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  */
  17
  18 /*
  19
  20    This source file is specifically designed to interface with the
  21    v4l-dvb cs53l32a module.
  22
  23 */
  24
  25 #include "pvrusb2-cs53l32a.h"
  26
  27
  28 #include "pvrusb2-hdw-internal.h"
  29 #include "pvrusb2-debug.h"
  30 #include <linux/videodev2.h>
  31 #include <media/v4l2-common.h>
  32 #include <linux/errno.h>
  33
  34 struct routing_scheme {
  35         const int *def;
  36         unsigned int cnt;
  37 };
  38
  39
  40 static const int routing_scheme1[] = {
  41         [PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
  42         [PVR2_CVAL_INPUT_RADIO] = 2,
  43         [PVR2_CVAL_INPUT_COMPOSITE] = 0,
  44         [PVR2_CVAL_INPUT_SVIDEO] =  0,
  45 };
  46
  47 static const struct routing_scheme routing_def1 = {
  48         .def = routing_scheme1,
  49         .cnt = ARRAY_SIZE(routing_scheme1),
  50 };
  51
  52 static const struct routing_scheme *routing_schemes[] = {
  53         [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  54 };
  55
  56
  57 void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  58 {
  59         if (hdw->input_dirty || hdw->force_dirty) {
  60                 const struct routing_scheme *sp;
  61                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  62                 u32 input;
  63                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  64                            hdw->input_val);
  65                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  66                         routing_schemes[sid] : NULL;
  67                 if ((sp == NULL) ||
  68                     (hdw->input_val < 0) ||
  69                     (hdw->input_val >= sp->cnt)) {
  70                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  71                                    "*** WARNING *** subdev v4l2 set_input: Invalid routing scheme (%u) and/or input (%d)",
  72                                    sid, hdw->input_val);
  73                         return;
  74                 }
  75                 input = sp->def[hdw->input_val];
  76                 sd->ops->audio->s_routing(sd, input, 0, 0);
  77         }
  78 }