/*
 * Copyright (c) 2019 Song Qiang <songqiang1304521@gmail.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef DMA_STM32_H_
#define DMA_STM32_H_

static u32_t table_m_size[] = {
	LL_DMA_MDATAALIGN_BYTE,
	LL_DMA_MDATAALIGN_HALFWORD,
	LL_DMA_MDATAALIGN_WORD,
};

static u32_t table_p_size[] = {
	LL_DMA_PDATAALIGN_BYTE,
	LL_DMA_PDATAALIGN_HALFWORD,
	LL_DMA_PDATAALIGN_WORD,
};

/* Maximum data sent in single transfer (Bytes) */
#define DMA_STM32_MAX_DATA_ITEMS	0xffff

struct dma_stm32_stream {
	u32_t direction;
	bool source_periph;
	bool busy;
	u32_t src_size;
	u32_t dst_size;
	void *callback_arg;
	void (*dma_callback)(void *arg, u32_t id,
			     int error_code);
};

struct dma_stm32_data {
	int max_streams;
	struct dma_stm32_stream *streams;
};

struct dma_stm32_config {
	struct stm32_pclken pclken;
	void (*config_irq)(struct device *dev);
	bool support_m2m;
	u32_t base;
};

extern u32_t table_ll_stream[];
extern u32_t (*func_ll_is_active_tc[])(DMA_TypeDef *DMAx);
extern void (*func_ll_clear_tc[])(DMA_TypeDef *DMAx);
extern u32_t (*func_ll_is_active_ht[])(DMA_TypeDef *DMAx);
extern void (*func_ll_clear_ht[])(DMA_TypeDef *DMAx);
#ifdef CONFIG_DMA_STM32_V1
extern u32_t table_ll_channel[];
#endif

void stm32_dma_dump_stream_irq(DMA_TypeDef *dma, u32_t id);
void stm32_dma_clear_stream_irq(DMA_TypeDef *dma, u32_t id);
bool stm32_dma_is_irq_happened(DMA_TypeDef *dma, u32_t id);
bool stm32_dma_is_unexpected_irq_happened(DMA_TypeDef *dma, u32_t id);
void stm32_dma_enable_stream(DMA_TypeDef *dma, u32_t id);
int stm32_dma_disable_stream(DMA_TypeDef *dma, u32_t id);
void stm32_dma_config_channel_function(DMA_TypeDef *dma, u32_t id, u32_t slot);
#ifdef CONFIG_DMA_STM32_V1
void stm32_dma_disable_fifo_irq(DMA_TypeDef *dma, u32_t id);
bool stm32_dma_check_fifo_mburst(LL_DMA_InitTypeDef *DMAx);
u32_t stm32_dma_get_fifo_threshold(u16_t fifo_mode_control);
u32_t stm32_dma_get_mburst(struct dma_config *config, bool source_periph);
u32_t stm32_dma_get_pburst(struct dma_config *config, bool source_periph);
#endif

#endif /* DMA_STM32_H_*/