drivers/media/usb/pvrusb2/pvrusb2-cs53l32a.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    v4l-dvb cs53l32a module.
  26
  27 */
  28
  29 #include "pvrusb2-cs53l32a.h"
  30
  31
  32 #include "pvrusb2-hdw-internal.h"
  33 #include "pvrusb2-debug.h"
  34 #include <linux/videodev2.h>
  35 #include <media/v4l2-common.h>
  36 #include <linux/errno.h>
  37
  38 struct routing_scheme {
  39         const int *def;
  40         unsigned int cnt;
  41 };
  42
  43
  44 static const int routing_scheme1[] = {
  45         [PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
  46         [PVR2_CVAL_INPUT_RADIO] = 2,
  47         [PVR2_CVAL_INPUT_COMPOSITE] = 0,
  48         [PVR2_CVAL_INPUT_SVIDEO] =  0,
  49 };
  50
  51 static const struct routing_scheme routing_def1 = {
  52         .def = routing_scheme1,
  53         .cnt = ARRAY_SIZE(routing_scheme1),
  54 };
  55
  56 static const struct routing_scheme *routing_schemes[] = {
  57         [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  58 };
  59
  60
  61 void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  62 {
  63         if (hdw->input_dirty || hdw->force_dirty) {
  64                 const struct routing_scheme *sp;
  65                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  66                 u32 input;
  67                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  68                            hdw->input_val);
  69                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  70                         routing_schemes[sid] : NULL;
  71                 if ((sp == NULL) ||
  72                     (hdw->input_val < 0) ||
  73                     (hdw->input_val >= sp->cnt)) {
  74                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  75                                    "*** WARNING *** subdev v4l2 set_input:"
  76                                    " Invalid routing scheme (%u)"
  77                                    " and/or input (%d)",
  78                                    sid, hdw->input_val);
  79                         return;
  80                 }
  81                 input = sp->def[hdw->input_val];
  82                 sd->ops->audio->s_routing(sd, input, 0, 0);
  83         }
  84 }