125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT snps_designware_dma
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <zephyr/kernel.h>
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#include <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/drivers/dma.h>
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#include <soc.h>
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#include "dma_dw_common.h"
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#include <zephyr/logging/log.h>
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#include <zephyr/irq.h>
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LOG_MODULE_REGISTER(dma_dw, CONFIG_DMA_LOG_LEVEL);
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/* Device constant configuration parameters */
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struct dw_dma_cfg {
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struct dw_dma_dev_cfg dw_cfg;
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void (*irq_config)(void);
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};
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static int dw_dma_init(const struct device *dev)
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{
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const struct dw_dma_cfg *const dev_cfg = dev->config;
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/* Disable all channels and Channel interrupts */
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int ret = dw_dma_setup(dev);
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if (ret != 0) {
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LOG_ERR("failed to initialize DW DMA %s", dev->name);
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goto out;
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}
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/* Configure interrupts */
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dev_cfg->irq_config();
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LOG_INF("Device %s initialized", dev->name);
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out:
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return ret;
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}
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static const struct dma_driver_api dw_dma_driver_api = {
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.config = dw_dma_config,
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.start = dw_dma_start,
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.stop = dw_dma_stop,
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};
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#define DW_DMAC_INIT(inst) \
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\
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static struct dw_drv_plat_data dmac##inst = { \
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.chan[0] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[1] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[2] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[3] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[4] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[5] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[6] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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.chan[7] = { \
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.class = 6, \
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.weight = 0, \
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}, \
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}; \
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\
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static void dw_dma##inst##_irq_config(void); \
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\
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static const struct dw_dma_cfg dw_dma##inst##_config = { \
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.dw_cfg = { \
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.base = DT_INST_REG_ADDR(inst), \
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}, \
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.irq_config = dw_dma##inst##_irq_config \
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}; \
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\
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static struct dw_dma_dev_data dw_dma##inst##_data = { \
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.channel_data = &dmac##inst, \
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}; \
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\
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DEVICE_DT_INST_DEFINE(inst, \
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&dw_dma_init, \
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NULL, \
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&dw_dma##inst##_data, \
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&dw_dma##inst##_config, POST_KERNEL, \
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CONFIG_DMA_INIT_PRIORITY, \
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&dw_dma_driver_api); \
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\
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static void dw_dma##inst##_irq_config(void) \
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{ \
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IRQ_CONNECT(DT_INST_IRQN(inst), \
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DT_INST_IRQ(inst, priority), dw_dma_isr, \
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DEVICE_DT_INST_GET(inst), \
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DT_INST_IRQ(inst, sense)); \
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irq_enable(DT_INST_IRQN(inst)); \
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}
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DT_INST_FOREACH_STATUS_OKAY(DW_DMAC_INIT)
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