LXR linux/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
  24struct routing_scheme {
  25        const int *def;
  26        unsigned int cnt;
  27};
  28
  29
  30static 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
  37static const struct routing_scheme routing_def1 = {
  38        .def = routing_scheme1,
  39        .cnt = ARRAY_SIZE(routing_scheme1),
  40};
  41
  42static const struct routing_scheme *routing_schemes[] = {
  43        [PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  44};
  45
  46
  47void 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}
  69