drivers/media/video/pvrusb2/pvrusb2-cx2584x-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    cx2584x, in kernels 2.6.16 or newer.
  26
  27 */
  28
  29 #include "pvrusb2-cx2584x-v4l.h"
  30 #include "pvrusb2-video-v4l.h"
  31
  32
  33 #include "pvrusb2-hdw-internal.h"
  34 #include "pvrusb2-debug.h"
  35 #include <media/cx25840.h>
  36 #include <linux/videodev2.h>
  37 #include <media/v4l2-common.h>
  38 #include <linux/errno.h>
  39 #include <linux/slab.h>
  40
  41
  42 struct routing_scheme_item {
  43         int vid;
  44         int aud;
  45 };
  46
  47 struct routing_scheme {
  48         const struct routing_scheme_item *def;
  49         unsigned int cnt;
  50 };
  51
  52 static const struct routing_scheme_item routing_scheme0[] = {
  53         [PVR2_CVAL_INPUT_TV] = {
  54                 .vid = CX25840_COMPOSITE7,
  55                 .aud = CX25840_AUDIO8,
  56         },
  57         [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
  58                 .vid = CX25840_COMPOSITE3,
  59                 .aud = CX25840_AUDIO_SERIAL,
  60         },
  61         [PVR2_CVAL_INPUT_COMPOSITE] = {
  62                 .vid = CX25840_COMPOSITE3,
  63                 .aud = CX25840_AUDIO_SERIAL,
  64         },
  65         [PVR2_CVAL_INPUT_SVIDEO] = {
  66                 .vid = CX25840_SVIDEO1,
  67                 .aud = CX25840_AUDIO_SERIAL,
  68         },
  69 };
  70
  71 /* Specific to gotview device */
  72 static const struct routing_scheme_item routing_schemegv[] = {
  73         [PVR2_CVAL_INPUT_TV] = {
  74                 .vid = CX25840_COMPOSITE2,
  75                 .aud = CX25840_AUDIO5,
  76         },
  77         [PVR2_CVAL_INPUT_RADIO] = {
  78                 /* line-in is used for radio and composite.  A GPIO is
  79                    used to switch between the two choices. */
  80                 .vid = CX25840_COMPOSITE1,
  81                 .aud = CX25840_AUDIO_SERIAL,
  82         },
  83         [PVR2_CVAL_INPUT_COMPOSITE] = {
  84                 .vid = CX25840_COMPOSITE1,
  85                 .aud = CX25840_AUDIO_SERIAL,
  86         },
  87         [PVR2_CVAL_INPUT_SVIDEO] = {
  88                 .vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
  89                 .aud = CX25840_AUDIO_SERIAL,
  90         },
  91 };
  92
  93 static const struct routing_scheme routing_schemes[] = {
  94         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
  95                 .def = routing_scheme0,
  96                 .cnt = ARRAY_SIZE(routing_scheme0),
  97         },
  98         [PVR2_ROUTING_SCHEME_GOTVIEW] = {
  99                 .def = routing_schemegv,
 100                 .cnt = ARRAY_SIZE(routing_schemegv),
 101         },
 102 };
 103
 104 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 105 {
 106         pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
 107         if (hdw->input_dirty || hdw->force_dirty) {
 108                 enum cx25840_video_input vid_input;
 109                 enum cx25840_audio_input aud_input;
 110                 const struct routing_scheme *sp;
 111                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 112
 113                 if ((sid < ARRAY_SIZE(routing_schemes)) &&
 114                     ((sp = routing_schemes + sid) != NULL) &&
 115                     (hdw->input_val >= 0) &&
 116                     (hdw->input_val < sp->cnt)) {
 117                         vid_input = sp->def[hdw->input_val].vid;
 118                         aud_input = sp->def[hdw->input_val].aud;
 119                 } else {
 120                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 121                                    "*** WARNING *** subdev cx2584x set_input:"
 122                                    " Invalid routing scheme (%u)"
 123                                    " and/or input (%d)",
 124                                    sid, hdw->input_val);
 125                         return;
 126                 }
 127
 128                 pvr2_trace(PVR2_TRACE_CHIPS,
 129                            "subdev cx2584x set_input vid=0x%x aud=0x%x",
 130                            vid_input, aud_input);
 131                 sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
 132                 sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
 133         }
 134 }
 135
 136
 137
 138 /*
 139   Stuff for Emacs to see, in order to encourage consistent editing style:
 140   *** Local Variables: ***
 141   *** mode: c ***
 142   *** fill-column: 70 ***
 143   *** tab-width: 8 ***
 144   *** c-basic-offset: 8 ***
 145   *** End: ***
 146   */