drivers/media/usb/pvrusb2/pvrusb2-cx2584x-v4l.c

   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  *  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
  41 struct routing_scheme_item {
  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         },
  60         [PVR2_CVAL_INPUT_COMPOSITE] = {
  61                 .vid = CX25840_COMPOSITE3,
  62                 .aud = CX25840_AUDIO_SERIAL,
  63         },
  64         [PVR2_CVAL_INPUT_SVIDEO] = {
  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         },
  81         [PVR2_CVAL_INPUT_RADIO] = {
  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         },
  87         [PVR2_CVAL_INPUT_COMPOSITE] = {
  88                 .vid = CX25840_COMPOSITE1,
  89                 .aud = CX25840_AUDIO_SERIAL,
  90         },
  91         [PVR2_CVAL_INPUT_SVIDEO] = {
  92                 .vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
  93                 .aud = CX25840_AUDIO_SERIAL,
  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[] = {
 104         [PVR2_CVAL_INPUT_COMPOSITE] = {
 105                 .vid = CX25840_COMPOSITE1,
 106                 .aud = CX25840_AUDIO_SERIAL,
 107         },
 108         [PVR2_CVAL_INPUT_SVIDEO] = {
 109                 .vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
 110                 .aud = CX25840_AUDIO_SERIAL,
 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
 125 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 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)) {
 139                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 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;
 148                 pvr2_trace(PVR2_TRACE_CHIPS,
 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   */