1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* FireDTV driver (formerly known as FireSAT)
*
* Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
* Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
*/
#include <linux/device.h>
#include <linux/dvb/ca.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <media/dvbdev.h>
#include "firedtv.h"
#define EN50221_TAG_APP_INFO_ENQUIRY 0x9f8020
#define EN50221_TAG_CA_INFO_ENQUIRY 0x9f8030
#define EN50221_TAG_CA_PMT 0x9f8032
#define EN50221_TAG_ENTER_MENU 0x9f8022
static int fdtv_ca_ready(struct firedtv_tuner_status *stat)
{
return stat->ca_initialization_status == 1 &&
stat->ca_error_flag == 0 &&
stat->ca_dvb_flag == 1 &&
stat->ca_module_present_status == 1;
}
static int fdtv_get_ca_flags(struct firedtv_tuner_status *stat)
{
int flags = 0;
if (stat->ca_module_present_status == 1)
flags |= CA_CI_MODULE_PRESENT;
if (stat->ca_initialization_status == 1 &&
stat->ca_error_flag == 0 &&
stat->ca_dvb_flag == 1)
flags |= CA_CI_MODULE_READY;
return flags;
}
static int fdtv_ca_get_caps(void *arg)
{
struct ca_caps *cap = arg;
cap->slot_num = 1;
cap->slot_type = CA_CI;
cap->descr_num = 1;
cap->descr_type = CA_ECD;
return 0;
}
static int fdtv_ca_get_slot_info(struct firedtv *fdtv, void *arg)
{
struct firedtv_tuner_status stat;
struct ca_slot_info *slot = arg;
int err;
err = avc_tuner_status(fdtv, &stat);
if (err)
return err;
if (slot->num != 0)
return -EACCES;
slot->type = CA_CI;
slot->flags = fdtv_get_ca_flags(&stat);
return 0;
}
static int fdtv_ca_app_info(struct firedtv *fdtv, void *arg)
{
struct ca_msg *reply = arg;
return avc_ca_app_info(fdtv, reply->msg, &reply->length);
}
static int fdtv_ca_info(struct firedtv *fdtv, void *arg)
{
struct ca_msg *reply = arg;
return avc_ca_info(fdtv, reply->msg, &reply->length);
}
static int fdtv_ca_get_mmi(struct firedtv *fdtv, void *arg)
{
struct ca_msg *reply = arg;
return avc_ca_get_mmi(fdtv, reply->msg, &reply->length);
}
static int fdtv_ca_get_msg(struct firedtv *fdtv, void *arg)
{
struct firedtv_tuner_status stat;
int err;
switch (fdtv->ca_last_command) {
case EN50221_TAG_APP_INFO_ENQUIRY:
err = fdtv_ca_app_info(fdtv, arg);
break;
case EN50221_TAG_CA_INFO_ENQUIRY:
err = fdtv_ca_info(fdtv, arg);
break;
default:
err = avc_tuner_status(fdtv, &stat);
if (err)
break;
if (stat.ca_mmi == 1)
err = fdtv_ca_get_mmi(fdtv, arg);
else {
dev_info(fdtv->device, "unhandled CA message 0x%08x\n",
fdtv->ca_last_command);
err = -EACCES;
}
}
fdtv->ca_last_command = 0;
return err;
}
static int fdtv_ca_pmt(struct firedtv *fdtv, void *arg)
{
struct ca_msg *msg = arg;
int data_pos;
int data_length;
int i;
data_pos = 4;
if (msg->msg[3] & 0x80) {
data_length = 0;
for (i = 0; i < (msg->msg[3] & 0x7f); i++)
data_length = (data_length << 8) + msg->msg[data_pos++];
} else {
data_length = msg->msg[3];
}
return avc_ca_pmt(fdtv, &msg->msg[data_pos], data_length);
}
static int fdtv_ca_send_msg(struct firedtv *fdtv, void *arg)
{
struct ca_msg *msg = arg;
int err;
/* Do we need a semaphore for this? */
fdtv->ca_last_command =
(msg->msg[0] << 16) + (msg->msg[1] << 8) + msg->msg[2];
switch (fdtv->ca_last_command) {
case EN50221_TAG_CA_PMT:
err = fdtv_ca_pmt(fdtv, arg);
break;
case EN50221_TAG_APP_INFO_ENQUIRY:
/* handled in ca_get_msg */
err = 0;
break;
case EN50221_TAG_CA_INFO_ENQUIRY:
/* handled in ca_get_msg */
err = 0;
break;
case EN50221_TAG_ENTER_MENU:
err = avc_ca_enter_menu(fdtv);
break;
default:
dev_err(fdtv->device, "unhandled CA message 0x%08x\n",
fdtv->ca_last_command);
err = -EACCES;
}
return err;
}
static int fdtv_ca_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct dvb_device *dvbdev = file->private_data;
struct firedtv *fdtv = dvbdev->priv;
struct firedtv_tuner_status stat;
int err;
switch (cmd) {
case CA_RESET:
err = avc_ca_reset(fdtv);
break;
case CA_GET_CAP:
err = fdtv_ca_get_caps(arg);
break;
case CA_GET_SLOT_INFO:
err = fdtv_ca_get_slot_info(fdtv, arg);
break;
case CA_GET_MSG:
err = fdtv_ca_get_msg(fdtv, arg);
break;
case CA_SEND_MSG:
err = fdtv_ca_send_msg(fdtv, arg);
break;
default:
dev_info(fdtv->device, "unhandled CA ioctl %u\n", cmd);
err = -EOPNOTSUPP;
}
/* FIXME Is this necessary? */
avc_tuner_status(fdtv, &stat);
return err;
}
static __poll_t fdtv_ca_io_poll(struct file *file, poll_table *wait)
{
return EPOLLIN;
}
static const struct file_operations fdtv_ca_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = dvb_generic_ioctl,
.open = dvb_generic_open,
.release = dvb_generic_release,
.poll = fdtv_ca_io_poll,
.llseek = noop_llseek,
};
static const struct dvb_device fdtv_ca = {
.users = 1,
.readers = 1,
.writers = 1,
.fops = &fdtv_ca_fops,
.kernel_ioctl = fdtv_ca_ioctl,
};
int fdtv_ca_register(struct firedtv *fdtv)
{
struct firedtv_tuner_status stat;
int err;
if (avc_tuner_status(fdtv, &stat))
return -EINVAL;
if (!fdtv_ca_ready(&stat))
return -EFAULT;
err = dvb_register_device(&fdtv->adapter, &fdtv->cadev,
&fdtv_ca, fdtv, DVB_DEVICE_CA, 0);
if (stat.ca_application_info == 0)
dev_err(fdtv->device, "CaApplicationInfo is not set\n");
if (stat.ca_date_time_request == 1)
avc_ca_get_time_date(fdtv, &fdtv->ca_time_interval);
return err;
}
void fdtv_ca_release(struct firedtv *fdtv)
{
dvb_unregister_device(fdtv->cadev);
}
|
