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path: root/drivers/media/pci/bt8xx/dst_ca.c
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Diffstat (limited to 'drivers/media/pci/bt8xx/dst_ca.c')
-rw-r--r--drivers/media/pci/bt8xx/dst_ca.c247
1 files changed, 98 insertions, 149 deletions
diff --git a/drivers/media/pci/bt8xx/dst_ca.c b/drivers/media/pci/bt8xx/dst_ca.c
index 0e788fca992c..a9cc6e7a57f9 100644
--- a/drivers/media/pci/bt8xx/dst_ca.c
+++ b/drivers/media/pci/bt8xx/dst_ca.c
@@ -1,21 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
CA-driver for TwinHan DST Frontend/Card
Copyright (C) 2004, 2005 Manu Abraham (manu@kromtek.com)
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
@@ -25,8 +13,8 @@
#include <linux/mutex.h>
#include <linux/string.h>
#include <linux/dvb/ca.h>
-#include "dvbdev.h"
-#include "dvb_frontend.h"
+#include <media/dvbdev.h>
+#include <media/dvb_frontend.h>
#include "dst_ca.h"
#include "dst_common.h"
@@ -57,20 +45,6 @@ static unsigned int verbose = 5;
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "verbose startup messages, default is 1 (yes)");
-/* Need some more work */
-static int ca_set_slot_descr(void)
-{
- /* We could make this more graceful ? */
- return -EOPNOTSUPP;
-}
-
-/* Need some more work */
-static int ca_set_pid(void)
-{
- /* We could make this more graceful ? */
- return -EOPNOTSUPP;
-}
-
static void put_command_and_length(u8 *data, int command, int length)
{
data[0] = (command >> 16) & 0xff;
@@ -144,7 +118,7 @@ static int dst_put_ci(struct dst_state *state, u8 *data, int len, u8 *ca_string,
}
if(dst_ca_comm_err == RETRIES)
- return -1;
+ return -EIO;
return 0;
}
@@ -159,7 +133,7 @@ static int ca_get_app_info(struct dst_state *state)
put_checksum(&command[0], command[0]);
if ((dst_put_ci(state, command, sizeof(command), state->messages, GET_REPLY)) < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
- return -1;
+ return -EIO;
}
dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
dprintk(verbose, DST_CA_INFO, 1, " ================================ CI Module Application Info ======================================");
@@ -198,7 +172,7 @@ static int ca_get_ca_info(struct dst_state *state)
put_checksum(&slot_command[0], slot_command[0]);
if ((dst_put_ci(state, slot_command, sizeof (slot_command), state->messages, GET_REPLY)) < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
- return -1;
+ return -EIO;
}
dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
@@ -242,7 +216,7 @@ static int ca_get_slot_caps(struct dst_state *state, struct ca_caps *p_ca_caps,
put_checksum(&slot_command[0], slot_command[0]);
if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_cap, GET_REPLY)) < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
- return -1;
+ return -EIO;
}
dprintk(verbose, DST_CA_NOTICE, 1, " -->dst_put_ci SUCCESS !");
@@ -282,7 +256,7 @@ static int ca_get_slot_info(struct dst_state *state, struct ca_slot_info *p_ca_s
put_checksum(&slot_command[0], 7);
if ((dst_put_ci(state, slot_command, sizeof (slot_command), slot_info, GET_REPLY)) < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->dst_put_ci FAILED !");
- return -1;
+ return -EIO;
}
dprintk(verbose, DST_CA_INFO, 1, " -->dst_put_ci SUCCESS !");
@@ -320,29 +294,27 @@ static int ca_get_message(struct dst_state *state, struct ca_msg *p_ca_message,
if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg)))
return -EFAULT;
- if (p_ca_message->msg) {
- dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]",
- 3, p_ca_message->msg);
+ dprintk(verbose, DST_CA_NOTICE, 1, " Message = [%*ph]",
+ 3, p_ca_message->msg);
- for (i = 0; i < 3; i++) {
- command = command | p_ca_message->msg[i];
