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/*
* Copyright (C) ST-Ericsson SA 2010
*
* License Terms: GNU General Public License, version 2
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
*/
#ifndef __LINUX_MFD_STMPE_H
#define __LINUX_MFD_STMPE_H
#include <linux/mutex.h>
struct device;
struct regulator;
enum stmpe_block {
STMPE_BLOCK_GPIO = 1 << 0,
STMPE_BLOCK_KEYPAD = 1 << 1,
STMPE_BLOCK_TOUCHSCREEN = 1 << 2,
STMPE_BLOCK_ADC = 1 << 3,
STMPE_BLOCK_PWM = 1 << 4,
STMPE_BLOCK_ROTATOR = 1 << 5,
};
enum stmpe_partnum {
STMPE610,
STMPE801,
STMPE811,
STMPE1601,
STMPE1801,
STMPE2401,
STMPE2403,
STMPE_NBR_PARTS
};
/*
* For registers whose locations differ on variants, the correct address is
* obtained by indexing stmpe->regs with one of the following.
*/
enum {
STMPE_IDX_CHIP_ID,
STMPE_IDX_ICR_LSB,
STMPE_IDX_IER_LSB,
STMPE_IDX_ISR_LSB,
STMPE_IDX_ISR_MSB,
STMPE_IDX_GPMR_LSB,
STMPE_IDX_GPSR_LSB,
STMPE_IDX_GPCR_LSB,
STMPE_IDX_GPDR_LSB,
STMPE_IDX_GPEDR_MSB,
STMPE_IDX_GPRER_LSB,
STMPE_IDX_GPFER_LSB,
STMPE_IDX_GPPUR_LSB,
STMPE_IDX_GPPDR_LSB,
STMPE_IDX_GPAFR_U_MSB,
STMPE_IDX_IEGPIOR_LSB,
STMPE_IDX_ISGPIOR_LSB,
STMPE_IDX_ISGPIOR_MSB,
STMPE_IDX_MAX,
};
struct stmpe_variant_info;
struct stmpe_client_info;
struct stmpe_platform_data;
/**
* struct stmpe - STMPE MFD structure
* @vcc: optional VCC regulator
* @vio: optional VIO regulator
* @lock: lock protecting I/O operations
* @irq_lock: IRQ bus lock
* @dev: device, mostly for dev_dbg()
* @irq_domain: IRQ domain
* @client: client - i2c or spi
* @ci: client specific information
* @partnum: part number
* @variant: the detected STMPE model number
* @regs: list of addresses of registers which are at different addresses on
* different variants. Indexed by one of STMPE_IDX_*.
* @irq: irq number for stmpe
* @num_gpios: number of gpios, differs for variants
* @ier: cache of IER registers for bus_lock
* @oldier: cache of IER registers for bus_lock
* @pdata: platform data
*/
struct stmpe {
struct regulator *vcc;
struct regulator *vio;
struct mutex lock;
struct mutex irq_lock;
struct device *dev;
struct irq_domain *domain;
void *client;
struct stmpe_client_info *ci;
enum stmpe_partnum partnum;
struct stmpe_variant_info *variant;
const u8 *regs;
int irq;
int num_gpios;
u8 ier[2];
u8 oldier[2];
struct stmpe_platform_data *pdata;
};
extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data);
extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg);
extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length,
u8 *values);
extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length,
const u8 *values);
extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val);
extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins,
enum stmpe_block block);
extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks);
extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);
#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
#endif
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