Initial GXFP5130 userspace prototype

include/gxfp/config.h

@@ -0,0 +1,48 @@
+// 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