V4L/DVB (11207): pvrusb2: Add composite and s-video input support for OnAir devices
[linux-2.6.git] / drivers / media / video / pvrusb2 / pvrusb2-cs53l32a.c
1 /*
2  *
3  *
4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
5  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License
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  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  *
20  */
21
22 /*
23
24    This source file is specifically designed to interface with the
25    v4l-dvb cs53l32a module.
26
27 */
28
29 #include "pvrusb2-cs53l32a.h"
30
31
32 #include "pvrusb2-hdw-internal.h"
33 #include "pvrusb2-debug.h"
34 #include <linux/videodev2.h>
35 #include <media/v4l2-common.h>
36 #include <linux/errno.h>
37 #include <linux/slab.h>
38
39 struct routing_scheme {
40         const int *def;
41         unsigned int cnt;
42 };
43
44
45 static const int routing_scheme1[] = {
46         [PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
47         [PVR2_CVAL_INPUT_RADIO] = 2,
48         [PVR2_CVAL_INPUT_COMPOSITE] = 0,
49         [PVR2_CVAL_INPUT_SVIDEO] =  0,
50 };
51
52 static const struct routing_scheme routing_schemes[] = {
53         [PVR2_ROUTING_SCHEME_ONAIR] = {
54                 .def = routing_scheme1,
55                 .cnt = ARRAY_SIZE(routing_scheme1),
56         },
57 };
58
59
60 void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
61 {
62         if (hdw->input_dirty || hdw->force_dirty) {
63                 struct v4l2_routing route;
64                 const struct routing_scheme *sp;
65                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
66                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
67                            hdw->input_val);
68                 if ((sid < ARRAY_SIZE(routing_schemes)) &&
69                     ((sp = routing_schemes + sid) != NULL) &&
70                     (hdw->input_val >= 0) &&
71                     (hdw->input_val < sp->cnt)) {
72                         route.input = sp->def[hdw->input_val];
73                 } else {
74                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
75                                    "*** WARNING *** subdev v4l2 set_input:"
76                                    " Invalid routing scheme (%u)"
77                                    " and/or input (%d)",
78                                    sid, hdw->input_val);
79                         return;
80                 }
81                 route.output = 0;
82                 sd->ops->audio->s_routing(sd, &route);
83         }
84 }
85
86
87 /*
88   Stuff for Emacs to see, in order to encourage consistent editing style:
89   *** Local Variables: ***
90   *** mode: c ***
91   *** fill-column: 70 ***
92   *** tab-width: 8 ***
93   *** c-basic-offset: 8 ***
94   *** End: ***
95   */