diff options
Diffstat (limited to 'include/linux/mfd/stmpe.h')
| -rw-r--r-- | include/linux/mfd/stmpe.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/include/linux/mfd/stmpe.h b/include/linux/mfd/stmpe.h new file mode 100644 index 000000000..87e29d561 --- /dev/null +++ b/include/linux/mfd/stmpe.h @@ -0,0 +1,163 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * Author: Rabin Vincent <rabin.vincent@stericsson.com> 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 |