Merge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and 'tracing/ring-buffer...
[linux-2.6] / drivers / media / video / cx18 / cx18-dvb.c
1 /*
2  *  cx18 functions for DVB support
3  *
4  *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 2 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, write to the Free Software
19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  */
21
22 #include "cx18-version.h"
23 #include "cx18-dvb.h"
24 #include "cx18-io.h"
25 #include "cx18-streams.h"
26 #include "cx18-queue.h"
27 #include "cx18-scb.h"
28 #include "cx18-cards.h"
29 #include "s5h1409.h"
30 #include "mxl5005s.h"
31
32 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
33
34 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
35
36 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
37         .i2c_address     = 0xC6 >> 1,
38         .if_freq         = IF_FREQ_5380000HZ,
39         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
40         .agc_mode        = MXL_SINGLE_AGC,
41         .tracking_filter = MXL_TF_C_H,
42         .rssi_enable     = MXL_RSSI_ENABLE,
43         .cap_select      = MXL_CAP_SEL_ENABLE,
44         .div_out         = MXL_DIV_OUT_4,
45         .clock_out       = MXL_CLOCK_OUT_DISABLE,
46         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
47         .top             = MXL5005S_TOP_25P2,
48         .mod_mode        = MXL_DIGITAL_MODE,
49         .if_mode         = MXL_ZERO_IF,
50         .AgcMasterByte   = 0x00,
51 };
52
53 static struct s5h1409_config hauppauge_hvr1600_config = {
54         .demod_address = 0x32 >> 1,
55         .output_mode   = S5H1409_SERIAL_OUTPUT,
56         .gpio          = S5H1409_GPIO_ON,
57         .qam_if        = 44000,
58         .inversion     = S5H1409_INVERSION_OFF,
59         .status_mode   = S5H1409_DEMODLOCKING,
60         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
61
62 };
63
64 static int dvb_register(struct cx18_stream *stream);
65
66 /* Kernel DVB framework calls this when the feed needs to start.
67  * The CX18 framework should enable the transport DMA handling
68  * and queue processing.
69  */
70 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
71 {
72         struct dvb_demux *demux = feed->demux;
73         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
74         struct cx18 *cx = stream->cx;
75         int ret;
76         u32 v;
77
78         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
79                         feed->pid, feed->index);
80
81         mutex_lock(&cx->serialize_lock);
82         ret = cx18_init_on_first_open(cx);
83         mutex_unlock(&cx->serialize_lock);
84         if (ret) {
85                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
86                 return ret;
87         }
88         ret = -EINVAL;
89
90         switch (cx->card->type) {
91         case CX18_CARD_HVR_1600_ESMT:
92         case CX18_CARD_HVR_1600_SAMSUNG:
93                 v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
94                 v |= 0x00400000; /* Serial Mode */
95                 v |= 0x00002000; /* Data Length - Byte */
96                 v |= 0x00010000; /* Error - Polarity */
97                 v |= 0x00020000; /* Error - Passthru */
98                 v |= 0x000c0000; /* Error - Ignore */
99                 cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
100                 break;
101
102         default:
103                 /* Assumption - Parallel transport - Signalling
104                  * undefined or default.
105                  */
106                 break;
107         }
108
109         if (!demux->dmx.frontend)
110                 return -EINVAL;
111
112         if (stream) {
113                 mutex_lock(&stream->dvb.feedlock);
114                 if (stream->dvb.feeding++ == 0) {
115                         CX18_DEBUG_INFO("Starting Transport DMA\n");
116                         ret = cx18_start_v4l2_encode_stream(stream);
117                         if (ret < 0) {
118                                 CX18_DEBUG_INFO(
119                                         "Failed to start Transport DMA\n");
120                                 stream->dvb.feeding--;
121                         }
122                 } else
123                         ret = 0;
124                 mutex_unlock(&stream->dvb.feedlock);
125         }
126
127         return ret;
128 }
129
130 /* Kernel DVB framework calls this when the feed needs to stop. */
131 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
132 {
133         struct dvb_demux *demux = feed->demux;
134         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
135         struct cx18 *cx = stream->cx;
136         int ret = -EINVAL;
137
138         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
139                         feed->pid, feed->index);
140
141         if (stream) {
142                 mutex_lock(&stream->dvb.feedlock);
143                 if (--stream->dvb.feeding == 0) {
144                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
145                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
146                 } else
147                         ret = 0;
148                 mutex_unlock(&stream->dvb.feedlock);
149         }
150
151         return ret;
152 }
153
154 int cx18_dvb_register(struct cx18_stream *stream)
155 {
156         struct cx18 *cx = stream->cx;
157         struct cx18_dvb *dvb = &stream->dvb;
158         struct dvb_adapter *dvb_adapter;
159         struct dvb_demux *dvbdemux;
160         struct dmx_demux *dmx;
161         int ret;
162
163         if (!dvb)
164                 return -EINVAL;
165
