// SPDX-License-Identifier: GPL-2.0-only /* * Rockchip OTP Driver * * Copyright (c) 2018 Rockchip Electronics Co. Ltd. * Author: Finley Xiao <[email protected]> */ #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/nvmem-provider.h> #include <linux/reset.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/platform_device.h> /* OTP Register Offsets */ #define OTPC_SBPI_CTRL … #define OTPC_SBPI_CMD_VALID_PRE … #define OTPC_SBPI_CS_VALID_PRE … #define OTPC_SBPI_STATUS … #define OTPC_USER_CTRL … #define OTPC_USER_ADDR … #define OTPC_USER_ENABLE … #define OTPC_USER_Q … #define OTPC_INT_STATUS … #define OTPC_SBPI_CMD0_OFFSET … #define OTPC_SBPI_CMD1_OFFSET … /* OTP Register bits and masks */ #define OTPC_USER_ADDR_MASK … #define OTPC_USE_USER … #define OTPC_USE_USER_MASK … #define OTPC_USER_FSM_ENABLE … #define OTPC_USER_FSM_ENABLE_MASK … #define OTPC_SBPI_DONE … #define OTPC_USER_DONE … #define SBPI_DAP_ADDR … #define SBPI_DAP_ADDR_SHIFT … #define SBPI_DAP_ADDR_MASK … #define SBPI_CMD_VALID_MASK … #define SBPI_DAP_CMD_WRF … #define SBPI_DAP_REG_ECC … #define SBPI_ECC_ENABLE … #define SBPI_ECC_DISABLE … #define SBPI_ENABLE … #define SBPI_ENABLE_MASK … #define OTPC_TIMEOUT … /* RK3588 Register */ #define RK3588_OTPC_AUTO_CTRL … #define RK3588_OTPC_AUTO_EN … #define RK3588_OTPC_INT_ST … #define RK3588_OTPC_DOUT0 … #define RK3588_NO_SECURE_OFFSET … #define RK3588_NBYTES … #define RK3588_BURST_NUM … #define RK3588_BURST_SHIFT … #define RK3588_ADDR_SHIFT … #define RK3588_AUTO_EN … #define RK3588_RD_DONE … struct rockchip_data { … }; struct rockchip_otp { … }; static int rockchip_otp_reset(struct rockchip_otp *otp) { … } static int rockchip_otp_wait_status(struct rockchip_otp *otp, unsigned int reg, u32 flag) { … } static int rockchip_otp_ecc_enable(struct rockchip_otp *otp, bool enable) { … } static int px30_otp_read(void *context, unsigned int offset, void *val, size_t bytes) { … } static int rk3588_otp_read(void *context, unsigned int offset, void *val, size_t bytes) { … } static int rockchip_otp_read(void *context, unsigned int offset, void *val, size_t bytes) { … } static struct nvmem_config otp_config = …; static const char * const px30_otp_clocks[] = …; static const struct rockchip_data px30_data = …; static const char * const rk3588_otp_clocks[] = …; static const struct rockchip_data rk3588_data = …; static const struct of_device_id rockchip_otp_match[] = …; MODULE_DEVICE_TABLE(of, rockchip_otp_match); static int rockchip_otp_probe(struct platform_device *pdev) { … } static struct platform_driver rockchip_otp_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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