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Commit | Line | Data |
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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 | ||
fb088e33 MD |
84 | static struct usb_serial_driver moschip7720_2port_driver; |
85 | ||
0f64478c GKH |
86 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
87 | #define MOSCHIP_DEVICE_ID_7720 0x7720 | |
88 | #define MOSCHIP_DEVICE_ID_7715 0x7715 | |
89 | ||
7d40d7e8 | 90 | static const struct usb_device_id moschip_port_id_table[] = { |
4da1a17d | 91 | { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7720) }, |
fb088e33 | 92 | { USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7715) }, |
0f64478c GKH |
93 | { } /* terminating entry */ |
94 | }; | |
95 | MODULE_DEVICE_TABLE(usb, moschip_port_id_table); | |
96 | ||
97 | ||
98 | /* | |
99 | * mos7720_interrupt_callback | |
100 | * this is the callback function for when we have received data on the | |
101 | * interrupt endpoint. | |
102 | */ | |
103 | static void mos7720_interrupt_callback(struct urb *urb) | |
104 | { | |
105 | int result; | |
106 | int length; | |
81105984 | 107 | int status = urb->status; |
325b70c2 | 108 | __u8 *data; |
0f64478c GKH |
109 | __u8 sp1; |
110 | __u8 sp2; | |
0f64478c | 111 | |
759f3634 | 112 | dbg(" : Entering"); |
0f64478c | 113 | |
81105984 | 114 | switch (status) { |
0f64478c GKH |
115 | case 0: |
116 | /* success */ | |
117 | break; | |
118 | case -ECONNRESET: | |
119 | case -ENOENT: | |
120 | case -ESHUTDOWN: | |
121 | /* this urb is terminated, clean up */ | |
441b62c1 | 122 | dbg("%s - urb shutting down with status: %d", __func__, |
81105984 | 123 | status); |
0f64478c GKH |
124 | return; |
125 | default: | |
441b62c1 | 126 | dbg("%s - nonzero urb status received: %d", __func__, |
81105984 | 127 | status); |
0f64478c GKH |
128 | goto exit; |
129 | } | |
130 | ||
131 | length = urb->actual_length; | |
132 | data = urb->transfer_buffer; | |
133 | ||
134 | /* Moschip get 4 bytes | |
135 | * Byte 1 IIR Port 1 (port.number is 0) | |
136 | * Byte 2 IIR Port 2 (port.number is 1) | |
137 | * Byte 3 -------------- | |
138 | * Byte 4 FIFO status for both */ | |
325b70c2 ON |
139 | |
140 | /* the above description is inverted | |
141 | * oneukum 2007-03-14 */ | |
142 | ||
143 | if (unlikely(length != 4)) { | |
0f64478c GKH |
144 | dbg("Wrong data !!!"); |
145 | return; | |
146 | } | |
147 | ||
325b70c2 ON |
148 | sp1 = data[3]; |
149 | sp2 = data[2]; | |
0f64478c | 150 | |
325b70c2 | 151 | if ((sp1 | sp2) & 0x01) { |
0f64478c GKH |
152 | /* No Interrupt Pending in both the ports */ |
153 | dbg("No Interrupt !!!"); | |
154 | } else { | |
155 | switch (sp1 & 0x0f) { | |
156 | case SERIAL_IIR_RLS: | |
157 | dbg("Serial Port 1: Receiver status error or address " | |
158 | "bit detected in 9-bit mode\n"); | |
159 | break; | |
160 | case SERIAL_IIR_CTI: | |
161 | dbg("Serial Port 1: Receiver time out"); | |
162 | break; | |
163 | case SERIAL_IIR_MS: | |
164 | dbg("Serial Port 1: Modem status change"); | |
165 | break; | |
166 | } | |
167 | ||
168 | switch (sp2 & 0x0f) { | |
169 | case SERIAL_IIR_RLS: | |
170 | dbg("Serial Port 2: Receiver status error or address " | |
171 | "bit detected in 9-bit mode"); | |
172 | break; | |
173 | case SERIAL_IIR_CTI: | |
174 | dbg("Serial Port 2: Receiver time out"); | |
175 | break; | |
176 | case SERIAL_IIR_MS: | |
177 | dbg("Serial Port 2: Modem status change"); | |
178 | break; | |
179 | } | |
180 | } | |
181 | ||
182 | exit: | |
183 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
184 | if (result) | |
185 | dev_err(&urb->dev->dev, | |
186 | "%s - Error %d submitting control urb\n", | |
441b62c1 | 187 | __func__, result); |
0f64478c GKH |
188 | return; |
189 | } | |
190 | ||
fb088e33 MD |
191 | /* |
192 | * mos7715_interrupt_callback | |
193 | * this is the 7715's callback function for when we have received data on | |
194 | * the interrupt endpoint. | |
195 | */ | |
196 | static void mos7715_interrupt_callback(struct urb *urb) | |
197 | { | |
198 | int result; | |
199 | int length; | |
200 | int status = urb->status; | |
201 | __u8 *data; | |
202 | __u8 iir; | |
203 | ||
204 | switch (status) { | |
205 | case 0: | |
206 | /* success */ | |
207 | break; | |
208 | case -ECONNRESET: | |
209 | case -ENOENT: | |
210 | case -ESHUTDOWN: | |
211 | /* this urb is terminated, clean up */ | |
212 | dbg("%s - urb shutting down with status: %d", __func__, | |
213 | status); | |
214 | return; | |
215 | default: | |
216 | dbg("%s - nonzero urb status received: %d", __func__, | |
217 | status); | |
218 | goto exit; | |
219 | } | |
220 | ||
221 | length = urb->actual_length; | |
222 | data = urb->transfer_buffer; | |
223 | ||
224 | /* Structure of data from 7715 device: | |
225 | * Byte 1: IIR serial Port | |
226 | * Byte 2: unused | |
227 | * Byte 2: DSR parallel port | |
228 | * Byte 4: FIFO status for both */ | |
229 | ||
230 | if (unlikely(length != 4)) { | |
231 | dbg("Wrong data !!!"); | |
232 | return; | |
233 | } | |
234 | ||
235 | iir = data[0]; | |
236 | if (!(iir & 0x01)) { /* serial port interrupt pending */ | |
237 | switch (iir & 0x0f) { | |
238 | case SERIAL_IIR_RLS: | |
239 | dbg("Serial Port: Receiver status error or address " | |
240 | "bit detected in 9-bit mode\n"); | |
241 | break; | |
242 | case SERIAL_IIR_CTI: | |
243 | dbg("Serial Port: Receiver time out"); | |
244 | break; | |
245 | case SERIAL_IIR_MS: | |
246 | dbg("Serial Port: Modem status change"); | |
247 | break; | |
248 | } | |
249 | } | |
250 | ||
251 | exit: | |
252 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
253 | if (result) | |
254 | dev_err(&urb->dev->dev, | |
255 | "%s - Error %d submitting control urb\n", | |
256 | __func__, result); | |
257 | return; | |
258 | } | |
259 | ||
0f64478c GKH |
260 | /* |
261 | * mos7720_bulk_in_callback | |
262 | * this is the callback function for when we have received data on the | |
263 | * bulk in endpoint. | |
264 | */ | |
265 | static void mos7720_bulk_in_callback(struct urb *urb) | |
266 | { | |
81105984 | 267 | int retval; |
0f64478c GKH |
268 | unsigned char *data ; |
269 | struct usb_serial_port *port; | |
270 | struct moschip_port *mos7720_port; | |
271 | struct tty_struct *tty; | |
81105984 | 272 | int status = urb->status; |
0f64478c | 273 | |
81105984 GKH |
274 | if (status) { |
275 | dbg("nonzero read bulk status received: %d", status); | |
0f64478c GKH |
276 | return; |
277 | } | |
278 | ||
279 | mos7720_port = urb->context; | |
280 | if (!mos7720_port) { | |
759f3634 | 281 | dbg("NULL mos7720_port pointer"); |
0f64478c GKH |
282 | return ; |
283 | } | |
284 | ||
285 | port = mos7720_port->port; | |
286 | ||
441b62c1 | 287 | dbg("Entering...%s", __func__); |
0f64478c GKH |
288 | |
289 | data = urb->transfer_buffer; | |
290 | ||
4a90f09b | 291 | tty = tty_port_tty_get(&port->port); |
0f64478c | 292 | if (tty && urb->actual_length) { |
0f64478c GKH |
293 | tty_insert_flip_string(tty, data, urb->actual_length); |
294 | tty_flip_buffer_push(tty); | |
295 | } | |
4a90f09b | 296 | tty_kref_put(tty); |
0f64478c GKH |
297 | |
298 | if (!port->read_urb) { | |
299 | dbg("URB KILLED !!!"); | |
300 | return; | |
301 | } | |
302 | ||
303 | if (port->read_urb->status != -EINPROGRESS) { | |
304 | port->read_urb->dev = port->serial->dev; | |
305 | ||
81105984 GKH |
306 | retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); |
307 | if (retval) | |
308 | dbg("usb_submit_urb(read bulk) failed, retval = %d", | |
309 | retval); | |
0f64478c GKH |
310 | } |
311 | } | |
312 | ||
313 | /* | |
314 | * mos7720_bulk_out_data_callback | |
315 | * this is the callback function for when we have finished sending serial | |
316 | * data on the bulk out endpoint. | |
317 | */ | |
