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mfd: Initial max8925 support

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Basic Max8925 support, which is a power management IC from Maxim
Semiconductor.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Haojian Zhuang 2010-01-08 12:29:23 +01:00 • committed by Samuel Ortiz
parent 34a4b2391e
commit d50f8f339f
5 changed files with 602 additions and 0 deletions
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119
include/linux/mfd/max8925.h Normal file
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/*
* Maxim8925 Interface
*
* Copyright (C) 2009 Marvell International Ltd.
* Haojian Zhuang <haojian.zhuang@marvell.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 __LINUX_MFD_MAX8925_H
#define __LINUX_MFD_MAX8925_H
#include <linux/interrupt.h>
/* Charger registers */
#define MAX8925_CHG_IRQ1 (0x7e)
#define MAX8925_CHG_IRQ2 (0x7f)
#define MAX8925_CHG_IRQ1_MASK (0x80)
#define MAX8925_CHG_IRQ2_MASK (0x81)
/* GPM registers */
#define MAX8925_SYSENSEL (0x00)
#define MAX8925_ON_OFF_IRQ1 (0x01)
#define MAX8925_ON_OFF_IRQ1_MASK (0x02)
#define MAX8925_ON_OFF_STAT (0x03)
#define MAX8925_ON_OFF_IRQ2 (0x0d)
#define MAX8925_ON_OFF_IRQ2_MASK (0x0e)
#define MAX8925_RESET_CNFG (0x0f)
/* Touch registers */
#define MAX8925_TSC_IRQ (0x00)
#define MAX8925_TSC_IRQ_MASK (0x01)
/* RTC registers */
#define MAX8925_RTC_STATUS (0x1a)
#define MAX8925_RTC_IRQ (0x1c)
#define MAX8925_RTC_IRQ_MASK (0x1d)
/* bit definitions */
#define CHG_IRQ1_MASK (0x07)
#define CHG_IRQ2_MASK (0xff)
#define ON_OFF_IRQ1_MASK (0xff)
#define ON_OFF_IRQ2_MASK (0x03)
#define TSC_IRQ_MASK (0x03)
#define RTC_IRQ_MASK (0x0c)
#define MAX8925_NUM_IRQ (32)
#define MAX8925_NAME_SIZE (32)
enum {
MAX8925_INVALID = 0,
MAX8925_RTC,
MAX8925_ADC,
MAX8925_GPM, /* general power management */
MAX8925_MAX,
};
#define MAX8925_IRQ_VCHG_OVP (0)
#define MAX8925_IRQ_VCHG_F (1)
#define MAX8925_IRQ_VCHG_R (2)
#define MAX8925_IRQ_VCHG_THM_OK_R (8)
#define MAX8925_IRQ_VCHG_THM_OK_F (9)
#define MAX8925_IRQ_VCHG_BATTLOW_F (10)
#define MAX8925_IRQ_VCHG_BATTLOW_R (11)
#define MAX8925_IRQ_VCHG_RST (12)
#define MAX8925_IRQ_VCHG_DONE (13)
#define MAX8925_IRQ_VCHG_TOPOFF (14)
#define MAX8925_IRQ_VCHG_TMR_FAULT (15)
#define MAX8925_IRQ_GPM_RSTIN (16)
#define MAX8925_IRQ_GPM_MPL (17)
#define MAX8925_IRQ_GPM_SW_3SEC (18)
#define MAX8925_IRQ_GPM_EXTON_F (19)
#define MAX8925_IRQ_GPM_EXTON_R (20)
#define MAX8925_IRQ_GPM_SW_1SEC (21)
#define MAX8925_IRQ_GPM_SW_F (22)
#define MAX8925_IRQ_GPM_SW_R (23)
#define MAX8925_IRQ_GPM_SYSCKEN_F (24)
#define MAX8925_IRQ_GPM_SYSCKEN_R (25)
#define MAX8925_IRQ_TSC_STICK (0)
#define MAX8925_IRQ_TSC_NSTICK (1)
struct max8925_irq {
irq_handler_t handler;
void *data;
};
struct max8925_chip {
struct device *dev;
struct mutex io_lock;
struct mutex irq_lock;
struct i2c_client *i2c;
struct max8925_irq irq[MAX8925_NUM_IRQ];
const char *name;
int chip_id;
int chip_irq;
};
struct max8925_platform_data {
int chip_id;
int chip_irq;
};
extern int max8925_reg_read(struct i2c_client *, int);
extern int max8925_reg_write(struct i2c_client *, int, unsigned char);
extern int max8925_bulk_read(struct i2c_client *, int, int, unsigned char *);
extern int max8925_bulk_write(struct i2c_client *, int, int, unsigned char *);
extern int max8925_set_bits(struct i2c_client *, int, unsigned char,
unsigned char);
extern int max8925_device_init(struct max8925_chip *,
struct max8925_platform_data *);
extern void max8925_device_exit(struct max8925_chip *);
#endif /* __LINUX_MFD_MAX8925_H */