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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.
*/
#ifndef ZEPHYR_CHROME_POWER_POWER_H
#define ZEPHYR_CHROME_POWER_POWER_H
#include <devicetree.h>
#include <drivers/gpio.h>
#define POWER_SIGNAL_LIST_NODE \
DT_NODELABEL(power_signal_list)
#define SYSTEM_DT_POWER_SIGNAL_CONFIG \
DT_NODE_EXISTS(POWER_SIGNAL_LIST_NODE)
#if (SYSTEM_DT_POWER_SIGNAL_CONFIG)
#define GEN_POWER_SIGNAL_STRUCT_ENTRY_GPIO(cid) \
DT_STRING_UPPER_TOKEN( \
DT_PROP( \
cid, \
power_gpio_pin \
), \
enum_name \
)
#define GEN_POWER_SIGNAL_STRUCT_ENTRY_FLAGS(cid) \
( \
DT_GPIO_FLAGS( \
DT_PROP( \
cid, \
power_gpio_pin \
), \
gpios \
) & GPIO_ACTIVE_LOW \
? POWER_SIGNAL_ACTIVE_LOW \
: POWER_SIGNAL_ACTIVE_HIGH \
)
#define GEN_POWER_SIGNAL_STRUCT_ENTRY_NAME(cid) \
DT_PROP( \
cid, \
power_enum_name \
)
#define GEN_POWER_SIGNAL_STRUCT_ENTRY(cid) \
{ \
.gpio = GEN_POWER_SIGNAL_STRUCT_ENTRY_GPIO(cid), \
.flags = GEN_POWER_SIGNAL_STRUCT_ENTRY_FLAGS(cid), \
.name = GEN_POWER_SIGNAL_STRUCT_ENTRY_NAME(cid) \
}
#define GEN_POWER_SIGNAL_STRUCT(cid) \
[GEN_POWER_SIGNAL_ENUM_ENTRY(cid)] = \
GEN_POWER_SIGNAL_STRUCT_ENTRY(cid),
#define GEN_POWER_SIGNAL_ENUM_ENTRY(cid) \
DT_STRING_UPPER_TOKEN( \
cid, \
power_enum_name \
)
#define GEN_POWER_SIGNAL_ENUM_ENTRY_COMMA(cid) \
GEN_POWER_SIGNAL_ENUM_ENTRY(cid),
enum power_signal {
DT_FOREACH_CHILD(
POWER_SIGNAL_LIST_NODE,
GEN_POWER_SIGNAL_ENUM_ENTRY_COMMA)
POWER_SIGNAL_COUNT
};
/*
* Verify the number of required power-signals are specified in
* the DeviceTree
*/
#define POWER_SIGNALS_REQUIRED \
DT_PROP( \
POWER_SIGNAL_LIST_NODE, \
power_signals_required \
)
BUILD_ASSERT(POWER_SIGNALS_REQUIRED == POWER_SIGNAL_COUNT);
#endif /* SYSTEM_DT_POWER_SIGNAL_CONFIG */
#endif /* ZEPHYR_CHROME_POWER_POWER_H */
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