318 | static void mos7720_bulk_out_data_callback(struct urb *urb) | |
319 | { | |
320 | struct moschip_port *mos7720_port; | |
321 | struct tty_struct *tty; | |
81105984 | 322 | int status = urb->status; |
0f64478c | 323 | |
81105984 GKH |
324 | if (status) { |
325 | dbg("nonzero write bulk status received:%d", status); | |
0f64478c GKH |
326 | return; |
327 | } | |
328 | ||
329 | mos7720_port = urb->context; | |
330 | if (!mos7720_port) { | |
331 | dbg("NULL mos7720_port pointer"); | |
332 | return ; | |
333 | } | |
334 | ||
335 | dbg("Entering ........."); | |
336 | ||
4a90f09b | 337 | tty = tty_port_tty_get(&mos7720_port->port->port); |
0f64478c | 338 | |
b963a844 JS |
339 | if (tty && mos7720_port->open) |
340 | tty_wakeup(tty); | |
4a90f09b | 341 | tty_kref_put(tty); |
0f64478c GKH |
342 | } |
343 | ||
344 | /* | |
345 | * send_mos_cmd | |
346 | * this function will be used for sending command to device | |
347 | */ | |
348 | static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value, | |
eb771e2c | 349 | __u16 index, u8 *data) |
0f64478c GKH |
350 | { |
351 | int status; | |
eb771e2c | 352 | u8 *buf; |
0f64478c | 353 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
0f64478c GKH |
354 | |
355 | if (value < MOS_MAX_PORT) { | |
4da1a17d | 356 | if (product == MOSCHIP_DEVICE_ID_7715) |
fb088e33 | 357 | value = 0x0200; /* identifies the 7715's serial port */ |
4da1a17d | 358 | else |
0f64478c | 359 | value = value*0x100+0x200; |
0f64478c GKH |
360 | } else { |
361 | value = 0x0000; | |
362 | if ((product == MOSCHIP_DEVICE_ID_7715) && | |
363 | (index != 0x08)) { | |
364 | dbg("serial->product== MOSCHIP_DEVICE_ID_7715"); | |
4da1a17d | 365 | /* index = 0x01 ; */ |
0f64478c GKH |
366 | } |
367 | } | |
368 | ||
369 | if (request == MOS_WRITE) { | |
eb771e2c JH |
370 | value = value + *data; |
371 | status = usb_control_msg(serial->dev, | |
372 | usb_sndctrlpipe(serial->dev, 0), MOS_WRITE, | |
373 | 0x40, value, index, NULL, 0, MOS_WDR_TIMEOUT); | |
0f64478c | 374 | } else { |
eb771e2c JH |
375 | buf = kmalloc(1, GFP_KERNEL); |
376 | if (!buf) { | |
377 | status = -ENOMEM; | |
378 | goto out; | |
379 | } | |
380 | status = usb_control_msg(serial->dev, | |
381 | usb_rcvctrlpipe(serial->dev, 0), MOS_READ, | |
382 | 0xc0, value, index, buf, 1, MOS_WDR_TIMEOUT); | |
383 | *data = *buf; | |
384 | kfree(buf); | |
0f64478c | 385 | } |
eb771e2c | 386 | out: |
0f64478c | 387 | if (status < 0) |
759f3634 | 388 | dbg("Command Write failed Value %x index %x", value, index); |
0f64478c GKH |
389 | |
390 | return status; | |
391 | } | |
392 | ||
fb088e33 MD |
393 | |
394 | /* | |
395 | * mos77xx_probe | |
396 | * this function installs the appropriate read interrupt endpoint callback | |
397 | * depending on whether the device is a 7720 or 7715, thus avoiding costly | |
398 | * run-time checks in the high-frequency callback routine itself. | |
399 | */ | |
400 | static int mos77xx_probe(struct usb_serial *serial, | |
401 | const struct usb_device_id *id) | |
402 | { | |
403 | if (id->idProduct == MOSCHIP_DEVICE_ID_7715) | |
404 | moschip7720_2port_driver.read_int_callback = | |
405 | mos7715_interrupt_callback; | |
406 | else | |
407 | moschip7720_2port_driver.read_int_callback = | |
408 | mos7720_interrupt_callback; | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
413 | static int mos77xx_calc_num_ports(struct usb_serial *serial) | |
414 | { | |
415 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); | |
416 | if (product == MOSCHIP_DEVICE_ID_7715) | |
417 | return 1; | |
418 | ||
419 | return 2; | |
420 | } | |
421 | ||
a509a7e4 | 422 | static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port) |
0f64478c GKH |
423 | { |
424 | struct usb_serial *serial; | |
425 | struct usb_serial_port *port0; | |
426 | struct urb *urb; | |
427 | struct moschip_serial *mos7720_serial; | |
428 | struct moschip_port *mos7720_port; | |
429 | int response; | |
430 | int port_number; | |
431 | char data; | |
fe4b65ec | 432 | int allocated_urbs = 0; |
0f64478c GKH |
433 | int j; |
434 | ||
435 | serial = port->serial; | |
436 | ||
437 | mos7720_port = usb_get_serial_port_data(port); | |
438 | if (mos7720_port == NULL) | |
439 | return -ENODEV; | |
440 | ||
441 | port0 = serial->port[0]; | |
442 | ||
443 | mos7720_serial = usb_get_serial_data(serial); | |
444 | ||
445 | if (mos7720_serial == NULL || port0 == NULL) | |
446 | return -ENODEV; | |
447 | ||
448 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
449 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
450 | ||
451 | /* Initialising the write urb pool */ | |
452 | for (j = 0; j < NUM_URBS; ++j) { | |
4da1a17d | 453 | urb = usb_alloc_urb(0, GFP_KERNEL); |
0f64478c GKH |
454 | mos7720_port->write_urb_pool[j] = urb; |
455 | ||
456 | if (urb == NULL) { | |
194343d9 | 457 | dev_err(&port->dev, "No more urbs???\n"); |
0f64478c GKH |
458 | continue; |
459 | } | |
460 | ||
461 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
462 | GFP_KERNEL); | |
463 | if (!urb->transfer_buffer) { | |
194343d9 GKH |
464 | dev_err(&port->dev, |
465 | "%s-out of memory for urb buffers.\n", | |
466 | __func__); | |
fe4b65ec ON |
467 | usb_free_urb(mos7720_port->write_urb_pool[j]); |
468 | mos7720_port->write_urb_pool[j] = NULL; | |
0f64478c GKH |
469 | continue; |
470 | } | |
fe4b65ec | 471 | allocated_urbs++; |
0f64478c GKH |
472 | } |
473 | ||
fe4b65ec ON |
474 | if (!allocated_urbs) |
475 | return -ENOMEM; | |
476 | ||
0f64478c GKH |
477 | /* Initialize MCS7720 -- Write Init values to corresponding Registers |
478 | * | |
479 | * Register Index | |
2f9ea55c | 480 | * 0 : THR/RHR |
0f64478c GKH |
481 | * 1 : IER |
482 | * 2 : FCR | |
483 | * 3 : LCR | |
484 | * 4 : MCR | |
2f9ea55c KS |
485 | * 5 : LSR |
486 | * 6 : MSR | |
487 | * 7 : SPR | |
0f64478c GKH |
488 | * |
489 | * 0x08 : SP1/2 Control Reg | |
490 | */ | |
491 | port_number = port->number - port->serial->minor; | |
492 | send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data); | |
759f3634 | 493 | dbg("SS::%p LSR:%x", mos7720_port, data); |
0f64478c GKH |
494 | |
495 | dbg("Check:Sending Command .........."); | |
496 | ||
497 | data = 0x02; | |
498 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x01, &data); | |
499 | data = 0x02; | |
500 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x02, &data); | |
501 | ||
502 | data = 0x00; | |
503 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
504 | data = 0x00; | |
505 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
506 | ||
507 | data = 0xCF; | |
508 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
509 | data = 0x03; | |
4da1a17d | 510 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
511 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
512 | data = 0x0b; | |
4da1a17d | 513 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
514 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
515 | data = 0x0b; | |
516 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
517 | ||
518 | data = 0x00; | |
519 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
520 | data = 0x00; | |
521 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
522 | ||
523 | /* data = 0x00; | |
524 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, port_number + 1, &data); | |
525 | data = 0x03; | |
526 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); | |
527 | data = 0x00; | |
4da1a17d AC |
528 | send_mos_cmd(port->serial, MOS_WRITE, MOS_MAX_PORT, |
529 | port_number + 1, &data); | |
0f64478c GKH |
530 | */ |
531 | data = 0x00; | |
532 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
533 | ||
534 | data = data | (port->number - port->serial->minor + 1); | |
535 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
536 | ||
537 | data = 0x83; | |
