2 CA-driver for TwinHan DST Frontend/Card
4 Copyright (C) 2004, 2005 Manu Abraham (manu@kromtek.com)
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/string.h>
25 #include <linux/dvb/ca.h>
27 #include "dvb_frontend.h"
29 #include "dst_common.h"
31 #define DST_CA_ERROR 0
32 #define DST_CA_NOTICE 1
34 #define DST_CA_DEBUG 3
36 #define dprintk(x, y, z, format, arg...) do { \
38 if ((x > DST_CA_ERROR) && (x > y)) \
39 printk(KERN_ERR "%s: " format "\n", __FUNCTION__ , ##arg); \
40 else if ((x > DST_CA_NOTICE) && (x > y)) \
41 printk(KERN_NOTICE "%s: " format "\n", __FUNCTION__ , ##arg); \
42 else if ((x > DST_CA_INFO) && (x > y)) \
43 printk(KERN_INFO "%s: " format "\n", __FUNCTION__ , ##arg); \
44 else if ((x > DST_CA_DEBUG) && (x > y)) \
45 printk(KERN_DEBUG "%s: " format "\n", __FUNCTION__ , ##arg); \
48 printk(format, ## arg); \
53 static unsigned int verbose = 5;
54 module_param(verbose, int, 0644);
55 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
57 /* Need some more work */
58 static int ca_set_slot_descr(void)
60 /* We could make this more graceful ? */
64 /* Need some more work */
65 static int ca_set_pid(void)
67 /* We could make this more graceful ? */
72 static void put_checksum(u8 *check_string, int length)
74 dprintk(verbose, DST_CA_DEBUG, 1, " Computing string checksum.");
75 dprintk(verbose, DST_CA_DEBUG, 1, " -> string length : 0x%02x", length);
76 check_string[length] = dst_check_sum (check_string, length);
77 dprintk(verbose, DST_CA_DEBUG, 1, " -> checksum : 0x%02x", check_string[length]);
80 static int dst_ci_command(struct dst_state* state, u8 * data, u8 *ca_string, u8 len, int read)
84 mutex_lock(&state->dst_mutex);
88 if (write_dst(state, data, len)) {
89 dprintk(verbose, DST_CA_INFO, 1, " Write not successful, trying to recover");
90 dst_error_recovery(state);
93 if ((dst_pio_disable(state)) < 0) {
94 dprintk(verbose, DST_CA_ERROR, 1, " DST PIO disable failed.");
97 if (read_dst(state, &reply, GET_ACK) < 0) {
98 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover");
99 dst_error_recovery(state);
103 if (! dst_wait_dst_ready(state, LONG_DELAY)) {
104 dprintk(verbose, DST_CA_NOTICE, 1, " 8820 not ready");
107 if (read_dst(state, ca_string, 128) < 0) { /* Try to make this dynamic */
108 dprintk(verbose, DST_CA_INFO, 1, " Read not successful, trying to recover");
109 dst_error_recovery(state);
113 mutex_unlock(&state->dst_mutex);
117 mutex_unlock(&state->dst_mutex);
122 static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string, int read)
124 u8 dst_ca_comm_err = 0;
126 while (dst_ca_comm_err < RETRIES) {
127 dst_comm_init(state);
128 dprintk(verbose, DST_CA_NOTICE, 1, " Put Command");
129 if (dst_ci_command(state, data, ca_string, len, read)) { // If error
130 dst_error_recovery(state);
131 dst_ca_comm_err++; // work required here.
