diff options
Diffstat (limited to 'bsps/arm/imxrt/mcux-sdk/drivers/dmamux/fsl_dmamux.c')
-rw-r--r-- | bsps/arm/imxrt/mcux-sdk/drivers/dmamux/fsl_dmamux.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/bsps/arm/imxrt/mcux-sdk/drivers/dmamux/fsl_dmamux.c b/bsps/arm/imxrt/mcux-sdk/drivers/dmamux/fsl_dmamux.c new file mode 100644 index 0000000000..8bfbe6c367 --- /dev/null +++ b/bsps/arm/imxrt/mcux-sdk/drivers/dmamux/fsl_dmamux.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * Copyright 2016-2017 NXP + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include "fsl_dmamux.h" + +/******************************************************************************* + * Definitions + ******************************************************************************/ + +/* Component ID definition, used by tools. */ +#ifndef FSL_COMPONENT_ID +#define FSL_COMPONENT_ID "platform.drivers.dmamux" +#endif + +/******************************************************************************* + * Prototypes + ******************************************************************************/ + +/*! + * @brief Get instance number for DMAMUX. + * + * @param base DMAMUX peripheral base address. + */ +static uint32_t DMAMUX_GetInstance(DMAMUX_Type *base); + +/******************************************************************************* + * Variables + ******************************************************************************/ + +/*! @brief Array to map DMAMUX instance number to base pointer. */ +static DMAMUX_Type *const s_dmamuxBases[] = DMAMUX_BASE_PTRS; + +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) +/*! @brief Array to map DMAMUX instance number to clock name. */ +static const clock_ip_name_t s_dmamuxClockName[] = DMAMUX_CLOCKS; +#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ + +/******************************************************************************* + * Code + ******************************************************************************/ +static uint32_t DMAMUX_GetInstance(DMAMUX_Type *base) +{ + uint32_t instance; + + /* Find the instance index from base address mappings. */ + for (instance = 0; instance < ARRAY_SIZE(s_dmamuxBases); instance++) + { + if (s_dmamuxBases[instance] == base) + { + break; + } + } + + assert(instance < ARRAY_SIZE(s_dmamuxBases)); + + return instance; +} + +/*! + * brief Initializes the DMAMUX peripheral. + * + * This function ungates the DMAMUX clock. + * + * param base DMAMUX peripheral base address. + * + */ +void DMAMUX_Init(DMAMUX_Type *base) +{ +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) + CLOCK_EnableClock(s_dmamuxClockName[DMAMUX_GetInstance(base)]); +#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ +} + +/*! + * brief Deinitializes the DMAMUX peripheral. + * + * This function gates the DMAMUX clock. + * + * param base DMAMUX peripheral base address. + */ +void DMAMUX_Deinit(DMAMUX_Type *base) +{ +#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) + CLOCK_DisableClock(s_dmamuxClockName[DMAMUX_GetInstance(base)]); +#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ +} |