4da1a17d | 538 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
539 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
540 | data = 0x0c; | |
541 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); | |
542 | data = 0x00; | |
543 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
544 | data = 0x03; | |
4da1a17d | 545 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
546 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
547 | data = 0x0c; | |
548 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
549 | data = 0x0c; | |
550 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
551 | ||
0f64478c GKH |
552 | /* see if we've set up our endpoint info yet * |
553 | * (can't set it up in mos7720_startup as the * | |
554 | * structures were not set up at that time.) */ | |
555 | if (!mos7720_serial->interrupt_started) { | |
556 | dbg("Interrupt buffer NULL !!!"); | |
557 | ||
558 | /* not set up yet, so do it now */ | |
559 | mos7720_serial->interrupt_started = 1; | |
560 | ||
561 | dbg("To Submit URB !!!"); | |
562 | ||
563 | /* set up our interrupt urb */ | |
564 | usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, | |
4da1a17d AC |
565 | usb_rcvintpipe(serial->dev, |
566 | port->interrupt_in_endpointAddress), | |
567 | port0->interrupt_in_buffer, | |
568 | port0->interrupt_in_urb->transfer_buffer_length, | |
569 | mos7720_interrupt_callback, mos7720_port, | |
570 | port0->interrupt_in_urb->interval); | |
0f64478c GKH |
571 | |
572 | /* start interrupt read for this mos7720 this interrupt * | |
4da1a17d | 573 | * will continue as long as the mos7720 is connected */ |
0f64478c GKH |
574 | dbg("Submit URB over !!!"); |
575 | response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); | |
576 | if (response) | |
577 | dev_err(&port->dev, | |
898eb71c | 578 | "%s - Error %d submitting control urb\n", |
441b62c1 | 579 | __func__, response); |
0f64478c GKH |
580 | } |
581 | ||
582 | /* set up our bulk in urb */ | |
583 | usb_fill_bulk_urb(port->read_urb, serial->dev, | |
584 | usb_rcvbulkpipe(serial->dev, | |
4da1a17d | 585 | port->bulk_in_endpointAddress), |
0f64478c GKH |
586 | port->bulk_in_buffer, |
587 | port->read_urb->transfer_buffer_length, | |
588 | mos7720_bulk_in_callback, mos7720_port); | |
589 | response = usb_submit_urb(port->read_urb, GFP_KERNEL); | |
590 | if (response) | |
4da1a17d AC |
591 | dev_err(&port->dev, "%s - Error %d submitting read urb\n", |
592 | __func__, response); | |
0f64478c GKH |
593 | |
594 | /* initialize our icount structure */ | |
595 | memset(&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount)); | |
596 | ||
597 | /* initialize our port settings */ | |
598 | mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ | |
599 | ||
600 | /* send a open port command */ | |
601 | mos7720_port->open = 1; | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | /* | |
607 | * mos7720_chars_in_buffer | |
608 | * this function is called by the tty driver when it wants to know how many | |
609 | * bytes of data we currently have outstanding in the port (data that has | |
610 | * been written, but hasn't made it out the port yet) | |
611 | * If successful, we return the number of bytes left to be written in the | |
612 | * system, | |
613 | * Otherwise we return a negative error number. | |
614 | */ | |
95da310e | 615 | static int mos7720_chars_in_buffer(struct tty_struct *tty) |
0f64478c | 616 | { |
95da310e | 617 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
618 | int i; |
619 | int chars = 0; | |
620 | struct moschip_port *mos7720_port; | |
621 | ||
441b62c1 | 622 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
623 | |
624 | mos7720_port = usb_get_serial_port_data(port); | |
625 | if (mos7720_port == NULL) { | |
441b62c1 | 626 | dbg("%s:leaving ...........", __func__); |
23198fda | 627 | return 0; |
0f64478c GKH |
628 | } |
629 | ||
630 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
631 | if (mos7720_port->write_urb_pool[i] && |
632 | mos7720_port->write_urb_pool[i]->status == -EINPROGRESS) | |
0f64478c GKH |
633 | chars += URB_TRANSFER_BUFFER_SIZE; |
634 | } | |
441b62c1 | 635 | dbg("%s - returns %d", __func__, chars); |
0f64478c GKH |
636 | return chars; |
637 | } | |
638 | ||
335f8514 | 639 | static void mos7720_close(struct usb_serial_port *port) |
0f64478c GKH |
640 | { |
641 | struct usb_serial *serial; | |
642 | struct moschip_port *mos7720_port; | |
643 | char data; | |
644 | int j; | |
645 | ||
646 | dbg("mos7720_close:entering..."); | |
647 | ||
648 | serial = port->serial; | |
649 | ||
650 | mos7720_port = usb_get_serial_port_data(port); | |
651 | if (mos7720_port == NULL) | |
652 | return; | |
653 | ||
654 | for (j = 0; j < NUM_URBS; ++j) | |
655 | usb_kill_urb(mos7720_port->write_urb_pool[j]); | |
656 | ||
657 | /* Freeing Write URBs */ | |
658 | for (j = 0; j < NUM_URBS; ++j) { | |
659 | if (mos7720_port->write_urb_pool[j]) { | |
660 | kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); | |
661 | usb_free_urb(mos7720_port->write_urb_pool[j]); | |
662 | } | |
663 | } | |
664 | ||
665 | /* While closing port, shutdown all bulk read, write * | |
a1cd7e99 ON |
666 | * and interrupt read if they exists, otherwise nop */ |
667 | dbg("Shutdown bulk write"); | |
668 | usb_kill_urb(port->write_urb); | |
669 | dbg("Shutdown bulk read"); | |
670 | usb_kill_urb(port->read_urb); | |
671 | ||
672 | mutex_lock(&serial->disc_mutex); | |
673 | /* these commands must not be issued if the device has | |
674 | * been disconnected */ | |
675 | if (!serial->disconnected) { | |
676 | data = 0x00; | |
4da1a17d AC |
677 | send_mos_cmd(serial, MOS_WRITE, |
678 | port->number - port->serial->minor, 0x04, &data); | |
a1cd7e99 ON |
679 | |
680 | data = 0x00; | |
4da1a17d AC |
681 | send_mos_cmd(serial, MOS_WRITE, |
682 | port->number - port->serial->minor, 0x01, &data); | |
0f64478c | 683 | } |
a1cd7e99 | 684 | mutex_unlock(&serial->disc_mutex); |
0f64478c GKH |
685 | mos7720_port->open = 0; |
686 | ||
441b62c1 | 687 | dbg("Leaving %s", __func__); |
0f64478c GKH |
688 | } |
689 | ||
95da310e | 690 | static void mos7720_break(struct tty_struct *tty, int break_state) |
0f64478c | 691 | { |
95da310e | 692 | struct usb_serial_port *port = tty->driver_data; |
4da1a17d | 693 | unsigned char data; |
0f64478c GKH |
694 | struct usb_serial *serial; |
695 | struct moschip_port *mos7720_port; | |
696 | ||
441b62c1 | 697 | dbg("Entering %s", __func__); |
0f64478c GKH |
698 | |
699 | serial = port->serial; | |
700 | ||
701 | mos7720_port = usb_get_serial_port_data(port); | |
702 | if (mos7720_port == NULL) | |
703 | return; | |
704 | ||
705 | if (break_state == -1) | |
706 | data = mos7720_port->shadowLCR | UART_LCR_SBC; | |
707 | else | |
708 | data = mos7720_port->shadowLCR & ~UART_LCR_SBC; | |
709 | ||
710 | mos7720_port->shadowLCR = data; | |
711 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, | |
712 | 0x03, &data); | |
713 | ||
714 | return; | |
715 | } | |
716 | ||
717 | /* | |
718 | * mos7720_write_room | |
719 | * this function is called by the tty driver when it wants to know how many | |
720 | * bytes of data we can accept for a specific port. | |
721 | * If successful, we return the amount of room that we have for this port | |
722 | * Otherwise we return a negative error number. | |
723 | */ | |
95da310e | 724 | static int mos7720_write_room(struct tty_struct *tty) |
0f64478c | 725 | { |
95da310e | 726 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
727 | struct moschip_port *mos7720_port; |
728 | int room = 0; | |
729 | int i; | |
730 | ||
441b62c1 | 731 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
732 | |
733 | mos7720_port = usb_get_serial_port_data(port); | |
734 | if (mos7720_port == NULL) { | |
441b62c1 | 735 | dbg("%s:leaving ...........", __func__); |