141 static int ca_get_app_info(struct dst_state *state)
143 static u8 command[8] = {0x07, 0x40, 0x01, 0x00, 0x01, 0x00, 0x00, 0xff};
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 !");
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], __FUNCTION__, (char *)(&state->messages[12]));
155 dprintk(verbose, DST_CA_INFO, 1, " ==================================================================================================");
160 static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps, void __user *arg)
164 static u8 slot_command[8] = {0x07, 0x40, 0x02, 0x00, 0x02, 0x00, 0x00, 0xff};
166 put_checksum(&slot_command[0], slot_command[0]);
167 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) {
168 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
171 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
173 /* Will implement the rest soon */
175 dprintk(verbose, DST_CA_INFO, 1, " Slot cap = [%d]", slot_cap[7]);
176 dprintk(verbose, DST_CA_INFO, 0, "===================================\n");
177 for (i = 0; i < 8; i++)
178 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_cap[i]);
179 dprintk(verbose, DST_CA_INFO, 0, "\n");
181 p_ca_caps->slot_num = 1;
182 p_ca_caps->slot_type = 1;
183 p_ca_caps->descr_num = slot_cap[7];
184 p_ca_caps->descr_type = 1;
186 if (copy_to_user(arg, p_ca_caps, sizeof (struct ca_caps)))
192 /* Need some more work */
193 static int ca_get_slot_descr(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
199 static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_slot_info, void __user *arg)
202 static u8 slot_command[8] = {0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff};
204 u8 *slot_info = state->messages;
206 put_checksum(&slot_command[0], 7);
207 if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) {
208 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
211 dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
213 /* Will implement the rest soon */
215 dprintk(verbose, DST_CA_INFO, 1, " Slot info = [%d]", slot_info[3]);
216 dprintk(verbose, DST_CA_INFO, 0, "===================================\n");
217 for (i = 0; i < 8; i++)
218 dprintk(verbose, DST_CA_INFO, 0, " %d", slot_info[i]);
219 dprintk(verbose, DST_CA_INFO, 0, "\n");
221 if (slot_info[4] & 0x80) {
222 p_ca_slot_info->flags = CA_CI_MODULE_PRESENT;
223 p_ca_slot_info->num = 1;
224 p_ca_slot_info->type = CA_CI;
225 } else if (slot_info[4] & 0x40) {
226 p_ca_slot_info->flags = CA_CI_MODULE_READY;
227 p_ca_slot_info->num = 1;
228 p_ca_slot_info->type = CA_CI;
230 p_ca_slot_info->flags = 0;
232 if (copy_to_user(arg, p_ca_slot_info, sizeof (struct ca_slot_info)))
239 static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
244 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg)))
247 if (p_ca_message->msg) {
248 dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%02x %02x %02x]", p_ca_message->msg[0], p_ca_message->msg[1], p_ca_message->msg[2]);
250 for (i = 0; i < 3; i++) {
251 command = command | p_ca_message->msg[i];
253 command = command << 8;
255 dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command);
259 memcpy(p_ca_message->msg, state->messages, 128);
260 if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
269 static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u32 length)
271 if (state->dst_hw_cap & DST_TYPE_HAS_SESSION) {
272 hw_buffer->msg[2] = p_ca_message->msg[1]; /* MSB */
273 hw_buffer->msg[3] = p_ca_message->msg[2]; /* LSB */
276 dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !");
279 hw_buffer->msg[0] = (length & 0xff) + 7;
280 hw_buffer->msg[1] = 0x40;
281 hw_buffer->msg[2] = 0x03;
282 hw_buffer->msg[3] = 0x00;
283 hw_buffer->msg[4] = 0x03;
284 hw_buffer->msg[5] = length & 0xff;
285 hw_buffer->msg[6] = 0x00;
288 * Need to compute length for EN50221 section 8.3.2, for the time being
289 * assuming 8.3.2 is not applicable
291 memcpy(&hw_buffer->msg[7], &p_ca_message->msg[4], length);
297 static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 length, u8 reply)
299 if ((dst_put_ci(state, hw_buffer->msg, length, hw_buffer->msg, reply)) < 0) {
300 dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed.");
301 dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST.");
302 rdc_reset_state(state);
305 dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command succes.");
310 static u32 asn_1_decode(u8 *asn_1_array)
312 u8 length_field = 0, word_count = 0, count = 0;
315 length_field = asn_1_array[0];
316 dprintk(verbose, DST_CA_DEBUG, 1, " Length field=[%02x]", length_field);
317 if (length_field < 0x80) {
318 length = length_field & 0x7f;
319 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%02x]\n", length);
321 word_count = length_field & 0x7f;
322 for (count = 0; count < word_count; count++) {
323 length = length << 8;
324 length += asn_1_array[count + 1];
325 dprintk(verbose, DST_CA_DEBUG, 1, " Length=[%04x]", length);
331 static int debug_string(u8 *msg, u32 length, u32 offset)
335 dprintk(verbose, DST_CA_DEBUG, 0, " String=[ ");
336 for (i = offset; i < length; i++)
337 dprintk(verbose, DST_CA_DEBUG, 0, "%02x ", msg[i]);
338 dprintk(verbose, DST_CA_DEBUG, 0, "]\n");
344 static int ca_get_mmi(struct dst_state *state, struct ca_msg *hw_msg, struct ca_msg *mmi_msg)
346 static u8 get_mmi[] = { 0x07, 0x40, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x0f };
348 put_checksum(&get_mmi[0], 7);
349 if ((dst_put_ci(state, get_mmi, sizeof (get_mmi), hw_msg->msg, GET_REPLY)) < 0) {
350 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
353 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
354 memcpy(mmi_msg->msg, hw_msg->msg, hw_msg->msg[4]);
360 * Get Menu should be the first MMI function (like open !)
