LXR linux/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
  34void 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}
  54