133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
/*
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* Copyright (C) 2007-2009 ST-Ericsson AB
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* License terms: GNU General Public License (GPL) version 2
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* AB3100 core access functions
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* Author: Linus Walleij <linus.walleij@stericsson.com>
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*/
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#include <linux/device.h>
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#include <linux/workqueue.h>
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#include <linux/regulator/machine.h>
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#ifndef MFD_AB3100_H
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#define MFD_AB3100_H
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#define ABUNKNOWN 0
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#define AB3000 1
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#define AB3100 2
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/*
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* AB3100, EVENTA1, A2 and A3 event register flags
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* these are catenated into a single 32-bit flag in the code
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* for event notification broadcasts.
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*/
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#define AB3100_EVENTA1_ONSWA (0x01<<16)
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#define AB3100_EVENTA1_ONSWB (0x02<<16)
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#define AB3100_EVENTA1_ONSWC (0x04<<16)
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#define AB3100_EVENTA1_DCIO (0x08<<16)
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#define AB3100_EVENTA1_OVER_TEMP (0x10<<16)
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#define AB3100_EVENTA1_SIM_OFF (0x20<<16)
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#define AB3100_EVENTA1_VBUS (0x40<<16)
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#define AB3100_EVENTA1_VSET_USB (0x80<<16)
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#define AB3100_EVENTA2_READY_TX (0x01<<8)
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#define AB3100_EVENTA2_READY_RX (0x02<<8)
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#define AB3100_EVENTA2_OVERRUN_ERROR (0x04<<8)
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#define AB3100_EVENTA2_FRAMING_ERROR (0x08<<8)
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#define AB3100_EVENTA2_CHARG_OVERCURRENT (0x10<<8)
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#define AB3100_EVENTA2_MIDR (0x20<<8)
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#define AB3100_EVENTA2_BATTERY_REM (0x40<<8)
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#define AB3100_EVENTA2_ALARM (0x80<<8)
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#define AB3100_EVENTA3_ADC_TRIG5 (0x01)
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#define AB3100_EVENTA3_ADC_TRIG4 (0x02)
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#define AB3100_EVENTA3_ADC_TRIG3 (0x04)
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#define AB3100_EVENTA3_ADC_TRIG2 (0x08)
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#define AB3100_EVENTA3_ADC_TRIGVBAT (0x10)
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#define AB3100_EVENTA3_ADC_TRIGVTX (0x20)
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#define AB3100_EVENTA3_ADC_TRIG1 (0x40)
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#define AB3100_EVENTA3_ADC_TRIG0 (0x80)
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/* AB3100, STR register flags */
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#define AB3100_STR_ONSWA (0x01)
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#define AB3100_STR_ONSWB (0x02)
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#define AB3100_STR_ONSWC (0x04)
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#define AB3100_STR_DCIO (0x08)
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#define AB3100_STR_BOOT_MODE (0x10)
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#define AB3100_STR_SIM_OFF (0x20)
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#define AB3100_STR_BATT_REMOVAL (0x40)
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#define AB3100_STR_VBUS (0x80)
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/*
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* AB3100 contains 8 regulators, one external regulator controller
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* and a buck converter, further the LDO E and buck converter can
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* have separate settings if they are in sleep mode, this is
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* modeled as a separate regulator.
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*/
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#define AB3100_NUM_REGULATORS 10
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/**
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* struct ab3100
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* @access_mutex: lock out concurrent accesses to the AB3100 registers
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* @dev: pointer to the containing device
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* @i2c_client: I2C client for this chip
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* @testreg_client: secondary client for test registers
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* @chip_name: name of this chip variant
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* @chip_id: 8 bit chip ID for this chip variant
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* @work: an event handling worker
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* @event_subscribers: event subscribers are listed here
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* @startup_events: a copy of the first reading of the event registers
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* @startup_events_read: whether the first events have been read
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*
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* This struct is PRIVATE and devices using it should NOT
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* access ANY fields. It is used as a token for calling the
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* AB3100 functions.
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*/
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struct ab3100 {
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struct mutex access_mutex;
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struct device *dev;
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struct i2c_client *i2c_client;
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struct i2c_client *testreg_client;
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char chip_name[32];
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u8 chip_id;
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struct work_struct work;
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struct blocking_notifier_head event_subscribers;
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u32 startup_events;
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bool startup_events_read;
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};
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/**
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* struct ab3100_platform_data
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* Data supplied to initialize board connections to the AB3100
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* @reg_constraints: regulator constraints for target board
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* the order of these constraints are: LDO A, C, D, E,
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* F, G, H, K, EXT and BUCK.
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* @reg_initvals: initial values for the regulator registers
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* plus two sleep settings for LDO E and the BUCK converter.
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* exactly AB3100_NUM_REGULATORS+2 values must be sent in.
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* Order: LDO A, C, E, E sleep, F, G, H, K, EXT, BUCK,
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* BUCK sleep, LDO D. (LDO D need to be initialized last.)
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* @external_voltage: voltage level of the external regulator.
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*/
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struct ab3100_platform_data {
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struct regulator_init_data reg_constraints[AB3100_NUM_REGULATORS];
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u8 reg_initvals[AB3100_NUM_REGULATORS+2];
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int external_voltage;
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};
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int ab3100_set_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 regval);
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int ab3100_get_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 *regval);
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int ab3100_get_register_page_interruptible(struct ab3100 *ab3100,
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u8 first_reg, u8 *regvals, u8 numregs);
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int ab3100_mask_and_set_register_interruptible(struct ab3100 *ab3100,
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u8 reg, u8 andmask, u8 ormask);
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u8 ab3100_get_chip_type(struct ab3100 *ab3100);
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int ab3100_event_register(struct ab3100 *ab3100,
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struct notifier_block *nb);
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int ab3100_event_unregister(struct ab3100 *ab3100,
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struct notifier_block *nb);
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int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100,
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u32 *fatevent);
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#endif
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