drivers/dma/dma_sedi.c - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright (c) 2023 Intel Corporation.
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 #define DT_DRV_COMPAT intel_sedi_dma

 #include <errno.h>
 #include <stdio.h>
 #include <zephyr/kernel.h>
 #include <zephyr/pm/device.h>
 #include <string.h>
 #include <zephyr/init.h>
 #include <zephyr/drivers/dma.h>
 #include <zephyr/devicetree.h>
 #include <zephyr/cache.h>
 #include <soc.h>

 #include "sedi_driver_dma.h"
 #include "sedi_driver_core.h"

 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(sedi_dma, CONFIG_DMA_LOG_LEVEL);

 extern void dma_isr(sedi_dma_t dma_device);

 struct dma_sedi_config_info {
 	sedi_dma_t peripheral_id; /* Controller instance. */
 	uint8_t chn_num;
 	void (*irq_config)(void);
 };

 struct dma_sedi_driver_data {
 	struct dma_config dma_configs[DMA_CHANNEL_NUM];
 };

 #define DEV_DATA(dev) ((struct dma_sedi_driver_data *const)(dev)->data)
 #define DEV_CFG(dev) \
 	((const struct dma_sedi_config_info *const)(dev)->config)

 /*
  * this function will be called when dma transferring is completed
  * or error happened
  */
 static void dma_handler(sedi_dma_t dma_device, int channel, int event_id,
 			void *args)
 {
 	ARG_UNUSED(args);
 	const struct device *dev = (const struct device *)args;
 	struct dma_sedi_driver_data *const data = DEV_DATA(dev);
 	struct dma_config *config = &(data->dma_configs[channel]);

 	/* run user-defined callback */
 	if (config->dma_callback) {
 		if ((event_id == SEDI_DMA_EVENT_TRANSFER_DONE) &&
 		    (config->complete_callback_en)) {
 			config->dma_callback(dev, config->user_data,
 					channel, 0);
 		} else if (config->error_callback_en) {
 			config->dma_callback(dev, config->user_data,
 					channel, event_id);
 		}
 	}
 }

 /* map width to certain macros*/
 static int width_index(uint32_t num_bytes, uint32_t *index)
 {
 	switch (num_bytes) {
 	case 1:
 		*index = DMA_TRANS_WIDTH_8;
 		break;
 	case 2:
 		*index = DMA_TRANS_WIDTH_16;
 		break;
 	case 4:
 		*index = DMA_TRANS_WIDTH_32;
 		break;
 	case 8:
 		*index = DMA_TRANS_WIDTH_64;
 		break;
 	case 16:
 		*index = DMA_TRANS_WIDTH_128;
 		break;
 	case 32:
 		*index = DMA_TRANS_WIDTH_256;
 		break;
 	default:
 		return -ENOTSUP;
 	}

 	return 0;
 }

 /* map burst size to certain macros*/
 static int burst_index(uint32_t num_units, uint32_t *index)
 {
 	switch (num_units) {
 	case 1:
 		*index = DMA_BURST_TRANS_LENGTH_1;
 		break;
 	case 4:
 		*index = DMA_BURST_TRANS_LENGTH_4;
 		break;
 	case 8:
 		*index = DMA_BURST_TRANS_LENGTH_8;
 		break;
 	case 16:
 		*index = DMA_BURST_TRANS_LENGTH_16;
 		break;
 	case 32:
 		*index = DMA_BURST_TRANS_LENGTH_32;
 		break;
 	case 64:
 		*index = DMA_BURST_TRANS_LENGTH_64;
 		break;
 	case 128:
 		*index = DMA_BURST_TRANS_LENGTH_128;
 		break;
 	case 256:
 		*index = DMA_BURST_TRANS_LENGTH_256;
 		break;
 	default:
 		return -ENOTSUP;
 	}

 	return 0;
 }

 static void dma_config_convert(struct dma_config *config,
 			       dma_memory_type_t *src_mem,
 			       dma_memory_type_t *dst_mem,
 			       uint8_t *sedi_dma_dir)
 {

