Merge branch 'linus' into x86/xsave
[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-streams.h"
25 #include "cx18-cards.h"
26 #include "s5h1409.h"
27 #include "mxl5005s.h"
28
29 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
30
31 #define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
32
33 static struct mxl5005s_config hauppauge_hvr1600_tuner = {
34         .i2c_address     = 0xC6 >> 1,
35         .if_freq         = IF_FREQ_5380000HZ,
36         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
37         .agc_mode        = MXL_SINGLE_AGC,
38         .tracking_filter = MXL_TF_C_H,
39         .rssi_enable     = MXL_RSSI_ENABLE,
40         .cap_select      = MXL_CAP_SEL_ENABLE,
41         .div_out         = MXL_DIV_OUT_4,
42         .clock_out       = MXL_CLOCK_OUT_DISABLE,
43         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
44         .top             = MXL5005S_TOP_25P2,
45         .mod_mode        = MXL_DIGITAL_MODE,
46         .if_mode         = MXL_ZERO_IF,
47         .AgcMasterByte   = 0x00,
48 };
49
50 static struct s5h1409_config hauppauge_hvr1600_config = {
51         .demod_address = 0x32 >> 1,
52         .output_mode   = S5H1409_SERIAL_OUTPUT,
53         .gpio          = S5H1409_GPIO_ON,
54         .qam_if        = 44000,
55         .inversion     = S5H1409_INVERSION_OFF,
56         .status_mode   = S5H1409_DEMODLOCKING,
57         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
58
59 };
60
61 static int dvb_register(struct cx18_stream *stream);
62
63 /* Kernel DVB framework calls this when the feed needs to start.
64  * The CX18 framework should enable the transport DMA handling
65  * and queue processing.
66  */
67 static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
68 {
69         struct dvb_demux *demux = feed->demux;
70         struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
71         struct cx18 *cx = stream->cx;
72         int ret;
73         u32 v;
74
75         CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
76                         feed->pid, feed->index);
77
78         mutex_lock(&cx->serialize_lock);
79         ret = cx18_init_on_first_open(cx);
80         mutex_unlock(&cx->serialize_lock);
81         if (ret) {
82                 CX18_ERR("Failed to initialize firmware starting DVB feed\n");
83                 return ret;
84         }
85         ret = -EINVAL;
86
87         switch (cx->card->type) {
88         case CX18_CARD_HVR_1600_ESMT:
89         case CX18_CARD_HVR_1600_SAMSUNG:
90                 v = read_reg(CX18_REG_DMUX_NUM_PORT_0_CONTROL);
91                 v |= 0x00400000; /* Serial Mode */
92                 v |= 0x00002000; /* Data Length - Byte */
93                 v |= 0x00010000; /* Error - Polarity */
94                 v |= 0x00020000; /* Error - Passthru */
95                 v |= 0x000c0000; /* Error - Ignore */
96                 write_reg(v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
97                 break;
98
99         default:
100                 /* Assumption - Parallel transport - Signalling
101                  * undefined or default.
102                  */
103                 break;
104         }
105
106         if (!demux->dmx.frontend)
107                 return -EINVAL;
108
109         if (stream) {
110                 mutex_lock(&stream->dvb.feedlock);
111                 if (stream->dvb.feeding++ == 0) {
112                         CX18_DEBUG_INFO("Starting Transport DMA\n");
113                         ret = cx18_start_v4l2_encode_stream(stream);
114                         if (ret < 0) {
115                                 CX18_DEBUG_INFO(
116                                         "Failed to start Transport DMA\n");
117                                 stream->dvb.feeding--;
118                         }
119                 } else
120                         ret = 0;
121                 mutex_unlock(&stream->dvb.feedlock);
122         }
123
124         return ret;
125 }
126
127 /* Kernel DVB framework calls this when the feed needs to stop. */
128 static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
129 {
130         struct dvb_demux *demux = feed->demux;
131         struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
132         struct cx18 *cx = stream->cx;
133         int ret = -EINVAL;
134
135         CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
136                         feed->pid, feed->index);
137
138         if (stream) {
139                 mutex_lock(&stream->dvb.feedlock);
140                 if (--stream->dvb.feeding == 0) {
141                         CX18_DEBUG_INFO("Stopping Transport DMA\n");
142                         ret = cx18_stop_v4l2_encode_stream(stream, 0);
143                 } else
144                         ret = 0;
145                 mutex_unlock(&stream->dvb.feedlock);
146         }
147
148         return ret;
149 }
150
151 int cx18_dvb_register(struct cx18_stream *stream)
152 {
153         struct cx18 *cx = stream->cx;
154         struct cx18_dvb *dvb = &stream->dvb;