- if (i < 2)
- command = command << 8;
- }
- dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command);
+ for (i = 0; i < 3; i++) {
+ command = command | p_ca_message->msg[i];
+ if (i < 2)
+ command = command << 8;
+ }
+ dprintk(verbose, DST_CA_NOTICE, 1, " Command=[0x%x]", command);
- switch (command) {
- case CA_APP_INFO:
- memcpy(p_ca_message->msg, state->messages, 128);
- if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
- return -EFAULT;
- break;
- case CA_INFO:
- memcpy(p_ca_message->msg, state->messages, 128);
- if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
- return -EFAULT;
- break;
- }
+ switch (command) {
+ case CA_APP_INFO:
+ memcpy(p_ca_message->msg, state->messages, 128);
+ if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
+ return -EFAULT;
+ break;
+ case CA_INFO:
+ memcpy(p_ca_message->msg, state->messages, 128);
+ if (copy_to_user(arg, p_ca_message, sizeof (struct ca_msg)) )
+ return -EFAULT;
+ break;
}
return 0;
@@ -356,7 +328,7 @@ static int handle_dst_tag(struct dst_state *state, struct ca_msg *p_ca_message,
} else {
if (length > 247) {
dprintk(verbose, DST_CA_ERROR, 1, " Message too long ! *** Bailing Out *** !");
- return -1;
+ return -EIO;
}
hw_buffer->msg[0] = (length & 0xff) + 7;
hw_buffer->msg[1] = 0x40;
@@ -382,7 +354,7 @@ static int write_to_8820(struct dst_state *state, struct ca_msg *hw_buffer, u8 l
dprintk(verbose, DST_CA_ERROR, 1, " DST-CI Command failed.");
dprintk(verbose, DST_CA_NOTICE, 1, " Resetting DST.");
rdc_reset_state(state);
- return -1;
+ return -EIO;
}
dprintk(verbose, DST_CA_NOTICE, 1, " DST-CI Command success.");
@@ -455,7 +427,7 @@ static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message
if (ca_pmt_reply_test) {
if ((ca_set_pmt(state, p_ca_message, hw_buffer, 1, GET_REPLY)) < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
- return -1;
+ return -EIO;
}
/* Process CA PMT Reply */
@@ -466,7 +438,7 @@ static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message
if (!ca_pmt_reply_test) {
if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, NO_REPLY)) < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " ca_set_pmt.. failed !");
- return -1;
+ return -EIO;
}
dprintk(verbose, DST_CA_NOTICE, 1, " ca_set_pmt.. success !");
/* put a dummy message */
@@ -477,16 +449,14 @@ static int dst_check_ca_pmt(struct dst_state *state, struct ca_msg *p_ca_message
static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message, void __user *arg)
{
- int i = 0;
-
- u32 command = 0;
+ int i;
+ u32 command;
struct ca_msg *hw_buffer;
int result = 0;
- if ((hw_buffer = kmalloc(sizeof (struct ca_msg), GFP_KERNEL)) == NULL) {
- dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
+ hw_buffer = kmalloc(sizeof(*hw_buffer), GFP_KERNEL);
+ if (!hw_buffer)
return -ENOMEM;
- }
dprintk(verbose, DST_CA_DEBUG, 1, " ");
if (copy_from_user(p_ca_message, arg, sizeof (struct ca_msg))) {
@@ -494,60 +464,58 @@ static int ca_send_message(struct dst_state *state, struct ca_msg *p_ca_message,
goto free_mem_and_exit;
}
+ /* EN50221 tag */
+ command = 0;
- if (p_ca_message->msg) {
- /* EN50221 tag */
- command = 0;
+ for (i = 0; i < 3; i++) {
+ command = command | p_ca_message->msg[i];
+ if (i < 2)
+ command = command << 8;
+ }
+ dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
- for (i = 0; i < 3; i++) {
- command = command | p_ca_message->msg[i];
- if (i < 2)
- command = command << 8;
+ switch (command) {
+ case CA_PMT:
+ dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
+ if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
+ dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
+ result = -1;
+ goto free_mem_and_exit;
}
