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/* Copyright 2013 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.
*/
/*
* Dummy power module for Sensor HUB.
*
* This implements the following features:
* when AP_IN_SUSPEND is low, in S0, otherwise S3.
*
*/
#include "chipset.h" /* This module implements chipset functions too */
#include "common.h"
#include "console.h"
#include "gpio.h"
#include "hooks.h"
#include "power.h"
#include "task.h"
#include "util.h"
/* Console output macros */
#define CPUTS(outstr) cputs(CC_CHIPSET, outstr)
#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args)
#define IN_SUSPEND POWER_SIGNAL_MASK(ECDRIVEN_SUSPEND_ASSERTED)
enum power_state power_chipset_init(void)
{
return POWER_S3;
}
enum power_state power_handle_state(enum power_state state)
{
switch (state) {
case POWER_S3:
if (!(power_get_signals() & IN_SUSPEND)) {
hook_notify(HOOK_CHIPSET_RESUME);
return POWER_S0;
}
return state;
case POWER_S0:
if (power_get_signals() & IN_SUSPEND) {
hook_notify(HOOK_CHIPSET_SUSPEND);
return POWER_S3;
}
return state;
default:
CPRINTS("Unexpected state: $d", state);
}
return state;
}
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