Lines Matching refs:pdma
25 #include "sf-pdma.h"
90 dev_err(chan->pdma->dma_dev.dev,
258 dev_err(chan->pdma->dma_dev.dev, "NULL desc.\n");
389 * @pdma: pointer of PDMA engine. Caller should check NULL
401 static int sf_pdma_irq_init(struct platform_device *pdev, struct sf_pdma *pdma)
406 for (i = 0; i < pdma->n_chans; i++) {
407 chan = &pdma->chans[i];
445 * @pdma: pointer of PDMA engine. Caller should check NULL
455 static void sf_pdma_setup_chans(struct sf_pdma *pdma)
460 INIT_LIST_HEAD(&pdma->dma_dev.channels);
462 for (i = 0; i < pdma->n_chans; i++) {
463 chan = &pdma->chans[i];
484 chan->pdma = pdma;
491 vchan_init(&chan->vchan, &pdma->dma_dev);
502 struct sf_pdma *pdma;
514 len = sizeof(*pdma) + sizeof(*chan) * chans;
515 pdma = devm_kzalloc(&pdev->dev, len, GFP_KERNEL);
516 if (!pdma)
519 pdma->n_chans = chans;
522 pdma->membase = devm_ioremap_resource(&pdev->dev, res);
523 if (IS_ERR(pdma->membase))
524 return PTR_ERR(pdma->membase);
526 ret = sf_pdma_irq_init(pdev, pdma);
530 sf_pdma_setup_chans(pdma);
532 pdma->dma_dev.dev = &pdev->dev;
535 dma_cap_set(DMA_MEMCPY, pdma->dma_dev.cap_mask);
536 pdma->dma_dev.copy_align = 2;
537 pdma->dma_dev.src_addr_widths = widths;
538 pdma->dma_dev.dst_addr_widths = widths;
539 pdma->dma_dev.directions = BIT(DMA_MEM_TO_MEM);
540 pdma->dma_dev.residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;
541 pdma->dma_dev.descriptor_reuse = true;
544 pdma->dma_dev.device_alloc_chan_resources =
546 pdma->dma_dev.device_free_chan_resources =
548 pdma->dma_dev.device_tx_status = sf_pdma_tx_status;
549 pdma->dma_dev.device_prep_dma_memcpy = sf_pdma_prep_dma_memcpy;
550 pdma->dma_dev.device_config = sf_pdma_slave_config;
551 pdma->dma_dev.device_terminate_all = sf_pdma_terminate_all;
552 pdma->dma_dev.device_issue_pending = sf_pdma_issue_pending;
554 platform_set_drvdata(pdev, pdma);
561 ret = dma_async_device_register(&pdma->dma_dev);
573 struct sf_pdma *pdma = platform_get_drvdata(pdev);
578 ch = &pdma->chans[i];
588 dma_async_device_unregister(&pdma->dma_dev);
594 { .compatible = "sifive,fu540-c000-pdma" },
603 .name = "sf-pdma",