164 lines
4.0 KiB
C
164 lines
4.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
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*/
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#ifndef __LINUX_MFD_STMPE_H
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#define __LINUX_MFD_STMPE_H
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#include <linux/mutex.h>
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#define STMPE_SAMPLE_TIME(x) ((x & 0xf) << 4)
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#define STMPE_MOD_12B(x) ((x & 0x1) << 3)
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#define STMPE_REF_SEL(x) ((x & 0x1) << 1)
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#define STMPE_ADC_FREQ(x) (x & 0x3)
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#define STMPE_AVE_CTRL(x) ((x & 0x3) << 6)
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#define STMPE_DET_DELAY(x) ((x & 0x7) << 3)
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#define STMPE_SETTLING(x) (x & 0x7)
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#define STMPE_FRACTION_Z(x) (x & 0x7)
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#define STMPE_I_DRIVE(x) (x & 0x1)
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#define STMPE_OP_MODE(x) ((x & 0x7) << 1)
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#define STMPE811_REG_ADC_CTRL1 0x20
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#define STMPE811_REG_ADC_CTRL2 0x21
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struct device;
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struct regulator;
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enum stmpe_block {
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STMPE_BLOCK_GPIO = 1 << 0,
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STMPE_BLOCK_KEYPAD = 1 << 1,
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STMPE_BLOCK_TOUCHSCREEN = 1 << 2,
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STMPE_BLOCK_ADC = 1 << 3,
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STMPE_BLOCK_PWM = 1 << 4,
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STMPE_BLOCK_ROTATOR = 1 << 5,
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};
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enum stmpe_partnum {
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STMPE610,
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STMPE801,
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STMPE811,
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STMPE1600,
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STMPE1601,
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STMPE1801,
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STMPE2401,
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STMPE2403,
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STMPE_NBR_PARTS
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};
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/*
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* For registers whose locations differ on variants, the correct address is
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* obtained by indexing stmpe->regs with one of the following.
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*/
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enum {
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STMPE_IDX_CHIP_ID,
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STMPE_IDX_SYS_CTRL,
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STMPE_IDX_SYS_CTRL2,
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STMPE_IDX_ICR_LSB,
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STMPE_IDX_IER_LSB,
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STMPE_IDX_IER_MSB,
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STMPE_IDX_ISR_LSB,
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STMPE_IDX_ISR_MSB,
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STMPE_IDX_GPMR_LSB,
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STMPE_IDX_GPMR_CSB,
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STMPE_IDX_GPMR_MSB,
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STMPE_IDX_GPSR_LSB,
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STMPE_IDX_GPSR_CSB,
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STMPE_IDX_GPSR_MSB,
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STMPE_IDX_GPCR_LSB,
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STMPE_IDX_GPCR_CSB,
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STMPE_IDX_GPCR_MSB,
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STMPE_IDX_GPDR_LSB,
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STMPE_IDX_GPDR_CSB,
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STMPE_IDX_GPDR_MSB,
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STMPE_IDX_GPEDR_LSB,
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STMPE_IDX_GPEDR_CSB,
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STMPE_IDX_GPEDR_MSB,
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STMPE_IDX_GPRER_LSB,
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STMPE_IDX_GPRER_CSB,
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STMPE_IDX_GPRER_MSB,
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STMPE_IDX_GPFER_LSB,
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STMPE_IDX_GPFER_CSB,
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STMPE_IDX_GPFER_MSB,
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STMPE_IDX_GPPUR_LSB,
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STMPE_IDX_GPPDR_LSB,
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STMPE_IDX_GPAFR_U_MSB,
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STMPE_IDX_IEGPIOR_LSB,
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STMPE_IDX_IEGPIOR_CSB,
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STMPE_IDX_IEGPIOR_MSB,
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STMPE_IDX_ISGPIOR_LSB,
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STMPE_IDX_ISGPIOR_CSB,
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STMPE_IDX_ISGPIOR_MSB,
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STMPE_IDX_MAX,
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};
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struct stmpe_variant_info;
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struct stmpe_client_info;
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struct stmpe_platform_data;
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/**
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* struct stmpe - STMPE MFD structure
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* @vcc: optional VCC regulator
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* @vio: optional VIO regulator
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* @lock: lock protecting I/O operations
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* @irq_lock: IRQ bus lock
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* @dev: device, mostly for dev_dbg()
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* @irq_domain: IRQ domain
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* @client: client - i2c or spi
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* @ci: client specific information
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* @partnum: part number
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* @variant: the detected STMPE model number
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* @regs: list of addresses of registers which are at different addresses on
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* different variants. Indexed by one of STMPE_IDX_*.
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* @irq: irq number for stmpe
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* @num_gpios: number of gpios, differs for variants
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* @ier: cache of IER registers for bus_lock
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* @oldier: cache of IER registers for bus_lock
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* @pdata: platform data
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*/
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struct stmpe {
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struct regulator *vcc;
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struct regulator *vio;
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struct mutex lock;
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struct mutex irq_lock;
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struct device *dev;
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struct irq_domain *domain;
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void *client;
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struct stmpe_client_info *ci;
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enum stmpe_partnum partnum;
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struct stmpe_variant_info *variant;
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const u8 *regs;
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int irq;
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int num_gpios;
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u8 ier[2];
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u8 oldier[2];
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struct stmpe_platform_data *pdata;
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/* For devices that use an ADC */
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u8 sample_time;
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u8 mod_12b;
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u8 ref_sel;
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u8 adc_freq;
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};
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extern int stmpe_reg_write(struct stmpe *stmpe, u8 reg, u8 data);
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extern int stmpe_reg_read(struct stmpe *stmpe, u8 reg);
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extern int stmpe_block_read(struct stmpe *stmpe, u8 reg, u8 length,
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u8 *values);
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extern int stmpe_block_write(struct stmpe *stmpe, u8 reg, u8 length,
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const u8 *values);
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extern int stmpe_set_bits(struct stmpe *stmpe, u8 reg, u8 mask, u8 val);
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extern int stmpe_set_altfunc(struct stmpe *stmpe, u32 pins,
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enum stmpe_block block);
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extern int stmpe_enable(struct stmpe *stmpe, unsigned int blocks);
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extern int stmpe_disable(struct stmpe *stmpe, unsigned int blocks);
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extern int stmpe811_adc_common_init(struct stmpe *stmpe);
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#define STMPE_GPIO_NOREQ_811_TOUCH (0xf0)
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#endif
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