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21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/slab.h>
24#include <linux/init.h>
25#include <linux/mutex.h>
26#include <linux/string.h>
27#include <linux/dvb/ca.h>
28#include <media/dvbdev.h>
29#include <media/dvb_frontend.h>
30#include "dst_ca.h"
31#include "dst_common.h"
32
33#define DST_CA_ERROR 0
34#define DST_CA_NOTICE 1
35#define DST_CA_INFO 2
36#define DST_CA_DEBUG 3
37
38#define dprintk(x, y, z, format, arg...) do { \
39 if (z) { \
40 if ((x > DST_CA_ERROR) && (x > y)) \
41 printk(KERN_ERR "%s: " format "\n", __func__ , ##arg); \
42 else if ((x > DST_CA_NOTICE) && (x > y)) \
43 printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg); \
44 else if ((x > DST_CA_INFO) && (x > y)) \
45 printk(KERN_INFO "%s: " format "\n", __func__ , ##arg); \
46 else if ((x > DST_CA_DEBUG) && (x > y)) \
47 printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg); \
48 } else { \
49 if (x > y) \
50 printk(format, ## arg); \
51 } \
52} while(0)
53
54
55static DEFINE_MUTEX(dst_ca_mutex);
56static unsigned int verbose = 5;
57module_param(verbose, int, 0644);
58MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
59
60static void put_command_and_length(u8 *data, int command, int length)
61{
62 data[0] = (command >> 16) & 0xff;
63 data[1] = (command >> 8) & 0xff;
64 data[2] = command & 0xff;
65 data[3] = length;
66}
67
68static void put_checksum(u8 *check_string, int length)
69{
70 dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum.");
71 dprintk(verbose, DST_CA_DEBUG, 1, " -> string length : 0x%02x", length);
72 check_string[length] = dst_check_sum (check_string, length);
73 dprintk(verbose, DST_CA_DEBUG, 1, " -> checksum : 0x%02x", check_string[length]);
74}
75
76static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read)
77{
78 u8 reply;
79
80 mutex_lock(&state->dst_mutex);
81 dst_comm_init(state);
82 msleep(65);
83
84 if (write_dst(state, data, len)) {
85 dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover");
86 dst_error_recovery(state);
87 goto error;
88 }
89 if ((dst_pio_disable(state)) < 0) {
90 dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed.");
91 goto error;
92 }
93 if (read_dst(state, &reply, GET_ACK) < 0) {
94 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover");
95 dst_error_recovery(state);
96 goto error;
97 }
98 if (read) {
99 if (! dst_wait_dst_ready(state, LONG_DELAY)) {
100 dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready");
101 goto error;
102 }
103 if (read_dst(state, ca_string, 128) < 0) {
104 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover");
105 dst_error_recovery(state);
106 goto error;
107 }
108 }
109 mutex_unlock(&state->dst_mutex);
110 return 0;
111
112error:
113 mutex_unlock(&state->dst_mutex);
114 return -EIO;
115}
116
117
118static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read)
119{
120 u8 dst_ca_comm_err = 0;
121
122 while (dst_ca_comm_err < RETRIES) {
123 dprintk(verbose, DST_CA_NOTICE, 1, " Put Command");
124 if (dst_ci_command(state, data, ca_string, len, read)) {
125 dst_error_recovery(state);
126 dst_ca_comm_err++;
127 } else {
128 break;
129 }
130 }
131
132 if(dst_ca_comm_err == RETRIES)
133 return -EIO;
134
135 return 0;
136}
137
138
139
140static int ca_get_app_info(struct dst_state *state)
141{
142 int length, str_length;
143 static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff};
144
145 put_checksum(&command[0], command[0]);
146 if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) {
147 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
148 return -EIO;
149 }
150 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
151 dprintk(verbose, DST_CA_INFO, 1, " ================================ CI Module Application Info ======================================");
152 dprintk(verbose, DST_CA_INFO, 1, " Application Type=[%d], Application Vendor=[%d], Vendor Code=[%d]\n%s: Application info=[%s]",
153 state->messages[7], (state->messages[8] << 8) | state->messages[9],
154 (state->messages[10] << 8) | state->messages[11], __func__, (char *)(&state->messages[12]));
155 dprintk(verbose, DST_CA_INFO, 1, " ==================================================================================================");
156
157
158 length = state->messages[5];
159 str_length = length - 6;
160 if (str_length < 0) {
161 str_length = 0;
162 dprintk(verbose, DST_CA_ERROR, 1, "Invalid string length returned in ca_get_app_info(). Recovering.");
163 }
164
165
166 put_command_and_length(&state->messages[0], CA_APP_INFO, length);
167
168
169 memmove(&state->messages[4], &state->messages[7], 5);
170
171
172 state->messages[9] = str_length;
173 memmove(&state->messages[10], &state->messages[12], str_length);
174
175 return 0;
176}
177
