/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * OP-TEE STM32MP BSEC PTA interface, used by STM32 ROMEM driver * * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
*/
#if IS_ENABLED(CONFIG_NVMEM_STM32_BSEC_OPTEE_TA) /** * stm32_bsec_optee_ta_open() - initialize the STM32 BSEC TA * @ctx: the OP-TEE context on success * * Return: * On success, 0. On failure, -errno.
*/ int stm32_bsec_optee_ta_open(struct tee_context **ctx);
/** * stm32_bsec_optee_ta_close() - release the STM32 BSEC TA * @ctx: the OP-TEE context * * This function used to clean the OP-TEE resources initialized in * stm32_bsec_optee_ta_open(); it can be used as callback to * devm_add_action_or_reset()
*/ void stm32_bsec_optee_ta_close(void *ctx);
/** * stm32_bsec_optee_ta_read() - nvmem read access using TA client driver * @ctx: the OP-TEE context provided by stm32_bsec_optee_ta_open * @offset: nvmem offset * @buf: buffer to fill with nvem values * @bytes: number of bytes to read * * Return: * On success, 0. On failure, -errno.
*/ int stm32_bsec_optee_ta_read(struct tee_context *ctx, unsignedint offset, void *buf, size_t bytes);
/** * stm32_bsec_optee_ta_write() - nvmem write access using TA client driver * @ctx: the OP-TEE context provided by stm32_bsec_optee_ta_open * @lower: number of lower OTP, not protected by ECC * @offset: nvmem offset * @buf: buffer with nvem values * @bytes: number of bytes to write * * Return: * On success, 0. On failure, -errno.
*/ int stm32_bsec_optee_ta_write(struct tee_context *ctx, unsignedint lower, unsignedint offset, void *buf, size_t bytes);
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