- dprintk(verbose, DST_CA_DEBUG, 1, " Command=[0x%x]\n", command);
-
- switch (command) {
- case CA_PMT:
- dprintk(verbose, DST_CA_DEBUG, 1, "Command = SEND_CA_PMT");
- if ((ca_set_pmt(state, p_ca_message, hw_buffer, 0, 0)) < 0) { // code simplification started
- dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT Failed !");
- result = -1;
- goto free_mem_and_exit;
- }
- dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
- break;
- case CA_PMT_REPLY:
- dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
- /* Have to handle the 2 basic types of cards here */
- if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
- dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
- result = -1;
- goto free_mem_and_exit;
- }
- dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
- break;
- case CA_APP_INFO_ENQUIRY: // only for debugging
- dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
-
- if ((ca_get_app_info(state)) < 0) {
- dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
- result = -1;
- goto free_mem_and_exit;
- }
- dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
- break;
- case CA_INFO_ENQUIRY:
- dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information");
-
- if ((ca_get_ca_info(state)) < 0) {
- dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !");
- result = -1;
- goto free_mem_and_exit;
- }
- dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !");
- break;
+ dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT Success !");
+ break;
+ case CA_PMT_REPLY:
+ dprintk(verbose, DST_CA_INFO, 1, "Command = CA_PMT_REPLY");
+ /* Have to handle the 2 basic types of cards here */
+ if ((dst_check_ca_pmt(state, p_ca_message, hw_buffer)) < 0) {
+ dprintk(verbose, DST_CA_ERROR, 1, " -->CA_PMT_REPLY Failed !");
+ result = -1;
+ goto free_mem_and_exit;
+ }
+ dprintk(verbose, DST_CA_INFO, 1, " -->CA_PMT_REPLY Success !");
+ break;
+ case CA_APP_INFO_ENQUIRY: // only for debugging
+ dprintk(verbose, DST_CA_INFO, 1, " Getting Cam Application information");
+
+ if ((ca_get_app_info(state)) < 0) {
+ dprintk(verbose, DST_CA_ERROR, 1, " -->CA_APP_INFO_ENQUIRY Failed !");
+ result = -1;
+ goto free_mem_and_exit;
}
+ dprintk(verbose, DST_CA_INFO, 1, " -->CA_APP_INFO_ENQUIRY Success !");
+ break;
+ case CA_INFO_ENQUIRY:
+ dprintk(verbose, DST_CA_INFO, 1, " Getting CA Information");
+
+ if ((ca_get_ca_info(state)) < 0) {
+ dprintk(verbose, DST_CA_ERROR, 1, " -->CA_INFO_ENQUIRY Failed !");
+ result = -1;
+ goto free_mem_and_exit;
+ }
+ dprintk(verbose, DST_CA_INFO, 1, " -->CA_INFO_ENQUIRY Success !");
+ break;
}
+
free_mem_and_exit:
kfree (hw_buffer);
@@ -566,12 +534,11 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
mutex_lock(&dst_ca_mutex);
dvbdev = file->private_data;
- state = (struct dst_state *)dvbdev->priv;
+ state = dvbdev->priv;
p_ca_message = kmalloc(sizeof (struct ca_msg), GFP_KERNEL);
p_ca_slot_info = kmalloc(sizeof (struct ca_slot_info), GFP_KERNEL);
p_ca_caps = kmalloc(sizeof (struct ca_caps), GFP_KERNEL);
if (!p_ca_message || !p_ca_slot_info || !p_ca_caps) {
- dprintk(verbose, DST_CA_ERROR, 1, " Memory allocation failure");
result = -ENOMEM;
goto free_mem_and_exit;
}
@@ -580,17 +547,18 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
switch (cmd) {
case CA_SEND_MSG:
dprintk(verbose, DST_CA_INFO, 1, " Sending message");
- if ((ca_send_message(state, p_ca_message, arg)) < 0) {
+ result = ca_send_message(state, p_ca_message, arg);
+
+ if (result < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SEND_MSG Failed !");
- result = -1;
goto free_mem_and_exit;
}
break;
case CA_GET_MSG:
dprintk(verbose, DST_CA_INFO, 1, " Getting message");
- if ((ca_get_message(state, p_ca_message, arg)) < 0) {
