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i2c: designware-pci: Switch over to MSI interrupts

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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>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Felipe Balbi 2019-08-15 17:29:43 +03:00 • committed by Wolfram Sang
parent f0b576801d
commit 21aa3983d6
1 changed files with 14 additions and 3 deletions
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17
drivers/i2c/busses/i2c-designware-pcidrv.c
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@ -225,6 +225,8 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
return r; return r;
} }
pci_set_master(pdev);
r = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev)); r = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));
if (r) { if (r) {
dev_err(&pdev->dev, "I/O memory remapping failed\n"); dev_err(&pdev->dev, "I/O memory remapping failed\n");
@ -235,18 +237,24 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
if (!dev) if (!dev)
return -ENOMEM; return -ENOMEM;
r = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (r < 0)
return r;
dev->clk = NULL; dev->clk = NULL;
dev->controller = controller; dev->controller = controller;
dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz; dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;
dev->base = pcim_iomap_table(pdev)[0]; dev->base = pcim_iomap_table(pdev)[0];
dev->dev = &pdev->dev; dev->dev = &pdev->dev;
dev->irq = pdev->irq; dev->irq = pci_irq_vector(pdev, 0);
dev->flags |= controller->flags; dev->flags |= controller->flags;
if (controller->setup) { if (controller->setup) {
r = controller->setup(pdev, controller); r = controller->setup(pdev, controller);
if (r) if (r) {
pci_free_irq_vectors(pdev);
return r; return r;
}
} }
dev->functionality = controller->functionality | dev->functionality = controller->functionality |
@ -274,8 +282,10 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
adap->nr = controller->bus_num; adap->nr = controller->bus_num;
r = i2c_dw_probe(dev); r = i2c_dw_probe(dev);
if (r) if (r) {
pci_free_irq_vectors(pdev);
return r; return r;
}
pm_runtime_set_autosuspend_delay(&pdev->dev, 1000); pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);
pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_use_autosuspend(&pdev->dev);
@ -294,6 +304,7 @@ static void i2c_dw_pci_remove(struct pci_dev *pdev)
pm_runtime_get_noresume(&pdev->dev); pm_runtime_get_noresume(&pdev->dev);
i2c_del_adapter(&dev->adapter); i2c_del_adapter(&dev->adapter);
pci_free_irq_vectors(pdev);
} }
/* work with hotplug and coldplug */ /* work with hotplug and coldplug */