// SPDX-License-Identifier: GPL-2.0-only
#ifndef GXFP_CONFIG_H
#define GXFP_CONFIG_H

#include <stddef.h>
#include <stdint.h>

#define GXFP_CONFIG_SIZE 0xE0u
#define GXFP_CONFIG_SECTION_COUNT 8u

enum gxfp_config_write_mode {
	GXFP_CONFIG_WRITE_WORD = 0,
	GXFP_CONFIG_WRITE_LOW_BYTE = 1,
	GXFP_CONFIG_WRITE_HIGH_BYTE = 2,
};

struct gxfp_dac_info;

struct gxfp_chicagohu_config_info {
	uint8_t tcode_diff;
	uint16_t tcode;
	uint8_t fdt_delta;
	uint8_t fdt_offset;
	uint16_t checksum;
};

uint16_t gxfp_config_checksum(const uint8_t config[GXFP_CONFIG_SIZE]);

int gxfp_config_update_checksum(uint8_t config[GXFP_CONFIG_SIZE]);

int gxfp_config_modify_register(uint8_t config[GXFP_CONFIG_SIZE],
				uint16_t reg,
				uint16_t value,
				unsigned int section,
				enum gxfp_config_write_mode mode,
				uint16_t *old_value);

int gxfp_config_patch_dac(uint8_t config[GXFP_CONFIG_SIZE],
			  const uint16_t register_values[4]);

int gxfp_config_build_chicagohu_2504(
	uint8_t config[GXFP_CONFIG_SIZE],
	const void *otp,
	size_t otp_len,
	const struct gxfp_dac_info *dac,
	struct gxfp_chicagohu_config_info *info);

#endif