kernel/drivers/media/usb/pvrusb2/pvrusb2-audio.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 #include "pvrusb2-audio.h"
  23 #include "pvrusb2-hdw-internal.h"
  24 #include "pvrusb2-debug.h"
  25 #include <linux/videodev2.h>
  26 #include <media/msp3400.h>
  27 #include <media/v4l2-common.h>
  28
  29
  30 struct routing_scheme {
  31         const int *def;
  32         unsigned int cnt;
  33 };
  34
  35 static const int routing_scheme0[] = {
  36         [PVR2_CVAL_INPUT_TV]        = MSP_INPUT_DEFAULT,
  37         [PVR2_CVAL_INPUT_RADIO]     = MSP_INPUT(MSP_IN_SCART2,
  38                                                 MSP_IN_TUNER1,
  39                                                 MSP_DSP_IN_SCART,
  40                                                 MSP_DSP_IN_SCART),
  41         [PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
  42                                                 MSP_IN_TUNER1,
  43                                                 MSP_DSP_IN_SCART,
  44                                                 MSP_DSP_IN_SCART),
  45         [PVR2_CVAL_INPUT_SVIDEO]    = MSP_INPUT(MSP_IN_SCART1,
  46                                                 MSP_IN_TUNER1,
  47                                                 MSP_DSP_IN_SCART,
  48                                                 MSP_DSP_IN_SCART),
  49 };
  50
  51 static const struct routing_scheme routing_def0 = {
  52         .def = routing_scheme0,
  53         .cnt = ARRAY_SIZE(routing_scheme0),
  54 };
  55
  56 static const struct routing_scheme *routing_schemes[] = {
  57         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
  58 };
  59
  60 void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  61 {
  62         if (hdw->input_dirty || hdw->force_dirty) {
  63                 const struct routing_scheme *sp;
  64                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  65                 u32 input;
  66
  67                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev msp3400 v4l2 set_stereo");
  68                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  69                         routing_schemes[sid] : NULL;
  70
  71                 if ((sp != NULL) &&
  72                     (hdw->input_val >= 0) &&
  73                     (hdw->input_val < sp->cnt)) {
  74                         input = sp->def[hdw->input_val];
  75                 } else {
  76                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  77                                    "*** WARNING *** subdev msp3400 set_input:"
  78                                    " Invalid routing scheme (%u)"
  79                                    " and/or input (%d)",
  80                                    sid, hdw->input_val);
  81                         return;
  82                 }
  83                 sd->ops->audio->s_routing(sd, input,
  84                         MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
  85         }
  86 }