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
27 struct routing_scheme {
28 const int *def;
29 unsigned int cnt;
30 };
31
32
33 static 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
42 static const struct routing_scheme routing_def0 = {
43 .def = routing_scheme0,
44 .cnt = ARRAY_SIZE(routing_scheme0),
45 };
46
47 static 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
54 static const struct routing_scheme routing_def1 = {
55 .def = routing_scheme1,
56 .cnt = ARRAY_SIZE(routing_scheme1),
57 };
58
59 static const struct routing_scheme *routing_schemes[] = {
60 [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
61 [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
62 };
63
pvr2_saa7115_subdev_update(struct pvr2_hdw * hdw,struct v4l2_subdev * sd)64 void 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