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 static const struct routing_scheme routing_def0 = {
  72         .def = routing_scheme0,
  73         .cnt = ARRAY_SIZE(routing_scheme0),
  74 };
  75
  76 /* Specific to gotview device */
  77 static const struct routing_scheme_item routing_schemegv[] = {
  78         [PVR2_CVAL_INPUT_TV] = {
  79                 .vid = CX25840_COMPOSITE2,
  80                 .aud = CX25840_AUDIO5,
  81         },
  82         [PVR2_CVAL_INPUT_RADIO] = {
  83                 /* line-in is used for radio and composite.  A GPIO is
  84                    used to switch between the two choices. */
  85                 .vid = CX25840_COMPOSITE1,
  86                 .aud = CX25840_AUDIO_SERIAL,
  87         },
  88         [PVR2_CVAL_INPUT_COMPOSITE] = {
  89                 .vid = CX25840_COMPOSITE1,
  90                 .aud = CX25840_AUDIO_SERIAL,
  91         },
  92         [PVR2_CVAL_INPUT_SVIDEO] = {
  93                 .vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
  94                 .aud = CX25840_AUDIO_SERIAL,
  95         },
  96 };
  97
  98 static const struct routing_scheme routing_defgv = {
  99         .def = routing_schemegv,
 100         .cnt = ARRAY_SIZE(routing_schemegv),
 101 };
 102
 103 static const struct routing_scheme *routing_schemes[] = {
 104         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 105         [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 106 };
 107
 108 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 109 {
 110         pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
 111         if (hdw->input_dirty || hdw->force_dirty) {
 112                 enum cx25840_video_input vid_input;
 113                 enum cx25840_audio_input aud_input;
 114                 const struct routing_scheme *sp;
 115                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 116
 117                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
 118                         routing_schemes[sid] : NULL;
 119                 if ((sp == NULL) ||
 120                     (hdw->input_val < 0) ||
 121                     (hdw->input_val >= sp->cnt)) {
 122                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 123                                    "*** WARNING *** subdev cx2584x set_input:"
 124                                    " Invalid routing scheme (%u)"
 125                                    " and/or input (%d)",
 126                                    sid, hdw->input_val);
 127                         return;
 128                 }
 129                 vid_input = sp->def[hdw->input_val].vid;
 130                 aud_input = sp->def[hdw->input_val].aud;
 131                 pvr2_trace(PVR2_TRACE_CHIPS,
 132                            "subdev cx2584x set_input vid=0x%x aud=0x%x",
 133                            vid_input, aud_input);
 134                 sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
 135                 sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
 136         }
 137 }
 138
 139
 140
 141 /*
 142   Stuff for Emacs to see, in order to encourage consistent editing style:
 143   *** Local Variables: ***
 144   *** mode: c ***
 145   *** fill-column: 70 ***
 146   *** tab-width: 8 ***
 147   *** c-basic-offset: 8 ***
 148   *** End: ***
 149   */