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163 lines
4.0 KiB
163 lines
4.0 KiB
/* 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 <[email protected]> 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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