BKL: remove extraneous #include <smp_lock.h>
[linux-3.10.git] / drivers / media / dvb / ngene / ngene-dvb.c
1 /*
2  * ngene-dvb.c: nGene PCIe bridge driver - DVB functions
3  *
4  * Copyright (C) 2005-2007 Micronas
5  *
6  * Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de>
7  *                         Modifications for new nGene firmware,
8  *                         support for EEPROM-copying,
9  *                         support for new dual DVB-S2 card prototype
10  *
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License
14  * version 2 only, as published by the Free Software Foundation.
15  *
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software
25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26  * 02110-1301, USA
27  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
28  */
29
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/delay.h>
33 #include <linux/slab.h>
34 #include <linux/poll.h>
35 #include <linux/io.h>
36 #include <asm/div64.h>
37 #include <linux/pci.h>
38 #include <linux/timer.h>
39 #include <linux/byteorder/generic.h>
40 #include <linux/firmware.h>
41 #include <linux/vmalloc.h>
42
43 #include "ngene.h"
44
45
46 /****************************************************************************/
47 /* COMMAND API interface ****************************************************/
48 /****************************************************************************/
49
50 /****************************************************************************/
51 /* DVB functions and API interface ******************************************/
52 /****************************************************************************/
53
54 static void swap_buffer(u32 *p, u32 len)
55 {
56         while (len) {
57                 *p = swab32(*p);
58                 p++;
59                 len -= 4;
60         }
61 }
62
63 void *tsin_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
64 {
65         struct ngene_channel *chan = priv;
66
67
68         if (chan->users > 0)
69                 dvb_dmx_swfilter(&chan->demux, buf, len);
70         return NULL;
71 }
72
73 u8 fill_ts[188] = { 0x47, 0x1f, 0xff, 0x10 };
74
75 void *tsout_exchange(void *priv, void *buf, u32 len, u32 clock, u32 flags)
76 {
77         struct ngene_channel *chan = priv;
78         struct ngene *dev = chan->dev;
79         u32 alen;
80
81         alen = dvb_ringbuffer_avail(&dev->tsout_rbuf);
82         alen -= alen % 188;
83
84         if (alen < len)
85                 FillTSBuffer(buf + alen, len - alen, flags);
86         else
87                 alen = len;
88         dvb_ringbuffer_read(&dev->tsout_rbuf, buf, alen);
89         if (flags & DF_SWAP32)
90                 swap_buffer((u32 *)buf, alen);
91         wake_up_interruptible(&dev->tsout_rbuf.queue);
92         return buf;
93 }
94
95
96
97 int ngene_start_feed(struct dvb_demux_feed *dvbdmxfeed)
98 {
99         struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
100         struct ngene_channel *chan = dvbdmx->priv;
101
102         if (chan->users == 0) {
103                 if (!chan->dev->cmd_timeout_workaround || !chan->running)
104                         set_transfer(chan, 1);
105         }
106
107         return ++chan->users;
108 }
109
110 int ngene_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
111 {
112         struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
113         struct ngene_channel *chan = dvbdmx->priv;
114
115         if (--chan->users)
116                 return chan->users;
117
118         if (!chan->dev->cmd_timeout_workaround)
119                 set_transfer(chan, 0);
120
121         return 0;
122 }
123
124 int my_dvb_dmx_ts_card_init(struct dvb_demux *dvbdemux, char *id,
125                             int (*start_feed)(struct dvb_demux_feed *),
126                             int (*stop_feed)(struct dvb_demux_feed *),
127                             void *priv)
128 {
129         dvbdemux->priv = priv;
130
131         dvbdemux->filternum = 256;
132         dvbdemux->feednum = 256;
133         dvbdemux->start_feed = start_feed;
134         dvbdemux->stop_feed = stop_feed;
135         dvbdemux->write_to_decoder = NULL;
136         dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
137                                       DMX_SECTION_FILTERING |
138                                       DMX_MEMORY_BASED_FILTERING);
139         return dvb_dmx_init(dvbdemux);
140 }
141
142 int my_dvb_dmxdev_ts_card_init(struct dmxdev *dmxdev,
143                                struct dvb_demux *dvbdemux,
144                                struct dmx_frontend *hw_frontend,
145                                struct dmx_frontend *mem_frontend,
146                                struct dvb_adapter *dvb_adapter)
147 {
148         int ret;
149
150         dmxdev->filternum = 256;
151         dmxdev->demux = &dvbdemux->dmx;
152         dmxdev->capabilities = 0;
153         ret = dvb_dmxdev_init(dmxdev, dvb_adapter);
154         if (ret < 0)
155                 return ret;
156
157         hw_frontend->source = DMX_FRONTEND_0;
158         dvbdemux->dmx.add_frontend(&dvbdemux->dmx, hw_frontend);
159         mem_frontend->source = DMX_MEMORY_FE;
160         dvbdemux->dmx.add_frontend(&dvbdemux->dmx, mem_frontend);
161         return dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, hw_frontend);
162 }