LXR linux/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 *  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
  40
  41struct routing_scheme_item {
  42        int vid;
  43        int aud;
  44};
  45
  46struct routing_scheme {
  47        const struct routing_scheme_item *def;
  48        unsigned int cnt;
  49};
  50
  51static const struct routing_scheme_item routing_scheme0[] = {
  52        [PVR2_CVAL_INPUT_TV] = {
  53                .vid = CX25840_COMPOSITE7,
  54                .aud = CX25840_AUDIO8,
  55        },
  56        [PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
  57                .vid = CX25840_COMPOSITE3,
  58                .aud = CX25840_AUDIO_SERIAL,
  59        },
  60        [PVR2_CVAL_INPUT_COMPOSITE] = {
  61                .vid = CX25840_COMPOSITE3,
  62                .aud = CX25840_AUDIO_SERIAL,
  63        },
  64        [PVR2_CVAL_INPUT_SVIDEO] = {
  65                .vid = CX25840_SVIDEO1,
  66                .aud = CX25840_AUDIO_SERIAL,
  67        },
  68};
  69
  70static const struct routing_scheme routing_def0 = {
  71        .def = routing_scheme0,
  72        .cnt = ARRAY_SIZE(routing_scheme0),
  73};
  74
  75/* Specific to gotview device */
  76static const struct routing_scheme_item routing_schemegv[] = {
  77        [PVR2_CVAL_INPUT_TV] = {
  78                .vid = CX25840_COMPOSITE2,
  79                .aud = CX25840_AUDIO5,
  80        },
  81        [PVR2_CVAL_INPUT_RADIO] = {
  82                /* line-in is used for radio and composite.  A GPIO is
  83                   used to switch between the two choices. */
  84                .vid = CX25840_COMPOSITE1,
  85                .aud = CX25840_AUDIO_SERIAL,
  86        },
  87        [PVR2_CVAL_INPUT_COMPOSITE] = {
  88                .vid = CX25840_COMPOSITE1,
  89                .aud = CX25840_AUDIO_SERIAL,
  90        },
  91        [PVR2_CVAL_INPUT_SVIDEO] = {
  92                .vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
  93                .aud = CX25840_AUDIO_SERIAL,
  94        },
  95};
  96
  97static const struct routing_scheme routing_defgv = {
  98        .def = routing_schemegv,
  99        .cnt = ARRAY_SIZE(routing_schemegv),
 100};
 101
 102/* Specific to grabster av400 device */
 103static const struct routing_scheme_item routing_schemeav400[] = {
 104        [PVR2_CVAL_INPUT_COMPOSITE] = {
 105                .vid = CX25840_COMPOSITE1,
 106                .aud = CX25840_AUDIO_SERIAL,
 107        },
 108        [PVR2_CVAL_INPUT_SVIDEO] = {
 109                .vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
 110                .aud = CX25840_AUDIO_SERIAL,
 111        },
 112};
 113
 114static const struct routing_scheme routing_defav400 = {
 115        .def = routing_schemeav400,
 116        .cnt = ARRAY_SIZE(routing_schemeav400),
 117};
 118
 119static const struct routing_scheme *routing_schemes[] = {
 120        [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
 121        [PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
 122        [PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
 123};
 124
 125void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
 126{
 127        pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
 128        if (hdw->input_dirty || hdw->force_dirty) {
 129                enum cx25840_video_input vid_input;
 130                enum cx25840_audio_input aud_input;
 131                const struct routing_scheme *sp;
 132                unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
 133
 134                sp = (sid < ARRAY_SIZE(routing_schemes)) ?
 135                        routing_schemes[sid] : NULL;
 136                if ((sp == NULL) ||
 137                    (hdw->input_val < 0) ||
 138                    (hdw->input_val >= sp->cnt)) {
 139                        pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 140                                   "*** WARNING *** subdev cx2584x set_input:"
 141                                   " Invalid routing scheme (%u)"
 142                                   " and/or input (%d)",
 143                                   sid, hdw->input_val);
 144                        return;
 145                }
 146                vid_input = sp->def[hdw->input_val].vid;
 147                aud_input = sp->def[hdw->input_val].aud;
 148                pvr2_trace(PVR2_TRACE_CHIPS,
 149                           "subdev cx2584x set_input vid=0x%x aud=0x%x",
 150                           vid_input, aud_input);
 151                sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
 152                sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
 153        }
 154}
 155
 156
 157
 158/*
 159  Stuff for Emacs to see, in order to encourage consistent editing style:
 160  *** Local Variables: ***
 161  *** mode: c ***
 162  *** fill-column: 70 ***
 163  *** tab-width: 8 ***
 164  *** c-basic-offset: 8 ***
 165  *** End: ***
 166  */
 167