 	*src_mem = DMA_SRAM_MEM;
 	*dst_mem = DMA_SRAM_MEM;
 	*sedi_dma_dir = MEMORY_TO_MEMORY;
 	switch (config->channel_direction) {
 	case MEMORY_TO_MEMORY:
 	case MEMORY_TO_PERIPHERAL:
 	case PERIPHERAL_TO_MEMORY:
 	case PERIPHERAL_TO_PERIPHERAL:
 		*sedi_dma_dir = config->channel_direction;
 		break;
 	case MEMORY_TO_HOST:
 		*dst_mem = DMA_DRAM_MEM;
 		break;
 	case HOST_TO_MEMORY:
 		*src_mem = DMA_DRAM_MEM;
 		break;
 #ifdef MEMORY_TO_IMR
 	case MEMORY_TO_IMR:
 		*dst_mem = DMA_UMA_MEM;
 		break;
 #endif
 #ifdef IMR_TO_MEMORY
 	case IMR_TO_MEMORY:
 		*src_mem = DMA_UMA_MEM;
 		break;
 #endif
 	}
 }

 /* config basic dma */
 static int dma_sedi_apply_common_config(sedi_dma_t dev, uint32_t channel,
 					struct dma_config *config, uint8_t *dir)
 {
 	uint8_t direction = MEMORY_TO_MEMORY;
 	dma_memory_type_t src_mem = DMA_SRAM_MEM, dst_mem = DMA_SRAM_MEM;

 	dma_config_convert(config, &src_mem, &dst_mem, &direction);

 	if (dir) {
 		*dir = direction;
 	}

 	/* configure dma transferring direction*/
 	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_DIRECTION,
 			 direction);

 	if (direction == MEMORY_TO_MEMORY) {
 		sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_SR_MEM_TYPE,
 				 src_mem);
 		sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_DT_MEM_TYPE,
 				 dst_mem);
 	} else if (direction == MEMORY_TO_PERIPHERAL) {
 		sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_DEVICE_ID,
 				 config->dma_slot);
 		sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_POLARITY,
 				 DMA_HS_POLARITY_HIGH);
 		sedi_dma_control(dev, channel,
 				 SEDI_CONFIG_DMA_HS_DEVICE_ID_PER_DIR,
 				 DMA_HS_PER_TX);
 	} else if (direction == PERIPHERAL_TO_MEMORY) {
 		sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_DEVICE_ID,
 				 config->dma_slot);
 		sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_POLARITY,
 				 DMA_HS_POLARITY_HIGH);
 		sedi_dma_control(dev, channel,
 				 SEDI_CONFIG_DMA_HS_DEVICE_ID_PER_DIR,
 				 DMA_HS_PER_RX);
 	} else {
 		return -1;
 	}
 	return 0;
 }

 static int dma_sedi_apply_single_config(sedi_dma_t dev, uint32_t channel,
 					struct dma_config *config)
 {
 	int ret = 0;
 	uint32_t temp = 0;

 	ret = dma_sedi_apply_common_config(dev, channel, config, NULL);
 	if (ret != 0) {
 		goto INVALID_ARGS;
 	}
 	/* configurate dma width of source data*/
 	ret = width_index(config->source_data_size, &temp);
 	if (ret != 0) {
 		goto INVALID_ARGS;
 	}
 	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_SR_TRANS_WIDTH, temp);

 	/* configurate dma width of destination data*/
 	ret = width_index(config->dest_data_size, &temp);
 	if (ret != 0) {
 		goto INVALID_ARGS;
 	}
 	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_DT_TRANS_WIDTH, temp);

 	/* configurate dma burst size*/
 	ret = burst_index(config->source_burst_length, &temp);
 	if (ret != 0) {
 		goto INVALID_ARGS;
 	}
 	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_BURST_LENGTH, temp);
 	return 0;

 INVALID_ARGS:
 	return ret;
 }

 static int dma_sedi_chan_config(const struct device *dev, uint32_t channel,
 				struct dma_config *config)
 {
 	if ((dev == NULL) || (channel >= DEV_CFG(dev)->chn_num)
 		|| (config == NULL)
 		|| (config->block_count != 1)) {
 		goto INVALID_ARGS;
 	}

 	const struct dma_sedi_config_info *const info = DEV_CFG(dev);
 	struct dma_sedi_driver_data *const data = DEV_DATA(dev);

 	memcpy(&(data->dma_configs[channel]), config, sizeof(struct dma_config));

 	/* initialize the dma controller, following the sedi api*/
 	sedi_dma_event_cb_t cb = dma_handler;

 	sedi_dma_init(info->peripheral_id, (int)channel, cb, (void *)dev);

 	return 0;

