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    saa711x support that is available in the v4l available starting
26    with linux 2.6.15.
27 
28 */
29 
30 #include "pvrusb2-video-v4l.h"
31 
32 
33 
34 #include "pvrusb2-hdw-internal.h"
35 #include "pvrusb2-debug.h"
36 #include <linux/videodev2.h>
37 #include <media/v4l2-common.h>
38 #include <media/saa7115.h>
39 #include <linux/errno.h>
40 
41 struct routing_scheme {
42 	const int *def;
43 	unsigned int cnt;
44 };
45 
46 
47 static const int routing_scheme0[] = {
48 	[PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
49 	/* In radio mode, we mute the video, but point at one
50 	   spot just to stay consistent */
51 	[PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
52 	[PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE5,
53 	[PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2,
54 };
55 
56 static const struct routing_scheme routing_def0 = {
57 	.def = routing_scheme0,
58 	.cnt = ARRAY_SIZE(routing_scheme0),
59 };
60 
61 static const int routing_scheme1[] = {
62 	[PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
63 	[PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
64 	[PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE3,
65 	[PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2, /* or SVIDEO0, it seems */
66 };
67 
68 static const struct routing_scheme routing_def1 = {
69 	.def = routing_scheme1,
70 	.cnt = ARRAY_SIZE(routing_scheme1),
71 };
72 
73 static const struct routing_scheme *routing_schemes[] = {
74 	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
75 	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
76 };
77 
78 void pvr2_saa7115_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
79 {
80 	if (hdw->input_dirty || hdw->force_dirty) {
81 		const struct routing_scheme *sp;
82 		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
83 		u32 input;
84 
85 		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
86 			   hdw->input_val);
87 
88 		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
89 			routing_schemes[sid] : NULL;
90 		if ((sp == NULL) ||
91 		    (hdw->input_val < 0) ||
92 		    (hdw->input_val >= sp->cnt)) {
93 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
94 				   "*** WARNING *** subdev v4l2 set_input:"
95 				   " Invalid routing scheme (%u)"
96 				   " and/or input (%d)",
97 				   sid, hdw->input_val);
98 			return;
99 		}
100 		input = sp->def[hdw->input_val];
101 		sd->ops->video->s_routing(sd, input, 0, 0);
102 	}
103 }
104 
105 
106 /*
107   Stuff for Emacs to see, in order to encourage consistent editing style:
108   *** Local Variables: ***
109   *** mode: c ***
110   *** fill-column: 70 ***
111   *** tab-width: 8 ***
112   *** c-basic-offset: 8 ***
113   *** End: ***
114   */
115