Edit File: smb347-charger.h
/* * Summit Microelectronics SMB347 Battery Charger Driver * * Copyright (C) 2011, Intel Corporation * * Authors: Bruce E. Robertson <bruce.e.robertson@intel.com> * Mika Westerberg <mika.westerberg@linux.intel.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef SMB347_CHARGER_H #define SMB347_CHARGER_H #include <linux/types.h> #include <linux/power_supply.h> enum { /* use the default compensation method */ SMB347_SOFT_TEMP_COMPENSATE_DEFAULT = -1, SMB347_SOFT_TEMP_COMPENSATE_NONE, SMB347_SOFT_TEMP_COMPENSATE_CURRENT, SMB347_SOFT_TEMP_COMPENSATE_VOLTAGE, }; /* Use default factory programmed value for hard/soft temperature limit */ #define SMB347_TEMP_USE_DEFAULT -273 /* * Charging enable can be controlled by software (via i2c) by * smb347-charger driver or by EN pin (active low/high). */ enum smb347_chg_enable { SMB347_CHG_ENABLE_SW, SMB347_CHG_ENABLE_PIN_ACTIVE_LOW, SMB347_CHG_ENABLE_PIN_ACTIVE_HIGH, }; /** * struct smb347_charger_platform_data - platform data for SMB347 charger * @battery_info: Information about the battery * @max_charge_current: maximum current (in uA) the battery can be charged * @max_charge_voltage: maximum voltage (in uV) the battery can be charged * @pre_charge_current: current (in uA) to use in pre-charging phase * @termination_current: current (in uA) used to determine when the * charging cycle terminates * @pre_to_fast_voltage: voltage (in uV) treshold used for transitioning to * pre-charge to fast charge mode * @mains_current_limit: maximum input current drawn from AC/DC input (in uA) * @usb_hc_current_limit: maximum input high current (in uA) drawn from USB * input * @chip_temp_threshold: die temperature where device starts limiting charge * current [%100 - %130] (in degree C) * @soft_cold_temp_limit: soft cold temperature limit [%0 - %15] (in degree C), * granularity is 5 deg C. * @soft_hot_temp_limit: soft hot temperature limit [%40 - %55] (in degree C), * granularity is 5 deg C. * @hard_cold_temp_limit: hard cold temperature limit [%-5 - %10] (in degree C), * granularity is 5 deg C. * @hard_hot_temp_limit: hard hot temperature limit [%50 - %65] (in degree C), * granularity is 5 deg C. * @suspend_on_hard_temp_limit: suspend charging when hard limit is hit * @soft_temp_limit_compensation: compensation method when soft temperature * limit is hit * @charge_current_compensation: current (in uA) for charging compensation * current when temperature hits soft limits * @use_mains: AC/DC input can be used * @use_usb: USB input can be used * @use_usb_otg: USB OTG output can be used (not implemented yet) * @irq_gpio: GPIO number used for interrupts (%-1 if not used) * @enable_control: how charging enable/disable is controlled * (driver/pin controls) * * @use_main, @use_usb, and @use_usb_otg are means to enable/disable * hardware support for these. This is useful when we want to have for * example OTG charging controlled via OTG transceiver driver and not by * the SMB347 hardware. * * Hard and soft temperature limit values are given as described in the * device data sheet and assuming NTC beta value is %3750. Even if this is * not the case, these values should be used. They can be mapped to the * corresponding NTC beta values with the help of table %2 in the data * sheet. So for example if NTC beta is %3375 and we want to program hard * hot limit to be %53 deg C, @hard_hot_temp_limit should be set to %50. * * If zero value is given in any of the current and voltage values, the * factory programmed default will be used. For soft/hard temperature * values, pass in %SMB347_TEMP_USE_DEFAULT instead. */ struct smb347_charger_platform_data { struct power_supply_info battery_info; unsigned int max_charge_current; unsigned int max_charge_voltage; unsigned int pre_charge_current; unsigned int termination_current; unsigned int pre_to_fast_voltage; unsigned int mains_current_limit; unsigned int usb_hc_current_limit; unsigned int chip_temp_threshold; int soft_cold_temp_limit; int soft_hot_temp_limit; int hard_cold_temp_limit; int hard_hot_temp_limit; bool suspend_on_hard_temp_limit; unsigned int soft_temp_limit_compensation; unsigned int charge_current_compensation; bool use_mains; bool use_usb; bool use_usb_otg; int irq_gpio; enum smb347_chg_enable enable_control; }; #endif /* SMB347_CHARGER_H */