power: Rename mediatek to mt817x

BRANCH=none
BUG=b:109850749
TEST=make buildall -j

Change-Id: I69538a210f9b2198614720537faa3ee75bc0600e
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1090522
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>

1 files changed, 810 insertions, 0 deletions

diff --git a/power/mt817x.c b/power/mt817x.c
new file mode 100644
index 0000000000..37db9fe698
--- /dev/null
+++ b/power/mt817x.c
@@ -0,0 +1,810 @@
+/* Copyright 2015 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.
+ */
+
+/*
+ * MT817x SoC power sequencing module for Chrome EC
+ *
+ * This implements the following features:
+ *
+ * - Cold reset powers on the AP
+ *
+ *  When powered off:
+ *  - Press pwron turns on the AP
+ *  - Hold pwron turns on the AP, and then 8s later turns it off and leaves
+ *    it off until pwron is released and pressed again
+ *
+ *  When powered on:
+ *  - The PMIC PWRON signal is released <= 1 second after the power button is
+ *    released
+ *  - Holding pwron for 8s powers off the AP
+ *  - Pressing and releasing pwron within that 8s is ignored
+ *  - If POWER_GOOD is dropped by the AP, then we power the AP off
+ *  - If SUSPEND_L goes low, enter suspend mode.
+ *
+ */
+
+#include "battery.h"
+#include "chipset.h" /* ./common/chipset.c implements chipset functions too */
+#include "common.h"
+#include "gpio.h"
+#include "hooks.h"
+#include "keyboard_scan.h"
+#include "lid_switch.h"
+#include "power.h"
+#include "power_button.h"
+#include "power_led.h"
+#include "system.h"
+#include "task.h"
+#include "test_util.h"
+#include "util.h"
+
+#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args)
+
+#define INT_BOTH_PULL_UP	(GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH)
+
+/* masks for power signals */
+#define IN_POWER_GOOD POWER_SIGNAL_MASK(MTK_POWER_GOOD)
+#define IN_SUSPEND POWER_SIGNAL_MASK(MTK_SUSPEND_ASSERTED)
+
+/* Long power key press to force shutdown */
+#define DELAY_FORCE_SHUTDOWN  (8000 * MSEC)	/* 8 seconds */
+
+/*
+ * The power signal from SoC should be kept at least 50ms.
+ */
+#define POWER_DEBOUNCE_TIME     (50 * MSEC)
+
+/*
+ * The suspend signal from SoC should be kept at least 50ms.
+ */
+#define SUSPEND_DEBOUNCE_TIME   (50 * MSEC)
+
+/*
+ * The time to bootup the PMIC from power-off to power-on.
+ */
+#define PMIC_PWRON_PRESS_TIME   (5000 * MSEC)
+
+/*
+ * The minimum time to assert the PMIC THERM pin is 32us. However,
+ * it needs to be extended to about 50ms to let the 5V rail
+ * dissipate fully.
+ */
+#define PMIC_THERM_HOLD_TIME  (50 * MSEC)
+
+/*
+ * If the power key is pressed to turn on, then held for this long, we
+ * power off.
+ *
+ * Normal case: User releases power button and chipset_task() goes
+ *    into the inner loop, waiting for next event to occur (power button
+ *    press or POWER_GOOD == 0).
+ */
+#define DELAY_SHUTDOWN_ON_POWER_HOLD	(8000 * MSEC)	/* 8 seconds */
+
+/*
+ * The hold time for pulling down the PMIC_WARM_RESET_H pin so that
+ * the AP can entery the recovery mode (flash SPI flash from USB).
+ */
+#define PMIC_WARM_RESET_H_HOLD_TIME (4 * MSEC)
+
+/*
+ * The hold time for pulling down the SYSTEM_POWER_H pin.
