| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * 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> |
| */ |
| |
| #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 */ |
