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13#include <linux/bitops.h>
14#include <linux/device.h>
15#include <linux/errno.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/mutex.h>
19#include <linux/types.h>
20
21#include <media/dmxdev.h>
22#include <media/dvb_demux.h>
23#include <media/dvbdev.h>
24#include <media/dvb_frontend.h>
25
26#include "firedtv.h"
27
28static int alloc_channel(struct firedtv *fdtv)
29{
30 int i;
31
32 for (i = 0; i < 16; i++)
33 if (!__test_and_set_bit(i, &fdtv->channel_active))
34 break;
35 return i;
36}
37
38static void collect_channels(struct firedtv *fdtv, int *pidc, u16 pid[])
39{
40 int i, n;
41
42 for (i = 0, n = 0; i < 16; i++)
43 if (test_bit(i, &fdtv->channel_active))
44 pid[n++] = fdtv->channel_pid[i];
45 *pidc = n;
46}
47
48static inline void dealloc_channel(struct firedtv *fdtv, int i)
49{
50 __clear_bit(i, &fdtv->channel_active);
51}
52
53int fdtv_start_feed(struct dvb_demux_feed *dvbdmxfeed)
54{
55 struct firedtv *fdtv = dvbdmxfeed->demux->priv;
56 int pidc, c, ret;
57 u16 pids[16];
58
59 switch (dvbdmxfeed->type) {
60 case DMX_TYPE_TS:
61 case DMX_TYPE_SEC:
62 break;
63 default:
64 dev_err(fdtv->device, "can't start dmx feed: invalid type %u\n",
65 dvbdmxfeed->type);
66 return -EINVAL;
67 }
68
69 if (mutex_lock_interruptible(&fdtv->demux_mutex))
70 return -EINTR;
71
72 if (dvbdmxfeed->type == DMX_TYPE_TS) {
73 switch (dvbdmxfeed->pes_type) {
74 case DMX_PES_VIDEO:
75 case DMX_PES_AUDIO:
76 case DMX_PES_TELETEXT:
77 case DMX_PES_PCR:
78 case DMX_PES_OTHER:
79 c = alloc_channel(fdtv);
80 break;
81 default:
82 dev_err(fdtv->device,
83 "can't start dmx feed: invalid pes type %u\n",
84 dvbdmxfeed->pes_type);
85 ret = -EINVAL;
86 goto out;
87 }
88 } else {
89 c = alloc_channel(fdtv);
90 }
91
92 if (c > 15) {
93 dev_err(fdtv->device, "can't start dmx feed: busy\n");
94 ret = -EBUSY;
95 goto out;
96 }
97
98 dvbdmxfeed->priv = (typeof(dvbdmxfeed->priv))(unsigned long)c;
99 fdtv->channel_pid[c] = dvbdmxfeed->pid;
100 collect_channels(fdtv, &pidc, pids);
101
102 if (dvbdmxfeed->pid == 8192) {
103 ret = avc_tuner_get_ts(fdtv);
104 if (ret) {
105 dealloc_channel(fdtv, c);
106 dev_err(fdtv->device, "can't get TS\n");
107 goto out;
108 }
109 } else {
110 ret = avc_tuner_set_pids(fdtv, pidc, pids);
111 if (ret) {
112 dealloc_channel(fdtv, c);
113 dev_err(fdtv->device, "can't set PIDs\n");
114 goto out;
115 }
116 }
117out:
118 mutex_unlock(&fdtv->demux_mutex);
119
120 return ret;
121}
122
123int fdtv_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
124{
125 struct dvb_demux *demux = dvbdmxfeed->demux;
126 struct firedtv *fdtv = demux->priv;
127 int pidc, c, ret;
128 u16 pids[16];
129
130 if (dvbdmxfeed->type == DMX_TYPE_TS &&
131 !((dvbdmxfeed->ts_type & TS_PACKET) &&
132 (demux->dmx.frontend->source != DMX_MEMORY_FE))) {
133
134 if (dvbdmxfeed->ts_type & TS_DECODER) {
135 if (dvbdmxfeed->pes_type >= DMX_PES_OTHER ||
136 !demux->pesfilter[dvbdmxfeed->pes_type])
137 return -EINVAL;
138