+ result = ca_get_message(state, p_ca_message, arg);
+ if (result < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_MSG Failed !");
- result = -1;
goto free_mem_and_exit;
}
dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_MSG Success !");
@@ -602,7 +570,8 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
break;
case CA_GET_SLOT_INFO:
dprintk(verbose, DST_CA_INFO, 1, " Getting Slot info");
- if ((ca_get_slot_info(state, p_ca_slot_info, arg)) < 0) {
+ result = ca_get_slot_info(state, p_ca_slot_info, arg);
+ if (result < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_SLOT_INFO Failed !");
result = -1;
goto free_mem_and_exit;
@@ -611,39 +580,22 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
break;
case CA_GET_CAP:
dprintk(verbose, DST_CA_INFO, 1, " Getting Slot capabilities");
- if ((ca_get_slot_caps(state, p_ca_caps, arg)) < 0) {
+ result = ca_get_slot_caps(state, p_ca_caps, arg);
+ if (result < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_CAP Failed !");
- result = -1;
goto free_mem_and_exit;
}
dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_CAP Success !");
break;
case CA_GET_DESCR_INFO:
dprintk(verbose, DST_CA_INFO, 1, " Getting descrambler description");
- if ((ca_get_slot_descr(state, p_ca_message, arg)) < 0) {
+ result = ca_get_slot_descr(state, p_ca_message, arg);
+ if (result < 0) {
dprintk(verbose, DST_CA_ERROR, 1, " -->CA_GET_DESCR_INFO Failed !");
- result = -1;
goto free_mem_and_exit;
}
dprintk(verbose, DST_CA_INFO, 1, " -->CA_GET_DESCR_INFO Success !");
break;
- case CA_SET_DESCR:
- dprintk(verbose, DST_CA_INFO, 1, " Setting descrambler");
- if ((ca_set_slot_descr()) < 0) {
- dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_DESCR Failed !");
- result = -1;
- goto free_mem_and_exit;
- }
- dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_DESCR Success !");
- break;
- case CA_SET_PID:
- dprintk(verbose, DST_CA_INFO, 1, " Setting PID");
- if ((ca_set_pid()) < 0) {
- dprintk(verbose, DST_CA_ERROR, 1, " -->CA_SET_PID Failed !");
- result = -1;
- goto free_mem_and_exit;
- }
- dprintk(verbose, DST_CA_INFO, 1, " -->CA_SET_PID Success !");
default:
result = -EOPNOTSUPP;
}
@@ -659,7 +611,6 @@ static long dst_ca_ioctl(struct file *file, unsigned int cmd, unsigned long ioct
static int dst_ca_open(struct inode *inode, struct file *file)
{
dprintk(verbose, DST_CA_DEBUG, 1, " Device opened [%p] ", file);
- try_module_get(THIS_MODULE);
return 0;
}
@@ -667,18 +618,15 @@ static int dst_ca_open(struct inode *inode, struct file *file)
static int dst_ca_release(struct inode *inode, struct file *file)
{
dprintk(verbose, DST_CA_DEBUG, 1, " Device closed.");
- module_put(THIS_MODULE);
return 0;
}
static ssize_t dst_ca_read(struct file *file, char __user *buffer, size_t length, loff_t *offset)
{
- ssize_t bytes_read = 0;
-
dprintk(verbose, DST_CA_DEBUG, 1, " Device read.");
- return bytes_read;
+ return 0;
}
static ssize_t dst_ca_write(struct file *file, const char __user *buffer, size_t length, loff_t *offset)
@@ -711,7 +659,8 @@ struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_
struct dvb_device *dvbdev;
dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
- if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA) == 0) {
+ if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst,
+ DVB_DEVICE_CA, 0) == 0) {
dst->dst_ca = dvbdev;
return dst->dst_ca;
}
@@ -719,7 +668,7 @@ struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_
return NULL;
}
-EXPORT_SYMBOL(dst_ca_attach);
+EXPORT_SYMBOL_GPL(dst_ca_attach);
MODULE_DESCRIPTION("DST DVB-S/T/C Combo CA driver");
MODULE_AUTHOR("Manu Abraham");
generated by cgit (git 2.34.1) at 2025-12-26 07:33:38 +0000