// SPDX-License-Identifier: GPL-2.0 /* * The OCOTP driver for Sunplus SP7021 * * Copyright (C) 2019 Sunplus Technology Inc., All rights reserved. */ #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/nvmem-provider.h> #include <linux/platform_device.h> /* * OTP memory * Each bank contains 4 words (32 bits). * Bank 0 starts at offset 0 from the base. */ #define OTP_WORDS_PER_BANK … #define OTP_WORD_SIZE … #define OTP_BIT_ADDR_OF_BANK … #define QAC628_OTP_NUM_BANKS … #define QAC628_OTP_SIZE … #define OTP_READ_TIMEOUT_US … /* HB_GPIO */ #define ADDRESS_8_DATA … /* OTP_RX */ #define OTP_CONTROL_2 … #define OTP_RD_PERIOD … #define OTP_RD_PERIOD_MASK … #define CPU_CLOCK … #define SEL_BAK_KEY2 … #define SEL_BAK_KEY2_MASK … #define SW_TRIM_EN … #define SW_TRIM_EN_MASK … #define SEL_BAK_KEY … #define SEL_BAK_KEY_MASK … #define OTP_READ … #define OTP_LOAD_SECURE_DATA … #define OTP_LOAD_SECURE_DATA_MASK … #define OTP_DO_CRC … #define OTP_DO_CRC_MASK … #define OTP_STATUS … #define OTP_READ_DONE … #define OTP_READ_DONE_MASK … #define OTP_LOAD_SECURE_DONE_MASK … #define OTP_READ_ADDRESS … enum base_type { … }; struct sp_ocotp_priv { … }; struct sp_ocotp_data { … }; static const struct sp_ocotp_data sp_otp_v0 = …; static int sp_otp_read_real(struct sp_ocotp_priv *otp, int addr, char *value) { … } static int sp_ocotp_read(void *priv, unsigned int offset, void *value, size_t bytes) { … } static struct nvmem_config sp_ocotp_nvmem_config = …; static int sp_ocotp_probe(struct platform_device *pdev) { … } static const struct of_device_id sp_ocotp_dt_ids[] = …; MODULE_DEVICE_TABLE(of, sp_ocotp_dt_ids); static struct platform_driver sp_otp_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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