166         ret = dvb_register_adapter(&dvb->dvb_adapter,
167                         CX18_DRIVER_NAME,
168                         THIS_MODULE, &cx->dev->dev, adapter_nr);
169         if (ret < 0)
170                 goto err_out;
171
172         dvb_adapter = &dvb->dvb_adapter;
173
174         dvbdemux = &dvb->demux;
175
176         dvbdemux->priv = (void *)stream;
177
178         dvbdemux->filternum = 256;
179         dvbdemux->feednum = 256;
180         dvbdemux->start_feed = cx18_dvb_start_feed;
181         dvbdemux->stop_feed = cx18_dvb_stop_feed;
182         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
183                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
184         ret = dvb_dmx_init(dvbdemux);
185         if (ret < 0)
186                 goto err_dvb_unregister_adapter;
187
188         dmx = &dvbdemux->dmx;
189
190         dvb->hw_frontend.source = DMX_FRONTEND_0;
191         dvb->mem_frontend.source = DMX_MEMORY_FE;
192         dvb->dmxdev.filternum = 256;
193         dvb->dmxdev.demux = dmx;
194
195         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
196         if (ret < 0)
197                 goto err_dvb_dmx_release;
198
199         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
200         if (ret < 0)
201                 goto err_dvb_dmxdev_release;
202
203         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
204         if (ret < 0)
205                 goto err_remove_hw_frontend;
206
207         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
208         if (ret < 0)
209                 goto err_remove_mem_frontend;
210
211         ret = dvb_register(stream);
212         if (ret < 0)
213                 goto err_disconnect_frontend;
214
215         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
216
217         CX18_INFO("DVB Frontend registered\n");
218         mutex_init(&dvb->feedlock);
219         dvb->enabled = 1;
220         return ret;
221
222 err_disconnect_frontend:
223         dmx->disconnect_frontend(dmx);
224 err_remove_mem_frontend:
225         dmx->remove_frontend(dmx, &dvb->mem_frontend);
226 err_remove_hw_frontend:
227         dmx->remove_frontend(dmx, &dvb->hw_frontend);
228 err_dvb_dmxdev_release:
229         dvb_dmxdev_release(&dvb->dmxdev);
230 err_dvb_dmx_release:
231         dvb_dmx_release(dvbdemux);
232 err_dvb_unregister_adapter:
233         dvb_unregister_adapter(dvb_adapter);
234 err_out:
235         return ret;
236 }
237
238 void cx18_dvb_unregister(struct cx18_stream *stream)
239 {
240         struct cx18 *cx = stream->cx;
241         struct cx18_dvb *dvb = &stream->dvb;
242         struct dvb_adapter *dvb_adapter;
243         struct dvb_demux *dvbdemux;
244         struct dmx_demux *dmx;
245
246         CX18_INFO("unregister DVB\n");
247
248         dvb_adapter = &dvb->dvb_adapter;
249         dvbdemux = &dvb->demux;
250         dmx = &dvbdemux->dmx;
251
252         dmx->close(dmx);
253         dvb_net_release(&dvb->dvbnet);
254         dmx->remove_frontend(dmx, &dvb->mem_frontend);
255         dmx->remove_frontend(dmx, &dvb->hw_frontend);
256         dvb_dmxdev_release(&dvb->dmxdev);
257         dvb_dmx_release(dvbdemux);
258         dvb_unregister_frontend(dvb->fe);
259         dvb_frontend_detach(dvb->fe);
260         dvb_unregister_adapter(dvb_adapter);
261 }
262
263 /* All the DVB attach calls go here, this function get's modified
264  * for each new card. No other function in this file needs
265  * to change.
266  */
267 static int dvb_register(struct cx18_stream *stream)
268 {
269         struct cx18_dvb *dvb = &stream->dvb;
270         struct cx18 *cx = stream->cx;
271         int ret = 0;
272
273         switch (cx->card->type) {
274         case CX18_CARD_HVR_1600_ESMT:
275         case CX18_CARD_HVR_1600_SAMSUNG:
276                 dvb->fe = dvb_attach(s5h1409_attach,
277                         &hauppauge_hvr1600_config,
278                         &cx->i2c_adap[0]);
279                 if (dvb->fe != NULL) {
280                         dvb_attach(mxl5005s_attach, dvb->fe,
281                                 &cx->i2c_adap[0],
282                                 &hauppauge_hvr1600_tuner);
283                         ret = 0;
284                 }
285                 break;
286         default:
287                 /* No Digital Tv Support */
288                 break;
289         }
290
291         if (dvb->fe == NULL) {
292                 CX18_ERR("frontend initialization failed\n");
293                 return -1;
294         }
295
296         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
297         if (ret < 0) {
298                 if (dvb->fe->ops.release)
299                         dvb->fe->ops.release(dvb->fe);
300                 return ret;
301         }
302
303         return ret;
304 }
305
306 void cx18_dvb_work_handler(struct cx18 *cx)
307 {
308         struct cx18_buffer *buf;
309         struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_TS];
310
311         while ((buf = cx18_dequeue(s, &s->q_full)) != NULL) {
312                 if (s->dvb.enabled)
313                         dvb_dmx_swfilter(&s->dvb.demux, buf->buf,
314                                          buf->bytesused);
315
316                 cx18_enqueue(s, buf, &s->q_free);
317                 cx18_buf_sync_for_device(s, buf);
318                 if (s->handle == CX18_INVALID_TASK_HANDLE) /* FIXME: improve */
319                         continue;
320
321                 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle,
322                        (void __iomem *)&cx->scb->cpu_mdl[buf->id] - cx->enc_mem,
323                        1, buf->id, s->buf_size);
324         }
325 }