LXR linux/drivers/media/usb/pvrusb2/pvrusb2-wm8775.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *
   4 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
   6 */
   7
   8/*
   9
  10   This source file is specifically designed to interface with the
  11   wm8775.
  12
  13*/
  14
  15#include "pvrusb2-wm8775.h"
  16
  17
  18#include "pvrusb2-hdw-internal.h"
  19#include "pvrusb2-debug.h"
  20#include <linux/videodev2.h>
  21#include <media/v4l2-common.h>
  22#include <linux/errno.h>
  23
  24void pvr2_wm8775_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  25{
  26        if (hdw->input_dirty || hdw->force_dirty) {
  27                u32 input;
  28
  29                switch (hdw->input_val) {
  30                case PVR2_CVAL_INPUT_RADIO:
  31                        input = 1;
  32                        break;
  33                default:
  34                        /* All other cases just use the second input */
  35                        input = 2;
  36                        break;
  37                }
  38                pvr2_trace(PVR2_TRACE_CHIPS, "subdev wm8775 set_input(val=%d route=0x%x)",
  39                           hdw->input_val, input);
  40
  41                sd->ops->audio->s_routing(sd, input, 0, 0);
  42        }
  43}
  44