8fa9fecd8c
Add support for parsing stm32 dma consumer cells, format of which follows dma dts format declared in the Linux Kernel for the dma of stm32: https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/plain/Bindings/dma/stm32-dma.txt Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
13 lines
513 B
C
13 lines
513 B
C
/*
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* Copyright (c) 2019 Song Qiang <songqiang1304521@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* macros for channel-config */
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#define STM32_DMA_CONFIG_PERIPH_ADDR_INC(config) (config & 0x1 << 9)
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#define STM32_DMA_CONFIG_MEM_ADDR_INC(config) (config & 0x1 << 10)
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#define STM32_DMA_CONFIG_PERIPH_INC_FIXED(config) (config & 0x1 << 15)
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#define STM32_DMA_CONFIG_PRIORITY(config) ((config >> 16) & 0x3)
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/* macros for features */
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#define STM32_DMA_FEATURES_FIFO_THRESHOLD(features) (features & 0x3)
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