drivers/media/usb/pvrusb2/pvrusb2-wm8775.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    wm8775.
  22
  23 */
  24
  25 #include "pvrusb2-wm8775.h"
  26
  27
  28 #include "pvrusb2-hdw-internal.h"
  29 #include "pvrusb2-debug.h"
  30 #include <linux/videodev2.h>
  31 #include <media/v4l2-common.h>
  32 #include <linux/errno.h>
  33
  34 void pvr2_wm8775_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  35 {
  36         if (hdw->input_dirty || hdw->force_dirty) {
  37                 u32 input;
  38
  39                 switch (hdw->input_val) {
  40                 case PVR2_CVAL_INPUT_RADIO:
  41                         input = 1;
  42                         break;
  43                 default:
  44                         /* All other cases just use the second input */
  45                         input = 2;
  46                         break;
  47                 }
  48                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev wm8775 set_input(val=%d route=0x%x)",
  49                            hdw->input_val, input);
  50
  51                 sd->ops->audio->s_routing(sd, input, 0, 0);
  52         }
  53 }