drivers/media/usb/pvrusb2/pvrusb2-cs53l32a.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    v4l-dvb cs53l32a module.
  12
  13 */
  14
  15 #include "pvrusb2-cs53l32a.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 struct routing_scheme {
  25         const int *def;
  26         unsigned int cnt;
  27 };
  28
  29
  30 static const int routing_scheme1[] = {
  31         [PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
  32         [PVR2_CVAL_INPUT_RADIO] = 2,
  33         [PVR2_CVAL_INPUT_COMPOSITE] = 0,
  34         [PVR2_CVAL_INPUT_SVIDEO] =  0,
  35 };
  36
  37 static const struct routing_scheme routing_def1 = {
  38         .def = routing_scheme1,
  39         .cnt = ARRAY_SIZE(routing_scheme1),
  40 };
  41
  42 static const struct routing_scheme *routing_schemes[] = {
  43         [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  44 };
  45
  46
  47 void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  48 {
  49         if (hdw->input_dirty || hdw->force_dirty) {
  50                 const struct routing_scheme *sp;
  51                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  52                 u32 input;
  53                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  54                            hdw->input_val);
  55                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  56                         routing_schemes[sid] : NULL;
  57                 if ((sp == NULL) ||
  58                     (hdw->input_val < 0) ||
  59                     (hdw->input_val >= sp->cnt)) {
  60                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  61                                    "*** WARNING *** subdev v4l2 set_input: Invalid routing scheme (%u) and/or input (%d)",
  62                                    sid, hdw->input_val);
  63                         return;
  64                 }
  65                 input = sp->def[hdw->input_val];
  66                 sd->ops->audio->s_routing(sd, input, 0, 0);
  67         }
  68 }