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  */
17 
18 /*
19 
20    This source file is specifically designed to interface with the
21    cx2584x, in kernels 2.6.16 or newer.
22 
23 */
24 
25 #include "pvrusb2-cx2584x-v4l.h"
26 #include "pvrusb2-video-v4l.h"
27 
28 
29 #include "pvrusb2-hdw-internal.h"
30 #include "pvrusb2-debug.h"
31 #include <media/drv-intf/cx25840.h>
32 #include <linux/videodev2.h>
33 #include <media/v4l2-common.h>
34 #include <linux/errno.h>
35 
36 
37 struct routing_scheme_item {
38 	int vid;
39 	int aud;
40 };
41 
42 struct routing_scheme {
43 	const struct routing_scheme_item *def;
44 	unsigned int cnt;
45 };
46 
47 static const struct routing_scheme_item routing_scheme0[] = {
48 	[PVR2_CVAL_INPUT_TV] = {
49 		.vid = CX25840_COMPOSITE7,
50 		.aud = CX25840_AUDIO8,
51 	},
52 	[PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
53 		.vid = CX25840_COMPOSITE3,
54 		.aud = CX25840_AUDIO_SERIAL,
55 	},
56 	[PVR2_CVAL_INPUT_COMPOSITE] = {
57 		.vid = CX25840_COMPOSITE3,
58 		.aud = CX25840_AUDIO_SERIAL,
59 	},
60 	[PVR2_CVAL_INPUT_SVIDEO] = {
61 		.vid = CX25840_SVIDEO1,
62 		.aud = CX25840_AUDIO_SERIAL,
63 	},
64 };
65 
66 static const struct routing_scheme routing_def0 = {
67 	.def = routing_scheme0,
68 	.cnt = ARRAY_SIZE(routing_scheme0),
69 };
70 
71 /* Specific to gotview device */
72 static const struct routing_scheme_item routing_schemegv[] = {
73 	[PVR2_CVAL_INPUT_TV] = {
74 		.vid = CX25840_COMPOSITE2,
75 		.aud = CX25840_AUDIO5,
76 	},
77 	[PVR2_CVAL_INPUT_RADIO] = {
78 		/* line-in is used for radio and composite.  A GPIO is
79 		   used to switch between the two choices. */
80 		.vid = CX25840_COMPOSITE1,
81 		.aud = CX25840_AUDIO_SERIAL,
82 	},
83 	[PVR2_CVAL_INPUT_COMPOSITE] = {
84 		.vid = CX25840_COMPOSITE1,
85 		.aud = CX25840_AUDIO_SERIAL,
86 	},
87 	[PVR2_CVAL_INPUT_SVIDEO] = {
88 		.vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
89 		.aud = CX25840_AUDIO_SERIAL,
90 	},
91 };
92 
93 static const struct routing_scheme routing_defgv = {
94 	.def = routing_schemegv,
95 	.cnt = ARRAY_SIZE(routing_schemegv),
96 };
97 
98 /* Specific to grabster av400 device */
99 static const struct routing_scheme_item routing_schemeav400[] = {
100 	[PVR2_CVAL_INPUT_COMPOSITE] = {
101 		.vid = CX25840_COMPOSITE1,
102 		.aud = CX25840_AUDIO_SERIAL,
103 	},
104 	[PVR2_CVAL_INPUT_SVIDEO] = {
105 		.vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
106 		.aud = CX25840_AUDIO_SERIAL,
107 	},
108 };
109 
110 static const struct routing_scheme routing_defav400 = {
111 	.def = routing_schemeav400,
112 	.cnt = ARRAY_SIZE(routing_schemeav400),
113 };
114 
115 static const struct routing_scheme *routing_schemes[] = {
116 	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
117 	[PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
118 	[PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
119 };
120 
121 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
122 {
123 	pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
124 	if (hdw->input_dirty || hdw->force_dirty) {
125 		enum cx25840_video_input vid_input;
126 		enum cx25840_audio_input aud_input;
127 		const struct routing_scheme *sp;
128 		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
129 
130 		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
131 			routing_schemes[sid] : NULL;
132 		if ((sp == NULL) ||
133 		    (hdw->input_val < 0) ||
134 		    (hdw->input_val >= sp->cnt)) {
135 			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
136 				   "*** WARNING *** subdev cx2584x set_input: Invalid routing scheme (%u) and/or input (%d)",
137 				   sid, hdw->input_val);
138 			return;
139 		}
140 		vid_input = sp->def[hdw->input_val].vid;
141 		aud_input = sp->def[hdw->input_val].aud;
142 		pvr2_trace(PVR2_TRACE_CHIPS,
143 			   "subdev cx2584x set_input vid=0x%x aud=0x%x",
144 			   vid_input, aud_input);
145 		sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
146 		sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
147 	}
148 }
149