+ */
+#define PMIC_COLD_RESET_L_HOLD_TIME \
+	(SUSPEND_DEBOUNCE_TIME + POWER_DEBOUNCE_TIME + (20 * MSEC))
+
+/*
+ * The first time the PMIC sees power (AC or battery) it needs 200ms (+/-12%
+ * oscillator tolerance) for the RTC startup. In addition there is a startup
+ * time of approx. 0.5msec until V2_5 regulator starts up. */
+#define PMIC_RTC_STARTUP (225 * MSEC)
+
+/* Wait for 5V power source stable */
+#define PMIC_WAIT_FOR_5V_POWER_GOOD (1 * MSEC)
+
+/*
+ * If POWER_GOOD is lost, wait for PMIC to turn off its power completely
+ * before we turn off VBAT by set_system_power(0)
+ */
+#define PMIC_POWER_OFF_DELAY (50 * MSEC)
+
+/* TODO(crosbug.com/p/25047): move to HOOK_POWER_BUTTON_CHANGE */
+/* 1 if the power button was pressed last time we checked */
+static char power_button_was_pressed;
+
+/* 1 if lid-open event has been detected */
+static char lid_opened;
+
+/* time where we will power off, if power button still held down */
+static timestamp_t power_off_deadline;
+
+/* force AP power on (used for recovery keypress) */
+static int auto_power_on;
+
+enum power_request_t {
+	POWER_REQ_NONE,
+	POWER_REQ_OFF,
+	POWER_REQ_ON,
+
+	POWER_REQ_COUNT,
+};
+
+static enum power_request_t power_request;
+
+/**
+ * Return values for check_for_power_off_event().
+ */
+enum power_off_event_t {
+	POWER_OFF_CANCEL,
+	POWER_OFF_BY_POWER_BUTTON_PRESSED,
+	POWER_OFF_BY_LONG_PRESS,
+	POWER_OFF_BY_POWER_GOOD_LOST,
+	POWER_OFF_BY_POWER_REQ,
+
+	POWER_OFF_EVENT_COUNT,
+};
+
+/**
+ * Return values for check_for_power_on_event().
+ */
+enum power_on_event_t {
+	POWER_ON_CANCEL,
+	POWER_ON_BY_IN_POWER_GOOD,
+	POWER_ON_BY_AUTO_POWER_ON,
+	POWER_ON_BY_LID_OPEN,
+	POWER_ON_BY_POWER_BUTTON_PRESSED,
+	POWER_ON_BY_POWER_REQ_NONE,
+
+	POWER_ON_EVENT_COUNT,
+};
+
+/**
+ * Parameters of mtk_backlight_override().
+ */
+enum blacklight_override_t {
+	MTK_BACKLIGHT_FORCE_OFF,
+	MTK_BACKLIGHT_CONTROL_BY_SOC,
+
+	MTK_BACKLIGHT_OVERRIDE_COUNT,
+};
+
+/* Forward declaration */
+static void chipset_turn_off_power_rails(void);
+
+/**
+ * Check the suspend signal is on after SUSPEND_DEBOUNCE_TIME to avoid transient
+ * state.
+ *
+ * @return non-zero if SUSPEND is asserted.
+ */
+static int is_suspend_asserted(void)
+{
+#ifdef BOARD_OAK
+	if ((power_get_signals() & IN_SUSPEND) &&
+	    (system_get_board_version() < 4))
+		usleep(SUSPEND_DEBOUNCE_TIME);
+#endif
+
+	return power_get_signals() & IN_SUSPEND;
+}
+
+/**
+ * Check the suspend signal is off after SUSPEND_DEBOUNCE_TIME to avoid
+ * transient state.
+ *
+ * @return non-zero if SUSPEND is deasserted.
+ */
+static int is_suspend_deasserted(void)
+{
+#ifdef BOARD_OAK
+	if (!(power_get_signals() & IN_SUSPEND) &&
+	    (system_get_board_version() < 4))
+		usleep(SUSPEND_DEBOUNCE_TIME);
+#endif
+
+	return !(power_get_signals() & IN_SUSPEND);
+}
+
+/**
+ * Check power good signal is on after POWER_DEBOUNCE_TIME to avoid transient
+ * state.
+ *
+ * @return non-zero if POWER_GOOD is asserted.
