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/*
* Copyright 2016 Toradex AG
* Dominik Sliwa <dominik.sliwa@toradex.com>
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation.
*/
#ifndef __LINUX_MFD_APALIS_TK1_K20_H
#define __LINUX_MFD_APALIS_TK1_K20_H
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/regmap.h>
/* Commands and registers used in SPI communication */
/* Commands*/
#define APALIS_TK1_K20_READ_INST 0x0F
#define APALIS_TK1_K20_WRITE_INST 0xF0
#define APALIS_TK1_K20_BULK_WRITE_INST 0x3C
#define APALIS_TK1_K20_BULK_READ_INST 0xC3
#define APALIS_TK1_K20_MAX_BULK (32)
/* General registers*/
#define APALIS_TK1_K20_STAREG 0x00 /* general status register RO */
#define APALIS_TK1_K20_REVREG 0x01 /* FW revision register RO*/
#define APALIS_TK1_K20_IRQREG 0x02 /* IRQ status RW(write of 1 will reset the bit) */
#define APALIS_TK1_K20_CTRREG 0x03 /* general control register RW */
#define APALIS_TK1_K20_MSQREG 0x04 /* IRQ mask register RW */
/* 0x05-0x0F Reserved */
/* CAN Registers */
#define APALIS_TK1_K20_CANREG 0x10 /* CAN0 control & status register RW */
#define APALIS_TK1_K20_CANERR 0x11 /* CAN0 error register RW */
#define APALIS_TK1_K20_CAN_BAUD_REG 0x12 /* CAN0 baud set register RW */
#define APALIS_TK1_K20_CAN_BIT_1 0x13 /* CAN0 bit timing register 1 RW */
#define APALIS_TK1_K20_CAN_BIT_2 0x14 /* CAN0 bit timing register 2 RW */
#define APALIS_TK1_K20_CAN_IN_BUF_CNT 0x15 /* CAN0 IN received data count RO */
#define APALIS_TK1_K20_CAN_IN_BUF 0x16 /* CAN0 IN RO */
/* buffer size is 13 bytes */
#define APALIS_TK1_K20_CAN_IN_BUF_END 0x22 /* CAN0 IN RO */
#define APALIS_TK1_K20_CAN_OUT_BUF_CNT 0x23 /* CAN0 OUT data Count WO */
#define APALIS_TK1_K20_CAN_OUT_BUF 0x26 /* CAN0 OUT WO */
/* buffer size is 13 bytes */
#define APALIS_TK1_K20_CAN_OUT_BUF_END (APALIS_TK1_K20_CAN_OUT_BUF + 13 - 1)/* CAN OUT BUF END */
#define APALIS_TK1_K20_CAN_DEV_OFFSET(x) (x ? 0x30 : 0)
/* 0x33-0x3F Reserved */
/* 0x40-0x62 CAN1 registers same layout as CAN0*/
/* 0x63-0x6F Reserved */
/* ADC Registers */
#define APALIS_TK1_K20_ADCREG 0x70 /* ADC control & status register RW */
#define APALIS_TK1_K20_ADC_CH0L 0x71 /* ADC Channel 0 LSB RO */
#define APALIS_TK1_K20_ADC_CH0H 0x72 /* ADC Channel 0 MSB RO */
#define APALIS_TK1_K20_ADC_CH1L 0x73 /* ADC Channel 1 LSB RO */
#define APALIS_TK1_K20_ADC_CH1H 0x74 /* ADC Channel 1 MSB RO */
#define APALIS_TK1_K20_ADC_CH2L 0x75 /* ADC Channel 2 LSB RO */
#define APALIS_TK1_K20_ADC_CH2H 0x76 /* ADC Channel 2 MSB RO */
#define APALIS_TK1_K20_ADC_CH3L 0x77 /* ADC Channel 3 LSB RO */
#define APALIS_TK1_K20_ADC_CH3H 0x78 /* ADC Channel 3 MSB RO */
/* Bulk read of LSB register can be use to read entire 16-bit in one command */
/* Bulk read of APALIS_TK1_K20_ADC_CH0L register can be use to read all
* ADC channels in one command */
/* 0x79-0x7F reserved */
/* TSC Register */
#define APALIS_TK1_K20_TSCREG 0x80 /* TSC control & status register RW */
#define APALIS_TK1_K20_TSC_XML 0x81 /* TSC X- data LSB RO */
#define APALIS_TK1_K20_TSC_XMH 0x82 /* TSC X- data MSB RO */
#define APALIS_TK1_K20_TSC_XPL 0x83 /* TSC X+ data LSB RO */
#define APALIS_TK1_K20_TSC_XPH 0x84 /* TSC X+ data MSB RO */
#define APALIS_TK1_K20_TSC_YML 0x85 /* TSC Y- data LSB RO */
#define APALIS_TK1_K20_TSC_YMH 0x86 /* TSC Y- data MSB RO */
#define APALIS_TK1_K20_TSC_YPL 0x87 /* TSC Y+ data LSB RO */
#define APALIS_TK1_K20_TSC_YPH 0x88 /* TSC Y+ data MSB RO */
/* Bulk read of LSB register can be use to read entire 16-bit in one command */
#define APALIS_TK1_K20_TSC_ENA BIT(0)
#define APALIS_TK1_K20_TSC_ENA_MASK BIT(0)
/* 0x89-0x8F Reserved */
/* GPIO Registers */
#define APALIS_TK1_K20_GPIOREG 0x90 /* GPIO control & status register RW */
