kernel/drivers/media/usb/pvrusb2/pvrusb2-cs53l32a.c

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2024-07-22 17:22:30 +08:00
// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
*/
/*
This source file is specifically designed to interface with the
v4l-dvb cs53l32a module.
*/
#include "pvrusb2-cs53l32a.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/errno.h>
struct routing_scheme {
const int *def;
unsigned int cnt;
};
static const int routing_scheme1[] = {
[PVR2_CVAL_INPUT_TV] = 2, /* 1 or 2 seems to work here */
[PVR2_CVAL_INPUT_RADIO] = 2,
[PVR2_CVAL_INPUT_COMPOSITE] = 0,
[PVR2_CVAL_INPUT_SVIDEO] = 0,
};
static const struct routing_scheme routing_def1 = {
.def = routing_scheme1,
.cnt = ARRAY_SIZE(routing_scheme1),
};
static const struct routing_scheme *routing_schemes[] = {
[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
};
void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
{
if (hdw->input_dirty || hdw->force_dirty) {
const struct routing_scheme *sp;
unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
u32 input;
pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
hdw->input_val);
sp = (sid < ARRAY_SIZE(routing_schemes)) ?
routing_schemes[sid] : NULL;
if ((sp == NULL) ||
(hdw->input_val < 0) ||
(hdw->input_val >= sp->cnt)) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"*** WARNING *** subdev v4l2 set_input: Invalid routing scheme (%u) and/or input (%d)",
sid, hdw->input_val);
return;
}
input = sp->def[hdw->input_val];
sd->ops->audio->s_routing(sd, input, 0, 0);
}
}