362 static int ca_get_menu(struct dst_state *state)
364 static u8 get_menu[] = { 0x07, 0x40, 0x00, 0x00, 0x09, 0x00, 0x00, 0xff };
366 put_checksum(&get_menu[0], 7);
367 if ((dst_put_ci(state, get_menu, sizeof (get_menu), get_menu, NO_REPLY)) < 0) {
368 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
371 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
377 * MMI Enq (Enquire the application to allow user input)
379 static int ca_answer_menu(struct dst_state *state, struct ca_msg *hw_msg, struct ca_msg *menu_answ)
383 static u8 answer_menu[] = { 0x08, 0x40, 0x00, 0x00, 0x0b, 0x01, 0x00, 0x01, 0xff };
385 /* derive answer from menu (This comes from the user) */
386 answer_menu[7] = choice;
387 put_checksum(&answer_menu[0], 7);
388 if ((dst_put_ci(state, answer_menu, sizeof (answer_menu), hw_msg->msg, NO_REPLY)) < 0) {
389 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
392 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
397 static int ca_answer_mmi(struct dst_state *state, struct ca_msg *hw_msg, struct ca_msg *answ_msg)
399 u8 answer =0, length = 0;
401 static u8 answer_mmi[] = { 0x08, 0x40, 0x00, 0x00, 0x08, 0x01, 0x00, 0x01, 0xff };
403 /* derive answer from answ_msg (This comes from the user) */
404 if (answer == 0) /* 0x00 == Cancel */
405 answer_mmi[7] = 0x00;
406 else { /* 0x01 == Answer */
407 length = strlen(answ_msg->msg);
408 memcpy(&answer_mmi[8], answ_msg->msg, length);
409 answer_mmi[0] += length;
410 answer_mmi[5] += length;
412 put_checksum(&answer_mmi[0], (8 + length));
413 if ((dst_put_ci(state, answer_mmi, sizeof (answer_mmi), hw_msg->msg, GET_REPLY)) < 0) {
414 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci FAILED !");
418 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
423 static int ca_close_mmi(struct dst_state *state, struct ca_msg *hw_msg)
425 static u8 close_mmi[] = { 0x07, 0x40, 0x00, 0x00, 0x0e, 0x00, 0x00, 0xff };
427 put_checksum(&close_mmi[0], 7);
428 if ((dst_put_ci(state, close_mmi, sizeof (close_mmi), hw_msg->msg, NO_REPLY)) < 0) {
429 dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
433 dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
438 static int ca_set_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer, u8 reply, u8 query)
443 length = asn_1_decode(&p_ca_message->msg[3]);
444 dprintk(verbose, DST_CA_DEBUG, 1, " CA Message length=[%d]", length);
445 debug_string(&p_ca_message->msg[4], length, 0); /* length is excluding tag & length */
447 memset(hw_buffer->msg, '\0', length);
448 handle_dst_tag(state, p_ca_message, hw_buffer, length);
449 put_checksum(hw_buffer->msg, hw_buffer->msg[0]);
451 debug_string(hw_buffer->msg, (length + tag_length), 0); /* tags too */
452 write_to_8820(state, hw_buffer, (length + tag_length), reply);
458 /* Board supports CA PMT reply ? */
459 static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message, struct ca_msg *hw_buffer)
461 int ca_pmt_reply_test = 0;
464 /* Not there yet but soon */
466 /* CA PMT Reply capable */
467 if (ca_pmt_reply_test) {
468 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
469 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
473 /* Process CA PMT Reply */
474 /* will implement soon */
475 dprintk(verbose, DST_CA_ERROR, 1, " Not there yet");
477 /* CA PMT Reply not capable */
478 if (!ca_pmt_reply_test) {
479 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
480 dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
483 dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !");
484 /* put a dummy message */
490 static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
493 unsigned int ca_message_header_len;
496 struct ca_msg *hw_buffer;
499 if ((hw_buffer = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
500 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
503 dprintk(verbose, DST_CA_DEBUG, 1, " ");
505 if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) {
507 goto free_mem_and_exit;
511 if (p_ca_message->msg) {
512 ca_message_header_len = p_ca_message->length; /* Restore it back when you are done */
516 for (i = 0; i < 3; i++) {
517 command = command | p_ca_message->msg[i];
519 command = command << 8;
521 dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
525 dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
526 if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
527 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
529 goto free_mem_and_exit;
531 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
534 dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
535 /* Have to handle the 2 basic types of cards here */
536 if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
