diff options
Diffstat (limited to 'chip/stm32/crc_hw.h')
| -rw-r--r-- | chip/stm32/crc_hw.h | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/chip/stm32/crc_hw.h b/chip/stm32/crc_hw.h deleted file mode 100644 index 2a50d5760e..0000000000 --- a/chip/stm32/crc_hw.h +++ /dev/null @@ -1,41 +0,0 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef __CROS_EC_CRC_HW_H -#define __CROS_EC_CRC_HW_H -/* CRC-32 hardware implementation with USB constants */ - -#include "clock.h" -#include "registers.h" - -static inline void crc32_init(void) -{ - /* switch on CRC controller */ - STM32_RCC_AHBENR |= BIT(6); /* switch on CRC controller */ - /* Delay 1 AHB clock cycle after the clock is enabled */ - clock_wait_bus_cycles(BUS_AHB, 1); - /* reset CRC state */ - STM32_CRC_CR = STM32_CRC_CR_RESET | STM32_CRC_CR_REV_OUT - | STM32_CRC_CR_REV_IN_WORD; - while (STM32_CRC_CR & 1) - ; -} - -static inline void crc32_hash32(uint32_t val) -{ - STM32_CRC_DR = val; -} - -static inline void crc32_hash16(uint16_t val) -{ - STM32_CRC_DR16 = val; -} - -static inline uint32_t crc32_result(void) -{ - return STM32_CRC_DR ^ 0xFFFFFFFF; -} - -#endif /* __CROS_EC_CRC_HW_H */ |