155         struct dvb_adapter *dvb_adapter;
156         struct dvb_demux *dvbdemux;
157         struct dmx_demux *dmx;
158         int ret;
159
160         if (!dvb)
161                 return -EINVAL;
162
163         ret = dvb_register_adapter(&dvb->dvb_adapter,
164                         CX18_DRIVER_NAME,
165                         THIS_MODULE, &cx->dev->dev, adapter_nr);
166         if (ret < 0)
167                 goto err_out;
168
169         dvb_adapter = &dvb->dvb_adapter;
170
171         dvbdemux = &dvb->demux;
172
173         dvbdemux->priv = (void *)stream;
174
175         dvbdemux->filternum = 256;
176         dvbdemux->feednum = 256;
177         dvbdemux->start_feed = cx18_dvb_start_feed;
178         dvbdemux->stop_feed = cx18_dvb_stop_feed;
179         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
180                 DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
181         ret = dvb_dmx_init(dvbdemux);
182         if (ret < 0)
183                 goto err_dvb_unregister_adapter;
184
185         dmx = &dvbdemux->dmx;
186
187         dvb->hw_frontend.source = DMX_FRONTEND_0;
188         dvb->mem_frontend.source = DMX_MEMORY_FE;
189         dvb->dmxdev.filternum = 256;
190         dvb->dmxdev.demux = dmx;
191
192         ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
193         if (ret < 0)
194                 goto err_dvb_dmx_release;
195
196         ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
197         if (ret < 0)
198                 goto err_dvb_dmxdev_release;
199
200         ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
201         if (ret < 0)
202                 goto err_remove_hw_frontend;
203
204         ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
205         if (ret < 0)
206                 goto err_remove_mem_frontend;
207
208         ret = dvb_register(stream);
209         if (ret < 0)
210                 goto err_disconnect_frontend;
211
212         dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
213
214         CX18_INFO("DVB Frontend registered\n");
215         mutex_init(&dvb->feedlock);
216         dvb->enabled = 1;
217         return ret;
218
219 err_disconnect_frontend:
220         dmx->disconnect_frontend(dmx);
221 err_remove_mem_frontend:
222         dmx->remove_frontend(dmx, &dvb->mem_frontend);
223 err_remove_hw_frontend:
224         dmx->remove_frontend(dmx, &dvb->hw_frontend);
225 err_dvb_dmxdev_release:
226         dvb_dmxdev_release(&dvb->dmxdev);
227 err_dvb_dmx_release:
228         dvb_dmx_release(dvbdemux);
229 err_dvb_unregister_adapter:
230         dvb_unregister_adapter(dvb_adapter);
231 err_out:
232         return ret;
233 }
234
235 void cx18_dvb_unregister(struct cx18_stream *stream)
236 {
237         struct cx18 *cx = stream->cx;
238         struct cx18_dvb *dvb = &stream->dvb;
239         struct dvb_adapter *dvb_adapter;
240         struct dvb_demux *dvbdemux;
241         struct dmx_demux *dmx;
242
243         CX18_INFO("unregister DVB\n");
244
245         dvb_adapter = &dvb->dvb_adapter;
246         dvbdemux = &dvb->demux;
247         dmx = &dvbdemux->dmx;
248
249         dmx->close(dmx);
250         dvb_net_release(&dvb->dvbnet);
251         dmx->remove_frontend(dmx, &dvb->mem_frontend);
252         dmx->remove_frontend(dmx, &dvb->hw_frontend);
253         dvb_dmxdev_release(&dvb->dmxdev);
254         dvb_dmx_release(dvbdemux);
255         dvb_unregister_frontend(dvb->fe);
256         dvb_frontend_detach(dvb->fe);
257         dvb_unregister_adapter(dvb_adapter);
258 }
259
260 /* All the DVB attach calls go here, this function get's modified
261  * for each new card. No other function in this file needs
262  * to change.
263  */
264 static int dvb_register(struct cx18_stream *stream)
265 {
266         struct cx18_dvb *dvb = &stream->dvb;
267         struct cx18 *cx = stream->cx;
268         int ret = 0;
269
270         switch (cx->card->type) {
271         case CX18_CARD_HVR_1600_ESMT:
272         case CX18_CARD_HVR_1600_SAMSUNG:
273                 dvb->fe = dvb_attach(s5h1409_attach,
274                         &hauppauge_hvr1600_config,
275                         &cx->i2c_adap[0]);
276                 if (dvb->fe != NULL) {
277                         dvb_attach(mxl5005s_attach, dvb->fe,
278                                 &cx->i2c_adap[0],
279                                 &hauppauge_hvr1600_tuner);
280                         ret = 0;
281                 }
282                 break;
283         default:
284                 /* No Digital Tv Support */
285                 break;
286         }
287
288         if (dvb->fe == NULL) {
289                 CX18_ERR("frontend initialization failed\n");
290                 return -1;
291         }
292
293         ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
294         if (ret < 0) {
295                 if (dvb->fe->ops.release)
296                         dvb->fe->ops.release(dvb->fe);
297                 return ret;
298         }
299
300         return ret;
301 }