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
  24 void 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 }