0f64478c GKH |
736 | return -ENODEV; |
737 | } | |
738 | ||
a5b6f60c | 739 | /* FIXME: Locking */ |
0f64478c | 740 | for (i = 0; i < NUM_URBS; ++i) { |
4da1a17d AC |
741 | if (mos7720_port->write_urb_pool[i] && |
742 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) | |
0f64478c GKH |
743 | room += URB_TRANSFER_BUFFER_SIZE; |
744 | } | |
745 | ||
441b62c1 | 746 | dbg("%s - returns %d", __func__, room); |
0f64478c GKH |
747 | return room; |
748 | } | |
749 | ||
95da310e AC |
750 | static int mos7720_write(struct tty_struct *tty, struct usb_serial_port *port, |
751 | const unsigned char *data, int count) | |
0f64478c GKH |
752 | { |
753 | int status; | |
754 | int i; | |
755 | int bytes_sent = 0; | |
756 | int transfer_size; | |
757 | ||
758 | struct moschip_port *mos7720_port; | |
759 | struct usb_serial *serial; | |
760 | struct urb *urb; | |
761 | const unsigned char *current_position = data; | |
762 | ||
441b62c1 | 763 | dbg("%s:entering ...........", __func__); |
0f64478c GKH |
764 | |
765 | serial = port->serial; | |
766 | ||
767 | mos7720_port = usb_get_serial_port_data(port); | |
768 | if (mos7720_port == NULL) { | |
769 | dbg("mos7720_port is NULL"); | |
770 | return -ENODEV; | |
771 | } | |
772 | ||
773 | /* try to find a free urb in the list */ | |
774 | urb = NULL; | |
775 | ||
776 | for (i = 0; i < NUM_URBS; ++i) { | |
4da1a17d AC |
777 | if (mos7720_port->write_urb_pool[i] && |
778 | mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) { | |
0f64478c | 779 | urb = mos7720_port->write_urb_pool[i]; |
4da1a17d | 780 | dbg("URB:%d", i); |
0f64478c GKH |
781 | break; |
782 | } | |
783 | } | |
784 | ||
785 | if (urb == NULL) { | |
441b62c1 | 786 | dbg("%s - no more free urbs", __func__); |
0f64478c GKH |
787 | goto exit; |
788 | } | |
789 | ||
790 | if (urb->transfer_buffer == NULL) { | |
791 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, | |
792 | GFP_KERNEL); | |
793 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
794 | dev_err(&port->dev, "%s no more kernel memory...\n", |
795 | __func__); | |
0f64478c GKH |
796 | goto exit; |
797 | } | |
798 | } | |
4da1a17d | 799 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); |
0f64478c GKH |
800 | |
801 | memcpy(urb->transfer_buffer, current_position, transfer_size); | |
441b62c1 | 802 | usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, |
0f64478c GKH |
803 | urb->transfer_buffer); |
804 | ||
805 | /* fill urb with data and submit */ | |
806 | usb_fill_bulk_urb(urb, serial->dev, | |
807 | usb_sndbulkpipe(serial->dev, | |
4da1a17d | 808 | port->bulk_out_endpointAddress), |
0f64478c GKH |
809 | urb->transfer_buffer, transfer_size, |
810 | mos7720_bulk_out_data_callback, mos7720_port); | |
811 | ||
812 | /* send it down the pipe */ | |
4da1a17d | 813 | status = usb_submit_urb(urb, GFP_ATOMIC); |
0f64478c | 814 | if (status) { |
194343d9 GKH |
815 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
816 | "with status = %d\n", __func__, status); | |
0f64478c GKH |
817 | bytes_sent = status; |
818 | goto exit; | |
819 | } | |
820 | bytes_sent = transfer_size; | |
821 | ||
822 | exit: | |
823 | return bytes_sent; | |
824 | } | |
825 | ||
95da310e | 826 | static void mos7720_throttle(struct tty_struct *tty) |
0f64478c | 827 | { |
95da310e | 828 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 829 | struct moschip_port *mos7720_port; |
0f64478c GKH |
830 | int status; |
831 | ||
759f3634 | 832 | dbg("%s- port %d", __func__, port->number); |
0f64478c GKH |
833 | |
834 | mos7720_port = usb_get_serial_port_data(port); | |
835 | ||
836 | if (mos7720_port == NULL) | |
837 | return; | |
838 | ||
839 | if (!mos7720_port->open) { | |
840 | dbg("port not opened"); | |
841 | return; | |
842 | } | |
843 | ||
441b62c1 | 844 | dbg("%s: Entering ..........", __func__); |
0f64478c | 845 | |
0f64478c GKH |
846 | /* if we are implementing XON/XOFF, send the stop character */ |
847 | if (I_IXOFF(tty)) { | |
848 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e | 849 | status = mos7720_write(tty, port, &stop_char, 1); |
0f64478c GKH |
850 | if (status <= 0) |
851 | return; | |
852 | } | |
853 | ||
854 | /* if we are implementing RTS/CTS, toggle that line */ | |
855 | if (tty->termios->c_cflag & CRTSCTS) { | |
856 | mos7720_port->shadowMCR &= ~UART_MCR_RTS; | |
857 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
858 | port->number - port->serial->minor, | |
859 | UART_MCR, &mos7720_port->shadowMCR); | |
860 | if (status != 0) | |
861 | return; | |
862 | } | |
863 | } | |
864 | ||
95da310e | 865 | static void mos7720_unthrottle(struct tty_struct *tty) |
0f64478c | 866 | { |
95da310e | 867 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 868 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); |
95da310e | 869 | int status; |
0f64478c GKH |
870 | |
871 | if (mos7720_port == NULL) | |
872 | return; | |
873 | ||
874 | if (!mos7720_port->open) { | |
441b62c1 | 875 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
876 | return; |
877 | } | |
878 | ||
441b62c1 | 879 | dbg("%s: Entering ..........", __func__); |
0f64478c | 880 | |
0f64478c GKH |
881 | /* if we are implementing XON/XOFF, send the start character */ |
882 | if (I_IXOFF(tty)) { | |
883 | unsigned char start_char = START_CHAR(tty); | |
95da310e | 884 | status = mos7720_write(tty, port, &start_char, 1); |
0f64478c GKH |
885 | if (status <= 0) |
886 | return; | |
887 | } | |
888 | ||
889 | /* if we are implementing RTS/CTS, toggle that line */ | |
890 | if (tty->termios->c_cflag & CRTSCTS) { | |
891 | mos7720_port->shadowMCR |= UART_MCR_RTS; | |
892 | status = send_mos_cmd(port->serial, MOS_WRITE, | |
893 | port->number - port->serial->minor, | |
894 | UART_MCR, &mos7720_port->shadowMCR); | |
895 | if (status != 0) | |
896 | return; | |
897 | } | |
898 | } | |
899 | ||
900 | static int set_higher_rates(struct moschip_port *mos7720_port, | |
901 | unsigned int baud) | |
902 | { | |
903 | unsigned char data; | |
904 | struct usb_serial_port *port; | |
905 | struct usb_serial *serial; | |
906 | int port_number; | |
907 | ||
908 | if (mos7720_port == NULL) | |
909 | return -EINVAL; | |
910 | ||
911 | port = mos7720_port->port; | |
912 | serial = port->serial; | |
913 | ||
4da1a17d AC |
914 | /*********************************************** |
915 | * Init Sequence for higher rates | |
916 | ***********************************************/ | |
0f64478c GKH |
917 | dbg("Sending Setting Commands .........."); |
918 | port_number = port->number - port->serial->minor; | |
919 | ||
920 | data = 0x000; | |
921 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); | |
922 | data = 0x000; | |
923 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data); | |
924 | data = 0x0CF; | |
925 | send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data); | |
926 | data = 0x00b; | |
4da1a17d | 927 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
928 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
929 | data = 0x00b; | |
930 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
931 | ||
932 | data = 0x000; | |
933 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
934 | data = 0x000; | |
935 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
936 | ||
937 | ||
4da1a17d AC |
938 | /*********************************************** |
939 | * Set for higher rates * | |
940 | ***********************************************/ | |
0f64478c GKH |
941 | |
942 | data = baud * 0x10; | |
4da1a17d | 943 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data); |
0f64478c GKH |
944 | |
945 | data = 0x003; | |
946 | send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data); | |
947 | data = 0x003; | |
948 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); | |
949 | ||
