Commit d1c6f4ba authored by Manivannan Sadhasivam's avatar Manivannan Sadhasivam
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PCI: epf-mhi: Enable MHI async read/write support 



Now that both eDMA and iATU are prepared to support async transfer, let's
enable MHI async read/write by supplying the relevant callbacks.

In the absence of eDMA, iATU will be used for both sync and async
operations.

Acked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarKrzysztof Wilczyński <kw@linux.com>
Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
parent 0d5d5738

drivers/pci/endpoint/functions/pci-epf-mhi.c

+4 −3
Original line number Diff line number Diff line
@@ -766,12 +766,13 @@ static int pci_epf_mhi_link_up(struct pci_epf *epf) 
	mhi_cntrl->raise_irq = pci_epf_mhi_raise_irq;

	mhi_cntrl->alloc_map = pci_epf_mhi_alloc_map;

	mhi_cntrl->unmap_free = pci_epf_mhi_unmap_free;

	mhi_cntrl->read_sync = mhi_cntrl->read_async = pci_epf_mhi_iatu_read;

	mhi_cntrl->write_sync = mhi_cntrl->write_async = pci_epf_mhi_iatu_write;

	if (info->flags & MHI_EPF_USE_DMA) {

		mhi_cntrl->read_sync = pci_epf_mhi_edma_read;

		mhi_cntrl->write_sync = pci_epf_mhi_edma_write;

	} else {

		mhi_cntrl->read_sync = pci_epf_mhi_iatu_read;

		mhi_cntrl->write_sync = pci_epf_mhi_iatu_write;

		mhi_cntrl->read_async = pci_epf_mhi_edma_read_async;

		mhi_cntrl->write_async = pci_epf_mhi_edma_write_async;

	}



	/* Register the MHI EP controller */