1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright (c) 2018-2019, STMicroelectronics - All Rights Reserved 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu */ 6*91f16700Schasinglulu 7*91f16700Schasinglulu #ifndef STM32MP_RESET_H 8*91f16700Schasinglulu #define STM32MP_RESET_H 9*91f16700Schasinglulu 10*91f16700Schasinglulu #include <stdint.h> 11*91f16700Schasinglulu 12*91f16700Schasinglulu /* 13*91f16700Schasinglulu * Assert target reset, if @to_us non null, wait until reset is asserted 14*91f16700Schasinglulu * 15*91f16700Schasinglulu * @reset_id: Reset controller ID 16*91f16700Schasinglulu * @to_us: Timeout in microsecond, or 0 if not waiting 17*91f16700Schasinglulu * Return 0 on success and -ETIMEDOUT if waiting and timeout expired 18*91f16700Schasinglulu */ 19*91f16700Schasinglulu int stm32mp_reset_assert(uint32_t reset_id, unsigned int to_us); 20*91f16700Schasinglulu 21*91f16700Schasinglulu /* 22*91f16700Schasinglulu * Enable reset control for target resource 23*91f16700Schasinglulu * 24*91f16700Schasinglulu * @reset_id: Reset controller ID 25*91f16700Schasinglulu */ 26*91f16700Schasinglulu static inline void stm32mp_reset_set(uint32_t reset_id) 27*91f16700Schasinglulu { 28*91f16700Schasinglulu (void)stm32mp_reset_assert(reset_id, 0U); 29*91f16700Schasinglulu } 30*91f16700Schasinglulu 31*91f16700Schasinglulu /* 32*91f16700Schasinglulu * Deassert target reset, if @to_us non null, wait until reset is deasserted 33*91f16700Schasinglulu * 34*91f16700Schasinglulu * @reset_id: Reset controller ID 35*91f16700Schasinglulu * @to_us: Timeout in microsecond, or 0 if not waiting 36*91f16700Schasinglulu * Return 0 on success and -ETIMEDOUT if waiting and timeout expired 37*91f16700Schasinglulu */ 38*91f16700Schasinglulu int stm32mp_reset_deassert(uint32_t reset_id, unsigned int to_us); 39*91f16700Schasinglulu 40*91f16700Schasinglulu /* 41*91f16700Schasinglulu * Release reset control for target resource 42*91f16700Schasinglulu * 43*91f16700Schasinglulu * @reset_id: Reset controller ID 44*91f16700Schasinglulu */ 45*91f16700Schasinglulu static inline void stm32mp_reset_release(uint32_t reset_id) 46*91f16700Schasinglulu { 47*91f16700Schasinglulu (void)stm32mp_reset_deassert(reset_id, 0U); 48*91f16700Schasinglulu } 49*91f16700Schasinglulu 50*91f16700Schasinglulu #endif /* STM32MP_RESET_H */ 51