/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
/*
 * Qualcomm PMIC PM8xxx Battery Alarm driver
 *
 */
#ifndef __MFD_PM8XXX_BATT_ALARM_H__
#define __MFD_PM8XXX_BATT_ALARM_H__

#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/notifier.h>

#define PM8XXX_BATT_ALARM_DEV_NAME	"pm8xxx-batt-alarm"

/**
 * enum pm8xxx_batt_alarm_core_data - PMIC core specific core passed into the
 *	batter alarm driver as platform data
 * @irq_name:
 * @reg_addr_batt_alarm_threshold:	PMIC threshold register address
 * @reg_addr_batt_alarm_ctrl1:		PMIC control 1 register address
 * @reg_addr_batt_alarm_ctrl2:		PMIC control 2 register address
 * @reg_addr_batt_alarm_pwm_ctrl:	PMIC PWM control register address
 */
struct pm8xxx_batt_alarm_core_data {
	char	*irq_name;
	u16	reg_addr_threshold;
	u16	reg_addr_ctrl1;
	u16	reg_addr_ctrl2;
	u16	reg_addr_pwm_ctrl;
};

/**
 * enum pm8xxx_batt_alarm_comparator - battery alarm comparator ID values
 */
enum pm8xxx_batt_alarm_comparator {
	PM8XXX_BATT_ALARM_LOWER_COMPARATOR,
	PM8XXX_BATT_ALARM_UPPER_COMPARATOR,
};

/**
 * enum pm8xxx_batt_alarm_hold_time - hold time required for out of range
 *	battery voltage needed to trigger a status change.  Enum names denote
 *	hold time in milliseconds.
 */
enum pm8xxx_batt_alarm_hold_time {
	PM8XXX_BATT_ALARM_HOLD_TIME_0p125_MS = 0,
	PM8XXX_BATT_ALARM_HOLD_TIME_0p25_MS,
	PM8XXX_BATT_ALARM_HOLD_TIME_0p5_MS,
	PM8XXX_BATT_ALARM_HOLD_TIME_1_MS,
	PM8XXX_BATT_ALARM_HOLD_TIME_2_MS,
	PM8XXX_BATT_ALARM_HOLD_TIME_4_MS,
	PM8XXX_BATT_ALARM_HOLD_TIME_8_MS,
	PM8XXX_BATT_ALARM_HOLD_TIME_16_MS,
};

/*
 * Bits that are set in the return value of pm8xxx_batt_alarm_status_read
 * to indicate crossing of the upper or lower threshold.
 */
#define PM8XXX_BATT_ALARM_STATUS_BELOW_LOWER	BIT(0)
#define PM8XXX_BATT_ALARM_STATUS_ABOVE_UPPER	BIT(1)


static inline int
pm8xxx_batt_alarm_enable(enum pm8xxx_batt_alarm_comparator comparator)
{ return -ENODEV; }

static inline int
pm8xxx_batt_alarm_disable(enum pm8xxx_batt_alarm_comparator comparator)
{ return -ENODEV; }

static inline int
pm8xxx_batt_alarm_threshold_set(enum pm8xxx_batt_alarm_comparator comparator,
				int threshold_mV)
{ return -ENODEV; }

static inline int pm8xxx_batt_alarm_status_read(void)
{ return -ENODEV; }

static inline int pm8xxx_batt_alarm_register_notifier(struct notifier_block *nb)
{ return -ENODEV; }

static inline int
pm8xxx_batt_alarm_unregister_notifier(struct notifier_block *nb)
{ return -ENODEV; }

static inline int
pm8xxx_batt_alarm_hold_time_set(enum pm8xxx_batt_alarm_hold_time hold_time)
{ return -ENODEV; }

static inline int
pm8xxx_batt_alarm_pwm_rate_set(int use_pwm, int clock_scaler, int clock_divider)
{ return -ENODEV; }



#endif /* __MFD_PM8XXX_BATT_ALARM_H__ */