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  */
17 
18 /*
19 
20    This source file is specifically designed to interface with the
21    v4l-dvb cs53l32a module.
22 
23 */
24 
25 #include "pvrusb2-cs53l32a.h"
26 
27 
28 #include "pvrusb2-hdw-internal.h"
29 #include "pvrusb2-debug.h"
30 #include <linux/videodev2.h>
31 #include <media/v4l2-common.h>
32 #include <linux/errno.h>
33 
34 struct routing_scheme {
35 	const int *def;
36 	unsigned int cnt;
37 };
38 
39 
40 static const int routing_scheme1[] = {
41 	[PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
42 	[PVR2_CVAL_INPUT_RADIO] = 2,
43 	[PVR2_CVAL_INPUT_COMPOSITE] = 0,
44 	[PVR2_CVAL_INPUT_SVIDEO] =  0,
45 };
46 
47 static const struct routing_scheme routing_def1 = {
48 	.def = routing_scheme1,
49 	.cnt = ARRAY_SIZE(routing_scheme1),
50 };
51 
52 static const struct routing_scheme *routing_schemes[] = {
53 	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
54 };
55 
56 
57 void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
58 {
59 	if (hdw->input_dirty || hdw->force_dirty) {
60 		const struct routing_scheme *sp;
61 		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
62 		u32 input;
63 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
64 			   hdw->input_val);
65 		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
66 			routing_schemes[sid] : NULL;
67 		if ((sp == NULL) ||
68 		    (hdw->input_val < 0) ||
69 		    (hdw->input_val >= sp->cnt)) {
70 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
71 				   "*** WARNING *** subdev v4l2 set_input: Invalid routing scheme (%u) and/or input (%d)",
72 				   sid, hdw->input_val);
73 			return;
74 		}
75 		input = sp->def[hdw->input_val];
76 		sd->ops->audio->s_routing(sd, input, 0, 0);
77 	}
78 }
79