aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/firewire/firedtv-dvb.c
blob: eb7496eab130cfb54d5daa39717e61ed3594a695 (plain)
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
/*
 * FireDTV driver (formerly known as FireSAT)
 *
 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
 * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
 *
 *	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.
 */

#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/types.h>

#include <dmxdev.h>
#include <dvb_demux.h>
#include <dvbdev.h>
#include <dvb_frontend.h>

#include "firedtv.h"

static int alloc_channel(struct firedtv *fdtv)
{
	int i;

	for (i = 0; i < 16; i++)
		if (!__test_and_set_bit(i, &fdtv->channel_active))
			break;
	return i;
}

static void collect_channels(struct firedtv *fdtv, int *pidc, u16 pid[])
{
	int i, n;

	for (i = 0, n = 0; i < 16; i++)
		if (test_bit(i, &fdtv->channel_active))
			pid[n++] = fdtv->channel_pid[i];
	*pidc = n;
}

static inline void dealloc_channel(struct firedtv *fdtv, int i)
{
	__clear_bit(i, &fdtv->channel_active);
}

int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct firedtv *fdtv = dvbdmxfeed->demux->priv;
	int pidc, c, ret;
	u16 pids[16];

	switch (dvbdmxfeed->type) {
	case DMX_TYPE_TS:
	case DMX_TYPE_SEC:
		break;
	default:
		dev_err(fdtv->device, "can't start dmx feed: invalid type %u\n",
			dvbdmxfeed->type);
		return -EINVAL;
	}

	if (mutex_lock_interruptible(&fdtv->demux_mutex))
		return -EINTR;

	if (dvbdmxfeed->type == DMX_TYPE_TS) {
		switch (dvbdmxfeed->pes_type) {
		case DMX_TS_PES_VIDEO:
		case DMX_TS_PES_AUDIO:
		case DMX_TS_PES_TELETEXT:
		case DMX_TS_PES_PCR:
		case DMX_TS_PES_OTHER:
			c = alloc_channel(fdtv);
			break;
		default:
			dev_err(fdtv->device,
				"can't start dmx feed: invalid pes type %u\n",
				dvbdmxfeed->pes_type);
			ret = -EINVAL;
			goto out;
		}
	} else {
		c = alloc_channel(fdtv);
	}

	if (c > 15) {
		dev_err(fdtv->device, "can't start dmx feed: busy\n");
		ret = -EBUSY;
		goto out;
	}

	dvbdmxfeed->priv = (typeof(dvbdmxfeed->priv))(unsigned long)c;
	fdtv->channel_pid[c] = dvbdmxfeed->pid;
	collect_channels(fdtv, &pidc, pids);

	if (dvbdmxfeed->pid == 8192) {
		ret = avc_tuner_get_ts(fdtv);
		if (ret) {
			dealloc_channel(fdtv, c);
			dev_err(fdtv->device, "can't get TS\n");
			goto out;
		}
	} else {
		ret = avc_tuner_set_pids(fdtv, pidc, pids);
		if (ret) {
			dealloc_channel(fdtv, c);
			dev_err(fdtv->device, "can't set PIDs\n");
			goto out;
		}
	}
out:
	mutex_unlock(&fdtv->demux_mutex);

	return ret;
}

int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
{
	struct dvb_demux *demux = dvbdmxfeed->demux;
	struct firedtv *fdtv = demux->priv;
	int pidc, c, ret;
	u16 pids[16];

	if (dvbdmxfeed->type == DMX_TYPE_TS &&
	    !((dvbdmxfeed->ts_type & TS_PACKET) &&
	      (demux->dmx.frontend->source != DMX_MEMORY_FE))) {

		if (dvbdmxfeed->ts_type & TS_DECODER) {
			if (dvbdmxfeed->pes_type >= DMX_TS_PES_OTHER ||
			    !demux->pesfilter[dvbdmxfeed->pes_type])
				return -EINVAL;

