Unverified Commit 8f5c285f authored by Felipe Balbi's avatar Felipe Balbi Committed by Mark Brown
Browse files

SPI: designware: pci: Switch over to MSI interrupts 



Some devices support MSI interrupts. Let's at least try to use them in
platforms that provide MSI capability.

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Link: https://lore.kernel.org/r/20191001081405.764161-1-felipe.balbi@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 16c3e058

drivers/spi/spi-dw-pci.c

+11 −2
Original line number Diff line number Diff line
@@ -57,13 +57,18 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 


	/* Get basic io resource and map it */

	dws->paddr = pci_resource_start(pdev, pci_bar);

	pci_set_master(pdev);



	ret = pcim_iomap_regions(pdev, 1 << pci_bar, pci_name(pdev));

	if (ret)

		return ret;



	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);

	if (ret < 0)

		return ret;



	dws->regs = pcim_iomap_table(pdev)[pci_bar];

	dws->irq = pdev->irq;

	dws->irq = pci_irq_vector(pdev, 0);



	/*

	 * Specific handling for platforms, like dma setup,
@@ -80,12 +85,15 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 
				return ret;

		}

	} else {

		pci_free_irq_vectors(pdev);

		return -ENODEV;

	}



	ret = dw_spi_add_host(&pdev->dev, dws);

	if (ret)

	if (ret) {

		pci_free_irq_vectors(pdev);

		return ret;

	}



	/* PCI hook and SPI hook use the same drv data */

	pci_set_drvdata(pdev, dws);
@@ -101,6 +109,7 @@ static void spi_pci_remove(struct pci_dev *pdev) 
	struct dw_spi *dws = pci_get_drvdata(pdev);



	dw_spi_remove_host(dws);

	pci_free_irq_vectors(pdev);

}



#ifdef CONFIG_PM_SLEEP

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