| /* |
| * 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_ */ |