950 | data = 0x02b; | |
4da1a17d | 951 | mos7720_port->shadowMCR = data; |
0f64478c GKH |
952 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); |
953 | data = 0x02b; | |
954 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
955 | ||
4da1a17d AC |
956 | /*********************************************** |
957 | * Set DLL/DLM | |
958 | ***********************************************/ | |
0f64478c GKH |
959 | |
960 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
4da1a17d | 961 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
962 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
963 | ||
964 | data = 0x001; /* DLL */ | |
4da1a17d | 965 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data); |
0f64478c | 966 | data = 0x000; /* DLM */ |
4da1a17d | 967 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data); |
0f64478c GKH |
968 | |
969 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
4da1a17d | 970 | mos7720_port->shadowLCR = data; |
0f64478c GKH |
971 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data); |
972 | ||
973 | return 0; | |
974 | } | |
975 | ||
976 | /* baud rate information */ | |
4da1a17d | 977 | struct divisor_table_entry { |
0f64478c GKH |
978 | __u32 baudrate; |
979 | __u16 divisor; | |
980 | }; | |
981 | ||
982 | /* Define table of divisors for moschip 7720 hardware * | |
983 | * These assume a 3.6864MHz crystal, the standard /16, and * | |
984 | * MCR.7 = 0. */ | |
985 | static struct divisor_table_entry divisor_table[] = { | |
986 | { 50, 2304}, | |
987 | { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ | |
988 | { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ | |
989 | { 150, 768}, | |
990 | { 300, 384}, | |
991 | { 600, 192}, | |
992 | { 1200, 96}, | |
993 | { 1800, 64}, | |
994 | { 2400, 48}, | |
995 | { 4800, 24}, | |
996 | { 7200, 16}, | |
997 | { 9600, 12}, | |
998 | { 19200, 6}, | |
999 | { 38400, 3}, | |
1000 | { 57600, 2}, | |
1001 | { 115200, 1}, | |
1002 | }; | |
1003 | ||
1004 | /***************************************************************************** | |
1005 | * calc_baud_rate_divisor | |
1006 | * this function calculates the proper baud rate divisor for the specified | |
1007 | * baud rate. | |
1008 | *****************************************************************************/ | |
1009 | static int calc_baud_rate_divisor(int baudrate, int *divisor) | |
1010 | { | |
1011 | int i; | |
1012 | __u16 custom; | |
1013 | __u16 round1; | |
1014 | __u16 round; | |
1015 | ||
1016 | ||
441b62c1 | 1017 | dbg("%s - %d", __func__, baudrate); |
0f64478c GKH |
1018 | |
1019 | for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { | |
1020 | if (divisor_table[i].baudrate == baudrate) { | |
1021 | *divisor = divisor_table[i].divisor; | |
1022 | return 0; | |
1023 | } | |
1024 | } | |
1025 | ||
4da1a17d AC |
1026 | /* After trying for all the standard baud rates * |
1027 | * Try calculating the divisor for this baud rate */ | |
0f64478c GKH |
1028 | if (baudrate > 75 && baudrate < 230400) { |
1029 | /* get the divisor */ | |
1030 | custom = (__u16)(230400L / baudrate); | |
1031 | ||
1032 | /* Check for round off */ | |
1033 | round1 = (__u16)(2304000L / baudrate); | |
1034 | round = (__u16)(round1 - (custom * 10)); | |
1035 | if (round > 4) | |
1036 | custom++; | |
1037 | *divisor = custom; | |
1038 | ||
4da1a17d | 1039 | dbg("Baud %d = %d", baudrate, custom); |
0f64478c GKH |
1040 | return 0; |
1041 | } | |
1042 | ||
1043 | dbg("Baud calculation Failed..."); | |
1044 | return -EINVAL; | |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * send_cmd_write_baud_rate | |
1049 | * this function sends the proper command to change the baud rate of the | |
1050 | * specified port. | |
1051 | */ | |
1052 | static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port, | |
1053 | int baudrate) | |
1054 | { | |
1055 | struct usb_serial_port *port; | |
1056 | struct usb_serial *serial; | |
1057 | int divisor; | |
1058 | int status; | |
1059 | unsigned char data; | |
1060 | unsigned char number; | |
1061 | ||
1062 | if (mos7720_port == NULL) | |
1063 | return -1; | |
1064 | ||
1065 | port = mos7720_port->port; | |
1066 | serial = port->serial; | |
1067 | ||
441b62c1 | 1068 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1069 | |
1070 | number = port->number - port->serial->minor; | |
441b62c1 | 1071 | dbg("%s - port = %d, baud = %d", __func__, port->number, baudrate); |
0f64478c | 1072 | |
4da1a17d | 1073 | /* Calculate the Divisor */ |
0f64478c GKH |
1074 | status = calc_baud_rate_divisor(baudrate, &divisor); |
1075 | if (status) { | |
194343d9 | 1076 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
0f64478c GKH |
1077 | return status; |
1078 | } | |
1079 | ||
4da1a17d AC |
1080 | /* Enable access to divisor latch */ |
1081 | data = mos7720_port->shadowLCR | UART_LCR_DLAB; | |
1082 | mos7720_port->shadowLCR = data; | |
1083 | send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data); | |
0f64478c GKH |
1084 | |
1085 | /* Write the divisor */ | |
1086 | data = ((unsigned char)(divisor & 0xff)); | |
4da1a17d | 1087 | send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data); |
0f64478c GKH |
1088 | |
1089 | data = ((unsigned char)((divisor & 0xff00) >> 8)); | |
4da1a17d | 1090 | send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data); |
0f64478c | 1091 | |
4da1a17d AC |
1092 | /* Disable access to divisor latch */ |
1093 | data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; | |
1094 | mos7720_port->shadowLCR = data; | |
1095 | send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data); | |
0f64478c GKH |
1096 | |
1097 | return status; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * change_port_settings | |
1102 | * This routine is called to set the UART on the device to match | |
1103 | * the specified new settings. | |
1104 | */ | |
95da310e AC |
1105 | static void change_port_settings(struct tty_struct *tty, |
1106 | struct moschip_port *mos7720_port, | |
606d099c | 1107 | struct ktermios *old_termios) |
0f64478c GKH |
1108 | { |
1109 | struct usb_serial_port *port; | |
1110 | struct usb_serial *serial; | |
0f64478c GKH |
1111 | int baud; |
1112 | unsigned cflag; | |
1113 | unsigned iflag; | |
1114 | __u8 mask = 0xff; | |
1115 | __u8 lData; | |
1116 | __u8 lParity; | |
1117 | __u8 lStop; | |
1118 | int status; | |
1119 | int port_number; | |
1120 | char data; | |
1121 | ||
1122 | if (mos7720_port == NULL) | |
1123 | return ; | |
1124 | ||
1125 | port = mos7720_port->port; | |
1126 | serial = port->serial; | |
1127 | port_number = port->number - port->serial->minor; | |
1128 | ||
441b62c1 | 1129 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1130 | |
1131 | if (!mos7720_port->open) { | |
441b62c1 | 1132 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1133 | return; |
1134 | } | |
1135 | ||
441b62c1 | 1136 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1137 | |
1138 | lData = UART_LCR_WLEN8; | |
1139 | lStop = 0x00; /* 1 stop bit */ | |
1140 | lParity = 0x00; /* No parity */ | |
1141 | ||
1142 | cflag = tty->termios->c_cflag; | |
1143 | iflag = tty->termios->c_iflag; | |
1144 | ||
1145 | /* Change the number of bits */ | |
1146 | switch (cflag & CSIZE) { | |
1147 | case CS5: | |
1148 | lData = UART_LCR_WLEN5; | |
1149 | mask = 0x1f; | |
1150 | break; | |
1151 | ||
1152 | case CS6: | |
1153 | lData = UART_LCR_WLEN6; | |
1154 | mask = 0x3f; | |
1155 | break; | |
1156 | ||
1157 | case CS7: | |
1158 | lData = UART_LCR_WLEN7; | |
1159 | mask = 0x7f; | |
1160 | break; | |
1161 | default: | |
1162 | case CS8: | |
1163 | lData = UART_LCR_WLEN8; | |
1164 | break; | |
1165 | } | |
1166 | ||
1167 | /* Change the Parity bit */ | |
1168 | if (cflag & PARENB) { | |
1169 | if (cflag & PARODD) { | |