+ */
+static int is_power_good_asserted(void)
+{
+	if (!gpio_get_level(GPIO_SYSTEM_POWER_H))
+		return 0;
+#ifdef BOARD_OAK
+	else if ((power_get_signals() & IN_POWER_GOOD) &&
+		 (system_get_board_version() < 4))
+		usleep(POWER_DEBOUNCE_TIME);
+#endif
+
+	return power_get_signals() & IN_POWER_GOOD;
+}
+
+/**
+ * Check power good signal is off after POWER_DEBOUNCE_TIME to avoid transient
+ * state.
+ *
+ * @return non-zero if POWER_GOOD is deasserted.
+ */
+static int is_power_good_deasserted(void)
+{
+#ifdef BOARD_OAK
+	/*
+	 * Warm reset key from servo board lets the POWER_GOOD signal
+	 * deasserted temporarily (about 1~2 seconds) on rev4.
+	 * In order to detect this case, check the AP_RESET_L status,
+	 * ignore the transient state if reset key is pressing.
+	 */
+	if (system_get_board_version() >= 4) {
+		if (0 == gpio_get_level(GPIO_AP_RESET_L))
+			return 0;
+	} else {
+		if (!(power_get_signals() & IN_POWER_GOOD))
+			usleep(POWER_DEBOUNCE_TIME);
+	}
+#endif
+	if (0 == gpio_get_level(GPIO_AP_RESET_L))
+		return 0;
+
+	return !(power_get_signals() & IN_POWER_GOOD);
+}
+
+/**
+ * Set the system power signal.
+ *
+ * @param asserted	off (=0) or on (=1)
+ */
+static void set_system_power(int asserted)
+{
+	CPRINTS("set_system_power(%d)", asserted);
+	gpio_set_level(GPIO_SYSTEM_POWER_H, asserted);
+}
+
+/**
+ * Set the PMIC PWRON signal.
+ *
+ * Note that asserting requires holding for PMIC_PWRON_PRESS_TIME.
+ *
+ * @param asserted	Assert (=1) or deassert (=0) the signal.  This is the
+ *			logical level of the pin, not the physical level.
+ */
+static void set_pmic_pwron(int asserted)
+{
+	timestamp_t poll_deadline;
+	/* Signal is active-high */
+	CPRINTS("set_pmic_pwron(%d)", asserted);
+	/* Oak rev1 power-on sequence:
+	 *   raise GPIO_SYSTEM_POWER_H
+	 *   wait for 5V power good, timeout 1 second
+	 */
+	if (asserted) {
+		set_system_power(asserted);
+		poll_deadline = get_time();
+		poll_deadline.val += SECOND;
+		while (asserted && !gpio_get_level(GPIO_5V_POWER_GOOD) &&
+		       get_time().val < poll_deadline.val)
+			usleep(PMIC_WAIT_FOR_5V_POWER_GOOD);
+		if (!gpio_get_level(GPIO_5V_POWER_GOOD))
+			CPRINTS("5V power not ready");
+	}
+
+	gpio_set_level(GPIO_PMIC_PWRON_H, asserted);
+}
+
+/**
+ * Set the WARM RESET signal.
+ *
+ * @param asserted	off (=0) or on (=1)
+ */
+static void set_warm_reset(int asserted)
+{
+	board_set_ap_reset(asserted);
+}
+
+/**
+ * Check for some event triggering the shutdown.
+ *
+ * It can be either a long power button press or a shutdown triggered from the
+ * AP and detected by reading POWER_GOOD.
+ *
+ * @return non-zero if a shutdown should happen, 0 if not
+ */
+static int check_for_power_off_event(void)
+{
+	timestamp_t now;
+	int pressed = 0;
+
+	/*
+	 * Check for power button press.