 INVALID_ARGS:
 	return -1;
 }

 static int dma_sedi_reload(const struct device *dev, uint32_t channel,
 			      uint64_t src, uint64_t dst, size_t size)
 {
 	if ((dev == NULL) || (channel >= DEV_CFG(dev)->chn_num)) {
 		LOG_ERR("dma reload failed for invalid args");
 		return -ENOTSUP;
 	}

 	int ret = 0;
 	struct dma_sedi_driver_data *const data = DEV_DATA(dev);
 	struct dma_config *config = &(data->dma_configs[channel]);
 	struct dma_block_config *block_config;

 	if ((config == NULL) || (config->head_block == NULL)) {
 		LOG_ERR("dma reload failed, no config found");
 		return -ENOTSUP;
 	}
 	block_config = config->head_block;

 	if ((config->block_count == 1) || (block_config->next_block == NULL)) {
 		block_config->source_address = src;
 		block_config->dest_address = dst;
 		block_config->block_size = size;
 	} else {
 		LOG_ERR("no reload support for multi-linkedlist mode");
 		return -ENOTSUP;
 	}
 	return ret;
 }

 static int dma_sedi_start(const struct device *dev, uint32_t channel)
 {
 	if ((dev == NULL) || (channel >= DEV_CFG(dev)->chn_num)) {
 		LOG_ERR("dma transferring failed for invalid args");
 		return -ENOTSUP;
 	}

 	int ret = -1;
 	const struct dma_sedi_config_info *const info = DEV_CFG(dev);
 	struct dma_sedi_driver_data *const data = DEV_DATA(dev);
 	struct dma_config *config = &(data->dma_configs[channel]);
 	struct dma_block_config *block_config = config->head_block;
 	uint64_t src_addr, dst_addr;

 	if (config->block_count == 1) {
 		/* call sedi start function */
 		ret = dma_sedi_apply_single_config(info->peripheral_id,
 						   channel, config);
 		if (ret) {
 			goto ERR;
 		}
 		src_addr = block_config->source_address;
 		dst_addr = block_config->dest_address;

 		ret = sedi_dma_start_transfer(info->peripheral_id, channel,
 						src_addr, dst_addr, block_config->block_size);
 	} else {
 		LOG_ERR("MULTIPLE_BLOCK CONFIG is not set");
 		goto ERR;
 	}

 	if (ret != SEDI_DRIVER_OK) {
 		goto ERR;
 	}

 	return ret;

 ERR:
 	LOG_ERR("dma transfer failed");
 	return ret;
 }

 static int dma_sedi_stop(const struct device *dev, uint32_t channel)
 {
 	const struct dma_sedi_config_info *const info = DEV_CFG(dev);

 	LOG_DBG("stopping dma: %p, %d", dev, channel);
 	sedi_dma_abort_transfer(info->peripheral_id, channel);

 	return 0;
 }

 static const struct dma_driver_api dma_funcs = { .config = dma_sedi_chan_config,
 						 .start = dma_sedi_start,
 						 .stop = dma_sedi_stop,
 						 .reload = dma_sedi_reload,
 						 .get_status = NULL
 };

 static int dma_sedi_init(const struct device *dev)
 {
 	const struct dma_sedi_config_info *const config = DEV_CFG(dev);

 	config->irq_config();

 	return 0;
 }

 #define DMA_DEVICE_INIT_SEDI(inst) \
 	static void dma_sedi_##inst##_irq_config(void);			\
 									\
 	static struct dma_sedi_driver_data dma_sedi_dev_data_##inst; \
 	static const struct dma_sedi_config_info dma_sedi_config_data_##inst = { \
 		.peripheral_id = DT_INST_PROP(inst, peripheral_id), \
 		.chn_num = DT_INST_PROP(inst, dma_channels), \
 		.irq_config = dma_sedi_##inst##_irq_config \
 	}; \
 	DEVICE_DT_DEFINE(DT_INST(inst, DT_DRV_COMPAT), &dma_sedi_init, \
 	      NULL, &dma_sedi_dev_data_##inst, &dma_sedi_config_data_##inst, PRE_KERNEL_2, \
 	      CONFIG_KERNEL_INIT_PRIORITY_DEVICE, (void *)&dma_funcs); \
 									\
 	static void dma_sedi_##inst##_irq_config(void)			\
 	{								\
 		IRQ_CONNECT(DT_INST_IRQN(inst),				\
 			    DT_INST_IRQ(inst, priority), dma_isr,	\
 			    (void *)DT_INST_PROP(inst, peripheral_id),			\
 			    DT_INST_IRQ(inst, sense));			\
 		irq_enable(DT_INST_IRQN(inst));				\
 	}

