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/*
bq2415x_charger.h - bq2415x charger driver
Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef BQ2415X_CHARGER_H
#define BQ2415X_CHARGER_H
/*
This is platform data for bq2415x chip. It contains default board voltages
and currents which can be also later configured via sysfs. If value is -1
then default chip value (specified in datasheet) will be used.
Value resistor_sense is needed for for configuring charge and termination
current. It it is less or equal to zero, configuring charge and termination
current will not be possible.
Function set_mode_hook is needed for automode (setting correct current limit
when charger is connected/disconnected or setting boost mode). When is NULL,
automode function is disabled. When is not NULL, it must have this prototype:
int (*set_mode_hook)(
void (*hook)(enum bq2415x_mode mode, void *data),
void *data)
hook is hook function (see below) and data is pointer to driver private data
bq2415x driver will call it as:
platform_data->set_mode_hook(bq2415x_hook_function, bq2415x_device);
Board/platform function set_mode_hook return non zero value when hook
function was successful registered. Platform code should call that hook
function (which get from pointer, with data) every time when charger was
connected/disconnected or require to enable boost mode. bq2415x driver then
will set correct current limit, enable/disable charger or boost mode.
Hook function has this prototype:
void hook(enum bq2415x_mode mode, void *data);
mode is bq2415x mode (charger or boost)
data is pointer to driver private data (which get from set_charger_type_hook)
When bq driver is being unloaded, it call function:
platform_data->set_mode_hook(NULL, NULL);
(hook function and driver private data are NULL)
After that board/platform code must not call driver hook function! It is
possible that pointer to hook function will not be valid and calling will
cause undefined result.
*/
/* Supported modes with maximal current limit */
enum bq2415x_mode {
BQ2415X_MODE_NONE, /* unknown or no charger (100mA) */
BQ2415X_MODE_HOST_CHARGER, /* usb host/hub charger (500mA) */
BQ2415X_MODE_DEDICATED_CHARGER, /* dedicated charger (unlimited) */
BQ2415X_MODE_BOOST, /* boost mode (charging disabled) */
};
struct bq2415x_platform_data {
int current_limit; /* mA */
int weak_battery_voltage; /* mV */
int battery_regulation_voltage; /* mV */
int charge_current; /* mA */
int termination_current; /* mA */
int resistor_sense; /* m ohm */
int (*set_mode_hook)(void (*hook)(enum bq2415x_mode mode, void *data),
void *data);
};
#endif
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