LXR linux/drivers/media/video/pvrusb2/pvrusb2-video-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   saa711x support that is available in the v4l available starting
  26   with linux 2.6.15.
  27
  28*/
  29
  30#include "pvrusb2-video-v4l.h"
  31
  32
  33
  34#include "pvrusb2-hdw-internal.h"
  35#include "pvrusb2-debug.h"
  36#include <linux/videodev2.h>
  37#include <media/v4l2-common.h>
  38#include <media/saa7115.h>
  39#include <linux/errno.h>
  40#include <linux/slab.h>
  41
  42struct routing_scheme {
  43        const int *def;
  44        unsigned int cnt;
  45};
  46
  47
  48static const int routing_scheme0[] = {
  49        [PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
  50        /* In radio mode, we mute the video, but point at one
  51           spot just to stay consistent */
  52        [PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
  53        [PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE5,
  54        [PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2,
  55};
  56
  57static const struct routing_scheme routing_def0 = {
  58        .def = routing_scheme0,
  59        .cnt = ARRAY_SIZE(routing_scheme0),
  60};
  61
  62static const int routing_scheme1[] = {
  63        [PVR2_CVAL_INPUT_TV] = SAA7115_COMPOSITE4,
  64        [PVR2_CVAL_INPUT_RADIO] = SAA7115_COMPOSITE5,
  65        [PVR2_CVAL_INPUT_COMPOSITE] = SAA7115_COMPOSITE3,
  66        [PVR2_CVAL_INPUT_SVIDEO] =  SAA7115_SVIDEO2, /* or SVIDEO0, it seems */
  67};
  68
  69static const struct routing_scheme routing_def1 = {
  70        .def = routing_scheme1,
  71        .cnt = ARRAY_SIZE(routing_scheme1),
  72};
  73
  74static const struct routing_scheme *routing_schemes[] = {
  75        [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
  76        [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  77};
  78
  79void pvr2_saa7115_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  80{
  81        if (hdw->input_dirty || hdw->force_dirty) {
  82                const struct routing_scheme *sp;
  83                unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  84                u32 input;
  85
  86                pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  87                           hdw->input_val);
  88
  89                sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  90                        routing_schemes[sid] : NULL;
  91                if ((sp == NULL) ||
  92                    (hdw->input_val < 0) ||
  93                    (hdw->input_val >= sp->cnt)) {
  94                        pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  95                                   "*** WARNING *** subdev v4l2 set_input:"
  96                                   " Invalid routing scheme (%u)"
  97                                   " and/or input (%d)",
  98                                   sid, hdw->input_val);
  99                        return;
 100                }
 101                input = sp->def[hdw->input_val];
 102                sd->ops->video->s_routing(sd, input, 0, 0);
 103        }
 104}
 105
 106
 107/*
 108  Stuff for Emacs to see, in order to encourage consistent editing style:
 109  *** Local Variables: ***
 110  *** mode: c ***
 111  *** fill-column: 70 ***
 112  *** tab-width: 8 ***
 113  *** c-basic-offset: 8 ***
 114  *** End: ***
 115  */
 116