 DT_INST_FOREACH_STATUS_OKAY(DMA_DEVICE_INIT_SEDI)
	/*
	* Copyright (c) 2023 Intel Corporation.
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	#define DT_DRV_COMPAT intel_sedi_dma

	#include <errno.h>
	#include <stdio.h>
	#include <zephyr/kernel.h>
	#include <zephyr/pm/device.h>
	#include <string.h>
	#include <zephyr/init.h>
	#include <zephyr/drivers/dma.h>
	#include <zephyr/devicetree.h>
	#include <zephyr/cache.h>
	#include <soc.h>

	#include "sedi_driver_dma.h"
	#include "sedi_driver_core.h"

	#include <zephyr/logging/log.h>
	LOG_MODULE_REGISTER(sedi_dma, CONFIG_DMA_LOG_LEVEL);

	extern void dma_isr(sedi_dma_t dma_device);

	struct dma_sedi_config_info {
	sedi_dma_t peripheral_id; /* Controller instance. */
	uint8_t chn_num;
	void (*irq_config)(void);
	};

	struct dma_sedi_driver_data {
	struct dma_config dma_configs[DMA_CHANNEL_NUM];
	};

	#define DEV_DATA(dev) ((struct dma_sedi_driver_data *const)(dev)->data)
	#define DEV_CFG(dev) \
	((const struct dma_sedi_config_info *const)(dev)->config)

	/*
	* this function will be called when dma transferring is completed
	* or error happened
	*/
	static void dma_handler(sedi_dma_t dma_device, int channel, int event_id,
	void *args)
	{
	ARG_UNUSED(args);
	const struct device dev = (const struct device )args;
	struct dma_sedi_driver_data *const data = DEV_DATA(dev);
	struct dma_config *config = &(data->dma_configs[channel]);

	/* run user-defined callback */
	if (config->dma_callback) {
	if ((event_id == SEDI_DMA_EVENT_TRANSFER_DONE) &&
	(config->complete_callback_en)) {
	config->dma_callback(dev, config->user_data,
	channel, 0);
	} else if (config->error_callback_en) {
	config->dma_callback(dev, config->user_data,
	channel, event_id);
	}
	}
	}

	/* map width to certain macros*/
	static int width_index(uint32_t num_bytes, uint32_t *index)
	{
	switch (num_bytes) {
	case 1:
	*index = DMA_TRANS_WIDTH_8;
	break;
	case 2:
	*index = DMA_TRANS_WIDTH_16;
	break;
	case 4:
	*index = DMA_TRANS_WIDTH_32;
	break;
	case 8:
	*index = DMA_TRANS_WIDTH_64;
	break;
	case 16:
	*index = DMA_TRANS_WIDTH_128;
	break;
	case 32:
	*index = DMA_TRANS_WIDTH_256;
	break;
	default:
	return -ENOTSUP;
	}

	return 0;
	}

	/* map burst size to certain macros*/
	static int burst_index(uint32_t num_units, uint32_t *index)
	{
	switch (num_units) {
	case 1:
	*index = DMA_BURST_TRANS_LENGTH_1;
	break;
	case 4:
	*index = DMA_BURST_TRANS_LENGTH_4;
	break;
	case 8:
	*index = DMA_BURST_TRANS_LENGTH_8;
	break;
	case 16:
	*index = DMA_BURST_TRANS_LENGTH_16;
	break;
	case 32:
	*index = DMA_BURST_TRANS_LENGTH_32;
	break;
	case 64:
	*index = DMA_BURST_TRANS_LENGTH_64;
	break;
	case 128:
	*index = DMA_BURST_TRANS_LENGTH_128;
	break;
	case 256:
	*index = DMA_BURST_TRANS_LENGTH_256;
	break;
	default:
	return -ENOTSUP;
	}

	return 0;
	}

	static void dma_config_convert(struct dma_config *config,
	dma_memory_type_t *src_mem,
	dma_memory_type_t *dst_mem,
	uint8_t *sedi_dma_dir)
	{

