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path: root/drivers/media/firewire/firedtv-ci.c
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Diffstat (limited to 'drivers/media/firewire/firedtv-ci.c')
-rw-r--r--drivers/media/firewire/firedtv-ci.c258
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/media/firewire/firedtv-ci.c b/drivers/media/firewire/firedtv-ci.c
new file mode 100644
index 000000000000..e5ebdbfe8c19
--- /dev/null
+++ b/drivers/media/firewire/firedtv-ci.c
@@ -0,0 +1,258 @@
1/*
2 * FireDTV driver (formerly known as FireSAT)
3 *
4 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
5 * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 */
12
13#include <linux/device.h>
14#include <linux/dvb/ca.h>
15#include <linux/fs.h>
16#include <linux/module.h>
17
18#include <dvbdev.h>
19
20#include "firedtv.h"
21
22#define EN50221_TAG_APP_INFO_ENQUIRY 0x9f8020
23#define EN50221_TAG_CA_INFO_ENQUIRY 0x9f8030
24#define EN50221_TAG_CA_PMT 0x9f8032
25#define EN50221_TAG_ENTER_MENU 0x9f8022
26
27static int fdtv_ca_ready(struct firedtv_tuner_status *stat)
28{
29 return stat->ca_initialization_status == 1 &&
30 stat->ca_error_flag == 0 &&
31 stat->ca_dvb_flag == 1 &&
32 stat->ca_module_present_status == 1;
33}
34
35static int fdtv_get_ca_flags(struct firedtv_tuner_status *stat)
36{
37 int flags = 0;
38
39 if (stat->ca_module_present_status == 1)
40 flags |= CA_CI_MODULE_PRESENT;
41 if (stat->ca_initialization_status == 1 &&
42 stat->ca_error_flag == 0 &&
43 stat->ca_dvb_flag == 1)
44 flags |= CA_CI_MODULE_READY;
45 return flags;
46}
47
48static int fdtv_ca_get_caps(void *arg)
49{
50 struct ca_caps *cap = arg;
51
52 cap->slot_num = 1;
53 cap->slot_type = CA_CI;
54 cap->descr_num = 1;
55 cap->descr_type = CA_ECD;
56 return 0;
57}
58
59static int fdtv_ca_get_slot_info(struct firedtv *fdtv, void *arg)
60{
61 struct firedtv_tuner_status stat;
62 struct ca_slot_info *slot = arg;
63 int err;
64
65 err = avc_tuner_status(fdtv, &stat);
66 if (err)
67 return err;
68
69 if (slot->num != 0)
70 return -EACCES;
71
72 slot->type = CA_CI;
73 slot->flags = fdtv_get_ca_flags(&stat);
74 return 0;
75}
76
77static int fdtv_ca_app_info(struct firedtv *fdtv, void *arg)
78{
79 struct ca_msg *reply = arg;
80
81 return avc_ca_app_info(fdtv, reply->msg, &reply->length);
82}
83
84static int fdtv_ca_info(struct firedtv *fdtv, void *arg)
85{
86 struct ca_msg *reply = arg;
87
88 return avc_ca_info(fdtv, reply->msg, &reply->length);
89}
90
91static int fdtv_ca_get_mmi(struct firedtv *fdtv, void *arg)
92{
93 struct ca_msg *reply = arg;
94
95 return avc_ca_get_mmi(fdtv, reply->msg, &reply->length);
96}
97
98static int fdtv_ca_get_msg(struct firedtv *fdtv, void *arg)
99{
100 struct firedtv_tuner_status stat;
101 int err;
102
103 switch (fdtv->ca_last_command) {
104 case EN50221_TAG_APP_INFO_ENQUIRY:
105 err = fdtv_ca_app_info(fdtv, arg);
106 break;
107 case EN50221_TAG_CA_INFO_ENQUIRY:
108 err = fdtv_ca_info(fdtv, arg);
109 break;
110 default:
111 err = avc_tuner_status(fdtv, &stat);
112 if (err)
113 break;
114 if (stat.ca_mmi == 1)
115 err = fdtv_ca_get_mmi(fdtv, arg);
116 else {
117 dev_info(fdtv->device, "unhandled CA message 0x%08x\n",
118 fdtv->ca_last_command);
119 err = -EACCES;
120 }
121 }
122 fdtv->ca_last_command = 0;
123 return err;
