) { | |
441b62c1 | 1509 | err("%s - Out of memory", __func__); |
0f64478c GKH |
1510 | return -ENOMEM; |
1511 | } | |
1512 | ||
1513 | usb_set_serial_data(serial, mos7720_serial); | |
1514 | ||
1515 | /* we set up the pointers to the endpoints in the mos7720_open * | |
1516 | * function, as the structures aren't created yet. */ | |
1517 | ||
1518 | /* set up port private structures */ | |
1519 | for (i = 0; i < serial->num_ports; ++i) { | |
1520 | mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
1521 | if (mos7720_port == NULL) { | |
441b62c1 | 1522 | err("%s - Out of memory", __func__); |
0f64478c GKH |
1523 | usb_set_serial_data(serial, NULL); |
1524 | kfree(mos7720_serial); | |
1525 | return -ENOMEM; | |
1526 | } | |
1527 | ||
1528 | /* Initialize all port interrupt end point to port 0 int | |
1529 | * endpoint. Our device has only one interrupt endpoint | |
1530 | * comman to all ports */ | |
4da1a17d AC |
1531 | serial->port[i]->interrupt_in_endpointAddress = |
1532 | serial->port[0]->interrupt_in_endpointAddress; | |
0f64478c GKH |
1533 | |
1534 | mos7720_port->port = serial->port[i]; | |
1535 | usb_set_serial_port_data(serial->port[i], mos7720_port); | |
1536 | ||
1537 | dbg("port number is %d", serial->port[i]->number); | |
1538 | dbg("serial number is %d", serial->minor); | |
1539 | } | |
1540 | ||
1541 | ||
1542 | /* setting configuration feature to one */ | |
1543 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
4da1a17d | 1544 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); |
0f64478c | 1545 | |
4da1a17d AC |
1546 | /* LSR For Port 1 */ |
1547 | send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); | |
1548 | dbg("LSR:%x", data); | |
0f64478c | 1549 | |
4da1a17d AC |
1550 | /* LSR For Port 2 */ |
1551 | send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); | |
1552 | dbg("LSR:%x", data); | |
0f64478c GKH |
1553 | |
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | static void mos7720_shutdown(struct usb_serial *serial) | |
1558 | { | |
1559 | int i; | |
1560 | ||
1561 | /* free private structure allocated for serial port */ | |
4da1a17d | 1562 | for (i = 0; i < serial->num_ports; ++i) { |
0f64478c GKH |
1563 | kfree(usb_get_serial_port_data(serial->port[i])); |
1564 | usb_set_serial_port_data(serial->port[i], NULL); | |
1565 | } | |
1566 | ||
1567 | /* free private structure allocated for serial device */ | |
1568 | kfree(usb_get_serial_data(serial)); | |
1569 | usb_set_serial_data(serial, NULL); | |
1570 | } | |
1571 | ||
d9b1b787 JH |
1572 | static struct usb_driver usb_driver = { |
1573 | .name = "moschip7720", | |
1574 | .probe = usb_serial_probe, | |
1575 | .disconnect = usb_serial_disconnect, | |
1576 | .id_table = moschip_port_id_table, | |
1577 | .no_dynamic_id = 1, | |
1578 | }; | |
1579 | ||
0f64478c GKH |
1580 | static struct usb_serial_driver moschip7720_2port_driver = { |
1581 | .driver = { | |
1582 | .owner = THIS_MODULE, | |
1583 | .name = "moschip7720", | |
1584 | }, | |
1585 | .description = "Moschip 2 port adapter", | |
d9b1b787 | 1586 | .usb_driver = &usb_driver, |
0f64478c | 1587 | .id_table = moschip_port_id_table, |
0f64478c GKH |
1588 | .num_ports = 2, |
1589 | .open = mos7720_open, | |
1590 | .close = mos7720_close, | |
1591 | .throttle = mos7720_throttle, | |
1592 | .unthrottle = mos7720_unthrottle, | |
1593 | .attach = mos7720_startup, | |
1594 | .shutdown = mos7720_shutdown, | |
1595 | .ioctl = mos7720_ioctl, | |
1596 | .set_termios = mos7720_set_termios, | |
1597 | .write = mos7720_write, | |
1598 | .write_room = mos7720_write_room, | |
1599 | .chars_in_buffer = mos7720_chars_in_buffer, | |
1600 | .break_ctl = mos7720_break, | |
1601 | .read_bulk_callback = mos7720_bulk_in_callback, | |
e8e30c76 | 1602 | .read_int_callback = mos7720_interrupt_callback, |
0f64478c GKH |
1603 | }; |
1604 | ||
0f64478c GKH |
1605 | static int __init moschip7720_init(void) |
1606 | { | |
1607 | int retval; | |
1608 | ||
441b62c1 | 1609 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1610 | |
1611 | /* Register with the usb serial */ | |
1612 | retval = usb_serial_register(&moschip7720_2port_driver); | |
1613 | if (retval) | |
1614 | goto failed_port_device_register; | |
1615 | ||
1616 | info(DRIVER_DESC " " DRIVER_VERSION); | |
1617 | ||
1618 | /* Register with the usb */ | |
1619 | retval = usb_register(&usb_driver); | |
1620 | if (retval) | |
1621 | goto failed_usb_register; | |
1622 | ||
1623 | return 0; | |
1624 | ||
1625 | failed_usb_register: | |
1626 | usb_serial_deregister(&moschip7720_2port_driver); | |
1627 | ||
1628 | failed_port_device_register: | |
1629 | return retval; | |
1630 | } | |
1631 | ||
1632 | static void __exit moschip7720_exit(void) | |
1633 | { | |
1634 | usb_deregister(&usb_driver); | |
1635 | usb_serial_deregister(&moschip7720_2port_driver); | |
1636 | } | |
1637 | ||
1638 | module_init(moschip7720_init); | |
1639 | module_exit(moschip7720_exit); | |
1640 | ||
1641 | /* Module information */ | |
4da1a17d AC |
1642 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1643 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0f64478c GKH |
1644 | MODULE_LICENSE("GPL"); |
1645 | ||
1646 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1647 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |