Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
pvrusb2-cx2584x-v4l.c
Go to the documentation of this file.
1 /*
2  *
3  *
4  * Copyright (C) 2005 Mike Isely <[email protected]>
5  * Copyright (C) 2004 Aurelien Alleaume <[email protected]>
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  cx2584x, in kernels 2.6.16 or newer.
26 
27 */
28 
29 #include "pvrusb2-cx2584x-v4l.h"
30 #include "pvrusb2-video-v4l.h"
31 
32 
33 #include "pvrusb2-hdw-internal.h"
34 #include "pvrusb2-debug.h"
35 #include <media/cx25840.h>
36 #include <linux/videodev2.h>
37 #include <media/v4l2-common.h>
38 #include <linux/errno.h>
39 
40 
42  int vid;
43  int aud;
44 };
45 
46 struct routing_scheme {
47  const struct routing_scheme_item *def;
48  unsigned int cnt;
49 };
50 
51 static const struct routing_scheme_item routing_scheme0[] = {
52  [PVR2_CVAL_INPUT_TV] = {
53  .vid = CX25840_COMPOSITE7,
54  .aud = CX25840_AUDIO8,
55  },
56  [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
57  .vid = CX25840_COMPOSITE3,
58  .aud = CX25840_AUDIO_SERIAL,
59  },
61  .vid = CX25840_COMPOSITE3,
62  .aud = CX25840_AUDIO_SERIAL,
63  },
65  .vid = CX25840_SVIDEO1,
66  .aud = CX25840_AUDIO_SERIAL,
67  },
68 };
69 
70 static const struct routing_scheme routing_def0 = {
71  .def = routing_scheme0,
72  .cnt = ARRAY_SIZE(routing_scheme0),
73 };
74 
75 /* Specific to gotview device */
76 static const struct routing_scheme_item routing_schemegv[] = {
77  [PVR2_CVAL_INPUT_TV] = {
78  .vid = CX25840_COMPOSITE2,
79  .aud = CX25840_AUDIO5,
80  },
82  /* line-in is used for radio and composite. A GPIO is
83  used to switch between the two choices. */
84  .vid = CX25840_COMPOSITE1,
85  .aud = CX25840_AUDIO_SERIAL,
86  },
88  .vid = CX25840_COMPOSITE1,
89  .aud = CX25840_AUDIO_SERIAL,
90  },
94  },
95 };
96 
97 static const struct routing_scheme routing_defgv = {
98  .def = routing_schemegv,
99  .cnt = ARRAY_SIZE(routing_schemegv),
100 };
101 
102 /* Specific to grabster av400 device */
103 static const struct routing_scheme_item routing_schemeav400[] = {
105  .vid = CX25840_COMPOSITE1,
106  .aud = CX25840_AUDIO_SERIAL,
107  },
111  },
112 };
113 
114 static const struct routing_scheme routing_defav400 = {
115  .def = routing_schemeav400,
116  .cnt = ARRAY_SIZE(routing_schemeav400),
117 };
118 
119 static const struct routing_scheme *routing_schemes[] = {
120  [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
121  [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
122  [PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
123 };
124 
126 {
127  pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
128  if (hdw->input_dirty || hdw->force_dirty) {
129  enum cx25840_video_input vid_input;
130  enum cx25840_audio_input aud_input;
131  const struct routing_scheme *sp;
132  unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
133 
134  sp = (sid < ARRAY_SIZE(routing_schemes)) ?
135  routing_schemes[sid] : NULL;
136  if ((sp == NULL) ||
137  (hdw->input_val < 0) ||
138  (hdw->input_val >= sp->cnt)) {
140  "*** WARNING *** subdev cx2584x set_input:"
141  " Invalid routing scheme (%u)"
142  " and/or input (%d)",
143  sid, hdw->input_val);
144  return;
145  }
146  vid_input = sp->def[hdw->input_val].vid;
147  aud_input = sp->def[hdw->input_val].aud;
149  "subdev cx2584x set_input vid=0x%x aud=0x%x",
150  vid_input, aud_input);
151  sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
152  sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
153  }
154 }
155 
156 
157 
158 /*
159  Stuff for Emacs to see, in order to encourage consistent editing style:
160  *** Local Variables: ***
161  *** mode: c ***
162  *** fill-column: 70 ***
163  *** tab-width: 8 ***
164  *** c-basic-offset: 8 ***
165  *** End: ***
166  */