1170 | lParity = UART_LCR_PARITY; | |
441b62c1 | 1171 | dbg("%s - parity = odd", __func__); |
0f64478c GKH |
1172 | } else { |
1173 | lParity = (UART_LCR_EPAR | UART_LCR_PARITY); | |
441b62c1 | 1174 | dbg("%s - parity = even", __func__); |
0f64478c GKH |
1175 | } |
1176 | ||
1177 | } else { | |
441b62c1 | 1178 | dbg("%s - parity = none", __func__); |
0f64478c GKH |
1179 | } |
1180 | ||
1181 | if (cflag & CMSPAR) | |
1182 | lParity = lParity | 0x20; | |
1183 | ||
1184 | /* Change the Stop bit */ | |
1185 | if (cflag & CSTOPB) { | |
1186 | lStop = UART_LCR_STOP; | |
441b62c1 | 1187 | dbg("%s - stop bits = 2", __func__); |
0f64478c GKH |
1188 | } else { |
1189 | lStop = 0x00; | |
441b62c1 | 1190 | dbg("%s - stop bits = 1", __func__); |
0f64478c GKH |
1191 | } |
1192 | ||
1193 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
1194 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
1195 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
1196 | ||
1197 | /* Update the LCR with the correct value */ | |
4da1a17d AC |
1198 | mos7720_port->shadowLCR &= |
1199 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
0f64478c GKH |
1200 | mos7720_port->shadowLCR |= (lData | lParity | lStop); |
1201 | ||
1202 | ||
1203 | /* Disable Interrupts */ | |
1204 | data = 0x00; | |
4da1a17d AC |
1205 | send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor, |
1206 | UART_IER, &data); | |
0f64478c GKH |
1207 | |
1208 | data = 0x00; | |
4da1a17d | 1209 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1210 | |
1211 | data = 0xcf; | |
4da1a17d | 1212 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data); |
0f64478c GKH |
1213 | |
1214 | /* Send the updated LCR value to the mos7720 */ | |
1215 | data = mos7720_port->shadowLCR; | |
4da1a17d | 1216 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data); |
0f64478c | 1217 | |
4da1a17d AC |
1218 | data = 0x00b; |
1219 | mos7720_port->shadowMCR = data; | |
1220 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
1221 | data = 0x00b; | |
1222 | send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data); | |
0f64478c GKH |
1223 | |
1224 | /* set up the MCR register and send it to the mos7720 */ | |
1225 | mos7720_port->shadowMCR = UART_MCR_OUT2; | |
1226 | if (cflag & CBAUD) | |
1227 | mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); | |
1228 | ||
1229 | if (cflag & CRTSCTS) { | |
1230 | mos7720_port->shadowMCR |= (UART_MCR_XONANY); | |
4da1a17d AC |
1231 | /* To set hardware flow control to the specified * |
1232 | * serial port, in SP1/2_CONTROL_REG */ | |
0f64478c GKH |
1233 | if (port->number) { |
1234 | data = 0x001; | |
1235 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1236 | 0x08, &data); | |
1237 | } else { | |
1238 | data = 0x002; | |
1239 | send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, | |
1240 | 0x08, &data); | |
1241 | } | |
1242 | } else { | |
1243 | mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); | |
1244 | } | |
1245 | ||
1246 | data = mos7720_port->shadowMCR; | |
1247 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data); | |
1248 | ||
1249 | /* Determine divisor based on baud rate */ | |
1250 | baud = tty_get_baud_rate(tty); | |
1251 | if (!baud) { | |
1252 | /* pick a default, any default... */ | |
1253 | dbg("Picked default baud..."); | |
1254 | baud = 9600; | |
1255 | } | |
1256 | ||
1257 | if (baud >= 230400) { | |
1258 | set_higher_rates(mos7720_port, baud); | |
1259 | /* Enable Interrupts */ | |
1260 | data = 0x0c; | |
1261 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1262 | return; | |
1263 | } | |
1264 | ||
441b62c1 | 1265 | dbg("%s - baud rate = %d", __func__, baud); |
0f64478c | 1266 | status = send_cmd_write_baud_rate(mos7720_port, baud); |
65d063ab AC |
1267 | /* FIXME: needs to write actual resulting baud back not just |
1268 | blindly do so */ | |
1269 | if (cflag & CBAUD) | |
1270 | tty_encode_baud_rate(tty, baud, baud); | |
0f64478c GKH |
1271 | /* Enable Interrupts */ |
1272 | data = 0x0c; | |
1273 | send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data); | |
1274 | ||
1275 | if (port->read_urb->status != -EINPROGRESS) { | |
1276 | port->read_urb->dev = serial->dev; | |
1277 | ||
1278 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1279 | if (status) | |
1280 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1281 | status); | |
1282 | } | |
1283 | return; | |
1284 | } | |
1285 | ||
1286 | /* | |
1287 | * mos7720_set_termios | |
1288 | * this function is called by the tty driver when it wants to change the | |
1289 | * termios structure. | |
1290 | */ | |
95da310e AC |
1291 | static void mos7720_set_termios(struct tty_struct *tty, |
1292 | struct usb_serial_port *port, struct ktermios *old_termios) | |
0f64478c GKH |
1293 | { |
1294 | int status; | |
1295 | unsigned int cflag; | |
1296 | struct usb_serial *serial; | |
1297 | struct moschip_port *mos7720_port; | |
0f64478c GKH |
1298 | |
1299 | serial = port->serial; | |
1300 | ||
1301 | mos7720_port = usb_get_serial_port_data(port); | |
1302 | ||
1303 | if (mos7720_port == NULL) | |
1304 | return; | |
1305 | ||
0f64478c | 1306 | if (!mos7720_port->open) { |
441b62c1 | 1307 | dbg("%s - port not opened", __func__); |
0f64478c GKH |
1308 | return; |
1309 | } | |
1310 | ||
759f3634 | 1311 | dbg("setting termios - ASPIRE"); |
0f64478c GKH |
1312 | |
1313 | cflag = tty->termios->c_cflag; | |
1314 | ||
441b62c1 | 1315 | dbg("%s - cflag %08x iflag %08x", __func__, |
0f64478c GKH |
1316 | tty->termios->c_cflag, |
1317 | RELEVANT_IFLAG(tty->termios->c_iflag)); | |
1318 | ||
441b62c1 | 1319 | dbg("%s - old cflag %08x old iflag %08x", __func__, |
65d063ab AC |
1320 | old_termios->c_cflag, |
1321 | RELEVANT_IFLAG(old_termios->c_iflag)); | |
0f64478c | 1322 | |
441b62c1 | 1323 | dbg("%s - port %d", __func__, port->number); |
0f64478c GKH |
1324 | |
1325 | /* change the port settings to the new ones specified */ | |
95da310e | 1326 | change_port_settings(tty, mos7720_port, old_termios); |
0f64478c | 1327 | |
4da1a17d | 1328 | if (!port->read_urb) { |
759f3634 | 1329 | dbg("URB KILLED !!!!!"); |
0f64478c GKH |
1330 | return; |
1331 | } | |
1332 | ||
4da1a17d | 1333 | if (port->read_urb->status != -EINPROGRESS) { |
0f64478c GKH |
1334 | port->read_urb->dev = serial->dev; |
1335 | status = usb_submit_urb(port->read_urb, GFP_ATOMIC); | |
1336 | if (status) | |
1337 | dbg("usb_submit_urb(read bulk) failed, status = %d", | |
1338 | status); | |
1339 | } | |
1340 | return; | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * get_lsr_info - get line status register info | |
1345 | * | |
1346 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1347 | * is emptied. On bus types like RS485, the transmitter must | |
1348 | * release the bus after transmitting. This must be done when | |
1349 | * the transmit shift register is empty, not be done when the | |
1350 | * transmit holding register is empty. This functionality | |
1351 | * allows an RS485 driver to be written in user space. | |
1352 | */ | |
4da1a17d AC |
1353 | static int get_lsr_info(struct tty_struct *tty, |
1354 | struct moschip_port *mos7720_port, unsigned int __user *value) | |
0f64478c | 1355 | { |
2f9ea55c | 1356 | struct usb_serial_port *port = tty->driver_data; |
0f64478c | 1357 | unsigned int result = 0; |
2f9ea55c KS |
1358 | unsigned char data = 0; |
1359 | int port_number = port->number - port->serial->minor; | |
1360 | int count; | |
0f64478c | 1361 | |
95da310e | 1362 | count = mos7720_chars_in_buffer(tty); |
0f64478c | 1363 | if (count == 0) { |
2f9ea55c KS |
1364 | send_mos_cmd(port->serial, MOS_READ, port_number, |
1365 | UART_LSR, &data); | |
1366 | if ((data & (UART_LSR_TEMT | UART_LSR_THRE)) | |
1367 | == (UART_LSR_TEMT | UART_LSR_THRE)) { | |
1368 | dbg("%s -- Empty", __func__); | |
