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
  27
  28 #include "pvrusb2-hdw-internal.h"
  29 #include "pvrusb2-debug.h"
  30 #include <media/drv-intf/cx25840.h>
  31 #include <linux/videodev2.h>
  32 #include <media/v4l2-common.h>
  33 #include <linux/errno.h>
  34
  35
  36 struct routing_scheme_item {
  37         int vid;
  38         int aud;
  39 };
  40
  41 struct routing_scheme {
  42         const struct routing_scheme_item *def;
  43         unsigned int cnt;
  44 };
  45
  46 static const struct routing_scheme_item routing_scheme0[] = {
  47         [PVR2_CVAL_INPUT_TV] = {
  48                 .vid = CX25840_COMPOSITE7,
  49                 .aud = CX25840_AUDIO8,
  50         },
  51         [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
  52                 .vid = CX25840_COMPOSITE3,
  53                 .aud = CX25840_AUDIO_SERIAL,
  54         },
  55         [PVR2_CVAL_INPUT_COMPOSITE] = {
  56                 .vid = CX25840_COMPOSITE3,
  57                 .aud = CX25840_AUDIO_SERIAL,
  58         },
  59         [PVR2_CVAL_INPUT_SVIDEO] = {
  60                 .vid = CX25840_SVIDEO1,
  61                 .aud = CX25840_AUDIO_SERIAL,
  62         },
  63 };
  64
  65 static const struct routing_scheme routing_def0 = {
  66         .def = routing_scheme0,
  67         .cnt = ARRAY_SIZE(routing_scheme0),
  68 };
  69
  70 /* Specific to gotview device */
  71 static const struct routing_scheme_item routing_schemegv[] = {
  72         [PVR2_CVAL_INPUT_TV] = {
  73                 .vid = CX25840_COMPOSITE2,
  74                 .aud = CX25840_AUDIO5,
  75         },
  76         [PVR2_CVAL_INPUT_RADIO] = {
  77                 /* line-in is used for radio and composite.  A GPIO is
  78                    used to switch between the two choices. */
  79                 .vid = CX25840_COMPOSITE1,
  80                 .aud = CX25840_AUDIO_SERIAL,
  81         },
  82         [PVR2_CVAL_INPUT_COMPOSITE] = {
  83                 .vid = CX25840_COMPOSITE1,
  84                 .aud = CX25840_AUDIO_SERIAL,
  85         },
  86         [PVR2_CVAL_INPUT_SVIDEO] = {
  87                 .vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
  88                 .aud = CX25840_AUDIO_SERIAL,
  89         },
  90 };
  91
  92 static const struct routing_scheme routing_defgv = {
  93         .def = routing_schemegv,
  94         .cnt = ARRAY_SIZE(routing_schemegv),
  95 };
  96
  97 /* Specific to grabster av400 device */
  98 static const struct routing_scheme_item routing_schemeav400[] = {
  99         [PVR2_CVAL_INPUT_COMPOSITE] = {
 100                 .vid = CX25840_COMPOSITE1,
 101                 .aud = CX25840_AUDIO_SERIAL,
 102         },
 103         [PVR2_CVAL_INPUT_SVIDEO] = {
 104                 .vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
 105                 .aud = CX25840_AUDIO_SERIAL,
 106         },
 107 };
 108
 109 static const struct routing_scheme routing_defav400 = {
 110         .def = routing_schemeav400,
 111         .cnt = ARRAY_SIZE(routing_schemeav400),
 112 };
 113
 114 static const struct routing_scheme *routing_schemes[] = {
 115         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 116         [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 117         [PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
 118 };
 119
 120 void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 121 {
 122         pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
 123         if (hdw->input_dirty || hdw->force_dirty) {
 124                 enum cx25840_video_input vid_input;
 125                 enum cx25840_audio_input aud_input;
 126                 const struct routing_scheme *sp;
 127                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 128
 129                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
 130                         routing_schemes[sid] : NULL;
 131                 if ((sp == NULL) ||
 132                     (hdw->input_val < 0) ||
 133                     (hdw->input_val >= sp->cnt)) {
 134                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 135                                    "*** WARNING *** subdev cx2584x set_input: Invalid routing scheme (%u) and/or input (%d)",
 136                                    sid, hdw->input_val);
 137                         return;
 138                 }
 139                 vid_input = sp->def[hdw->input_val].vid;
 140                 aud_input = sp->def[hdw->input_val].aud;
 141                 pvr2_trace(PVR2_TRACE_CHIPS,
 142                            "subdev cx2584x set_input vid=0x%x aud=0x%x",
 143                            vid_input, aud_input);
 144                 sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
 145                 sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
 146         }
 147 }