usb/pvrusb2/pvrusb2-wm8775.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  *
0004  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
0005  *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
0006  */
0007
0008 /*
0009
0010    This source file is specifically designed to interface with the
0011    wm8775.
0012
0013 */
0014
0015 #include "pvrusb2-wm8775.h"
0016
0017
0018 #include "pvrusb2-hdw-internal.h"
0019 #include "pvrusb2-debug.h"
0020 #include <linux/videodev2.h>
0021 #include <media/v4l2-common.h>
0022 #include <linux/errno.h>
0023
0024 void pvr2_wm8775_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
0025 {
0026     if (hdw->input_dirty || hdw->force_dirty) {
0027         u32 input;
0028
0029         switch (hdw->input_val) {
0030         case PVR2_CVAL_INPUT_RADIO:
0031             input = 1;
0032             break;
0033         default:
0034             /* All other cases just use the second input */
0035             input = 2;
0036             break;
0037         }
0038         pvr2_trace(PVR2_TRACE_CHIPS, "subdev wm8775 set_input(val=%d route=0x%x)",
0039                hdw->input_val, input);
0040
0041         sd->ops->audio->s_routing(sd, input, 0, 0);
0042     }
0043 }