178static int ca_get_ca_info(struct dst_state *state)
179{
180 int srcPtr, dstPtr, i, num_ids;
181 static u8 slot_command[8] = {0x07, 0x40, 0x00, 0x00, 0x02, 0x00, 0x00, 0xff};
182 const int in_system_id_pos = 8, out_system_id_pos = 4, in_num_ids_pos = 7;
183
184 put_checksum(&slot_command[0], slot_command[0]);
185 if ((dst_put_ci(state, slot_command, sizeof (slot_command), state->messages, GET_REPLY)) < 0) {
186 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
187 return -EIO;
188 }
189 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
190
191
192 dprintk(verbose, DST_CA_INFO, 0, " DST data = [");
193 for (i = 0; i < state->messages[0] + 1; i++) {
194 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x", state->messages[i]);
195 }
196 dprintk(verbose, DST_CA_INFO, 0, "]\n");
197
198
199 num_ids = state->messages[in_num_ids_pos];
200 if (num_ids >= 100) {
201 num_ids = 100;
202 dprintk(verbose, DST_CA_ERROR, 1, "Invalid number of ids (>100). Recovering.");
203 }
204 put_command_and_length(&state->messages[0], CA_INFO, num_ids * 2);
205
206 dprintk(verbose, DST_CA_INFO, 0, " CA_INFO = [");
207 srcPtr = in_system_id_pos;
208 dstPtr = out_system_id_pos;
209 for(i = 0; i < num_ids; i++) {
210 dprintk(verbose, DST_CA_INFO, 0, " 0x%02x%02x", state->messages[srcPtr + 0], state->messages[srcPtr + 1]);
211
212 state->messages[dstPtr + 0] = state->messages[srcPtr + 0];
213 state->messages[dstPtr + 1] = state->messages[srcPtr + 1];
214 srcPtr += 2;
215 dstPtr += 2;
216 }
217 dprintk(verbose, DST_CA_INFO, 0, "]\n");
218
219 return 0;
220}
221
222static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg)
223{
224 int i;
225 u8 slot_cap[256];
226 static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff};
227
228 put_checksum(&slot_command[0], slot_command[0]);
229 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) {
230 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
231 return -EIO;
232 }
233 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
234
235
236
237 dprintk(verbose, DST_CA_INFO, 1, " Slot cap = [%d]", slot_cap[7]);
238 dprintk(verbose, DST_CA_INFO, 0, "===================================\n");
239 for (i = 0; i < slot_cap[0] + 1; i++)
240 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_cap[i]);
241 dprintk(verbose, DST_CA_INFO, 0, "\n");
242
243 p_ca_caps->slot_num = 1;
244 p_ca_caps->slot_type = 1;
245 p_ca_caps->descr_num = slot_cap[7];
246 p_ca_caps->descr_type = 1;
247
248 if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps)))
249 return -EFAULT;
250
251 return 0;
252}
253
254
255static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
256{
257 return -EOPNOTSUPP;
258}
259
260
261static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg)
262{
263 int i;
264 static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff};
265
266 u8 *slot_info = state->messages;
267
268 put_checksum(&slot_command[0], 7);
269 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) {
270 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
271 return -EIO;
272 }
273 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
274
275
276
277 dprintk(verbose, DST_CA_INFO, 1, " Slot info = [%d]", slot_info[3]);
278 dprintk(verbose, DST_CA_INFO, 0, "===================================\n");
279 for (i = 0; i < 8; i++)
280 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_info[i]);
281 dprintk(verbose, DST_CA_INFO, 0, "\n");
282
283 if (slot_info[4] & 0x80) {
284 p_ca_slot_info->flags = CA_CI_MODULE_PRESENT;
285 p_ca_slot_info->num = 1;
286 p_ca_slot_info->type = CA_CI;
287 } else if (slot_info[4] & 0x40) {
288 p_ca_slot_info->flags = CA_CI_MODULE_READY;
289 p_ca_slot_info->num = 1;
290 p_ca_slot_info->type = CA_CI;
291 } else
292 p_ca_slot_info->flags = 0;
293
294 if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info)))
295 return -EFAULT;
296
297 return 0;
298}
299
300
301static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
302{
303 u8 i = 0;
304 u32 command = 0;
305
306 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg)))
307 return -EFAULT;
308
309 dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]",
310 3, p_ca_message->msg);
311
312 for (i = 0; i < 3; i++) {
313 command = command | p_ca_message->msg[i];
314 if (i < 2)
315 command = command << 8;
316 }
317 dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command);
318
319 switch (command) {
320 case CA_APP_INFO:
321 memcpy(p_ca_message->msg, state->messages, 128);
322 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
323 return -EFAULT;
324 break;
325 case CA_INFO:
326 memcpy(p_ca_message->msg, state->messages, 128);
327 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
328 return -EFAULT;
329 break;
330 }
331
332 return 0;
333}
334
335static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
