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linux-next/include/linux/mfd/pcf50633/core.h

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mfd: PCF50633 core driver This patch implements the core of the PCF50633 driver. This core driver has generic register read/write functions and does interrupt management for its sub devices. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-09 08:49:01 +08:00
/*
* core.h -- Core driver for NXP PCF50633
*
* (C) 2006-2008 by Openmoko, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __LINUX_MFD_PCF50633_CORE_H
#define __LINUX_MFD_PCF50633_CORE_H
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/power_supply.h>
struct pcf50633;
#define PCF50633_NUM_REGULATORS 11
struct pcf50633_platform_data {
struct regulator_init_data reg_init_data[PCF50633_NUM_REGULATORS];
char **batteries;
int num_batteries;
pcf50633_charger: Enable periodic charging restart The battery charger state machine switches into charging mode when the battery voltage falls below 96% of a battery float voltage. But the voltage drop in Li-ion batteries is marginal(1~2 %) till about 80% of its capacity - which means, after a BATFULL, charging won't be restarted until 80%. This work_struct function restarts charging at regular intervals to make sure the battery doesn't discharge too much. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-01-27 21:53:12 +08:00
int charging_restart_interval;
pcf50633: introduces battery charging current control Implement a new sysfs attribute to allow changing MBC charging limit on the fly independently of usb current limit. It also gets set automatically every time usb current limit is changed. Limiting charging current also prevents violating USB specification in the case when the whole device is shut down and usb current limit is reset to the factory default by the pcf50633 state transition. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2009-11-05 05:24:55 +08:00
/*
* Should be set accordingly to the reference resistor used, see
* I_{ch(ref)} charger reference current in the pcf50633 User
* Manual.
*/
int charger_reference_current_ma;
mfd: PCF50633 core driver This patch implements the core of the PCF50633 driver. This core driver has generic register read/write functions and does interrupt management for its sub devices. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-09 08:49:01 +08:00
/* Callbacks */
void (*probe_done)(struct pcf50633 *);
void (*mbc_event_callback)(struct pcf50633 *, int);
void (*regulator_registered)(struct pcf50633 *, int);
void (*force_shutdown)(struct pcf50633 *);
u8 resumers[5];
};
struct pcf50633_subdev_pdata {
struct pcf50633 *pcf;
};
struct pcf50633_irq {
void (*handler) (int, void *);
void *data;
};
int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
void (*handler) (int, void *), void *data);
int pcf50633_free_irq(struct pcf50633 *pcf, int irq);
int pcf50633_irq_mask(struct pcf50633 *pcf, int irq);
int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq);
int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq);
int pcf50633_read_block(struct pcf50633 *, u8 reg,
int nr_regs, u8 *data);
int pcf50633_write_block(struct pcf50633 *pcf, u8 reg,
int nr_regs, u8 *data);
u8 pcf50633_reg_read(struct pcf50633 *, u8 reg);
int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val);
int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val);
int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 bits);
/* Interrupt registers */
#define PCF50633_REG_INT1 0x02
#define PCF50633_REG_INT2 0x03
#define PCF50633_REG_INT3 0x04
#define PCF50633_REG_INT4 0x05
#define PCF50633_REG_INT5 0x06
#define PCF50633_REG_INT1M 0x07
#define PCF50633_REG_INT2M 0x08
#define PCF50633_REG_INT3M 0x09
#define PCF50633_REG_INT4M 0x0a
#define PCF50633_REG_INT5M 0x0b
enum {
/* Chip IRQs */
PCF50633_IRQ_ADPINS,
PCF50633_IRQ_ADPREM,
PCF50633_IRQ_USBINS,
PCF50633_IRQ_USBREM,
PCF50633_IRQ_RESERVED1,
PCF50633_IRQ_RESERVED2,
PCF50633_IRQ_ALARM,
PCF50633_IRQ_SECOND,
PCF50633_IRQ_ONKEYR,
PCF50633_IRQ_ONKEYF,
PCF50633_IRQ_EXTON1R,
PCF50633_IRQ_EXTON1F,
PCF50633_IRQ_EXTON2R,
