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
41struct routing_scheme {
42	const int *def;
43	unsigned int cnt;
44};
45
46
47static 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
56static const struct routing_scheme routing_def0 = {
57	.def = routing_scheme0,
58	.cnt = ARRAY_SIZE(routing_scheme0),
59};
60
61static 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
68static const struct routing_scheme routing_def1 = {
69	.def = routing_scheme1,
70	.cnt = ARRAY_SIZE(routing_scheme1),
71};
72
73static const struct routing_scheme *routing_schemes[] = {
74	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
75	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
76};
77
78void 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