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/* Copyright 2021 The ChromiumOS Authors
* 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 <zephyr/devicetree.h>
#include <zephyr/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)
enum power_signal {
DT_FOREACH_CHILD_SEP(POWER_SIGNAL_LIST_NODE,
GEN_POWER_SIGNAL_ENUM_ENTRY, (, )),
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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