+	 */
+	if (power_button_is_pressed()) {
+		pressed = POWER_OFF_BY_POWER_BUTTON_PRESSED;
+	} else if (power_request == POWER_REQ_OFF) {
+		power_request = POWER_REQ_NONE;
+		/* return non-zero for shudown down */
+		return POWER_OFF_BY_POWER_REQ;
+	}
+
+	now = get_time();
+	if (pressed) {
+		if (!power_button_was_pressed) {
+			power_off_deadline.val = now.val + DELAY_FORCE_SHUTDOWN;
+			CPRINTS("power waiting for long press %u",
+				power_off_deadline.le.lo);
+			/* Ensure we will wake up to check the power key */
+			timer_arm(power_off_deadline, TASK_ID_CHIPSET);
+		} else if (timestamp_expired(power_off_deadline, &now)) {
+			power_off_deadline.val = 0;
+			CPRINTS("power off after long press now=%u, %u",
+				now.le.lo, power_off_deadline.le.lo);
+			return POWER_OFF_BY_LONG_PRESS;
+		}
+	} else if (power_button_was_pressed) {
+		CPRINTS("power off cancel");
+		timer_cancel(TASK_ID_CHIPSET);
+	}
+
+	power_button_was_pressed = pressed;
+
+	/* POWER_GOOD released by AP : shutdown immediate */
+	if (is_power_good_deasserted()) {
+		/*
+		 * Cancel long press timer if power is lost and the power button
+		 * still press, otherwise EC will crash.
+		 */
+		if (power_button_was_pressed)
+			timer_cancel(TASK_ID_CHIPSET);
+
+		CPRINTS("POWER_GOOD is lost");
+		return POWER_OFF_BY_POWER_GOOD_LOST;
+	}
+
+	return POWER_OFF_CANCEL;
+}
+
+/**
+ * Set the LCD backlight enable pin and override the signal from SoC.
+ *
+ * @param asserted	MTK_BACKLIGHT_FORCE_OFF, force off the panel backlight
+ *			MTK_BACKLIGHT_CONTROL_BY_SOC, leave the control to SOC
+ */
+static void mtk_backlight_override(enum blacklight_override_t asserted)
+{
+	/* Signal is active-low */
+	gpio_set_level(GPIO_EC_BL_OVERRIDE, !asserted);
+}
+
+static void mtk_lid_event(void)
+{
+	enum blacklight_override_t bl_override;
+
+	/* Override the panel backlight enable signal from SoC,
+	 * force the backlight off on lid close.
+	 */
+	bl_override = lid_is_open() ?
+		MTK_BACKLIGHT_CONTROL_BY_SOC :
+		MTK_BACKLIGHT_FORCE_OFF;
+	mtk_backlight_override(bl_override);
+
+	/* Power task only cares about lid-open events */
+	if (!lid_is_open())
+		return;
+
+	lid_opened = 1;
+	task_wake(TASK_ID_CHIPSET);
+}
+DECLARE_HOOK(HOOK_LID_CHANGE, mtk_lid_event, HOOK_PRIO_DEFAULT);
+
+enum power_state power_chipset_init(void)
+{
+	int init_power_state;
+	uint32_t reset_flags = system_get_reset_flags();
+
+	/*
+	 * Force the AP shutdown unless we are doing SYSJUMP. Otherwise,
+	 * the AP could stay in strange state.
+	 */
+	if (!(reset_flags & RESET_FLAG_SYSJUMP)) {
+		CPRINTS("not sysjump; forcing AP shutdown");
+		chipset_turn_off_power_rails();
+
+		/*
+		 * The warm reset triggers AP into the recovery mode (
+		 * flash SPI from USB).
+		 */
+		chipset_reset();
+
+		init_power_state = POWER_G3;
+	} else {
+		/* In the SYSJUMP case, we check if the AP is on */
+		if (is_power_good_asserted()) {
+			CPRINTS("SOC ON");
+			/*
+			 * Check and release PMIC power button signal,
+			 * if it's deferred callback function is not triggered
+			 * in RO before SYSJUMP.
