提交 14fa5691 编写于 作者: L Linus Walleij 提交者: Samuel Ortiz

mfd: add U300 AB3100 core support

This adds a core driver for the AB3100 mixed-signal circuit
found in the ST-Ericsson U300 series platforms. This driver
is a singleton proxy for all accesses to the AB3100
sub-drivers which will be merged on top of this one, RTC,
regulators, battery and system power control, vibrator,
LEDs, and an ALSA codec.
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Reviewed-by: NMike Rapoport <mike@compulab.co.il>
Reviewed-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
上级 516eca27
...@@ -241,6 +241,20 @@ config PCF50633_GPIO ...@@ -241,6 +241,20 @@ config PCF50633_GPIO
Say yes here if you want to include support GPIO for pins on Say yes here if you want to include support GPIO for pins on
the PCF50633 chip. the PCF50633 chip.
config AB3100_CORE
tristate "ST-Ericsson AB3100 Mixed Signal Circuit core functions"
depends on I2C
default y if ARCH_U300
help
Select this to enable the AB3100 Mixed Signal IC core
functionality. This connects to a AB3100 on the I2C bus
and expose a number of symbols needed for dependent devices
to read and write registers and subscribe to events from
this multi-functional IC. This is needed to use other features
of the AB3100 such as battery-backed RTC, charging control,
LEDs, vibrator, system power and temperature, power management
and ALSA sound.
endmenu endmenu
menu "Multimedia Capabilities Port drivers" menu "Multimedia Capabilities Port drivers"
......
...@@ -40,4 +40,5 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o ...@@ -40,4 +40,5 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o
obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o
obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
\ No newline at end of file obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
此差异已折叠。
/*
* Copyright (C) 2007-2009 ST-Ericsson AB
* License terms: GNU General Public License (GPL) version 2
* AB3100 core access functions
* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
#include <linux/device.h>
#ifndef MFD_AB3100_H
#define MFD_AB3100_H
#define ABUNKNOWN 0
#define AB3000 1
#define AB3100 2
/*
* AB3100, EVENTA1, A2 and A3 event register flags
* these are catenated into a single 32-bit flag in the code
* for event notification broadcasts.
*/
#define AB3100_EVENTA1_ONSWA (0x01<<16)
#define AB3100_EVENTA1_ONSWB (0x02<<16)
#define AB3100_EVENTA1_ONSWC (0x04<<16)
#define AB3100_EVENTA1_DCIO (0x08<<16)
#define AB3100_EVENTA1_OVER_TEMP (0x10<<16)
#define AB3100_EVENTA1_SIM_OFF (0x20<<16)
#define AB3100_EVENTA1_VBUS (0x40<<16)
#define AB3100_EVENTA1_VSET_USB (0x80<<16)
#define AB3100_EVENTA2_READY_TX (0x01<<8)
#define AB3100_EVENTA2_READY_RX (0x02<<8)
#define AB3100_EVENTA2_OVERRUN_ERROR (0x04<<8)
#define AB3100_EVENTA2_FRAMING_ERROR (0x08<<8)
#define AB3100_EVENTA2_CHARG_OVERCURRENT (0x10<<8)
#define AB3100_EVENTA2_MIDR (0x20<<8)
#define AB3100_EVENTA2_BATTERY_REM (0x40<<8)
#define AB3100_EVENTA2_ALARM (0x80<<8)
#define AB3100_EVENTA3_ADC_TRIG5 (0x01)
#define AB3100_EVENTA3_ADC_TRIG4 (0x02)
#define AB3100_EVENTA3_ADC_TRIG3 (0x04)
#define AB3100_EVENTA3_ADC_TRIG2 (0x08)
#define AB3100_EVENTA3_ADC_TRIGVBAT (0x10)
#define AB3100_EVENTA3_ADC_TRIGVTX (0x20)
#define AB3100_EVENTA3_ADC_TRIG1 (0x40)
#define AB3100_EVENTA3_ADC_TRIG0 (0x80)
/* AB3100, STR register flags */
#define AB3100_STR_ONSWA (0x01)
#define AB3100_STR_ONSWB (0x02)
#define AB3100_STR_ONSWC (0x04)
#define AB3100_STR_DCIO (0x08)
#define AB3100_STR_BOOT_MODE (0x10)
#define AB3100_STR_SIM_OFF (0x20)
#define AB3100_STR_BATT_REMOVAL (0x40)
#define AB3100_STR_VBUS (0x80)
/**
* struct ab3100
* @access_mutex: lock out concurrent accesses to the AB3100 registers
* @dev: pointer to the containing device
* @i2c_client: I2C client for this chip
* @testreg_client: secondary client for test registers
* @chip_name: name of this chip variant
* @chip_id: 8 bit chip ID for this chip variant
* @work: an event handling worker
* @event_subscribers: event subscribers are listed here
* @startup_events: a copy of the first reading of the event registers
* @startup_events_read: whether the first events have been read
*
* This struct is PRIVATE and devices using it should NOT
* access ANY fields. It is used as a token for calling the
* AB3100 functions.
*/
struct ab3100 {
struct mutex access_mutex;
struct device *dev;
struct i2c_client *i2c_client;
struct i2c_client *testreg_client;
char chip_name[32];
u8 chip_id;
struct work_struct work;
struct blocking_notifier_head event_subscribers;
u32 startup_events;
bool startup_events_read;
};
int ab3100_set_register(struct ab3100 *ab3100, u8 reg, u8 regval);
int ab3100_get_register(struct ab3100 *ab3100, u8 reg, u8 *regval);
int ab3100_get_register_page(struct ab3100 *ab3100,
u8 first_reg, u8 *regvals, u8 numregs);
int ab3100_mask_and_set_register(struct ab3100 *ab3100,
u8 reg, u8 andmask, u8 ormask);
u8 ab3100_get_chip_type(struct ab3100 *ab3100);
int ab3100_event_register(struct ab3100 *ab3100,
struct notifier_block *nb);
int ab3100_event_unregister(struct ab3100 *ab3100,
struct notifier_block *nb);
int ab3100_event_registers_startup_state_get(struct ab3100 *ab3100,
u32 *fatevent);
#endif
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