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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <init.h>
#include <kernel.h>
#include <logging/log.h>
#include "common.h"
#ifdef __REQUIRE_ZEPHYR_GPIOS__
#undef __REQUIRE_ZEPHYR_GPIOS__
#endif
#include "ioexpander.h"
LOG_MODULE_REGISTER(ioex_shim, LOG_LEVEL_ERR);
#ifndef CONFIG_PLATFORM_EC_IOEX_CROS_DRV
/*
* If no legacy cros-ec IOEX drivers are used, we need a stub
* symbol for ioex_config[]. Set the IOEX_IS_CROS_DRV to constant 0
* which will cause all these checks to compile out.
*/
struct ioexpander_config_t ioex_config[0];
#endif
int ioex_init(int ioex)
{
if (!IS_ENABLED(CONFIG_PLATFORM_EC_IOEX_CROS_DRV))
return EC_SUCCESS;
const struct ioexpander_drv *drv = ioex_config[ioex].drv;
int rv;
if (ioex_config[ioex].flags & IOEX_FLAGS_INITIALIZED)
return EC_SUCCESS;
if (drv->init != NULL) {
rv = drv->init(ioex);
if (rv != EC_SUCCESS)
return rv;
}
ioex_config[ioex].flags |= IOEX_FLAGS_INITIALIZED;
return EC_SUCCESS;
}
#ifdef CONFIG_PLATFORM_EC_IOEX_CROS_DRV
static int ioex_init_default(const struct device *unused)
{
int ret;
int i;
ARG_UNUSED(unused);
for (i = 0; i < CONFIG_IO_EXPANDER_PORT_COUNT; i++) {
/* IO Expander has been initialized, skip re-initializing */
if (ioex_config[i].flags & (IOEX_FLAGS_INITIALIZED |
IOEX_FLAGS_DEFAULT_INIT_DISABLED))
continue;
ret = ioex_init(i);
if (ret)
LOG_ERR("Can't initialize ioex %d", i);
}
return 0;
}
SYS_INIT(ioex_init_default, POST_KERNEL, CONFIG_PLATFORM_EC_IOEX_INIT_PRIORITY);
#endif
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