1369 | result = TIOCSER_TEMT; | |
1370 | } | |
0f64478c | 1371 | } |
0f64478c GKH |
1372 | if (copy_to_user(value, &result, sizeof(int))) |
1373 | return -EFAULT; | |
1374 | return 0; | |
1375 | } | |
1376 | ||
0f608f89 KS |
1377 | static int mos7720_tiocmget(struct tty_struct *tty, struct file *file) |
1378 | { | |
1379 | struct usb_serial_port *port = tty->driver_data; | |
1380 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
1381 | unsigned int result = 0; | |
1382 | unsigned int mcr ; | |
1383 | unsigned int msr ; | |
1384 | ||
1385 | dbg("%s - port %d", __func__, port->number); | |
1386 | ||
1387 | mcr = mos7720_port->shadowMCR; | |
1388 | msr = mos7720_port->shadowMSR; | |
1389 | ||
1390 | result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ | |
1391 | | ((mcr & UART_MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ | |
1392 | | ((msr & UART_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ | |
1393 | | ((msr & UART_MSR_DCD) ? TIOCM_CAR : 0) /* 0x040 */ | |
1394 | | ((msr & UART_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ | |
1395 | | ((msr & UART_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ | |
1396 | ||
1397 | dbg("%s -- %x", __func__, result); | |
1398 | ||
1399 | return result; | |
1400 | } | |
1401 | ||
1402 | static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, | |
1403 | unsigned int set, unsigned int clear) | |
1404 | { | |
1405 | struct usb_serial_port *port = tty->driver_data; | |
1406 | struct moschip_port *mos7720_port = usb_get_serial_port_data(port); | |
1407 | unsigned int mcr ; | |
1408 | unsigned char lmcr; | |
1409 | ||
1410 | dbg("%s - port %d", __func__, port->number); | |
1411 | dbg("he was at tiocmget"); | |
1412 | ||
1413 | mcr = mos7720_port->shadowMCR; | |
1414 | ||
1415 | if (set & TIOCM_RTS) | |
1416 | mcr |= UART_MCR_RTS; | |
1417 | if (set & TIOCM_DTR) | |
1418 | mcr |= UART_MCR_DTR; | |
1419 | if (set & TIOCM_LOOP) | |
1420 | mcr |= UART_MCR_LOOP; | |
1421 | ||
1422 | if (clear & TIOCM_RTS) | |
1423 | mcr &= ~UART_MCR_RTS; | |
1424 | if (clear & TIOCM_DTR) | |
1425 | mcr &= ~UART_MCR_DTR; | |
1426 | if (clear & TIOCM_LOOP) | |
1427 | mcr &= ~UART_MCR_LOOP; | |
1428 | ||
1429 | mos7720_port->shadowMCR = mcr; | |
1430 | lmcr = mos7720_port->shadowMCR; | |
1431 | ||
1432 | send_mos_cmd(port->serial, MOS_WRITE, | |
1433 | port->number - port->serial->minor, UART_MCR, &lmcr); | |
1434 | ||
1435 | return 0; | |
1436 | } | |
1437 | ||
0f64478c GKH |
1438 | static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, |
1439 | unsigned int __user *value) | |
1440 | { | |
1441 | unsigned int mcr ; | |
1442 | unsigned int arg; | |
1443 | unsigned char data; | |
1444 | ||
1445 | struct usb_serial_port *port; | |
1446 | ||
1447 | if (mos7720_port == NULL) | |
1448 | return -1; | |
1449 | ||
4da1a17d | 1450 | port = (struct usb_serial_port *)mos7720_port->port; |
0f64478c GKH |
1451 | mcr = mos7720_port->shadowMCR; |
1452 | ||
1453 | if (copy_from_user(&arg, value, sizeof(int))) | |
1454 | return -EFAULT; | |
1455 | ||
1456 | switch (cmd) { | |
1457 | case TIOCMBIS: | |
1458 | if (arg & TIOCM_RTS) | |
1459 | mcr |= UART_MCR_RTS; | |
1460 | if (arg & TIOCM_DTR) | |
1461 | mcr |= UART_MCR_RTS; | |
1462 | if (arg & TIOCM_LOOP) | |
1463 | mcr |= UART_MCR_LOOP; | |
1464 | break; | |
1465 | ||
1466 | case TIOCMBIC: | |
1467 | if (arg & TIOCM_RTS) | |
1468 | mcr &= ~UART_MCR_RTS; | |
1469 | if (arg & TIOCM_DTR) | |
1470 | mcr &= ~UART_MCR_RTS; | |
1471 | if (arg & TIOCM_LOOP) | |
1472 | mcr &= ~UART_MCR_LOOP; | |
1473 | break; | |
1474 | ||
0f64478c GKH |
1475 | } |
1476 | ||
1477 | mos7720_port->shadowMCR = mcr; | |
1478 | ||
1479 | data = mos7720_port->shadowMCR; | |
1480 | send_mos_cmd(port->serial, MOS_WRITE, | |
1481 | port->number - port->serial->minor, UART_MCR, &data); | |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
0f64478c GKH |
1486 | static int get_serial_info(struct moschip_port *mos7720_port, |
1487 | struct serial_struct __user *retinfo) | |
1488 | { | |
1489 | struct serial_struct tmp; | |
1490 | ||
1491 | if (!retinfo) | |
1492 | return -EFAULT; | |
1493 | ||
1494 | memset(&tmp, 0, sizeof(tmp)); | |
1495 | ||
1496 | tmp.type = PORT_16550A; | |
1497 | tmp.line = mos7720_port->port->serial->minor; | |
1498 | tmp.port = mos7720_port->port->number; | |
1499 | tmp.irq = 0; | |
1500 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
4da1a17d | 1501 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; |
0f64478c GKH |
1502 | tmp.baud_base = 9600; |
1503 | tmp.close_delay = 5*HZ; | |
1504 | tmp.closing_wait = 30*HZ; | |
1505 | ||
1506 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
1507 | return -EFAULT; | |
1508 | return 0; | |
1509 | } | |
1510 | ||
95da310e | 1511 | static int mos7720_ioctl(struct tty_struct *tty, struct file *file, |
0f64478c GKH |
1512 | unsigned int cmd, unsigned long arg) |
1513 | { | |
95da310e | 1514 | struct usb_serial_port *port = tty->driver_data; |
0f64478c GKH |
1515 | struct moschip_port *mos7720_port; |
1516 | struct async_icount cnow; | |
1517 | struct async_icount cprev; | |
1518 | struct serial_icounter_struct icount; | |
1519 | ||
1520 | mos7720_port = usb_get_serial_port_data(port); | |
1521 | if (mos7720_port == NULL) | |
1522 | return -ENODEV; | |
1523 | ||
441b62c1 | 1524 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
0f64478c GKH |
1525 | |
1526 | switch (cmd) { | |
0f64478c | 1527 | case TIOCSERGETLSR: |
441b62c1 | 1528 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
4da1a17d AC |
1529 | return get_lsr_info(tty, mos7720_port, |
1530 | (unsigned int __user *)arg); | |
0f64478c GKH |
1531 | return 0; |
1532 | ||
95da310e | 1533 | /* FIXME: These should be using the mode methods */ |
0f64478c GKH |
1534 | case TIOCMBIS: |
1535 | case TIOCMBIC: | |
4da1a17d AC |
1536 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", |
1537 | __func__, port->number); | |
0f64478c GKH |
1538 | return set_modem_info(mos7720_port, cmd, |
1539 | (unsigned int __user *)arg); | |
1540 | ||
0f64478c | 1541 | case TIOCGSERIAL: |
441b62c1 | 1542 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
0f64478c GKH |
1543 | return get_serial_info(mos7720_port, |
1544 | (struct serial_struct __user *)arg); | |
1545 | ||
0f64478c | 1546 | case TIOCMIWAIT: |
441b62c1 | 1547 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
0f64478c GKH |
1548 | cprev = mos7720_port->icount; |
1549 | while (1) { | |
1550 | if (signal_pending(current)) | |
1551 | return -ERESTARTSYS; | |
1552 | cnow = mos7720_port->icount; | |
1553 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
1554 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
1555 | return -EIO; /* no change => error */ | |
1556 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
1557 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
1558 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
4da1a17d | 1559 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
0f64478c GKH |
1560 | return 0; |
1561 | } | |
1562 | cprev = cnow; | |
1563 | } | |
1564 | /* NOTREACHED */ | |
1565 | break; | |
1566 | ||
1567 | case TIOCGICOUNT: | |
1568 | cnow = mos7720_port->icount; | |
1569 | icount.cts = cnow.cts; | |
1570 | icount.dsr = cnow.dsr; | |
1571 | icount.rng = cnow.rng; | |
1572 | icount.dcd = cnow.dcd; | |
1573 | icount.rx = cnow.rx; | |
1574 | icount.tx = cnow.tx; | |
1575 | icount.frame = cnow.frame; | |
1576 | icount.overrun = cnow.overrun; | |
1577 | icount.parity = cnow.parity; | |
1578 | icount.brk = cnow.brk; | |
1579 | icount.buf_overrun = cnow.buf_overrun; | |
1580 | ||
441b62c1 | 1581 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
4da1a17d | 1582 | port->number, icount.rx, icount.tx); |
0f64478c GKH |