PCF50633_IRQ_EXTON2F,
PCF50633_IRQ_EXTON3R,
PCF50633_IRQ_EXTON3F,
PCF50633_IRQ_BATFULL,
PCF50633_IRQ_CHGHALT,
PCF50633_IRQ_THLIMON,
PCF50633_IRQ_THLIMOFF,
PCF50633_IRQ_USBLIMON,
PCF50633_IRQ_USBLIMOFF,
PCF50633_IRQ_ADCRDY,
PCF50633_IRQ_ONKEY1S,
PCF50633_IRQ_LOWSYS,
PCF50633_IRQ_LOWBAT,
PCF50633_IRQ_HIGHTMP,
PCF50633_IRQ_AUTOPWRFAIL,
PCF50633_IRQ_DWN1PWRFAIL,
PCF50633_IRQ_DWN2PWRFAIL,
PCF50633_IRQ_LEDPWRFAIL,
PCF50633_IRQ_LEDOVP,
PCF50633_IRQ_LDO1PWRFAIL,
PCF50633_IRQ_LDO2PWRFAIL,
PCF50633_IRQ_LDO3PWRFAIL,
PCF50633_IRQ_LDO4PWRFAIL,
PCF50633_IRQ_LDO5PWRFAIL,
PCF50633_IRQ_LDO6PWRFAIL,
PCF50633_IRQ_HCLDOPWRFAIL,
PCF50633_IRQ_HCLDOOVL,
/* Always last */
PCF50633_NUM_IRQ,
};
struct pcf50633 {
struct device *dev;
struct i2c_client *i2c_client;
struct pcf50633_platform_data *pdata;
int irq;
struct pcf50633_irq irq_handler[PCF50633_NUM_IRQ];
struct work_struct irq_work;
mfd: use a dedicated workqueue for pcf50633 irq processing Using the default kernel "events" workqueue causes problems with synchronous adc readings if initiated from some task on the same workqueue. I had a deadlock trying to use pcf50633_adc_sync_read from a power_supply class driver because the reading was initiated from the workqueue and it waited for the irq processing to complete (to get the result) and that was put on the same workqueue. Signed-off-by: Paul Fertser <fercerpav@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-07-28 04:41:15 +08:00
struct workqueue_struct *work_queue;
mfd: PCF50633 core driver This patch implements the core of the PCF50633 driver. This core driver has generic register read/write functions and does interrupt management for its sub devices. Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
2009-01-09 08:49:01 +08:00
struct mutex lock;
u8 mask_regs[5];
u8 suspend_irq_masks[5];
u8 resume_reason[5];
int is_suspended;
int onkey1s_held;
struct platform_device *rtc_pdev;
struct platform_device *mbc_pdev;
struct platform_device *adc_pdev;
struct platform_device *input_pdev;
struct platform_device *regulator_pdev[PCF50633_NUM_REGULATORS];
};
enum pcf50633_reg_int1 {
PCF50633_INT1_ADPINS = 0x01, /* Adapter inserted */
PCF50633_INT1_ADPREM = 0x02, /* Adapter removed */
PCF50633_INT1_USBINS = 0x04, /* USB inserted */
PCF50633_INT1_USBREM = 0x08, /* USB removed */
/* reserved */
PCF50633_INT1_ALARM = 0x40, /* RTC alarm time is reached */
PCF50633_INT1_SECOND = 0x80, /* RTC periodic second interrupt */
};
enum pcf50633_reg_int2 {
PCF50633_INT2_ONKEYR = 0x01, /* ONKEY rising edge */
PCF50633_INT2_ONKEYF = 0x02, /* ONKEY falling edge */
PCF50633_INT2_EXTON1R = 0x04, /* EXTON1 rising edge */
PCF50633_INT2_EXTON1F = 0x08, /* EXTON1 falling edge */
PCF50633_INT2_EXTON2R = 0x10, /* EXTON2 rising edge */
PCF50633_INT2_EXTON2F = 0x20, /* EXTON2 falling edge */
PCF50633_INT2_EXTON3R = 0x40, /* EXTON3 rising edge */
PCF50633_INT2_EXTON3F = 0x80, /* EXTON3 falling edge */
};
enum pcf50633_reg_int3 {
PCF50633_INT3_BATFULL = 0x01, /* Battery full */
PCF50633_INT3_CHGHALT = 0x02, /* Charger halt */
PCF50633_INT3_THLIMON = 0x04,
PCF50633_INT3_THLIMOFF = 0x08,
PCF50633_INT3_USBLIMON = 0x10,
PCF50633_INT3_USBLIMOFF = 0x20,
PCF50633_INT3_ADCRDY = 0x40, /* ADC result ready */
PCF50633_INT3_ONKEY1S = 0x80, /* ONKEY pressed 1 second */
};
enum pcf50633_reg_int4 {
PCF50633_INT4_LOWSYS = 0x01,
PCF50633_INT4_LOWBAT = 0x02,
PCF50633_INT4_HIGHTMP = 0x04,
PCF50633_INT4_AUTOPWRFAIL = 0x08,
PCF50633_INT4_DWN1PWRFAIL = 0x10,
PCF50633_INT4_DWN2PWRFAIL = 0x20,
PCF50633_INT4_LEDPWRFAIL = 0x40,
PCF50633_INT4_LEDOVP = 0x80,
};
enum pcf50633_reg_int5 {
PCF50633_INT5_LDO1PWRFAIL = 0x01,
PCF50633_INT5_LDO2PWRFAIL = 0x02,
PCF50633_INT5_LDO3PWRFAIL = 0x04,
PCF50633_INT5_LDO4PWRFAIL = 0x08,
PCF50633_INT5_LDO5PWRFAIL = 0x10,
PCF50633_INT5_LDO6PWRFAIL = 0x20,
PCF50633_INT5_HCLDOPWRFAIL = 0x40,
PCF50633_INT5_HCLDOOVL = 0x80,
};
/* misc. registers */
#define PCF50633_REG_OOCSHDWN 0x0c
/* LED registers */
#define PCF50633_REG_LEDOUT 0x28
#define PCF50633_REG_LEDENA 0x29
#define PCF50633_REG_LEDCTL 0x2a
#define PCF50633_REG_LEDDIM 0x2b
#endif
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