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-rw-r--r--include/linux/power/bq2415x_charger.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/include/linux/power/bq2415x_charger.h b/include/linux/power/bq2415x_charger.h
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+++ b/include/linux/power/bq2415x_charger.h
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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