Commit 21aa3983 authored by Felipe Balbi's avatar Felipe Balbi Committed by Wolfram Sang
Browse files

i2c: 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>
Signed-off-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent f0b57680

drivers/i2c/busses/i2c-designware-pcidrv.c

+14 −3
Original line number Diff line number Diff line
@@ -225,6 +225,8 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev, 
		return r;

	}



	pci_set_master(pdev);



	r = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));

	if (r) {

		dev_err(&pdev->dev, "I/O memory remapping failed\n");
@@ -235,19 +237,25 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev, 
	if (!dev)

		return -ENOMEM;



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

	if (r < 0)

		return r;



	dev->clk = NULL;

	dev->controller = controller;

	dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;

	dev->base = pcim_iomap_table(pdev)[0];

	dev->dev = &pdev->dev;

	dev->irq = pdev->irq;

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

	dev->flags |= controller->flags;



	if (controller->setup) {

		r = controller->setup(pdev, controller);

		if (r)

		if (r) {

			pci_free_irq_vectors(pdev);

			return r;

		}

	}



	dev->functionality = controller->functionality |

				DW_IC_DEFAULT_FUNCTIONALITY;
@@ -274,8 +282,10 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev, 
	adap->nr = controller->bus_num;



	r = i2c_dw_probe(dev);

	if (r)

	if (r) {

		pci_free_irq_vectors(pdev);

		return r;

	}



	pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);

	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);



	i2c_del_adapter(&dev->adapter);

	pci_free_irq_vectors(pdev);

}



/* work with hotplug and coldplug */

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