			demux->pids[dvbdmxfeed->pes_type] |= 0x8000;
			demux->pesfilter[dvbdmxfeed->pes_type] = NULL;
		}

		if (!(dvbdmxfeed->ts_type & TS_DECODER &&
		      dvbdmxfeed->pes_type < DMX_TS_PES_OTHER))
			return 0;
	}

	if (mutex_lock_interruptible(&fdtv->demux_mutex))
		return -EINTR;

	c = (unsigned long)dvbdmxfeed->priv;
	dealloc_channel(fdtv, c);
	collect_channels(fdtv, &pidc, pids);

	ret = avc_tuner_set_pids(fdtv, pidc, pids);

	mutex_unlock(&fdtv->demux_mutex);

	return ret;
}

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

int fdtv_dvb_register(struct firedtv *fdtv, const char *name)
{
	int err;

	err = dvb_register_adapter(&fdtv->adapter, name,
				   THIS_MODULE, fdtv->device, adapter_nr);
	if (err < 0)
		goto fail_log;

	/*DMX_TS_FILTERING | DMX_SECTION_FILTERING*/
	fdtv->demux.dmx.capabilities = 0;

	fdtv->demux.priv	= fdtv;
	fdtv->demux.filternum	= 16;
	fdtv->demux.feednum	= 16;
	fdtv->demux.start_feed	= fdtv_start_feed;
	fdtv->demux.stop_feed	= fdtv_stop_feed;
	fdtv->demux.write_to_decoder = NULL;

	err = dvb_dmx_init(&fdtv->demux);
	if (err)
		goto fail_unreg_adapter;

	fdtv->dmxdev.filternum    = 16;
	fdtv->dmxdev.demux        = &fdtv->demux.dmx;
	fdtv->dmxdev.capabilities = 0;

	err = dvb_dmxdev_init(&fdtv->dmxdev, &fdtv->adapter);
	if (err)
		goto fail_dmx_release;

	fdtv->frontend.source = DMX_FRONTEND_0;

	err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, &fdtv->frontend);
	if (err)
		goto fail_dmxdev_release;

	err = fdtv->demux.dmx.connect_frontend(&fdtv->demux.dmx,
					       &fdtv->frontend);
	if (err)
		goto fail_rem_frontend;

	err = dvb_net_init(&fdtv->adapter, &fdtv->dvbnet, &fdtv->demux.dmx);
	if (err)
		goto fail_disconnect_frontend;

	fdtv_frontend_init(fdtv, name);
	err = dvb_register_frontend(&fdtv->adapter, &fdtv->fe);
	if (err)
		goto fail_net_release;

	err = fdtv_ca_register(fdtv);
	if (err)
		dev_info(fdtv->device,
			 "Conditional Access Module not enabled\n");
	return 0;

fail_net_release:
	dvb_net_release(&fdtv->dvbnet);
fail_disconnect_frontend:
	fdtv->demux.dmx.close(&fdtv->demux.dmx);
fail_rem_frontend:
	fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
fail_dmxdev_release:
	dvb_dmxdev_release(&fdtv->dmxdev);
fail_dmx_release:
	dvb_dmx_release(&fdtv->demux);
fail_unreg_adapter:
	dvb_unregister_adapter(&fdtv->adapter);
fail_log:
	dev_err(fdtv->device, "DVB initialization failed\n");
	return err;
}

void fdtv_dvb_unregister(struct firedtv *fdtv)
{
	fdtv_ca_release(fdtv);
	dvb_unregister_frontend(&fdtv->fe);
	dvb_net_release(&fdtv->dvbnet);
	fdtv->demux.dmx.close(&fdtv->demux.dmx);
	fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
	dvb_dmxdev_release(&fdtv->dmxdev);
	dvb_dmx_release(&fdtv->demux);
	dvb_unregister_adapter(&fdtv->adapter);
}

Privacy Policy