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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: Felipe Balbi <felipe.balbi@linux.intel.com>
Link: https://lore.kernel.org/r/20191001081405.764161-1-felipe.balbi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Felipe Balbi 2019-10-01 11:14:05 +03:00 committed by Mark Brown
parent 16c3e05803
commit 8f5c285f3e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 11 additions and 2 deletions
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13
drivers/spi/spi-dw-pci.c
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@ -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