282 static int xdma_xfer_start(struct xdma_chan *xchan)  in xdma_xfer_start()  argument
284 	struct virt_dma_desc *vd = vchan_next_desc(&xchan->vchan);  in xdma_xfer_start()
285 	struct xdma_device *xdev = xchan->xdev_hdl;  in xdma_xfer_start()
295 	if (!vd || xchan->busy)  in xdma_xfer_start()
299 	ret = regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_CONTROL_W1C,  in xdma_xfer_start()
305 	if (desc->dir != xchan->dir) {  in xdma_xfer_start()
314 	ret = regmap_write(xdev->rmap, xchan->base + XDMA_SGDMA_DESC_LO, val);  in xdma_xfer_start()
319 	ret = regmap_write(xdev->rmap, xchan->base + XDMA_SGDMA_DESC_HI, val);  in xdma_xfer_start()
327 	ret = regmap_write(xdev->rmap, xchan->base + XDMA_SGDMA_DESC_ADJ, val);  in xdma_xfer_start()
332 	ret = regmap_write(xdev->rmap, xchan->base + XDMA_CHAN_CONTROL,  in xdma_xfer_start()
337 	xchan->busy = true;  in xdma_xfer_start()
350 	struct xdma_chan **chans, *xchan;  in xdma_alloc_channels()  local
407 		xchan = &(*chans)[j];  in xdma_alloc_channels()
408 		xchan->xdev_hdl = xdev;  in xdma_alloc_channels()
409 		xchan->base = base + i * XDMA_CHAN_STRIDE;  in xdma_alloc_channels()
410 		xchan->dir = dir;  in xdma_alloc_channels()
412 		ret = xdma_channel_init(xchan);  in xdma_alloc_channels()
415 		xchan->vchan.desc_free = xdma_free_desc;  in xdma_alloc_channels()
416 		vchan_init(&xchan->vchan, &xdev->dma_dev);  in xdma_alloc_channels()
587 	struct xdma_chan *xchan = dev_id;  in xdma_channel_isr()  local
594 	spin_lock(&xchan->vchan.lock);  in xdma_channel_isr()
597 	vd = vchan_next_desc(&xchan->vchan);  in xdma_channel_isr()
601 	xchan->busy = false;  in xdma_channel_isr()
603 	xdev = xchan->xdev_hdl;  in xdma_channel_isr()
605 	ret = regmap_read(xdev->rmap, xchan->base + XDMA_CHAN_COMPLETED_DESC,  in xdma_channel_isr()
625 	xdma_xfer_start(xchan);  in xdma_channel_isr()
628 	spin_unlock(&xchan->vchan.lock);  in xdma_channel_isr()