1583 | if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) |
1584 | return -EFAULT; | |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | return -ENOIOCTLCMD; | |
1589 | } | |
1590 | ||
1591 | static int mos7720_startup(struct usb_serial *serial) | |
1592 | { | |
1593 | struct moschip_serial *mos7720_serial; | |
1594 | struct moschip_port *mos7720_port; | |
1595 | struct usb_device *dev; | |
1596 | int i; | |
1597 | char data; | |
fb088e33 | 1598 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
0f64478c | 1599 | |
441b62c1 | 1600 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1601 | |
1602 | if (!serial) { | |
1603 | dbg("Invalid Handler"); | |
1604 | return -ENODEV; | |
1605 | } | |
1606 | ||
1607 | dev = serial->dev; | |
1608 | ||
1609 | /* create our private serial structure */ | |
1610 | mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); | |
1611 | if (mos7720_serial == NULL) { | |
194343d9 | 1612 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1613 | return -ENOMEM; |
1614 | } | |
1615 | ||
1616 | usb_set_serial_data(serial, mos7720_serial); | |
1617 | ||
fb088e33 MD |
1618 | /* |
1619 | * The 7715 uses the first bulk in/out endpoint pair for the parallel | |
1620 | * port, and the second for the serial port. Because the usbserial core | |
1621 | * assumes both pairs are serial ports, we must engage in a bit of | |
1622 | * subterfuge and swap the pointers for ports 0 and 1 in order to make | |
1623 | * port 0 point to the serial port. However, both moschip devices use a | |
1624 | * single interrupt-in endpoint for both ports (as mentioned a little | |
1625 | * further down), and this endpoint was assigned to port 0. So after | |
1626 | * the swap, we must copy the interrupt endpoint elements from port 1 | |
1627 | * (as newly assigned) to port 0, and null out port 1 pointers. | |
1628 | */ | |
1629 | if (product == MOSCHIP_DEVICE_ID_7715) { | |
1630 | struct usb_serial_port *tmp = serial->port[0]; | |
1631 | serial->port[0] = serial->port[1]; | |
1632 | serial->port[1] = tmp; | |
1633 | serial->port[0]->interrupt_in_urb = tmp->interrupt_in_urb; | |
1634 | serial->port[0]->interrupt_in_buffer = tmp->interrupt_in_buffer; | |
1635 | serial->port[0]->interrupt_in_endpointAddress = | |
1636 | tmp->interrupt_in_endpointAddress; | |
1637 | serial->port[1]->interrupt_in_urb = NULL; | |
1638 | serial->port[1]->interrupt_in_buffer = NULL; | |
1639 | } | |
1640 | ||
0f64478c GKH |
1641 | /* we set up the pointers to the endpoints in the mos7720_open * |
1642 | * function, as the structures aren't created yet. */ | |
1643 | ||
1644 | /* set up port private structures */ | |
1645 | for (i = 0; i < serial->num_ports; ++i) { | |
1646 | mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
1647 | if (mos7720_port == NULL) { | |
194343d9 | 1648 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0f64478c GKH |
1649 | usb_set_serial_data(serial, NULL); |
1650 | kfree(mos7720_serial); | |
1651 | return -ENOMEM; | |
1652 | } | |
1653 | ||
1654 | /* Initialize all port interrupt end point to port 0 int | |
1655 | * endpoint. Our device has only one interrupt endpoint | |
fb088e33 | 1656 | * common to all ports */ |
4da1a17d AC |
1657 | serial->port[i]->interrupt_in_endpointAddress = |
1658 | serial->port[0]->interrupt_in_endpointAddress; | |
0f64478c GKH |
1659 | |
1660 | mos7720_port->port = serial->port[i]; | |
1661 | usb_set_serial_port_data(serial->port[i], mos7720_port); | |
1662 | ||
1663 | dbg("port number is %d", serial->port[i]->number); | |
1664 | dbg("serial number is %d", serial->minor); | |
1665 | } | |
1666 | ||
1667 | ||
1668 | /* setting configuration feature to one */ | |
1669 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
4da1a17d | 1670 | (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5*HZ); |
0f64478c | 1671 | |
4da1a17d AC |
1672 | /* LSR For Port 1 */ |
1673 | send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data); | |
1674 | dbg("LSR:%x", data); | |
0f64478c | 1675 | |
4da1a17d AC |
1676 | /* LSR For Port 2 */ |
1677 | send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data); | |
1678 | dbg("LSR:%x", data); | |
0f64478c GKH |
1679 | |
1680 | return 0; | |
1681 | } | |
1682 | ||
f9c99bb8 | 1683 | static void mos7720_release(struct usb_serial *serial) |
0f64478c GKH |
1684 | { |
1685 | int i; | |
1686 | ||
1687 | /* free private structure allocated for serial port */ | |
f9c99bb8 | 1688 | for (i = 0; i < serial->num_ports; ++i) |
0f64478c | 1689 | kfree(usb_get_serial_port_data(serial->port[i])); |
0f64478c GKH |
1690 | |
1691 | /* free private structure allocated for serial device */ | |
1692 | kfree(usb_get_serial_data(serial)); | |
0f64478c GKH |
1693 | } |
1694 | ||
d9b1b787 JH |
1695 | static struct usb_driver usb_driver = { |
1696 | .name = "moschip7720", | |
1697 | .probe = usb_serial_probe, | |
1698 | .disconnect = usb_serial_disconnect, | |
1699 | .id_table = moschip_port_id_table, | |
1700 | .no_dynamic_id = 1, | |
1701 | }; | |
1702 | ||
0f64478c GKH |
1703 | static struct usb_serial_driver moschip7720_2port_driver = { |
1704 | .driver = { | |
1705 | .owner = THIS_MODULE, | |
1706 | .name = "moschip7720", | |
1707 | }, | |
1708 | .description = "Moschip 2 port adapter", | |
d9b1b787 | 1709 | .usb_driver = &usb_driver, |
0f64478c | 1710 | .id_table = moschip_port_id_table, |
fb088e33 | 1711 | .calc_num_ports = mos77xx_calc_num_ports, |
0f64478c GKH |
1712 | .open = mos7720_open, |
1713 | .close = mos7720_close, | |
1714 | .throttle = mos7720_throttle, | |
1715 | .unthrottle = mos7720_unthrottle, | |
fb088e33 | 1716 | .probe = mos77xx_probe, |
0f64478c | 1717 | .attach = mos7720_startup, |
f9c99bb8 | 1718 | .release = mos7720_release, |
0f64478c | 1719 | .ioctl = mos7720_ioctl, |
0f608f89 KS |
1720 | .tiocmget = mos7720_tiocmget, |
1721 | .tiocmset = mos7720_tiocmset, | |
0f64478c GKH |
1722 | .set_termios = mos7720_set_termios, |
1723 | .write = mos7720_write, | |
1724 | .write_room = mos7720_write_room, | |
1725 | .chars_in_buffer = mos7720_chars_in_buffer, | |
1726 | .break_ctl = mos7720_break, | |
1727 | .read_bulk_callback = mos7720_bulk_in_callback, | |
fb088e33 | 1728 | .read_int_callback = NULL /* dynamically assigned in probe() */ |
0f64478c GKH |
1729 | }; |
1730 | ||
0f64478c GKH |
1731 | static int __init moschip7720_init(void) |
1732 | { | |
1733 | int retval; | |
1734 | ||
441b62c1 | 1735 | dbg("%s: Entering ..........", __func__); |
0f64478c GKH |
1736 | |
1737 | /* Register with the usb serial */ | |
1738 | retval = usb_serial_register(&moschip7720_2port_driver); | |
1739 | if (retval) | |
1740 | goto failed_port_device_register; | |
1741 | ||
c197a8db GKH |
1742 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1743 | DRIVER_DESC "\n"); | |
0f64478c GKH |
1744 | |
1745 | /* Register with the usb */ | |
1746 | retval = usb_register(&usb_driver); | |
1747 | if (retval) | |
1748 | goto failed_usb_register; | |
1749 | ||
1750 | return 0; | |
1751 | ||
1752 | failed_usb_register: | |
1753 | usb_serial_deregister(&moschip7720_2port_driver); | |
1754 | ||
1755 | failed_port_device_register: | |
1756 | return retval; | |
1757 | } | |
1758 | ||
1759 | static void __exit moschip7720_exit(void) | |
1760 | { | |
1761 | usb_deregister(&usb_driver); | |
1762 | usb_serial_deregister(&moschip7720_2port_driver); | |
1763 | } | |
1764 | ||
1765 | module_init(moschip7720_init); | |
1766 | module_exit(moschip7720_exit); | |
1767 | ||
1768 | /* Module information */ | |
4da1a17d AC |
1769 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1770 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0f64478c GKH |
1771 | MODULE_LICENSE("GPL"); |
1772 | ||
1773 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1774 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |