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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Rabin Vincent <[email protected]> for ST-Ericsson
*/
#ifndef __LINUX_MFD_STMPE_H
#define __LINUX_MFD_STMPE_H
#include <linux/mutex.h>
#define STMPE_SAMPLE_TIME(x) ((x & 0xf) << 4)
#define STMPE_MOD_12B(x) ((x & 0x1) << 3)
#define STMPE_REF_SEL(x) ((x & 0x1) << 1)
#define STMPE_ADC_FREQ(x) (x & 0x3)
#define STMPE_AVE_CTRL(x) ((x & 0x3) << 6)
#define STMPE_DET_DELAY(x) ((x & 0x7) << 3)
#define STMPE_SETTLING(x) (x & 0x7)
#define STMPE_FRACTION_Z(x) (x & 0x7)
#define STMPE_I_DRIVE(x) (x & 0x1)
#define STMPE_OP_MODE(x) ((x & 0x7) << 1)
#define STMPE811_REG_ADC_CTRL1 0x20
#define STMPE811_REG_ADC_CTRL2 0x21
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,
STMPE1600,
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_SYS_CTRL,
STMPE_IDX_SYS_CTRL2,
STMPE_IDX_ICR_LSB,
STMPE_IDX_IER_LSB,
STMPE_IDX_IER_MSB,
STMPE_IDX_ISR_LSB,
STMPE_IDX_ISR_MSB,
STMPE_IDX_GPMR_LSB,
STMPE_IDX_GPMR_CSB,
STMPE_IDX_GPMR_MSB,
STMPE_IDX_GPSR_LSB,
STMPE_IDX_GPSR_CSB,
STMPE_IDX_GPSR_MSB,
STMPE_IDX_GPCR_LSB,
STMPE_IDX_GPCR_CSB,
STMPE_IDX_GPCR_MSB,
STMPE_IDX_GPDR_LSB,
STMPE_IDX_GPDR_CSB,
STMPE_IDX_GPDR_MSB,
STMPE_IDX_GPEDR_LSB,
STMPE_IDX_GPEDR_CSB,
STMPE_IDX_GPEDR_MSB,
STMPE_IDX_GPRER_LSB,
STMPE_IDX_GPRER_CSB,
STMPE_IDX_GPRER_MSB,
STMPE_IDX_GPFER_LSB,
STMPE_IDX_GPFER_CSB,
STMPE_IDX_GPFER_MSB,
STMPE_IDX_GPPUR_LSB,
STMPE_IDX_GPPDR_LSB,
STMPE_IDX_GPAFR_U_MSB,
STMPE_IDX_IEGPIOR_LSB,
STMPE_IDX_IEGPIOR_CSB,
STMPE_IDX_IEGPIOR_MSB,
STMPE_IDX_ISGPIOR_LSB,
STMPE_IDX_ISGPIOR_CSB,
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;
/* For devices that use an ADC */
u8 sample_time;
u8 mod_12b;
u8 ref_sel;
u8 adc_freq;
};
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);
extern int stmpe811_adc_common_init(struct stmpe *stmpe);
#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
#endif