537 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
539 goto free_mem_and_exit;
541 dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
543 case CA_APP_INFO_ENQUIRY: // only for debugging
544 dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
546 if ((ca_get_app_info(state)) < 0) {
547 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
549 goto free_mem_and_exit;
551 dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
561 static int dst_ca_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long ioctl_arg)
563 struct dvb_device* dvbdev = (struct dvb_device*) file->private_data;
564 struct dst_state* state = (struct dst_state*) dvbdev->priv;
565 struct ca_slot_info *p_ca_slot_info;
566 struct ca_caps *p_ca_caps;
567 struct ca_msg *p_ca_message;
568 void __user *arg = (void __user *)ioctl_arg;
571 if ((p_ca_message = (struct ca_msg *) kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
572 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
575 if ((p_ca_slot_info = (struct ca_slot_info *) kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL)) == NULL) {
576 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
579 if ((p_ca_caps = (struct ca_caps *) kmalloc(sizeof (struct ca_caps), GFP_KERNEL)) == NULL) {
580 dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
583 /* We have now only the standard ioctl's, the driver is upposed to handle internals. */
586 dprintk(verbose, DST_CA_INFO, 1, " Sending message");
587 if ((ca_send_message(state, p_ca_message, arg)) < 0) {
588 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !");
590 goto free_mem_and_exit;
594 dprintk(verbose, DST_CA_INFO, 1, " Getting message");
595 if ((ca_get_message(state, p_ca_message, arg)) < 0) {
596 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !");
598 goto free_mem_and_exit;
600 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !");
603 dprintk(verbose, DST_CA_ERROR, 1, " Resetting DST");
604 dst_error_bailout(state);
607 case CA_GET_SLOT_INFO:
608 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info");
609 if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
610 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !");
612 goto free_mem_and_exit;
614 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_SLOT_INFO Success !");
617 dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities");
618 if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
619 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !");
621 goto free_mem_and_exit;
623 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !");
625 case CA_GET_DESCR_INFO:
626 dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description");
627 if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
628 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !");
630 goto free_mem_and_exit;
632 dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !");
635 dprintk(verbose, DST_CA_INFO, 1, " Setting descrambler");
636 if ((ca_set_slot_descr()) < 0) {
637 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_DESCR Failed !");
639 goto free_mem_and_exit;
641 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_DESCR Success !");
644 dprintk(verbose, DST_CA_INFO, 1, " Setting PID");
645 if ((ca_set_pid()) < 0) {
646 dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_PID Failed !");
648 goto free_mem_and_exit;
650 dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_PID Success !");
652 result = -EOPNOTSUPP;
655 kfree (p_ca_message);
656 kfree (p_ca_slot_info);
662 static int dst_ca_open(struct inode *inode, struct file *file)
664 dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file);
665 try_module_get(THIS_MODULE);
670 static int dst_ca_release(struct inode *inode, struct file *file)
672 dprintk(verbose, DST_CA_DEBUG, 1, " Device closed.");
673 module_put(THIS_MODULE);
678 static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
680 ssize_t bytes_read = 0;
682 dprintk(verbose, DST_CA_DEBUG, 1, " Device read.");
687 static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset)
689 dprintk(verbose, DST_CA_DEBUG, 1, " Device write.");
694 static struct file_operations dst_ca_fops = {
695 .owner = THIS_MODULE,
696 .ioctl = dst_ca_ioctl,
698 .release = dst_ca_release,
700 .write = dst_ca_write
703 static struct dvb_device dvbdev_ca = {
711 int dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_adapter)
713 struct dvb_device *dvbdev;
714 dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
715 dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA);
719 EXPORT_SYMBOL(dst_ca_attach);
721 MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
722 MODULE_AUTHOR("Manu Abraham");
723 MODULE_LICENSE("GPL");