139 demux->pids[dvbdmxfeed->pes_type] |= 0x8000;
140 demux->pesfilter[dvbdmxfeed->pes_type] = NULL;
141 }
142
143 if (!(dvbdmxfeed->ts_type & TS_DECODER &&
144 dvbdmxfeed->pes_type < DMX_PES_OTHER))
145 return 0;
146 }
147
148 if (mutex_lock_interruptible(&fdtv->demux_mutex))
149 return -EINTR;
150
151 c = (unsigned long)dvbdmxfeed->priv;
152 dealloc_channel(fdtv, c);
153 collect_channels(fdtv, &pidc, pids);
154
155 ret = avc_tuner_set_pids(fdtv, pidc, pids);
156
157 mutex_unlock(&fdtv->demux_mutex);
158
159 return ret;
160}
161
162DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
163
164int fdtv_dvb_register(struct firedtv *fdtv, const char *name)
165{
166 int err;
167
168 err = dvb_register_adapter(&fdtv->adapter, name,
169 THIS_MODULE, fdtv->device, adapter_nr);
170 if (err < 0)
171 goto fail_log;
172
173
174 fdtv->demux.dmx.capabilities = 0;
175
176 fdtv->demux.priv = fdtv;
177 fdtv->demux.filternum = 16;
178 fdtv->demux.feednum = 16;
179 fdtv->demux.start_feed = fdtv_start_feed;
180 fdtv->demux.stop_feed = fdtv_stop_feed;
181 fdtv->demux.write_to_decoder = NULL;
182
183 err = dvb_dmx_init(&fdtv->demux);
184 if (err)
185 goto fail_unreg_adapter;
186
187 fdtv->dmxdev.filternum = 16;
188 fdtv->dmxdev.demux = &fdtv->demux.dmx;
189 fdtv->dmxdev.capabilities = 0;
190
191 err = dvb_dmxdev_init(&fdtv->dmxdev, &fdtv->adapter);
192 if (err)
193 goto fail_dmx_release;
194
195 fdtv->frontend.source = DMX_FRONTEND_0;
196
197 err = fdtv->demux.dmx.add_frontend(&fdtv->demux.dmx, &fdtv->frontend);
198 if (err)
199 goto fail_dmxdev_release;
200
201 err = fdtv->demux.dmx.connect_frontend(&fdtv->demux.dmx,
202 &fdtv->frontend);
203 if (err)
204 goto fail_rem_frontend;
205
206 err = dvb_net_init(&fdtv->adapter, &fdtv->dvbnet, &fdtv->demux.dmx);
207 if (err)
208 goto fail_disconnect_frontend;
209
210 fdtv_frontend_init(fdtv, name);
211 err = dvb_register_frontend(&fdtv->adapter, &fdtv->fe);
212 if (err)
213 goto fail_net_release;
214
215 err = fdtv_ca_register(fdtv);
216 if (err)
217 dev_info(fdtv->device,
218 "Conditional Access Module not enabled\n");
219 return 0;
220
221fail_net_release:
222 dvb_net_release(&fdtv->dvbnet);
223fail_disconnect_frontend:
224 fdtv->demux.dmx.close(&fdtv->demux.dmx);
225fail_rem_frontend:
226 fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
227fail_dmxdev_release:
228 dvb_dmxdev_release(&fdtv->dmxdev);
229fail_dmx_release:
230 dvb_dmx_release(&fdtv->demux);
231fail_unreg_adapter:
232 dvb_unregister_adapter(&fdtv->adapter);
233fail_log:
234 dev_err(fdtv->device, "DVB initialization failed\n");
235 return err;
236}
237
238void fdtv_dvb_unregister(struct firedtv *fdtv)
239{
240 fdtv_ca_release(fdtv);
241 dvb_unregister_frontend(&fdtv->fe);
242 dvb_net_release(&fdtv->dvbnet);
243 fdtv->demux.dmx.close(&fdtv->demux.dmx);
244 fdtv->demux.dmx.remove_frontend(&fdtv->demux.dmx, &fdtv->frontend);
245 dvb_dmxdev_release(&fdtv->dmxdev);
246 dvb_dmx_release(&fdtv->demux);
247 dvb_unregister_adapter(&fdtv->adapter);
248}
249
