Commit aa4a0eb9 authored by Jakob Bornecrantz's avatar Jakob Bornecrantz

aux/util: Add meta proper helper

parent 53e7ff39
// Copyright 2019, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
* @file
* @brief Simplistic meta prober that wraps multiple probers.
* @author Ryan Pavlik <ryan.pavlik@collabora.com>
* @author Jakob Bornecrantz <jakob@collabora.com>
*/
#pragma once
#include <stdlib.h>
#include "xrt/xrt_prober.h"
#ifdef XRT_HAVE_OHMD
#include "ohmd/oh_interface.h"
#endif
#ifdef XRT_HAVE_HDK
#include "hdk/hdk_interface.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct xrt_prober *(*prober_creator)();
static const prober_creator DRIVERS[] = {
#ifdef XRT_HAVE_HDK
// Returns NULL if none found, so OK to go first.
hdk_create_prober,
#endif
#ifdef XRT_HAVE_OHMD
oh_create_prober,
#endif
};
#define NUM_PROBERS (ARRAY_SIZE(DRIVERS))
/*!
* An xrt_prober that contains other xrt_probers.
*/
struct u_meta_prober
{
struct xrt_prober base;
struct xrt_prober *probers[NUM_PROBERS];
};
static inline struct u_meta_prober *
u_meta_prober(struct xrt_prober *p)
{
return (struct u_meta_prober *)p;
}
static void
u_meta_prober_destroy(struct xrt_prober *p)
{
struct u_meta_prober *mp = u_meta_prober(p);
for (size_t i = 0; i < NUM_PROBERS; i++) {
if (mp->probers[i]) {
mp->probers[i]->destroy(mp->probers[i]);
mp->probers[i] = NULL;
}
}
free(p);
}
static struct xrt_device *
u_meta_prober_autoprobe(struct xrt_prober *p)
{
struct u_meta_prober *mp = u_meta_prober(p);
for (size_t i = 0; i < NUM_PROBERS; i++) {
if (mp->probers[i]) {
struct xrt_device *ret =
mp->probers[i]->lelo_dallas_autoprobe(
mp->probers[i]);
if (ret) {
return ret;
}
}
}
/* Couldn't find any prober that works. */
return NULL;
}
static struct xrt_prober *
u_meta_prober_create()
{
struct u_meta_prober *p =
(struct u_meta_prober *)calloc(1, sizeof(struct u_meta_prober));
for (size_t i = 0; i < NUM_PROBERS; i++) {
p->probers[i] = DRIVERS[i]();
}
p->base.lelo_dallas_autoprobe = u_meta_prober_autoprobe;
p->base.destroy = u_meta_prober_destroy;
return &p->base;
}
#ifdef __cplusplus
}
#endif
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