	*src_mem = DMA_SRAM_MEM;
	*dst_mem = DMA_SRAM_MEM;
	*sedi_dma_dir = MEMORY_TO_MEMORY;
	switch (config->channel_direction) {
	case MEMORY_TO_MEMORY:
	case MEMORY_TO_PERIPHERAL:
	case PERIPHERAL_TO_MEMORY:
	case PERIPHERAL_TO_PERIPHERAL:
	*sedi_dma_dir = config->channel_direction;
	break;
	case MEMORY_TO_HOST:
	*dst_mem = DMA_DRAM_MEM;
	break;
	case HOST_TO_MEMORY:
	*src_mem = DMA_DRAM_MEM;
	break;
	#ifdef MEMORY_TO_IMR
	case MEMORY_TO_IMR:
	*dst_mem = DMA_UMA_MEM;
	break;
	#endif
	#ifdef IMR_TO_MEMORY
	case IMR_TO_MEMORY:
	*src_mem = DMA_UMA_MEM;
	break;
	#endif
	}
	}

	/* config basic dma */
	static int dma_sedi_apply_common_config(sedi_dma_t dev, uint32_t channel,
	struct dma_config config, uint8_t dir)
	{
	uint8_t direction = MEMORY_TO_MEMORY;
	dma_memory_type_t src_mem = DMA_SRAM_MEM, dst_mem = DMA_SRAM_MEM;

	dma_config_convert(config, &src_mem, &dst_mem, &direction);

	if (dir) {
	*dir = direction;
	}

	/* configure dma transferring direction*/
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_DIRECTION,
	direction);

	if (direction == MEMORY_TO_MEMORY) {
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_SR_MEM_TYPE,
	src_mem);
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_DT_MEM_TYPE,
	dst_mem);
	} else if (direction == MEMORY_TO_PERIPHERAL) {
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_DEVICE_ID,
	config->dma_slot);
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_POLARITY,
	DMA_HS_POLARITY_HIGH);
	sedi_dma_control(dev, channel,
	SEDI_CONFIG_DMA_HS_DEVICE_ID_PER_DIR,
	DMA_HS_PER_TX);
	} else if (direction == PERIPHERAL_TO_MEMORY) {
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_DEVICE_ID,
	config->dma_slot);
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_HS_POLARITY,
	DMA_HS_POLARITY_HIGH);
	sedi_dma_control(dev, channel,
	SEDI_CONFIG_DMA_HS_DEVICE_ID_PER_DIR,
	DMA_HS_PER_RX);
	} else {
	return -1;
	}
	return 0;
	}

	static int dma_sedi_apply_single_config(sedi_dma_t dev, uint32_t channel,
	struct dma_config *config)
	{
	int ret = 0;
	uint32_t temp = 0;

	ret = dma_sedi_apply_common_config(dev, channel, config, NULL);
	if (ret != 0) {
	goto INVALID_ARGS;
	}
	/* configurate dma width of source data*/
	ret = width_index(config->source_data_size, &temp);
	if (ret != 0) {
	goto INVALID_ARGS;
	}
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_SR_TRANS_WIDTH, temp);

	/* configurate dma width of destination data*/
	ret = width_index(config->dest_data_size, &temp);
	if (ret != 0) {
	goto INVALID_ARGS;
	}
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_DT_TRANS_WIDTH, temp);

	/* configurate dma burst size*/
	ret = burst_index(config->source_burst_length, &temp);
	if (ret != 0) {
	goto INVALID_ARGS;
	}
	sedi_dma_control(dev, channel, SEDI_CONFIG_DMA_BURST_LENGTH, temp);
	return 0;

	INVALID_ARGS:
	return ret;
	}

	static int dma_sedi_chan_config(const struct device *dev, uint32_t channel,
	struct dma_config *config)
	{
	if ((dev == NULL) \|\| (channel >= DEV_CFG(dev)->chn_num)
	\|\| (config == NULL)
	\|\| (config->block_count != 1)) {
	goto INVALID_ARGS;
	}

	const struct dma_sedi_config_info *const info = DEV_CFG(dev);
	struct dma_sedi_driver_data *const data = DEV_DATA(dev);

	memcpy(&(data->dma_configs[channel]), config, sizeof(struct dma_config));

	/* initialize the dma controller, following the sedi api*/
	sedi_dma_event_cb_t cb = dma_handler;

	sedi_dma_init(info->peripheral_id, (int)channel, cb, (void *)dev);

	return 0;