+			 */
+			if (gpio_get_level(GPIO_PMIC_PWRON_H))
+				set_pmic_pwron(0);
+
+			init_power_state = POWER_S0;
+			if (is_suspend_asserted())
+				enable_sleep(SLEEP_MASK_AP_RUN);
+			else
+				disable_sleep(SLEEP_MASK_AP_RUN);
+		} else {
+			CPRINTS("SOC OFF");
+			init_power_state = POWER_G3;
+			enable_sleep(SLEEP_MASK_AP_RUN);
+		}
+	}
+
+	/* Leave power off only if requested by reset flags */
+	if (!(reset_flags & RESET_FLAG_AP_OFF) &&
+	    !(reset_flags & RESET_FLAG_SYSJUMP)) {
+		CPRINTS("reset_flag 0x%x", reset_flags);
+		auto_power_on = 1;
+	}
+
+	/*
+	 * Some batteries use clock stretching feature, which requires
+	 * more time to be stable. See http://crosbug.com/p/28289
+	 */
+	battery_wait_for_stable();
+
+	return init_power_state;
+}
+
+/*****************************************************************************/
+/* Chipset interface */
+
+static void chipset_turn_off_power_rails(void)
+{
+	/* Release the power on pin, if it was asserted */
+	set_pmic_pwron(0);
+
+	/* system power off */
+	usleep(PMIC_POWER_OFF_DELAY);
+	set_system_power(0);
+}
+
+void chipset_force_shutdown(void)
+{
+	chipset_turn_off_power_rails();
+
+	/* clean-up internal variable */
+	power_request = POWER_REQ_NONE;
+}
+
+/*****************************************************************************/
+
+/**
+ * Power off the AP
+ */
+static void power_off(void)
+{
+	/* Check the power off status */
+	if (!gpio_get_level(GPIO_SYSTEM_POWER_H))
+		return;
+
+	/* Call hooks before we drop power rails */
+	hook_notify(HOOK_CHIPSET_SHUTDOWN);
+	/* switch off all rails */
+	chipset_turn_off_power_rails();
+
+	/* Change SUSPEND_L pin to high-Z to reduce power draw. */
+	gpio_set_flags(power_signal_list[MTK_SUSPEND_ASSERTED].gpio,
+		       GPIO_INPUT);
+
+	/* Change EC_INT to low */
+	gpio_set_level(GPIO_EC_INT_L, 0);
+
+	lid_opened = 0;
+	enable_sleep(SLEEP_MASK_AP_RUN);
+#ifdef HAS_TASK_POWERLED
+	powerled_set_state(POWERLED_STATE_OFF);
+#endif
+	CPRINTS("power shutdown complete");
+}
+
+/**
+ * Check if there has been a power-on event
+ *
+ * This checks all power-on event signals and returns non-zero if any have been
+ * triggered (with debounce taken into account).
+ *
+ * @return non-zero if there has been a power-on event, 0 if not.
+ */
+static int check_for_power_on_event(void)
+{
+	int ap_off_flag;
+
+	ap_off_flag = system_get_reset_flags() & RESET_FLAG_AP_OFF;
+	system_clear_reset_flags(RESET_FLAG_AP_OFF);
+	/* check if system is already ON */
+	if (is_power_good_asserted()) {
+		if (ap_off_flag) {
+			CPRINTS("system is on, but RESET_FLAG_AP_OFF is on");
+			return POWER_ON_CANCEL;
+		} else {
+			CPRINTS("system is on, thus clear " "auto_power_on");
+			/* no need to arrange another power on */
+			auto_power_on = 0;
+			return POWER_ON_BY_IN_POWER_GOOD;
+		}
+	} else {
+		if (ap_off_flag) {
+			CPRINTS("RESET_FLAG_AP_OFF is on");
+			power_off();
+			return POWER_ON_CANCEL;
+		}
+