336{
337 if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
338 hw_buffer->msg[2] = p_ca_message->msg[1];
339 hw_buffer->msg[3] = p_ca_message->msg[2];
340 } else {
341 if (length > 247) {
342 dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !");
343 return -EIO;
344 }
345 hw_buffer->msg[0] = (length & 0xff) + 7;
346 hw_buffer->msg[1] = 0x40;
347 hw_buffer->msg[2] = 0x03;
348 hw_buffer->msg[3] = 0x00;
349 hw_buffer->msg[4] = 0x03;
350 hw_buffer->msg[5] = length & 0xff;
351 hw_buffer->msg[6] = 0x00;
352
353
354
355
356
357 memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length);
358 }
359
360 return 0;
361}
362
363static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
364{
365 if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
366 dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed.");
367 dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST.");
368 rdc_reset_state(state);
369 return -EIO;
370 }
371 dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success.");
372
373 return 0;
374}
375
376static u32 asn_1_decode(u8 *asn_1_array)
377{
378 u8 length_field = 0, word_count = 0, count = 0;
379 u32 length = 0;
380
381 length_field = asn_1_array[0];
382 dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field);
383 if (length_field < 0x80) {
384 length = length_field & 0x7f;
385 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length);
386 } else {
387 word_count = length_field & 0x7f;
388 for (count = 0; count < word_count; count++) {
389 length = length << 8;
390 length += asn_1_array[count + 1];
391 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length);
392 }
393 }
394 return length;
395}
396
397static int debug_string(u8 *msg, u32 length, u32 offset)
398{
399 u32 i;
400
401 dprintk(verbose, DST_CA_DEBUG, 0, " String=[ ");
402 for (i = offset; i < length; i++)
403 dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]);
404 dprintk(verbose, DST_CA_DEBUG, 0, "]\n");
405
406 return 0;
407}
408
409
410static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
411{
412 u32 length = 0;
413 u8 tag_length = 8;
414
415 length = asn_1_decode(&p_ca_message->msg[3]);
416 dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length);
417 debug_string(&p_ca_message->msg[4], length, 0);
418
419 memset(hw_buffer->msg, '\0', length);
420 handle_dst_tag(state, p_ca_message, hw_buffer, length);
421 put_checksum(hw_buffer->msg, hw_buffer->msg[0]);
422
423 debug_string(hw_buffer->msg, (length + tag_length), 0);
424 write_to_8820(state, hw_buffer, (length + tag_length), reply);
425
426 return 0;
427}
428
429
430
431static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
432{
433 int ca_pmt_reply_test = 0;
434
435
436
437
438
439 if (ca_pmt_reply_test) {
440 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
441 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
442 return -EIO;
443 }
444
445
446
447 dprintk(verbose, DST_CA_ERROR, 1, " Not there yet");
448 }
449
450 if (!ca_pmt_reply_test) {
451 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
452 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
453 return -EIO;
454 }
455 dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !");
456
457
458 }
459 return 0;
460}
461
462static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
463{
464 int i;
465 u32 command;
466 struct ca_msg *hw_buffer;
467 int result = 0;
468
469 hw_buffer = kmalloc(sizeof(*hw_buffer), GFP_KERNEL);
470 if (!hw_buffer)
471 return -ENOMEM;
472 dprintk(verbose, DST_CA_DEBUG, 1, " ");
473
474 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) {
475 result = -EFAULT;
476 goto free_mem_and_exit;
477 }
478
479
480 command = 0;
481
482 for (i = 0; i < 3; i++) {
483 command = command | p_ca_message->msg[i];
484 if (i < 2)
485 command = command << 8;
486 }
487 dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
488
489 switch (command) {
490 case CA_PMT:
491 dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
492 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) {
493 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
494 result = -1;
495 goto free_mem_and_exit;
496 }
497 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
498 break;
499 case CA_PMT_REPLY:
500 dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
501
502 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
503 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
504 result = -1;
505 goto free_mem_and_exit;
506 }
507 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
508 break;
509 case CA_APP_INFO_ENQUIRY:
510 dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
511
512 if ((ca_get_app_info(state)) < 0) {
513 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
514 result = -1;
515 goto free_mem_and_exit;
