12  * - Chapter 12 "Platform DMA Engine (PDMA)" of
25 #include "sf-pdma.h"
100 		dev_err(chan->pdma->dma_dev.dev,  in sf_pdma_prep_dma_memcpy()
250 		dev_err(chan->pdma->dma_dev.dev, "NULL desc.\n");  in sf_pdma_xfer_desc()
369  * sf_pdma_irq_init() - Init PDMA IRQ Handlers
371  * @pdma: pointer of PDMA engine. Caller should check NULL
383 static int sf_pdma_irq_init(struct platform_device *pdev, struct sf_pdma *pdma)  in sf_pdma_irq_init()  argument
388 	for (i = 0; i < pdma->n_chans; i++) {  in sf_pdma_irq_init()
389 		chan = &pdma->chans[i];  in sf_pdma_irq_init()
427  * @pdma: pointer of PDMA engine. Caller should check NULL
437 static void sf_pdma_setup_chans(struct sf_pdma *pdma)  in sf_pdma_setup_chans()  argument
442 	INIT_LIST_HEAD(&pdma->dma_dev.channels);  in sf_pdma_setup_chans()
444 	for (i = 0; i < pdma->n_chans; i++) {  in sf_pdma_setup_chans()
445 		chan = &pdma->chans[i];  in sf_pdma_setup_chans()
466 		chan->pdma = pdma;  in sf_pdma_setup_chans()
473 		vchan_init(&chan->vchan, &pdma->dma_dev);  in sf_pdma_setup_chans()
484 	struct sf_pdma *pdma;  in sf_pdma_probe()  local
496 	len = sizeof(*pdma) + sizeof(*chan) * chans;  in sf_pdma_probe()
497 	pdma = devm_kzalloc(&pdev->dev, len, GFP_KERNEL);  in sf_pdma_probe()
498 	if (!pdma)  in sf_pdma_probe()
501 	pdma->n_chans = chans;  in sf_pdma_probe()
504 	pdma->membase = devm_ioremap_resource(&pdev->dev, res);  in sf_pdma_probe()
505 	if (IS_ERR(pdma->membase))  in sf_pdma_probe()
506 		return PTR_ERR(pdma->membase);  in sf_pdma_probe()
508 	ret = sf_pdma_irq_init(pdev, pdma);  in sf_pdma_probe()
512 	sf_pdma_setup_chans(pdma);  in sf_pdma_probe()
514 	pdma->dma_dev.dev = &pdev->dev;  in sf_pdma_probe()
517 	dma_cap_set(DMA_MEMCPY, pdma->dma_dev.cap_mask);  in sf_pdma_probe()
518 	pdma->dma_dev.copy_align = 2;  in sf_pdma_probe()
519 	pdma->dma_dev.src_addr_widths = widths;  in sf_pdma_probe()
520 	pdma->dma_dev.dst_addr_widths = widths;  in sf_pdma_probe()
521 	pdma->dma_dev.directions = BIT(DMA_MEM_TO_MEM);  in sf_pdma_probe()
522 	pdma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;  in sf_pdma_probe()
523 	pdma->dma_dev.descriptor_reuse = true;  in sf_pdma_probe()
526 	pdma->dma_dev.device_alloc_chan_resources =  in sf_pdma_probe()
528 	pdma->dma_dev.device_free_chan_resources =  in sf_pdma_probe()
530 	pdma->dma_dev.device_tx_status = sf_pdma_tx_status;  in sf_pdma_probe()
531 	pdma->dma_dev.device_prep_dma_memcpy = sf_pdma_prep_dma_memcpy;  in sf_pdma_probe()
532 	pdma->dma_dev.device_config = sf_pdma_slave_config;  in sf_pdma_probe()
533 	pdma->dma_dev.device_terminate_all = sf_pdma_terminate_all;  in sf_pdma_probe()
534 	pdma->dma_dev.device_issue_pending = sf_pdma_issue_pending;  in sf_pdma_probe()
536 	platform_set_drvdata(pdev, pdma);  in sf_pdma_probe()
543 	ret = dma_async_device_register(&pdma->dma_dev);  in sf_pdma_probe()
555 	struct sf_pdma *pdma = platform_get_drvdata(pdev);  in sf_pdma_remove()  local
560 		ch = &pdma->chans[i];  in sf_pdma_remove()
570 	dma_async_device_unregister(&pdma->dma_dev);  in sf_pdma_remove()
576 	{ .compatible = "sifive,fu540-c000-pdma" },
585 		.name	= "sf-pdma",