usb/pvrusb2/pvrusb2-audio.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 #include "pvrusb2-audio.h"
0009 #include "pvrusb2-hdw-internal.h"
0010 #include "pvrusb2-debug.h"
0011 #include <linux/videodev2.h>
0012 #include <media/drv-intf/msp3400.h>
0013 #include <media/v4l2-common.h>
0014
0015
0016 struct routing_scheme {
0017     const int *def;
0018     unsigned int cnt;
0019 };
0020
0021 static const int routing_scheme0[] = {
0022     [PVR2_CVAL_INPUT_TV]        = MSP_INPUT_DEFAULT,
0023     [PVR2_CVAL_INPUT_RADIO]     = MSP_INPUT(MSP_IN_SCART2,
0024                         MSP_IN_TUNER1,
0025                         MSP_DSP_IN_SCART,
0026                         MSP_DSP_IN_SCART),
0027     [PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
0028                         MSP_IN_TUNER1,
0029                         MSP_DSP_IN_SCART,
0030                         MSP_DSP_IN_SCART),
0031     [PVR2_CVAL_INPUT_SVIDEO]    = MSP_INPUT(MSP_IN_SCART1,
0032                         MSP_IN_TUNER1,
0033                         MSP_DSP_IN_SCART,
0034                         MSP_DSP_IN_SCART),
0035 };
0036
0037 static const struct routing_scheme routing_def0 = {
0038     .def = routing_scheme0,
0039     .cnt = ARRAY_SIZE(routing_scheme0),
0040 };
0041
0042 static const struct routing_scheme *routing_schemes[] = {
0043     [PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
0044 };
0045
0046 void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
0047 {
0048     if (hdw->input_dirty || hdw->force_dirty) {
0049         const struct routing_scheme *sp;
0050         unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
0051         u32 input;
0052
0053         pvr2_trace(PVR2_TRACE_CHIPS, "subdev msp3400 v4l2 set_stereo");
0054         sp = (sid < ARRAY_SIZE(routing_schemes)) ?
0055             routing_schemes[sid] : NULL;
0056
0057         if ((sp != NULL) &&
0058             (hdw->input_val >= 0) &&
0059             (hdw->input_val < sp->cnt)) {
0060             input = sp->def[hdw->input_val];
0061         } else {
0062             pvr2_trace(PVR2_TRACE_ERROR_LEGS,
0063                    "*** WARNING *** subdev msp3400 set_input: Invalid routing scheme (%u) and/or input (%d)",
0064                    sid, hdw->input_val);
0065             return;
0066         }
0067         sd->ops->audio->s_routing(sd, input,
0068             MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0);
0069     }
0070 }