drivers/media/usb/pvrusb2/pvrusb2-audio.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 #include "pvrusb2-audio.h"
   9 #include "pvrusb2-hdw-internal.h"
  10 #include "pvrusb2-debug.h"
  11 #include <linux/videodev2.h>
  12 #include <media/drv-intf/msp3400.h>
  13 #include <media/v4l2-common.h>
  14
  15
  16 struct routing_scheme {
  17         const int *def;
  18         unsigned int cnt;
  19 };
  20
  21 static const int routing_scheme0[] = {
  22         [PVR2_CVAL_INPUT_TV]        = MSP_INPUT_DEFAULT,
  23         [PVR2_CVAL_INPUT_RADIO]     = MSP_INPUT(MSP_IN_SCART2,
  24                                                 MSP_IN_TUNER1,
  25                                                 MSP_DSP_IN_SCART,
  26                                                 MSP_DSP_IN_SCART),
  27         [PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
  28                                                 MSP_IN_TUNER1,
  29                                                 MSP_DSP_IN_SCART,
  30                                                 MSP_DSP_IN_SCART),
  31         [PVR2_CVAL_INPUT_SVIDEO]    = MSP_INPUT(MSP_IN_SCART1,
  32                                                 MSP_IN_TUNER1,
  33                                                 MSP_DSP_IN_SCART,
  34                                                 MSP_DSP_IN_SCART),
  35 };
  36
  37 static const struct routing_scheme routing_def0 = {
  38         .def = routing_scheme0,
  39         .cnt = ARRAY_SIZE(routing_scheme0),
  40 };
  41
  42 static const struct routing_scheme *routing_schemes[] = {
  43         [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
  44 };
  45
  46 void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  47 {
  48         if (hdw->input_dirty || hdw->force_dirty) {
  49                 const struct routing_scheme *sp;
  50                 unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  51                 u32 input;
  52
  53                 pvr2_trace(PVR2_TRACE_CHIPS, "subdev msp3400 v4l2 set_stereo");
  54                 sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  55                         routing_schemes[sid] : NULL;
  56
  57                 if ((sp != NULL) &&
  58                     (hdw->input_val >= 0) &&
  59                     (hdw->input_val < sp->cnt)) {
  60                         input = sp->def[hdw->input_val];
  61                 } else {
  62                         pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  63                                    "*** WARNING *** subdev msp3400 set_input: Invalid routing scheme (%u) and/or input (%d)",
  64                                    sid, hdw->input_val);
  65                         return;
  66                 }
  67                 sd->ops->audio->s_routing(sd, input,
  68                         MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
  69         }
  70 }