124}
125
126static int fdtv_ca_pmt(struct firedtv *fdtv, void *arg)
127{
128 struct ca_msg *msg = arg;
129 int data_pos;
130 int data_length;
131 int i;
132
133 data_pos = 4;
134 if (msg->msg[3] & 0x80) {
135 data_length = 0;
136 for (i = 0; i < (msg->msg[3] & 0x7f); i++)
137 data_length = (data_length << 8) + msg->msg[data_pos++];
138 } else {
139 data_length = msg->msg[3];
140 }
141
142 return avc_ca_pmt(fdtv, &msg->msg[data_pos], data_length);
143}
144
145static int fdtv_ca_send_msg(struct firedtv *fdtv, void *arg)
146{
147 struct ca_msg *msg = arg;
148 int err;
149
150 /* Do we need a semaphore for this? */
151 fdtv->ca_last_command =
152 (msg->msg[0] << 16) + (msg->msg[1] << 8) + msg->msg[2];
153 switch (fdtv->ca_last_command) {
154 case EN50221_TAG_CA_PMT:
155 err = fdtv_ca_pmt(fdtv, arg);
156 break;
157 case EN50221_TAG_APP_INFO_ENQUIRY:
158 /* handled in ca_get_msg */
159 err = 0;
160 break;
161 case EN50221_TAG_CA_INFO_ENQUIRY:
162 /* handled in ca_get_msg */
163 err = 0;
164 break;
165 case EN50221_TAG_ENTER_MENU:
166 err = avc_ca_enter_menu(fdtv);
167 break;
168 default:
169 dev_err(fdtv->device, "unhandled CA message 0x%08x\n",
170 fdtv->ca_last_command);
171 err = -EACCES;
172 }
173 return err;
174}
175
176static int fdtv_ca_ioctl(struct file *file, unsigned int cmd, void *arg)
177{
178 struct dvb_device *dvbdev = file->private_data;
179 struct firedtv *fdtv = dvbdev->priv;
180 struct firedtv_tuner_status stat;
181 int err;
182
183 switch (cmd) {
184 case CA_RESET:
185 err = avc_ca_reset(fdtv);
186 break;
187 case CA_GET_CAP:
188 err = fdtv_ca_get_caps(arg);
189 break;
190 case CA_GET_SLOT_INFO:
191 err = fdtv_ca_get_slot_info(fdtv, arg);
192 break;
193 case CA_GET_MSG:
194 err = fdtv_ca_get_msg(fdtv, arg);
195 break;
196 case CA_SEND_MSG:
197 err = fdtv_ca_send_msg(fdtv, arg);
198 break;
199 default:
200 dev_info(fdtv->device, "unhandled CA ioctl %u\n", cmd);
201 err = -EOPNOTSUPP;
202 }
203
204 /* FIXME Is this necessary? */
205 avc_tuner_status(fdtv, &stat);
206
207 return err;
208}
209
210static unsigned int fdtv_ca_io_poll(struct file *file, poll_table *wait)
211{
212 return POLLIN;
213}
214
215static const struct file_operations fdtv_ca_fops = {
216 .owner = THIS_MODULE,
217 .unlocked_ioctl = dvb_generic_ioctl,
218 .open = dvb_generic_open,
219 .release = dvb_generic_release,
220 .poll = fdtv_ca_io_poll,
221 .llseek = noop_llseek,
222};
223
224static struct dvb_device fdtv_ca = {
225 .users = 1,
226 .readers = 1,
227 .writers = 1,
228 .fops = &fdtv_ca_fops,
229 .kernel_ioctl = fdtv_ca_ioctl,
230};
231
232int fdtv_ca_register(struct firedtv *fdtv)
233{
234 struct firedtv_tuner_status stat;
235 int err;
236
237 if (avc_tuner_status(fdtv, &stat))
238 return -EINVAL;
239
240 if (!fdtv_ca_ready(&stat))
241 return -EFAULT;
242
243 err = dvb_register_device(&fdtv->adapter, &fdtv->cadev,
244 &fdtv_ca, fdtv, DVB_DEVICE_CA);
245
246 if (stat.ca_application_info == 0)
247 dev_err(fdtv->device, "CaApplicationInfo is not set\n");
248 if (stat.ca_date_time_request == 1)
249 avc_ca_get_time_date(fdtv, &fdtv->ca_time_interval);
250
251 return err;
252}
253
254void fdtv_ca_release(struct firedtv *fdtv)
255{
256 if (fdtv->cadev)
257 dvb_unregister_device(fdtv->cadev);
258}
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