drivers/media/video/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 #include <linux/slab.h>
  38
  39 struct routing_scheme {
  40         const int *def;
  41         unsigned int cnt;
  42 };
  43
  44
  45 static const int routing_scheme1[] = {
  46         [PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
  47         [PVR2_CVAL_INPUT_RADIO] = 2,
  48         [PVR2_CVAL_INPUT_COMPOSITE] = 0,
  49         [PVR2_CVAL_INPUT_SVIDEO] =  0,
  50 };
  51
  52 static const struct routing_scheme routing_schemes[] = {
  53         [PVR2_ROUTING_SCHEME_ONAIR] = {
  54                 .def = routing_scheme1,
  55                 .cnt = ARRAY_SIZE(routing_scheme1),
  56         },
  57 };
  58
  59
  60 void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  61 {
  62         if (hdw->input_dirty || hdw->force_dirty) {
  63                 struct v4l2_routing route;
  64                 const struct routing_scheme *sp;
  65                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  66                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  67                            hdw->input_val);
  68                 if ((sid < ARRAY_SIZE(routing_schemes)) &&
  69                     ((sp = routing_schemes + sid) != NULL) &&
  70                     (hdw->input_val >= 0) &&
  71                     (hdw->input_val < sp->cnt)) {
  72                         route.input = sp->def[hdw->input_val];
  73                 } else {
  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                 route.output = 0;
  82                 sd->ops->audio->s_routing(sd, &route);
  83         }
  84 }
  85
  86
  87 /*
  88   Stuff for Emacs to see, in order to encourage consistent editing style:
  89   *** Local Variables: ***
  90   *** mode: c ***
  91   *** fill-column: 70 ***
  92   *** tab-width: 8 ***
  93   *** c-basic-offset: 8 ***
  94   *** End: ***
  95   */