/* * Copyright 2016 Toradex AG * Dominik Sliwa * * 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 #include #include /* 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 (64) /* 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 */ /* CAN Registers */ #define APALIS_TK1_K20_CANREG 0x10 /* CAN control & status register RW */ #define APALIS_TK1_K20_CAN_BAUD_REG 0x11 /* CAN Baud set register RW */ #define APALIS_TK1_K20_CAN_IN_BUF_CNT 0x12 /* CAN IN BUF Received Data Count RO */ #define APALIS_TK1_K20_CAN_IN_BUF 0x13 /* CAN IN BUF RO */ #define APALIS_TK1_K20_CAN_OUT_BUF_CNT 0x14 /* CAN OUT BUF Data Count WO, must be written before bulk write to APALIS_TK1_K20_CAN0_OUT_BUF_CNT */ #define APALIS_TK1_K20_CAN_OUT_FIF0 0x15 /* CAN OUT BUF WO */ #define APALIS_TK1_K20_CAN_DEV_OFFSET(x) (x ? 0:0x10) /* ADC Registers */ #define APALIS_TK1_K20_ADCREG 0x30 /* ADC control & status register RW */ #define APALIS_TK1_K20_ADC_CH0L 0x31 /* ADC Channel 0 LSB RO */ #define APALIS_TK1_K20_ADC_CH0H 0x32 /* ADC Channel 0 MSB RO */ #define APALIS_TK1_K20_ADC_CH1L 0x33 /* ADC Channel 1 LSB RO */ #define APALIS_TK1_K20_ADC_CH1H 0x34 /* ADC Channel 1 MSB RO */ #define APALIS_TK1_K20_ADC_CH2L 0x35 /* ADC Channel 2 LSB RO */ #define APALIS_TK1_K20_ADC_CH2H 0x36 /* ADC Channel 2 MSB RO */ #define APALIS_TK1_K20_ADC_CH3L 0x37 /* ADC Channel 3 LSB RO */ #define APALIS_TK1_K20_ADC_CH3H 0x38 /* ADC Channel 3 MSB RO */ /* Bulk read of LSB register can be use to read entire 16-bit in one command */ /* TSC Register */ #define APALIS_TK1_K20_TSCREG 0x40 /* TSC control & status register RW */ #define APALIS_TK1_K20_TSC_XML 0x41 /* TSC X- data LSB RO */ #define APALIS_TK1_K20_TSC_XMH 0x42 /* TSC X- data MSB RO */ #define APALIS_TK1_K20_TSC_XPL 0x43 /* TSC X+ data LSB RO */ #define APALIS_TK1_K20_TSC_XPH 0x44 /* TSC X+ data MSB RO */ #define APALIS_TK1_K20_TSC_YML 0x45 /* TSC Y- data LSB RO */ #define APALIS_TK1_K20_TSC_YMH 0x46 /* TSC Y- data MSB RO */ #define APALIS_TK1_K20_TSC_YPL 0x47 /* TSC Y+ data LSB RO */ #define APALIS_TK1_K20_TSC_YPH 0x48 /* 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) /* GPIO Registers */ #define APALIS_TK1_K20_GPIOREG 0x50 /* GPIO control & status register RW */ #define APALIS_TK1_K20_GPIO_NO 0x51 /* currently configured GPIO RW */ #define APALIS_TK1_K20_GPIO_STA 0x52 /* 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) /* 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 0x05 #define FW_MINOR (APALIS_TK1_K20_FW_VER & 0x0F) #define FW_MAJOR ((APALIS_TK1_K20_FW_VER & 0xF0) >> 8) #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_K20_MAX_SPI_SPEED 10000000 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 */