127 lines
4.2 KiB
C
127 lines
4.2 KiB
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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#ifndef DMA_STM32_H_
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#define DMA_STM32_H_
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#include <soc.h>
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#include <stm32_ll_dma.h>
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#include <drivers/dma.h>
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#include <drivers/clock_control/stm32_clock_control.h>
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/* Maximum data sent in single transfer (Bytes) */
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#define DMA_STM32_MAX_DATA_ITEMS 0xffff
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struct dma_stm32_stream {
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uint32_t direction;
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#ifdef CONFIG_DMAMUX_STM32
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int mux_channel; /* stores the dmamux channel */
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#endif /* CONFIG_DMAMUX_STM32 */
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bool source_periph;
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bool hal_override;
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volatile bool busy;
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uint32_t src_size;
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uint32_t dst_size;
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void *user_data; /* holds the client data */
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dma_callback_t dma_callback;
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};
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struct dma_stm32_data {
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struct dma_context dma_ctx;
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};
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struct dma_stm32_config {
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struct stm32_pclken pclken;
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void (*config_irq)(const struct device *dev);
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bool support_m2m;
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uint32_t base;
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uint32_t max_streams;
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#ifdef CONFIG_DMAMUX_STM32
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uint8_t offset; /* position in the list of dmamux channel list */
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#endif
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struct dma_stm32_stream *streams;
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};
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#if !defined(CONFIG_DMA_STM32_V1)
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/* from DTS the dma stream id is in range 1..<dma-requests> */
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/* so decrease to set range from 0 from now on */
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#define STREAM_OFFSET 1
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#elif defined(CONFIG_DMA_STM32_V1) && defined(CONFIG_DMAMUX_STM32)
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/* typically on the stm32H7 serie, DMA V1 with mux */
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#define STREAM_OFFSET 1
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#else
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/* from DTS the dma stream id is in range 0..<dma-requests>-1 */
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#define STREAM_OFFSET 0
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#endif /* ! CONFIG_DMA_STM32_V1 */
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uint32_t dma_stm32_id_to_stream(uint32_t id);
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#if !defined(CONFIG_DMAMUX_STM32)
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uint32_t dma_stm32_slot_to_channel(uint32_t id);
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#endif
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typedef void (*dma_stm32_clear_flag_func)(DMA_TypeDef *DMAx);
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typedef uint32_t (*dma_stm32_check_flag_func)(DMA_TypeDef *DMAx);
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bool dma_stm32_is_tc_active(DMA_TypeDef *DMAx, uint32_t id);
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void dma_stm32_clear_tc(DMA_TypeDef *DMAx, uint32_t id);
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bool dma_stm32_is_ht_active(DMA_TypeDef *DMAx, uint32_t id);
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void dma_stm32_clear_ht(DMA_TypeDef *DMAx, uint32_t id);
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bool dma_stm32_is_te_active(DMA_TypeDef *DMAx, uint32_t id);
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void dma_stm32_clear_te(DMA_TypeDef *DMAx, uint32_t id);
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#ifdef CONFIG_DMA_STM32_V1
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bool dma_stm32_is_dme_active(DMA_TypeDef *DMAx, uint32_t id);
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void dma_stm32_clear_dme(DMA_TypeDef *DMAx, uint32_t id);
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bool dma_stm32_is_fe_active(DMA_TypeDef *DMAx, uint32_t id);
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void dma_stm32_clear_fe(DMA_TypeDef *DMAx, uint32_t id);
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#endif
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#ifdef CONFIG_DMA_STM32_V2
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bool dma_stm32_is_gi_active(DMA_TypeDef *DMAx, uint32_t id);
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void dma_stm32_clear_gi(DMA_TypeDef *DMAx, uint32_t id);
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#endif
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bool stm32_dma_is_irq_active(DMA_TypeDef *dma, uint32_t id);
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bool stm32_dma_is_ht_irq_active(DMA_TypeDef *dma, uint32_t id);
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bool stm32_dma_is_tc_irq_active(DMA_TypeDef *dma, uint32_t id);
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void stm32_dma_dump_stream_irq(DMA_TypeDef *dma, uint32_t id);
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void stm32_dma_clear_stream_irq(DMA_TypeDef *dma, uint32_t id);
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bool stm32_dma_is_irq_happened(DMA_TypeDef *dma, uint32_t id);
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bool stm32_dma_is_unexpected_irq_happened(DMA_TypeDef *dma, uint32_t id);
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void stm32_dma_enable_stream(DMA_TypeDef *dma, uint32_t id);
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int stm32_dma_disable_stream(DMA_TypeDef *dma, uint32_t id);
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#if !defined(CONFIG_DMAMUX_STM32)
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void stm32_dma_config_channel_function(DMA_TypeDef *dma, uint32_t id,
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uint32_t slot);
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#endif
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#ifdef CONFIG_DMA_STM32_V1
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void stm32_dma_disable_fifo_irq(DMA_TypeDef *dma, uint32_t id);
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bool stm32_dma_check_fifo_mburst(LL_DMA_InitTypeDef *DMAx);
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uint32_t stm32_dma_get_fifo_threshold(uint16_t fifo_mode_control);
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uint32_t stm32_dma_get_mburst(struct dma_config *config, bool source_periph);
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uint32_t stm32_dma_get_pburst(struct dma_config *config, bool source_periph);
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#endif
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#ifdef CONFIG_DMAMUX_STM32
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/* dma_stm32_ api functions are exported to the dmamux_stm32 */
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#define DMA_STM32_EXPORT_API
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int dma_stm32_configure(const struct device *dev, uint32_t id,
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struct dma_config *config);
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int dma_stm32_reload(const struct device *dev, uint32_t id,
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uint32_t src, uint32_t dst, size_t size);
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int dma_stm32_start(const struct device *dev, uint32_t id);
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int dma_stm32_stop(const struct device *dev, uint32_t id);
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int dma_stm32_get_status(const struct device *dev, uint32_t id,
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struct dma_status *stat);
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#else
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#define DMA_STM32_EXPORT_API static
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#endif /* CONFIG_DMAMUX_STM32 */
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#endif /* DMA_STM32_H_*/
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