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/*
* Copyright 2012, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#ifndef __TPS65090_H_
#define __TPS65090_H_
/* I2C device address for TPS65090 PMU */
#define TPS65090_I2C_ADDR 0x48
/* TPS65090 FET control registers */
enum fet_id {
FET1_CTRL = 0x0f,
FET2_CTRL,
FET3_CTRL,
FET4_CTRL,
FET5_CTRL,
FET6_CTRL,
FET7_CTRL,
};
enum {
/* Status register fields */
TPS65090_ST1_OTC = 1 << 0,
TPS65090_ST1_OCC = 1 << 1,
TPS65090_ST1_STATE_SHIFT = 4,
TPS65090_ST1_STATE_MASK = 0xf << TPS65090_ST1_STATE_SHIFT,
};
/* FET errors */
enum {
FET_ERR_COMMS = -1, /* FET comms error */
FET_ERR_NOT_READY = -2, /* FET is not yet ready - retry */
};
/**
* Enable FET
*
* @param bus I2C bus number the TPS65090 is on
* @param fet_id FET ID, value between 1 and 7
* return 0 on success, non-0 on failure
*/
int tps65090_fet_enable(unsigned int bus, enum fet_id fet_id);
/**
* Disable FET
*
* @param bus I2C bus number the TPS65090 is on
* @param fet_id FET ID, value between 1 and 7
* @return 0 on success, non-0 on failure
*/
int tps65090_fet_disable(unsigned int bus, enum fet_id fet_id);
/**
* Is FET enabled?
*
* @param bus I2C bus number the TPS65090 is on
* @param fet_id FET ID, value between 1 and 7
* @return 1 enabled, 0 disabled, negative value on failure
*/
int tps65090_fet_is_enabled(unsigned int bus, enum fet_id fet_id);
/**
* Enable / disable the battery charger
*
* @param bus I2C bus number the TPS65090 is on
* @param enable 0 to disable charging, non-zero to enable
*/
int tps65090_set_charge_enable(unsigned int bus, int enable);
/**
* Check whether we have enabled battery charging
*
* @param bus I2C bus number the TPS65090 is on
* @return 1 if enabled, 0 if disabled
*/
int tps65090_is_charging(unsigned int bus);
/**
* Return the value of the status register
*
* @param bus I2C bus number the TPS65090 is on
* @return status register value, or -1 on error
*/
int tps65090_get_status(unsigned int bus);
#endif /* __TPS65090_H_ */
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