+		CPRINTS("POWER_GOOD is not asserted");
+	}
+
+	/* power on requested at EC startup for recovery */
+	if (auto_power_on) {
+		auto_power_on = 0;
+		return POWER_ON_BY_AUTO_POWER_ON;
+	}
+
+	/* Check lid open */
+	if (lid_opened) {
+		lid_opened = 0;
+		return POWER_ON_BY_LID_OPEN;
+	}
+
+	/* check for power button press */
+	if (power_button_is_pressed())
+		return POWER_ON_BY_POWER_BUTTON_PRESSED;
+
+	if (power_request == POWER_REQ_ON) {
+		power_request = POWER_REQ_NONE;
+		return POWER_ON_BY_POWER_REQ_NONE;
+	}
+
+	return POWER_OFF_CANCEL;
+}
+
+void release_pmic_pwron_deferred(void)
+{
+	/* Release PMIC power button */
+	set_pmic_pwron(0);
+}
+DECLARE_DEFERRED(release_pmic_pwron_deferred);
+
+/**
+ * Power on the AP
+ */
+static void power_on(void)
+{
+	uint64_t t;
+
+	/* Set pull-up and enable interrupt */
+	gpio_set_flags(power_signal_list[MTK_SUSPEND_ASSERTED].gpio,
+		       GPIO_INPUT | GPIO_PULL_UP | GPIO_INT_BOTH);
+
+	/* Make sure we de-assert and GPIO_PMIC_WARM_RESET_H pin. */
+	set_warm_reset(0);
+
+	/*
+	 * Before we push PMIC power button, wait for the PMI RTC ready, which
+	 * takes PMIC_RTC_STARTUP from the AC/battery is plugged in.
+	 */
+	t = get_time().val;
+	if (t < PMIC_RTC_STARTUP) {
+		uint32_t wait = PMIC_RTC_STARTUP - t;
+
+		CPRINTS("wait for %dms for PMIC RTC start-up", wait / MSEC);
+		usleep(wait);
+	}
+
+	/*
+	 * When power_on() is called, we are at S5S3. Initialize components
+	 * to ready state before AP is up.
+	 */
+	hook_notify(HOOK_CHIPSET_PRE_INIT);
+
+	/* Push the power button */
+	set_pmic_pwron(1);
+	hook_call_deferred(&release_pmic_pwron_deferred_data,
+			   PMIC_PWRON_PRESS_TIME);
+
+	/* enable interrupt */
+	gpio_set_flags(GPIO_SUSPEND_L, INT_BOTH_PULL_UP);
+
+#ifdef BOARD_OAK
+	if (system_get_board_version() <= 3)
+		gpio_set_flags(GPIO_EC_INT_L, GPIO_OUTPUT | GPIO_OUT_HIGH);
+	else
+		gpio_set_flags(GPIO_EC_INT_L, GPIO_ODR_HIGH);
+#else
+	gpio_set_flags(GPIO_EC_INT_L, GPIO_ODR_HIGH);
+#endif
+
+	disable_sleep(SLEEP_MASK_AP_RUN);
+#ifdef HAS_TASK_POWERLED
+	powerled_set_state(POWERLED_STATE_ON);
+#endif
+	/* Call hooks now that AP is running */
+	hook_notify(HOOK_CHIPSET_STARTUP);
+
+	CPRINTS("AP running ...");
+}
+
+void chipset_reset(void)
+{
+	CPRINTS("EC triggered warm reboot");
+	set_warm_reset(1);
+	usleep(PMIC_WARM_RESET_H_HOLD_TIME);
+	/* deassert the reset signals */
+	set_warm_reset(0);
+}
+
+enum power_state power_handle_state(enum power_state state)
+{
+	int value;
+	static int boot_from_g3;
+
+	switch (state) {
+	case POWER_G3:
+		boot_from_g3 = check_for_power_on_event();
+		if (boot_from_g3)
+			return POWER_G3S5;
+		break;
+
+	case POWER_G3S5:
+		return POWER_S5;
+
+	case POWER_S5:
+		if (boot_from_g3) {
+			value = boot_from_g3;
+			boot_from_g3 = 0;
+		} else {
+			value = check_for_power_on_event();
+		}
+
+		if (value) {
+			CPRINTS("power on %d", value);
+			return POWER_S5S3;
+		}
+		return state;
+
+	case POWER_S5S3:
+		power_on();
+		if (power_wait_signals(IN_POWER_GOOD) == EC_SUCCESS) {
+			CPRINTS("POWER_GOOD seen");
+			power_button_was_pressed = 0;
+			return POWER_S3;
+		} else {
+			CPRINTS("POWER_GOOD not seen in time");
+		}
+		set_pmic_pwron(0);
+		return POWER_S5;
+
+	case POWER_S3:
+		if (is_power_good_deasserted()) {
+			power_off();
+			return POWER_S3S5;
+		} else if (is_suspend_deasserted())
+			return POWER_S3S0;
+		return state;
+
+	case POWER_S3S0:
+		disable_sleep(SLEEP_MASK_AP_RUN);
+#ifdef HAS_TASK_POWERLED
+		powerled_set_state(POWERLED_STATE_ON);
+#endif
+		hook_notify(HOOK_CHIPSET_RESUME);
+		return POWER_S0;
+
+	case POWER_S0:
+		value = check_for_power_off_event();
+		if (value) {
+			CPRINTS("power off %d", value);
+			power_off();
+			return POWER_S0S3;
+		} else if (is_suspend_asserted())
+			return POWER_S0S3;
+		return state;
+
+	case POWER_S0S3:
+#ifdef HAS_TASK_POWERLED
+		if (lid_is_open())
+			powerled_set_state(POWERLED_STATE_SUSPEND);
+		else
+			powerled_set_state(POWERLED_STATE_OFF);
+#endif
+		/*
+		 * if the power button is pressing, we need cancel the long
+		 * press timer, otherwise EC will crash.
+		 */
+		if (power_button_was_pressed)
+			timer_cancel(TASK_ID_CHIPSET);
+
+		/* Call hooks here since we don't know it prior to AP suspend */
+		hook_notify(HOOK_CHIPSET_SUSPEND);
+		enable_sleep(SLEEP_MASK_AP_RUN);
+		return POWER_S3;
+
+	case POWER_S3S5:
+		power_button_wait_for_release(-1);
+		power_button_was_pressed = 0;
+		return POWER_S5;
+
+	case POWER_S5G3:
+		return POWER_G3;
+	}
+
+	return state;
+}
+
+static void powerbtn_mtk_changed(void)
+{
+	task_wake(TASK_ID_CHIPSET);
+}
+DECLARE_HOOK(HOOK_POWER_BUTTON_CHANGE, powerbtn_mtk_changed, HOOK_PRIO_DEFAULT);
+
+/*****************************************************************************/
+/* Console debug command */
+
+static const char *power_req_name[POWER_REQ_COUNT] = {
+	"none",
+	"off",
+	"on",
+};
+
+/* Power states that we can report */
+enum power_state_t {
+	PSTATE_UNKNOWN,
+	PSTATE_OFF,
+	PSTATE_SUSPEND,
+	PSTATE_ON,
+
+	PSTATE_COUNT,
+};
+
+static const char * const state_name[] = {
+	"unknown",
+	"off",
+	"suspend",
+	"on",
+};
+
+static int command_power(int argc, char **argv)
+{
+	int v;
+
+	if (argc < 2) {
+		enum power_state_t state;
+
+		state = PSTATE_UNKNOWN;
+		if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
+			state = PSTATE_OFF;
+		if (chipset_in_state(CHIPSET_STATE_SUSPEND))
+			state = PSTATE_SUSPEND;
+		if (chipset_in_state(CHIPSET_STATE_ON))
+			state = PSTATE_ON;
+		ccprintf("%s\n", state_name[state]);
+
+		return EC_SUCCESS;
+	}
+
+	if (!parse_bool(argv[1], &v))
+		return EC_ERROR_PARAM1;
+
+	power_request = v ? POWER_REQ_ON : POWER_REQ_OFF;
+	ccprintf("Requesting power %s\n", power_req_name[power_request]);
+	task_wake(TASK_ID_CHIPSET);
+
+	return EC_SUCCESS;
+}
+DECLARE_CONSOLE_COMMAND(power, command_power,
+			"on/off",
+			"Turn AP power on/off");