diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2019-10-01 11:14:05 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-10-01 18:40:38 +0100 |
| commit | 8f5c285f3ef5ab3c7cf5288d63bdaa3549be2118 (patch) | |
| tree | a96eb83b1159d9f788896b73097f7ffc481e5830 /drivers/spi/spi-dw-pci.c | |
| parent | 16c3e058036a6f5be542962e487d428518edcb45 (diff) | |
| download | linux-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.c | 13 |
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 |