	INVALID_ARGS:
	return -1;
	}

	static int dma_sedi_reload(const struct device *dev, uint32_t channel,
	uint64_t src, uint64_t dst, size_t size)
	{
	if ((dev == NULL) \|\| (channel >= DEV_CFG(dev)->chn_num)) {
	LOG_ERR("dma reload failed for invalid args");
	return -ENOTSUP;
	}

	int ret = 0;
	struct dma_sedi_driver_data *const data = DEV_DATA(dev);
	struct dma_config *config = &(data->dma_configs[channel]);
	struct dma_block_config *block_config;

	if ((config == NULL) \|\| (config->head_block == NULL)) {
	LOG_ERR("dma reload failed, no config found");
	return -ENOTSUP;
	}
	block_config = config->head_block;

	if ((config->block_count == 1) \|\| (block_config->next_block == NULL)) {
	block_config->source_address = src;
	block_config->dest_address = dst;
	block_config->block_size = size;
	} else {
	LOG_ERR("no reload support for multi-linkedlist mode");
	return -ENOTSUP;
	}
	return ret;
	}

	static int dma_sedi_start(const struct device *dev, uint32_t channel)
	{
	if ((dev == NULL) \|\| (channel >= DEV_CFG(dev)->chn_num)) {
	LOG_ERR("dma transferring failed for invalid args");
	return -ENOTSUP;
	}

	int ret = -1;
	const struct dma_sedi_config_info *const info = DEV_CFG(dev);
	struct dma_sedi_driver_data *const data = DEV_DATA(dev);
	struct dma_config *config = &(data->dma_configs[channel]);
	struct dma_block_config *block_config = config->head_block;
	uint64_t src_addr, dst_addr;

	if (config->block_count == 1) {
	/* call sedi start function */
	ret = dma_sedi_apply_single_config(info->peripheral_id,
	channel, config);
	if (ret) {
	goto ERR;
	}
	src_addr = block_config->source_address;
	dst_addr = block_config->dest_address;

	ret = sedi_dma_start_transfer(info->peripheral_id, channel,
	src_addr, dst_addr, block_config->block_size);
	} else {
	LOG_ERR("MULTIPLE_BLOCK CONFIG is not set");
	goto ERR;
	}

	if (ret != SEDI_DRIVER_OK) {
	goto ERR;
	}

	return ret;

	ERR:
	LOG_ERR("dma transfer failed");
	return ret;
	}

	static int dma_sedi_stop(const struct device *dev, uint32_t channel)
	{
	const struct dma_sedi_config_info *const info = DEV_CFG(dev);

	LOG_DBG("stopping dma: %p, %d", dev, channel);
	sedi_dma_abort_transfer(info->peripheral_id, channel);

	return 0;
	}

	static const struct dma_driver_api dma_funcs = { .config = dma_sedi_chan_config,
	.start = dma_sedi_start,
	.stop = dma_sedi_stop,
	.reload = dma_sedi_reload,
	.get_status = NULL
	};

	static int dma_sedi_init(const struct device *dev)
	{
	const struct dma_sedi_config_info *const config = DEV_CFG(dev);

	config->irq_config();

	return 0;
	}

	#define DMA_DEVICE_INIT_SEDI(inst) \
	static void dma_sedi_##inst##_irq_config(void); \
	\
	static struct dma_sedi_driver_data dma_sedi_dev_data_##inst; \
	static const struct dma_sedi_config_info dma_sedi_config_data_##inst = { \
	.peripheral_id = DT_INST_PROP(inst, peripheral_id), \
	.chn_num = DT_INST_PROP(inst, dma_channels), \
	.irq_config = dma_sedi_##inst##_irq_config \
	}; \
	DEVICE_DT_DEFINE(DT_INST(inst, DT_DRV_COMPAT), &dma_sedi_init, \
	NULL, &dma_sedi_dev_data_##inst, &dma_sedi_config_data_##inst, PRE_KERNEL_2, \
	CONFIG_KERNEL_INIT_PRIORITY_DEVICE, (void *)&dma_funcs); \
	\
	static void dma_sedi_##inst##_irq_config(void) \
	{ \
	IRQ_CONNECT(DT_INST_IRQN(inst), \
	DT_INST_IRQ(inst, priority), dma_isr, \
	(void *)DT_INST_PROP(inst, peripheral_id), \
	DT_INST_IRQ(inst, sense)); \
	irq_enable(DT_INST_IRQN(inst)); \
	}

	DT_INST_FOREACH_STATUS_OKAY(DMA_DEVICE_INIT_SEDI)