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authorFelipe Balbi <felipe.balbi@linux.intel.com>2019-10-01 11:14:05 +0300
committerMark Brown <broonie@kernel.org>2019-10-01 18:40:38 +0100
commit8f5c285f3ef5ab3c7cf5288d63bdaa3549be2118 (patch)
treea96eb83b1159d9f788896b73097f7ffc481e5830 /drivers/spi/spi-dw-pci.c
parent16c3e058036a6f5be542962e487d428518edcb45 (diff)
downloadlinux-8f5c285f3ef5ab3c7cf5288d63bdaa3549be2118.tar.bz2
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>
Diffstat (limited to 'drivers/spi/spi-dw-pci.c')
-rw-r--r--drivers/spi/spi-dw-pci.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
index 140644913e6c..7ab53f4d04b9 100644
--- a/drivers/spi/spi-dw-pci.c
+++ b/drivers/spi/spi-dw-pci.c
@@ -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