| 20 | static RT_DEFINE_SPINLOCK(dmac_nodes_lock); |
| 21 | |
| 22 | rt_err_t rt_dma_controller_register(struct rt_dma_controller *ctrl) |
| 23 | { |
| 24 | const char *dev_name; |
| 25 | char dma_name[RT_NAME_MAX]; |
| 26 | |
| 27 | if (!ctrl || !ctrl->dev || !ctrl->ops) |
| 28 | { |
| 29 | return -RT_EINVAL; |
| 30 | } |
| 31 | |
| 32 | dev_name = rt_dm_dev_get_name(ctrl->dev); |
| 33 | |
| 34 | if (rt_bitmap_next_set_bit(ctrl->dir_cap, 0, RT_DMA_DIR_MAX) == RT_DMA_DIR_MAX) |
| 35 | { |
| 36 | LOG_E("%s: Not direction capability", dev_name); |
| 37 | |
| 38 | return -RT_EINVAL; |
| 39 | } |
| 40 | |
| 41 | rt_snprintf(dma_name, sizeof(dma_name), "%s-dmac", dev_name); |
| 42 | |
| 43 | rt_list_init(&ctrl->list); |
| 44 | |
| 45 | rt_spin_lock(&dmac_nodes_lock); |
| 46 | rt_list_insert_before(&dmac_nodes, &ctrl->list); |
| 47 | rt_spin_unlock(&dmac_nodes_lock); |
| 48 | |
| 49 | rt_list_init(&ctrl->channels_nodes); |
| 50 | rt_mutex_init(&ctrl->mutex, dma_name, RT_IPC_FLAG_PRIO); |
| 51 | |
| 52 | if (ctrl->dev->ofw_node) |
| 53 | { |
| 54 | rt_dm_dev_bind_fwdata(ctrl->dev, RT_NULL, ctrl); |
| 55 | } |
| 56 | |
| 57 | return RT_EOK; |
| 58 | } |
| 59 | |
| 60 | rt_err_t rt_dma_controller_unregister(struct rt_dma_controller *ctrl) |
| 61 | { |
nothing calls this directly
no test coverage detected