Add I2C driver for Summit Microelectronics SMB347 Battery Charger. (ed1a230f) · Commits · e / devices / android_kernel_sony_msm8998

drivers/power/Kconfig

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		@@ -274,4 +274,11 @@ config CHARGER_MAX8998
		Say Y to enable support for the battery charger control sysfs and
		platform data of MAX8998/LP3974 PMICs.

		config CHARGER_SMB347
		tristate "Summit Microelectronics SMB347 Battery Charger"
		depends on I2C
		help
		Say Y to include support for Summit Microelectronics SMB347
		Battery Charger.

		endif # POWER_SUPPLY

drivers/power/Makefile

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		@@ -41,3 +41,4 @@ obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
		obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o
		obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
		obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
		obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o

drivers/power/smb347-charger.c

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File added.

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include/linux/power/smb347-charger.h

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		/*
		* 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 */