dma.h

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#ifndef DMA_H
#define DMA_H
 
#include <stdint.h>
#include "errcode.h"
 
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif /* __cplusplus */
#endif /* __cplusplus */
 
typedef struct dma_ch_user_memory_config {
    uint32_t src;
    uint32_t dest;
    uint16_t transfer_num;
    uint8_t priority;
    uint8_t width;
} dma_ch_user_memory_config_t;
 
typedef struct dma_ch_user_peripheral_config {
    uint32_t src;
    uint32_t dest;
    uint16_t transfer_num;
    uint16_t src_handshaking;
    uint16_t dest_handshaking;
    uint8_t trans_type;
    uint8_t trans_dir;
    uint8_t priority;
    uint8_t src_width;
    uint8_t dest_width;
    uint8_t burst_length;
    uint8_t src_increment;
    uint8_t dest_increment;
    uint8_t protection;
} dma_ch_user_peripheral_config_t;
 
typedef void (*dma_transfer_cb_t)(uint8_t intr, uint8_t channel, uintptr_t arg);
 
errcode_t uapi_dma_init(void);
 
void uapi_dma_deinit(void);
 
errcode_t uapi_dma_open(void);
 
void uapi_dma_close(void);
 
errcode_t uapi_dma_start_transfer(uint8_t channel);
 
errcode_t uapi_dma_end_transfer(uint8_t channel);
 
uint32_t uapi_dma_get_block_ts(uint8_t channel);
 
errcode_t uapi_dma_transfer_memory_single(const dma_ch_user_memory_config_t *user_cfg,
                                          dma_transfer_cb_t callback, uintptr_t arg);
 
errcode_t uapi_dma_configure_peripheral_transfer_single(const dma_ch_user_peripheral_config_t *user_cfg,
                                                        uint8_t *channel, dma_transfer_cb_t callback, uintptr_t arg);
 
#if defined(CONFIG_DMA_SUPPORT_LLI)
uint8_t uapi_dma_get_lli_channel(uint8_t burst_length, uint8_t handshaking);
 
errcode_t uapi_dma_transfer_memory_lli(uint8_t channel, const dma_ch_user_memory_config_t *user_cfg,
                                       dma_transfer_cb_t callback);
 
errcode_t uapi_dma_configure_peripheral_transfer_lli(uint8_t channel, const dma_ch_user_peripheral_config_t *user_cfg,
                                                     dma_transfer_cb_t callback);
 
errcode_t uapi_dma_enable_lli(uint8_t channel, dma_transfer_cb_t callback, uintptr_t arg);
#endif /* CONFIG_DMA_SUPPORT_LLI */
 
#ifdef CONFIG_DMA_SUPPORT_LPM
errcode_t uapi_dma_resume(uintptr_t arg);
 
errcode_t uapi_dma_suspend(uintptr_t arg);
#endif
#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */
 
#endif