// SPDX-License-Identifier: GPL-2.0
/**
 * Copyright 2021 Google LLC.
 */

#include <linux/regmap.h>
#include <linux/amlogic/ps13216_regs.h>
#include <linux/module.h>

#include "ps13216.h"

static bool ps13216_volatile_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case PS13216_REG_EVENT0:
	case PS13216_REG_EVENT1:
	case PS13216_REG_GLOBAL_EVENTS:
	case PS13216_REG_SETUP:
	case PS13216_REG_CTRL:
	case PS13216_REG_FORCE_ACTIVE:
	case PS13216_REG_EVENT0_MASK:
	case PS13216_REG_EVENT1_MASK:
	case PS13216_REG_ADC_CTRL:
	case PS13216_REG_ADC_FIFO:
	case PS13216_REG_ADC_FIFO_FILL_CNT_LSB:
	case PS13216_REG_ADC_FIFO_FILL_CNT_MSB:
	case PS13216_REG_TEST_SIGNAL_SPY:
		return true;
	default:
		return false;
	}
}

static bool ps13216_readable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case PS13216_REG_EVENT0:
	case PS13216_REG_EVENT1:
	case PS13216_REG_GLOBAL_EVENTS:
	case PS13216_REG_SETUP:
	case PS13216_REG_CTRL:
	case PS13216_REG_FORCE_ACTIVE:
	case PS13216_REG_EVENT0_MASK:
	case PS13216_REG_EVENT1_MASK:
	case PS13216_REG_ADC_CTRL:
	case PS13216_REG_ADC_FIFO:
	case PS13216_REG_ADC_FIFO_FILL_CNT_LSB:
	case PS13216_REG_ADC_FIFO_FILL_CNT_MSB:
	case PS13216_REG_TEST_SIGNAL_SPY:
		return true;
	default:
		return false;
	}
}

static bool ps13216_writeable_register(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case PS13216_REG_EVENT0:
	case PS13216_REG_EVENT1:
	case PS13216_REG_GLOBAL_EVENTS:
	case PS13216_REG_SETUP:
	case PS13216_REG_BB1XB:
	case PS13216_REG_BB0XB:
	case PS13216_REG_FORCE_ACTIVE:
	case PS13216_REG_EVENT0_MASK:
	case PS13216_REG_EVENT1_MASK:
	case PS13216_REG_ADC_CTRL:
	case PS13216_REG_ADC_FIFO_FILL_CNT_MSB:
	case PS13216_REG_TEST_SIGNAL_SPY:
	case PS13216_REG_SW_TEST_MODE:
		return true;
	default:
		return false;
	}
}

struct regmap_config ps13216_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = PS13216_MAX_REGISTER,
	.writeable_reg = ps13216_writeable_register,
	.readable_reg = ps13216_readable_register,
	.volatile_reg = ps13216_volatile_register,
};
EXPORT_SYMBOL(ps13216_regmap_config);
MODULE_LICENSE("GPL v2");