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    cx2584x, in kernels 2.6.16 or newer.
12 
13 */
14 
15 #include "pvrusb2-cx2584x-v4l.h"
16 
17 
18 #include "pvrusb2-hdw-internal.h"
19 #include "pvrusb2-debug.h"
20 #include <media/drv-intf/cx25840.h>
21 #include <linux/videodev2.h>
22 #include <media/v4l2-common.h>
23 #include <linux/errno.h>
24 
25 
26 struct routing_scheme_item {
27 	int vid;
28 	int aud;
29 };
30 
31 struct routing_scheme {
32 	const struct routing_scheme_item *def;
33 	unsigned int cnt;
34 };
35 
36 static const struct routing_scheme_item routing_scheme0[] = {
37 	[PVR2_CVAL_INPUT_TV] = {
38 		.vid = CX25840_COMPOSITE7,
39 		.aud = CX25840_AUDIO8,
40 	},
41 	[PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
42 		.vid = CX25840_COMPOSITE3,
43 		.aud = CX25840_AUDIO_SERIAL,
44 	},
45 	[PVR2_CVAL_INPUT_COMPOSITE] = {
46 		.vid = CX25840_COMPOSITE3,
47 		.aud = CX25840_AUDIO_SERIAL,
48 	},
49 	[PVR2_CVAL_INPUT_SVIDEO] = {
50 		.vid = CX25840_SVIDEO1,
51 		.aud = CX25840_AUDIO_SERIAL,
52 	},
53 };
54 
55 static const struct routing_scheme routing_def0 = {
56 	.def = routing_scheme0,
57 	.cnt = ARRAY_SIZE(routing_scheme0),
58 };
59 
60 /* Specific to gotview device */
61 static const struct routing_scheme_item routing_schemegv[] = {
62 	[PVR2_CVAL_INPUT_TV] = {
63 		.vid = CX25840_COMPOSITE2,
64 		.aud = CX25840_AUDIO5,
65 	},
66 	[PVR2_CVAL_INPUT_RADIO] = {
67 		/* line-in is used for radio and composite.  A GPIO is
68 		   used to switch between the two choices. */
69 		.vid = CX25840_COMPOSITE1,
70 		.aud = CX25840_AUDIO_SERIAL,
71 	},
72 	[PVR2_CVAL_INPUT_COMPOSITE] = {
73 		.vid = CX25840_COMPOSITE1,
74 		.aud = CX25840_AUDIO_SERIAL,
75 	},
76 	[PVR2_CVAL_INPUT_SVIDEO] = {
77 		.vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
78 		.aud = CX25840_AUDIO_SERIAL,
79 	},
80 };
81 
82 static const struct routing_scheme routing_defgv = {
83 	.def = routing_schemegv,
84 	.cnt = ARRAY_SIZE(routing_schemegv),
85 };
86 
87 /* Specific to grabster av400 device */
88 static const struct routing_scheme_item routing_schemeav400[] = {
89 	[PVR2_CVAL_INPUT_COMPOSITE] = {
90 		.vid = CX25840_COMPOSITE1,
91 		.aud = CX25840_AUDIO_SERIAL,
92 	},
93 	[PVR2_CVAL_INPUT_SVIDEO] = {
94 		.vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
95 		.aud = CX25840_AUDIO_SERIAL,
96 	},
97 };
98 
99 static const struct routing_scheme routing_defav400 = {
100 	.def = routing_schemeav400,
101 	.cnt = ARRAY_SIZE(routing_schemeav400),
102 };
103 
104 static const struct routing_scheme *routing_schemes[] = {
105 	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
106 	[PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
107 	[PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
108 };
109 
110 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
111 {
112 	pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
113 	if (hdw->input_dirty || hdw->force_dirty) {
114 		enum cx25840_video_input vid_input;
115 		enum cx25840_audio_input aud_input;
116 		const struct routing_scheme *sp;
117 		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
118 
119 		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
120 			routing_schemes[sid] : NULL;
121 		if ((sp == NULL) ||
122 		    (hdw->input_val < 0) ||
123 		    (hdw->input_val >= sp->cnt)) {
124 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
125 				   "*** WARNING *** subdev cx2584x set_input: Invalid routing scheme (%u) and/or input (%d)",
126 				   sid, hdw->input_val);
127 			return;
128 		}
129 		vid_input = sp->def[hdw->input_val].vid;
130 		aud_input = sp->def[hdw->input_val].aud;
131 		pvr2_trace(PVR2_TRACE_CHIPS,
132 			   "subdev cx2584x set_input vid=0x%x aud=0x%x",
133 			   vid_input, aud_input);
134 		sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
135 		sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
136 	}
137 }
138