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  */
  17
  18 #include "pvrusb2-audio.h"
  19 #include "pvrusb2-hdw-internal.h"
  20 #include "pvrusb2-debug.h"
  21 #include <linux/videodev2.h>
  22 #include <media/drv-intf/msp3400.h>
  23 #include <media/v4l2-common.h>
  24
  25
  26 struct routing_scheme {
  27         const int *def;
  28         unsigned int cnt;
  29 };
  30
  31 static const int routing_scheme0[] = {
  32         [PVR2_CVAL_INPUT_TV]        = MSP_INPUT_DEFAULT,
  33         [PVR2_CVAL_INPUT_RADIO]     = MSP_INPUT(MSP_IN_SCART2,
  34                                                 MSP_IN_TUNER1,
  35                                                 MSP_DSP_IN_SCART,
  36                                                 MSP_DSP_IN_SCART),
  37         [PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
  38                                                 MSP_IN_TUNER1,
  39                                                 MSP_DSP_IN_SCART,
  40                                                 MSP_DSP_IN_SCART),
  41         [PVR2_CVAL_INPUT_SVIDEO]    = MSP_INPUT(MSP_IN_SCART1,
  42                                                 MSP_IN_TUNER1,
  43                                                 MSP_DSP_IN_SCART,
  44                                                 MSP_DSP_IN_SCART),
  45 };
  46
  47 static const struct routing_scheme routing_def0 = {
  48         .def = routing_scheme0,
  49         .cnt = ARRAY_SIZE(routing_scheme0),
  50 };
  51
  52 static const struct routing_scheme *routing_schemes[] = {
  53         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
  54 };
  55
  56 void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  57 {
  58         if (hdw->input_dirty || hdw->force_dirty) {
  59                 const struct routing_scheme *sp;
  60                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  61                 u32 input;
  62
  63                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev msp3400 v4l2 set_stereo");
  64                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  65                         routing_schemes[sid] : NULL;
  66
  67                 if ((sp != NULL) &&
  68                     (hdw->input_val >= 0) &&
  69                     (hdw->input_val < sp->cnt)) {
  70                         input = sp->def[hdw->input_val];
  71                 } else {
  72                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  73                                    "*** WARNING *** subdev msp3400 set_input: Invalid routing scheme (%u) and/or input (%d)",
  74                                    sid, hdw->input_val);
  75                         return;
  76                 }
  77                 sd->ops->audio->s_routing(sd, input,
  78                         MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
  79         }
  80 }