LXR linux/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
  42struct routing_scheme_item {
  43        int vid;
  44        int aud;
  45};
  46
  47struct routing_scheme {
  48        const struct routing_scheme_item *def;
  49        unsigned int cnt;
  50};
  51
  52static 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
  71static const struct routing_scheme routing_def0 = {
  72        .def = routing_scheme0,
  73        .cnt = ARRAY_SIZE(routing_scheme0),
  74};
  75
  76/* Specific to gotview device */
  77static 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
  98static const struct routing_scheme routing_defgv = {
  99        .def = routing_schemegv,
 100        .cnt = ARRAY_SIZE(routing_schemegv),
 101};
 102
 103static const struct routing_scheme *routing_schemes[] = {
 104        [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 105        [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 106};
 107
 108void 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  */
 150