LXR linux/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
  39struct routing_scheme {
  40        const int *def;
  41        unsigned int cnt;
  42};
  43
  44
  45static 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
  52static const struct routing_scheme routing_def1 = {
  53        .def = routing_scheme1,
  54        .cnt = ARRAY_SIZE(routing_scheme1),
  55};
  56
  57static const struct routing_scheme *routing_schemes[] = {
  58        [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  59};
  60
  61
  62void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  63{
  64        if (hdw->input_dirty || hdw->force_dirty) {
  65                const struct routing_scheme *sp;
  66                unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  67                u32 input;
  68                pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  69                           hdw->input_val);
  70                sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  71                        routing_schemes[sid] : NULL;
  72                if ((sp == NULL) ||
  73                    (hdw->input_val < 0) ||
  74                    (hdw->input_val >= sp->cnt)) {
  75                        pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  76                                   "*** WARNING *** subdev v4l2 set_input:"
  77                                   " Invalid routing scheme (%u)"
  78                                   " and/or input (%d)",
  79                                   sid, hdw->input_val);
  80                        return;
  81                }
  82                input = sp->def[hdw->input_val];
  83                sd->ops->audio->s_routing(sd, input, 0, 0);
  84        }
  85}
  86
  87
  88/*
  89  Stuff for Emacs to see, in order to encourage consistent editing style:
  90  *** Local Variables: ***
  91  *** mode: c ***
  92  *** fill-column: 70 ***
  93  *** tab-width: 8 ***
  94  *** c-basic-offset: 8 ***
  95  *** End: ***
  96  */
  97