1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *
4 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
5 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
6 */
7
8/*
9
10   This source file is specifically designed to interface with the
11   saa711x support that is available in the v4l available starting
12   with linux 2.6.15.
13
14*/
15
16#include "pvrusb2-video-v4l.h"
17
18
19
20#include "pvrusb2-hdw-internal.h"
21#include "pvrusb2-debug.h"
22#include <linux/videodev2.h>
23#include <media/v4l2-common.h>
24#include <media/i2c/saa7115.h>
25#include <linux/errno.h>
26
27struct routing_scheme {
28	const int *def;
29	unsigned int cnt;
30};
31
32
33static const int routing_scheme0[] = {
34	[PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
35	/* In radio mode, we mute the video, but point at one
36	   spot just to stay consistent */
37	[PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
38	[PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE5,
39	[PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2,
40};
41
42static const struct routing_scheme routing_def0 = {
43	.def = routing_scheme0,
44	.cnt = ARRAY_SIZE(routing_scheme0),
45};
46
47static const int routing_scheme1[] = {
48	[PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
49	[PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
50	[PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE3,
51	[PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2, /* or SVIDEO0, it seems */
52};
53
54static const struct routing_scheme routing_def1 = {
55	.def = routing_scheme1,
56	.cnt = ARRAY_SIZE(routing_scheme1),
57};
58
59static const struct routing_scheme *routing_schemes[] = {
60	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
61	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
62};
63
64void pvr2_saa7115_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
65{
66	if (hdw->input_dirty || hdw->force_dirty) {
67		const struct routing_scheme *sp;
68		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
69		u32 input;
70
71		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
72			   hdw->input_val);
73
74		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
75			routing_schemes[sid] : NULL;
76		if ((sp == NULL) ||
77		    (hdw->input_val < 0) ||
78		    (hdw->input_val >= sp->cnt)) {
79			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
80				   "*** WARNING *** subdev v4l2 set_input: Invalid routing scheme (%u) and/or input (%d)",
81				   sid, hdw->input_val);
82			return;
83		}
84		input = sp->def[hdw->input_val];
85		sd->ops->video->s_routing(sd, input, 0, 0);
86	}
87}
88