#define APALIS_TK1_K20_GPIO_NO 0x91 /* currently configured GPIO RW */
#define APALIS_TK1_K20_GPIO_STA 0x92 /* Status register for the APALIS_TK1_K20_GPIO_NO GPIO RW */
/* MSB | 0 ... 0 | VALUE | Output-1 / Input-0 | LSB */
#define APALIS_TK1_K20_GPIO_STA_OE BIT(0)
#define APALIS_TK1_K20_GPIO_STA_VAL BIT(1)
/* 0x93-0xFD Reserved */
#define APALIS_TK1_K20_RET_REQ 0xFE
/* 0xFF Reserved */
/* Interrupt flags */
#define APALIS_TK1_K20_GEN_IRQ 0
#define APALIS_TK1_K20_CAN0_IRQ 1
#define APALIS_TK1_K20_CAN1_IRQ 2
#define APALIS_TK1_K20_ADC_IRQ 3
#define APALIS_TK1_K20_TSC_IRQ 4
#define APALIS_TK1_K20_GPIO_IRQ 5
#define APALIS_TK1_K20_FW_VER 0x0A
#define FW_MINOR (APALIS_TK1_K20_FW_VER & 0x0F)
#define FW_MAJOR ((APALIS_TK1_K20_FW_VER & 0xF0) >> 4)
#define TK1_K20_SENTINEL 0x55
#define TK1_K20_INVAL 0xAA
#define APALIS_TK1_K20_NUMREGS 0x3f
#define APALIS_TK1_K20_IRQ_REG_CNT 1
#define APALIS_TK1_K20_IRQ_PER_REG 8
#define APALIS_TK1_CAN_CLK_UNIT 6250
#define APALIS_TK1_K20_MAX_SPI_SPEED 12000000
struct apalis_tk1_k20_regmap {
struct regmap *regmap;
struct device *dev;
struct regmap_irq irqs[APALIS_TK1_K20_IRQ_REG_CNT * APALIS_TK1_K20_IRQ_PER_REG];
struct regmap_irq_chip irq_chip;
struct regmap_irq_chip_data *irq_data;
struct mutex lock;
int irq;
int flags;
int ezpcs_gpio;
int reset_gpio;
int appcs_gpio;
int int2_gpio;
};
void apalis_tk1_k20_lock(struct apalis_tk1_k20_regmap *apalis_tk1_k20);
void apalis_tk1_k20_unlock(struct apalis_tk1_k20_regmap *apalis_tk1_k20);
int apalis_tk1_k20_reg_read(struct apalis_tk1_k20_regmap *apalis_tk1_k20, unsigned int offset, u32 *val);
int apalis_tk1_k20_reg_write(struct apalis_tk1_k20_regmap *apalis_tk1_k20, unsigned int offset, u32 val);
int apalis_tk1_k20_reg_read_bulk(struct apalis_tk1_k20_regmap *apalis_tk1_k20, unsigned int offset,
uint8_t *val, size_t size);
int apalis_tk1_k20_reg_write_bulk(struct apalis_tk1_k20_regmap *apalis_tk1_k20, unsigned int offset,
uint8_t *val, size_t size);
int apalis_tk1_k20_reg_rmw(struct apalis_tk1_k20_regmap *apalis_tk1_k20, unsigned int offset,
u32 mask, u32 val);
int apalis_tk1_k20_irq_mask(struct apalis_tk1_k20_regmap *apalis_tk1_k20, int irq);
int apalis_tk1_k20_irq_unmask(struct apalis_tk1_k20_regmap *apalis_tk1_k20, int irq);
int apalis_tk1_k20_irq_request(struct apalis_tk1_k20_regmap *apalis_tk1_k20, int irq,
irq_handler_t handler, const char *name, void *dev);
int apalis_tk1_k20_irq_free(struct apalis_tk1_k20_regmap *apalis_tk1_k20, int irq, void *dev);
int apalis_tk1_k20_irq_status(struct apalis_tk1_k20_regmap *apalis_tk1_k20, int irq,
int *enabled, int *pending);
int apalis_tk1_k20_get_flags(struct apalis_tk1_k20_regmap *apalis_tk1_k20);
struct apalis_tk1_k20_can_platform_data {
uint8_t id;
u16 status;
};
struct apalis_tk1_k20_tsc_platform_data {
u16 status;
};
struct apalis_tk1_k20_adc_platform_data {
u16 status;
};
struct apalis_tk1_k20_gpio_platform_data {
u16 status;
};
#define APALIS_TK1_K20_USES_TSC BIT(0)
#define APALIS_TK1_K20_USES_ADC BIT(1)
#define APALIS_TK1_K20_USES_CAN BIT(2)
#define APALIS_TK1_K20_USES_GPIO BIT(3)
struct apalis_tk1_k20_platform_data {
unsigned int flags;
struct apalis_tk1_k20_tsc_platform_data touch;
struct apalis_tk1_k20_adc_platform_data adc;
struct apalis_tk1_k20_can_platform_data can0;
struct apalis_tk1_k20_can_platform_data can1;
struct apalis_tk1_k20_gpio_platform_data gpio;
int ezpcs_gpio;
int reset_gpio;
int appcs_gpio;
int int2_gpio;
};
#define APALIS_TK1_K20_ADC_CHANNELS 4
#define APALIS_TK1_K20_ADC_BITS 16
#define APALIS_TK1_K20_VADC_MILI 3300
enum apalis_tk1_k20_adc_id {
APALIS_TK1_K20_ADC1,
APALIS_TK1_K20_ADC2,
APALIS_TK1_K20_ADC3,
APALIS_TK1_K20_ADC4
};
#endif /* ifndef __LINUX_MFD_APALIS_TK1_K20_H */
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