516 }
517 dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
518 break;
519 case CA_INFO_ENQUIRY:
520 dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information");
521
522 if ((ca_get_ca_info(state)) < 0) {
523 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !");
524 result = -1;
525 goto free_mem_and_exit;
526 }
527 dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !");
528 break;
529 }
530
531free_mem_and_exit:
532 kfree (hw_buffer);
533
534 return result;
535}
536
537static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioctl_arg)
538{
539 struct dvb_device *dvbdev;
540 struct dst_state *state;
541 struct ca_slot_info *p_ca_slot_info;
542 struct ca_caps *p_ca_caps;
543 struct ca_msg *p_ca_message;
544 void __user *arg = (void __user *)ioctl_arg;
545 int result = 0;
546
547 mutex_lock(&dst_ca_mutex);
548 dvbdev = file->private_data;
549 state = (struct dst_state *)dvbdev->priv;
550 p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
551 p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL);
552 p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL);
553 if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) {
554 result = -ENOMEM;
555 goto free_mem_and_exit;
556 }
557
558
559 switch (cmd) {
560 case CA_SEND_MSG:
561 dprintk(verbose, DST_CA_INFO, 1, " Sending message");
562 result = ca_send_message(state, p_ca_message, arg);
563
564 if (result < 0) {
565 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !");
566 goto free_mem_and_exit;
567 }
568 break;
569 case CA_GET_MSG:
570 dprintk(verbose, DST_CA_INFO, 1, " Getting message");
571 result = ca_get_message(state, p_ca_message, arg);
572 if (result < 0) {
573 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !");
574 goto free_mem_and_exit;
575 }
576 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !");
577 break;
578 case CA_RESET:
579 dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST");
580 dst_error_bailout(state);
581 msleep(4000);
582 break;
583 case CA_GET_SLOT_INFO:
584 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info");
585 result = ca_get_slot_info(state, p_ca_slot_info, arg);
586 if (result < 0) {
587 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !");
588 result = -1;
589 goto free_mem_and_exit;
590 }
591 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !");
592 break;
593 case CA_GET_CAP:
594 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities");
595 result = ca_get_slot_caps(state, p_ca_caps, arg);
596 if (result < 0) {
597 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !");
598 goto free_mem_and_exit;
599 }
600 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !");
601 break;
602 case CA_GET_DESCR_INFO:
603 dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description");
604 result = ca_get_slot_descr(state, p_ca_message, arg);
605 if (result < 0) {
606 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !");
607 goto free_mem_and_exit;
608 }
609 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !");
610 break;
611 default:
612 result = -EOPNOTSUPP;
613 }
614 free_mem_and_exit:
615 kfree (p_ca_message);
616 kfree (p_ca_slot_info);
617 kfree (p_ca_caps);
618
619 mutex_unlock(&dst_ca_mutex);
620 return result;
621}
622
623static int dst_ca_open(struct inode *inode, struct file *file)
624{
625 dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file);
626
627 return 0;
628}
629
630static int dst_ca_release(struct inode *inode, struct file *file)
631{
632 dprintk(verbose, DST_CA_DEBUG, 1, " Device closed.");
633
634 return 0;
635}
636
637static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
638{
639 dprintk(verbose, DST_CA_DEBUG, 1, " Device read.");
640
641 return 0;
642}
643
644static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset)
645{
646 dprintk(verbose, DST_CA_DEBUG, 1, " Device write.");
647
648 return 0;
649}
650
651static const struct file_operations dst_ca_fops = {
652 .owner = THIS_MODULE,
653 .unlocked_ioctl = dst_ca_ioctl,
654 .open = dst_ca_open,
655 .release = dst_ca_release,
656 .read = dst_ca_read,
657 .write = dst_ca_write,
658 .llseek = noop_llseek,
659};
660
661static struct dvb_device dvbdev_ca = {
662 .priv = NULL,
663 .users = 1,
664 .readers = 1,
665 .writers = 1,
666 .fops = &dst_ca_fops
667};
668
669struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
670{
671 struct dvb_device *dvbdev;
672
673 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
674 if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst,
675 DVB_DEVICE_CA, 0) == 0) {
676 dst->dst_ca = dvbdev;
677 return dst->dst_ca;
678 }
679
680 return NULL;
681}
682
683EXPORT_SYMBOL(dst_ca_attach);
684
685MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
686MODULE_AUTHOR("Manu Abraham");
687MODULE_LICENSE("GPL");
688
