drivers/media/usb/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  */
  17
  18 /*
  19
  20    This source file is specifically designed to interface with the
  21    cx2584x, in kernels 2.6.16 or newer.
  22
  23 */
  24
  25 #include "pvrusb2-cx2584x-v4l.h"
  26 #include "pvrusb2-video-v4l.h"
  27
  28
  29 #include "pvrusb2-hdw-internal.h"
  30 #include "pvrusb2-debug.h"
  31 #include <media/drv-intf/cx25840.h>
  32 #include <linux/videodev2.h>
  33 #include <media/v4l2-common.h>
  34 #include <linux/errno.h>
  35
  36
  37 struct routing_scheme_item {
  38         int vid;
  39         int aud;
  40 };
  41
  42 struct routing_scheme {
  43         const struct routing_scheme_item *def;
  44         unsigned int cnt;
  45 };
  46
  47 static const struct routing_scheme_item routing_scheme0[] = {
  48         [PVR2_CVAL_INPUT_TV] = {
  49                 .vid = CX25840_COMPOSITE7,
  50                 .aud = CX25840_AUDIO8,
  51         },
  52         [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
  53                 .vid = CX25840_COMPOSITE3,
  54                 .aud = CX25840_AUDIO_SERIAL,
  55         },
  56         [PVR2_CVAL_INPUT_COMPOSITE] = {
  57                 .vid = CX25840_COMPOSITE3,
  58                 .aud = CX25840_AUDIO_SERIAL,
  59         },
  60         [PVR2_CVAL_INPUT_SVIDEO] = {
  61                 .vid = CX25840_SVIDEO1,
  62                 .aud = CX25840_AUDIO_SERIAL,
  63         },
  64 };
  65
  66 static const struct routing_scheme routing_def0 = {
  67         .def = routing_scheme0,
  68         .cnt = ARRAY_SIZE(routing_scheme0),
  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_defgv = {
  94         .def = routing_schemegv,
  95         .cnt = ARRAY_SIZE(routing_schemegv),
  96 };
  97
  98 /* Specific to grabster av400 device */
  99 static const struct routing_scheme_item routing_schemeav400[] = {
 100         [PVR2_CVAL_INPUT_COMPOSITE] = {
 101                 .vid = CX25840_COMPOSITE1,
 102                 .aud = CX25840_AUDIO_SERIAL,
 103         },
 104         [PVR2_CVAL_INPUT_SVIDEO] = {
 105                 .vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
 106                 .aud = CX25840_AUDIO_SERIAL,
 107         },
 108 };
 109
 110 static const struct routing_scheme routing_defav400 = {
 111         .def = routing_schemeav400,
 112         .cnt = ARRAY_SIZE(routing_schemeav400),
 113 };
 114
 115 static const struct routing_scheme *routing_schemes[] = {
 116         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 117         [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 118         [PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
 119 };
 120
 121 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 122 {
 123         pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
 124         if (hdw->input_dirty || hdw->force_dirty) {
 125                 enum cx25840_video_input vid_input;
 126                 enum cx25840_audio_input aud_input;
 127                 const struct routing_scheme *sp;
 128                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 129
 130                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
 131                         routing_schemes[sid] : NULL;
 132                 if ((sp == NULL) ||
 133                     (hdw->input_val < 0) ||
 134                     (hdw->input_val >= sp->cnt)) {
 135                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 136                                    "*** WARNING *** subdev cx2584x set_input: Invalid routing scheme (%u) and/or input (%d)",
 137                                    sid, hdw->input_val);
 138                         return;
 139                 }
 140                 vid_input = sp->def[hdw->input_val].vid;
 141                 aud_input = sp->def[hdw->input_val].aud;
 142                 pvr2_trace(PVR2_TRACE_CHIPS,
 143                            "subdev cx2584x set_input vid=0x%x aud=0x%x",
 144                            vid_input, aud_input);
 145                 sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
 146                 sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
 147         }
 148 }